Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 3903, column 3
1st function call argument is an uninitialized value

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~svn325118/build-llvm/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn325118/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn325118/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/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/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn325118/build-llvm/lib/AsmParser -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-02-14-150435-17243-1 -x c++ /build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp

/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp

1//===-- LLParser.cpp - Parser Class ---------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines the parser class for .ll files.
11//
12//===----------------------------------------------------------------------===//
13
14#include "LLParser.h"
15#include "llvm/ADT/DenseMap.h"
16#include "llvm/ADT/None.h"
17#include "llvm/ADT/Optional.h"
18#include "llvm/ADT/STLExtras.h"
19#include "llvm/ADT/SmallPtrSet.h"
20#include "llvm/AsmParser/SlotMapping.h"
21#include "llvm/BinaryFormat/Dwarf.h"
22#include "llvm/IR/Argument.h"
23#include "llvm/IR/AutoUpgrade.h"
24#include "llvm/IR/BasicBlock.h"
25#include "llvm/IR/CallingConv.h"
26#include "llvm/IR/Comdat.h"
27#include "llvm/IR/Constants.h"
28#include "llvm/IR/DebugInfoMetadata.h"
29#include "llvm/IR/DerivedTypes.h"
30#include "llvm/IR/Function.h"
31#include "llvm/IR/GlobalIFunc.h"
32#include "llvm/IR/GlobalObject.h"
33#include "llvm/IR/InlineAsm.h"
34#include "llvm/IR/Instruction.h"
35#include "llvm/IR/Instructions.h"
36#include "llvm/IR/Intrinsics.h"
37#include "llvm/IR/LLVMContext.h"
38#include "llvm/IR/Metadata.h"
39#include "llvm/IR/Module.h"
40#include "llvm/IR/Operator.h"
41#include "llvm/IR/Type.h"
42#include "llvm/IR/Value.h"
43#include "llvm/IR/ValueSymbolTable.h"
44#include "llvm/Support/Casting.h"
45#include "llvm/Support/ErrorHandling.h"
46#include "llvm/Support/MathExtras.h"
47#include "llvm/Support/SaveAndRestore.h"
48#include "llvm/Support/raw_ostream.h"
49#include <algorithm>
50#include <cassert>
51#include <cstring>
52#include <iterator>
53#include <vector>
54
55using namespace llvm;
56
57static std::string getTypeString(Type *T) {
58 std::string Result;
59 raw_string_ostream Tmp(Result);
60 Tmp << *T;
61 return Tmp.str();
62}
63
64/// Run: module ::= toplevelentity*
65bool LLParser::Run() {
66 // Prime the lexer.
67 Lex.Lex();
68
69 if (Context.shouldDiscardValueNames())
70 return Error(
71 Lex.getLoc(),
72 "Can't read textual IR with a Context that discards named Values");
73
74 return ParseTopLevelEntities() ||
75 ValidateEndOfModule();
76}
77
78bool LLParser::parseStandaloneConstantValue(Constant *&C,
79 const SlotMapping *Slots) {
80 restoreParsingState(Slots);
81 Lex.Lex();
82
83 Type *Ty = nullptr;
84 if (ParseType(Ty) || parseConstantValue(Ty, C))
85 return true;
86 if (Lex.getKind() != lltok::Eof)
87 return Error(Lex.getLoc(), "expected end of string");
88 return false;
89}
90
91bool LLParser::parseTypeAtBeginning(Type *&Ty, unsigned &Read,
92 const SlotMapping *Slots) {
93 restoreParsingState(Slots);
94 Lex.Lex();
95
96 Read = 0;
97 SMLoc Start = Lex.getLoc();
98 Ty = nullptr;
99 if (ParseType(Ty))
100 return true;
101 SMLoc End = Lex.getLoc();
102 Read = End.getPointer() - Start.getPointer();
103
104 return false;
105}
106
107void LLParser::restoreParsingState(const SlotMapping *Slots) {
108 if (!Slots)
109 return;
110 NumberedVals = Slots->GlobalValues;
111 NumberedMetadata = Slots->MetadataNodes;
112 for (const auto &I : Slots->NamedTypes)
113 NamedTypes.insert(
114 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
115 for (const auto &I : Slots->Types)
116 NumberedTypes.insert(
117 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
118}
119
120/// ValidateEndOfModule - Do final validity and sanity checks at the end of the
121/// module.
122bool LLParser::ValidateEndOfModule() {
123 // Handle any function attribute group forward references.
124 for (const auto &RAG : ForwardRefAttrGroups) {
125 Value *V = RAG.first;
126 const std::vector<unsigned> &Attrs = RAG.second;
127 AttrBuilder B;
128
129 for (const auto &Attr : Attrs)
130 B.merge(NumberedAttrBuilders[Attr]);
131
132 if (Function *Fn = dyn_cast<Function>(V)) {
133 AttributeList AS = Fn->getAttributes();
134 AttrBuilder FnAttrs(AS.getFnAttributes());
135 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
136
137 FnAttrs.merge(B);
138
139 // If the alignment was parsed as an attribute, move to the alignment
140 // field.
141 if (FnAttrs.hasAlignmentAttr()) {
142 Fn->setAlignment(FnAttrs.getAlignment());
143 FnAttrs.removeAttribute(Attribute::Alignment);
144 }
145
146 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
147 AttributeSet::get(Context, FnAttrs));
148 Fn->setAttributes(AS);
149 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
150 AttributeList AS = CI->getAttributes();
151 AttrBuilder FnAttrs(AS.getFnAttributes());
152 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
153 FnAttrs.merge(B);
154 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
155 AttributeSet::get(Context, FnAttrs));
156 CI->setAttributes(AS);
157 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
158 AttributeList AS = II->getAttributes();
159 AttrBuilder FnAttrs(AS.getFnAttributes());
160 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
161 FnAttrs.merge(B);
162 AS = AS.addAttributes(Context, AttributeList::FunctionIndex,
163 AttributeSet::get(Context, FnAttrs));
164 II->setAttributes(AS);
165 } else if (auto *GV = dyn_cast<GlobalVariable>(V)) {
166 AttrBuilder Attrs(GV->getAttributes());
167 Attrs.merge(B);
168 GV->setAttributes(AttributeSet::get(Context,Attrs));
169 } else {
170 llvm_unreachable("invalid object with forward attribute group reference")::llvm::llvm_unreachable_internal("invalid object with forward attribute group reference"
, "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 170)
;
171 }
172 }
173
174 // If there are entries in ForwardRefBlockAddresses at this point, the
175 // function was never defined.
176 if (!ForwardRefBlockAddresses.empty())
177 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
178 "expected function name in blockaddress");
179
180 for (const auto &NT : NumberedTypes)
181 if (NT.second.second.isValid())
182 return Error(NT.second.second,
183 "use of undefined type '%" + Twine(NT.first) + "'");
184
185 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
186 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
187 if (I->second.second.isValid())
188 return Error(I->second.second,
189 "use of undefined type named '" + I->getKey() + "'");
190
191 if (!ForwardRefComdats.empty())
192 return Error(ForwardRefComdats.begin()->second,
193 "use of undefined comdat '$" +
194 ForwardRefComdats.begin()->first + "'");
195
196 if (!ForwardRefVals.empty())
197 return Error(ForwardRefVals.begin()->second.second,
198 "use of undefined value '@" + ForwardRefVals.begin()->first +
199 "'");
200
201 if (!ForwardRefValIDs.empty())
202 return Error(ForwardRefValIDs.begin()->second.second,
203 "use of undefined value '@" +
204 Twine(ForwardRefValIDs.begin()->first) + "'");
205
206 if (!ForwardRefMDNodes.empty())
207 return Error(ForwardRefMDNodes.begin()->second.second,
208 "use of undefined metadata '!" +
209 Twine(ForwardRefMDNodes.begin()->first) + "'");
210
211 // Resolve metadata cycles.
212 for (auto &N : NumberedMetadata) {
213 if (N.second && !N.second->isResolved())
214 N.second->resolveCycles();
215 }
216
217 for (auto *Inst : InstsWithTBAATag) {
218 MDNode *MD = Inst->getMetadata(LLVMContext::MD_tbaa);
219 assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag")(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~svn325118/lib/AsmParser/LLParser.cpp"
, 219, __extension__ __PRETTY_FUNCTION__))
;
220 auto *UpgradedMD = UpgradeTBAANode(*MD);
221 if (MD != UpgradedMD)
222 Inst->setMetadata(LLVMContext::MD_tbaa, UpgradedMD);
223 }
224
225 // Look for intrinsic functions and CallInst that need to be upgraded
226 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
227 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
228
229 // Some types could be renamed during loading if several modules are
230 // loaded in the same LLVMContext (LTO scenario). In this case we should
231 // remangle intrinsics names as well.
232 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ) {
233 Function *F = &*FI++;
234 if (auto Remangled = Intrinsic::remangleIntrinsicFunction(F)) {
235 F->replaceAllUsesWith(Remangled.getValue());
236 F->eraseFromParent();
237 }
238 }
239
240 if (UpgradeDebugInfo)
241 llvm::UpgradeDebugInfo(*M);
242
243 UpgradeModuleFlags(*M);
244 UpgradeSectionAttributes(*M);
245
246 if (!Slots)
247 return false;
248 // Initialize the slot mapping.
249 // Because by this point we've parsed and validated everything, we can "steal"
250 // the mapping from LLParser as it doesn't need it anymore.
251 Slots->GlobalValues = std::move(NumberedVals);
252 Slots->MetadataNodes = std::move(NumberedMetadata);
253 for (const auto &I : NamedTypes)
254 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
255 for (const auto &I : NumberedTypes)
256 Slots->Types.insert(std::make_pair(I.first, I.second.first));
257
258 return false;
259}
260
261//===----------------------------------------------------------------------===//
262// Top-Level Entities
263//===----------------------------------------------------------------------===//
264
265bool LLParser::ParseTopLevelEntities() {
266 while (true) {
267 switch (Lex.getKind()) {
268 default: return TokError("expected top-level entity");
269 case lltok::Eof: return false;
270 case lltok::kw_declare: if (ParseDeclare()) return true; break;
271 case lltok::kw_define: if (ParseDefine()) return true; break;
272 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
273 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
274 case lltok::kw_source_filename:
275 if (ParseSourceFileName())
276 return true;
277 break;
278 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
279 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
280 case lltok::LocalVar: if (ParseNamedType()) return true; break;
281 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
282 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
283 case lltok::ComdatVar: if (parseComdat()) return true; break;
284 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
285 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
286 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
287 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
288 case lltok::kw_uselistorder_bb:
289 if (ParseUseListOrderBB())
290 return true;
291 break;
292 }
293 }
294}
295
296/// toplevelentity
297/// ::= 'module' 'asm' STRINGCONSTANT
298bool LLParser::ParseModuleAsm() {
299 assert(Lex.getKind() == lltok::kw_module)(static_cast <bool> (Lex.getKind() == lltok::kw_module)
? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_module"
, "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 299, __extension__ __PRETTY_FUNCTION__))
;
300 Lex.Lex();
301
302 std::string AsmStr;
303 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
304 ParseStringConstant(AsmStr)) return true;
305
306 M->appendModuleInlineAsm(AsmStr);
307 return false;
308}
309
310/// toplevelentity
311/// ::= 'target' 'triple' '=' STRINGCONSTANT
312/// ::= 'target' 'datalayout' '=' STRINGCONSTANT
313bool LLParser::ParseTargetDefinition() {
314 assert(Lex.getKind() == lltok::kw_target)(static_cast <bool> (Lex.getKind() == lltok::kw_target)
? void (0) : __assert_fail ("Lex.getKind() == lltok::kw_target"
, "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 314, __extension__ __PRETTY_FUNCTION__))
;
315 std::string Str;
316 switch (Lex.Lex()) {
317 default: return TokError("unknown target property");
318 case lltok::kw_triple:
319 Lex.Lex();
320 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
321 ParseStringConstant(Str))
322 return true;
323 M->setTargetTriple(Str);
324 return false;
325 case lltok::kw_datalayout:
326 Lex.Lex();
327 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
328 ParseStringConstant(Str))
329 return true;
330 if (DataLayoutStr.empty())
331 M->setDataLayout(Str);
332 return false;
333 }
334}
335
336/// toplevelentity
337/// ::= 'source_filename' '=' STRINGCONSTANT
338bool LLParser::ParseSourceFileName() {
339 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~svn325118/lib/AsmParser/LLParser.cpp"
, 339, __extension__ __PRETTY_FUNCTION__))
;
340 std::string Str;
341 Lex.Lex();
342 if (ParseToken(lltok::equal, "expected '=' after source_filename") ||
343 ParseStringConstant(Str))
344 return true;
345 M->setSourceFileName(Str);
346 return false;
347}
348
349/// toplevelentity
350/// ::= 'deplibs' '=' '[' ']'
351/// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
352/// FIXME: Remove in 4.0. Currently parse, but ignore.
353bool LLParser::ParseDepLibs() {
354 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~svn325118/lib/AsmParser/LLParser.cpp"
, 354, __extension__ __PRETTY_FUNCTION__))
;
355 Lex.Lex();
356 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
357 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
358 return true;
359
360 if (EatIfPresent(lltok::rsquare))
361 return false;
362
363 do {
364 std::string Str;
365 if (ParseStringConstant(Str)) return true;
366 } while (EatIfPresent(lltok::comma));
367
368 return ParseToken(lltok::rsquare, "expected ']' at end of list");
369}
370
371/// ParseUnnamedType:
372/// ::= LocalVarID '=' 'type' type
373bool LLParser::ParseUnnamedType() {
374 LocTy TypeLoc = Lex.getLoc();
375 unsigned TypeID = Lex.getUIntVal();
376 Lex.Lex(); // eat LocalVarID;
377
378 if (ParseToken(lltok::equal, "expected '=' after name") ||
379 ParseToken(lltok::kw_type, "expected 'type' after '='"))
380 return true;
381
382 Type *Result = nullptr;
383 if (ParseStructDefinition(TypeLoc, "",
384 NumberedTypes[TypeID], Result)) return true;
385
386 if (!isa<StructType>(Result)) {
387 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
388 if (Entry.first)
389 return Error(TypeLoc, "non-struct types may not be recursive");
390 Entry.first = Result;
391 Entry.second = SMLoc();
392 }
393
394 return false;
395}
396
397/// toplevelentity
398/// ::= LocalVar '=' 'type' type
399bool LLParser::ParseNamedType() {
400 std::string Name = Lex.getStrVal();
401 LocTy NameLoc = Lex.getLoc();
402 Lex.Lex(); // eat LocalVar.
403
404 if (ParseToken(lltok::equal, "expected '=' after name") ||
405 ParseToken(lltok::kw_type, "expected 'type' after name"))
406 return true;
407
408 Type *Result = nullptr;
409 if (ParseStructDefinition(NameLoc, Name,
410 NamedTypes[Name], Result)) return true;
411
412 if (!isa<StructType>(Result)) {
413 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
414 if (Entry.first)
415 return Error(NameLoc, "non-struct types may not be recursive");
416 Entry.first = Result;
417 Entry.second = SMLoc();
418 }
419
420 return false;
421}
422
423/// toplevelentity
424/// ::= 'declare' FunctionHeader
425bool LLParser::ParseDeclare() {
426 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~svn325118/lib/AsmParser/LLParser.cpp"
, 426, __extension__ __PRETTY_FUNCTION__))
;
427 Lex.Lex();
428
429 std::vector<std::pair<unsigned, MDNode *>> MDs;
430 while (Lex.getKind() == lltok::MetadataVar) {
431 unsigned MDK;
432 MDNode *N;
433 if (ParseMetadataAttachment(MDK, N))
434 return true;
435 MDs.push_back({MDK, N});
436 }
437
438 Function *F;
439 if (ParseFunctionHeader(F, false))
440 return true;
441 for (auto &MD : MDs)
442 F->addMetadata(MD.first, *MD.second);
443 return false;
444}
445
446/// toplevelentity
447/// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
448bool LLParser::ParseDefine() {
449 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~svn325118/lib/AsmParser/LLParser.cpp"
, 449, __extension__ __PRETTY_FUNCTION__))
;
450 Lex.Lex();
451
452 Function *F;
453 return ParseFunctionHeader(F, true) ||
454 ParseOptionalFunctionMetadata(*F) ||
455 ParseFunctionBody(*F);
456}
457
458/// ParseGlobalType
459/// ::= 'constant'
460/// ::= 'global'
461bool LLParser::ParseGlobalType(bool &IsConstant) {
462 if (Lex.getKind() == lltok::kw_constant)
463 IsConstant = true;
464 else if (Lex.getKind() == lltok::kw_global)
465 IsConstant = false;
466 else {
467 IsConstant = false;
468 return TokError("expected 'global' or 'constant'");
469 }
470 Lex.Lex();
471 return false;
472}
473
474bool LLParser::ParseOptionalUnnamedAddr(
475 GlobalVariable::UnnamedAddr &UnnamedAddr) {
476 if (EatIfPresent(lltok::kw_unnamed_addr))
477 UnnamedAddr = GlobalValue::UnnamedAddr::Global;
478 else if (EatIfPresent(lltok::kw_local_unnamed_addr))
479 UnnamedAddr = GlobalValue::UnnamedAddr::Local;
480 else
481 UnnamedAddr = GlobalValue::UnnamedAddr::None;
482 return false;
483}
484
485/// ParseUnnamedGlobal:
486/// OptionalVisibility (ALIAS | IFUNC) ...
487/// OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
488/// OptionalDLLStorageClass
489/// ... -> global variable
490/// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
491/// GlobalID '=' OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
492/// OptionalDLLStorageClass
493/// ... -> global variable
494bool LLParser::ParseUnnamedGlobal() {
495 unsigned VarID = NumberedVals.size();
496 std::string Name;
497 LocTy NameLoc = Lex.getLoc();
498
499 // Handle the GlobalID form.
500 if (Lex.getKind() == lltok::GlobalID) {
501 if (Lex.getUIntVal() != VarID)
502 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
503 Twine(VarID) + "'");
504 Lex.Lex(); // eat GlobalID;
505
506 if (ParseToken(lltok::equal, "expected '=' after name"))
507 return true;
508 }
509
510 bool HasLinkage;
511 unsigned Linkage, Visibility, DLLStorageClass;
512 bool DSOLocal;
513 GlobalVariable::ThreadLocalMode TLM;
514 GlobalVariable::UnnamedAddr UnnamedAddr;
515 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
516 DSOLocal) ||
517 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
518 return true;
519
520 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
521 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
522 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
523
524 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
525 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
526}
527
528/// ParseNamedGlobal:
529/// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
530/// GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
531/// OptionalVisibility OptionalDLLStorageClass
532/// ... -> global variable
533bool LLParser::ParseNamedGlobal() {
534 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~svn325118/lib/AsmParser/LLParser.cpp"
, 534, __extension__ __PRETTY_FUNCTION__))
;
535 LocTy NameLoc = Lex.getLoc();
536 std::string Name = Lex.getStrVal();
537 Lex.Lex();
538
539 bool HasLinkage;
540 unsigned Linkage, Visibility, DLLStorageClass;
541 bool DSOLocal;
542 GlobalVariable::ThreadLocalMode TLM;
543 GlobalVariable::UnnamedAddr UnnamedAddr;
544 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
545 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
546 DSOLocal) ||
547 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
548 return true;
549
550 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
551 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
552 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
553
554 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
555 DLLStorageClass, DSOLocal, TLM, UnnamedAddr);
556}
557
558bool LLParser::parseComdat() {
559 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~svn325118/lib/AsmParser/LLParser.cpp"
, 559, __extension__ __PRETTY_FUNCTION__))
;
560 std::string Name = Lex.getStrVal();
561 LocTy NameLoc = Lex.getLoc();
562 Lex.Lex();
563
564 if (ParseToken(lltok::equal, "expected '=' here"))
565 return true;
566
567 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
568 return TokError("expected comdat type");
569
570 Comdat::SelectionKind SK;
571 switch (Lex.getKind()) {
572 default:
573 return TokError("unknown selection kind");
574 case lltok::kw_any:
575 SK = Comdat::Any;
576 break;
577 case lltok::kw_exactmatch:
578 SK = Comdat::ExactMatch;
579 break;
580 case lltok::kw_largest:
581 SK = Comdat::Largest;
582 break;
583 case lltok::kw_noduplicates:
584 SK = Comdat::NoDuplicates;
585 break;
586 case lltok::kw_samesize:
587 SK = Comdat::SameSize;
588 break;
589 }
590 Lex.Lex();
591
592 // See if the comdat was forward referenced, if so, use the comdat.
593 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
594 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
595 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
596 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
597
598 Comdat *C;
599 if (I != ComdatSymTab.end())
600 C = &I->second;
601 else
602 C = M->getOrInsertComdat(Name);
603 C->setSelectionKind(SK);
604
605 return false;
606}
607
608// MDString:
609// ::= '!' STRINGCONSTANT
610bool LLParser::ParseMDString(MDString *&Result) {
611 std::string Str;
612 if (ParseStringConstant(Str)) return true;
613 Result = MDString::get(Context, Str);
614 return false;
615}
616
617// MDNode:
618// ::= '!' MDNodeNumber
619bool LLParser::ParseMDNodeID(MDNode *&Result) {
620 // !{ ..., !42, ... }
621 LocTy IDLoc = Lex.getLoc();
622 unsigned MID = 0;
623 if (ParseUInt32(MID))
624 return true;
625
626 // If not a forward reference, just return it now.
627 if (NumberedMetadata.count(MID)) {
628 Result = NumberedMetadata[MID];
629 return false;
630 }
631
632 // Otherwise, create MDNode forward reference.
633 auto &FwdRef = ForwardRefMDNodes[MID];
634 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
635
636 Result = FwdRef.first.get();
637 NumberedMetadata[MID].reset(Result);
638 return false;
639}
640
641/// ParseNamedMetadata:
642/// !foo = !{ !1, !2 }
643bool LLParser::ParseNamedMetadata() {
644 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~svn325118/lib/AsmParser/LLParser.cpp"
, 644, __extension__ __PRETTY_FUNCTION__))
;
645 std::string Name = Lex.getStrVal();
646 Lex.Lex();
647
648 if (ParseToken(lltok::equal, "expected '=' here") ||
649 ParseToken(lltok::exclaim, "Expected '!' here") ||
650 ParseToken(lltok::lbrace, "Expected '{' here"))
651 return true;
652
653 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
654 if (Lex.getKind() != lltok::rbrace)
655 do {
656 MDNode *N = nullptr;
657 // Parse DIExpressions inline as a special case. They are still MDNodes,
658 // so they can still appear in named metadata. Remove this logic if they
659 // become plain Metadata.
660 if (Lex.getKind() == lltok::MetadataVar &&
661 Lex.getStrVal() == "DIExpression") {
662 if (ParseDIExpression(N, /*IsDistinct=*/false))
663 return true;
664 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
665 ParseMDNodeID(N)) {
666 return true;
667 }
668 NMD->addOperand(N);
669 } while (EatIfPresent(lltok::comma));
670
671 return ParseToken(lltok::rbrace, "expected end of metadata node");
672}
673
674/// ParseStandaloneMetadata:
675/// !42 = !{...}
676bool LLParser::ParseStandaloneMetadata() {
677 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~svn325118/lib/AsmParser/LLParser.cpp"
, 677, __extension__ __PRETTY_FUNCTION__))
;
678 Lex.Lex();
679 unsigned MetadataID = 0;
680
681 MDNode *Init;
682 if (ParseUInt32(MetadataID) ||
683 ParseToken(lltok::equal, "expected '=' here"))
684 return true;
685
686 // Detect common error, from old metadata syntax.
687 if (Lex.getKind() == lltok::Type)
688 return TokError("unexpected type in metadata definition");
689
690 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
691 if (Lex.getKind() == lltok::MetadataVar) {
692 if (ParseSpecializedMDNode(Init, IsDistinct))
693 return true;
694 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
695 ParseMDTuple(Init, IsDistinct))
696 return true;
697
698 // See if this was forward referenced, if so, handle it.
699 auto FI = ForwardRefMDNodes.find(MetadataID);
700 if (FI != ForwardRefMDNodes.end()) {
701 FI->second.first->replaceAllUsesWith(Init);
702 ForwardRefMDNodes.erase(FI);
703
704 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~svn325118/lib/AsmParser/LLParser.cpp"
, 704, __extension__ __PRETTY_FUNCTION__))
;
705 } else {
706 if (NumberedMetadata.count(MetadataID))
707 return TokError("Metadata id is already used");
708 NumberedMetadata[MetadataID].reset(Init);
709 }
710
711 return false;
712}
713
714static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
715 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
716 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
717}
718
719// If there was an explicit dso_local, update GV. In the absence of an explicit
720// dso_local we keep the default value.
721static void maybeSetDSOLocal(bool DSOLocal, GlobalValue &GV) {
722 if (DSOLocal)
723 GV.setDSOLocal(true);
724}
725
726/// parseIndirectSymbol:
727/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
728/// OptionalVisibility OptionalDLLStorageClass
729/// OptionalThreadLocal OptionalUnnamedAddr
730// 'alias|ifunc' IndirectSymbol
731///
732/// IndirectSymbol
733/// ::= TypeAndValue
734///
735/// Everything through OptionalUnnamedAddr has already been parsed.
736///
737bool LLParser::parseIndirectSymbol(const std::string &Name, LocTy NameLoc,
738 unsigned L, unsigned Visibility,
739 unsigned DLLStorageClass, bool DSOLocal,
740 GlobalVariable::ThreadLocalMode TLM,
741 GlobalVariable::UnnamedAddr UnnamedAddr) {
742 bool IsAlias;
743 if (Lex.getKind() == lltok::kw_alias)
744 IsAlias = true;
745 else if (Lex.getKind() == lltok::kw_ifunc)
746 IsAlias = false;
747 else
748 llvm_unreachable("Not an alias or ifunc!")::llvm::llvm_unreachable_internal("Not an alias or ifunc!", "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 748)
;
749 Lex.Lex();
750
751 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
752
753 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
754 return Error(NameLoc, "invalid linkage type for alias");
755
756 if (!isValidVisibilityForLinkage(Visibility, L))
757 return Error(NameLoc,
758 "symbol with local linkage must have default visibility");
759
760 Type *Ty;
761 LocTy ExplicitTypeLoc = Lex.getLoc();
762 if (ParseType(Ty) ||
763 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
764 return true;
765
766 Constant *Aliasee;
767 LocTy AliaseeLoc = Lex.getLoc();
768 if (Lex.getKind() != lltok::kw_bitcast &&
769 Lex.getKind() != lltok::kw_getelementptr &&
770 Lex.getKind() != lltok::kw_addrspacecast &&
771 Lex.getKind() != lltok::kw_inttoptr) {
772 if (ParseGlobalTypeAndValue(Aliasee))
773 return true;
774 } else {
775 // The bitcast dest type is not present, it is implied by the dest type.
776 ValID ID;
777 if (ParseValID(ID))
778 return true;
779 if (ID.Kind != ValID::t_Constant)
780 return Error(AliaseeLoc, "invalid aliasee");
781 Aliasee = ID.ConstantVal;
782 }
783
784 Type *AliaseeType = Aliasee->getType();
785 auto *PTy = dyn_cast<PointerType>(AliaseeType);
786 if (!PTy)
787 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
788 unsigned AddrSpace = PTy->getAddressSpace();
789
790 if (IsAlias && Ty != PTy->getElementType())
791 return Error(
792 ExplicitTypeLoc,
793 "explicit pointee type doesn't match operand's pointee type");
794
795 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
796 return Error(
797 ExplicitTypeLoc,
798 "explicit pointee type should be a function type");
799
800 GlobalValue *GVal = nullptr;
801
802 // See if the alias was forward referenced, if so, prepare to replace the
803 // forward reference.
804 if (!Name.empty()) {
805 GVal = M->getNamedValue(Name);
806 if (GVal) {
807 if (!ForwardRefVals.erase(Name))
808 return Error(NameLoc, "redefinition of global '@" + Name + "'");
809 }
810 } else {
811 auto I = ForwardRefValIDs.find(NumberedVals.size());
812 if (I != ForwardRefValIDs.end()) {
813 GVal = I->second.first;
814 ForwardRefValIDs.erase(I);
815 }
816 }
817
818 // Okay, create the alias but do not insert it into the module yet.
819 std::unique_ptr<GlobalIndirectSymbol> GA;
820 if (IsAlias)
821 GA.reset(GlobalAlias::create(Ty, AddrSpace,
822 (GlobalValue::LinkageTypes)Linkage, Name,
823 Aliasee, /*Parent*/ nullptr));
824 else
825 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
826 (GlobalValue::LinkageTypes)Linkage, Name,
827 Aliasee, /*Parent*/ nullptr));
828 GA->setThreadLocalMode(TLM);
829 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
830 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
831 GA->setUnnamedAddr(UnnamedAddr);
832 maybeSetDSOLocal(DSOLocal, *GA);
833
834 if (Name.empty())
835 NumberedVals.push_back(GA.get());
836
837 if (GVal) {
838 // Verify that types agree.
839 if (GVal->getType() != GA->getType())
840 return Error(
841 ExplicitTypeLoc,
842 "forward reference and definition of alias have different types");
843
844 // If they agree, just RAUW the old value with the alias and remove the
845 // forward ref info.
846 GVal->replaceAllUsesWith(GA.get());
847 GVal->eraseFromParent();
848 }
849
850 // Insert into the module, we know its name won't collide now.
851 if (IsAlias)
852 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
853 else
854 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
855 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~svn325118/lib/AsmParser/LLParser.cpp"
, 855, __extension__ __PRETTY_FUNCTION__))
;
856
857 // The module owns this now
858 GA.release();
859
860 return false;
861}
862
863/// ParseGlobal
864/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
865/// OptionalVisibility OptionalDLLStorageClass
866/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
867/// OptionalExternallyInitialized GlobalType Type Const OptionalAttrs
868/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
869/// OptionalDLLStorageClass OptionalThreadLocal OptionalUnnamedAddr
870/// OptionalAddrSpace OptionalExternallyInitialized GlobalType Type
871/// Const OptionalAttrs
872///
873/// Everything up to and including OptionalUnnamedAddr has been parsed
874/// already.
875///
876bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
877 unsigned Linkage, bool HasLinkage,
878 unsigned Visibility, unsigned DLLStorageClass,
879 bool DSOLocal, GlobalVariable::ThreadLocalMode TLM,
880 GlobalVariable::UnnamedAddr UnnamedAddr) {
881 if (!isValidVisibilityForLinkage(Visibility, Linkage))
882 return Error(NameLoc,
883 "symbol with local linkage must have default visibility");
884
885 unsigned AddrSpace;
886 bool IsConstant, IsExternallyInitialized;
887 LocTy IsExternallyInitializedLoc;
888 LocTy TyLoc;
889
890 Type *Ty = nullptr;
891 if (ParseOptionalAddrSpace(AddrSpace) ||
892 ParseOptionalToken(lltok::kw_externally_initialized,
893 IsExternallyInitialized,
894 &IsExternallyInitializedLoc) ||
895 ParseGlobalType(IsConstant) ||
896 ParseType(Ty, TyLoc))
897 return true;
898
899 // If the linkage is specified and is external, then no initializer is
900 // present.
901 Constant *Init = nullptr;
902 if (!HasLinkage ||
903 !GlobalValue::isValidDeclarationLinkage(
904 (GlobalValue::LinkageTypes)Linkage)) {
905 if (ParseGlobalValue(Ty, Init))
906 return true;
907 }
908
909 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
910 return Error(TyLoc, "invalid type for global variable");
911
912 GlobalValue *GVal = nullptr;
913
914 // See if the global was forward referenced, if so, use the global.
915 if (!Name.empty()) {
916 GVal = M->getNamedValue(Name);
917 if (GVal) {
918 if (!ForwardRefVals.erase(Name))
919 return Error(NameLoc, "redefinition of global '@" + Name + "'");
920 }
921 } else {
922 auto I = ForwardRefValIDs.find(NumberedVals.size());
923 if (I != ForwardRefValIDs.end()) {
924 GVal = I->second.first;
925 ForwardRefValIDs.erase(I);
926 }
927 }
928
929 GlobalVariable *GV;
930 if (!GVal) {
931 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
932 Name, nullptr, GlobalVariable::NotThreadLocal,
933 AddrSpace);
934 } else {
935 if (GVal->getValueType() != Ty)
936 return Error(TyLoc,
937 "forward reference and definition of global have different types");
938
939 GV = cast<GlobalVariable>(GVal);
940
941 // Move the forward-reference to the correct spot in the module.
942 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
943 }
944
945 if (Name.empty())
946 NumberedVals.push_back(GV);
947
948 // Set the parsed properties on the global.
949 if (Init)
950 GV->setInitializer(Init);
951 GV->setConstant(IsConstant);
952 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
953 maybeSetDSOLocal(DSOLocal, *GV);
954 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
955 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
956 GV->setExternallyInitialized(IsExternallyInitialized);
957 GV->setThreadLocalMode(TLM);
958 GV->setUnnamedAddr(UnnamedAddr);
959
960 // Parse attributes on the global.
961 while (Lex.getKind() == lltok::comma) {
962 Lex.Lex();
963
964 if (Lex.getKind() == lltok::kw_section) {
965 Lex.Lex();
966 GV->setSection(Lex.getStrVal());
967 if (ParseToken(lltok::StringConstant, "expected global section string"))
968 return true;
969 } else if (Lex.getKind() == lltok::kw_align) {
970 unsigned Alignment;
971 if (ParseOptionalAlignment(Alignment)) return true;
972 GV->setAlignment(Alignment);
973 } else if (Lex.getKind() == lltok::MetadataVar) {
974 if (ParseGlobalObjectMetadataAttachment(*GV))
975 return true;
976 } else {
977 Comdat *C;
978 if (parseOptionalComdat(Name, C))
979 return true;
980 if (C)
981 GV->setComdat(C);
982 else
983 return TokError("unknown global variable property!");
984 }
985 }
986
987 AttrBuilder Attrs;
988 LocTy BuiltinLoc;
989 std::vector<unsigned> FwdRefAttrGrps;
990 if (ParseFnAttributeValuePairs(Attrs, FwdRefAttrGrps, false, BuiltinLoc))
991 return true;
992 if (Attrs.hasAttributes() || !FwdRefAttrGrps.empty()) {
993 GV->setAttributes(AttributeSet::get(Context, Attrs));
994 ForwardRefAttrGroups[GV] = FwdRefAttrGrps;
995 }
996
997 return false;
998}
999
1000/// ParseUnnamedAttrGrp
1001/// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
1002bool LLParser::ParseUnnamedAttrGrp() {
1003 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~svn325118/lib/AsmParser/LLParser.cpp"
, 1003, __extension__ __PRETTY_FUNCTION__))
;
1004 LocTy AttrGrpLoc = Lex.getLoc();
1005 Lex.Lex();
1006
1007 if (Lex.getKind() != lltok::AttrGrpID)
1008 return TokError("expected attribute group id");
1009
1010 unsigned VarID = Lex.getUIntVal();
1011 std::vector<unsigned> unused;
1012 LocTy BuiltinLoc;
1013 Lex.Lex();
1014
1015 if (ParseToken(lltok::equal, "expected '=' here") ||
1016 ParseToken(lltok::lbrace, "expected '{' here") ||
1017 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
1018 BuiltinLoc) ||
1019 ParseToken(lltok::rbrace, "expected end of attribute group"))
1020 return true;
1021
1022 if (!NumberedAttrBuilders[VarID].hasAttributes())
1023 return Error(AttrGrpLoc, "attribute group has no attributes");
1024
1025 return false;
1026}
1027
1028/// ParseFnAttributeValuePairs
1029/// ::= <attr> | <attr> '=' <value>
1030bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
1031 std::vector<unsigned> &FwdRefAttrGrps,
1032 bool inAttrGrp, LocTy &BuiltinLoc) {
1033 bool HaveError = false;
1034
1035 B.clear();
1036
1037 while (true) {
1038 lltok::Kind Token = Lex.getKind();
1039 if (Token == lltok::kw_builtin)
1040 BuiltinLoc = Lex.getLoc();
1041 switch (Token) {
1042 default:
1043 if (!inAttrGrp) return HaveError;
1044 return Error(Lex.getLoc(), "unterminated attribute group");
1045 case lltok::rbrace:
1046 // Finished.
1047 return false;
1048
1049 case lltok::AttrGrpID: {
1050 // Allow a function to reference an attribute group:
1051 //
1052 // define void @foo() #1 { ... }
1053 if (inAttrGrp)
1054 HaveError |=
1055 Error(Lex.getLoc(),
1056 "cannot have an attribute group reference in an attribute group");
1057
1058 unsigned AttrGrpNum = Lex.getUIntVal();
1059 if (inAttrGrp) break;
1060
1061 // Save the reference to the attribute group. We'll fill it in later.
1062 FwdRefAttrGrps.push_back(AttrGrpNum);
1063 break;
1064 }
1065 // Target-dependent attributes:
1066 case lltok::StringConstant: {
1067 if (ParseStringAttribute(B))
1068 return true;
1069 continue;
1070 }
1071
1072 // Target-independent attributes:
1073 case lltok::kw_align: {
1074 // As a hack, we allow function alignment to be initially parsed as an
1075 // attribute on a function declaration/definition or added to an attribute
1076 // group and later moved to the alignment field.
1077 unsigned Alignment;
1078 if (inAttrGrp) {
1079 Lex.Lex();
1080 if (ParseToken(lltok::equal, "expected '=' here") ||
1081 ParseUInt32(Alignment))
1082 return true;
1083 } else {
1084 if (ParseOptionalAlignment(Alignment))
1085 return true;
1086 }
1087 B.addAlignmentAttr(Alignment);
1088 continue;
1089 }
1090 case lltok::kw_alignstack: {
1091 unsigned Alignment;
1092 if (inAttrGrp) {
1093 Lex.Lex();
1094 if (ParseToken(lltok::equal, "expected '=' here") ||
1095 ParseUInt32(Alignment))
1096 return true;
1097 } else {
1098 if (ParseOptionalStackAlignment(Alignment))
1099 return true;
1100 }
1101 B.addStackAlignmentAttr(Alignment);
1102 continue;
1103 }
1104 case lltok::kw_allocsize: {
1105 unsigned ElemSizeArg;
1106 Optional<unsigned> NumElemsArg;
1107 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1108 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1109 return true;
1110 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1111 continue;
1112 }
1113 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1114 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1115 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1116 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1117 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1118 case lltok::kw_inaccessiblememonly:
1119 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1120 case lltok::kw_inaccessiblemem_or_argmemonly:
1121 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1122 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1123 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1124 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1125 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1126 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1127 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1128 case lltok::kw_noimplicitfloat:
1129 B.addAttribute(Attribute::NoImplicitFloat); break;
1130 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1131 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1132 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1133 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1134 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1135 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1136 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1137 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1138 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1139 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1140 case lltok::kw_returns_twice:
1141 B.addAttribute(Attribute::ReturnsTwice); break;
1142 case lltok::kw_speculatable: B.addAttribute(Attribute::Speculatable); break;
1143 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1144 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1145 case lltok::kw_sspstrong:
1146 B.addAttribute(Attribute::StackProtectStrong); break;
1147 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1148 case lltok::kw_sanitize_address:
1149 B.addAttribute(Attribute::SanitizeAddress); break;
1150 case lltok::kw_sanitize_hwaddress:
1151 B.addAttribute(Attribute::SanitizeHWAddress); break;
1152 case lltok::kw_sanitize_thread:
1153 B.addAttribute(Attribute::SanitizeThread); break;
1154 case lltok::kw_sanitize_memory:
1155 B.addAttribute(Attribute::SanitizeMemory); break;
1156 case lltok::kw_strictfp: B.addAttribute(Attribute::StrictFP); break;
1157 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1158 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1159
1160 // Error handling.
1161 case lltok::kw_inreg:
1162 case lltok::kw_signext:
1163 case lltok::kw_zeroext:
1164 HaveError |=
1165 Error(Lex.getLoc(),
1166 "invalid use of attribute on a function");
1167 break;
1168 case lltok::kw_byval:
1169 case lltok::kw_dereferenceable:
1170 case lltok::kw_dereferenceable_or_null:
1171 case lltok::kw_inalloca:
1172 case lltok::kw_nest:
1173 case lltok::kw_noalias:
1174 case lltok::kw_nocapture:
1175 case lltok::kw_nonnull:
1176 case lltok::kw_returned:
1177 case lltok::kw_sret:
1178 case lltok::kw_swifterror:
1179 case lltok::kw_swiftself:
1180 HaveError |=
1181 Error(Lex.getLoc(),
1182 "invalid use of parameter-only attribute on a function");
1183 break;
1184 }
1185
1186 Lex.Lex();
1187 }
1188}
1189
1190//===----------------------------------------------------------------------===//
1191// GlobalValue Reference/Resolution Routines.
1192//===----------------------------------------------------------------------===//
1193
1194static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1195 const std::string &Name) {
1196 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1197 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1198 else
1199 return new GlobalVariable(*M, PTy->getElementType(), false,
1200 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1201 nullptr, GlobalVariable::NotThreadLocal,
1202 PTy->getAddressSpace());
1203}
1204
1205/// GetGlobalVal - Get a value with the specified name or ID, creating a
1206/// forward reference record if needed. This can return null if the value
1207/// exists but does not have the right type.
1208GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1209 LocTy Loc) {
1210 PointerType *PTy = dyn_cast<PointerType>(Ty);
1211 if (!PTy) {
1212 Error(Loc, "global variable reference must have pointer type");
1213 return nullptr;
1214 }
1215
1216 // Look this name up in the normal function symbol table.
1217 GlobalValue *Val =
1218 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1219
1220 // If this is a forward reference for the value, see if we already created a
1221 // forward ref record.
1222 if (!Val) {
1223 auto I = ForwardRefVals.find(Name);
1224 if (I != ForwardRefVals.end())
1225 Val = I->second.first;
1226 }
1227
1228 // If we have the value in the symbol table or fwd-ref table, return it.
1229 if (Val) {
1230 if (Val->getType() == Ty) return Val;
1231 Error(Loc, "'@" + Name + "' defined with type '" +
1232 getTypeString(Val->getType()) + "'");
1233 return nullptr;
1234 }
1235
1236 // Otherwise, create a new forward reference for this value and remember it.
1237 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1238 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1239 return FwdVal;
1240}
1241
1242GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1243 PointerType *PTy = dyn_cast<PointerType>(Ty);
1244 if (!PTy) {
1245 Error(Loc, "global variable reference must have pointer type");
1246 return nullptr;
1247 }
1248
1249 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1250
1251 // If this is a forward reference for the value, see if we already created a
1252 // forward ref record.
1253 if (!Val) {
1254 auto I = ForwardRefValIDs.find(ID);
1255 if (I != ForwardRefValIDs.end())
1256 Val = I->second.first;
1257 }
1258
1259 // If we have the value in the symbol table or fwd-ref table, return it.
1260 if (Val) {
1261 if (Val->getType() == Ty) return Val;
1262 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1263 getTypeString(Val->getType()) + "'");
1264 return nullptr;
1265 }
1266
1267 // Otherwise, create a new forward reference for this value and remember it.
1268 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1269 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1270 return FwdVal;
1271}
1272
1273//===----------------------------------------------------------------------===//
1274// Comdat Reference/Resolution Routines.
1275//===----------------------------------------------------------------------===//
1276
1277Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1278 // Look this name up in the comdat symbol table.
1279 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1280 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1281 if (I != ComdatSymTab.end())
1282 return &I->second;
1283
1284 // Otherwise, create a new forward reference for this value and remember it.
1285 Comdat *C = M->getOrInsertComdat(Name);
1286 ForwardRefComdats[Name] = Loc;
1287 return C;
1288}
1289
1290//===----------------------------------------------------------------------===//
1291// Helper Routines.
1292//===----------------------------------------------------------------------===//
1293
1294/// ParseToken - If the current token has the specified kind, eat it and return
1295/// success. Otherwise, emit the specified error and return failure.
1296bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1297 if (Lex.getKind() != T)
1298 return TokError(ErrMsg);
1299 Lex.Lex();
1300 return false;
1301}
1302
1303/// ParseStringConstant
1304/// ::= StringConstant
1305bool LLParser::ParseStringConstant(std::string &Result) {
1306 if (Lex.getKind() != lltok::StringConstant)
1307 return TokError("expected string constant");
1308 Result = Lex.getStrVal();
1309 Lex.Lex();
1310 return false;
1311}
1312
1313/// ParseUInt32
1314/// ::= uint32
1315bool LLParser::ParseUInt32(uint32_t &Val) {
1316 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1317 return TokError("expected integer");
1318 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1319 if (Val64 != unsigned(Val64))
1320 return TokError("expected 32-bit integer (too large)");
1321 Val = Val64;
1322 Lex.Lex();
1323 return false;
1324}
1325
1326/// ParseUInt64
1327/// ::= uint64
1328bool LLParser::ParseUInt64(uint64_t &Val) {
1329 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1330 return TokError("expected integer");
1331 Val = Lex.getAPSIntVal().getLimitedValue();
1332 Lex.Lex();
1333 return false;
1334}
1335
1336/// ParseTLSModel
1337/// := 'localdynamic'
1338/// := 'initialexec'
1339/// := 'localexec'
1340bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1341 switch (Lex.getKind()) {
1342 default:
1343 return TokError("expected localdynamic, initialexec or localexec");
1344 case lltok::kw_localdynamic:
1345 TLM = GlobalVariable::LocalDynamicTLSModel;
1346 break;
1347 case lltok::kw_initialexec:
1348 TLM = GlobalVariable::InitialExecTLSModel;
1349 break;
1350 case lltok::kw_localexec:
1351 TLM = GlobalVariable::LocalExecTLSModel;
1352 break;
1353 }
1354
1355 Lex.Lex();
1356 return false;
1357}
1358
1359/// ParseOptionalThreadLocal
1360/// := /*empty*/
1361/// := 'thread_local'
1362/// := 'thread_local' '(' tlsmodel ')'
1363bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1364 TLM = GlobalVariable::NotThreadLocal;
1365 if (!EatIfPresent(lltok::kw_thread_local))
1366 return false;
1367
1368 TLM = GlobalVariable::GeneralDynamicTLSModel;
1369 if (Lex.getKind() == lltok::lparen) {
1370 Lex.Lex();
1371 return ParseTLSModel(TLM) ||
1372 ParseToken(lltok::rparen, "expected ')' after thread local model");
1373 }
1374 return false;
1375}
1376
1377/// ParseOptionalAddrSpace
1378/// := /*empty*/
1379/// := 'addrspace' '(' uint32 ')'
1380bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1381 AddrSpace = 0;
1382 if (!EatIfPresent(lltok::kw_addrspace))
1383 return false;
1384 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1385 ParseUInt32(AddrSpace) ||
1386 ParseToken(lltok::rparen, "expected ')' in address space");
1387}
1388
1389/// ParseStringAttribute
1390/// := StringConstant
1391/// := StringConstant '=' StringConstant
1392bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1393 std::string Attr = Lex.getStrVal();
1394 Lex.Lex();
1395 std::string Val;
1396 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1397 return true;
1398 B.addAttribute(Attr, Val);
1399 return false;
1400}
1401
1402/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1403bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1404 bool HaveError = false;
1405
1406 B.clear();
1407
1408 while (true) {
1409 lltok::Kind Token = Lex.getKind();
1410 switch (Token) {
1411 default: // End of attributes.
1412 return HaveError;
1413 case lltok::StringConstant: {
1414 if (ParseStringAttribute(B))
1415 return true;
1416 continue;
1417 }
1418 case lltok::kw_align: {
1419 unsigned Alignment;
1420 if (ParseOptionalAlignment(Alignment))
1421 return true;
1422 B.addAlignmentAttr(Alignment);
1423 continue;
1424 }
1425 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1426 case lltok::kw_dereferenceable: {
1427 uint64_t Bytes;
1428 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1429 return true;
1430 B.addDereferenceableAttr(Bytes);
1431 continue;
1432 }
1433 case lltok::kw_dereferenceable_or_null: {
1434 uint64_t Bytes;
1435 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1436 return true;
1437 B.addDereferenceableOrNullAttr(Bytes);
1438 continue;
1439 }
1440 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1441 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1442 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1443 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1444 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1445 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1446 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1447 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1448 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1449 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1450 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1451 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1452 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1453 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1454 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1455
1456 case lltok::kw_alignstack:
1457 case lltok::kw_alwaysinline:
1458 case lltok::kw_argmemonly:
1459 case lltok::kw_builtin:
1460 case lltok::kw_inlinehint:
1461 case lltok::kw_jumptable:
1462 case lltok::kw_minsize:
1463 case lltok::kw_naked:
1464 case lltok::kw_nobuiltin:
1465 case lltok::kw_noduplicate:
1466 case lltok::kw_noimplicitfloat:
1467 case lltok::kw_noinline:
1468 case lltok::kw_nonlazybind:
1469 case lltok::kw_noredzone:
1470 case lltok::kw_noreturn:
1471 case lltok::kw_nounwind:
1472 case lltok::kw_optnone:
1473 case lltok::kw_optsize:
1474 case lltok::kw_returns_twice:
1475 case lltok::kw_sanitize_address:
1476 case lltok::kw_sanitize_hwaddress:
1477 case lltok::kw_sanitize_memory:
1478 case lltok::kw_sanitize_thread:
1479 case lltok::kw_ssp:
1480 case lltok::kw_sspreq:
1481 case lltok::kw_sspstrong:
1482 case lltok::kw_safestack:
1483 case lltok::kw_strictfp:
1484 case lltok::kw_uwtable:
1485 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1486 break;
1487 }
1488
1489 Lex.Lex();
1490 }
1491}
1492
1493/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1494bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1495 bool HaveError = false;
1496
1497 B.clear();
1498
1499 while (true) {
1500 lltok::Kind Token = Lex.getKind();
1501 switch (Token) {
1502 default: // End of attributes.
1503 return HaveError;
1504 case lltok::StringConstant: {
1505 if (ParseStringAttribute(B))
1506 return true;
1507 continue;
1508 }
1509 case lltok::kw_dereferenceable: {
1510 uint64_t Bytes;
1511 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1512 return true;
1513 B.addDereferenceableAttr(Bytes);
1514 continue;
1515 }
1516 case lltok::kw_dereferenceable_or_null: {
1517 uint64_t Bytes;
1518 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1519 return true;
1520 B.addDereferenceableOrNullAttr(Bytes);
1521 continue;
1522 }
1523 case lltok::kw_align: {
1524 unsigned Alignment;
1525 if (ParseOptionalAlignment(Alignment))
1526 return true;
1527 B.addAlignmentAttr(Alignment);
1528 continue;
1529 }
1530 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1531 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1532 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1533 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1534 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1535
1536 // Error handling.
1537 case lltok::kw_byval:
1538 case lltok::kw_inalloca:
1539 case lltok::kw_nest:
1540 case lltok::kw_nocapture:
1541 case lltok::kw_returned:
1542 case lltok::kw_sret:
1543 case lltok::kw_swifterror:
1544 case lltok::kw_swiftself:
1545 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1546 break;
1547
1548 case lltok::kw_alignstack:
1549 case lltok::kw_alwaysinline:
1550 case lltok::kw_argmemonly:
1551 case lltok::kw_builtin:
1552 case lltok::kw_cold:
1553 case lltok::kw_inlinehint:
1554 case lltok::kw_jumptable:
1555 case lltok::kw_minsize:
1556 case lltok::kw_naked:
1557 case lltok::kw_nobuiltin:
1558 case lltok::kw_noduplicate:
1559 case lltok::kw_noimplicitfloat:
1560 case lltok::kw_noinline:
1561 case lltok::kw_nonlazybind:
1562 case lltok::kw_noredzone:
1563 case lltok::kw_noreturn:
1564 case lltok::kw_nounwind:
1565 case lltok::kw_optnone:
1566 case lltok::kw_optsize:
1567 case lltok::kw_returns_twice:
1568 case lltok::kw_sanitize_address:
1569 case lltok::kw_sanitize_hwaddress:
1570 case lltok::kw_sanitize_memory:
1571 case lltok::kw_sanitize_thread:
1572 case lltok::kw_ssp:
1573 case lltok::kw_sspreq:
1574 case lltok::kw_sspstrong:
1575 case lltok::kw_safestack:
1576 case lltok::kw_strictfp:
1577 case lltok::kw_uwtable:
1578 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1579 break;
1580
1581 case lltok::kw_readnone:
1582 case lltok::kw_readonly:
1583 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1584 }
1585
1586 Lex.Lex();
1587 }
1588}
1589
1590static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1591 HasLinkage = true;
1592 switch (Kind) {
1593 default:
1594 HasLinkage = false;
1595 return GlobalValue::ExternalLinkage;
1596 case lltok::kw_private:
1597 return GlobalValue::PrivateLinkage;
1598 case lltok::kw_internal:
1599 return GlobalValue::InternalLinkage;
1600 case lltok::kw_weak:
1601 return GlobalValue::WeakAnyLinkage;
1602 case lltok::kw_weak_odr:
1603 return GlobalValue::WeakODRLinkage;
1604 case lltok::kw_linkonce:
1605 return GlobalValue::LinkOnceAnyLinkage;
1606 case lltok::kw_linkonce_odr:
1607 return GlobalValue::LinkOnceODRLinkage;
1608 case lltok::kw_available_externally:
1609 return GlobalValue::AvailableExternallyLinkage;
1610 case lltok::kw_appending:
1611 return GlobalValue::AppendingLinkage;
1612 case lltok::kw_common:
1613 return GlobalValue::CommonLinkage;
1614 case lltok::kw_extern_weak:
1615 return GlobalValue::ExternalWeakLinkage;
1616 case lltok::kw_external:
1617 return GlobalValue::ExternalLinkage;
1618 }
1619}
1620
1621/// ParseOptionalLinkage
1622/// ::= /*empty*/
1623/// ::= 'private'
1624/// ::= 'internal'
1625/// ::= 'weak'
1626/// ::= 'weak_odr'
1627/// ::= 'linkonce'
1628/// ::= 'linkonce_odr'
1629/// ::= 'available_externally'
1630/// ::= 'appending'
1631/// ::= 'common'
1632/// ::= 'extern_weak'
1633/// ::= 'external'
1634bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1635 unsigned &Visibility,
1636 unsigned &DLLStorageClass,
1637 bool &DSOLocal) {
1638 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1639 if (HasLinkage)
1640 Lex.Lex();
1641 ParseOptionalDSOLocal(DSOLocal);
1642 ParseOptionalVisibility(Visibility);
1643 ParseOptionalDLLStorageClass(DLLStorageClass);
1644
1645 if (DSOLocal && DLLStorageClass == GlobalValue::DLLImportStorageClass) {
1646 return Error(Lex.getLoc(), "dso_location and DLL-StorageClass mismatch");
1647 }
1648
1649 return false;
1650}
1651
1652void LLParser::ParseOptionalDSOLocal(bool &DSOLocal) {
1653 switch (Lex.getKind()) {
1654 default:
1655 DSOLocal = false;
1656 break;
1657 case lltok::kw_dso_local:
1658 DSOLocal = true;
1659 Lex.Lex();
1660 break;
1661 case lltok::kw_dso_preemptable:
1662 DSOLocal = false;
1663 Lex.Lex();
1664 break;
1665 }
1666}
1667
1668/// ParseOptionalVisibility
1669/// ::= /*empty*/
1670/// ::= 'default'
1671/// ::= 'hidden'
1672/// ::= 'protected'
1673///
1674void LLParser::ParseOptionalVisibility(unsigned &Res) {
1675 switch (Lex.getKind()) {
1676 default:
1677 Res = GlobalValue::DefaultVisibility;
1678 return;
1679 case lltok::kw_default:
1680 Res = GlobalValue::DefaultVisibility;
1681 break;
1682 case lltok::kw_hidden:
1683 Res = GlobalValue::HiddenVisibility;
1684 break;
1685 case lltok::kw_protected:
1686 Res = GlobalValue::ProtectedVisibility;
1687 break;
1688 }
1689 Lex.Lex();
1690}
1691
1692/// ParseOptionalDLLStorageClass
1693/// ::= /*empty*/
1694/// ::= 'dllimport'
1695/// ::= 'dllexport'
1696///
1697void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1698 switch (Lex.getKind()) {
1699 default:
1700 Res = GlobalValue::DefaultStorageClass;
1701 return;
1702 case lltok::kw_dllimport:
1703 Res = GlobalValue::DLLImportStorageClass;
1704 break;
1705 case lltok::kw_dllexport:
1706 Res = GlobalValue::DLLExportStorageClass;
1707 break;
1708 }
1709 Lex.Lex();
1710}
1711
1712/// ParseOptionalCallingConv
1713/// ::= /*empty*/
1714/// ::= 'ccc'
1715/// ::= 'fastcc'
1716/// ::= 'intel_ocl_bicc'
1717/// ::= 'coldcc'
1718/// ::= 'x86_stdcallcc'
1719/// ::= 'x86_fastcallcc'
1720/// ::= 'x86_thiscallcc'
1721/// ::= 'x86_vectorcallcc'
1722/// ::= 'arm_apcscc'
1723/// ::= 'arm_aapcscc'
1724/// ::= 'arm_aapcs_vfpcc'
1725/// ::= 'msp430_intrcc'
1726/// ::= 'avr_intrcc'
1727/// ::= 'avr_signalcc'
1728/// ::= 'ptx_kernel'
1729/// ::= 'ptx_device'
1730/// ::= 'spir_func'
1731/// ::= 'spir_kernel'
1732/// ::= 'x86_64_sysvcc'
1733/// ::= 'win64cc'
1734/// ::= 'webkit_jscc'
1735/// ::= 'anyregcc'
1736/// ::= 'preserve_mostcc'
1737/// ::= 'preserve_allcc'
1738/// ::= 'ghccc'
1739/// ::= 'swiftcc'
1740/// ::= 'x86_intrcc'
1741/// ::= 'hhvmcc'
1742/// ::= 'hhvm_ccc'
1743/// ::= 'cxx_fast_tlscc'
1744/// ::= 'amdgpu_vs'
1745/// ::= 'amdgpu_ls'
1746/// ::= 'amdgpu_hs'
1747/// ::= 'amdgpu_es'
1748/// ::= 'amdgpu_gs'
1749/// ::= 'amdgpu_ps'
1750/// ::= 'amdgpu_cs'
1751/// ::= 'amdgpu_kernel'
1752/// ::= 'cc' UINT
1753///
1754bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1755 switch (Lex.getKind()) {
1756 default: CC = CallingConv::C; return false;
1757 case lltok::kw_ccc: CC = CallingConv::C; break;
1758 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1759 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1760 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1761 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1762 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1763 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1764 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1765 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1766 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1767 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1768 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1769 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1770 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1771 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1772 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1773 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1774 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1775 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1776 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1777 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1778 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1779 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1780 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1781 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1782 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1783 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1784 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1785 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1786 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1787 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1788 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1789 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1790 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1791 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1792 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1793 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1794 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1795 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1796 case lltok::kw_cc: {
1797 Lex.Lex();
1798 return ParseUInt32(CC);
1799 }
1800 }
1801
1802 Lex.Lex();
1803 return false;
1804}
1805
1806/// ParseMetadataAttachment
1807/// ::= !dbg !42
1808bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1809 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~svn325118/lib/AsmParser/LLParser.cpp"
, 1809, __extension__ __PRETTY_FUNCTION__))
;
1810
1811 std::string Name = Lex.getStrVal();
1812 Kind = M->getMDKindID(Name);
1813 Lex.Lex();
1814
1815 return ParseMDNode(MD);
1816}
1817
1818/// ParseInstructionMetadata
1819/// ::= !dbg !42 (',' !dbg !57)*
1820bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1821 do {
1822 if (Lex.getKind() != lltok::MetadataVar)
1823 return TokError("expected metadata after comma");
1824
1825 unsigned MDK;
1826 MDNode *N;
1827 if (ParseMetadataAttachment(MDK, N))
1828 return true;
1829
1830 Inst.setMetadata(MDK, N);
1831 if (MDK == LLVMContext::MD_tbaa)
1832 InstsWithTBAATag.push_back(&Inst);
1833
1834 // If this is the end of the list, we're done.
1835 } while (EatIfPresent(lltok::comma));
1836 return false;
1837}
1838
1839/// ParseGlobalObjectMetadataAttachment
1840/// ::= !dbg !57
1841bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1842 unsigned MDK;
1843 MDNode *N;
1844 if (ParseMetadataAttachment(MDK, N))
1845 return true;
1846
1847 GO.addMetadata(MDK, *N);
1848 return false;
1849}
1850
1851/// ParseOptionalFunctionMetadata
1852/// ::= (!dbg !57)*
1853bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1854 while (Lex.getKind() == lltok::MetadataVar)
1855 if (ParseGlobalObjectMetadataAttachment(F))
1856 return true;
1857 return false;
1858}
1859
1860/// ParseOptionalAlignment
1861/// ::= /* empty */
1862/// ::= 'align' 4
1863bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1864 Alignment = 0;
1865 if (!EatIfPresent(lltok::kw_align))
1866 return false;
1867 LocTy AlignLoc = Lex.getLoc();
1868 if (ParseUInt32(Alignment)) return true;
1869 if (!isPowerOf2_32(Alignment))
1870 return Error(AlignLoc, "alignment is not a power of two");
1871 if (Alignment > Value::MaximumAlignment)
1872 return Error(AlignLoc, "huge alignments are not supported yet");
1873 return false;
1874}
1875
1876/// ParseOptionalDerefAttrBytes
1877/// ::= /* empty */
1878/// ::= AttrKind '(' 4 ')'
1879///
1880/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1881bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1882 uint64_t &Bytes) {
1883 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~svn325118/lib/AsmParser/LLParser.cpp"
, 1885, __extension__ __PRETTY_FUNCTION__))
1884 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~svn325118/lib/AsmParser/LLParser.cpp"
, 1885, __extension__ __PRETTY_FUNCTION__))
1885 "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~svn325118/lib/AsmParser/LLParser.cpp"
, 1885, __extension__ __PRETTY_FUNCTION__))
;
1886
1887 Bytes = 0;
1888 if (!EatIfPresent(AttrKind))
1889 return false;
1890 LocTy ParenLoc = Lex.getLoc();
1891 if (!EatIfPresent(lltok::lparen))
1892 return Error(ParenLoc, "expected '('");
1893 LocTy DerefLoc = Lex.getLoc();
1894 if (ParseUInt64(Bytes)) return true;
1895 ParenLoc = Lex.getLoc();
1896 if (!EatIfPresent(lltok::rparen))
1897 return Error(ParenLoc, "expected ')'");
1898 if (!Bytes)
1899 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1900 return false;
1901}
1902
1903/// ParseOptionalCommaAlign
1904/// ::=
1905/// ::= ',' align 4
1906///
1907/// This returns with AteExtraComma set to true if it ate an excess comma at the
1908/// end.
1909bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1910 bool &AteExtraComma) {
1911 AteExtraComma = false;
1912 while (EatIfPresent(lltok::comma)) {
1913 // Metadata at the end is an early exit.
1914 if (Lex.getKind() == lltok::MetadataVar) {
1915 AteExtraComma = true;
1916 return false;
1917 }
1918
1919 if (Lex.getKind() != lltok::kw_align)
1920 return Error(Lex.getLoc(), "expected metadata or 'align'");
1921
1922 if (ParseOptionalAlignment(Alignment)) return true;
1923 }
1924
1925 return false;
1926}
1927
1928/// ParseOptionalCommaAddrSpace
1929/// ::=
1930/// ::= ',' addrspace(1)
1931///
1932/// This returns with AteExtraComma set to true if it ate an excess comma at the
1933/// end.
1934bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
1935 LocTy &Loc,
1936 bool &AteExtraComma) {
1937 AteExtraComma = false;
1938 while (EatIfPresent(lltok::comma)) {
1939 // Metadata at the end is an early exit.
1940 if (Lex.getKind() == lltok::MetadataVar) {
1941 AteExtraComma = true;
1942 return false;
1943 }
1944
1945 Loc = Lex.getLoc();
1946 if (Lex.getKind() != lltok::kw_addrspace)
1947 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
1948
1949 if (ParseOptionalAddrSpace(AddrSpace))
1950 return true;
1951 }
1952
1953 return false;
1954}
1955
1956bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1957 Optional<unsigned> &HowManyArg) {
1958 Lex.Lex();
1959
1960 auto StartParen = Lex.getLoc();
1961 if (!EatIfPresent(lltok::lparen))
1962 return Error(StartParen, "expected '('");
1963
1964 if (ParseUInt32(BaseSizeArg))
1965 return true;
1966
1967 if (EatIfPresent(lltok::comma)) {
1968 auto HowManyAt = Lex.getLoc();
1969 unsigned HowMany;
1970 if (ParseUInt32(HowMany))
1971 return true;
1972 if (HowMany == BaseSizeArg)
1973 return Error(HowManyAt,
1974 "'allocsize' indices can't refer to the same parameter");
1975 HowManyArg = HowMany;
1976 } else
1977 HowManyArg = None;
1978
1979 auto EndParen = Lex.getLoc();
1980 if (!EatIfPresent(lltok::rparen))
1981 return Error(EndParen, "expected ')'");
1982 return false;
1983}
1984
1985/// ParseScopeAndOrdering
1986/// if isAtomic: ::= SyncScope? AtomicOrdering
1987/// else: ::=
1988///
1989/// This sets Scope and Ordering to the parsed values.
1990bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
1991 AtomicOrdering &Ordering) {
1992 if (!isAtomic)
1993 return false;
1994
1995 return ParseScope(SSID) || ParseOrdering(Ordering);
1996}
1997
1998/// ParseScope
1999/// ::= syncscope("singlethread" | "<target scope>")?
2000///
2001/// This sets synchronization scope ID to the ID of the parsed value.
2002bool LLParser::ParseScope(SyncScope::ID &SSID) {
2003 SSID = SyncScope::System;
2004 if (EatIfPresent(lltok::kw_syncscope)) {
2005 auto StartParenAt = Lex.getLoc();
2006 if (!EatIfPresent(lltok::lparen))
2007 return Error(StartParenAt, "Expected '(' in syncscope");
2008
2009 std::string SSN;
2010 auto SSNAt = Lex.getLoc();
2011 if (ParseStringConstant(SSN))
2012 return Error(SSNAt, "Expected synchronization scope name");
2013
2014 auto EndParenAt = Lex.getLoc();
2015 if (!EatIfPresent(lltok::rparen))
2016 return Error(EndParenAt, "Expected ')' in syncscope");
2017
2018 SSID = Context.getOrInsertSyncScopeID(SSN);
2019 }
2020
2021 return false;
2022}
2023
2024/// ParseOrdering
2025/// ::= AtomicOrdering
2026///
2027/// This sets Ordering to the parsed value.
2028bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
2029 switch (Lex.getKind()) {
2030 default: return TokError("Expected ordering on atomic instruction");
2031 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
2032 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
2033 // Not specified yet:
2034 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
2035 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
2036 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
2037 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
2038 case lltok::kw_seq_cst:
2039 Ordering = AtomicOrdering::SequentiallyConsistent;
2040 break;
2041 }
2042 Lex.Lex();
2043 return false;
2044}
2045
2046/// ParseOptionalStackAlignment
2047/// ::= /* empty */
2048/// ::= 'alignstack' '(' 4 ')'
2049bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2050 Alignment = 0;
2051 if (!EatIfPresent(lltok::kw_alignstack))
2052 return false;
2053 LocTy ParenLoc = Lex.getLoc();
2054 if (!EatIfPresent(lltok::lparen))
2055 return Error(ParenLoc, "expected '('");
2056 LocTy AlignLoc = Lex.getLoc();
2057 if (ParseUInt32(Alignment)) return true;
2058 ParenLoc = Lex.getLoc();
2059 if (!EatIfPresent(lltok::rparen))
2060 return Error(ParenLoc, "expected ')'");
2061 if (!isPowerOf2_32(Alignment))
2062 return Error(AlignLoc, "stack alignment is not a power of two");
2063 return false;
2064}
2065
2066/// ParseIndexList - This parses the index list for an insert/extractvalue
2067/// instruction. This sets AteExtraComma in the case where we eat an extra
2068/// comma at the end of the line and find that it is followed by metadata.
2069/// Clients that don't allow metadata can call the version of this function that
2070/// only takes one argument.
2071///
2072/// ParseIndexList
2073/// ::= (',' uint32)+
2074///
2075bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2076 bool &AteExtraComma) {
2077 AteExtraComma = false;
2078
2079 if (Lex.getKind() != lltok::comma)
2080 return TokError("expected ',' as start of index list");
2081
2082 while (EatIfPresent(lltok::comma)) {
2083 if (Lex.getKind() == lltok::MetadataVar) {
2084 if (Indices.empty()) return TokError("expected index");
2085 AteExtraComma = true;
2086 return false;
2087 }
2088 unsigned Idx = 0;
2089 if (ParseUInt32(Idx)) return true;
2090 Indices.push_back(Idx);
2091 }
2092
2093 return false;
2094}
2095
2096//===----------------------------------------------------------------------===//
2097// Type Parsing.
2098//===----------------------------------------------------------------------===//
2099
2100/// ParseType - Parse a type.
2101bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2102 SMLoc TypeLoc = Lex.getLoc();
2103 switch (Lex.getKind()) {
2104 default:
2105 return TokError(Msg);
2106 case lltok::Type:
2107 // Type ::= 'float' | 'void' (etc)
2108 Result = Lex.getTyVal();
2109 Lex.Lex();
2110 break;
2111 case lltok::lbrace:
2112 // Type ::= StructType
2113 if (ParseAnonStructType(Result, false))
2114 return true;
2115 break;
2116 case lltok::lsquare:
2117 // Type ::= '[' ... ']'
2118 Lex.Lex(); // eat the lsquare.
2119 if (ParseArrayVectorType(Result, false))
2120 return true;
2121 break;
2122 case lltok::less: // Either vector or packed struct.
2123 // Type ::= '<' ... '>'
2124 Lex.Lex();
2125 if (Lex.getKind() == lltok::lbrace) {
2126 if (ParseAnonStructType(Result, true) ||
2127 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2128 return true;
2129 } else if (ParseArrayVectorType(Result, true))
2130 return true;
2131 break;
2132 case lltok::LocalVar: {
2133 // Type ::= %foo
2134 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2135
2136 // If the type hasn't been defined yet, create a forward definition and
2137 // remember where that forward def'n was seen (in case it never is defined).
2138 if (!Entry.first) {
2139 Entry.first = StructType::create(Context, Lex.getStrVal());
2140 Entry.second = Lex.getLoc();
2141 }
2142 Result = Entry.first;
2143 Lex.Lex();
2144 break;
2145 }
2146
2147 case lltok::LocalVarID: {
2148 // Type ::= %4
2149 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2150
2151 // If the type hasn't been defined yet, create a forward definition and
2152 // remember where that forward def'n was seen (in case it never is defined).
2153 if (!Entry.first) {
2154 Entry.first = StructType::create(Context);
2155 Entry.second = Lex.getLoc();
2156 }
2157 Result = Entry.first;
2158 Lex.Lex();
2159 break;
2160 }
2161 }
2162
2163 // Parse the type suffixes.
2164 while (true) {
2165 switch (Lex.getKind()) {
2166 // End of type.
2167 default:
2168 if (!AllowVoid && Result->isVoidTy())
2169 return Error(TypeLoc, "void type only allowed for function results");
2170 return false;
2171
2172 // Type ::= Type '*'
2173 case lltok::star:
2174 if (Result->isLabelTy())
2175 return TokError("basic block pointers are invalid");
2176 if (Result->isVoidTy())
2177 return TokError("pointers to void are invalid - use i8* instead");
2178 if (!PointerType::isValidElementType(Result))
2179 return TokError("pointer to this type is invalid");
2180 Result = PointerType::getUnqual(Result);
2181 Lex.Lex();
2182 break;
2183
2184 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2185 case lltok::kw_addrspace: {
2186 if (Result->isLabelTy())
2187 return TokError("basic block pointers are invalid");
2188 if (Result->isVoidTy())
2189 return TokError("pointers to void are invalid; use i8* instead");
2190 if (!PointerType::isValidElementType(Result))
2191 return TokError("pointer to this type is invalid");
2192 unsigned AddrSpace;
2193 if (ParseOptionalAddrSpace(AddrSpace) ||
2194 ParseToken(lltok::star, "expected '*' in address space"))
2195 return true;
2196
2197 Result = PointerType::get(Result, AddrSpace);
2198 break;
2199 }
2200
2201 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2202 case lltok::lparen:
2203 if (ParseFunctionType(Result))
2204 return true;
2205 break;
2206 }
2207 }
2208}
2209
2210/// ParseParameterList
2211/// ::= '(' ')'
2212/// ::= '(' Arg (',' Arg)* ')'
2213/// Arg
2214/// ::= Type OptionalAttributes Value OptionalAttributes
2215bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2216 PerFunctionState &PFS, bool IsMustTailCall,
2217 bool InVarArgsFunc) {
2218 if (ParseToken(lltok::lparen, "expected '(' in call"))
2219 return true;
2220
2221 while (Lex.getKind() != lltok::rparen) {
2222 // If this isn't the first argument, we need a comma.
2223 if (!ArgList.empty() &&
2224 ParseToken(lltok::comma, "expected ',' in argument list"))
2225 return true;
2226
2227 // Parse an ellipsis if this is a musttail call in a variadic function.
2228 if (Lex.getKind() == lltok::dotdotdot) {
2229 const char *Msg = "unexpected ellipsis in argument list for ";
2230 if (!IsMustTailCall)
2231 return TokError(Twine(Msg) + "non-musttail call");
2232 if (!InVarArgsFunc)
2233 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2234 Lex.Lex(); // Lex the '...', it is purely for readability.
2235 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2236 }
2237
2238 // Parse the argument.
2239 LocTy ArgLoc;
2240 Type *ArgTy = nullptr;
2241 AttrBuilder ArgAttrs;
2242 Value *V;
2243 if (ParseType(ArgTy, ArgLoc))
2244 return true;
2245
2246 if (ArgTy->isMetadataTy()) {
2247 if (ParseMetadataAsValue(V, PFS))
2248 return true;
2249 } else {
2250 // Otherwise, handle normal operands.
2251 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2252 return true;
2253 }
2254 ArgList.push_back(ParamInfo(
2255 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2256 }
2257
2258 if (IsMustTailCall && InVarArgsFunc)
2259 return TokError("expected '...' at end of argument list for musttail call "
2260 "in varargs function");
2261
2262 Lex.Lex(); // Lex the ')'.
2263 return false;
2264}
2265
2266/// ParseOptionalOperandBundles
2267/// ::= /*empty*/
2268/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2269///
2270/// OperandBundle
2271/// ::= bundle-tag '(' ')'
2272/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2273///
2274/// bundle-tag ::= String Constant
2275bool LLParser::ParseOptionalOperandBundles(
2276 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2277 LocTy BeginLoc = Lex.getLoc();
2278 if (!EatIfPresent(lltok::lsquare))
2279 return false;
2280
2281 while (Lex.getKind() != lltok::rsquare) {
2282 // If this isn't the first operand bundle, we need a comma.
2283 if (!BundleList.empty() &&
2284 ParseToken(lltok::comma, "expected ',' in input list"))
2285 return true;
2286
2287 std::string Tag;
2288 if (ParseStringConstant(Tag))
2289 return true;
2290
2291 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2292 return true;
2293
2294 std::vector<Value *> Inputs;
2295 while (Lex.getKind() != lltok::rparen) {
2296 // If this isn't the first input, we need a comma.
2297 if (!Inputs.empty() &&
2298 ParseToken(lltok::comma, "expected ',' in input list"))
2299 return true;
2300
2301 Type *Ty = nullptr;
2302 Value *Input = nullptr;
2303 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2304 return true;
2305 Inputs.push_back(Input);
2306 }
2307
2308 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2309
2310 Lex.Lex(); // Lex the ')'.
2311 }
2312
2313 if (BundleList.empty())
2314 return Error(BeginLoc, "operand bundle set must not be empty");
2315
2316 Lex.Lex(); // Lex the ']'.
2317 return false;
2318}
2319
2320/// ParseArgumentList - Parse the argument list for a function type or function
2321/// prototype.
2322/// ::= '(' ArgTypeListI ')'
2323/// ArgTypeListI
2324/// ::= /*empty*/
2325/// ::= '...'
2326/// ::= ArgTypeList ',' '...'
2327/// ::= ArgType (',' ArgType)*
2328///
2329bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2330 bool &isVarArg){
2331 isVarArg = false;
2332 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~svn325118/lib/AsmParser/LLParser.cpp"
, 2332, __extension__ __PRETTY_FUNCTION__))
;
2333 Lex.Lex(); // eat the (.
2334
2335 if (Lex.getKind() == lltok::rparen) {
2336 // empty
2337 } else if (Lex.getKind() == lltok::dotdotdot) {
2338 isVarArg = true;
2339 Lex.Lex();
2340 } else {
2341 LocTy TypeLoc = Lex.getLoc();
2342 Type *ArgTy = nullptr;
2343 AttrBuilder Attrs;
2344 std::string Name;
2345
2346 if (ParseType(ArgTy) ||
2347 ParseOptionalParamAttrs(Attrs)) return true;
2348
2349 if (ArgTy->isVoidTy())
2350 return Error(TypeLoc, "argument can not have void type");
2351
2352 if (Lex.getKind() == lltok::LocalVar) {
2353 Name = Lex.getStrVal();
2354 Lex.Lex();
2355 }
2356
2357 if (!FunctionType::isValidArgumentType(ArgTy))
2358 return Error(TypeLoc, "invalid type for function argument");
2359
2360 ArgList.emplace_back(TypeLoc, ArgTy,
2361 AttributeSet::get(ArgTy->getContext(), Attrs),
2362 std::move(Name));
2363
2364 while (EatIfPresent(lltok::comma)) {
2365 // Handle ... at end of arg list.
2366 if (EatIfPresent(lltok::dotdotdot)) {
2367 isVarArg = true;
2368 break;
2369 }
2370
2371 // Otherwise must be an argument type.
2372 TypeLoc = Lex.getLoc();
2373 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2374
2375 if (ArgTy->isVoidTy())
2376 return Error(TypeLoc, "argument can not have void type");
2377
2378 if (Lex.getKind() == lltok::LocalVar) {
2379 Name = Lex.getStrVal();
2380 Lex.Lex();
2381 } else {
2382 Name = "";
2383 }
2384
2385 if (!ArgTy->isFirstClassType())
2386 return Error(TypeLoc, "invalid type for function argument");
2387
2388 ArgList.emplace_back(TypeLoc, ArgTy,
2389 AttributeSet::get(ArgTy->getContext(), Attrs),
2390 std::move(Name));
2391 }
2392 }
2393
2394 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2395}
2396
2397/// ParseFunctionType
2398/// ::= Type ArgumentList OptionalAttrs
2399bool LLParser::ParseFunctionType(Type *&Result) {
2400 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~svn325118/lib/AsmParser/LLParser.cpp"
, 2400, __extension__ __PRETTY_FUNCTION__))
;
2401
2402 if (!FunctionType::isValidReturnType(Result))
2403 return TokError("invalid function return type");
2404
2405 SmallVector<ArgInfo, 8> ArgList;
2406 bool isVarArg;
2407 if (ParseArgumentList(ArgList, isVarArg))
2408 return true;
2409
2410 // Reject names on the arguments lists.
2411 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2412 if (!ArgList[i].Name.empty())
2413 return Error(ArgList[i].Loc, "argument name invalid in function type");
2414 if (ArgList[i].Attrs.hasAttributes())
2415 return Error(ArgList[i].Loc,
2416 "argument attributes invalid in function type");
2417 }
2418
2419 SmallVector<Type*, 16> ArgListTy;
2420 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2421 ArgListTy.push_back(ArgList[i].Ty);
2422
2423 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2424 return false;
2425}
2426
2427/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2428/// other structs.
2429bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2430 SmallVector<Type*, 8> Elts;
2431 if (ParseStructBody(Elts)) return true;
2432
2433 Result = StructType::get(Context, Elts, Packed);
2434 return false;
2435}
2436
2437/// ParseStructDefinition - Parse a struct in a 'type' definition.
2438bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2439 std::pair<Type*, LocTy> &Entry,
2440 Type *&ResultTy) {
2441 // If the type was already defined, diagnose the redefinition.
2442 if (Entry.first && !Entry.second.isValid())
2443 return Error(TypeLoc, "redefinition of type");
2444
2445 // If we have opaque, just return without filling in the definition for the
2446 // struct. This counts as a definition as far as the .ll file goes.
2447 if (EatIfPresent(lltok::kw_opaque)) {
2448 // This type is being defined, so clear the location to indicate this.
2449 Entry.second = SMLoc();
2450
2451 // If this type number has never been uttered, create it.
2452 if (!Entry.first)
2453 Entry.first = StructType::create(Context, Name);
2454 ResultTy = Entry.first;
2455 return false;
2456 }
2457
2458 // If the type starts with '<', then it is either a packed struct or a vector.
2459 bool isPacked = EatIfPresent(lltok::less);
2460
2461 // If we don't have a struct, then we have a random type alias, which we
2462 // accept for compatibility with old files. These types are not allowed to be
2463 // forward referenced and not allowed to be recursive.
2464 if (Lex.getKind() != lltok::lbrace) {
2465 if (Entry.first)
2466 return Error(TypeLoc, "forward references to non-struct type");
2467
2468 ResultTy = nullptr;
2469 if (isPacked)
2470 return ParseArrayVectorType(ResultTy, true);
2471 return ParseType(ResultTy);
2472 }
2473
2474 // This type is being defined, so clear the location to indicate this.
2475 Entry.second = SMLoc();
2476
2477 // If this type number has never been uttered, create it.
2478 if (!Entry.first)
2479 Entry.first = StructType::create(Context, Name);
2480
2481 StructType *STy = cast<StructType>(Entry.first);
2482
2483 SmallVector<Type*, 8> Body;
2484 if (ParseStructBody(Body) ||
2485 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2486 return true;
2487
2488 STy->setBody(Body, isPacked);
2489 ResultTy = STy;
2490 return false;
2491}
2492
2493/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2494/// StructType
2495/// ::= '{' '}'
2496/// ::= '{' Type (',' Type)* '}'
2497/// ::= '<' '{' '}' '>'
2498/// ::= '<' '{' Type (',' Type)* '}' '>'
2499bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2500 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~svn325118/lib/AsmParser/LLParser.cpp"
, 2500, __extension__ __PRETTY_FUNCTION__))
;
2501 Lex.Lex(); // Consume the '{'
2502
2503 // Handle the empty struct.
2504 if (EatIfPresent(lltok::rbrace))
2505 return false;
2506
2507 LocTy EltTyLoc = Lex.getLoc();
2508 Type *Ty = nullptr;
2509 if (ParseType(Ty)) return true;
2510 Body.push_back(Ty);
2511
2512 if (!StructType::isValidElementType(Ty))
2513 return Error(EltTyLoc, "invalid element type for struct");
2514
2515 while (EatIfPresent(lltok::comma)) {
2516 EltTyLoc = Lex.getLoc();
2517 if (ParseType(Ty)) return true;
2518
2519 if (!StructType::isValidElementType(Ty))
2520 return Error(EltTyLoc, "invalid element type for struct");
2521
2522 Body.push_back(Ty);
2523 }
2524
2525 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2526}
2527
2528/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2529/// token has already been consumed.
2530/// Type
2531/// ::= '[' APSINTVAL 'x' Types ']'
2532/// ::= '<' APSINTVAL 'x' Types '>'
2533bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2534 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2535 Lex.getAPSIntVal().getBitWidth() > 64)
2536 return TokError("expected number in address space");
2537
2538 LocTy SizeLoc = Lex.getLoc();
2539 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2540 Lex.Lex();
2541
2542 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2543 return true;
2544
2545 LocTy TypeLoc = Lex.getLoc();
2546 Type *EltTy = nullptr;
2547 if (ParseType(EltTy)) return true;
2548
2549 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2550 "expected end of sequential type"))
2551 return true;
2552
2553 if (isVector) {
2554 if (Size == 0)
2555 return Error(SizeLoc, "zero element vector is illegal");
2556 if ((unsigned)Size != Size)
2557 return Error(SizeLoc, "size too large for vector");
2558 if (!VectorType::isValidElementType(EltTy))
2559 return Error(TypeLoc, "invalid vector element type");
2560 Result = VectorType::get(EltTy, unsigned(Size));
2561 } else {
2562 if (!ArrayType::isValidElementType(EltTy))
2563 return Error(TypeLoc, "invalid array element type");
2564 Result = ArrayType::get(EltTy, Size);
2565 }
2566 return false;
2567}
2568
2569//===----------------------------------------------------------------------===//
2570// Function Semantic Analysis.
2571//===----------------------------------------------------------------------===//
2572
2573LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2574 int functionNumber)
2575 : P(p), F(f), FunctionNumber(functionNumber) {
2576
2577 // Insert unnamed arguments into the NumberedVals list.
2578 for (Argument &A : F.args())
2579 if (!A.hasName())
2580 NumberedVals.push_back(&A);
2581}
2582
2583LLParser::PerFunctionState::~PerFunctionState() {
2584 // If there were any forward referenced non-basicblock values, delete them.
2585
2586 for (const auto &P : ForwardRefVals) {
2587 if (isa<BasicBlock>(P.second.first))
2588 continue;
2589 P.second.first->replaceAllUsesWith(
2590 UndefValue::get(P.second.first->getType()));
2591 P.second.first->deleteValue();
2592 }
2593
2594 for (const auto &P : ForwardRefValIDs) {
2595 if (isa<BasicBlock>(P.second.first))
2596 continue;
2597 P.second.first->replaceAllUsesWith(
2598 UndefValue::get(P.second.first->getType()));
2599 P.second.first->deleteValue();
2600 }
2601}
2602
2603bool LLParser::PerFunctionState::FinishFunction() {
2604 if (!ForwardRefVals.empty())
2605 return P.Error(ForwardRefVals.begin()->second.second,
2606 "use of undefined value '%" + ForwardRefVals.begin()->first +
2607 "'");
2608 if (!ForwardRefValIDs.empty())
2609 return P.Error(ForwardRefValIDs.begin()->second.second,
2610 "use of undefined value '%" +
2611 Twine(ForwardRefValIDs.begin()->first) + "'");
2612 return false;
2613}
2614
2615/// GetVal - Get a value with the specified name or ID, creating a
2616/// forward reference record if needed. This can return null if the value
2617/// exists but does not have the right type.
2618Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2619 LocTy Loc) {
2620 // Look this name up in the normal function symbol table.
2621 Value *Val = F.getValueSymbolTable()->lookup(Name);
2622
2623 // If this is a forward reference for the value, see if we already created a
2624 // forward ref record.
2625 if (!Val) {
2626 auto I = ForwardRefVals.find(Name);
2627 if (I != ForwardRefVals.end())
2628 Val = I->second.first;
2629 }
2630
2631 // If we have the value in the symbol table or fwd-ref table, return it.
2632 if (Val) {
2633 if (Val->getType() == Ty) return Val;
2634 if (Ty->isLabelTy())
2635 P.Error(Loc, "'%" + Name + "' is not a basic block");
2636 else
2637 P.Error(Loc, "'%" + Name + "' defined with type '" +
2638 getTypeString(Val->getType()) + "'");
2639 return nullptr;
2640 }
2641
2642 // Don't make placeholders with invalid type.
2643 if (!Ty->isFirstClassType()) {
2644 P.Error(Loc, "invalid use of a non-first-class type");
2645 return nullptr;
2646 }
2647
2648 // Otherwise, create a new forward reference for this value and remember it.
2649 Value *FwdVal;
2650 if (Ty->isLabelTy()) {
2651 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2652 } else {
2653 FwdVal = new Argument(Ty, Name);
2654 }
2655
2656 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2657 return FwdVal;
2658}
2659
2660Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2661 // Look this name up in the normal function symbol table.
2662 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2663
2664 // If this is a forward reference for the value, see if we already created a
2665 // forward ref record.
2666 if (!Val) {
2667 auto I = ForwardRefValIDs.find(ID);
2668 if (I != ForwardRefValIDs.end())
2669 Val = I->second.first;
2670 }
2671
2672 // If we have the value in the symbol table or fwd-ref table, return it.
2673 if (Val) {
2674 if (Val->getType() == Ty) return Val;
2675 if (Ty->isLabelTy())
2676 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2677 else
2678 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2679 getTypeString(Val->getType()) + "'");
2680 return nullptr;
2681 }
2682
2683 if (!Ty->isFirstClassType()) {
2684 P.Error(Loc, "invalid use of a non-first-class type");
2685 return nullptr;
2686 }
2687
2688 // Otherwise, create a new forward reference for this value and remember it.
2689 Value *FwdVal;
2690 if (Ty->isLabelTy()) {
2691 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2692 } else {
2693 FwdVal = new Argument(Ty);
2694 }
2695
2696 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2697 return FwdVal;
2698}
2699
2700/// SetInstName - After an instruction is parsed and inserted into its
2701/// basic block, this installs its name.
2702bool LLParser::PerFunctionState::SetInstName(int NameID,
2703 const std::string &NameStr,
2704 LocTy NameLoc, Instruction *Inst) {
2705 // If this instruction has void type, it cannot have a name or ID specified.
2706 if (Inst->getType()->isVoidTy()) {
2707 if (NameID != -1 || !NameStr.empty())
2708 return P.Error(NameLoc, "instructions returning void cannot have a name");
2709 return false;
2710 }
2711
2712 // If this was a numbered instruction, verify that the instruction is the
2713 // expected value and resolve any forward references.
2714 if (NameStr.empty()) {
2715 // If neither a name nor an ID was specified, just use the next ID.
2716 if (NameID == -1)
2717 NameID = NumberedVals.size();
2718
2719 if (unsigned(NameID) != NumberedVals.size())
2720 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2721 Twine(NumberedVals.size()) + "'");
2722
2723 auto FI = ForwardRefValIDs.find(NameID);
2724 if (FI != ForwardRefValIDs.end()) {
2725 Value *Sentinel = FI->second.first;
2726 if (Sentinel->getType() != Inst->getType())
2727 return P.Error(NameLoc, "instruction forward referenced with type '" +
2728 getTypeString(FI->second.first->getType()) + "'");
2729
2730 Sentinel->replaceAllUsesWith(Inst);
2731 Sentinel->deleteValue();
2732 ForwardRefValIDs.erase(FI);
2733 }
2734
2735 NumberedVals.push_back(Inst);
2736 return false;
2737 }
2738
2739 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2740 auto FI = ForwardRefVals.find(NameStr);
2741 if (FI != ForwardRefVals.end()) {
2742 Value *Sentinel = FI->second.first;
2743 if (Sentinel->getType() != Inst->getType())
2744 return P.Error(NameLoc, "instruction forward referenced with type '" +
2745 getTypeString(FI->second.first->getType()) + "'");
2746
2747 Sentinel->replaceAllUsesWith(Inst);
2748 Sentinel->deleteValue();
2749 ForwardRefVals.erase(FI);
2750 }
2751
2752 // Set the name on the instruction.
2753 Inst->setName(NameStr);
2754
2755 if (Inst->getName() != NameStr)
2756 return P.Error(NameLoc, "multiple definition of local value named '" +
2757 NameStr + "'");
2758 return false;
2759}
2760
2761/// GetBB - Get a basic block with the specified name or ID, creating a
2762/// forward reference record if needed.
2763BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2764 LocTy Loc) {
2765 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2766 Type::getLabelTy(F.getContext()), Loc));
2767}
2768
2769BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2770 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2771 Type::getLabelTy(F.getContext()), Loc));
2772}
2773
2774/// DefineBB - Define the specified basic block, which is either named or
2775/// unnamed. If there is an error, this returns null otherwise it returns
2776/// the block being defined.
2777BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2778 LocTy Loc) {
2779 BasicBlock *BB;
2780 if (Name.empty())
2781 BB = GetBB(NumberedVals.size(), Loc);
2782 else
2783 BB = GetBB(Name, Loc);
2784 if (!BB) return nullptr; // Already diagnosed error.
2785
2786 // Move the block to the end of the function. Forward ref'd blocks are
2787 // inserted wherever they happen to be referenced.
2788 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2789
2790 // Remove the block from forward ref sets.
2791 if (Name.empty()) {
2792 ForwardRefValIDs.erase(NumberedVals.size());
2793 NumberedVals.push_back(BB);
2794 } else {
2795 // BB forward references are already in the function symbol table.
2796 ForwardRefVals.erase(Name);
2797 }
2798
2799 return BB;
2800}
2801
2802//===----------------------------------------------------------------------===//
2803// Constants.
2804//===----------------------------------------------------------------------===//
2805
2806/// ParseValID - Parse an abstract value that doesn't necessarily have a
2807/// type implied. For example, if we parse "4" we don't know what integer type
2808/// it has. The value will later be combined with its type and checked for
2809/// sanity. PFS is used to convert function-local operands of metadata (since
2810/// metadata operands are not just parsed here but also converted to values).
2811/// PFS can be null when we are not parsing metadata values inside a function.
2812bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2813 ID.Loc = Lex.getLoc();
2814 switch (Lex.getKind()) {
2815 default: return TokError("expected value token");
2816 case lltok::GlobalID: // @42
2817 ID.UIntVal = Lex.getUIntVal();
2818 ID.Kind = ValID::t_GlobalID;
2819 break;
2820 case lltok::GlobalVar: // @foo
2821 ID.StrVal = Lex.getStrVal();
2822 ID.Kind = ValID::t_GlobalName;
2823 break;
2824 case lltok::LocalVarID: // %42
2825 ID.UIntVal = Lex.getUIntVal();
2826 ID.Kind = ValID::t_LocalID;
2827 break;
2828 case lltok::LocalVar: // %foo
2829 ID.StrVal = Lex.getStrVal();
2830 ID.Kind = ValID::t_LocalName;
2831 break;
2832 case lltok::APSInt:
2833 ID.APSIntVal = Lex.getAPSIntVal();
2834 ID.Kind = ValID::t_APSInt;
2835 break;
2836 case lltok::APFloat:
2837 ID.APFloatVal = Lex.getAPFloatVal();
2838 ID.Kind = ValID::t_APFloat;
2839 break;
2840 case lltok::kw_true:
2841 ID.ConstantVal = ConstantInt::getTrue(Context);
2842 ID.Kind = ValID::t_Constant;
2843 break;
2844 case lltok::kw_false:
2845 ID.ConstantVal = ConstantInt::getFalse(Context);
2846 ID.Kind = ValID::t_Constant;
2847 break;
2848 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2849 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2850 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2851 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2852
2853 case lltok::lbrace: {
2854 // ValID ::= '{' ConstVector '}'
2855 Lex.Lex();
2856 SmallVector<Constant*, 16> Elts;
2857 if (ParseGlobalValueVector(Elts) ||
2858 ParseToken(lltok::rbrace, "expected end of struct constant"))
2859 return true;
2860
2861 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2862 ID.UIntVal = Elts.size();
2863 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2864 Elts.size() * sizeof(Elts[0]));
2865 ID.Kind = ValID::t_ConstantStruct;
2866 return false;
2867 }
2868 case lltok::less: {
2869 // ValID ::= '<' ConstVector '>' --> Vector.
2870 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2871 Lex.Lex();
2872 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2873
2874 SmallVector<Constant*, 16> Elts;
2875 LocTy FirstEltLoc = Lex.getLoc();
2876 if (ParseGlobalValueVector(Elts) ||
2877 (isPackedStruct &&
2878 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2879 ParseToken(lltok::greater, "expected end of constant"))
2880 return true;
2881
2882 if (isPackedStruct) {
2883 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2884 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2885 Elts.size() * sizeof(Elts[0]));
2886 ID.UIntVal = Elts.size();
2887 ID.Kind = ValID::t_PackedConstantStruct;
2888 return false;
2889 }
2890
2891 if (Elts.empty())
2892 return Error(ID.Loc, "constant vector must not be empty");
2893
2894 if (!Elts[0]->getType()->isIntegerTy() &&
2895 !Elts[0]->getType()->isFloatingPointTy() &&
2896 !Elts[0]->getType()->isPointerTy())
2897 return Error(FirstEltLoc,
2898 "vector elements must have integer, pointer or floating point type");
2899
2900 // Verify that all the vector elements have the same type.
2901 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2902 if (Elts[i]->getType() != Elts[0]->getType())
2903 return Error(FirstEltLoc,
2904 "vector element #" + Twine(i) +
2905 " is not of type '" + getTypeString(Elts[0]->getType()));
2906
2907 ID.ConstantVal = ConstantVector::get(Elts);
2908 ID.Kind = ValID::t_Constant;
2909 return false;
2910 }
2911 case lltok::lsquare: { // Array Constant
2912 Lex.Lex();
2913 SmallVector<Constant*, 16> Elts;
2914 LocTy FirstEltLoc = Lex.getLoc();
2915 if (ParseGlobalValueVector(Elts) ||
2916 ParseToken(lltok::rsquare, "expected end of array constant"))
2917 return true;
2918
2919 // Handle empty element.
2920 if (Elts.empty()) {
2921 // Use undef instead of an array because it's inconvenient to determine
2922 // the element type at this point, there being no elements to examine.
2923 ID.Kind = ValID::t_EmptyArray;
2924 return false;
2925 }
2926
2927 if (!Elts[0]->getType()->isFirstClassType())
2928 return Error(FirstEltLoc, "invalid array element type: " +
2929 getTypeString(Elts[0]->getType()));
2930
2931 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2932
2933 // Verify all elements are correct type!
2934 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2935 if (Elts[i]->getType() != Elts[0]->getType())
2936 return Error(FirstEltLoc,
2937 "array element #" + Twine(i) +
2938 " is not of type '" + getTypeString(Elts[0]->getType()));
2939 }
2940
2941 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2942 ID.Kind = ValID::t_Constant;
2943 return false;
2944 }
2945 case lltok::kw_c: // c "foo"
2946 Lex.Lex();
2947 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2948 false);
2949 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2950 ID.Kind = ValID::t_Constant;
2951 return false;
2952
2953 case lltok::kw_asm: {
2954 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2955 // STRINGCONSTANT
2956 bool HasSideEffect, AlignStack, AsmDialect;
2957 Lex.Lex();
2958 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2959 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2960 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2961 ParseStringConstant(ID.StrVal) ||
2962 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2963 ParseToken(lltok::StringConstant, "expected constraint string"))
2964 return true;
2965 ID.StrVal2 = Lex.getStrVal();
2966 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2967 (unsigned(AsmDialect)<<2);
2968 ID.Kind = ValID::t_InlineAsm;
2969 return false;
2970 }
2971
2972 case lltok::kw_blockaddress: {
2973 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2974 Lex.Lex();
2975
2976 ValID Fn, Label;
2977
2978 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2979 ParseValID(Fn) ||
2980 ParseToken(lltok::comma, "expected comma in block address expression")||
2981 ParseValID(Label) ||
2982 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2983 return true;
2984
2985 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2986 return Error(Fn.Loc, "expected function name in blockaddress");
2987 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2988 return Error(Label.Loc, "expected basic block name in blockaddress");
2989
2990 // Try to find the function (but skip it if it's forward-referenced).
2991 GlobalValue *GV = nullptr;
2992 if (Fn.Kind == ValID::t_GlobalID) {
2993 if (Fn.UIntVal < NumberedVals.size())
2994 GV = NumberedVals[Fn.UIntVal];
2995 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2996 GV = M->getNamedValue(Fn.StrVal);
2997 }
2998 Function *F = nullptr;
2999 if (GV) {
3000 // Confirm that it's actually a function with a definition.
3001 if (!isa<Function>(GV))
3002 return Error(Fn.Loc, "expected function name in blockaddress");
3003 F = cast<Function>(GV);
3004 if (F->isDeclaration())
3005 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
3006 }
3007
3008 if (!F) {
3009 // Make a global variable as a placeholder for this reference.
3010 GlobalValue *&FwdRef =
3011 ForwardRefBlockAddresses.insert(std::make_pair(
3012 std::move(Fn),
3013 std::map<ValID, GlobalValue *>()))
3014 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3015 .first->second;
3016 if (!FwdRef)
3017 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3018 GlobalValue::InternalLinkage, nullptr, "");
3019 ID.ConstantVal = FwdRef;
3020 ID.Kind = ValID::t_Constant;
3021 return false;
3022 }
3023
3024 // We found the function; now find the basic block. Don't use PFS, since we
3025 // might be inside a constant expression.
3026 BasicBlock *BB;
3027 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3028 if (Label.Kind == ValID::t_LocalID)
3029 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3030 else
3031 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3032 if (!BB)
3033 return Error(Label.Loc, "referenced value is not a basic block");
3034 } else {
3035 if (Label.Kind == ValID::t_LocalID)
3036 return Error(Label.Loc, "cannot take address of numeric label after "
3037 "the function is defined");
3038 BB = dyn_cast_or_null<BasicBlock>(
3039 F->getValueSymbolTable()->lookup(Label.StrVal));
3040 if (!BB)
3041 return Error(Label.Loc, "referenced value is not a basic block");
3042 }
3043
3044 ID.ConstantVal = BlockAddress::get(F, BB);
3045 ID.Kind = ValID::t_Constant;
3046 return false;
3047 }
3048
3049 case lltok::kw_trunc:
3050 case lltok::kw_zext:
3051 case lltok::kw_sext:
3052 case lltok::kw_fptrunc:
3053 case lltok::kw_fpext:
3054 case lltok::kw_bitcast:
3055 case lltok::kw_addrspacecast:
3056 case lltok::kw_uitofp:
3057 case lltok::kw_sitofp:
3058 case lltok::kw_fptoui:
3059 case lltok::kw_fptosi:
3060 case lltok::kw_inttoptr:
3061 case lltok::kw_ptrtoint: {
3062 unsigned Opc = Lex.getUIntVal();
3063 Type *DestTy = nullptr;
3064 Constant *SrcVal;
3065 Lex.Lex();
3066 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3067 ParseGlobalTypeAndValue(SrcVal) ||
3068 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3069 ParseType(DestTy) ||
3070 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3071 return true;
3072 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3073 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3074 getTypeString(SrcVal->getType()) + "' to '" +
3075 getTypeString(DestTy) + "'");
3076 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3077 SrcVal, DestTy);
3078 ID.Kind = ValID::t_Constant;
3079 return false;
3080 }
3081 case lltok::kw_extractvalue: {
3082 Lex.Lex();
3083 Constant *Val;
3084 SmallVector<unsigned, 4> Indices;
3085 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3086 ParseGlobalTypeAndValue(Val) ||
3087 ParseIndexList(Indices) ||
3088 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3089 return true;
3090
3091 if (!Val->getType()->isAggregateType())
3092 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3093 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3094 return Error(ID.Loc, "invalid indices for extractvalue");
3095 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3096 ID.Kind = ValID::t_Constant;
3097 return false;
3098 }
3099 case lltok::kw_insertvalue: {
3100 Lex.Lex();
3101 Constant *Val0, *Val1;
3102 SmallVector<unsigned, 4> Indices;
3103 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3104 ParseGlobalTypeAndValue(Val0) ||
3105 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3106 ParseGlobalTypeAndValue(Val1) ||
3107 ParseIndexList(Indices) ||
3108 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3109 return true;
3110 if (!Val0->getType()->isAggregateType())
3111 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3112 Type *IndexedType =
3113 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3114 if (!IndexedType)
3115 return Error(ID.Loc, "invalid indices for insertvalue");
3116 if (IndexedType != Val1->getType())
3117 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3118 getTypeString(Val1->getType()) +
3119 "' instead of '" + getTypeString(IndexedType) +
3120 "'");
3121 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3122 ID.Kind = ValID::t_Constant;
3123 return false;
3124 }
3125 case lltok::kw_icmp:
3126 case lltok::kw_fcmp: {
3127 unsigned PredVal, Opc = Lex.getUIntVal();
3128 Constant *Val0, *Val1;
3129 Lex.Lex();
3130 if (ParseCmpPredicate(PredVal, Opc) ||
3131 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3132 ParseGlobalTypeAndValue(Val0) ||
3133 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3134 ParseGlobalTypeAndValue(Val1) ||
3135 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3136 return true;
3137
3138 if (Val0->getType() != Val1->getType())
3139 return Error(ID.Loc, "compare operands must have the same type");
3140
3141 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3142
3143 if (Opc == Instruction::FCmp) {
3144 if (!Val0->getType()->isFPOrFPVectorTy())
3145 return Error(ID.Loc, "fcmp requires floating point operands");
3146 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3147 } else {
3148 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3148, __extension__ __PRETTY_FUNCTION__))
;
3149 if (!Val0->getType()->isIntOrIntVectorTy() &&
3150 !Val0->getType()->isPtrOrPtrVectorTy())
3151 return Error(ID.Loc, "icmp requires pointer or integer operands");
3152 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3153 }
3154 ID.Kind = ValID::t_Constant;
3155 return false;
3156 }
3157
3158 // Binary Operators.
3159 case lltok::kw_add:
3160 case lltok::kw_fadd:
3161 case lltok::kw_sub:
3162 case lltok::kw_fsub:
3163 case lltok::kw_mul:
3164 case lltok::kw_fmul:
3165 case lltok::kw_udiv:
3166 case lltok::kw_sdiv:
3167 case lltok::kw_fdiv:
3168 case lltok::kw_urem:
3169 case lltok::kw_srem:
3170 case lltok::kw_frem:
3171 case lltok::kw_shl:
3172 case lltok::kw_lshr:
3173 case lltok::kw_ashr: {
3174 bool NUW = false;
3175 bool NSW = false;
3176 bool Exact = false;
3177 unsigned Opc = Lex.getUIntVal();
3178 Constant *Val0, *Val1;
3179 Lex.Lex();
3180 LocTy ModifierLoc = Lex.getLoc();
3181 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3182 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3183 if (EatIfPresent(lltok::kw_nuw))
3184 NUW = true;
3185 if (EatIfPresent(lltok::kw_nsw)) {
3186 NSW = true;
3187 if (EatIfPresent(lltok::kw_nuw))
3188 NUW = true;
3189 }
3190 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3191 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3192 if (EatIfPresent(lltok::kw_exact))
3193 Exact = true;
3194 }
3195 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3196 ParseGlobalTypeAndValue(Val0) ||
3197 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3198 ParseGlobalTypeAndValue(Val1) ||
3199 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3200 return true;
3201 if (Val0->getType() != Val1->getType())
3202 return Error(ID.Loc, "operands of constexpr must have same type");
3203 if (!Val0->getType()->isIntOrIntVectorTy()) {
3204 if (NUW)
3205 return Error(ModifierLoc, "nuw only applies to integer operations");
3206 if (NSW)
3207 return Error(ModifierLoc, "nsw only applies to integer operations");
3208 }
3209 // Check that the type is valid for the operator.
3210 switch (Opc) {
3211 case Instruction::Add:
3212 case Instruction::Sub:
3213 case Instruction::Mul:
3214 case Instruction::UDiv:
3215 case Instruction::SDiv:
3216 case Instruction::URem:
3217 case Instruction::SRem:
3218 case Instruction::Shl:
3219 case Instruction::AShr:
3220 case Instruction::LShr:
3221 if (!Val0->getType()->isIntOrIntVectorTy())
3222 return Error(ID.Loc, "constexpr requires integer operands");
3223 break;
3224 case Instruction::FAdd:
3225 case Instruction::FSub:
3226 case Instruction::FMul:
3227 case Instruction::FDiv:
3228 case Instruction::FRem:
3229 if (!Val0->getType()->isFPOrFPVectorTy())
3230 return Error(ID.Loc, "constexpr requires fp operands");
3231 break;
3232 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 3232)
;
3233 }
3234 unsigned Flags = 0;
3235 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3236 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3237 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3238 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3239 ID.ConstantVal = C;
3240 ID.Kind = ValID::t_Constant;
3241 return false;
3242 }
3243
3244 // Logical Operations
3245 case lltok::kw_and:
3246 case lltok::kw_or:
3247 case lltok::kw_xor: {
3248 unsigned Opc = Lex.getUIntVal();
3249 Constant *Val0, *Val1;
3250 Lex.Lex();
3251 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3252 ParseGlobalTypeAndValue(Val0) ||
3253 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3254 ParseGlobalTypeAndValue(Val1) ||
3255 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3256 return true;
3257 if (Val0->getType() != Val1->getType())
3258 return Error(ID.Loc, "operands of constexpr must have same type");
3259 if (!Val0->getType()->isIntOrIntVectorTy())
3260 return Error(ID.Loc,
3261 "constexpr requires integer or integer vector operands");
3262 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3263 ID.Kind = ValID::t_Constant;
3264 return false;
3265 }
3266
3267 case lltok::kw_getelementptr:
3268 case lltok::kw_shufflevector:
3269 case lltok::kw_insertelement:
3270 case lltok::kw_extractelement:
3271 case lltok::kw_select: {
3272 unsigned Opc = Lex.getUIntVal();
3273 SmallVector<Constant*, 16> Elts;
3274 bool InBounds = false;
3275 Type *Ty;
3276 Lex.Lex();
3277
3278 if (Opc == Instruction::GetElementPtr)
3279 InBounds = EatIfPresent(lltok::kw_inbounds);
3280
3281 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3282 return true;
3283
3284 LocTy ExplicitTypeLoc = Lex.getLoc();
3285 if (Opc == Instruction::GetElementPtr) {
3286 if (ParseType(Ty) ||
3287 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3288 return true;
3289 }
3290
3291 Optional<unsigned> InRangeOp;
3292 if (ParseGlobalValueVector(
3293 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3294 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3295 return true;
3296
3297 if (Opc == Instruction::GetElementPtr) {
3298 if (Elts.size() == 0 ||
3299 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3300 return Error(ID.Loc, "base of getelementptr must be a pointer");
3301
3302 Type *BaseType = Elts[0]->getType();
3303 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3304 if (Ty != BasePointerType->getElementType())
3305 return Error(
3306 ExplicitTypeLoc,
3307 "explicit pointee type doesn't match operand's pointee type");
3308
3309 unsigned GEPWidth =
3310 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3311
3312 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3313 for (Constant *Val : Indices) {
3314 Type *ValTy = Val->getType();
3315 if (!ValTy->isIntOrIntVectorTy())
3316 return Error(ID.Loc, "getelementptr index must be an integer");
3317 if (ValTy->isVectorTy()) {
3318 unsigned ValNumEl = ValTy->getVectorNumElements();
3319 if (GEPWidth && (ValNumEl != GEPWidth))
3320 return Error(
3321 ID.Loc,
3322 "getelementptr vector index has a wrong number of elements");
3323 // GEPWidth may have been unknown because the base is a scalar,
3324 // but it is known now.
3325 GEPWidth = ValNumEl;
3326 }
3327 }
3328
3329 SmallPtrSet<Type*, 4> Visited;
3330 if (!Indices.empty() && !Ty->isSized(&Visited))
3331 return Error(ID.Loc, "base element of getelementptr must be sized");
3332
3333 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3334 return Error(ID.Loc, "invalid getelementptr indices");
3335
3336 if (InRangeOp) {
3337 if (*InRangeOp == 0)
3338 return Error(ID.Loc,
3339 "inrange keyword may not appear on pointer operand");
3340 --*InRangeOp;
3341 }
3342
3343 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3344 InBounds, InRangeOp);
3345 } else if (Opc == Instruction::Select) {
3346 if (Elts.size() != 3)
3347 return Error(ID.Loc, "expected three operands to select");
3348 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3349 Elts[2]))
3350 return Error(ID.Loc, Reason);
3351 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3352 } else if (Opc == Instruction::ShuffleVector) {
3353 if (Elts.size() != 3)
3354 return Error(ID.Loc, "expected three operands to shufflevector");
3355 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3356 return Error(ID.Loc, "invalid operands to shufflevector");
3357 ID.ConstantVal =
3358 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3359 } else if (Opc == Instruction::ExtractElement) {
3360 if (Elts.size() != 2)
3361 return Error(ID.Loc, "expected two operands to extractelement");
3362 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3363 return Error(ID.Loc, "invalid extractelement operands");
3364 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3365 } else {
3366 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3366, __extension__ __PRETTY_FUNCTION__))
;
3367 if (Elts.size() != 3)
3368 return Error(ID.Loc, "expected three operands to insertelement");
3369 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3370 return Error(ID.Loc, "invalid insertelement operands");
3371 ID.ConstantVal =
3372 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3373 }
3374
3375 ID.Kind = ValID::t_Constant;
3376 return false;
3377 }
3378 }
3379
3380 Lex.Lex();
3381 return false;
3382}
3383
3384/// ParseGlobalValue - Parse a global value with the specified type.
3385bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3386 C = nullptr;
3387 ValID ID;
3388 Value *V = nullptr;
3389 bool Parsed = ParseValID(ID) ||
3390 ConvertValIDToValue(Ty, ID, V, nullptr);
3391 if (V && !(C = dyn_cast<Constant>(V)))
3392 return Error(ID.Loc, "global values must be constants");
3393 return Parsed;
3394}
3395
3396bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3397 Type *Ty = nullptr;
3398 return ParseType(Ty) ||
3399 ParseGlobalValue(Ty, V);
3400}
3401
3402bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3403 C = nullptr;
3404
3405 LocTy KwLoc = Lex.getLoc();
3406 if (!EatIfPresent(lltok::kw_comdat))
3407 return false;
3408
3409 if (EatIfPresent(lltok::lparen)) {
3410 if (Lex.getKind() != lltok::ComdatVar)
3411 return TokError("expected comdat variable");
3412 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3413 Lex.Lex();
3414 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3415 return true;
3416 } else {
3417 if (GlobalName.empty())
3418 return TokError("comdat cannot be unnamed");
3419 C = getComdat(GlobalName, KwLoc);
3420 }
3421
3422 return false;
3423}
3424
3425/// ParseGlobalValueVector
3426/// ::= /*empty*/
3427/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3428bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3429 Optional<unsigned> *InRangeOp) {
3430 // Empty list.
3431 if (Lex.getKind() == lltok::rbrace ||
3432 Lex.getKind() == lltok::rsquare ||
3433 Lex.getKind() == lltok::greater ||
3434 Lex.getKind() == lltok::rparen)
3435 return false;
3436
3437 do {
3438 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3439 *InRangeOp = Elts.size();
3440
3441 Constant *C;
3442 if (ParseGlobalTypeAndValue(C)) return true;
3443 Elts.push_back(C);
3444 } while (EatIfPresent(lltok::comma));
3445
3446 return false;
3447}
3448
3449bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3450 SmallVector<Metadata *, 16> Elts;
3451 if (ParseMDNodeVector(Elts))
3452 return true;
3453
3454 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3455 return false;
3456}
3457
3458/// MDNode:
3459/// ::= !{ ... }
3460/// ::= !7
3461/// ::= !DILocation(...)
3462bool LLParser::ParseMDNode(MDNode *&N) {
3463 if (Lex.getKind() == lltok::MetadataVar)
3464 return ParseSpecializedMDNode(N);
3465
3466 return ParseToken(lltok::exclaim, "expected '!' here") ||
3467 ParseMDNodeTail(N);
3468}
3469
3470bool LLParser::ParseMDNodeTail(MDNode *&N) {
3471 // !{ ... }
3472 if (Lex.getKind() == lltok::lbrace)
3473 return ParseMDTuple(N);
3474
3475 // !42
3476 return ParseMDNodeID(N);
3477}
3478
3479namespace {
3480
3481/// Structure to represent an optional metadata field.
3482template <class FieldTy> struct MDFieldImpl {
3483 typedef MDFieldImpl ImplTy;
3484 FieldTy Val;
3485 bool Seen;
3486
3487 void assign(FieldTy Val) {
3488 Seen = true;
3489 this->Val = std::move(Val);
3490 }
3491
3492 explicit MDFieldImpl(FieldTy Default)
3493 : Val(std::move(Default)), Seen(false) {}
3494};
3495
3496/// Structure to represent an optional metadata field that
3497/// can be of either type (A or B) and encapsulates the
3498/// MD<typeofA>Field and MD<typeofB>Field structs, so not
3499/// to reimplement the specifics for representing each Field.
3500template <class FieldTypeA, class FieldTypeB> struct MDEitherFieldImpl {
3501 typedef MDEitherFieldImpl<FieldTypeA, FieldTypeB> ImplTy;
3502 FieldTypeA A;
3503 FieldTypeB B;
3504 bool Seen;
3505
3506 enum {
3507 IsInvalid = 0,
3508 IsTypeA = 1,
3509 IsTypeB = 2
3510 } WhatIs;
3511
3512 void assign(FieldTypeA A) {
3513 Seen = true;
3514 this->A = std::move(A);
3515 WhatIs = IsTypeA;
3516 }
3517
3518 void assign(FieldTypeB B) {
3519 Seen = true;
3520 this->B = std::move(B);
3521 WhatIs = IsTypeB;
3522 }
3523
3524 explicit MDEitherFieldImpl(FieldTypeA DefaultA, FieldTypeB DefaultB)
3525 : A(std::move(DefaultA)), B(std::move(DefaultB)), Seen(false),
3526 WhatIs(IsInvalid) {}
3527};
3528
3529struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3530 uint64_t Max;
3531
3532 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3533 : ImplTy(Default), Max(Max) {}
3534};
3535
3536struct LineField : public MDUnsignedField {
3537 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3538};
3539
3540struct ColumnField : public MDUnsignedField {
3541 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3542};
3543
3544struct DwarfTagField : public MDUnsignedField {
3545 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3546 DwarfTagField(dwarf::Tag DefaultTag)
3547 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3548};
3549
3550struct DwarfMacinfoTypeField : public MDUnsignedField {
3551 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3552 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3553 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3554};
3555
3556struct DwarfAttEncodingField : public MDUnsignedField {
3557 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3558};
3559
3560struct DwarfVirtualityField : public MDUnsignedField {
3561 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3562};
3563
3564struct DwarfLangField : public MDUnsignedField {
3565 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3566};
3567
3568struct DwarfCCField : public MDUnsignedField {
3569 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3570};
3571
3572struct EmissionKindField : public MDUnsignedField {
3573 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3574};
3575
3576struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3577 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3578};
3579
3580struct MDSignedField : public MDFieldImpl<int64_t> {
3581 int64_t Min;
3582 int64_t Max;
3583
3584 MDSignedField(int64_t Default = 0)
3585 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3586 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3587 : ImplTy(Default), Min(Min), Max(Max) {}
3588};
3589
3590struct MDBoolField : public MDFieldImpl<bool> {
3591 MDBoolField(bool Default = false) : ImplTy(Default) {}
3592};
3593
3594struct MDField : public MDFieldImpl<Metadata *> {
3595 bool AllowNull;
3596
3597 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3598};
3599
3600struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3601 MDConstant() : ImplTy(nullptr) {}
3602};
3603
3604struct MDStringField : public MDFieldImpl<MDString *> {
3605 bool AllowEmpty;
3606 MDStringField(bool AllowEmpty = true)
3607 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3608};
3609
3610struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3611 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3612};
3613
3614struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3615 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3616};
3617
3618struct MDSignedOrMDField : MDEitherFieldImpl<MDSignedField, MDField> {
3619 MDSignedOrMDField(int64_t Default = 0, bool AllowNull = true)
3620 : ImplTy(MDSignedField(Default), MDField(AllowNull)) {}
3621
3622 MDSignedOrMDField(int64_t Default, int64_t Min, int64_t Max,
3623 bool AllowNull = true)
3624 : ImplTy(MDSignedField(Default, Min, Max), MDField(AllowNull)) {}
3625
3626 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3627 bool isMDField() const { return WhatIs == IsTypeB; }
3628 int64_t getMDSignedValue() const {
3629 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3629, __extension__ __PRETTY_FUNCTION__))
;
3630 return A.Val;
3631 }
3632 Metadata *getMDFieldValue() const {
3633 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3633, __extension__ __PRETTY_FUNCTION__))
;
3634 return B.Val;
3635 }
3636};
3637
3638struct MDSignedOrUnsignedField
3639 : MDEitherFieldImpl<MDSignedField, MDUnsignedField> {
3640 MDSignedOrUnsignedField() : ImplTy(MDSignedField(0), MDUnsignedField(0)) {}
3641
3642 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3643 bool isMDUnsignedField() const { return WhatIs == IsTypeB; }
3644 int64_t getMDSignedValue() const {
3645 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3645, __extension__ __PRETTY_FUNCTION__))
;
3646 return A.Val;
3647 }
3648 uint64_t getMDUnsignedValue() const {
3649 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3649, __extension__ __PRETTY_FUNCTION__))
;
3650 return B.Val;
3651 }
3652};
3653
3654} // end anonymous namespace
3655
3656namespace llvm {
3657
3658template <>
3659bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3660 MDUnsignedField &Result) {
3661 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3662 return TokError("expected unsigned integer");
3663
3664 auto &U = Lex.getAPSIntVal();
3665 if (U.ugt(Result.Max))
3666 return TokError("value for '" + Name + "' too large, limit is " +
3667 Twine(Result.Max));
3668 Result.assign(U.getZExtValue());
3669 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3669, __extension__ __PRETTY_FUNCTION__))
;
3670 Lex.Lex();
3671 return false;
3672}
3673
3674template <>
3675bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3676 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3677}
3678template <>
3679bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3680 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3681}
3682
3683template <>
3684bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3685 if (Lex.getKind() == lltok::APSInt)
3686 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3687
3688 if (Lex.getKind() != lltok::DwarfTag)
3689 return TokError("expected DWARF tag");
3690
3691 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3692 if (Tag == dwarf::DW_TAG_invalid)
3693 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3694 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3694, __extension__ __PRETTY_FUNCTION__))
;
3695
3696 Result.assign(Tag);
3697 Lex.Lex();
3698 return false;
3699}
3700
3701template <>
3702bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3703 DwarfMacinfoTypeField &Result) {
3704 if (Lex.getKind() == lltok::APSInt)
3705 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3706
3707 if (Lex.getKind() != lltok::DwarfMacinfo)
3708 return TokError("expected DWARF macinfo type");
3709
3710 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3711 if (Macinfo == dwarf::DW_MACINFO_invalid)
3712 return TokError(
3713 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3714 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3714, __extension__ __PRETTY_FUNCTION__))
;
3715
3716 Result.assign(Macinfo);
3717 Lex.Lex();
3718 return false;
3719}
3720
3721template <>
3722bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3723 DwarfVirtualityField &Result) {
3724 if (Lex.getKind() == lltok::APSInt)
3725 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3726
3727 if (Lex.getKind() != lltok::DwarfVirtuality)
3728 return TokError("expected DWARF virtuality code");
3729
3730 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3731 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3732 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3733 Lex.getStrVal() + "'");
3734 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3734, __extension__ __PRETTY_FUNCTION__))
;
3735 Result.assign(Virtuality);
3736 Lex.Lex();
3737 return false;
3738}
3739
3740template <>
3741bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3742 if (Lex.getKind() == lltok::APSInt)
3743 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3744
3745 if (Lex.getKind() != lltok::DwarfLang)
3746 return TokError("expected DWARF language");
3747
3748 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3749 if (!Lang)
3750 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3751 "'");
3752 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3752, __extension__ __PRETTY_FUNCTION__))
;
3753 Result.assign(Lang);
3754 Lex.Lex();
3755 return false;
3756}
3757
3758template <>
3759bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3760 if (Lex.getKind() == lltok::APSInt)
3761 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3762
3763 if (Lex.getKind() != lltok::DwarfCC)
3764 return TokError("expected DWARF calling convention");
3765
3766 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3767 if (!CC)
3768 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3769 "'");
3770 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3770, __extension__ __PRETTY_FUNCTION__))
;
3771 Result.assign(CC);
3772 Lex.Lex();
3773 return false;
3774}
3775
3776template <>
3777bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3778 if (Lex.getKind() == lltok::APSInt)
3779 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3780
3781 if (Lex.getKind() != lltok::EmissionKind)
3782 return TokError("expected emission kind");
3783
3784 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3785 if (!Kind)
3786 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3787 "'");
3788 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3788, __extension__ __PRETTY_FUNCTION__))
;
3789 Result.assign(*Kind);
3790 Lex.Lex();
3791 return false;
3792}
3793
3794template <>
3795bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3796 DwarfAttEncodingField &Result) {
3797 if (Lex.getKind() == lltok::APSInt)
3798 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3799
3800 if (Lex.getKind() != lltok::DwarfAttEncoding)
3801 return TokError("expected DWARF type attribute encoding");
3802
3803 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3804 if (!Encoding)
3805 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3806 Lex.getStrVal() + "'");
3807 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3807, __extension__ __PRETTY_FUNCTION__))
;
3808 Result.assign(Encoding);
3809 Lex.Lex();
3810 return false;
3811}
3812
3813/// DIFlagField
3814/// ::= uint32
3815/// ::= DIFlagVector
3816/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3817template <>
3818bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3819
3820 // Parser for a single flag.
3821 auto parseFlag = [&](DINode::DIFlags &Val) {
3822 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3823 uint32_t TempVal = static_cast<uint32_t>(Val);
3824 bool Res = ParseUInt32(TempVal);
3825 Val = static_cast<DINode::DIFlags>(TempVal);
3826 return Res;
3827 }
3828
3829 if (Lex.getKind() != lltok::DIFlag)
3830 return TokError("expected debug info flag");
3831
3832 Val = DINode::getFlag(Lex.getStrVal());
3833 if (!Val)
3834 return TokError(Twine("invalid debug info flag flag '") +
3835 Lex.getStrVal() + "'");
3836 Lex.Lex();
3837 return false;
3838 };
3839
3840 // Parse the flags and combine them together.
3841 DINode::DIFlags Combined = DINode::FlagZero;
3842 do {
3843 DINode::DIFlags Val;
3844 if (parseFlag(Val))
3845 return true;
3846 Combined |= Val;
3847 } while (EatIfPresent(lltok::bar));
3848
3849 Result.assign(Combined);
3850 return false;
3851}
3852
3853template <>
3854bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3855 MDSignedField &Result) {
3856 if (Lex.getKind() != lltok::APSInt)
3857 return TokError("expected signed integer");
3858
3859 auto &S = Lex.getAPSIntVal();
3860 if (S < Result.Min)
3861 return TokError("value for '" + Name + "' too small, limit is " +
3862 Twine(Result.Min));
3863 if (S > Result.Max)
3864 return TokError("value for '" + Name + "' too large, limit is " +
3865 Twine(Result.Max));
3866 Result.assign(S.getExtValue());
3867 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3867, __extension__ __PRETTY_FUNCTION__))
;
3868 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~svn325118/lib/AsmParser/LLParser.cpp"
, 3868, __extension__ __PRETTY_FUNCTION__))
;
3869 Lex.Lex();
3870 return false;
3871}
3872
3873template <>
3874bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3875 switch (Lex.getKind()) {
3876 default:
3877 return TokError("expected 'true' or 'false'");
3878 case lltok::kw_true:
3879 Result.assign(true);
3880 break;
3881 case lltok::kw_false:
3882 Result.assign(false);
3883 break;
3884 }
3885 Lex.Lex();
3886 return false;
3887}
3888
3889template <>
3890bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3891 if (Lex.getKind() == lltok::kw_null) {
5
Assuming the condition is false
6
Taking false branch
3892 if (!Result.AllowNull)
3893 return TokError("'" + Name + "' cannot be null");
3894 Lex.Lex();
3895 Result.assign(nullptr);
3896 return false;
3897 }
3898
3899 Metadata *MD;
7
'MD' declared without an initial value
3900 if (ParseMetadata(MD, nullptr))
8
Calling 'LLParser::ParseMetadata'
47
Returning from 'LLParser::ParseMetadata'
48
Assuming the condition is false
49
Taking false branch
3901 return true;
3902
3903 Result.assign(MD);
50
1st function call argument is an uninitialized value
3904 return false;
3905}
3906
3907template <>
3908bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3909 MDSignedOrMDField &Result) {
3910 // Try to parse a signed int.
3911 if (Lex.getKind() == lltok::APSInt) {
3912 MDSignedField Res = Result.A;
3913 if (!ParseMDField(Loc, Name, Res)) {
3914 Result.assign(Res);
3915 return false;
3916 }
3917 return true;
3918 }
3919
3920 // Otherwise, try to parse as an MDField.
3921 MDField Res = Result.B;
3922 if (!ParseMDField(Loc, Name, Res)) {
3923 Result.assign(Res);
3924 return false;
3925 }
3926
3927 return true;
3928}
3929
3930template <>
3931bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3932 MDSignedOrUnsignedField &Result) {
3933 if (Lex.getKind() != lltok::APSInt)
3934 return false;
3935
3936 if (Lex.getAPSIntVal().isSigned()) {
3937 MDSignedField Res = Result.A;
3938 if (ParseMDField(Loc, Name, Res))
3939 return true;
3940 Result.assign(Res);
3941 return false;
3942 }
3943
3944 MDUnsignedField Res = Result.B;
3945 if (ParseMDField(Loc, Name, Res))
3946 return true;
3947 Result.assign(Res);
3948 return false;
3949}
3950
3951template <>
3952bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3953 LocTy ValueLoc = Lex.getLoc();
3954 std::string S;
3955 if (ParseStringConstant(S))
3956 return true;
3957
3958 if (!Result.AllowEmpty && S.empty())
3959 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3960
3961 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3962 return false;
3963}
3964
3965template <>
3966bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3967 SmallVector<Metadata *, 4> MDs;
3968 if (ParseMDNodeVector(MDs))
3969 return true;
3970
3971 Result.assign(std::move(MDs));
3972 return false;
3973}
3974
3975template <>
3976bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3977 ChecksumKindField &Result) {
3978 Optional<DIFile::ChecksumKind> CSKind =
3979 DIFile::getChecksumKind(Lex.getStrVal());
3980
3981 if (Lex.getKind() != lltok::ChecksumKind || !CSKind)
3982 return TokError(
3983 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
3984
3985 Result.assign(*CSKind);
3986 Lex.Lex();
3987 return false;
3988}
3989
3990} // end namespace llvm
3991
3992template <class ParserTy>
3993bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3994 do {
3995 if (Lex.getKind() != lltok::LabelStr)
3996 return TokError("expected field label here");
3997
3998 if (parseField())
3999 return true;
4000 } while (EatIfPresent(lltok::comma));
4001
4002 return false;
4003}
4004
4005template <class ParserTy>
4006bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
4007 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~svn325118/lib/AsmParser/LLParser.cpp"
, 4007, __extension__ __PRETTY_FUNCTION__))
;
4008 Lex.Lex();
4009
4010 if (ParseToken(lltok::lparen, "expected '(' here"))
4011 return true;
4012 if (Lex.getKind() != lltok::rparen)
4013 if (ParseMDFieldsImplBody(parseField))
4014 return true;
4015
4016 ClosingLoc = Lex.getLoc();
4017 return ParseToken(lltok::rparen, "expected ')' here");
4018}
4019
4020template <class FieldTy>
4021bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
4022 if (Result.Seen)
2
Assuming the condition is false
3
Taking false branch
4023 return TokError("field '" + Name + "' cannot be specified more than once");
4024
4025 LocTy Loc = Lex.getLoc();
4026 Lex.Lex();
4027 return ParseMDField(Loc, Name, Result);
4
Calling 'LLParser::ParseMDField'
4028}
4029
4030bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
4031 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~svn325118/lib/AsmParser/LLParser.cpp"
, 4031, __extension__ __PRETTY_FUNCTION__))
;
4032
4033#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
4034 if (Lex.getStrVal() == #CLASS) \
4035 return Parse##CLASS(N, IsDistinct);
4036#include "llvm/IR/Metadata.def"
4037
4038 return TokError("expected metadata type");
4039}
4040
4041#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
4042#define NOP_FIELD(NAME, TYPE, INIT)
4043#define REQUIRE_FIELD(NAME, TYPE, INIT) \
4044 if (!NAME.Seen) \
4045 return Error(ClosingLoc, "missing required field '" #NAME "'");
4046#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
4047 if (Lex.getStrVal() == #NAME) \
4048 return ParseMDField(#NAME, NAME);
4049#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)
\
4050 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
4051 do { \
4052 LocTy ClosingLoc; \
4053 if (ParseMDFieldsImpl([&]() -> bool { \
4054 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
4055 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
4056 }, ClosingLoc)) \
4057 return true; \
4058 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
4059 } while (false)
4060#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
4061 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
4062
4063/// ParseDILocationFields:
4064/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
4065bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
4066#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4067 OPTIONAL(line, LineField, ); \
4068 OPTIONAL(column, ColumnField, ); \
4069 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4070 OPTIONAL(inlinedAt, MDField, );
4071 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)
;
4072#undef VISIT_MD_FIELDS
4073
4074 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))
4075 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))
;
4076 return false;
4077}
4078
4079/// ParseGenericDINode:
4080/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
4081bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
4082#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4083 REQUIRED(tag, DwarfTagField, ); \
4084 OPTIONAL(header, MDStringField, ); \
4085 OPTIONAL(operands, MDFieldList, );
4086 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)
;
4087#undef VISIT_MD_FIELDS
4088
4089 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
4090 (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))
;
4091 return false;
4092}
4093
4094/// ParseDISubrange:
4095/// ::= !DISubrange(count: 30, lowerBound: 2)
4096/// ::= !DISubrange(count: !node, lowerBound: 2)
4097bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
4098#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4099 REQUIRED(count, MDSignedOrMDField, (-1, -1, INT64_MAX(9223372036854775807L), false)); \
4100 OPTIONAL(lowerBound, MDSignedField, );
4101 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)
;
4102#undef VISIT_MD_FIELDS
4103
4104 if (count.isMDSignedField())
4105 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
4106 DISubrange, (Context, count.getMDSignedValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
;
4107 else if (count.isMDField())
4108 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
4109 DISubrange, (Context, count.getMDFieldValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
;
4110 else
4111 return true;
4112
4113 return false;
4114}
4115
4116/// ParseDIEnumerator:
4117/// ::= !DIEnumerator(value: 30, isUnsigned: true, name: "SomeKind")
4118bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
4119#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4120 REQUIRED(name, MDStringField, ); \
4121 REQUIRED(value, MDSignedOrUnsignedField, ); \
4122 OPTIONAL(isUnsigned, MDBoolField, (false));
4123 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)
;
4124#undef VISIT_MD_FIELDS
4125
4126 if (isUnsigned.Val && value.isMDSignedField())
4127 return TokError("unsigned enumerator with negative value");
4128
4129 int64_t Value = value.isMDSignedField()
4130 ? value.getMDSignedValue()
4131 : static_cast<int64_t>(value.getMDUnsignedValue());
4132 Result =
4133 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))
;
4134
4135 return false;
4136}
4137
4138/// ParseDIBasicType:
4139/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
4140bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4141#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4142 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4143 OPTIONAL(name, MDStringField, ); \
4144 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4145 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4146 OPTIONAL(encoding, DwarfAttEncodingField, );
4147 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)
;
4148#undef VISIT_MD_FIELDS
4149
4150 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
))
4151 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
))
;
4152 return false;
4153}
4154
4155/// ParseDIDerivedType:
4156/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4157/// line: 7, scope: !1, baseType: !2, size: 32,
4158/// align: 32, offset: 0, flags: 0, extraData: !3,
4159/// dwarfAddressSpace: 3)
4160bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4161#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4162 REQUIRED(tag, DwarfTagField, ); \
4163 OPTIONAL(name, MDStringField, ); \
4164 OPTIONAL(file, MDField, ); \
4165 OPTIONAL(line, LineField, ); \
4166 OPTIONAL(scope, MDField, ); \
4167 REQUIRED(baseType, MDField, ); \
4168 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4169 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4170 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4171 OPTIONAL(flags, DIFlagField, ); \
4172 OPTIONAL(extraData, MDField, ); \
4173 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
4174 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)
;
4175#undef VISIT_MD_FIELDS
4176
4177 Optional<unsigned> DWARFAddressSpace;
4178 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4179 DWARFAddressSpace = dwarfAddressSpace.Val;
4180
4181 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))
4182 (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))
4183 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))
4184 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))
4185 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))
;
4186 return false;
4187}
4188
4189bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4190#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4191 REQUIRED(tag, DwarfTagField, ); \
4192 OPTIONAL(name, MDStringField, ); \
4193 OPTIONAL(file, MDField, ); \
4194 OPTIONAL(line, LineField, ); \
4195 OPTIONAL(scope, MDField, ); \
4196 OPTIONAL(baseType, MDField, ); \
4197 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4198 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4199 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4200 OPTIONAL(flags, DIFlagField, ); \
4201 OPTIONAL(elements, MDField, ); \
4202 OPTIONAL(runtimeLang, DwarfLangField, ); \
4203 OPTIONAL(vtableHolder, MDField, ); \
4204 OPTIONAL(templateParams, MDField, ); \
4205 OPTIONAL(identifier, MDStringField, ); \
4206 OPTIONAL(discriminator, MDField, );
4207 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)
;
4208#undef VISIT_MD_FIELDS
4209
4210 // If this has an identifier try to build an ODR type.
4211 if (identifier.Val)
4212 if (auto *CT = DICompositeType::buildODRType(
4213 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4214 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4215 elements.Val, runtimeLang.Val, vtableHolder.Val,
4216 templateParams.Val, discriminator.Val)) {
4217 Result = CT;
4218 return false;
4219 }
4220
4221 // Create a new node, and save it in the context if it belongs in the type
4222 // map.
4223 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))
4224 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))
4225 (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))
4226 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))
4227 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))
4228 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))
;
4229 return false;
4230}
4231
4232bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4233#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4234 OPTIONAL(flags, DIFlagField, ); \
4235 OPTIONAL(cc, DwarfCCField, ); \
4236 REQUIRED(types, MDField, );
4237 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)
;
4238#undef VISIT_MD_FIELDS
4239
4240 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4241 (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))
;
4242 return false;
4243}
4244
4245/// ParseDIFileType:
4246/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir"
4247/// checksumkind: CSK_MD5,
4248/// checksum: "000102030405060708090a0b0c0d0e0f")
4249bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4250 // The default constructed value for checksumkind is required, but will never
4251 // be used, as the parser checks if the field was actually Seen before using
4252 // the Val.
4253#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4254 REQUIRED(filename, MDStringField, ); \
4255 REQUIRED(directory, MDStringField, ); \
4256 OPTIONAL(checksumkind, ChecksumKindField, (DIFile::CSK_MD5)); \
4257 OPTIONAL(checksum, MDStringField, );
4258 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4259#undef VISIT_MD_FIELDS
4260
4261 Optional<DIFile::ChecksumInfo<MDString *>> OptChecksum;
4262 if (checksumkind.Seen && checksum.Seen)
4263 OptChecksum.emplace(checksumkind.Val, checksum.Val);
4264 else if (checksumkind.Seen || checksum.Seen)
4265 return Lex.Error("'checksumkind' and 'checksum' must be provided together");
4266
4267 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val,(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum) : DIFile::get (Context, filename.Val, directory
.Val, OptChecksum))
4268 OptChecksum))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum) : DIFile::get (Context, filename.Val, directory
.Val, OptChecksum))
;
4269 return false;
4270}
4271
4272/// ParseDICompileUnit:
4273/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4274/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4275/// splitDebugFilename: "abc.debug",
4276/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4277/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4278bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4279 if (!IsDistinct)
4280 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4281
4282#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4283 REQUIRED(language, DwarfLangField, ); \
4284 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4285 OPTIONAL(producer, MDStringField, ); \
4286 OPTIONAL(isOptimized, MDBoolField, ); \
4287 OPTIONAL(flags, MDStringField, ); \
4288 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4289 OPTIONAL(splitDebugFilename, MDStringField, ); \
4290 OPTIONAL(emissionKind, EmissionKindField, ); \
4291 OPTIONAL(enums, MDField, ); \
4292 OPTIONAL(retainedTypes, MDField, ); \
4293 OPTIONAL(globals, MDField, ); \
4294 OPTIONAL(imports, MDField, ); \
4295 OPTIONAL(macros, MDField, ); \
4296 OPTIONAL(dwoId, MDUnsignedField, ); \
4297 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4298 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4299 OPTIONAL(gnuPubnames, MDBoolField, = false);
4300 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)
;
4301#undef VISIT_MD_FIELDS
4302
4303 Result = DICompileUnit::getDistinct(
4304 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4305 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4306 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4307 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4308 return false;
4309}
4310
4311/// ParseDISubprogram:
4312/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4313/// file: !1, line: 7, type: !2, isLocal: false,
4314/// isDefinition: true, scopeLine: 8, containingType: !3,
4315/// virtuality: DW_VIRTUALTIY_pure_virtual,
4316/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4317/// isOptimized: false, templateParams: !4, declaration: !5,
4318/// variables: !6, thrownTypes: !7)
4319bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4320 auto Loc = Lex.getLoc();
4321#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4322 OPTIONAL(scope, MDField, ); \
4323 OPTIONAL(name, MDStringField, ); \
4324 OPTIONAL(linkageName, MDStringField, ); \
4325 OPTIONAL(file, MDField, ); \
4326 OPTIONAL(line, LineField, ); \
4327 OPTIONAL(type, MDField, ); \
4328 OPTIONAL(isLocal, MDBoolField, ); \
4329 OPTIONAL(isDefinition, MDBoolField, (true)); \
4330 OPTIONAL(scopeLine, LineField, ); \
4331 OPTIONAL(containingType, MDField, ); \
4332 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4333 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4334 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4335 OPTIONAL(flags, DIFlagField, ); \
4336 OPTIONAL(isOptimized, MDBoolField, ); \
4337 OPTIONAL(unit, MDField, ); \
4338 OPTIONAL(templateParams, MDField, ); \
4339 OPTIONAL(declaration, MDField, ); \
4340 OPTIONAL(variables, MDField, ); \
4341 OPTIONAL(thrownTypes, MDField, );
4342 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)
;
4343#undef VISIT_MD_FIELDS
4344
4345 if (isDefinition.Val && !IsDistinct)
4346 return Lex.Error(
4347 Loc,
4348 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4349
4350 Result = GET_OR_DISTINCT((IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4351 DISubprogram,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4352 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4353 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4354 containingType.Val, virtuality.Val, virtualIndex.Val, thisAdjustment.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4355 flags.Val, isOptimized.Val, unit.Val, templateParams.Val,(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
4356 declaration.Val, variables.Val, thrownTypes.Val))(IsDistinct ? DISubprogram::getDistinct (Context, scope.Val, name
.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal.
Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val) : DISubprogram::get (Context, scope.Val
, name.Val, linkageName.Val, file.Val, line.Val, type.Val, isLocal
.Val, isDefinition.Val, scopeLine.Val, containingType.Val, virtuality
.Val, virtualIndex.Val, thisAdjustment.Val, flags.Val, isOptimized
.Val, unit.Val, templateParams.Val, declaration.Val, variables
.Val, thrownTypes.Val))
;
4357 return false;
4358}
4359
4360/// ParseDILexicalBlock:
4361/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4362bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4363#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4364 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4365 OPTIONAL(file, MDField, ); \
4366 OPTIONAL(line, LineField, ); \
4367 OPTIONAL(column, ColumnField, );
4368 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)
;
4369#undef VISIT_MD_FIELDS
4370
4371 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))
4372 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))
;
4373 return false;
4374}
4375
4376/// ParseDILexicalBlockFile:
4377/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4378bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4379#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4380 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4381 OPTIONAL(file, MDField, ); \
4382 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4383 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)
;
4384#undef VISIT_MD_FIELDS
4385
4386 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4387 (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))
;
4388 return false;
4389}
4390
4391/// ParseDINamespace:
4392/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4393bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4394#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4395 REQUIRED(scope, MDField, ); \
4396 OPTIONAL(name, MDStringField, ); \
4397 OPTIONAL(exportSymbols, MDBoolField, );
4398 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)
;
4399#undef VISIT_MD_FIELDS
4400
4401 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4402 (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))
;
4403 return false;
4404}
4405
4406/// ParseDIMacro:
4407/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4408bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4409#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4410 REQUIRED(type, DwarfMacinfoTypeField, ); \
4411 OPTIONAL(line, LineField, ); \
4412 REQUIRED(name, MDStringField, ); \
4413 OPTIONAL(value, MDStringField, );
4414 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4415#undef VISIT_MD_FIELDS
4416
4417 Result = GET_OR_DISTINCT(DIMacro,(IsDistinct ? DIMacro::getDistinct (Context, type.Val, line.Val
, name.Val, value.Val) : DIMacro::get (Context, type.Val, line
.Val, name.Val, value.Val))
4418 (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))
;
4419 return false;
4420}
4421
4422/// ParseDIMacroFile:
4423/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4424bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4425#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4426 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4427 OPTIONAL(line, LineField, ); \
4428 REQUIRED(file, MDField, ); \
4429 OPTIONAL(nodes, MDField, );
4430 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
1
Within the expansion of the macro 'PARSE_MD_FIELDS':
a
Calling 'LLParser::ParseMDField'
4431#undef VISIT_MD_FIELDS
4432
4433 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))
4434 (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))
;
4435 return false;
4436}
4437
4438/// ParseDIModule:
4439/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4440/// includePath: "/usr/include", isysroot: "/")
4441bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4442#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4443 REQUIRED(scope, MDField, ); \
4444 REQUIRED(name, MDStringField, ); \
4445 OPTIONAL(configMacros, MDStringField, ); \
4446 OPTIONAL(includePath, MDStringField, ); \
4447 OPTIONAL(isysroot, MDStringField, );
4448 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)
;
4449#undef VISIT_MD_FIELDS
4450
4451 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))
4452 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))
;
4453 return false;
4454}
4455
4456/// ParseDITemplateTypeParameter:
4457/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4458bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4459#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4460 OPTIONAL(name, MDStringField, ); \
4461 REQUIRED(type, MDField, );
4462 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)
;
4463#undef VISIT_MD_FIELDS
4464
4465 Result =
4466 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4467 return false;
4468}
4469
4470/// ParseDITemplateValueParameter:
4471/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4472/// name: "V", type: !1, value: i32 7)
4473bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4474#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4475 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4476 OPTIONAL(name, MDStringField, ); \
4477 OPTIONAL(type, MDField, ); \
4478 REQUIRED(value, MDField, );
4479 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)
;
4480#undef VISIT_MD_FIELDS
4481
4482 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))
4483 (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))
;
4484 return false;
4485}
4486
4487/// ParseDIGlobalVariable:
4488/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4489/// file: !1, line: 7, type: !2, isLocal: false,
4490/// isDefinition: true, declaration: !3, align: 8)
4491bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4492#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4493 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4494 OPTIONAL(scope, MDField, ); \
4495 OPTIONAL(linkageName, MDStringField, ); \
4496 OPTIONAL(file, MDField, ); \
4497 OPTIONAL(line, LineField, ); \
4498 OPTIONAL(type, MDField, ); \
4499 OPTIONAL(isLocal, MDBoolField, ); \
4500 OPTIONAL(isDefinition, MDBoolField, (true)); \
4501 OPTIONAL(declaration, MDField, ); \
4502 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4503 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)
;
4504#undef VISIT_MD_FIELDS
4505
4506 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))
4507 (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))
4508 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))
4509 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))
;
4510 return false;
4511}
4512
4513/// ParseDILocalVariable:
4514/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4515/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4516/// align: 8)
4517/// ::= !DILocalVariable(scope: !0, name: "foo",
4518/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4519/// align: 8)
4520bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4521#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4522 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4523 OPTIONAL(name, MDStringField, ); \
4524 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4525 OPTIONAL(file, MDField, ); \
4526 OPTIONAL(line, LineField, ); \
4527 OPTIONAL(type, MDField, ); \
4528 OPTIONAL(flags, DIFlagField, ); \
4529 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4530 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)
;
4531#undef VISIT_MD_FIELDS
4532
4533 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))
4534 (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))
4535 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))
;
4536 return false;
4537}
4538
4539/// ParseDIExpression:
4540/// ::= !DIExpression(0, 7, -1)
4541bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4542 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~svn325118/lib/AsmParser/LLParser.cpp"
, 4542, __extension__ __PRETTY_FUNCTION__))
;
4543 Lex.Lex();
4544
4545 if (ParseToken(lltok::lparen, "expected '(' here"))
4546 return true;
4547
4548 SmallVector<uint64_t, 8> Elements;
4549 if (Lex.getKind() != lltok::rparen)
4550 do {
4551 if (Lex.getKind() == lltok::DwarfOp) {
4552 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4553 Lex.Lex();
4554 Elements.push_back(Op);
4555 continue;
4556 }
4557 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4558 }
4559
4560 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4561 return TokError("expected unsigned integer");
4562
4563 auto &U = Lex.getAPSIntVal();
4564 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4565 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4566 Elements.push_back(U.getZExtValue());
4567 Lex.Lex();
4568 } while (EatIfPresent(lltok::comma));
4569
4570 if (ParseToken(lltok::rparen, "expected ')' here"))
4571 return true;
4572
4573 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4574 return false;
4575}
4576
4577/// ParseDIGlobalVariableExpression:
4578/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4579bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4580 bool IsDistinct) {
4581#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4582 REQUIRED(var, MDField, ); \
4583 REQUIRED(expr, MDField, );
4584 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)
;
4585#undef VISIT_MD_FIELDS
4586
4587 Result =
4588 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4589 return false;
4590}
4591
4592/// ParseDIObjCProperty:
4593/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4594/// getter: "getFoo", attributes: 7, type: !2)
4595bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4596#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4597 OPTIONAL(name, MDStringField, ); \
4598 OPTIONAL(file, MDField, ); \
4599 OPTIONAL(line, LineField, ); \
4600 OPTIONAL(setter, MDStringField, ); \
4601 OPTIONAL(getter, MDStringField, ); \
4602 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4603 OPTIONAL(type, MDField, );
4604 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)
;
4605#undef VISIT_MD_FIELDS
4606
4607 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))
4608 (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))
4609 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))
;
4610 return false;
4611}
4612
4613/// ParseDIImportedEntity:
4614/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4615/// line: 7, name: "foo")
4616bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4617#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4618 REQUIRED(tag, DwarfTagField, ); \
4619 REQUIRED(scope, MDField, ); \
4620 OPTIONAL(entity, MDField, ); \
4621 OPTIONAL(file, MDField, ); \
4622 OPTIONAL(line, LineField, ); \
4623 OPTIONAL(name, MDStringField, );
4624 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)
;
4625#undef VISIT_MD_FIELDS
4626
4627 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))
4628 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))
4629 (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))
;
4630 return false;
4631}
4632
4633#undef PARSE_MD_FIELD
4634#undef NOP_FIELD
4635#undef REQUIRE_FIELD
4636#undef DECLARE_FIELD
4637
4638/// ParseMetadataAsValue
4639/// ::= metadata i32 %local
4640/// ::= metadata i32 @global
4641/// ::= metadata i32 7
4642/// ::= metadata !0
4643/// ::= metadata !{...}
4644/// ::= metadata !"string"
4645bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4646 // Note: the type 'metadata' has already been parsed.
4647 Metadata *MD;
4648 if (ParseMetadata(MD, &PFS))
4649 return true;
4650
4651 V = MetadataAsValue::get(Context, MD);
4652 return false;
4653}
4654
4655/// ParseValueAsMetadata
4656/// ::= i32 %local
4657/// ::= i32 @global
4658/// ::= i32 7
4659bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4660 PerFunctionState *PFS) {
4661 Type *Ty;
4662 LocTy Loc;
26
Calling defaulted default constructor for 'SMLoc'
27
Returning from default constructor for 'SMLoc'
4663 if (ParseType(Ty, TypeMsg, Loc))
28
Calling 'LLParser::ParseType'
35
Returning from 'LLParser::ParseType'
36
Assuming the condition is false
37
Taking false branch
4664 return true;
4665 if (Ty->isMetadataTy())
38
Calling 'Type::isMetadataTy'
42
Returning from 'Type::isMetadataTy'
43
Taking true branch
4666 return Error(Loc, "invalid metadata-value-metadata roundtrip");
44
Calling 'LLParser::Error'
45
Returning from 'LLParser::Error'
4667
4668 Value *V;
4669 if (ParseValue(Ty, V, PFS))
4670 return true;
4671
4672 MD = ValueAsMetadata::get(V);
4673 return false;
4674}
4675
4676/// ParseMetadata
4677/// ::= i32 %local
4678/// ::= i32 @global
4679/// ::= i32 7
4680/// ::= !42
4681/// ::= !{...}
4682/// ::= !"string"
4683/// ::= !DILocation(...)
4684bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4685 if (Lex.getKind() == lltok::MetadataVar) {
9
Calling 'LLLexer::getKind'
10
Returning from 'LLLexer::getKind'
11
Assuming the condition is false
12
Taking false branch
4686 MDNode *N;
4687 if (ParseSpecializedMDNode(N))
4688 return true;
4689 MD = N;
4690 return false;
4691 }
4692
4693 // ValueAsMetadata:
4694 // <type> <value>
4695 if (Lex.getKind() != lltok::exclaim)
13
Calling 'LLLexer::getKind'
14
Returning from 'LLLexer::getKind'
15
Assuming the condition is true
16
Taking true branch
4696 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
17
Calling constructor for 'Twine'
24
Returning from constructor for 'Twine'
25
Calling 'LLParser::ParseValueAsMetadata'
46
Returning from 'LLParser::ParseValueAsMetadata'
4697
4698 // '!'.
4699 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~svn325118/lib/AsmParser/LLParser.cpp"
, 4699, __extension__ __PRETTY_FUNCTION__))
;
4700 Lex.Lex();
4701
4702 // MDString:
4703 // ::= '!' STRINGCONSTANT
4704 if (Lex.getKind() == lltok::StringConstant) {
4705 MDString *S;
4706 if (ParseMDString(S))
4707 return true;
4708 MD = S;
4709 return false;
4710 }
4711
4712 // MDNode:
4713 // !{ ... }
4714 // !7
4715 MDNode *N;
4716 if (ParseMDNodeTail(N))
4717 return true;
4718 MD = N;
4719 return false;
4720}
4721
4722//===----------------------------------------------------------------------===//
4723// Function Parsing.
4724//===----------------------------------------------------------------------===//
4725
4726bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4727 PerFunctionState *PFS) {
4728 if (Ty->isFunctionTy())
4729 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4730
4731 switch (ID.Kind) {
4732 case ValID::t_LocalID:
4733 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4734 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4735 return V == nullptr;
4736 case ValID::t_LocalName:
4737 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4738 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4739 return V == nullptr;
4740 case ValID::t_InlineAsm: {
4741 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4742 return Error(ID.Loc, "invalid type for inline asm constraint string");
4743 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4744 (ID.UIntVal >> 1) & 1,
4745 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4746 return false;
4747 }
4748 case ValID::t_GlobalName:
4749 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4750 return V == nullptr;
4751 case ValID::t_GlobalID:
4752 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4753 return V == nullptr;
4754 case ValID::t_APSInt:
4755 if (!Ty->isIntegerTy())
4756 return Error(ID.Loc, "integer constant must have integer type");
4757 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4758 V = ConstantInt::get(Context, ID.APSIntVal);
4759 return false;
4760 case ValID::t_APFloat:
4761 if (!Ty->isFloatingPointTy() ||
4762 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4763 return Error(ID.Loc, "floating point constant invalid for type");
4764
4765 // The lexer has no type info, so builds all half, float, and double FP
4766 // constants as double. Fix this here. Long double does not need this.
4767 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4768 bool Ignored;
4769 if (Ty->isHalfTy())
4770 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4771 &Ignored);
4772 else if (Ty->isFloatTy())
4773 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4774 &Ignored);
4775 }
4776 V = ConstantFP::get(Context, ID.APFloatVal);
4777
4778 if (V->getType() != Ty)
4779 return Error(ID.Loc, "floating point constant does not have type '" +
4780 getTypeString(Ty) + "'");
4781
4782 return false;
4783 case ValID::t_Null:
4784 if (!Ty->isPointerTy())
4785 return Error(ID.Loc, "null must be a pointer type");
4786 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4787 return false;
4788 case ValID::t_Undef:
4789 // FIXME: LabelTy should not be a first-class type.
4790 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4791 return Error(ID.Loc, "invalid type for undef constant");
4792 V = UndefValue::get(Ty);
4793 return false;
4794 case ValID::t_EmptyArray:
4795 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4796 return Error(ID.Loc, "invalid empty array initializer");
4797 V = UndefValue::get(Ty);
4798 return false;
4799 case ValID::t_Zero:
4800 // FIXME: LabelTy should not be a first-class type.
4801 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4802 return Error(ID.Loc, "invalid type for null constant");
4803 V = Constant::getNullValue(Ty);
4804 return false;
4805 case ValID::t_None:
4806 if (!Ty->isTokenTy())
4807 return Error(ID.Loc, "invalid type for none constant");
4808 V = Constant::getNullValue(Ty);
4809 return false;
4810 case ValID::t_Constant:
4811 if (ID.ConstantVal->getType() != Ty)
4812 return Error(ID.Loc, "constant expression type mismatch");
4813
4814 V = ID.ConstantVal;
4815 return false;
4816 case ValID::t_ConstantStruct:
4817 case ValID::t_PackedConstantStruct:
4818 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4819 if (ST->getNumElements() != ID.UIntVal)
4820 return Error(ID.Loc,
4821 "initializer with struct type has wrong # elements");
4822 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4823 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4824
4825 // Verify that the elements are compatible with the structtype.
4826 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4827 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4828 return Error(ID.Loc, "element " + Twine(i) +
4829 " of struct initializer doesn't match struct element type");
4830
4831 V = ConstantStruct::get(
4832 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4833 } else
4834 return Error(ID.Loc, "constant expression type mismatch");
4835 return false;
4836 }
4837 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 4837)
;
4838}
4839
4840bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4841 C = nullptr;
4842 ValID ID;
4843 auto Loc = Lex.getLoc();
4844 if (ParseValID(ID, /*PFS=*/nullptr))
4845 return true;
4846 switch (ID.Kind) {
4847 case ValID::t_APSInt:
4848 case ValID::t_APFloat:
4849 case ValID::t_Undef:
4850 case ValID::t_Constant:
4851 case ValID::t_ConstantStruct:
4852 case ValID::t_PackedConstantStruct: {
4853 Value *V;
4854 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4855 return true;
4856 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~svn325118/lib/AsmParser/LLParser.cpp"
, 4856, __extension__ __PRETTY_FUNCTION__))
;
4857 C = cast<Constant>(V);
4858 return false;
4859 }
4860 case ValID::t_Null:
4861 C = Constant::getNullValue(Ty);
4862 return false;
4863 default:
4864 return Error(Loc, "expected a constant value");
4865 }
4866}
4867
4868bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4869 V = nullptr;
4870 ValID ID;
4871 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4872}
4873
4874bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4875 Type *Ty = nullptr;
4876 return ParseType(Ty) ||
4877 ParseValue(Ty, V, PFS);
4878}
4879
4880bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4881 PerFunctionState &PFS) {
4882 Value *V;
4883 Loc = Lex.getLoc();
4884 if (ParseTypeAndValue(V, PFS)) return true;
4885 if (!isa<BasicBlock>(V))
4886 return Error(Loc, "expected a basic block");
4887 BB = cast<BasicBlock>(V);
4888 return false;
4889}
4890
4891/// FunctionHeader
4892/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
4893/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
4894/// '(' ArgList ')' OptFuncAttrs OptSection OptionalAlign OptGC
4895/// OptionalPrefix OptionalPrologue OptPersonalityFn
4896bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4897 // Parse the linkage.
4898 LocTy LinkageLoc = Lex.getLoc();
4899 unsigned Linkage;
4900 unsigned Visibility;
4901 unsigned DLLStorageClass;
4902 bool DSOLocal;
4903 AttrBuilder RetAttrs;
4904 unsigned CC;
4905 bool HasLinkage;
4906 Type *RetType = nullptr;
4907 LocTy RetTypeLoc = Lex.getLoc();
4908 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
4909 DSOLocal) ||
4910 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4911 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4912 return true;
4913
4914 // Verify that the linkage is ok.
4915 switch ((GlobalValue::LinkageTypes)Linkage) {
4916 case GlobalValue::ExternalLinkage:
4917 break; // always ok.
4918 case GlobalValue::ExternalWeakLinkage:
4919 if (isDefine)
4920 return Error(LinkageLoc, "invalid linkage for function definition");
4921 break;
4922 case GlobalValue::PrivateLinkage:
4923 case GlobalValue::InternalLinkage:
4924 case GlobalValue::AvailableExternallyLinkage:
4925 case GlobalValue::LinkOnceAnyLinkage:
4926 case GlobalValue::LinkOnceODRLinkage:
4927 case GlobalValue::WeakAnyLinkage:
4928 case GlobalValue::WeakODRLinkage:
4929 if (!isDefine)
4930 return Error(LinkageLoc, "invalid linkage for function declaration");
4931 break;
4932 case GlobalValue::AppendingLinkage:
4933 case GlobalValue::CommonLinkage:
4934 return Error(LinkageLoc, "invalid function linkage type");
4935 }
4936
4937 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4938 return Error(LinkageLoc,
4939 "symbol with local linkage must have default visibility");
4940
4941 if (!FunctionType::isValidReturnType(RetType))
4942 return Error(RetTypeLoc, "invalid function return type");
4943
4944 LocTy NameLoc = Lex.getLoc();
4945
4946 std::string FunctionName;
4947 if (Lex.getKind() == lltok::GlobalVar) {
4948 FunctionName = Lex.getStrVal();
4949 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4950 unsigned NameID = Lex.getUIntVal();
4951
4952 if (NameID != NumberedVals.size())
4953 return TokError("function expected to be numbered '%" +
4954 Twine(NumberedVals.size()) + "'");
4955 } else {
4956 return TokError("expected function name");
4957 }
4958
4959 Lex.Lex();
4960
4961 if (Lex.getKind() != lltok::lparen)
4962 return TokError("expected '(' in function argument list");
4963
4964 SmallVector<ArgInfo, 8> ArgList;
4965 bool isVarArg;
4966 AttrBuilder FuncAttrs;
4967 std::vector<unsigned> FwdRefAttrGrps;
4968 LocTy BuiltinLoc;
4969 std::string Section;
4970 unsigned Alignment;
4971 std::string GC;
4972 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4973 Constant *Prefix = nullptr;
4974 Constant *Prologue = nullptr;
4975 Constant *PersonalityFn = nullptr;
4976 Comdat *C;
4977
4978 if (ParseArgumentList(ArgList, isVarArg) ||
4979 ParseOptionalUnnamedAddr(UnnamedAddr) ||
4980 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4981 BuiltinLoc) ||
4982 (EatIfPresent(lltok::kw_section) &&
4983 ParseStringConstant(Section)) ||
4984 parseOptionalComdat(FunctionName, C) ||
4985 ParseOptionalAlignment(Alignment) ||
4986 (EatIfPresent(lltok::kw_gc) &&
4987 ParseStringConstant(GC)) ||
4988 (EatIfPresent(lltok::kw_prefix) &&
4989 ParseGlobalTypeAndValue(Prefix)) ||
4990 (EatIfPresent(lltok::kw_prologue) &&
4991 ParseGlobalTypeAndValue(Prologue)) ||
4992 (EatIfPresent(lltok::kw_personality) &&
4993 ParseGlobalTypeAndValue(PersonalityFn)))
4994 return true;
4995
4996 if (FuncAttrs.contains(Attribute::Builtin))
4997 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4998
4999 // If the alignment was parsed as an attribute, move to the alignment field.
5000 if (FuncAttrs.hasAlignmentAttr()) {
5001 Alignment = FuncAttrs.getAlignment();
5002 FuncAttrs.removeAttribute(Attribute::Alignment);
5003 }
5004
5005 // Okay, if we got here, the function is syntactically valid. Convert types
5006 // and do semantic checks.
5007 std::vector<Type*> ParamTypeList;
5008 SmallVector<AttributeSet, 8> Attrs;
5009
5010 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5011 ParamTypeList.push_back(ArgList[i].Ty);
5012 Attrs.push_back(ArgList[i].Attrs);
5013 }
5014
5015 AttributeList PAL =
5016 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
5017 AttributeSet::get(Context, RetAttrs), Attrs);
5018
5019 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
5020 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
5021
5022 FunctionType *FT =
5023 FunctionType::get(RetType, ParamTypeList, isVarArg);
5024 PointerType *PFT = PointerType::getUnqual(FT);
5025
5026 Fn = nullptr;
5027 if (!FunctionName.empty()) {
5028 // If this was a definition of a forward reference, remove the definition
5029 // from the forward reference table and fill in the forward ref.
5030 auto FRVI = ForwardRefVals.find(FunctionName);
5031 if (FRVI != ForwardRefVals.end()) {
5032 Fn = M->getFunction(FunctionName);
5033 if (!Fn)
5034 return Error(FRVI->second.second, "invalid forward reference to "
5035 "function as global value!");
5036 if (Fn->getType() != PFT)
5037 return Error(FRVI->second.second, "invalid forward reference to "
5038 "function '" + FunctionName + "' with wrong type!");
5039
5040 ForwardRefVals.erase(FRVI);
5041 } else if ((Fn = M->getFunction(FunctionName))) {
5042 // Reject redefinitions.
5043 return Error(NameLoc, "invalid redefinition of function '" +
5044 FunctionName + "'");
5045 } else if (M->getNamedValue(FunctionName)) {
5046 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
5047 }
5048
5049 } else {
5050 // If this is a definition of a forward referenced function, make sure the
5051 // types agree.
5052 auto I = ForwardRefValIDs.find(NumberedVals.size());
5053 if (I != ForwardRefValIDs.end()) {
5054 Fn = cast<Function>(I->second.first);
5055 if (Fn->getType() != PFT)
5056 return Error(NameLoc, "type of definition and forward reference of '@" +
5057 Twine(NumberedVals.size()) + "' disagree");
5058 ForwardRefValIDs.erase(I);
5059 }
5060 }
5061
5062 if (!Fn)
5063 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
5064 else // Move the forward-reference to the correct spot in the module.
5065 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
5066
5067 if (FunctionName.empty())
5068 NumberedVals.push_back(Fn);
5069
5070 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
5071 maybeSetDSOLocal(DSOLocal, *Fn);
5072 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
5073 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
5074 Fn->setCallingConv(CC);
5075 Fn->setAttributes(PAL);
5076 Fn->setUnnamedAddr(UnnamedAddr);
5077 Fn->setAlignment(Alignment);
5078 Fn->setSection(Section);
5079 Fn->setComdat(C);
5080 Fn->setPersonalityFn(PersonalityFn);
5081 if (!GC.empty()) Fn->setGC(GC);
5082 Fn->setPrefixData(Prefix);
5083 Fn->setPrologueData(Prologue);
5084 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
5085
5086 // Add all of the arguments we parsed to the function.
5087 Function::arg_iterator ArgIt = Fn->arg_begin();
5088 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
5089 // If the argument has a name, insert it into the argument symbol table.
5090 if (ArgList[i].Name.empty()) continue;
5091
5092 // Set the name, if it conflicted, it will be auto-renamed.
5093 ArgIt->setName(ArgList[i].Name);
5094
5095 if (ArgIt->getName() != ArgList[i].Name)
5096 return Error(ArgList[i].Loc, "redefinition of argument '%" +
5097 ArgList[i].Name + "'");
5098 }
5099
5100 if (isDefine)
5101 return false;
5102
5103 // Check the declaration has no block address forward references.
5104 ValID ID;
5105 if (FunctionName.empty()) {
5106 ID.Kind = ValID::t_GlobalID;
5107 ID.UIntVal = NumberedVals.size() - 1;
5108 } else {
5109 ID.Kind = ValID::t_GlobalName;
5110 ID.StrVal = FunctionName;
5111 }
5112 auto Blocks = ForwardRefBlockAddresses.find(ID);
5113 if (Blocks != ForwardRefBlockAddresses.end())
5114 return Error(Blocks->first.Loc,
5115 "cannot take blockaddress inside a declaration");
5116 return false;
5117}
5118
5119bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
5120 ValID ID;
5121 if (FunctionNumber == -1) {
5122 ID.Kind = ValID::t_GlobalName;
5123 ID.StrVal = F.getName();
5124 } else {
5125 ID.Kind = ValID::t_GlobalID;
5126 ID.UIntVal = FunctionNumber;
5127 }
5128
5129 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
5130 if (Blocks == P.ForwardRefBlockAddresses.end())
5131 return false;
5132
5133 for (const auto &I : Blocks->second) {
5134 const ValID &BBID = I.first;
5135 GlobalValue *GV = I.second;
5136
5137 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~svn325118/lib/AsmParser/LLParser.cpp"
, 5138, __extension__ __PRETTY_FUNCTION__))
5138 "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~svn325118/lib/AsmParser/LLParser.cpp"
, 5138, __extension__ __PRETTY_FUNCTION__))
;
5139 BasicBlock *BB;
5140 if (BBID.Kind == ValID::t_LocalName)
5141 BB = GetBB(BBID.StrVal, BBID.Loc);
5142 else
5143 BB = GetBB(BBID.UIntVal, BBID.Loc);
5144 if (!BB)
5145 return P.Error(BBID.Loc, "referenced value is not a basic block");
5146
5147 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
5148 GV->eraseFromParent();
5149 }
5150
5151 P.ForwardRefBlockAddresses.erase(Blocks);
5152 return false;
5153}
5154
5155/// ParseFunctionBody
5156/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5157bool LLParser::ParseFunctionBody(Function &Fn) {
5158 if (Lex.getKind() != lltok::lbrace)
5159 return TokError("expected '{' in function body");
5160 Lex.Lex(); // eat the {.
5161
5162 int FunctionNumber = -1;
5163 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5164
5165 PerFunctionState PFS(*this, Fn, FunctionNumber);
5166
5167 // Resolve block addresses and allow basic blocks to be forward-declared
5168 // within this function.
5169 if (PFS.resolveForwardRefBlockAddresses())
5170 return true;
5171 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5172
5173 // We need at least one basic block.
5174 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5175 return TokError("function body requires at least one basic block");
5176
5177 while (Lex.getKind() != lltok::rbrace &&
5178 Lex.getKind() != lltok::kw_uselistorder)
5179 if (ParseBasicBlock(PFS)) return true;
5180
5181 while (Lex.getKind() != lltok::rbrace)
5182 if (ParseUseListOrder(&PFS))
5183 return true;
5184
5185 // Eat the }.
5186 Lex.Lex();
5187
5188 // Verify function is ok.
5189 return PFS.FinishFunction();
5190}
5191
5192/// ParseBasicBlock
5193/// ::= LabelStr? Instruction*
5194bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5195 // If this basic block starts out with a name, remember it.
5196 std::string Name;
5197 LocTy NameLoc = Lex.getLoc();
5198 if (Lex.getKind() == lltok::LabelStr) {
5199 Name = Lex.getStrVal();
5200 Lex.Lex();
5201 }
5202
5203 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5204 if (!BB)
5205 return Error(NameLoc,
5206 "unable to create block named '" + Name + "'");
5207
5208 std::string NameStr;
5209
5210 // Parse the instructions in this block until we get a terminator.
5211 Instruction *Inst;
5212 do {
5213 // This instruction may have three possibilities for a name: a) none
5214 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5215 LocTy NameLoc = Lex.getLoc();
5216 int NameID = -1;
5217 NameStr = "";
5218
5219 if (Lex.getKind() == lltok::LocalVarID) {
5220 NameID = Lex.getUIntVal();
5221 Lex.Lex();
5222 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5223 return true;
5224 } else if (Lex.getKind() == lltok::LocalVar) {
5225 NameStr = Lex.getStrVal();
5226 Lex.Lex();
5227 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5228 return true;
5229 }
5230
5231 switch (ParseInstruction(Inst, BB, PFS)) {
5232 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-7~svn325118/lib/AsmParser/LLParser.cpp"
, 5232)
;
5233 case InstError: return true;
5234 case InstNormal:
5235 BB->getInstList().push_back(Inst);
5236
5237 // With a normal result, we check to see if the instruction is followed by
5238 // a comma and metadata.
5239 if (EatIfPresent(lltok::comma))
5240 if (ParseInstructionMetadata(*Inst))
5241 return true;
5242 break;
5243 case InstExtraComma:
5244 BB->getInstList().push_back(Inst);
5245
5246 // If the instruction parser ate an extra comma at the end of it, it
5247 // *must* be followed by metadata.
5248 if (ParseInstructionMetadata(*Inst))
5249 return true;
5250 break;
5251 }
5252
5253 // Set the name on the instruction.
5254 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5255 } while (!isa<TerminatorInst>(Inst));
5256
5257 return false;
5258}
5259
5260//===----------------------------------------------------------------------===//
5261// Instruction Parsing.
5262//===----------------------------------------------------------------------===//
5263
5264/// ParseInstruction - Parse one of the many different instructions.
5265///
5266int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5267 PerFunctionState &PFS) {
5268 lltok::Kind Token = Lex.getKind();
5269 if (Token == lltok::Eof)
5270 return TokError("found end of file when expecting more instructions");
5271 LocTy Loc = Lex.getLoc();
5272 unsigned KeywordVal = Lex.getUIntVal();
5273 Lex.Lex(); // Eat the keyword.
5274
5275 switch (Token) {
5276 default: return Error(Loc, "expected instruction opcode");
5277 // Terminator Instructions.
5278 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5279 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5280 case lltok::kw_br: return ParseBr(Inst, PFS);
5281 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5282 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5283 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5284 case lltok::kw_resume: return ParseResume(Inst, PFS);
5285 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5286 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5287 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5288 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5289 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5290 // Binary Operators.
5291 case lltok::kw_add:
5292 case lltok::kw_sub:
5293 case lltok::kw_mul:
5294 case lltok::kw_shl: {
5295 bool NUW = EatIfPresent(lltok::kw_nuw);
5296 bool NSW = EatIfPresent(lltok::kw_nsw);
5297 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5298
5299 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5300
5301 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5302 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5303 return false;
5304 }
5305 case lltok::kw_fadd:
5306 case lltok::kw_fsub:
5307 case lltok::kw_fmul:
5308 case lltok::kw_fdiv:
5309 case lltok::kw_frem: {
5310 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5311 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5312 if (Res != 0)
5313 return Res;
5314 if (FMF.any())
5315 Inst->setFastMathFlags(FMF);
5316 return 0;
5317 }
5318
5319 case lltok::kw_sdiv:
5320 case lltok::kw_udiv:
5321 case lltok::kw_lshr:
5322 case lltok::kw_ashr: {
5323 bool Exact = EatIfPresent(lltok::kw_exact);
5324
5325 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5326 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5327 return false;
5328 }
5329
5330 case lltok::kw_urem:
5331 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5332 case lltok::kw_and:
5333 case lltok::kw_or:
5334 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5335 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5336 case lltok::kw_fcmp: {
5337 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5338 int Res = ParseCompare(Inst, PFS, KeywordVal);
5339 if (Res != 0)
5340 return Res;
5341 if (FMF.any())
5342 Inst->setFastMathFlags(FMF);
5343 return 0;
5344 }
5345
5346 // Casts.
5347 case lltok::kw_trunc:
5348 case lltok::kw_zext:
5349 case lltok::kw_sext:
5350 case lltok::kw_fptrunc:
5351 case lltok::kw_fpext:
5352 case lltok::kw_bitcast:
5353 case lltok::kw_addrspacecast:
5354 case lltok::kw_uitofp:
5355 case lltok::kw_sitofp:
5356 case lltok::kw_fptoui:
5357 case lltok::kw_fptosi:
5358 case lltok::kw_inttoptr:
5359 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5360 // Other.
5361 case lltok::kw_select: return ParseSelect(Inst, PFS);
5362 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5363 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5364 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5365 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5366 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5367 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5368 // Call.
5369 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5370 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5371 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5372 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5373 // Memory.
5374 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5375 case lltok::kw_load: return ParseLoad(Inst, PFS);
5376 case lltok::kw_store: return ParseStore(Inst, PFS);
5377 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5378 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5379 case lltok::kw_fence: return ParseFence(Inst, PFS);
5380 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5381 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5382 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5383 }
5384}
5385
5386/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5387bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5388 if (Opc == Instruction::FCmp) {
5389 switch (Lex.getKind()) {
5390 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5391 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5392 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5393 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5394 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5395 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5396 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5397 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5398 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5399 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5400 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5401 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5402 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5403 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5404 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5405 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5406 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5407 }
5408 } else {
5409 switch (Lex.getKind()) {
5410 default: return TokError("expected icmp predicate (e.g. 'eq')");
5411 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5412 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5413 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5414 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5415 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5416 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5417 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5418 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5419 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5420 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5421 }
5422 }
5423 Lex.Lex();
5424 return false;
5425}
5426
5427//===----------------------------------------------------------------------===//
5428// Terminator Instructions.
5429//===----------------------------------------------------------------------===//
5430
5431/// ParseRet - Parse a return instruction.
5432/// ::= 'ret' void (',' !dbg, !1)*
5433/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5434bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5435 PerFunctionState &PFS) {
5436 SMLoc TypeLoc = Lex.getLoc();
5437 Type *Ty = nullptr;
5438 if (ParseType(Ty, true /*void allowed*/)) return true;
5439
5440 Type *ResType = PFS.getFunction().getReturnType();
5441
5442 if (Ty->isVoidTy()) {
5443 if (!ResType->isVoidTy())
5444 return Error(TypeLoc, "value doesn't match function result type '" +
5445 getTypeString(ResType) + "'");
5446
5447 Inst = ReturnInst::Create(Context);
5448 return false;
5449 }
5450
5451 Value *RV;
5452 if (ParseValue(Ty, RV, PFS)) return true;
5453
5454 if (ResType != RV->getType())
5455 return Error(TypeLoc, "value doesn't match function result type '" +
5456 getTypeString(ResType) + "'");
5457
5458 Inst = ReturnInst::Create(Context, RV);
5459 return false;
5460}
5461
5462/// ParseBr
5463/// ::= 'br' TypeAndValue
5464/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5465bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5466 LocTy Loc, Loc2;
5467 Value *Op0;
5468 BasicBlock *Op1, *Op2;
5469 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5470
5471 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5472 Inst = BranchInst::Create(BB);
5473 return false;
5474 }
5475
5476 if (Op0->getType() != Type::getInt1Ty(Context))
5477 return Error(Loc, "branch condition must have 'i1' type");
5478
5479 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5480 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5481 ParseToken(lltok::comma, "expected ',' after true destination") ||
5482 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5483 return true;
5484
5485 Inst = BranchInst::Create(Op1, Op2, Op0);
5486 return false;
5487}
5488
5489/// ParseSwitch
5490/// Instruction
5491/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5492/// JumpTable
5493/// ::= (TypeAndValue ',' TypeAndValue)*
5494bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5495 LocTy CondLoc, BBLoc;
5496 Value *Cond;
5497 BasicBlock *DefaultBB;
5498 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5499 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5500 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5501 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5502 return true;
5503
5504 if (!Cond->getType()->isIntegerTy())
5505 return Error(CondLoc, "switch condition must have integer type");
5506
5507 // Parse the jump table pairs.
5508 SmallPtrSet<Value*, 32> SeenCases;
5509 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5510 while (Lex.getKind() != lltok::rsquare) {
5511 Value *Constant;
5512 BasicBlock *DestBB;
5513
5514 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5515 ParseToken(lltok::comma, "expected ',' after case value") ||
5516 ParseTypeAndBasicBlock(DestBB, PFS))
5517 return true;
5518
5519 if (!SeenCases.insert(Constant).second)
5520 return Error(CondLoc, "duplicate case value in switch");
5521 if (!isa<ConstantInt>(Constant))
5522 return Error(CondLoc, "case value is not a constant integer");
5523
5524 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5525 }
5526
5527 Lex.Lex(); // Eat the ']'.
5528
5529 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5530 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5531 SI->addCase(Table[i].first, Table[i].second);
5532 Inst = SI;
5533 return false;
5534}
5535
5536/// ParseIndirectBr
5537/// Instruction
5538/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5539bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5540 LocTy AddrLoc;
5541 Value *Address;
5542 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5543 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5544 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5545 return true;
5546
5547 if (!Address->getType()->isPointerTy())
5548 return Error(AddrLoc, "indirectbr address must have pointer type");
5549
5550 // Parse the destination list.
5551 SmallVector<BasicBlock*, 16> DestList;
5552
5553 if (Lex.getKind() != lltok::rsquare) {
5554 BasicBlock *DestBB;
5555 if (ParseTypeAndBasicBlock(DestBB, PFS))
5556 return true;
5557 DestList.push_back(DestBB);
5558
5559 while (EatIfPresent(lltok::comma)) {
5560 if (ParseTypeAndBasicBlock(DestBB, PFS))
5561 return true;
5562 DestList.push_back(DestBB);
5563 }
5564 }
5565
5566 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5567 return true;
5568
5569 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5570 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5571 IBI->addDestination(DestList[i]);
5572 Inst = IBI;
5573 return false;
5574}
5575
5576/// ParseInvoke
5577/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5578/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5579bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5580 LocTy CallLoc = Lex.getLoc();
5581 AttrBuilder RetAttrs, FnAttrs;
5582 std::vector<unsigned> FwdRefAttrGrps;
5583 LocTy NoBuiltinLoc;
5584 unsigned CC;
5585 Type *RetType = nullptr;
5586 LocTy RetTypeLoc;
5587 ValID CalleeID;
5588 SmallVector<ParamInfo, 16> ArgList;
5589 SmallVector<OperandBundleDef, 2> BundleList;
5590
5591 BasicBlock *NormalBB, *UnwindBB;
5592 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5593 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5594 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5595 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5596 NoBuiltinLoc) ||
5597 ParseOptionalOperandBundles(BundleList, PFS) ||
5598 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5599 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5600 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5601 ParseTypeAndBasicBlock(UnwindBB, PFS))
5602 return true;
5603
5604 // If RetType is a non-function pointer type, then this is the short syntax
5605 // for the call, which means that RetType is just the return type. Infer the
5606 // rest of the function argument types from the arguments that are present.
5607 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5608 if (!Ty) {
5609 // Pull out the types of all of the arguments...
5610 std::vector<Type*> ParamTypes;
5611 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5612 ParamTypes.push_back(ArgList[i].V->getType());
5613
5614 if (!FunctionType::isValidReturnType(RetType))
5615 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5616
5617 Ty = FunctionType::get(RetType, ParamTypes, false);
5618 }
5619
5620 CalleeID.FTy = Ty;
5621
5622 // Look up the callee.
5623 Value *Callee;
5624 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5625 return true;
5626
5627 // Set up the Attribute for the function.
5628 SmallVector<Value *, 8> Args;
5629 SmallVector<AttributeSet, 8> ArgAttrs;
5630
5631 // Loop through FunctionType's arguments and ensure they are specified
5632 // correctly. Also, gather any parameter attributes.
5633 FunctionType::param_iterator I = Ty->param_begin();
5634 FunctionType::param_iterator E = Ty->param_end();
5635 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5636 Type *ExpectedTy = nullptr;
5637 if (I != E) {
5638 ExpectedTy = *I++;
5639 } else if (!Ty->isVarArg()) {
5640 return Error(ArgList[i].Loc, "too many arguments specified");
5641 }
5642
5643 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5644 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5645 getTypeString(ExpectedTy) + "'");
5646 Args.push_back(ArgList[i].V);
5647 ArgAttrs.push_back(ArgList[i].Attrs);
5648 }
5649
5650 if (I != E)
5651 return Error(CallLoc, "not enough parameters specified for call");
5652
5653 if (FnAttrs.hasAlignmentAttr())
5654 return Error(CallLoc, "invoke instructions may not have an alignment");
5655
5656 // Finish off the Attribute and check them
5657 AttributeList PAL =
5658 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5659 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5660
5661 InvokeInst *II =
5662 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5663 II->setCallingConv(CC);
5664 II->setAttributes(PAL);
5665 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5666 Inst = II;
5667 return false;
5668}
5669
5670/// ParseResume
5671/// ::= 'resume' TypeAndValue
5672bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5673 Value *Exn; LocTy ExnLoc;
5674 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5675 return true;
5676
5677 ResumeInst *RI = ResumeInst::Create(Exn);
5678 Inst = RI;
5679 return false;
5680}
5681
5682bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5683 PerFunctionState &PFS) {
5684 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5685 return true;
5686
5687 while (Lex.getKind() != lltok::rsquare) {
5688 // If this isn't the first argument, we need a comma.
5689 if (!Args.empty() &&
5690 ParseToken(lltok::comma, "expected ',' in argument list"))
5691 return true;
5692
5693 // Parse the argument.
5694 LocTy ArgLoc;
5695 Type *ArgTy = nullptr;
5696 if (ParseType(ArgTy, ArgLoc))
5697 return true;
5698
5699 Value *V;
5700 if (ArgTy->isMetadataTy()) {
5701 if (ParseMetadataAsValue(V, PFS))
5702 return true;
5703 } else {
5704 if (ParseValue(ArgTy, V, PFS))
5705 return true;
5706 }
5707 Args.push_back(V);
5708 }
5709
5710 Lex.Lex(); // Lex the ']'.
5711 return false;
5712}
5713
5714/// ParseCleanupRet
5715/// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5716bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5717 Value *CleanupPad = nullptr;
5718
5719 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5720 return true;
5721
5722 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5723 return true;
5724
5725 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5726 return true;
5727
5728 BasicBlock *UnwindBB = nullptr;
5729 if (Lex.getKind() == lltok::kw_to) {
5730 Lex.Lex();
5731 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5732 return true;
5733 } else {
5734 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5735 return true;
5736 }
5737 }
5738
5739 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5740 return false;
5741}
5742
5743/// ParseCatchRet
5744/// ::= 'catchret' from Parent Value 'to' TypeAndValue
5745bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5746 Value *CatchPad = nullptr;
5747
5748 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5749 return true;
5750
5751 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5752 return true;
5753
5754 BasicBlock *BB;
5755 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5756 ParseTypeAndBasicBlock(BB, PFS))
5757 return true;
5758
5759 Inst = CatchReturnInst::Create(CatchPad, BB);
5760 return false;
5761}
5762
5763/// ParseCatchSwitch
5764/// ::= 'catchswitch' within Parent
5765bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5766 Value *ParentPad;
5767
5768 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5769 return true;
5770
5771 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5772 Lex.getKind() != lltok::LocalVarID)
5773 return TokError("expected scope value for catchswitch");
5774
5775 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5776 return true;
5777
5778 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))</