Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 1799, column 3
2nd function call argument is an uninitialized value

Annotated Source Code

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~svn316259/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~svn316259/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~svn316259/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~svn316259/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~svn316259/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~svn316259/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~svn316259/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~svn316259/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 OptionalVisibility OptionalDLLStorageClass
487/// ... -> global variable
488/// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
489/// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
490/// ... -> global variable
491bool LLParser::ParseUnnamedGlobal() {
492 unsigned VarID = NumberedVals.size();
493 std::string Name;
494 LocTy NameLoc = Lex.getLoc();
495
496 // Handle the GlobalID form.
497 if (Lex.getKind() == lltok::GlobalID) {
498 if (Lex.getUIntVal() != VarID)
499 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
500 Twine(VarID) + "'");
501 Lex.Lex(); // eat GlobalID;
502
503 if (ParseToken(lltok::equal, "expected '=' after name"))
504 return true;
505 }
506
507 bool HasLinkage;
508 unsigned Linkage, Visibility, DLLStorageClass;
509 GlobalVariable::ThreadLocalMode TLM;
510 GlobalVariable::UnnamedAddr UnnamedAddr;
511 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
512 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
513 return true;
514
515 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
516 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
517 DLLStorageClass, TLM, UnnamedAddr);
518
519 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
520 DLLStorageClass, TLM, UnnamedAddr);
521}
522
523/// ParseNamedGlobal:
524/// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
525/// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
526/// ... -> global variable
527bool LLParser::ParseNamedGlobal() {
528 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~svn316259/lib/AsmParser/LLParser.cpp"
, 528, __PRETTY_FUNCTION__))
;
529 LocTy NameLoc = Lex.getLoc();
530 std::string Name = Lex.getStrVal();
531 Lex.Lex();
532
533 bool HasLinkage;
534 unsigned Linkage, Visibility, DLLStorageClass;
535 GlobalVariable::ThreadLocalMode TLM;
536 GlobalVariable::UnnamedAddr UnnamedAddr;
537 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
538 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
539 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
540 return true;
541
542 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
543 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
544 DLLStorageClass, TLM, UnnamedAddr);
545
546 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
547 DLLStorageClass, TLM, UnnamedAddr);
548}
549
550bool LLParser::parseComdat() {
551 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~svn316259/lib/AsmParser/LLParser.cpp"
, 551, __PRETTY_FUNCTION__))
;
552 std::string Name = Lex.getStrVal();
553 LocTy NameLoc = Lex.getLoc();
554 Lex.Lex();
555
556 if (ParseToken(lltok::equal, "expected '=' here"))
557 return true;
558
559 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
560 return TokError("expected comdat type");
561
562 Comdat::SelectionKind SK;
563 switch (Lex.getKind()) {
564 default:
565 return TokError("unknown selection kind");
566 case lltok::kw_any:
567 SK = Comdat::Any;
568 break;
569 case lltok::kw_exactmatch:
570 SK = Comdat::ExactMatch;
571 break;
572 case lltok::kw_largest:
573 SK = Comdat::Largest;
574 break;
575 case lltok::kw_noduplicates:
576 SK = Comdat::NoDuplicates;
577 break;
578 case lltok::kw_samesize:
579 SK = Comdat::SameSize;
580 break;
581 }
582 Lex.Lex();
583
584 // See if the comdat was forward referenced, if so, use the comdat.
585 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
586 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
587 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
588 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
589
590 Comdat *C;
591 if (I != ComdatSymTab.end())
592 C = &I->second;
593 else
594 C = M->getOrInsertComdat(Name);
595 C->setSelectionKind(SK);
596
597 return false;
598}
599
600// MDString:
601// ::= '!' STRINGCONSTANT
602bool LLParser::ParseMDString(MDString *&Result) {
603 std::string Str;
604 if (ParseStringConstant(Str)) return true;
605 Result = MDString::get(Context, Str);
606 return false;
607}
608
609// MDNode:
610// ::= '!' MDNodeNumber
611bool LLParser::ParseMDNodeID(MDNode *&Result) {
612 // !{ ..., !42, ... }
613 LocTy IDLoc = Lex.getLoc();
614 unsigned MID = 0;
615 if (ParseUInt32(MID))
616 return true;
617
618 // If not a forward reference, just return it now.
619 if (NumberedMetadata.count(MID)) {
620 Result = NumberedMetadata[MID];
621 return false;
622 }
623
624 // Otherwise, create MDNode forward reference.
625 auto &FwdRef = ForwardRefMDNodes[MID];
626 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
627
628 Result = FwdRef.first.get();
629 NumberedMetadata[MID].reset(Result);
630 return false;
631}
632
633/// ParseNamedMetadata:
634/// !foo = !{ !1, !2 }
635bool LLParser::ParseNamedMetadata() {
636 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~svn316259/lib/AsmParser/LLParser.cpp"
, 636, __PRETTY_FUNCTION__))
;
637 std::string Name = Lex.getStrVal();
638 Lex.Lex();
639
640 if (ParseToken(lltok::equal, "expected '=' here") ||
641 ParseToken(lltok::exclaim, "Expected '!' here") ||
642 ParseToken(lltok::lbrace, "Expected '{' here"))
643 return true;
644
645 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
646 if (Lex.getKind() != lltok::rbrace)
647 do {
648 MDNode *N = nullptr;
649 // Parse DIExpressions inline as a special case. They are still MDNodes,
650 // so they can still appear in named metadata. Remove this logic if they
651 // become plain Metadata.
652 if (Lex.getKind() == lltok::MetadataVar &&
653 Lex.getStrVal() == "DIExpression") {
654 if (ParseDIExpression(N, /*IsDistinct=*/false))
655 return true;
656 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
657 ParseMDNodeID(N)) {
658 return true;
659 }
660 NMD->addOperand(N);
661 } while (EatIfPresent(lltok::comma));
662
663 return ParseToken(lltok::rbrace, "expected end of metadata node");
664}
665
666/// ParseStandaloneMetadata:
667/// !42 = !{...}
668bool LLParser::ParseStandaloneMetadata() {
669 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~svn316259/lib/AsmParser/LLParser.cpp"
, 669, __PRETTY_FUNCTION__))
;
670 Lex.Lex();
671 unsigned MetadataID = 0;
672
673 MDNode *Init;
674 if (ParseUInt32(MetadataID) ||
675 ParseToken(lltok::equal, "expected '=' here"))
676 return true;
677
678 // Detect common error, from old metadata syntax.
679 if (Lex.getKind() == lltok::Type)
680 return TokError("unexpected type in metadata definition");
681
682 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
683 if (Lex.getKind() == lltok::MetadataVar) {
684 if (ParseSpecializedMDNode(Init, IsDistinct))
685 return true;
686 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
687 ParseMDTuple(Init, IsDistinct))
688 return true;
689
690 // See if this was forward referenced, if so, handle it.
691 auto FI = ForwardRefMDNodes.find(MetadataID);
692 if (FI != ForwardRefMDNodes.end()) {
693 FI->second.first->replaceAllUsesWith(Init);
694 ForwardRefMDNodes.erase(FI);
695
696 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~svn316259/lib/AsmParser/LLParser.cpp"
, 696, __PRETTY_FUNCTION__))
;
697 } else {
698 if (NumberedMetadata.count(MetadataID))
699 return TokError("Metadata id is already used");
700 NumberedMetadata[MetadataID].reset(Init);
701 }
702
703 return false;
704}
705
706static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
707 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
708 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
709}
710
711/// parseIndirectSymbol:
712/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
713/// OptionalDLLStorageClass OptionalThreadLocal
714/// OptionalUnnamedAddr 'alias|ifunc' IndirectSymbol
715///
716/// IndirectSymbol
717/// ::= TypeAndValue
718///
719/// Everything through OptionalUnnamedAddr has already been parsed.
720///
721bool LLParser::parseIndirectSymbol(
722 const std::string &Name, LocTy NameLoc, unsigned L, unsigned Visibility,
723 unsigned DLLStorageClass, GlobalVariable::ThreadLocalMode TLM,
724 GlobalVariable::UnnamedAddr UnnamedAddr) {
725 bool IsAlias;
726 if (Lex.getKind() == lltok::kw_alias)
727 IsAlias = true;
728 else if (Lex.getKind() == lltok::kw_ifunc)
729 IsAlias = false;
730 else
731 llvm_unreachable("Not an alias or ifunc!")::llvm::llvm_unreachable_internal("Not an alias or ifunc!", "/build/llvm-toolchain-snapshot-6.0~svn316259/lib/AsmParser/LLParser.cpp"
, 731)
;
732 Lex.Lex();
733
734 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
735
736 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
737 return Error(NameLoc, "invalid linkage type for alias");
738
739 if (!isValidVisibilityForLinkage(Visibility, L))
740 return Error(NameLoc,
741 "symbol with local linkage must have default visibility");
742
743 Type *Ty;
744 LocTy ExplicitTypeLoc = Lex.getLoc();
745 if (ParseType(Ty) ||
746 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
747 return true;
748
749 Constant *Aliasee;
750 LocTy AliaseeLoc = Lex.getLoc();
751 if (Lex.getKind() != lltok::kw_bitcast &&
752 Lex.getKind() != lltok::kw_getelementptr &&
753 Lex.getKind() != lltok::kw_addrspacecast &&
754 Lex.getKind() != lltok::kw_inttoptr) {
755 if (ParseGlobalTypeAndValue(Aliasee))
756 return true;
757 } else {
758 // The bitcast dest type is not present, it is implied by the dest type.
759 ValID ID;
760 if (ParseValID(ID))
761 return true;
762 if (ID.Kind != ValID::t_Constant)
763 return Error(AliaseeLoc, "invalid aliasee");
764 Aliasee = ID.ConstantVal;
765 }
766
767 Type *AliaseeType = Aliasee->getType();
768 auto *PTy = dyn_cast<PointerType>(AliaseeType);
769 if (!PTy)
770 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
771 unsigned AddrSpace = PTy->getAddressSpace();
772
773 if (IsAlias && Ty != PTy->getElementType())
774 return Error(
775 ExplicitTypeLoc,
776 "explicit pointee type doesn't match operand's pointee type");
777
778 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
779 return Error(
780 ExplicitTypeLoc,
781 "explicit pointee type should be a function type");
782
783 GlobalValue *GVal = nullptr;
784
785 // See if the alias was forward referenced, if so, prepare to replace the
786 // forward reference.
787 if (!Name.empty()) {
788 GVal = M->getNamedValue(Name);
789 if (GVal) {
790 if (!ForwardRefVals.erase(Name))
791 return Error(NameLoc, "redefinition of global '@" + Name + "'");
792 }
793 } else {
794 auto I = ForwardRefValIDs.find(NumberedVals.size());
795 if (I != ForwardRefValIDs.end()) {
796 GVal = I->second.first;
797 ForwardRefValIDs.erase(I);
798 }
799 }
800
801 // Okay, create the alias but do not insert it into the module yet.
802 std::unique_ptr<GlobalIndirectSymbol> GA;
803 if (IsAlias)
804 GA.reset(GlobalAlias::create(Ty, AddrSpace,
805 (GlobalValue::LinkageTypes)Linkage, Name,
806 Aliasee, /*Parent*/ nullptr));
807 else
808 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
809 (GlobalValue::LinkageTypes)Linkage, Name,
810 Aliasee, /*Parent*/ nullptr));
811 GA->setThreadLocalMode(TLM);
812 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
813 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
814 GA->setUnnamedAddr(UnnamedAddr);
815
816 if (Name.empty())
817 NumberedVals.push_back(GA.get());
818
819 if (GVal) {
820 // Verify that types agree.
821 if (GVal->getType() != GA->getType())
822 return Error(
823 ExplicitTypeLoc,
824 "forward reference and definition of alias have different types");
825
826 // If they agree, just RAUW the old value with the alias and remove the
827 // forward ref info.
828 GVal->replaceAllUsesWith(GA.get());
829 GVal->eraseFromParent();
830 }
831
832 // Insert into the module, we know its name won't collide now.
833 if (IsAlias)
834 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
835 else
836 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
837 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~svn316259/lib/AsmParser/LLParser.cpp"
, 837, __PRETTY_FUNCTION__))
;
838
839 // The module owns this now
840 GA.release();
841
842 return false;
843}
844
845/// ParseGlobal
846/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
847/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
848/// OptionalExternallyInitialized GlobalType Type Const OptionalAttrs
849/// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
850/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
851/// OptionalExternallyInitialized GlobalType Type Const OptionalAttrs
852///
853/// Everything up to and including OptionalUnnamedAddr has been parsed
854/// already.
855///
856bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
857 unsigned Linkage, bool HasLinkage,
858 unsigned Visibility, unsigned DLLStorageClass,
859 GlobalVariable::ThreadLocalMode TLM,
860 GlobalVariable::UnnamedAddr UnnamedAddr) {
861 if (!isValidVisibilityForLinkage(Visibility, Linkage))
862 return Error(NameLoc,
863 "symbol with local linkage must have default visibility");
864
865 unsigned AddrSpace;
866 bool IsConstant, IsExternallyInitialized;
867 LocTy IsExternallyInitializedLoc;
868 LocTy TyLoc;
869
870 Type *Ty = nullptr;
871 if (ParseOptionalAddrSpace(AddrSpace) ||
872 ParseOptionalToken(lltok::kw_externally_initialized,
873 IsExternallyInitialized,
874 &IsExternallyInitializedLoc) ||
875 ParseGlobalType(IsConstant) ||
876 ParseType(Ty, TyLoc))
877 return true;
878
879 // If the linkage is specified and is external, then no initializer is
880 // present.
881 Constant *Init = nullptr;
882 if (!HasLinkage ||
883 !GlobalValue::isValidDeclarationLinkage(
884 (GlobalValue::LinkageTypes)Linkage)) {
885 if (ParseGlobalValue(Ty, Init))
886 return true;
887 }
888
889 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
890 return Error(TyLoc, "invalid type for global variable");
891
892 GlobalValue *GVal = nullptr;
893
894 // See if the global was forward referenced, if so, use the global.
895 if (!Name.empty()) {
896 GVal = M->getNamedValue(Name);
897 if (GVal) {
898 if (!ForwardRefVals.erase(Name))
899 return Error(NameLoc, "redefinition of global '@" + Name + "'");
900 }
901 } else {
902 auto I = ForwardRefValIDs.find(NumberedVals.size());
903 if (I != ForwardRefValIDs.end()) {
904 GVal = I->second.first;
905 ForwardRefValIDs.erase(I);
906 }
907 }
908
909 GlobalVariable *GV;
910 if (!GVal) {
911 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
912 Name, nullptr, GlobalVariable::NotThreadLocal,
913 AddrSpace);
914 } else {
915 if (GVal->getValueType() != Ty)
916 return Error(TyLoc,
917 "forward reference and definition of global have different types");
918
919 GV = cast<GlobalVariable>(GVal);
920
921 // Move the forward-reference to the correct spot in the module.
922 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
923 }
924
925 if (Name.empty())
926 NumberedVals.push_back(GV);
927
928 // Set the parsed properties on the global.
929 if (Init)
930 GV->setInitializer(Init);
931 GV->setConstant(IsConstant);
932 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
933 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
934 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
935 GV->setExternallyInitialized(IsExternallyInitialized);
936 GV->setThreadLocalMode(TLM);
937 GV->setUnnamedAddr(UnnamedAddr);
938
939 // Parse attributes on the global.
940 while (Lex.getKind() == lltok::comma) {
941 Lex.Lex();
942
943 if (Lex.getKind() == lltok::kw_section) {
944 Lex.Lex();
945 GV->setSection(Lex.getStrVal());
946 if (ParseToken(lltok::StringConstant, "expected global section string"))
947 return true;
948 } else if (Lex.getKind() == lltok::kw_align) {
949 unsigned Alignment;
950 if (ParseOptionalAlignment(Alignment)) return true;
951 GV->setAlignment(Alignment);
952 } else if (Lex.getKind() == lltok::MetadataVar) {
953 if (ParseGlobalObjectMetadataAttachment(*GV))
954 return true;
955 } else {
956 Comdat *C;
957 if (parseOptionalComdat(Name, C))
958 return true;
959 if (C)
960 GV->setComdat(C);
961 else
962 return TokError("unknown global variable property!");
963 }
964 }
965
966 AttrBuilder Attrs;
967 LocTy BuiltinLoc;
968 std::vector<unsigned> FwdRefAttrGrps;
969 if (ParseFnAttributeValuePairs(Attrs, FwdRefAttrGrps, false, BuiltinLoc))
970 return true;
971 if (Attrs.hasAttributes() || !FwdRefAttrGrps.empty()) {
972 GV->setAttributes(AttributeSet::get(Context, Attrs));
973 ForwardRefAttrGroups[GV] = FwdRefAttrGrps;
974 }
975
976 return false;
977}
978
979/// ParseUnnamedAttrGrp
980/// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
981bool LLParser::ParseUnnamedAttrGrp() {
982 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~svn316259/lib/AsmParser/LLParser.cpp"
, 982, __PRETTY_FUNCTION__))
;
983 LocTy AttrGrpLoc = Lex.getLoc();
984 Lex.Lex();
985
986 if (Lex.getKind() != lltok::AttrGrpID)
987 return TokError("expected attribute group id");
988
989 unsigned VarID = Lex.getUIntVal();
990 std::vector<unsigned> unused;
991 LocTy BuiltinLoc;
992 Lex.Lex();
993
994 if (ParseToken(lltok::equal, "expected '=' here") ||
995 ParseToken(lltok::lbrace, "expected '{' here") ||
996 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
997 BuiltinLoc) ||
998 ParseToken(lltok::rbrace, "expected end of attribute group"))
999 return true;
1000
1001 if (!NumberedAttrBuilders[VarID].hasAttributes())
1002 return Error(AttrGrpLoc, "attribute group has no attributes");
1003
1004 return false;
1005}
1006
1007/// ParseFnAttributeValuePairs
1008/// ::= <attr> | <attr> '=' <value>
1009bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
1010 std::vector<unsigned> &FwdRefAttrGrps,
1011 bool inAttrGrp, LocTy &BuiltinLoc) {
1012 bool HaveError = false;
1013
1014 B.clear();
1015
1016 while (true) {
1017 lltok::Kind Token = Lex.getKind();
1018 if (Token == lltok::kw_builtin)
1019 BuiltinLoc = Lex.getLoc();
1020 switch (Token) {
1021 default:
1022 if (!inAttrGrp) return HaveError;
1023 return Error(Lex.getLoc(), "unterminated attribute group");
1024 case lltok::rbrace:
1025 // Finished.
1026 return false;
1027
1028 case lltok::AttrGrpID: {
1029 // Allow a function to reference an attribute group:
1030 //
1031 // define void @foo() #1 { ... }
1032 if (inAttrGrp)
1033 HaveError |=
1034 Error(Lex.getLoc(),
1035 "cannot have an attribute group reference in an attribute group");
1036
1037 unsigned AttrGrpNum = Lex.getUIntVal();
1038 if (inAttrGrp) break;
1039
1040 // Save the reference to the attribute group. We'll fill it in later.
1041 FwdRefAttrGrps.push_back(AttrGrpNum);
1042 break;
1043 }
1044 // Target-dependent attributes:
1045 case lltok::StringConstant: {
1046 if (ParseStringAttribute(B))
1047 return true;
1048 continue;
1049 }
1050
1051 // Target-independent attributes:
1052 case lltok::kw_align: {
1053 // As a hack, we allow function alignment to be initially parsed as an
1054 // attribute on a function declaration/definition or added to an attribute
1055 // group and later moved to the alignment field.
1056 unsigned Alignment;
1057 if (inAttrGrp) {
1058 Lex.Lex();
1059 if (ParseToken(lltok::equal, "expected '=' here") ||
1060 ParseUInt32(Alignment))
1061 return true;
1062 } else {
1063 if (ParseOptionalAlignment(Alignment))
1064 return true;
1065 }
1066 B.addAlignmentAttr(Alignment);
1067 continue;
1068 }
1069 case lltok::kw_alignstack: {
1070 unsigned Alignment;
1071 if (inAttrGrp) {
1072 Lex.Lex();
1073 if (ParseToken(lltok::equal, "expected '=' here") ||
1074 ParseUInt32(Alignment))
1075 return true;
1076 } else {
1077 if (ParseOptionalStackAlignment(Alignment))
1078 return true;
1079 }
1080 B.addStackAlignmentAttr(Alignment);
1081 continue;
1082 }
1083 case lltok::kw_allocsize: {
1084 unsigned ElemSizeArg;
1085 Optional<unsigned> NumElemsArg;
1086 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1087 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1088 return true;
1089 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1090 continue;
1091 }
1092 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1093 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1094 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1095 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1096 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1097 case lltok::kw_inaccessiblememonly:
1098 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1099 case lltok::kw_inaccessiblemem_or_argmemonly:
1100 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1101 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1102 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1103 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1104 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1105 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1106 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1107 case lltok::kw_noimplicitfloat:
1108 B.addAttribute(Attribute::NoImplicitFloat); break;
1109 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1110 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1111 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1112 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1113 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1114 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1115 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1116 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1117 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1118 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1119 case lltok::kw_returns_twice:
1120 B.addAttribute(Attribute::ReturnsTwice); break;
1121 case lltok::kw_speculatable: B.addAttribute(Attribute::Speculatable); break;
1122 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1123 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1124 case lltok::kw_sspstrong:
1125 B.addAttribute(Attribute::StackProtectStrong); break;
1126 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1127 case lltok::kw_sanitize_address:
1128 B.addAttribute(Attribute::SanitizeAddress); break;
1129 case lltok::kw_sanitize_thread:
1130 B.addAttribute(Attribute::SanitizeThread); break;
1131 case lltok::kw_sanitize_memory:
1132 B.addAttribute(Attribute::SanitizeMemory); break;
1133 case lltok::kw_strictfp: B.addAttribute(Attribute::StrictFP); break;
1134 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1135 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1136
1137 // Error handling.
1138 case lltok::kw_inreg:
1139 case lltok::kw_signext:
1140 case lltok::kw_zeroext:
1141 HaveError |=
1142 Error(Lex.getLoc(),
1143 "invalid use of attribute on a function");
1144 break;
1145 case lltok::kw_byval:
1146 case lltok::kw_dereferenceable:
1147 case lltok::kw_dereferenceable_or_null:
1148 case lltok::kw_inalloca:
1149 case lltok::kw_nest:
1150 case lltok::kw_noalias:
1151 case lltok::kw_nocapture:
1152 case lltok::kw_nonnull:
1153 case lltok::kw_returned:
1154 case lltok::kw_sret:
1155 case lltok::kw_swifterror:
1156 case lltok::kw_swiftself:
1157 HaveError |=
1158 Error(Lex.getLoc(),
1159 "invalid use of parameter-only attribute on a function");
1160 break;
1161 }
1162
1163 Lex.Lex();
1164 }
1165}
1166
1167//===----------------------------------------------------------------------===//
1168// GlobalValue Reference/Resolution Routines.
1169//===----------------------------------------------------------------------===//
1170
1171static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1172 const std::string &Name) {
1173 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1174 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1175 else
1176 return new GlobalVariable(*M, PTy->getElementType(), false,
1177 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1178 nullptr, GlobalVariable::NotThreadLocal,
1179 PTy->getAddressSpace());
1180}
1181
1182/// GetGlobalVal - Get a value with the specified name or ID, creating a
1183/// forward reference record if needed. This can return null if the value
1184/// exists but does not have the right type.
1185GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1186 LocTy Loc) {
1187 PointerType *PTy = dyn_cast<PointerType>(Ty);
1188 if (!PTy) {
1189 Error(Loc, "global variable reference must have pointer type");
1190 return nullptr;
1191 }
1192
1193 // Look this name up in the normal function symbol table.
1194 GlobalValue *Val =
1195 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1196
1197 // If this is a forward reference for the value, see if we already created a
1198 // forward ref record.
1199 if (!Val) {
1200 auto I = ForwardRefVals.find(Name);
1201 if (I != ForwardRefVals.end())
1202 Val = I->second.first;
1203 }
1204
1205 // If we have the value in the symbol table or fwd-ref table, return it.
1206 if (Val) {
1207 if (Val->getType() == Ty) return Val;
1208 Error(Loc, "'@" + Name + "' defined with type '" +
1209 getTypeString(Val->getType()) + "'");
1210 return nullptr;
1211 }
1212
1213 // Otherwise, create a new forward reference for this value and remember it.
1214 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1215 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1216 return FwdVal;
1217}
1218
1219GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1220 PointerType *PTy = dyn_cast<PointerType>(Ty);
1221 if (!PTy) {
1222 Error(Loc, "global variable reference must have pointer type");
1223 return nullptr;
1224 }
1225
1226 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1227
1228 // If this is a forward reference for the value, see if we already created a
1229 // forward ref record.
1230 if (!Val) {
1231 auto I = ForwardRefValIDs.find(ID);
1232 if (I != ForwardRefValIDs.end())
1233 Val = I->second.first;
1234 }
1235
1236 // If we have the value in the symbol table or fwd-ref table, return it.
1237 if (Val) {
1238 if (Val->getType() == Ty) return Val;
1239 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1240 getTypeString(Val->getType()) + "'");
1241 return nullptr;
1242 }
1243
1244 // Otherwise, create a new forward reference for this value and remember it.
1245 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1246 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1247 return FwdVal;
1248}
1249
1250//===----------------------------------------------------------------------===//
1251// Comdat Reference/Resolution Routines.
1252//===----------------------------------------------------------------------===//
1253
1254Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1255 // Look this name up in the comdat symbol table.
1256 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1257 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1258 if (I != ComdatSymTab.end())
1259 return &I->second;
1260
1261 // Otherwise, create a new forward reference for this value and remember it.
1262 Comdat *C = M->getOrInsertComdat(Name);
1263 ForwardRefComdats[Name] = Loc;
1264 return C;
1265}
1266
1267//===----------------------------------------------------------------------===//
1268// Helper Routines.
1269//===----------------------------------------------------------------------===//
1270
1271/// ParseToken - If the current token has the specified kind, eat it and return
1272/// success. Otherwise, emit the specified error and return failure.
1273bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1274 if (Lex.getKind() != T)
1275 return TokError(ErrMsg);
1276 Lex.Lex();
1277 return false;
1278}
1279
1280/// ParseStringConstant
1281/// ::= StringConstant
1282bool LLParser::ParseStringConstant(std::string &Result) {
1283 if (Lex.getKind() != lltok::StringConstant)
1284 return TokError("expected string constant");
1285 Result = Lex.getStrVal();
1286 Lex.Lex();
1287 return false;
1288}
1289
1290/// ParseUInt32
1291/// ::= uint32
1292bool LLParser::ParseUInt32(uint32_t &Val) {
1293 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1294 return TokError("expected integer");
1295 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1296 if (Val64 != unsigned(Val64))
1297 return TokError("expected 32-bit integer (too large)");
1298 Val = Val64;
1299 Lex.Lex();
1300 return false;
1301}
1302
1303/// ParseUInt64
1304/// ::= uint64
1305bool LLParser::ParseUInt64(uint64_t &Val) {
1306 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1307 return TokError("expected integer");
1308 Val = Lex.getAPSIntVal().getLimitedValue();
1309 Lex.Lex();
1310 return false;
1311}
1312
1313/// ParseTLSModel
1314/// := 'localdynamic'
1315/// := 'initialexec'
1316/// := 'localexec'
1317bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1318 switch (Lex.getKind()) {
1319 default:
1320 return TokError("expected localdynamic, initialexec or localexec");
1321 case lltok::kw_localdynamic:
1322 TLM = GlobalVariable::LocalDynamicTLSModel;
1323 break;
1324 case lltok::kw_initialexec:
1325 TLM = GlobalVariable::InitialExecTLSModel;
1326 break;
1327 case lltok::kw_localexec:
1328 TLM = GlobalVariable::LocalExecTLSModel;
1329 break;
1330 }
1331
1332 Lex.Lex();
1333 return false;
1334}
1335
1336/// ParseOptionalThreadLocal
1337/// := /*empty*/
1338/// := 'thread_local'
1339/// := 'thread_local' '(' tlsmodel ')'
1340bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1341 TLM = GlobalVariable::NotThreadLocal;
1342 if (!EatIfPresent(lltok::kw_thread_local))
1343 return false;
1344
1345 TLM = GlobalVariable::GeneralDynamicTLSModel;
1346 if (Lex.getKind() == lltok::lparen) {
1347 Lex.Lex();
1348 return ParseTLSModel(TLM) ||
1349 ParseToken(lltok::rparen, "expected ')' after thread local model");
1350 }
1351 return false;
1352}
1353
1354/// ParseOptionalAddrSpace
1355/// := /*empty*/
1356/// := 'addrspace' '(' uint32 ')'
1357bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1358 AddrSpace = 0;
1359 if (!EatIfPresent(lltok::kw_addrspace))
1360 return false;
1361 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1362 ParseUInt32(AddrSpace) ||
1363 ParseToken(lltok::rparen, "expected ')' in address space");
1364}
1365
1366/// ParseStringAttribute
1367/// := StringConstant
1368/// := StringConstant '=' StringConstant
1369bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1370 std::string Attr = Lex.getStrVal();
1371 Lex.Lex();
1372 std::string Val;
1373 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1374 return true;
1375 B.addAttribute(Attr, Val);
1376 return false;
1377}
1378
1379/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1380bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1381 bool HaveError = false;
1382
1383 B.clear();
1384
1385 while (true) {
1386 lltok::Kind Token = Lex.getKind();
1387 switch (Token) {
1388 default: // End of attributes.
1389 return HaveError;
1390 case lltok::StringConstant: {
1391 if (ParseStringAttribute(B))
1392 return true;
1393 continue;
1394 }
1395 case lltok::kw_align: {
1396 unsigned Alignment;
1397 if (ParseOptionalAlignment(Alignment))
1398 return true;
1399 B.addAlignmentAttr(Alignment);
1400 continue;
1401 }
1402 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1403 case lltok::kw_dereferenceable: {
1404 uint64_t Bytes;
1405 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1406 return true;
1407 B.addDereferenceableAttr(Bytes);
1408 continue;
1409 }
1410 case lltok::kw_dereferenceable_or_null: {
1411 uint64_t Bytes;
1412 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1413 return true;
1414 B.addDereferenceableOrNullAttr(Bytes);
1415 continue;
1416 }
1417 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1418 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1419 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1420 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1421 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1422 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1423 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1424 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1425 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1426 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1427 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1428 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1429 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1430 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1431 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1432
1433 case lltok::kw_alignstack:
1434 case lltok::kw_alwaysinline:
1435 case lltok::kw_argmemonly:
1436 case lltok::kw_builtin:
1437 case lltok::kw_inlinehint:
1438 case lltok::kw_jumptable:
1439 case lltok::kw_minsize:
1440 case lltok::kw_naked:
1441 case lltok::kw_nobuiltin:
1442 case lltok::kw_noduplicate:
1443 case lltok::kw_noimplicitfloat:
1444 case lltok::kw_noinline:
1445 case lltok::kw_nonlazybind:
1446 case lltok::kw_noredzone:
1447 case lltok::kw_noreturn:
1448 case lltok::kw_nounwind:
1449 case lltok::kw_optnone:
1450 case lltok::kw_optsize:
1451 case lltok::kw_returns_twice:
1452 case lltok::kw_sanitize_address:
1453 case lltok::kw_sanitize_memory:
1454 case lltok::kw_sanitize_thread:
1455 case lltok::kw_ssp:
1456 case lltok::kw_sspreq:
1457 case lltok::kw_sspstrong:
1458 case lltok::kw_safestack:
1459 case lltok::kw_strictfp:
1460 case lltok::kw_uwtable:
1461 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1462 break;
1463 }
1464
1465 Lex.Lex();
1466 }
1467}
1468
1469/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1470bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1471 bool HaveError = false;
1472
1473 B.clear();
1474
1475 while (true) {
1476 lltok::Kind Token = Lex.getKind();
1477 switch (Token) {
1478 default: // End of attributes.
1479 return HaveError;
1480 case lltok::StringConstant: {
1481 if (ParseStringAttribute(B))
1482 return true;
1483 continue;
1484 }
1485 case lltok::kw_dereferenceable: {
1486 uint64_t Bytes;
1487 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1488 return true;
1489 B.addDereferenceableAttr(Bytes);
1490 continue;
1491 }
1492 case lltok::kw_dereferenceable_or_null: {
1493 uint64_t Bytes;
1494 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1495 return true;
1496 B.addDereferenceableOrNullAttr(Bytes);
1497 continue;
1498 }
1499 case lltok::kw_align: {
1500 unsigned Alignment;
1501 if (ParseOptionalAlignment(Alignment))
1502 return true;
1503 B.addAlignmentAttr(Alignment);
1504 continue;
1505 }
1506 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1507 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1508 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1509 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1510 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1511
1512 // Error handling.
1513 case lltok::kw_byval:
1514 case lltok::kw_inalloca:
1515 case lltok::kw_nest:
1516 case lltok::kw_nocapture:
1517 case lltok::kw_returned:
1518 case lltok::kw_sret:
1519 case lltok::kw_swifterror:
1520 case lltok::kw_swiftself:
1521 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1522 break;
1523
1524 case lltok::kw_alignstack:
1525 case lltok::kw_alwaysinline:
1526 case lltok::kw_argmemonly:
1527 case lltok::kw_builtin:
1528 case lltok::kw_cold:
1529 case lltok::kw_inlinehint:
1530 case lltok::kw_jumptable:
1531 case lltok::kw_minsize:
1532 case lltok::kw_naked:
1533 case lltok::kw_nobuiltin:
1534 case lltok::kw_noduplicate:
1535 case lltok::kw_noimplicitfloat:
1536 case lltok::kw_noinline:
1537 case lltok::kw_nonlazybind:
1538 case lltok::kw_noredzone:
1539 case lltok::kw_noreturn:
1540 case lltok::kw_nounwind:
1541 case lltok::kw_optnone:
1542 case lltok::kw_optsize:
1543 case lltok::kw_returns_twice:
1544 case lltok::kw_sanitize_address:
1545 case lltok::kw_sanitize_memory:
1546 case lltok::kw_sanitize_thread:
1547 case lltok::kw_ssp:
1548 case lltok::kw_sspreq:
1549 case lltok::kw_sspstrong:
1550 case lltok::kw_safestack:
1551 case lltok::kw_strictfp:
1552 case lltok::kw_uwtable:
1553 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1554 break;
1555
1556 case lltok::kw_readnone:
1557 case lltok::kw_readonly:
1558 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1559 }
1560
1561 Lex.Lex();
1562 }
1563}
1564
1565static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1566 HasLinkage = true;
1567 switch (Kind) {
1568 default:
1569 HasLinkage = false;
1570 return GlobalValue::ExternalLinkage;
1571 case lltok::kw_private:
1572 return GlobalValue::PrivateLinkage;
1573 case lltok::kw_internal:
1574 return GlobalValue::InternalLinkage;
1575 case lltok::kw_weak:
1576 return GlobalValue::WeakAnyLinkage;
1577 case lltok::kw_weak_odr:
1578 return GlobalValue::WeakODRLinkage;
1579 case lltok::kw_linkonce:
1580 return GlobalValue::LinkOnceAnyLinkage;
1581 case lltok::kw_linkonce_odr:
1582 return GlobalValue::LinkOnceODRLinkage;
1583 case lltok::kw_available_externally:
1584 return GlobalValue::AvailableExternallyLinkage;
1585 case lltok::kw_appending:
1586 return GlobalValue::AppendingLinkage;
1587 case lltok::kw_common:
1588 return GlobalValue::CommonLinkage;
1589 case lltok::kw_extern_weak:
1590 return GlobalValue::ExternalWeakLinkage;
1591 case lltok::kw_external:
1592 return GlobalValue::ExternalLinkage;
1593 }
1594}
1595
1596/// ParseOptionalLinkage
1597/// ::= /*empty*/
1598/// ::= 'private'
1599/// ::= 'internal'
1600/// ::= 'weak'
1601/// ::= 'weak_odr'
1602/// ::= 'linkonce'
1603/// ::= 'linkonce_odr'
1604/// ::= 'available_externally'
1605/// ::= 'appending'
1606/// ::= 'common'
1607/// ::= 'extern_weak'
1608/// ::= 'external'
1609bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1610 unsigned &Visibility,
1611 unsigned &DLLStorageClass) {
1612 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1613 if (HasLinkage)
1614 Lex.Lex();
1615 ParseOptionalVisibility(Visibility);
1616 ParseOptionalDLLStorageClass(DLLStorageClass);
1617 return false;
1618}
1619
1620/// ParseOptionalVisibility
1621/// ::= /*empty*/
1622/// ::= 'default'
1623/// ::= 'hidden'
1624/// ::= 'protected'
1625///
1626void LLParser::ParseOptionalVisibility(unsigned &Res) {
1627 switch (Lex.getKind()) {
1628 default:
1629 Res = GlobalValue::DefaultVisibility;
1630 return;
1631 case lltok::kw_default:
1632 Res = GlobalValue::DefaultVisibility;
1633 break;
1634 case lltok::kw_hidden:
1635 Res = GlobalValue::HiddenVisibility;
1636 break;
1637 case lltok::kw_protected:
1638 Res = GlobalValue::ProtectedVisibility;
1639 break;
1640 }
1641 Lex.Lex();
1642}
1643
1644/// ParseOptionalDLLStorageClass
1645/// ::= /*empty*/
1646/// ::= 'dllimport'
1647/// ::= 'dllexport'
1648///
1649void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1650 switch (Lex.getKind()) {
1651 default:
1652 Res = GlobalValue::DefaultStorageClass;
1653 return;
1654 case lltok::kw_dllimport:
1655 Res = GlobalValue::DLLImportStorageClass;
1656 break;
1657 case lltok::kw_dllexport:
1658 Res = GlobalValue::DLLExportStorageClass;
1659 break;
1660 }
1661 Lex.Lex();
1662}
1663
1664/// ParseOptionalCallingConv
1665/// ::= /*empty*/
1666/// ::= 'ccc'
1667/// ::= 'fastcc'
1668/// ::= 'intel_ocl_bicc'
1669/// ::= 'coldcc'
1670/// ::= 'x86_stdcallcc'
1671/// ::= 'x86_fastcallcc'
1672/// ::= 'x86_thiscallcc'
1673/// ::= 'x86_vectorcallcc'
1674/// ::= 'arm_apcscc'
1675/// ::= 'arm_aapcscc'
1676/// ::= 'arm_aapcs_vfpcc'
1677/// ::= 'msp430_intrcc'
1678/// ::= 'avr_intrcc'
1679/// ::= 'avr_signalcc'
1680/// ::= 'ptx_kernel'
1681/// ::= 'ptx_device'
1682/// ::= 'spir_func'
1683/// ::= 'spir_kernel'
1684/// ::= 'x86_64_sysvcc'
1685/// ::= 'win64cc'
1686/// ::= 'webkit_jscc'
1687/// ::= 'anyregcc'
1688/// ::= 'preserve_mostcc'
1689/// ::= 'preserve_allcc'
1690/// ::= 'ghccc'
1691/// ::= 'swiftcc'
1692/// ::= 'x86_intrcc'
1693/// ::= 'hhvmcc'
1694/// ::= 'hhvm_ccc'
1695/// ::= 'cxx_fast_tlscc'
1696/// ::= 'amdgpu_vs'
1697/// ::= 'amdgpu_ls'
1698/// ::= 'amdgpu_hs'
1699/// ::= 'amdgpu_es'
1700/// ::= 'amdgpu_gs'
1701/// ::= 'amdgpu_ps'
1702/// ::= 'amdgpu_cs'
1703/// ::= 'amdgpu_kernel'
1704/// ::= 'cc' UINT
1705///
1706bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1707 switch (Lex.getKind()) {
1708 default: CC = CallingConv::C; return false;
1709 case lltok::kw_ccc: CC = CallingConv::C; break;
1710 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1711 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1712 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1713 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1714 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1715 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1716 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1717 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1718 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1719 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1720 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1721 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1722 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1723 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1724 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1725 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1726 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1727 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1728 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1729 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1730 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1731 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1732 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1733 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1734 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1735 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1736 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1737 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1738 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1739 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1740 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1741 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1742 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1743 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1744 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1745 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1746 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1747 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1748 case lltok::kw_cc: {
1749 Lex.Lex();
1750 return ParseUInt32(CC);
1751 }
1752 }
1753
1754 Lex.Lex();
1755 return false;
1756}
1757
1758/// ParseMetadataAttachment
1759/// ::= !dbg !42
1760bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1761 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~svn316259/lib/AsmParser/LLParser.cpp"
, 1761, __PRETTY_FUNCTION__))
;
1762
1763 std::string Name = Lex.getStrVal();
1764 Kind = M->getMDKindID(Name);
1765 Lex.Lex();
1766
1767 return ParseMDNode(MD);
1768}
1769
1770/// ParseInstructionMetadata
1771/// ::= !dbg !42 (',' !dbg !57)*
1772bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1773 do {
1774 if (Lex.getKind() != lltok::MetadataVar)
1775 return TokError("expected metadata after comma");
1776
1777 unsigned MDK;
1778 MDNode *N;
1779 if (ParseMetadataAttachment(MDK, N))
1780 return true;
1781
1782 Inst.setMetadata(MDK, N);
1783 if (MDK == LLVMContext::MD_tbaa)
1784 InstsWithTBAATag.push_back(&Inst);
1785
1786 // If this is the end of the list, we're done.
1787 } while (EatIfPresent(lltok::comma));
1788 return false;
1789}
1790
1791/// ParseGlobalObjectMetadataAttachment
1792/// ::= !dbg !57
1793bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1794 unsigned MDK;
1795 MDNode *N;
1796 if (ParseMetadataAttachment(MDK, N))
1
Assuming the condition is false
2
Taking false branch
1797 return true;
1798
1799 GO.addMetadata(MDK, *N);
3
2nd function call argument is an uninitialized value
1800 return false;
1801}
1802
1803/// ParseOptionalFunctionMetadata
1804/// ::= (!dbg !57)*
1805bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1806 while (Lex.getKind() == lltok::MetadataVar)
1807 if (ParseGlobalObjectMetadataAttachment(F))
1808 return true;
1809 return false;
1810}
1811
1812/// ParseOptionalAlignment
1813/// ::= /* empty */
1814/// ::= 'align' 4
1815bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1816 Alignment = 0;
1817 if (!EatIfPresent(lltok::kw_align))
1818 return false;
1819 LocTy AlignLoc = Lex.getLoc();
1820 if (ParseUInt32(Alignment)) return true;
1821 if (!isPowerOf2_32(Alignment))
1822 return Error(AlignLoc, "alignment is not a power of two");
1823 if (Alignment > Value::MaximumAlignment)
1824 return Error(AlignLoc, "huge alignments are not supported yet");
1825 return false;
1826}
1827
1828/// ParseOptionalDerefAttrBytes
1829/// ::= /* empty */
1830/// ::= AttrKind '(' 4 ')'
1831///
1832/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1833bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1834 uint64_t &Bytes) {
1835 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~svn316259/lib/AsmParser/LLParser.cpp"
, 1837, __PRETTY_FUNCTION__))
1836 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~svn316259/lib/AsmParser/LLParser.cpp"
, 1837, __PRETTY_FUNCTION__))
1837 "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~svn316259/lib/AsmParser/LLParser.cpp"
, 1837, __PRETTY_FUNCTION__))
;
1838
1839 Bytes = 0;
1840 if (!EatIfPresent(AttrKind))
1841 return false;
1842 LocTy ParenLoc = Lex.getLoc();
1843 if (!EatIfPresent(lltok::lparen))
1844 return Error(ParenLoc, "expected '('");
1845 LocTy DerefLoc = Lex.getLoc();
1846 if (ParseUInt64(Bytes)) return true;
1847 ParenLoc = Lex.getLoc();
1848 if (!EatIfPresent(lltok::rparen))
1849 return Error(ParenLoc, "expected ')'");
1850 if (!Bytes)
1851 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1852 return false;
1853}
1854
1855/// ParseOptionalCommaAlign
1856/// ::=
1857/// ::= ',' align 4
1858///
1859/// This returns with AteExtraComma set to true if it ate an excess comma at the
1860/// end.
1861bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1862 bool &AteExtraComma) {
1863 AteExtraComma = false;
1864 while (EatIfPresent(lltok::comma)) {
1865 // Metadata at the end is an early exit.
1866 if (Lex.getKind() == lltok::MetadataVar) {
1867 AteExtraComma = true;
1868 return false;
1869 }
1870
1871 if (Lex.getKind() != lltok::kw_align)
1872 return Error(Lex.getLoc(), "expected metadata or 'align'");
1873
1874 if (ParseOptionalAlignment(Alignment)) return true;
1875 }
1876
1877 return false;
1878}
1879
1880/// ParseOptionalCommaAddrSpace
1881/// ::=
1882/// ::= ',' addrspace(1)
1883///
1884/// This returns with AteExtraComma set to true if it ate an excess comma at the
1885/// end.
1886bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
1887 LocTy &Loc,
1888 bool &AteExtraComma) {
1889 AteExtraComma = false;
1890 while (EatIfPresent(lltok::comma)) {
1891 // Metadata at the end is an early exit.
1892 if (Lex.getKind() == lltok::MetadataVar) {
1893 AteExtraComma = true;
1894 return false;
1895 }
1896
1897 Loc = Lex.getLoc();
1898 if (Lex.getKind() != lltok::kw_addrspace)
1899 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
1900
1901 if (ParseOptionalAddrSpace(AddrSpace))
1902 return true;
1903 }
1904
1905 return false;
1906}
1907
1908bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1909 Optional<unsigned> &HowManyArg) {
1910 Lex.Lex();
1911
1912 auto StartParen = Lex.getLoc();
1913 if (!EatIfPresent(lltok::lparen))
1914 return Error(StartParen, "expected '('");
1915
1916 if (ParseUInt32(BaseSizeArg))
1917 return true;
1918
1919 if (EatIfPresent(lltok::comma)) {
1920 auto HowManyAt = Lex.getLoc();
1921 unsigned HowMany;
1922 if (ParseUInt32(HowMany))
1923 return true;
1924 if (HowMany == BaseSizeArg)
1925 return Error(HowManyAt,
1926 "'allocsize' indices can't refer to the same parameter");
1927 HowManyArg = HowMany;
1928 } else
1929 HowManyArg = None;
1930
1931 auto EndParen = Lex.getLoc();
1932 if (!EatIfPresent(lltok::rparen))
1933 return Error(EndParen, "expected ')'");
1934 return false;
1935}
1936
1937/// ParseScopeAndOrdering
1938/// if isAtomic: ::= SyncScope? AtomicOrdering
1939/// else: ::=
1940///
1941/// This sets Scope and Ordering to the parsed values.
1942bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
1943 AtomicOrdering &Ordering) {
1944 if (!isAtomic)
1945 return false;
1946
1947 return ParseScope(SSID) || ParseOrdering(Ordering);
1948}
1949
1950/// ParseScope
1951/// ::= syncscope("singlethread" | "<target scope>")?
1952///
1953/// This sets synchronization scope ID to the ID of the parsed value.
1954bool LLParser::ParseScope(SyncScope::ID &SSID) {
1955 SSID = SyncScope::System;
1956 if (EatIfPresent(lltok::kw_syncscope)) {
1957 auto StartParenAt = Lex.getLoc();
1958 if (!EatIfPresent(lltok::lparen))
1959 return Error(StartParenAt, "Expected '(' in syncscope");
1960
1961 std::string SSN;
1962 auto SSNAt = Lex.getLoc();
1963 if (ParseStringConstant(SSN))
1964 return Error(SSNAt, "Expected synchronization scope name");
1965
1966 auto EndParenAt = Lex.getLoc();
1967 if (!EatIfPresent(lltok::rparen))
1968 return Error(EndParenAt, "Expected ')' in syncscope");
1969
1970 SSID = Context.getOrInsertSyncScopeID(SSN);
1971 }
1972
1973 return false;
1974}
1975
1976/// ParseOrdering
1977/// ::= AtomicOrdering
1978///
1979/// This sets Ordering to the parsed value.
1980bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1981 switch (Lex.getKind()) {
1982 default: return TokError("Expected ordering on atomic instruction");
1983 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
1984 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
1985 // Not specified yet:
1986 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
1987 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
1988 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
1989 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
1990 case lltok::kw_seq_cst:
1991 Ordering = AtomicOrdering::SequentiallyConsistent;
1992 break;
1993 }
1994 Lex.Lex();
1995 return false;
1996}
1997
1998/// ParseOptionalStackAlignment
1999/// ::= /* empty */
2000/// ::= 'alignstack' '(' 4 ')'
2001bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2002 Alignment = 0;
2003 if (!EatIfPresent(lltok::kw_alignstack))
2004 return false;
2005 LocTy ParenLoc = Lex.getLoc();
2006 if (!EatIfPresent(lltok::lparen))
2007 return Error(ParenLoc, "expected '('");
2008 LocTy AlignLoc = Lex.getLoc();
2009 if (ParseUInt32(Alignment)) return true;
2010 ParenLoc = Lex.getLoc();
2011 if (!EatIfPresent(lltok::rparen))
2012 return Error(ParenLoc, "expected ')'");
2013 if (!isPowerOf2_32(Alignment))
2014 return Error(AlignLoc, "stack alignment is not a power of two");
2015 return false;
2016}
2017
2018/// ParseIndexList - This parses the index list for an insert/extractvalue
2019/// instruction. This sets AteExtraComma in the case where we eat an extra
2020/// comma at the end of the line and find that it is followed by metadata.
2021/// Clients that don't allow metadata can call the version of this function that
2022/// only takes one argument.
2023///
2024/// ParseIndexList
2025/// ::= (',' uint32)+
2026///
2027bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2028 bool &AteExtraComma) {
2029 AteExtraComma = false;
2030
2031 if (Lex.getKind() != lltok::comma)
2032 return TokError("expected ',' as start of index list");
2033
2034 while (EatIfPresent(lltok::comma)) {
2035 if (Lex.getKind() == lltok::MetadataVar) {
2036 if (Indices.empty()) return TokError("expected index");
2037 AteExtraComma = true;
2038 return false;
2039 }
2040 unsigned Idx = 0;
2041 if (ParseUInt32(Idx)) return true;
2042 Indices.push_back(Idx);
2043 }
2044
2045 return false;
2046}
2047
2048//===----------------------------------------------------------------------===//
2049// Type Parsing.
2050//===----------------------------------------------------------------------===//
2051
2052/// ParseType - Parse a type.
2053bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2054 SMLoc TypeLoc = Lex.getLoc();
2055 switch (Lex.getKind()) {
2056 default:
2057 return TokError(Msg);
2058 case lltok::Type:
2059 // Type ::= 'float' | 'void' (etc)
2060 Result = Lex.getTyVal();
2061 Lex.Lex();
2062 break;
2063 case lltok::lbrace:
2064 // Type ::= StructType
2065 if (ParseAnonStructType(Result, false))
2066 return true;
2067 break;
2068 case lltok::lsquare:
2069 // Type ::= '[' ... ']'
2070 Lex.Lex(); // eat the lsquare.
2071 if (ParseArrayVectorType(Result, false))
2072 return true;
2073 break;
2074 case lltok::less: // Either vector or packed struct.
2075 // Type ::= '<' ... '>'
2076 Lex.Lex();
2077 if (Lex.getKind() == lltok::lbrace) {
2078 if (ParseAnonStructType(Result, true) ||
2079 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2080 return true;
2081 } else if (ParseArrayVectorType(Result, true))
2082 return true;
2083 break;
2084 case lltok::LocalVar: {
2085 // Type ::= %foo
2086 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2087
2088 // If the type hasn't been defined yet, create a forward definition and
2089 // remember where that forward def'n was seen (in case it never is defined).
2090 if (!Entry.first) {
2091 Entry.first = StructType::create(Context, Lex.getStrVal());
2092 Entry.second = Lex.getLoc();
2093 }
2094 Result = Entry.first;
2095 Lex.Lex();
2096 break;
2097 }
2098
2099 case lltok::LocalVarID: {
2100 // Type ::= %4
2101 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2102
2103 // If the type hasn't been defined yet, create a forward definition and
2104 // remember where that forward def'n was seen (in case it never is defined).
2105 if (!Entry.first) {
2106 Entry.first = StructType::create(Context);
2107 Entry.second = Lex.getLoc();
2108 }
2109 Result = Entry.first;
2110 Lex.Lex();
2111 break;
2112 }
2113 }
2114
2115 // Parse the type suffixes.
2116 while (true) {
2117 switch (Lex.getKind()) {
2118 // End of type.
2119 default:
2120 if (!AllowVoid && Result->isVoidTy())
2121 return Error(TypeLoc, "void type only allowed for function results");
2122 return false;
2123
2124 // Type ::= Type '*'
2125 case lltok::star:
2126 if (Result->isLabelTy())
2127 return TokError("basic block pointers are invalid");
2128 if (Result->isVoidTy())
2129 return TokError("pointers to void are invalid - use i8* instead");
2130 if (!PointerType::isValidElementType(Result))
2131 return TokError("pointer to this type is invalid");
2132 Result = PointerType::getUnqual(Result);
2133 Lex.Lex();
2134 break;
2135
2136 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2137 case lltok::kw_addrspace: {
2138 if (Result->isLabelTy())
2139 return TokError("basic block pointers are invalid");
2140 if (Result->isVoidTy())
2141 return TokError("pointers to void are invalid; use i8* instead");
2142 if (!PointerType::isValidElementType(Result))
2143 return TokError("pointer to this type is invalid");
2144 unsigned AddrSpace;
2145 if (ParseOptionalAddrSpace(AddrSpace) ||
2146 ParseToken(lltok::star, "expected '*' in address space"))
2147 return true;
2148
2149 Result = PointerType::get(Result, AddrSpace);
2150 break;
2151 }
2152
2153 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2154 case lltok::lparen:
2155 if (ParseFunctionType(Result))
2156 return true;
2157 break;
2158 }
2159 }
2160}
2161
2162/// ParseParameterList
2163/// ::= '(' ')'
2164/// ::= '(' Arg (',' Arg)* ')'
2165/// Arg
2166/// ::= Type OptionalAttributes Value OptionalAttributes
2167bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2168 PerFunctionState &PFS, bool IsMustTailCall,
2169 bool InVarArgsFunc) {
2170 if (ParseToken(lltok::lparen, "expected '(' in call"))
2171 return true;
2172
2173 while (Lex.getKind() != lltok::rparen) {
2174 // If this isn't the first argument, we need a comma.
2175 if (!ArgList.empty() &&
2176 ParseToken(lltok::comma, "expected ',' in argument list"))
2177 return true;
2178
2179 // Parse an ellipsis if this is a musttail call in a variadic function.
2180 if (Lex.getKind() == lltok::dotdotdot) {
2181 const char *Msg = "unexpected ellipsis in argument list for ";
2182 if (!IsMustTailCall)
2183 return TokError(Twine(Msg) + "non-musttail call");
2184 if (!InVarArgsFunc)
2185 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2186 Lex.Lex(); // Lex the '...', it is purely for readability.
2187 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2188 }
2189
2190 // Parse the argument.
2191 LocTy ArgLoc;
2192 Type *ArgTy = nullptr;
2193 AttrBuilder ArgAttrs;
2194 Value *V;
2195 if (ParseType(ArgTy, ArgLoc))
2196 return true;
2197
2198 if (ArgTy->isMetadataTy()) {
2199 if (ParseMetadataAsValue(V, PFS))
2200 return true;
2201 } else {
2202 // Otherwise, handle normal operands.
2203 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2204 return true;
2205 }
2206 ArgList.push_back(ParamInfo(
2207 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2208 }
2209
2210 if (IsMustTailCall && InVarArgsFunc)
2211 return TokError("expected '...' at end of argument list for musttail call "
2212 "in varargs function");
2213
2214 Lex.Lex(); // Lex the ')'.
2215 return false;
2216}
2217
2218/// ParseOptionalOperandBundles
2219/// ::= /*empty*/
2220/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2221///
2222/// OperandBundle
2223/// ::= bundle-tag '(' ')'
2224/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2225///
2226/// bundle-tag ::= String Constant
2227bool LLParser::ParseOptionalOperandBundles(
2228 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2229 LocTy BeginLoc = Lex.getLoc();
2230 if (!EatIfPresent(lltok::lsquare))
2231 return false;
2232
2233 while (Lex.getKind() != lltok::rsquare) {
2234 // If this isn't the first operand bundle, we need a comma.
2235 if (!BundleList.empty() &&
2236 ParseToken(lltok::comma, "expected ',' in input list"))
2237 return true;
2238
2239 std::string Tag;
2240 if (ParseStringConstant(Tag))
2241 return true;
2242
2243 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2244 return true;
2245
2246 std::vector<Value *> Inputs;
2247 while (Lex.getKind() != lltok::rparen) {
2248 // If this isn't the first input, we need a comma.
2249 if (!Inputs.empty() &&
2250 ParseToken(lltok::comma, "expected ',' in input list"))
2251 return true;
2252
2253 Type *Ty = nullptr;
2254 Value *Input = nullptr;
2255 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2256 return true;
2257 Inputs.push_back(Input);
2258 }
2259
2260 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2261
2262 Lex.Lex(); // Lex the ')'.
2263 }
2264
2265 if (BundleList.empty())
2266 return Error(BeginLoc, "operand bundle set must not be empty");
2267
2268 Lex.Lex(); // Lex the ']'.
2269 return false;
2270}
2271
2272/// ParseArgumentList - Parse the argument list for a function type or function
2273/// prototype.
2274/// ::= '(' ArgTypeListI ')'
2275/// ArgTypeListI
2276/// ::= /*empty*/
2277/// ::= '...'
2278/// ::= ArgTypeList ',' '...'
2279/// ::= ArgType (',' ArgType)*
2280///
2281bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2282 bool &isVarArg){
2283 isVarArg = false;
2284 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~svn316259/lib/AsmParser/LLParser.cpp"
, 2284, __PRETTY_FUNCTION__))
;
2285 Lex.Lex(); // eat the (.
2286
2287 if (Lex.getKind() == lltok::rparen) {
2288 // empty
2289 } else if (Lex.getKind() == lltok::dotdotdot) {
2290 isVarArg = true;
2291 Lex.Lex();
2292 } else {
2293 LocTy TypeLoc = Lex.getLoc();
2294 Type *ArgTy = nullptr;
2295 AttrBuilder Attrs;
2296 std::string Name;
2297
2298 if (ParseType(ArgTy) ||
2299 ParseOptionalParamAttrs(Attrs)) return true;
2300
2301 if (ArgTy->isVoidTy())
2302 return Error(TypeLoc, "argument can not have void type");
2303
2304 if (Lex.getKind() == lltok::LocalVar) {
2305 Name = Lex.getStrVal();
2306 Lex.Lex();
2307 }
2308
2309 if (!FunctionType::isValidArgumentType(ArgTy))
2310 return Error(TypeLoc, "invalid type for function argument");
2311
2312 ArgList.emplace_back(TypeLoc, ArgTy,
2313 AttributeSet::get(ArgTy->getContext(), Attrs),
2314 std::move(Name));
2315
2316 while (EatIfPresent(lltok::comma)) {
2317 // Handle ... at end of arg list.
2318 if (EatIfPresent(lltok::dotdotdot)) {
2319 isVarArg = true;
2320 break;
2321 }
2322
2323 // Otherwise must be an argument type.
2324 TypeLoc = Lex.getLoc();
2325 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2326
2327 if (ArgTy->isVoidTy())
2328 return Error(TypeLoc, "argument can not have void type");
2329
2330 if (Lex.getKind() == lltok::LocalVar) {
2331 Name = Lex.getStrVal();
2332 Lex.Lex();
2333 } else {
2334 Name = "";
2335 }
2336
2337 if (!ArgTy->isFirstClassType())
2338 return Error(TypeLoc, "invalid type for function argument");
2339
2340 ArgList.emplace_back(TypeLoc, ArgTy,
2341 AttributeSet::get(ArgTy->getContext(), Attrs),
2342 std::move(Name));
2343 }
2344 }
2345
2346 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2347}
2348
2349/// ParseFunctionType
2350/// ::= Type ArgumentList OptionalAttrs
2351bool LLParser::ParseFunctionType(Type *&Result) {
2352 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~svn316259/lib/AsmParser/LLParser.cpp"
, 2352, __PRETTY_FUNCTION__))
;
2353
2354 if (!FunctionType::isValidReturnType(Result))
2355 return TokError("invalid function return type");
2356
2357 SmallVector<ArgInfo, 8> ArgList;
2358 bool isVarArg;
2359 if (ParseArgumentList(ArgList, isVarArg))
2360 return true;
2361
2362 // Reject names on the arguments lists.
2363 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2364 if (!ArgList[i].Name.empty())
2365 return Error(ArgList[i].Loc, "argument name invalid in function type");
2366 if (ArgList[i].Attrs.hasAttributes())
2367 return Error(ArgList[i].Loc,
2368 "argument attributes invalid in function type");
2369 }
2370
2371 SmallVector<Type*, 16> ArgListTy;
2372 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2373 ArgListTy.push_back(ArgList[i].Ty);
2374
2375 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2376 return false;
2377}
2378
2379/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2380/// other structs.
2381bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2382 SmallVector<Type*, 8> Elts;
2383 if (ParseStructBody(Elts)) return true;
2384
2385 Result = StructType::get(Context, Elts, Packed);
2386 return false;
2387}
2388
2389/// ParseStructDefinition - Parse a struct in a 'type' definition.
2390bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2391 std::pair<Type*, LocTy> &Entry,
2392 Type *&ResultTy) {
2393 // If the type was already defined, diagnose the redefinition.
2394 if (Entry.first && !Entry.second.isValid())
2395 return Error(TypeLoc, "redefinition of type");
2396
2397 // If we have opaque, just return without filling in the definition for the
2398 // struct. This counts as a definition as far as the .ll file goes.
2399 if (EatIfPresent(lltok::kw_opaque)) {
2400 // This type is being defined, so clear the location to indicate this.
2401 Entry.second = SMLoc();
2402
2403 // If this type number has never been uttered, create it.
2404 if (!Entry.first)
2405 Entry.first = StructType::create(Context, Name);
2406 ResultTy = Entry.first;
2407 return false;
2408 }
2409
2410 // If the type starts with '<', then it is either a packed struct or a vector.
2411 bool isPacked = EatIfPresent(lltok::less);
2412
2413 // If we don't have a struct, then we have a random type alias, which we
2414 // accept for compatibility with old files. These types are not allowed to be
2415 // forward referenced and not allowed to be recursive.
2416 if (Lex.getKind() != lltok::lbrace) {
2417 if (Entry.first)
2418 return Error(TypeLoc, "forward references to non-struct type");
2419
2420 ResultTy = nullptr;
2421 if (isPacked)
2422 return ParseArrayVectorType(ResultTy, true);
2423 return ParseType(ResultTy);
2424 }
2425
2426 // This type is being defined, so clear the location to indicate this.
2427 Entry.second = SMLoc();
2428
2429 // If this type number has never been uttered, create it.
2430 if (!Entry.first)
2431 Entry.first = StructType::create(Context, Name);
2432
2433 StructType *STy = cast<StructType>(Entry.first);
2434
2435 SmallVector<Type*, 8> Body;
2436 if (ParseStructBody(Body) ||
2437 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2438 return true;
2439
2440 STy->setBody(Body, isPacked);
2441 ResultTy = STy;
2442 return false;
2443}
2444
2445/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2446/// StructType
2447/// ::= '{' '}'
2448/// ::= '{' Type (',' Type)* '}'
2449/// ::= '<' '{' '}' '>'
2450/// ::= '<' '{' Type (',' Type)* '}' '>'
2451bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2452 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~svn316259/lib/AsmParser/LLParser.cpp"
, 2452, __PRETTY_FUNCTION__))
;
2453 Lex.Lex(); // Consume the '{'
2454
2455 // Handle the empty struct.
2456 if (EatIfPresent(lltok::rbrace))
2457 return false;
2458
2459 LocTy EltTyLoc = Lex.getLoc();
2460 Type *Ty = nullptr;
2461 if (ParseType(Ty)) return true;
2462 Body.push_back(Ty);
2463
2464 if (!StructType::isValidElementType(Ty))
2465 return Error(EltTyLoc, "invalid element type for struct");
2466
2467 while (EatIfPresent(lltok::comma)) {
2468 EltTyLoc = Lex.getLoc();
2469 if (ParseType(Ty)) return true;
2470
2471 if (!StructType::isValidElementType(Ty))
2472 return Error(EltTyLoc, "invalid element type for struct");
2473
2474 Body.push_back(Ty);
2475 }
2476
2477 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2478}
2479
2480/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2481/// token has already been consumed.
2482/// Type
2483/// ::= '[' APSINTVAL 'x' Types ']'
2484/// ::= '<' APSINTVAL 'x' Types '>'
2485bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2486 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2487 Lex.getAPSIntVal().getBitWidth() > 64)
2488 return TokError("expected number in address space");
2489
2490 LocTy SizeLoc = Lex.getLoc();
2491 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2492 Lex.Lex();
2493
2494 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2495 return true;
2496
2497 LocTy TypeLoc = Lex.getLoc();
2498 Type *EltTy = nullptr;
2499 if (ParseType(EltTy)) return true;
2500
2501 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2502 "expected end of sequential type"))
2503 return true;
2504
2505 if (isVector) {
2506 if (Size == 0)
2507 return Error(SizeLoc, "zero element vector is illegal");
2508 if ((unsigned)Size != Size)
2509 return Error(SizeLoc, "size too large for vector");
2510 if (!VectorType::isValidElementType(EltTy))
2511 return Error(TypeLoc, "invalid vector element type");
2512 Result = VectorType::get(EltTy, unsigned(Size));
2513 } else {
2514 if (!ArrayType::isValidElementType(EltTy))
2515 return Error(TypeLoc, "invalid array element type");
2516 Result = ArrayType::get(EltTy, Size);
2517 }
2518 return false;
2519}
2520
2521//===----------------------------------------------------------------------===//
2522// Function Semantic Analysis.
2523//===----------------------------------------------------------------------===//
2524
2525LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2526 int functionNumber)
2527 : P(p), F(f), FunctionNumber(functionNumber) {
2528
2529 // Insert unnamed arguments into the NumberedVals list.
2530 for (Argument &A : F.args())
2531 if (!A.hasName())
2532 NumberedVals.push_back(&A);
2533}
2534
2535LLParser::PerFunctionState::~PerFunctionState() {
2536 // If there were any forward referenced non-basicblock values, delete them.
2537
2538 for (const auto &P : ForwardRefVals) {
2539 if (isa<BasicBlock>(P.second.first))
2540 continue;
2541 P.second.first->replaceAllUsesWith(
2542 UndefValue::get(P.second.first->getType()));
2543 P.second.first->deleteValue();
2544 }
2545
2546 for (const auto &P : ForwardRefValIDs) {
2547 if (isa<BasicBlock>(P.second.first))
2548 continue;
2549 P.second.first->replaceAllUsesWith(
2550 UndefValue::get(P.second.first->getType()));
2551 P.second.first->deleteValue();
2552 }
2553}
2554
2555bool LLParser::PerFunctionState::FinishFunction() {
2556 if (!ForwardRefVals.empty())
2557 return P.Error(ForwardRefVals.begin()->second.second,
2558 "use of undefined value '%" + ForwardRefVals.begin()->first +
2559 "'");
2560 if (!ForwardRefValIDs.empty())
2561 return P.Error(ForwardRefValIDs.begin()->second.second,
2562 "use of undefined value '%" +
2563 Twine(ForwardRefValIDs.begin()->first) + "'");
2564 return false;
2565}
2566
2567/// GetVal - Get a value with the specified name or ID, creating a
2568/// forward reference record if needed. This can return null if the value
2569/// exists but does not have the right type.
2570Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2571 LocTy Loc) {
2572 // Look this name up in the normal function symbol table.
2573 Value *Val = F.getValueSymbolTable()->lookup(Name);
2574
2575 // If this is a forward reference for the value, see if we already created a
2576 // forward ref record.
2577 if (!Val) {
2578 auto I = ForwardRefVals.find(Name);
2579 if (I != ForwardRefVals.end())
2580 Val = I->second.first;
2581 }
2582
2583 // If we have the value in the symbol table or fwd-ref table, return it.
2584 if (Val) {
2585 if (Val->getType() == Ty) return Val;
2586 if (Ty->isLabelTy())
2587 P.Error(Loc, "'%" + Name + "' is not a basic block");
2588 else
2589 P.Error(Loc, "'%" + Name + "' defined with type '" +
2590 getTypeString(Val->getType()) + "'");
2591 return nullptr;
2592 }
2593
2594 // Don't make placeholders with invalid type.
2595 if (!Ty->isFirstClassType()) {
2596 P.Error(Loc, "invalid use of a non-first-class type");
2597 return nullptr;
2598 }
2599
2600 // Otherwise, create a new forward reference for this value and remember it.
2601 Value *FwdVal;
2602 if (Ty->isLabelTy()) {
2603 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2604 } else {
2605 FwdVal = new Argument(Ty, Name);
2606 }
2607
2608 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2609 return FwdVal;
2610}
2611
2612Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2613 // Look this name up in the normal function symbol table.
2614 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
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 = ForwardRefValIDs.find(ID);
2620 if (I != ForwardRefValIDs.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, "'%" + Twine(ID) + "' is not a basic block");
2629 else
2630 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2631 getTypeString(Val->getType()) + "'");
2632 return nullptr;
2633 }
2634
2635 if (!Ty->isFirstClassType()) {
2636 P.Error(Loc, "invalid use of a non-first-class type");
2637 return nullptr;
2638 }
2639
2640 // Otherwise, create a new forward reference for this value and remember it.
2641 Value *FwdVal;
2642 if (Ty->isLabelTy()) {
2643 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2644 } else {
2645 FwdVal = new Argument(Ty);
2646 }
2647
2648 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2649 return FwdVal;
2650}
2651
2652/// SetInstName - After an instruction is parsed and inserted into its
2653/// basic block, this installs its name.
2654bool LLParser::PerFunctionState::SetInstName(int NameID,
2655 const std::string &NameStr,
2656 LocTy NameLoc, Instruction *Inst) {
2657 // If this instruction has void type, it cannot have a name or ID specified.
2658 if (Inst->getType()->isVoidTy()) {
2659 if (NameID != -1 || !NameStr.empty())
2660 return P.Error(NameLoc, "instructions returning void cannot have a name");
2661 return false;
2662 }
2663
2664 // If this was a numbered instruction, verify that the instruction is the
2665 // expected value and resolve any forward references.
2666 if (NameStr.empty()) {
2667 // If neither a name nor an ID was specified, just use the next ID.
2668 if (NameID == -1)
2669 NameID = NumberedVals.size();
2670
2671 if (unsigned(NameID) != NumberedVals.size())
2672 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2673 Twine(NumberedVals.size()) + "'");
2674
2675 auto FI = ForwardRefValIDs.find(NameID);
2676 if (FI != ForwardRefValIDs.end()) {
2677 Value *Sentinel = FI->second.first;
2678 if (Sentinel->getType() != Inst->getType())
2679 return P.Error(NameLoc, "instruction forward referenced with type '" +
2680 getTypeString(FI->second.first->getType()) + "'");
2681
2682 Sentinel->replaceAllUsesWith(Inst);
2683 Sentinel->deleteValue();
2684 ForwardRefValIDs.erase(FI);
2685 }
2686
2687 NumberedVals.push_back(Inst);
2688 return false;
2689 }
2690
2691 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2692 auto FI = ForwardRefVals.find(NameStr);
2693 if (FI != ForwardRefVals.end()) {
2694 Value *Sentinel = FI->second.first;
2695 if (Sentinel->getType() != Inst->getType())
2696 return P.Error(NameLoc, "instruction forward referenced with type '" +
2697 getTypeString(FI->second.first->getType()) + "'");
2698
2699 Sentinel->replaceAllUsesWith(Inst);
2700 Sentinel->deleteValue();
2701 ForwardRefVals.erase(FI);
2702 }
2703
2704 // Set the name on the instruction.
2705 Inst->setName(NameStr);
2706
2707 if (Inst->getName() != NameStr)
2708 return P.Error(NameLoc, "multiple definition of local value named '" +
2709 NameStr + "'");
2710 return false;
2711}
2712
2713/// GetBB - Get a basic block with the specified name or ID, creating a
2714/// forward reference record if needed.
2715BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2716 LocTy Loc) {
2717 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2718 Type::getLabelTy(F.getContext()), Loc));
2719}
2720
2721BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2722 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2723 Type::getLabelTy(F.getContext()), Loc));
2724}
2725
2726/// DefineBB - Define the specified basic block, which is either named or
2727/// unnamed. If there is an error, this returns null otherwise it returns
2728/// the block being defined.
2729BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2730 LocTy Loc) {
2731 BasicBlock *BB;
2732 if (Name.empty())
2733 BB = GetBB(NumberedVals.size(), Loc);
2734 else
2735 BB = GetBB(Name, Loc);
2736 if (!BB) return nullptr; // Already diagnosed error.
2737
2738 // Move the block to the end of the function. Forward ref'd blocks are
2739 // inserted wherever they happen to be referenced.
2740 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2741
2742 // Remove the block from forward ref sets.
2743 if (Name.empty()) {
2744 ForwardRefValIDs.erase(NumberedVals.size());
2745 NumberedVals.push_back(BB);
2746 } else {
2747 // BB forward references are already in the function symbol table.
2748 ForwardRefVals.erase(Name);
2749 }
2750
2751 return BB;
2752}
2753
2754//===----------------------------------------------------------------------===//
2755// Constants.
2756//===----------------------------------------------------------------------===//
2757
2758/// ParseValID - Parse an abstract value that doesn't necessarily have a
2759/// type implied. For example, if we parse "4" we don't know what integer type
2760/// it has. The value will later be combined with its type and checked for
2761/// sanity. PFS is used to convert function-local operands of metadata (since
2762/// metadata operands are not just parsed here but also converted to values).
2763/// PFS can be null when we are not parsing metadata values inside a function.
2764bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2765 ID.Loc = Lex.getLoc();
2766 switch (Lex.getKind()) {
2767 default: return TokError("expected value token");
2768 case lltok::GlobalID: // @42
2769 ID.UIntVal = Lex.getUIntVal();
2770 ID.Kind = ValID::t_GlobalID;
2771 break;
2772 case lltok::GlobalVar: // @foo
2773 ID.StrVal = Lex.getStrVal();
2774 ID.Kind = ValID::t_GlobalName;
2775 break;
2776 case lltok::LocalVarID: // %42
2777 ID.UIntVal = Lex.getUIntVal();
2778 ID.Kind = ValID::t_LocalID;
2779 break;
2780 case lltok::LocalVar: // %foo
2781 ID.StrVal = Lex.getStrVal();
2782 ID.Kind = ValID::t_LocalName;
2783 break;
2784 case lltok::APSInt:
2785 ID.APSIntVal = Lex.getAPSIntVal();
2786 ID.Kind = ValID::t_APSInt;
2787 break;
2788 case lltok::APFloat:
2789 ID.APFloatVal = Lex.getAPFloatVal();
2790 ID.Kind = ValID::t_APFloat;
2791 break;
2792 case lltok::kw_true:
2793 ID.ConstantVal = ConstantInt::getTrue(Context);
2794 ID.Kind = ValID::t_Constant;
2795 break;
2796 case lltok::kw_false:
2797 ID.ConstantVal = ConstantInt::getFalse(Context);
2798 ID.Kind = ValID::t_Constant;
2799 break;
2800 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2801 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2802 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2803 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2804
2805 case lltok::lbrace: {
2806 // ValID ::= '{' ConstVector '}'
2807 Lex.Lex();
2808 SmallVector<Constant*, 16> Elts;
2809 if (ParseGlobalValueVector(Elts) ||
2810 ParseToken(lltok::rbrace, "expected end of struct constant"))
2811 return true;
2812
2813 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2814 ID.UIntVal = Elts.size();
2815 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2816 Elts.size() * sizeof(Elts[0]));
2817 ID.Kind = ValID::t_ConstantStruct;
2818 return false;
2819 }
2820 case lltok::less: {
2821 // ValID ::= '<' ConstVector '>' --> Vector.
2822 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2823 Lex.Lex();
2824 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2825
2826 SmallVector<Constant*, 16> Elts;
2827 LocTy FirstEltLoc = Lex.getLoc();
2828 if (ParseGlobalValueVector(Elts) ||
2829 (isPackedStruct &&
2830 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2831 ParseToken(lltok::greater, "expected end of constant"))
2832 return true;
2833
2834 if (isPackedStruct) {
2835 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2836 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2837 Elts.size() * sizeof(Elts[0]));
2838 ID.UIntVal = Elts.size();
2839 ID.Kind = ValID::t_PackedConstantStruct;
2840 return false;
2841 }
2842
2843 if (Elts.empty())
2844 return Error(ID.Loc, "constant vector must not be empty");
2845
2846 if (!Elts[0]->getType()->isIntegerTy() &&
2847 !Elts[0]->getType()->isFloatingPointTy() &&
2848 !Elts[0]->getType()->isPointerTy())
2849 return Error(FirstEltLoc,
2850 "vector elements must have integer, pointer or floating point type");
2851
2852 // Verify that all the vector elements have the same type.
2853 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2854 if (Elts[i]->getType() != Elts[0]->getType())
2855 return Error(FirstEltLoc,
2856 "vector element #" + Twine(i) +
2857 " is not of type '" + getTypeString(Elts[0]->getType()));
2858
2859 ID.ConstantVal = ConstantVector::get(Elts);
2860 ID.Kind = ValID::t_Constant;
2861 return false;
2862 }
2863 case lltok::lsquare: { // Array Constant
2864 Lex.Lex();
2865 SmallVector<Constant*, 16> Elts;
2866 LocTy FirstEltLoc = Lex.getLoc();
2867 if (ParseGlobalValueVector(Elts) ||
2868 ParseToken(lltok::rsquare, "expected end of array constant"))
2869 return true;
2870
2871 // Handle empty element.
2872 if (Elts.empty()) {
2873 // Use undef instead of an array because it's inconvenient to determine
2874 // the element type at this point, there being no elements to examine.
2875 ID.Kind = ValID::t_EmptyArray;
2876 return false;
2877 }
2878
2879 if (!Elts[0]->getType()->isFirstClassType())
2880 return Error(FirstEltLoc, "invalid array element type: " +
2881 getTypeString(Elts[0]->getType()));
2882
2883 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2884
2885 // Verify all elements are correct type!
2886 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2887 if (Elts[i]->getType() != Elts[0]->getType())
2888 return Error(FirstEltLoc,
2889 "array element #" + Twine(i) +
2890 " is not of type '" + getTypeString(Elts[0]->getType()));
2891 }
2892
2893 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2894 ID.Kind = ValID::t_Constant;
2895 return false;
2896 }
2897 case lltok::kw_c: // c "foo"
2898 Lex.Lex();
2899 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2900 false);
2901 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2902 ID.Kind = ValID::t_Constant;
2903 return false;
2904
2905 case lltok::kw_asm: {
2906 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2907 // STRINGCONSTANT
2908 bool HasSideEffect, AlignStack, AsmDialect;
2909 Lex.Lex();
2910 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2911 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2912 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2913 ParseStringConstant(ID.StrVal) ||
2914 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2915 ParseToken(lltok::StringConstant, "expected constraint string"))
2916 return true;
2917 ID.StrVal2 = Lex.getStrVal();
2918 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2919 (unsigned(AsmDialect)<<2);
2920 ID.Kind = ValID::t_InlineAsm;
2921 return false;
2922 }
2923
2924 case lltok::kw_blockaddress: {
2925 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2926 Lex.Lex();
2927
2928 ValID Fn, Label;
2929
2930 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2931 ParseValID(Fn) ||
2932 ParseToken(lltok::comma, "expected comma in block address expression")||
2933 ParseValID(Label) ||
2934 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2935 return true;
2936
2937 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2938 return Error(Fn.Loc, "expected function name in blockaddress");
2939 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2940 return Error(Label.Loc, "expected basic block name in blockaddress");
2941
2942 // Try to find the function (but skip it if it's forward-referenced).
2943 GlobalValue *GV = nullptr;
2944 if (Fn.Kind == ValID::t_GlobalID) {
2945 if (Fn.UIntVal < NumberedVals.size())
2946 GV = NumberedVals[Fn.UIntVal];
2947 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2948 GV = M->getNamedValue(Fn.StrVal);
2949 }
2950 Function *F = nullptr;
2951 if (GV) {
2952 // Confirm that it's actually a function with a definition.
2953 if (!isa<Function>(GV))
2954 return Error(Fn.Loc, "expected function name in blockaddress");
2955 F = cast<Function>(GV);
2956 if (F->isDeclaration())
2957 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2958 }
2959
2960 if (!F) {
2961 // Make a global variable as a placeholder for this reference.
2962 GlobalValue *&FwdRef =
2963 ForwardRefBlockAddresses.insert(std::make_pair(
2964 std::move(Fn),
2965 std::map<ValID, GlobalValue *>()))
2966 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2967 .first->second;
2968 if (!FwdRef)
2969 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2970 GlobalValue::InternalLinkage, nullptr, "");
2971 ID.ConstantVal = FwdRef;
2972 ID.Kind = ValID::t_Constant;
2973 return false;
2974 }
2975
2976 // We found the function; now find the basic block. Don't use PFS, since we
2977 // might be inside a constant expression.
2978 BasicBlock *BB;
2979 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2980 if (Label.Kind == ValID::t_LocalID)
2981 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2982 else
2983 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2984 if (!BB)
2985 return Error(Label.Loc, "referenced value is not a basic block");
2986 } else {
2987 if (Label.Kind == ValID::t_LocalID)
2988 return Error(Label.Loc, "cannot take address of numeric label after "
2989 "the function is defined");
2990 BB = dyn_cast_or_null<BasicBlock>(
2991 F->getValueSymbolTable()->lookup(Label.StrVal));
2992 if (!BB)
2993 return Error(Label.Loc, "referenced value is not a basic block");
2994 }
2995
2996 ID.ConstantVal = BlockAddress::get(F, BB);
2997 ID.Kind = ValID::t_Constant;
2998 return false;
2999 }
3000
3001 case lltok::kw_trunc:
3002 case lltok::kw_zext:
3003 case lltok::kw_sext:
3004 case lltok::kw_fptrunc:
3005 case lltok::kw_fpext:
3006 case lltok::kw_bitcast:
3007 case lltok::kw_addrspacecast:
3008 case lltok::kw_uitofp:
3009 case lltok::kw_sitofp:
3010 case lltok::kw_fptoui:
3011 case lltok::kw_fptosi:
3012 case lltok::kw_inttoptr:
3013 case lltok::kw_ptrtoint: {
3014 unsigned Opc = Lex.getUIntVal();
3015 Type *DestTy = nullptr;
3016 Constant *SrcVal;
3017 Lex.Lex();
3018 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3019 ParseGlobalTypeAndValue(SrcVal) ||
3020 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3021 ParseType(DestTy) ||
3022 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3023 return true;
3024 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3025 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3026 getTypeString(SrcVal->getType()) + "' to '" +
3027 getTypeString(DestTy) + "'");
3028 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3029 SrcVal, DestTy);
3030 ID.Kind = ValID::t_Constant;
3031 return false;
3032 }
3033 case lltok::kw_extractvalue: {
3034 Lex.Lex();
3035 Constant *Val;
3036 SmallVector<unsigned, 4> Indices;
3037 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3038 ParseGlobalTypeAndValue(Val) ||
3039 ParseIndexList(Indices) ||
3040 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3041 return true;
3042
3043 if (!Val->getType()->isAggregateType())
3044 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3045 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3046 return Error(ID.Loc, "invalid indices for extractvalue");
3047 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3048 ID.Kind = ValID::t_Constant;
3049 return false;
3050 }
3051 case lltok::kw_insertvalue: {
3052 Lex.Lex();
3053 Constant *Val0, *Val1;
3054 SmallVector<unsigned, 4> Indices;
3055 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3056 ParseGlobalTypeAndValue(Val0) ||
3057 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3058 ParseGlobalTypeAndValue(Val1) ||
3059 ParseIndexList(Indices) ||
3060 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3061 return true;
3062 if (!Val0->getType()->isAggregateType())
3063 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3064 Type *IndexedType =
3065 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3066 if (!IndexedType)
3067 return Error(ID.Loc, "invalid indices for insertvalue");
3068 if (IndexedType != Val1->getType())
3069 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3070 getTypeString(Val1->getType()) +
3071 "' instead of '" + getTypeString(IndexedType) +
3072 "'");
3073 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3074 ID.Kind = ValID::t_Constant;
3075 return false;
3076 }
3077 case lltok::kw_icmp:
3078 case lltok::kw_fcmp: {
3079 unsigned PredVal, Opc = Lex.getUIntVal();
3080 Constant *Val0, *Val1;
3081 Lex.Lex();
3082 if (ParseCmpPredicate(PredVal, Opc) ||
3083 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3084 ParseGlobalTypeAndValue(Val0) ||
3085 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3086 ParseGlobalTypeAndValue(Val1) ||
3087 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3088 return true;
3089
3090 if (Val0->getType() != Val1->getType())
3091 return Error(ID.Loc, "compare operands must have the same type");
3092
3093 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3094
3095 if (Opc == Instruction::FCmp) {
3096 if (!Val0->getType()->isFPOrFPVectorTy())
3097 return Error(ID.Loc, "fcmp requires floating point operands");
3098 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3099 } else {
3100 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3100, __PRETTY_FUNCTION__))
;
3101 if (!Val0->getType()->isIntOrIntVectorTy() &&
3102 !Val0->getType()->isPtrOrPtrVectorTy())
3103 return Error(ID.Loc, "icmp requires pointer or integer operands");
3104 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3105 }
3106 ID.Kind = ValID::t_Constant;
3107 return false;
3108 }
3109
3110 // Binary Operators.
3111 case lltok::kw_add:
3112 case lltok::kw_fadd:
3113 case lltok::kw_sub:
3114 case lltok::kw_fsub:
3115 case lltok::kw_mul:
3116 case lltok::kw_fmul:
3117 case lltok::kw_udiv:
3118 case lltok::kw_sdiv:
3119 case lltok::kw_fdiv:
3120 case lltok::kw_urem:
3121 case lltok::kw_srem:
3122 case lltok::kw_frem:
3123 case lltok::kw_shl:
3124 case lltok::kw_lshr:
3125 case lltok::kw_ashr: {
3126 bool NUW = false;
3127 bool NSW = false;
3128 bool Exact = false;
3129 unsigned Opc = Lex.getUIntVal();
3130 Constant *Val0, *Val1;
3131 Lex.Lex();
3132 LocTy ModifierLoc = Lex.getLoc();
3133 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3134 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3135 if (EatIfPresent(lltok::kw_nuw))
3136 NUW = true;
3137 if (EatIfPresent(lltok::kw_nsw)) {
3138 NSW = true;
3139 if (EatIfPresent(lltok::kw_nuw))
3140 NUW = true;
3141 }
3142 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3143 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3144 if (EatIfPresent(lltok::kw_exact))
3145 Exact = true;
3146 }
3147 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3148 ParseGlobalTypeAndValue(Val0) ||
3149 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3150 ParseGlobalTypeAndValue(Val1) ||
3151 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3152 return true;
3153 if (Val0->getType() != Val1->getType())
3154 return Error(ID.Loc, "operands of constexpr must have same type");
3155 if (!Val0->getType()->isIntOrIntVectorTy()) {
3156 if (NUW)
3157 return Error(ModifierLoc, "nuw only applies to integer operations");
3158 if (NSW)
3159 return Error(ModifierLoc, "nsw only applies to integer operations");
3160 }
3161 // Check that the type is valid for the operator.
3162 switch (Opc) {
3163 case Instruction::Add:
3164 case Instruction::Sub:
3165 case Instruction::Mul:
3166 case Instruction::UDiv:
3167 case Instruction::SDiv:
3168 case Instruction::URem:
3169 case Instruction::SRem:
3170 case Instruction::Shl:
3171 case Instruction::AShr:
3172 case Instruction::LShr:
3173 if (!Val0->getType()->isIntOrIntVectorTy())
3174 return Error(ID.Loc, "constexpr requires integer operands");
3175 break;
3176 case Instruction::FAdd:
3177 case Instruction::FSub:
3178 case Instruction::FMul:
3179 case Instruction::FDiv:
3180 case Instruction::FRem:
3181 if (!Val0->getType()->isFPOrFPVectorTy())
3182 return Error(ID.Loc, "constexpr requires fp operands");
3183 break;
3184 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-6.0~svn316259/lib/AsmParser/LLParser.cpp"
, 3184)
;
3185 }
3186 unsigned Flags = 0;
3187 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3188 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3189 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3190 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3191 ID.ConstantVal = C;
3192 ID.Kind = ValID::t_Constant;
3193 return false;
3194 }
3195
3196 // Logical Operations
3197 case lltok::kw_and:
3198 case lltok::kw_or:
3199 case lltok::kw_xor: {
3200 unsigned Opc = Lex.getUIntVal();
3201 Constant *Val0, *Val1;
3202 Lex.Lex();
3203 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3204 ParseGlobalTypeAndValue(Val0) ||
3205 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3206 ParseGlobalTypeAndValue(Val1) ||
3207 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3208 return true;
3209 if (Val0->getType() != Val1->getType())
3210 return Error(ID.Loc, "operands of constexpr must have same type");
3211 if (!Val0->getType()->isIntOrIntVectorTy())
3212 return Error(ID.Loc,
3213 "constexpr requires integer or integer vector operands");
3214 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3215 ID.Kind = ValID::t_Constant;
3216 return false;
3217 }
3218
3219 case lltok::kw_getelementptr:
3220 case lltok::kw_shufflevector:
3221 case lltok::kw_insertelement:
3222 case lltok::kw_extractelement:
3223 case lltok::kw_select: {
3224 unsigned Opc = Lex.getUIntVal();
3225 SmallVector<Constant*, 16> Elts;
3226 bool InBounds = false;
3227 Type *Ty;
3228 Lex.Lex();
3229
3230 if (Opc == Instruction::GetElementPtr)
3231 InBounds = EatIfPresent(lltok::kw_inbounds);
3232
3233 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3234 return true;
3235
3236 LocTy ExplicitTypeLoc = Lex.getLoc();
3237 if (Opc == Instruction::GetElementPtr) {
3238 if (ParseType(Ty) ||
3239 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3240 return true;
3241 }
3242
3243 Optional<unsigned> InRangeOp;
3244 if (ParseGlobalValueVector(
3245 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3246 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3247 return true;
3248
3249 if (Opc == Instruction::GetElementPtr) {
3250 if (Elts.size() == 0 ||
3251 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3252 return Error(ID.Loc, "base of getelementptr must be a pointer");
3253
3254 Type *BaseType = Elts[0]->getType();
3255 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3256 if (Ty != BasePointerType->getElementType())
3257 return Error(
3258 ExplicitTypeLoc,
3259 "explicit pointee type doesn't match operand's pointee type");
3260
3261 unsigned GEPWidth =
3262 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3263
3264 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3265 for (Constant *Val : Indices) {
3266 Type *ValTy = Val->getType();
3267 if (!ValTy->isIntOrIntVectorTy())
3268 return Error(ID.Loc, "getelementptr index must be an integer");
3269 if (ValTy->isVectorTy()) {
3270 unsigned ValNumEl = ValTy->getVectorNumElements();
3271 if (GEPWidth && (ValNumEl != GEPWidth))
3272 return Error(
3273 ID.Loc,
3274 "getelementptr vector index has a wrong number of elements");
3275 // GEPWidth may have been unknown because the base is a scalar,
3276 // but it is known now.
3277 GEPWidth = ValNumEl;
3278 }
3279 }
3280
3281 SmallPtrSet<Type*, 4> Visited;
3282 if (!Indices.empty() && !Ty->isSized(&Visited))
3283 return Error(ID.Loc, "base element of getelementptr must be sized");
3284
3285 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3286 return Error(ID.Loc, "invalid getelementptr indices");
3287
3288 if (InRangeOp) {
3289 if (*InRangeOp == 0)
3290 return Error(ID.Loc,
3291 "inrange keyword may not appear on pointer operand");
3292 --*InRangeOp;
3293 }
3294
3295 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3296 InBounds, InRangeOp);
3297 } else if (Opc == Instruction::Select) {
3298 if (Elts.size() != 3)
3299 return Error(ID.Loc, "expected three operands to select");
3300 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3301 Elts[2]))
3302 return Error(ID.Loc, Reason);
3303 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3304 } else if (Opc == Instruction::ShuffleVector) {
3305 if (Elts.size() != 3)
3306 return Error(ID.Loc, "expected three operands to shufflevector");
3307 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3308 return Error(ID.Loc, "invalid operands to shufflevector");
3309 ID.ConstantVal =
3310 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3311 } else if (Opc == Instruction::ExtractElement) {
3312 if (Elts.size() != 2)
3313 return Error(ID.Loc, "expected two operands to extractelement");
3314 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3315 return Error(ID.Loc, "invalid extractelement operands");
3316 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3317 } else {
3318 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3318, __PRETTY_FUNCTION__))
;
3319 if (Elts.size() != 3)
3320 return Error(ID.Loc, "expected three operands to insertelement");
3321 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3322 return Error(ID.Loc, "invalid insertelement operands");
3323 ID.ConstantVal =
3324 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3325 }
3326
3327 ID.Kind = ValID::t_Constant;
3328 return false;
3329 }
3330 }
3331
3332 Lex.Lex();
3333 return false;
3334}
3335
3336/// ParseGlobalValue - Parse a global value with the specified type.
3337bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3338 C = nullptr;
3339 ValID ID;
3340 Value *V = nullptr;
3341 bool Parsed = ParseValID(ID) ||
3342 ConvertValIDToValue(Ty, ID, V, nullptr);
3343 if (V && !(C = dyn_cast<Constant>(V)))
3344 return Error(ID.Loc, "global values must be constants");
3345 return Parsed;
3346}
3347
3348bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3349 Type *Ty = nullptr;
3350 return ParseType(Ty) ||
3351 ParseGlobalValue(Ty, V);
3352}
3353
3354bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3355 C = nullptr;
3356
3357 LocTy KwLoc = Lex.getLoc();
3358 if (!EatIfPresent(lltok::kw_comdat))
3359 return false;
3360
3361 if (EatIfPresent(lltok::lparen)) {
3362 if (Lex.getKind() != lltok::ComdatVar)
3363 return TokError("expected comdat variable");
3364 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3365 Lex.Lex();
3366 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3367 return true;
3368 } else {
3369 if (GlobalName.empty())
3370 return TokError("comdat cannot be unnamed");
3371 C = getComdat(GlobalName, KwLoc);
3372 }
3373
3374 return false;
3375}
3376
3377/// ParseGlobalValueVector
3378/// ::= /*empty*/
3379/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3380bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3381 Optional<unsigned> *InRangeOp) {
3382 // Empty list.
3383 if (Lex.getKind() == lltok::rbrace ||
3384 Lex.getKind() == lltok::rsquare ||
3385 Lex.getKind() == lltok::greater ||
3386 Lex.getKind() == lltok::rparen)
3387 return false;
3388
3389 do {
3390 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3391 *InRangeOp = Elts.size();
3392
3393 Constant *C;
3394 if (ParseGlobalTypeAndValue(C)) return true;
3395 Elts.push_back(C);
3396 } while (EatIfPresent(lltok::comma));
3397
3398 return false;
3399}
3400
3401bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3402 SmallVector<Metadata *, 16> Elts;
3403 if (ParseMDNodeVector(Elts))
3404 return true;
3405
3406 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3407 return false;
3408}
3409
3410/// MDNode:
3411/// ::= !{ ... }
3412/// ::= !7
3413/// ::= !DILocation(...)
3414bool LLParser::ParseMDNode(MDNode *&N) {
3415 if (Lex.getKind() == lltok::MetadataVar)
3416 return ParseSpecializedMDNode(N);
3417
3418 return ParseToken(lltok::exclaim, "expected '!' here") ||
3419 ParseMDNodeTail(N);
3420}
3421
3422bool LLParser::ParseMDNodeTail(MDNode *&N) {
3423 // !{ ... }
3424 if (Lex.getKind() == lltok::lbrace)
3425 return ParseMDTuple(N);
3426
3427 // !42
3428 return ParseMDNodeID(N);
3429}
3430
3431namespace {
3432
3433/// Structure to represent an optional metadata field.
3434template <class FieldTy> struct MDFieldImpl {
3435 typedef MDFieldImpl ImplTy;
3436 FieldTy Val;
3437 bool Seen;
3438
3439 void assign(FieldTy Val) {
3440 Seen = true;
3441 this->Val = std::move(Val);
3442 }
3443
3444 explicit MDFieldImpl(FieldTy Default)
3445 : Val(std::move(Default)), Seen(false) {}
3446};
3447
3448struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3449 uint64_t Max;
3450
3451 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3452 : ImplTy(Default), Max(Max) {}
3453};
3454
3455struct LineField : public MDUnsignedField {
3456 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3457};
3458
3459struct ColumnField : public MDUnsignedField {
3460 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3461};
3462
3463struct DwarfTagField : public MDUnsignedField {
3464 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3465 DwarfTagField(dwarf::Tag DefaultTag)
3466 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3467};
3468
3469struct DwarfMacinfoTypeField : public MDUnsignedField {
3470 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3471 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3472 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3473};
3474
3475struct DwarfAttEncodingField : public MDUnsignedField {
3476 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3477};
3478
3479struct DwarfVirtualityField : public MDUnsignedField {
3480 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3481};
3482
3483struct DwarfLangField : public MDUnsignedField {
3484 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3485};
3486
3487struct DwarfCCField : public MDUnsignedField {
3488 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3489};
3490
3491struct EmissionKindField : public MDUnsignedField {
3492 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3493};
3494
3495struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3496 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3497};
3498
3499struct MDSignedField : public MDFieldImpl<int64_t> {
3500 int64_t Min;
3501 int64_t Max;
3502
3503 MDSignedField(int64_t Default = 0)
3504 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3505 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3506 : ImplTy(Default), Min(Min), Max(Max) {}
3507};
3508
3509struct MDBoolField : public MDFieldImpl<bool> {
3510 MDBoolField(bool Default = false) : ImplTy(Default) {}
3511};
3512
3513struct MDField : public MDFieldImpl<Metadata *> {
3514 bool AllowNull;
3515
3516 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3517};
3518
3519struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3520 MDConstant() : ImplTy(nullptr) {}
3521};
3522
3523struct MDStringField : public MDFieldImpl<MDString *> {
3524 bool AllowEmpty;
3525 MDStringField(bool AllowEmpty = true)
3526 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3527};
3528
3529struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3530 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3531};
3532
3533struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3534 ChecksumKindField() : ImplTy(DIFile::CSK_None) {}
3535 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3536};
3537
3538} // end anonymous namespace
3539
3540namespace llvm {
3541
3542template <>
3543bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3544 MDUnsignedField &Result) {
3545 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3546 return TokError("expected unsigned integer");
3547
3548 auto &U = Lex.getAPSIntVal();
3549 if (U.ugt(Result.Max))
3550 return TokError("value for '" + Name + "' too large, limit is " +
3551 Twine(Result.Max));
3552 Result.assign(U.getZExtValue());
3553 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3553, __PRETTY_FUNCTION__))
;
3554 Lex.Lex();
3555 return false;
3556}
3557
3558template <>
3559bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3560 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3561}
3562template <>
3563bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3564 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3565}
3566
3567template <>
3568bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3569 if (Lex.getKind() == lltok::APSInt)
3570 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3571
3572 if (Lex.getKind() != lltok::DwarfTag)
3573 return TokError("expected DWARF tag");
3574
3575 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3576 if (Tag == dwarf::DW_TAG_invalid)
3577 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3578 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3578, __PRETTY_FUNCTION__))
;
3579
3580 Result.assign(Tag);
3581 Lex.Lex();
3582 return false;
3583}
3584
3585template <>
3586bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3587 DwarfMacinfoTypeField &Result) {
3588 if (Lex.getKind() == lltok::APSInt)
3589 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3590
3591 if (Lex.getKind() != lltok::DwarfMacinfo)
3592 return TokError("expected DWARF macinfo type");
3593
3594 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3595 if (Macinfo == dwarf::DW_MACINFO_invalid)
3596 return TokError(
3597 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3598 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3598, __PRETTY_FUNCTION__))
;
3599
3600 Result.assign(Macinfo);
3601 Lex.Lex();
3602 return false;
3603}
3604
3605template <>
3606bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3607 DwarfVirtualityField &Result) {
3608 if (Lex.getKind() == lltok::APSInt)
3609 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3610
3611 if (Lex.getKind() != lltok::DwarfVirtuality)
3612 return TokError("expected DWARF virtuality code");
3613
3614 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3615 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3616 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3617 Lex.getStrVal() + "'");
3618 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3618, __PRETTY_FUNCTION__))
;
3619 Result.assign(Virtuality);
3620 Lex.Lex();
3621 return false;
3622}
3623
3624template <>
3625bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3626 if (Lex.getKind() == lltok::APSInt)
3627 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3628
3629 if (Lex.getKind() != lltok::DwarfLang)
3630 return TokError("expected DWARF language");
3631
3632 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3633 if (!Lang)
3634 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3635 "'");
3636 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3636, __PRETTY_FUNCTION__))
;
3637 Result.assign(Lang);
3638 Lex.Lex();
3639 return false;
3640}
3641
3642template <>
3643bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3644 if (Lex.getKind() == lltok::APSInt)
3645 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3646
3647 if (Lex.getKind() != lltok::DwarfCC)
3648 return TokError("expected DWARF calling convention");
3649
3650 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3651 if (!CC)
3652 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3653 "'");
3654 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3654, __PRETTY_FUNCTION__))
;
3655 Result.assign(CC);
3656 Lex.Lex();
3657 return false;
3658}
3659
3660template <>
3661bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3662 if (Lex.getKind() == lltok::APSInt)
3663 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3664
3665 if (Lex.getKind() != lltok::EmissionKind)
3666 return TokError("expected emission kind");
3667
3668 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3669 if (!Kind)
3670 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3671 "'");
3672 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3672, __PRETTY_FUNCTION__))
;
3673 Result.assign(*Kind);
3674 Lex.Lex();
3675 return false;
3676}
3677
3678template <>
3679bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3680 DwarfAttEncodingField &Result) {
3681 if (Lex.getKind() == lltok::APSInt)
3682 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3683
3684 if (Lex.getKind() != lltok::DwarfAttEncoding)
3685 return TokError("expected DWARF type attribute encoding");
3686
3687 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3688 if (!Encoding)
3689 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3690 Lex.getStrVal() + "'");
3691 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3691, __PRETTY_FUNCTION__))
;
3692 Result.assign(Encoding);
3693 Lex.Lex();
3694 return false;
3695}
3696
3697/// DIFlagField
3698/// ::= uint32
3699/// ::= DIFlagVector
3700/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3701template <>
3702bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3703
3704 // Parser for a single flag.
3705 auto parseFlag = [&](DINode::DIFlags &Val) {
3706 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3707 uint32_t TempVal = static_cast<uint32_t>(Val);
3708 bool Res = ParseUInt32(TempVal);
3709 Val = static_cast<DINode::DIFlags>(TempVal);
3710 return Res;
3711 }
3712
3713 if (Lex.getKind() != lltok::DIFlag)
3714 return TokError("expected debug info flag");
3715
3716 Val = DINode::getFlag(Lex.getStrVal());
3717 if (!Val)
3718 return TokError(Twine("invalid debug info flag flag '") +
3719 Lex.getStrVal() + "'");
3720 Lex.Lex();
3721 return false;
3722 };
3723
3724 // Parse the flags and combine them together.
3725 DINode::DIFlags Combined = DINode::FlagZero;
3726 do {
3727 DINode::DIFlags Val;
3728 if (parseFlag(Val))
3729 return true;
3730 Combined |= Val;
3731 } while (EatIfPresent(lltok::bar));
3732
3733 Result.assign(Combined);
3734 return false;
3735}
3736
3737template <>
3738bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3739 MDSignedField &Result) {
3740 if (Lex.getKind() != lltok::APSInt)
3741 return TokError("expected signed integer");
3742
3743 auto &S = Lex.getAPSIntVal();
3744 if (S < Result.Min)
3745 return TokError("value for '" + Name + "' too small, limit is " +
3746 Twine(Result.Min));
3747 if (S > Result.Max)
3748 return TokError("value for '" + Name + "' too large, limit is " +
3749 Twine(Result.Max));
3750 Result.assign(S.getExtValue());
3751 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3751, __PRETTY_FUNCTION__))
;
3752 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3752, __PRETTY_FUNCTION__))
;
3753 Lex.Lex();
3754 return false;
3755}
3756
3757template <>
3758bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3759 switch (Lex.getKind()) {
3760 default:
3761 return TokError("expected 'true' or 'false'");
3762 case lltok::kw_true:
3763 Result.assign(true);
3764 break;
3765 case lltok::kw_false:
3766 Result.assign(false);
3767 break;
3768 }
3769 Lex.Lex();
3770 return false;
3771}
3772
3773template <>
3774bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3775 if (Lex.getKind() == lltok::kw_null) {
3776 if (!Result.AllowNull)
3777 return TokError("'" + Name + "' cannot be null");
3778 Lex.Lex();
3779 Result.assign(nullptr);
3780 return false;
3781 }
3782
3783 Metadata *MD;
3784 if (ParseMetadata(MD, nullptr))
3785 return true;
3786
3787 Result.assign(MD);
3788 return false;
3789}
3790
3791template <>
3792bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3793 LocTy ValueLoc = Lex.getLoc();
3794 std::string S;
3795 if (ParseStringConstant(S))
3796 return true;
3797
3798 if (!Result.AllowEmpty && S.empty())
3799 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3800
3801 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3802 return false;
3803}
3804
3805template <>
3806bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3807 SmallVector<Metadata *, 4> MDs;
3808 if (ParseMDNodeVector(MDs))
3809 return true;
3810
3811 Result.assign(std::move(MDs));
3812 return false;
3813}
3814
3815template <>
3816bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3817 ChecksumKindField &Result) {
3818 if (Lex.getKind() != lltok::ChecksumKind)
3819 return TokError(
3820 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
3821
3822 DIFile::ChecksumKind CSKind = DIFile::getChecksumKind(Lex.getStrVal());
3823
3824 Result.assign(CSKind);
3825 Lex.Lex();
3826 return false;
3827}
3828
3829} // end namespace llvm
3830
3831template <class ParserTy>
3832bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3833 do {
3834 if (Lex.getKind() != lltok::LabelStr)
3835 return TokError("expected field label here");
3836
3837 if (parseField())
3838 return true;
3839 } while (EatIfPresent(lltok::comma));
3840
3841 return false;
3842}
3843
3844template <class ParserTy>
3845bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3846 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3846, __PRETTY_FUNCTION__))
;
3847 Lex.Lex();
3848
3849 if (ParseToken(lltok::lparen, "expected '(' here"))
3850 return true;
3851 if (Lex.getKind() != lltok::rparen)
3852 if (ParseMDFieldsImplBody(parseField))
3853 return true;
3854
3855 ClosingLoc = Lex.getLoc();
3856 return ParseToken(lltok::rparen, "expected ')' here");
3857}
3858
3859template <class FieldTy>
3860bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3861 if (Result.Seen)
3862 return TokError("field '" + Name + "' cannot be specified more than once");
3863
3864 LocTy Loc = Lex.getLoc();
3865 Lex.Lex();
3866 return ParseMDField(Loc, Name, Result);
3867}
3868
3869bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3870 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~svn316259/lib/AsmParser/LLParser.cpp"
, 3870, __PRETTY_FUNCTION__))
;
3871
3872#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3873 if (Lex.getStrVal() == #CLASS) \
3874 return Parse##CLASS(N, IsDistinct);
3875#include "llvm/IR/Metadata.def"
3876
3877 return TokError("expected metadata type");
3878}
3879
3880#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3881#define NOP_FIELD(NAME, TYPE, INIT)
3882#define REQUIRE_FIELD(NAME, TYPE, INIT) \
3883 if (!NAME.Seen) \
3884 return Error(ClosingLoc, "missing required field '" #NAME "'");
3885#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3886 if (Lex.getStrVal() == #NAME) \
3887 return ParseMDField(#NAME, NAME);
3888#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)
\
3889 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3890 do { \
3891 LocTy ClosingLoc; \
3892 if (ParseMDFieldsImpl([&]() -> bool { \
3893 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3894 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3895 }, ClosingLoc)) \
3896 return true; \
3897 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3898 } while (false)
3899#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
3900 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3901
3902/// ParseDILocationFields:
3903/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3904bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3905#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3906 OPTIONAL(line, LineField, ); \
3907 OPTIONAL(column, ColumnField, ); \
3908 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3909 OPTIONAL(inlinedAt, MDField, );
3910 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)
;
3911#undef VISIT_MD_FIELDS
3912
3913 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))
3914 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))
;
3915 return false;
3916}
3917
3918/// ParseGenericDINode:
3919/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3920bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3921#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3922 REQUIRED(tag, DwarfTagField, ); \
3923 OPTIONAL(header, MDStringField, ); \
3924 OPTIONAL(operands, MDFieldList, );
3925 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)
;
3926#undef VISIT_MD_FIELDS
3927
3928 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
3929 (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))
;
3930 return false;
3931}
3932
3933/// ParseDISubrange:
3934/// ::= !DISubrange(count: 30, lowerBound: 2)
3935bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3936#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3937 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX(9223372036854775807L))); \
3938 OPTIONAL(lowerBound, MDSignedField, );
3939 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)
;
3940#undef VISIT_MD_FIELDS
3941
3942 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))
;
3943 return false;
3944}
3945
3946/// ParseDIEnumerator:
3947/// ::= !DIEnumerator(value: 30, name: "SomeKind")
3948bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3949#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3950 REQUIRED(name, MDStringField, ); \
3951 REQUIRED(value, MDSignedField, );
3952 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)
;
3953#undef VISIT_MD_FIELDS
3954
3955 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))
;
3956 return false;
3957}
3958
3959/// ParseDIBasicType:
3960/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3961bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3962#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3963 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3964 OPTIONAL(name, MDStringField, ); \
3965 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
3966 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
3967 OPTIONAL(encoding, DwarfAttEncodingField, );
3968 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)
;
3969#undef VISIT_MD_FIELDS
3970
3971 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
))
3972 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
))
;
3973 return false;
3974}
3975
3976/// ParseDIDerivedType:
3977/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3978/// line: 7, scope: !1, baseType: !2, size: 32,
3979/// align: 32, offset: 0, flags: 0, extraData: !3,
3980/// dwarfAddressSpace: 3)
3981bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3982#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3983 REQUIRED(tag, DwarfTagField, ); \
3984 OPTIONAL(name, MDStringField, ); \
3985 OPTIONAL(file, MDField, ); \
3986 OPTIONAL(line, LineField, ); \
3987 OPTIONAL(scope, MDField, ); \
3988 REQUIRED(baseType, MDField, ); \
3989 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
3990 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
3991 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
3992 OPTIONAL(flags, DIFlagField, ); \
3993 OPTIONAL(extraData, MDField, ); \
3994 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
3995 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)
;
3996#undef VISIT_MD_FIELDS
3997
3998 Optional<unsigned> DWARFAddressSpace;
3999 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4000 DWARFAddressSpace = dwarfAddressSpace.Val;
4001
4002 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))
4003 (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))
4004 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))
4005 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))
4006 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))
;
4007 return false;
4008}
4009
4010bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4011#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4012 REQUIRED(tag, DwarfTagField, ); \
4013 OPTIONAL(name, MDStringField, ); \
4014 OPTIONAL(file, MDField, ); \
4015 OPTIONAL(line, LineField, ); \
4016 OPTIONAL(scope, MDField, ); \
4017 OPTIONAL(baseType, MDField, ); \
4018 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4019 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4020 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4021 OPTIONAL(flags, DIFlagField, ); \
4022 OPTIONAL(elements, MDField, ); \
4023 OPTIONAL(runtimeLang, DwarfLangField, ); \
4024 OPTIONAL(vtableHolder, MDField, ); \
4025 OPTIONAL(templateParams, MDField, ); \
4026 OPTIONAL(identifier, MDStringField, );
4027 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)
;
4028#undef VISIT_MD_FIELDS
4029
4030 // If this has an identifier try to build an ODR type.
4031 if (identifier.Val)
4032 if (auto *CT = DICompositeType::buildODRType(
4033 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4034 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4035 elements.Val, runtimeLang.Val, vtableHolder.Val,
4036 templateParams.Val)) {
4037 Result = CT;
4038 return false;
4039 }
4040
4041 // Create a new node, and save it in the context if it belongs in the type
4042 // map.
4043 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))
4044 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))
4045 (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))
4046 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))
4047 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))
;
4048 return false;
4049}
4050
4051bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4052#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4053 OPTIONAL(flags, DIFlagField, ); \
4054 OPTIONAL(cc, DwarfCCField, ); \
4055 REQUIRED(types, MDField, );
4056 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)
;
4057#undef VISIT_MD_FIELDS
4058
4059 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4060 (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))
;
4061 return false;
4062}
4063
4064/// ParseDIFileType:
4065/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir"
4066/// checksumkind: CSK_MD5,
4067/// checksum: "000102030405060708090a0b0c0d0e0f")
4068bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4069#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4070 REQUIRED(filename, MDStringField, ); \
4071 REQUIRED(directory, MDStringField, ); \
4072 OPTIONAL(checksumkind, ChecksumKindField, ); \
4073 OPTIONAL(checksum, MDStringField, );
4074 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)
;
4075#undef VISIT_MD_FIELDS
4076
4077 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)
)
4078 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)
)
;
4079 return false;
4080}
4081
4082/// ParseDICompileUnit:
4083/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4084/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4085/// splitDebugFilename: "abc.debug",
4086/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4087/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4088bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4089 if (!IsDistinct)
4090 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4091
4092#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4093 REQUIRED(language, DwarfLangField, ); \
4094 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4095 OPTIONAL(producer, MDStringField, ); \
4096 OPTIONAL(isOptimized, MDBoolField, ); \
4097 OPTIONAL(flags, MDStringField, ); \
4098 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4099 OPTIONAL(splitDebugFilename, MDStringField, ); \
4100 OPTIONAL(emissionKind, EmissionKindField, ); \
4101 OPTIONAL(enums, MDField, ); \
4102 OPTIONAL(retainedTypes, MDField, ); \
4103 OPTIONAL(globals, MDField, ); \
4104 OPTIONAL(imports, MDField, ); \
4105 OPTIONAL(macros, MDField, ); \
4106 OPTIONAL(dwoId, MDUnsignedField, ); \
4107 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4108 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4109 OPTIONAL(gnuPubnames, MDBoolField, = false);
4110 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)
;
4111#undef VISIT_MD_FIELDS
4112
4113 Result = DICompileUnit::getDistinct(
4114 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4115 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4116 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4117 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4118 return false;
4119}
4120
4121/// ParseDISubprogram:
4122/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4123/// file: !1, line: 7, type: !2, isLocal: false,
4124/// isDefinition: true, scopeLine: 8, containingType: !3,
4125/// virtuality: DW_VIRTUALTIY_pure_virtual,
4126/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4127/// isOptimized: false, templateParams: !4, declaration: !5,
4128/// variables: !6, thrownTypes: !7)
4129bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4130 auto Loc = Lex.getLoc();
4131#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4132 OPTIONAL(scope, MDField, ); \
4133 OPTIONAL(name, MDStringField, ); \
4134 OPTIONAL(linkageName, MDStringField, ); \
4135 OPTIONAL(file, MDField, ); \
4136 OPTIONAL(line, LineField, ); \
4137 OPTIONAL(type, MDField, ); \
4138 OPTIONAL(isLocal, MDBoolField, ); \
4139 OPTIONAL(isDefinition, MDBoolField, (true)); \
4140 OPTIONAL(scopeLine, LineField, ); \
4141 OPTIONAL(containingType, MDField, ); \
4142 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4143 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4144 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4145 OPTIONAL(flags, DIFlagField, ); \
4146 OPTIONAL(isOptimized, MDBoolField, ); \
4147 OPTIONAL(unit, MDField, ); \
4148 OPTIONAL(templateParams, MDField, ); \
4149 OPTIONAL(declaration, MDField, ); \
4150 OPTIONAL(variables, MDField, ); \
4151 OPTIONAL(thrownTypes, MDField, );
4152 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)
;
4153#undef VISIT_MD_FIELDS
4154
4155 if (isDefinition.Val && !IsDistinct)
4156 return Lex.Error(
4157 Loc,
4158 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4159
4160 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))
4161 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))
4162 (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))
4163 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))
4164 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))
4165 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))
4166 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))
;
4167 return false;
4168}
4169
4170/// ParseDILexicalBlock:
4171/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4172bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4173#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4174 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4175 OPTIONAL(file, MDField, ); \
4176 OPTIONAL(line, LineField, ); \
4177 OPTIONAL(column, ColumnField, );
4178 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)
;
4179#undef VISIT_MD_FIELDS
4180
4181 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))
4182 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))
;
4183 return false;
4184}
4185
4186/// ParseDILexicalBlockFile:
4187/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4188bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4189#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4190 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4191 OPTIONAL(file, MDField, ); \
4192 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
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 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4197 (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))
;
4198 return false;
4199}
4200
4201/// ParseDINamespace:
4202/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4203bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4204#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4205 REQUIRED(scope, MDField, ); \
4206 OPTIONAL(name, MDStringField, ); \
4207 OPTIONAL(exportSymbols, MDBoolField, );
4208 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)
;
4209#undef VISIT_MD_FIELDS
4210
4211 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4212 (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))
;
4213 return false;
4214}
4215
4216/// ParseDIMacro:
4217/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4218bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4219#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4220 REQUIRED(type, DwarfMacinfoTypeField, ); \
4221 OPTIONAL(line, LineField, ); \
4222 REQUIRED(name, MDStringField, ); \
4223 OPTIONAL(value, MDStringField, );
4224 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)
;
4225#undef VISIT_MD_FIELDS
4226
4227 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))
4228 (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))
;
4229 return false;
4230}
4231
4232/// ParseDIMacroFile:
4233/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4234bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4235#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4236 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4237 OPTIONAL(line, LineField, ); \
4238 REQUIRED(file, MDField, ); \
4239 OPTIONAL(nodes, MDField, );
4240 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)
;
4241#undef VISIT_MD_FIELDS
4242
4243 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))
4244 (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))
;
4245 return false;
4246}
4247
4248/// ParseDIModule:
4249/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4250/// includePath: "/usr/include", isysroot: "/")
4251bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4252#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4253 REQUIRED(scope, MDField, ); \
4254 REQUIRED(name, MDStringField, ); \
4255 OPTIONAL(configMacros, MDStringField, ); \
4256 OPTIONAL(includePath, MDStringField, ); \
4257 OPTIONAL(isysroot, MDStringField, );
4258 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)
;
4259#undef VISIT_MD_FIELDS
4260
4261 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))
4262 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))
;
4263 return false;
4264}
4265
4266/// ParseDITemplateTypeParameter:
4267/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4268bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4269#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4270 OPTIONAL(name, MDStringField, ); \
4271 REQUIRED(type, MDField, );
4272 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)
;
4273#undef VISIT_MD_FIELDS
4274
4275 Result =
4276 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4277 return false;
4278}
4279
4280/// ParseDITemplateValueParameter:
4281/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4282/// name: "V", type: !1, value: i32 7)
4283bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4284#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4285 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4286 OPTIONAL(name, MDStringField, ); \
4287 OPTIONAL(type, MDField, ); \
4288 REQUIRED(value, MDField, );
4289 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)
;
4290#undef VISIT_MD_FIELDS
4291
4292 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))
4293 (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))
;
4294 return false;
4295}
4296
4297/// ParseDIGlobalVariable:
4298/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4299/// file: !1, line: 7, type: !2, isLocal: false,
4300/// isDefinition: true, declaration: !3, align: 8)
4301bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4302#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4303 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4304 OPTIONAL(scope, MDField, ); \
4305 OPTIONAL(linkageName, MDStringField, ); \
4306 OPTIONAL(file, MDField, ); \
4307 OPTIONAL(line, LineField, ); \
4308 OPTIONAL(type, MDField, ); \
4309 OPTIONAL(isLocal, MDBoolField, ); \
4310 OPTIONAL(isDefinition, MDBoolField, (true)); \
4311 OPTIONAL(declaration, MDField, ); \
4312 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
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 = 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))
4317 (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))
4318 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))
4319 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))
;
4320 return false;
4321}
4322
4323/// ParseDILocalVariable:
4324/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4325/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4326/// align: 8)
4327/// ::= !DILocalVariable(scope: !0, name: "foo",
4328/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4329/// align: 8)
4330bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4331#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4332 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4333 OPTIONAL(name, MDStringField, ); \
4334 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4335 OPTIONAL(file, MDField, ); \
4336 OPTIONAL(line, LineField, ); \
4337 OPTIONAL(type, MDField, ); \
4338 OPTIONAL(flags, DIFlagField, ); \
4339 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4340 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)
;
4341#undef VISIT_MD_FIELDS
4342
4343 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))
4344 (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))
4345 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))
;
4346 return false;
4347}
4348
4349/// ParseDIExpression:
4350/// ::= !DIExpression(0, 7, -1)
4351bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4352 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~svn316259/lib/AsmParser/LLParser.cpp"
, 4352, __PRETTY_FUNCTION__))
;
4353 Lex.Lex();
4354
4355 if (ParseToken(lltok::lparen, "expected '(' here"))
4356 return true;
4357
4358 SmallVector<uint64_t, 8> Elements;
4359 if (Lex.getKind() != lltok::rparen)
4360 do {
4361 if (Lex.getKind() == lltok::DwarfOp) {
4362 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4363 Lex.Lex();
4364 Elements.push_back(Op);
4365 continue;
4366 }
4367 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4368 }
4369
4370 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4371 return TokError("expected unsigned integer");
4372
4373 auto &U = Lex.getAPSIntVal();
4374 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4375 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4376 Elements.push_back(U.getZExtValue());
4377 Lex.Lex();
4378 } while (EatIfPresent(lltok::comma));
4379
4380 if (ParseToken(lltok::rparen, "expected ')' here"))
4381 return true;
4382
4383 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4384 return false;
4385}
4386
4387/// ParseDIGlobalVariableExpression:
4388/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4389bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4390 bool IsDistinct) {
4391#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4392 REQUIRED(var, MDField, ); \
4393 REQUIRED(expr, MDField, );
4394 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)
;
4395#undef VISIT_MD_FIELDS
4396
4397 Result =
4398 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4399 return false;
4400}
4401
4402/// ParseDIObjCProperty:
4403/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4404/// getter: "getFoo", attributes: 7, type: !2)
4405bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4406#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4407 OPTIONAL(name, MDStringField, ); \
4408 OPTIONAL(file, MDField, ); \
4409 OPTIONAL(line, LineField, ); \
4410 OPTIONAL(setter, MDStringField, ); \
4411 OPTIONAL(getter, MDStringField, ); \
4412 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4413 OPTIONAL(type, MDField, );
4414 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)
;
4415#undef VISIT_MD_FIELDS
4416
4417 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))
4418 (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))
4419 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))
;
4420 return false;
4421}
4422
4423/// ParseDIImportedEntity:
4424/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4425/// line: 7, name: "foo")
4426bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4427#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4428 REQUIRED(tag, DwarfTagField, ); \
4429 REQUIRED(scope, MDField, ); \
4430 OPTIONAL(entity, MDField, ); \
4431 OPTIONAL(file, MDField, ); \
4432 OPTIONAL(line, LineField, ); \
4433 OPTIONAL(name, MDStringField, );
4434 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)
;
4435#undef VISIT_MD_FIELDS
4436
4437 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))
4438 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))
4439 (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))
;
4440 return false;
4441}
4442
4443#undef PARSE_MD_FIELD
4444#undef NOP_FIELD
4445#undef REQUIRE_FIELD
4446#undef DECLARE_FIELD
4447
4448/// ParseMetadataAsValue
4449/// ::= metadata i32 %local
4450/// ::= metadata i32 @global
4451/// ::= metadata i32 7
4452/// ::= metadata !0
4453/// ::= metadata !{...}
4454/// ::= metadata !"string"
4455bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4456 // Note: the type 'metadata' has already been parsed.
4457 Metadata *MD;
4458 if (ParseMetadata(MD, &PFS))
4459 return true;
4460
4461 V = MetadataAsValue::get(Context, MD);
4462 return false;
4463}
4464
4465/// ParseValueAsMetadata
4466/// ::= i32 %local
4467/// ::= i32 @global
4468/// ::= i32 7
4469bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4470 PerFunctionState *PFS) {
4471 Type *Ty;
4472 LocTy Loc;
4473 if (ParseType(Ty, TypeMsg, Loc))
4474 return true;
4475 if (Ty->isMetadataTy())
4476 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4477
4478 Value *V;
4479 if (ParseValue(Ty, V, PFS))
4480 return true;
4481
4482 MD = ValueAsMetadata::get(V);
4483 return false;
4484}
4485
4486/// ParseMetadata
4487/// ::= i32 %local
4488/// ::= i32 @global
4489/// ::= i32 7
4490/// ::= !42
4491/// ::= !{...}
4492/// ::= !"string"
4493/// ::= !DILocation(...)
4494bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4495 if (Lex.getKind() == lltok::MetadataVar) {
4496 MDNode *N;
4497 if (ParseSpecializedMDNode(N))
4498 return true;
4499 MD = N;
4500 return false;
4501 }
4502
4503 // ValueAsMetadata:
4504 // <type> <value>
4505 if (Lex.getKind() != lltok::exclaim)
4506 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4507
4508 // '!'.
4509 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~svn316259/lib/AsmParser/LLParser.cpp"
, 4509, __PRETTY_FUNCTION__))
;
4510 Lex.Lex();
4511
4512 // MDString:
4513 // ::= '!' STRINGCONSTANT
4514 if (Lex.getKind() == lltok::StringConstant) {
4515 MDString *S;
4516 if (ParseMDString(S))
4517 return true;
4518 MD = S;
4519 return false;
4520 }
4521
4522 // MDNode:
4523 // !{ ... }
4524 // !7
4525 MDNode *N;
4526 if (ParseMDNodeTail(N))
4527 return true;
4528 MD = N;
4529 return false;
4530}
4531
4532//===----------------------------------------------------------------------===//
4533// Function Parsing.
4534//===----------------------------------------------------------------------===//
4535
4536bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4537 PerFunctionState *PFS) {
4538 if (Ty->isFunctionTy())
4539 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4540
4541 switch (ID.Kind) {
4542 case ValID::t_LocalID:
4543 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4544 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4545 return V == nullptr;
4546 case ValID::t_LocalName:
4547 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4548 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4549 return V == nullptr;
4550 case ValID::t_InlineAsm: {
4551 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4552 return Error(ID.Loc, "invalid type for inline asm constraint string");
4553 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4554 (ID.UIntVal >> 1) & 1,
4555 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4556 return false;
4557 }
4558 case ValID::t_GlobalName:
4559 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4560 return V == nullptr;
4561 case ValID::t_GlobalID:
4562 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4563 return V == nullptr;
4564 case ValID::t_APSInt:
4565 if (!Ty->isIntegerTy())
4566 return Error(ID.Loc, "integer constant must have integer type");
4567 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4568 V = ConstantInt::get(Context, ID.APSIntVal);
4569 return false;
4570 case ValID::t_APFloat:
4571 if (!Ty->isFloatingPointTy() ||
4572 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4573 return Error(ID.Loc, "floating point constant invalid for type");
4574
4575 // The lexer has no type info, so builds all half, float, and double FP
4576 // constants as double. Fix this here. Long double does not need this.
4577 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4578 bool Ignored;
4579 if (Ty->isHalfTy())
4580 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4581 &Ignored);
4582 else if (Ty->isFloatTy())
4583 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4584 &Ignored);
4585 }
4586 V = ConstantFP::get(Context, ID.APFloatVal);
4587
4588 if (V->getType() != Ty)
4589 return Error(ID.Loc, "floating point constant does not have type '" +
4590 getTypeString(Ty) + "'");
4591
4592 return false;
4593 case ValID::t_Null:
4594 if (!Ty->isPointerTy())
4595 return Error(ID.Loc, "null must be a pointer type");
4596 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4597 return false;
4598 case ValID::t_Undef:
4599 // FIXME: LabelTy should not be a first-class type.
4600 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4601 return Error(ID.Loc, "invalid type for undef constant");
4602 V = UndefValue::get(Ty);
4603 return false;
4604 case ValID::t_EmptyArray:
4605 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4606 return Error(ID.Loc, "invalid empty array initializer");
4607 V = UndefValue::get(Ty);
4608 return false;
4609 case ValID::t_Zero:
4610 // FIXME: LabelTy should not be a first-class type.
4611 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4612 return Error(ID.Loc, "invalid type for null constant");
4613 V = Constant::getNullValue(Ty);
4614 return false;
4615 case ValID::t_None:
4616 if (!Ty->isTokenTy())
4617 return Error(ID.Loc, "invalid type for none constant");
4618 V = Constant::getNullValue(Ty);
4619 return false;
4620 case ValID::t_Constant:
4621 if (ID.ConstantVal->getType() != Ty)
4622 return Error(ID.Loc, "constant expression type mismatch");
4623
4624 V = ID.ConstantVal;
4625 return false;
4626 case ValID::t_ConstantStruct:
4627 case ValID::t_PackedConstantStruct:
4628 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4629 if (ST->getNumElements() != ID.UIntVal)
4630 return Error(ID.Loc,
4631 "initializer with struct type has wrong # elements");
4632 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4633 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4634
4635 // Verify that the elements are compatible with the structtype.
4636 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4637 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4638 return Error(ID.Loc, "element " + Twine(i) +
4639 " of struct initializer doesn't match struct element type");
4640
4641 V = ConstantStruct::get(
4642 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4643 } else
4644 return Error(ID.Loc, "constant expression type mismatch");
4645 return false;
4646 }
4647 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-6.0~svn316259/lib/AsmParser/LLParser.cpp"
, 4647)
;
4648}
4649
4650bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4651 C = nullptr;
4652 ValID ID;
4653 auto Loc = Lex.getLoc();
4654 if (ParseValID(ID, /*PFS=*/nullptr))
4655 return true;
4656 switch (ID.Kind) {
4657 case ValID::t_APSInt:
4658 case ValID::t_APFloat:
4659 case ValID::t_Undef:
4660 case ValID::t_Constant:
4661 case ValID::t_ConstantStruct:
4662 case ValID::t_PackedConstantStruct: {
4663 Value *V;
4664 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4665 return true;
4666 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~svn316259/lib/AsmParser/LLParser.cpp"
, 4666, __PRETTY_FUNCTION__))
;
4667 C = cast<Constant>(V);
4668 return false;
4669 }
4670 case ValID::t_Null:
4671 C = Constant::getNullValue(Ty);
4672 return false;
4673 default:
4674 return Error(Loc, "expected a constant value");
4675 }
4676}
4677
4678bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4679 V = nullptr;
4680 ValID ID;
4681 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4682}
4683
4684bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4685 Type *Ty = nullptr;
4686 return ParseType(Ty) ||
4687 ParseValue(Ty, V, PFS);
4688}
4689
4690bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4691 PerFunctionState &PFS) {
4692 Value *V;
4693 Loc = Lex.getLoc();
4694 if (ParseTypeAndValue(V, PFS)) return true;
4695 if (!isa<BasicBlock>(V))
4696 return Error(Loc, "expected a basic block");
4697 BB = cast<BasicBlock>(V);
4698 return false;
4699}
4700
4701/// FunctionHeader
4702/// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4703/// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4704/// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4705bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4706 // Parse the linkage.
4707 LocTy LinkageLoc = Lex.getLoc();
4708 unsigned Linkage;
4709
4710 unsigned Visibility;
4711 unsigned DLLStorageClass;
4712 AttrBuilder RetAttrs;
4713 unsigned CC;
4714 bool HasLinkage;
4715 Type *RetType = nullptr;
4716 LocTy RetTypeLoc = Lex.getLoc();
4717 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
4718 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4719 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4720 return true;
4721
4722 // Verify that the linkage is ok.
4723 switch ((GlobalValue::LinkageTypes)Linkage) {
4724 case GlobalValue::ExternalLinkage:
4725 break; // always ok.
4726 case GlobalValue::ExternalWeakLinkage:
4727 if (isDefine)
4728 return Error(LinkageLoc, "invalid linkage for function definition");
4729 break;
4730 case GlobalValue::PrivateLinkage:
4731 case GlobalValue::InternalLinkage:
4732 case GlobalValue::AvailableExternallyLinkage:
4733 case GlobalValue::LinkOnceAnyLinkage:
4734 case GlobalValue::LinkOnceODRLinkage:
4735 case GlobalValue::WeakAnyLinkage:
4736 case GlobalValue::WeakODRLinkage:
4737 if (!isDefine)
4738 return Error(LinkageLoc, "invalid linkage for function declaration");
4739 break;
4740 case GlobalValue::AppendingLinkage:
4741 case GlobalValue::CommonLinkage:
4742 return Error(LinkageLoc, "invalid function linkage type");
4743 }
4744
4745 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4746 return Error(LinkageLoc,
4747 "symbol with local linkage must have default visibility");
4748
4749 if (!FunctionType::isValidReturnType(RetType))
4750 return Error(RetTypeLoc, "invalid function return type");
4751
4752 LocTy NameLoc = Lex.getLoc();
4753
4754 std::string FunctionName;
4755 if (Lex.getKind() == lltok::GlobalVar) {
4756 FunctionName = Lex.getStrVal();
4757 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4758 unsigned NameID = Lex.getUIntVal();
4759
4760 if (NameID != NumberedVals.size())
4761 return TokError("function expected to be numbered '%" +
4762 Twine(NumberedVals.size()) + "'");
4763 } else {
4764 return TokError("expected function name");
4765 }
4766
4767 Lex.Lex();
4768
4769 if (Lex.getKind() != lltok::lparen)
4770 return TokError("expected '(' in function argument list");
4771
4772 SmallVector<ArgInfo, 8> ArgList;
4773 bool isVarArg;
4774 AttrBuilder FuncAttrs;
4775 std::vector<unsigned> FwdRefAttrGrps;
4776 LocTy BuiltinLoc;
4777 std::string Section;
4778 unsigned Alignment;
4779 std::string GC;
4780 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4781 Constant *Prefix = nullptr;
4782 Constant *Prologue = nullptr;
4783 Constant *PersonalityFn = nullptr;
4784 Comdat *C;
4785
4786 if (ParseArgumentList(ArgList, isVarArg) ||
4787 ParseOptionalUnnamedAddr(UnnamedAddr) ||
4788 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4789 BuiltinLoc) ||
4790 (EatIfPresent(lltok::kw_section) &&
4791 ParseStringConstant(Section)) ||
4792 parseOptionalComdat(FunctionName, C) ||
4793 ParseOptionalAlignment(Alignment) ||
4794 (EatIfPresent(lltok::kw_gc) &&
4795 ParseStringConstant(GC)) ||
4796 (EatIfPresent(lltok::kw_prefix) &&
4797 ParseGlobalTypeAndValue(Prefix)) ||
4798 (EatIfPresent(lltok::kw_prologue) &&
4799 ParseGlobalTypeAndValue(Prologue)) ||
4800 (EatIfPresent(lltok::kw_personality) &&
4801 ParseGlobalTypeAndValue(PersonalityFn)))
4802 return true;
4803
4804 if (FuncAttrs.contains(Attribute::Builtin))
4805 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4806
4807 // If the alignment was parsed as an attribute, move to the alignment field.
4808 if (FuncAttrs.hasAlignmentAttr()) {
4809 Alignment = FuncAttrs.getAlignment();
4810 FuncAttrs.removeAttribute(Attribute::Alignment);
4811 }
4812
4813 // Okay, if we got here, the function is syntactically valid. Convert types
4814 // and do semantic checks.
4815 std::vector<Type*> ParamTypeList;
4816 SmallVector<AttributeSet, 8> Attrs;
4817
4818 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4819 ParamTypeList.push_back(ArgList[i].Ty);
4820 Attrs.push_back(ArgList[i].Attrs);
4821 }
4822
4823 AttributeList PAL =
4824 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
4825 AttributeSet::get(Context, RetAttrs), Attrs);
4826
4827 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4828 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4829
4830 FunctionType *FT =
4831 FunctionType::get(RetType, ParamTypeList, isVarArg);
4832 PointerType *PFT = PointerType::getUnqual(FT);
4833
4834 Fn = nullptr;
4835 if (!FunctionName.empty()) {
4836 // If this was a definition of a forward reference, remove the definition
4837 // from the forward reference table and fill in the forward ref.
4838 auto FRVI = ForwardRefVals.find(FunctionName);
4839 if (FRVI != ForwardRefVals.end()) {
4840 Fn = M->getFunction(FunctionName);
4841 if (!Fn)
4842 return Error(FRVI->second.second, "invalid forward reference to "
4843 "function as global value!");
4844 if (Fn->getType() != PFT)
4845 return Error(FRVI->second.second, "invalid forward reference to "
4846 "function '" + FunctionName + "' with wrong type!");
4847
4848 ForwardRefVals.erase(FRVI);
4849 } else if ((Fn = M->getFunction(FunctionName))) {
4850 // Reject redefinitions.
4851 return Error(NameLoc, "invalid redefinition of function '" +
4852 FunctionName + "'");
4853 } else if (M->getNamedValue(FunctionName)) {
4854 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4855 }
4856
4857 } else {
4858 // If this is a definition of a forward referenced function, make sure the
4859 // types agree.
4860 auto I = ForwardRefValIDs.find(NumberedVals.size());
4861 if (I != ForwardRefValIDs.end()) {
4862 Fn = cast<Function>(I->second.first);
4863 if (Fn->getType() != PFT)
4864 return Error(NameLoc, "type of definition and forward reference of '@" +
4865 Twine(NumberedVals.size()) + "' disagree");
4866 ForwardRefValIDs.erase(I);
4867 }
4868 }
4869
4870 if (!Fn)
4871 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4872 else // Move the forward-reference to the correct spot in the module.
4873 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4874
4875 if (FunctionName.empty())
4876 NumberedVals.push_back(Fn);
4877
4878 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4879 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4880 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4881 Fn->setCallingConv(CC);
4882 Fn->setAttributes(PAL);
4883 Fn->setUnnamedAddr(UnnamedAddr);
4884 Fn->setAlignment(Alignment);
4885 Fn->setSection(Section);
4886 Fn->setComdat(C);
4887 Fn->setPersonalityFn(PersonalityFn);
4888 if (!GC.empty()) Fn->setGC(GC);
4889 Fn->setPrefixData(Prefix);
4890 Fn->setPrologueData(Prologue);
4891 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4892
4893 // Add all of the arguments we parsed to the function.
4894 Function::arg_iterator ArgIt = Fn->arg_begin();
4895 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4896 // If the argument has a name, insert it into the argument symbol table.
4897 if (ArgList[i].Name.empty()) continue;
4898
4899 // Set the name, if it conflicted, it will be auto-renamed.
4900 ArgIt->setName(ArgList[i].Name);
4901
4902 if (ArgIt->getName() != ArgList[i].Name)
4903 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4904 ArgList[i].Name + "'");
4905 }
4906
4907 if (isDefine)
4908 return false;
4909
4910 // Check the declaration has no block address forward references.
4911 ValID ID;
4912 if (FunctionName.empty()) {
4913 ID.Kind = ValID::t_GlobalID;
4914 ID.UIntVal = NumberedVals.size() - 1;
4915 } else {
4916 ID.Kind = ValID::t_GlobalName;
4917 ID.StrVal = FunctionName;
4918 }
4919 auto Blocks = ForwardRefBlockAddresses.find(ID);
4920 if (Blocks != ForwardRefBlockAddresses.end())
4921 return Error(Blocks->first.Loc,
4922 "cannot take blockaddress inside a declaration");
4923 return false;
4924}
4925
4926bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4927 ValID ID;
4928 if (FunctionNumber == -1) {
4929 ID.Kind = ValID::t_GlobalName;
4930 ID.StrVal = F.getName();
4931 } else {
4932 ID.Kind = ValID::t_GlobalID;
4933 ID.UIntVal = FunctionNumber;
4934 }
4935
4936 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4937 if (Blocks == P.ForwardRefBlockAddresses.end())
4938 return false;
4939
4940 for (const auto &I : Blocks->second) {
4941 const ValID &BBID = I.first;
4942 GlobalValue *GV = I.second;
4943
4944 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~svn316259/lib/AsmParser/LLParser.cpp"
, 4945, __PRETTY_FUNCTION__))
4945 "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~svn316259/lib/AsmParser/LLParser.cpp"
, 4945, __PRETTY_FUNCTION__))
;
4946 BasicBlock *BB;
4947 if (BBID.Kind == ValID::t_LocalName)
4948 BB = GetBB(BBID.StrVal, BBID.Loc);
4949 else
4950 BB = GetBB(BBID.UIntVal, BBID.Loc);
4951 if (!BB)
4952 return P.Error(BBID.Loc, "referenced value is not a basic block");
4953
4954 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4955 GV->eraseFromParent();
4956 }
4957
4958 P.ForwardRefBlockAddresses.erase(Blocks);
4959 return false;
4960}
4961
4962/// ParseFunctionBody
4963/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4964bool LLParser::ParseFunctionBody(Function &Fn) {
4965 if (Lex.getKind() != lltok::lbrace)
4966 return TokError("expected '{' in function body");
4967 Lex.Lex(); // eat the {.
4968
4969 int FunctionNumber = -1;
4970 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4971
4972 PerFunctionState PFS(*this, Fn, FunctionNumber);
4973
4974 // Resolve block addresses and allow basic blocks to be forward-declared
4975 // within this function.
4976 if (PFS.resolveForwardRefBlockAddresses())
4977 return true;
4978 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4979
4980 // We need at least one basic block.
4981 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4982 return TokError("function body requires at least one basic block");
4983
4984 while (Lex.getKind() != lltok::rbrace &&
4985 Lex.getKind() != lltok::kw_uselistorder)
4986 if (ParseBasicBlock(PFS)) return true;
4987
4988 while (Lex.getKind() != lltok::rbrace)
4989 if (ParseUseListOrder(&PFS))
4990 return true;
4991
4992 // Eat the }.
4993 Lex.Lex();
4994
4995 // Verify function is ok.
4996 return PFS.FinishFunction();
4997}
4998
4999/// ParseBasicBlock
5000/// ::= LabelStr? Instruction*
5001bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5002 // If this basic block starts out with a name, remember it.
5003 std::string Name;
5004 LocTy NameLoc = Lex.getLoc();
5005 if (Lex.getKind() == lltok::LabelStr) {
5006 Name = Lex.getStrVal();
5007 Lex.Lex();
5008 }
5009
5010 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5011 if (!BB)
5012 return Error(NameLoc,
5013 "unable to create block named '" + Name + "'");
5014
5015 std::string NameStr;
5016
5017 // Parse the instructions in this block until we get a terminator.
5018 Instruction *Inst;
5019 do {
5020 // This instruction may have three possibilities for a name: a) none
5021 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5022 LocTy NameLoc = Lex.getLoc();
5023 int NameID = -1;
5024 NameStr = "";
5025
5026 if (Lex.getKind() == lltok::LocalVarID) {
5027 NameID = Lex.getUIntVal();
5028 Lex.Lex();
5029 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5030 return true;
5031 } else if (Lex.getKind() == lltok::LocalVar) {
5032 NameStr = Lex.getStrVal();
5033 Lex.Lex();
5034 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5035 return true;
5036 }
5037
5038 switch (ParseInstruction(Inst, BB, PFS)) {
5039 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-6.0~svn316259/lib/AsmParser/LLParser.cpp"
, 5039)
;
5040 case InstError: return true;
5041 case InstNormal:
5042 BB->getInstList().push_back(Inst);
5043
5044 // With a normal result, we check to see if the instruction is followed by
5045 // a comma and metadata.
5046 if (EatIfPresent(lltok::comma))
5047 if (ParseInstructionMetadata(*Inst))
5048 return true;
5049 break;
5050 case InstExtraComma:
5051 BB->getInstList().push_back(Inst);
5052
5053 // If the instruction parser ate an extra comma at the end of it, it
5054 // *must* be followed by metadata.
5055 if (ParseInstructionMetadata(*Inst))
5056 return true;
5057 break;
5058 }
5059
5060 // Set the name on the instruction.
5061 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5062 } while (!isa<TerminatorInst>(Inst));
5063
5064 return false;
5065}
5066
5067//===----------------------------------------------------------------------===//
5068// Instruction Parsing.
5069//===----------------------------------------------------------------------===//
5070
5071/// ParseInstruction - Parse one of the many different instructions.
5072///
5073int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5074 PerFunctionState &PFS) {
5075 lltok::Kind Token = Lex.getKind();
5076 if (Token == lltok::Eof)
5077 return TokError("found end of file when expecting more instructions");
5078 LocTy Loc = Lex.getLoc();
5079 unsigned KeywordVal = Lex.getUIntVal();
5080 Lex.Lex(); // Eat the keyword.
5081
5082 switch (Token) {
5083 default: return Error(Loc, "expected instruction opcode");
5084 // Terminator Instructions.
5085 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5086 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5087 case lltok::kw_br: return ParseBr(Inst, PFS);
5088 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5089 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5090 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5091 case lltok::kw_resume: return ParseResume(Inst, PFS);
5092 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5093 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5094 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5095 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5096 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5097 // Binary Operators.
5098 case lltok::kw_add:
5099 case lltok::kw_sub:
5100 case lltok::kw_mul:
5101 case lltok::kw_shl: {
5102 bool NUW = EatIfPresent(lltok::kw_nuw);
5103 bool NSW = EatIfPresent(lltok::kw_nsw);
5104 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5105
5106 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5107
5108 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5109 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5110 return false;
5111 }
5112 case lltok::kw_fadd:
5113 case lltok::kw_fsub:
5114 case lltok::kw_fmul:
5115 case lltok::kw_fdiv:
5116 case lltok::kw_frem: {
5117 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5118 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5119 if (Res != 0)
5120 return Res;
5121 if (FMF.any())
5122 Inst->setFastMathFlags(FMF);
5123 return 0;
5124 }
5125
5126 case lltok::kw_sdiv:
5127 case lltok::kw_udiv:
5128 case lltok::kw_lshr:
5129 case lltok::kw_ashr: {
5130 bool Exact = EatIfPresent(lltok::kw_exact);
5131
5132 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5133 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5134 return false;
5135 }
5136
5137 case lltok::kw_urem:
5138 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5139 case lltok::kw_and:
5140 case lltok::kw_or:
5141 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5142 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5143 case lltok::kw_fcmp: {
5144 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5145 int Res = ParseCompare(Inst, PFS, KeywordVal);
5146 if (Res != 0)
5147 return Res;
5148 if (FMF.any())
5149 Inst->setFastMathFlags(FMF);
5150 return 0;
5151 }
5152
5153 // Casts.
5154 case lltok::kw_trunc:
5155 case lltok::kw_zext:
5156 case lltok::kw_sext:
5157 case lltok::kw_fptrunc:
5158 case lltok::kw_fpext:
5159 case lltok::kw_bitcast:
5160 case lltok::kw_addrspacecast:
5161 case lltok::kw_uitofp:
5162 case lltok::kw_sitofp:
5163 case lltok::kw_fptoui:
5164 case lltok::kw_fptosi:
5165 case lltok::kw_inttoptr:
5166 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5167 // Other.
5168 case lltok::kw_select: return ParseSelect(Inst, PFS);
5169 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5170 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5171 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5172 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5173 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5174 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5175 // Call.
5176 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5177 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5178 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5179 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5180 // Memory.
5181 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5182 case lltok::kw_load: return ParseLoad(Inst, PFS);
5183 case lltok::kw_store: return ParseStore(Inst, PFS);
5184 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5185 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5186 case lltok::kw_fence: return ParseFence(Inst, PFS);
5187 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5188 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5189 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5190 }
5191}
5192
5193/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5194bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5195 if (Opc == Instruction::FCmp) {
5196 switch (Lex.getKind()) {
5197 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5198 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5199 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5200 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5201 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5202 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5203 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5204 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5205 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5206 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5207 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5208 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5209 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5210 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5211 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5212 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5213 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5214 }
5215 } else {
5216 switch (Lex.getKind()) {
5217 default: return TokError("expected icmp predicate (e.g. 'eq')");
5218 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5219 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5220 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5221 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5222 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5223 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5224 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5225 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5226 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5227 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5228 }
5229 }
5230 Lex.Lex();
5231 return false;
5232}
5233
5234//===----------------------------------------------------------------------===//
5235// Terminator Instructions.
5236//===----------------------------------------------------------------------===//
5237
5238/// ParseRet - Parse a return instruction.
5239/// ::= 'ret' void (',' !dbg, !1)*
5240/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5241bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5242 PerFunctionState &PFS) {
5243 SMLoc TypeLoc = Lex.getLoc();
5244 Type *Ty = nullptr;
5245 if (ParseType(Ty, true /*void allowed*/)) return true;
5246
5247 Type *ResType = PFS.getFunction().getReturnType();
5248
5249 if (Ty->isVoidTy()) {
5250 if (!ResType->isVoidTy())
5251 return Error(TypeLoc, "value doesn't match function result type '" +
5252 getTypeString(ResType) + "'");
5253
5254 Inst = ReturnInst::Create(Context);
5255 return false;
5256 }
5257
5258 Value *RV;
5259 if (ParseValue(Ty, RV, PFS)) return true;
5260
5261 if (ResType != RV->getType())
5262 return Error(TypeLoc, "value doesn't match function result type '" +
5263 getTypeString(ResType) + "'");
5264
5265 Inst = ReturnInst::Create(Context, RV);
5266 return false;
5267}
5268
5269/// ParseBr
5270/// ::= 'br' TypeAndValue
5271/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5272bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5273 LocTy Loc, Loc2;
5274 Value *Op0;
5275 BasicBlock *Op1, *Op2;
5276 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5277
5278 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5279 Inst = BranchInst::Create(BB);
5280 return false;
5281 }
5282
5283 if (Op0->getType() != Type::getInt1Ty(Context))
5284 return Error(Loc, "branch condition must have 'i1' type");
5285
5286 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5287 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5288 ParseToken(lltok::comma, "expected ',' after true destination") ||
5289 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5290 return true;
5291
5292 Inst = BranchInst::Create(Op1, Op2, Op0);
5293 return false;
5294}
5295
5296/// ParseSwitch
5297/// Instruction
5298/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5299/// JumpTable
5300/// ::= (TypeAndValue ',' TypeAndValue)*
5301bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5302 LocTy CondLoc, BBLoc;
5303 Value *Cond;
5304 BasicBlock *DefaultBB;
5305 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5306 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5307 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5308 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5309 return true;
5310
5311 if (!Cond->getType()->isIntegerTy())
5312 return Error(CondLoc, "switch condition must have integer type");
5313
5314 // Parse the jump table pairs.
5315 SmallPtrSet<Value*, 32> SeenCases;
5316 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5317 while (Lex.getKind() != lltok::rsquare) {
5318 Value *Constant;
5319 BasicBlock *DestBB;
5320
5321 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5322 ParseToken(lltok::comma, "expected ',' after case value") ||
5323 ParseTypeAndBasicBlock(DestBB, PFS))
5324 return true;
5325
5326 if (!SeenCases.insert(Constant).second)
5327 return Error(CondLoc, "duplicate case value in switch");
5328 if (!isa<ConstantInt>(Constant))
5329 return Error(CondLoc, "case value is not a constant integer");
5330
5331 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5332 }
5333
5334 Lex.Lex(); // Eat the ']'.
5335
5336 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5337 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5338 SI->addCase(Table[i].first, Table[i].second);
5339 Inst = SI;
5340 return false;
5341}
5342
5343/// ParseIndirectBr
5344/// Instruction
5345/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5346bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5347 LocTy AddrLoc;
5348 Value *Address;
5349 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5350 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5351 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5352 return true;
5353
5354 if (!Address->getType()->isPointerTy())
5355 return Error(AddrLoc, "indirectbr address must have pointer type");
5356
5357 // Parse the destination list.
5358 SmallVector<BasicBlock*, 16> DestList;
5359
5360 if (Lex.getKind() != lltok::rsquare) {
5361 BasicBlock *DestBB;
5362 if (ParseTypeAndBasicBlock(DestBB, PFS))
5363 return true;
5364 DestList.push_back(DestBB);
5365
5366 while (EatIfPresent(lltok::comma)) {
5367 if (ParseTypeAndBasicBlock(DestBB, PFS))
5368 return true;
5369 DestList.push_back(DestBB);
5370 }
5371 }
5372
5373 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5374 return true;
5375
5376 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5377 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5378 IBI->addDestination(DestList[i]);
5379 Inst = IBI;
5380 return false;
5381}
5382
5383/// ParseInvoke
5384/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5385/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5386bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5387 LocTy CallLoc = Lex.getLoc();
5388 AttrBuilder RetAttrs, FnAttrs;
5389 std::vector<unsigned> FwdRefAttrGrps;
5390 LocTy NoBuiltinLoc;
5391 unsigned CC;
5392 Type *RetType = nullptr;
5393 LocTy RetTypeLoc;
5394 ValID CalleeID;
5395 SmallVector<ParamInfo, 16> ArgList;
5396 SmallVector<OperandBundleDef, 2> BundleList;
5397
5398 BasicBlock *NormalBB, *UnwindBB;
5399 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5400 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5401 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5402 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5403 NoBuiltinLoc) ||
5404 ParseOptionalOperandBundles(BundleList, PFS) ||
5405 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5406 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5407 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5408 ParseTypeAndBasicBlock(UnwindBB, PFS))
5409 return true;
5410
5411 // If RetType is a non-function pointer type, then this is the short syntax
5412 // for the call, which means that RetType is just the return type. Infer the
5413 // rest of the function argument types from the arguments that are present.
5414 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5415 if (!Ty) {
5416 // Pull out the types of all of the arguments...
5417 std::vector<Type*> ParamTypes;
5418 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5419 ParamTypes.push_back(ArgList[i].V->getType());
5420
5421 if (!FunctionType::isValidReturnType(RetType))
5422 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5423
5424 Ty = FunctionType::get(RetType, ParamTypes, false);
5425 }
5426
5427 CalleeID.FTy = Ty;
5428
5429 // Look up the callee.
5430 Value *Callee;
5431 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5432 return true;
5433
5434 // Set up the Attribute for the function.
5435 SmallVector<Value *, 8> Args;
5436 SmallVector<AttributeSet, 8> ArgAttrs;
5437
5438 // Loop through FunctionType's arguments and ensure they are specified
5439 // correctly. Also, gather any parameter attributes.
5440 FunctionType::param_iterator I = Ty->param_begin();
5441 FunctionType::param_iterator E = Ty->param_end();
5442 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5443 Type *ExpectedTy = nullptr;
5444 if (I != E) {
5445 ExpectedTy = *I++;
5446 } else if (!Ty->isVarArg()) {
5447 return Error(ArgList[i].Loc, "too many arguments specified");
5448 }
5449
5450 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5451 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5452 getTypeString(ExpectedTy) + "'");
5453 Args.push_back(ArgList[i].V);
5454 ArgAttrs.push_back(ArgList[i].Attrs);
5455 }
5456
5457 if (I != E)
5458 return Error(CallLoc, "not enough parameters specified for call");
5459
5460 if (FnAttrs.hasAlignmentAttr())
5461 return Error(CallLoc, "invoke instructions may not have an alignment");
5462
5463 // Finish off the Attribute and check them
5464 AttributeList PAL =
5465 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5466 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5467
5468 InvokeInst *II =
5469 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5470 II->setCallingConv(CC);
5471 II->setAttributes(PAL);
5472 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5473 Inst = II;
5474 return false;
5475}
5476
5477/// ParseResume
5478/// ::= 'resume' TypeAndValue
5479bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5480 Value *Exn; LocTy ExnLoc;
5481 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5482 return true;
5483
5484 ResumeInst *RI = ResumeInst::Create(Exn);
5485 Inst = RI;
5486 return false;
5487}
5488
5489bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5490 PerFunctionState &PFS) {
5491 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5492 return true;
5493
5494 while (Lex.getKind() != lltok::rsquare) {
5495 // If this isn't the first argument, we need a comma.
5496 if (!Args.empty() &&
5497 ParseToken(lltok::comma, "expected ',' in argument list"))
5498 return true;
5499
5500 // Parse the argument.
5501 LocTy ArgLoc;
5502 Type *ArgTy = nullptr;
5503 if (ParseType(ArgTy, ArgLoc))
5504 return true;
5505
5506 Value *V;
5507 if (ArgTy->isMetadataTy()) {
5508 if (ParseMetadataAsValue(V, PFS))
5509 return true;
5510 } else {
5511 if (ParseValue(ArgTy, V, PFS))
5512 return true;
5513 }
5514 Args.push_back(V);
5515 }
5516
5517 Lex.Lex(); // Lex the ']'.
5518 return false;
5519}
5520
5521/// ParseCleanupRet
5522/// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5523bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5524 Value *CleanupPad = nullptr;
5525
5526 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5527 return true;
5528
5529 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5530 return true;
5531
5532 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5533 return true;
5534
5535 BasicBlock *UnwindBB = nullptr;
5536 if (Lex.getKind() == lltok::kw_to) {
5537 Lex.Lex();
5538 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5539 return true;
5540 } else {
5541 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5542 return true;
5543 }
5544 }
5545
5546 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5547 return false;
5548}
5549
5550/// ParseCatchRet
5551/// ::= 'catchret' from Parent Value 'to' TypeAndValue
5552bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5553 Value *CatchPad = nullptr;
5554
5555 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5556 return true;
5557
5558 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5559 return true;
5560
5561 BasicBlock *BB;
5562 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5563 ParseTypeAndBasicBlock(BB, PFS))
5564 return true;
5565
5566 Inst = CatchReturnInst::Create(CatchPad, BB);
5567 return false;
5568}
5569
5570/// ParseCatchSwitch
5571/// ::= 'catchswitch' within Parent
5572bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5573 Value *ParentPad;
5574
5575 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5576 return true;
5577
5578 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5579 Lex.getKind() != lltok::LocalVarID)
5580 return TokError("expected scope value for catchswitch");
5581
5582 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5583 return true;
5584
5585 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5586 return true;
5587
5588 SmallVector<BasicBlock *, 32> Table;
5589 do {
5590 BasicBlock *DestBB;
5591 if (ParseTypeAndBasicBlock(DestBB, PFS))
5592 return true;
5593 Table.push_back(DestBB);
5594 } while (EatIfPresent(lltok::comma));
5595
5596 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5597 return true;
5598
5599 if (ParseToken(lltok::kw_unwind,
5600 "expected 'unwind' after catchswitch scope"))
5601 return true;
5602
5603 BasicBlock *UnwindBB = nullptr;
5604 if (EatIfPresent(lltok::kw_to)) {
5605 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5606 return true;
5607 } else {
5608 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5609 return true;
5610 }
5611
5612 auto *CatchSwitch =
5613 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5614 for (BasicBlock *DestBB : Table)
5615 CatchSwitch->addHandler(DestBB);
5616 Inst = CatchSwitch;
5617 return false;
5618}
5619
5620/// ParseCatchPad
5621/// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5622bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5623 Value *CatchSwitch = nullptr;
5624
5625 if (ParseToken(lltok::kw_within, "expected 'within' after catchpad"))
5626 return true;
5627
5628 if (Lex.getKind() != lltok::LocalVar && Lex.getKind() != lltok::LocalVarID)
5629 return TokError("expected scope value for catchpad");
5630
5631 if (ParseValue(Type::getTokenTy(Context), CatchSwitch, PFS))
5632 return true;
5633
5634 SmallVector<Value *, 8> Args;
5635 if (ParseExceptionArgs(Args, PFS))
5636 return true;
5637
5638 Inst = CatchPadInst::Create(CatchSwitch, Args);
5639 return false;
5640}
5641
5642/// ParseCleanupPad
5643/// ::= 'cleanuppad' within Parent ParamList
5644bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5645 Value *ParentPad = nullptr;
5646
5647 if (ParseToken(lltok::kw_within, "expected 'within' after cleanuppad"))
5648 return true;
5649
5650 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5651 Lex.getKind() != lltok::LocalVarID)
5652 return TokError("expected scope value for cleanuppad");
5653
5654 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5655 return true;
5656
5657 SmallVector<Value *, 8> Args;
5658 if (ParseExceptionArgs(Args, PFS))
5659 return true;
5660
5661 Inst = CleanupPadInst::Create(ParentPad, Args);
5662 return false;
5663}
5664
5665//===----------------------------------------------------------------------===//
5666// Binary Operators.
5667//===----------------------------------------------------------------------===//
5668
5669/// ParseArithmetic
5670/// ::= ArithmeticOps TypeAndValue ',' Value
5671///
5672/// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5673/// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5674bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5675 unsigned Opc, unsigned OperandType) {
5676 LocTy Loc; Value *LHS, *RHS;
5677 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5678 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5679 ParseValue(LHS->getType(), RHS, PFS))
5680 return true;
5681
5682 bool Valid;
5683 switch (OperandType) {
5684 default: llvm_unreachable("Unknown operand type!")::llvm::llvm_unreachable_internal("Unknown operand type!", "/build/llvm-toolchain-snapshot-6.0~svn316259/lib/AsmParser/LLParser.cpp"
, 5684)
;
5685 case 0: // int or FP.
5686 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5687 LHS->getType()->isFPOrFPVectorTy();
5688 break;
5689 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5690 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5691 }
5692
5693 if (!Valid)
5694 return Error(Loc, "invalid operand type for instruction");
5695
5696 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5697 return false;
5698}
5699
5700/// ParseLogical
5701/// ::= ArithmeticOps TypeAndValue ',' Value {
5702bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5703 unsigned Opc) {
5704 LocTy Loc; Value *LHS, *RHS;
5705 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5706 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5707 ParseValue(LHS->getType(), RHS, PFS))
5708 return true;
5709
5710 if (!LHS->getType()->isIntOrIntVectorTy())
5711 return Error(Loc,"instruction requires integer or integer vector operands");
5712
5713 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5714 return false;
5715}
5716
5717/// ParseCompare
5718/// ::= 'icmp' IPredicates TypeAndValue ',' Value
5719/// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5720bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5721 unsigned Opc) {
5722 // Parse the integer/fp comparison predicate.
5723 LocTy Loc;
5724 unsigned Pred;
5725 Value *LHS, *RHS;
5726 if (ParseCmpPredicate(Pred, Opc) ||
5727 ParseTypeAndValue(LHS, Loc, PFS) ||
5728 ParseToken(lltok::comma, "expected ',' after compare value") ||
5729 ParseValue(LHS->getType(), RHS, PFS))
5730 return true;
5731
5732 if (Opc == Instruction::FCmp) {
5733 if (!LHS->getType()->isFPOrFPVectorTy())
5734 return Error(Loc, "fcmp requires floating point operands");
5735 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5736 } else {
5737 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~svn316259/lib/AsmParser/LLParser.cpp"
, 5737, __PRETTY_FUNCTION__))
;
5738 if (!LHS->getType()->isIntOrIntVectorTy() &&
5739 !LHS->getType()->isPtrOrPtrVectorTy())
5740 return Error(Loc, "icmp requires integer operands");
5741 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5742 }
5743 return false;
5744}
5745
5746//===----------------------------------------------------------------------===//
5747// Other Instructions.
5748//===----------------------------------------------------------------------===//
5749
5750
5751/// ParseCast
5752/// ::= CastOpc TypeAndValue 'to' Type
5753bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5754 unsigned Opc) {
5755 LocTy Loc;
5756 Value *Op;
5757 Type *DestTy = nullptr;
5758 if (ParseTypeAndValue(Op, Loc, PFS) ||
5759 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5760 ParseType(DestTy))
5761 return true;
5762
5763 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5764 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5765 return Error(Loc, "invalid cast opcode for cast from '" +
5766 getTypeString(Op->getType()) + "' to '" +
5767 getTypeString(DestTy) + "'");
5768 }
5769 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5770 return false;
5771}
5772
5773/// ParseSelect
5774/// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5775bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5776 LocTy Loc;
5777 Value *Op0, *Op1, *Op2;
5778 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5779 ParseToken(lltok::comma, "expected ',' after select condition") ||
5780 ParseTypeAndValue(Op1, PFS) ||
5781 ParseToken(lltok::comma, "expected ',' after select value") ||
5782 ParseTypeAndValue(Op2, PFS))
5783 return true;
5784
5785 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5786 return Error(Loc, Reason);
5787
5788 Inst = SelectInst::Create(Op0, Op1, Op2);
5789 return false;
5790}
5791
5792/// ParseVA_Arg
5793/// ::= 'va_arg' TypeAndValue ',' Type
5794bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5795 Value *Op;
5796 Type *EltTy = nullptr;
5797 LocTy TypeLoc;
5798 if (ParseTypeAndValue(Op, PFS) ||
5799 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5800 ParseType(EltTy, TypeLoc))
5801 return true;
5802
5803 if (!EltTy->isFirstClassType())
5804 return Error(TypeLoc, "va_arg requires operand with first class type");
5805
5806 Inst = new VAArgInst(Op, EltTy);
5807 return false;
5808}
5809
5810/// ParseExtractElement
5811/// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5812bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5813 LocTy Loc;
5814 Value *Op0, *Op1;
5815 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5816 ParseToken(lltok::comma, "expected ',' after extract value") ||
5817 ParseTypeAndValue(Op1, PFS))
5818 return true;
5819
5820 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5821 return Error(Loc, "invalid extractelement operands");
5822
5823 Inst = ExtractElementInst::Create(Op0, Op1);
5824 return false;
5825}
5826
5827/// ParseInsertElement
5828/// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5829bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5830 LocTy Loc;
5831 Value *Op0, *Op1, *Op2;
5832 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5833 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5834 ParseTypeAndValue(Op1, PFS) ||
5835 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5836 ParseTypeAndValue(Op2, PFS))
5837 return true;
5838
5839 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5840 return Error(Loc, "invalid insertelement operands");
5841
5842 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5843 return false;
5844}
5845
5846/// ParseShuffleVector
5847/// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5848bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5849 LocTy Loc;
5850 Value *Op0, *Op1, *Op2;
5851 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5852 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5853 ParseTypeAndValue(Op1, PFS) ||
5854 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5855 ParseTypeAndValue(Op2, PFS))
5856 return true;
5857
5858 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5859 return Error(Loc, "invalid shufflevector operands");
5860
5861 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5862 return false;
5863}
5864
5865/// ParsePHI
5866/// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5867int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5868 Type *Ty = nullptr; LocTy TypeLoc;
5869 Value *Op0, *Op1;
5870
5871 if (ParseType(Ty, TypeLoc) ||
5872 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5873 ParseValue(Ty, Op0, PFS) ||
5874 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5875 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5876 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5877 return true;
5878
5879 bool AteExtraComma = false;
5880 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5881
5882 while (true) {
5883 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5884
5885 if (!EatIfPresent(lltok::comma))
5886 break;
5887
5888 if (Lex.getKind() == lltok::MetadataVar) {
5889 AteExtraComma = true;
5890 break;
5891 }
5892
5893 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5894 ParseValue(Ty, Op0, PFS) ||
5895 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5896 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5897 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5898 return true;
5899 }
5900
5901 if (!Ty->isFirstClassType())
5902 return Error(TypeLoc, "phi node must have first class type");
5903
5904 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5905 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5906 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5907 Inst = PN;
5908 return AteExtraComma ? InstExtraComma : InstNormal;
5909}
5910
5911/// ParseLandingPad
5912/// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5913/// Clause
5914/// ::= 'catch' TypeAndValue
5915/// ::= 'filter'
5916/// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5917bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5918 Type *Ty = nullptr; LocTy TyLoc;
5919
5920 if (ParseType(Ty, TyLoc))
5921 return true;
5922
5923 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5924 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5925
5926 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5927 LandingPadInst::ClauseType CT;
5928 if (EatIfPresent(lltok::kw_catch))
5929 CT = LandingPadInst::Catch;
5930 else if (EatIfPresent(lltok::kw_filter))
5931 CT = LandingPadInst::Filter;
5932 else
5933 return TokError("expected 'catch' or 'filter' clause type");
5934
5935 Value *V;
5936 LocTy VLoc;
5937 if (ParseTypeAndValue(V, VLoc, PFS))
5938 return true;
5939
5940 // A 'catch' type expects a non-array constant. A filter clause expects an
5941 // array constant.
5942 if (CT == LandingPadInst::Catch) {
5943 if (isa<ArrayType>(V->getType()))
5944 Error(VLoc, "'catch' clause has an invalid type");
5945 } else {
5946 if (!isa<ArrayType>(V->getType()))
5947 Error(VLoc, "'filter' clause has an invalid type");
5948 }
5949
5950 Constant *CV = dyn_cast<Constant>(V);
5951 if (!CV)
5952 return Error(VLoc, "clause argument must be a constant");
5953 LP->addClause(CV);
5954 }
5955
5956 Inst = LP.release();
5957 return false;
5958}
5959
5960/// ParseCall
5961/// ::= 'call' OptionalFastMathFlags OptionalCallingConv
5962/// OptionalAttrs Type Value ParameterList OptionalAttrs
5963/// ::= 'tail' 'call' OptionalFastMathFlags OptionalCallingConv
5964/// OptionalAttrs Type Value ParameterList OptionalAttrs
5965/// ::= 'musttail' 'call' OptionalFastMathFlags OptionalCallingConv
5966/// OptionalAttrs Type Value ParameterList OptionalAttrs
5967/// ::= 'notail' 'call' OptionalFastMathFlags OptionalCallingConv
5968/// OptionalAttrs Type Value ParameterList OptionalAttrs
5969bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5970 CallInst::TailCallKind TCK) {
5971 AttrBuilder RetAttrs, FnAttrs;
5972 std::vector<unsigned> FwdRefAttrGrps;
5973 LocTy BuiltinLoc;
5974 unsigned CC;
5975 Type *RetType = nullptr;
5976 LocTy RetTypeLoc;
5977 ValID CalleeID;
5978 SmallVector<ParamInfo, 16> ArgList;
5979 SmallVector<OperandBundleDef, 2> BundleList;
5980 LocTy CallLoc = Lex.getLoc();
5981
5982 if (TCK != CallInst::TCK_None &&
5983 ParseToken(lltok::kw_call,
5984 "expected 'tail call', 'musttail call', or 'notail call'"))
5985 return true;
5986
5987 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5988
5989 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5990 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5991 ParseValID(CalleeID) ||
5992 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5993 PFS.getFunction().isVarArg()) ||
5994 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5995 ParseOptionalOperandBundles(BundleList, PFS))
5996 return true;
5997
5998 if (FMF.any() && !RetType->isFPOrFPVectorTy())
5999 return Error(CallLoc, "fast-math-flags specified for call without "
6000 "floating-point scalar or vector return type");
6001
6002 // If RetType is a non-function pointer type, then this is the short syntax
6003 // for the call, which means that RetType is just the return type. Infer the
6004 // rest of the function argument types from the arguments that are present.
6005 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
6006 if (!Ty) {
6007 // Pull out the types of all of the arguments...
6008 std::vector<Type*> ParamTypes;
6009 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
6010 ParamTypes.push_back(ArgList[i].V->getType());
6011
6012 if (!FunctionType::isValidReturnType(RetType))
6013 return Error(RetTypeLoc, "Invalid result type for LLVM function");
6014
6015 Ty = FunctionType::get(RetType, ParamTypes, false);
6016 }
6017
6018 CalleeID.FTy = Ty;
6019
6020 // Look up the callee.
6021 Value *Callee;
6022 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
6023 return true;
6024
6025 // Set up the Attribute for the function.
6026 SmallVector<AttributeSet, 8> Attrs;
6027
6028 SmallVector<Value*, 8> Args;
6029
6030 // Loop through FunctionType's arguments and ensure they are specified
6031 // correctly. Also, gather any parameter attributes.
6032 FunctionType::param_iterator I = Ty->param_begin();
6033 FunctionType::param_iterator E = Ty->param_end();
6034 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
6035 Type *ExpectedTy = nullptr;
6036 if (I != E) {
6037 ExpectedTy = *I++;
6038 } else if (!Ty->isVarArg()) {
6039 return Error(ArgList[i].Loc, "too many arguments specified");
6040 }
6041
6042 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
6043 return Error(ArgList[i].Loc, "argument is not of expected type '" +
6044 getTypeString(ExpectedTy) + "'");
6045 Args.push_back(ArgList[i].V);
6046 Attrs.push_back(ArgList[i].Attrs);
6047 }
6048
6049 if (I != E)
6050 return Error(CallLoc, "not enough parameters specified for call");
6051
6052 if (FnAttrs.hasAlignmentAttr())
6053 return Error(CallLoc, "call instructions may not have an alignment");
6054
6055 // Finish off the Attribute and check them
6056 AttributeList PAL =
6057 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
6058 AttributeSet::get(Context, RetAttrs), Attrs);
6059
6060 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
6061 CI->setTailCallKind(TCK);
6062 CI->setCallingConv(CC);
6063 if (FMF.any())
6064 CI->setFastMathFlags(FMF);
6065 CI->setAttributes(PAL);
6066 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
6067 Inst = CI;
6068 return false;
6069}
6070
6071//===----------------------------------------------------------------------===//
6072// Memory Instructions.
6073//===----------------------------------------------------------------------===//
6074
6075/// ParseAlloc
6076/// ::= 'alloca' 'inalloca'? 'swifterror'? Type (',' TypeAndValue)?
6077/// (',' 'align' i32)? (',', 'addrspace(n))?
6078int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
6079 Value *Size = nullptr;
6080 LocTy SizeLoc, TyLoc, ASLoc;
6081 unsigned Alignment = 0;
6082 unsigned AddrSpace = 0;
6083 Type *Ty = nullptr;
6084
6085 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
6086 bool IsSwiftError = EatIfPresent(lltok::kw_swifterror);
6087
6088 if (ParseType(Ty, TyLoc)) return true;
6089
6090 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
6091 return Error(TyLoc, "invalid type for alloca");
6092
6093 bool AteExtraComma = false;
6094 if (EatIfPresent(lltok::comma)) {
6095 if (Lex.getKind() == lltok::kw_align) {
6096 if (ParseOptionalAlignment(Alignment))
6097 return true;
6098 if (ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma))
6099 return true;
6100 } else if (Lex.getKind() == lltok::kw_addrspace) {
6101 ASLoc = Lex.getLoc();
6102 if (ParseOptionalAddrSpace(AddrSpace))
6103 return true;
6104 } else if (Lex.getKind() == lltok::MetadataVar) {
6105 AteExtraComma = true;
6106 } else {
6107 if (ParseTypeAndValue(Size, SizeLoc, PFS))
6108 return true;
6109 if (EatIfPresent(lltok::comma)) {
6110 if (Lex.getKind() == lltok::kw_align) {
6111 if (ParseOptionalAlignment(Alignment))
6112 return true;
6113 if (ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma))
6114 return true;
6115 } else if (Lex.getKind() == lltok::kw_addrspace) {
6116 ASLoc = Lex.getLoc();
6117 if (ParseOptionalAddrSpace(AddrSpace))
6118 return true;
6119 } else if (Lex.getKind() == lltok::MetadataVar) {
6120 AteExtraComma = true;
6121 }
6122 }
6123 }
6124 }
6125
6126 if (Size && !Size->getType()->isIntegerTy())
6127 return Error(SizeLoc, "element count must have integer type");
6128
6129 const DataLayout &DL = M->getDataLayout();
6130 unsigned AS = DL.getAllocaAddrSpace();
6131 if (AS != AddrSpace) {
6132 // TODO: In the future it should be possible to specify addrspace per-alloca.
6133 return Error(ASLoc, "address space must match datalayout");
6134 }
6135
6136 AllocaInst *AI = new AllocaInst(Ty, AS, Size, Alignment);
6137 AI->setUsedWithInAlloca(IsInAlloca);
6138 AI->setSwiftError(IsSwiftError);
6139 Inst = AI;
6140 return AteExtraComma ? InstExtraComma : InstNormal;
6141}
6142
6143/// ParseLoad
6144/// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
6145/// ::= 'load' 'atomic' 'volatile'? TypeAndValue
6146/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6147int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
6148 Value *Val; LocTy Loc;
6149 unsigned Alignment = 0;
6150 bool AteExtraComma = false;
6151 bool isAtomic = false;
6152 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6153 SyncScope::ID SSID = SyncScope::System;
6154
6155 if (Lex.getKind() == lltok::kw_atomic) {
6156 isAtomic = true;
6157 Lex.Lex();
6158 }
6159
6160 bool isVolatile = false;
6161 if (Lex.getKind() == lltok::kw_volatile) {
6162 isVolatile = true;
6163 Lex.Lex();
6164 }
6165
6166 Type *Ty;
6167 LocTy ExplicitTypeLoc = Lex.getLoc();
6168 if (ParseType(Ty) ||
6169 ParseToken(lltok::comma, "expected comma after load's type") ||
6170 ParseTypeAndValue(Val, Loc, PFS) ||
6171 ParseScopeAndOrdering(isAtomic, SSID, Ordering) ||
6172 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6173 return true;
6174
6175 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
6176 return Error(Loc, "load operand must be a pointer to a first class type");
6177 if (isAtomic && !Alignment)
6178 return Error(Loc, "atomic load must have explicit non-zero alignment");
6179 if (Ordering == AtomicOrdering::Release ||
6180 Ordering == AtomicOrdering::AcquireRelease)
6181 return Error(Loc, "atomic load cannot use Release ordering");
6182
6183 if (Ty != cast<PointerType>(Val->getType())->getElementType())
6184 return Error(ExplicitTypeLoc,
6185 "explicit pointee type doesn't match operand's pointee type");
6186
6187 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, SSID);
6188 return AteExtraComma ? InstExtraComma : InstNormal;
6189}
6190
6191/// ParseStore
6192
6193/// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
6194/// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
6195/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6196int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
6197 Value *Val, *Ptr; LocTy Loc, PtrLoc;
6198 unsigned Alignment = 0;
6199 bool AteExtraComma = false;
6200 bool isAtomic = false;
6201 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6202 SyncScope::ID SSID = SyncScope::System;
6203
6204 if (Lex.getKind() == lltok::kw_atomic) {
6205 isAtomic = true;
6206 Lex.Lex();
6207 }
6208
6209 bool isVolatile = false;
6210 if (Lex.getKind() == lltok::kw_volatile) {
6211 isVolatile = true;
6212 Lex.Lex();
6213 }
6214
6215 if (ParseTypeAndValue(Val, Loc, PFS) ||
6216 ParseToken(lltok::comma, "expected ',' after store operand") ||
6217 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6218 ParseScopeAndOrdering(isAtomic, SSID, Ordering) ||
6219 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6220 return true;
6221
6222 if (!Ptr->getType()->isPointerTy())
6223 return Error(PtrLoc, "store operand must be a pointer");
6224 if (!Val->getType()->isFirstClassType())
6225 return Error(Loc, "store operand must be a first class value");
6226 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6227 return Error(Loc, "stored value and pointer type do not match");
6228 if (isAtomic && !Alignment)
6229 return Error(Loc, "atomic store must have explicit non-zero alignment");
6230 if (Ordering == AtomicOrdering::Acquire ||
6231 Ordering == AtomicOrdering::AcquireRelease)
6232 return Error(Loc, "atomic store cannot use Acquire ordering");
6233
6234 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, SSID);
6235 return AteExtraComma ? InstExtraComma : InstNormal;
6236}
6237
6238/// ParseCmpXchg
6239/// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
6240/// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
6241int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
6242 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
6243 bool AteExtraComma = false;
6244 AtomicOrdering SuccessOrdering = AtomicOrdering::NotAtomic;
6245 AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic;
6246 SyncScope::ID SSID = SyncScope::System;
6247 bool isVolatile = false;
6248 bool isWeak = false;
6249
6250 if (EatIfPresent(lltok::kw_weak))
6251 isWeak = true;
6252
6253 if (EatIfPresent(lltok::kw_volatile))
6254 isVolatile = true;
6255
6256 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6257 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
6258 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
6259 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
6260 ParseTypeAndValue(New, NewLoc, PFS) ||
6261 ParseScopeAndOrdering(true /*Always atomic*/, SSID, SuccessOrdering) ||
6262 ParseOrdering(FailureOrdering))
6263 return true;
6264
6265 if (SuccessOrdering == AtomicOrdering::Unordered ||
6266 FailureOrdering == AtomicOrdering::Unordered)
6267 return TokError("cmpxchg cannot be unordered");
6268 if (isStrongerThan(FailureOrdering, SuccessOrdering))
6269 return TokError("cmpxchg failure argument shall be no stronger than the "
6270 "success argument");
6271 if (FailureOrdering == AtomicOrdering::Release ||
6272 FailureOrdering == AtomicOrdering::AcquireRelease)
6273 return TokError(
6274 "cmpxchg failure ordering cannot include release semantics");
6275 if (!Ptr->getType()->isPointerTy())
6276 return Error(PtrLoc, "cmpxchg operand must be a pointer");
6277 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
6278 return Error(CmpLoc, "compare value and pointer type do not match");
6279 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
6280 return Error(NewLoc, "new value and pointer type do not match");
6281 if (!New->getType()->isFirstClassType())
6282 return Error(NewLoc, "cmpxchg operand must be a first class value");
6283 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
6284 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, SSID);
6285 CXI->setVolatile(isVolatile);
6286 CXI->setWeak(isWeak);
6287 Inst = CXI;
6288 return AteExtraComma ? InstExtraComma : InstNormal;
6289}
6290
6291/// ParseAtomicRMW
6292/// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
6293/// 'singlethread'? AtomicOrdering
6294int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
6295 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
6296 bool AteExtraComma = false;
6297 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6298 SyncScope::ID SSID = SyncScope::System;
6299 bool isVolatile = false;
6300 AtomicRMWInst::BinOp Operation;
6301
6302 if (EatIfPresent(lltok::kw_volatile))
6303 isVolatile = true;
6304
6305 switch (Lex.getKind()) {
6306 default: return TokError("expected binary operation in atomicrmw");
6307 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
6308 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
6309 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
6310 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
6311 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
6312 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
6313 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
6314 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
6315 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
6316 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
6317 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
6318 }
6319 Lex.Lex(); // Eat the operation.
6320
6321 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6322 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
6323 ParseTypeAndValue(Val, ValLoc, PFS) ||
6324 ParseScopeAndOrdering(true /*Always atomic*/, SSID, Ordering))
6325 return true;
6326
6327 if (Ordering == AtomicOrdering::Unordered)
6328 return TokError("atomicrmw cannot be unordered");
6329 if (!Ptr->getType()->isPointerTy())
6330 return Error(PtrLoc, "atomicrmw operand must be a pointer");
6331 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6332 return Error(ValLoc, "atomicrmw value and pointer type do not match");
6333 if (!Val->getType()->isIntegerTy())
6334 return Error(ValLoc, "atomicrmw operand must be an integer");
6335 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
6336 if (Size < 8 || (Size & (Size - 1)))
6337 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
6338 " integer");
6339
6340 AtomicRMWInst *RMWI =
6341 new AtomicRMWInst(Operation, Ptr, Val, Ordering, SSID);
6342 RMWI->setVolatile(isVolatile);
6343 Inst = RMWI;
6344 return AteExtraComma ? InstExtraComma : InstNormal;
6345}
6346
6347/// ParseFence
6348/// ::= 'fence' 'singlethread'? AtomicOrdering
6349int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6350 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6351 SyncScope::ID SSID = SyncScope::System;
6352 if (ParseScopeAndOrdering(true /*Always atomic*/, SSID, Ordering))
6353 return true;
6354
6355 if (Ordering == AtomicOrdering::Unordered)
6356 return TokError("fence cannot be unordered");
6357 if (Ordering == AtomicOrdering::Monotonic)
6358 return TokError("fence cannot be monotonic");
6359
6360 Inst = new FenceInst(Context, Ordering, SSID);
6361 return InstNormal;
6362}
6363
6364/// ParseGetElementPtr
6365/// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6366int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6367 Value *Ptr = nullptr;
6368 Value *Val = nullptr;
6369 LocTy Loc, EltLoc;
6370
6371 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6372
6373 Type *Ty = nullptr;
6374 LocTy ExplicitTypeLoc = Lex.getLoc();
6375 if (ParseType(Ty) ||
6376 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6377 ParseTypeAndValue(Ptr, Loc, PFS))
6378 return true;
6379
6380 Type *BaseType = Ptr->getType();
6381 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6382 if (!BasePointerType)
6383 return Error(Loc, "base of getelementptr must be a pointer");
6384
6385 if (Ty != BasePointerType->getElementType())
6386 return Error(ExplicitTypeLoc,
6387 "explicit pointee type doesn't match operand's pointee type");
6388
6389 SmallVector<Value*, 16> Indices;
6390 bool AteExtraComma = false;
6391 // GEP returns a vector of pointers if at least one of parameters is a vector.
6392 // All vector parameters should have the same vector width.
6393 unsigned GEPWidth = BaseType->isVectorTy() ?
6394 BaseType->getVectorNumElements() : 0;
6395
6396 while (EatIfPresent(lltok::comma)) {
6397 if (Lex.getKind() == lltok::MetadataVar) {
6398 AteExtraComma = true;
6399 break;
6400 }
6401 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6402 if (!Val->getType()->isIntOrIntVectorTy())
6403 return Error(EltLoc, "getelementptr index must be an integer");
6404
6405 if (Val->getType()->isVectorTy()) {
6406 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6407 if (GEPWidth && GEPWidth != ValNumEl)
6408 return Error(EltLoc,
6409 "getelementptr vector index has a wrong number of elements");
6410 GEPWidth = ValNumEl;
6411 }
6412 Indices.push_back(Val);
6413 }
6414
6415 SmallPtrSet<Type*, 4> Visited;
6416 if (!Indices.empty() && !Ty->isSized(&Visited))
6417 return Error(Loc, "base element of getelementptr must be sized");
6418
6419 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6420 return Error(Loc, "invalid getelementptr indices");
6421 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6422 if (InBounds)
6423 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6424 return AteExtraComma ? InstExtraComma : InstNormal;
6425}
6426
6427/// ParseExtractValue
6428/// ::= 'extractvalue' TypeAndValue (',' uint32)+
6429int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6430 Value *Val; LocTy Loc;
6431 SmallVector<unsigned, 4> Indices;
6432 bool AteExtraComma;
6433 if (ParseTypeAndValue(Val, Loc, PFS) ||
6434 ParseIndexList(Indices, AteExtraComma))
6435 return true;
6436
6437 if (!Val->getType()->isAggregateType())
6438 return Error(Loc, "extractvalue operand must be aggregate type");
6439
6440 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6441 return Error(Loc, "invalid indices for extractvalue");
6442 Inst = ExtractValueInst::Create(Val, Indices);
6443 return AteExtraComma ? InstExtraComma : InstNormal;
6444}
6445
6446/// ParseInsertValue
6447/// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6448int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6449 Value *Val0, *Val1; LocTy Loc0, Loc1;
6450 SmallVector<unsigned, 4> Indices;
6451 bool AteExtraComma;
6452 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6453 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6454 ParseTypeAndValue(Val1, Loc1, PFS) ||
6455 ParseIndexList(Indices, AteExtraComma))
6456 return true;
6457
6458 if (!Val0->getType()->isAggregateType())
6459 return Error(Loc0, "insertvalue operand must be aggregate type");
6460
6461 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6462 if (!IndexedType)
6463 return Error(Loc0, "invalid indices for insertvalue");
6464 if (IndexedType != Val1->getType())
6465 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6466 getTypeString(Val1->getType()) + "' instead of '" +
6467 getTypeString(IndexedType) + "'");
6468 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6469 return AteExtraComma ? InstExtraComma : InstNormal;
6470}
6471
6472//===----------------------------------------------------------------------===//
6473// Embedded metadata.
6474//===----------------------------------------------------------------------===//
6475
6476/// ParseMDNodeVector
6477/// ::= { Element (',' Element)* }
6478/// Element
6479/// ::= 'null' | TypeAndValue
6480bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6481 if (ParseToken(lltok::lbrace, "expected '{' here"))
6482 return true;
6483
6484 // Check for an empty list.
6485 if (EatIfPresent(lltok::rbrace))
6486 return false;
6487
6488 do {
6489 // Null is a special case since it is typeless.
6490 if (EatIfPresent(lltok::kw_null)) {
6491 Elts.push_back(nullptr);
6492 continue;
6493 }
6494
6495 Metadata *MD;
6496 if (ParseMetadata(MD, nullptr))
6497 return true;
6498 Elts.push_back(MD);
6499 } while (EatIfPresent(lltok::comma));
6500
6501 return ParseToken(lltok::rbrace, "expected end of metadata node");
6502}
6503
6504//===----------------------------------------------------------------------===//
6505// Use-list order directives.
6506//===----------------------------------------------------------------------===//
6507bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6508 SMLoc Loc) {
6509 if (V->use_empty())
6510 return Error(Loc, "value has no uses");
6511
6512 unsigned NumUses = 0;
6513 SmallDenseMap<const Use *, unsigned, 16> Order;
6514 for (const Use &U : V->uses()) {
6515 if (++NumUses > Indexes.size())
6516 break;
6517 Order[&U] = Indexes[NumUses - 1];
6518 }
6519 if (NumUses < 2)
6520 return Error(Loc, "value only has one use");
6521 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6522 return Error(Loc, "wrong number of indexes, expected " +
6523 Twine(std::distance(V->use_begin(), V->use_end())));
6524
6525 V->sortUseList([&](const Use &L, const Use &R) {
6526 return Order.lookup(&L) < Order.lookup(&R);
6527 });
6528 return false;
6529}
6530
6531/// ParseUseListOrderIndexes
6532/// ::= '{' uint32 (',' uint32)+ '}'
6533bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6534 SMLoc Loc = Lex.getLoc();
6535 if (ParseToken(lltok::lbrace, "expected '{' here"))
6536 return true;
6537 if (Lex.getKind() == lltok::rbrace)
6538 return Lex.Error("expected non-empty list of uselistorder indexes");
6539
6540 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6541 // indexes should be distinct numbers in the range [0, size-1], and should
6542 // not be in order.
6543 unsigned Offset = 0;
6544 unsigned Max = 0;
6545 bool IsOrdered = true;
6546 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~svn316259/lib/AsmParser/LLParser.cpp"
, 6546, __PRETTY_FUNCTION__))
;
6547 do {
6548 unsigned Index;
6549 if (ParseUInt32(Index))
6550 return true;
6551
6552 // Update consistency checks.
6553 Offset += Index - Indexes.size();
6554 Max = std::max(Max, Index);
6555 IsOrdered &= Index == Indexes.size();
6556
6557 Indexes.push_back(Index);
6558 } while (EatIfPresent(lltok::comma));
6559
6560 if (ParseToken(lltok::rbrace, "expected '}' here"))
6561 return true;
6562
6563 if (Indexes.size() < 2)
6564 return Error(Loc, "expected >= 2 uselistorder indexes");
6565 if (Offset != 0 || Max >= Indexes.size())
6566 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6567 if (IsOrdered)
6568 return Error(Loc, "expected uselistorder indexes to change the order");
6569
6570 return false;
6571}
6572
6573/// ParseUseListOrder
6574/// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6575bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6576 SMLoc Loc = Lex.getLoc();
6577 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6578 return true;
6579
6580 Value *V;
6581 SmallVector<unsigned, 16> Indexes;
6582 if (ParseTypeAndValue(V, PFS) ||
6583 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6584 ParseUseListOrderIndexes(Indexes))
6585 return true;
6586
6587 return sortUseListOrder(V, Indexes, Loc);
6588}
6589
6590/// ParseUseListOrderBB
6591/// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6592bool LLParser::ParseUseListOrderBB() {
6593 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~svn316259/lib/AsmParser/LLParser.cpp"
, 6593, __PRETTY_FUNCTION__))
;
6594 SMLoc Loc = Lex.getLoc();
6595 Lex.Lex();
6596
6597 ValID Fn, Label;
6598 SmallVector<unsigned, 16> Indexes;
6599 if (ParseValID(Fn) ||
6600 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6601 ParseValID(Label) ||
6602 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6603 ParseUseListOrderIndexes(Indexes))
6604 return true;
6605
6606 // Check the function.
6607 GlobalValue *GV;
6608 if (Fn.Kind == ValID::t_GlobalName)
6609 GV = M->getNamedValue(Fn.StrVal);
6610 else if (Fn.Kind == ValID::t_GlobalID)
6611 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6612 else
6613 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6614 if (!GV)
6615 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6616 auto *F = dyn_cast<Function>(GV);
6617 if (!F)
6618 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6619 if (F->isDeclaration())
6620 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6621
6622 // Check the basic block.
6623 if (Label.Kind == ValID::t_LocalID)
6624 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6625 if (Label.Kind != ValID::t_LocalName)
6626 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6627 Value *V = F->getValueSymbolTable()->lookup(Label.StrVal);
6628 if (!V)
6629 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6630 if (!isa<BasicBlock>(V))
6631 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6632
6633 return sortUseListOrder(V, Indexes, Loc);
6634}