Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 491, column 5
Called C++ object pointer is uninitialized

Annotated Source Code

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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-eagerly-assume -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-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn338205/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/include -internal-externc-isystem /usr/lib/gcc/x86_64-linux-gnu/8/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-class-memaccess -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/lib/AsmParser -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-07-29-043837-17923-1 -x c++ /build/llvm-toolchain-snapshot-7~svn338205/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())
1
Assuming the condition is false
2
Taking false branch
70 return Error(
71 Lex.getLoc(),
72 "Can't read textual IR with a Context that discards named Values");
73
74 return ParseTopLevelEntities() || ValidateEndOfModule() ||
3
Calling 'LLParser::ParseTopLevelEntities'
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-7~svn338205/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")(static_cast <bool> (MD && "UpgradeInstWithTBAATag should have a TBAA tag"
) ? void (0) : __assert_fail ("MD && \"UpgradeInstWithTBAATag should have a TBAA tag\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 221, __extension__ __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) {
4
Assuming the condition is false
5
Taking false branch
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) {
6
Loop condition is true. Entering loop body
312 switch (Lex.getKind()) {
7
Control jumps to 'case kw_declare:' at line 315
313 default: return TokError("expected top-level entity");
314 case lltok::Eof: return false;
315 case lltok::kw_declare: if (ParseDeclare()) return true; break;
8
Calling 'LLParser::ParseDeclare'
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)(static_cast <bool> (Lex.getKind() == lltok::kw_module)
? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_module"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 348, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::kw_target)
? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_target"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 363, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::kw_source_filename
) ? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_source_filename"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 388, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::kw_deplibs
) ? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_deplibs"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 403, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::kw_declare
) ? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_declare"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 475, __extension__ __PRETTY_FUNCTION__))
;
476 Lex.Lex();
477
478 std::vector<std::pair<unsigned, MDNode *>> MDs;
479 while (Lex.getKind() == lltok::MetadataVar) {
9
Assuming the condition is false
10
Loop condition is false. Execution continues on line 487
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;
11
'F' declared without an initial value
488 if (ParseFunctionHeader(F, false))
12
Calling 'LLParser::ParseFunctionHeader'
22
Returning from 'LLParser::ParseFunctionHeader'
23
Assuming the condition is false
24
Taking false branch
489 return true;
490 for (auto &MD : MDs)
491 F->addMetadata(MD.first, *MD.second);
25
Called C++ object pointer is uninitialized
492 return false;
493}
494
495/// toplevelentity
496/// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
497bool LLParser::ParseDefine() {
498 assert(Lex.getKind() == lltok::kw_define)(static_cast <bool> (Lex.getKind() == lltok::kw_define)
? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_define"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 498, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::GlobalVar)
? void (0) : __assert_fail ("Lex.getKind() == lltok::GlobalVar"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 583, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::ComdatVar)
? void (0) : __assert_fail ("Lex.getKind() == lltok::ComdatVar"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 608, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::MetadataVar
) ? void (0) : __assert_fail ("Lex.getKind() == lltok::MetadataVar"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 693, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::exclaim) ?
void (0) : __assert_fail ("Lex.getKind() == lltok::exclaim",
"/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 726, __extension__ __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")(static_cast <bool> (NumberedMetadata[MetadataID] == Init
&& "Tracking VH didn't work") ? void (0) : __assert_fail
("NumberedMetadata[MetadataID] == Init && \"Tracking VH didn't work\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 753, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::SummaryID)
? void (0) : __assert_fail ("Lex.getKind() == lltok::SummaryID"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 802, __extension__ __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-7~svn338205/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!")(static_cast <bool> (GA->getName() == Name &&
"Should not be a name conflict!") ? void (0) : __assert_fail
("GA->getName() == Name && \"Should not be a name conflict!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 973, __extension__ __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)(static_cast <bool> (Lex.getKind() == lltok::kw_attributes
) ? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_attributes"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 1121, __extension__ __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_strictfp: B.addAttribute(Attribute::StrictFP); break;
1280 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1281 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1282
1283 // Error handling.
1284 case lltok::kw_inreg:
1285 case lltok::kw_signext:
1286 case lltok::kw_zeroext:
1287 HaveError |=
1288 Error(Lex.getLoc(),
1289 "invalid use of attribute on a function");
1290 break;
1291 case lltok::kw_byval:
1292 case lltok::kw_dereferenceable:
1293 case lltok::kw_dereferenceable_or_null:
1294 case lltok::kw_inalloca:
1295 case lltok::kw_nest:
1296 case lltok::kw_noalias:
1297 case lltok::kw_nocapture:
1298 case lltok::kw_nonnull:
1299 case lltok::kw_returned:
1300 case lltok::kw_sret:
1301 case lltok::kw_swifterror:
1302 case lltok::kw_swiftself:
1303 HaveError |=
1304 Error(Lex.getLoc(),
1305 "invalid use of parameter-only attribute on a function");
1306 break;
1307 }
1308
1309 Lex.Lex();
1310 }
1311}
1312
1313//===----------------------------------------------------------------------===//
1314// GlobalValue Reference/Resolution Routines.
1315//===----------------------------------------------------------------------===//
1316
1317static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1318 const std::string &Name) {
1319 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1320 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1321 else
1322 return new GlobalVariable(*M, PTy->getElementType(), false,
1323 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1324 nullptr, GlobalVariable::NotThreadLocal,
1325 PTy->getAddressSpace());
1326}
1327
1328/// GetGlobalVal - Get a value with the specified name or ID, creating a
1329/// forward reference record if needed. This can return null if the value
1330/// exists but does not have the right type.
1331GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1332 LocTy Loc) {
1333 PointerType *PTy = dyn_cast<PointerType>(Ty);
1334 if (!PTy) {
1335 Error(Loc, "global variable reference must have pointer type");
1336 return nullptr;
1337 }
1338
1339 // Look this name up in the normal function symbol table.
1340 GlobalValue *Val =
1341 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1342
1343 // If this is a forward reference for the value, see if we already created a
1344 // forward ref record.
1345 if (!Val) {
1346 auto I = ForwardRefVals.find(Name);
1347 if (I != ForwardRefVals.end())
1348 Val = I->second.first;
1349 }
1350
1351 // If we have the value in the symbol table or fwd-ref table, return it.
1352 if (Val) {
1353 if (Val->getType() == Ty) return Val;
1354 Error(Loc, "'@" + Name + "' defined with type '" +
1355 getTypeString(Val->getType()) + "'");
1356 return nullptr;
1357 }
1358
1359 // Otherwise, create a new forward reference for this value and remember it.
1360 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1361 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1362 return FwdVal;
1363}
1364
1365GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1366 PointerType *PTy = dyn_cast<PointerType>(Ty);
1367 if (!PTy) {
1368 Error(Loc, "global variable reference must have pointer type");
1369 return nullptr;
1370 }
1371
1372 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1373
1374 // If this is a forward reference for the value, see if we already created a
1375 // forward ref record.
1376 if (!Val) {
1377 auto I = ForwardRefValIDs.find(ID);
1378 if (I != ForwardRefValIDs.end())
1379 Val = I->second.first;
1380 }
1381
1382 // If we have the value in the symbol table or fwd-ref table, return it.
1383 if (Val) {
1384 if (Val->getType() == Ty) return Val;
1385 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1386 getTypeString(Val->getType()) + "'");
1387 return nullptr;
1388 }
1389
1390 // Otherwise, create a new forward reference for this value and remember it.
1391 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1392 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1393 return FwdVal;
1394}
1395
1396//===----------------------------------------------------------------------===//
1397// Comdat Reference/Resolution Routines.
1398//===----------------------------------------------------------------------===//
1399
1400Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1401 // Look this name up in the comdat symbol table.
1402 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1403 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1404 if (I != ComdatSymTab.end())
1405 return &I->second;
1406
1407 // Otherwise, create a new forward reference for this value and remember it.
1408 Comdat *C = M->getOrInsertComdat(Name);
1409 ForwardRefComdats[Name] = Loc;
1410 return C;
1411}
1412
1413//===----------------------------------------------------------------------===//
1414// Helper Routines.
1415//===----------------------------------------------------------------------===//
1416
1417/// ParseToken - If the current token has the specified kind, eat it and return
1418/// success. Otherwise, emit the specified error and return failure.
1419bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1420 if (Lex.getKind() != T)
1421 return TokError(ErrMsg);
1422 Lex.Lex();
1423 return false;
1424}
1425
1426/// ParseStringConstant
1427/// ::= StringConstant
1428bool LLParser::ParseStringConstant(std::string &Result) {
1429 if (Lex.getKind() != lltok::StringConstant)
1430 return TokError("expected string constant");
1431 Result = Lex.getStrVal();
1432 Lex.Lex();
1433 return false;
1434}
1435
1436/// ParseUInt32
1437/// ::= uint32
1438bool LLParser::ParseUInt32(uint32_t &Val) {
1439 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1440 return TokError("expected integer");
1441 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1442 if (Val64 != unsigned(Val64))
1443 return TokError("expected 32-bit integer (too large)");
1444 Val = Val64;
1445 Lex.Lex();
1446 return false;
1447}
1448
1449/// ParseUInt64
1450/// ::= uint64
1451bool LLParser::ParseUInt64(uint64_t &Val) {
1452 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1453 return TokError("expected integer");
1454 Val = Lex.getAPSIntVal().getLimitedValue();
1455 Lex.Lex();
1456 return false;
1457}
1458
1459/// ParseTLSModel
1460/// := 'localdynamic'
1461/// := 'initialexec'
1462/// := 'localexec'
1463bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1464 switch (Lex.getKind()) {
1465 default:
1466 return TokError("expected localdynamic, initialexec or localexec");
1467 case lltok::kw_localdynamic:
1468 TLM = GlobalVariable::LocalDynamicTLSModel;
1469 break;
1470 case lltok::kw_initialexec:
1471 TLM = GlobalVariable::InitialExecTLSModel;
1472 break;
1473 case lltok::kw_localexec:
1474 TLM = GlobalVariable::LocalExecTLSModel;
1475 break;
1476 }
1477
1478 Lex.Lex();
1479 return false;
1480}
1481
1482/// ParseOptionalThreadLocal
1483/// := /*empty*/
1484/// := 'thread_local'
1485/// := 'thread_local' '(' tlsmodel ')'
1486bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1487 TLM = GlobalVariable::NotThreadLocal;
1488 if (!EatIfPresent(lltok::kw_thread_local))
1489 return false;
1490
1491 TLM = GlobalVariable::GeneralDynamicTLSModel;
1492 if (Lex.getKind() == lltok::lparen) {
1493 Lex.Lex();
1494 return ParseTLSModel(TLM) ||
1495 ParseToken(lltok::rparen, "expected ')' after thread local model");
1496 }
1497 return false;
1498}
1499
1500/// ParseOptionalAddrSpace
1501/// := /*empty*/
1502/// := 'addrspace' '(' uint32 ')'
1503bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1504 AddrSpace = 0;
1505 if (!EatIfPresent(lltok::kw_addrspace))
1506 return false;
1507 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1508 ParseUInt32(AddrSpace) ||
1509 ParseToken(lltok::rparen, "expected ')' in address space");
1510}
1511
1512/// ParseStringAttribute
1513/// := StringConstant
1514/// := StringConstant '=' StringConstant
1515bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1516 std::string Attr = Lex.getStrVal();
1517 Lex.Lex();
1518 std::string Val;
1519 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1520 return true;
1521 B.addAttribute(Attr, Val);
1522 return false;
1523}
1524
1525/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1526bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1527 bool HaveError = false;
1528
1529 B.clear();
1530
1531 while (true) {
1532 lltok::Kind Token = Lex.getKind();
1533 switch (Token) {
1534 default: // End of attributes.
1535 return HaveError;
1536 case lltok::StringConstant: {
1537 if (ParseStringAttribute(B))
1538 return true;
1539 continue;
1540 }
1541 case lltok::kw_align: {
1542 unsigned Alignment;
1543 if (ParseOptionalAlignment(Alignment))
1544 return true;
1545 B.addAlignmentAttr(Alignment);
1546 continue;
1547 }
1548 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1549 case lltok::kw_dereferenceable: {
1550 uint64_t Bytes;
1551 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1552 return true;
1553 B.addDereferenceableAttr(Bytes);
1554 continue;
1555 }
1556 case lltok::kw_dereferenceable_or_null: {
1557 uint64_t Bytes;
1558 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1559 return true;
1560 B.addDereferenceableOrNullAttr(Bytes);
1561 continue;
1562 }
1563 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1564 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1565 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1566 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1567 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1568 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1569 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1570 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1571 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1572 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1573 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1574 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1575 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1576 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1577 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1578
1579 case lltok::kw_alignstack:
1580 case lltok::kw_alwaysinline:
1581 case lltok::kw_argmemonly:
1582 case lltok::kw_builtin:
1583 case lltok::kw_inlinehint:
1584 case lltok::kw_jumptable:
1585 case lltok::kw_minsize:
1586 case lltok::kw_naked:
1587 case lltok::kw_nobuiltin:
1588 case lltok::kw_noduplicate:
1589 case lltok::kw_noimplicitfloat:
1590 case lltok::kw_noinline:
1591 case lltok::kw_nonlazybind:
1592 case lltok::kw_noredzone:
1593 case lltok::kw_noreturn:
1594 case lltok::kw_nocf_check:
1595 case lltok::kw_nounwind:
1596 case lltok::kw_optforfuzzing:
1597 case lltok::kw_optnone:
1598 case lltok::kw_optsize:
1599 case lltok::kw_returns_twice:
1600 case lltok::kw_sanitize_address:
1601 case lltok::kw_sanitize_hwaddress:
1602 case lltok::kw_sanitize_memory:
1603 case lltok::kw_sanitize_thread:
1604 case lltok::kw_ssp:
1605 case lltok::kw_sspreq:
1606 case lltok::kw_sspstrong:
1607 case lltok::kw_safestack:
1608 case lltok::kw_shadowcallstack:
1609 case lltok::kw_strictfp:
1610 case lltok::kw_uwtable:
1611 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1612 break;
1613 }
1614
1615 Lex.Lex();
1616 }
1617}
1618
1619/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1620bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1621 bool HaveError = false;
1622
1623 B.clear();
1624
1625 while (true) {
1626 lltok::Kind Token = Lex.getKind();
1627 switch (Token) {
1628 default: // End of attributes.
1629 return HaveError;
1630 case lltok::StringConstant: {
1631 if (ParseStringAttribute(B))
1632 return true;
1633 continue;
1634 }
1635 case lltok::kw_dereferenceable: {
1636 uint64_t Bytes;
1637 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1638 return true;
1639 B.addDereferenceableAttr(Bytes);
1640 continue;
1641 }
1642 case lltok::kw_dereferenceable_or_null: {
1643 uint64_t Bytes;
1644 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1645 return true;
1646 B.addDereferenceableOrNullAttr(Bytes);
1647 continue;
1648 }
1649 case lltok::kw_align: {
1650 unsigned Alignment;
1651 if (ParseOptionalAlignment(Alignment))
1652 return true;
1653 B.addAlignmentAttr(Alignment);
1654 continue;
1655 }
1656 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1657 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1658 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1659 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1660 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1661
1662 // Error handling.
1663 case lltok::kw_byval:
1664 case lltok::kw_inalloca:
1665 case lltok::kw_nest:
1666 case lltok::kw_nocapture:
1667 case lltok::kw_returned:
1668 case lltok::kw_sret:
1669 case lltok::kw_swifterror:
1670 case lltok::kw_swiftself:
1671 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1672 break;
1673
1674 case lltok::kw_alignstack:
1675 case lltok::kw_alwaysinline:
1676 case lltok::kw_argmemonly:
1677 case lltok::kw_builtin:
1678 case lltok::kw_cold:
1679 case lltok::kw_inlinehint:
1680 case lltok::kw_jumptable:
1681 case lltok::kw_minsize:
1682 case lltok::kw_naked:
1683 case lltok::kw_nobuiltin:
1684 case lltok::kw_noduplicate:
1685 case lltok::kw_noimplicitfloat:
1686 case lltok::kw_noinline:
1687 case lltok::kw_nonlazybind:
1688 case lltok::kw_noredzone:
1689 case lltok::kw_noreturn:
1690 case lltok::kw_nocf_check:
1691 case lltok::kw_nounwind:
1692 case lltok::kw_optforfuzzing:
1693 case lltok::kw_optnone:
1694 case lltok::kw_optsize:
1695 case lltok::kw_returns_twice:
1696 case lltok::kw_sanitize_address:
1697 case lltok::kw_sanitize_hwaddress:
1698 case lltok::kw_sanitize_memory:
1699 case lltok::kw_sanitize_thread:
1700 case lltok::kw_ssp:
1701 case lltok::kw_sspreq:
1702 case lltok::kw_sspstrong:
1703 case lltok::kw_safestack:
1704 case lltok::kw_shadowcallstack:
1705 case lltok::kw_strictfp:
1706 case lltok::kw_uwtable:
1707 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1708 break;
1709
1710 case lltok::kw_readnone:
1711 case lltok::kw_readonly:
1712 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1713 }
1714
1715 Lex.Lex();
1716 }
1717}
1718
1719static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1720 HasLinkage = true;
1721 switch (Kind) {
1722 default:
1723 HasLinkage = false;
1724 return GlobalValue::ExternalLinkage;
1725 case lltok::kw_private:
1726 return GlobalValue::PrivateLinkage;
1727 case lltok::kw_internal:
1728 return GlobalValue::InternalLinkage;
1729 case lltok::kw_weak:
1730 return GlobalValue::WeakAnyLinkage;
1731 case lltok::kw_weak_odr:
1732 return GlobalValue::WeakODRLinkage;
1733 case lltok::kw_linkonce:
1734 return GlobalValue::LinkOnceAnyLinkage;
1735 case lltok::kw_linkonce_odr:
1736 return GlobalValue::LinkOnceODRLinkage;
1737 case lltok::kw_available_externally:
1738 return GlobalValue::AvailableExternallyLinkage;
1739 case lltok::kw_appending:
1740 return GlobalValue::AppendingLinkage;
1741 case lltok::kw_common:
1742 return GlobalValue::CommonLinkage;
1743 case lltok::kw_extern_weak:
1744 return GlobalValue::ExternalWeakLinkage;
1745 case lltok::kw_external:
1746 return GlobalValue::ExternalLinkage;
1747 }
1748}
1749
1750/// ParseOptionalLinkage
1751/// ::= /*empty*/
1752/// ::= 'private'
1753/// ::= 'internal'
1754/// ::= 'weak'
1755/// ::= 'weak_odr'
1756/// ::= 'linkonce'
1757/// ::= 'linkonce_odr'
1758/// ::= 'available_externally'
1759/// ::= 'appending'
1760/// ::= 'common'
1761/// ::= 'extern_weak'
1762/// ::= 'external'
1763bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1764 unsigned &Visibility,
1765 unsigned &DLLStorageClass,
1766 bool &DSOLocal) {
1767 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1768 if (HasLinkage)
1769 Lex.Lex();
1770 ParseOptionalDSOLocal(DSOLocal);
1771 ParseOptionalVisibility(Visibility);
1772 ParseOptionalDLLStorageClass(DLLStorageClass);
1773
1774 if (DSOLocal && DLLStorageClass == GlobalValue::DLLImportStorageClass) {
1775 return Error(Lex.getLoc(), "dso_location and DLL-StorageClass mismatch");
1776 }
1777
1778 return false;
1779}
1780
1781void LLParser::ParseOptionalDSOLocal(bool &DSOLocal) {
1782 switch (Lex.getKind()) {
1783 default:
1784 DSOLocal = false;
1785 break;
1786 case lltok::kw_dso_local:
1787 DSOLocal = true;
1788 Lex.Lex();
1789 break;
1790 case lltok::kw_dso_preemptable:
1791 DSOLocal = false;
1792 Lex.Lex();
1793 break;
1794 }
1795}
1796
1797/// ParseOptionalVisibility
1798/// ::= /*empty*/
1799/// ::= 'default'
1800/// ::= 'hidden'
1801/// ::= 'protected'
1802///
1803void LLParser::ParseOptionalVisibility(unsigned &Res) {
1804 switch (Lex.getKind()) {
1805 default:
1806 Res = GlobalValue::DefaultVisibility;
1807 return;
1808 case lltok::kw_default:
1809 Res = GlobalValue::DefaultVisibility;
1810 break;
1811 case lltok::kw_hidden:
1812 Res = GlobalValue::HiddenVisibility;
1813 break;
1814 case lltok::kw_protected:
1815 Res = GlobalValue::ProtectedVisibility;
1816 break;
1817 }
1818 Lex.Lex();
1819}
1820
1821/// ParseOptionalDLLStorageClass
1822/// ::= /*empty*/
1823/// ::= 'dllimport'
1824/// ::= 'dllexport'
1825///
1826void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1827 switch (Lex.getKind()) {
1828 default:
1829 Res = GlobalValue::DefaultStorageClass;
1830 return;
1831 case lltok::kw_dllimport:
1832 Res = GlobalValue::DLLImportStorageClass;
1833 break;
1834 case lltok::kw_dllexport:
1835 Res = GlobalValue::DLLExportStorageClass;
1836 break;
1837 }
1838 Lex.Lex();
1839}
1840
1841/// ParseOptionalCallingConv
1842/// ::= /*empty*/
1843/// ::= 'ccc'
1844/// ::= 'fastcc'
1845/// ::= 'intel_ocl_bicc'
1846/// ::= 'coldcc'
1847/// ::= 'x86_stdcallcc'
1848/// ::= 'x86_fastcallcc'
1849/// ::= 'x86_thiscallcc'
1850/// ::= 'x86_vectorcallcc'
1851/// ::= 'arm_apcscc'
1852/// ::= 'arm_aapcscc'
1853/// ::= 'arm_aapcs_vfpcc'
1854/// ::= 'msp430_intrcc'
1855/// ::= 'avr_intrcc'
1856/// ::= 'avr_signalcc'
1857/// ::= 'ptx_kernel'
1858/// ::= 'ptx_device'
1859/// ::= 'spir_func'
1860/// ::= 'spir_kernel'
1861/// ::= 'x86_64_sysvcc'
1862/// ::= 'win64cc'
1863/// ::= 'webkit_jscc'
1864/// ::= 'anyregcc'
1865/// ::= 'preserve_mostcc'
1866/// ::= 'preserve_allcc'
1867/// ::= 'ghccc'
1868/// ::= 'swiftcc'
1869/// ::= 'x86_intrcc'
1870/// ::= 'hhvmcc'
1871/// ::= 'hhvm_ccc'
1872/// ::= 'cxx_fast_tlscc'
1873/// ::= 'amdgpu_vs'
1874/// ::= 'amdgpu_ls'
1875/// ::= 'amdgpu_hs'
1876/// ::= 'amdgpu_es'
1877/// ::= 'amdgpu_gs'
1878/// ::= 'amdgpu_ps'
1879/// ::= 'amdgpu_cs'
1880/// ::= 'amdgpu_kernel'
1881/// ::= 'cc' UINT
1882///
1883bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1884 switch (Lex.getKind()) {
1885 default: CC = CallingConv::C; return false;
1886 case lltok::kw_ccc: CC = CallingConv::C; break;
1887 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1888 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1889 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1890 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1891 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1892 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1893 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1894 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1895 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1896 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1897 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1898 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1899 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1900 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1901 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1902 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1903 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1904 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1905 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1906 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1907 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1908 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1909 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1910 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1911 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1912 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1913 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1914 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1915 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1916 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1917 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1918 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1919 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1920 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1921 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1922 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1923 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1924 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1925 case lltok::kw_cc: {
1926 Lex.Lex();
1927 return ParseUInt32(CC);
1928 }
1929 }
1930
1931 Lex.Lex();
1932 return false;
1933}
1934
1935/// ParseMetadataAttachment
1936/// ::= !dbg !42
1937bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1938 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment")(static_cast <bool> (Lex.getKind() == lltok::MetadataVar
&& "Expected metadata attachment") ? void (0) : __assert_fail
("Lex.getKind() == lltok::MetadataVar && \"Expected metadata attachment\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 1938, __extension__ __PRETTY_FUNCTION__))
;
1939
1940 std::string Name = Lex.getStrVal();
1941 Kind = M->getMDKindID(Name);
1942 Lex.Lex();
1943
1944 return ParseMDNode(MD);
1945}
1946
1947/// ParseInstructionMetadata
1948/// ::= !dbg !42 (',' !dbg !57)*
1949bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1950 do {
1951 if (Lex.getKind() != lltok::MetadataVar)
1952 return TokError("expected metadata after comma");
1953
1954 unsigned MDK;
1955 MDNode *N;
1956 if (ParseMetadataAttachment(MDK, N))
1957 return true;
1958
1959 Inst.setMetadata(MDK, N);
1960 if (MDK == LLVMContext::MD_tbaa)
1961 InstsWithTBAATag.push_back(&Inst);
1962
1963 // If this is the end of the list, we're done.
1964 } while (EatIfPresent(lltok::comma));
1965 return false;
1966}
1967
1968/// ParseGlobalObjectMetadataAttachment
1969/// ::= !dbg !57
1970bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1971 unsigned MDK;
1972 MDNode *N;
1973 if (ParseMetadataAttachment(MDK, N))
1974 return true;
1975
1976 GO.addMetadata(MDK, *N);
1977 return false;
1978}
1979
1980/// ParseOptionalFunctionMetadata
1981/// ::= (!dbg !57)*
1982bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1983 while (Lex.getKind() == lltok::MetadataVar)
1984 if (ParseGlobalObjectMetadataAttachment(F))
1985 return true;
1986 return false;
1987}
1988
1989/// ParseOptionalAlignment
1990/// ::= /* empty */
1991/// ::= 'align' 4
1992bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1993 Alignment = 0;
1994 if (!EatIfPresent(lltok::kw_align))
1995 return false;
1996 LocTy AlignLoc = Lex.getLoc();
1997 if (ParseUInt32(Alignment)) return true;
1998 if (!isPowerOf2_32(Alignment))
1999 return Error(AlignLoc, "alignment is not a power of two");
2000 if (Alignment > Value::MaximumAlignment)
2001 return Error(AlignLoc, "huge alignments are not supported yet");
2002 return false;
2003}
2004
2005/// ParseOptionalDerefAttrBytes
2006/// ::= /* empty */
2007/// ::= AttrKind '(' 4 ')'
2008///
2009/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
2010bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
2011 uint64_t &Bytes) {
2012 assert((AttrKind == lltok::kw_dereferenceable ||(static_cast <bool> ((AttrKind == lltok::kw_dereferenceable
|| AttrKind == lltok::kw_dereferenceable_or_null) &&
"contract!") ? void (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2014, __extension__ __PRETTY_FUNCTION__))
2013 AttrKind == lltok::kw_dereferenceable_or_null) &&(static_cast <bool> ((AttrKind == lltok::kw_dereferenceable
|| AttrKind == lltok::kw_dereferenceable_or_null) &&
"contract!") ? void (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2014, __extension__ __PRETTY_FUNCTION__))
2014 "contract!")(static_cast <bool> ((AttrKind == lltok::kw_dereferenceable
|| AttrKind == lltok::kw_dereferenceable_or_null) &&
"contract!") ? void (0) : __assert_fail ("(AttrKind == lltok::kw_dereferenceable || AttrKind == lltok::kw_dereferenceable_or_null) && \"contract!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2014, __extension__ __PRETTY_FUNCTION__))
;
2015
2016 Bytes = 0;
2017 if (!EatIfPresent(AttrKind))
2018 return false;
2019 LocTy ParenLoc = Lex.getLoc();
2020 if (!EatIfPresent(lltok::lparen))
2021 return Error(ParenLoc, "expected '('");
2022 LocTy DerefLoc = Lex.getLoc();
2023 if (ParseUInt64(Bytes)) return true;
2024 ParenLoc = Lex.getLoc();
2025 if (!EatIfPresent(lltok::rparen))
2026 return Error(ParenLoc, "expected ')'");
2027 if (!Bytes)
2028 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
2029 return false;
2030}
2031
2032/// ParseOptionalCommaAlign
2033/// ::=
2034/// ::= ',' align 4
2035///
2036/// This returns with AteExtraComma set to true if it ate an excess comma at the
2037/// end.
2038bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
2039 bool &AteExtraComma) {
2040 AteExtraComma = false;
2041 while (EatIfPresent(lltok::comma)) {
2042 // Metadata at the end is an early exit.
2043 if (Lex.getKind() == lltok::MetadataVar) {
2044 AteExtraComma = true;
2045 return false;
2046 }
2047
2048 if (Lex.getKind() != lltok::kw_align)
2049 return Error(Lex.getLoc(), "expected metadata or 'align'");
2050
2051 if (ParseOptionalAlignment(Alignment)) return true;
2052 }
2053
2054 return false;
2055}
2056
2057/// ParseOptionalCommaAddrSpace
2058/// ::=
2059/// ::= ',' addrspace(1)
2060///
2061/// This returns with AteExtraComma set to true if it ate an excess comma at the
2062/// end.
2063bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
2064 LocTy &Loc,
2065 bool &AteExtraComma) {
2066 AteExtraComma = false;
2067 while (EatIfPresent(lltok::comma)) {
2068 // Metadata at the end is an early exit.
2069 if (Lex.getKind() == lltok::MetadataVar) {
2070 AteExtraComma = true;
2071 return false;
2072 }
2073
2074 Loc = Lex.getLoc();
2075 if (Lex.getKind() != lltok::kw_addrspace)
2076 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
2077
2078 if (ParseOptionalAddrSpace(AddrSpace))
2079 return true;
2080 }
2081
2082 return false;
2083}
2084
2085bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
2086 Optional<unsigned> &HowManyArg) {
2087 Lex.Lex();
2088
2089 auto StartParen = Lex.getLoc();
2090 if (!EatIfPresent(lltok::lparen))
2091 return Error(StartParen, "expected '('");
2092
2093 if (ParseUInt32(BaseSizeArg))
2094 return true;
2095
2096 if (EatIfPresent(lltok::comma)) {
2097 auto HowManyAt = Lex.getLoc();
2098 unsigned HowMany;
2099 if (ParseUInt32(HowMany))
2100 return true;
2101 if (HowMany == BaseSizeArg)
2102 return Error(HowManyAt,
2103 "'allocsize' indices can't refer to the same parameter");
2104 HowManyArg = HowMany;
2105 } else
2106 HowManyArg = None;
2107
2108 auto EndParen = Lex.getLoc();
2109 if (!EatIfPresent(lltok::rparen))
2110 return Error(EndParen, "expected ')'");
2111 return false;
2112}
2113
2114/// ParseScopeAndOrdering
2115/// if isAtomic: ::= SyncScope? AtomicOrdering
2116/// else: ::=
2117///
2118/// This sets Scope and Ordering to the parsed values.
2119bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
2120 AtomicOrdering &Ordering) {
2121 if (!isAtomic)
2122 return false;
2123
2124 return ParseScope(SSID) || ParseOrdering(Ordering);
2125}
2126
2127/// ParseScope
2128/// ::= syncscope("singlethread" | "<target scope>")?
2129///
2130/// This sets synchronization scope ID to the ID of the parsed value.
2131bool LLParser::ParseScope(SyncScope::ID &SSID) {
2132 SSID = SyncScope::System;
2133 if (EatIfPresent(lltok::kw_syncscope)) {
2134 auto StartParenAt = Lex.getLoc();
2135 if (!EatIfPresent(lltok::lparen))
2136 return Error(StartParenAt, "Expected '(' in syncscope");
2137
2138 std::string SSN;
2139 auto SSNAt = Lex.getLoc();
2140 if (ParseStringConstant(SSN))
2141 return Error(SSNAt, "Expected synchronization scope name");
2142
2143 auto EndParenAt = Lex.getLoc();
2144 if (!EatIfPresent(lltok::rparen))
2145 return Error(EndParenAt, "Expected ')' in syncscope");
2146
2147 SSID = Context.getOrInsertSyncScopeID(SSN);
2148 }
2149
2150 return false;
2151}
2152
2153/// ParseOrdering
2154/// ::= AtomicOrdering
2155///
2156/// This sets Ordering to the parsed value.
2157bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
2158 switch (Lex.getKind()) {
2159 default: return TokError("Expected ordering on atomic instruction");
2160 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
2161 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
2162 // Not specified yet:
2163 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
2164 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
2165 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
2166 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
2167 case lltok::kw_seq_cst:
2168 Ordering = AtomicOrdering::SequentiallyConsistent;
2169 break;
2170 }
2171 Lex.Lex();
2172 return false;
2173}
2174
2175/// ParseOptionalStackAlignment
2176/// ::= /* empty */
2177/// ::= 'alignstack' '(' 4 ')'
2178bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2179 Alignment = 0;
2180 if (!EatIfPresent(lltok::kw_alignstack))
2181 return false;
2182 LocTy ParenLoc = Lex.getLoc();
2183 if (!EatIfPresent(lltok::lparen))
2184 return Error(ParenLoc, "expected '('");
2185 LocTy AlignLoc = Lex.getLoc();
2186 if (ParseUInt32(Alignment)) return true;
2187 ParenLoc = Lex.getLoc();
2188 if (!EatIfPresent(lltok::rparen))
2189 return Error(ParenLoc, "expected ')'");
2190 if (!isPowerOf2_32(Alignment))
2191 return Error(AlignLoc, "stack alignment is not a power of two");
2192 return false;
2193}
2194
2195/// ParseIndexList - This parses the index list for an insert/extractvalue
2196/// instruction. This sets AteExtraComma in the case where we eat an extra
2197/// comma at the end of the line and find that it is followed by metadata.
2198/// Clients that don't allow metadata can call the version of this function that
2199/// only takes one argument.
2200///
2201/// ParseIndexList
2202/// ::= (',' uint32)+
2203///
2204bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2205 bool &AteExtraComma) {
2206 AteExtraComma = false;
2207
2208 if (Lex.getKind() != lltok::comma)
2209 return TokError("expected ',' as start of index list");
2210
2211 while (EatIfPresent(lltok::comma)) {
2212 if (Lex.getKind() == lltok::MetadataVar) {
2213 if (Indices.empty()) return TokError("expected index");
2214 AteExtraComma = true;
2215 return false;
2216 }
2217 unsigned Idx = 0;
2218 if (ParseUInt32(Idx)) return true;
2219 Indices.push_back(Idx);
2220 }
2221
2222 return false;
2223}
2224
2225//===----------------------------------------------------------------------===//
2226// Type Parsing.
2227//===----------------------------------------------------------------------===//
2228
2229/// ParseType - Parse a type.
2230bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2231 SMLoc TypeLoc = Lex.getLoc();
2232 switch (Lex.getKind()) {
2233 default:
2234 return TokError(Msg);
2235 case lltok::Type:
2236 // Type ::= 'float' | 'void' (etc)
2237 Result = Lex.getTyVal();
2238 Lex.Lex();
2239 break;
2240 case lltok::lbrace:
2241 // Type ::= StructType
2242 if (ParseAnonStructType(Result, false))
2243 return true;
2244 break;
2245 case lltok::lsquare:
2246 // Type ::= '[' ... ']'
2247 Lex.Lex(); // eat the lsquare.
2248 if (ParseArrayVectorType(Result, false))
2249 return true;
2250 break;
2251 case lltok::less: // Either vector or packed struct.
2252 // Type ::= '<' ... '>'
2253 Lex.Lex();
2254 if (Lex.getKind() == lltok::lbrace) {
2255 if (ParseAnonStructType(Result, true) ||
2256 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2257 return true;
2258 } else if (ParseArrayVectorType(Result, true))
2259 return true;
2260 break;
2261 case lltok::LocalVar: {
2262 // Type ::= %foo
2263 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2264
2265 // If the type hasn't been defined yet, create a forward definition and
2266 // remember where that forward def'n was seen (in case it never is defined).
2267 if (!Entry.first) {
2268 Entry.first = StructType::create(Context, Lex.getStrVal());
2269 Entry.second = Lex.getLoc();
2270 }
2271 Result = Entry.first;
2272 Lex.Lex();
2273 break;
2274 }
2275
2276 case lltok::LocalVarID: {
2277 // Type ::= %4
2278 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2279
2280 // If the type hasn't been defined yet, create a forward definition and
2281 // remember where that forward def'n was seen (in case it never is defined).
2282 if (!Entry.first) {
2283 Entry.first = StructType::create(Context);
2284 Entry.second = Lex.getLoc();
2285 }
2286 Result = Entry.first;
2287 Lex.Lex();
2288 break;
2289 }
2290 }
2291
2292 // Parse the type suffixes.
2293 while (true) {
2294 switch (Lex.getKind()) {
2295 // End of type.
2296 default:
2297 if (!AllowVoid && Result->isVoidTy())
2298 return Error(TypeLoc, "void type only allowed for function results");
2299 return false;
2300
2301 // Type ::= Type '*'
2302 case lltok::star:
2303 if (Result->isLabelTy())
2304 return TokError("basic block pointers are invalid");
2305 if (Result->isVoidTy())
2306 return TokError("pointers to void are invalid - use i8* instead");
2307 if (!PointerType::isValidElementType(Result))
2308 return TokError("pointer to this type is invalid");
2309 Result = PointerType::getUnqual(Result);
2310 Lex.Lex();
2311 break;
2312
2313 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2314 case lltok::kw_addrspace: {
2315 if (Result->isLabelTy())
2316 return TokError("basic block pointers are invalid");
2317 if (Result->isVoidTy())
2318 return TokError("pointers to void are invalid; use i8* instead");
2319 if (!PointerType::isValidElementType(Result))
2320 return TokError("pointer to this type is invalid");
2321 unsigned AddrSpace;
2322 if (ParseOptionalAddrSpace(AddrSpace) ||
2323 ParseToken(lltok::star, "expected '*' in address space"))
2324 return true;
2325
2326 Result = PointerType::get(Result, AddrSpace);
2327 break;
2328 }
2329
2330 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2331 case lltok::lparen:
2332 if (ParseFunctionType(Result))
2333 return true;
2334 break;
2335 }
2336 }
2337}
2338
2339/// ParseParameterList
2340/// ::= '(' ')'
2341/// ::= '(' Arg (',' Arg)* ')'
2342/// Arg
2343/// ::= Type OptionalAttributes Value OptionalAttributes
2344bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2345 PerFunctionState &PFS, bool IsMustTailCall,
2346 bool InVarArgsFunc) {
2347 if (ParseToken(lltok::lparen, "expected '(' in call"))
2348 return true;
2349
2350 while (Lex.getKind() != lltok::rparen) {
2351 // If this isn't the first argument, we need a comma.
2352 if (!ArgList.empty() &&
2353 ParseToken(lltok::comma, "expected ',' in argument list"))
2354 return true;
2355
2356 // Parse an ellipsis if this is a musttail call in a variadic function.
2357 if (Lex.getKind() == lltok::dotdotdot) {
2358 const char *Msg = "unexpected ellipsis in argument list for ";
2359 if (!IsMustTailCall)
2360 return TokError(Twine(Msg) + "non-musttail call");
2361 if (!InVarArgsFunc)
2362 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2363 Lex.Lex(); // Lex the '...', it is purely for readability.
2364 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2365 }
2366
2367 // Parse the argument.
2368 LocTy ArgLoc;
2369 Type *ArgTy = nullptr;
2370 AttrBuilder ArgAttrs;
2371 Value *V;
2372 if (ParseType(ArgTy, ArgLoc))
2373 return true;
2374
2375 if (ArgTy->isMetadataTy()) {
2376 if (ParseMetadataAsValue(V, PFS))
2377 return true;
2378 } else {
2379 // Otherwise, handle normal operands.
2380 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2381 return true;
2382 }
2383 ArgList.push_back(ParamInfo(
2384 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2385 }
2386
2387 if (IsMustTailCall && InVarArgsFunc)
2388 return TokError("expected '...' at end of argument list for musttail call "
2389 "in varargs function");
2390
2391 Lex.Lex(); // Lex the ')'.
2392 return false;
2393}
2394
2395/// ParseOptionalOperandBundles
2396/// ::= /*empty*/
2397/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2398///
2399/// OperandBundle
2400/// ::= bundle-tag '(' ')'
2401/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2402///
2403/// bundle-tag ::= String Constant
2404bool LLParser::ParseOptionalOperandBundles(
2405 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2406 LocTy BeginLoc = Lex.getLoc();
2407 if (!EatIfPresent(lltok::lsquare))
2408 return false;
2409
2410 while (Lex.getKind() != lltok::rsquare) {
2411 // If this isn't the first operand bundle, we need a comma.
2412 if (!BundleList.empty() &&
2413 ParseToken(lltok::comma, "expected ',' in input list"))
2414 return true;
2415
2416 std::string Tag;
2417 if (ParseStringConstant(Tag))
2418 return true;
2419
2420 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2421 return true;
2422
2423 std::vector<Value *> Inputs;
2424 while (Lex.getKind() != lltok::rparen) {
2425 // If this isn't the first input, we need a comma.
2426 if (!Inputs.empty() &&
2427 ParseToken(lltok::comma, "expected ',' in input list"))
2428 return true;
2429
2430 Type *Ty = nullptr;
2431 Value *Input = nullptr;
2432 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2433 return true;
2434 Inputs.push_back(Input);
2435 }
2436
2437 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2438
2439 Lex.Lex(); // Lex the ')'.
2440 }
2441
2442 if (BundleList.empty())
2443 return Error(BeginLoc, "operand bundle set must not be empty");
2444
2445 Lex.Lex(); // Lex the ']'.
2446 return false;
2447}
2448
2449/// ParseArgumentList - Parse the argument list for a function type or function
2450/// prototype.
2451/// ::= '(' ArgTypeListI ')'
2452/// ArgTypeListI
2453/// ::= /*empty*/
2454/// ::= '...'
2455/// ::= ArgTypeList ',' '...'
2456/// ::= ArgType (',' ArgType)*
2457///
2458bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2459 bool &isVarArg){
2460 isVarArg = false;
2461 assert(Lex.getKind() == lltok::lparen)(static_cast <bool> (Lex.getKind() == lltok::lparen) ? void
(0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2461, __extension__ __PRETTY_FUNCTION__))
;
2462 Lex.Lex(); // eat the (.
2463
2464 if (Lex.getKind() == lltok::rparen) {
2465 // empty
2466 } else if (Lex.getKind() == lltok::dotdotdot) {
2467 isVarArg = true;
2468 Lex.Lex();
2469 } else {
2470 LocTy TypeLoc = Lex.getLoc();
2471 Type *ArgTy = nullptr;
2472 AttrBuilder Attrs;
2473 std::string Name;
2474
2475 if (ParseType(ArgTy) ||
2476 ParseOptionalParamAttrs(Attrs)) return true;
2477
2478 if (ArgTy->isVoidTy())
2479 return Error(TypeLoc, "argument can not have void type");
2480
2481 if (Lex.getKind() == lltok::LocalVar) {
2482 Name = Lex.getStrVal();
2483 Lex.Lex();
2484 }
2485
2486 if (!FunctionType::isValidArgumentType(ArgTy))
2487 return Error(TypeLoc, "invalid type for function argument");
2488
2489 ArgList.emplace_back(TypeLoc, ArgTy,
2490 AttributeSet::get(ArgTy->getContext(), Attrs),
2491 std::move(Name));
2492
2493 while (EatIfPresent(lltok::comma)) {
2494 // Handle ... at end of arg list.
2495 if (EatIfPresent(lltok::dotdotdot)) {
2496 isVarArg = true;
2497 break;
2498 }
2499
2500 // Otherwise must be an argument type.
2501 TypeLoc = Lex.getLoc();
2502 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2503
2504 if (ArgTy->isVoidTy())
2505 return Error(TypeLoc, "argument can not have void type");
2506
2507 if (Lex.getKind() == lltok::LocalVar) {
2508 Name = Lex.getStrVal();
2509 Lex.Lex();
2510 } else {
2511 Name = "";
2512 }
2513
2514 if (!ArgTy->isFirstClassType())
2515 return Error(TypeLoc, "invalid type for function argument");
2516
2517 ArgList.emplace_back(TypeLoc, ArgTy,
2518 AttributeSet::get(ArgTy->getContext(), Attrs),
2519 std::move(Name));
2520 }
2521 }
2522
2523 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2524}
2525
2526/// ParseFunctionType
2527/// ::= Type ArgumentList OptionalAttrs
2528bool LLParser::ParseFunctionType(Type *&Result) {
2529 assert(Lex.getKind() == lltok::lparen)(static_cast <bool> (Lex.getKind() == lltok::lparen) ? void
(0) : __assert_fail ("Lex.getKind() == lltok::lparen", "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2529, __extension__ __PRETTY_FUNCTION__))
;
2530
2531 if (!FunctionType::isValidReturnType(Result))
2532 return TokError("invalid function return type");
2533
2534 SmallVector<ArgInfo, 8> ArgList;
2535 bool isVarArg;
2536 if (ParseArgumentList(ArgList, isVarArg))
2537 return true;
2538
2539 // Reject names on the arguments lists.
2540 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2541 if (!ArgList[i].Name.empty())
2542 return Error(ArgList[i].Loc, "argument name invalid in function type");
2543 if (ArgList[i].Attrs.hasAttributes())
2544 return Error(ArgList[i].Loc,
2545 "argument attributes invalid in function type");
2546 }
2547
2548 SmallVector<Type*, 16> ArgListTy;
2549 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2550 ArgListTy.push_back(ArgList[i].Ty);
2551
2552 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2553 return false;
2554}
2555
2556/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2557/// other structs.
2558bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2559 SmallVector<Type*, 8> Elts;
2560 if (ParseStructBody(Elts)) return true;
2561
2562 Result = StructType::get(Context, Elts, Packed);
2563 return false;
2564}
2565
2566/// ParseStructDefinition - Parse a struct in a 'type' definition.
2567bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2568 std::pair<Type*, LocTy> &Entry,
2569 Type *&ResultTy) {
2570 // If the type was already defined, diagnose the redefinition.
2571 if (Entry.first && !Entry.second.isValid())
2572 return Error(TypeLoc, "redefinition of type");
2573
2574 // If we have opaque, just return without filling in the definition for the
2575 // struct. This counts as a definition as far as the .ll file goes.
2576 if (EatIfPresent(lltok::kw_opaque)) {
2577 // This type is being defined, so clear the location to indicate this.
2578 Entry.second = SMLoc();
2579
2580 // If this type number has never been uttered, create it.
2581 if (!Entry.first)
2582 Entry.first = StructType::create(Context, Name);
2583 ResultTy = Entry.first;
2584 return false;
2585 }
2586
2587 // If the type starts with '<', then it is either a packed struct or a vector.
2588 bool isPacked = EatIfPresent(lltok::less);
2589
2590 // If we don't have a struct, then we have a random type alias, which we
2591 // accept for compatibility with old files. These types are not allowed to be
2592 // forward referenced and not allowed to be recursive.
2593 if (Lex.getKind() != lltok::lbrace) {
2594 if (Entry.first)
2595 return Error(TypeLoc, "forward references to non-struct type");
2596
2597 ResultTy = nullptr;
2598 if (isPacked)
2599 return ParseArrayVectorType(ResultTy, true);
2600 return ParseType(ResultTy);
2601 }
2602
2603 // This type is being defined, so clear the location to indicate this.
2604 Entry.second = SMLoc();
2605
2606 // If this type number has never been uttered, create it.
2607 if (!Entry.first)
2608 Entry.first = StructType::create(Context, Name);
2609
2610 StructType *STy = cast<StructType>(Entry.first);
2611
2612 SmallVector<Type*, 8> Body;
2613 if (ParseStructBody(Body) ||
2614 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2615 return true;
2616
2617 STy->setBody(Body, isPacked);
2618 ResultTy = STy;
2619 return false;
2620}
2621
2622/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2623/// StructType
2624/// ::= '{' '}'
2625/// ::= '{' Type (',' Type)* '}'
2626/// ::= '<' '{' '}' '>'
2627/// ::= '<' '{' Type (',' Type)* '}' '>'
2628bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2629 assert(Lex.getKind() == lltok::lbrace)(static_cast <bool> (Lex.getKind() == lltok::lbrace) ? void
(0) : __assert_fail ("Lex.getKind() == lltok::lbrace", "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 2629, __extension__ __PRETTY_FUNCTION__))
;
2630 Lex.Lex(); // Consume the '{'
2631
2632 // Handle the empty struct.
2633 if (EatIfPresent(lltok::rbrace))
2634 return false;
2635
2636 LocTy EltTyLoc = Lex.getLoc();
2637 Type *Ty = nullptr;
2638 if (ParseType(Ty)) return true;
2639 Body.push_back(Ty);
2640
2641 if (!StructType::isValidElementType(Ty))
2642 return Error(EltTyLoc, "invalid element type for struct");
2643
2644 while (EatIfPresent(lltok::comma)) {
2645 EltTyLoc = Lex.getLoc();
2646 if (ParseType(Ty)) return true;
2647
2648 if (!StructType::isValidElementType(Ty))
2649 return Error(EltTyLoc, "invalid element type for struct");
2650
2651 Body.push_back(Ty);
2652 }
2653
2654 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2655}
2656
2657/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2658/// token has already been consumed.
2659/// Type
2660/// ::= '[' APSINTVAL 'x' Types ']'
2661/// ::= '<' APSINTVAL 'x' Types '>'
2662bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2663 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2664 Lex.getAPSIntVal().getBitWidth() > 64)
2665 return TokError("expected number in address space");
2666
2667 LocTy SizeLoc = Lex.getLoc();
2668 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2669 Lex.Lex();
2670
2671 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2672 return true;
2673
2674 LocTy TypeLoc = Lex.getLoc();
2675 Type *EltTy = nullptr;
2676 if (ParseType(EltTy)) return true;
2677
2678 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2679 "expected end of sequential type"))
2680 return true;
2681
2682 if (isVector) {
2683 if (Size == 0)
2684 return Error(SizeLoc, "zero element vector is illegal");
2685 if ((unsigned)Size != Size)
2686 return Error(SizeLoc, "size too large for vector");
2687 if (!VectorType::isValidElementType(EltTy))
2688 return Error(TypeLoc, "invalid vector element type");
2689 Result = VectorType::get(EltTy, unsigned(Size));
2690 } else {
2691 if (!ArrayType::isValidElementType(EltTy))
2692 return Error(TypeLoc, "invalid array element type");
2693 Result = ArrayType::get(EltTy, Size);
2694 }
2695 return false;
2696}
2697
2698//===----------------------------------------------------------------------===//
2699// Function Semantic Analysis.
2700//===----------------------------------------------------------------------===//
2701
2702LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2703 int functionNumber)
2704 : P(p), F(f), FunctionNumber(functionNumber) {
2705
2706 // Insert unnamed arguments into the NumberedVals list.
2707 for (Argument &A : F.args())
2708 if (!A.hasName())
2709 NumberedVals.push_back(&A);
2710}
2711
2712LLParser::PerFunctionState::~PerFunctionState() {
2713 // If there were any forward referenced non-basicblock values, delete them.
2714
2715 for (const auto &P : ForwardRefVals) {
2716 if (isa<BasicBlock>(P.second.first))
2717 continue;
2718 P.second.first->replaceAllUsesWith(
2719 UndefValue::get(P.second.first->getType()));
2720 P.second.first->deleteValue();
2721 }
2722
2723 for (const auto &P : ForwardRefValIDs) {
2724 if (isa<BasicBlock>(P.second.first))
2725 continue;
2726 P.second.first->replaceAllUsesWith(
2727 UndefValue::get(P.second.first->getType()));
2728 P.second.first->deleteValue();
2729 }
2730}
2731
2732bool LLParser::PerFunctionState::FinishFunction() {
2733 if (!ForwardRefVals.empty())
2734 return P.Error(ForwardRefVals.begin()->second.second,
2735 "use of undefined value '%" + ForwardRefVals.begin()->first +
2736 "'");
2737 if (!ForwardRefValIDs.empty())
2738 return P.Error(ForwardRefValIDs.begin()->second.second,
2739 "use of undefined value '%" +
2740 Twine(ForwardRefValIDs.begin()->first) + "'");
2741 return false;
2742}
2743
2744static bool isValidVariableType(Module *M, Type *Ty, Value *Val, bool IsCall) {
2745 if (Val->getType() == Ty)
2746 return true;
2747 // For calls we also accept variables in the program address space
2748 if (IsCall && isa<PointerType>(Ty)) {
2749 Type *TyInProgAS = cast<PointerType>(Ty)->getElementType()->getPointerTo(
2750 M->getDataLayout().getProgramAddressSpace());
2751 if (Val->getType() == TyInProgAS)
2752 return true;
2753 }
2754 return false;
2755}
2756
2757/// GetVal - Get a value with the specified name or ID, creating a
2758/// forward reference record if needed. This can return null if the value
2759/// exists but does not have the right type.
2760Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2761 LocTy Loc, bool IsCall) {
2762 // Look this name up in the normal function symbol table.
2763 Value *Val = F.getValueSymbolTable()->lookup(Name);
2764
2765 // If this is a forward reference for the value, see if we already created a
2766 // forward ref record.
2767 if (!Val) {
2768 auto I = ForwardRefVals.find(Name);
2769 if (I != ForwardRefVals.end())
2770 Val = I->second.first;
2771 }
2772
2773 // If we have the value in the symbol table or fwd-ref table, return it.
2774 if (Val) {
2775 if (isValidVariableType(P.M, Ty, Val, IsCall))
2776 return Val;
2777 if (Ty->isLabelTy())
2778 P.Error(Loc, "'%" + Name + "' is not a basic block");
2779 else
2780 P.Error(Loc, "'%" + Name + "' defined with type '" +
2781 getTypeString(Val->getType()) + "'");
2782 return nullptr;
2783 }
2784
2785 // Don't make placeholders with invalid type.
2786 if (!Ty->isFirstClassType()) {
2787 P.Error(Loc, "invalid use of a non-first-class type");
2788 return nullptr;
2789 }
2790
2791 // Otherwise, create a new forward reference for this value and remember it.
2792 Value *FwdVal;
2793 if (Ty->isLabelTy()) {
2794 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2795 } else {
2796 FwdVal = new Argument(Ty, Name);
2797 }
2798
2799 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2800 return FwdVal;
2801}
2802
2803Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2804 bool IsCall) {
2805 // Look this name up in the normal function symbol table.
2806 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2807
2808 // If this is a forward reference for the value, see if we already created a
2809 // forward ref record.
2810 if (!Val) {
2811 auto I = ForwardRefValIDs.find(ID);
2812 if (I != ForwardRefValIDs.end())
2813 Val = I->second.first;
2814 }
2815
2816 // If we have the value in the symbol table or fwd-ref table, return it.
2817 if (Val) {
2818 if (isValidVariableType(P.M, Ty, Val, IsCall))
2819 return Val;
2820 if (Ty->isLabelTy())
2821 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2822 else
2823 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2824 getTypeString(Val->getType()) + "'");
2825 return nullptr;
2826 }
2827
2828 if (!Ty->isFirstClassType()) {
2829 P.Error(Loc, "invalid use of a non-first-class type");
2830 return nullptr;
2831 }
2832
2833 // Otherwise, create a new forward reference for this value and remember it.
2834 Value *FwdVal;
2835 if (Ty->isLabelTy()) {
2836 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2837 } else {
2838 FwdVal = new Argument(Ty);
2839 }
2840
2841 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2842 return FwdVal;
2843}
2844
2845/// SetInstName - After an instruction is parsed and inserted into its
2846/// basic block, this installs its name.
2847bool LLParser::PerFunctionState::SetInstName(int NameID,
2848 const std::string &NameStr,
2849 LocTy NameLoc, Instruction *Inst) {
2850 // If this instruction has void type, it cannot have a name or ID specified.
2851 if (Inst->getType()->isVoidTy()) {
2852 if (NameID != -1 || !NameStr.empty())
2853 return P.Error(NameLoc, "instructions returning void cannot have a name");
2854 return false;
2855 }
2856
2857 // If this was a numbered instruction, verify that the instruction is the
2858 // expected value and resolve any forward references.
2859 if (NameStr.empty()) {
2860 // If neither a name nor an ID was specified, just use the next ID.
2861 if (NameID == -1)
2862 NameID = NumberedVals.size();
2863
2864 if (unsigned(NameID) != NumberedVals.size())
2865 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2866 Twine(NumberedVals.size()) + "'");
2867
2868 auto FI = ForwardRefValIDs.find(NameID);
2869 if (FI != ForwardRefValIDs.end()) {
2870 Value *Sentinel = FI->second.first;
2871 if (Sentinel->getType() != Inst->getType())
2872 return P.Error(NameLoc, "instruction forward referenced with type '" +
2873 getTypeString(FI->second.first->getType()) + "'");
2874
2875 Sentinel->replaceAllUsesWith(Inst);
2876 Sentinel->deleteValue();
2877 ForwardRefValIDs.erase(FI);
2878 }
2879
2880 NumberedVals.push_back(Inst);
2881 return false;
2882 }
2883
2884 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2885 auto FI = ForwardRefVals.find(NameStr);
2886 if (FI != ForwardRefVals.end()) {
2887 Value *Sentinel = FI->second.first;
2888 if (Sentinel->getType() != Inst->getType())
2889 return P.Error(NameLoc, "instruction forward referenced with type '" +
2890 getTypeString(FI->second.first->getType()) + "'");
2891
2892 Sentinel->replaceAllUsesWith(Inst);
2893 Sentinel->deleteValue();
2894 ForwardRefVals.erase(FI);
2895 }
2896
2897 // Set the name on the instruction.
2898 Inst->setName(NameStr);
2899
2900 if (Inst->getName() != NameStr)
2901 return P.Error(NameLoc, "multiple definition of local value named '" +
2902 NameStr + "'");
2903 return false;
2904}
2905
2906/// GetBB - Get a basic block with the specified name or ID, creating a
2907/// forward reference record if needed.
2908BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2909 LocTy Loc) {
2910 return dyn_cast_or_null<BasicBlock>(
2911 GetVal(Name, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2912}
2913
2914BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2915 return dyn_cast_or_null<BasicBlock>(
2916 GetVal(ID, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2917}
2918
2919/// DefineBB - Define the specified basic block, which is either named or
2920/// unnamed. If there is an error, this returns null otherwise it returns
2921/// the block being defined.
2922BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2923 LocTy Loc) {
2924 BasicBlock *BB;
2925 if (Name.empty())
2926 BB = GetBB(NumberedVals.size(), Loc);
2927 else
2928 BB = GetBB(Name, Loc);
2929 if (!BB) return nullptr; // Already diagnosed error.
2930
2931 // Move the block to the end of the function. Forward ref'd blocks are
2932 // inserted wherever they happen to be referenced.
2933 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2934
2935 // Remove the block from forward ref sets.
2936 if (Name.empty()) {
2937 ForwardRefValIDs.erase(NumberedVals.size());
2938 NumberedVals.push_back(BB);
2939 } else {
2940 // BB forward references are already in the function symbol table.
2941 ForwardRefVals.erase(Name);
2942 }
2943
2944 return BB;
2945}
2946
2947//===----------------------------------------------------------------------===//
2948// Constants.
2949//===----------------------------------------------------------------------===//
2950
2951/// ParseValID - Parse an abstract value that doesn't necessarily have a
2952/// type implied. For example, if we parse "4" we don't know what integer type
2953/// it has. The value will later be combined with its type and checked for
2954/// sanity. PFS is used to convert function-local operands of metadata (since
2955/// metadata operands are not just parsed here but also converted to values).
2956/// PFS can be null when we are not parsing metadata values inside a function.
2957bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2958 ID.Loc = Lex.getLoc();
2959 switch (Lex.getKind()) {
2960 default: return TokError("expected value token");
2961 case lltok::GlobalID: // @42
2962 ID.UIntVal = Lex.getUIntVal();
2963 ID.Kind = ValID::t_GlobalID;
2964 break;
2965 case lltok::GlobalVar: // @foo
2966 ID.StrVal = Lex.getStrVal();
2967 ID.Kind = ValID::t_GlobalName;
2968 break;
2969 case lltok::LocalVarID: // %42
2970 ID.UIntVal = Lex.getUIntVal();
2971 ID.Kind = ValID::t_LocalID;
2972 break;
2973 case lltok::LocalVar: // %foo
2974 ID.StrVal = Lex.getStrVal();
2975 ID.Kind = ValID::t_LocalName;
2976 break;
2977 case lltok::APSInt:
2978 ID.APSIntVal = Lex.getAPSIntVal();
2979 ID.Kind = ValID::t_APSInt;
2980 break;
2981 case lltok::APFloat:
2982 ID.APFloatVal = Lex.getAPFloatVal();
2983 ID.Kind = ValID::t_APFloat;
2984 break;
2985 case lltok::kw_true:
2986 ID.ConstantVal = ConstantInt::getTrue(Context);
2987 ID.Kind = ValID::t_Constant;
2988 break;
2989 case lltok::kw_false:
2990 ID.ConstantVal = ConstantInt::getFalse(Context);
2991 ID.Kind = ValID::t_Constant;
2992 break;
2993 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2994 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2995 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2996 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2997
2998 case lltok::lbrace: {
2999 // ValID ::= '{' ConstVector '}'
3000 Lex.Lex();
3001 SmallVector<Constant*, 16> Elts;
3002 if (ParseGlobalValueVector(Elts) ||
3003 ParseToken(lltok::rbrace, "expected end of struct constant"))
3004 return true;
3005
3006 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
3007 ID.UIntVal = Elts.size();
3008 memcpy(ID.ConstantStructElts.get(), Elts.data(),
3009 Elts.size() * sizeof(Elts[0]));
3010 ID.Kind = ValID::t_ConstantStruct;
3011 return false;
3012 }
3013 case lltok::less: {
3014 // ValID ::= '<' ConstVector '>' --> Vector.
3015 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
3016 Lex.Lex();
3017 bool isPackedStruct = EatIfPresent(lltok::lbrace);
3018
3019 SmallVector<Constant*, 16> Elts;
3020 LocTy FirstEltLoc = Lex.getLoc();
3021 if (ParseGlobalValueVector(Elts) ||
3022 (isPackedStruct &&
3023 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
3024 ParseToken(lltok::greater, "expected end of constant"))
3025 return true;
3026
3027 if (isPackedStruct) {
3028 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
3029 memcpy(ID.ConstantStructElts.get(), Elts.data(),
3030 Elts.size() * sizeof(Elts[0]));
3031 ID.UIntVal = Elts.size();
3032 ID.Kind = ValID::t_PackedConstantStruct;
3033 return false;
3034 }
3035
3036 if (Elts.empty())
3037 return Error(ID.Loc, "constant vector must not be empty");
3038
3039 if (!Elts[0]->getType()->isIntegerTy() &&
3040 !Elts[0]->getType()->isFloatingPointTy() &&
3041 !Elts[0]->getType()->isPointerTy())
3042 return Error(FirstEltLoc,
3043 "vector elements must have integer, pointer or floating point type");
3044
3045 // Verify that all the vector elements have the same type.
3046 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
3047 if (Elts[i]->getType() != Elts[0]->getType())
3048 return Error(FirstEltLoc,
3049 "vector element #" + Twine(i) +
3050 " is not of type '" + getTypeString(Elts[0]->getType()));
3051
3052 ID.ConstantVal = ConstantVector::get(Elts);
3053 ID.Kind = ValID::t_Constant;
3054 return false;
3055 }
3056 case lltok::lsquare: { // Array Constant
3057 Lex.Lex();
3058 SmallVector<Constant*, 16> Elts;
3059 LocTy FirstEltLoc = Lex.getLoc();
3060 if (ParseGlobalValueVector(Elts) ||
3061 ParseToken(lltok::rsquare, "expected end of array constant"))
3062 return true;
3063
3064 // Handle empty element.
3065 if (Elts.empty()) {
3066 // Use undef instead of an array because it's inconvenient to determine
3067 // the element type at this point, there being no elements to examine.
3068 ID.Kind = ValID::t_EmptyArray;
3069 return false;
3070 }
3071
3072 if (!Elts[0]->getType()->isFirstClassType())
3073 return Error(FirstEltLoc, "invalid array element type: " +
3074 getTypeString(Elts[0]->getType()));
3075
3076 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
3077
3078 // Verify all elements are correct type!
3079 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
3080 if (Elts[i]->getType() != Elts[0]->getType())
3081 return Error(FirstEltLoc,
3082 "array element #" + Twine(i) +
3083 " is not of type '" + getTypeString(Elts[0]->getType()));
3084 }
3085
3086 ID.ConstantVal = ConstantArray::get(ATy, Elts);
3087 ID.Kind = ValID::t_Constant;
3088 return false;
3089 }
3090 case lltok::kw_c: // c "foo"
3091 Lex.Lex();
3092 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
3093 false);
3094 if (ParseToken(lltok::StringConstant, "expected string")) return true;
3095 ID.Kind = ValID::t_Constant;
3096 return false;
3097
3098 case lltok::kw_asm: {
3099 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
3100 // STRINGCONSTANT
3101 bool HasSideEffect, AlignStack, AsmDialect;
3102 Lex.Lex();
3103 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
3104 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
3105 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
3106 ParseStringConstant(ID.StrVal) ||
3107 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
3108 ParseToken(lltok::StringConstant, "expected constraint string"))
3109 return true;
3110 ID.StrVal2 = Lex.getStrVal();
3111 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
3112 (unsigned(AsmDialect)<<2);
3113 ID.Kind = ValID::t_InlineAsm;
3114 return false;
3115 }
3116
3117 case lltok::kw_blockaddress: {
3118 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
3119 Lex.Lex();
3120
3121 ValID Fn, Label;
3122
3123 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
3124 ParseValID(Fn) ||
3125 ParseToken(lltok::comma, "expected comma in block address expression")||
3126 ParseValID(Label) ||
3127 ParseToken(lltok::rparen, "expected ')' in block address expression"))
3128 return true;
3129
3130 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
3131 return Error(Fn.Loc, "expected function name in blockaddress");
3132 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
3133 return Error(Label.Loc, "expected basic block name in blockaddress");
3134
3135 // Try to find the function (but skip it if it's forward-referenced).
3136 GlobalValue *GV = nullptr;
3137 if (Fn.Kind == ValID::t_GlobalID) {
3138 if (Fn.UIntVal < NumberedVals.size())
3139 GV = NumberedVals[Fn.UIntVal];
3140 } else if (!ForwardRefVals.count(Fn.StrVal)) {
3141 GV = M->getNamedValue(Fn.StrVal);
3142 }
3143 Function *F = nullptr;
3144 if (GV) {
3145 // Confirm that it's actually a function with a definition.
3146 if (!isa<Function>(GV))
3147 return Error(Fn.Loc, "expected function name in blockaddress");
3148 F = cast<Function>(GV);
3149 if (F->isDeclaration())
3150 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
3151 }
3152
3153 if (!F) {
3154 // Make a global variable as a placeholder for this reference.
3155 GlobalValue *&FwdRef =
3156 ForwardRefBlockAddresses.insert(std::make_pair(
3157 std::move(Fn),
3158 std::map<ValID, GlobalValue *>()))
3159 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3160 .first->second;
3161 if (!FwdRef)
3162 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3163 GlobalValue::InternalLinkage, nullptr, "");
3164 ID.ConstantVal = FwdRef;
3165 ID.Kind = ValID::t_Constant;
3166 return false;
3167 }
3168
3169 // We found the function; now find the basic block. Don't use PFS, since we
3170 // might be inside a constant expression.
3171 BasicBlock *BB;
3172 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3173 if (Label.Kind == ValID::t_LocalID)
3174 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3175 else
3176 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3177 if (!BB)
3178 return Error(Label.Loc, "referenced value is not a basic block");
3179 } else {
3180 if (Label.Kind == ValID::t_LocalID)
3181 return Error(Label.Loc, "cannot take address of numeric label after "
3182 "the function is defined");
3183 BB = dyn_cast_or_null<BasicBlock>(
3184 F->getValueSymbolTable()->lookup(Label.StrVal));
3185 if (!BB)
3186 return Error(Label.Loc, "referenced value is not a basic block");
3187 }
3188
3189 ID.ConstantVal = BlockAddress::get(F, BB);
3190 ID.Kind = ValID::t_Constant;
3191 return false;
3192 }
3193
3194 case lltok::kw_trunc:
3195 case lltok::kw_zext:
3196 case lltok::kw_sext:
3197 case lltok::kw_fptrunc:
3198 case lltok::kw_fpext:
3199 case lltok::kw_bitcast:
3200 case lltok::kw_addrspacecast:
3201 case lltok::kw_uitofp:
3202 case lltok::kw_sitofp:
3203 case lltok::kw_fptoui:
3204 case lltok::kw_fptosi:
3205 case lltok::kw_inttoptr:
3206 case lltok::kw_ptrtoint: {
3207 unsigned Opc = Lex.getUIntVal();
3208 Type *DestTy = nullptr;
3209 Constant *SrcVal;
3210 Lex.Lex();
3211 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3212 ParseGlobalTypeAndValue(SrcVal) ||
3213 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3214 ParseType(DestTy) ||
3215 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3216 return true;
3217 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3218 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3219 getTypeString(SrcVal->getType()) + "' to '" +
3220 getTypeString(DestTy) + "'");
3221 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3222 SrcVal, DestTy);
3223 ID.Kind = ValID::t_Constant;
3224 return false;
3225 }
3226 case lltok::kw_extractvalue: {
3227 Lex.Lex();
3228 Constant *Val;
3229 SmallVector<unsigned, 4> Indices;
3230 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3231 ParseGlobalTypeAndValue(Val) ||
3232 ParseIndexList(Indices) ||
3233 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3234 return true;
3235
3236 if (!Val->getType()->isAggregateType())
3237 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3238 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3239 return Error(ID.Loc, "invalid indices for extractvalue");
3240 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3241 ID.Kind = ValID::t_Constant;
3242 return false;
3243 }
3244 case lltok::kw_insertvalue: {
3245 Lex.Lex();
3246 Constant *Val0, *Val1;
3247 SmallVector<unsigned, 4> Indices;
3248 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3249 ParseGlobalTypeAndValue(Val0) ||
3250 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3251 ParseGlobalTypeAndValue(Val1) ||
3252 ParseIndexList(Indices) ||
3253 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3254 return true;
3255 if (!Val0->getType()->isAggregateType())
3256 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3257 Type *IndexedType =
3258 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3259 if (!IndexedType)
3260 return Error(ID.Loc, "invalid indices for insertvalue");
3261 if (IndexedType != Val1->getType())
3262 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3263 getTypeString(Val1->getType()) +
3264 "' instead of '" + getTypeString(IndexedType) +
3265 "'");
3266 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3267 ID.Kind = ValID::t_Constant;
3268 return false;
3269 }
3270 case lltok::kw_icmp:
3271 case lltok::kw_fcmp: {
3272 unsigned PredVal, Opc = Lex.getUIntVal();
3273 Constant *Val0, *Val1;
3274 Lex.Lex();
3275 if (ParseCmpPredicate(PredVal, Opc) ||
3276 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3277 ParseGlobalTypeAndValue(Val0) ||
3278 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3279 ParseGlobalTypeAndValue(Val1) ||
3280 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3281 return true;
3282
3283 if (Val0->getType() != Val1->getType())
3284 return Error(ID.Loc, "compare operands must have the same type");
3285
3286 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3287
3288 if (Opc == Instruction::FCmp) {
3289 if (!Val0->getType()->isFPOrFPVectorTy())
3290 return Error(ID.Loc, "fcmp requires floating point operands");
3291 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3292 } else {
3293 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!")(static_cast <bool> (Opc == Instruction::ICmp &&
"Unexpected opcode for CmpInst!") ? void (0) : __assert_fail
("Opc == Instruction::ICmp && \"Unexpected opcode for CmpInst!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3293, __extension__ __PRETTY_FUNCTION__))
;
3294 if (!Val0->getType()->isIntOrIntVectorTy() &&
3295 !Val0->getType()->isPtrOrPtrVectorTy())
3296 return Error(ID.Loc, "icmp requires pointer or integer operands");
3297 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3298 }
3299 ID.Kind = ValID::t_Constant;
3300 return false;
3301 }
3302
3303 // Binary Operators.
3304 case lltok::kw_add:
3305 case lltok::kw_fadd:
3306 case lltok::kw_sub:
3307 case lltok::kw_fsub:
3308 case lltok::kw_mul:
3309 case lltok::kw_fmul:
3310 case lltok::kw_udiv:
3311 case lltok::kw_sdiv:
3312 case lltok::kw_fdiv:
3313 case lltok::kw_urem:
3314 case lltok::kw_srem:
3315 case lltok::kw_frem:
3316 case lltok::kw_shl:
3317 case lltok::kw_lshr:
3318 case lltok::kw_ashr: {
3319 bool NUW = false;
3320 bool NSW = false;
3321 bool Exact = false;
3322 unsigned Opc = Lex.getUIntVal();
3323 Constant *Val0, *Val1;
3324 Lex.Lex();
3325 LocTy ModifierLoc = Lex.getLoc();
3326 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3327 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3328 if (EatIfPresent(lltok::kw_nuw))
3329 NUW = true;
3330 if (EatIfPresent(lltok::kw_nsw)) {
3331 NSW = true;
3332 if (EatIfPresent(lltok::kw_nuw))
3333 NUW = true;
3334 }
3335 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3336 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3337 if (EatIfPresent(lltok::kw_exact))
3338 Exact = true;
3339 }
3340 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3341 ParseGlobalTypeAndValue(Val0) ||
3342 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3343 ParseGlobalTypeAndValue(Val1) ||
3344 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3345 return true;
3346 if (Val0->getType() != Val1->getType())
3347 return Error(ID.Loc, "operands of constexpr must have same type");
3348 if (!Val0->getType()->isIntOrIntVectorTy()) {
3349 if (NUW)
3350 return Error(ModifierLoc, "nuw only applies to integer operations");
3351 if (NSW)
3352 return Error(ModifierLoc, "nsw only applies to integer operations");
3353 }
3354 // Check that the type is valid for the operator.
3355 switch (Opc) {
3356 case Instruction::Add:
3357 case Instruction::Sub:
3358 case Instruction::Mul:
3359 case Instruction::UDiv:
3360 case Instruction::SDiv:
3361 case Instruction::URem:
3362 case Instruction::SRem:
3363 case Instruction::Shl:
3364 case Instruction::AShr:
3365 case Instruction::LShr:
3366 if (!Val0->getType()->isIntOrIntVectorTy())
3367 return Error(ID.Loc, "constexpr requires integer operands");
3368 break;
3369 case Instruction::FAdd:
3370 case Instruction::FSub:
3371 case Instruction::FMul:
3372 case Instruction::FDiv:
3373 case Instruction::FRem:
3374 if (!Val0->getType()->isFPOrFPVectorTy())
3375 return Error(ID.Loc, "constexpr requires fp operands");
3376 break;
3377 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3377)
;
3378 }
3379 unsigned Flags = 0;
3380 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3381 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3382 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3383 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3384 ID.ConstantVal = C;
3385 ID.Kind = ValID::t_Constant;
3386 return false;
3387 }
3388
3389 // Logical Operations
3390 case lltok::kw_and:
3391 case lltok::kw_or:
3392 case lltok::kw_xor: {
3393 unsigned Opc = Lex.getUIntVal();
3394 Constant *Val0, *Val1;
3395 Lex.Lex();
3396 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3397 ParseGlobalTypeAndValue(Val0) ||
3398 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3399 ParseGlobalTypeAndValue(Val1) ||
3400 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3401 return true;
3402 if (Val0->getType() != Val1->getType())
3403 return Error(ID.Loc, "operands of constexpr must have same type");
3404 if (!Val0->getType()->isIntOrIntVectorTy())
3405 return Error(ID.Loc,
3406 "constexpr requires integer or integer vector operands");
3407 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3408 ID.Kind = ValID::t_Constant;
3409 return false;
3410 }
3411
3412 case lltok::kw_getelementptr:
3413 case lltok::kw_shufflevector:
3414 case lltok::kw_insertelement:
3415 case lltok::kw_extractelement:
3416 case lltok::kw_select: {
3417 unsigned Opc = Lex.getUIntVal();
3418 SmallVector<Constant*, 16> Elts;
3419 bool InBounds = false;
3420 Type *Ty;
3421 Lex.Lex();
3422
3423 if (Opc == Instruction::GetElementPtr)
3424 InBounds = EatIfPresent(lltok::kw_inbounds);
3425
3426 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3427 return true;
3428
3429 LocTy ExplicitTypeLoc = Lex.getLoc();
3430 if (Opc == Instruction::GetElementPtr) {
3431 if (ParseType(Ty) ||
3432 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3433 return true;
3434 }
3435
3436 Optional<unsigned> InRangeOp;
3437 if (ParseGlobalValueVector(
3438 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3439 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3440 return true;
3441
3442 if (Opc == Instruction::GetElementPtr) {
3443 if (Elts.size() == 0 ||
3444 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3445 return Error(ID.Loc, "base of getelementptr must be a pointer");
3446
3447 Type *BaseType = Elts[0]->getType();
3448 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3449 if (Ty != BasePointerType->getElementType())
3450 return Error(
3451 ExplicitTypeLoc,
3452 "explicit pointee type doesn't match operand's pointee type");
3453
3454 unsigned GEPWidth =
3455 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3456
3457 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3458 for (Constant *Val : Indices) {
3459 Type *ValTy = Val->getType();
3460 if (!ValTy->isIntOrIntVectorTy())
3461 return Error(ID.Loc, "getelementptr index must be an integer");
3462 if (ValTy->isVectorTy()) {
3463 unsigned ValNumEl = ValTy->getVectorNumElements();
3464 if (GEPWidth && (ValNumEl != GEPWidth))
3465 return Error(
3466 ID.Loc,
3467 "getelementptr vector index has a wrong number of elements");
3468 // GEPWidth may have been unknown because the base is a scalar,
3469 // but it is known now.
3470 GEPWidth = ValNumEl;
3471 }
3472 }
3473
3474 SmallPtrSet<Type*, 4> Visited;
3475 if (!Indices.empty() && !Ty->isSized(&Visited))
3476 return Error(ID.Loc, "base element of getelementptr must be sized");
3477
3478 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3479 return Error(ID.Loc, "invalid getelementptr indices");
3480
3481 if (InRangeOp) {
3482 if (*InRangeOp == 0)
3483 return Error(ID.Loc,
3484 "inrange keyword may not appear on pointer operand");
3485 --*InRangeOp;
3486 }
3487
3488 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3489 InBounds, InRangeOp);
3490 } else if (Opc == Instruction::Select) {
3491 if (Elts.size() != 3)
3492 return Error(ID.Loc, "expected three operands to select");
3493 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3494 Elts[2]))
3495 return Error(ID.Loc, Reason);
3496 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3497 } else if (Opc == Instruction::ShuffleVector) {
3498 if (Elts.size() != 3)
3499 return Error(ID.Loc, "expected three operands to shufflevector");
3500 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3501 return Error(ID.Loc, "invalid operands to shufflevector");
3502 ID.ConstantVal =
3503 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3504 } else if (Opc == Instruction::ExtractElement) {
3505 if (Elts.size() != 2)
3506 return Error(ID.Loc, "expected two operands to extractelement");
3507 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3508 return Error(ID.Loc, "invalid extractelement operands");
3509 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3510 } else {
3511 assert(Opc == Instruction::InsertElement && "Unknown opcode")(static_cast <bool> (Opc == Instruction::InsertElement &&
"Unknown opcode") ? void (0) : __assert_fail ("Opc == Instruction::InsertElement && \"Unknown opcode\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3511, __extension__ __PRETTY_FUNCTION__))
;
3512 if (Elts.size() != 3)
3513 return Error(ID.Loc, "expected three operands to insertelement");
3514 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3515 return Error(ID.Loc, "invalid insertelement operands");
3516 ID.ConstantVal =
3517 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3518 }
3519
3520 ID.Kind = ValID::t_Constant;
3521 return false;
3522 }
3523 }
3524
3525 Lex.Lex();
3526 return false;
3527}
3528
3529/// ParseGlobalValue - Parse a global value with the specified type.
3530bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3531 C = nullptr;
3532 ValID ID;
3533 Value *V = nullptr;
3534 bool Parsed = ParseValID(ID) ||
3535 ConvertValIDToValue(Ty, ID, V, nullptr, /*IsCall=*/false);
3536 if (V && !(C = dyn_cast<Constant>(V)))
3537 return Error(ID.Loc, "global values must be constants");
3538 return Parsed;
3539}
3540
3541bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3542 Type *Ty = nullptr;
3543 return ParseType(Ty) ||
3544 ParseGlobalValue(Ty, V);
3545}
3546
3547bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3548 C = nullptr;
3549
3550 LocTy KwLoc = Lex.getLoc();
3551 if (!EatIfPresent(lltok::kw_comdat))
3552 return false;
3553
3554 if (EatIfPresent(lltok::lparen)) {
3555 if (Lex.getKind() != lltok::ComdatVar)
3556 return TokError("expected comdat variable");
3557 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3558 Lex.Lex();
3559 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3560 return true;
3561 } else {
3562 if (GlobalName.empty())
3563 return TokError("comdat cannot be unnamed");
3564 C = getComdat(GlobalName, KwLoc);
3565 }
3566
3567 return false;
3568}
3569
3570/// ParseGlobalValueVector
3571/// ::= /*empty*/
3572/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3573bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3574 Optional<unsigned> *InRangeOp) {
3575 // Empty list.
3576 if (Lex.getKind() == lltok::rbrace ||
3577 Lex.getKind() == lltok::rsquare ||
3578 Lex.getKind() == lltok::greater ||
3579 Lex.getKind() == lltok::rparen)
3580 return false;
3581
3582 do {
3583 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3584 *InRangeOp = Elts.size();
3585
3586 Constant *C;
3587 if (ParseGlobalTypeAndValue(C)) return true;
3588 Elts.push_back(C);
3589 } while (EatIfPresent(lltok::comma));
3590
3591 return false;
3592}
3593
3594bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3595 SmallVector<Metadata *, 16> Elts;
3596 if (ParseMDNodeVector(Elts))
3597 return true;
3598
3599 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3600 return false;
3601}
3602
3603/// MDNode:
3604/// ::= !{ ... }
3605/// ::= !7
3606/// ::= !DILocation(...)
3607bool LLParser::ParseMDNode(MDNode *&N) {
3608 if (Lex.getKind() == lltok::MetadataVar)
3609 return ParseSpecializedMDNode(N);
3610
3611 return ParseToken(lltok::exclaim, "expected '!' here") ||
3612 ParseMDNodeTail(N);
3613}
3614
3615bool LLParser::ParseMDNodeTail(MDNode *&N) {
3616 // !{ ... }
3617 if (Lex.getKind() == lltok::lbrace)
3618 return ParseMDTuple(N);
3619
3620 // !42
3621 return ParseMDNodeID(N);
3622}
3623
3624namespace {
3625
3626/// Structure to represent an optional metadata field.
3627template <class FieldTy> struct MDFieldImpl {
3628 typedef MDFieldImpl ImplTy;
3629 FieldTy Val;
3630 bool Seen;
3631
3632 void assign(FieldTy Val) {
3633 Seen = true;
3634 this->Val = std::move(Val);
3635 }
3636
3637 explicit MDFieldImpl(FieldTy Default)
3638 : Val(std::move(Default)), Seen(false) {}
3639};
3640
3641/// Structure to represent an optional metadata field that
3642/// can be of either type (A or B) and encapsulates the
3643/// MD<typeofA>Field and MD<typeofB>Field structs, so not
3644/// to reimplement the specifics for representing each Field.
3645template <class FieldTypeA, class FieldTypeB> struct MDEitherFieldImpl {
3646 typedef MDEitherFieldImpl<FieldTypeA, FieldTypeB> ImplTy;
3647 FieldTypeA A;
3648 FieldTypeB B;
3649 bool Seen;
3650
3651 enum {
3652 IsInvalid = 0,
3653 IsTypeA = 1,
3654 IsTypeB = 2
3655 } WhatIs;
3656
3657 void assign(FieldTypeA A) {
3658 Seen = true;
3659 this->A = std::move(A);
3660 WhatIs = IsTypeA;
3661 }
3662
3663 void assign(FieldTypeB B) {
3664 Seen = true;
3665 this->B = std::move(B);
3666 WhatIs = IsTypeB;
3667 }
3668
3669 explicit MDEitherFieldImpl(FieldTypeA DefaultA, FieldTypeB DefaultB)
3670 : A(std::move(DefaultA)), B(std::move(DefaultB)), Seen(false),
3671 WhatIs(IsInvalid) {}
3672};
3673
3674struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3675 uint64_t Max;
3676
3677 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3678 : ImplTy(Default), Max(Max) {}
3679};
3680
3681struct LineField : public MDUnsignedField {
3682 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3683};
3684
3685struct ColumnField : public MDUnsignedField {
3686 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3687};
3688
3689struct DwarfTagField : public MDUnsignedField {
3690 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3691 DwarfTagField(dwarf::Tag DefaultTag)
3692 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3693};
3694
3695struct DwarfMacinfoTypeField : public MDUnsignedField {
3696 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3697 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3698 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3699};
3700
3701struct DwarfAttEncodingField : public MDUnsignedField {
3702 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3703};
3704
3705struct DwarfVirtualityField : public MDUnsignedField {
3706 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3707};
3708
3709struct DwarfLangField : public MDUnsignedField {
3710 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3711};
3712
3713struct DwarfCCField : public MDUnsignedField {
3714 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3715};
3716
3717struct EmissionKindField : public MDUnsignedField {
3718 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3719};
3720
3721struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3722 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3723};
3724
3725struct MDSignedField : public MDFieldImpl<int64_t> {
3726 int64_t Min;
3727 int64_t Max;
3728
3729 MDSignedField(int64_t Default = 0)
3730 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3731 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3732 : ImplTy(Default), Min(Min), Max(Max) {}
3733};
3734
3735struct MDBoolField : public MDFieldImpl<bool> {
3736 MDBoolField(bool Default = false) : ImplTy(Default) {}
3737};
3738
3739struct MDField : public MDFieldImpl<Metadata *> {
3740 bool AllowNull;
3741
3742 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3743};
3744
3745struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3746 MDConstant() : ImplTy(nullptr) {}
3747};
3748
3749struct MDStringField : public MDFieldImpl<MDString *> {
3750 bool AllowEmpty;
3751 MDStringField(bool AllowEmpty = true)
3752 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3753};
3754
3755struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3756 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3757};
3758
3759struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3760 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3761};
3762
3763struct MDSignedOrMDField : MDEitherFieldImpl<MDSignedField, MDField> {
3764 MDSignedOrMDField(int64_t Default = 0, bool AllowNull = true)
3765 : ImplTy(MDSignedField(Default), MDField(AllowNull)) {}
3766
3767 MDSignedOrMDField(int64_t Default, int64_t Min, int64_t Max,
3768 bool AllowNull = true)
3769 : ImplTy(MDSignedField(Default, Min, Max), MDField(AllowNull)) {}
3770
3771 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3772 bool isMDField() const { return WhatIs == IsTypeB; }
3773 int64_t getMDSignedValue() const {
3774 assert(isMDSignedField() && "Wrong field type")(static_cast <bool> (isMDSignedField() && "Wrong field type"
) ? void (0) : __assert_fail ("isMDSignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3774, __extension__ __PRETTY_FUNCTION__))
;
3775 return A.Val;
3776 }
3777 Metadata *getMDFieldValue() const {
3778 assert(isMDField() && "Wrong field type")(static_cast <bool> (isMDField() && "Wrong field type"
) ? void (0) : __assert_fail ("isMDField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3778, __extension__ __PRETTY_FUNCTION__))
;
3779 return B.Val;
3780 }
3781};
3782
3783struct MDSignedOrUnsignedField
3784 : MDEitherFieldImpl<MDSignedField, MDUnsignedField> {
3785 MDSignedOrUnsignedField() : ImplTy(MDSignedField(0), MDUnsignedField(0)) {}
3786
3787 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3788 bool isMDUnsignedField() const { return WhatIs == IsTypeB; }
3789 int64_t getMDSignedValue() const {
3790 assert(isMDSignedField() && "Wrong field type")(static_cast <bool> (isMDSignedField() && "Wrong field type"
) ? void (0) : __assert_fail ("isMDSignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3790, __extension__ __PRETTY_FUNCTION__))
;
3791 return A.Val;
3792 }
3793 uint64_t getMDUnsignedValue() const {
3794 assert(isMDUnsignedField() && "Wrong field type")(static_cast <bool> (isMDUnsignedField() && "Wrong field type"
) ? void (0) : __assert_fail ("isMDUnsignedField() && \"Wrong field type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3794, __extension__ __PRETTY_FUNCTION__))
;
3795 return B.Val;
3796 }
3797};
3798
3799} // end anonymous namespace
3800
3801namespace llvm {
3802
3803template <>
3804bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3805 MDUnsignedField &Result) {
3806 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3807 return TokError("expected unsigned integer");
3808
3809 auto &U = Lex.getAPSIntVal();
3810 if (U.ugt(Result.Max))
3811 return TokError("value for '" + Name + "' too large, limit is " +
3812 Twine(Result.Max));
3813 Result.assign(U.getZExtValue());
3814 assert(Result.Val <= Result.Max && "Expected value in range")(static_cast <bool> (Result.Val <= Result.Max &&
"Expected value in range") ? void (0) : __assert_fail ("Result.Val <= Result.Max && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3814, __extension__ __PRETTY_FUNCTION__))
;
3815 Lex.Lex();
3816 return false;
3817}
3818
3819template <>
3820bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3821 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3822}
3823template <>
3824bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3825 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3826}
3827
3828template <>
3829bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3830 if (Lex.getKind() == lltok::APSInt)
3831 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3832
3833 if (Lex.getKind() != lltok::DwarfTag)
3834 return TokError("expected DWARF tag");
3835
3836 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3837 if (Tag == dwarf::DW_TAG_invalid)
3838 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3839 assert(Tag <= Result.Max && "Expected valid DWARF tag")(static_cast <bool> (Tag <= Result.Max && "Expected valid DWARF tag"
) ? void (0) : __assert_fail ("Tag <= Result.Max && \"Expected valid DWARF tag\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3839, __extension__ __PRETTY_FUNCTION__))
;
3840
3841 Result.assign(Tag);
3842 Lex.Lex();
3843 return false;
3844}
3845
3846template <>
3847bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3848 DwarfMacinfoTypeField &Result) {
3849 if (Lex.getKind() == lltok::APSInt)
3850 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3851
3852 if (Lex.getKind() != lltok::DwarfMacinfo)
3853 return TokError("expected DWARF macinfo type");
3854
3855 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3856 if (Macinfo == dwarf::DW_MACINFO_invalid)
3857 return TokError(
3858 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3859 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type")(static_cast <bool> (Macinfo <= Result.Max &&
"Expected valid DWARF macinfo type") ? void (0) : __assert_fail
("Macinfo <= Result.Max && \"Expected valid DWARF macinfo type\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3859, __extension__ __PRETTY_FUNCTION__))
;
3860
3861 Result.assign(Macinfo);
3862 Lex.Lex();
3863 return false;
3864}
3865
3866template <>
3867bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3868 DwarfVirtualityField &Result) {
3869 if (Lex.getKind() == lltok::APSInt)
3870 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3871
3872 if (Lex.getKind() != lltok::DwarfVirtuality)
3873 return TokError("expected DWARF virtuality code");
3874
3875 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3876 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3877 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3878 Lex.getStrVal() + "'");
3879 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code")(static_cast <bool> (Virtuality <= Result.Max &&
"Expected valid DWARF virtuality code") ? void (0) : __assert_fail
("Virtuality <= Result.Max && \"Expected valid DWARF virtuality code\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3879, __extension__ __PRETTY_FUNCTION__))
;
3880 Result.assign(Virtuality);
3881 Lex.Lex();
3882 return false;
3883}
3884
3885template <>
3886bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3887 if (Lex.getKind() == lltok::APSInt)
3888 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3889
3890 if (Lex.getKind() != lltok::DwarfLang)
3891 return TokError("expected DWARF language");
3892
3893 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3894 if (!Lang)
3895 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3896 "'");
3897 assert(Lang <= Result.Max && "Expected valid DWARF language")(static_cast <bool> (Lang <= Result.Max && "Expected valid DWARF language"
) ? void (0) : __assert_fail ("Lang <= Result.Max && \"Expected valid DWARF language\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3897, __extension__ __PRETTY_FUNCTION__))
;
3898 Result.assign(Lang);
3899 Lex.Lex();
3900 return false;
3901}
3902
3903template <>
3904bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3905 if (Lex.getKind() == lltok::APSInt)
3906 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3907
3908 if (Lex.getKind() != lltok::DwarfCC)
3909 return TokError("expected DWARF calling convention");
3910
3911 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3912 if (!CC)
3913 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3914 "'");
3915 assert(CC <= Result.Max && "Expected valid DWARF calling convention")(static_cast <bool> (CC <= Result.Max && "Expected valid DWARF calling convention"
) ? void (0) : __assert_fail ("CC <= Result.Max && \"Expected valid DWARF calling convention\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3915, __extension__ __PRETTY_FUNCTION__))
;
3916 Result.assign(CC);
3917 Lex.Lex();
3918 return false;
3919}
3920
3921template <>
3922bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3923 if (Lex.getKind() == lltok::APSInt)
3924 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3925
3926 if (Lex.getKind() != lltok::EmissionKind)
3927 return TokError("expected emission kind");
3928
3929 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3930 if (!Kind)
3931 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3932 "'");
3933 assert(*Kind <= Result.Max && "Expected valid emission kind")(static_cast <bool> (*Kind <= Result.Max && "Expected valid emission kind"
) ? void (0) : __assert_fail ("*Kind <= Result.Max && \"Expected valid emission kind\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3933, __extension__ __PRETTY_FUNCTION__))
;
3934 Result.assign(*Kind);
3935 Lex.Lex();
3936 return false;
3937}
3938
3939template <>
3940bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3941 DwarfAttEncodingField &Result) {
3942 if (Lex.getKind() == lltok::APSInt)
3943 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3944
3945 if (Lex.getKind() != lltok::DwarfAttEncoding)
3946 return TokError("expected DWARF type attribute encoding");
3947
3948 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3949 if (!Encoding)
3950 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3951 Lex.getStrVal() + "'");
3952 assert(Encoding <= Result.Max && "Expected valid DWARF language")(static_cast <bool> (Encoding <= Result.Max &&
"Expected valid DWARF language") ? void (0) : __assert_fail (
"Encoding <= Result.Max && \"Expected valid DWARF language\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 3952, __extension__ __PRETTY_FUNCTION__))
;
3953 Result.assign(Encoding);
3954 Lex.Lex();
3955 return false;
3956}
3957
3958/// DIFlagField
3959/// ::= uint32
3960/// ::= DIFlagVector
3961/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3962template <>
3963bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3964
3965 // Parser for a single flag.
3966 auto parseFlag = [&](DINode::DIFlags &Val) {
3967 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3968 uint32_t TempVal = static_cast<uint32_t>(Val);
3969 bool Res = ParseUInt32(TempVal);
3970 Val = static_cast<DINode::DIFlags>(TempVal);
3971 return Res;
3972 }
3973
3974 if (Lex.getKind() != lltok::DIFlag)
3975 return TokError("expected debug info flag");
3976
3977 Val = DINode::getFlag(Lex.getStrVal());
3978 if (!Val)
3979 return TokError(Twine("invalid debug info flag flag '") +
3980 Lex.getStrVal() + "'");
3981 Lex.Lex();
3982 return false;
3983 };
3984
3985 // Parse the flags and combine them together.
3986 DINode::DIFlags Combined = DINode::FlagZero;
3987 do {
3988 DINode::DIFlags Val;
3989 if (parseFlag(Val))
3990 return true;
3991 Combined |= Val;
3992 } while (EatIfPresent(lltok::bar));
3993
3994 Result.assign(Combined);
3995 return false;
3996}
3997
3998template <>
3999bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4000 MDSignedField &Result) {
4001 if (Lex.getKind() != lltok::APSInt)
4002 return TokError("expected signed integer");
4003
4004 auto &S = Lex.getAPSIntVal();
4005 if (S < Result.Min)
4006 return TokError("value for '" + Name + "' too small, limit is " +
4007 Twine(Result.Min));
4008 if (S > Result.Max)
4009 return TokError("value for '" + Name + "' too large, limit is " +
4010 Twine(Result.Max));
4011 Result.assign(S.getExtValue());
4012 assert(Result.Val >= Result.Min && "Expected value in range")(static_cast <bool> (Result.Val >= Result.Min &&
"Expected value in range") ? void (0) : __assert_fail ("Result.Val >= Result.Min && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4012, __extension__ __PRETTY_FUNCTION__))
;
4013 assert(Result.Val <= Result.Max && "Expected value in range")(static_cast <bool> (Result.Val <= Result.Max &&
"Expected value in range") ? void (0) : __assert_fail ("Result.Val <= Result.Max && \"Expected value in range\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4013, __extension__ __PRETTY_FUNCTION__))
;
4014 Lex.Lex();
4015 return false;
4016}
4017
4018template <>
4019bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
4020 switch (Lex.getKind()) {
4021 default:
4022 return TokError("expected 'true' or 'false'");
4023 case lltok::kw_true:
4024 Result.assign(true);
4025 break;
4026 case lltok::kw_false:
4027 Result.assign(false);
4028 break;
4029 }
4030 Lex.Lex();
4031 return false;
4032}
4033
4034template <>
4035bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
4036 if (Lex.getKind() == lltok::kw_null) {
4037 if (!Result.AllowNull)
4038 return TokError("'" + Name + "' cannot be null");
4039 Lex.Lex();
4040 Result.assign(nullptr);
4041 return false;
4042 }
4043
4044 Metadata *MD;
4045 if (ParseMetadata(MD, nullptr))
4046 return true;
4047
4048 Result.assign(MD);
4049 return false;
4050}
4051
4052template <>
4053bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4054 MDSignedOrMDField &Result) {
4055 // Try to parse a signed int.
4056 if (Lex.getKind() == lltok::APSInt) {
4057 MDSignedField Res = Result.A;
4058 if (!ParseMDField(Loc, Name, Res)) {
4059 Result.assign(Res);
4060 return false;
4061 }
4062 return true;
4063 }
4064
4065 // Otherwise, try to parse as an MDField.
4066 MDField Res = Result.B;
4067 if (!ParseMDField(Loc, Name, Res)) {
4068 Result.assign(Res);
4069 return false;
4070 }
4071
4072 return true;
4073}
4074
4075template <>
4076bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4077 MDSignedOrUnsignedField &Result) {
4078 if (Lex.getKind() != lltok::APSInt)
4079 return false;
4080
4081 if (Lex.getAPSIntVal().isSigned()) {
4082 MDSignedField Res = Result.A;
4083 if (ParseMDField(Loc, Name, Res))
4084 return true;
4085 Result.assign(Res);
4086 return false;
4087 }
4088
4089 MDUnsignedField Res = Result.B;
4090 if (ParseMDField(Loc, Name, Res))
4091 return true;
4092 Result.assign(Res);
4093 return false;
4094}
4095
4096template <>
4097bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
4098 LocTy ValueLoc = Lex.getLoc();
4099 std::string S;
4100 if (ParseStringConstant(S))
4101 return true;
4102
4103 if (!Result.AllowEmpty && S.empty())
4104 return Error(ValueLoc, "'" + Name + "' cannot be empty");
4105
4106 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
4107 return false;
4108}
4109
4110template <>
4111bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
4112 SmallVector<Metadata *, 4> MDs;
4113 if (ParseMDNodeVector(MDs))
4114 return true;
4115
4116 Result.assign(std::move(MDs));
4117 return false;
4118}
4119
4120template <>
4121bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4122 ChecksumKindField &Result) {
4123 Optional<DIFile::ChecksumKind> CSKind =
4124 DIFile::getChecksumKind(Lex.getStrVal());
4125
4126 if (Lex.getKind() != lltok::ChecksumKind || !CSKind)
4127 return TokError(
4128 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
4129
4130 Result.assign(*CSKind);
4131 Lex.Lex();
4132 return false;
4133}
4134
4135} // end namespace llvm
4136
4137template <class ParserTy>
4138bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
4139 do {
4140 if (Lex.getKind() != lltok::LabelStr)
4141 return TokError("expected field label here");
4142
4143 if (parseField())
4144 return true;
4145 } while (EatIfPresent(lltok::comma));
4146
4147 return false;
4148}
4149
4150template <class ParserTy>
4151bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
4152 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")(static_cast <bool> (Lex.getKind() == lltok::MetadataVar
&& "Expected metadata type name") ? void (0) : __assert_fail
("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4152, __extension__ __PRETTY_FUNCTION__))
;
4153 Lex.Lex();
4154
4155 if (ParseToken(lltok::lparen, "expected '(' here"))
4156 return true;
4157 if (Lex.getKind() != lltok::rparen)
4158 if (ParseMDFieldsImplBody(parseField))
4159 return true;
4160
4161 ClosingLoc = Lex.getLoc();
4162 return ParseToken(lltok::rparen, "expected ')' here");
4163}
4164
4165template <class FieldTy>
4166bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
4167 if (Result.Seen)
4168 return TokError("field '" + Name + "' cannot be specified more than once");
4169
4170 LocTy Loc = Lex.getLoc();
4171 Lex.Lex();
4172 return ParseMDField(Loc, Name, Result);
4173}
4174
4175bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
4176 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")(static_cast <bool> (Lex.getKind() == lltok::MetadataVar
&& "Expected metadata type name") ? void (0) : __assert_fail
("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4176, __extension__ __PRETTY_FUNCTION__))
;
4177
4178#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
4179 if (Lex.getStrVal() == #CLASS) \
4180 return Parse##CLASS(N, IsDistinct);
4181#include "llvm/IR/Metadata.def"
4182
4183 return TokError("expected metadata type");
4184}
4185
4186#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
4187#define NOP_FIELD(NAME, TYPE, INIT)
4188#define REQUIRE_FIELD(NAME, TYPE, INIT) \
4189 if (!NAME.Seen) \
4190 return Error(ClosingLoc, "missing required field '" #NAME "'");
4191#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
4192 if (Lex.getStrVal() == #NAME) \
4193 return ParseMDField(#NAME, NAME);
4194#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)
\
4195 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
4196 do { \
4197 LocTy ClosingLoc; \
4198 if (ParseMDFieldsImpl([&]() -> bool { \
4199 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
4200 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
4201 }, ClosingLoc)) \
4202 return true; \
4203 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
4204 } while (false)
4205#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
4206 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
4207
4208/// ParseDILocationFields:
4209/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
4210bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
4211#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4212 OPTIONAL(line, LineField, ); \
4213 OPTIONAL(column, ColumnField, ); \
4214 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4215 OPTIONAL(inlinedAt, MDField, );
4216 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)
;
4217#undef VISIT_MD_FIELDS
4218
4219 Result = GET_OR_DISTINCT((IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val) : DILocation::get (Context, line
.Val, column.Val, scope.Val, inlinedAt.Val))
4220 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val))(IsDistinct ? DILocation::getDistinct (Context, line.Val, column
.Val, scope.Val, inlinedAt.Val) : DILocation::get (Context, line
.Val, column.Val, scope.Val, inlinedAt.Val))
;
4221 return false;
4222}
4223
4224/// ParseGenericDINode:
4225/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
4226bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
4227#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4228 REQUIRED(tag, DwarfTagField, ); \
4229 OPTIONAL(header, MDStringField, ); \
4230 OPTIONAL(operands, MDFieldList, );
4231 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)
;
4232#undef VISIT_MD_FIELDS
4233
4234 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
4235 (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))
;
4236 return false;
4237}
4238
4239/// ParseDISubrange:
4240/// ::= !DISubrange(count: 30, lowerBound: 2)
4241/// ::= !DISubrange(count: !node, lowerBound: 2)
4242bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
4243#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4244 REQUIRED(count, MDSignedOrMDField, (-1, -1, INT64_MAX(9223372036854775807L), false)); \
4245 OPTIONAL(lowerBound, MDSignedField, );
4246 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)
;
4247#undef VISIT_MD_FIELDS
4248
4249 if (count.isMDSignedField())
4250 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
4251 DISubrange, (Context, count.getMDSignedValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
;
4252 else if (count.isMDField())
4253 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
4254 DISubrange, (Context, count.getMDFieldValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
;
4255 else
4256 return true;
4257
4258 return false;
4259}
4260
4261/// ParseDIEnumerator:
4262/// ::= !DIEnumerator(value: 30, isUnsigned: true, name: "SomeKind")
4263bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
4264#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4265 REQUIRED(name, MDStringField, ); \
4266 REQUIRED(value, MDSignedOrUnsignedField, ); \
4267 OPTIONAL(isUnsigned, MDBoolField, (false));
4268 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)
;
4269#undef VISIT_MD_FIELDS
4270
4271 if (isUnsigned.Val && value.isMDSignedField())
4272 return TokError("unsigned enumerator with negative value");
4273
4274 int64_t Value = value.isMDSignedField()
4275 ? value.getMDSignedValue()
4276 : static_cast<int64_t>(value.getMDUnsignedValue());
4277 Result =
4278 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))
;
4279
4280 return false;
4281}
4282
4283/// ParseDIBasicType:
4284/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
4285bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4286#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4287 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4288 OPTIONAL(name, MDStringField, ); \
4289 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4290 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4291 OPTIONAL(encoding, DwarfAttEncodingField, );
4292 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)
;
4293#undef VISIT_MD_FIELDS
4294
4295 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,(IsDistinct ? DIBasicType::getDistinct (Context, tag.Val, name
.Val, size.Val, align.Val, encoding.Val) : DIBasicType::get (
Context, tag.Val, name.Val, size.Val, align.Val, encoding.Val
))
4296 align.Val, encoding.Val))(IsDistinct ? DIBasicType::getDistinct (Context, tag.Val, name
.Val, size.Val, align.Val, encoding.Val) : DIBasicType::get (
Context, tag.Val, name.Val, size.Val, align.Val, encoding.Val
))
;
4297 return false;
4298}
4299
4300/// ParseDIDerivedType:
4301/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4302/// line: 7, scope: !1, baseType: !2, size: 32,
4303/// align: 32, offset: 0, flags: 0, extraData: !3,
4304/// dwarfAddressSpace: 3)
4305bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4306#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4307 REQUIRED(tag, DwarfTagField, ); \
4308 OPTIONAL(name, MDStringField, ); \
4309 OPTIONAL(file, MDField, ); \
4310 OPTIONAL(line, LineField, ); \
4311 OPTIONAL(scope, MDField, ); \
4312 REQUIRED(baseType, MDField, ); \
4313 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4314 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4315 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4316 OPTIONAL(flags, DIFlagField, ); \
4317 OPTIONAL(extraData, MDField, ); \
4318 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
4319 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)
;
4320#undef VISIT_MD_FIELDS
4321
4322 Optional<unsigned> DWARFAddressSpace;
4323 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4324 DWARFAddressSpace = dwarfAddressSpace.Val;
4325
4326 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))
4327 (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))
4328 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))
4329 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))
4330 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))
;
4331 return false;
4332}
4333
4334bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4335#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4336 REQUIRED(tag, DwarfTagField, ); \
4337 OPTIONAL(name, MDStringField, ); \
4338 OPTIONAL(file, MDField, ); \
4339 OPTIONAL(line, LineField, ); \
4340 OPTIONAL(scope, MDField, ); \
4341 OPTIONAL(baseType, MDField, ); \
4342 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4343 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4344 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4345 OPTIONAL(flags, DIFlagField, ); \
4346 OPTIONAL(elements, MDField, ); \
4347 OPTIONAL(runtimeLang, DwarfLangField, ); \
4348 OPTIONAL(vtableHolder, MDField, ); \
4349 OPTIONAL(templateParams, MDField, ); \
4350 OPTIONAL(identifier, MDStringField, ); \
4351 OPTIONAL(discriminator, MDField, );
4352 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)
;
4353#undef VISIT_MD_FIELDS
4354
4355 // If this has an identifier try to build an ODR type.
4356 if (identifier.Val)
4357 if (auto *CT = DICompositeType::buildODRType(
4358 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4359 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4360 elements.Val, runtimeLang.Val, vtableHolder.Val,
4361 templateParams.Val, discriminator.Val)) {
4362 Result = CT;
4363 return false;
4364 }
4365
4366 // Create a new node, and save it in the context if it belongs in the type
4367 // map.
4368 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))
4369 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))
4370 (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))
4371 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))
4372 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))
4373 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))
;
4374 return false;
4375}
4376
4377bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4378#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4379 OPTIONAL(flags, DIFlagField, ); \
4380 OPTIONAL(cc, DwarfCCField, ); \
4381 REQUIRED(types, MDField, );
4382 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)
;
4383#undef VISIT_MD_FIELDS
4384
4385 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4386 (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))
;
4387 return false;
4388}
4389
4390/// ParseDIFileType:
4391/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir",
4392/// checksumkind: CSK_MD5,
4393/// checksum: "000102030405060708090a0b0c0d0e0f",
4394/// source: "source file contents")
4395bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4396 // The default constructed value for checksumkind is required, but will never
4397 // be used, as the parser checks if the field was actually Seen before using
4398 // the Val.
4399#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4400 REQUIRED(filename, MDStringField, ); \
4401 REQUIRED(directory, MDStringField, ); \
4402 OPTIONAL(checksumkind, ChecksumKindField, (DIFile::CSK_MD5)); \
4403 OPTIONAL(checksum, MDStringField, ); \
4404 OPTIONAL(source, MDStringField, );
4405 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)
;
4406#undef VISIT_MD_FIELDS
4407
4408 Optional<DIFile::ChecksumInfo<MDString *>> OptChecksum;
4409 if (checksumkind.Seen && checksum.Seen)
4410 OptChecksum.emplace(checksumkind.Val, checksum.Val);
4411 else if (checksumkind.Seen || checksum.Seen)
4412 return Lex.Error("'checksumkind' and 'checksum' must be provided together");
4413
4414 Optional<MDString *> OptSource;
4415 if (source.Seen)
4416 OptSource = source.Val;
4417 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))
4418 OptChecksum, OptSource))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
;
4419 return false;
4420}
4421
4422/// ParseDICompileUnit:
4423/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4424/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4425/// splitDebugFilename: "abc.debug",
4426/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4427/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4428bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4429 if (!IsDistinct)
4430 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4431
4432#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4433 REQUIRED(language, DwarfLangField, ); \
4434 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4435 OPTIONAL(producer, MDStringField, ); \
4436 OPTIONAL(isOptimized, MDBoolField, ); \
4437 OPTIONAL(flags, MDStringField, ); \
4438 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4439 OPTIONAL(splitDebugFilename, MDStringField, ); \
4440 OPTIONAL(emissionKind, EmissionKindField, ); \
4441 OPTIONAL(enums, MDField, ); \
4442 OPTIONAL(retainedTypes, MDField, ); \
4443 OPTIONAL(globals, MDField, ); \
4444 OPTIONAL(imports, MDField, ); \
4445 OPTIONAL(macros, MDField, ); \
4446 OPTIONAL(dwoId, MDUnsignedField, ); \
4447 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4448 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4449 OPTIONAL(gnuPubnames, MDBoolField, = false);
4450 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)
;
4451#undef VISIT_MD_FIELDS
4452
4453 Result = DICompileUnit::getDistinct(
4454 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4455 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4456 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4457 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4458 return false;
4459}
4460
4461/// ParseDISubprogram:
4462/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4463/// file: !1, line: 7, type: !2, isLocal: false,
4464/// isDefinition: true, scopeLine: 8, containingType: !3,
4465/// virtuality: DW_VIRTUALTIY_pure_virtual,
4466/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4467/// isOptimized: false, templateParams: !4, declaration: !5,
4468/// retainedNodes: !6, thrownTypes: !7)
4469bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4470 auto Loc = Lex.getLoc();
4471#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4472 OPTIONAL(scope, MDField, ); \
4473 OPTIONAL(name, MDStringField, ); \
4474 OPTIONAL(linkageName, MDStringField, ); \
4475 OPTIONAL(file, MDField, ); \
4476 OPTIONAL(line, LineField, ); \
4477 OPTIONAL(type, MDField, ); \
4478 OPTIONAL(isLocal, MDBoolField, ); \
4479 OPTIONAL(isDefinition, MDBoolField, (true)); \
4480 OPTIONAL(scopeLine, LineField, ); \
4481 OPTIONAL(containingType, MDField, ); \
4482 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4483 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4484 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4485 OPTIONAL(flags, DIFlagField, ); \
4486 OPTIONAL(isOptimized, MDBoolField, ); \
4487 OPTIONAL(unit, MDField, ); \
4488 OPTIONAL(templateParams, MDField, ); \
4489 OPTIONAL(declaration, MDField, ); \
4490 OPTIONAL(retainedNodes, MDField, ); \
4491 OPTIONAL(thrownTypes, MDField, );
4492 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)
;
4493#undef VISIT_MD_FIELDS
4494
4495 if (isDefinition.Val && !IsDistinct)
4496 return Lex.Error(
4497 Loc,
4498 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4499
4500 Result = GET_OR_DISTINCT((IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4501 DISubprogram,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4502 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4503 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4504 containingType.Val, virtuality.Val, virtualIndex.Val, thisAdjustment.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4505 flags.Val, isOptimized.Val, unit.Val, templateParams.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
4506 declaration.Val, retainedNodes.Val, thrownTypes.Val))(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, retainedNodes
.Val, thrownTypes.Val))
;
4507 return false;
4508}
4509
4510/// ParseDILexicalBlock:
4511/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4512bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4513#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4514 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4515 OPTIONAL(file, MDField, ); \
4516 OPTIONAL(line, LineField, ); \
4517 OPTIONAL(column, ColumnField, );
4518 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)
;
4519#undef VISIT_MD_FIELDS
4520
4521 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))
4522 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))
;
4523 return false;
4524}
4525
4526/// ParseDILexicalBlockFile:
4527/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4528bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4529#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4530 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4531 OPTIONAL(file, MDField, ); \
4532 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4533 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)
;
4534#undef VISIT_MD_FIELDS
4535
4536 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4537 (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))
;
4538 return false;
4539}
4540
4541/// ParseDINamespace:
4542/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4543bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4544#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4545 REQUIRED(scope, MDField, ); \
4546 OPTIONAL(name, MDStringField, ); \
4547 OPTIONAL(exportSymbols, MDBoolField, );
4548 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)
;
4549#undef VISIT_MD_FIELDS
4550
4551 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4552 (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))
;
4553 return false;
4554}
4555
4556/// ParseDIMacro:
4557/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4558bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4559#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4560 REQUIRED(type, DwarfMacinfoTypeField, ); \
4561 OPTIONAL(line, LineField, ); \
4562 REQUIRED(name, MDStringField, ); \
4563 OPTIONAL(value, MDStringField, );
4564 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)
;
4565#undef VISIT_MD_FIELDS
4566
4567 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))
4568 (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))
;
4569 return false;
4570}
4571
4572/// ParseDIMacroFile:
4573/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4574bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4575#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4576 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4577 OPTIONAL(line, LineField, ); \
4578 REQUIRED(file, MDField, ); \
4579 OPTIONAL(nodes, MDField, );
4580 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)
;
4581#undef VISIT_MD_FIELDS
4582
4583 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))
4584 (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))
;
4585 return false;
4586}
4587
4588/// ParseDIModule:
4589/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4590/// includePath: "/usr/include", isysroot: "/")
4591bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4592#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4593 REQUIRED(scope, MDField, ); \
4594 REQUIRED(name, MDStringField, ); \
4595 OPTIONAL(configMacros, MDStringField, ); \
4596 OPTIONAL(includePath, MDStringField, ); \
4597 OPTIONAL(isysroot, MDStringField, );
4598 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)
;
4599#undef VISIT_MD_FIELDS
4600
4601 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))
4602 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))
;
4603 return false;
4604}
4605
4606/// ParseDITemplateTypeParameter:
4607/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4608bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4609#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4610 OPTIONAL(name, MDStringField, ); \
4611 REQUIRED(type, MDField, );
4612 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)
;
4613#undef VISIT_MD_FIELDS
4614
4615 Result =
4616 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4617 return false;
4618}
4619
4620/// ParseDITemplateValueParameter:
4621/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4622/// name: "V", type: !1, value: i32 7)
4623bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4624#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4625 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4626 OPTIONAL(name, MDStringField, ); \
4627 OPTIONAL(type, MDField, ); \
4628 REQUIRED(value, MDField, );
4629 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)
;
4630#undef VISIT_MD_FIELDS
4631
4632 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))
4633 (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))
;
4634 return false;
4635}
4636
4637/// ParseDIGlobalVariable:
4638/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4639/// file: !1, line: 7, type: !2, isLocal: false,
4640/// isDefinition: true, declaration: !3, align: 8)
4641bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4642#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4643 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4644 OPTIONAL(scope, MDField, ); \
4645 OPTIONAL(linkageName, MDStringField, ); \
4646 OPTIONAL(file, MDField, ); \
4647 OPTIONAL(line, LineField, ); \
4648 OPTIONAL(type, MDField, ); \
4649 OPTIONAL(isLocal, MDBoolField, ); \
4650 OPTIONAL(isDefinition, MDBoolField, (true)); \
4651 OPTIONAL(declaration, MDField, ); \
4652 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4653 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)
;
4654#undef VISIT_MD_FIELDS
4655
4656 Result = GET_OR_DISTINCT(DIGlobalVariable,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4657 (Context, scope.Val, name.Val, linkageName.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4658 file.Val, line.Val, type.Val, isLocal.Val,(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
4659 isDefinition.Val, declaration.Val, align.Val))(IsDistinct ? DIGlobalVariable::getDistinct (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, declaration.Val, align.Val) : DIGlobalVariable
::get (Context, scope.Val, name.Val, linkageName.Val, file.Val
, line.Val, type.Val, isLocal.Val, isDefinition.Val, declaration
.Val, align.Val))
;
4660 return false;
4661}
4662
4663/// ParseDILocalVariable:
4664/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4665/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4666/// align: 8)
4667/// ::= !DILocalVariable(scope: !0, name: "foo",
4668/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4669/// align: 8)
4670bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4671#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4672 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4673 OPTIONAL(name, MDStringField, ); \
4674 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4675 OPTIONAL(file, MDField, ); \
4676 OPTIONAL(line, LineField, ); \
4677 OPTIONAL(type, MDField, ); \
4678 OPTIONAL(flags, DIFlagField, ); \
4679 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4680 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)
;
4681#undef VISIT_MD_FIELDS
4682
4683 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))
4684 (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))
4685 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))
;
4686 return false;
4687}
4688
4689/// ParseDILabel:
4690/// ::= !DILabel(scope: !0, name: "foo", file: !1, line: 7)
4691bool LLParser::ParseDILabel(MDNode *&Result, bool IsDistinct) {
4692#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4693 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4694 REQUIRED(name, MDStringField, ); \
4695 REQUIRED(file, MDField, ); \
4696 REQUIRED(line, LineField, );
4697 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)
;
4698#undef VISIT_MD_FIELDS
4699
4700 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))
4701 (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))
;
4702 return false;
4703}
4704
4705/// ParseDIExpression:
4706/// ::= !DIExpression(0, 7, -1)
4707bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4708 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name")(static_cast <bool> (Lex.getKind() == lltok::MetadataVar
&& "Expected metadata type name") ? void (0) : __assert_fail
("Lex.getKind() == lltok::MetadataVar && \"Expected metadata type name\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4708, __extension__ __PRETTY_FUNCTION__))
;
4709 Lex.Lex();
4710
4711 if (ParseToken(lltok::lparen, "expected '(' here"))
4712 return true;
4713
4714 SmallVector<uint64_t, 8> Elements;
4715 if (Lex.getKind() != lltok::rparen)
4716 do {
4717 if (Lex.getKind() == lltok::DwarfOp) {
4718 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4719 Lex.Lex();
4720 Elements.push_back(Op);
4721 continue;
4722 }
4723 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4724 }
4725
4726 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4727 return TokError("expected unsigned integer");
4728
4729 auto &U = Lex.getAPSIntVal();
4730 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4731 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4732 Elements.push_back(U.getZExtValue());
4733 Lex.Lex();
4734 } while (EatIfPresent(lltok::comma));
4735
4736 if (ParseToken(lltok::rparen, "expected ')' here"))
4737 return true;
4738
4739 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4740 return false;
4741}
4742
4743/// ParseDIGlobalVariableExpression:
4744/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4745bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4746 bool IsDistinct) {
4747#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4748 REQUIRED(var, MDField, ); \
4749 REQUIRED(expr, MDField, );
4750 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)
;
4751#undef VISIT_MD_FIELDS
4752
4753 Result =
4754 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4755 return false;
4756}
4757
4758/// ParseDIObjCProperty:
4759/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4760/// getter: "getFoo", attributes: 7, type: !2)
4761bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4762#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4763 OPTIONAL(name, MDStringField, ); \
4764 OPTIONAL(file, MDField, ); \
4765 OPTIONAL(line, LineField, ); \
4766 OPTIONAL(setter, MDStringField, ); \
4767 OPTIONAL(getter, MDStringField, ); \
4768 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4769 OPTIONAL(type, MDField, );
4770 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)
;
4771#undef VISIT_MD_FIELDS
4772
4773 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))
4774 (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))
4775 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))
;
4776 return false;
4777}
4778
4779/// ParseDIImportedEntity:
4780/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4781/// line: 7, name: "foo")
4782bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4783#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4784 REQUIRED(tag, DwarfTagField, ); \
4785 REQUIRED(scope, MDField, ); \
4786 OPTIONAL(entity, MDField, ); \
4787 OPTIONAL(file, MDField, ); \
4788 OPTIONAL(line, LineField, ); \
4789 OPTIONAL(name, MDStringField, );
4790 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)
;
4791#undef VISIT_MD_FIELDS
4792
4793 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))
4794 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))
4795 (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))
;
4796 return false;
4797}
4798
4799#undef PARSE_MD_FIELD
4800#undef NOP_FIELD
4801#undef REQUIRE_FIELD
4802#undef DECLARE_FIELD
4803
4804/// ParseMetadataAsValue
4805/// ::= metadata i32 %local
4806/// ::= metadata i32 @global
4807/// ::= metadata i32 7
4808/// ::= metadata !0
4809/// ::= metadata !{...}
4810/// ::= metadata !"string"
4811bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4812 // Note: the type 'metadata' has already been parsed.
4813 Metadata *MD;
4814 if (ParseMetadata(MD, &PFS))
4815 return true;
4816
4817 V = MetadataAsValue::get(Context, MD);
4818 return false;
4819}
4820
4821/// ParseValueAsMetadata
4822/// ::= i32 %local
4823/// ::= i32 @global
4824/// ::= i32 7
4825bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4826 PerFunctionState *PFS) {
4827 Type *Ty;
4828 LocTy Loc;
4829 if (ParseType(Ty, TypeMsg, Loc))
4830 return true;
4831 if (Ty->isMetadataTy())
4832 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4833
4834 Value *V;
4835 if (ParseValue(Ty, V, PFS))
4836 return true;
4837
4838 MD = ValueAsMetadata::get(V);
4839 return false;
4840}
4841
4842/// ParseMetadata
4843/// ::= i32 %local
4844/// ::= i32 @global
4845/// ::= i32 7
4846/// ::= !42
4847/// ::= !{...}
4848/// ::= !"string"
4849/// ::= !DILocation(...)
4850bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4851 if (Lex.getKind() == lltok::MetadataVar) {
4852 MDNode *N;
4853 if (ParseSpecializedMDNode(N))
4854 return true;
4855 MD = N;
4856 return false;
4857 }
4858
4859 // ValueAsMetadata:
4860 // <type> <value>
4861 if (Lex.getKind() != lltok::exclaim)
4862 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4863
4864 // '!'.
4865 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here")(static_cast <bool> (Lex.getKind() == lltok::exclaim &&
"Expected '!' here") ? void (0) : __assert_fail ("Lex.getKind() == lltok::exclaim && \"Expected '!' here\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 4865, __extension__ __PRETTY_FUNCTION__))
;
4866 Lex.Lex();
4867
4868 // MDString:
4869 // ::= '!' STRINGCONSTANT
4870 if (Lex.getKind() == lltok::StringConstant) {
4871 MDString *S;
4872 if (ParseMDString(S))
4873 return true;
4874 MD = S;
4875 return false;
4876 }
4877
4878 // MDNode:
4879 // !{ ... }
4880 // !7
4881 MDNode *N;
4882 if (ParseMDNodeTail(N))
4883 return true;
4884 MD = N;
4885 return false;
4886}
4887
4888//===----------------------------------------------------------------------===//
4889// Function Parsing.
4890//===----------------------------------------------------------------------===//
4891
4892bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4893 PerFunctionState *PFS, bool IsCall) {
4894 if (Ty->isFunctionTy())
4895 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4896
4897 switch (ID.Kind) {
4898 case ValID::t_LocalID:
4899 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4900 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, IsCall);
4901 return V == nullptr;
4902 case ValID::t_LocalName:
4903 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4904 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, IsCall);
4905 return V == nullptr;
4906 case ValID::t_InlineAsm: {
4907 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4908 return Error(ID.Loc, "invalid type for inline asm constraint string");
4909 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4910 (ID.UIntVal >> 1) & 1,
4911 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4912 return false;
4913 }
4914 case ValID::t_GlobalName:
4915 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4916 return V == nullptr;
4917 case ValID::t_GlobalID:
4918 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4919 return V == nullptr;
4920 case ValID::t_APSInt:
4921 if (!Ty->isIntegerTy())
4922 return Error(ID.Loc, "integer constant must have integer type");
4923 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4924 V = ConstantInt::get(Context, ID.APSIntVal);
4925 return false;
4926 case ValID::t_APFloat:
4927 if (!Ty->isFloatingPointTy() ||
4928 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4929 return Error(ID.Loc, "floating point constant invalid for type");
4930
4931 // The lexer has no type info, so builds all half, float, and double FP
4932 // constants as double. Fix this here. Long double does not need this.
4933 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4934 bool Ignored;
4935 if (Ty->isHalfTy())
4936 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4937 &Ignored);
4938 else if (Ty->isFloatTy())
4939 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4940 &Ignored);
4941 }
4942 V = ConstantFP::get(Context, ID.APFloatVal);
4943
4944 if (V->getType() != Ty)
4945 return Error(ID.Loc, "floating point constant does not have type '" +
4946 getTypeString(Ty) + "'");
4947
4948 return false;
4949 case ValID::t_Null:
4950 if (!Ty->isPointerTy())
4951 return Error(ID.Loc, "null must be a pointer type");
4952 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4953 return false;
4954 case ValID::t_Undef:
4955 // FIXME: LabelTy should not be a first-class type.
4956 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4957 return Error(ID.Loc, "invalid type for undef constant");
4958 V = UndefValue::get(Ty);
4959 return false;
4960 case ValID::t_EmptyArray:
4961 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4962 return Error(ID.Loc, "invalid empty array initializer");
4963 V = UndefValue::get(Ty);
4964 return false;
4965 case ValID::t_Zero:
4966 // FIXME: LabelTy should not be a first-class type.
4967 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4968 return Error(ID.Loc, "invalid type for null constant");
4969 V = Constant::getNullValue(Ty);
4970 return false;
4971 case ValID::t_None:
4972 if (!Ty->isTokenTy())
4973 return Error(ID.Loc, "invalid type for none constant");
4974 V = Constant::getNullValue(Ty);
4975 return false;
4976 case ValID::t_Constant:
4977 if (ID.ConstantVal->getType() != Ty)
4978 return Error(ID.Loc, "constant expression type mismatch");
4979
4980 V = ID.ConstantVal;
4981 return false;
4982 case ValID::t_ConstantStruct:
4983 case ValID::t_PackedConstantStruct:
4984 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4985 if (ST->getNumElements() != ID.UIntVal)
4986 return Error(ID.Loc,
4987 "initializer with struct type has wrong # elements");
4988 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4989 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4990
4991 // Verify that the elements are compatible with the structtype.
4992 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4993 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4994 return Error(ID.Loc, "element " + Twine(i) +
4995 " of struct initializer doesn't match struct element type");
4996
4997 V = ConstantStruct::get(
4998 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4999 } else
5000 return Error(ID.Loc, "constant expression type mismatch");
5001 return false;
5002 }
5003 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 5003)
;
5004}
5005
5006bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
5007 C = nullptr;
5008 ValID ID;
5009 auto Loc = Lex.getLoc();
5010 if (ParseValID(ID, /*PFS=*/nullptr))
5011 return true;
5012 switch (ID.Kind) {
5013 case ValID::t_APSInt:
5014 case ValID::t_APFloat:
5015 case ValID::t_Undef:
5016 case ValID::t_Constant:
5017 case ValID::t_ConstantStruct:
5018 case ValID::t_PackedConstantStruct: {
5019 Value *V;
5020 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr, /*IsCall=*/false))
5021 return true;
5022 assert(isa<Constant>(V) && "Expected a constant value")(static_cast <bool> (isa<Constant>(V) && "Expected a constant value"
) ? void (0) : __assert_fail ("isa<Constant>(V) && \"Expected a constant value\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 5022, __extension__ __PRETTY_FUNCTION__))
;
5023 C = cast<Constant>(V);
5024 return false;
5025 }
5026 case ValID::t_Null:
5027 C = Constant::getNullValue(Ty);
5028 return false;
5029 default:
5030 return Error(Loc, "expected a constant value");
5031 }
5032}
5033
5034bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
5035 V = nullptr;
5036 ValID ID;
5037 return ParseValID(ID, PFS) ||
5038 ConvertValIDToValue(Ty, ID, V, PFS, /*IsCall=*/false);
5039}
5040
5041bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
5042 Type *Ty = nullptr;
5043 return ParseType(Ty) ||
5044 ParseValue(Ty, V, PFS);
5045}
5046
5047bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
5048 PerFunctionState &PFS) {
5049 Value *V;
5050 Loc = Lex.getLoc();
5051 if (ParseTypeAndValue(V, PFS)) return true;
5052 if (!isa<BasicBlock>(V))
5053 return Error(Loc, "expected a basic block");
5054 BB = cast<BasicBlock>(V);
5055 return false;
5056}
5057
5058/// FunctionHeader
5059/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
5060/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
5061/// '(' ArgList ')' OptFuncAttrs OptSection OptionalAlign OptGC
5062/// OptionalPrefix OptionalPrologue OptPersonalityFn
5063bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
5064 // Parse the linkage.
5065 LocTy LinkageLoc = Lex.getLoc();
5066 unsigned Linkage;
5067 unsigned Visibility;
5068 unsigned DLLStorageClass;
5069 bool DSOLocal;
5070 AttrBuilder RetAttrs;
5071 unsigned CC;
5072 bool HasLinkage;
5073 Type *RetType = nullptr;
5074 LocTy RetTypeLoc = Lex.getLoc();
5075 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
14
Taking false branch
5076 DSOLocal) ||
5077 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5078 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
13
Assuming the condition is false
5079 return true;
5080
5081 // Verify that the linkage is ok.
5082 switch ((GlobalValue::LinkageTypes)Linkage) {
15
Control jumps to 'case ExternalWeakLinkage:' at line 5085
5083 case GlobalValue::ExternalLinkage:
5084 break; // always ok.
5085 case GlobalValue::ExternalWeakLinkage:
5086 if (isDefine)
16
Taking false branch
5087 return Error(LinkageLoc, "invalid linkage for function definition");
5088 break;
17
Execution continues on line 5104
5089 case GlobalValue::PrivateLinkage:
5090 case GlobalValue::InternalLinkage:
5091 case GlobalValue::AvailableExternallyLinkage:
5092 case GlobalValue::LinkOnceAnyLinkage:
5093 case GlobalValue::LinkOnceODRLinkage:
5094 case GlobalValue::WeakAnyLinkage:
5095 case GlobalValue::WeakODRLinkage:
5096 if (!isDefine)
5097 return Error(LinkageLoc, "invalid linkage for function declaration");
5098 break;
5099 case GlobalValue::AppendingLinkage:
5100 case GlobalValue::CommonLinkage:
5101 return Error(LinkageLoc, "invalid function linkage type");
5102 }
5103
5104 if (!isValidVisibilityForLinkage(Visibility, Linkage))
18
Taking false branch
5105 return Error(LinkageLoc,
5106 "symbol with local linkage must have default visibility");
5107
5108 if (!FunctionType::isValidReturnType(RetType))
19
Assuming the condition is true
20
Taking true branch
5109 return Error(RetTypeLoc, "invalid function return type");
5110
5111 LocTy NameLoc = Lex.getLoc();
5112
5113 std::string FunctionName;
5114 if (Lex.getKind() == lltok::GlobalVar) {
5115 FunctionName = Lex.getStrVal();
5116 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
5117 unsigned NameID = Lex.getUIntVal();
5118
5119 if (NameID != NumberedVals.size())
5120 return TokError("function expected to be numbered '%" +
5121 Twine(NumberedVals.size()) + "'");
5122 } else {
5123 return TokError("expected function name");
5124 }
5125
5126 Lex.Lex();
5127
5128 if (Lex.getKind() != lltok::lparen)
5129 return TokError("expected '(' in function argument list");
5130
5131 SmallVector<ArgInfo, 8> ArgList;
5132 bool isVarArg;
5133 AttrBuilder FuncAttrs;
5134 std::vector<unsigned> FwdRefAttrGrps;
5135 LocTy BuiltinLoc;
5136 std::string Section;
5137 unsigned Alignment;
5138 std::string GC;
5139 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
5140 Constant *Prefix = nullptr;
5141 Constant *Prologue = nullptr;
5142 Constant *PersonalityFn = nullptr;
5143 Comdat *C;
5144
5145 if (ParseArgumentList(ArgList, isVarArg) ||
5146 ParseOptionalUnnamedAddr(UnnamedAddr) ||
5147 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
5148 BuiltinLoc) ||
5149 (EatIfPresent(lltok::kw_section) &&
5150 ParseStringConstant(Section)) ||
5151 parseOptionalComdat(FunctionName, C) ||
5152 ParseOptionalAlignment(Alignment) ||
5153 (EatIfPresent(lltok::kw_gc) &&
5154 ParseStringConstant(GC)) ||
5155 (EatIfPresent(lltok::kw_prefix) &&
5156 ParseGlobalTypeAndValue(Prefix)) ||
5157 (EatIfPresent(lltok::kw_prologue) &&
5158 ParseGlobalTypeAndValue(Prologue)) ||
5159 (EatIfPresent(lltok::kw_personality) &&
5160 ParseGlobalTypeAndValue(PersonalityFn)))
5161 return true;
5162
5163 if (FuncAttrs.contains(Attribute::Builtin))
5164 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
5165
5166 // If the alignment was parsed as an attribute, move to the alignment field.
5167 if (FuncAttrs.hasAlignmentAttr()) {
5168 Alignment = FuncAttrs.getAlignment();
5169 FuncAttrs.removeAttribute(Attribute::Alignment);
5170 }
5171
5172 // Okay, if we got here, the function is syntactically valid. Convert types
5173 // and do semantic checks.
5174 std::vector<Type*> ParamTypeList;
5175 SmallVector<AttributeSet, 8> Attrs;
5176
5177 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5178 ParamTypeList.push_back(ArgList[i].Ty);
5179 Attrs.push_back(ArgList[i].Attrs);
5180 }
5181
5182 AttributeList PAL =
5183 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
5184 AttributeSet::get(Context, RetAttrs), Attrs);
5185
5186 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
5187 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
5188
5189 FunctionType *FT =
5190 FunctionType::get(RetType, ParamTypeList, isVarArg);
5191 PointerType *PFT = PointerType::getUnqual(FT);
5192
5193 Fn = nullptr;
5194 if (!FunctionName.empty()) {
5195 // If this was a definition of a forward reference, remove the definition
5196 // from the forward reference table and fill in the forward ref.
5197 auto FRVI = ForwardRefVals.find(FunctionName);
5198 if (FRVI != ForwardRefVals.end()) {
5199 Fn = M->getFunction(FunctionName);
5200 if (!Fn)
5201 return Error(FRVI->second.second, "invalid forward reference to "
5202 "function as global value!");
5203 if (Fn->getType() != PFT)
5204 return Error(FRVI->second.second, "invalid forward reference to "
5205 "function '" + FunctionName + "' with wrong type!");
5206
5207 ForwardRefVals.erase(FRVI);
5208 } else if ((Fn = M->getFunction(FunctionName))) {
5209 // Reject redefinitions.
5210 return Error(NameLoc, "invalid redefinition of function '" +
5211 FunctionName + "'");
5212 } else if (M->getNamedValue(FunctionName)) {
5213 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
5214 }
5215
5216 } else {
5217 // If this is a definition of a forward referenced function, make sure the
5218 // types agree.
5219 auto I = ForwardRefValIDs.find(NumberedVals.size());
5220 if (I != ForwardRefValIDs.end()) {
5221 Fn = cast<Function>(I->second.first);
5222 if (Fn->getType() != PFT)
5223 return Error(NameLoc, "type of definition and forward reference of '@" +
5224 Twine(NumberedVals.size()) + "' disagree");
5225 ForwardRefValIDs.erase(I);
5226 }
5227 }
5228
5229 if (!Fn)
5230 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
5231 else // Move the forward-reference to the correct spot in the module.
5232 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
5233
5234 if (FunctionName.empty())
5235 NumberedVals.push_back(Fn);
5236
5237 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
5238 maybeSetDSOLocal(DSOLocal, *Fn);
5239 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
5240 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
5241 Fn->setCallingConv(CC);
5242 Fn->setAttributes(PAL);
5243 Fn->setUnnamedAddr(UnnamedAddr);
5244 Fn->setAlignment(Alignment);
5245 Fn->setSection(Section);
5246 Fn->setComdat(C);
5247 Fn->setPersonalityFn(PersonalityFn);
5248 if (!GC.empty()) Fn->setGC(GC);
5249 Fn->setPrefixData(Prefix);
5250 Fn->setPrologueData(Prologue);
5251 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
5252
5253 // Add all of the arguments we parsed to the function.
5254 Function::arg_iterator ArgIt = Fn->arg_begin();
5255 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
5256 // If the argument has a name, insert it into the argument symbol table.
5257 if (ArgList[i].Name.empty()) continue;
5258
5259 // Set the name, if it conflicted, it will be auto-renamed.
5260 ArgIt->setName(ArgList[i].Name);
5261
5262 if (ArgIt->getName() != ArgList[i].Name)
5263 return Error(ArgList[i].Loc, "redefinition of argument '%" +
5264 ArgList[i].Name + "'");
5265 }
5266
5267 if (isDefine)
5268 return false;
5269
5270 // Check the declaration has no block address forward references.
5271 ValID ID;
5272 if (FunctionName.empty()) {
5273 ID.Kind = ValID::t_GlobalID;
5274 ID.UIntVal = NumberedVals.size() - 1;
5275 } else {
5276 ID.Kind = ValID::t_GlobalName;
5277 ID.StrVal = FunctionName;
5278 }
5279 auto Blocks = ForwardRefBlockAddresses.find(ID);
5280 if (Blocks != ForwardRefBlockAddresses.end())
5281 return Error(Blocks->first.Loc,
5282 "cannot take blockaddress inside a declaration");
5283 return false;
5284}
21
Returning without writing to 'Fn'
5285
5286bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
5287 ValID ID;
5288 if (FunctionNumber == -1) {
5289 ID.Kind = ValID::t_GlobalName;
5290 ID.StrVal = F.getName();
5291 } else {
5292 ID.Kind = ValID::t_GlobalID;
5293 ID.UIntVal = FunctionNumber;
5294 }
5295
5296 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
5297 if (Blocks == P.ForwardRefBlockAddresses.end())
5298 return false;
5299
5300 for (const auto &I : Blocks->second) {
5301 const ValID &BBID = I.first;
5302 GlobalValue *GV = I.second;
5303
5304 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&(static_cast <bool> ((BBID.Kind == ValID::t_LocalID || BBID
.Kind == ValID::t_LocalName) && "Expected local id or name"
) ? void (0) : __assert_fail ("(BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) && \"Expected local id or name\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 5305, __extension__ __PRETTY_FUNCTION__))
5305 "Expected local id or name")(static_cast <bool> ((BBID.Kind == ValID::t_LocalID || BBID
.Kind == ValID::t_LocalName) && "Expected local id or name"
) ? void (0) : __assert_fail ("(BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) && \"Expected local id or name\""
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 5305, __extension__ __PRETTY_FUNCTION__))
;
5306 BasicBlock *BB;
5307 if (BBID.Kind == ValID::t_LocalName)
5308 BB = GetBB(BBID.StrVal, BBID.Loc);
5309 else
5310 BB = GetBB(BBID.UIntVal, BBID.Loc);
5311 if (!BB)
5312 return P.Error(BBID.Loc, "referenced value is not a basic block");
5313
5314 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
5315 GV->eraseFromParent();
5316 }
5317
5318 P.ForwardRefBlockAddresses.erase(Blocks);
5319 return false;
5320}
5321
5322/// ParseFunctionBody
5323/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5324bool LLParser::ParseFunctionBody(Function &Fn) {
5325 if (Lex.getKind() != lltok::lbrace)
5326 return TokError("expected '{' in function body");
5327 Lex.Lex(); // eat the {.
5328
5329 int FunctionNumber = -1;
5330 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5331
5332 PerFunctionState PFS(*this, Fn, FunctionNumber);
5333
5334 // Resolve block addresses and allow basic blocks to be forward-declared
5335 // within this function.
5336 if (PFS.resolveForwardRefBlockAddresses())
5337 return true;
5338 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5339
5340 // We need at least one basic block.
5341 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5342 return TokError("function body requires at least one basic block");
5343
5344 while (Lex.getKind() != lltok::rbrace &&
5345 Lex.getKind() != lltok::kw_uselistorder)
5346 if (ParseBasicBlock(PFS)) return true;
5347
5348 while (Lex.getKind() != lltok::rbrace)
5349 if (ParseUseListOrder(&PFS))
5350 return true;
5351
5352 // Eat the }.
5353 Lex.Lex();
5354
5355 // Verify function is ok.
5356 return PFS.FinishFunction();
5357}
5358
5359/// ParseBasicBlock
5360/// ::= LabelStr? Instruction*
5361bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5362 // If this basic block starts out with a name, remember it.
5363 std::string Name;
5364 LocTy NameLoc = Lex.getLoc();
5365 if (Lex.getKind() == lltok::LabelStr) {
5366 Name = Lex.getStrVal();
5367 Lex.Lex();
5368 }
5369
5370 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5371 if (!BB)
5372 return Error(NameLoc,
5373 "unable to create block named '" + Name + "'");
5374
5375 std::string NameStr;
5376
5377 // Parse the instructions in this block until we get a terminator.
5378 Instruction *Inst;
5379 do {
5380 // This instruction may have three possibilities for a name: a) none
5381 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5382 LocTy NameLoc = Lex.getLoc();
5383 int NameID = -1;
5384 NameStr = "";
5385
5386 if (Lex.getKind() == lltok::LocalVarID) {
5387 NameID = Lex.getUIntVal();
5388 Lex.Lex();
5389 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5390 return true;
5391 } else if (Lex.getKind() == lltok::LocalVar) {
5392 NameStr = Lex.getStrVal();
5393 Lex.Lex();
5394 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5395 return true;
5396 }
5397
5398 switch (ParseInstruction(Inst, BB, PFS)) {
5399 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-7~svn338205/lib/AsmParser/LLParser.cpp"
, 5399)
;
5400 case InstError: return true;
5401 case InstNormal:
5402 BB->getInstList().push_back(Inst);
5403
5404 // With a normal result, we check to see if the instruction is followed by
5405 // a comma and metadata.
5406 if (EatIfPresent(lltok::comma))
5407 if (ParseInstructionMetadata(*Inst))
5408 return true;
5409 break;
5410 case InstExtraComma:
5411 BB->getInstList().push_back(Inst);
5412
5413 // If the instruction parser ate an extra comma at the end of it, it
5414 // *must* be followed by metadata.
5415 if (ParseInstructionMetadata(*Inst))
5416 return true;
5417 break;
5418 }
5419
5420 // Set the name on the instruction.
5421 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5422 } while (!isa<TerminatorInst>(Inst));
5423
5424 return false;
5425}
5426
5427//===----------------------------------------------------------------------===//
5428// Instruction Parsing.
5429//===----------------------------------------------------------------------===//
5430
5431/// ParseInstruction - Parse one of the many different instructions.
5432///
5433int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5434 PerFunctionState &PFS) {
5435 lltok::Kind Token = Lex.getKind();
5436 if (Token == lltok::Eof)
5437 return TokError("found end of file when expecting more instructions");
5438 LocTy Loc = Lex.getLoc();
5439 unsigned KeywordVal = Lex.getUIntVal();
5440 Lex.Lex(); // Eat the keyword.
5441
5442 switch (Token) {
5443 default: return Error(Loc, "expected instruction opcode");
5444 // Terminator Instructions.
5445 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5446 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5447 case lltok::kw_br: return ParseBr(Inst, PFS);
5448 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5449 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5450 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5451 case lltok::kw_resume: return ParseResume(Inst, PFS);
5452 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5453 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5454 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5455 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5456 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5457 // Binary Operators.
5458 case lltok::kw_add:
5459 case lltok::kw_sub:
5460 case lltok::kw_mul:
5461 case lltok::kw_shl: {
5462 bool NUW = EatIfPresent(lltok::kw_nuw);
5463 bool NSW = EatIfPresent(lltok::kw_nsw);
5464 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5465
5466 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5467
5468 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5469 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5470 return false;
5471 }
5472 case lltok::kw_fadd:
5473 case lltok::kw_fsub:
5474 case lltok::kw_fmul:
5475 case lltok::kw_fdiv:
5476 case lltok::kw_frem: {
5477 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5478 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5479 if (Res != 0)
5480 return Res;
5481 if (FMF.any())
5482 Inst->setFastMathFlags(FMF);
5483 return 0;
5484 }
5485
5486 case lltok::kw_sdiv:
5487 case lltok::kw_udiv:
5488 case lltok::kw_lshr:
5489 case lltok::kw_ashr: {
5490 bool Exact = EatIfPresent(lltok::kw_exact);
5491
5492 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5493 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5494 return false;
5495 }
5496
5497 case lltok::kw_urem:
5498 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5499 case lltok::kw_and:
5500 case lltok::kw_or:
5501 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5502 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5503 case lltok::kw_fcmp: {
5504 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5505 int Res = ParseCompare(Inst, PFS, KeywordVal);
5506 if (Res != 0)
5507 return Res;
5508 if (FMF.any())
5509 Inst->setFastMathFlags(FMF);
5510 return 0;
5511 }
5512
5513 // Casts.
5514 case lltok::kw_trunc:
5515 case lltok::kw_zext:
5516 case lltok::kw_sext:
5517 case lltok::kw_fptrunc:
5518 case lltok::kw_fpext:
5519 case lltok::kw_bitcast:
5520 case lltok::kw_addrspacecast:
5521 case lltok::kw_uitofp:
5522 case lltok::kw_sitofp:
5523 case lltok::kw_fptoui:
5524 case lltok::kw_fptosi:
5525 case lltok::kw_inttoptr:
5526 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5527 // Other.
5528 case lltok::kw_select: return ParseSelect(Inst, PFS);
5529 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5530 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5531 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5532 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5533 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5534 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5535 // Call.
5536 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5537 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5538 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5539 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5540 // Memory.
5541 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5542 case lltok::kw_load: return ParseLoad(Inst, PFS);
5543 case lltok::kw_store: return ParseStore(Inst, PFS);
5544 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5545 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5546 case lltok::kw_fence: return ParseFence(Inst, PFS);
5547 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5548 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5549 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5550 }
5551}
5552
5553/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5554bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5555 if (Opc == Instruction::FCmp) {
5556 switch (Lex.getKind()) {
5557 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5558 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5559 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5560 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5561 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5562 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5563 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5564 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5565 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5566 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5567 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5568 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5569 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5570 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5571 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5572 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5573 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5574 }
5575 } else {
5576 switch (Lex.getKind()) {
5577 default: return TokError("expected icmp predicate (e.g. 'eq')");
5578 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5579 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5580 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5581 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5582 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5583 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5584 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5585 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5586 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5587 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5588 }
5589 }
5590 Lex.Lex();
5591 return false;
5592}
5593
5594//===----------------------------------------------------------------------===//
5595// Terminator Instructions.
5596//===----------------------------------------------------------------------===//
5597
5598/// ParseRet - Parse a return instruction.
5599/// ::= 'ret' void (',' !dbg, !1)*
5600/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5601bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5602 PerFunctionState &PFS) {
5603 SMLoc TypeLoc = Lex.getLoc();
5604 Type *Ty = nullptr;
5605 if (ParseType(Ty, true /*void allowed*/)) return true;
5606
5607 Type *ResType = PFS.getFunction().getReturnType();
5608
5609 if (Ty->isVoidTy()) {
5610 if (!ResType->isVoidTy())
5611 return Error(TypeLoc, "value doesn't match function result type '" +
5612 getTypeString(ResType) + "'");
5613
5614 Inst = ReturnInst::Create(Context);
5615 return false;
5616 }
5617
5618 Value *RV;
5619 if (ParseValue(Ty, RV, PFS)) return true;
5620
5621 if (ResType != RV->getType())
5622 return Error(TypeLoc, "value doesn't match function result type '" +
5623 getTypeString(ResType) + "'");
5624
5625 Inst = ReturnInst::Create(Context, RV);
5626 return false;
5627}
5628
5629/// ParseBr
5630/// ::= 'br' TypeAndValue
5631/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5632bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5633 LocTy Loc, Loc2;
5634 Value *Op0;
5635 BasicBlock *Op1, *Op2;
5636 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5637
5638 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5639 Inst = BranchInst::Create(BB);
5640 return false;
5641 }
5642
5643 if (Op0->getType() != Type::getInt1Ty(Context))
5644 return Error(Loc, "branch condition must have 'i1' type");
5645
5646 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5647 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5648 ParseToken(lltok::comma, "expected ',' after true destination") ||
5649 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5650 return true;
5651
5652 Inst = BranchInst::Create(Op1, Op2, Op0);
5653 return false;
5654}
5655
5656/// ParseSwitch
5657/// Instruction
5658/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5659/// JumpTable
5660/// ::= (TypeAndValue ',' TypeAndValue)*
5661bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5662 LocTy CondLoc, BBLoc;
5663 Value *Cond;
5664 BasicBlock *DefaultBB;
5665 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5666 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5667 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5668 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5669 return true;
5670
5671 if (!Cond->getType()->isIntegerTy())
5672 return Error(CondLoc, "switch condition must have integer type");
5673
5674 // Parse the jump table pairs.
5675 SmallPtrSet<Value*, 32> SeenCases;
5676 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5677 while (Lex.getKind() != lltok::rsquare) {
5678 Value *Constant;
5679 BasicBlock *DestBB;
5680
5681 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5682 ParseToken(lltok::comma, "expected ',' after case value") ||
5683 ParseTypeAndBasicBlock(DestBB, PFS))
5684 return true;
5685
5686 if (!SeenCases.insert(Constant).second)
5687 return Error(CondLoc, "duplicate case value in switch");
5688 if (!isa<ConstantInt>(Constant))
5689 return Error(CondLoc, "case value is not a constant integer");
5690
5691 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5692 }
5693
5694 Lex.Lex(); // Eat the ']'.
5695
5696 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5697 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5698 SI->addCase(Table[i].first, Table[i].second);
5699 Inst = SI;
5700 return false;
5701}
5702
5703/// ParseIndirectBr
5704/// Instruction
5705/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5706bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5707 LocTy AddrLoc;
5708 Value *Address;
5709 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5710 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5711 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5712 return true;
5713
5714 if (!Address->getType()->isPointerTy())
5715 return Error(AddrLoc, "indirectbr address must have pointer type");
5716
5717 // Parse the destination list.
5718 SmallVector<BasicBlock*, 16> DestList;
5719
5720 if (Lex.getKind() != lltok::rsquare) {
5721 BasicBlock *DestBB;
5722 if (ParseTypeAndBasicBlock(DestBB, PFS))
5723 return true;
5724 DestList.push_back(DestBB);
5725
5726 while (EatIfPresent(lltok::comma)) {
5727 if (ParseTypeAndBasicBlock(DestBB, PFS))
5728 return true;
5729 DestList.push_back(DestBB);
5730 }
5731 }
5732
5733 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5734 return true;
5735
5736 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5737 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5738 IBI->addDestination(DestList[i]);
5739 Inst = IBI;
5740 return false;
5741}
5742
5743/// ParseInvoke
5744/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5745/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5746bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5747 LocTy CallLoc = Lex.getLoc();
5748 AttrBuilder RetAttrs, FnAttrs;
5749 std::vector<unsigned> FwdRefAttrGrps;
5750 LocTy NoBuiltinLoc;
5751 unsigned CC;
5752 Type *RetType = nullptr;
5753 LocTy RetTypeLoc;
5754 ValID CalleeID;
5755 SmallVector<ParamInfo, 16> ArgList;
5756 SmallVector<OperandBundleDef, 2> BundleList;
5757
5758 BasicBlock *NormalBB, *UnwindBB;
5759 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5760 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5761 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5762 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5763 NoBuiltinLoc) ||
5764 ParseOptionalOperandBundles(BundleList, PFS) ||
5765 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5766 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5767 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5768 ParseTypeAndBasicBlock(UnwindBB, PFS))
5769 return true;
5770
5771 // If RetType is a non-function pointer type, then this is the short syntax
5772 // for the call, which means that RetType is just the return type. Infer the
5773 // rest of the function argument types from the arguments that are present.
5774 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5775 if (!Ty) {
5776 // Pull out the types of all of the arguments...
5777 std::vector<Type*> ParamTypes;
5778 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5779 ParamTypes.push_back(ArgList[i].V->getType());
5780
5781 if (!FunctionType::isValidReturnType(RetType))
5782 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5783
5784 Ty = FunctionType::get(RetType, ParamTypes, false);
5785 }
5786
5787 CalleeID.FTy = Ty;
5788
5789 // Look up the callee.
5790 Value *Callee;