Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 3748, column 7
Assigned value is garbage or undefined

Annotated Source Code

/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp

1//===-- LLParser.cpp - Parser Class ---------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines the parser class for .ll files.
11//
12//===----------------------------------------------------------------------===//
13
14#include "LLParser.h"
15#include "llvm/ADT/DenseMap.h"
16#include "llvm/ADT/None.h"
17#include "llvm/ADT/Optional.h"
18#include "llvm/ADT/STLExtras.h"
19#include "llvm/ADT/SmallPtrSet.h"
20#include "llvm/AsmParser/SlotMapping.h"
21#include "llvm/BinaryFormat/Dwarf.h"
22#include "llvm/IR/Argument.h"
23#include "llvm/IR/AutoUpgrade.h"
24#include "llvm/IR/BasicBlock.h"
25#include "llvm/IR/CallingConv.h"
26#include "llvm/IR/Comdat.h"
27#include "llvm/IR/Constants.h"
28#include "llvm/IR/DebugInfoMetadata.h"
29#include "llvm/IR/DerivedTypes.h"
30#include "llvm/IR/Function.h"
31#include "llvm/IR/GlobalIFunc.h"
32#include "llvm/IR/GlobalObject.h"
33#include "llvm/IR/InlineAsm.h"
34#include "llvm/IR/Instruction.h"
35#include "llvm/IR/Instructions.h"
36#include "llvm/IR/Intrinsics.h"
37#include "llvm/IR/LLVMContext.h"
38#include "llvm/IR/Metadata.h"
39#include "llvm/IR/Module.h"
40#include "llvm/IR/Operator.h"
41#include "llvm/IR/Type.h"
42#include "llvm/IR/Value.h"
43#include "llvm/IR/ValueSymbolTable.h"
44#include "llvm/Support/Casting.h"
45#include "llvm/Support/ErrorHandling.h"
46#include "llvm/Support/MathExtras.h"
47#include "llvm/Support/SaveAndRestore.h"
48#include "llvm/Support/raw_ostream.h"
49#include <algorithm>
50#include <cassert>
51#include <cstring>
52#include <iterator>
53#include <vector>
54
55using namespace llvm;
56
57static std::string getTypeString(Type *T) {
58 std::string Result;
59 raw_string_ostream Tmp(Result);
60 Tmp << *T;
61 return Tmp.str();
62}
63
64/// Run: module ::= toplevelentity*
65bool LLParser::Run() {
66 // Prime the lexer.
67 Lex.Lex();
68
69 if (Context.shouldDiscardValueNames())
70 return Error(
71 Lex.getLoc(),
72 "Can't read textual IR with a Context that discards named Values");
73
74 return ParseTopLevelEntities() ||
75 ValidateEndOfModule();
76}
77
78bool LLParser::parseStandaloneConstantValue(Constant *&C,
79 const SlotMapping *Slots) {
80 restoreParsingState(Slots);
81 Lex.Lex();
82
83 Type *Ty = nullptr;
84 if (ParseType(Ty) || parseConstantValue(Ty, C))
85 return true;
86 if (Lex.getKind() != lltok::Eof)
87 return Error(Lex.getLoc(), "expected end of string");
88 return false;
89}
90
91bool LLParser::parseTypeAtBeginning(Type *&Ty, unsigned &Read,
92 const SlotMapping *Slots) {
93 restoreParsingState(Slots);
94 Lex.Lex();
95
96 Read = 0;
97 SMLoc Start = Lex.getLoc();
98 Ty = nullptr;
99 if (ParseType(Ty))
100 return true;
101 SMLoc End = Lex.getLoc();
102 Read = End.getPointer() - Start.getPointer();
103
104 return false;
105}
106
107void LLParser::restoreParsingState(const SlotMapping *Slots) {
108 if (!Slots)
109 return;
110 NumberedVals = Slots->GlobalValues;
111 NumberedMetadata = Slots->MetadataNodes;
112 for (const auto &I : Slots->NamedTypes)
113 NamedTypes.insert(
114 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
115 for (const auto &I : Slots->Types)
116 NumberedTypes.insert(
117 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
118}
119
120/// ValidateEndOfModule - Do final validity and sanity checks at the end of the
121/// module.
122bool LLParser::ValidateEndOfModule() {
123 // Handle any function attribute group forward references.
124 for (const auto &RAG : ForwardRefAttrGroups) {
125 Value *V = RAG.first;
126 const std::vector<unsigned> &Attrs = RAG.second;
127 AttrBuilder B;
128
129 for (const auto &Attr : Attrs)
130 B.merge(NumberedAttrBuilders[Attr]);
131
132 if (Function *Fn = dyn_cast<Function>(V)) {
133 AttributeList AS = Fn->getAttributes();
134 AttrBuilder FnAttrs(AS.getFnAttributes());
135 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
136
137 FnAttrs.merge(B);
138
139 // If the alignment was parsed as an attribute, move to the alignment
140 // field.
141 if (FnAttrs.hasAlignmentAttr()) {
142 Fn->setAlignment(FnAttrs.getAlignment());
143 FnAttrs.removeAttribute(Attribute::Alignment);
144 }
145
146 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
147 AttributeSet::get(Context, FnAttrs));
148 Fn->setAttributes(AS);
149 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
150 AttributeList AS = CI->getAttributes();
151 AttrBuilder FnAttrs(AS.getFnAttributes());
152 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
153 FnAttrs.merge(B);
154 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
155 AttributeSet::get(Context, FnAttrs));
156 CI->setAttributes(AS);
157 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
158 AttributeList AS = II->getAttributes();
159 AttrBuilder FnAttrs(AS.getFnAttributes());
160 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
161 FnAttrs.merge(B);
162 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
163 AttributeSet::get(Context, FnAttrs));
164 II->setAttributes(AS);
165 } else if (auto *GV = dyn_cast<GlobalVariable>(V)) {
166 AttrBuilder Attrs(GV->getAttributes());
167 Attrs.merge(B);
168 GV->setAttributes(AttributeSet::get(Context,Attrs));
169 } else {
170 llvm_unreachable("invalid object with forward attribute group reference")::llvm::llvm_unreachable_internal("invalid object with forward attribute group reference"
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 170)
;
171 }
172 }
173
174 // If there are entries in ForwardRefBlockAddresses at this point, the
175 // function was never defined.
176 if (!ForwardRefBlockAddresses.empty())
177 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
178 "expected function name in blockaddress");
179
180 for (const auto &NT : NumberedTypes)
181 if (NT.second.second.isValid())
182 return Error(NT.second.second,
183 "use of undefined type '%" + Twine(NT.first) + "'");
184
185 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
186 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
187 if (I->second.second.isValid())
188 return Error(I->second.second,
189 "use of undefined type named '" + I->getKey() + "'");
190
191 if (!ForwardRefComdats.empty())
192 return Error(ForwardRefComdats.begin()->second,
193 "use of undefined comdat '$" +
194 ForwardRefComdats.begin()->first + "'");
195
196 if (!ForwardRefVals.empty())
197 return Error(ForwardRefVals.begin()->second.second,
198 "use of undefined value '@" + ForwardRefVals.begin()->first +
199 "'");
200
201 if (!ForwardRefValIDs.empty())
202 return Error(ForwardRefValIDs.begin()->second.second,
203 "use of undefined value '@" +
204 Twine(ForwardRefValIDs.begin()->first) + "'");
205
206 if (!ForwardRefMDNodes.empty())
207 return Error(ForwardRefMDNodes.begin()->second.second,
208 "use of undefined metadata '!" +
209 Twine(ForwardRefMDNodes.begin()->first) + "'");
210
211 // Resolve metadata cycles.
212 for (auto &N : NumberedMetadata) {
213 if (N.second && !N.second->isResolved())
214 N.second->resolveCycles();
215 }
216
217 for (auto *Inst : InstsWithTBAATag) {
218 MDNode *MD = Inst->getMetadata(LLVMContext::MD_tbaa);
219 assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag")((MD && "UpgradeInstWithTBAATag should have a TBAA tag"
) ? static_cast<void> (0) : __assert_fail ("MD && \"UpgradeInstWithTBAATag should have a TBAA tag\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 219, __PRETTY_FUNCTION__))
;
220 auto *UpgradedMD = UpgradeTBAANode(*MD);
221 if (MD != UpgradedMD)
222 Inst->setMetadata(LLVMContext::MD_tbaa, UpgradedMD);
223 }
224
225 // Look for intrinsic functions and CallInst that need to be upgraded
226 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
227 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
228
229 // Some types could be renamed during loading if several modules are
230 // loaded in the same LLVMContext (LTO scenario). In this case we should
231 // remangle intrinsics names as well.
232 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ) {
233 Function *F = &*FI++;
234 if (auto Remangled = Intrinsic::remangleIntrinsicFunction(F)) {
235 F->replaceAllUsesWith(Remangled.getValue());
236 F->eraseFromParent();
237 }
238 }
239
240 if (UpgradeDebugInfo)
241 llvm::UpgradeDebugInfo(*M);
242
243 UpgradeModuleFlags(*M);
244 UpgradeSectionAttributes(*M);
245
246 if (!Slots)
247 return false;
248 // Initialize the slot mapping.
249 // Because by this point we've parsed and validated everything, we can "steal"
250 // the mapping from LLParser as it doesn't need it anymore.
251 Slots->GlobalValues = std::move(NumberedVals);
252 Slots->MetadataNodes = std::move(NumberedMetadata);
253 for (const auto &I : NamedTypes)
254 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
255 for (const auto &I : NumberedTypes)
256 Slots->Types.insert(std::make_pair(I.first, I.second.first));
257
258 return false;
259}
260
261//===----------------------------------------------------------------------===//
262// Top-Level Entities
263//===----------------------------------------------------------------------===//
264
265bool LLParser::ParseTopLevelEntities() {
266 while (true) {
267 switch (Lex.getKind()) {
268 default: return TokError("expected top-level entity");
269 case lltok::Eof: return false;
270 case lltok::kw_declare: if (ParseDeclare()) return true; break;
271 case lltok::kw_define: if (ParseDefine()) return true; break;
272 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
273 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
274 case lltok::kw_source_filename:
275 if (ParseSourceFileName())
276 return true;
277 break;
278 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
279 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
280 case lltok::LocalVar: if (ParseNamedType()) return true; break;
281 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
282 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
283 case lltok::ComdatVar: if (parseComdat()) return true; break;
284 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
285 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
286 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
287 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
288 case lltok::kw_uselistorder_bb:
289 if (ParseUseListOrderBB())
290 return true;
291 break;
292 }
293 }
294}
295
296/// toplevelentity
297/// ::= 'module' 'asm' STRINGCONSTANT
298bool LLParser::ParseModuleAsm() {
299 assert(Lex.getKind() == lltok::kw_module)((Lex.getKind() == lltok::kw_module) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::kw_module", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 299, __PRETTY_FUNCTION__))
;
300 Lex.Lex();
301
302 std::string AsmStr;
303 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
304 ParseStringConstant(AsmStr)) return true;
305
306 M->appendModuleInlineAsm(AsmStr);
307 return false;
308}
309
310/// toplevelentity
311/// ::= 'target' 'triple' '=' STRINGCONSTANT
312/// ::= 'target' 'datalayout' '=' STRINGCONSTANT
313bool LLParser::ParseTargetDefinition() {
314 assert(Lex.getKind() == lltok::kw_target)((Lex.getKind() == lltok::kw_target) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::kw_target", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 314, __PRETTY_FUNCTION__))
;
315 std::string Str;
316 switch (Lex.Lex()) {
317 default: return TokError("unknown target property");
318 case lltok::kw_triple:
319 Lex.Lex();
320 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
321 ParseStringConstant(Str))
322 return true;
323 M->setTargetTriple(Str);
324 return false;
325 case lltok::kw_datalayout:
326 Lex.Lex();
327 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
328 ParseStringConstant(Str))
329 return true;
330 M->setDataLayout(Str);
331 return false;
332 }
333}
334
335/// toplevelentity
336/// ::= 'source_filename' '=' STRINGCONSTANT
337bool LLParser::ParseSourceFileName() {
338 assert(Lex.getKind() == lltok::kw_source_filename)((Lex.getKind() == lltok::kw_source_filename) ? static_cast<
void> (0) : __assert_fail ("Lex.getKind() == lltok::kw_source_filename"
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 338, __PRETTY_FUNCTION__))
;
339 std::string Str;
340 Lex.Lex();
341 if (ParseToken(lltok::equal, "expected '=' after source_filename") ||
342 ParseStringConstant(Str))
343 return true;
344 M->setSourceFileName(Str);
345 return false;
346}
347
348/// toplevelentity
349/// ::= 'deplibs' '=' '[' ']'
350/// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
351/// FIXME: Remove in 4.0. Currently parse, but ignore.
352bool LLParser::ParseDepLibs() {
353 assert(Lex.getKind() == lltok::kw_deplibs)((Lex.getKind() == lltok::kw_deplibs) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::kw_deplibs", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 353, __PRETTY_FUNCTION__))
;
354 Lex.Lex();
355 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
356 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
357 return true;
358
359 if (EatIfPresent(lltok::rsquare))
360 return false;
361
362 do {
363 std::string Str;
364 if (ParseStringConstant(Str)) return true;
365 } while (EatIfPresent(lltok::comma));
366
367 return ParseToken(lltok::rsquare, "expected ']' at end of list");
368}
369
370/// ParseUnnamedType:
371/// ::= LocalVarID '=' 'type' type
372bool LLParser::ParseUnnamedType() {
373 LocTy TypeLoc = Lex.getLoc();
374 unsigned TypeID = Lex.getUIntVal();
375 Lex.Lex(); // eat LocalVarID;
376
377 if (ParseToken(lltok::equal, "expected '=' after name") ||
378 ParseToken(lltok::kw_type, "expected 'type' after '='"))
379 return true;
380
381 Type *Result = nullptr;
382 if (ParseStructDefinition(TypeLoc, "",
383 NumberedTypes[TypeID], Result)) return true;
384
385 if (!isa<StructType>(Result)) {
386 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
387 if (Entry.first)
388 return Error(TypeLoc, "non-struct types may not be recursive");
389 Entry.first = Result;
390 Entry.second = SMLoc();
391 }
392
393 return false;
394}
395
396/// toplevelentity
397/// ::= LocalVar '=' 'type' type
398bool LLParser::ParseNamedType() {
399 std::string Name = Lex.getStrVal();
400 LocTy NameLoc = Lex.getLoc();
401 Lex.Lex(); // eat LocalVar.
402
403 if (ParseToken(lltok::equal, "expected '=' after name") ||
404 ParseToken(lltok::kw_type, "expected 'type' after name"))
405 return true;
406
407 Type *Result = nullptr;
408 if (ParseStructDefinition(NameLoc, Name,
409 NamedTypes[Name], Result)) return true;
410
411 if (!isa<StructType>(Result)) {
412 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
413 if (Entry.first)
414 return Error(NameLoc, "non-struct types may not be recursive");
415 Entry.first = Result;
416 Entry.second = SMLoc();
417 }
418
419 return false;
420}
421
422/// toplevelentity
423/// ::= 'declare' FunctionHeader
424bool LLParser::ParseDeclare() {
425 assert(Lex.getKind() == lltok::kw_declare)((Lex.getKind() == lltok::kw_declare) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::kw_declare", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 425, __PRETTY_FUNCTION__))
;
426 Lex.Lex();
427
428 std::vector<std::pair<unsigned, MDNode *>> MDs;
429 while (Lex.getKind() == lltok::MetadataVar) {
430 unsigned MDK;
431 MDNode *N;
432 if (ParseMetadataAttachment(MDK, N))
433 return true;
434 MDs.push_back({MDK, N});
435 }
436
437 Function *F;
438 if (ParseFunctionHeader(F, false))
439 return true;
440 for (auto &MD : MDs)
441 F->addMetadata(MD.first, *MD.second);
442 return false;
443}
444
445/// toplevelentity
446/// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
447bool LLParser::ParseDefine() {
448 assert(Lex.getKind() == lltok::kw_define)((Lex.getKind() == lltok::kw_define) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::kw_define", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 448, __PRETTY_FUNCTION__))
;
449 Lex.Lex();
450
451 Function *F;
452 return ParseFunctionHeader(F, true) ||
453 ParseOptionalFunctionMetadata(*F) ||
454 ParseFunctionBody(*F);
455}
456
457/// ParseGlobalType
458/// ::= 'constant'
459/// ::= 'global'
460bool LLParser::ParseGlobalType(bool &IsConstant) {
461 if (Lex.getKind() == lltok::kw_constant)
462 IsConstant = true;
463 else if (Lex.getKind() == lltok::kw_global)
464 IsConstant = false;
465 else {
466 IsConstant = false;
467 return TokError("expected 'global' or 'constant'");
468 }
469 Lex.Lex();
470 return false;
471}
472
473bool LLParser::ParseOptionalUnnamedAddr(
474 GlobalVariable::UnnamedAddr &UnnamedAddr) {
475 if (EatIfPresent(lltok::kw_unnamed_addr))
476 UnnamedAddr = GlobalValue::UnnamedAddr::Global;
477 else if (EatIfPresent(lltok::kw_local_unnamed_addr))
478 UnnamedAddr = GlobalValue::UnnamedAddr::Local;
479 else
480 UnnamedAddr = GlobalValue::UnnamedAddr::None;
481 return false;
482}
483
484/// ParseUnnamedGlobal:
485/// OptionalVisibility (ALIAS | IFUNC) ...
486/// OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
487/// OptionalDLLStorageClass
488/// ... -> global variable
489/// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
490/// GlobalID '=' OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
491/// OptionalDLLStorageClass
492/// ... -> global variable
493bool LLParser::ParseUnnamedGlobal() {
494 unsigned VarID = NumberedVals.size();
495 std::string Name;
496 LocTy NameLoc = Lex.getLoc();
497
498 // Handle the GlobalID form.
499 if (Lex.getKind() == lltok::GlobalID) {
500 if (Lex.getUIntVal() != VarID)
501 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
502 Twine(VarID) + "'");
503 Lex.Lex(); // eat GlobalID;
504
505 if (ParseToken(lltok::equal, "expected '=' after name"))
506 return true;
507 }
508
509 bool HasLinkage;
510 unsigned Linkage, Visibility, DLLStorageClass;
511 bool DSOLocal;
512 GlobalVariable::ThreadLocalMode TLM;
513 GlobalVariable::UnnamedAddr UnnamedAddr;
514 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
515 DSOLocal) ||
516 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
517 return true;
518
519 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
520 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
521 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
522
523 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
524 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
525}
526
527/// ParseNamedGlobal:
528/// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
529/// GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
530/// OptionalVisibility OptionalDLLStorageClass
531/// ... -> global variable
532bool LLParser::ParseNamedGlobal() {
533 assert(Lex.getKind() == lltok::GlobalVar)((Lex.getKind() == lltok::GlobalVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::GlobalVar", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 533, __PRETTY_FUNCTION__))
;
534 LocTy NameLoc = Lex.getLoc();
535 std::string Name = Lex.getStrVal();
536 Lex.Lex();
537
538 bool HasLinkage;
539 unsigned Linkage, Visibility, DLLStorageClass;
540 bool DSOLocal;
541 GlobalVariable::ThreadLocalMode TLM;
542 GlobalVariable::UnnamedAddr UnnamedAddr;
543 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
544 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
545 DSOLocal) ||
546 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
547 return true;
548
549 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
550 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
551 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
552
553 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
554 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
555}
556
557bool LLParser::parseComdat() {
558 assert(Lex.getKind() == lltok::ComdatVar)((Lex.getKind() == lltok::ComdatVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::ComdatVar", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 558, __PRETTY_FUNCTION__))
;
559 std::string Name = Lex.getStrVal();
560 LocTy NameLoc = Lex.getLoc();
561 Lex.Lex();
562
563 if (ParseToken(lltok::equal, "expected '=' here"))
564 return true;
565
566 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
567 return TokError("expected comdat type");
568
569 Comdat::SelectionKind SK;
570 switch (Lex.getKind()) {
571 default:
572 return TokError("unknown selection kind");
573 case lltok::kw_any:
574 SK = Comdat::Any;
575 break;
576 case lltok::kw_exactmatch:
577 SK = Comdat::ExactMatch;
578 break;
579 case lltok::kw_largest:
580 SK = Comdat::Largest;
581 break;
582 case lltok::kw_noduplicates:
583 SK = Comdat::NoDuplicates;
584 break;
585 case lltok::kw_samesize:
586 SK = Comdat::SameSize;
587 break;
588 }
589 Lex.Lex();
590
591 // See if the comdat was forward referenced, if so, use the comdat.
592 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
593 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
594 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
595 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
596
597 Comdat *C;
598 if (I != ComdatSymTab.end())
599 C = &I->second;
600 else
601 C = M->getOrInsertComdat(Name);
602 C->setSelectionKind(SK);
603
604 return false;
605}
606
607// MDString:
608// ::= '!' STRINGCONSTANT
609bool LLParser::ParseMDString(MDString *&Result) {
610 std::string Str;
611 if (ParseStringConstant(Str)) return true;
612 Result = MDString::get(Context, Str);
613 return false;
614}
615
616// MDNode:
617// ::= '!' MDNodeNumber
618bool LLParser::ParseMDNodeID(MDNode *&Result) {
619 // !{ ..., !42, ... }
620 LocTy IDLoc = Lex.getLoc();
621 unsigned MID = 0;
622 if (ParseUInt32(MID))
623 return true;
624
625 // If not a forward reference, just return it now.
626 if (NumberedMetadata.count(MID)) {
627 Result = NumberedMetadata[MID];
628 return false;
629 }
630
631 // Otherwise, create MDNode forward reference.
632 auto &FwdRef = ForwardRefMDNodes[MID];
633 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
634
635 Result = FwdRef.first.get();
636 NumberedMetadata[MID].reset(Result);
637 return false;
638}
639
640/// ParseNamedMetadata:
641/// !foo = !{ !1, !2 }
642bool LLParser::ParseNamedMetadata() {
643 assert(Lex.getKind() == lltok::MetadataVar)((Lex.getKind() == lltok::MetadataVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 643, __PRETTY_FUNCTION__))
;
644 std::string Name = Lex.getStrVal();
645 Lex.Lex();
646
647 if (ParseToken(lltok::equal, "expected '=' here") ||
648 ParseToken(lltok::exclaim, "Expected '!' here") ||
649 ParseToken(lltok::lbrace, "Expected '{' here"))
650 return true;
651
652 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
653 if (Lex.getKind() != lltok::rbrace)
654 do {
655 MDNode *N = nullptr;
656 // Parse DIExpressions inline as a special case. They are still MDNodes,
657 // so they can still appear in named metadata. Remove this logic if they
658 // become plain Metadata.
659 if (Lex.getKind() == lltok::MetadataVar &&
660 Lex.getStrVal() == "DIExpression") {
661 if (ParseDIExpression(N, /*IsDistinct=*/false))
662 return true;
663 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
664 ParseMDNodeID(N)) {
665 return true;
666 }
667 NMD->addOperand(N);
668 } while (EatIfPresent(lltok::comma));
669
670 return ParseToken(lltok::rbrace, "expected end of metadata node");
671}
672
673/// ParseStandaloneMetadata:
674/// !42 = !{...}
675bool LLParser::ParseStandaloneMetadata() {
676 assert(Lex.getKind() == lltok::exclaim)((Lex.getKind() == lltok::exclaim) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::exclaim", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 676, __PRETTY_FUNCTION__))
;
677 Lex.Lex();
678 unsigned MetadataID = 0;
679
680 MDNode *Init;
681 if (ParseUInt32(MetadataID) ||
682 ParseToken(lltok::equal, "expected '=' here"))
683 return true;
684
685 // Detect common error, from old metadata syntax.
686 if (Lex.getKind() == lltok::Type)
687 return TokError("unexpected type in metadata definition");
688
689 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
690 if (Lex.getKind() == lltok::MetadataVar) {
691 if (ParseSpecializedMDNode(Init, IsDistinct))
692 return true;
693 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
694 ParseMDTuple(Init, IsDistinct))
695 return true;
696
697 // See if this was forward referenced, if so, handle it.
698 auto FI = ForwardRefMDNodes.find(MetadataID);
699 if (FI != ForwardRefMDNodes.end()) {
700 FI->second.first->replaceAllUsesWith(Init);
701 ForwardRefMDNodes.erase(FI);
702
703 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work")((NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work"
) ? static_cast<void> (0) : __assert_fail ("NumberedMetadata[MetadataID] == Init && \"Tracking VH didn't work\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 703, __PRETTY_FUNCTION__))
;
704 } else {
705 if (NumberedMetadata.count(MetadataID))
706 return TokError("Metadata id is already used");
707 NumberedMetadata[MetadataID].reset(Init);
708 }
709
710 return false;
711}
712
713static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
714 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
715 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
716}
717
718/// parseIndirectSymbol:
719/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
720/// OptionalVisibility OptionalDLLStorageClass
721/// OptionalThreadLocal OptionalUnnamedAddr
722// 'alias|ifunc' IndirectSymbol
723///
724/// IndirectSymbol
725/// ::= TypeAndValue
726///
727/// Everything through OptionalUnnamedAddr has already been parsed.
728///
729bool LLParser::parseIndirectSymbol(const std::string &Name, LocTy NameLoc,
730 unsigned L, unsigned Visibility,
731 unsigned DLLStorageClass, bool DSOLocal,
732 GlobalVariable::ThreadLocalMode TLM,
733 GlobalVariable::UnnamedAddr UnnamedAddr) {
734 bool IsAlias;
735 if (Lex.getKind() == lltok::kw_alias)
736 IsAlias = true;
737 else if (Lex.getKind() == lltok::kw_ifunc)
738 IsAlias = false;
739 else
740 llvm_unreachable("Not an alias or ifunc!")::llvm::llvm_unreachable_internal("Not an alias or ifunc!", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 740)
;
741 Lex.Lex();
742
743 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
744
745 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
746 return Error(NameLoc, "invalid linkage type for alias");
747
748 if (!isValidVisibilityForLinkage(Visibility, L))
749 return Error(NameLoc,
750 "symbol with local linkage must have default visibility");
751
752 if (DSOLocal && !IsAlias) {
753 return Error(NameLoc,
754 "dso_local is invalid on ifunc");
755 }
756
757 Type *Ty;
758 LocTy ExplicitTypeLoc = Lex.getLoc();
759 if (ParseType(Ty) ||
760 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
761 return true;
762
763 Constant *Aliasee;
764 LocTy AliaseeLoc = Lex.getLoc();
765 if (Lex.getKind() != lltok::kw_bitcast &&
766 Lex.getKind() != lltok::kw_getelementptr &&
767 Lex.getKind() != lltok::kw_addrspacecast &&
768 Lex.getKind() != lltok::kw_inttoptr) {
769 if (ParseGlobalTypeAndValue(Aliasee))
770 return true;
771 } else {
772 // The bitcast dest type is not present, it is implied by the dest type.
773 ValID ID;
774 if (ParseValID(ID))
775 return true;
776 if (ID.Kind != ValID::t_Constant)
777 return Error(AliaseeLoc, "invalid aliasee");
778 Aliasee = ID.ConstantVal;
779 }
780
781 Type *AliaseeType = Aliasee->getType();
782 auto *PTy = dyn_cast<PointerType>(AliaseeType);
783 if (!PTy)
784 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
785 unsigned AddrSpace = PTy->getAddressSpace();
786
787 if (IsAlias && Ty != PTy->getElementType())
788 return Error(
789 ExplicitTypeLoc,
790 "explicit pointee type doesn't match operand's pointee type");
791
792 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
793 return Error(
794 ExplicitTypeLoc,
795 "explicit pointee type should be a function type");
796
797 GlobalValue *GVal = nullptr;
798
799 // See if the alias was forward referenced, if so, prepare to replace the
800 // forward reference.
801 if (!Name.empty()) {
802 GVal = M->getNamedValue(Name);
803 if (GVal) {
804 if (!ForwardRefVals.erase(Name))
805 return Error(NameLoc, "redefinition of global '@" + Name + "'");
806 }
807 } else {
808 auto I = ForwardRefValIDs.find(NumberedVals.size());
809 if (I != ForwardRefValIDs.end()) {
810 GVal = I->second.first;
811 ForwardRefValIDs.erase(I);
812 }
813 }
814
815 // Okay, create the alias but do not insert it into the module yet.
816 std::unique_ptr<GlobalIndirectSymbol> GA;
817 if (IsAlias)
818 GA.reset(GlobalAlias::create(Ty, AddrSpace,
819 (GlobalValue::LinkageTypes)Linkage, Name,
820 Aliasee, /*Parent*/ nullptr));
821 else
822 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
823 (GlobalValue::LinkageTypes)Linkage, Name,
824 Aliasee, /*Parent*/ nullptr));
825 GA->setThreadLocalMode(TLM);
826 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
827 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
828 GA->setUnnamedAddr(UnnamedAddr);
829 GA->setDSOLocal(DSOLocal);
830
831 if (Name.empty())
832 NumberedVals.push_back(GA.get());
833
834 if (GVal) {
835 // Verify that types agree.
836 if (GVal->getType() != GA->getType())
837 return Error(
838 ExplicitTypeLoc,
839 "forward reference and definition of alias have different types");
840
841 // If they agree, just RAUW the old value with the alias and remove the
842 // forward ref info.
843 GVal->replaceAllUsesWith(GA.get());
844 GVal->eraseFromParent();
845 }
846
847 // Insert into the module, we know its name won't collide now.
848 if (IsAlias)
849 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
850 else
851 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
852 assert(GA->getName() == Name && "Should not be a name conflict!")((GA->getName() == Name && "Should not be a name conflict!"
) ? static_cast<void> (0) : __assert_fail ("GA->getName() == Name && \"Should not be a name conflict!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 852, __PRETTY_FUNCTION__))
;
853
854 // The module owns this now
855 GA.release();
856
857 return false;
858}
859
860/// ParseGlobal
861/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
862/// OptionalVisibility OptionalDLLStorageClass
863/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
864/// OptionalExternallyInitialized GlobalType Type Const OptionalAttrs
865/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
866/// OptionalDLLStorageClass OptionalThreadLocal OptionalUnnamedAddr
867/// OptionalAddrSpace OptionalExternallyInitialized GlobalType Type
868/// Const OptionalAttrs
869///
870/// Everything up to and including OptionalUnnamedAddr has been parsed
871/// already.
872///
873bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
874 unsigned Linkage, bool HasLinkage,
875 unsigned Visibility, unsigned DLLStorageClass,
876 bool DSOLocal, GlobalVariable::ThreadLocalMode TLM,
877 GlobalVariable::UnnamedAddr UnnamedAddr) {
878 if (!isValidVisibilityForLinkage(Visibility, Linkage))
879 return Error(NameLoc,
880 "symbol with local linkage must have default visibility");
881
882 unsigned AddrSpace;
883 bool IsConstant, IsExternallyInitialized;
884 LocTy IsExternallyInitializedLoc;
885 LocTy TyLoc;
886
887 Type *Ty = nullptr;
888 if (ParseOptionalAddrSpace(AddrSpace) ||
889 ParseOptionalToken(lltok::kw_externally_initialized,
890 IsExternallyInitialized,
891 &IsExternallyInitializedLoc) ||
892 ParseGlobalType(IsConstant) ||
893 ParseType(Ty, TyLoc))
894 return true;
895
896 // If the linkage is specified and is external, then no initializer is
897 // present.
898 Constant *Init = nullptr;
899 if (!HasLinkage ||
900 !GlobalValue::isValidDeclarationLinkage(
901 (GlobalValue::LinkageTypes)Linkage)) {
902 if (ParseGlobalValue(Ty, Init))
903 return true;
904 }
905
906 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
907 return Error(TyLoc, "invalid type for global variable");
908
909 GlobalValue *GVal = nullptr;
910
911 // See if the global was forward referenced, if so, use the global.
912 if (!Name.empty()) {
913 GVal = M->getNamedValue(Name);
914 if (GVal) {
915 if (!ForwardRefVals.erase(Name))
916 return Error(NameLoc, "redefinition of global '@" + Name + "'");
917 }
918 } else {
919 auto I = ForwardRefValIDs.find(NumberedVals.size());
920 if (I != ForwardRefValIDs.end()) {
921 GVal = I->second.first;
922 ForwardRefValIDs.erase(I);
923 }
924 }
925
926 GlobalVariable *GV;
927 if (!GVal) {
928 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
929 Name, nullptr, GlobalVariable::NotThreadLocal,
930 AddrSpace);
931 } else {
932 if (GVal->getValueType() != Ty)
933 return Error(TyLoc,
934 "forward reference and definition of global have different types");
935
936 GV = cast<GlobalVariable>(GVal);
937
938 // Move the forward-reference to the correct spot in the module.
939 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
940 }
941
942 if (Name.empty())
943 NumberedVals.push_back(GV);
944
945 // Set the parsed properties on the global.
946 if (Init)
947 GV->setInitializer(Init);
948 GV->setConstant(IsConstant);
949 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
950 GV->setDSOLocal(DSOLocal);
951 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
952 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
953 GV->setExternallyInitialized(IsExternallyInitialized);
954 GV->setThreadLocalMode(TLM);
955 GV->setUnnamedAddr(UnnamedAddr);
956
957 // Parse attributes on the global.
958 while (Lex.getKind() == lltok::comma) {
959 Lex.Lex();
960
961 if (Lex.getKind() == lltok::kw_section) {
962 Lex.Lex();
963 GV->setSection(Lex.getStrVal());
964 if (ParseToken(lltok::StringConstant, "expected global section string"))
965 return true;
966 } else if (Lex.getKind() == lltok::kw_align) {
967 unsigned Alignment;
968 if (ParseOptionalAlignment(Alignment)) return true;
969 GV->setAlignment(Alignment);
970 } else if (Lex.getKind() == lltok::MetadataVar) {
971 if (ParseGlobalObjectMetadataAttachment(*GV))
972 return true;
973 } else {
974 Comdat *C;
975 if (parseOptionalComdat(Name, C))
976 return true;
977 if (C)
978 GV->setComdat(C);
979 else
980 return TokError("unknown global variable property!");
981 }
982 }
983
984 AttrBuilder Attrs;
985 LocTy BuiltinLoc;
986 std::vector<unsigned> FwdRefAttrGrps;
987 if (ParseFnAttributeValuePairs(Attrs, FwdRefAttrGrps, false, BuiltinLoc))
988 return true;
989 if (Attrs.hasAttributes() || !FwdRefAttrGrps.empty()) {
990 GV->setAttributes(AttributeSet::get(Context, Attrs));
991 ForwardRefAttrGroups[GV] = FwdRefAttrGrps;
992 }
993
994 return false;
995}
996
997/// ParseUnnamedAttrGrp
998/// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
999bool LLParser::ParseUnnamedAttrGrp() {
1000 assert(Lex.getKind() == lltok::kw_attributes)((Lex.getKind() == lltok::kw_attributes) ? static_cast<void
> (0) : __assert_fail ("Lex.getKind() == lltok::kw_attributes"
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 1000, __PRETTY_FUNCTION__))
;
1001 LocTy AttrGrpLoc = Lex.getLoc();
1002 Lex.Lex();
1003
1004 if (Lex.getKind() != lltok::AttrGrpID)
1005 return TokError("expected attribute group id");
1006
1007 unsigned VarID = Lex.getUIntVal();
1008 std::vector<unsigned> unused;
1009 LocTy BuiltinLoc;
1010 Lex.Lex();
1011
1012 if (ParseToken(lltok::equal, "expected '=' here") ||
1013 ParseToken(lltok::lbrace, "expected '{' here") ||
1014 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
1015 BuiltinLoc) ||
1016 ParseToken(lltok::rbrace, "expected end of attribute group"))
1017 return true;
1018
1019 if (!NumberedAttrBuilders[VarID].hasAttributes())
1020 return Error(AttrGrpLoc, "attribute group has no attributes");
1021
1022 return false;
1023}
1024
1025/// ParseFnAttributeValuePairs
1026/// ::= <attr> | <attr> '=' <value>
1027bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
1028 std::vector<unsigned> &FwdRefAttrGrps,
1029 bool inAttrGrp, LocTy &BuiltinLoc) {
1030 bool HaveError = false;
1031
1032 B.clear();
1033
1034 while (true) {
1035 lltok::Kind Token = Lex.getKind();
1036 if (Token == lltok::kw_builtin)
1037 BuiltinLoc = Lex.getLoc();
1038 switch (Token) {
1039 default:
1040 if (!inAttrGrp) return HaveError;
1041 return Error(Lex.getLoc(), "unterminated attribute group");
1042 case lltok::rbrace:
1043 // Finished.
1044 return false;
1045
1046 case lltok::AttrGrpID: {
1047 // Allow a function to reference an attribute group:
1048 //
1049 // define void @foo() #1 { ... }
1050 if (inAttrGrp)
1051 HaveError |=
1052 Error(Lex.getLoc(),
1053 "cannot have an attribute group reference in an attribute group");
1054
1055 unsigned AttrGrpNum = Lex.getUIntVal();
1056 if (inAttrGrp) break;
1057
1058 // Save the reference to the attribute group. We'll fill it in later.
1059 FwdRefAttrGrps.push_back(AttrGrpNum);
1060 break;
1061 }
1062 // Target-dependent attributes:
1063 case lltok::StringConstant: {
1064 if (ParseStringAttribute(B))
1065 return true;
1066 continue;
1067 }
1068
1069 // Target-independent attributes:
1070 case lltok::kw_align: {
1071 // As a hack, we allow function alignment to be initially parsed as an
1072 // attribute on a function declaration/definition or added to an attribute
1073 // group and later moved to the alignment field.
1074 unsigned Alignment;
1075 if (inAttrGrp) {
1076 Lex.Lex();
1077 if (ParseToken(lltok::equal, "expected '=' here") ||
1078 ParseUInt32(Alignment))
1079 return true;
1080 } else {
1081 if (ParseOptionalAlignment(Alignment))
1082 return true;
1083 }
1084 B.addAlignmentAttr(Alignment);
1085 continue;
1086 }
1087 case lltok::kw_alignstack: {
1088 unsigned Alignment;
1089 if (inAttrGrp) {
1090 Lex.Lex();
1091 if (ParseToken(lltok::equal, "expected '=' here") ||
1092 ParseUInt32(Alignment))
1093 return true;
1094 } else {
1095 if (ParseOptionalStackAlignment(Alignment))
1096 return true;
1097 }
1098 B.addStackAlignmentAttr(Alignment);
1099 continue;
1100 }
1101 case lltok::kw_allocsize: {
1102 unsigned ElemSizeArg;
1103 Optional<unsigned> NumElemsArg;
1104 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1105 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1106 return true;
1107 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1108 continue;
1109 }
1110 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1111 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1112 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1113 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1114 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1115 case lltok::kw_inaccessiblememonly:
1116 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1117 case lltok::kw_inaccessiblemem_or_argmemonly:
1118 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1119 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1120 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1121 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1122 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1123 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1124 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1125 case lltok::kw_noimplicitfloat:
1126 B.addAttribute(Attribute::NoImplicitFloat); break;
1127 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1128 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1129 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1130 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1131 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1132 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1133 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1134 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1135 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1136 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1137 case lltok::kw_returns_twice:
1138 B.addAttribute(Attribute::ReturnsTwice); break;
1139 case lltok::kw_speculatable: B.addAttribute(Attribute::Speculatable); break;
1140 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1141 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1142 case lltok::kw_sspstrong:
1143 B.addAttribute(Attribute::StackProtectStrong); break;
1144 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1145 case lltok::kw_sanitize_address:
1146 B.addAttribute(Attribute::SanitizeAddress); break;
1147 case lltok::kw_sanitize_thread:
1148 B.addAttribute(Attribute::SanitizeThread); break;
1149 case lltok::kw_sanitize_memory:
1150 B.addAttribute(Attribute::SanitizeMemory); break;
1151 case lltok::kw_strictfp: B.addAttribute(Attribute::StrictFP); break;
1152 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1153 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1154
1155 // Error handling.
1156 case lltok::kw_inreg:
1157 case lltok::kw_signext:
1158 case lltok::kw_zeroext:
1159 HaveError |=
1160 Error(Lex.getLoc(),
1161 "invalid use of attribute on a function");
1162 break;
1163 case lltok::kw_byval:
1164 case lltok::kw_dereferenceable:
1165 case lltok::kw_dereferenceable_or_null:
1166 case lltok::kw_inalloca:
1167 case lltok::kw_nest:
1168 case lltok::kw_noalias:
1169 case lltok::kw_nocapture:
1170 case lltok::kw_nonnull:
1171 case lltok::kw_returned:
1172 case lltok::kw_sret:
1173 case lltok::kw_swifterror:
1174 case lltok::kw_swiftself:
1175 HaveError |=
1176 Error(Lex.getLoc(),
1177 "invalid use of parameter-only attribute on a function");
1178 break;
1179 }
1180
1181 Lex.Lex();
1182 }
1183}
1184
1185//===----------------------------------------------------------------------===//
1186// GlobalValue Reference/Resolution Routines.
1187//===----------------------------------------------------------------------===//
1188
1189static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1190 const std::string &Name) {
1191 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1192 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1193 else
1194 return new GlobalVariable(*M, PTy->getElementType(), false,
1195 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1196 nullptr, GlobalVariable::NotThreadLocal,
1197 PTy->getAddressSpace());
1198}
1199
1200/// GetGlobalVal - Get a value with the specified name or ID, creating a
1201/// forward reference record if needed. This can return null if the value
1202/// exists but does not have the right type.
1203GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1204 LocTy Loc) {
1205 PointerType *PTy = dyn_cast<PointerType>(Ty);
1206 if (!PTy) {
1207 Error(Loc, "global variable reference must have pointer type");
1208 return nullptr;
1209 }
1210
1211 // Look this name up in the normal function symbol table.
1212 GlobalValue *Val =
1213 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1214
1215 // If this is a forward reference for the value, see if we already created a
1216 // forward ref record.
1217 if (!Val) {
1218 auto I = ForwardRefVals.find(Name);
1219 if (I != ForwardRefVals.end())
1220 Val = I->second.first;
1221 }
1222
1223 // If we have the value in the symbol table or fwd-ref table, return it.
1224 if (Val) {
1225 if (Val->getType() == Ty) return Val;
1226 Error(Loc, "'@" + Name + "' defined with type '" +
1227 getTypeString(Val->getType()) + "'");
1228 return nullptr;
1229 }
1230
1231 // Otherwise, create a new forward reference for this value and remember it.
1232 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1233 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1234 return FwdVal;
1235}
1236
1237GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1238 PointerType *PTy = dyn_cast<PointerType>(Ty);
1239 if (!PTy) {
1240 Error(Loc, "global variable reference must have pointer type");
1241 return nullptr;
1242 }
1243
1244 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1245
1246 // If this is a forward reference for the value, see if we already created a
1247 // forward ref record.
1248 if (!Val) {
1249 auto I = ForwardRefValIDs.find(ID);
1250 if (I != ForwardRefValIDs.end())
1251 Val = I->second.first;
1252 }
1253
1254 // If we have the value in the symbol table or fwd-ref table, return it.
1255 if (Val) {
1256 if (Val->getType() == Ty) return Val;
1257 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1258 getTypeString(Val->getType()) + "'");
1259 return nullptr;
1260 }
1261
1262 // Otherwise, create a new forward reference for this value and remember it.
1263 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1264 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1265 return FwdVal;
1266}
1267
1268//===----------------------------------------------------------------------===//
1269// Comdat Reference/Resolution Routines.
1270//===----------------------------------------------------------------------===//
1271
1272Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1273 // Look this name up in the comdat symbol table.
1274 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1275 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1276 if (I != ComdatSymTab.end())
1277 return &I->second;
1278
1279 // Otherwise, create a new forward reference for this value and remember it.
1280 Comdat *C = M->getOrInsertComdat(Name);
1281 ForwardRefComdats[Name] = Loc;
1282 return C;
1283}
1284
1285//===----------------------------------------------------------------------===//
1286// Helper Routines.
1287//===----------------------------------------------------------------------===//
1288
1289/// ParseToken - If the current token has the specified kind, eat it and return
1290/// success. Otherwise, emit the specified error and return failure.
1291bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1292 if (Lex.getKind() != T)
1293 return TokError(ErrMsg);
1294 Lex.Lex();
1295 return false;
1296}
1297
1298/// ParseStringConstant
1299/// ::= StringConstant
1300bool LLParser::ParseStringConstant(std::string &Result) {
1301 if (Lex.getKind() != lltok::StringConstant)
1302 return TokError("expected string constant");
1303 Result = Lex.getStrVal();
1304 Lex.Lex();
1305 return false;
1306}
1307
1308/// ParseUInt32
1309/// ::= uint32
1310bool LLParser::ParseUInt32(uint32_t &Val) {
1311 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1312 return TokError("expected integer");
1313 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1314 if (Val64 != unsigned(Val64))
1315 return TokError("expected 32-bit integer (too large)");
1316 Val = Val64;
1317 Lex.Lex();
1318 return false;
1319}
1320
1321/// ParseUInt64
1322/// ::= uint64
1323bool LLParser::ParseUInt64(uint64_t &Val) {
1324 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1325 return TokError("expected integer");
1326 Val = Lex.getAPSIntVal().getLimitedValue();
1327 Lex.Lex();
1328 return false;
1329}
1330
1331/// ParseTLSModel
1332/// := 'localdynamic'
1333/// := 'initialexec'
1334/// := 'localexec'
1335bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1336 switch (Lex.getKind()) {
1337 default:
1338 return TokError("expected localdynamic, initialexec or localexec");
1339 case lltok::kw_localdynamic:
1340 TLM = GlobalVariable::LocalDynamicTLSModel;
1341 break;
1342 case lltok::kw_initialexec:
1343 TLM = GlobalVariable::InitialExecTLSModel;
1344 break;
1345 case lltok::kw_localexec:
1346 TLM = GlobalVariable::LocalExecTLSModel;
1347 break;
1348 }
1349
1350 Lex.Lex();
1351 return false;
1352}
1353
1354/// ParseOptionalThreadLocal
1355/// := /*empty*/
1356/// := 'thread_local'
1357/// := 'thread_local' '(' tlsmodel ')'
1358bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1359 TLM = GlobalVariable::NotThreadLocal;
1360 if (!EatIfPresent(lltok::kw_thread_local))
1361 return false;
1362
1363 TLM = GlobalVariable::GeneralDynamicTLSModel;
1364 if (Lex.getKind() == lltok::lparen) {
1365 Lex.Lex();
1366 return ParseTLSModel(TLM) ||
1367 ParseToken(lltok::rparen, "expected ')' after thread local model");
1368 }
1369 return false;
1370}
1371
1372/// ParseOptionalAddrSpace
1373/// := /*empty*/
1374/// := 'addrspace' '(' uint32 ')'
1375bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1376 AddrSpace = 0;
1377 if (!EatIfPresent(lltok::kw_addrspace))
1378 return false;
1379 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1380 ParseUInt32(AddrSpace) ||
1381 ParseToken(lltok::rparen, "expected ')' in address space");
1382}
1383
1384/// ParseStringAttribute
1385/// := StringConstant
1386/// := StringConstant '=' StringConstant
1387bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1388 std::string Attr = Lex.getStrVal();
1389 Lex.Lex();
1390 std::string Val;
1391 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1392 return true;
1393 B.addAttribute(Attr, Val);
1394 return false;
1395}
1396
1397/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1398bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1399 bool HaveError = false;
1400
1401 B.clear();
1402
1403 while (true) {
1404 lltok::Kind Token = Lex.getKind();
1405 switch (Token) {
1406 default: // End of attributes.
1407 return HaveError;
1408 case lltok::StringConstant: {
1409 if (ParseStringAttribute(B))
1410 return true;
1411 continue;
1412 }
1413 case lltok::kw_align: {
1414 unsigned Alignment;
1415 if (ParseOptionalAlignment(Alignment))
1416 return true;
1417 B.addAlignmentAttr(Alignment);
1418 continue;
1419 }
1420 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1421 case lltok::kw_dereferenceable: {
1422 uint64_t Bytes;
1423 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1424 return true;
1425 B.addDereferenceableAttr(Bytes);
1426 continue;
1427 }
1428 case lltok::kw_dereferenceable_or_null: {
1429 uint64_t Bytes;
1430 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1431 return true;
1432 B.addDereferenceableOrNullAttr(Bytes);
1433 continue;
1434 }
1435 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1436 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1437 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1438 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1439 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1440 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1441 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1442 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1443 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1444 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1445 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1446 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1447 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1448 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1449 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1450
1451 case lltok::kw_alignstack:
1452 case lltok::kw_alwaysinline:
1453 case lltok::kw_argmemonly:
1454 case lltok::kw_builtin:
1455 case lltok::kw_inlinehint:
1456 case lltok::kw_jumptable:
1457 case lltok::kw_minsize:
1458 case lltok::kw_naked:
1459 case lltok::kw_nobuiltin:
1460 case lltok::kw_noduplicate:
1461 case lltok::kw_noimplicitfloat:
1462 case lltok::kw_noinline:
1463 case lltok::kw_nonlazybind:
1464 case lltok::kw_noredzone:
1465 case lltok::kw_noreturn:
1466 case lltok::kw_nounwind:
1467 case lltok::kw_optnone:
1468 case lltok::kw_optsize:
1469 case lltok::kw_returns_twice:
1470 case lltok::kw_sanitize_address:
1471 case lltok::kw_sanitize_memory:
1472 case lltok::kw_sanitize_thread:
1473 case lltok::kw_ssp:
1474 case lltok::kw_sspreq:
1475 case lltok::kw_sspstrong:
1476 case lltok::kw_safestack:
1477 case lltok::kw_strictfp:
1478 case lltok::kw_uwtable:
1479 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1480 break;
1481 }
1482
1483 Lex.Lex();
1484 }
1485}
1486
1487/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1488bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1489 bool HaveError = false;
1490
1491 B.clear();
1492
1493 while (true) {
1494 lltok::Kind Token = Lex.getKind();
1495 switch (Token) {
1496 default: // End of attributes.
1497 return HaveError;
1498 case lltok::StringConstant: {
1499 if (ParseStringAttribute(B))
1500 return true;
1501 continue;
1502 }
1503 case lltok::kw_dereferenceable: {
1504 uint64_t Bytes;
1505 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1506 return true;
1507 B.addDereferenceableAttr(Bytes);
1508 continue;
1509 }
1510 case lltok::kw_dereferenceable_or_null: {
1511 uint64_t Bytes;
1512 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1513 return true;
1514 B.addDereferenceableOrNullAttr(Bytes);
1515 continue;
1516 }
1517 case lltok::kw_align: {
1518 unsigned Alignment;
1519 if (ParseOptionalAlignment(Alignment))
1520 return true;
1521 B.addAlignmentAttr(Alignment);
1522 continue;
1523 }
1524 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1525 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1526 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1527 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1528 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1529
1530 // Error handling.
1531 case lltok::kw_byval:
1532 case lltok::kw_inalloca:
1533 case lltok::kw_nest:
1534 case lltok::kw_nocapture:
1535 case lltok::kw_returned:
1536 case lltok::kw_sret:
1537 case lltok::kw_swifterror:
1538 case lltok::kw_swiftself:
1539 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1540 break;
1541
1542 case lltok::kw_alignstack:
1543 case lltok::kw_alwaysinline:
1544 case lltok::kw_argmemonly:
1545 case lltok::kw_builtin:
1546 case lltok::kw_cold:
1547 case lltok::kw_inlinehint:
1548 case lltok::kw_jumptable:
1549 case lltok::kw_minsize:
1550 case lltok::kw_naked:
1551 case lltok::kw_nobuiltin:
1552 case lltok::kw_noduplicate:
1553 case lltok::kw_noimplicitfloat:
1554 case lltok::kw_noinline:
1555 case lltok::kw_nonlazybind:
1556 case lltok::kw_noredzone:
1557 case lltok::kw_noreturn:
1558 case lltok::kw_nounwind:
1559 case lltok::kw_optnone:
1560 case lltok::kw_optsize:
1561 case lltok::kw_returns_twice:
1562 case lltok::kw_sanitize_address:
1563 case lltok::kw_sanitize_memory:
1564 case lltok::kw_sanitize_thread:
1565 case lltok::kw_ssp:
1566 case lltok::kw_sspreq:
1567 case lltok::kw_sspstrong:
1568 case lltok::kw_safestack:
1569 case lltok::kw_strictfp:
1570 case lltok::kw_uwtable:
1571 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1572 break;
1573
1574 case lltok::kw_readnone:
1575 case lltok::kw_readonly:
1576 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1577 }
1578
1579 Lex.Lex();
1580 }
1581}
1582
1583static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1584 HasLinkage = true;
1585 switch (Kind) {
1586 default:
1587 HasLinkage = false;
1588 return GlobalValue::ExternalLinkage;
1589 case lltok::kw_private:
1590 return GlobalValue::PrivateLinkage;
1591 case lltok::kw_internal:
1592 return GlobalValue::InternalLinkage;
1593 case lltok::kw_weak:
1594 return GlobalValue::WeakAnyLinkage;
1595 case lltok::kw_weak_odr:
1596 return GlobalValue::WeakODRLinkage;
1597 case lltok::kw_linkonce:
1598 return GlobalValue::LinkOnceAnyLinkage;
1599 case lltok::kw_linkonce_odr:
1600 return GlobalValue::LinkOnceODRLinkage;
1601 case lltok::kw_available_externally:
1602 return GlobalValue::AvailableExternallyLinkage;
1603 case lltok::kw_appending:
1604 return GlobalValue::AppendingLinkage;
1605 case lltok::kw_common:
1606 return GlobalValue::CommonLinkage;
1607 case lltok::kw_extern_weak:
1608 return GlobalValue::ExternalWeakLinkage;
1609 case lltok::kw_external:
1610 return GlobalValue::ExternalLinkage;
1611 }
1612}
1613
1614/// ParseOptionalLinkage
1615/// ::= /*empty*/
1616/// ::= 'private'
1617/// ::= 'internal'
1618/// ::= 'weak'
1619/// ::= 'weak_odr'
1620/// ::= 'linkonce'
1621/// ::= 'linkonce_odr'
1622/// ::= 'available_externally'
1623/// ::= 'appending'
1624/// ::= 'common'
1625/// ::= 'extern_weak'
1626/// ::= 'external'
1627bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1628 unsigned &Visibility,
1629 unsigned &DLLStorageClass,
1630 bool &DSOLocal) {
1631 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1632 if (HasLinkage)
1633 Lex.Lex();
1634 ParseOptionalDSOLocal(DSOLocal);
1635 ParseOptionalVisibility(Visibility);
1636 ParseOptionalDLLStorageClass(DLLStorageClass);
1637
1638 if (DSOLocal && DLLStorageClass == GlobalValue::DLLImportStorageClass) {
1639 return Error(Lex.getLoc(), "dso_location and DLL-StorageClass mismatch");
1640 }
1641
1642 return false;
1643}
1644
1645void LLParser::ParseOptionalDSOLocal(bool &DSOLocal) {
1646 switch (Lex.getKind()) {
1647 default:
1648 DSOLocal = false;
1649 break;
1650 case lltok::kw_dso_local:
1651 DSOLocal = true;
1652 Lex.Lex();
1653 break;
1654 case lltok::kw_dso_preemptable:
1655 DSOLocal = false;
1656 Lex.Lex();
1657 break;
1658 }
1659}
1660
1661/// ParseOptionalVisibility
1662/// ::= /*empty*/
1663/// ::= 'default'
1664/// ::= 'hidden'
1665/// ::= 'protected'
1666///
1667void LLParser::ParseOptionalVisibility(unsigned &Res) {
1668 switch (Lex.getKind()) {
1669 default:
1670 Res = GlobalValue::DefaultVisibility;
1671 return;
1672 case lltok::kw_default:
1673 Res = GlobalValue::DefaultVisibility;
1674 break;
1675 case lltok::kw_hidden:
1676 Res = GlobalValue::HiddenVisibility;
1677 break;
1678 case lltok::kw_protected:
1679 Res = GlobalValue::ProtectedVisibility;
1680 break;
1681 }
1682 Lex.Lex();
1683}
1684
1685/// ParseOptionalDLLStorageClass
1686/// ::= /*empty*/
1687/// ::= 'dllimport'
1688/// ::= 'dllexport'
1689///
1690void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1691 switch (Lex.getKind()) {
1692 default:
1693 Res = GlobalValue::DefaultStorageClass;
1694 return;
1695 case lltok::kw_dllimport:
1696 Res = GlobalValue::DLLImportStorageClass;
1697 break;
1698 case lltok::kw_dllexport:
1699 Res = GlobalValue::DLLExportStorageClass;
1700 break;
1701 }
1702 Lex.Lex();
1703}
1704
1705/// ParseOptionalCallingConv
1706/// ::= /*empty*/
1707/// ::= 'ccc'
1708/// ::= 'fastcc'
1709/// ::= 'intel_ocl_bicc'
1710/// ::= 'coldcc'
1711/// ::= 'x86_stdcallcc'
1712/// ::= 'x86_fastcallcc'
1713/// ::= 'x86_thiscallcc'
1714/// ::= 'x86_vectorcallcc'
1715/// ::= 'arm_apcscc'
1716/// ::= 'arm_aapcscc'
1717/// ::= 'arm_aapcs_vfpcc'
1718/// ::= 'msp430_intrcc'
1719/// ::= 'avr_intrcc'
1720/// ::= 'avr_signalcc'
1721/// ::= 'ptx_kernel'
1722/// ::= 'ptx_device'
1723/// ::= 'spir_func'
1724/// ::= 'spir_kernel'
1725/// ::= 'x86_64_sysvcc'
1726/// ::= 'win64cc'
1727/// ::= 'webkit_jscc'
1728/// ::= 'anyregcc'
1729/// ::= 'preserve_mostcc'
1730/// ::= 'preserve_allcc'
1731/// ::= 'ghccc'
1732/// ::= 'swiftcc'
1733/// ::= 'x86_intrcc'
1734/// ::= 'hhvmcc'
1735/// ::= 'hhvm_ccc'
1736/// ::= 'cxx_fast_tlscc'
1737/// ::= 'amdgpu_vs'
1738/// ::= 'amdgpu_ls'
1739/// ::= 'amdgpu_hs'
1740/// ::= 'amdgpu_es'
1741/// ::= 'amdgpu_gs'
1742/// ::= 'amdgpu_ps'
1743/// ::= 'amdgpu_cs'
1744/// ::= 'amdgpu_kernel'
1745/// ::= 'cc' UINT
1746///
1747bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1748 switch (Lex.getKind()) {
1749 default: CC = CallingConv::C; return false;
1750 case lltok::kw_ccc: CC = CallingConv::C; break;
1751 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1752 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1753 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1754 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1755 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1756 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1757 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1758 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1759 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1760 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1761 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1762 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1763 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1764 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1765 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1766 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1767 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1768 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1769 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1770 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1771 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1772 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1773 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1774 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1775 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1776 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1777 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1778 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1779 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1780 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1781 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1782 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1783 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1784 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1785 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1786 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1787 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1788 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1789 case lltok::kw_cc: {
1790 Lex.Lex();
1791 return ParseUInt32(CC);
1792 }
1793 }
1794
1795 Lex.Lex();
1796 return false;
1797}
1798
1799/// ParseMetadataAttachment
1800/// ::= !dbg !42
1801bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1802 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment")((Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment"
) ? static_cast<void> (0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar && \"Expected metadata attachment\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 1802, __PRETTY_FUNCTION__))
;
1803
1804 std::string Name = Lex.getStrVal();
1805 Kind = M->getMDKindID(Name);
1806 Lex.Lex();
1807
1808 return ParseMDNode(MD);
1809}
1810
1811/// ParseInstructionMetadata
1812/// ::= !dbg !42 (',' !dbg !57)*
1813bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1814 do {
1815 if (Lex.getKind() != lltok::MetadataVar)
1816 return TokError("expected metadata after comma");
1817
1818 unsigned MDK;
1819 MDNode *N;
1820 if (ParseMetadataAttachment(MDK, N))
1821 return true;
1822
1823 Inst.setMetadata(MDK, N);
1824 if (MDK == LLVMContext::MD_tbaa)
1825 InstsWithTBAATag.push_back(&Inst);
1826
1827 // If this is the end of the list, we're done.
1828 } while (EatIfPresent(lltok::comma));
1829 return false;
1830}
1831
1832/// ParseGlobalObjectMetadataAttachment
1833/// ::= !dbg !57
1834bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1835 unsigned MDK;
1836 MDNode *N;
1837 if (ParseMetadataAttachment(MDK, N))
1838 return true;
1839
1840 GO.addMetadata(MDK, *N);
1841 return false;
1842}
1843
1844/// ParseOptionalFunctionMetadata
1845/// ::= (!dbg !57)*
1846bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1847 while (Lex.getKind() == lltok::MetadataVar)
1848 if (ParseGlobalObjectMetadataAttachment(F))
1849 return true;
1850 return false;
1851}
1852
1853/// ParseOptionalAlignment
1854/// ::= /* empty */
1855/// ::= 'align' 4
1856bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1857 Alignment = 0;
1858 if (!EatIfPresent(lltok::kw_align))
1859 return false;
1860 LocTy AlignLoc = Lex.getLoc();
1861 if (ParseUInt32(Alignment)) return true;
1862 if (!isPowerOf2_32(Alignment))
1863 return Error(AlignLoc, "alignment is not a power of two");
1864 if (Alignment > Value::MaximumAlignment)
1865 return Error(AlignLoc, "huge alignments are not supported yet");
1866 return false;
1867}
1868
1869/// ParseOptionalDerefAttrBytes
1870/// ::= /* empty */
1871/// ::= AttrKind '(' 4 ')'
1872///
1873/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1874bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1875 uint64_t &Bytes) {
1876 assert((AttrKind == lltok::kw_dereferenceable ||(((AttrKind == lltok::kw_dereferenceable || AttrKind == lltok
::kw_dereferenceable_or_null) && "contract!") ? static_cast
<void> (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 1878, __PRETTY_FUNCTION__))
1877 AttrKind == lltok::kw_dereferenceable_or_null) &&(((AttrKind == lltok::kw_dereferenceable || AttrKind == lltok
::kw_dereferenceable_or_null) && "contract!") ? static_cast
<void> (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 1878, __PRETTY_FUNCTION__))
1878 "contract!")(((AttrKind == lltok::kw_dereferenceable || AttrKind == lltok
::kw_dereferenceable_or_null) && "contract!") ? static_cast
<void> (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 1878, __PRETTY_FUNCTION__))
;
1879
1880 Bytes = 0;
1881 if (!EatIfPresent(AttrKind))
1882 return false;
1883 LocTy ParenLoc = Lex.getLoc();
1884 if (!EatIfPresent(lltok::lparen))
1885 return Error(ParenLoc, "expected '('");
1886 LocTy DerefLoc = Lex.getLoc();
1887 if (ParseUInt64(Bytes)) return true;
1888 ParenLoc = Lex.getLoc();
1889 if (!EatIfPresent(lltok::rparen))
1890 return Error(ParenLoc, "expected ')'");
1891 if (!Bytes)
1892 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1893 return false;
1894}
1895
1896/// ParseOptionalCommaAlign
1897/// ::=
1898/// ::= ',' align 4
1899///
1900/// This returns with AteExtraComma set to true if it ate an excess comma at the
1901/// end.
1902bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1903 bool &AteExtraComma) {
1904 AteExtraComma = false;
1905 while (EatIfPresent(lltok::comma)) {
1906 // Metadata at the end is an early exit.
1907 if (Lex.getKind() == lltok::MetadataVar) {
1908 AteExtraComma = true;
1909 return false;
1910 }
1911
1912 if (Lex.getKind() != lltok::kw_align)
1913 return Error(Lex.getLoc(), "expected metadata or 'align'");
1914
1915 if (ParseOptionalAlignment(Alignment)) return true;
1916 }
1917
1918 return false;
1919}
1920
1921/// ParseOptionalCommaAddrSpace
1922/// ::=
1923/// ::= ',' addrspace(1)
1924///
1925/// This returns with AteExtraComma set to true if it ate an excess comma at the
1926/// end.
1927bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
1928 LocTy &Loc,
1929 bool &AteExtraComma) {
1930 AteExtraComma = false;
1931 while (EatIfPresent(lltok::comma)) {
1932 // Metadata at the end is an early exit.
1933 if (Lex.getKind() == lltok::MetadataVar) {
1934 AteExtraComma = true;
1935 return false;
1936 }
1937
1938 Loc = Lex.getLoc();
1939 if (Lex.getKind() != lltok::kw_addrspace)
1940 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
1941
1942 if (ParseOptionalAddrSpace(AddrSpace))
1943 return true;
1944 }
1945
1946 return false;
1947}
1948
1949bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1950 Optional<unsigned> &HowManyArg) {
1951 Lex.Lex();
1952
1953 auto StartParen = Lex.getLoc();
1954 if (!EatIfPresent(lltok::lparen))
1955 return Error(StartParen, "expected '('");
1956
1957 if (ParseUInt32(BaseSizeArg))
1958 return true;
1959
1960 if (EatIfPresent(lltok::comma)) {
1961 auto HowManyAt = Lex.getLoc();
1962 unsigned HowMany;
1963 if (ParseUInt32(HowMany))
1964 return true;
1965 if (HowMany == BaseSizeArg)
1966 return Error(HowManyAt,
1967 "'allocsize' indices can't refer to the same parameter");
1968 HowManyArg = HowMany;
1969 } else
1970 HowManyArg = None;
1971
1972 auto EndParen = Lex.getLoc();
1973 if (!EatIfPresent(lltok::rparen))
1974 return Error(EndParen, "expected ')'");
1975 return false;
1976}
1977
1978/// ParseScopeAndOrdering
1979/// if isAtomic: ::= SyncScope? AtomicOrdering
1980/// else: ::=
1981///
1982/// This sets Scope and Ordering to the parsed values.
1983bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
1984 AtomicOrdering &Ordering) {
1985 if (!isAtomic)
1986 return false;
1987
1988 return ParseScope(SSID) || ParseOrdering(Ordering);
1989}
1990
1991/// ParseScope
1992/// ::= syncscope("singlethread" | "<target scope>")?
1993///
1994/// This sets synchronization scope ID to the ID of the parsed value.
1995bool LLParser::ParseScope(SyncScope::ID &SSID) {
1996 SSID = SyncScope::System;
1997 if (EatIfPresent(lltok::kw_syncscope)) {
1998 auto StartParenAt = Lex.getLoc();
1999 if (!EatIfPresent(lltok::lparen))
2000 return Error(StartParenAt, "Expected '(' in syncscope");
2001
2002 std::string SSN;
2003 auto SSNAt = Lex.getLoc();
2004 if (ParseStringConstant(SSN))
2005 return Error(SSNAt, "Expected synchronization scope name");
2006
2007 auto EndParenAt = Lex.getLoc();
2008 if (!EatIfPresent(lltok::rparen))
2009 return Error(EndParenAt, "Expected ')' in syncscope");
2010
2011 SSID = Context.getOrInsertSyncScopeID(SSN);
2012 }
2013
2014 return false;
2015}
2016
2017/// ParseOrdering
2018/// ::= AtomicOrdering
2019///
2020/// This sets Ordering to the parsed value.
2021bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
2022 switch (Lex.getKind()) {
2023 default: return TokError("Expected ordering on atomic instruction");
2024 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
2025 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
2026 // Not specified yet:
2027 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
2028 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
2029 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
2030 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
2031 case lltok::kw_seq_cst:
2032 Ordering = AtomicOrdering::SequentiallyConsistent;
2033 break;
2034 }
2035 Lex.Lex();
2036 return false;
2037}
2038
2039/// ParseOptionalStackAlignment
2040/// ::= /* empty */
2041/// ::= 'alignstack' '(' 4 ')'
2042bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2043 Alignment = 0;
2044 if (!EatIfPresent(lltok::kw_alignstack))
2045 return false;
2046 LocTy ParenLoc = Lex.getLoc();
2047 if (!EatIfPresent(lltok::lparen))
2048 return Error(ParenLoc, "expected '('");
2049 LocTy AlignLoc = Lex.getLoc();
2050 if (ParseUInt32(Alignment)) return true;
2051 ParenLoc = Lex.getLoc();
2052 if (!EatIfPresent(lltok::rparen))
2053 return Error(ParenLoc, "expected ')'");
2054 if (!isPowerOf2_32(Alignment))
2055 return Error(AlignLoc, "stack alignment is not a power of two");
2056 return false;
2057}
2058
2059/// ParseIndexList - This parses the index list for an insert/extractvalue
2060/// instruction. This sets AteExtraComma in the case where we eat an extra
2061/// comma at the end of the line and find that it is followed by metadata.
2062/// Clients that don't allow metadata can call the version of this function that
2063/// only takes one argument.
2064///
2065/// ParseIndexList
2066/// ::= (',' uint32)+
2067///
2068bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2069 bool &AteExtraComma) {
2070 AteExtraComma = false;
2071
2072 if (Lex.getKind() != lltok::comma)
2073 return TokError("expected ',' as start of index list");
2074
2075 while (EatIfPresent(lltok::comma)) {
2076 if (Lex.getKind() == lltok::MetadataVar) {
2077 if (Indices.empty()) return TokError("expected index");
2078 AteExtraComma = true;
2079 return false;
2080 }
2081 unsigned Idx = 0;
2082 if (ParseUInt32(Idx)) return true;
2083 Indices.push_back(Idx);
2084 }
2085
2086 return false;
2087}
2088
2089//===----------------------------------------------------------------------===//
2090// Type Parsing.
2091//===----------------------------------------------------------------------===//
2092
2093/// ParseType - Parse a type.
2094bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2095 SMLoc TypeLoc = Lex.getLoc();
2096 switch (Lex.getKind()) {
2097 default:
2098 return TokError(Msg);
2099 case lltok::Type:
2100 // Type ::= 'float' | 'void' (etc)
2101 Result = Lex.getTyVal();
2102 Lex.Lex();
2103 break;
2104 case lltok::lbrace:
2105 // Type ::= StructType
2106 if (ParseAnonStructType(Result, false))
2107 return true;
2108 break;
2109 case lltok::lsquare:
2110 // Type ::= '[' ... ']'
2111 Lex.Lex(); // eat the lsquare.
2112 if (ParseArrayVectorType(Result, false))
2113 return true;
2114 break;
2115 case lltok::less: // Either vector or packed struct.
2116 // Type ::= '<' ... '>'
2117 Lex.Lex();
2118 if (Lex.getKind() == lltok::lbrace) {
2119 if (ParseAnonStructType(Result, true) ||
2120 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2121 return true;
2122 } else if (ParseArrayVectorType(Result, true))
2123 return true;
2124 break;
2125 case lltok::LocalVar: {
2126 // Type ::= %foo
2127 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2128
2129 // If the type hasn't been defined yet, create a forward definition and
2130 // remember where that forward def'n was seen (in case it never is defined).
2131 if (!Entry.first) {
2132 Entry.first = StructType::create(Context, Lex.getStrVal());
2133 Entry.second = Lex.getLoc();
2134 }
2135 Result = Entry.first;
2136 Lex.Lex();
2137 break;
2138 }
2139
2140 case lltok::LocalVarID: {
2141 // Type ::= %4
2142 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2143
2144 // If the type hasn't been defined yet, create a forward definition and
2145 // remember where that forward def'n was seen (in case it never is defined).
2146 if (!Entry.first) {
2147 Entry.first = StructType::create(Context);
2148 Entry.second = Lex.getLoc();
2149 }
2150 Result = Entry.first;
2151 Lex.Lex();
2152 break;
2153 }
2154 }
2155
2156 // Parse the type suffixes.
2157 while (true) {
2158 switch (Lex.getKind()) {
2159 // End of type.
2160 default:
2161 if (!AllowVoid && Result->isVoidTy())
2162 return Error(TypeLoc, "void type only allowed for function results");
2163 return false;
2164
2165 // Type ::= Type '*'
2166 case lltok::star:
2167 if (Result->isLabelTy())
2168 return TokError("basic block pointers are invalid");
2169 if (Result->isVoidTy())
2170 return TokError("pointers to void are invalid - use i8* instead");
2171 if (!PointerType::isValidElementType(Result))
2172 return TokError("pointer to this type is invalid");
2173 Result = PointerType::getUnqual(Result);
2174 Lex.Lex();
2175 break;
2176
2177 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2178 case lltok::kw_addrspace: {
2179 if (Result->isLabelTy())
2180 return TokError("basic block pointers are invalid");
2181 if (Result->isVoidTy())
2182 return TokError("pointers to void are invalid; use i8* instead");
2183 if (!PointerType::isValidElementType(Result))
2184 return TokError("pointer to this type is invalid");
2185 unsigned AddrSpace;
2186 if (ParseOptionalAddrSpace(AddrSpace) ||
2187 ParseToken(lltok::star, "expected '*' in address space"))
2188 return true;
2189
2190 Result = PointerType::get(Result, AddrSpace);
2191 break;
2192 }
2193
2194 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2195 case lltok::lparen:
2196 if (ParseFunctionType(Result))
2197 return true;
2198 break;
2199 }
2200 }
2201}
2202
2203/// ParseParameterList
2204/// ::= '(' ')'
2205/// ::= '(' Arg (',' Arg)* ')'
2206/// Arg
2207/// ::= Type OptionalAttributes Value OptionalAttributes
2208bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2209 PerFunctionState &PFS, bool IsMustTailCall,
2210 bool InVarArgsFunc) {
2211 if (ParseToken(lltok::lparen, "expected '(' in call"))
2212 return true;
2213
2214 while (Lex.getKind() != lltok::rparen) {
2215 // If this isn't the first argument, we need a comma.
2216 if (!ArgList.empty() &&
2217 ParseToken(lltok::comma, "expected ',' in argument list"))
2218 return true;
2219
2220 // Parse an ellipsis if this is a musttail call in a variadic function.
2221 if (Lex.getKind() == lltok::dotdotdot) {
2222 const char *Msg = "unexpected ellipsis in argument list for ";
2223 if (!IsMustTailCall)
2224 return TokError(Twine(Msg) + "non-musttail call");
2225 if (!InVarArgsFunc)
2226 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2227 Lex.Lex(); // Lex the '...', it is purely for readability.
2228 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2229 }
2230
2231 // Parse the argument.
2232 LocTy ArgLoc;
2233 Type *ArgTy = nullptr;
2234 AttrBuilder ArgAttrs;
2235 Value *V;
2236 if (ParseType(ArgTy, ArgLoc))
2237 return true;
2238
2239 if (ArgTy->isMetadataTy()) {
2240 if (ParseMetadataAsValue(V, PFS))
2241 return true;
2242 } else {
2243 // Otherwise, handle normal operands.
2244 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2245 return true;
2246 }
2247 ArgList.push_back(ParamInfo(
2248 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2249 }
2250
2251 if (IsMustTailCall && InVarArgsFunc)
2252 return TokError("expected '...' at end of argument list for musttail call "
2253 "in varargs function");
2254
2255 Lex.Lex(); // Lex the ')'.
2256 return false;
2257}
2258
2259/// ParseOptionalOperandBundles
2260/// ::= /*empty*/
2261/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2262///
2263/// OperandBundle
2264/// ::= bundle-tag '(' ')'
2265/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2266///
2267/// bundle-tag ::= String Constant
2268bool LLParser::ParseOptionalOperandBundles(
2269 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2270 LocTy BeginLoc = Lex.getLoc();
2271 if (!EatIfPresent(lltok::lsquare))
2272 return false;
2273
2274 while (Lex.getKind() != lltok::rsquare) {
2275 // If this isn't the first operand bundle, we need a comma.
2276 if (!BundleList.empty() &&
2277 ParseToken(lltok::comma, "expected ',' in input list"))
2278 return true;
2279
2280 std::string Tag;
2281 if (ParseStringConstant(Tag))
2282 return true;
2283
2284 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2285 return true;
2286
2287 std::vector<Value *> Inputs;
2288 while (Lex.getKind() != lltok::rparen) {
2289 // If this isn't the first input, we need a comma.
2290 if (!Inputs.empty() &&
2291 ParseToken(lltok::comma, "expected ',' in input list"))
2292 return true;
2293
2294 Type *Ty = nullptr;
2295 Value *Input = nullptr;
2296 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2297 return true;
2298 Inputs.push_back(Input);
2299 }
2300
2301 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2302
2303 Lex.Lex(); // Lex the ')'.
2304 }
2305
2306 if (BundleList.empty())
2307 return Error(BeginLoc, "operand bundle set must not be empty");
2308
2309 Lex.Lex(); // Lex the ']'.
2310 return false;
2311}
2312
2313/// ParseArgumentList - Parse the argument list for a function type or function
2314/// prototype.
2315/// ::= '(' ArgTypeListI ')'
2316/// ArgTypeListI
2317/// ::= /*empty*/
2318/// ::= '...'
2319/// ::= ArgTypeList ',' '...'
2320/// ::= ArgType (',' ArgType)*
2321///
2322bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2323 bool &isVarArg){
2324 isVarArg = false;
2325 assert(Lex.getKind() == lltok::lparen)((Lex.getKind() == lltok::lparen) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 2325, __PRETTY_FUNCTION__))
;
2326 Lex.Lex(); // eat the (.
2327
2328 if (Lex.getKind() == lltok::rparen) {
2329 // empty
2330 } else if (Lex.getKind() == lltok::dotdotdot) {
2331 isVarArg = true;
2332 Lex.Lex();
2333 } else {
2334 LocTy TypeLoc = Lex.getLoc();
2335 Type *ArgTy = nullptr;
2336 AttrBuilder Attrs;
2337 std::string Name;
2338
2339 if (ParseType(ArgTy) ||
2340 ParseOptionalParamAttrs(Attrs)) return true;
2341
2342 if (ArgTy->isVoidTy())
2343 return Error(TypeLoc, "argument can not have void type");
2344
2345 if (Lex.getKind() == lltok::LocalVar) {
2346 Name = Lex.getStrVal();
2347 Lex.Lex();
2348 }
2349
2350 if (!FunctionType::isValidArgumentType(ArgTy))
2351 return Error(TypeLoc, "invalid type for function argument");
2352
2353 ArgList.emplace_back(TypeLoc, ArgTy,
2354 AttributeSet::get(ArgTy->getContext(), Attrs),
2355 std::move(Name));
2356
2357 while (EatIfPresent(lltok::comma)) {
2358 // Handle ... at end of arg list.
2359 if (EatIfPresent(lltok::dotdotdot)) {
2360 isVarArg = true;
2361 break;
2362 }
2363
2364 // Otherwise must be an argument type.
2365 TypeLoc = Lex.getLoc();
2366 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2367
2368 if (ArgTy->isVoidTy())
2369 return Error(TypeLoc, "argument can not have void type");
2370
2371 if (Lex.getKind() == lltok::LocalVar) {
2372 Name = Lex.getStrVal();
2373 Lex.Lex();
2374 } else {
2375 Name = "";
2376 }
2377
2378 if (!ArgTy->isFirstClassType())
2379 return Error(TypeLoc, "invalid type for function argument");
2380
2381 ArgList.emplace_back(TypeLoc, ArgTy,
2382 AttributeSet::get(ArgTy->getContext(), Attrs),
2383 std::move(Name));
2384 }
2385 }
2386
2387 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2388}
2389
2390/// ParseFunctionType
2391/// ::= Type ArgumentList OptionalAttrs
2392bool LLParser::ParseFunctionType(Type *&Result) {
2393 assert(Lex.getKind() == lltok::lparen)((Lex.getKind() == lltok::lparen) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 2393, __PRETTY_FUNCTION__))
;
2394
2395 if (!FunctionType::isValidReturnType(Result))
2396 return TokError("invalid function return type");
2397
2398 SmallVector<ArgInfo, 8> ArgList;
2399 bool isVarArg;
2400 if (ParseArgumentList(ArgList, isVarArg))
2401 return true;
2402
2403 // Reject names on the arguments lists.
2404 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2405 if (!ArgList[i].Name.empty())
2406 return Error(ArgList[i].Loc, "argument name invalid in function type");
2407 if (ArgList[i].Attrs.hasAttributes())
2408 return Error(ArgList[i].Loc,
2409 "argument attributes invalid in function type");
2410 }
2411
2412 SmallVector<Type*, 16> ArgListTy;
2413 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2414 ArgListTy.push_back(ArgList[i].Ty);
2415
2416 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2417 return false;
2418}
2419
2420/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2421/// other structs.
2422bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2423 SmallVector<Type*, 8> Elts;
2424 if (ParseStructBody(Elts)) return true;
2425
2426 Result = StructType::get(Context, Elts, Packed);
2427 return false;
2428}
2429
2430/// ParseStructDefinition - Parse a struct in a 'type' definition.
2431bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2432 std::pair<Type*, LocTy> &Entry,
2433 Type *&ResultTy) {
2434 // If the type was already defined, diagnose the redefinition.
2435 if (Entry.first && !Entry.second.isValid())
2436 return Error(TypeLoc, "redefinition of type");
2437
2438 // If we have opaque, just return without filling in the definition for the
2439 // struct. This counts as a definition as far as the .ll file goes.
2440 if (EatIfPresent(lltok::kw_opaque)) {
2441 // This type is being defined, so clear the location to indicate this.
2442 Entry.second = SMLoc();
2443
2444 // If this type number has never been uttered, create it.
2445 if (!Entry.first)
2446 Entry.first = StructType::create(Context, Name);
2447 ResultTy = Entry.first;
2448 return false;
2449 }
2450
2451 // If the type starts with '<', then it is either a packed struct or a vector.
2452 bool isPacked = EatIfPresent(lltok::less);
2453
2454 // If we don't have a struct, then we have a random type alias, which we
2455 // accept for compatibility with old files. These types are not allowed to be
2456 // forward referenced and not allowed to be recursive.
2457 if (Lex.getKind() != lltok::lbrace) {
2458 if (Entry.first)
2459 return Error(TypeLoc, "forward references to non-struct type");
2460
2461 ResultTy = nullptr;
2462 if (isPacked)
2463 return ParseArrayVectorType(ResultTy, true);
2464 return ParseType(ResultTy);
2465 }
2466
2467 // This type is being defined, so clear the location to indicate this.
2468 Entry.second = SMLoc();
2469
2470 // If this type number has never been uttered, create it.
2471 if (!Entry.first)
2472 Entry.first = StructType::create(Context, Name);
2473
2474 StructType *STy = cast<StructType>(Entry.first);
2475
2476 SmallVector<Type*, 8> Body;
2477 if (ParseStructBody(Body) ||
2478 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2479 return true;
2480
2481 STy->setBody(Body, isPacked);
2482 ResultTy = STy;
2483 return false;
2484}
2485
2486/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2487/// StructType
2488/// ::= '{' '}'
2489/// ::= '{' Type (',' Type)* '}'
2490/// ::= '<' '{' '}' '>'
2491/// ::= '<' '{' Type (',' Type)* '}' '>'
2492bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2493 assert(Lex.getKind() == lltok::lbrace)((Lex.getKind() == lltok::lbrace) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lbrace", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 2493, __PRETTY_FUNCTION__))
;
2494 Lex.Lex(); // Consume the '{'
2495
2496 // Handle the empty struct.
2497 if (EatIfPresent(lltok::rbrace))
2498 return false;
2499
2500 LocTy EltTyLoc = Lex.getLoc();
2501 Type *Ty = nullptr;
2502 if (ParseType(Ty)) return true;
2503 Body.push_back(Ty);
2504
2505 if (!StructType::isValidElementType(Ty))
2506 return Error(EltTyLoc, "invalid element type for struct");
2507
2508 while (EatIfPresent(lltok::comma)) {
2509 EltTyLoc = Lex.getLoc();
2510 if (ParseType(Ty)) return true;
2511
2512 if (!StructType::isValidElementType(Ty))
2513 return Error(EltTyLoc, "invalid element type for struct");
2514
2515 Body.push_back(Ty);
2516 }
2517
2518 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2519}
2520
2521/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2522/// token has already been consumed.
2523/// Type
2524/// ::= '[' APSINTVAL 'x' Types ']'
2525/// ::= '<' APSINTVAL 'x' Types '>'
2526bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2527 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2528 Lex.getAPSIntVal().getBitWidth() > 64)
2529 return TokError("expected number in address space");
2530
2531 LocTy SizeLoc = Lex.getLoc();
2532 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2533 Lex.Lex();
2534
2535 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2536 return true;
2537
2538 LocTy TypeLoc = Lex.getLoc();
2539 Type *EltTy = nullptr;
2540 if (ParseType(EltTy)) return true;
2541
2542 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2543 "expected end of sequential type"))
2544 return true;
2545
2546 if (isVector) {
2547 if (Size == 0)
2548 return Error(SizeLoc, "zero element vector is illegal");
2549 if ((unsigned)Size != Size)
2550 return Error(SizeLoc, "size too large for vector");
2551 if (!VectorType::isValidElementType(EltTy))
2552 return Error(TypeLoc, "invalid vector element type");
2553 Result = VectorType::get(EltTy, unsigned(Size));
2554 } else {
2555 if (!ArrayType::isValidElementType(EltTy))
2556 return Error(TypeLoc, "invalid array element type");
2557 Result = ArrayType::get(EltTy, Size);
2558 }
2559 return false;
2560}
2561
2562//===----------------------------------------------------------------------===//
2563// Function Semantic Analysis.
2564//===----------------------------------------------------------------------===//
2565
2566LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2567 int functionNumber)
2568 : P(p), F(f), FunctionNumber(functionNumber) {
2569
2570 // Insert unnamed arguments into the NumberedVals list.
2571 for (Argument &A : F.args())
2572 if (!A.hasName())
2573 NumberedVals.push_back(&A);
2574}
2575
2576LLParser::PerFunctionState::~PerFunctionState() {
2577 // If there were any forward referenced non-basicblock values, delete them.
2578
2579 for (const auto &P : ForwardRefVals) {
2580 if (isa<BasicBlock>(P.second.first))
2581 continue;
2582 P.second.first->replaceAllUsesWith(
2583 UndefValue::get(P.second.first->getType()));
2584 P.second.first->deleteValue();
2585 }
2586
2587 for (const auto &P : ForwardRefValIDs) {
2588 if (isa<BasicBlock>(P.second.first))
2589 continue;
2590 P.second.first->replaceAllUsesWith(
2591 UndefValue::get(P.second.first->getType()));
2592 P.second.first->deleteValue();
2593 }
2594}
2595
2596bool LLParser::PerFunctionState::FinishFunction() {
2597 if (!ForwardRefVals.empty())
2598 return P.Error(ForwardRefVals.begin()->second.second,
2599 "use of undefined value '%" + ForwardRefVals.begin()->first +
2600 "'");
2601 if (!ForwardRefValIDs.empty())
2602 return P.Error(ForwardRefValIDs.begin()->second.second,
2603 "use of undefined value '%" +
2604 Twine(ForwardRefValIDs.begin()->first) + "'");
2605 return false;
2606}
2607
2608/// GetVal - Get a value with the specified name or ID, creating a
2609/// forward reference record if needed. This can return null if the value
2610/// exists but does not have the right type.
2611Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2612 LocTy Loc) {
2613 // Look this name up in the normal function symbol table.
2614 Value *Val = F.getValueSymbolTable()->lookup(Name);
2615
2616 // If this is a forward reference for the value, see if we already created a
2617 // forward ref record.
2618 if (!Val) {
2619 auto I = ForwardRefVals.find(Name);
2620 if (I != ForwardRefVals.end())
2621 Val = I->second.first;
2622 }
2623
2624 // If we have the value in the symbol table or fwd-ref table, return it.
2625 if (Val) {
2626 if (Val->getType() == Ty) return Val;
2627 if (Ty->isLabelTy())
2628 P.Error(Loc, "'%" + Name + "' is not a basic block");
2629 else
2630 P.Error(Loc, "'%" + Name + "' defined with type '" +
2631 getTypeString(Val->getType()) + "'");
2632 return nullptr;
2633 }
2634
2635 // Don't make placeholders with invalid type.
2636 if (!Ty->isFirstClassType()) {
2637 P.Error(Loc, "invalid use of a non-first-class type");
2638 return nullptr;
2639 }
2640
2641 // Otherwise, create a new forward reference for this value and remember it.
2642 Value *FwdVal;
2643 if (Ty->isLabelTy()) {
2644 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2645 } else {
2646 FwdVal = new Argument(Ty, Name);
2647 }
2648
2649 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2650 return FwdVal;
2651}
2652
2653Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2654 // Look this name up in the normal function symbol table.
2655 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2656
2657 // If this is a forward reference for the value, see if we already created a
2658 // forward ref record.
2659 if (!Val) {
2660 auto I = ForwardRefValIDs.find(ID);
2661 if (I != ForwardRefValIDs.end())
2662 Val = I->second.first;
2663 }
2664
2665 // If we have the value in the symbol table or fwd-ref table, return it.
2666 if (Val) {
2667 if (Val->getType() == Ty) return Val;
2668 if (Ty->isLabelTy())
2669 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2670 else
2671 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2672 getTypeString(Val->getType()) + "'");
2673 return nullptr;
2674 }
2675
2676 if (!Ty->isFirstClassType()) {
2677 P.Error(Loc, "invalid use of a non-first-class type");
2678 return nullptr;
2679 }
2680
2681 // Otherwise, create a new forward reference for this value and remember it.
2682 Value *FwdVal;
2683 if (Ty->isLabelTy()) {
2684 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2685 } else {
2686 FwdVal = new Argument(Ty);
2687 }
2688
2689 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2690 return FwdVal;
2691}
2692
2693/// SetInstName - After an instruction is parsed and inserted into its
2694/// basic block, this installs its name.
2695bool LLParser::PerFunctionState::SetInstName(int NameID,
2696 const std::string &NameStr,
2697 LocTy NameLoc, Instruction *Inst) {
2698 // If this instruction has void type, it cannot have a name or ID specified.
2699 if (Inst->getType()->isVoidTy()) {
2700 if (NameID != -1 || !NameStr.empty())
2701 return P.Error(NameLoc, "instructions returning void cannot have a name");
2702 return false;
2703 }
2704
2705 // If this was a numbered instruction, verify that the instruction is the
2706 // expected value and resolve any forward references.
2707 if (NameStr.empty()) {
2708 // If neither a name nor an ID was specified, just use the next ID.
2709 if (NameID == -1)
2710 NameID = NumberedVals.size();
2711
2712 if (unsigned(NameID) != NumberedVals.size())
2713 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2714 Twine(NumberedVals.size()) + "'");
2715
2716 auto FI = ForwardRefValIDs.find(NameID);
2717 if (FI != ForwardRefValIDs.end()) {
2718 Value *Sentinel = FI->second.first;
2719 if (Sentinel->getType() != Inst->getType())
2720 return P.Error(NameLoc, "instruction forward referenced with type '" +
2721 getTypeString(FI->second.first->getType()) + "'");
2722
2723 Sentinel->replaceAllUsesWith(Inst);
2724 Sentinel->deleteValue();
2725 ForwardRefValIDs.erase(FI);
2726 }
2727
2728 NumberedVals.push_back(Inst);
2729 return false;
2730 }
2731
2732 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2733 auto FI = ForwardRefVals.find(NameStr);
2734 if (FI != ForwardRefVals.end()) {
2735 Value *Sentinel = FI->second.first;
2736 if (Sentinel->getType() != Inst->getType())
2737 return P.Error(NameLoc, "instruction forward referenced with type '" +
2738 getTypeString(FI->second.first->getType()) + "'");
2739
2740 Sentinel->replaceAllUsesWith(Inst);
2741 Sentinel->deleteValue();
2742 ForwardRefVals.erase(FI);
2743 }
2744
2745 // Set the name on the instruction.
2746 Inst->setName(NameStr);
2747
2748 if (Inst->getName() != NameStr)
2749 return P.Error(NameLoc, "multiple definition of local value named '" +
2750 NameStr + "'");
2751 return false;
2752}
2753
2754/// GetBB - Get a basic block with the specified name or ID, creating a
2755/// forward reference record if needed.
2756BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2757 LocTy Loc) {
2758 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2759 Type::getLabelTy(F.getContext()), Loc));
2760}
2761
2762BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2763 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2764 Type::getLabelTy(F.getContext()), Loc));
2765}
2766
2767/// DefineBB - Define the specified basic block, which is either named or
2768/// unnamed. If there is an error, this returns null otherwise it returns
2769/// the block being defined.
2770BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2771 LocTy Loc) {
2772 BasicBlock *BB;
2773 if (Name.empty())
2774 BB = GetBB(NumberedVals.size(), Loc);
2775 else
2776 BB = GetBB(Name, Loc);
2777 if (!BB) return nullptr; // Already diagnosed error.
2778
2779 // Move the block to the end of the function. Forward ref'd blocks are
2780 // inserted wherever they happen to be referenced.
2781 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2782
2783 // Remove the block from forward ref sets.
2784 if (Name.empty()) {
2785 ForwardRefValIDs.erase(NumberedVals.size());
2786 NumberedVals.push_back(BB);
2787 } else {
2788 // BB forward references are already in the function symbol table.
2789 ForwardRefVals.erase(Name);
2790 }
2791
2792 return BB;
2793}
2794
2795//===----------------------------------------------------------------------===//
2796// Constants.
2797//===----------------------------------------------------------------------===//
2798
2799/// ParseValID - Parse an abstract value that doesn't necessarily have a
2800/// type implied. For example, if we parse "4" we don't know what integer type
2801/// it has. The value will later be combined with its type and checked for
2802/// sanity. PFS is used to convert function-local operands of metadata (since
2803/// metadata operands are not just parsed here but also converted to values).
2804/// PFS can be null when we are not parsing metadata values inside a function.
2805bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2806 ID.Loc = Lex.getLoc();
2807 switch (Lex.getKind()) {
2808 default: return TokError("expected value token");
2809 case lltok::GlobalID: // @42
2810 ID.UIntVal = Lex.getUIntVal();
2811 ID.Kind = ValID::t_GlobalID;
2812 break;
2813 case lltok::GlobalVar: // @foo
2814 ID.StrVal = Lex.getStrVal();
2815 ID.Kind = ValID::t_GlobalName;
2816 break;
2817 case lltok::LocalVarID: // %42
2818 ID.UIntVal = Lex.getUIntVal();
2819 ID.Kind = ValID::t_LocalID;
2820 break;
2821 case lltok::LocalVar: // %foo
2822 ID.StrVal = Lex.getStrVal();
2823 ID.Kind = ValID::t_LocalName;
2824 break;
2825 case lltok::APSInt:
2826 ID.APSIntVal = Lex.getAPSIntVal();
2827 ID.Kind = ValID::t_APSInt;
2828 break;
2829 case lltok::APFloat:
2830 ID.APFloatVal = Lex.getAPFloatVal();
2831 ID.Kind = ValID::t_APFloat;
2832 break;
2833 case lltok::kw_true:
2834 ID.ConstantVal = ConstantInt::getTrue(Context);
2835 ID.Kind = ValID::t_Constant;
2836 break;
2837 case lltok::kw_false:
2838 ID.ConstantVal = ConstantInt::getFalse(Context);
2839 ID.Kind = ValID::t_Constant;
2840 break;
2841 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2842 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2843 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2844 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2845
2846 case lltok::lbrace: {
2847 // ValID ::= '{' ConstVector '}'
2848 Lex.Lex();
2849 SmallVector<Constant*, 16> Elts;
2850 if (ParseGlobalValueVector(Elts) ||
2851 ParseToken(lltok::rbrace, "expected end of struct constant"))
2852 return true;
2853
2854 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2855 ID.UIntVal = Elts.size();
2856 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2857 Elts.size() * sizeof(Elts[0]));
2858 ID.Kind = ValID::t_ConstantStruct;
2859 return false;
2860 }
2861 case lltok::less: {
2862 // ValID ::= '<' ConstVector '>' --> Vector.
2863 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2864 Lex.Lex();
2865 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2866
2867 SmallVector<Constant*, 16> Elts;
2868 LocTy FirstEltLoc = Lex.getLoc();
2869 if (ParseGlobalValueVector(Elts) ||
2870 (isPackedStruct &&
2871 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2872 ParseToken(lltok::greater, "expected end of constant"))
2873 return true;
2874
2875 if (isPackedStruct) {
2876 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2877 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2878 Elts.size() * sizeof(Elts[0]));
2879 ID.UIntVal = Elts.size();
2880 ID.Kind = ValID::t_PackedConstantStruct;
2881 return false;
2882 }
2883
2884 if (Elts.empty())
2885 return Error(ID.Loc, "constant vector must not be empty");
2886
2887 if (!Elts[0]->getType()->isIntegerTy() &&
2888 !Elts[0]->getType()->isFloatingPointTy() &&
2889 !Elts[0]->getType()->isPointerTy())
2890 return Error(FirstEltLoc,
2891 "vector elements must have integer, pointer or floating point type");
2892
2893 // Verify that all the vector elements have the same type.
2894 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2895 if (Elts[i]->getType() != Elts[0]->getType())
2896 return Error(FirstEltLoc,
2897 "vector element #" + Twine(i) +
2898 " is not of type '" + getTypeString(Elts[0]->getType()));
2899
2900 ID.ConstantVal = ConstantVector::get(Elts);
2901 ID.Kind = ValID::t_Constant;
2902 return false;
2903 }
2904 case lltok::lsquare: { // Array Constant
2905 Lex.Lex();
2906 SmallVector<Constant*, 16> Elts;
2907 LocTy FirstEltLoc = Lex.getLoc();
2908 if (ParseGlobalValueVector(Elts) ||
2909 ParseToken(lltok::rsquare, "expected end of array constant"))
2910 return true;
2911
2912 // Handle empty element.
2913 if (Elts.empty()) {
2914 // Use undef instead of an array because it's inconvenient to determine
2915 // the element type at this point, there being no elements to examine.
2916 ID.Kind = ValID::t_EmptyArray;
2917 return false;
2918 }
2919
2920 if (!Elts[0]->getType()->isFirstClassType())
2921 return Error(FirstEltLoc, "invalid array element type: " +
2922 getTypeString(Elts[0]->getType()));
2923
2924 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2925
2926 // Verify all elements are correct type!
2927 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2928 if (Elts[i]->getType() != Elts[0]->getType())
2929 return Error(FirstEltLoc,
2930 "array element #" + Twine(i) +
2931 " is not of type '" + getTypeString(Elts[0]->getType()));
2932 }
2933
2934 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2935 ID.Kind = ValID::t_Constant;
2936 return false;
2937 }
2938 case lltok::kw_c: // c "foo"
2939 Lex.Lex();
2940 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2941 false);
2942 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2943 ID.Kind = ValID::t_Constant;
2944 return false;
2945
2946 case lltok::kw_asm: {
2947 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2948 // STRINGCONSTANT
2949 bool HasSideEffect, AlignStack, AsmDialect;
2950 Lex.Lex();
2951 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2952 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2953 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2954 ParseStringConstant(ID.StrVal) ||
2955 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2956 ParseToken(lltok::StringConstant, "expected constraint string"))
2957 return true;
2958 ID.StrVal2 = Lex.getStrVal();
2959 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2960 (unsigned(AsmDialect)<<2);
2961 ID.Kind = ValID::t_InlineAsm;
2962 return false;
2963 }
2964
2965 case lltok::kw_blockaddress: {
2966 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2967 Lex.Lex();
2968
2969 ValID Fn, Label;
2970
2971 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2972 ParseValID(Fn) ||
2973 ParseToken(lltok::comma, "expected comma in block address expression")||
2974 ParseValID(Label) ||
2975 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2976 return true;
2977
2978 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2979 return Error(Fn.Loc, "expected function name in blockaddress");
2980 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2981 return Error(Label.Loc, "expected basic block name in blockaddress");
2982
2983 // Try to find the function (but skip it if it's forward-referenced).
2984 GlobalValue *GV = nullptr;
2985 if (Fn.Kind == ValID::t_GlobalID) {
2986 if (Fn.UIntVal < NumberedVals.size())
2987 GV = NumberedVals[Fn.UIntVal];
2988 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2989 GV = M->getNamedValue(Fn.StrVal);
2990 }
2991 Function *F = nullptr;
2992 if (GV) {
2993 // Confirm that it's actually a function with a definition.
2994 if (!isa<Function>(GV))
2995 return Error(Fn.Loc, "expected function name in blockaddress");
2996 F = cast<Function>(GV);
2997 if (F->isDeclaration())
2998 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2999 }
3000
3001 if (!F) {
3002 // Make a global variable as a placeholder for this reference.
3003 GlobalValue *&FwdRef =
3004 ForwardRefBlockAddresses.insert(std::make_pair(
3005 std::move(Fn),
3006 std::map<ValID, GlobalValue *>()))
3007 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3008 .first->second;
3009 if (!FwdRef)
3010 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3011 GlobalValue::InternalLinkage, nullptr, "");
3012 ID.ConstantVal = FwdRef;
3013 ID.Kind = ValID::t_Constant;
3014 return false;
3015 }
3016
3017 // We found the function; now find the basic block. Don't use PFS, since we
3018 // might be inside a constant expression.
3019 BasicBlock *BB;
3020 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3021 if (Label.Kind == ValID::t_LocalID)
3022 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3023 else
3024 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3025 if (!BB)
3026 return Error(Label.Loc, "referenced value is not a basic block");
3027 } else {
3028 if (Label.Kind == ValID::t_LocalID)
3029 return Error(Label.Loc, "cannot take address of numeric label after "
3030 "the function is defined");
3031 BB = dyn_cast_or_null<BasicBlock>(
3032 F->getValueSymbolTable()->lookup(Label.StrVal));
3033 if (!BB)
3034 return Error(Label.Loc, "referenced value is not a basic block");
3035 }
3036
3037 ID.ConstantVal = BlockAddress::get(F, BB);
3038 ID.Kind = ValID::t_Constant;
3039 return false;
3040 }
3041
3042 case lltok::kw_trunc:
3043 case lltok::kw_zext:
3044 case lltok::kw_sext:
3045 case lltok::kw_fptrunc:
3046 case lltok::kw_fpext:
3047 case lltok::kw_bitcast:
3048 case lltok::kw_addrspacecast:
3049 case lltok::kw_uitofp:
3050 case lltok::kw_sitofp:
3051 case lltok::kw_fptoui:
3052 case lltok::kw_fptosi:
3053 case lltok::kw_inttoptr:
3054 case lltok::kw_ptrtoint: {
3055 unsigned Opc = Lex.getUIntVal();
3056 Type *DestTy = nullptr;
3057 Constant *SrcVal;
3058 Lex.Lex();
3059 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3060 ParseGlobalTypeAndValue(SrcVal) ||
3061 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3062 ParseType(DestTy) ||
3063 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3064 return true;
3065 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3066 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3067 getTypeString(SrcVal->getType()) + "' to '" +
3068 getTypeString(DestTy) + "'");
3069 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3070 SrcVal, DestTy);
3071 ID.Kind = ValID::t_Constant;
3072 return false;
3073 }
3074 case lltok::kw_extractvalue: {
3075 Lex.Lex();
3076 Constant *Val;
3077 SmallVector<unsigned, 4> Indices;
3078 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3079 ParseGlobalTypeAndValue(Val) ||
3080 ParseIndexList(Indices) ||
3081 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3082 return true;
3083
3084 if (!Val->getType()->isAggregateType())
3085 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3086 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3087 return Error(ID.Loc, "invalid indices for extractvalue");
3088 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3089 ID.Kind = ValID::t_Constant;
3090 return false;
3091 }
3092 case lltok::kw_insertvalue: {
3093 Lex.Lex();
3094 Constant *Val0, *Val1;
3095 SmallVector<unsigned, 4> Indices;
3096 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3097 ParseGlobalTypeAndValue(Val0) ||
3098 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3099 ParseGlobalTypeAndValue(Val1) ||
3100 ParseIndexList(Indices) ||
3101 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3102 return true;
3103 if (!Val0->getType()->isAggregateType())
3104 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3105 Type *IndexedType =
3106 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3107 if (!IndexedType)
3108 return Error(ID.Loc, "invalid indices for insertvalue");
3109 if (IndexedType != Val1->getType())
3110 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3111 getTypeString(Val1->getType()) +
3112 "' instead of '" + getTypeString(IndexedType) +
3113 "'");
3114 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3115 ID.Kind = ValID::t_Constant;
3116 return false;
3117 }
3118 case lltok::kw_icmp:
3119 case lltok::kw_fcmp: {
3120 unsigned PredVal, Opc = Lex.getUIntVal();
3121 Constant *Val0, *Val1;
3122 Lex.Lex();
3123 if (ParseCmpPredicate(PredVal, Opc) ||
3124 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3125 ParseGlobalTypeAndValue(Val0) ||
3126 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3127 ParseGlobalTypeAndValue(Val1) ||
3128 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3129 return true;
3130
3131 if (Val0->getType() != Val1->getType())
3132 return Error(ID.Loc, "compare operands must have the same type");
3133
3134 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3135
3136 if (Opc == Instruction::FCmp) {
3137 if (!Val0->getType()->isFPOrFPVectorTy())
3138 return Error(ID.Loc, "fcmp requires floating point operands");
3139 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3140 } else {
3141 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!")((Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!"
) ? static_cast<void> (0) : __assert_fail ("Opc == Instruction::ICmp && \"Unexpected opcode for CmpInst!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3141, __PRETTY_FUNCTION__))
;
3142 if (!Val0->getType()->isIntOrIntVectorTy() &&
3143 !Val0->getType()->isPtrOrPtrVectorTy())
3144 return Error(ID.Loc, "icmp requires pointer or integer operands");
3145 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3146 }
3147 ID.Kind = ValID::t_Constant;
3148 return false;
3149 }
3150
3151 // Binary Operators.
3152 case lltok::kw_add:
3153 case lltok::kw_fadd:
3154 case lltok::kw_sub:
3155 case lltok::kw_fsub:
3156 case lltok::kw_mul:
3157 case lltok::kw_fmul:
3158 case lltok::kw_udiv:
3159 case lltok::kw_sdiv:
3160 case lltok::kw_fdiv:
3161 case lltok::kw_urem:
3162 case lltok::kw_srem:
3163 case lltok::kw_frem:
3164 case lltok::kw_shl:
3165 case lltok::kw_lshr:
3166 case lltok::kw_ashr: {
3167 bool NUW = false;
3168 bool NSW = false;
3169 bool Exact = false;
3170 unsigned Opc = Lex.getUIntVal();
3171 Constant *Val0, *Val1;
3172 Lex.Lex();
3173 LocTy ModifierLoc = Lex.getLoc();
3174 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3175 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3176 if (EatIfPresent(lltok::kw_nuw))
3177 NUW = true;
3178 if (EatIfPresent(lltok::kw_nsw)) {
3179 NSW = true;
3180 if (EatIfPresent(lltok::kw_nuw))
3181 NUW = true;
3182 }
3183 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3184 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3185 if (EatIfPresent(lltok::kw_exact))
3186 Exact = true;
3187 }
3188 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3189 ParseGlobalTypeAndValue(Val0) ||
3190 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3191 ParseGlobalTypeAndValue(Val1) ||
3192 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3193 return true;
3194 if (Val0->getType() != Val1->getType())
3195 return Error(ID.Loc, "operands of constexpr must have same type");
3196 if (!Val0->getType()->isIntOrIntVectorTy()) {
3197 if (NUW)
3198 return Error(ModifierLoc, "nuw only applies to integer operations");
3199 if (NSW)
3200 return Error(ModifierLoc, "nsw only applies to integer operations");
3201 }
3202 // Check that the type is valid for the operator.
3203 switch (Opc) {
3204 case Instruction::Add:
3205 case Instruction::Sub:
3206 case Instruction::Mul:
3207 case Instruction::UDiv:
3208 case Instruction::SDiv:
3209 case Instruction::URem:
3210 case Instruction::SRem:
3211 case Instruction::Shl:
3212 case Instruction::AShr:
3213 case Instruction::LShr:
3214 if (!Val0->getType()->isIntOrIntVectorTy())
3215 return Error(ID.Loc, "constexpr requires integer operands");
3216 break;
3217 case Instruction::FAdd:
3218 case Instruction::FSub:
3219 case Instruction::FMul:
3220 case Instruction::FDiv:
3221 case Instruction::FRem:
3222 if (!Val0->getType()->isFPOrFPVectorTy())
3223 return Error(ID.Loc, "constexpr requires fp operands");
3224 break;
3225 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3225)
;
3226 }
3227 unsigned Flags = 0;
3228 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3229 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3230 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3231 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3232 ID.ConstantVal = C;
3233 ID.Kind = ValID::t_Constant;
3234 return false;
3235 }
3236
3237 // Logical Operations
3238 case lltok::kw_and:
3239 case lltok::kw_or:
3240 case lltok::kw_xor: {
3241 unsigned Opc = Lex.getUIntVal();
3242 Constant *Val0, *Val1;
3243 Lex.Lex();
3244 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3245 ParseGlobalTypeAndValue(Val0) ||
3246 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3247 ParseGlobalTypeAndValue(Val1) ||
3248 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3249 return true;
3250 if (Val0->getType() != Val1->getType())
3251 return Error(ID.Loc, "operands of constexpr must have same type");
3252 if (!Val0->getType()->isIntOrIntVectorTy())
3253 return Error(ID.Loc,
3254 "constexpr requires integer or integer vector operands");
3255 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3256 ID.Kind = ValID::t_Constant;
3257 return false;
3258 }
3259
3260 case lltok::kw_getelementptr:
3261 case lltok::kw_shufflevector:
3262 case lltok::kw_insertelement:
3263 case lltok::kw_extractelement:
3264 case lltok::kw_select: {
3265 unsigned Opc = Lex.getUIntVal();
3266 SmallVector<Constant*, 16> Elts;
3267 bool InBounds = false;
3268 Type *Ty;
3269 Lex.Lex();
3270
3271 if (Opc == Instruction::GetElementPtr)
3272 InBounds = EatIfPresent(lltok::kw_inbounds);
3273
3274 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3275 return true;
3276
3277 LocTy ExplicitTypeLoc = Lex.getLoc();
3278 if (Opc == Instruction::GetElementPtr) {
3279 if (ParseType(Ty) ||
3280 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3281 return true;
3282 }
3283
3284 Optional<unsigned> InRangeOp;
3285 if (ParseGlobalValueVector(
3286 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3287 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3288 return true;
3289
3290 if (Opc == Instruction::GetElementPtr) {
3291 if (Elts.size() == 0 ||
3292 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3293 return Error(ID.Loc, "base of getelementptr must be a pointer");
3294
3295 Type *BaseType = Elts[0]->getType();
3296 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3297 if (Ty != BasePointerType->getElementType())
3298 return Error(
3299 ExplicitTypeLoc,
3300 "explicit pointee type doesn't match operand's pointee type");
3301
3302 unsigned GEPWidth =
3303 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3304
3305 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3306 for (Constant *Val : Indices) {
3307 Type *ValTy = Val->getType();
3308 if (!ValTy->isIntOrIntVectorTy())
3309 return Error(ID.Loc, "getelementptr index must be an integer");
3310 if (ValTy->isVectorTy()) {
3311 unsigned ValNumEl = ValTy->getVectorNumElements();
3312 if (GEPWidth && (ValNumEl != GEPWidth))
3313 return Error(
3314 ID.Loc,
3315 "getelementptr vector index has a wrong number of elements");
3316 // GEPWidth may have been unknown because the base is a scalar,
3317 // but it is known now.
3318 GEPWidth = ValNumEl;
3319 }
3320 }
3321
3322 SmallPtrSet<Type*, 4> Visited;
3323 if (!Indices.empty() && !Ty->isSized(&Visited))
3324 return Error(ID.Loc, "base element of getelementptr must be sized");
3325
3326 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3327 return Error(ID.Loc, "invalid getelementptr indices");
3328
3329 if (InRangeOp) {
3330 if (*InRangeOp == 0)
3331 return Error(ID.Loc,
3332 "inrange keyword may not appear on pointer operand");
3333 --*InRangeOp;
3334 }
3335
3336 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3337 InBounds, InRangeOp);
3338 } else if (Opc == Instruction::Select) {
3339 if (Elts.size() != 3)
3340 return Error(ID.Loc, "expected three operands to select");
3341 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3342 Elts[2]))
3343 return Error(ID.Loc, Reason);
3344 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3345 } else if (Opc == Instruction::ShuffleVector) {
3346 if (Elts.size() != 3)
3347 return Error(ID.Loc, "expected three operands to shufflevector");
3348 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3349 return Error(ID.Loc, "invalid operands to shufflevector");
3350 ID.ConstantVal =
3351 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3352 } else if (Opc == Instruction::ExtractElement) {
3353 if (Elts.size() != 2)
3354 return Error(ID.Loc, "expected two operands to extractelement");
3355 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3356 return Error(ID.Loc, "invalid extractelement operands");
3357 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3358 } else {
3359 assert(Opc == Instruction::InsertElement && "Unknown opcode")((Opc == Instruction::InsertElement && "Unknown opcode"
) ? static_cast<void> (0) : __assert_fail ("Opc == Instruction::InsertElement && \"Unknown opcode\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3359, __PRETTY_FUNCTION__))
;
3360 if (Elts.size() != 3)
3361 return Error(ID.Loc, "expected three operands to insertelement");
3362 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3363 return Error(ID.Loc, "invalid insertelement operands");
3364 ID.ConstantVal =
3365 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3366 }
3367
3368 ID.Kind = ValID::t_Constant;
3369 return false;
3370 }
3371 }
3372
3373 Lex.Lex();
3374 return false;
3375}
3376
3377/// ParseGlobalValue - Parse a global value with the specified type.
3378bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3379 C = nullptr;
3380 ValID ID;
3381 Value *V = nullptr;
3382 bool Parsed = ParseValID(ID) ||
3383 ConvertValIDToValue(Ty, ID, V, nullptr);
3384 if (V && !(C = dyn_cast<Constant>(V)))
3385 return Error(ID.Loc, "global values must be constants");
3386 return Parsed;
3387}
3388
3389bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3390 Type *Ty = nullptr;
3391 return ParseType(Ty) ||
3392 ParseGlobalValue(Ty, V);
3393}
3394
3395bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3396 C = nullptr;
3397
3398 LocTy KwLoc = Lex.getLoc();
3399 if (!EatIfPresent(lltok::kw_comdat))
3400 return false;
3401
3402 if (EatIfPresent(lltok::lparen)) {
3403 if (Lex.getKind() != lltok::ComdatVar)
3404 return TokError("expected comdat variable");
3405 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3406 Lex.Lex();
3407 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3408 return true;
3409 } else {
3410 if (GlobalName.empty())
3411 return TokError("comdat cannot be unnamed");
3412 C = getComdat(GlobalName, KwLoc);
3413 }
3414
3415 return false;
3416}
3417
3418/// ParseGlobalValueVector
3419/// ::= /*empty*/
3420/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3421bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3422 Optional<unsigned> *InRangeOp) {
3423 // Empty list.
3424 if (Lex.getKind() == lltok::rbrace ||
3425 Lex.getKind() == lltok::rsquare ||
3426 Lex.getKind() == lltok::greater ||
3427 Lex.getKind() == lltok::rparen)
3428 return false;
3429
3430 do {
3431 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3432 *InRangeOp = Elts.size();
3433
3434 Constant *C;
3435 if (ParseGlobalTypeAndValue(C)) return true;
3436 Elts.push_back(C);
3437 } while (EatIfPresent(lltok::comma));
3438
3439 return false;
3440}
3441
3442bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3443 SmallVector<Metadata *, 16> Elts;
3444 if (ParseMDNodeVector(Elts))
3445 return true;
3446
3447 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3448 return false;
3449}
3450
3451/// MDNode:
3452/// ::= !{ ... }
3453/// ::= !7
3454/// ::= !DILocation(...)
3455bool LLParser::ParseMDNode(MDNode *&N) {
3456 if (Lex.getKind() == lltok::MetadataVar)
3457 return ParseSpecializedMDNode(N);
3458
3459 return ParseToken(lltok::exclaim, "expected '!' here") ||
3460 ParseMDNodeTail(N);
3461}
3462
3463bool LLParser::ParseMDNodeTail(MDNode *&N) {
3464 // !{ ... }
3465 if (Lex.getKind() == lltok::lbrace)
3466 return ParseMDTuple(N);
3467
3468 // !42
3469 return ParseMDNodeID(N);
3470}
3471
3472namespace {
3473
3474/// Structure to represent an optional metadata field.
3475template <class FieldTy> struct MDFieldImpl {
3476 typedef MDFieldImpl ImplTy;
3477 FieldTy Val;
3478 bool Seen;
3479
3480 void assign(FieldTy Val) {
3481 Seen = true;
3482 this->Val = std::move(Val);
3483 }
3484
3485 explicit MDFieldImpl(FieldTy Default)
3486 : Val(std::move(Default)), Seen(false) {}
3487};
3488
3489struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3490 uint64_t Max;
3491
3492 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3493 : ImplTy(Default), Max(Max) {}
3494};
3495
3496struct LineField : public MDUnsignedField {
3497 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3498};
3499
3500struct ColumnField : public MDUnsignedField {
3501 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3502};
3503
3504struct DwarfTagField : public MDUnsignedField {
3505 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3506 DwarfTagField(dwarf::Tag DefaultTag)
3507 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3508};
3509
3510struct DwarfMacinfoTypeField : public MDUnsignedField {
3511 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3512 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3513 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3514};
3515
3516struct DwarfAttEncodingField : public MDUnsignedField {
3517 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3518};
3519
3520struct DwarfVirtualityField : public MDUnsignedField {
3521 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3522};
3523
3524struct DwarfLangField : public MDUnsignedField {
3525 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3526};
3527
3528struct DwarfCCField : public MDUnsignedField {
3529 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3530};
3531
3532struct EmissionKindField : public MDUnsignedField {
3533 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3534};
3535
3536struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3537 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3538};
3539
3540struct MDSignedField : public MDFieldImpl<int64_t> {
3541 int64_t Min;
3542 int64_t Max;
3543
3544 MDSignedField(int64_t Default = 0)
3545 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3546 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3547 : ImplTy(Default), Min(Min), Max(Max) {}
3548};
3549
3550struct MDBoolField : public MDFieldImpl<bool> {
3551 MDBoolField(bool Default = false) : ImplTy(Default) {}
3552};
3553
3554struct MDField : public MDFieldImpl<Metadata *> {
3555 bool AllowNull;
3556
3557 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3558};
3559
3560struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3561 MDConstant() : ImplTy(nullptr) {}
3562};
3563
3564struct MDStringField : public MDFieldImpl<MDString *> {
3565 bool AllowEmpty;
3566 MDStringField(bool AllowEmpty = true)
3567 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3568};
3569
3570struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3571 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3572};
3573
3574struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3575 ChecksumKindField() : ImplTy(DIFile::CSK_None) {}
3576 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3577};
3578
3579} // end anonymous namespace
3580
3581namespace llvm {
3582
3583template <>
3584bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3585 MDUnsignedField &Result) {
3586 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3587 return TokError("expected unsigned integer");
3588
3589 auto &U = Lex.getAPSIntVal();
3590 if (U.ugt(Result.Max))
3591 return TokError("value for '" + Name + "' too large, limit is " +
3592 Twine(Result.Max));
3593 Result.assign(U.getZExtValue());
3594 assert(Result.Val <= Result.Max && "Expected value in range")((Result.Val <= Result.Max && "Expected value in range"
) ? static_cast<void> (0) : __assert_fail ("Result.Val <= Result.Max && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3594, __PRETTY_FUNCTION__))
;
3595 Lex.Lex();
3596 return false;
3597}
3598
3599template <>
3600bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3601 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3602}
3603template <>
3604bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3605 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3606}
3607
3608template <>
3609bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3610 if (Lex.getKind() == lltok::APSInt)
3611 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3612
3613 if (Lex.getKind() != lltok::DwarfTag)
3614 return TokError("expected DWARF tag");
3615
3616 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3617 if (Tag == dwarf::DW_TAG_invalid)
3618 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3619 assert(Tag <= Result.Max && "Expected valid DWARF tag")((Tag <= Result.Max && "Expected valid DWARF tag")
? static_cast<void> (0) : __assert_fail ("Tag <= Result.Max && \"Expected valid DWARF tag\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3619, __PRETTY_FUNCTION__))
;
3620
3621 Result.assign(Tag);
3622 Lex.Lex();
3623 return false;
3624}
3625
3626template <>
3627bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3628 DwarfMacinfoTypeField &Result) {
3629 if (Lex.getKind() == lltok::APSInt)
3630 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3631
3632 if (Lex.getKind() != lltok::DwarfMacinfo)
3633 return TokError("expected DWARF macinfo type");
3634
3635 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3636 if (Macinfo == dwarf::DW_MACINFO_invalid)
3637 return TokError(
3638 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3639 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type")((Macinfo <= Result.Max && "Expected valid DWARF macinfo type"
) ? static_cast<void> (0) : __assert_fail ("Macinfo <= Result.Max && \"Expected valid DWARF macinfo type\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3639, __PRETTY_FUNCTION__))
;
3640
3641 Result.assign(Macinfo);
3642 Lex.Lex();
3643 return false;
3644}
3645
3646template <>
3647bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3648 DwarfVirtualityField &Result) {
3649 if (Lex.getKind() == lltok::APSInt)
3650 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3651
3652 if (Lex.getKind() != lltok::DwarfVirtuality)
3653 return TokError("expected DWARF virtuality code");
3654
3655 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3656 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3657 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3658 Lex.getStrVal() + "'");
3659 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code")((Virtuality <= Result.Max && "Expected valid DWARF virtuality code"
) ? static_cast<void> (0) : __assert_fail ("Virtuality <= Result.Max && \"Expected valid DWARF virtuality code\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3659, __PRETTY_FUNCTION__))
;
3660 Result.assign(Virtuality);
3661 Lex.Lex();
3662 return false;
3663}
3664
3665template <>
3666bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3667 if (Lex.getKind() == lltok::APSInt)
3668 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3669
3670 if (Lex.getKind() != lltok::DwarfLang)
3671 return TokError("expected DWARF language");
3672
3673 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3674 if (!Lang)
3675 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3676 "'");
3677 assert(Lang <= Result.Max && "Expected valid DWARF language")((Lang <= Result.Max && "Expected valid DWARF language"
) ? static_cast<void> (0) : __assert_fail ("Lang <= Result.Max && \"Expected valid DWARF language\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3677, __PRETTY_FUNCTION__))
;
3678 Result.assign(Lang);
3679 Lex.Lex();
3680 return false;
3681}
3682
3683template <>
3684bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3685 if (Lex.getKind() == lltok::APSInt)
3686 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3687
3688 if (Lex.getKind() != lltok::DwarfCC)
3689 return TokError("expected DWARF calling convention");
3690
3691 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3692 if (!CC)
3693 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3694 "'");
3695 assert(CC <= Result.Max && "Expected valid DWARF calling convention")((CC <= Result.Max && "Expected valid DWARF calling convention"
) ? static_cast<void> (0) : __assert_fail ("CC <= Result.Max && \"Expected valid DWARF calling convention\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3695, __PRETTY_FUNCTION__))
;
3696 Result.assign(CC);
3697 Lex.Lex();
3698 return false;
3699}
3700
3701template <>
3702bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3703 if (Lex.getKind() == lltok::APSInt)
3704 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3705
3706 if (Lex.getKind() != lltok::EmissionKind)
3707 return TokError("expected emission kind");
3708
3709 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3710 if (!Kind)
3711 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3712 "'");
3713 assert(*Kind <= Result.Max && "Expected valid emission kind")((*Kind <= Result.Max && "Expected valid emission kind"
) ? static_cast<void> (0) : __assert_fail ("*Kind <= Result.Max && \"Expected valid emission kind\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3713, __PRETTY_FUNCTION__))
;
3714 Result.assign(*Kind);
3715 Lex.Lex();
3716 return false;
3717}
3718
3719template <>
3720bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3721 DwarfAttEncodingField &Result) {
3722 if (Lex.getKind() == lltok::APSInt)
3723 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3724
3725 if (Lex.getKind() != lltok::DwarfAttEncoding)
3726 return TokError("expected DWARF type attribute encoding");
3727
3728 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3729 if (!Encoding)
3730 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3731 Lex.getStrVal() + "'");
3732 assert(Encoding <= Result.Max && "Expected valid DWARF language")((Encoding <= Result.Max && "Expected valid DWARF language"
) ? static_cast<void> (0) : __assert_fail ("Encoding <= Result.Max && \"Expected valid DWARF language\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3732, __PRETTY_FUNCTION__))
;
3733 Result.assign(Encoding);
3734 Lex.Lex();
3735 return false;
3736}
3737
3738/// DIFlagField
3739/// ::= uint32
3740/// ::= DIFlagVector
3741/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3742template <>
3743bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3744
3745 // Parser for a single flag.
3746 auto parseFlag = [&](DINode::DIFlags &Val) {
3747 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
8
Calling 'LLLexer::getKind'
9
Returning from 'LLLexer::getKind'
10
Assuming the condition is true
11
Calling 'LLLexer::getAPSIntVal'
12
Returning from 'LLLexer::getAPSIntVal'
13
Calling 'APSInt::isSigned'
15
Returning from 'APSInt::isSigned'
16
Taking true branch
3748 uint32_t TempVal = static_cast<uint32_t>(Val);
17
Assigned value is garbage or undefined
3749 bool Res = ParseUInt32(TempVal);
3750 Val = static_cast<DINode::DIFlags>(TempVal);
3751 return Res;
3752 }
3753
3754 if (Lex.getKind() != lltok::DIFlag)
3755 return TokError("expected debug info flag");
3756
3757 Val = DINode::getFlag(Lex.getStrVal());
3758 if (!Val)
3759 return TokError(Twine("invalid debug info flag flag '") +
3760 Lex.getStrVal() + "'");
3761 Lex.Lex();
3762 return false;
3763 };
3764
3765 // Parse the flags and combine them together.
3766 DINode::DIFlags Combined = DINode::FlagZero;
3767 do {
3768 DINode::DIFlags Val;
5
'Val' declared without an initial value
3769 if (parseFlag(Val))
6
Passing value via 1st parameter 'Val'
7
Calling 'operator()'
3770 return true;
3771 Combined |= Val;
3772 } while (EatIfPresent(lltok::bar));
3773
3774 Result.assign(Combined);
3775 return false;
3776}
3777
3778template <>
3779bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3780 MDSignedField &Result) {
3781 if (Lex.getKind() != lltok::APSInt)
3782 return TokError("expected signed integer");
3783
3784 auto &S = Lex.getAPSIntVal();
3785 if (S < Result.Min)
3786 return TokError("value for '" + Name + "' too small, limit is " +
3787 Twine(Result.Min));
3788 if (S > Result.Max)
3789 return TokError("value for '" + Name + "' too large, limit is " +
3790 Twine(Result.Max));
3791 Result.assign(S.getExtValue());
3792 assert(Result.Val >= Result.Min && "Expected value in range")((Result.Val >= Result.Min && "Expected value in range"
) ? static_cast<void> (0) : __assert_fail ("Result.Val >= Result.Min && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3792, __PRETTY_FUNCTION__))
;
3793 assert(Result.Val <= Result.Max && "Expected value in range")((Result.Val <= Result.Max && "Expected value in range"
) ? static_cast<void> (0) : __assert_fail ("Result.Val <= Result.Max && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3793, __PRETTY_FUNCTION__))
;
3794 Lex.Lex();
3795 return false;
3796}
3797
3798template <>
3799bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3800 switch (Lex.getKind()) {
3801 default:
3802 return TokError("expected 'true' or 'false'");
3803 case lltok::kw_true:
3804 Result.assign(true);
3805 break;
3806 case lltok::kw_false:
3807 Result.assign(false);
3808 break;
3809 }
3810 Lex.Lex();
3811 return false;
3812}
3813
3814template <>
3815bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3816 if (Lex.getKind() == lltok::kw_null) {
3817 if (!Result.AllowNull)
3818 return TokError("'" + Name + "' cannot be null");
3819 Lex.Lex();
3820 Result.assign(nullptr);
3821 return false;
3822 }
3823
3824 Metadata *MD;
3825 if (ParseMetadata(MD, nullptr))
3826 return true;
3827
3828 Result.assign(MD);
3829 return false;
3830}
3831
3832template <>
3833bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3834 LocTy ValueLoc = Lex.getLoc();
3835 std::string S;
3836 if (ParseStringConstant(S))
3837 return true;
3838
3839 if (!Result.AllowEmpty && S.empty())
3840 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3841
3842 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3843 return false;
3844}
3845
3846template <>
3847bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3848 SmallVector<Metadata *, 4> MDs;
3849 if (ParseMDNodeVector(MDs))
3850 return true;
3851
3852 Result.assign(std::move(MDs));
3853 return false;
3854}
3855
3856template <>
3857bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3858 ChecksumKindField &Result) {
3859 if (Lex.getKind() != lltok::ChecksumKind)
3860 return TokError(
3861 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
3862
3863 DIFile::ChecksumKind CSKind = DIFile::getChecksumKind(Lex.getStrVal());
3864
3865 Result.assign(CSKind);
3866 Lex.Lex();
3867 return false;
3868}
3869
3870} // end namespace llvm
3871
3872template <class ParserTy>
3873bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3874 do {
3875 if (Lex.getKind() != lltok::LabelStr)
3876 return TokError("expected field label here");
3877
3878 if (parseField())
3879 return true;
3880 } while (EatIfPresent(lltok::comma));
3881
3882 return false;
3883}
3884
3885template <class ParserTy>
3886bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3887 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")((Lex.getKind() == lltok::MetadataVar && "Expected metadata type name"
) ? static_cast<void> (0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3887, __PRETTY_FUNCTION__))
;
3888 Lex.Lex();
3889
3890 if (ParseToken(lltok::lparen, "expected '(' here"))
3891 return true;
3892 if (Lex.getKind() != lltok::rparen)
3893 if (ParseMDFieldsImplBody(parseField))
3894 return true;
3895
3896 ClosingLoc = Lex.getLoc();
3897 return ParseToken(lltok::rparen, "expected ')' here");
3898}
3899
3900template <class FieldTy>
3901bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3902 if (Result.Seen)
2
Assuming the condition is false
3
Taking false branch
3903 return TokError("field '" + Name + "' cannot be specified more than once");
3904
3905 LocTy Loc = Lex.getLoc();
3906 Lex.Lex();
3907 return ParseMDField(Loc, Name, Result);
4
Calling 'LLParser::ParseMDField'
3908}
3909
3910bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3911 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")((Lex.getKind() == lltok::MetadataVar && "Expected metadata type name"
) ? static_cast<void> (0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 3911, __PRETTY_FUNCTION__))
;
3912
3913#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3914 if (Lex.getStrVal() == #CLASS) \
3915 return Parse##CLASS(N, IsDistinct);
3916#include "llvm/IR/Metadata.def"
3917
3918 return TokError("expected metadata type");
3919}
3920
3921#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3922#define NOP_FIELD(NAME, TYPE, INIT)
3923#define REQUIRE_FIELD(NAME, TYPE, INIT) \
3924 if (!NAME.Seen) \
3925 return Error(ClosingLoc, "missing required field '" #NAME "'");
3926#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3927 if (Lex.getStrVal() == #NAME) \
3928 return ParseMDField(#NAME, NAME);
3929#define PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
\
3930 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3931 do { \
3932 LocTy ClosingLoc; \
3933 if (ParseMDFieldsImpl([&]() -> bool { \
3934 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3935 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3936 }, ClosingLoc)) \
3937 return true; \
3938 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3939 } while (false)
3940#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
3941 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3942
3943/// ParseDILocationFields:
3944/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3945bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3946#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3947 OPTIONAL(line, LineField, ); \
3948 OPTIONAL(column, ColumnField, ); \
3949 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3950 OPTIONAL(inlinedAt, MDField, );
3951 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
3952#undef VISIT_MD_FIELDS
3953
3954 Result = GET_OR_DISTINCT((IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val) : DILocation::get (Context, line
.Val, column.Val, scope.Val, inlinedAt.Val))
3955 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val))(IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val) : DILocation::get (Context, line
.Val, column.Val, scope.Val, inlinedAt.Val))
;
3956 return false;
3957}
3958
3959/// ParseGenericDINode:
3960/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3961bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3962#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3963 REQUIRED(tag, DwarfTagField, ); \
3964 OPTIONAL(header, MDStringField, ); \
3965 OPTIONAL(operands, MDFieldList, );
3966 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
3967#undef VISIT_MD_FIELDS
3968
3969 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
3970 (Context, tag.Val, header.Val, operands.Val))(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
;
3971 return false;
3972}
3973
3974/// ParseDISubrange:
3975/// ::= !DISubrange(count: 30, lowerBound: 2)
3976bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3977#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3978 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX(9223372036854775807L))); \
3979 OPTIONAL(lowerBound, MDSignedField, );
3980 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
3981#undef VISIT_MD_FIELDS
3982
3983 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.Val, lowerBound
.Val) : DISubrange::get (Context, count.Val, lowerBound.Val))
;
3984 return false;
3985}
3986
3987/// ParseDIEnumerator:
3988/// ::= !DIEnumerator(value: 30, name: "SomeKind")
3989bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3990#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3991 REQUIRED(name, MDStringField, ); \
3992 REQUIRED(value, MDSignedField, );
3993 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
3994#undef VISIT_MD_FIELDS
3995
3996 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val))(IsDistinct ? DIEnumerator::getDistinct (Context, value.Val, name
.Val) : DIEnumerator::get (Context, value.Val, name.Val))
;
3997 return false;
3998}
3999
4000/// ParseDIBasicType:
4001/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
4002bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4003#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4004 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4005 OPTIONAL(name, MDStringField, ); \
4006 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4007 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4008 OPTIONAL(encoding, DwarfAttEncodingField, );
4009 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4010#undef VISIT_MD_FIELDS
4011
4012 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,(IsDistinct ? DIBasicType::getDistinct (Context, tag.Val, name
.Val, size.Val, align.Val, encoding.Val) : DIBasicType::get (
Context, tag.Val, name.Val, size.Val, align.Val, encoding.Val
))
4013 align.Val, encoding.Val))(IsDistinct ? DIBasicType::getDistinct (Context, tag.Val, name
.Val, size.Val, align.Val, encoding.Val) : DIBasicType::get (
Context, tag.Val, name.Val, size.Val, align.Val, encoding.Val
))
;
4014 return false;
4015}
4016
4017/// ParseDIDerivedType:
4018/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4019/// line: 7, scope: !1, baseType: !2, size: 32,
4020/// align: 32, offset: 0, flags: 0, extraData: !3,
4021/// dwarfAddressSpace: 3)
4022bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4023#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4024 REQUIRED(tag, DwarfTagField, ); \
4025 OPTIONAL(name, MDStringField, ); \
4026 OPTIONAL(file, MDField, ); \
4027 OPTIONAL(line, LineField, ); \
4028 OPTIONAL(scope, MDField, ); \
4029 REQUIRED(baseType, MDField, ); \
4030 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4031 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4032 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4033 OPTIONAL(flags, DIFlagField, ); \
4034 OPTIONAL(extraData, MDField, ); \
4035 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
4036 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4037#undef VISIT_MD_FIELDS
4038
4039 Optional<unsigned> DWARFAddressSpace;
4040 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4041 DWARFAddressSpace = dwarfAddressSpace.Val;
4042
4043 Result = GET_OR_DISTINCT(DIDerivedType,(IsDistinct ? DIDerivedType::getDistinct (Context, tag.Val, name
.Val, file.Val, line.Val, scope.Val, baseType.Val, size.Val, align
.Val, offset.Val, DWARFAddressSpace, flags.Val, extraData.Val
) : DIDerivedType::get (Context, tag.Val, name.Val, file.Val,
line.Val, scope.Val, baseType.Val, size.Val, align.Val, offset
.Val, DWARFAddressSpace, flags.Val, extraData.Val))
4044 (Context, tag.Val, name.Val, file.Val, line.Val,(IsDistinct ? DIDerivedType::getDistinct (Context, tag.Val, name
.Val, file.Val, line.Val, scope.Val, baseType.Val, size.Val, align
.Val, offset.Val, DWARFAddressSpace, flags.Val, extraData.Val
) : DIDerivedType::get (Context, tag.Val, name.Val, file.Val,
line.Val, scope.Val, baseType.Val, size.Val, align.Val, offset
.Val, DWARFAddressSpace, flags.Val, extraData.Val))
4045 scope.Val, baseType.Val, size.Val, align.Val,(IsDistinct ? DIDerivedType::getDistinct (Context, tag.Val, name
.Val, file.Val, line.Val, scope.Val, baseType.Val, size.Val, align
.Val, offset.Val, DWARFAddressSpace, flags.Val, extraData.Val
) : DIDerivedType::get (Context, tag.Val, name.Val, file.Val,
line.Val, scope.Val, baseType.Val, size.Val, align.Val, offset
.Val, DWARFAddressSpace, flags.Val, extraData.Val))
4046 offset.Val, DWARFAddressSpace, flags.Val,(IsDistinct ? DIDerivedType::getDistinct (Context, tag.Val, name
.Val, file.Val, line.Val, scope.Val, baseType.Val, size.Val, align
.Val, offset.Val, DWARFAddressSpace, flags.Val, extraData.Val
) : DIDerivedType::get (Context, tag.Val, name.Val, file.Val,
line.Val, scope.Val, baseType.Val, size.Val, align.Val, offset
.Val, DWARFAddressSpace, flags.Val, extraData.Val))
4047 extraData.Val))(IsDistinct ? DIDerivedType::getDistinct (Context, tag.Val, name
.Val, file.Val, line.Val, scope.Val, baseType.Val, size.Val, align
.Val, offset.Val, DWARFAddressSpace, flags.Val, extraData.Val
) : DIDerivedType::get (Context, tag.Val, name.Val, file.Val,
line.Val, scope.Val, baseType.Val, size.Val, align.Val, offset
.Val, DWARFAddressSpace, flags.Val, extraData.Val))
;
4048 return false;
4049}
4050
4051bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4052#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4053 REQUIRED(tag, DwarfTagField, ); \
4054 OPTIONAL(name, MDStringField, ); \
4055 OPTIONAL(file, MDField, ); \
4056 OPTIONAL(line, LineField, ); \
4057 OPTIONAL(scope, MDField, ); \
4058 OPTIONAL(baseType, MDField, ); \
4059 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4060 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4061 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4062 OPTIONAL(flags, DIFlagField, ); \
4063 OPTIONAL(elements, MDField, ); \
4064 OPTIONAL(runtimeLang, DwarfLangField, ); \
4065 OPTIONAL(vtableHolder, MDField, ); \
4066 OPTIONAL(templateParams, MDField, ); \
4067 OPTIONAL(identifier, MDStringField, );
4068 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4069#undef VISIT_MD_FIELDS
4070
4071 // If this has an identifier try to build an ODR type.
4072 if (identifier.Val)
4073 if (auto *CT = DICompositeType::buildODRType(
4074 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4075 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4076 elements.Val, runtimeLang.Val, vtableHolder.Val,
4077 templateParams.Val)) {
4078 Result = CT;
4079 return false;
4080 }
4081
4082 // Create a new node, and save it in the context if it belongs in the type
4083 // map.
4084 Result = GET_OR_DISTINCT((IsDistinct ? DICompositeType::getDistinct (Context, tag.Val,
name.Val, file.Val, line.Val, scope.Val, baseType.Val, size.
Val, align.Val, offset.Val, flags.Val, elements.Val, runtimeLang
.Val, vtableHolder.Val, templateParams.Val, identifier.Val) :
DICompositeType::get (Context, tag.Val, name.Val, file.Val, line
.Val, scope.Val, baseType.Val, size.Val, align.Val, offset.Val
, flags.Val, elements.Val, runtimeLang.Val, vtableHolder.Val,
templateParams.Val, identifier.Val))
4085 DICompositeType,(IsDistinct ? DICompositeType::getDistinct (Context, tag.Val,
name.Val, file.Val, line.Val, scope.Val, baseType.Val, size.
Val, align.Val, offset.Val, flags.Val, elements.Val, runtimeLang
.Val, vtableHolder.Val, templateParams.Val, identifier.Val) :
DICompositeType::get (Context, tag.Val, name.Val, file.Val, line
.Val, scope.Val, baseType.Val, size.Val, align.Val, offset.Val
, flags.Val, elements.Val, runtimeLang.Val, vtableHolder.Val,
templateParams.Val, identifier.Val))
4086 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,(IsDistinct ? DICompositeType::getDistinct (Context, tag.Val,
name.Val, file.Val, line.Val, scope.Val, baseType.Val, size.
Val, align.Val, offset.Val, flags.Val, elements.Val, runtimeLang
.Val, vtableHolder.Val, templateParams.Val, identifier.Val) :
DICompositeType::get (Context, tag.Val, name.Val, file.Val, line
.Val, scope.Val, baseType.Val, size.Val, align.Val, offset.Val
, flags.Val, elements.Val, runtimeLang.Val, vtableHolder.Val,
templateParams.Val, identifier.Val))
4087 size.Val, align.Val, offset.Val, flags.Val, elements.Val,(IsDistinct ? DICompositeType::getDistinct (Context, tag.Val,
name.Val, file.Val, line.Val, scope.Val, baseType.Val, size.
Val, align.Val, offset.Val, flags.Val, elements.Val, runtimeLang
.Val, vtableHolder.Val, templateParams.Val, identifier.Val) :
DICompositeType::get (Context, tag.Val, name.Val, file.Val, line
.Val, scope.Val, baseType.Val, size.Val, align.Val, offset.Val
, flags.Val, elements.Val, runtimeLang.Val, vtableHolder.Val,
templateParams.Val, identifier.Val))
4088 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val))(IsDistinct ? DICompositeType::getDistinct (Context, tag.Val,
name.Val, file.Val, line.Val, scope.Val, baseType.Val, size.
Val, align.Val, offset.Val, flags.Val, elements.Val, runtimeLang
.Val, vtableHolder.Val, templateParams.Val, identifier.Val) :
DICompositeType::get (Context, tag.Val, name.Val, file.Val, line
.Val, scope.Val, baseType.Val, size.Val, align.Val, offset.Val
, flags.Val, elements.Val, runtimeLang.Val, vtableHolder.Val,
templateParams.Val, identifier.Val))
;
4089 return false;
4090}
4091
4092bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4093#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4094 OPTIONAL(flags, DIFlagField, ); \
4095 OPTIONAL(cc, DwarfCCField, ); \
4096 REQUIRED(types, MDField, );
4097 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4098#undef VISIT_MD_FIELDS
4099
4100 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4101 (Context, flags.Val, cc.Val, types.Val))(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
;
4102 return false;
4103}
4104
4105/// ParseDIFileType:
4106/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir"
4107/// checksumkind: CSK_MD5,
4108/// checksum: "000102030405060708090a0b0c0d0e0f")
4109bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4110#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4111 REQUIRED(filename, MDStringField, ); \
4112 REQUIRED(directory, MDStringField, ); \
4113 OPTIONAL(checksumkind, ChecksumKindField, ); \
4114 OPTIONAL(checksum, MDStringField, );
4115 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4116#undef VISIT_MD_FIELDS
4117
4118 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val,(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, checksumkind.Val, checksum.Val) : DIFile::get (Context,
filename.Val, directory.Val, checksumkind.Val, checksum.Val)
)
4119 checksumkind.Val, checksum.Val))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, checksumkind.Val, checksum.Val) : DIFile::get (Context,
filename.Val, directory.Val, checksumkind.Val, checksum.Val)
)
;
4120 return false;
4121}
4122
4123/// ParseDICompileUnit:
4124/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4125/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4126/// splitDebugFilename: "abc.debug",
4127/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4128/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4129bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4130 if (!IsDistinct)
4131 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4132
4133#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4134 REQUIRED(language, DwarfLangField, ); \
4135 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4136 OPTIONAL(producer, MDStringField, ); \
4137 OPTIONAL(isOptimized, MDBoolField, ); \
4138 OPTIONAL(flags, MDStringField, ); \
4139 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4140 OPTIONAL(splitDebugFilename, MDStringField, ); \
4141 OPTIONAL(emissionKind, EmissionKindField, ); \
4142 OPTIONAL(enums, MDField, ); \
4143 OPTIONAL(retainedTypes, MDField, ); \
4144 OPTIONAL(globals, MDField, ); \
4145 OPTIONAL(imports, MDField, ); \
4146 OPTIONAL(macros, MDField, ); \
4147 OPTIONAL(dwoId, MDUnsignedField, ); \
4148 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4149 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4150 OPTIONAL(gnuPubnames, MDBoolField, = false);
4151 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4152#undef VISIT_MD_FIELDS
4153
4154 Result = DICompileUnit::getDistinct(
4155 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4156 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4157 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4158 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4159 return false;
4160}
4161
4162/// ParseDISubprogram:
4163/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4164/// file: !1, line: 7, type: !2, isLocal: false,
4165/// isDefinition: true, scopeLine: 8, containingType: !3,
4166/// virtuality: DW_VIRTUALTIY_pure_virtual,
4167/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4168/// isOptimized: false, templateParams: !4, declaration: !5,
4169/// variables: !6, thrownTypes: !7)
4170bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4171 auto Loc = Lex.getLoc();
4172#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4173 OPTIONAL(scope, MDField, ); \
4174 OPTIONAL(name, MDStringField, ); \
4175 OPTIONAL(linkageName, MDStringField, ); \
4176 OPTIONAL(file, MDField, ); \
4177 OPTIONAL(line, LineField, ); \
4178 OPTIONAL(type, MDField, ); \
4179 OPTIONAL(isLocal, MDBoolField, ); \
4180 OPTIONAL(isDefinition, MDBoolField, (true)); \
4181 OPTIONAL(scopeLine, LineField, ); \
4182 OPTIONAL(containingType, MDField, ); \
4183 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4184 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4185 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4186 OPTIONAL(flags, DIFlagField, ); \
4187 OPTIONAL(isOptimized, MDBoolField, ); \
4188 OPTIONAL(unit, MDField, ); \
4189 OPTIONAL(templateParams, MDField, ); \
4190 OPTIONAL(declaration, MDField, ); \
4191 OPTIONAL(variables, MDField, ); \
4192 OPTIONAL(thrownTypes, MDField, );
4193 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4194#undef VISIT_MD_FIELDS
4195
4196 if (isDefinition.Val && !IsDistinct)
4197 return Lex.Error(
4198 Loc,
4199 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4200
4201 Result = GET_OR_DISTINCT((IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4202 DISubprogram,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4203 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4204 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4205 containingType.Val, virtuality.Val, virtualIndex.Val, thisAdjustment.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4206 flags.Val, isOptimized.Val, unit.Val, templateParams.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4207 declaration.Val, variables.Val, thrownTypes.Val))(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
;
4208 return false;
4209}
4210
4211/// ParseDILexicalBlock:
4212/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4213bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4214#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4215 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4216 OPTIONAL(file, MDField, ); \
4217 OPTIONAL(line, LineField, ); \
4218 OPTIONAL(column, ColumnField, );
4219 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4220#undef VISIT_MD_FIELDS
4221
4222 Result = GET_OR_DISTINCT((IsDistinct ? DILexicalBlock::getDistinct (Context, scope.Val
, file.Val, line.Val, column.Val) : DILexicalBlock::get (Context
, scope.Val, file.Val, line.Val, column.Val))
4223 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val))(IsDistinct ? DILexicalBlock::getDistinct (Context, scope.Val
, file.Val, line.Val, column.Val) : DILexicalBlock::get (Context
, scope.Val, file.Val, line.Val, column.Val))
;
4224 return false;
4225}
4226
4227/// ParseDILexicalBlockFile:
4228/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4229bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4230#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4231 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4232 OPTIONAL(file, MDField, ); \
4233 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4234 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4235#undef VISIT_MD_FIELDS
4236
4237 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4238 (Context, scope.Val, file.Val, discriminator.Val))(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
;
4239 return false;
4240}
4241
4242/// ParseDINamespace:
4243/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4244bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4245#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4246 REQUIRED(scope, MDField, ); \
4247 OPTIONAL(name, MDStringField, ); \
4248 OPTIONAL(exportSymbols, MDBoolField, );
4249 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4250#undef VISIT_MD_FIELDS
4251
4252 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4253 (Context, scope.Val, name.Val, exportSymbols.Val))(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
;
4254 return false;
4255}
4256
4257/// ParseDIMacro:
4258/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4259bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4260#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4261 REQUIRED(type, DwarfMacinfoTypeField, ); \
4262 OPTIONAL(line, LineField, ); \
4263 REQUIRED(name, MDStringField, ); \
4264 OPTIONAL(value, MDStringField, );
4265 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4266#undef VISIT_MD_FIELDS
4267
4268 Result = GET_OR_DISTINCT(DIMacro,(IsDistinct ? DIMacro::getDistinct (Context, type.Val, line.Val
, name.Val, value.Val) : DIMacro::get (Context, type.Val, line
.Val, name.Val, value.Val))
4269 (Context, type.Val, line.Val, name.Val, value.Val))(IsDistinct ? DIMacro::getDistinct (Context, type.Val, line.Val
, name.Val, value.Val) : DIMacro::get (Context, type.Val, line
.Val, name.Val, value.Val))
;
4270 return false;
4271}
4272
4273/// ParseDIMacroFile:
4274/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4275bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4276#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4277 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4278 OPTIONAL(line, LineField, ); \
4279 REQUIRED(file, MDField, ); \
4280 OPTIONAL(nodes, MDField, );
4281 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4282#undef VISIT_MD_FIELDS
4283
4284 Result = GET_OR_DISTINCT(DIMacroFile,(IsDistinct ? DIMacroFile::getDistinct (Context, type.Val, line
.Val, file.Val, nodes.Val) : DIMacroFile::get (Context, type.
Val, line.Val, file.Val, nodes.Val))
4285 (Context, type.Val, line.Val, file.Val, nodes.Val))(IsDistinct ? DIMacroFile::getDistinct (Context, type.Val, line
.Val, file.Val, nodes.Val) : DIMacroFile::get (Context, type.
Val, line.Val, file.Val, nodes.Val))
;
4286 return false;
4287}
4288
4289/// ParseDIModule:
4290/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4291/// includePath: "/usr/include", isysroot: "/")
4292bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4293#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4294 REQUIRED(scope, MDField, ); \
4295 REQUIRED(name, MDStringField, ); \
4296 OPTIONAL(configMacros, MDStringField, ); \
4297 OPTIONAL(includePath, MDStringField, ); \
4298 OPTIONAL(isysroot, MDStringField, );
4299 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4300#undef VISIT_MD_FIELDS
4301
4302 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,(IsDistinct ? DIModule::getDistinct (Context, scope.Val, name
.Val, configMacros.Val, includePath.Val, isysroot.Val) : DIModule
::get (Context, scope.Val, name.Val, configMacros.Val, includePath
.Val, isysroot.Val))
4303 configMacros.Val, includePath.Val, isysroot.Val))(IsDistinct ? DIModule::getDistinct (Context, scope.Val, name
.Val, configMacros.Val, includePath.Val, isysroot.Val) : DIModule
::get (Context, scope.Val, name.Val, configMacros.Val, includePath
.Val, isysroot.Val))
;
4304 return false;
4305}
4306
4307/// ParseDITemplateTypeParameter:
4308/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4309bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4310#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4311 OPTIONAL(name, MDStringField, ); \
4312 REQUIRED(type, MDField, );
4313 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4314#undef VISIT_MD_FIELDS
4315
4316 Result =
4317 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4318 return false;
4319}
4320
4321/// ParseDITemplateValueParameter:
4322/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4323/// name: "V", type: !1, value: i32 7)
4324bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4325#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4326 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4327 OPTIONAL(name, MDStringField, ); \
4328 OPTIONAL(type, MDField, ); \
4329 REQUIRED(value, MDField, );
4330 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4331#undef VISIT_MD_FIELDS
4332
4333 Result = GET_OR_DISTINCT(DITemplateValueParameter,(IsDistinct ? DITemplateValueParameter::getDistinct (Context,
tag.Val, name.Val, type.Val, value.Val) : DITemplateValueParameter
::get (Context, tag.Val, name.Val, type.Val, value.Val))
4334 (Context, tag.Val, name.Val, type.Val, value.Val))(IsDistinct ? DITemplateValueParameter::getDistinct (Context,
tag.Val, name.Val, type.Val, value.Val) : DITemplateValueParameter
::get (Context, tag.Val, name.Val, type.Val, value.Val))
;
4335 return false;
4336}
4337
4338/// ParseDIGlobalVariable:
4339/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4340/// file: !1, line: 7, type: !2, isLocal: false,
4341/// isDefinition: true, declaration: !3, align: 8)
4342bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4343#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4344 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4345 OPTIONAL(scope, MDField, ); \
4346 OPTIONAL(linkageName, MDStringField, ); \
4347 OPTIONAL(file, MDField, ); \
4348 OPTIONAL(line, LineField, ); \
4349 OPTIONAL(type, MDField, ); \
4350 OPTIONAL(isLocal, MDBoolField, ); \
4351 OPTIONAL(isDefinition, MDBoolField, (true)); \
4352 OPTIONAL(declaration, MDField, ); \
4353 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4354 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4355#undef VISIT_MD_FIELDS
4356
4357 Result = GET_OR_DISTINCT(DIGlobalVariable,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4358 (Context, scope.Val, name.Val, linkageName.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4359 file.Val, line.Val, type.Val, isLocal.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4360 isDefinition.Val, declaration.Val, align.Val))(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
;
4361 return false;
4362}
4363
4364/// ParseDILocalVariable:
4365/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4366/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4367/// align: 8)
4368/// ::= !DILocalVariable(scope: !0, name: "foo",
4369/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4370/// align: 8)
4371bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4372#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4373 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4374 OPTIONAL(name, MDStringField, ); \
4375 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4376 OPTIONAL(file, MDField, ); \
4377 OPTIONAL(line, LineField, ); \
4378 OPTIONAL(type, MDField, ); \
4379 OPTIONAL(flags, DIFlagField, ); \
4380 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4381 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
1
Within the expansion of the macro 'PARSE_MD_FIELDS':
a
Calling 'LLParser::ParseMDField'
4382#undef VISIT_MD_FIELDS
4383
4384 Result = GET_OR_DISTINCT(DILocalVariable,(IsDistinct ? DILocalVariable::getDistinct (Context, scope.Val
, name.Val, file.Val, line.Val, type.Val, arg.Val, flags.Val,
align.Val) : DILocalVariable::get (Context, scope.Val, name.
Val, file.Val, line.Val, type.Val, arg.Val, flags.Val, align.
Val))
4385 (Context, scope.Val, name.Val, file.Val, line.Val,(IsDistinct ? DILocalVariable::getDistinct (Context, scope.Val
, name.Val, file.Val, line.Val, type.Val, arg.Val, flags.Val,
align.Val) : DILocalVariable::get (Context, scope.Val, name.
Val, file.Val, line.Val, type.Val, arg.Val, flags.Val, align.
Val))
4386 type.Val, arg.Val, flags.Val, align.Val))(IsDistinct ? DILocalVariable::getDistinct (Context, scope.Val
, name.Val, file.Val, line.Val, type.Val, arg.Val, flags.Val,
align.Val) : DILocalVariable::get (Context, scope.Val, name.
Val, file.Val, line.Val, type.Val, arg.Val, flags.Val, align.
Val))
;
4387 return false;
4388}
4389
4390/// ParseDIExpression:
4391/// ::= !DIExpression(0, 7, -1)
4392bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4393 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")((Lex.getKind() == lltok::MetadataVar && "Expected metadata type name"
) ? static_cast<void> (0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4393, __PRETTY_FUNCTION__))
;
4394 Lex.Lex();
4395
4396 if (ParseToken(lltok::lparen, "expected '(' here"))
4397 return true;
4398
4399 SmallVector<uint64_t, 8> Elements;
4400 if (Lex.getKind() != lltok::rparen)
4401 do {
4402 if (Lex.getKind() == lltok::DwarfOp) {
4403 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4404 Lex.Lex();
4405 Elements.push_back(Op);
4406 continue;
4407 }
4408 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4409 }
4410
4411 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4412 return TokError("expected unsigned integer");
4413
4414 auto &U = Lex.getAPSIntVal();
4415 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4416 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4417 Elements.push_back(U.getZExtValue());
4418 Lex.Lex();
4419 } while (EatIfPresent(lltok::comma));
4420
4421 if (ParseToken(lltok::rparen, "expected ')' here"))
4422 return true;
4423
4424 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4425 return false;
4426}
4427
4428/// ParseDIGlobalVariableExpression:
4429/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4430bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4431 bool IsDistinct) {
4432#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4433 REQUIRED(var, MDField, ); \
4434 REQUIRED(expr, MDField, );
4435 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4436#undef VISIT_MD_FIELDS
4437
4438 Result =
4439 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4440 return false;
4441}
4442
4443/// ParseDIObjCProperty:
4444/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4445/// getter: "getFoo", attributes: 7, type: !2)
4446bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4447#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4448 OPTIONAL(name, MDStringField, ); \
4449 OPTIONAL(file, MDField, ); \
4450 OPTIONAL(line, LineField, ); \
4451 OPTIONAL(setter, MDStringField, ); \
4452 OPTIONAL(getter, MDStringField, ); \
4453 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4454 OPTIONAL(type, MDField, );
4455 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4456#undef VISIT_MD_FIELDS
4457
4458 Result = GET_OR_DISTINCT(DIObjCProperty,(IsDistinct ? DIObjCProperty::getDistinct (Context, name.Val,
file.Val, line.Val, setter.Val, getter.Val, attributes.Val, type
.Val) : DIObjCProperty::get (Context, name.Val, file.Val, line
.Val, setter.Val, getter.Val, attributes.Val, type.Val))
4459 (Context, name.Val, file.Val, line.Val, setter.Val,(IsDistinct ? DIObjCProperty::getDistinct (Context, name.Val,
file.Val, line.Val, setter.Val, getter.Val, attributes.Val, type
.Val) : DIObjCProperty::get (Context, name.Val, file.Val, line
.Val, setter.Val, getter.Val, attributes.Val, type.Val))
4460 getter.Val, attributes.Val, type.Val))(IsDistinct ? DIObjCProperty::getDistinct (Context, name.Val,
file.Val, line.Val, setter.Val, getter.Val, attributes.Val, type
.Val) : DIObjCProperty::get (Context, name.Val, file.Val, line
.Val, setter.Val, getter.Val, attributes.Val, type.Val))
;
4461 return false;
4462}
4463
4464/// ParseDIImportedEntity:
4465/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4466/// line: 7, name: "foo")
4467bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4468#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4469 REQUIRED(tag, DwarfTagField, ); \
4470 REQUIRED(scope, MDField, ); \
4471 OPTIONAL(entity, MDField, ); \
4472 OPTIONAL(file, MDField, ); \
4473 OPTIONAL(line, LineField, ); \
4474 OPTIONAL(name, MDStringField, );
4475 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4476#undef VISIT_MD_FIELDS
4477
4478 Result = GET_OR_DISTINCT((IsDistinct ? DIImportedEntity::getDistinct (Context, tag.Val
, scope.Val, entity.Val, file.Val, line.Val, name.Val) : DIImportedEntity
::get (Context, tag.Val, scope.Val, entity.Val, file.Val, line
.Val, name.Val))
4479 DIImportedEntity,(IsDistinct ? DIImportedEntity::getDistinct (Context, tag.Val
, scope.Val, entity.Val, file.Val, line.Val, name.Val) : DIImportedEntity
::get (Context, tag.Val, scope.Val, entity.Val, file.Val, line
.Val, name.Val))
4480 (Context, tag.Val, scope.Val, entity.Val, file.Val, line.Val, name.Val))(IsDistinct ? DIImportedEntity::getDistinct (Context, tag.Val
, scope.Val, entity.Val, file.Val, line.Val, name.Val) : DIImportedEntity
::get (Context, tag.Val, scope.Val, entity.Val, file.Val, line
.Val, name.Val))
;
4481 return false;
4482}
4483
4484#undef PARSE_MD_FIELD
4485#undef NOP_FIELD
4486#undef REQUIRE_FIELD
4487#undef DECLARE_FIELD
4488
4489/// ParseMetadataAsValue
4490/// ::= metadata i32 %local
4491/// ::= metadata i32 @global
4492/// ::= metadata i32 7
4493/// ::= metadata !0
4494/// ::= metadata !{...}
4495/// ::= metadata !"string"
4496bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4497 // Note: the type 'metadata' has already been parsed.
4498 Metadata *MD;
4499 if (ParseMetadata(MD, &PFS))
4500 return true;
4501
4502 V = MetadataAsValue::get(Context, MD);
4503 return false;
4504}
4505
4506/// ParseValueAsMetadata
4507/// ::= i32 %local
4508/// ::= i32 @global
4509/// ::= i32 7
4510bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4511 PerFunctionState *PFS) {
4512 Type *Ty;
4513 LocTy Loc;
4514 if (ParseType(Ty, TypeMsg, Loc))
4515 return true;
4516 if (Ty->isMetadataTy())
4517 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4518
4519 Value *V;
4520 if (ParseValue(Ty, V, PFS))
4521 return true;
4522
4523 MD = ValueAsMetadata::get(V);
4524 return false;
4525}
4526
4527/// ParseMetadata
4528/// ::= i32 %local
4529/// ::= i32 @global
4530/// ::= i32 7
4531/// ::= !42
4532/// ::= !{...}
4533/// ::= !"string"
4534/// ::= !DILocation(...)
4535bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4536 if (Lex.getKind() == lltok::MetadataVar) {
4537 MDNode *N;
4538 if (ParseSpecializedMDNode(N))
4539 return true;
4540 MD = N;
4541 return false;
4542 }
4543
4544 // ValueAsMetadata:
4545 // <type> <value>
4546 if (Lex.getKind() != lltok::exclaim)
4547 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4548
4549 // '!'.
4550 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here")((Lex.getKind() == lltok::exclaim && "Expected '!' here"
) ? static_cast<void> (0) : __assert_fail ("Lex.getKind() == lltok::exclaim && \"Expected '!' here\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4550, __PRETTY_FUNCTION__))
;
4551 Lex.Lex();
4552
4553 // MDString:
4554 // ::= '!' STRINGCONSTANT
4555 if (Lex.getKind() == lltok::StringConstant) {
4556 MDString *S;
4557 if (ParseMDString(S))
4558 return true;
4559 MD = S;
4560 return false;
4561 }
4562
4563 // MDNode:
4564 // !{ ... }
4565 // !7
4566 MDNode *N;
4567 if (ParseMDNodeTail(N))
4568 return true;
4569 MD = N;
4570 return false;
4571}
4572
4573//===----------------------------------------------------------------------===//
4574// Function Parsing.
4575//===----------------------------------------------------------------------===//
4576
4577bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4578 PerFunctionState *PFS) {
4579 if (Ty->isFunctionTy())
4580 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4581
4582 switch (ID.Kind) {
4583 case ValID::t_LocalID:
4584 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4585 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4586 return V == nullptr;
4587 case ValID::t_LocalName:
4588 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4589 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4590 return V == nullptr;
4591 case ValID::t_InlineAsm: {
4592 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4593 return Error(ID.Loc, "invalid type for inline asm constraint string");
4594 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4595 (ID.UIntVal >> 1) & 1,
4596 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4597 return false;
4598 }
4599 case ValID::t_GlobalName:
4600 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4601 return V == nullptr;
4602 case ValID::t_GlobalID:
4603 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4604 return V == nullptr;
4605 case ValID::t_APSInt:
4606 if (!Ty->isIntegerTy())
4607 return Error(ID.Loc, "integer constant must have integer type");
4608 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4609 V = ConstantInt::get(Context, ID.APSIntVal);
4610 return false;
4611 case ValID::t_APFloat:
4612 if (!Ty->isFloatingPointTy() ||
4613 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4614 return Error(ID.Loc, "floating point constant invalid for type");
4615
4616 // The lexer has no type info, so builds all half, float, and double FP
4617 // constants as double. Fix this here. Long double does not need this.
4618 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4619 bool Ignored;
4620 if (Ty->isHalfTy())
4621 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4622 &Ignored);
4623 else if (Ty->isFloatTy())
4624 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4625 &Ignored);
4626 }
4627 V = ConstantFP::get(Context, ID.APFloatVal);
4628
4629 if (V->getType() != Ty)
4630 return Error(ID.Loc, "floating point constant does not have type '" +
4631 getTypeString(Ty) + "'");
4632
4633 return false;
4634 case ValID::t_Null:
4635 if (!Ty->isPointerTy())
4636 return Error(ID.Loc, "null must be a pointer type");
4637 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4638 return false;
4639 case ValID::t_Undef:
4640 // FIXME: LabelTy should not be a first-class type.
4641 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4642 return Error(ID.Loc, "invalid type for undef constant");
4643 V = UndefValue::get(Ty);
4644 return false;
4645 case ValID::t_EmptyArray:
4646 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4647 return Error(ID.Loc, "invalid empty array initializer");
4648 V = UndefValue::get(Ty);
4649 return false;
4650 case ValID::t_Zero:
4651 // FIXME: LabelTy should not be a first-class type.
4652 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4653 return Error(ID.Loc, "invalid type for null constant");
4654 V = Constant::getNullValue(Ty);
4655 return false;
4656 case ValID::t_None:
4657 if (!Ty->isTokenTy())
4658 return Error(ID.Loc, "invalid type for none constant");
4659 V = Constant::getNullValue(Ty);
4660 return false;
4661 case ValID::t_Constant:
4662 if (ID.ConstantVal->getType() != Ty)
4663 return Error(ID.Loc, "constant expression type mismatch");
4664
4665 V = ID.ConstantVal;
4666 return false;
4667 case ValID::t_ConstantStruct:
4668 case ValID::t_PackedConstantStruct:
4669 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4670 if (ST->getNumElements() != ID.UIntVal)
4671 return Error(ID.Loc,
4672 "initializer with struct type has wrong # elements");
4673 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4674 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4675
4676 // Verify that the elements are compatible with the structtype.
4677 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4678 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4679 return Error(ID.Loc, "element " + Twine(i) +
4680 " of struct initializer doesn't match struct element type");
4681
4682 V = ConstantStruct::get(
4683 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4684 } else
4685 return Error(ID.Loc, "constant expression type mismatch");
4686 return false;
4687 }
4688 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4688)
;
4689}
4690
4691bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4692 C = nullptr;
4693 ValID ID;
4694 auto Loc = Lex.getLoc();
4695 if (ParseValID(ID, /*PFS=*/nullptr))
4696 return true;
4697 switch (ID.Kind) {
4698 case ValID::t_APSInt:
4699 case ValID::t_APFloat:
4700 case ValID::t_Undef:
4701 case ValID::t_Constant:
4702 case ValID::t_ConstantStruct:
4703 case ValID::t_PackedConstantStruct: {
4704 Value *V;
4705 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4706 return true;
4707 assert(isa<Constant>(V) && "Expected a constant value")((isa<Constant>(V) && "Expected a constant value"
) ? static_cast<void> (0) : __assert_fail ("isa<Constant>(V) && \"Expected a constant value\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4707, __PRETTY_FUNCTION__))
;
4708 C = cast<Constant>(V);
4709 return false;
4710 }
4711 case ValID::t_Null:
4712 C = Constant::getNullValue(Ty);
4713 return false;
4714 default:
4715 return Error(Loc, "expected a constant value");
4716 }
4717}
4718
4719bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4720 V = nullptr;
4721 ValID ID;
4722 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4723}
4724
4725bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4726 Type *Ty = nullptr;
4727 return ParseType(Ty) ||
4728 ParseValue(Ty, V, PFS);
4729}
4730
4731bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4732 PerFunctionState &PFS) {
4733 Value *V;
4734 Loc = Lex.getLoc();
4735 if (ParseTypeAndValue(V, PFS)) return true;
4736 if (!isa<BasicBlock>(V))
4737 return Error(Loc, "expected a basic block");
4738 BB = cast<BasicBlock>(V);
4739 return false;
4740}
4741
4742/// FunctionHeader
4743/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
4744/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
4745/// '(' ArgList ')' OptFuncAttrs OptSection OptionalAlign OptGC
4746/// OptionalPrefix OptionalPrologue OptPersonalityFn
4747bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4748 // Parse the linkage.
4749 LocTy LinkageLoc = Lex.getLoc();
4750 unsigned Linkage;
4751 unsigned Visibility;
4752 unsigned DLLStorageClass;
4753 bool DSOLocal;
4754 AttrBuilder RetAttrs;
4755 unsigned CC;
4756 bool HasLinkage;
4757 Type *RetType = nullptr;
4758 LocTy RetTypeLoc = Lex.getLoc();
4759 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
4760 DSOLocal) ||
4761 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4762 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4763 return true;
4764
4765 // Verify that the linkage is ok.
4766 switch ((GlobalValue::LinkageTypes)Linkage) {
4767 case GlobalValue::ExternalLinkage:
4768 break; // always ok.
4769 case GlobalValue::ExternalWeakLinkage:
4770 if (isDefine)
4771 return Error(LinkageLoc, "invalid linkage for function definition");
4772 break;
4773 case GlobalValue::PrivateLinkage:
4774 case GlobalValue::InternalLinkage:
4775 case GlobalValue::AvailableExternallyLinkage:
4776 case GlobalValue::LinkOnceAnyLinkage:
4777 case GlobalValue::LinkOnceODRLinkage:
4778 case GlobalValue::WeakAnyLinkage:
4779 case GlobalValue::WeakODRLinkage:
4780 if (!isDefine)
4781 return Error(LinkageLoc, "invalid linkage for function declaration");
4782 break;
4783 case GlobalValue::AppendingLinkage:
4784 case GlobalValue::CommonLinkage:
4785 return Error(LinkageLoc, "invalid function linkage type");
4786 }
4787
4788 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4789 return Error(LinkageLoc,
4790 "symbol with local linkage must have default visibility");
4791
4792 if (!FunctionType::isValidReturnType(RetType))
4793 return Error(RetTypeLoc, "invalid function return type");
4794
4795 LocTy NameLoc = Lex.getLoc();
4796
4797 std::string FunctionName;
4798 if (Lex.getKind() == lltok::GlobalVar) {
4799 FunctionName = Lex.getStrVal();
4800 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4801 unsigned NameID = Lex.getUIntVal();
4802
4803 if (NameID != NumberedVals.size())
4804 return TokError("function expected to be numbered '%" +
4805 Twine(NumberedVals.size()) + "'");
4806 } else {
4807 return TokError("expected function name");
4808 }
4809
4810 Lex.Lex();
4811
4812 if (Lex.getKind() != lltok::lparen)
4813 return TokError("expected '(' in function argument list");
4814
4815 SmallVector<ArgInfo, 8> ArgList;
4816 bool isVarArg;
4817 AttrBuilder FuncAttrs;
4818 std::vector<unsigned> FwdRefAttrGrps;
4819 LocTy BuiltinLoc;
4820 std::string Section;
4821 unsigned Alignment;
4822 std::string GC;
4823 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4824 Constant *Prefix = nullptr;
4825 Constant *Prologue = nullptr;
4826 Constant *PersonalityFn = nullptr;
4827 Comdat *C;
4828
4829 if (ParseArgumentList(ArgList, isVarArg) ||
4830 ParseOptionalUnnamedAddr(UnnamedAddr) ||
4831 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4832 BuiltinLoc) ||
4833 (EatIfPresent(lltok::kw_section) &&
4834 ParseStringConstant(Section)) ||
4835 parseOptionalComdat(FunctionName, C) ||
4836 ParseOptionalAlignment(Alignment) ||
4837 (EatIfPresent(lltok::kw_gc) &&
4838 ParseStringConstant(GC)) ||
4839 (EatIfPresent(lltok::kw_prefix) &&
4840 ParseGlobalTypeAndValue(Prefix)) ||
4841 (EatIfPresent(lltok::kw_prologue) &&
4842 ParseGlobalTypeAndValue(Prologue)) ||
4843 (EatIfPresent(lltok::kw_personality) &&
4844 ParseGlobalTypeAndValue(PersonalityFn)))
4845 return true;
4846
4847 if (FuncAttrs.contains(Attribute::Builtin))
4848 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4849
4850 // If the alignment was parsed as an attribute, move to the alignment field.
4851 if (FuncAttrs.hasAlignmentAttr()) {
4852 Alignment = FuncAttrs.getAlignment();
4853 FuncAttrs.removeAttribute(Attribute::Alignment);
4854 }
4855
4856 // Okay, if we got here, the function is syntactically valid. Convert types
4857 // and do semantic checks.
4858 std::vector<Type*> ParamTypeList;
4859 SmallVector<AttributeSet, 8> Attrs;
4860
4861 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4862 ParamTypeList.push_back(ArgList[i].Ty);
4863 Attrs.push_back(ArgList[i].Attrs);
4864 }
4865
4866 AttributeList PAL =
4867 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
4868 AttributeSet::get(Context, RetAttrs), Attrs);
4869
4870 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4871 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4872
4873 FunctionType *FT =
4874 FunctionType::get(RetType, ParamTypeList, isVarArg);
4875 PointerType *PFT = PointerType::getUnqual(FT);
4876
4877 Fn = nullptr;
4878 if (!FunctionName.empty()) {
4879 // If this was a definition of a forward reference, remove the definition
4880 // from the forward reference table and fill in the forward ref.
4881 auto FRVI = ForwardRefVals.find(FunctionName);
4882 if (FRVI != ForwardRefVals.end()) {
4883 Fn = M->getFunction(FunctionName);
4884 if (!Fn)
4885 return Error(FRVI->second.second, "invalid forward reference to "
4886 "function as global value!");
4887 if (Fn->getType() != PFT)
4888 return Error(FRVI->second.second, "invalid forward reference to "
4889 "function '" + FunctionName + "' with wrong type!");
4890
4891 ForwardRefVals.erase(FRVI);
4892 } else if ((Fn = M->getFunction(FunctionName))) {
4893 // Reject redefinitions.
4894 return Error(NameLoc, "invalid redefinition of function '" +
4895 FunctionName + "'");
4896 } else if (M->getNamedValue(FunctionName)) {
4897 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4898 }
4899
4900 } else {
4901 // If this is a definition of a forward referenced function, make sure the
4902 // types agree.
4903 auto I = ForwardRefValIDs.find(NumberedVals.size());
4904 if (I != ForwardRefValIDs.end()) {
4905 Fn = cast<Function>(I->second.first);
4906 if (Fn->getType() != PFT)
4907 return Error(NameLoc, "type of definition and forward reference of '@" +
4908 Twine(NumberedVals.size()) + "' disagree");
4909 ForwardRefValIDs.erase(I);
4910 }
4911 }
4912
4913 if (!Fn)
4914 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4915 else // Move the forward-reference to the correct spot in the module.
4916 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4917
4918 if (FunctionName.empty())
4919 NumberedVals.push_back(Fn);
4920
4921 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4922 Fn->setDSOLocal(DSOLocal);
4923 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4924 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4925 Fn->setCallingConv(CC);
4926 Fn->setAttributes(PAL);
4927 Fn->setUnnamedAddr(UnnamedAddr);
4928 Fn->setAlignment(Alignment);
4929 Fn->setSection(Section);
4930 Fn->setComdat(C);
4931 Fn->setPersonalityFn(PersonalityFn);
4932 if (!GC.empty()) Fn->setGC(GC);
4933 Fn->setPrefixData(Prefix);
4934 Fn->setPrologueData(Prologue);
4935 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4936
4937 // Add all of the arguments we parsed to the function.
4938 Function::arg_iterator ArgIt = Fn->arg_begin();
4939 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4940 // If the argument has a name, insert it into the argument symbol table.
4941 if (ArgList[i].Name.empty()) continue;
4942
4943 // Set the name, if it conflicted, it will be auto-renamed.
4944 ArgIt->setName(ArgList[i].Name);
4945
4946 if (ArgIt->getName() != ArgList[i].Name)
4947 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4948 ArgList[i].Name + "'");
4949 }
4950
4951 if (isDefine)
4952 return false;
4953
4954 // Check the declaration has no block address forward references.
4955 ValID ID;
4956 if (FunctionName.empty()) {
4957 ID.Kind = ValID::t_GlobalID;
4958 ID.UIntVal = NumberedVals.size() - 1;
4959 } else {
4960 ID.Kind = ValID::t_GlobalName;
4961 ID.StrVal = FunctionName;
4962 }
4963 auto Blocks = ForwardRefBlockAddresses.find(ID);
4964 if (Blocks != ForwardRefBlockAddresses.end())
4965 return Error(Blocks->first.Loc,
4966 "cannot take blockaddress inside a declaration");
4967 return false;
4968}
4969
4970bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4971 ValID ID;
4972 if (FunctionNumber == -1) {
4973 ID.Kind = ValID::t_GlobalName;
4974 ID.StrVal = F.getName();
4975 } else {
4976 ID.Kind = ValID::t_GlobalID;
4977 ID.UIntVal = FunctionNumber;
4978 }
4979
4980 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4981 if (Blocks == P.ForwardRefBlockAddresses.end())
4982 return false;
4983
4984 for (const auto &I : Blocks->second) {
4985 const ValID &BBID = I.first;
4986 GlobalValue *GV = I.second;
4987
4988 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&(((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName
) && "Expected local id or name") ? static_cast<void
> (0) : __assert_fail ("(BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) && \"Expected local id or name\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4989, __PRETTY_FUNCTION__))
4989 "Expected local id or name")(((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName
) && "Expected local id or name") ? static_cast<void
> (0) : __assert_fail ("(BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) && \"Expected local id or name\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 4989, __PRETTY_FUNCTION__))
;
4990 BasicBlock *BB;
4991 if (BBID.Kind == ValID::t_LocalName)
4992 BB = GetBB(BBID.StrVal, BBID.Loc);
4993 else
4994 BB = GetBB(BBID.UIntVal, BBID.Loc);
4995 if (!BB)
4996 return P.Error(BBID.Loc, "referenced value is not a basic block");
4997
4998 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4999 GV->eraseFromParent();
5000 }
5001
5002 P.ForwardRefBlockAddresses.erase(Blocks);
5003 return false;
5004}
5005
5006/// ParseFunctionBody
5007/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5008bool LLParser::ParseFunctionBody(Function &Fn) {
5009 if (Lex.getKind() != lltok::lbrace)
5010 return TokError("expected '{' in function body");
5011 Lex.Lex(); // eat the {.
5012
5013 int FunctionNumber = -1;
5014 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5015
5016 PerFunctionState PFS(*this, Fn, FunctionNumber);
5017
5018 // Resolve block addresses and allow basic blocks to be forward-declared
5019 // within this function.
5020 if (PFS.resolveForwardRefBlockAddresses())
5021 return true;
5022 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5023
5024 // We need at least one basic block.
5025 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5026 return TokError("function body requires at least one basic block");
5027
5028 while (Lex.getKind() != lltok::rbrace &&
5029 Lex.getKind() != lltok::kw_uselistorder)
5030 if (ParseBasicBlock(PFS)) return true;
5031
5032 while (Lex.getKind() != lltok::rbrace)
5033 if (ParseUseListOrder(&PFS))
5034 return true;
5035
5036 // Eat the }.
5037 Lex.Lex();
5038
5039 // Verify function is ok.
5040 return PFS.FinishFunction();
5041}
5042
5043/// ParseBasicBlock
5044/// ::= LabelStr? Instruction*
5045bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5046 // If this basic block starts out with a name, remember it.
5047 std::string Name;
5048 LocTy NameLoc = Lex.getLoc();
5049 if (Lex.getKind() == lltok::LabelStr) {
5050 Name = Lex.getStrVal();
5051 Lex.Lex();
5052 }
5053
5054 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5055 if (!BB)
5056 return Error(NameLoc,
5057 "unable to create block named '" + Name + "'");
5058
5059 std::string NameStr;
5060
5061 // Parse the instructions in this block until we get a terminator.
5062 Instruction *Inst;
5063 do {
5064 // This instruction may have three possibilities for a name: a) none
5065 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5066 LocTy NameLoc = Lex.getLoc();
5067 int NameID = -1;
5068 NameStr = "";
5069
5070 if (Lex.getKind() == lltok::LocalVarID) {
5071 NameID = Lex.getUIntVal();
5072 Lex.Lex();
5073 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5074 return true;
5075 } else if (Lex.getKind() == lltok::LocalVar) {
5076 NameStr = Lex.getStrVal();
5077 Lex.Lex();
5078 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5079 return true;
5080 }
5081
5082 switch (ParseInstruction(Inst, BB, PFS)) {
5083 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 5083)
;
5084 case InstError: return true;
5085 case InstNormal:
5086 BB->getInstList().push_back(Inst);
5087
5088 // With a normal result, we check to see if the instruction is followed by
5089 // a comma and metadata.
5090 if (EatIfPresent(lltok::comma))
5091 if (ParseInstructionMetadata(*Inst))
5092 return true;
5093 break;
5094 case InstExtraComma:
5095 BB->getInstList().push_back(Inst);
5096
5097 // If the instruction parser ate an extra comma at the end of it, it
5098 // *must* be followed by metadata.
5099 if (ParseInstructionMetadata(*Inst))
5100 return true;
5101 break;
5102 }
5103
5104 // Set the name on the instruction.
5105 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5106 } while (!isa<TerminatorInst>(Inst));
5107
5108 return false;
5109}
5110
5111//===----------------------------------------------------------------------===//
5112// Instruction Parsing.
5113//===----------------------------------------------------------------------===//
5114
5115/// ParseInstruction - Parse one of the many different instructions.
5116///
5117int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5118 PerFunctionState &PFS) {
5119 lltok::Kind Token = Lex.getKind();
5120 if (Token == lltok::Eof)
5121 return TokError("found end of file when expecting more instructions");
5122 LocTy Loc = Lex.getLoc();
5123 unsigned KeywordVal = Lex.getUIntVal();
5124 Lex.Lex(); // Eat the keyword.
5125
5126 switch (Token) {
5127 default: return Error(Loc, "expected instruction opcode");
5128 // Terminator Instructions.
5129 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5130 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5131 case lltok::kw_br: return ParseBr(Inst, PFS);
5132 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5133 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5134 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5135 case lltok::kw_resume: return ParseResume(Inst, PFS);
5136 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5137 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5138 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5139 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5140 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5141 // Binary Operators.
5142 case lltok::kw_add:
5143 case lltok::kw_sub:
5144 case lltok::kw_mul:
5145 case lltok::kw_shl: {
5146 bool NUW = EatIfPresent(lltok::kw_nuw);
5147 bool NSW = EatIfPresent(lltok::kw_nsw);
5148 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5149
5150 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5151
5152 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5153 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5154 return false;
5155 }
5156 case lltok::kw_fadd:
5157 case lltok::kw_fsub:
5158 case lltok::kw_fmul:
5159 case lltok::kw_fdiv:
5160 case lltok::kw_frem: {
5161 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5162 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5163 if (Res != 0)
5164 return Res;
5165 if (FMF.any())
5166 Inst->setFastMathFlags(FMF);
5167 return 0;
5168 }
5169
5170 case lltok::kw_sdiv:
5171 case lltok::kw_udiv:
5172 case lltok::kw_lshr:
5173 case lltok::kw_ashr: {
5174 bool Exact = EatIfPresent(lltok::kw_exact);
5175
5176 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5177 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5178 return false;
5179 }
5180
5181 case lltok::kw_urem:
5182 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5183 case lltok::kw_and:
5184 case lltok::kw_or:
5185 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5186 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5187 case lltok::kw_fcmp: {
5188 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5189 int Res = ParseCompare(Inst, PFS, KeywordVal);
5190 if (Res != 0)
5191 return Res;
5192 if (FMF.any())
5193 Inst->setFastMathFlags(FMF);
5194 return 0;
5195 }
5196
5197 // Casts.
5198 case lltok::kw_trunc:
5199 case lltok::kw_zext:
5200 case lltok::kw_sext:
5201 case lltok::kw_fptrunc:
5202 case lltok::kw_fpext:
5203 case lltok::kw_bitcast:
5204 case lltok::kw_addrspacecast:
5205 case lltok::kw_uitofp:
5206 case lltok::kw_sitofp:
5207 case lltok::kw_fptoui:
5208 case lltok::kw_fptosi:
5209 case lltok::kw_inttoptr:
5210 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5211 // Other.
5212 case lltok::kw_select: return ParseSelect(Inst, PFS);
5213 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5214 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5215 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5216 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5217 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5218 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5219 // Call.
5220 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5221 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5222 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5223 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5224 // Memory.
5225 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5226 case lltok::kw_load: return ParseLoad(Inst, PFS);
5227 case lltok::kw_store: return ParseStore(Inst, PFS);
5228 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5229 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5230 case lltok::kw_fence: return ParseFence(Inst, PFS);
5231 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5232 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5233 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5234 }
5235}
5236
5237/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5238bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5239 if (Opc == Instruction::FCmp) {
5240 switch (Lex.getKind()) {
5241 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5242 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5243 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5244 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5245 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5246 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5247 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5248 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5249 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5250 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5251 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5252 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5253 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5254 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5255 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5256 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5257 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5258 }
5259 } else {
5260 switch (Lex.getKind()) {
5261 default: return TokError("expected icmp predicate (e.g. 'eq')");
5262 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5263 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5264 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5265 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5266 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5267 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5268 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5269 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5270 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5271 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5272 }
5273 }
5274 Lex.Lex();
5275 return false;
5276}
5277
5278//===----------------------------------------------------------------------===//
5279// Terminator Instructions.
5280//===----------------------------------------------------------------------===//
5281
5282/// ParseRet - Parse a return instruction.
5283/// ::= 'ret' void (',' !dbg, !1)*
5284/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5285bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5286 PerFunctionState &PFS) {
5287 SMLoc TypeLoc = Lex.getLoc();
5288 Type *Ty = nullptr;
5289 if (ParseType(Ty, true /*void allowed*/)) return true;
5290
5291 Type *ResType = PFS.getFunction().getReturnType();
5292
5293 if (Ty->isVoidTy()) {
5294 if (!ResType->isVoidTy())
5295 return Error(TypeLoc, "value doesn't match function result type '" +
5296 getTypeString(ResType) + "'");
5297
5298 Inst = ReturnInst::Create(Context);
5299 return false;
5300 }
5301
5302 Value *RV;
5303 if (ParseValue(Ty, RV, PFS)) return true;
5304
5305 if (ResType != RV->getType())
5306 return Error(TypeLoc, "value doesn't match function result type '" +
5307 getTypeString(ResType) + "'");
5308
5309 Inst = ReturnInst::Create(Context, RV);
5310 return false;
5311}
5312
5313/// ParseBr
5314/// ::= 'br' TypeAndValue
5315/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5316bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5317 LocTy Loc, Loc2;
5318 Value *Op0;
5319 BasicBlock *Op1, *Op2;
5320 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5321
5322 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5323 Inst = BranchInst::Create(BB);
5324 return false;
5325 }
5326
5327 if (Op0->getType() != Type::getInt1Ty(Context))
5328 return Error(Loc, "branch condition must have 'i1' type");
5329
5330 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5331 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5332 ParseToken(lltok::comma, "expected ',' after true destination") ||
5333 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5334 return true;
5335
5336 Inst = BranchInst::Create(Op1, Op2, Op0);
5337 return false;
5338}
5339
5340/// ParseSwitch
5341/// Instruction
5342/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5343/// JumpTable
5344/// ::= (TypeAndValue ',' TypeAndValue)*
5345bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5346 LocTy CondLoc, BBLoc;
5347 Value *Cond;
5348 BasicBlock *DefaultBB;
5349 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5350 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5351 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5352 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5353 return true;
5354
5355 if (!Cond->getType()->isIntegerTy())
5356 return Error(CondLoc, "switch condition must have integer type");
5357
5358 // Parse the jump table pairs.
5359 SmallPtrSet<Value*, 32> SeenCases;
5360 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5361 while (Lex.getKind() != lltok::rsquare) {
5362 Value *Constant;
5363 BasicBlock *DestBB;
5364
5365 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5366 ParseToken(lltok::comma, "expected ',' after case value") ||
5367 ParseTypeAndBasicBlock(DestBB, PFS))
5368 return true;
5369
5370 if (!SeenCases.insert(Constant).second)
5371 return Error(CondLoc, "duplicate case value in switch");
5372 if (!isa<ConstantInt>(Constant))
5373 return Error(CondLoc, "case value is not a constant integer");
5374
5375 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5376 }
5377
5378 Lex.Lex(); // Eat the ']'.
5379
5380 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5381 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5382 SI->addCase(Table[i].first, Table[i].second);
5383 Inst = SI;
5384 return false;
5385}
5386
5387/// ParseIndirectBr
5388/// Instruction
5389/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5390bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5391 LocTy AddrLoc;
5392 Value *Address;
5393 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5394 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5395 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5396 return true;
5397
5398 if (!Address->getType()->isPointerTy())
5399 return Error(AddrLoc, "indirectbr address must have pointer type");
5400
5401 // Parse the destination list.
5402 SmallVector<BasicBlock*, 16> DestList;
5403
5404 if (Lex.getKind() != lltok::rsquare) {
5405 BasicBlock *DestBB;
5406 if (ParseTypeAndBasicBlock(DestBB, PFS))
5407 return true;
5408 DestList.push_back(DestBB);
5409
5410 while (EatIfPresent(lltok::comma)) {
5411 if (ParseTypeAndBasicBlock(DestBB, PFS))
5412 return true;
5413 DestList.push_back(DestBB);
5414 }
5415 }
5416
5417 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5418 return true;
5419
5420 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5421 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5422 IBI->addDestination(DestList[i]);
5423 Inst = IBI;
5424 return false;
5425}
5426
5427/// ParseInvoke
5428/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5429/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5430bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5431 LocTy CallLoc = Lex.getLoc();
5432 AttrBuilder RetAttrs, FnAttrs;
5433 std::vector<unsigned> FwdRefAttrGrps;
5434 LocTy NoBuiltinLoc;
5435 unsigned CC;
5436 Type *RetType = nullptr;
5437 LocTy RetTypeLoc;
5438 ValID CalleeID;
5439 SmallVector<ParamInfo, 16> ArgList;
5440 SmallVector<OperandBundleDef, 2> BundleList;
5441
5442 BasicBlock *NormalBB, *UnwindBB;
5443 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5444 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5445 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5446 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5447 NoBuiltinLoc) ||
5448 ParseOptionalOperandBundles(BundleList, PFS) ||
5449 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5450 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5451 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5452 ParseTypeAndBasicBlock(UnwindBB, PFS))
5453 return true;
5454
5455 // If RetType is a non-function pointer type, then this is the short syntax
5456 // for the call, which means that RetType is just the return type. Infer the
5457 // rest of the function argument types from the arguments that are present.
5458 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5459 if (!Ty) {
5460 // Pull out the types of all of the arguments...
5461 std::vector<Type*> ParamTypes;
5462 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5463 ParamTypes.push_back(ArgList[i].V->getType());
5464
5465 if (!FunctionType::isValidReturnType(RetType))
5466 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5467
5468 Ty = FunctionType::get(RetType, ParamTypes, false);
5469 }
5470
5471 CalleeID.FTy = Ty;
5472
5473 // Look up the callee.
5474 Value *Callee;
5475 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5476 return true;
5477
5478 // Set up the Attribute for the function.
5479 SmallVector<Value *, 8> Args;
5480 SmallVector<AttributeSet, 8> ArgAttrs;
5481
5482 // Loop through FunctionType's arguments and ensure they are specified
5483 // correctly. Also, gather any parameter attributes.
5484 FunctionType::param_iterator I = Ty->param_begin();
5485 FunctionType::param_iterator E = Ty->param_end();
5486 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5487 Type *ExpectedTy = nullptr;
5488 if (I != E) {
5489 ExpectedTy = *I++;
5490 } else if (!Ty->isVarArg()) {
5491 return Error(ArgList[i].Loc, "too many arguments specified");
5492 }
5493
5494 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5495 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5496 getTypeString(ExpectedTy) + "'");
5497 Args.push_back(ArgList[i].V);
5498 ArgAttrs.push_back(ArgList[i].Attrs);
5499 }
5500
5501 if (I != E)
5502 return Error(CallLoc, "not enough parameters specified for call");
5503
5504 if (FnAttrs.hasAlignmentAttr())
5505 return Error(CallLoc, "invoke instructions may not have an alignment");
5506
5507 // Finish off the Attribute and check them
5508 AttributeList PAL =
5509 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5510 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5511
5512 InvokeInst *II =
5513 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5514 II->setCallingConv(CC);
5515 II->setAttributes(PAL);
5516 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5517 Inst = II;
5518 return false;
5519}
5520
5521/// ParseResume
5522/// ::= 'resume' TypeAndValue
5523bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5524 Value *Exn; LocTy ExnLoc;
5525 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5526 return true;
5527
5528 ResumeInst *RI = ResumeInst::Create(Exn);
5529 Inst = RI;
5530 return false;
5531}
5532
5533bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5534 PerFunctionState &PFS) {
5535 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5536 return true;
5537
5538 while (Lex.getKind() != lltok::rsquare) {
5539 // If this isn't the first argument, we need a comma.
5540 if (!Args.empty() &&
5541 ParseToken(lltok::comma, "expected ',' in argument list"))
5542 return true;
5543
5544 // Parse the argument.
5545 LocTy ArgLoc;
5546 Type *ArgTy = nullptr;
5547 if (ParseType(ArgTy, ArgLoc))
5548 return true;
5549
5550 Value *V;
5551 if (ArgTy->isMetadataTy()) {
5552 if (ParseMetadataAsValue(V, PFS))
5553 return true;
5554 } else {
5555 if (ParseValue(ArgTy, V, PFS))
5556 return true;
5557 }
5558 Args.push_back(V);
5559 }
5560
5561 Lex.Lex(); // Lex the ']'.
5562 return false;
5563}
5564
5565/// ParseCleanupRet
5566/// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5567bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5568 Value *CleanupPad = nullptr;
5569
5570 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5571 return true;
5572
5573 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5574 return true;
5575
5576 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5577 return true;
5578
5579 BasicBlock *UnwindBB = nullptr;
5580 if (Lex.getKind() == lltok::kw_to) {
5581 Lex.Lex();
5582 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5583 return true;
5584 } else {
5585 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5586 return true;
5587 }
5588 }
5589
5590 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5591 return false;
5592}
5593
5594/// ParseCatchRet
5595/// ::= 'catchret' from Parent Value 'to' TypeAndValue
5596bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5597 Value *CatchPad = nullptr;
5598
5599 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5600 return true;
5601
5602 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5603 return true;
5604
5605 BasicBlock *BB;
5606 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5607 ParseTypeAndBasicBlock(BB, PFS))
5608 return true;
5609
5610 Inst = CatchReturnInst::Create(CatchPad, BB);
5611 return false;
5612}
5613
5614/// ParseCatchSwitch
5615/// ::= 'catchswitch' within Parent
5616bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5617 Value *ParentPad;
5618
5619 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5620 return true;
5621
5622 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5623 Lex.getKind() != lltok::LocalVarID)
5624 return TokError("expected scope value for catchswitch");
5625
5626 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5627 return true;
5628
5629 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5630 return true;
5631
5632 SmallVector<BasicBlock *, 32> Table;
5633 do {
5634 BasicBlock *DestBB;
5635 if (ParseTypeAndBasicBlock(DestBB, PFS))
5636 return true;
5637 Table.push_back(DestBB);
5638 } while (EatIfPresent(lltok::comma));
5639
5640 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5641 return true;
5642
5643 if (ParseToken(lltok::kw_unwind,
5644 "expected 'unwind' after catchswitch scope"))
5645 return true;
5646
5647 BasicBlock *UnwindBB = nullptr;
5648 if (EatIfPresent(lltok::kw_to)) {
5649 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5650 return true;
5651 } else {
5652 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5653 return true;
5654 }
5655
5656 auto *CatchSwitch =
5657 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5658 for (BasicBlock *DestBB : Table)
5659 CatchSwitch->addHandler(DestBB);
5660 Inst = CatchSwitch;
5661 return false;
5662}
5663
5664/// ParseCatchPad
5665/// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5666bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5667 Value *CatchSwitch = nullptr;
5668
5669 if (ParseToken(lltok::kw_within, "expected 'within' after catchpad"))
5670 return true;
5671
5672 if (Lex.getKind() != lltok::LocalVar && Lex.getKind() != lltok::LocalVarID)
5673 return TokError("expected scope value for catchpad");
5674
5675 if (ParseValue(Type::getTokenTy(Context), CatchSwitch, PFS))
5676 return true;
5677
5678 SmallVector<Value *, 8> Args;
5679 if (ParseExceptionArgs(Args, PFS))
5680 return true;
5681
5682 Inst = CatchPadInst::Create(CatchSwitch, Args);
5683 return false;
5684}
5685
5686/// ParseCleanupPad
5687/// ::= 'cleanuppad' within Parent ParamList
5688bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5689 Value *ParentPad = nullptr;
5690
5691 if (ParseToken(lltok::kw_within, "expected 'within' after cleanuppad"))
5692 return true;
5693
5694 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5695 Lex.getKind() != lltok::LocalVarID)
5696 return TokError("expected scope value for cleanuppad");
5697
5698 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5699 return true;
5700
5701 SmallVector<Value *, 8> Args;
5702 if (ParseExceptionArgs(Args, PFS))
5703 return true;
5704
5705 Inst = CleanupPadInst::Create(ParentPad, Args);
5706 return false;
5707}
5708
5709//===----------------------------------------------------------------------===//
5710// Binary Operators.
5711//===----------------------------------------------------------------------===//
5712
5713/// ParseArithmetic
5714/// ::= ArithmeticOps TypeAndValue ',' Value
5715///
5716/// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5717/// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5718bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5719 unsigned Opc, unsigned OperandType) {
5720 LocTy Loc; Value *LHS, *RHS;
5721 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5722 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5723 ParseValue(LHS->getType(), RHS, PFS))
5724 return true;
5725
5726 bool Valid;
5727 switch (OperandType) {
5728 default: llvm_unreachable("Unknown operand type!")::llvm::llvm_unreachable_internal("Unknown operand type!", "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 5728)
;
5729 case 0: // int or FP.
5730 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5731 LHS->getType()->isFPOrFPVectorTy();
5732 break;
5733 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5734 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5735 }
5736
5737 if (!Valid)
5738 return Error(Loc, "invalid operand type for instruction");
5739
5740 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5741 return false;
5742}
5743
5744/// ParseLogical
5745/// ::= ArithmeticOps TypeAndValue ',' Value {
5746bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5747 unsigned Opc) {
5748 LocTy Loc; Value *LHS, *RHS;
5749 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5750 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5751 ParseValue(LHS->getType(), RHS, PFS))
5752 return true;
5753
5754 if (!LHS->getType()->isIntOrIntVectorTy())
5755 return Error(Loc,"instruction requires integer or integer vector operands");
5756
5757 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5758 return false;
5759}
5760
5761/// ParseCompare
5762/// ::= 'icmp' IPredicates TypeAndValue ',' Value
5763/// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5764bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5765 unsigned Opc) {
5766 // Parse the integer/fp comparison predicate.
5767 LocTy Loc;
5768 unsigned Pred;
5769 Value *LHS, *RHS;
5770 if (ParseCmpPredicate(Pred, Opc) ||
5771 ParseTypeAndValue(LHS, Loc, PFS) ||
5772 ParseToken(lltok::comma, "expected ',' after compare value") ||
5773 ParseValue(LHS->getType(), RHS, PFS))
5774 return true;
5775
5776 if (Opc == Instruction::FCmp) {
5777 if (!LHS->getType()->isFPOrFPVectorTy())
5778 return Error(Loc, "fcmp requires floating point operands");
5779 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5780 } else {
5781 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!")((Opc == Instruction::ICmp && "Unknown opcode for CmpInst!"
) ? static_cast<void> (0) : __assert_fail ("Opc == Instruction::ICmp && \"Unknown opcode for CmpInst!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 5781, __PRETTY_FUNCTION__))
;
5782 if (!LHS->getType()->isIntOrIntVectorTy() &&
5783 !LHS->getType()->isPtrOrPtrVectorTy())
5784 return Error(Loc, "icmp requires integer operands");
5785 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5786 }
5787 return false;
5788}
5789
5790//===----------------------------------------------------------------------===//
5791// Other Instructions.
5792//===----------------------------------------------------------------------===//
5793
5794
5795/// ParseCast
5796/// ::= CastOpc TypeAndValue 'to' Type
5797bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5798 unsigned Opc) {
5799 LocTy Loc;
5800 Value *Op;
5801 Type *DestTy = nullptr;
5802 if (ParseTypeAndValue(Op, Loc, PFS) ||
5803 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5804 ParseType(DestTy))
5805 return true;
5806
5807 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5808 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5809 return Error(Loc, "invalid cast opcode for cast from '" +
5810 getTypeString(Op->getType()) + "' to '" +
5811 getTypeString(DestTy) + "'");
5812 }
5813 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5814 return false;
5815}
5816
5817/// ParseSelect
5818/// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5819bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5820 LocTy Loc;
5821 Value *Op0, *Op1, *Op2;
5822 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5823 ParseToken(lltok::comma, "expected ',' after select condition") ||
5824 ParseTypeAndValue(Op1, PFS) ||
5825 ParseToken(lltok::comma, "expected ',' after select value") ||
5826 ParseTypeAndValue(Op2, PFS))
5827 return true;
5828
5829 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5830 return Error(Loc, Reason);
5831
5832 Inst = SelectInst::Create(Op0, Op1, Op2);
5833 return false;
5834}
5835
5836/// ParseVA_Arg
5837/// ::= 'va_arg' TypeAndValue ',' Type
5838bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5839 Value *Op;
5840 Type *EltTy = nullptr;
5841 LocTy TypeLoc;
5842 if (ParseTypeAndValue(Op, PFS) ||
5843 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5844 ParseType(EltTy, TypeLoc))
5845 return true;
5846
5847 if (!EltTy->isFirstClassType())
5848 return Error(TypeLoc, "va_arg requires operand with first class type");
5849
5850 Inst = new VAArgInst(Op, EltTy);
5851 return false;
5852}
5853
5854/// ParseExtractElement
5855/// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5856bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5857 LocTy Loc;
5858 Value *Op0, *Op1;
5859 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5860 ParseToken(lltok::comma, "expected ',' after extract value") ||
5861 ParseTypeAndValue(Op1, PFS))
5862 return true;
5863
5864 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5865 return Error(Loc, "invalid extractelement operands");
5866
5867 Inst = ExtractElementInst::Create(Op0, Op1);
5868 return false;
5869}
5870
5871/// ParseInsertElement
5872/// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5873bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5874 LocTy Loc;
5875 Value *Op0, *Op1, *Op2;
5876 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5877 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5878 ParseTypeAndValue(Op1, PFS) ||
5879 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5880 ParseTypeAndValue(Op2, PFS))
5881 return true;
5882
5883 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5884 return Error(Loc, "invalid insertelement operands");
5885
5886 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5887 return false;
5888}
5889
5890/// ParseShuffleVector
5891/// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5892bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5893 LocTy Loc;
5894 Value *Op0, *Op1, *Op2;
5895 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5896 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5897 ParseTypeAndValue(Op1, PFS) ||
5898 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5899 ParseTypeAndValue(Op2, PFS))
5900 return true;
5901
5902 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5903 return Error(Loc, "invalid shufflevector operands");
5904
5905 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5906 return false;
5907}
5908
5909/// ParsePHI
5910/// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5911int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5912 Type *Ty = nullptr; LocTy TypeLoc;
5913 Value *Op0, *Op1;
5914
5915 if (ParseType(Ty, TypeLoc) ||
5916 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5917 ParseValue(Ty, Op0, PFS) ||
5918 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5919 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5920 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5921 return true;
5922
5923 bool AteExtraComma = false;
5924 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5925
5926 while (true) {
5927 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5928
5929 if (!EatIfPresent(lltok::comma))
5930 break;
5931
5932 if (Lex.getKind() == lltok::MetadataVar) {
5933 AteExtraComma = true;
5934 break;
5935 }
5936
5937 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5938 ParseValue(Ty, Op0, PFS) ||
5939 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5940 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5941 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5942 return true;
5943 }
5944
5945 if (!Ty->isFirstClassType())
5946 return Error(TypeLoc, "phi node must have first class type");
5947
5948 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5949 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5950 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5951 Inst = PN;
5952 return AteExtraComma ? InstExtraComma : InstNormal;
5953}
5954
5955/// ParseLandingPad
5956/// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5957/// Clause
5958/// ::= 'catch' TypeAndValue
5959/// ::= 'filter'
5960/// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5961bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5962 Type *Ty = nullptr; LocTy TyLoc;
5963
5964 if (ParseType(Ty, TyLoc))
5965 return true;
5966
5967 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5968 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5969
5970 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5971 LandingPadInst::ClauseType CT;
5972 if (EatIfPresent(lltok::kw_catch))
5973 CT = LandingPadInst::Catch;
5974 else if (EatIfPresent(lltok::kw_filter))
5975 CT = LandingPadInst::Filter;
5976 else
5977 return TokError("expected 'catch' or 'filter' clause type");
5978
5979 Value *V;
5980 LocTy VLoc;
5981 if (ParseTypeAndValue(V, VLoc, PFS))
5982 return true;
5983
5984 // A 'catch' type expects a non-array constant. A filter clause expects an
5985 // array constant.
5986 if (CT == LandingPadInst::Catch) {
5987 if (isa<ArrayType>(V->getType()))
5988 Error(VLoc, "'catch' clause has an invalid type");
5989 } else {
5990 if (!isa<ArrayType>(V->getType()))
5991 Error(VLoc, "'filter' clause has an invalid type");
5992 }
5993
5994 Constant *CV = dyn_cast<Constant>(V);
5995 if (!CV)
5996 return Error(VLoc, "clause argument must be a constant");
5997 LP->addClause(CV);
5998 }
5999
6000 Inst = LP.release();
6001 return false;
6002}
6003
6004/// ParseCall
6005/// ::= 'call' OptionalFastMathFlags OptionalCallingConv
6006/// OptionalAttrs Type Value ParameterList OptionalAttrs
6007/// ::= 'tail' 'call' OptionalFastMathFlags OptionalCallingConv
6008/// OptionalAttrs Type Value ParameterList OptionalAttrs
6009/// ::= 'musttail' 'call' OptionalFastMathFlags OptionalCallingConv
6010/// OptionalAttrs Type Value ParameterList OptionalAttrs
6011/// ::= 'notail' 'call' OptionalFastMathFlags OptionalCallingConv
6012/// OptionalAttrs Type Value ParameterList OptionalAttrs
6013bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
6014 CallInst::TailCallKind TCK) {
6015 AttrBuilder RetAttrs, FnAttrs;
6016 std::vector<unsigned> FwdRefAttrGrps;
6017 LocTy BuiltinLoc;
6018 unsigned CC;
6019 Type *RetType = nullptr;
6020 LocTy RetTypeLoc;
6021 ValID CalleeID;
6022 SmallVector<ParamInfo, 16> ArgList;
6023 SmallVector<OperandBundleDef, 2> BundleList;
6024 LocTy CallLoc = Lex.getLoc();
6025
6026 if (TCK != CallInst::TCK_None &&
6027 ParseToken(lltok::kw_call,
6028 "expected 'tail call', 'musttail call', or 'notail call'"))
6029 return true;
6030
6031 FastMathFlags FMF = EatFastMathFlagsIfPresent();
6032
6033 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
6034 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
6035 ParseValID(CalleeID) ||
6036 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
6037 PFS.getFunction().isVarArg()) ||
6038 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
6039 ParseOptionalOperandBundles(BundleList, PFS))
6040 return true;
6041
6042 if (FMF.any() && !RetType->isFPOrFPVectorTy())
6043 return Error(CallLoc, "fast-math-flags specified for call without "
6044 "floating-point scalar or vector return type");
6045
6046 // If RetType is a non-function pointer type, then this is the short syntax
6047 // for the call, which means that RetType is just the return type. Infer the
6048 // rest of the function argument types from the arguments that are present.
6049 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
6050 if (!Ty) {
6051 // Pull out the types of all of the arguments...
6052 std::vector<Type*> ParamTypes;
6053 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
6054 ParamTypes.push_back(ArgList[i].V->getType());
6055
6056 if (!FunctionType::isValidReturnType(RetType))
6057 return Error(RetTypeLoc, "Invalid result type for LLVM function");
6058
6059 Ty = FunctionType::get(RetType, ParamTypes, false);
6060 }
6061
6062 CalleeID.FTy = Ty;
6063
6064 // Look up the callee.
6065 Value *Callee;
6066 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
6067 return true;
6068
6069 // Set up the Attribute for the function.
6070 SmallVector<AttributeSet, 8> Attrs;
6071
6072 SmallVector<Value*, 8> Args;
6073
6074 // Loop through FunctionType's arguments and ensure they are specified
6075 // correctly. Also, gather any parameter attributes.
6076 FunctionType::param_iterator I = Ty->param_begin();
6077 FunctionType::param_iterator E = Ty->param_end();
6078 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
6079 Type *ExpectedTy = nullptr;
6080 if (I != E) {
6081 ExpectedTy = *I++;
6082 } else if (!Ty->isVarArg()) {
6083 return Error(ArgList[i].Loc, "too many arguments specified");
6084 }
6085
6086 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
6087 return Error(ArgList[i].Loc, "argument is not of expected type '" +
6088 getTypeString(ExpectedTy) + "'");
6089 Args.push_back(ArgList[i].V);
6090 Attrs.push_back(ArgList[i].Attrs);
6091 }
6092
6093 if (I != E)
6094 return Error(CallLoc, "not enough parameters specified for call");
6095
6096 if (FnAttrs.hasAlignmentAttr())
6097 return Error(CallLoc, "call instructions may not have an alignment");
6098
6099 // Finish off the Attribute and check them
6100 AttributeList PAL =
6101 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
6102 AttributeSet::get(Context, RetAttrs), Attrs);
6103
6104 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
6105 CI->setTailCallKind(TCK);
6106 CI->setCallingConv(CC);
6107 if (FMF.any())
6108 CI->setFastMathFlags(FMF);
6109 CI->setAttributes(PAL);
6110 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
6111 Inst = CI;
6112 return false;
6113}
6114
6115//===----------------------------------------------------------------------===//
6116// Memory Instructions.
6117//===----------------------------------------------------------------------===//
6118
6119/// ParseAlloc
6120/// ::= 'alloca' 'inalloca'? 'swifterror'? Type (',' TypeAndValue)?
6121/// (',' 'align' i32)? (',', 'addrspace(n))?
6122int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
6123 Value *Size = nullptr;
6124 LocTy SizeLoc, TyLoc, ASLoc;
6125 unsigned Alignment = 0;
6126 unsigned AddrSpace = 0;
6127 Type *Ty = nullptr;
6128
6129 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
6130 bool IsSwiftError = EatIfPresent(lltok::kw_swifterror);
6131
6132 if (ParseType(Ty, TyLoc)) return true;
6133
6134 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
6135 return Error(TyLoc, "invalid type for alloca");
6136
6137 bool AteExtraComma = false;
6138 if (EatIfPresent(lltok::comma)) {
6139 if (Lex.getKind() == lltok::kw_align) {
6140 if (ParseOptionalAlignment(Alignment))
6141 return true;
6142 if (ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma))
6143 return true;
6144 } else if (Lex.getKind() == lltok::kw_addrspace) {
6145 ASLoc = Lex.getLoc();
6146 if (ParseOptionalAddrSpace(AddrSpace))
6147 return true;
6148 } else if (Lex.getKind() == lltok::MetadataVar) {
6149 AteExtraComma = true;
6150 } else {
6151 if (ParseTypeAndValue(Size, SizeLoc, PFS))
6152 return true;
6153 if (EatIfPresent(lltok::comma)) {
6154 if (Lex.getKind() == lltok::kw_align) {
6155 if (ParseOptionalAlignment(Alignment))
6156 return true;
6157 if (ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma))
6158 return true;
6159 } else if (Lex.getKind() == lltok::kw_addrspace) {
6160 ASLoc = Lex.getLoc();
6161 if (ParseOptionalAddrSpace(AddrSpace))
6162 return true;
6163 } else if (Lex.getKind() == lltok::MetadataVar) {
6164 AteExtraComma = true;
6165 }
6166 }
6167 }
6168 }
6169
6170 if (Size && !Size->getType()->isIntegerTy())
6171 return Error(SizeLoc, "element count must have integer type");
6172
6173 const DataLayout &DL = M->getDataLayout();
6174 unsigned AS = DL.getAllocaAddrSpace();
6175 if (AS != AddrSpace) {
6176 // TODO: In the future it should be possible to specify addrspace per-alloca.
6177 return Error(ASLoc, "address space must match datalayout");
6178 }
6179
6180 AllocaInst *AI = new AllocaInst(Ty, AS, Size, Alignment);
6181 AI->setUsedWithInAlloca(IsInAlloca);
6182 AI->setSwiftError(IsSwiftError);
6183 Inst = AI;
6184 return AteExtraComma ? InstExtraComma : InstNormal;
6185}
6186
6187/// ParseLoad
6188/// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
6189/// ::= 'load' 'atomic' 'volatile'? TypeAndValue
6190/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6191int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
6192 Value *Val; LocTy Loc;
6193 unsigned Alignment = 0;
6194 bool AteExtraComma = false;
6195 bool isAtomic = false;
6196 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6197 SyncScope::ID SSID = SyncScope::System;
6198
6199 if (Lex.getKind() == lltok::kw_atomic) {
6200 isAtomic = true;
6201 Lex.Lex();
6202 }
6203
6204 bool isVolatile = false;
6205 if (Lex.getKind() == lltok::kw_volatile) {
6206 isVolatile = true;
6207 Lex.Lex();
6208 }
6209
6210 Type *Ty;
6211 LocTy ExplicitTypeLoc = Lex.getLoc();
6212 if (ParseType(Ty) ||
6213 ParseToken(lltok::comma, "expected comma after load's type") ||
6214 ParseTypeAndValue(Val, Loc, PFS) ||
6215 ParseScopeAndOrdering(isAtomic, SSID, Ordering) ||
6216 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6217 return true;
6218
6219 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
6220 return Error(Loc, "load operand must be a pointer to a first class type");
6221 if (isAtomic && !Alignment)
6222 return Error(Loc, "atomic load must have explicit non-zero alignment");
6223 if (Ordering == AtomicOrdering::Release ||
6224 Ordering == AtomicOrdering::AcquireRelease)
6225 return Error(Loc, "atomic load cannot use Release ordering");
6226
6227 if (Ty != cast<PointerType>(Val->getType())->getElementType())
6228 return Error(ExplicitTypeLoc,
6229 "explicit pointee type doesn't match operand's pointee type");
6230
6231 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, SSID);
6232 return AteExtraComma ? InstExtraComma : InstNormal;
6233}
6234
6235/// ParseStore
6236
6237/// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
6238/// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
6239/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6240int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
6241 Value *Val, *Ptr; LocTy Loc, PtrLoc;
6242 unsigned Alignment = 0;
6243 bool AteExtraComma = false;
6244 bool isAtomic = false;
6245 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6246 SyncScope::ID SSID = SyncScope::System;
6247
6248 if (Lex.getKind() == lltok::kw_atomic) {
6249 isAtomic = true;
6250 Lex.Lex();
6251 }
6252
6253 bool isVolatile = false;
6254 if (Lex.getKind() == lltok::kw_volatile) {
6255 isVolatile = true;
6256 Lex.Lex();
6257 }
6258
6259 if (ParseTypeAndValue(Val, Loc, PFS) ||
6260 ParseToken(lltok::comma, "expected ',' after store operand") ||
6261 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6262 ParseScopeAndOrdering(isAtomic, SSID, Ordering) ||
6263 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6264 return true;
6265
6266 if (!Ptr->getType()->isPointerTy())
6267 return Error(PtrLoc, "store operand must be a pointer");
6268 if (!Val->getType()->isFirstClassType())
6269 return Error(Loc, "store operand must be a first class value");
6270 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6271 return Error(Loc, "stored value and pointer type do not match");
6272 if (isAtomic && !Alignment)
6273 return Error(Loc, "atomic store must have explicit non-zero alignment");
6274 if (Ordering == AtomicOrdering::Acquire ||
6275 Ordering == AtomicOrdering::AcquireRelease)
6276 return Error(Loc, "atomic store cannot use Acquire ordering");
6277
6278 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, SSID);
6279 return AteExtraComma ? InstExtraComma : InstNormal;
6280}
6281
6282/// ParseCmpXchg
6283/// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
6284/// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
6285int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
6286 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
6287 bool AteExtraComma = false;
6288 AtomicOrdering SuccessOrdering = AtomicOrdering::NotAtomic;
6289 AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic;
6290 SyncScope::ID SSID = SyncScope::System;
6291 bool isVolatile = false;
6292 bool isWeak = false;
6293
6294 if (EatIfPresent(lltok::kw_weak))
6295 isWeak = true;
6296
6297 if (EatIfPresent(lltok::kw_volatile))
6298 isVolatile = true;
6299
6300 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6301 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
6302 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
6303 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
6304 ParseTypeAndValue(New, NewLoc, PFS) ||
6305 ParseScopeAndOrdering(true /*Always atomic*/, SSID, SuccessOrdering) ||
6306 ParseOrdering(FailureOrdering))
6307 return true;
6308
6309 if (SuccessOrdering == AtomicOrdering::Unordered ||
6310 FailureOrdering == AtomicOrdering::Unordered)
6311 return TokError("cmpxchg cannot be unordered");
6312 if (isStrongerThan(FailureOrdering, SuccessOrdering))
6313 return TokError("cmpxchg failure argument shall be no stronger than the "
6314 "success argument");
6315 if (FailureOrdering == AtomicOrdering::Release ||
6316 FailureOrdering == AtomicOrdering::AcquireRelease)
6317 return TokError(
6318 "cmpxchg failure ordering cannot include release semantics");
6319 if (!Ptr->getType()->isPointerTy())
6320 return Error(PtrLoc, "cmpxchg operand must be a pointer");
6321 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
6322 return Error(CmpLoc, "compare value and pointer type do not match");
6323 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
6324 return Error(NewLoc, "new value and pointer type do not match");
6325 if (!New->getType()->isFirstClassType())
6326 return Error(NewLoc, "cmpxchg operand must be a first class value");
6327 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
6328 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, SSID);
6329 CXI->setVolatile(isVolatile);
6330 CXI->setWeak(isWeak);
6331 Inst = CXI;
6332 return AteExtraComma ? InstExtraComma : InstNormal;
6333}
6334
6335/// ParseAtomicRMW
6336/// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
6337/// 'singlethread'? AtomicOrdering
6338int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
6339 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
6340 bool AteExtraComma = false;
6341 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6342 SyncScope::ID SSID = SyncScope::System;
6343 bool isVolatile = false;
6344 AtomicRMWInst::BinOp Operation;
6345
6346 if (EatIfPresent(lltok::kw_volatile))
6347 isVolatile = true;
6348
6349 switch (Lex.getKind()) {
6350 default: return TokError("expected binary operation in atomicrmw");
6351 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
6352 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
6353 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
6354 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
6355 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
6356 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
6357 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
6358 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
6359 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
6360 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
6361 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
6362 }
6363 Lex.Lex(); // Eat the operation.
6364
6365 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6366 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
6367 ParseTypeAndValue(Val, ValLoc, PFS) ||
6368 ParseScopeAndOrdering(true /*Always atomic*/, SSID, Ordering))
6369 return true;
6370
6371 if (Ordering == AtomicOrdering::Unordered)
6372 return TokError("atomicrmw cannot be unordered");
6373 if (!Ptr->getType()->isPointerTy())
6374 return Error(PtrLoc, "atomicrmw operand must be a pointer");
6375 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6376 return Error(ValLoc, "atomicrmw value and pointer type do not match");
6377 if (!Val->getType()->isIntegerTy())
6378 return Error(ValLoc, "atomicrmw operand must be an integer");
6379 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
6380 if (Size < 8 || (Size & (Size - 1)))
6381 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
6382 " integer");
6383
6384 AtomicRMWInst *RMWI =
6385 new AtomicRMWInst(Operation, Ptr, Val, Ordering, SSID);
6386 RMWI->setVolatile(isVolatile);
6387 Inst = RMWI;
6388 return AteExtraComma ? InstExtraComma : InstNormal;
6389}
6390
6391/// ParseFence
6392/// ::= 'fence' 'singlethread'? AtomicOrdering
6393int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6394 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6395 SyncScope::ID SSID = SyncScope::System;
6396 if (ParseScopeAndOrdering(true /*Always atomic*/, SSID, Ordering))
6397 return true;
6398
6399 if (Ordering == AtomicOrdering::Unordered)
6400 return TokError("fence cannot be unordered");
6401 if (Ordering == AtomicOrdering::Monotonic)
6402 return TokError("fence cannot be monotonic");
6403
6404 Inst = new FenceInst(Context, Ordering, SSID);
6405 return InstNormal;
6406}
6407
6408/// ParseGetElementPtr
6409/// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6410int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6411 Value *Ptr = nullptr;
6412 Value *Val = nullptr;
6413 LocTy Loc, EltLoc;
6414
6415 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6416
6417 Type *Ty = nullptr;
6418 LocTy ExplicitTypeLoc = Lex.getLoc();
6419 if (ParseType(Ty) ||
6420 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6421 ParseTypeAndValue(Ptr, Loc, PFS))
6422 return true;
6423
6424 Type *BaseType = Ptr->getType();
6425 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6426 if (!BasePointerType)
6427 return Error(Loc, "base of getelementptr must be a pointer");
6428
6429 if (Ty != BasePointerType->getElementType())
6430 return Error(ExplicitTypeLoc,
6431 "explicit pointee type doesn't match operand's pointee type");
6432
6433 SmallVector<Value*, 16> Indices;
6434 bool AteExtraComma = false;
6435 // GEP returns a vector of pointers if at least one of parameters is a vector.
6436 // All vector parameters should have the same vector width.
6437 unsigned GEPWidth = BaseType->isVectorTy() ?
6438 BaseType->getVectorNumElements() : 0;
6439
6440 while (EatIfPresent(lltok::comma)) {
6441 if (Lex.getKind() == lltok::MetadataVar) {
6442 AteExtraComma = true;
6443 break;
6444 }
6445 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6446 if (!Val->getType()->isIntOrIntVectorTy())
6447 return Error(EltLoc, "getelementptr index must be an integer");
6448
6449 if (Val->getType()->isVectorTy()) {
6450 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6451 if (GEPWidth && GEPWidth != ValNumEl)
6452 return Error(EltLoc,
6453 "getelementptr vector index has a wrong number of elements");
6454 GEPWidth = ValNumEl;
6455 }
6456 Indices.push_back(Val);
6457 }
6458
6459 SmallPtrSet<Type*, 4> Visited;
6460 if (!Indices.empty() && !Ty->isSized(&Visited))
6461 return Error(Loc, "base element of getelementptr must be sized");
6462
6463 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6464 return Error(Loc, "invalid getelementptr indices");
6465 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6466 if (InBounds)
6467 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6468 return AteExtraComma ? InstExtraComma : InstNormal;
6469}
6470
6471/// ParseExtractValue
6472/// ::= 'extractvalue' TypeAndValue (',' uint32)+
6473int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6474 Value *Val; LocTy Loc;
6475 SmallVector<unsigned, 4> Indices;
6476 bool AteExtraComma;
6477 if (ParseTypeAndValue(Val, Loc, PFS) ||
6478 ParseIndexList(Indices, AteExtraComma))
6479 return true;
6480
6481 if (!Val->getType()->isAggregateType())
6482 return Error(Loc, "extractvalue operand must be aggregate type");
6483
6484 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6485 return Error(Loc, "invalid indices for extractvalue");
6486 Inst = ExtractValueInst::Create(Val, Indices);
6487 return AteExtraComma ? InstExtraComma : InstNormal;
6488}
6489
6490/// ParseInsertValue
6491/// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6492int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6493 Value *Val0, *Val1; LocTy Loc0, Loc1;
6494 SmallVector<unsigned, 4> Indices;
6495 bool AteExtraComma;
6496 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6497 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6498 ParseTypeAndValue(Val1, Loc1, PFS) ||
6499 ParseIndexList(Indices, AteExtraComma))
6500 return true;
6501
6502 if (!Val0->getType()->isAggregateType())
6503 return Error(Loc0, "insertvalue operand must be aggregate type");
6504
6505 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6506 if (!IndexedType)
6507 return Error(Loc0, "invalid indices for insertvalue");
6508 if (IndexedType != Val1->getType())
6509 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6510 getTypeString(Val1->getType()) + "' instead of '" +
6511 getTypeString(IndexedType) + "'");
6512 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6513 return AteExtraComma ? InstExtraComma : InstNormal;
6514}
6515
6516//===----------------------------------------------------------------------===//
6517// Embedded metadata.
6518//===----------------------------------------------------------------------===//
6519
6520/// ParseMDNodeVector
6521/// ::= { Element (',' Element)* }
6522/// Element
6523/// ::= 'null' | TypeAndValue
6524bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6525 if (ParseToken(lltok::lbrace, "expected '{' here"))
6526 return true;
6527
6528 // Check for an empty list.
6529 if (EatIfPresent(lltok::rbrace))
6530 return false;
6531
6532 do {
6533 // Null is a special case since it is typeless.
6534 if (EatIfPresent(lltok::kw_null)) {
6535 Elts.push_back(nullptr);
6536 continue;
6537 }
6538
6539 Metadata *MD;
6540 if (ParseMetadata(MD, nullptr))
6541 return true;
6542 Elts.push_back(MD);
6543 } while (EatIfPresent(lltok::comma));
6544
6545 return ParseToken(lltok::rbrace, "expected end of metadata node");
6546}
6547
6548//===----------------------------------------------------------------------===//
6549// Use-list order directives.
6550//===----------------------------------------------------------------------===//
6551bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6552 SMLoc Loc) {
6553 if (V->use_empty())
6554 return Error(Loc, "value has no uses");
6555
6556 unsigned NumUses = 0;
6557 SmallDenseMap<const Use *, unsigned, 16> Order;
6558 for (const Use &U : V->uses()) {
6559 if (++NumUses > Indexes.size())
6560 break;
6561 Order[&U] = Indexes[NumUses - 1];
6562 }
6563 if (NumUses < 2)
6564 return Error(Loc, "value only has one use");
6565 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6566 return Error(Loc, "wrong number of indexes, expected " +
6567 Twine(std::distance(V->use_begin(), V->use_end())));
6568
6569 V->sortUseList([&](const Use &L, const Use &R) {
6570 return Order.lookup(&L) < Order.lookup(&R);
6571 });
6572 return false;
6573}
6574
6575/// ParseUseListOrderIndexes
6576/// ::= '{' uint32 (',' uint32)+ '}'
6577bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6578 SMLoc Loc = Lex.getLoc();
6579 if (ParseToken(lltok::lbrace, "expected '{' here"))
6580 return true;
6581 if (Lex.getKind() == lltok::rbrace)
6582 return Lex.Error("expected non-empty list of uselistorder indexes");
6583
6584 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6585 // indexes should be distinct numbers in the range [0, size-1], and should
6586 // not be in order.
6587 unsigned Offset = 0;
6588 unsigned Max = 0;
6589 bool IsOrdered = true;
6590 assert(Indexes.empty() && "Expected empty order vector")((Indexes.empty() && "Expected empty order vector") ?
static_cast<void> (0) : __assert_fail ("Indexes.empty() && \"Expected empty order vector\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 6590, __PRETTY_FUNCTION__))
;
6591 do {
6592 unsigned Index;
6593 if (ParseUInt32(Index))
6594 return true;
6595
6596 // Update consistency checks.
6597 Offset += Index - Indexes.size();
6598 Max = std::max(Max, Index);
6599 IsOrdered &= Index == Indexes.size();
6600
6601 Indexes.push_back(Index);
6602 } while (EatIfPresent(lltok::comma));
6603
6604 if (ParseToken(lltok::rbrace, "expected '}' here"))
6605 return true;
6606
6607 if (Indexes.size() < 2)
6608 return Error(Loc, "expected >= 2 uselistorder indexes");
6609 if (Offset != 0 || Max >= Indexes.size())
6610 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6611 if (IsOrdered)
6612 return Error(Loc, "expected uselistorder indexes to change the order");
6613
6614 return false;
6615}
6616
6617/// ParseUseListOrder
6618/// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6619bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6620 SMLoc Loc = Lex.getLoc();
6621 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6622 return true;
6623
6624 Value *V;
6625 SmallVector<unsigned, 16> Indexes;
6626 if (ParseTypeAndValue(V, PFS) ||
6627 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6628 ParseUseListOrderIndexes(Indexes))
6629 return true;
6630
6631 return sortUseListOrder(V, Indexes, Loc);
6632}
6633
6634/// ParseUseListOrderBB
6635/// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6636bool LLParser::ParseUseListOrderBB() {
6637 assert(Lex.getKind() == lltok::kw_uselistorder_bb)((Lex.getKind() == lltok::kw_uselistorder_bb) ? static_cast<
void> (0) : __assert_fail ("Lex.getKind() == lltok::kw_uselistorder_bb"
, "/build/llvm-toolchain-snapshot-6.0~svn318211/lib/AsmParser/LLParser.cpp"
, 6637, __PRETTY_FUNCTION__))
;
6638 SMLoc Loc = Lex.getLoc();
6639 Lex.Lex();
6640
6641 ValID Fn, Label;
6642 SmallVector<unsigned, 16> Indexes;
6643 if (ParseValID(Fn) ||
6644 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6645 ParseValID(Label) ||
6646 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6647 ParseUseListOrderIndexes(Indexes))
6648 return true;
6649
6650 // Check the function.
6651 GlobalValue *GV;
6652 if (Fn.Kind == ValID::t_GlobalName)
6653 GV = M->getNamedValue(Fn.StrVal);
6654 else if (Fn.Kind == ValID::t_GlobalID)
6655 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6656 else
6657 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6658 if (!GV)
6659 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6660 auto *F = dyn_cast<Function>(GV);
6661 if (!F)
6662 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6663 if (F->isDeclaration())
6664 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6665
6666 // Check the basic block.
6667 if (Label.Kind == ValID::t_LocalID)
6668 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6669 if (Label.Kind != ValID::t_LocalName)
6670 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6671 Value *V = F->getValueSymbolTable()->lookup(Label.StrVal);
6672 if (!V)
6673 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6674 if (!isa<BasicBlock>(V))
6675 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6676
6677 return sortUseListOrder(V, Indexes, Loc);
6678}

/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h

1//===-- llvm/ADT/APSInt.h - Arbitrary Precision Signed Int -----*- C++ -*--===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the APSInt class, which is a simple class that
11// represents an arbitrary sized integer that knows its signedness.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_ADT_APSINT_H
16#define LLVM_ADT_APSINT_H
17
18#include "llvm/ADT/APInt.h"
19
20namespace llvm {
21
22class LLVM_NODISCARD[[clang::warn_unused_result]] APSInt : public APInt {
23 bool IsUnsigned;
24
25public:
26 /// Default constructor that creates an uninitialized APInt.
27 explicit APSInt() : IsUnsigned(false) {}
28
29 /// APSInt ctor - Create an APSInt with the specified width, default to
30 /// unsigned.
31 explicit APSInt(uint32_t BitWidth, bool isUnsigned = true)
32 : APInt(BitWidth, 0), IsUnsigned(isUnsigned) {}
33
34 explicit APSInt(APInt I, bool isUnsigned = true)
35 : APInt(std::move(I)), IsUnsigned(isUnsigned) {}
36
37 /// Construct an APSInt from a string representation.
38 ///
39 /// This constructor interprets the string \p Str using the radix of 10.
40 /// The interpretation stops at the end of the string. The bit width of the
41 /// constructed APSInt is determined automatically.
42 ///
43 /// \param Str the string to be interpreted.
44 explicit APSInt(StringRef Str);
45
46 APSInt &operator=(APInt RHS) {
47 // Retain our current sign.
48 APInt::operator=(std::move(RHS));
49 return *this;
50 }
51
52 APSInt &operator=(uint64_t RHS) {
53 // Retain our current sign.
54 APInt::operator=(RHS);
55 return *this;
56 }
57
58 // Query sign information.
59 bool isSigned() const { return !IsUnsigned; }
14
Assuming the condition is false
60 bool isUnsigned() const { return IsUnsigned; }
61 void setIsUnsigned(bool Val) { IsUnsigned = Val; }
62 void setIsSigned(bool Val) { IsUnsigned = !Val; }
63
64 /// toString - Append this APSInt to the specified SmallString.
65 void toString(SmallVectorImpl<char> &Str, unsigned Radix = 10) const {
66 APInt::toString(Str, Radix, isSigned());
67 }
68 /// toString - Converts an APInt to a std::string. This is an inefficient
69 /// method; you should prefer passing in a SmallString instead.
70 std::string toString(unsigned Radix) const {
71 return APInt::toString(Radix, isSigned());
72 }
73 using APInt::toString;
74
75 /// \brief Get the correctly-extended \c int64_t value.
76 int64_t getExtValue() const {
77 assert(getMinSignedBits() <= 64 && "Too many bits for int64_t")((getMinSignedBits() <= 64 && "Too many bits for int64_t"
) ? static_cast<void> (0) : __assert_fail ("getMinSignedBits() <= 64 && \"Too many bits for int64_t\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 77, __PRETTY_FUNCTION__))
;
78 return isSigned() ? getSExtValue() : getZExtValue();
79 }
80
81 APSInt trunc(uint32_t width) const {
82 return APSInt(APInt::trunc(width), IsUnsigned);
83 }
84
85 APSInt extend(uint32_t width) const {
86 if (IsUnsigned)
87 return APSInt(zext(width), IsUnsigned);
88 else
89 return APSInt(sext(width), IsUnsigned);
90 }
91
92 APSInt extOrTrunc(uint32_t width) const {
93 if (IsUnsigned)
94 return APSInt(zextOrTrunc(width), IsUnsigned);
95 else
96 return APSInt(sextOrTrunc(width), IsUnsigned);
97 }
98
99 const APSInt &operator%=(const APSInt &RHS) {
100 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 100, __PRETTY_FUNCTION__))
;
101 if (IsUnsigned)
102 *this = urem(RHS);
103 else
104 *this = srem(RHS);
105 return *this;
106 }
107 const APSInt &operator/=(const APSInt &RHS) {
108 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 108, __PRETTY_FUNCTION__))
;
109 if (IsUnsigned)
110 *this = udiv(RHS);
111 else
112 *this = sdiv(RHS);
113 return *this;
114 }
115 APSInt operator%(const APSInt &RHS) const {
116 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 116, __PRETTY_FUNCTION__))
;
117 return IsUnsigned ? APSInt(urem(RHS), true) : APSInt(srem(RHS), false);
118 }
119 APSInt operator/(const APSInt &RHS) const {
120 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 120, __PRETTY_FUNCTION__))
;
121 return IsUnsigned ? APSInt(udiv(RHS), true) : APSInt(sdiv(RHS), false);
122 }
123
124 APSInt operator>>(unsigned Amt) const {
125 return IsUnsigned ? APSInt(lshr(Amt), true) : APSInt(ashr(Amt), false);
126 }
127 APSInt& operator>>=(unsigned Amt) {
128 if (IsUnsigned)
129 lshrInPlace(Amt);
130 else
131 ashrInPlace(Amt);
132 return *this;
133 }
134
135 inline bool operator<(const APSInt& RHS) const {
136 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 136, __PRETTY_FUNCTION__))
;
137 return IsUnsigned ? ult(RHS) : slt(RHS);
138 }
139 inline bool operator>(const APSInt& RHS) const {
140 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 140, __PRETTY_FUNCTION__))
;
141 return IsUnsigned ? ugt(RHS) : sgt(RHS);
142 }
143 inline bool operator<=(const APSInt& RHS) const {
144 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 144, __PRETTY_FUNCTION__))
;
145 return IsUnsigned ? ule(RHS) : sle(RHS);
146 }
147 inline bool operator>=(const APSInt& RHS) const {
148 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 148, __PRETTY_FUNCTION__))
;
149 return IsUnsigned ? uge(RHS) : sge(RHS);
150 }
151 inline bool operator==(const APSInt& RHS) const {
152 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 152, __PRETTY_FUNCTION__))
;
153 return eq(RHS);
154 }
155 inline bool operator!=(const APSInt& RHS) const {
156 return !((*this) == RHS);
157 }
158
159 bool operator==(int64_t RHS) const {
160 return compareValues(*this, get(RHS)) == 0;
161 }
162 bool operator!=(int64_t RHS) const {
163 return compareValues(*this, get(RHS)) != 0;
164 }
165 bool operator<=(int64_t RHS) const {
166 return compareValues(*this, get(RHS)) <= 0;
167 }
168 bool operator>=(int64_t RHS) const {
169 return compareValues(*this, get(RHS)) >= 0;
170 }
171 bool operator<(int64_t RHS) const {
172 return compareValues(*this, get(RHS)) < 0;
173 }
174 bool operator>(int64_t RHS) const {
175 return compareValues(*this, get(RHS)) > 0;
176 }
177
178 // The remaining operators just wrap the logic of APInt, but retain the
179 // signedness information.
180
181 APSInt operator<<(unsigned Bits) const {
182 return APSInt(static_cast<const APInt&>(*this) << Bits, IsUnsigned);
183 }
184 APSInt& operator<<=(unsigned Amt) {
185 static_cast<APInt&>(*this) <<= Amt;
186 return *this;
187 }
188
189 APSInt& operator++() {
190 ++(static_cast<APInt&>(*this));
191 return *this;
192 }
193 APSInt& operator--() {
194 --(static_cast<APInt&>(*this));
195 return *this;
196 }
197 APSInt operator++(int) {
198 return APSInt(++static_cast<APInt&>(*this), IsUnsigned);
199 }
200 APSInt operator--(int) {
201 return APSInt(--static_cast<APInt&>(*this), IsUnsigned);
202 }
203 APSInt operator-() const {
204 return APSInt(-static_cast<const APInt&>(*this), IsUnsigned);
205 }
206 APSInt& operator+=(const APSInt& RHS) {
207 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 207, __PRETTY_FUNCTION__))
;
208 static_cast<APInt&>(*this) += RHS;
209 return *this;
210 }
211 APSInt& operator-=(const APSInt& RHS) {
212 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 212, __PRETTY_FUNCTION__))
;
213 static_cast<APInt&>(*this) -= RHS;
214 return *this;
215 }
216 APSInt& operator*=(const APSInt& RHS) {
217 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 217, __PRETTY_FUNCTION__))
;
218 static_cast<APInt&>(*this) *= RHS;
219 return *this;
220 }
221 APSInt& operator&=(const APSInt& RHS) {
222 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 222, __PRETTY_FUNCTION__))
;
223 static_cast<APInt&>(*this) &= RHS;
224 return *this;
225 }
226 APSInt& operator|=(const APSInt& RHS) {
227 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 227, __PRETTY_FUNCTION__))
;
228 static_cast<APInt&>(*this) |= RHS;
229 return *this;
230 }
231 APSInt& operator^=(const APSInt& RHS) {
232 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 232, __PRETTY_FUNCTION__))
;
233 static_cast<APInt&>(*this) ^= RHS;
234 return *this;
235 }
236
237 APSInt operator&(const APSInt& RHS) const {
238 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 238, __PRETTY_FUNCTION__))
;
239 return APSInt(static_cast<const APInt&>(*this) & RHS, IsUnsigned);
240 }
241
242 APSInt operator|(const APSInt& RHS) const {
243 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 243, __PRETTY_FUNCTION__))
;
244 return APSInt(static_cast<const APInt&>(*this) | RHS, IsUnsigned);
245 }
246
247 APSInt operator^(const APSInt &RHS) const {
248 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 248, __PRETTY_FUNCTION__))
;
249 return APSInt(static_cast<const APInt&>(*this) ^ RHS, IsUnsigned);
250 }
251
252 APSInt operator*(const APSInt& RHS) const {
253 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 253, __PRETTY_FUNCTION__))
;
254 return APSInt(static_cast<const APInt&>(*this) * RHS, IsUnsigned);
255 }
256 APSInt operator+(const APSInt& RHS) const {
257 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 257, __PRETTY_FUNCTION__))
;
258 return APSInt(static_cast<const APInt&>(*this) + RHS, IsUnsigned);
259 }
260 APSInt operator-(const APSInt& RHS) const {
261 assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!")((IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!"
) ? static_cast<void> (0) : __assert_fail ("IsUnsigned == RHS.IsUnsigned && \"Signedness mismatch!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 261, __PRETTY_FUNCTION__))
;
262 return APSInt(static_cast<const APInt&>(*this) - RHS, IsUnsigned);
263 }
264 APSInt operator~() const {
265 return APSInt(~static_cast<const APInt&>(*this), IsUnsigned);
266 }
267
268 /// getMaxValue - Return the APSInt representing the maximum integer value
269 /// with the given bit width and signedness.
270 static APSInt getMaxValue(uint32_t numBits, bool Unsigned) {
271 return APSInt(Unsigned ? APInt::getMaxValue(numBits)
272 : APInt::getSignedMaxValue(numBits), Unsigned);
273 }
274
275 /// getMinValue - Return the APSInt representing the minimum integer value
276 /// with the given bit width and signedness.
277 static APSInt getMinValue(uint32_t numBits, bool Unsigned) {
278 return APSInt(Unsigned ? APInt::getMinValue(numBits)
279 : APInt::getSignedMinValue(numBits), Unsigned);
280 }
281
282 /// \brief Determine if two APSInts have the same value, zero- or
283 /// sign-extending as needed.
284 static bool isSameValue(const APSInt &I1, const APSInt &I2) {
285 return !compareValues(I1, I2);
286 }
287
288 /// \brief Compare underlying values of two numbers.
289 static int compareValues(const APSInt &I1, const APSInt &I2) {
290 if (I1.getBitWidth() == I2.getBitWidth() && I1.isSigned() == I2.isSigned())
291 return I1.IsUnsigned ? I1.compare(I2) : I1.compareSigned(I2);
292
293 // Check for a bit-width mismatch.
294 if (I1.getBitWidth() > I2.getBitWidth())
295 return compareValues(I1, I2.extend(I1.getBitWidth()));
296 if (I2.getBitWidth() > I1.getBitWidth())
297 return compareValues(I1.extend(I2.getBitWidth()), I2);
298
299 // We have a signedness mismatch. Check for negative values and do an
300 // unsigned compare if both are positive.
301 if (I1.isSigned()) {
302 assert(!I2.isSigned() && "Expected signed mismatch")((!I2.isSigned() && "Expected signed mismatch") ? static_cast
<void> (0) : __assert_fail ("!I2.isSigned() && \"Expected signed mismatch\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 302, __PRETTY_FUNCTION__))
;
303 if (I1.isNegative())
304 return -1;
305 } else {
306 assert(I2.isSigned() && "Expected signed mismatch")((I2.isSigned() && "Expected signed mismatch") ? static_cast
<void> (0) : __assert_fail ("I2.isSigned() && \"Expected signed mismatch\""
, "/build/llvm-toolchain-snapshot-6.0~svn318211/include/llvm/ADT/APSInt.h"
, 306, __PRETTY_FUNCTION__))
;
307 if (I2.isNegative())
308 return 1;
309 }
310
311 return I1.compare(I2);
312 }
313
314 static APSInt get(int64_t X) { return APSInt(APInt(64, X), false); }
315 static APSInt getUnsigned(uint64_t X) { return APSInt(APInt(64, X), true); }
316
317 /// Profile - Used to insert APSInt objects, or objects that contain APSInt
318 /// objects, into FoldingSets.
319 void Profile(FoldingSetNodeID& ID) const;
320};
321
322inline bool operator==(int64_t V1, const APSInt &V2) { return V2 == V1; }
323inline bool operator!=(int64_t V1, const APSInt &V2) { return V2 != V1; }
324inline bool operator<=(int64_t V1, const APSInt &V2) { return V2 >= V1; }
325inline bool operator>=(int64_t V1, const APSInt &V2) { return V2 <= V1; }
326inline bool operator<(int64_t V1, const APSInt &V2) { return V2 > V1; }
327inline bool operator>(int64_t V1, const APSInt &V2) { return V2 < V1; }
328
329inline raw_ostream &operator<<(raw_ostream &OS, const APSInt &I) {
330 I.print(OS, I.isSigned());
331 return OS;
332}
333
334} // end namespace llvm
335
336#endif