Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 4058, column 7
Assigned value is garbage or undefined

Annotated Source Code

Press '?' to see keyboard shortcuts

clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name LLParser.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-config-compatibility-mode=true -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn349319/build-llvm/lib/AsmParser -I /build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser -I /build/llvm-toolchain-snapshot-8~svn349319/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn349319/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn349319/build-llvm/lib/AsmParser -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn349319=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-12-17-043027-19008-1 -x c++ /build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp -faddrsig
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() || ValidateEndOfModule() ||
75 ValidateEndOfIndex();
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 if (!M)
124 return false;
125 // Handle any function attribute group forward references.
126 for (const auto &RAG : ForwardRefAttrGroups) {
127 Value *V = RAG.first;
128 const std::vector<unsigned> &Attrs = RAG.second;
129 AttrBuilder B;
130
131 for (const auto &Attr : Attrs)
132 B.merge(NumberedAttrBuilders[Attr]);
133
134 if (Function *Fn = dyn_cast<Function>(V)) {
135 AttributeList AS = Fn->getAttributes();
136 AttrBuilder FnAttrs(AS.getFnAttributes());
137 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
138
139 FnAttrs.merge(B);
140
141 // If the alignment was parsed as an attribute, move to the alignment
142 // field.
143 if (FnAttrs.hasAlignmentAttr()) {
144 Fn->setAlignment(FnAttrs.getAlignment());
145 FnAttrs.removeAttribute(Attribute::Alignment);
146 }
147
148 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
149 AttributeSet::get(Context, FnAttrs));
150 Fn->setAttributes(AS);
151 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
152 AttributeList AS = CI->getAttributes();
153 AttrBuilder FnAttrs(AS.getFnAttributes());
154 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
155 FnAttrs.merge(B);
156 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
157 AttributeSet::get(Context, FnAttrs));
158 CI->setAttributes(AS);
159 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
160 AttributeList AS = II->getAttributes();
161 AttrBuilder FnAttrs(AS.getFnAttributes());
162 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
163 FnAttrs.merge(B);
164 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
165 AttributeSet::get(Context, FnAttrs));
166 II->setAttributes(AS);
167 } else if (auto *GV = dyn_cast<GlobalVariable>(V)) {
168 AttrBuilder Attrs(GV->getAttributes());
169 Attrs.merge(B);
170 GV->setAttributes(AttributeSet::get(Context,Attrs));
171 } else {
172 llvm_unreachable("invalid object with forward attribute group reference")::llvm::llvm_unreachable_internal("invalid object with forward attribute group reference"
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 172)
;
173 }
174 }
175
176 // If there are entries in ForwardRefBlockAddresses at this point, the
177 // function was never defined.
178 if (!ForwardRefBlockAddresses.empty())
179 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
180 "expected function name in blockaddress");
181
182 for (const auto &NT : NumberedTypes)
183 if (NT.second.second.isValid())
184 return Error(NT.second.second,
185 "use of undefined type '%" + Twine(NT.first) + "'");
186
187 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
188 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
189 if (I->second.second.isValid())
190 return Error(I->second.second,
191 "use of undefined type named '" + I->getKey() + "'");
192
193 if (!ForwardRefComdats.empty())
194 return Error(ForwardRefComdats.begin()->second,
195 "use of undefined comdat '$" +
196 ForwardRefComdats.begin()->first + "'");
197
198 if (!ForwardRefVals.empty())
199 return Error(ForwardRefVals.begin()->second.second,
200 "use of undefined value '@" + ForwardRefVals.begin()->first +
201 "'");
202
203 if (!ForwardRefValIDs.empty())
204 return Error(ForwardRefValIDs.begin()->second.second,
205 "use of undefined value '@" +
206 Twine(ForwardRefValIDs.begin()->first) + "'");
207
208 if (!ForwardRefMDNodes.empty())
209 return Error(ForwardRefMDNodes.begin()->second.second,
210 "use of undefined metadata '!" +
211 Twine(ForwardRefMDNodes.begin()->first) + "'");
212
213 // Resolve metadata cycles.
214 for (auto &N : NumberedMetadata) {
215 if (N.second && !N.second->isResolved())
216 N.second->resolveCycles();
217 }
218
219 for (auto *Inst : InstsWithTBAATag) {
220 MDNode *MD = Inst->getMetadata(LLVMContext::MD_tbaa);
221 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 221, __PRETTY_FUNCTION__))
;
222 auto *UpgradedMD = UpgradeTBAANode(*MD);
223 if (MD != UpgradedMD)
224 Inst->setMetadata(LLVMContext::MD_tbaa, UpgradedMD);
225 }
226
227 // Look for intrinsic functions and CallInst that need to be upgraded
228 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
229 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
230
231 // Some types could be renamed during loading if several modules are
232 // loaded in the same LLVMContext (LTO scenario). In this case we should
233 // remangle intrinsics names as well.
234 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ) {
235 Function *F = &*FI++;
236 if (auto Remangled = Intrinsic::remangleIntrinsicFunction(F)) {
237 F->replaceAllUsesWith(Remangled.getValue());
238 F->eraseFromParent();
239 }
240 }
241
242 if (UpgradeDebugInfo)
243 llvm::UpgradeDebugInfo(*M);
244
245 UpgradeModuleFlags(*M);
246 UpgradeSectionAttributes(*M);
247
248 if (!Slots)
249 return false;
250 // Initialize the slot mapping.
251 // Because by this point we've parsed and validated everything, we can "steal"
252 // the mapping from LLParser as it doesn't need it anymore.
253 Slots->GlobalValues = std::move(NumberedVals);
254 Slots->MetadataNodes = std::move(NumberedMetadata);
255 for (const auto &I : NamedTypes)
256 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
257 for (const auto &I : NumberedTypes)
258 Slots->Types.insert(std::make_pair(I.first, I.second.first));
259
260 return false;
261}
262
263/// Do final validity and sanity checks at the end of the index.
264bool LLParser::ValidateEndOfIndex() {
265 if (!Index)
266 return false;
267
268 if (!ForwardRefValueInfos.empty())
269 return Error(ForwardRefValueInfos.begin()->second.front().second,
270 "use of undefined summary '^" +
271 Twine(ForwardRefValueInfos.begin()->first) + "'");
272
273 if (!ForwardRefAliasees.empty())
274 return Error(ForwardRefAliasees.begin()->second.front().second,
275 "use of undefined summary '^" +
276 Twine(ForwardRefAliasees.begin()->first) + "'");
277
278 if (!ForwardRefTypeIds.empty())
279 return Error(ForwardRefTypeIds.begin()->second.front().second,
280 "use of undefined type id summary '^" +
281 Twine(ForwardRefTypeIds.begin()->first) + "'");
282
283 return false;
284}
285
286//===----------------------------------------------------------------------===//
287// Top-Level Entities
288//===----------------------------------------------------------------------===//
289
290bool LLParser::ParseTopLevelEntities() {
291 // If there is no Module, then parse just the summary index entries.
292 if (!M) {
293 while (true) {
294 switch (Lex.getKind()) {
295 case lltok::Eof:
296 return false;
297 case lltok::SummaryID:
298 if (ParseSummaryEntry())
299 return true;
300 break;
301 case lltok::kw_source_filename:
302 if (ParseSourceFileName())
303 return true;
304 break;
305 default:
306 // Skip everything else
307 Lex.Lex();
308 }
309 }
310 }
311 while (true) {
312 switch (Lex.getKind()) {
313 default: return TokError("expected top-level entity");
314 case lltok::Eof: return false;
315 case lltok::kw_declare: if (ParseDeclare()) return true; break;
316 case lltok::kw_define: if (ParseDefine()) return true; break;
317 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
318 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
319 case lltok::kw_source_filename:
320 if (ParseSourceFileName())
321 return true;
322 break;
323 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
324 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
325 case lltok::LocalVar: if (ParseNamedType()) return true; break;
326 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
327 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
328 case lltok::ComdatVar: if (parseComdat()) return true; break;
329 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
330 case lltok::SummaryID:
331 if (ParseSummaryEntry())
332 return true;
333 break;
334 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
335 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
336 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
337 case lltok::kw_uselistorder_bb:
338 if (ParseUseListOrderBB())
339 return true;
340 break;
341 }
342 }
343}
344
345/// toplevelentity
346/// ::= 'module' 'asm' STRINGCONSTANT
347bool LLParser::ParseModuleAsm() {
348 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 348, __PRETTY_FUNCTION__))
;
349 Lex.Lex();
350
351 std::string AsmStr;
352 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
353 ParseStringConstant(AsmStr)) return true;
354
355 M->appendModuleInlineAsm(AsmStr);
356 return false;
357}
358
359/// toplevelentity
360/// ::= 'target' 'triple' '=' STRINGCONSTANT
361/// ::= 'target' 'datalayout' '=' STRINGCONSTANT
362bool LLParser::ParseTargetDefinition() {
363 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 363, __PRETTY_FUNCTION__))
;
364 std::string Str;
365 switch (Lex.Lex()) {
366 default: return TokError("unknown target property");
367 case lltok::kw_triple:
368 Lex.Lex();
369 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
370 ParseStringConstant(Str))
371 return true;
372 M->setTargetTriple(Str);
373 return false;
374 case lltok::kw_datalayout:
375 Lex.Lex();
376 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
377 ParseStringConstant(Str))
378 return true;
379 if (DataLayoutStr.empty())
380 M->setDataLayout(Str);
381 return false;
382 }
383}
384
385/// toplevelentity
386/// ::= 'source_filename' '=' STRINGCONSTANT
387bool LLParser::ParseSourceFileName() {
388 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 388, __PRETTY_FUNCTION__))
;
389 Lex.Lex();
390 if (ParseToken(lltok::equal, "expected '=' after source_filename") ||
391 ParseStringConstant(SourceFileName))
392 return true;
393 if (M)
394 M->setSourceFileName(SourceFileName);
395 return false;
396}
397
398/// toplevelentity
399/// ::= 'deplibs' '=' '[' ']'
400/// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
401/// FIXME: Remove in 4.0. Currently parse, but ignore.
402bool LLParser::ParseDepLibs() {
403 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 403, __PRETTY_FUNCTION__))
;
404 Lex.Lex();
405 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
406 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
407 return true;
408
409 if (EatIfPresent(lltok::rsquare))
410 return false;
411
412 do {
413 std::string Str;
414 if (ParseStringConstant(Str)) return true;
415 } while (EatIfPresent(lltok::comma));
416
417 return ParseToken(lltok::rsquare, "expected ']' at end of list");
418}
419
420/// ParseUnnamedType:
421/// ::= LocalVarID '=' 'type' type
422bool LLParser::ParseUnnamedType() {
423 LocTy TypeLoc = Lex.getLoc();
424 unsigned TypeID = Lex.getUIntVal();
425 Lex.Lex(); // eat LocalVarID;
426
427 if (ParseToken(lltok::equal, "expected '=' after name") ||
428 ParseToken(lltok::kw_type, "expected 'type' after '='"))
429 return true;
430
431 Type *Result = nullptr;
432 if (ParseStructDefinition(TypeLoc, "",
433 NumberedTypes[TypeID], Result)) return true;
434
435 if (!isa<StructType>(Result)) {
436 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
437 if (Entry.first)
438 return Error(TypeLoc, "non-struct types may not be recursive");
439 Entry.first = Result;
440 Entry.second = SMLoc();
441 }
442
443 return false;
444}
445
446/// toplevelentity
447/// ::= LocalVar '=' 'type' type
448bool LLParser::ParseNamedType() {
449 std::string Name = Lex.getStrVal();
450 LocTy NameLoc = Lex.getLoc();
451 Lex.Lex(); // eat LocalVar.
452
453 if (ParseToken(lltok::equal, "expected '=' after name") ||
454 ParseToken(lltok::kw_type, "expected 'type' after name"))
455 return true;
456
457 Type *Result = nullptr;
458 if (ParseStructDefinition(NameLoc, Name,
459 NamedTypes[Name], Result)) return true;
460
461 if (!isa<StructType>(Result)) {
462 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
463 if (Entry.first)
464 return Error(NameLoc, "non-struct types may not be recursive");
465 Entry.first = Result;
466 Entry.second = SMLoc();
467 }
468
469 return false;
470}
471
472/// toplevelentity
473/// ::= 'declare' FunctionHeader
474bool LLParser::ParseDeclare() {
475 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 475, __PRETTY_FUNCTION__))
;
476 Lex.Lex();
477
478 std::vector<std::pair<unsigned, MDNode *>> MDs;
479 while (Lex.getKind() == lltok::MetadataVar) {
480 unsigned MDK;
481 MDNode *N;
482 if (ParseMetadataAttachment(MDK, N))
483 return true;
484 MDs.push_back({MDK, N});
485 }
486
487 Function *F;
488 if (ParseFunctionHeader(F, false))
489 return true;
490 for (auto &MD : MDs)
491 F->addMetadata(MD.first, *MD.second);
492 return false;
493}
494
495/// toplevelentity
496/// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
497bool LLParser::ParseDefine() {
498 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 498, __PRETTY_FUNCTION__))
;
499 Lex.Lex();
500
501 Function *F;
502 return ParseFunctionHeader(F, true) ||
503 ParseOptionalFunctionMetadata(*F) ||
504 ParseFunctionBody(*F);
505}
506
507/// ParseGlobalType
508/// ::= 'constant'
509/// ::= 'global'
510bool LLParser::ParseGlobalType(bool &IsConstant) {
511 if (Lex.getKind() == lltok::kw_constant)
512 IsConstant = true;
513 else if (Lex.getKind() == lltok::kw_global)
514 IsConstant = false;
515 else {
516 IsConstant = false;
517 return TokError("expected 'global' or 'constant'");
518 }
519 Lex.Lex();
520 return false;
521}
522
523bool LLParser::ParseOptionalUnnamedAddr(
524 GlobalVariable::UnnamedAddr &UnnamedAddr) {
525 if (EatIfPresent(lltok::kw_unnamed_addr))
526 UnnamedAddr = GlobalValue::UnnamedAddr::Global;
527 else if (EatIfPresent(lltok::kw_local_unnamed_addr))
528 UnnamedAddr = GlobalValue::UnnamedAddr::Local;
529 else
530 UnnamedAddr = GlobalValue::UnnamedAddr::None;
531 return false;
532}
533
534/// ParseUnnamedGlobal:
535/// OptionalVisibility (ALIAS | IFUNC) ...
536/// OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
537/// OptionalDLLStorageClass
538/// ... -> global variable
539/// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
540/// GlobalID '=' OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
541/// OptionalDLLStorageClass
542/// ... -> global variable
543bool LLParser::ParseUnnamedGlobal() {
544 unsigned VarID = NumberedVals.size();
545 std::string Name;
546 LocTy NameLoc = Lex.getLoc();
547
548 // Handle the GlobalID form.
549 if (Lex.getKind() == lltok::GlobalID) {
550 if (Lex.getUIntVal() != VarID)
551 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
552 Twine(VarID) + "'");
553 Lex.Lex(); // eat GlobalID;
554
555 if (ParseToken(lltok::equal, "expected '=' after name"))
556 return true;
557 }
558
559 bool HasLinkage;
560 unsigned Linkage, Visibility, DLLStorageClass;
561 bool DSOLocal;
562 GlobalVariable::ThreadLocalMode TLM;
563 GlobalVariable::UnnamedAddr UnnamedAddr;
564 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
565 DSOLocal) ||
566 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
567 return true;
568
569 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
570 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
571 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
572
573 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
574 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
575}
576
577/// ParseNamedGlobal:
578/// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
579/// GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
580/// OptionalVisibility OptionalDLLStorageClass
581/// ... -> global variable
582bool LLParser::ParseNamedGlobal() {
583 assert(Lex.getKind() == lltok::GlobalVar)((Lex.getKind() == lltok::GlobalVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::GlobalVar", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 583, __PRETTY_FUNCTION__))
;
584 LocTy NameLoc = Lex.getLoc();
585 std::string Name = Lex.getStrVal();
586 Lex.Lex();
587
588 bool HasLinkage;
589 unsigned Linkage, Visibility, DLLStorageClass;
590 bool DSOLocal;
591 GlobalVariable::ThreadLocalMode TLM;
592 GlobalVariable::UnnamedAddr UnnamedAddr;
593 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
594 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
595 DSOLocal) ||
596 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
597 return true;
598
599 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
600 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
601 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
602
603 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
604 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
605}
606
607bool LLParser::parseComdat() {
608 assert(Lex.getKind() == lltok::ComdatVar)((Lex.getKind() == lltok::ComdatVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::ComdatVar", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 608, __PRETTY_FUNCTION__))
;
609 std::string Name = Lex.getStrVal();
610 LocTy NameLoc = Lex.getLoc();
611 Lex.Lex();
612
613 if (ParseToken(lltok::equal, "expected '=' here"))
614 return true;
615
616 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
617 return TokError("expected comdat type");
618
619 Comdat::SelectionKind SK;
620 switch (Lex.getKind()) {
621 default:
622 return TokError("unknown selection kind");
623 case lltok::kw_any:
624 SK = Comdat::Any;
625 break;
626 case lltok::kw_exactmatch:
627 SK = Comdat::ExactMatch;
628 break;
629 case lltok::kw_largest:
630 SK = Comdat::Largest;
631 break;
632 case lltok::kw_noduplicates:
633 SK = Comdat::NoDuplicates;
634 break;
635 case lltok::kw_samesize:
636 SK = Comdat::SameSize;
637 break;
638 }
639 Lex.Lex();
640
641 // See if the comdat was forward referenced, if so, use the comdat.
642 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
643 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
644 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
645 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
646
647 Comdat *C;
648 if (I != ComdatSymTab.end())
649 C = &I->second;
650 else
651 C = M->getOrInsertComdat(Name);
652 C->setSelectionKind(SK);
653
654 return false;
655}
656
657// MDString:
658// ::= '!' STRINGCONSTANT
659bool LLParser::ParseMDString(MDString *&Result) {
660 std::string Str;
661 if (ParseStringConstant(Str)) return true;
662 Result = MDString::get(Context, Str);
663 return false;
664}
665
666// MDNode:
667// ::= '!' MDNodeNumber
668bool LLParser::ParseMDNodeID(MDNode *&Result) {
669 // !{ ..., !42, ... }
670 LocTy IDLoc = Lex.getLoc();
671 unsigned MID = 0;
672 if (ParseUInt32(MID))
673 return true;
674
675 // If not a forward reference, just return it now.
676 if (NumberedMetadata.count(MID)) {
677 Result = NumberedMetadata[MID];
678 return false;
679 }
680
681 // Otherwise, create MDNode forward reference.
682 auto &FwdRef = ForwardRefMDNodes[MID];
683 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
684
685 Result = FwdRef.first.get();
686 NumberedMetadata[MID].reset(Result);
687 return false;
688}
689
690/// ParseNamedMetadata:
691/// !foo = !{ !1, !2 }
692bool LLParser::ParseNamedMetadata() {
693 assert(Lex.getKind() == lltok::MetadataVar)((Lex.getKind() == lltok::MetadataVar) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 693, __PRETTY_FUNCTION__))
;
694 std::string Name = Lex.getStrVal();
695 Lex.Lex();
696
697 if (ParseToken(lltok::equal, "expected '=' here") ||
698 ParseToken(lltok::exclaim, "Expected '!' here") ||
699 ParseToken(lltok::lbrace, "Expected '{' here"))
700 return true;
701
702 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
703 if (Lex.getKind() != lltok::rbrace)
704 do {
705 MDNode *N = nullptr;
706 // Parse DIExpressions inline as a special case. They are still MDNodes,
707 // so they can still appear in named metadata. Remove this logic if they
708 // become plain Metadata.
709 if (Lex.getKind() == lltok::MetadataVar &&
710 Lex.getStrVal() == "DIExpression") {
711 if (ParseDIExpression(N, /*IsDistinct=*/false))
712 return true;
713 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
714 ParseMDNodeID(N)) {
715 return true;
716 }
717 NMD->addOperand(N);
718 } while (EatIfPresent(lltok::comma));
719
720 return ParseToken(lltok::rbrace, "expected end of metadata node");
721}
722
723/// ParseStandaloneMetadata:
724/// !42 = !{...}
725bool LLParser::ParseStandaloneMetadata() {
726 assert(Lex.getKind() == lltok::exclaim)((Lex.getKind() == lltok::exclaim) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::exclaim", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 726, __PRETTY_FUNCTION__))
;
727 Lex.Lex();
728 unsigned MetadataID = 0;
729
730 MDNode *Init;
731 if (ParseUInt32(MetadataID) ||
732 ParseToken(lltok::equal, "expected '=' here"))
733 return true;
734
735 // Detect common error, from old metadata syntax.
736 if (Lex.getKind() == lltok::Type)
737 return TokError("unexpected type in metadata definition");
738
739 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
740 if (Lex.getKind() == lltok::MetadataVar) {
741 if (ParseSpecializedMDNode(Init, IsDistinct))
742 return true;
743 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
744 ParseMDTuple(Init, IsDistinct))
745 return true;
746
747 // See if this was forward referenced, if so, handle it.
748 auto FI = ForwardRefMDNodes.find(MetadataID);
749 if (FI != ForwardRefMDNodes.end()) {
750 FI->second.first->replaceAllUsesWith(Init);
751 ForwardRefMDNodes.erase(FI);
752
753 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 753, __PRETTY_FUNCTION__))
;
754 } else {
755 if (NumberedMetadata.count(MetadataID))
756 return TokError("Metadata id is already used");
757 NumberedMetadata[MetadataID].reset(Init);
758 }
759
760 return false;
761}
762
763// Skips a single module summary entry.
764bool LLParser::SkipModuleSummaryEntry() {
765 // Each module summary entry consists of a tag for the entry
766 // type, followed by a colon, then the fields surrounded by nested sets of
767 // parentheses. The "tag:" looks like a Label. Once parsing support is
768 // in place we will look for the tokens corresponding to the expected tags.
769 if (Lex.getKind() != lltok::kw_gv && Lex.getKind() != lltok::kw_module &&
770 Lex.getKind() != lltok::kw_typeid)
771 return TokError(
772 "Expected 'gv', 'module', or 'typeid' at the start of summary entry");
773 Lex.Lex();
774 if (ParseToken(lltok::colon, "expected ':' at start of summary entry") ||
775 ParseToken(lltok::lparen, "expected '(' at start of summary entry"))
776 return true;
777 // Now walk through the parenthesized entry, until the number of open
778 // parentheses goes back down to 0 (the first '(' was parsed above).
779 unsigned NumOpenParen = 1;
780 do {
781 switch (Lex.getKind()) {
782 case lltok::lparen:
783 NumOpenParen++;
784 break;
785 case lltok::rparen:
786 NumOpenParen--;
787 break;
788 case lltok::Eof:
789 return TokError("found end of file while parsing summary entry");
790 default:
791 // Skip everything in between parentheses.
792 break;
793 }
794 Lex.Lex();
795 } while (NumOpenParen > 0);
796 return false;
797}
798
799/// SummaryEntry
800/// ::= SummaryID '=' GVEntry | ModuleEntry | TypeIdEntry
801bool LLParser::ParseSummaryEntry() {
802 assert(Lex.getKind() == lltok::SummaryID)((Lex.getKind() == lltok::SummaryID) ? static_cast<void>
(0) : __assert_fail ("Lex.getKind() == lltok::SummaryID", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 802, __PRETTY_FUNCTION__))
;
803 unsigned SummaryID = Lex.getUIntVal();
804
805 // For summary entries, colons should be treated as distinct tokens,
806 // not an indication of the end of a label token.
807 Lex.setIgnoreColonInIdentifiers(true);
808
809 Lex.Lex();
810 if (ParseToken(lltok::equal, "expected '=' here"))
811 return true;
812
813 // If we don't have an index object, skip the summary entry.
814 if (!Index)
815 return SkipModuleSummaryEntry();
816
817 switch (Lex.getKind()) {
818 case lltok::kw_gv:
819 return ParseGVEntry(SummaryID);
820 case lltok::kw_module:
821 return ParseModuleEntry(SummaryID);
822 case lltok::kw_typeid:
823 return ParseTypeIdEntry(SummaryID);
824 break;
825 default:
826 return Error(Lex.getLoc(), "unexpected summary kind");
827 }
828 Lex.setIgnoreColonInIdentifiers(false);
829 return false;
830}
831
832static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
833 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
834 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
835}
836
837// If there was an explicit dso_local, update GV. In the absence of an explicit
838// dso_local we keep the default value.
839static void maybeSetDSOLocal(bool DSOLocal, GlobalValue &GV) {
840 if (DSOLocal)
841 GV.setDSOLocal(true);
842}
843
844/// parseIndirectSymbol:
845/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
846/// OptionalVisibility OptionalDLLStorageClass
847/// OptionalThreadLocal OptionalUnnamedAddr
848// 'alias|ifunc' IndirectSymbol
849///
850/// IndirectSymbol
851/// ::= TypeAndValue
852///
853/// Everything through OptionalUnnamedAddr has already been parsed.
854///
855bool LLParser::parseIndirectSymbol(const std::string &Name, LocTy NameLoc,
856 unsigned L, unsigned Visibility,
857 unsigned DLLStorageClass, bool DSOLocal,
858 GlobalVariable::ThreadLocalMode TLM,
859 GlobalVariable::UnnamedAddr UnnamedAddr) {
860 bool IsAlias;
861 if (Lex.getKind() == lltok::kw_alias)
862 IsAlias = true;
863 else if (Lex.getKind() == lltok::kw_ifunc)
864 IsAlias = false;
865 else
866 llvm_unreachable("Not an alias or ifunc!")::llvm::llvm_unreachable_internal("Not an alias or ifunc!", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 866)
;
867 Lex.Lex();
868
869 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
870
871 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
872 return Error(NameLoc, "invalid linkage type for alias");
873
874 if (!isValidVisibilityForLinkage(Visibility, L))
875 return Error(NameLoc,
876 "symbol with local linkage must have default visibility");
877
878 Type *Ty;
879 LocTy ExplicitTypeLoc = Lex.getLoc();
880 if (ParseType(Ty) ||
881 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
882 return true;
883
884 Constant *Aliasee;
885 LocTy AliaseeLoc = Lex.getLoc();
886 if (Lex.getKind() != lltok::kw_bitcast &&
887 Lex.getKind() != lltok::kw_getelementptr &&
888 Lex.getKind() != lltok::kw_addrspacecast &&
889 Lex.getKind() != lltok::kw_inttoptr) {
890 if (ParseGlobalTypeAndValue(Aliasee))
891 return true;
892 } else {
893 // The bitcast dest type is not present, it is implied by the dest type.
894 ValID ID;
895 if (ParseValID(ID))
896 return true;
897 if (ID.Kind != ValID::t_Constant)
898 return Error(AliaseeLoc, "invalid aliasee");
899 Aliasee = ID.ConstantVal;
900 }
901
902 Type *AliaseeType = Aliasee->getType();
903 auto *PTy = dyn_cast<PointerType>(AliaseeType);
904 if (!PTy)
905 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
906 unsigned AddrSpace = PTy->getAddressSpace();
907
908 if (IsAlias && Ty != PTy->getElementType())
909 return Error(
910 ExplicitTypeLoc,
911 "explicit pointee type doesn't match operand's pointee type");
912
913 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
914 return Error(
915 ExplicitTypeLoc,
916 "explicit pointee type should be a function type");
917
918 GlobalValue *GVal = nullptr;
919
920 // See if the alias was forward referenced, if so, prepare to replace the
921 // forward reference.
922 if (!Name.empty()) {
923 GVal = M->getNamedValue(Name);
924 if (GVal) {
925 if (!ForwardRefVals.erase(Name))
926 return Error(NameLoc, "redefinition of global '@" + Name + "'");
927 }
928 } else {
929 auto I = ForwardRefValIDs.find(NumberedVals.size());
930 if (I != ForwardRefValIDs.end()) {
931 GVal = I->second.first;
932 ForwardRefValIDs.erase(I);
933 }
934 }
935
936 // Okay, create the alias but do not insert it into the module yet.
937 std::unique_ptr<GlobalIndirectSymbol> GA;
938 if (IsAlias)
939 GA.reset(GlobalAlias::create(Ty, AddrSpace,
940 (GlobalValue::LinkageTypes)Linkage, Name,
941 Aliasee, /*Parent*/ nullptr));
942 else
943 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
944 (GlobalValue::LinkageTypes)Linkage, Name,
945 Aliasee, /*Parent*/ nullptr));
946 GA->setThreadLocalMode(TLM);
947 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
948 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
949 GA->setUnnamedAddr(UnnamedAddr);
950 maybeSetDSOLocal(DSOLocal, *GA);
951
952 if (Name.empty())
953 NumberedVals.push_back(GA.get());
954
955 if (GVal) {
956 // Verify that types agree.
957 if (GVal->getType() != GA->getType())
958 return Error(
959 ExplicitTypeLoc,
960 "forward reference and definition of alias have different types");
961
962 // If they agree, just RAUW the old value with the alias and remove the
963 // forward ref info.
964 GVal->replaceAllUsesWith(GA.get());
965 GVal->eraseFromParent();
966 }
967
968 // Insert into the module, we know its name won't collide now.
969 if (IsAlias)
970 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
971 else
972 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
973 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 973, __PRETTY_FUNCTION__))
;
974
975 // The module owns this now
976 GA.release();
977
978 return false;
979}
980
981/// ParseGlobal
982/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
983/// OptionalVisibility OptionalDLLStorageClass
984/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
985/// OptionalExternallyInitialized GlobalType Type Const OptionalAttrs
986/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
987/// OptionalDLLStorageClass OptionalThreadLocal OptionalUnnamedAddr
988/// OptionalAddrSpace OptionalExternallyInitialized GlobalType Type
989/// Const OptionalAttrs
990///
991/// Everything up to and including OptionalUnnamedAddr has been parsed
992/// already.
993///
994bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
995 unsigned Linkage, bool HasLinkage,
996 unsigned Visibility, unsigned DLLStorageClass,
997 bool DSOLocal, GlobalVariable::ThreadLocalMode TLM,
998 GlobalVariable::UnnamedAddr UnnamedAddr) {
999 if (!isValidVisibilityForLinkage(Visibility, Linkage))
1000 return Error(NameLoc,
1001 "symbol with local linkage must have default visibility");
1002
1003 unsigned AddrSpace;
1004 bool IsConstant, IsExternallyInitialized;
1005 LocTy IsExternallyInitializedLoc;
1006 LocTy TyLoc;
1007
1008 Type *Ty = nullptr;
1009 if (ParseOptionalAddrSpace(AddrSpace) ||
1010 ParseOptionalToken(lltok::kw_externally_initialized,
1011 IsExternallyInitialized,
1012 &IsExternallyInitializedLoc) ||
1013 ParseGlobalType(IsConstant) ||
1014 ParseType(Ty, TyLoc))
1015 return true;
1016
1017 // If the linkage is specified and is external, then no initializer is
1018 // present.
1019 Constant *Init = nullptr;
1020 if (!HasLinkage ||
1021 !GlobalValue::isValidDeclarationLinkage(
1022 (GlobalValue::LinkageTypes)Linkage)) {
1023 if (ParseGlobalValue(Ty, Init))
1024 return true;
1025 }
1026
1027 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
1028 return Error(TyLoc, "invalid type for global variable");
1029
1030 GlobalValue *GVal = nullptr;
1031
1032 // See if the global was forward referenced, if so, use the global.
1033 if (!Name.empty()) {
1034 GVal = M->getNamedValue(Name);
1035 if (GVal) {
1036 if (!ForwardRefVals.erase(Name))
1037 return Error(NameLoc, "redefinition of global '@" + Name + "'");
1038 }
1039 } else {
1040 auto I = ForwardRefValIDs.find(NumberedVals.size());
1041 if (I != ForwardRefValIDs.end()) {
1042 GVal = I->second.first;
1043 ForwardRefValIDs.erase(I);
1044 }
1045 }
1046
1047 GlobalVariable *GV;
1048 if (!GVal) {
1049 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
1050 Name, nullptr, GlobalVariable::NotThreadLocal,
1051 AddrSpace);
1052 } else {
1053 if (GVal->getValueType() != Ty)
1054 return Error(TyLoc,
1055 "forward reference and definition of global have different types");
1056
1057 GV = cast<GlobalVariable>(GVal);
1058
1059 // Move the forward-reference to the correct spot in the module.
1060 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
1061 }
1062
1063 if (Name.empty())
1064 NumberedVals.push_back(GV);
1065
1066 // Set the parsed properties on the global.
1067 if (Init)
1068 GV->setInitializer(Init);
1069 GV->setConstant(IsConstant);
1070 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
1071 maybeSetDSOLocal(DSOLocal, *GV);
1072 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
1073 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
1074 GV->setExternallyInitialized(IsExternallyInitialized);
1075 GV->setThreadLocalMode(TLM);
1076 GV->setUnnamedAddr(UnnamedAddr);
1077
1078 // Parse attributes on the global.
1079 while (Lex.getKind() == lltok::comma) {
1080 Lex.Lex();
1081
1082 if (Lex.getKind() == lltok::kw_section) {
1083 Lex.Lex();
1084 GV->setSection(Lex.getStrVal());
1085 if (ParseToken(lltok::StringConstant, "expected global section string"))
1086 return true;
1087 } else if (Lex.getKind() == lltok::kw_align) {
1088 unsigned Alignment;
1089 if (ParseOptionalAlignment(Alignment)) return true;
1090 GV->setAlignment(Alignment);
1091 } else if (Lex.getKind() == lltok::MetadataVar) {
1092 if (ParseGlobalObjectMetadataAttachment(*GV))
1093 return true;
1094 } else {
1095 Comdat *C;
1096 if (parseOptionalComdat(Name, C))
1097 return true;
1098 if (C)
1099 GV->setComdat(C);
1100 else
1101 return TokError("unknown global variable property!");
1102 }
1103 }
1104
1105 AttrBuilder Attrs;
1106 LocTy BuiltinLoc;
1107 std::vector<unsigned> FwdRefAttrGrps;
1108 if (ParseFnAttributeValuePairs(Attrs, FwdRefAttrGrps, false, BuiltinLoc))
1109 return true;
1110 if (Attrs.hasAttributes() || !FwdRefAttrGrps.empty()) {
1111 GV->setAttributes(AttributeSet::get(Context, Attrs));
1112 ForwardRefAttrGroups[GV] = FwdRefAttrGrps;
1113 }
1114
1115 return false;
1116}
1117
1118/// ParseUnnamedAttrGrp
1119/// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
1120bool LLParser::ParseUnnamedAttrGrp() {
1121 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 1121, __PRETTY_FUNCTION__))
;
1122 LocTy AttrGrpLoc = Lex.getLoc();
1123 Lex.Lex();
1124
1125 if (Lex.getKind() != lltok::AttrGrpID)
1126 return TokError("expected attribute group id");
1127
1128 unsigned VarID = Lex.getUIntVal();
1129 std::vector<unsigned> unused;
1130 LocTy BuiltinLoc;
1131 Lex.Lex();
1132
1133 if (ParseToken(lltok::equal, "expected '=' here") ||
1134 ParseToken(lltok::lbrace, "expected '{' here") ||
1135 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
1136 BuiltinLoc) ||
1137 ParseToken(lltok::rbrace, "expected end of attribute group"))
1138 return true;
1139
1140 if (!NumberedAttrBuilders[VarID].hasAttributes())
1141 return Error(AttrGrpLoc, "attribute group has no attributes");
1142
1143 return false;
1144}
1145
1146/// ParseFnAttributeValuePairs
1147/// ::= <attr> | <attr> '=' <value>
1148bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
1149 std::vector<unsigned> &FwdRefAttrGrps,
1150 bool inAttrGrp, LocTy &BuiltinLoc) {
1151 bool HaveError = false;
1152
1153 B.clear();
1154
1155 while (true) {
1156 lltok::Kind Token = Lex.getKind();
1157 if (Token == lltok::kw_builtin)
1158 BuiltinLoc = Lex.getLoc();
1159 switch (Token) {
1160 default:
1161 if (!inAttrGrp) return HaveError;
1162 return Error(Lex.getLoc(), "unterminated attribute group");
1163 case lltok::rbrace:
1164 // Finished.
1165 return false;
1166
1167 case lltok::AttrGrpID: {
1168 // Allow a function to reference an attribute group:
1169 //
1170 // define void @foo() #1 { ... }
1171 if (inAttrGrp)
1172 HaveError |=
1173 Error(Lex.getLoc(),
1174 "cannot have an attribute group reference in an attribute group");
1175
1176 unsigned AttrGrpNum = Lex.getUIntVal();
1177 if (inAttrGrp) break;
1178
1179 // Save the reference to the attribute group. We'll fill it in later.
1180 FwdRefAttrGrps.push_back(AttrGrpNum);
1181 break;
1182 }
1183 // Target-dependent attributes:
1184 case lltok::StringConstant: {
1185 if (ParseStringAttribute(B))
1186 return true;
1187 continue;
1188 }
1189
1190 // Target-independent attributes:
1191 case lltok::kw_align: {
1192 // As a hack, we allow function alignment to be initially parsed as an
1193 // attribute on a function declaration/definition or added to an attribute
1194 // group and later moved to the alignment field.
1195 unsigned Alignment;
1196 if (inAttrGrp) {
1197 Lex.Lex();
1198 if (ParseToken(lltok::equal, "expected '=' here") ||
1199 ParseUInt32(Alignment))
1200 return true;
1201 } else {
1202 if (ParseOptionalAlignment(Alignment))
1203 return true;
1204 }
1205 B.addAlignmentAttr(Alignment);
1206 continue;
1207 }
1208 case lltok::kw_alignstack: {
1209 unsigned Alignment;
1210 if (inAttrGrp) {
1211 Lex.Lex();
1212 if (ParseToken(lltok::equal, "expected '=' here") ||
1213 ParseUInt32(Alignment))
1214 return true;
1215 } else {
1216 if (ParseOptionalStackAlignment(Alignment))
1217 return true;
1218 }
1219 B.addStackAlignmentAttr(Alignment);
1220 continue;
1221 }
1222 case lltok::kw_allocsize: {
1223 unsigned ElemSizeArg;
1224 Optional<unsigned> NumElemsArg;
1225 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1226 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1227 return true;
1228 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1229 continue;
1230 }
1231 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1232 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1233 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1234 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1235 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1236 case lltok::kw_inaccessiblememonly:
1237 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1238 case lltok::kw_inaccessiblemem_or_argmemonly:
1239 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1240 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1241 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1242 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1243 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1244 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1245 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1246 case lltok::kw_noimplicitfloat:
1247 B.addAttribute(Attribute::NoImplicitFloat); break;
1248 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1249 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1250 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1251 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1252 case lltok::kw_nocf_check: B.addAttribute(Attribute::NoCfCheck); break;
1253 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1254 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1255 case lltok::kw_optforfuzzing:
1256 B.addAttribute(Attribute::OptForFuzzing); break;
1257 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1258 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1259 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1260 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1261 case lltok::kw_returns_twice:
1262 B.addAttribute(Attribute::ReturnsTwice); break;
1263 case lltok::kw_speculatable: B.addAttribute(Attribute::Speculatable); break;
1264 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1265 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1266 case lltok::kw_sspstrong:
1267 B.addAttribute(Attribute::StackProtectStrong); break;
1268 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1269 case lltok::kw_shadowcallstack:
1270 B.addAttribute(Attribute::ShadowCallStack); break;
1271 case lltok::kw_sanitize_address:
1272 B.addAttribute(Attribute::SanitizeAddress); break;
1273 case lltok::kw_sanitize_hwaddress:
1274 B.addAttribute(Attribute::SanitizeHWAddress); break;
1275 case lltok::kw_sanitize_thread:
1276 B.addAttribute(Attribute::SanitizeThread); break;
1277 case lltok::kw_sanitize_memory:
1278 B.addAttribute(Attribute::SanitizeMemory); break;
1279 case lltok::kw_speculative_load_hardening:
1280 B.addAttribute(Attribute::SpeculativeLoadHardening);
1281 break;
1282 case lltok::kw_strictfp: B.addAttribute(Attribute::StrictFP); break;
1283 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1284 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1285
1286 // Error handling.
1287 case lltok::kw_inreg:
1288 case lltok::kw_signext:
1289 case lltok::kw_zeroext:
1290 HaveError |=
1291 Error(Lex.getLoc(),
1292 "invalid use of attribute on a function");
1293 break;
1294 case lltok::kw_byval:
1295 case lltok::kw_dereferenceable:
1296 case lltok::kw_dereferenceable_or_null:
1297 case lltok::kw_inalloca:
1298 case lltok::kw_nest:
1299 case lltok::kw_noalias:
1300 case lltok::kw_nocapture:
1301 case lltok::kw_nonnull:
1302 case lltok::kw_returned:
1303 case lltok::kw_sret:
1304 case lltok::kw_swifterror:
1305 case lltok::kw_swiftself:
1306 HaveError |=
1307 Error(Lex.getLoc(),
1308 "invalid use of parameter-only attribute on a function");
1309 break;
1310 }
1311
1312 Lex.Lex();
1313 }
1314}
1315
1316//===----------------------------------------------------------------------===//
1317// GlobalValue Reference/Resolution Routines.
1318//===----------------------------------------------------------------------===//
1319
1320static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1321 const std::string &Name) {
1322 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1323 return Function::Create(FT, GlobalValue::ExternalWeakLinkage,
1324 PTy->getAddressSpace(), Name, M);
1325 else
1326 return new GlobalVariable(*M, PTy->getElementType(), false,
1327 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1328 nullptr, GlobalVariable::NotThreadLocal,
1329 PTy->getAddressSpace());
1330}
1331
1332Value *LLParser::checkValidVariableType(LocTy Loc, const Twine &Name, Type *Ty,
1333 Value *Val, bool IsCall) {
1334 if (Val->getType() == Ty)
1335 return Val;
1336 // For calls we also accept variables in the program address space.
1337 Type *SuggestedTy = Ty;
1338 if (IsCall && isa<PointerType>(Ty)) {
1339 Type *TyInProgAS = cast<PointerType>(Ty)->getElementType()->getPointerTo(
1340 M->getDataLayout().getProgramAddressSpace());
1341 SuggestedTy = TyInProgAS;
1342 if (Val->getType() == TyInProgAS)
1343 return Val;
1344 }
1345 if (Ty->isLabelTy())
1346 Error(Loc, "'" + Name + "' is not a basic block");
1347 else
1348 Error(Loc, "'" + Name + "' defined with type '" +
1349 getTypeString(Val->getType()) + "' but expected '" +
1350 getTypeString(SuggestedTy) + "'");
1351 return nullptr;
1352}
1353
1354/// GetGlobalVal - Get a value with the specified name or ID, creating a
1355/// forward reference record if needed. This can return null if the value
1356/// exists but does not have the right type.
1357GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1358 LocTy Loc, bool IsCall) {
1359 PointerType *PTy = dyn_cast<PointerType>(Ty);
1360 if (!PTy) {
1361 Error(Loc, "global variable reference must have pointer type");
1362 return nullptr;
1363 }
1364
1365 // Look this name up in the normal function symbol table.
1366 GlobalValue *Val =
1367 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1368
1369 // If this is a forward reference for the value, see if we already created a
1370 // forward ref record.
1371 if (!Val) {
1372 auto I = ForwardRefVals.find(Name);
1373 if (I != ForwardRefVals.end())
1374 Val = I->second.first;
1375 }
1376
1377 // If we have the value in the symbol table or fwd-ref table, return it.
1378 if (Val)
1379 return cast_or_null<GlobalValue>(
1380 checkValidVariableType(Loc, "@" + Name, Ty, Val, IsCall));
1381
1382 // Otherwise, create a new forward reference for this value and remember it.
1383 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1384 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1385 return FwdVal;
1386}
1387
1388GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc,
1389 bool IsCall) {
1390 PointerType *PTy = dyn_cast<PointerType>(Ty);
1391 if (!PTy) {
1392 Error(Loc, "global variable reference must have pointer type");
1393 return nullptr;
1394 }
1395
1396 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1397
1398 // If this is a forward reference for the value, see if we already created a
1399 // forward ref record.
1400 if (!Val) {
1401 auto I = ForwardRefValIDs.find(ID);
1402 if (I != ForwardRefValIDs.end())
1403 Val = I->second.first;
1404 }
1405
1406 // If we have the value in the symbol table or fwd-ref table, return it.
1407 if (Val)
1408 return cast_or_null<GlobalValue>(
1409 checkValidVariableType(Loc, "@" + Twine(ID), Ty, Val, IsCall));
1410
1411 // Otherwise, create a new forward reference for this value and remember it.
1412 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1413 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1414 return FwdVal;
1415}
1416
1417//===----------------------------------------------------------------------===//
1418// Comdat Reference/Resolution Routines.
1419//===----------------------------------------------------------------------===//
1420
1421Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1422 // Look this name up in the comdat symbol table.
1423 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1424 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1425 if (I != ComdatSymTab.end())
1426 return &I->second;
1427
1428 // Otherwise, create a new forward reference for this value and remember it.
1429 Comdat *C = M->getOrInsertComdat(Name);
1430 ForwardRefComdats[Name] = Loc;
1431 return C;
1432}
1433
1434//===----------------------------------------------------------------------===//
1435// Helper Routines.
1436//===----------------------------------------------------------------------===//
1437
1438/// ParseToken - If the current token has the specified kind, eat it and return
1439/// success. Otherwise, emit the specified error and return failure.
1440bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1441 if (Lex.getKind() != T)
1442 return TokError(ErrMsg);
1443 Lex.Lex();
1444 return false;
1445}
1446
1447/// ParseStringConstant
1448/// ::= StringConstant
1449bool LLParser::ParseStringConstant(std::string &Result) {
1450 if (Lex.getKind() != lltok::StringConstant)
1451 return TokError("expected string constant");
1452 Result = Lex.getStrVal();
1453 Lex.Lex();
1454 return false;
1455}
1456
1457/// ParseUInt32
1458/// ::= uint32
1459bool LLParser::ParseUInt32(uint32_t &Val) {
1460 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1461 return TokError("expected integer");
1462 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1463 if (Val64 != unsigned(Val64))
1464 return TokError("expected 32-bit integer (too large)");
1465 Val = Val64;
1466 Lex.Lex();
1467 return false;
1468}
1469
1470/// ParseUInt64
1471/// ::= uint64
1472bool LLParser::ParseUInt64(uint64_t &Val) {
1473 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1474 return TokError("expected integer");
1475 Val = Lex.getAPSIntVal().getLimitedValue();
1476 Lex.Lex();
1477 return false;
1478}
1479
1480/// ParseTLSModel
1481/// := 'localdynamic'
1482/// := 'initialexec'
1483/// := 'localexec'
1484bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1485 switch (Lex.getKind()) {
1486 default:
1487 return TokError("expected localdynamic, initialexec or localexec");
1488 case lltok::kw_localdynamic:
1489 TLM = GlobalVariable::LocalDynamicTLSModel;
1490 break;
1491 case lltok::kw_initialexec:
1492 TLM = GlobalVariable::InitialExecTLSModel;
1493 break;
1494 case lltok::kw_localexec:
1495 TLM = GlobalVariable::LocalExecTLSModel;
1496 break;
1497 }
1498
1499 Lex.Lex();
1500 return false;
1501}
1502
1503/// ParseOptionalThreadLocal
1504/// := /*empty*/
1505/// := 'thread_local'
1506/// := 'thread_local' '(' tlsmodel ')'
1507bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1508 TLM = GlobalVariable::NotThreadLocal;
1509 if (!EatIfPresent(lltok::kw_thread_local))
1510 return false;
1511
1512 TLM = GlobalVariable::GeneralDynamicTLSModel;
1513 if (Lex.getKind() == lltok::lparen) {
1514 Lex.Lex();
1515 return ParseTLSModel(TLM) ||
1516 ParseToken(lltok::rparen, "expected ')' after thread local model");
1517 }
1518 return false;
1519}
1520
1521/// ParseOptionalAddrSpace
1522/// := /*empty*/
1523/// := 'addrspace' '(' uint32 ')'
1524bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace, unsigned DefaultAS) {
1525 AddrSpace = DefaultAS;
1526 if (!EatIfPresent(lltok::kw_addrspace))
1527 return false;
1528 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1529 ParseUInt32(AddrSpace) ||
1530 ParseToken(lltok::rparen, "expected ')' in address space");
1531}
1532
1533/// ParseStringAttribute
1534/// := StringConstant
1535/// := StringConstant '=' StringConstant
1536bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1537 std::string Attr = Lex.getStrVal();
1538 Lex.Lex();
1539 std::string Val;
1540 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1541 return true;
1542 B.addAttribute(Attr, Val);
1543 return false;
1544}
1545
1546/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1547bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1548 bool HaveError = false;
1549
1550 B.clear();
1551
1552 while (true) {
1553 lltok::Kind Token = Lex.getKind();
1554 switch (Token) {
1555 default: // End of attributes.
1556 return HaveError;
1557 case lltok::StringConstant: {
1558 if (ParseStringAttribute(B))
1559 return true;
1560 continue;
1561 }
1562 case lltok::kw_align: {
1563 unsigned Alignment;
1564 if (ParseOptionalAlignment(Alignment))
1565 return true;
1566 B.addAlignmentAttr(Alignment);
1567 continue;
1568 }
1569 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1570 case lltok::kw_dereferenceable: {
1571 uint64_t Bytes;
1572 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1573 return true;
1574 B.addDereferenceableAttr(Bytes);
1575 continue;
1576 }
1577 case lltok::kw_dereferenceable_or_null: {
1578 uint64_t Bytes;
1579 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1580 return true;
1581 B.addDereferenceableOrNullAttr(Bytes);
1582 continue;
1583 }
1584 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1585 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1586 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1587 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1588 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1589 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1590 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1591 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1592 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1593 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1594 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1595 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1596 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1597 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1598 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1599
1600 case lltok::kw_alignstack:
1601 case lltok::kw_alwaysinline:
1602 case lltok::kw_argmemonly:
1603 case lltok::kw_builtin:
1604 case lltok::kw_inlinehint:
1605 case lltok::kw_jumptable:
1606 case lltok::kw_minsize:
1607 case lltok::kw_naked:
1608 case lltok::kw_nobuiltin:
1609 case lltok::kw_noduplicate:
1610 case lltok::kw_noimplicitfloat:
1611 case lltok::kw_noinline:
1612 case lltok::kw_nonlazybind:
1613 case lltok::kw_noredzone:
1614 case lltok::kw_noreturn:
1615 case lltok::kw_nocf_check:
1616 case lltok::kw_nounwind:
1617 case lltok::kw_optforfuzzing:
1618 case lltok::kw_optnone:
1619 case lltok::kw_optsize:
1620 case lltok::kw_returns_twice:
1621 case lltok::kw_sanitize_address:
1622 case lltok::kw_sanitize_hwaddress:
1623 case lltok::kw_sanitize_memory:
1624 case lltok::kw_sanitize_thread:
1625 case lltok::kw_speculative_load_hardening:
1626 case lltok::kw_ssp:
1627 case lltok::kw_sspreq:
1628 case lltok::kw_sspstrong:
1629 case lltok::kw_safestack:
1630 case lltok::kw_shadowcallstack:
1631 case lltok::kw_strictfp:
1632 case lltok::kw_uwtable:
1633 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1634 break;
1635 }
1636
1637 Lex.Lex();
1638 }
1639}
1640
1641/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1642bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1643 bool HaveError = false;
1644
1645 B.clear();
1646
1647 while (true) {
1648 lltok::Kind Token = Lex.getKind();
1649 switch (Token) {
1650 default: // End of attributes.
1651 return HaveError;
1652 case lltok::StringConstant: {
1653 if (ParseStringAttribute(B))
1654 return true;
1655 continue;
1656 }
1657 case lltok::kw_dereferenceable: {
1658 uint64_t Bytes;
1659 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1660 return true;
1661 B.addDereferenceableAttr(Bytes);
1662 continue;
1663 }
1664 case lltok::kw_dereferenceable_or_null: {
1665 uint64_t Bytes;
1666 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1667 return true;
1668 B.addDereferenceableOrNullAttr(Bytes);
1669 continue;
1670 }
1671 case lltok::kw_align: {
1672 unsigned Alignment;
1673 if (ParseOptionalAlignment(Alignment))
1674 return true;
1675 B.addAlignmentAttr(Alignment);
1676 continue;
1677 }
1678 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1679 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1680 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1681 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1682 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1683
1684 // Error handling.
1685 case lltok::kw_byval:
1686 case lltok::kw_inalloca:
1687 case lltok::kw_nest:
1688 case lltok::kw_nocapture:
1689 case lltok::kw_returned:
1690 case lltok::kw_sret:
1691 case lltok::kw_swifterror:
1692 case lltok::kw_swiftself:
1693 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1694 break;
1695
1696 case lltok::kw_alignstack:
1697 case lltok::kw_alwaysinline:
1698 case lltok::kw_argmemonly:
1699 case lltok::kw_builtin:
1700 case lltok::kw_cold:
1701 case lltok::kw_inlinehint:
1702 case lltok::kw_jumptable:
1703 case lltok::kw_minsize:
1704 case lltok::kw_naked:
1705 case lltok::kw_nobuiltin:
1706 case lltok::kw_noduplicate:
1707 case lltok::kw_noimplicitfloat:
1708 case lltok::kw_noinline:
1709 case lltok::kw_nonlazybind:
1710 case lltok::kw_noredzone:
1711 case lltok::kw_noreturn:
1712 case lltok::kw_nocf_check:
1713 case lltok::kw_nounwind:
1714 case lltok::kw_optforfuzzing:
1715 case lltok::kw_optnone:
1716 case lltok::kw_optsize:
1717 case lltok::kw_returns_twice:
1718 case lltok::kw_sanitize_address:
1719 case lltok::kw_sanitize_hwaddress:
1720 case lltok::kw_sanitize_memory:
1721 case lltok::kw_sanitize_thread:
1722 case lltok::kw_speculative_load_hardening:
1723 case lltok::kw_ssp:
1724 case lltok::kw_sspreq:
1725 case lltok::kw_sspstrong:
1726 case lltok::kw_safestack:
1727 case lltok::kw_shadowcallstack:
1728 case lltok::kw_strictfp:
1729 case lltok::kw_uwtable:
1730 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1731 break;
1732
1733 case lltok::kw_readnone:
1734 case lltok::kw_readonly:
1735 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1736 }
1737
1738 Lex.Lex();
1739 }
1740}
1741
1742static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1743 HasLinkage = true;
1744 switch (Kind) {
1745 default:
1746 HasLinkage = false;
1747 return GlobalValue::ExternalLinkage;
1748 case lltok::kw_private:
1749 return GlobalValue::PrivateLinkage;
1750 case lltok::kw_internal:
1751 return GlobalValue::InternalLinkage;
1752 case lltok::kw_weak:
1753 return GlobalValue::WeakAnyLinkage;
1754 case lltok::kw_weak_odr:
1755 return GlobalValue::WeakODRLinkage;
1756 case lltok::kw_linkonce:
1757 return GlobalValue::LinkOnceAnyLinkage;
1758 case lltok::kw_linkonce_odr:
1759 return GlobalValue::LinkOnceODRLinkage;
1760 case lltok::kw_available_externally:
1761 return GlobalValue::AvailableExternallyLinkage;
1762 case lltok::kw_appending:
1763 return GlobalValue::AppendingLinkage;
1764 case lltok::kw_common:
1765 return GlobalValue::CommonLinkage;
1766 case lltok::kw_extern_weak:
1767 return GlobalValue::ExternalWeakLinkage;
1768 case lltok::kw_external:
1769 return GlobalValue::ExternalLinkage;
1770 }
1771}
1772
1773/// ParseOptionalLinkage
1774/// ::= /*empty*/
1775/// ::= 'private'
1776/// ::= 'internal'
1777/// ::= 'weak'
1778/// ::= 'weak_odr'
1779/// ::= 'linkonce'
1780/// ::= 'linkonce_odr'
1781/// ::= 'available_externally'
1782/// ::= 'appending'
1783/// ::= 'common'
1784/// ::= 'extern_weak'
1785/// ::= 'external'
1786bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1787 unsigned &Visibility,
1788 unsigned &DLLStorageClass,
1789 bool &DSOLocal) {
1790 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1791 if (HasLinkage)
1792 Lex.Lex();
1793 ParseOptionalDSOLocal(DSOLocal);
1794 ParseOptionalVisibility(Visibility);
1795 ParseOptionalDLLStorageClass(DLLStorageClass);
1796
1797 if (DSOLocal && DLLStorageClass == GlobalValue::DLLImportStorageClass) {
1798 return Error(Lex.getLoc(), "dso_location and DLL-StorageClass mismatch");
1799 }
1800
1801 return false;
1802}
1803
1804void LLParser::ParseOptionalDSOLocal(bool &DSOLocal) {
1805 switch (Lex.getKind()) {
1806 default:
1807 DSOLocal = false;
1808 break;
1809 case lltok::kw_dso_local:
1810 DSOLocal = true;
1811 Lex.Lex();
1812 break;
1813 case lltok::kw_dso_preemptable:
1814 DSOLocal = false;
1815 Lex.Lex();
1816 break;
1817 }
1818}
1819
1820/// ParseOptionalVisibility
1821/// ::= /*empty*/
1822/// ::= 'default'
1823/// ::= 'hidden'
1824/// ::= 'protected'
1825///
1826void LLParser::ParseOptionalVisibility(unsigned &Res) {
1827 switch (Lex.getKind()) {
1828 default:
1829 Res = GlobalValue::DefaultVisibility;
1830 return;
1831 case lltok::kw_default:
1832 Res = GlobalValue::DefaultVisibility;
1833 break;
1834 case lltok::kw_hidden:
1835 Res = GlobalValue::HiddenVisibility;
1836 break;
1837 case lltok::kw_protected:
1838 Res = GlobalValue::ProtectedVisibility;
1839 break;
1840 }
1841 Lex.Lex();
1842}
1843
1844/// ParseOptionalDLLStorageClass
1845/// ::= /*empty*/
1846/// ::= 'dllimport'
1847/// ::= 'dllexport'
1848///
1849void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1850 switch (Lex.getKind()) {
1851 default:
1852 Res = GlobalValue::DefaultStorageClass;
1853 return;
1854 case lltok::kw_dllimport:
1855 Res = GlobalValue::DLLImportStorageClass;
1856 break;
1857 case lltok::kw_dllexport:
1858 Res = GlobalValue::DLLExportStorageClass;
1859 break;
1860 }
1861 Lex.Lex();
1862}
1863
1864/// ParseOptionalCallingConv
1865/// ::= /*empty*/
1866/// ::= 'ccc'
1867/// ::= 'fastcc'
1868/// ::= 'intel_ocl_bicc'
1869/// ::= 'coldcc'
1870/// ::= 'x86_stdcallcc'
1871/// ::= 'x86_fastcallcc'
1872/// ::= 'x86_thiscallcc'
1873/// ::= 'x86_vectorcallcc'
1874/// ::= 'arm_apcscc'
1875/// ::= 'arm_aapcscc'
1876/// ::= 'arm_aapcs_vfpcc'
1877/// ::= 'aarch64_vector_pcs'
1878/// ::= 'msp430_intrcc'
1879/// ::= 'avr_intrcc'
1880/// ::= 'avr_signalcc'
1881/// ::= 'ptx_kernel'
1882/// ::= 'ptx_device'
1883/// ::= 'spir_func'
1884/// ::= 'spir_kernel'
1885/// ::= 'x86_64_sysvcc'
1886/// ::= 'win64cc'
1887/// ::= 'webkit_jscc'
1888/// ::= 'anyregcc'
1889/// ::= 'preserve_mostcc'
1890/// ::= 'preserve_allcc'
1891/// ::= 'ghccc'
1892/// ::= 'swiftcc'
1893/// ::= 'x86_intrcc'
1894/// ::= 'hhvmcc'
1895/// ::= 'hhvm_ccc'
1896/// ::= 'cxx_fast_tlscc'
1897/// ::= 'amdgpu_vs'
1898/// ::= 'amdgpu_ls'
1899/// ::= 'amdgpu_hs'
1900/// ::= 'amdgpu_es'
1901/// ::= 'amdgpu_gs'
1902/// ::= 'amdgpu_ps'
1903/// ::= 'amdgpu_cs'
1904/// ::= 'amdgpu_kernel'
1905/// ::= 'cc' UINT
1906///
1907bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1908 switch (Lex.getKind()) {
1909 default: CC = CallingConv::C; return false;
1910 case lltok::kw_ccc: CC = CallingConv::C; break;
1911 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1912 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1913 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1914 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1915 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1916 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1917 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1918 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1919 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1920 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1921 case lltok::kw_aarch64_vector_pcs:CC = CallingConv::AArch64_VectorCall; break;
1922 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1923 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1924 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1925 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1926 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1927 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1928 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1929 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1930 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1931 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1932 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1933 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1934 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1935 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1936 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1937 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1938 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1939 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1940 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1941 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1942 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1943 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1944 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1945 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1946 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1947 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1948 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1949 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1950 case lltok::kw_cc: {
1951 Lex.Lex();
1952 return ParseUInt32(CC);
1953 }
1954 }
1955
1956 Lex.Lex();
1957 return false;
1958}
1959
1960/// ParseMetadataAttachment
1961/// ::= !dbg !42
1962bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1963 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 1963, __PRETTY_FUNCTION__))
;
1964
1965 std::string Name = Lex.getStrVal();
1966 Kind = M->getMDKindID(Name);
1967 Lex.Lex();
1968
1969 return ParseMDNode(MD);
1970}
1971
1972/// ParseInstructionMetadata
1973/// ::= !dbg !42 (',' !dbg !57)*
1974bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1975 do {
1976 if (Lex.getKind() != lltok::MetadataVar)
1977 return TokError("expected metadata after comma");
1978
1979 unsigned MDK;
1980 MDNode *N;
1981 if (ParseMetadataAttachment(MDK, N))
1982 return true;
1983
1984 Inst.setMetadata(MDK, N);
1985 if (MDK == LLVMContext::MD_tbaa)
1986 InstsWithTBAATag.push_back(&Inst);
1987
1988 // If this is the end of the list, we're done.
1989 } while (EatIfPresent(lltok::comma));
1990 return false;
1991}
1992
1993/// ParseGlobalObjectMetadataAttachment
1994/// ::= !dbg !57
1995bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1996 unsigned MDK;
1997 MDNode *N;
1998 if (ParseMetadataAttachment(MDK, N))
1999 return true;
2000
2001 GO.addMetadata(MDK, *N);
2002 return false;
2003}
2004
2005/// ParseOptionalFunctionMetadata
2006/// ::= (!dbg !57)*
2007bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
2008 while (Lex.getKind() == lltok::MetadataVar)
2009 if (ParseGlobalObjectMetadataAttachment(F))
2010 return true;
2011 return false;
2012}
2013
2014/// ParseOptionalAlignment
2015/// ::= /* empty */
2016/// ::= 'align' 4
2017bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
2018 Alignment = 0;
2019 if (!EatIfPresent(lltok::kw_align))
2020 return false;
2021 LocTy AlignLoc = Lex.getLoc();
2022 if (ParseUInt32(Alignment)) return true;
2023 if (!isPowerOf2_32(Alignment))
2024 return Error(AlignLoc, "alignment is not a power of two");
2025 if (Alignment > Value::MaximumAlignment)
2026 return Error(AlignLoc, "huge alignments are not supported yet");
2027 return false;
2028}
2029
2030/// ParseOptionalDerefAttrBytes
2031/// ::= /* empty */
2032/// ::= AttrKind '(' 4 ')'
2033///
2034/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
2035bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
2036 uint64_t &Bytes) {
2037 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2039, __PRETTY_FUNCTION__))
2038 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2039, __PRETTY_FUNCTION__))
2039 "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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2039, __PRETTY_FUNCTION__))
;
2040
2041 Bytes = 0;
2042 if (!EatIfPresent(AttrKind))
2043 return false;
2044 LocTy ParenLoc = Lex.getLoc();
2045 if (!EatIfPresent(lltok::lparen))
2046 return Error(ParenLoc, "expected '('");
2047 LocTy DerefLoc = Lex.getLoc();
2048 if (ParseUInt64(Bytes)) return true;
2049 ParenLoc = Lex.getLoc();
2050 if (!EatIfPresent(lltok::rparen))
2051 return Error(ParenLoc, "expected ')'");
2052 if (!Bytes)
2053 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
2054 return false;
2055}
2056
2057/// ParseOptionalCommaAlign
2058/// ::=
2059/// ::= ',' align 4
2060///
2061/// This returns with AteExtraComma set to true if it ate an excess comma at the
2062/// end.
2063bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
2064 bool &AteExtraComma) {
2065 AteExtraComma = false;
2066 while (EatIfPresent(lltok::comma)) {
2067 // Metadata at the end is an early exit.
2068 if (Lex.getKind() == lltok::MetadataVar) {
2069 AteExtraComma = true;
2070 return false;
2071 }
2072
2073 if (Lex.getKind() != lltok::kw_align)
2074 return Error(Lex.getLoc(), "expected metadata or 'align'");
2075
2076 if (ParseOptionalAlignment(Alignment)) return true;
2077 }
2078
2079 return false;
2080}
2081
2082/// ParseOptionalCommaAddrSpace
2083/// ::=
2084/// ::= ',' addrspace(1)
2085///
2086/// This returns with AteExtraComma set to true if it ate an excess comma at the
2087/// end.
2088bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
2089 LocTy &Loc,
2090 bool &AteExtraComma) {
2091 AteExtraComma = false;
2092 while (EatIfPresent(lltok::comma)) {
2093 // Metadata at the end is an early exit.
2094 if (Lex.getKind() == lltok::MetadataVar) {
2095 AteExtraComma = true;
2096 return false;
2097 }
2098
2099 Loc = Lex.getLoc();
2100 if (Lex.getKind() != lltok::kw_addrspace)
2101 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
2102
2103 if (ParseOptionalAddrSpace(AddrSpace))
2104 return true;
2105 }
2106
2107 return false;
2108}
2109
2110bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
2111 Optional<unsigned> &HowManyArg) {
2112 Lex.Lex();
2113
2114 auto StartParen = Lex.getLoc();
2115 if (!EatIfPresent(lltok::lparen))
2116 return Error(StartParen, "expected '('");
2117
2118 if (ParseUInt32(BaseSizeArg))
2119 return true;
2120
2121 if (EatIfPresent(lltok::comma)) {
2122 auto HowManyAt = Lex.getLoc();
2123 unsigned HowMany;
2124 if (ParseUInt32(HowMany))
2125 return true;
2126 if (HowMany == BaseSizeArg)
2127 return Error(HowManyAt,
2128 "'allocsize' indices can't refer to the same parameter");
2129 HowManyArg = HowMany;
2130 } else
2131 HowManyArg = None;
2132
2133 auto EndParen = Lex.getLoc();
2134 if (!EatIfPresent(lltok::rparen))
2135 return Error(EndParen, "expected ')'");
2136 return false;
2137}
2138
2139/// ParseScopeAndOrdering
2140/// if isAtomic: ::= SyncScope? AtomicOrdering
2141/// else: ::=
2142///
2143/// This sets Scope and Ordering to the parsed values.
2144bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
2145 AtomicOrdering &Ordering) {
2146 if (!isAtomic)
2147 return false;
2148
2149 return ParseScope(SSID) || ParseOrdering(Ordering);
2150}
2151
2152/// ParseScope
2153/// ::= syncscope("singlethread" | "<target scope>")?
2154///
2155/// This sets synchronization scope ID to the ID of the parsed value.
2156bool LLParser::ParseScope(SyncScope::ID &SSID) {
2157 SSID = SyncScope::System;
2158 if (EatIfPresent(lltok::kw_syncscope)) {
2159 auto StartParenAt = Lex.getLoc();
2160 if (!EatIfPresent(lltok::lparen))
2161 return Error(StartParenAt, "Expected '(' in syncscope");
2162
2163 std::string SSN;
2164 auto SSNAt = Lex.getLoc();
2165 if (ParseStringConstant(SSN))
2166 return Error(SSNAt, "Expected synchronization scope name");
2167
2168 auto EndParenAt = Lex.getLoc();
2169 if (!EatIfPresent(lltok::rparen))
2170 return Error(EndParenAt, "Expected ')' in syncscope");
2171
2172 SSID = Context.getOrInsertSyncScopeID(SSN);
2173 }
2174
2175 return false;
2176}
2177
2178/// ParseOrdering
2179/// ::= AtomicOrdering
2180///
2181/// This sets Ordering to the parsed value.
2182bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
2183 switch (Lex.getKind()) {
2184 default: return TokError("Expected ordering on atomic instruction");
2185 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
2186 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
2187 // Not specified yet:
2188 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
2189 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
2190 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
2191 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
2192 case lltok::kw_seq_cst:
2193 Ordering = AtomicOrdering::SequentiallyConsistent;
2194 break;
2195 }
2196 Lex.Lex();
2197 return false;
2198}
2199
2200/// ParseOptionalStackAlignment
2201/// ::= /* empty */
2202/// ::= 'alignstack' '(' 4 ')'
2203bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2204 Alignment = 0;
2205 if (!EatIfPresent(lltok::kw_alignstack))
2206 return false;
2207 LocTy ParenLoc = Lex.getLoc();
2208 if (!EatIfPresent(lltok::lparen))
2209 return Error(ParenLoc, "expected '('");
2210 LocTy AlignLoc = Lex.getLoc();
2211 if (ParseUInt32(Alignment)) return true;
2212 ParenLoc = Lex.getLoc();
2213 if (!EatIfPresent(lltok::rparen))
2214 return Error(ParenLoc, "expected ')'");
2215 if (!isPowerOf2_32(Alignment))
2216 return Error(AlignLoc, "stack alignment is not a power of two");
2217 return false;
2218}
2219
2220/// ParseIndexList - This parses the index list for an insert/extractvalue
2221/// instruction. This sets AteExtraComma in the case where we eat an extra
2222/// comma at the end of the line and find that it is followed by metadata.
2223/// Clients that don't allow metadata can call the version of this function that
2224/// only takes one argument.
2225///
2226/// ParseIndexList
2227/// ::= (',' uint32)+
2228///
2229bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2230 bool &AteExtraComma) {
2231 AteExtraComma = false;
2232
2233 if (Lex.getKind() != lltok::comma)
2234 return TokError("expected ',' as start of index list");
2235
2236 while (EatIfPresent(lltok::comma)) {
2237 if (Lex.getKind() == lltok::MetadataVar) {
2238 if (Indices.empty()) return TokError("expected index");
2239 AteExtraComma = true;
2240 return false;
2241 }
2242 unsigned Idx = 0;
2243 if (ParseUInt32(Idx)) return true;
2244 Indices.push_back(Idx);
2245 }
2246
2247 return false;
2248}
2249
2250//===----------------------------------------------------------------------===//
2251// Type Parsing.
2252//===----------------------------------------------------------------------===//
2253
2254/// ParseType - Parse a type.
2255bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2256 SMLoc TypeLoc = Lex.getLoc();
2257 switch (Lex.getKind()) {
2258 default:
2259 return TokError(Msg);
2260 case lltok::Type:
2261 // Type ::= 'float' | 'void' (etc)
2262 Result = Lex.getTyVal();
2263 Lex.Lex();
2264 break;
2265 case lltok::lbrace:
2266 // Type ::= StructType
2267 if (ParseAnonStructType(Result, false))
2268 return true;
2269 break;
2270 case lltok::lsquare:
2271 // Type ::= '[' ... ']'
2272 Lex.Lex(); // eat the lsquare.
2273 if (ParseArrayVectorType(Result, false))
2274 return true;
2275 break;
2276 case lltok::less: // Either vector or packed struct.
2277 // Type ::= '<' ... '>'
2278 Lex.Lex();
2279 if (Lex.getKind() == lltok::lbrace) {
2280 if (ParseAnonStructType(Result, true) ||
2281 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2282 return true;
2283 } else if (ParseArrayVectorType(Result, true))
2284 return true;
2285 break;
2286 case lltok::LocalVar: {
2287 // Type ::= %foo
2288 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2289
2290 // If the type hasn't been defined yet, create a forward definition and
2291 // remember where that forward def'n was seen (in case it never is defined).
2292 if (!Entry.first) {
2293 Entry.first = StructType::create(Context, Lex.getStrVal());
2294 Entry.second = Lex.getLoc();
2295 }
2296 Result = Entry.first;
2297 Lex.Lex();
2298 break;
2299 }
2300
2301 case lltok::LocalVarID: {
2302 // Type ::= %4
2303 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2304
2305 // If the type hasn't been defined yet, create a forward definition and
2306 // remember where that forward def'n was seen (in case it never is defined).
2307 if (!Entry.first) {
2308 Entry.first = StructType::create(Context);
2309 Entry.second = Lex.getLoc();
2310 }
2311 Result = Entry.first;
2312 Lex.Lex();
2313 break;
2314 }
2315 }
2316
2317 // Parse the type suffixes.
2318 while (true) {
2319 switch (Lex.getKind()) {
2320 // End of type.
2321 default:
2322 if (!AllowVoid && Result->isVoidTy())
2323 return Error(TypeLoc, "void type only allowed for function results");
2324 return false;
2325
2326 // Type ::= Type '*'
2327 case lltok::star:
2328 if (Result->isLabelTy())
2329 return TokError("basic block pointers are invalid");
2330 if (Result->isVoidTy())
2331 return TokError("pointers to void are invalid - use i8* instead");
2332 if (!PointerType::isValidElementType(Result))
2333 return TokError("pointer to this type is invalid");
2334 Result = PointerType::getUnqual(Result);
2335 Lex.Lex();
2336 break;
2337
2338 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2339 case lltok::kw_addrspace: {
2340 if (Result->isLabelTy())
2341 return TokError("basic block pointers are invalid");
2342 if (Result->isVoidTy())
2343 return TokError("pointers to void are invalid; use i8* instead");
2344 if (!PointerType::isValidElementType(Result))
2345 return TokError("pointer to this type is invalid");
2346 unsigned AddrSpace;
2347 if (ParseOptionalAddrSpace(AddrSpace) ||
2348 ParseToken(lltok::star, "expected '*' in address space"))
2349 return true;
2350
2351 Result = PointerType::get(Result, AddrSpace);
2352 break;
2353 }
2354
2355 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2356 case lltok::lparen:
2357 if (ParseFunctionType(Result))
2358 return true;
2359 break;
2360 }
2361 }
2362}
2363
2364/// ParseParameterList
2365/// ::= '(' ')'
2366/// ::= '(' Arg (',' Arg)* ')'
2367/// Arg
2368/// ::= Type OptionalAttributes Value OptionalAttributes
2369bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2370 PerFunctionState &PFS, bool IsMustTailCall,
2371 bool InVarArgsFunc) {
2372 if (ParseToken(lltok::lparen, "expected '(' in call"))
2373 return true;
2374
2375 while (Lex.getKind() != lltok::rparen) {
2376 // If this isn't the first argument, we need a comma.
2377 if (!ArgList.empty() &&
2378 ParseToken(lltok::comma, "expected ',' in argument list"))
2379 return true;
2380
2381 // Parse an ellipsis if this is a musttail call in a variadic function.
2382 if (Lex.getKind() == lltok::dotdotdot) {
2383 const char *Msg = "unexpected ellipsis in argument list for ";
2384 if (!IsMustTailCall)
2385 return TokError(Twine(Msg) + "non-musttail call");
2386 if (!InVarArgsFunc)
2387 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2388 Lex.Lex(); // Lex the '...', it is purely for readability.
2389 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2390 }
2391
2392 // Parse the argument.
2393 LocTy ArgLoc;
2394 Type *ArgTy = nullptr;
2395 AttrBuilder ArgAttrs;
2396 Value *V;
2397 if (ParseType(ArgTy, ArgLoc))
2398 return true;
2399
2400 if (ArgTy->isMetadataTy()) {
2401 if (ParseMetadataAsValue(V, PFS))
2402 return true;
2403 } else {
2404 // Otherwise, handle normal operands.
2405 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2406 return true;
2407 }
2408 ArgList.push_back(ParamInfo(
2409 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2410 }
2411
2412 if (IsMustTailCall && InVarArgsFunc)
2413 return TokError("expected '...' at end of argument list for musttail call "
2414 "in varargs function");
2415
2416 Lex.Lex(); // Lex the ')'.
2417 return false;
2418}
2419
2420/// ParseOptionalOperandBundles
2421/// ::= /*empty*/
2422/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2423///
2424/// OperandBundle
2425/// ::= bundle-tag '(' ')'
2426/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2427///
2428/// bundle-tag ::= String Constant
2429bool LLParser::ParseOptionalOperandBundles(
2430 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2431 LocTy BeginLoc = Lex.getLoc();
2432 if (!EatIfPresent(lltok::lsquare))
2433 return false;
2434
2435 while (Lex.getKind() != lltok::rsquare) {
2436 // If this isn't the first operand bundle, we need a comma.
2437 if (!BundleList.empty() &&
2438 ParseToken(lltok::comma, "expected ',' in input list"))
2439 return true;
2440
2441 std::string Tag;
2442 if (ParseStringConstant(Tag))
2443 return true;
2444
2445 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2446 return true;
2447
2448 std::vector<Value *> Inputs;
2449 while (Lex.getKind() != lltok::rparen) {
2450 // If this isn't the first input, we need a comma.
2451 if (!Inputs.empty() &&
2452 ParseToken(lltok::comma, "expected ',' in input list"))
2453 return true;
2454
2455 Type *Ty = nullptr;
2456 Value *Input = nullptr;
2457 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2458 return true;
2459 Inputs.push_back(Input);
2460 }
2461
2462 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2463
2464 Lex.Lex(); // Lex the ')'.
2465 }
2466
2467 if (BundleList.empty())
2468 return Error(BeginLoc, "operand bundle set must not be empty");
2469
2470 Lex.Lex(); // Lex the ']'.
2471 return false;
2472}
2473
2474/// ParseArgumentList - Parse the argument list for a function type or function
2475/// prototype.
2476/// ::= '(' ArgTypeListI ')'
2477/// ArgTypeListI
2478/// ::= /*empty*/
2479/// ::= '...'
2480/// ::= ArgTypeList ',' '...'
2481/// ::= ArgType (',' ArgType)*
2482///
2483bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2484 bool &isVarArg){
2485 isVarArg = false;
2486 assert(Lex.getKind() == lltok::lparen)((Lex.getKind() == lltok::lparen) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2486, __PRETTY_FUNCTION__))
;
2487 Lex.Lex(); // eat the (.
2488
2489 if (Lex.getKind() == lltok::rparen) {
2490 // empty
2491 } else if (Lex.getKind() == lltok::dotdotdot) {
2492 isVarArg = true;
2493 Lex.Lex();
2494 } else {
2495 LocTy TypeLoc = Lex.getLoc();
2496 Type *ArgTy = nullptr;
2497 AttrBuilder Attrs;
2498 std::string Name;
2499
2500 if (ParseType(ArgTy) ||
2501 ParseOptionalParamAttrs(Attrs)) return true;
2502
2503 if (ArgTy->isVoidTy())
2504 return Error(TypeLoc, "argument can not have void type");
2505
2506 if (Lex.getKind() == lltok::LocalVar) {
2507 Name = Lex.getStrVal();
2508 Lex.Lex();
2509 }
2510
2511 if (!FunctionType::isValidArgumentType(ArgTy))
2512 return Error(TypeLoc, "invalid type for function argument");
2513
2514 ArgList.emplace_back(TypeLoc, ArgTy,
2515 AttributeSet::get(ArgTy->getContext(), Attrs),
2516 std::move(Name));
2517
2518 while (EatIfPresent(lltok::comma)) {
2519 // Handle ... at end of arg list.
2520 if (EatIfPresent(lltok::dotdotdot)) {
2521 isVarArg = true;
2522 break;
2523 }
2524
2525 // Otherwise must be an argument type.
2526 TypeLoc = Lex.getLoc();
2527 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2528
2529 if (ArgTy->isVoidTy())
2530 return Error(TypeLoc, "argument can not have void type");
2531
2532 if (Lex.getKind() == lltok::LocalVar) {
2533 Name = Lex.getStrVal();
2534 Lex.Lex();
2535 } else {
2536 Name = "";
2537 }
2538
2539 if (!ArgTy->isFirstClassType())
2540 return Error(TypeLoc, "invalid type for function argument");
2541
2542 ArgList.emplace_back(TypeLoc, ArgTy,
2543 AttributeSet::get(ArgTy->getContext(), Attrs),
2544 std::move(Name));
2545 }
2546 }
2547
2548 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2549}
2550
2551/// ParseFunctionType
2552/// ::= Type ArgumentList OptionalAttrs
2553bool LLParser::ParseFunctionType(Type *&Result) {
2554 assert(Lex.getKind() == lltok::lparen)((Lex.getKind() == lltok::lparen) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2554, __PRETTY_FUNCTION__))
;
2555
2556 if (!FunctionType::isValidReturnType(Result))
2557 return TokError("invalid function return type");
2558
2559 SmallVector<ArgInfo, 8> ArgList;
2560 bool isVarArg;
2561 if (ParseArgumentList(ArgList, isVarArg))
2562 return true;
2563
2564 // Reject names on the arguments lists.
2565 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2566 if (!ArgList[i].Name.empty())
2567 return Error(ArgList[i].Loc, "argument name invalid in function type");
2568 if (ArgList[i].Attrs.hasAttributes())
2569 return Error(ArgList[i].Loc,
2570 "argument attributes invalid in function type");
2571 }
2572
2573 SmallVector<Type*, 16> ArgListTy;
2574 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2575 ArgListTy.push_back(ArgList[i].Ty);
2576
2577 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2578 return false;
2579}
2580
2581/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2582/// other structs.
2583bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2584 SmallVector<Type*, 8> Elts;
2585 if (ParseStructBody(Elts)) return true;
2586
2587 Result = StructType::get(Context, Elts, Packed);
2588 return false;
2589}
2590
2591/// ParseStructDefinition - Parse a struct in a 'type' definition.
2592bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2593 std::pair<Type*, LocTy> &Entry,
2594 Type *&ResultTy) {
2595 // If the type was already defined, diagnose the redefinition.
2596 if (Entry.first && !Entry.second.isValid())
2597 return Error(TypeLoc, "redefinition of type");
2598
2599 // If we have opaque, just return without filling in the definition for the
2600 // struct. This counts as a definition as far as the .ll file goes.
2601 if (EatIfPresent(lltok::kw_opaque)) {
2602 // This type is being defined, so clear the location to indicate this.
2603 Entry.second = SMLoc();
2604
2605 // If this type number has never been uttered, create it.
2606 if (!Entry.first)
2607 Entry.first = StructType::create(Context, Name);
2608 ResultTy = Entry.first;
2609 return false;
2610 }
2611
2612 // If the type starts with '<', then it is either a packed struct or a vector.
2613 bool isPacked = EatIfPresent(lltok::less);
2614
2615 // If we don't have a struct, then we have a random type alias, which we
2616 // accept for compatibility with old files. These types are not allowed to be
2617 // forward referenced and not allowed to be recursive.
2618 if (Lex.getKind() != lltok::lbrace) {
2619 if (Entry.first)
2620 return Error(TypeLoc, "forward references to non-struct type");
2621
2622 ResultTy = nullptr;
2623 if (isPacked)
2624 return ParseArrayVectorType(ResultTy, true);
2625 return ParseType(ResultTy);
2626 }
2627
2628 // This type is being defined, so clear the location to indicate this.
2629 Entry.second = SMLoc();
2630
2631 // If this type number has never been uttered, create it.
2632 if (!Entry.first)
2633 Entry.first = StructType::create(Context, Name);
2634
2635 StructType *STy = cast<StructType>(Entry.first);
2636
2637 SmallVector<Type*, 8> Body;
2638 if (ParseStructBody(Body) ||
2639 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2640 return true;
2641
2642 STy->setBody(Body, isPacked);
2643 ResultTy = STy;
2644 return false;
2645}
2646
2647/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2648/// StructType
2649/// ::= '{' '}'
2650/// ::= '{' Type (',' Type)* '}'
2651/// ::= '<' '{' '}' '>'
2652/// ::= '<' '{' Type (',' Type)* '}' '>'
2653bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2654 assert(Lex.getKind() == lltok::lbrace)((Lex.getKind() == lltok::lbrace) ? static_cast<void> (
0) : __assert_fail ("Lex.getKind() == lltok::lbrace", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 2654, __PRETTY_FUNCTION__))
;
2655 Lex.Lex(); // Consume the '{'
2656
2657 // Handle the empty struct.
2658 if (EatIfPresent(lltok::rbrace))
2659 return false;
2660
2661 LocTy EltTyLoc = Lex.getLoc();
2662 Type *Ty = nullptr;
2663 if (ParseType(Ty)) return true;
2664 Body.push_back(Ty);
2665
2666 if (!StructType::isValidElementType(Ty))
2667 return Error(EltTyLoc, "invalid element type for struct");
2668
2669 while (EatIfPresent(lltok::comma)) {
2670 EltTyLoc = Lex.getLoc();
2671 if (ParseType(Ty)) return true;
2672
2673 if (!StructType::isValidElementType(Ty))
2674 return Error(EltTyLoc, "invalid element type for struct");
2675
2676 Body.push_back(Ty);
2677 }
2678
2679 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2680}
2681
2682/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2683/// token has already been consumed.
2684/// Type
2685/// ::= '[' APSINTVAL 'x' Types ']'
2686/// ::= '<' APSINTVAL 'x' Types '>'
2687bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2688 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2689 Lex.getAPSIntVal().getBitWidth() > 64)
2690 return TokError("expected number in address space");
2691
2692 LocTy SizeLoc = Lex.getLoc();
2693 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2694 Lex.Lex();
2695
2696 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2697 return true;
2698
2699 LocTy TypeLoc = Lex.getLoc();
2700 Type *EltTy = nullptr;
2701 if (ParseType(EltTy)) return true;
2702
2703 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2704 "expected end of sequential type"))
2705 return true;
2706
2707 if (isVector) {
2708 if (Size == 0)
2709 return Error(SizeLoc, "zero element vector is illegal");
2710 if ((unsigned)Size != Size)
2711 return Error(SizeLoc, "size too large for vector");
2712 if (!VectorType::isValidElementType(EltTy))
2713 return Error(TypeLoc, "invalid vector element type");
2714 Result = VectorType::get(EltTy, unsigned(Size));
2715 } else {
2716 if (!ArrayType::isValidElementType(EltTy))
2717 return Error(TypeLoc, "invalid array element type");
2718 Result = ArrayType::get(EltTy, Size);
2719 }
2720 return false;
2721}
2722
2723//===----------------------------------------------------------------------===//
2724// Function Semantic Analysis.
2725//===----------------------------------------------------------------------===//
2726
2727LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2728 int functionNumber)
2729 : P(p), F(f), FunctionNumber(functionNumber) {
2730
2731 // Insert unnamed arguments into the NumberedVals list.
2732 for (Argument &A : F.args())
2733 if (!A.hasName())
2734 NumberedVals.push_back(&A);
2735}
2736
2737LLParser::PerFunctionState::~PerFunctionState() {
2738 // If there were any forward referenced non-basicblock values, delete them.
2739
2740 for (const auto &P : ForwardRefVals) {
2741 if (isa<BasicBlock>(P.second.first))
2742 continue;
2743 P.second.first->replaceAllUsesWith(
2744 UndefValue::get(P.second.first->getType()));
2745 P.second.first->deleteValue();
2746 }
2747
2748 for (const auto &P : ForwardRefValIDs) {
2749 if (isa<BasicBlock>(P.second.first))
2750 continue;
2751 P.second.first->replaceAllUsesWith(
2752 UndefValue::get(P.second.first->getType()));
2753 P.second.first->deleteValue();
2754 }
2755}
2756
2757bool LLParser::PerFunctionState::FinishFunction() {
2758 if (!ForwardRefVals.empty())
2759 return P.Error(ForwardRefVals.begin()->second.second,
2760 "use of undefined value '%" + ForwardRefVals.begin()->first +
2761 "'");
2762 if (!ForwardRefValIDs.empty())
2763 return P.Error(ForwardRefValIDs.begin()->second.second,
2764 "use of undefined value '%" +
2765 Twine(ForwardRefValIDs.begin()->first) + "'");
2766 return false;
2767}
2768
2769/// GetVal - Get a value with the specified name or ID, creating a
2770/// forward reference record if needed. This can return null if the value
2771/// exists but does not have the right type.
2772Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2773 LocTy Loc, bool IsCall) {
2774 // Look this name up in the normal function symbol table.
2775 Value *Val = F.getValueSymbolTable()->lookup(Name);
2776
2777 // If this is a forward reference for the value, see if we already created a
2778 // forward ref record.
2779 if (!Val) {
2780 auto I = ForwardRefVals.find(Name);
2781 if (I != ForwardRefVals.end())
2782 Val = I->second.first;
2783 }
2784
2785 // If we have the value in the symbol table or fwd-ref table, return it.
2786 if (Val)
2787 return P.checkValidVariableType(Loc, "%" + Name, Ty, Val, IsCall);
2788
2789 // Don't make placeholders with invalid type.
2790 if (!Ty->isFirstClassType()) {
2791 P.Error(Loc, "invalid use of a non-first-class type");
2792 return nullptr;
2793 }
2794
2795 // Otherwise, create a new forward reference for this value and remember it.
2796 Value *FwdVal;
2797 if (Ty->isLabelTy()) {
2798 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2799 } else {
2800 FwdVal = new Argument(Ty, Name);
2801 }
2802
2803 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2804 return FwdVal;
2805}
2806
2807Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2808 bool IsCall) {
2809 // Look this name up in the normal function symbol table.
2810 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2811
2812 // If this is a forward reference for the value, see if we already created a
2813 // forward ref record.
2814 if (!Val) {
2815 auto I = ForwardRefValIDs.find(ID);
2816 if (I != ForwardRefValIDs.end())
2817 Val = I->second.first;
2818 }
2819
2820 // If we have the value in the symbol table or fwd-ref table, return it.
2821 if (Val)
2822 return P.checkValidVariableType(Loc, "%" + Twine(ID), Ty, Val, IsCall);
2823
2824 if (!Ty->isFirstClassType()) {
2825 P.Error(Loc, "invalid use of a non-first-class type");
2826 return nullptr;
2827 }
2828
2829 // Otherwise, create a new forward reference for this value and remember it.
2830 Value *FwdVal;
2831 if (Ty->isLabelTy()) {
2832 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2833 } else {
2834 FwdVal = new Argument(Ty);
2835 }
2836
2837 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2838 return FwdVal;
2839}
2840
2841/// SetInstName - After an instruction is parsed and inserted into its
2842/// basic block, this installs its name.
2843bool LLParser::PerFunctionState::SetInstName(int NameID,
2844 const std::string &NameStr,
2845 LocTy NameLoc, Instruction *Inst) {
2846 // If this instruction has void type, it cannot have a name or ID specified.
2847 if (Inst->getType()->isVoidTy()) {
2848 if (NameID != -1 || !NameStr.empty())
2849 return P.Error(NameLoc, "instructions returning void cannot have a name");
2850 return false;
2851 }
2852
2853 // If this was a numbered instruction, verify that the instruction is the
2854 // expected value and resolve any forward references.
2855 if (NameStr.empty()) {
2856 // If neither a name nor an ID was specified, just use the next ID.
2857 if (NameID == -1)
2858 NameID = NumberedVals.size();
2859
2860 if (unsigned(NameID) != NumberedVals.size())
2861 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2862 Twine(NumberedVals.size()) + "'");
2863
2864 auto FI = ForwardRefValIDs.find(NameID);
2865 if (FI != ForwardRefValIDs.end()) {
2866 Value *Sentinel = FI->second.first;
2867 if (Sentinel->getType() != Inst->getType())
2868 return P.Error(NameLoc, "instruction forward referenced with type '" +
2869 getTypeString(FI->second.first->getType()) + "'");
2870
2871 Sentinel->replaceAllUsesWith(Inst);
2872 Sentinel->deleteValue();
2873 ForwardRefValIDs.erase(FI);
2874 }
2875
2876 NumberedVals.push_back(Inst);
2877 return false;
2878 }
2879
2880 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2881 auto FI = ForwardRefVals.find(NameStr);
2882 if (FI != ForwardRefVals.end()) {
2883 Value *Sentinel = FI->second.first;
2884 if (Sentinel->getType() != Inst->getType())
2885 return P.Error(NameLoc, "instruction forward referenced with type '" +
2886 getTypeString(FI->second.first->getType()) + "'");
2887
2888 Sentinel->replaceAllUsesWith(Inst);
2889 Sentinel->deleteValue();
2890 ForwardRefVals.erase(FI);
2891 }
2892
2893 // Set the name on the instruction.
2894 Inst->setName(NameStr);
2895
2896 if (Inst->getName() != NameStr)
2897 return P.Error(NameLoc, "multiple definition of local value named '" +
2898 NameStr + "'");
2899 return false;
2900}
2901
2902/// GetBB - Get a basic block with the specified name or ID, creating a
2903/// forward reference record if needed.
2904BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2905 LocTy Loc) {
2906 return dyn_cast_or_null<BasicBlock>(
2907 GetVal(Name, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2908}
2909
2910BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2911 return dyn_cast_or_null<BasicBlock>(
2912 GetVal(ID, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2913}
2914
2915/// DefineBB - Define the specified basic block, which is either named or
2916/// unnamed. If there is an error, this returns null otherwise it returns
2917/// the block being defined.
2918BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2919 LocTy Loc) {
2920 BasicBlock *BB;
2921 if (Name.empty())
2922 BB = GetBB(NumberedVals.size(), Loc);
2923 else
2924 BB = GetBB(Name, Loc);
2925 if (!BB) return nullptr; // Already diagnosed error.
2926
2927 // Move the block to the end of the function. Forward ref'd blocks are
2928 // inserted wherever they happen to be referenced.
2929 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2930
2931 // Remove the block from forward ref sets.
2932 if (Name.empty()) {
2933 ForwardRefValIDs.erase(NumberedVals.size());
2934 NumberedVals.push_back(BB);
2935 } else {
2936 // BB forward references are already in the function symbol table.
2937 ForwardRefVals.erase(Name);
2938 }
2939
2940 return BB;
2941}
2942
2943//===----------------------------------------------------------------------===//
2944// Constants.
2945//===----------------------------------------------------------------------===//
2946
2947/// ParseValID - Parse an abstract value that doesn't necessarily have a
2948/// type implied. For example, if we parse "4" we don't know what integer type
2949/// it has. The value will later be combined with its type and checked for
2950/// sanity. PFS is used to convert function-local operands of metadata (since
2951/// metadata operands are not just parsed here but also converted to values).
2952/// PFS can be null when we are not parsing metadata values inside a function.
2953bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2954 ID.Loc = Lex.getLoc();
2955 switch (Lex.getKind()) {
2956 default: return TokError("expected value token");
2957 case lltok::GlobalID: // @42
2958 ID.UIntVal = Lex.getUIntVal();
2959 ID.Kind = ValID::t_GlobalID;
2960 break;
2961 case lltok::GlobalVar: // @foo
2962 ID.StrVal = Lex.getStrVal();
2963 ID.Kind = ValID::t_GlobalName;
2964 break;
2965 case lltok::LocalVarID: // %42
2966 ID.UIntVal = Lex.getUIntVal();
2967 ID.Kind = ValID::t_LocalID;
2968 break;
2969 case lltok::LocalVar: // %foo
2970 ID.StrVal = Lex.getStrVal();
2971 ID.Kind = ValID::t_LocalName;
2972 break;
2973 case lltok::APSInt:
2974 ID.APSIntVal = Lex.getAPSIntVal();
2975 ID.Kind = ValID::t_APSInt;
2976 break;
2977 case lltok::APFloat:
2978 ID.APFloatVal = Lex.getAPFloatVal();
2979 ID.Kind = ValID::t_APFloat;
2980 break;
2981 case lltok::kw_true:
2982 ID.ConstantVal = ConstantInt::getTrue(Context);
2983 ID.Kind = ValID::t_Constant;
2984 break;
2985 case lltok::kw_false:
2986 ID.ConstantVal = ConstantInt::getFalse(Context);
2987 ID.Kind = ValID::t_Constant;
2988 break;
2989 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2990 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2991 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2992 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2993
2994 case lltok::lbrace: {
2995 // ValID ::= '{' ConstVector '}'
2996 Lex.Lex();
2997 SmallVector<Constant*, 16> Elts;
2998 if (ParseGlobalValueVector(Elts) ||
2999 ParseToken(lltok::rbrace, "expected end of struct constant"))
3000 return true;
3001
3002 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
3003 ID.UIntVal = Elts.size();
3004 memcpy(ID.ConstantStructElts.get(), Elts.data(),
3005 Elts.size() * sizeof(Elts[0]));
3006 ID.Kind = ValID::t_ConstantStruct;
3007 return false;
3008 }
3009 case lltok::less: {
3010 // ValID ::= '<' ConstVector '>' --> Vector.
3011 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
3012 Lex.Lex();
3013 bool isPackedStruct = EatIfPresent(lltok::lbrace);
3014
3015 SmallVector<Constant*, 16> Elts;
3016 LocTy FirstEltLoc = Lex.getLoc();
3017 if (ParseGlobalValueVector(Elts) ||
3018 (isPackedStruct &&
3019 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
3020 ParseToken(lltok::greater, "expected end of constant"))
3021 return true;
3022
3023 if (isPackedStruct) {
3024 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
3025 memcpy(ID.ConstantStructElts.get(), Elts.data(),
3026 Elts.size() * sizeof(Elts[0]));
3027 ID.UIntVal = Elts.size();
3028 ID.Kind = ValID::t_PackedConstantStruct;
3029 return false;
3030 }
3031
3032 if (Elts.empty())
3033 return Error(ID.Loc, "constant vector must not be empty");
3034
3035 if (!Elts[0]->getType()->isIntegerTy() &&
3036 !Elts[0]->getType()->isFloatingPointTy() &&
3037 !Elts[0]->getType()->isPointerTy())
3038 return Error(FirstEltLoc,
3039 "vector elements must have integer, pointer or floating point type");
3040
3041 // Verify that all the vector elements have the same type.
3042 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
3043 if (Elts[i]->getType() != Elts[0]->getType())
3044 return Error(FirstEltLoc,
3045 "vector element #" + Twine(i) +
3046 " is not of type '" + getTypeString(Elts[0]->getType()));
3047
3048 ID.ConstantVal = ConstantVector::get(Elts);
3049 ID.Kind = ValID::t_Constant;
3050 return false;
3051 }
3052 case lltok::lsquare: { // Array Constant
3053 Lex.Lex();
3054 SmallVector<Constant*, 16> Elts;
3055 LocTy FirstEltLoc = Lex.getLoc();
3056 if (ParseGlobalValueVector(Elts) ||
3057 ParseToken(lltok::rsquare, "expected end of array constant"))
3058 return true;
3059
3060 // Handle empty element.
3061 if (Elts.empty()) {
3062 // Use undef instead of an array because it's inconvenient to determine
3063 // the element type at this point, there being no elements to examine.
3064 ID.Kind = ValID::t_EmptyArray;
3065 return false;
3066 }
3067
3068 if (!Elts[0]->getType()->isFirstClassType())
3069 return Error(FirstEltLoc, "invalid array element type: " +
3070 getTypeString(Elts[0]->getType()));
3071
3072 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
3073
3074 // Verify all elements are correct type!
3075 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
3076 if (Elts[i]->getType() != Elts[0]->getType())
3077 return Error(FirstEltLoc,
3078 "array element #" + Twine(i) +
3079 " is not of type '" + getTypeString(Elts[0]->getType()));
3080 }
3081
3082 ID.ConstantVal = ConstantArray::get(ATy, Elts);
3083 ID.Kind = ValID::t_Constant;
3084 return false;
3085 }
3086 case lltok::kw_c: // c "foo"
3087 Lex.Lex();
3088 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
3089 false);
3090 if (ParseToken(lltok::StringConstant, "expected string")) return true;
3091 ID.Kind = ValID::t_Constant;
3092 return false;
3093
3094 case lltok::kw_asm: {
3095 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
3096 // STRINGCONSTANT
3097 bool HasSideEffect, AlignStack, AsmDialect;
3098 Lex.Lex();
3099 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
3100 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
3101 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
3102 ParseStringConstant(ID.StrVal) ||
3103 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
3104 ParseToken(lltok::StringConstant, "expected constraint string"))
3105 return true;
3106 ID.StrVal2 = Lex.getStrVal();
3107 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
3108 (unsigned(AsmDialect)<<2);
3109 ID.Kind = ValID::t_InlineAsm;
3110 return false;
3111 }
3112
3113 case lltok::kw_blockaddress: {
3114 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
3115 Lex.Lex();
3116
3117 ValID Fn, Label;
3118
3119 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
3120 ParseValID(Fn) ||
3121 ParseToken(lltok::comma, "expected comma in block address expression")||
3122 ParseValID(Label) ||
3123 ParseToken(lltok::rparen, "expected ')' in block address expression"))
3124 return true;
3125
3126 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
3127 return Error(Fn.Loc, "expected function name in blockaddress");
3128 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
3129 return Error(Label.Loc, "expected basic block name in blockaddress");
3130
3131 // Try to find the function (but skip it if it's forward-referenced).
3132 GlobalValue *GV = nullptr;
3133 if (Fn.Kind == ValID::t_GlobalID) {
3134 if (Fn.UIntVal < NumberedVals.size())
3135 GV = NumberedVals[Fn.UIntVal];
3136 } else if (!ForwardRefVals.count(Fn.StrVal)) {
3137 GV = M->getNamedValue(Fn.StrVal);
3138 }
3139 Function *F = nullptr;
3140 if (GV) {
3141 // Confirm that it's actually a function with a definition.
3142 if (!isa<Function>(GV))
3143 return Error(Fn.Loc, "expected function name in blockaddress");
3144 F = cast<Function>(GV);
3145 if (F->isDeclaration())
3146 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
3147 }
3148
3149 if (!F) {
3150 // Make a global variable as a placeholder for this reference.
3151 GlobalValue *&FwdRef =
3152 ForwardRefBlockAddresses.insert(std::make_pair(
3153 std::move(Fn),
3154 std::map<ValID, GlobalValue *>()))
3155 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3156 .first->second;
3157 if (!FwdRef)
3158 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3159 GlobalValue::InternalLinkage, nullptr, "");
3160 ID.ConstantVal = FwdRef;
3161 ID.Kind = ValID::t_Constant;
3162 return false;
3163 }
3164
3165 // We found the function; now find the basic block. Don't use PFS, since we
3166 // might be inside a constant expression.
3167 BasicBlock *BB;
3168 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3169 if (Label.Kind == ValID::t_LocalID)
3170 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3171 else
3172 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3173 if (!BB)
3174 return Error(Label.Loc, "referenced value is not a basic block");
3175 } else {
3176 if (Label.Kind == ValID::t_LocalID)
3177 return Error(Label.Loc, "cannot take address of numeric label after "
3178 "the function is defined");
3179 BB = dyn_cast_or_null<BasicBlock>(
3180 F->getValueSymbolTable()->lookup(Label.StrVal));
3181 if (!BB)
3182 return Error(Label.Loc, "referenced value is not a basic block");
3183 }
3184
3185 ID.ConstantVal = BlockAddress::get(F, BB);
3186 ID.Kind = ValID::t_Constant;
3187 return false;
3188 }
3189
3190 case lltok::kw_trunc:
3191 case lltok::kw_zext:
3192 case lltok::kw_sext:
3193 case lltok::kw_fptrunc:
3194 case lltok::kw_fpext:
3195 case lltok::kw_bitcast:
3196 case lltok::kw_addrspacecast:
3197 case lltok::kw_uitofp:
3198 case lltok::kw_sitofp:
3199 case lltok::kw_fptoui:
3200 case lltok::kw_fptosi:
3201 case lltok::kw_inttoptr:
3202 case lltok::kw_ptrtoint: {
3203 unsigned Opc = Lex.getUIntVal();
3204 Type *DestTy = nullptr;
3205 Constant *SrcVal;
3206 Lex.Lex();
3207 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3208 ParseGlobalTypeAndValue(SrcVal) ||
3209 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3210 ParseType(DestTy) ||
3211 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3212 return true;
3213 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3214 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3215 getTypeString(SrcVal->getType()) + "' to '" +
3216 getTypeString(DestTy) + "'");
3217 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3218 SrcVal, DestTy);
3219 ID.Kind = ValID::t_Constant;
3220 return false;
3221 }
3222 case lltok::kw_extractvalue: {
3223 Lex.Lex();
3224 Constant *Val;
3225 SmallVector<unsigned, 4> Indices;
3226 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3227 ParseGlobalTypeAndValue(Val) ||
3228 ParseIndexList(Indices) ||
3229 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3230 return true;
3231
3232 if (!Val->getType()->isAggregateType())
3233 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3234 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3235 return Error(ID.Loc, "invalid indices for extractvalue");
3236 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3237 ID.Kind = ValID::t_Constant;
3238 return false;
3239 }
3240 case lltok::kw_insertvalue: {
3241 Lex.Lex();
3242 Constant *Val0, *Val1;
3243 SmallVector<unsigned, 4> Indices;
3244 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3245 ParseGlobalTypeAndValue(Val0) ||
3246 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3247 ParseGlobalTypeAndValue(Val1) ||
3248 ParseIndexList(Indices) ||
3249 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3250 return true;
3251 if (!Val0->getType()->isAggregateType())
3252 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3253 Type *IndexedType =
3254 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3255 if (!IndexedType)
3256 return Error(ID.Loc, "invalid indices for insertvalue");
3257 if (IndexedType != Val1->getType())
3258 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3259 getTypeString(Val1->getType()) +
3260 "' instead of '" + getTypeString(IndexedType) +
3261 "'");
3262 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3263 ID.Kind = ValID::t_Constant;
3264 return false;
3265 }
3266 case lltok::kw_icmp:
3267 case lltok::kw_fcmp: {
3268 unsigned PredVal, Opc = Lex.getUIntVal();
3269 Constant *Val0, *Val1;
3270 Lex.Lex();
3271 if (ParseCmpPredicate(PredVal, Opc) ||
3272 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3273 ParseGlobalTypeAndValue(Val0) ||
3274 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3275 ParseGlobalTypeAndValue(Val1) ||
3276 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3277 return true;
3278
3279 if (Val0->getType() != Val1->getType())
3280 return Error(ID.Loc, "compare operands must have the same type");
3281
3282 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3283
3284 if (Opc == Instruction::FCmp) {
3285 if (!Val0->getType()->isFPOrFPVectorTy())
3286 return Error(ID.Loc, "fcmp requires floating point operands");
3287 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3288 } else {
3289 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3289, __PRETTY_FUNCTION__))
;
3290 if (!Val0->getType()->isIntOrIntVectorTy() &&
3291 !Val0->getType()->isPtrOrPtrVectorTy())
3292 return Error(ID.Loc, "icmp requires pointer or integer operands");
3293 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3294 }
3295 ID.Kind = ValID::t_Constant;
3296 return false;
3297 }
3298
3299 // Unary Operators.
3300 case lltok::kw_fneg: {
3301 unsigned Opc = Lex.getUIntVal();
3302 Constant *Val;
3303 Lex.Lex();
3304 if (ParseToken(lltok::lparen, "expected '(' in unary constantexpr") ||
3305 ParseGlobalTypeAndValue(Val) ||
3306 ParseToken(lltok::rparen, "expected ')' in unary constantexpr"))
3307 return true;
3308
3309 // Check that the type is valid for the operator.
3310 switch (Opc) {
3311 case Instruction::FNeg:
3312 if (!Val->getType()->isFPOrFPVectorTy())
3313 return Error(ID.Loc, "constexpr requires fp operands");
3314 break;
3315 default: llvm_unreachable("Unknown unary operator!")::llvm::llvm_unreachable_internal("Unknown unary operator!", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3315)
;
3316 }
3317 unsigned Flags = 0;
3318 Constant *C = ConstantExpr::get(Opc, Val, Flags);
3319 ID.ConstantVal = C;
3320 ID.Kind = ValID::t_Constant;
3321 return false;
3322 }
3323 // Binary Operators.
3324 case lltok::kw_add:
3325 case lltok::kw_fadd:
3326 case lltok::kw_sub:
3327 case lltok::kw_fsub:
3328 case lltok::kw_mul:
3329 case lltok::kw_fmul:
3330 case lltok::kw_udiv:
3331 case lltok::kw_sdiv:
3332 case lltok::kw_fdiv:
3333 case lltok::kw_urem:
3334 case lltok::kw_srem:
3335 case lltok::kw_frem:
3336 case lltok::kw_shl:
3337 case lltok::kw_lshr:
3338 case lltok::kw_ashr: {
3339 bool NUW = false;
3340 bool NSW = false;
3341 bool Exact = false;
3342 unsigned Opc = Lex.getUIntVal();
3343 Constant *Val0, *Val1;
3344 Lex.Lex();
3345 LocTy ModifierLoc = Lex.getLoc();
3346 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3347 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3348 if (EatIfPresent(lltok::kw_nuw))
3349 NUW = true;
3350 if (EatIfPresent(lltok::kw_nsw)) {
3351 NSW = true;
3352 if (EatIfPresent(lltok::kw_nuw))
3353 NUW = true;
3354 }
3355 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3356 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3357 if (EatIfPresent(lltok::kw_exact))
3358 Exact = true;
3359 }
3360 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3361 ParseGlobalTypeAndValue(Val0) ||
3362 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3363 ParseGlobalTypeAndValue(Val1) ||
3364 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3365 return true;
3366 if (Val0->getType() != Val1->getType())
3367 return Error(ID.Loc, "operands of constexpr must have same type");
3368 if (!Val0->getType()->isIntOrIntVectorTy()) {
3369 if (NUW)
3370 return Error(ModifierLoc, "nuw only applies to integer operations");
3371 if (NSW)
3372 return Error(ModifierLoc, "nsw only applies to integer operations");
3373 }
3374 // Check that the type is valid for the operator.
3375 switch (Opc) {
3376 case Instruction::Add:
3377 case Instruction::Sub:
3378 case Instruction::Mul:
3379 case Instruction::UDiv:
3380 case Instruction::SDiv:
3381 case Instruction::URem:
3382 case Instruction::SRem:
3383 case Instruction::Shl:
3384 case Instruction::AShr:
3385 case Instruction::LShr:
3386 if (!Val0->getType()->isIntOrIntVectorTy())
3387 return Error(ID.Loc, "constexpr requires integer operands");
3388 break;
3389 case Instruction::FAdd:
3390 case Instruction::FSub:
3391 case Instruction::FMul:
3392 case Instruction::FDiv:
3393 case Instruction::FRem:
3394 if (!Val0->getType()->isFPOrFPVectorTy())
3395 return Error(ID.Loc, "constexpr requires fp operands");
3396 break;
3397 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3397)
;
3398 }
3399 unsigned Flags = 0;
3400 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3401 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3402 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3403 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3404 ID.ConstantVal = C;
3405 ID.Kind = ValID::t_Constant;
3406 return false;
3407 }
3408
3409 // Logical Operations
3410 case lltok::kw_and:
3411 case lltok::kw_or:
3412 case lltok::kw_xor: {
3413 unsigned Opc = Lex.getUIntVal();
3414 Constant *Val0, *Val1;
3415 Lex.Lex();
3416 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3417 ParseGlobalTypeAndValue(Val0) ||
3418 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3419 ParseGlobalTypeAndValue(Val1) ||
3420 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3421 return true;
3422 if (Val0->getType() != Val1->getType())
3423 return Error(ID.Loc, "operands of constexpr must have same type");
3424 if (!Val0->getType()->isIntOrIntVectorTy())
3425 return Error(ID.Loc,
3426 "constexpr requires integer or integer vector operands");
3427 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3428 ID.Kind = ValID::t_Constant;
3429 return false;
3430 }
3431
3432 case lltok::kw_getelementptr:
3433 case lltok::kw_shufflevector:
3434 case lltok::kw_insertelement:
3435 case lltok::kw_extractelement:
3436 case lltok::kw_select: {
3437 unsigned Opc = Lex.getUIntVal();
3438 SmallVector<Constant*, 16> Elts;
3439 bool InBounds = false;
3440 Type *Ty;
3441 Lex.Lex();
3442
3443 if (Opc == Instruction::GetElementPtr)
3444 InBounds = EatIfPresent(lltok::kw_inbounds);
3445
3446 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3447 return true;
3448
3449 LocTy ExplicitTypeLoc = Lex.getLoc();
3450 if (Opc == Instruction::GetElementPtr) {
3451 if (ParseType(Ty) ||
3452 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3453 return true;
3454 }
3455
3456 Optional<unsigned> InRangeOp;
3457 if (ParseGlobalValueVector(
3458 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3459 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3460 return true;
3461
3462 if (Opc == Instruction::GetElementPtr) {
3463 if (Elts.size() == 0 ||
3464 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3465 return Error(ID.Loc, "base of getelementptr must be a pointer");
3466
3467 Type *BaseType = Elts[0]->getType();
3468 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3469 if (Ty != BasePointerType->getElementType())
3470 return Error(
3471 ExplicitTypeLoc,
3472 "explicit pointee type doesn't match operand's pointee type");
3473
3474 unsigned GEPWidth =
3475 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3476
3477 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3478 for (Constant *Val : Indices) {
3479 Type *ValTy = Val->getType();
3480 if (!ValTy->isIntOrIntVectorTy())
3481 return Error(ID.Loc, "getelementptr index must be an integer");
3482 if (ValTy->isVectorTy()) {
3483 unsigned ValNumEl = ValTy->getVectorNumElements();
3484 if (GEPWidth && (ValNumEl != GEPWidth))
3485 return Error(
3486 ID.Loc,
3487 "getelementptr vector index has a wrong number of elements");
3488 // GEPWidth may have been unknown because the base is a scalar,
3489 // but it is known now.
3490 GEPWidth = ValNumEl;
3491 }
3492 }
3493
3494 SmallPtrSet<Type*, 4> Visited;
3495 if (!Indices.empty() && !Ty->isSized(&Visited))
3496 return Error(ID.Loc, "base element of getelementptr must be sized");
3497
3498 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3499 return Error(ID.Loc, "invalid getelementptr indices");
3500
3501 if (InRangeOp) {
3502 if (*InRangeOp == 0)
3503 return Error(ID.Loc,
3504 "inrange keyword may not appear on pointer operand");
3505 --*InRangeOp;
3506 }
3507
3508 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3509 InBounds, InRangeOp);
3510 } else if (Opc == Instruction::Select) {
3511 if (Elts.size() != 3)
3512 return Error(ID.Loc, "expected three operands to select");
3513 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3514 Elts[2]))
3515 return Error(ID.Loc, Reason);
3516 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3517 } else if (Opc == Instruction::ShuffleVector) {
3518 if (Elts.size() != 3)
3519 return Error(ID.Loc, "expected three operands to shufflevector");
3520 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3521 return Error(ID.Loc, "invalid operands to shufflevector");
3522 ID.ConstantVal =
3523 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3524 } else if (Opc == Instruction::ExtractElement) {
3525 if (Elts.size() != 2)
3526 return Error(ID.Loc, "expected two operands to extractelement");
3527 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3528 return Error(ID.Loc, "invalid extractelement operands");
3529 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3530 } else {
3531 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3531, __PRETTY_FUNCTION__))
;
3532 if (Elts.size() != 3)
3533 return Error(ID.Loc, "expected three operands to insertelement");
3534 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3535 return Error(ID.Loc, "invalid insertelement operands");
3536 ID.ConstantVal =
3537 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3538 }
3539
3540 ID.Kind = ValID::t_Constant;
3541 return false;
3542 }
3543 }
3544
3545 Lex.Lex();
3546 return false;
3547}
3548
3549/// ParseGlobalValue - Parse a global value with the specified type.
3550bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3551 C = nullptr;
3552 ValID ID;
3553 Value *V = nullptr;
3554 bool Parsed = ParseValID(ID) ||
3555 ConvertValIDToValue(Ty, ID, V, nullptr, /*IsCall=*/false);
3556 if (V && !(C = dyn_cast<Constant>(V)))
3557 return Error(ID.Loc, "global values must be constants");
3558 return Parsed;
3559}
3560
3561bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3562 Type *Ty = nullptr;
3563 return ParseType(Ty) ||
3564 ParseGlobalValue(Ty, V);
3565}
3566
3567bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3568 C = nullptr;
3569
3570 LocTy KwLoc = Lex.getLoc();
3571 if (!EatIfPresent(lltok::kw_comdat))
3572 return false;
3573
3574 if (EatIfPresent(lltok::lparen)) {
3575 if (Lex.getKind() != lltok::ComdatVar)
3576 return TokError("expected comdat variable");
3577 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3578 Lex.Lex();
3579 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3580 return true;
3581 } else {
3582 if (GlobalName.empty())
3583 return TokError("comdat cannot be unnamed");
3584 C = getComdat(GlobalName, KwLoc);
3585 }
3586
3587 return false;
3588}
3589
3590/// ParseGlobalValueVector
3591/// ::= /*empty*/
3592/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3593bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3594 Optional<unsigned> *InRangeOp) {
3595 // Empty list.
3596 if (Lex.getKind() == lltok::rbrace ||
3597 Lex.getKind() == lltok::rsquare ||
3598 Lex.getKind() == lltok::greater ||
3599 Lex.getKind() == lltok::rparen)
3600 return false;
3601
3602 do {
3603 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3604 *InRangeOp = Elts.size();
3605
3606 Constant *C;
3607 if (ParseGlobalTypeAndValue(C)) return true;
3608 Elts.push_back(C);
3609 } while (EatIfPresent(lltok::comma));
3610
3611 return false;
3612}
3613
3614bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3615 SmallVector<Metadata *, 16> Elts;
3616 if (ParseMDNodeVector(Elts))
3617 return true;
3618
3619 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3620 return false;
3621}
3622
3623/// MDNode:
3624/// ::= !{ ... }
3625/// ::= !7
3626/// ::= !DILocation(...)
3627bool LLParser::ParseMDNode(MDNode *&N) {
3628 if (Lex.getKind() == lltok::MetadataVar)
3629 return ParseSpecializedMDNode(N);
3630
3631 return ParseToken(lltok::exclaim, "expected '!' here") ||
3632 ParseMDNodeTail(N);
3633}
3634
3635bool LLParser::ParseMDNodeTail(MDNode *&N) {
3636 // !{ ... }
3637 if (Lex.getKind() == lltok::lbrace)
3638 return ParseMDTuple(N);
3639
3640 // !42
3641 return ParseMDNodeID(N);
3642}
3643
3644namespace {
3645
3646/// Structure to represent an optional metadata field.
3647template <class FieldTy> struct MDFieldImpl {
3648 typedef MDFieldImpl ImplTy;
3649 FieldTy Val;
3650 bool Seen;
3651
3652 void assign(FieldTy Val) {
3653 Seen = true;
3654 this->Val = std::move(Val);
3655 }
3656
3657 explicit MDFieldImpl(FieldTy Default)
3658 : Val(std::move(Default)), Seen(false) {}
3659};
3660
3661/// Structure to represent an optional metadata field that
3662/// can be of either type (A or B) and encapsulates the
3663/// MD<typeofA>Field and MD<typeofB>Field structs, so not
3664/// to reimplement the specifics for representing each Field.
3665template <class FieldTypeA, class FieldTypeB> struct MDEitherFieldImpl {
3666 typedef MDEitherFieldImpl<FieldTypeA, FieldTypeB> ImplTy;
3667 FieldTypeA A;
3668 FieldTypeB B;
3669 bool Seen;
3670
3671 enum {
3672 IsInvalid = 0,
3673 IsTypeA = 1,
3674 IsTypeB = 2
3675 } WhatIs;
3676
3677 void assign(FieldTypeA A) {
3678 Seen = true;
3679 this->A = std::move(A);
3680 WhatIs = IsTypeA;
3681 }
3682
3683 void assign(FieldTypeB B) {
3684 Seen = true;
3685 this->B = std::move(B);
3686 WhatIs = IsTypeB;
3687 }
3688
3689 explicit MDEitherFieldImpl(FieldTypeA DefaultA, FieldTypeB DefaultB)
3690 : A(std::move(DefaultA)), B(std::move(DefaultB)), Seen(false),
3691 WhatIs(IsInvalid) {}
3692};
3693
3694struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3695 uint64_t Max;
3696
3697 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3698 : ImplTy(Default), Max(Max) {}
3699};
3700
3701struct LineField : public MDUnsignedField {
3702 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3703};
3704
3705struct ColumnField : public MDUnsignedField {
3706 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3707};
3708
3709struct DwarfTagField : public MDUnsignedField {
3710 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3711 DwarfTagField(dwarf::Tag DefaultTag)
3712 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3713};
3714
3715struct DwarfMacinfoTypeField : public MDUnsignedField {
3716 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3717 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3718 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3719};
3720
3721struct DwarfAttEncodingField : public MDUnsignedField {
3722 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3723};
3724
3725struct DwarfVirtualityField : public MDUnsignedField {
3726 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3727};
3728
3729struct DwarfLangField : public MDUnsignedField {
3730 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3731};
3732
3733struct DwarfCCField : public MDUnsignedField {
3734 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3735};
3736
3737struct EmissionKindField : public MDUnsignedField {
3738 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3739};
3740
3741struct NameTableKindField : public MDUnsignedField {
3742 NameTableKindField()
3743 : MDUnsignedField(
3744 0, (unsigned)
3745 DICompileUnit::DebugNameTableKind::LastDebugNameTableKind) {}
3746};
3747
3748struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3749 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3750};
3751
3752struct DISPFlagField : public MDFieldImpl<DISubprogram::DISPFlags> {
3753 DISPFlagField() : MDFieldImpl(DISubprogram::SPFlagZero) {}
3754};
3755
3756struct MDSignedField : public MDFieldImpl<int64_t> {
3757 int64_t Min;
3758 int64_t Max;
3759
3760 MDSignedField(int64_t Default = 0)
3761 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3762 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3763 : ImplTy(Default), Min(Min), Max(Max) {}
3764};
3765
3766struct MDBoolField : public MDFieldImpl<bool> {
3767 MDBoolField(bool Default = false) : ImplTy(Default) {}
3768};
3769
3770struct MDField : public MDFieldImpl<Metadata *> {
3771 bool AllowNull;
3772
3773 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3774};
3775
3776struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3777 MDConstant() : ImplTy(nullptr) {}
3778};
3779
3780struct MDStringField : public MDFieldImpl<MDString *> {
3781 bool AllowEmpty;
3782 MDStringField(bool AllowEmpty = true)
3783 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3784};
3785
3786struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3787 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3788};
3789
3790struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3791 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3792};
3793
3794struct MDSignedOrMDField : MDEitherFieldImpl<MDSignedField, MDField> {
3795 MDSignedOrMDField(int64_t Default = 0, bool AllowNull = true)
3796 : ImplTy(MDSignedField(Default), MDField(AllowNull)) {}
3797
3798 MDSignedOrMDField(int64_t Default, int64_t Min, int64_t Max,
3799 bool AllowNull = true)
3800 : ImplTy(MDSignedField(Default, Min, Max), MDField(AllowNull)) {}
3801
3802 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3803 bool isMDField() const { return WhatIs == IsTypeB; }
3804 int64_t getMDSignedValue() const {
3805 assert(isMDSignedField() && "Wrong field type")((isMDSignedField() && "Wrong field type") ? static_cast
<void> (0) : __assert_fail ("isMDSignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3805, __PRETTY_FUNCTION__))
;
3806 return A.Val;
3807 }
3808 Metadata *getMDFieldValue() const {
3809 assert(isMDField() && "Wrong field type")((isMDField() && "Wrong field type") ? static_cast<
void> (0) : __assert_fail ("isMDField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3809, __PRETTY_FUNCTION__))
;
3810 return B.Val;
3811 }
3812};
3813
3814struct MDSignedOrUnsignedField
3815 : MDEitherFieldImpl<MDSignedField, MDUnsignedField> {
3816 MDSignedOrUnsignedField() : ImplTy(MDSignedField(0), MDUnsignedField(0)) {}
3817
3818 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3819 bool isMDUnsignedField() const { return WhatIs == IsTypeB; }
3820 int64_t getMDSignedValue() const {
3821 assert(isMDSignedField() && "Wrong field type")((isMDSignedField() && "Wrong field type") ? static_cast
<void> (0) : __assert_fail ("isMDSignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3821, __PRETTY_FUNCTION__))
;
3822 return A.Val;
3823 }
3824 uint64_t getMDUnsignedValue() const {
3825 assert(isMDUnsignedField() && "Wrong field type")((isMDUnsignedField() && "Wrong field type") ? static_cast
<void> (0) : __assert_fail ("isMDUnsignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3825, __PRETTY_FUNCTION__))
;
3826 return B.Val;
3827 }
3828};
3829
3830} // end anonymous namespace
3831
3832namespace llvm {
3833
3834template <>
3835bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3836 MDUnsignedField &Result) {
3837 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3838 return TokError("expected unsigned integer");
3839
3840 auto &U = Lex.getAPSIntVal();
3841 if (U.ugt(Result.Max))
3842 return TokError("value for '" + Name + "' too large, limit is " +
3843 Twine(Result.Max));
3844 Result.assign(U.getZExtValue());
3845 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3845, __PRETTY_FUNCTION__))
;
3846 Lex.Lex();
3847 return false;
3848}
3849
3850template <>
3851bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3852 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3853}
3854template <>
3855bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3856 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3857}
3858
3859template <>
3860bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3861 if (Lex.getKind() == lltok::APSInt)
3862 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3863
3864 if (Lex.getKind() != lltok::DwarfTag)
3865 return TokError("expected DWARF tag");
3866
3867 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3868 if (Tag == dwarf::DW_TAG_invalid)
3869 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3870 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3870, __PRETTY_FUNCTION__))
;
3871
3872 Result.assign(Tag);
3873 Lex.Lex();
3874 return false;
3875}
3876
3877template <>
3878bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3879 DwarfMacinfoTypeField &Result) {
3880 if (Lex.getKind() == lltok::APSInt)
3881 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3882
3883 if (Lex.getKind() != lltok::DwarfMacinfo)
3884 return TokError("expected DWARF macinfo type");
3885
3886 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3887 if (Macinfo == dwarf::DW_MACINFO_invalid)
3888 return TokError(
3889 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3890 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3890, __PRETTY_FUNCTION__))
;
3891
3892 Result.assign(Macinfo);
3893 Lex.Lex();
3894 return false;
3895}
3896
3897template <>
3898bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3899 DwarfVirtualityField &Result) {
3900 if (Lex.getKind() == lltok::APSInt)
3901 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3902
3903 if (Lex.getKind() != lltok::DwarfVirtuality)
3904 return TokError("expected DWARF virtuality code");
3905
3906 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3907 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3908 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3909 Lex.getStrVal() + "'");
3910 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3910, __PRETTY_FUNCTION__))
;
3911 Result.assign(Virtuality);
3912 Lex.Lex();
3913 return false;
3914}
3915
3916template <>
3917bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3918 if (Lex.getKind() == lltok::APSInt)
3919 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3920
3921 if (Lex.getKind() != lltok::DwarfLang)
3922 return TokError("expected DWARF language");
3923
3924 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3925 if (!Lang)
3926 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3927 "'");
3928 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3928, __PRETTY_FUNCTION__))
;
3929 Result.assign(Lang);
3930 Lex.Lex();
3931 return false;
3932}
3933
3934template <>
3935bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3936 if (Lex.getKind() == lltok::APSInt)
3937 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3938
3939 if (Lex.getKind() != lltok::DwarfCC)
3940 return TokError("expected DWARF calling convention");
3941
3942 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3943 if (!CC)
3944 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3945 "'");
3946 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3946, __PRETTY_FUNCTION__))
;
3947 Result.assign(CC);
3948 Lex.Lex();
3949 return false;
3950}
3951
3952template <>
3953bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3954 if (Lex.getKind() == lltok::APSInt)
3955 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3956
3957 if (Lex.getKind() != lltok::EmissionKind)
3958 return TokError("expected emission kind");
3959
3960 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3961 if (!Kind)
3962 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3963 "'");
3964 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3964, __PRETTY_FUNCTION__))
;
3965 Result.assign(*Kind);
3966 Lex.Lex();
3967 return false;
3968}
3969
3970template <>
3971bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3972 NameTableKindField &Result) {
3973 if (Lex.getKind() == lltok::APSInt)
3974 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3975
3976 if (Lex.getKind() != lltok::NameTableKind)
3977 return TokError("expected nameTable kind");
3978
3979 auto Kind = DICompileUnit::getNameTableKind(Lex.getStrVal());
3980 if (!Kind)
3981 return TokError("invalid nameTable kind" + Twine(" '") + Lex.getStrVal() +
3982 "'");
3983 assert(((unsigned)*Kind) <= Result.Max && "Expected valid nameTable kind")((((unsigned)*Kind) <= Result.Max && "Expected valid nameTable kind"
) ? static_cast<void> (0) : __assert_fail ("((unsigned)*Kind) <= Result.Max && \"Expected valid nameTable kind\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 3983, __PRETTY_FUNCTION__))
;
3984 Result.assign((unsigned)*Kind);
3985 Lex.Lex();
3986 return false;
3987}
3988
3989template <>
3990bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3991 DwarfAttEncodingField &Result) {
3992 if (Lex.getKind() == lltok::APSInt)
3993 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3994
3995 if (Lex.getKind() != lltok::DwarfAttEncoding)
3996 return TokError("expected DWARF type attribute encoding");
3997
3998 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3999 if (!Encoding)
4000 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
4001 Lex.getStrVal() + "'");
4002 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4002, __PRETTY_FUNCTION__))
;
4003 Result.assign(Encoding);
4004 Lex.Lex();
4005 return false;
4006}
4007
4008/// DIFlagField
4009/// ::= uint32
4010/// ::= DIFlagVector
4011/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
4012template <>
4013bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
4014
4015 // Parser for a single flag.
4016 auto parseFlag = [&](DINode::DIFlags &Val) {
4017 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
4018 uint32_t TempVal = static_cast<uint32_t>(Val);
4019 bool Res = ParseUInt32(TempVal);
4020 Val = static_cast<DINode::DIFlags>(TempVal);
4021 return Res;
4022 }
4023
4024 if (Lex.getKind() != lltok::DIFlag)
4025 return TokError("expected debug info flag");
4026
4027 Val = DINode::getFlag(Lex.getStrVal());
4028 if (!Val)
4029 return TokError(Twine("invalid debug info flag flag '") +
4030 Lex.getStrVal() + "'");
4031 Lex.Lex();
4032 return false;
4033 };
4034
4035 // Parse the flags and combine them together.
4036 DINode::DIFlags Combined = DINode::FlagZero;
4037 do {
4038 DINode::DIFlags Val;
4039 if (parseFlag(Val))
4040 return true;
4041 Combined |= Val;
4042 } while (EatIfPresent(lltok::bar));
4043
4044 Result.assign(Combined);
4045 return false;
4046}
4047
4048/// DISPFlagField
4049/// ::= uint32
4050/// ::= DISPFlagVector
4051/// ::= DISPFlagVector '|' DISPFlag* '|' uint32
4052template <>
4053bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DISPFlagField &Result) {
4054
4055 // Parser for a single flag.
4056 auto parseFlag = [&](DISubprogram::DISPFlags &Val) {
4057 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
7
Assuming the condition is true
8
Taking true branch
4058 uint32_t TempVal = static_cast<uint32_t>(Val);
9
Assigned value is garbage or undefined
4059 bool Res = ParseUInt32(TempVal);
4060 Val = static_cast<DISubprogram::DISPFlags>(TempVal);
4061 return Res;
4062 }
4063
4064 if (Lex.getKind() != lltok::DISPFlag)
4065 return TokError("expected debug info flag");
4066
4067 Val = DISubprogram::getFlag(Lex.getStrVal());
4068 if (!Val)
4069 return TokError(Twine("invalid subprogram debug info flag '") +
4070 Lex.getStrVal() + "'");
4071 Lex.Lex();
4072 return false;
4073 };
4074
4075 // Parse the flags and combine them together.
4076 DISubprogram::DISPFlags Combined = DISubprogram::SPFlagZero;
4077 do {
4078 DISubprogram::DISPFlags Val;
4
'Val' declared without an initial value
4079 if (parseFlag(Val))
5
Passing value via 1st parameter 'Val'
6
Calling 'operator()'
4080 return true;
4081 Combined |= Val;
4082 } while (EatIfPresent(lltok::bar));
4083
4084 Result.assign(Combined);
4085 return false;
4086}
4087
4088template <>
4089bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4090 MDSignedField &Result) {
4091 if (Lex.getKind() != lltok::APSInt)
4092 return TokError("expected signed integer");
4093
4094 auto &S = Lex.getAPSIntVal();
4095 if (S < Result.Min)
4096 return TokError("value for '" + Name + "' too small, limit is " +
4097 Twine(Result.Min));
4098 if (S > Result.Max)
4099 return TokError("value for '" + Name + "' too large, limit is " +
4100 Twine(Result.Max));
4101 Result.assign(S.getExtValue());
4102 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4102, __PRETTY_FUNCTION__))
;
4103 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4103, __PRETTY_FUNCTION__))
;
4104 Lex.Lex();
4105 return false;
4106}
4107
4108template <>
4109bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
4110 switch (Lex.getKind()) {
4111 default:
4112 return TokError("expected 'true' or 'false'");
4113 case lltok::kw_true:
4114 Result.assign(true);
4115 break;
4116 case lltok::kw_false:
4117 Result.assign(false);
4118 break;
4119 }
4120 Lex.Lex();
4121 return false;
4122}
4123
4124template <>
4125bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
4126 if (Lex.getKind() == lltok::kw_null) {
4127 if (!Result.AllowNull)
4128 return TokError("'" + Name + "' cannot be null");
4129 Lex.Lex();
4130 Result.assign(nullptr);
4131 return false;
4132 }
4133
4134 Metadata *MD;
4135 if (ParseMetadata(MD, nullptr))
4136 return true;
4137
4138 Result.assign(MD);
4139 return false;
4140}
4141
4142template <>
4143bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4144 MDSignedOrMDField &Result) {
4145 // Try to parse a signed int.
4146 if (Lex.getKind() == lltok::APSInt) {
4147 MDSignedField Res = Result.A;
4148 if (!ParseMDField(Loc, Name, Res)) {
4149 Result.assign(Res);
4150 return false;
4151 }
4152 return true;
4153 }
4154
4155 // Otherwise, try to parse as an MDField.
4156 MDField Res = Result.B;
4157 if (!ParseMDField(Loc, Name, Res)) {
4158 Result.assign(Res);
4159 return false;
4160 }
4161
4162 return true;
4163}
4164
4165template <>
4166bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4167 MDSignedOrUnsignedField &Result) {
4168 if (Lex.getKind() != lltok::APSInt)
4169 return false;
4170
4171 if (Lex.getAPSIntVal().isSigned()) {
4172 MDSignedField Res = Result.A;
4173 if (ParseMDField(Loc, Name, Res))
4174 return true;
4175 Result.assign(Res);
4176 return false;
4177 }
4178
4179 MDUnsignedField Res = Result.B;
4180 if (ParseMDField(Loc, Name, Res))
4181 return true;
4182 Result.assign(Res);
4183 return false;
4184}
4185
4186template <>
4187bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
4188 LocTy ValueLoc = Lex.getLoc();
4189 std::string S;
4190 if (ParseStringConstant(S))
4191 return true;
4192
4193 if (!Result.AllowEmpty && S.empty())
4194 return Error(ValueLoc, "'" + Name + "' cannot be empty");
4195
4196 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
4197 return false;
4198}
4199
4200template <>
4201bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
4202 SmallVector<Metadata *, 4> MDs;
4203 if (ParseMDNodeVector(MDs))
4204 return true;
4205
4206 Result.assign(std::move(MDs));
4207 return false;
4208}
4209
4210template <>
4211bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4212 ChecksumKindField &Result) {
4213 Optional<DIFile::ChecksumKind> CSKind =
4214 DIFile::getChecksumKind(Lex.getStrVal());
4215
4216 if (Lex.getKind() != lltok::ChecksumKind || !CSKind)
4217 return TokError(
4218 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
4219
4220 Result.assign(*CSKind);
4221 Lex.Lex();
4222 return false;
4223}
4224
4225} // end namespace llvm
4226
4227template <class ParserTy>
4228bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
4229 do {
4230 if (Lex.getKind() != lltok::LabelStr)
4231 return TokError("expected field label here");
4232
4233 if (parseField())
4234 return true;
4235 } while (EatIfPresent(lltok::comma));
4236
4237 return false;
4238}
4239
4240template <class ParserTy>
4241bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
4242 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4242, __PRETTY_FUNCTION__))
;
4243 Lex.Lex();
4244
4245 if (ParseToken(lltok::lparen, "expected '(' here"))
4246 return true;
4247 if (Lex.getKind() != lltok::rparen)
4248 if (ParseMDFieldsImplBody(parseField))
4249 return true;
4250
4251 ClosingLoc = Lex.getLoc();
4252 return ParseToken(lltok::rparen, "expected ')' here");
4253}
4254
4255template <class FieldTy>
4256bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
4257 if (Result.Seen)
1
Assuming the condition is false
2
Taking false branch
4258 return TokError("field '" + Name + "' cannot be specified more than once");
4259
4260 LocTy Loc = Lex.getLoc();
4261 Lex.Lex();
4262 return ParseMDField(Loc, Name, Result);
3
Calling 'LLParser::ParseMDField'
4263}
4264
4265bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
4266 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4266, __PRETTY_FUNCTION__))
;
4267
4268#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
4269 if (Lex.getStrVal() == #CLASS) \
4270 return Parse##CLASS(N, IsDistinct);
4271#include "llvm/IR/Metadata.def"
4272
4273 return TokError("expected metadata type");
4274}
4275
4276#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
4277#define NOP_FIELD(NAME, TYPE, INIT)
4278#define REQUIRE_FIELD(NAME, TYPE, INIT) \
4279 if (!NAME.Seen) \
4280 return Error(ClosingLoc, "missing required field '" #NAME "'");
4281#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
4282 if (Lex.getStrVal() == #NAME) \
4283 return ParseMDField(#NAME, NAME);
4284#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)
\
4285 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
4286 do { \
4287 LocTy ClosingLoc; \
4288 if (ParseMDFieldsImpl([&]() -> bool { \
4289 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
4290 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
4291 }, ClosingLoc)) \
4292 return true; \
4293 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
4294 } while (false)
4295#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
4296 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
4297
4298/// ParseDILocationFields:
4299/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6,
4300/// isImplicitCode: true)
4301bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
4302#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4303 OPTIONAL(line, LineField, ); \
4304 OPTIONAL(column, ColumnField, ); \
4305 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4306 OPTIONAL(inlinedAt, MDField, ); \
4307 OPTIONAL(isImplicitCode, MDBoolField, (false));
4308 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)
;
4309#undef VISIT_MD_FIELDS
4310
4311 Result =
4312 GET_OR_DISTINCT(DILocation, (Context, line.Val, column.Val, scope.Val,(IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val, isImplicitCode.Val) : DILocation
::get (Context, line.Val, column.Val, scope.Val, inlinedAt.Val
, isImplicitCode.Val))
4313 inlinedAt.Val, isImplicitCode.Val))(IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val, isImplicitCode.Val) : DILocation
::get (Context, line.Val, column.Val, scope.Val, inlinedAt.Val
, isImplicitCode.Val))
;
4314 return false;
4315}
4316
4317/// ParseGenericDINode:
4318/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
4319bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
4320#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4321 REQUIRED(tag, DwarfTagField, ); \
4322 OPTIONAL(header, MDStringField, ); \
4323 OPTIONAL(operands, MDFieldList, );
4324 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)
;
4325#undef VISIT_MD_FIELDS
4326
4327 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
4328 (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))
;
4329 return false;
4330}
4331
4332/// ParseDISubrange:
4333/// ::= !DISubrange(count: 30, lowerBound: 2)
4334/// ::= !DISubrange(count: !node, lowerBound: 2)
4335bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
4336#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4337 REQUIRED(count, MDSignedOrMDField, (-1, -1, INT64_MAX(9223372036854775807L), false)); \
4338 OPTIONAL(lowerBound, MDSignedField, );
4339 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)
;
4340#undef VISIT_MD_FIELDS
4341
4342 if (count.isMDSignedField())
4343 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
4344 DISubrange, (Context, count.getMDSignedValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
;
4345 else if (count.isMDField())
4346 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
4347 DISubrange, (Context, count.getMDFieldValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
;
4348 else
4349 return true;
4350
4351 return false;
4352}
4353
4354/// ParseDIEnumerator:
4355/// ::= !DIEnumerator(value: 30, isUnsigned: true, name: "SomeKind")
4356bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
4357#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4358 REQUIRED(name, MDStringField, ); \
4359 REQUIRED(value, MDSignedOrUnsignedField, ); \
4360 OPTIONAL(isUnsigned, MDBoolField, (false));
4361 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)
;
4362#undef VISIT_MD_FIELDS
4363
4364 if (isUnsigned.Val && value.isMDSignedField())
4365 return TokError("unsigned enumerator with negative value");
4366
4367 int64_t Value = value.isMDSignedField()
4368 ? value.getMDSignedValue()
4369 : static_cast<int64_t>(value.getMDUnsignedValue());
4370 Result =
4371 GET_OR_DISTINCT(DIEnumerator, (Context, Value, isUnsigned.Val, name.Val))(IsDistinct ? DIEnumerator::getDistinct (Context, Value, isUnsigned
.Val, name.Val) : DIEnumerator::get (Context, Value, isUnsigned
.Val, name.Val))
;
4372
4373 return false;
4374}
4375
4376/// ParseDIBasicType:
4377/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32,
4378/// encoding: DW_ATE_encoding, flags: 0)
4379bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4380#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4381 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4382 OPTIONAL(name, MDStringField, ); \
4383 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4384 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4385 OPTIONAL(encoding, DwarfAttEncodingField, ); \
4386 OPTIONAL(flags, DIFlagField, );
4387 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)
;
4388#undef VISIT_MD_FIELDS
4389
4390 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, flags.Val) : DIBasicType
::get (Context, tag.Val, name.Val, size.Val, align.Val, encoding
.Val, flags.Val))
4391 align.Val, encoding.Val, flags.Val))(IsDistinct ? DIBasicType::getDistinct (Context, tag.Val, name
.Val, size.Val, align.Val, encoding.Val, flags.Val) : DIBasicType
::get (Context, tag.Val, name.Val, size.Val, align.Val, encoding
.Val, flags.Val))
;
4392 return false;
4393}
4394
4395/// ParseDIDerivedType:
4396/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4397/// line: 7, scope: !1, baseType: !2, size: 32,
4398/// align: 32, offset: 0, flags: 0, extraData: !3,
4399/// dwarfAddressSpace: 3)
4400bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4401#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4402 REQUIRED(tag, DwarfTagField, ); \
4403 OPTIONAL(name, MDStringField, ); \
4404 OPTIONAL(file, MDField, ); \
4405 OPTIONAL(line, LineField, ); \
4406 OPTIONAL(scope, MDField, ); \
4407 REQUIRED(baseType, MDField, ); \
4408 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4409 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4410 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4411 OPTIONAL(flags, DIFlagField, ); \
4412 OPTIONAL(extraData, MDField, ); \
4413 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
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 Optional<unsigned> DWARFAddressSpace;
4418 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4419 DWARFAddressSpace = dwarfAddressSpace.Val;
4420
4421 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))
4422 (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))
4423 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))
4424 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))
4425 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))
;
4426 return false;
4427}
4428
4429bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4430#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4431 REQUIRED(tag, DwarfTagField, ); \
4432 OPTIONAL(name, MDStringField, ); \
4433 OPTIONAL(file, MDField, ); \
4434 OPTIONAL(line, LineField, ); \
4435 OPTIONAL(scope, MDField, ); \
4436 OPTIONAL(baseType, MDField, ); \
4437 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4438 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4439 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4440 OPTIONAL(flags, DIFlagField, ); \
4441 OPTIONAL(elements, MDField, ); \
4442 OPTIONAL(runtimeLang, DwarfLangField, ); \
4443 OPTIONAL(vtableHolder, MDField, ); \
4444 OPTIONAL(templateParams, MDField, ); \
4445 OPTIONAL(identifier, MDStringField, ); \
4446 OPTIONAL(discriminator, MDField, );
4447 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)
;
4448#undef VISIT_MD_FIELDS
4449
4450 // If this has an identifier try to build an ODR type.
4451 if (identifier.Val)
4452 if (auto *CT = DICompositeType::buildODRType(
4453 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4454 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4455 elements.Val, runtimeLang.Val, vtableHolder.Val,
4456 templateParams.Val, discriminator.Val)) {
4457 Result = CT;
4458 return false;
4459 }
4460
4461 // Create a new node, and save it in the context if it belongs in the type
4462 // map.
4463 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, discriminator
.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, discriminator.Val))
4464 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, discriminator
.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, discriminator.Val))
4465 (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, discriminator
.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, discriminator.Val))
4466 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, discriminator
.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, discriminator.Val))
4467 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, discriminator
.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, discriminator.Val))
4468 discriminator.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, discriminator
.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, discriminator.Val))
;
4469 return false;
4470}
4471
4472bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4473#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4474 OPTIONAL(flags, DIFlagField, ); \
4475 OPTIONAL(cc, DwarfCCField, ); \
4476 REQUIRED(types, MDField, );
4477 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)
;
4478#undef VISIT_MD_FIELDS
4479
4480 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4481 (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))
;
4482 return false;
4483}
4484
4485/// ParseDIFileType:
4486/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir",
4487/// checksumkind: CSK_MD5,
4488/// checksum: "000102030405060708090a0b0c0d0e0f",
4489/// source: "source file contents")
4490bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4491 // The default constructed value for checksumkind is required, but will never
4492 // be used, as the parser checks if the field was actually Seen before using
4493 // the Val.
4494#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4495 REQUIRED(filename, MDStringField, ); \
4496 REQUIRED(directory, MDStringField, ); \
4497 OPTIONAL(checksumkind, ChecksumKindField, (DIFile::CSK_MD5)); \
4498 OPTIONAL(checksum, MDStringField, ); \
4499 OPTIONAL(source, MDStringField, );
4500 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)
;
4501#undef VISIT_MD_FIELDS
4502
4503 Optional<DIFile::ChecksumInfo<MDString *>> OptChecksum;
4504 if (checksumkind.Seen && checksum.Seen)
4505 OptChecksum.emplace(checksumkind.Val, checksum.Val);
4506 else if (checksumkind.Seen || checksum.Seen)
4507 return Lex.Error("'checksumkind' and 'checksum' must be provided together");
4508
4509 Optional<MDString *> OptSource;
4510 if (source.Seen)
4511 OptSource = source.Val;
4512 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val,(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
4513 OptChecksum, OptSource))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
;
4514 return false;
4515}
4516
4517/// ParseDICompileUnit:
4518/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4519/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4520/// splitDebugFilename: "abc.debug",
4521/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4522/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4523bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4524 if (!IsDistinct)
4525 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4526
4527#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4528 REQUIRED(language, DwarfLangField, ); \
4529 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4530 OPTIONAL(producer, MDStringField, ); \
4531 OPTIONAL(isOptimized, MDBoolField, ); \
4532 OPTIONAL(flags, MDStringField, ); \
4533 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4534 OPTIONAL(splitDebugFilename, MDStringField, ); \
4535 OPTIONAL(emissionKind, EmissionKindField, ); \
4536 OPTIONAL(enums, MDField, ); \
4537 OPTIONAL(retainedTypes, MDField, ); \
4538 OPTIONAL(globals, MDField, ); \
4539 OPTIONAL(imports, MDField, ); \
4540 OPTIONAL(macros, MDField, ); \
4541 OPTIONAL(dwoId, MDUnsignedField, ); \
4542 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4543 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4544 OPTIONAL(nameTableKind, NameTableKindField, ); \
4545 OPTIONAL(debugBaseAddress, MDBoolField, = false);
4546 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)
;
4547#undef VISIT_MD_FIELDS
4548
4549 Result = DICompileUnit::getDistinct(
4550 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4551 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4552 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4553 splitDebugInlining.Val, debugInfoForProfiling.Val, nameTableKind.Val,
4554 debugBaseAddress.Val);
4555 return false;
4556}
4557
4558/// ParseDISubprogram:
4559/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4560/// file: !1, line: 7, type: !2, isLocal: false,
4561/// isDefinition: true, scopeLine: 8, containingType: !3,
4562/// virtuality: DW_VIRTUALTIY_pure_virtual,
4563/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4564/// spFlags: 10, isOptimized: false, templateParams: !4,
4565/// declaration: !5, retainedNodes: !6, thrownTypes: !7)
4566bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4567 auto Loc = Lex.getLoc();
4568#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4569 OPTIONAL(scope, MDField, ); \
4570 OPTIONAL(name, MDStringField, ); \
4571 OPTIONAL(linkageName, MDStringField, ); \
4572 OPTIONAL(file, MDField, ); \
4573 OPTIONAL(line, LineField, ); \
4574 OPTIONAL(type, MDField, ); \
4575 OPTIONAL(isLocal, MDBoolField, ); \
4576 OPTIONAL(isDefinition, MDBoolField, (true)); \
4577 OPTIONAL(scopeLine, LineField, ); \
4578 OPTIONAL(containingType, MDField, ); \
4579 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4580 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4581 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4582 OPTIONAL(flags, DIFlagField, ); \
4583 OPTIONAL(spFlags, DISPFlagField, ); \
4584 OPTIONAL(isOptimized, MDBoolField, ); \
4585 OPTIONAL(unit, MDField, ); \
4586 OPTIONAL(templateParams, MDField, ); \
4587 OPTIONAL(declaration, MDField, ); \
4588 OPTIONAL(retainedNodes, MDField, ); \
4589 OPTIONAL(thrownTypes, MDField, );
4590 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)
;
4591#undef VISIT_MD_FIELDS
4592
4593 // An explicit spFlags field takes precedence over individual fields in
4594 // older IR versions.
4595 DISubprogram::DISPFlags SPFlags =
4596 spFlags.Seen ? spFlags.Val
4597 : DISubprogram::toSPFlags(isLocal.Val, isDefinition.Val,
4598 isOptimized.Val, virtuality.Val);
4599 if ((SPFlags & DISubprogram::SPFlagDefinition) && !IsDistinct)
4600 return Lex.Error(
4601 Loc,
4602 "missing 'distinct', required for !DISubprogram that is a Definition");
4603 Result = GET_OR_DISTINCT((IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
4604 DISubprogram,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
4605 (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, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
4606 type.Val, scopeLine.Val, containingType.Val, virtualIndex.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
4607 thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
4608 declaration.Val, retainedNodes.Val, thrownTypes.Val))(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, scopeLine
.Val, containingType.Val, virtualIndex.Val, thisAdjustment.Val
, flags.Val, SPFlags, unit.Val, templateParams.Val, declaration
.Val, retainedNodes.Val, thrownTypes.Val) : DISubprogram::get
(Context, scope.Val, name.Val, linkageName.Val, file.Val, line
.Val, type.Val, scopeLine.Val, containingType.Val, virtualIndex
.Val, thisAdjustment.Val, flags.Val, SPFlags, unit.Val, templateParams
.Val, declaration.Val, retainedNodes.Val, thrownTypes.Val))
;
4609 return false;
4610}
4611
4612/// ParseDILexicalBlock:
4613/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4614bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4615#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4616 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4617 OPTIONAL(file, MDField, ); \
4618 OPTIONAL(line, LineField, ); \
4619 OPTIONAL(column, ColumnField, );
4620 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)
;
4621#undef VISIT_MD_FIELDS
4622
4623 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))
4624 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))
;
4625 return false;
4626}
4627
4628/// ParseDILexicalBlockFile:
4629/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4630bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4631#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4632 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4633 OPTIONAL(file, MDField, ); \
4634 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4635 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)
;
4636#undef VISIT_MD_FIELDS
4637
4638 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4639 (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))
;
4640 return false;
4641}
4642
4643/// ParseDINamespace:
4644/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4645bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4646#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4647 REQUIRED(scope, MDField, ); \
4648 OPTIONAL(name, MDStringField, ); \
4649 OPTIONAL(exportSymbols, MDBoolField, );
4650 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)
;
4651#undef VISIT_MD_FIELDS
4652
4653 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4654 (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))
;
4655 return false;
4656}
4657
4658/// ParseDIMacro:
4659/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4660bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4661#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4662 REQUIRED(type, DwarfMacinfoTypeField, ); \
4663 OPTIONAL(line, LineField, ); \
4664 REQUIRED(name, MDStringField, ); \
4665 OPTIONAL(value, MDStringField, );
4666 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)
;
4667#undef VISIT_MD_FIELDS
4668
4669 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))
4670 (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))
;
4671 return false;
4672}
4673
4674/// ParseDIMacroFile:
4675/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4676bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4677#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4678 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4679 OPTIONAL(line, LineField, ); \
4680 REQUIRED(file, MDField, ); \
4681 OPTIONAL(nodes, MDField, );
4682 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)
;
4683#undef VISIT_MD_FIELDS
4684
4685 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))
4686 (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))
;
4687 return false;
4688}
4689
4690/// ParseDIModule:
4691/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4692/// includePath: "/usr/include", isysroot: "/")
4693bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4694#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4695 REQUIRED(scope, MDField, ); \
4696 REQUIRED(name, MDStringField, ); \
4697 OPTIONAL(configMacros, MDStringField, ); \
4698 OPTIONAL(includePath, MDStringField, ); \
4699 OPTIONAL(isysroot, MDStringField, );
4700 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)
;
4701#undef VISIT_MD_FIELDS
4702
4703 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))
4704 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))
;
4705 return false;
4706}
4707
4708/// ParseDITemplateTypeParameter:
4709/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4710bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4711#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4712 OPTIONAL(name, MDStringField, ); \
4713 REQUIRED(type, MDField, );
4714 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)
;
4715#undef VISIT_MD_FIELDS
4716
4717 Result =
4718 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4719 return false;
4720}
4721
4722/// ParseDITemplateValueParameter:
4723/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4724/// name: "V", type: !1, value: i32 7)
4725bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4726#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4727 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4728 OPTIONAL(name, MDStringField, ); \
4729 OPTIONAL(type, MDField, ); \
4730 REQUIRED(value, MDField, );
4731 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)
;
4732#undef VISIT_MD_FIELDS
4733
4734 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))
4735 (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))
;
4736 return false;
4737}
4738
4739/// ParseDIGlobalVariable:
4740/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4741/// file: !1, line: 7, type: !2, isLocal: false,
4742/// isDefinition: true, templateParams: !3,
4743/// declaration: !4, align: 8)
4744bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4745#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4746 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4747 OPTIONAL(scope, MDField, ); \
4748 OPTIONAL(linkageName, MDStringField, ); \
4749 OPTIONAL(file, MDField, ); \
4750 OPTIONAL(line, LineField, ); \
4751 OPTIONAL(type, MDField, ); \
4752 OPTIONAL(isLocal, MDBoolField, ); \
4753 OPTIONAL(isDefinition, MDBoolField, (true)); \
4754 OPTIONAL(templateParams, MDField, ); \
4755 OPTIONAL(declaration, MDField, ); \
4756 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4757 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)
;
4758#undef VISIT_MD_FIELDS
4759
4760 Result =
4761 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, templateParams.Val, align
.Val) : DIGlobalVariable::get (Context, scope.Val, name.Val, linkageName
.Val, file.Val, line.Val, type.Val, isLocal.Val, isDefinition
.Val, declaration.Val, templateParams.Val, align.Val))
4762 (Context, scope.Val, name.Val, linkageName.Val, file.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, templateParams.Val, align
.Val) : DIGlobalVariable::get (Context, scope.Val, name.Val, linkageName
.Val, file.Val, line.Val, type.Val, isLocal.Val, isDefinition
.Val, declaration.Val, templateParams.Val, align.Val))
4763 line.Val, type.Val, isLocal.Val, isDefinition.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, templateParams.Val, align
.Val) : DIGlobalVariable::get (Context, scope.Val, name.Val, linkageName
.Val, file.Val, line.Val, type.Val, isLocal.Val, isDefinition
.Val, declaration.Val, templateParams.Val, align.Val))
4764 declaration.Val, templateParams.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, templateParams.Val, align
.Val) : DIGlobalVariable::get (Context, scope.Val, name.Val, linkageName
.Val, file.Val, line.Val, type.Val, isLocal.Val, isDefinition
.Val, declaration.Val, templateParams.Val, align.Val))
;
4765 return false;
4766}
4767
4768/// ParseDILocalVariable:
4769/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4770/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4771/// align: 8)
4772/// ::= !DILocalVariable(scope: !0, name: "foo",
4773/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4774/// align: 8)
4775bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4776#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4777 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4778 OPTIONAL(name, MDStringField, ); \
4779 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4780 OPTIONAL(file, MDField, ); \
4781 OPTIONAL(line, LineField, ); \
4782 OPTIONAL(type, MDField, ); \
4783 OPTIONAL(flags, DIFlagField, ); \
4784 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4785 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)
;
4786#undef VISIT_MD_FIELDS
4787
4788 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))
4789 (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))
4790 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))
;
4791 return false;
4792}
4793
4794/// ParseDILabel:
4795/// ::= !DILabel(scope: !0, name: "foo", file: !1, line: 7)
4796bool LLParser::ParseDILabel(MDNode *&Result, bool IsDistinct) {
4797#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4798 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4799 REQUIRED(name, MDStringField, ); \
4800 REQUIRED(file, MDField, ); \
4801 REQUIRED(line, LineField, );
4802 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)
;
4803#undef VISIT_MD_FIELDS
4804
4805 Result = GET_OR_DISTINCT(DILabel,(IsDistinct ? DILabel::getDistinct (Context, scope.Val, name.
Val, file.Val, line.Val) : DILabel::get (Context, scope.Val, name
.Val, file.Val, line.Val))
4806 (Context, scope.Val, name.Val, file.Val, line.Val))(IsDistinct ? DILabel::getDistinct (Context, scope.Val, name.
Val, file.Val, line.Val) : DILabel::get (Context, scope.Val, name
.Val, file.Val, line.Val))
;
4807 return false;
4808}
4809
4810/// ParseDIExpression:
4811/// ::= !DIExpression(0, 7, -1)
4812bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4813 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4813, __PRETTY_FUNCTION__))
;
4814 Lex.Lex();
4815
4816 if (ParseToken(lltok::lparen, "expected '(' here"))
4817 return true;
4818
4819 SmallVector<uint64_t, 8> Elements;
4820 if (Lex.getKind() != lltok::rparen)
4821 do {
4822 if (Lex.getKind() == lltok::DwarfOp) {
4823 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4824 Lex.Lex();
4825 Elements.push_back(Op);
4826 continue;
4827 }
4828 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4829 }
4830
4831 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4832 return TokError("expected unsigned integer");
4833
4834 auto &U = Lex.getAPSIntVal();
4835 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4836 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4837 Elements.push_back(U.getZExtValue());
4838 Lex.Lex();
4839 } while (EatIfPresent(lltok::comma));
4840
4841 if (ParseToken(lltok::rparen, "expected ')' here"))
4842 return true;
4843
4844 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4845 return false;
4846}
4847
4848/// ParseDIGlobalVariableExpression:
4849/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4850bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4851 bool IsDistinct) {
4852#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4853 REQUIRED(var, MDField, ); \
4854 REQUIRED(expr, MDField, );
4855 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)
;
4856#undef VISIT_MD_FIELDS
4857
4858 Result =
4859 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4860 return false;
4861}
4862
4863/// ParseDIObjCProperty:
4864/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4865/// getter: "getFoo", attributes: 7, type: !2)
4866bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4867#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4868 OPTIONAL(name, MDStringField, ); \
4869 OPTIONAL(file, MDField, ); \
4870 OPTIONAL(line, LineField, ); \
4871 OPTIONAL(setter, MDStringField, ); \
4872 OPTIONAL(getter, MDStringField, ); \
4873 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4874 OPTIONAL(type, MDField, );
4875 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)
;
4876#undef VISIT_MD_FIELDS
4877
4878 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))
4879 (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))
4880 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))
;
4881 return false;
4882}
4883
4884/// ParseDIImportedEntity:
4885/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4886/// line: 7, name: "foo")
4887bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4888#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4889 REQUIRED(tag, DwarfTagField, ); \
4890 REQUIRED(scope, MDField, ); \
4891 OPTIONAL(entity, MDField, ); \
4892 OPTIONAL(file, MDField, ); \
4893 OPTIONAL(line, LineField, ); \
4894 OPTIONAL(name, MDStringField, );
4895 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)
;
4896#undef VISIT_MD_FIELDS
4897
4898 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))
4899 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))
4900 (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))
;
4901 return false;
4902}
4903
4904#undef PARSE_MD_FIELD
4905#undef NOP_FIELD
4906#undef REQUIRE_FIELD
4907#undef DECLARE_FIELD
4908
4909/// ParseMetadataAsValue
4910/// ::= metadata i32 %local
4911/// ::= metadata i32 @global
4912/// ::= metadata i32 7
4913/// ::= metadata !0
4914/// ::= metadata !{...}
4915/// ::= metadata !"string"
4916bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4917 // Note: the type 'metadata' has already been parsed.
4918 Metadata *MD;
4919 if (ParseMetadata(MD, &PFS))
4920 return true;
4921
4922 V = MetadataAsValue::get(Context, MD);
4923 return false;
4924}
4925
4926/// ParseValueAsMetadata
4927/// ::= i32 %local
4928/// ::= i32 @global
4929/// ::= i32 7
4930bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4931 PerFunctionState *PFS) {
4932 Type *Ty;
4933 LocTy Loc;
4934 if (ParseType(Ty, TypeMsg, Loc))
4935 return true;
4936 if (Ty->isMetadataTy())
4937 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4938
4939 Value *V;
4940 if (ParseValue(Ty, V, PFS))
4941 return true;
4942
4943 MD = ValueAsMetadata::get(V);
4944 return false;
4945}
4946
4947/// ParseMetadata
4948/// ::= i32 %local
4949/// ::= i32 @global
4950/// ::= i32 7
4951/// ::= !42
4952/// ::= !{...}
4953/// ::= !"string"
4954/// ::= !DILocation(...)
4955bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4956 if (Lex.getKind() == lltok::MetadataVar) {
4957 MDNode *N;
4958 if (ParseSpecializedMDNode(N))
4959 return true;
4960 MD = N;
4961 return false;
4962 }
4963
4964 // ValueAsMetadata:
4965 // <type> <value>
4966 if (Lex.getKind() != lltok::exclaim)
4967 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4968
4969 // '!'.
4970 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 4970, __PRETTY_FUNCTION__))
;
4971 Lex.Lex();
4972
4973 // MDString:
4974 // ::= '!' STRINGCONSTANT
4975 if (Lex.getKind() == lltok::StringConstant) {
4976 MDString *S;
4977 if (ParseMDString(S))
4978 return true;
4979 MD = S;
4980 return false;
4981 }
4982
4983 // MDNode:
4984 // !{ ... }
4985 // !7
4986 MDNode *N;
4987 if (ParseMDNodeTail(N))
4988 return true;
4989 MD = N;
4990 return false;
4991}
4992
4993//===----------------------------------------------------------------------===//
4994// Function Parsing.
4995//===----------------------------------------------------------------------===//
4996
4997bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4998 PerFunctionState *PFS, bool IsCall) {
4999 if (Ty->isFunctionTy())
5000 return Error(ID.Loc, "functions are not values, refer to them as pointers");
5001
5002 switch (ID.Kind) {
5003 case ValID::t_LocalID:
5004 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
5005 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, IsCall);
5006 return V == nullptr;
5007 case ValID::t_LocalName:
5008 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
5009 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, IsCall);
5010 return V == nullptr;
5011 case ValID::t_InlineAsm: {
5012 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
5013 return Error(ID.Loc, "invalid type for inline asm constraint string");
5014 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
5015 (ID.UIntVal >> 1) & 1,
5016 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
5017 return false;
5018 }
5019 case ValID::t_GlobalName:
5020 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc, IsCall);
5021 return V == nullptr;
5022 case ValID::t_GlobalID:
5023 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc, IsCall);
5024 return V == nullptr;
5025 case ValID::t_APSInt:
5026 if (!Ty->isIntegerTy())
5027 return Error(ID.Loc, "integer constant must have integer type");
5028 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
5029 V = ConstantInt::get(Context, ID.APSIntVal);
5030 return false;
5031 case ValID::t_APFloat:
5032 if (!Ty->isFloatingPointTy() ||
5033 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
5034 return Error(ID.Loc, "floating point constant invalid for type");
5035
5036 // The lexer has no type info, so builds all half, float, and double FP
5037 // constants as double. Fix this here. Long double does not need this.
5038 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
5039 bool Ignored;
5040 if (Ty->isHalfTy())
5041 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
5042 &Ignored);
5043 else if (Ty->isFloatTy())
5044 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
5045 &Ignored);
5046 }
5047 V = ConstantFP::get(Context, ID.APFloatVal);
5048
5049 if (V->getType() != Ty)
5050 return Error(ID.Loc, "floating point constant does not have type '" +
5051 getTypeString(Ty) + "'");
5052
5053 return false;
5054 case ValID::t_Null:
5055 if (!Ty->isPointerTy())
5056 return Error(ID.Loc, "null must be a pointer type");
5057 V = ConstantPointerNull::get(cast<PointerType>(Ty));
5058 return false;
5059 case ValID::t_Undef:
5060 // FIXME: LabelTy should not be a first-class type.
5061 if (!Ty->isFirstClassType() || Ty->isLabelTy())
5062 return Error(ID.Loc, "invalid type for undef constant");
5063 V = UndefValue::get(Ty);
5064 return false;
5065 case ValID::t_EmptyArray:
5066 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
5067 return Error(ID.Loc, "invalid empty array initializer");
5068 V = UndefValue::get(Ty);
5069 return false;
5070 case ValID::t_Zero:
5071 // FIXME: LabelTy should not be a first-class type.
5072 if (!Ty->isFirstClassType() || Ty->isLabelTy())
5073 return Error(ID.Loc, "invalid type for null constant");
5074 V = Constant::getNullValue(Ty);
5075 return false;
5076 case ValID::t_None:
5077 if (!Ty->isTokenTy())
5078 return Error(ID.Loc, "invalid type for none constant");
5079 V = Constant::getNullValue(Ty);
5080 return false;
5081 case ValID::t_Constant:
5082 if (ID.ConstantVal->getType() != Ty)
5083 return Error(ID.Loc, "constant expression type mismatch");
5084
5085 V = ID.ConstantVal;
5086 return false;
5087 case ValID::t_ConstantStruct:
5088 case ValID::t_PackedConstantStruct:
5089 if (StructType *ST = dyn_cast<StructType>(Ty)) {
5090 if (ST->getNumElements() != ID.UIntVal)
5091 return Error(ID.Loc,
5092 "initializer with struct type has wrong # elements");
5093 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
5094 return Error(ID.Loc, "packed'ness of initializer and type don't match");
5095
5096 // Verify that the elements are compatible with the structtype.
5097 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
5098 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
5099 return Error(ID.Loc, "element " + Twine(i) +
5100 " of struct initializer doesn't match struct element type");
5101
5102 V = ConstantStruct::get(
5103 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
5104 } else
5105 return Error(ID.Loc, "constant expression type mismatch");
5106 return false;
5107 }
5108 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5108)
;
5109}
5110
5111bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
5112 C = nullptr;
5113 ValID ID;
5114 auto Loc = Lex.getLoc();
5115 if (ParseValID(ID, /*PFS=*/nullptr))
5116 return true;
5117 switch (ID.Kind) {
5118 case ValID::t_APSInt:
5119 case ValID::t_APFloat:
5120 case ValID::t_Undef:
5121 case ValID::t_Constant:
5122 case ValID::t_ConstantStruct:
5123 case ValID::t_PackedConstantStruct: {
5124 Value *V;
5125 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr, /*IsCall=*/false))
5126 return true;
5127 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5127, __PRETTY_FUNCTION__))
;
5128 C = cast<Constant>(V);
5129 return false;
5130 }
5131 case ValID::t_Null:
5132 C = Constant::getNullValue(Ty);
5133 return false;
5134 default:
5135 return Error(Loc, "expected a constant value");
5136 }
5137}
5138
5139bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
5140 V = nullptr;
5141 ValID ID;
5142 return ParseValID(ID, PFS) ||
5143 ConvertValIDToValue(Ty, ID, V, PFS, /*IsCall=*/false);
5144}
5145
5146bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
5147 Type *Ty = nullptr;
5148 return ParseType(Ty) ||
5149 ParseValue(Ty, V, PFS);
5150}
5151
5152bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
5153 PerFunctionState &PFS) {
5154 Value *V;
5155 Loc = Lex.getLoc();
5156 if (ParseTypeAndValue(V, PFS)) return true;
5157 if (!isa<BasicBlock>(V))
5158 return Error(Loc, "expected a basic block");
5159 BB = cast<BasicBlock>(V);
5160 return false;
5161}
5162
5163/// FunctionHeader
5164/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
5165/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
5166/// '(' ArgList ')' OptAddrSpace OptFuncAttrs OptSection OptionalAlign
5167/// OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
5168bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
5169 // Parse the linkage.
5170 LocTy LinkageLoc = Lex.getLoc();
5171 unsigned Linkage;
5172 unsigned Visibility;
5173 unsigned DLLStorageClass;
5174 bool DSOLocal;
5175 AttrBuilder RetAttrs;
5176 unsigned CC;
5177 bool HasLinkage;
5178 Type *RetType = nullptr;
5179 LocTy RetTypeLoc = Lex.getLoc();
5180 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
5181 DSOLocal) ||
5182 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5183 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
5184 return true;
5185
5186 // Verify that the linkage is ok.
5187 switch ((GlobalValue::LinkageTypes)Linkage) {
5188 case GlobalValue::ExternalLinkage:
5189 break; // always ok.
5190 case GlobalValue::ExternalWeakLinkage:
5191 if (isDefine)
5192 return Error(LinkageLoc, "invalid linkage for function definition");
5193 break;
5194 case GlobalValue::PrivateLinkage:
5195 case GlobalValue::InternalLinkage:
5196 case GlobalValue::AvailableExternallyLinkage:
5197 case GlobalValue::LinkOnceAnyLinkage:
5198 case GlobalValue::LinkOnceODRLinkage:
5199 case GlobalValue::WeakAnyLinkage:
5200 case GlobalValue::WeakODRLinkage:
5201 if (!isDefine)
5202 return Error(LinkageLoc, "invalid linkage for function declaration");
5203 break;
5204 case GlobalValue::AppendingLinkage:
5205 case GlobalValue::CommonLinkage:
5206 return Error(LinkageLoc, "invalid function linkage type");
5207 }
5208
5209 if (!isValidVisibilityForLinkage(Visibility, Linkage))
5210 return Error(LinkageLoc,
5211 "symbol with local linkage must have default visibility");
5212
5213 if (!FunctionType::isValidReturnType(RetType))
5214 return Error(RetTypeLoc, "invalid function return type");
5215
5216 LocTy NameLoc = Lex.getLoc();
5217
5218 std::string FunctionName;
5219 if (Lex.getKind() == lltok::GlobalVar) {
5220 FunctionName = Lex.getStrVal();
5221 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
5222 unsigned NameID = Lex.getUIntVal();
5223
5224 if (NameID != NumberedVals.size())
5225 return TokError("function expected to be numbered '%" +
5226 Twine(NumberedVals.size()) + "'");
5227 } else {
5228 return TokError("expected function name");
5229 }
5230
5231 Lex.Lex();
5232
5233 if (Lex.getKind() != lltok::lparen)
5234 return TokError("expected '(' in function argument list");
5235
5236 SmallVector<ArgInfo, 8> ArgList;
5237 bool isVarArg;
5238 AttrBuilder FuncAttrs;
5239 std::vector<unsigned> FwdRefAttrGrps;
5240 LocTy BuiltinLoc;
5241 std::string Section;
5242 unsigned Alignment;
5243 std::string GC;
5244 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
5245 unsigned AddrSpace = 0;
5246 Constant *Prefix = nullptr;
5247 Constant *Prologue = nullptr;
5248 Constant *PersonalityFn = nullptr;
5249 Comdat *C;
5250
5251 if (ParseArgumentList(ArgList, isVarArg) ||
5252 ParseOptionalUnnamedAddr(UnnamedAddr) ||
5253 ParseOptionalProgramAddrSpace(AddrSpace) ||
5254 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
5255 BuiltinLoc) ||
5256 (EatIfPresent(lltok::kw_section) &&
5257 ParseStringConstant(Section)) ||
5258 parseOptionalComdat(FunctionName, C) ||
5259 ParseOptionalAlignment(Alignment) ||
5260 (EatIfPresent(lltok::kw_gc) &&
5261 ParseStringConstant(GC)) ||
5262 (EatIfPresent(lltok::kw_prefix) &&
5263 ParseGlobalTypeAndValue(Prefix)) ||
5264 (EatIfPresent(lltok::kw_prologue) &&
5265 ParseGlobalTypeAndValue(Prologue)) ||
5266 (EatIfPresent(lltok::kw_personality) &&
5267 ParseGlobalTypeAndValue(PersonalityFn)))
5268 return true;
5269
5270 if (FuncAttrs.contains(Attribute::Builtin))
5271 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
5272
5273 // If the alignment was parsed as an attribute, move to the alignment field.
5274 if (FuncAttrs.hasAlignmentAttr()) {
5275 Alignment = FuncAttrs.getAlignment();
5276 FuncAttrs.removeAttribute(Attribute::Alignment);
5277 }
5278
5279 // Okay, if we got here, the function is syntactically valid. Convert types
5280 // and do semantic checks.
5281 std::vector<Type*> ParamTypeList;
5282 SmallVector<AttributeSet, 8> Attrs;
5283
5284 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5285 ParamTypeList.push_back(ArgList[i].Ty);
5286 Attrs.push_back(ArgList[i].Attrs);
5287 }
5288
5289 AttributeList PAL =
5290 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
5291 AttributeSet::get(Context, RetAttrs), Attrs);
5292
5293 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
5294 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
5295
5296 FunctionType *FT =
5297 FunctionType::get(RetType, ParamTypeList, isVarArg);
5298 PointerType *PFT = PointerType::get(FT, AddrSpace);
5299
5300 Fn = nullptr;
5301 if (!FunctionName.empty()) {
5302 // If this was a definition of a forward reference, remove the definition
5303 // from the forward reference table and fill in the forward ref.
5304 auto FRVI = ForwardRefVals.find(FunctionName);
5305 if (FRVI != ForwardRefVals.end()) {
5306 Fn = M->getFunction(FunctionName);
5307 if (!Fn)
5308 return Error(FRVI->second.second, "invalid forward reference to "
5309 "function as global value!");
5310 if (Fn->getType() != PFT)
5311 return Error(FRVI->second.second, "invalid forward reference to "
5312 "function '" + FunctionName + "' with wrong type: "
5313 "expected '" + getTypeString(PFT) + "' but was '" +
5314 getTypeString(Fn->getType()) + "'");
5315 ForwardRefVals.erase(FRVI);
5316 } else if ((Fn = M->getFunction(FunctionName))) {
5317 // Reject redefinitions.
5318 return Error(NameLoc, "invalid redefinition of function '" +
5319 FunctionName + "'");
5320 } else if (M->getNamedValue(FunctionName)) {
5321 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
5322 }
5323
5324 } else {
5325 // If this is a definition of a forward referenced function, make sure the
5326 // types agree.
5327 auto I = ForwardRefValIDs.find(NumberedVals.size());
5328 if (I != ForwardRefValIDs.end()) {
5329 Fn = cast<Function>(I->second.first);
5330 if (Fn->getType() != PFT)
5331 return Error(NameLoc, "type of definition and forward reference of '@" +
5332 Twine(NumberedVals.size()) + "' disagree: "
5333 "expected '" + getTypeString(PFT) + "' but was '" +
5334 getTypeString(Fn->getType()) + "'");
5335 ForwardRefValIDs.erase(I);
5336 }
5337 }
5338
5339 if (!Fn)
5340 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, AddrSpace,
5341 FunctionName, M);
5342 else // Move the forward-reference to the correct spot in the module.
5343 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
5344
5345 assert(Fn->getAddressSpace() == AddrSpace && "Created function in wrong AS")((Fn->getAddressSpace() == AddrSpace && "Created function in wrong AS"
) ? static_cast<void> (0) : __assert_fail ("Fn->getAddressSpace() == AddrSpace && \"Created function in wrong AS\""
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5345, __PRETTY_FUNCTION__))
;
5346
5347 if (FunctionName.empty())
5348 NumberedVals.push_back(Fn);
5349
5350 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
5351 maybeSetDSOLocal(DSOLocal, *Fn);
5352 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
5353 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
5354 Fn->setCallingConv(CC);
5355 Fn->setAttributes(PAL);
5356 Fn->setUnnamedAddr(UnnamedAddr);
5357 Fn->setAlignment(Alignment);
5358 Fn->setSection(Section);
5359 Fn->setComdat(C);
5360 Fn->setPersonalityFn(PersonalityFn);
5361 if (!GC.empty()) Fn->setGC(GC);
5362 Fn->setPrefixData(Prefix);
5363 Fn->setPrologueData(Prologue);
5364 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
5365
5366 // Add all of the arguments we parsed to the function.
5367 Function::arg_iterator ArgIt = Fn->arg_begin();
5368 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
5369 // If the argument has a name, insert it into the argument symbol table.
5370 if (ArgList[i].Name.empty()) continue;
5371
5372 // Set the name, if it conflicted, it will be auto-renamed.
5373 ArgIt->setName(ArgList[i].Name);
5374
5375 if (ArgIt->getName() != ArgList[i].Name)
5376 return Error(ArgList[i].Loc, "redefinition of argument '%" +
5377 ArgList[i].Name + "'");
5378 }
5379
5380 if (isDefine)
5381 return false;
5382
5383 // Check the declaration has no block address forward references.
5384 ValID ID;
5385 if (FunctionName.empty()) {
5386 ID.Kind = ValID::t_GlobalID;
5387 ID.UIntVal = NumberedVals.size() - 1;
5388 } else {
5389 ID.Kind = ValID::t_GlobalName;
5390 ID.StrVal = FunctionName;
5391 }
5392 auto Blocks = ForwardRefBlockAddresses.find(ID);
5393 if (Blocks != ForwardRefBlockAddresses.end())
5394 return Error(Blocks->first.Loc,
5395 "cannot take blockaddress inside a declaration");
5396 return false;
5397}
5398
5399bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
5400 ValID ID;
5401 if (FunctionNumber == -1) {
5402 ID.Kind = ValID::t_GlobalName;
5403 ID.StrVal = F.getName();
5404 } else {
5405 ID.Kind = ValID::t_GlobalID;
5406 ID.UIntVal = FunctionNumber;
5407 }
5408
5409 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
5410 if (Blocks == P.ForwardRefBlockAddresses.end())
5411 return false;
5412
5413 for (const auto &I : Blocks->second) {
5414 const ValID &BBID = I.first;
5415 GlobalValue *GV = I.second;
5416
5417 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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5418, __PRETTY_FUNCTION__))
5418 "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-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5418, __PRETTY_FUNCTION__))
;
5419 BasicBlock *BB;
5420 if (BBID.Kind == ValID::t_LocalName)
5421 BB = GetBB(BBID.StrVal, BBID.Loc);
5422 else
5423 BB = GetBB(BBID.UIntVal, BBID.Loc);
5424 if (!BB)
5425 return P.Error(BBID.Loc, "referenced value is not a basic block");
5426
5427 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
5428 GV->eraseFromParent();
5429 }
5430
5431 P.ForwardRefBlockAddresses.erase(Blocks);
5432 return false;
5433}
5434
5435/// ParseFunctionBody
5436/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5437bool LLParser::ParseFunctionBody(Function &Fn) {
5438 if (Lex.getKind() != lltok::lbrace)
5439 return TokError("expected '{' in function body");
5440 Lex.Lex(); // eat the {.
5441
5442 int FunctionNumber = -1;
5443 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5444
5445 PerFunctionState PFS(*this, Fn, FunctionNumber);
5446
5447 // Resolve block addresses and allow basic blocks to be forward-declared
5448 // within this function.
5449 if (PFS.resolveForwardRefBlockAddresses())
5450 return true;
5451 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5452
5453 // We need at least one basic block.
5454 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5455 return TokError("function body requires at least one basic block");
5456
5457 while (Lex.getKind() != lltok::rbrace &&
5458 Lex.getKind() != lltok::kw_uselistorder)
5459 if (ParseBasicBlock(PFS)) return true;
5460
5461 while (Lex.getKind() != lltok::rbrace)
5462 if (ParseUseListOrder(&PFS))
5463 return true;
5464
5465 // Eat the }.
5466 Lex.Lex();
5467
5468 // Verify function is ok.
5469 return PFS.FinishFunction();
5470}
5471
5472/// ParseBasicBlock
5473/// ::= LabelStr? Instruction*
5474bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5475 // If this basic block starts out with a name, remember it.
5476 std::string Name;
5477 LocTy NameLoc = Lex.getLoc();
5478 if (Lex.getKind() == lltok::LabelStr) {
5479 Name = Lex.getStrVal();
5480 Lex.Lex();
5481 }
5482
5483 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5484 if (!BB)
5485 return Error(NameLoc,
5486 "unable to create block named '" + Name + "'");
5487
5488 std::string NameStr;
5489
5490 // Parse the instructions in this block until we get a terminator.
5491 Instruction *Inst;
5492 do {
5493 // This instruction may have three possibilities for a name: a) none
5494 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5495 LocTy NameLoc = Lex.getLoc();
5496 int NameID = -1;
5497 NameStr = "";
5498
5499 if (Lex.getKind() == lltok::LocalVarID) {
5500 NameID = Lex.getUIntVal();
5501 Lex.Lex();
5502 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5503 return true;
5504 } else if (Lex.getKind() == lltok::LocalVar) {
5505 NameStr = Lex.getStrVal();
5506 Lex.Lex();
5507 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5508 return true;
5509 }
5510
5511 switch (ParseInstruction(Inst, BB, PFS)) {
5512 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-8~svn349319/lib/AsmParser/LLParser.cpp"
, 5512)
;
5513 case InstError: return true;
5514 case InstNormal:
5515 BB->getInstList().push_back(Inst);
5516
5517 // With a normal result, we check to see if the instruction is followed by
5518 // a comma and metadata.
5519 if (EatIfPresent(lltok::comma))
5520 if (ParseInstructionMetadata(*Inst))
5521 return true;
5522 break;
5523 case InstExtraComma:
5524 BB->getInstList().push_back(Inst);
5525
5526 // If the instruction parser ate an extra comma at the end of it, it
5527 // *must* be followed by metadata.
5528 if (ParseInstructionMetadata(*Inst))
5529 return true;
5530 break;
5531 }
5532
5533 // Set the name on the instruction.
5534 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5535 } while (!Inst->isTerminator());
5536
5537 return false;
5538}
5539
5540//===----------------------------------------------------------------------===//
5541// Instruction Parsing.
5542//===----------------------------------------------------------------------===//
5543
5544/// ParseInstruction - Parse one of the many different instructions.
5545///
5546int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5547 PerFunctionState &PFS) {
5548 lltok::Kind Token = Lex.getKind();
5549 if (Token == lltok::Eof)
5550 return TokError("found end of file when expecting more instructions");
5551 LocTy Loc = Lex.getLoc();
5552 unsigned KeywordVal = Lex.getUIntVal();
5553 Lex.Lex(); // Eat the keyword.
5554
5555 switch (Token) {
5556 default: return Error(Loc, "expected instruction opcode");
5557 // Terminator Instructions.
5558 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5559 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5560 case lltok::kw_br: return ParseBr(Inst, PFS);
5561 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5562 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5563 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5564 case lltok::kw_resume: return ParseResume(Inst, PFS);
5565 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5566 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5567 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5568 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5569 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5570 // Unary Operators.
5571 case lltok::kw_fneg: {
5572 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5573 int Res = ParseUnaryOp(Inst, PFS, KeywordVal, 2);
5574 if (Res != 0)
5575 return Res;
5576 if (FMF.any())
5577 Inst->setFastMathFlags(FMF);
5578 return false;
5579 }
5580 // Binary Operators.
5581 case lltok::kw_add:
5582 case lltok::kw_sub:
5583 case lltok::kw_mul:
5584 case lltok::kw_shl: {
5585 bool NUW = EatIfPresent(lltok::kw_nuw);
5586 bool NSW = EatIfPresent(lltok::kw_nsw);
5587 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5588
5589 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5590
5591 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5592 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5593 return false;
5594 }
5595 case lltok::kw_fadd:
5596 case lltok::kw_fsub:
5597 case lltok::kw_fmul:
5598 case lltok::kw_fdiv:
5599 case lltok::kw_frem: {
5600 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5601 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5602 if (Res != 0)
5603 return Res;
5604 if (FMF.any())
5605 Inst->setFastMathFlags(FMF);
5606 return 0;
5607 }
5608
5609 case lltok::kw_sdiv:
5610 case lltok::kw_udiv:
5611 case lltok::kw_lshr:
5612 case lltok::kw_ashr: {
5613 bool Exact = EatIfPresent(lltok::kw_exact);
5614
5615 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5616 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5617 return false;
5618 }
5619
5620 case lltok::kw_urem:
5621 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5622 case lltok::kw_and:
5623 case lltok::kw_or:
5624 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5625 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5626 case lltok::kw_fcmp: {
5627 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5628 int Res = ParseCompare(Inst, PFS, KeywordVal);
5629 if (Res != 0)
5630 return Res;
5631 if (FMF.any())
5632 Inst->setFastMathFlags(FMF);
5633 return 0;
5634 }
5635
5636 // Casts.
5637 case lltok::kw_trunc:
5638 case lltok::kw_zext:
5639 case lltok::kw_sext:
5640 case lltok::kw_fptrunc:
5641 case lltok::kw_fpext:
5642 case lltok::kw_bitcast:
5643 case lltok::kw_addrspacecast:
5644 case lltok::kw_uitofp:
5645 case lltok::kw_sitofp:
5646 case lltok::kw_fptoui:
5647 case lltok::kw_fptosi:
5648 case lltok::kw_inttoptr:
5649 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5650 // Other.
5651 case lltok::kw_select: return ParseSelect(Inst, PFS);
5652 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5653 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5654 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5655 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5656 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5657 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5658 // Call.
5659 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5660 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5661 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5662 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5663 // Memory.
5664 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5665 case lltok::kw_load: return ParseLoad(Inst, PFS);
5666 case lltok::kw_store: return ParseStore(Inst, PFS);
5667 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5668 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5669 case lltok::kw_fence: return ParseFence(Inst, PFS);
5670 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5671 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5672 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5673 }
5674}
5675
5676/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5677bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5678 if (Opc == Instruction::FCmp) {
5679 switch (Lex.getKind()) {
5680 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5681 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5682 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5683 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5684 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5685 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5686 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5687 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5688 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5689 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5690 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5691 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5692 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5693 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5694 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5695 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5696 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5697 }
5698 } else {
5699 switch (Lex.getKind()) {
5700 default: return TokError("expected icmp predicate (e.g. 'eq')");
5701 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5702 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5703 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5704 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5705 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5706 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5707 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5708 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5709 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5710 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5711 }
5712 }
5713 Lex.Lex();
5714 return false;
5715}
5716
5717//===----------------------------------------------------------------------===//
5718// Terminator Instructions.
5719//===----------------------------------------------------------------------===//
5720
5721/// ParseRet - Parse a return instruction.
5722/// ::= 'ret' void (',' !dbg, !1)*
5723/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5724bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5725 PerFunctionState &PFS) {
5726 SMLoc TypeLoc = Lex.getLoc();
5727 Type *Ty = nullptr;
5728 if (ParseType(Ty, true /*void allowed*/)) return true;
5729
5730 Type *ResType = PFS.getFunction().getReturnType();
5731
5732 if (Ty->isVoidTy()) {
5733 if (!ResType->isVoidTy())
5734 return Error(TypeLoc, "value doesn't match function result type '" +
5735 getTypeString(ResType) + "'");
5736
5737 Inst = ReturnInst::Create(Context);
5738 return false;
5739 }
5740
5741 Value *RV;
5742 if (ParseValue(Ty, RV, PFS)) return true;
5743
5744 if (ResType != RV->getType())
5745 return Error(TypeLoc, "value doesn't match function result type '" +
5746 getTypeString(ResType) + "'");
5747
5748 Inst = ReturnInst::Create(Context, RV);
5749 return false;
5750}
5751
5752/// ParseBr
5753/// ::= 'br' TypeAndValue
5754/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5755bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5756 LocTy Loc, Loc2;
5757 Value *Op0;
5758 BasicBlock *Op1, *Op2;
5759 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5760
5761 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5762 Inst = BranchInst::Create(BB);
5763 return false;
5764 }
5765
5766 if (Op0->getType() != Type::getInt1Ty(Context))
5767 return Error(Loc, "branch condition must have 'i1' type");
5768
5769 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5770 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5771 ParseToken(lltok::comma, "expected ',' after true destination") ||
5772 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5773 return true;
5774
5775 Inst = BranchInst::Create(Op1, Op2, Op0);
5776 return false;
5777}
5778
5779/// ParseSwitch
5780/// Instruction
5781/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5782/// JumpTable
5783/// ::= (TypeAndValue ',' TypeAndValue)*
5784bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5785 LocTy CondLoc, BBLoc;
5786 Value *Cond;
5787 BasicBlock *DefaultBB;
5788 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5789 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5790 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5791 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5792 return true;
5793
5794 if (!Cond->getType()->isIntegerTy())
5795 return Error(CondLoc, "switch condition must have integer type");
5796
5797 // Parse the jump table pairs.
5798 SmallPtrSet<Value*, 32> SeenCases;
5799 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5800 while (Lex.getKind() != lltok::rsquare) {
5801 Value *Constant;
5802 BasicBlock *DestBB;
5803
5804 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5805 ParseToken(lltok::comma, "expected ',' after case value") ||
5806 ParseTypeAndBasicBlock(DestBB, PFS))
5807 return true;
5808
5809 if (!SeenCases.insert(Constant).second)
5810 return Error(CondLoc, "duplicate case value in switch");
5811 if (!isa<ConstantInt>(Constant))
5812 return Error(CondLoc, "case value is not a constant integer");
5813
5814 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5815 }
5816
5817 Lex.Lex(); // Eat the ']'.
5818
5819 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5820 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5821 SI->addCase(Table[i].first, Table[i].second);
5822 Inst = SI;
5823 return false;
5824}
5825
5826/// ParseIndirectBr
5827/// Instruction
5828/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5829bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5830 LocTy AddrLoc;
5831 Value *Address;
5832 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5833 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5834 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5835 return true;
5836
5837 if (!Address->getType()->isPointerTy())
5838 return Error(AddrLoc, "indirectbr address must have pointer type");
5839
5840 // Parse the destination list.
5841 SmallVector<BasicBlock*, 16> DestList;
5842
5843 if (Lex.getKind() != lltok::rsquare) {