Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 3839, column 7
Assigned value is garbage or undefined

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~svn326246/build-llvm/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn326246/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn326246/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn326246/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~svn326246/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-2018-02-28-041547-14988-1 -x c++ /build/llvm-toolchain-snapshot-7~svn326246/lib/AsmParser/LLParser.cpp

/build/llvm-toolchain-snapshot-7~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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~svn326246/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
2615static bool isValidVariableType(Module *M, Type *Ty, Value *Val, bool IsCall) {
2616 if (Val->getType() == Ty)
2617 return true;
2618 // For calls we also accept variables in the program address space
2619 if (IsCall && isa<PointerType>(Ty)) {
2620 Type *TyInProgAS = cast<PointerType>(Ty)->getElementType()->getPointerTo(
2621 M->getDataLayout().getProgramAddressSpace());
2622 if (Val->getType() == TyInProgAS)
2623 return true;
2624 }
2625 return false;
2626}
2627
2628/// GetVal - Get a value with the specified name or ID, creating a
2629/// forward reference record if needed. This can return null if the value
2630/// exists but does not have the right type.
2631Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2632 LocTy Loc, bool IsCall) {
2633 // Look this name up in the normal function symbol table.
2634 Value *Val = F.getValueSymbolTable()->lookup(Name);
2635
2636 // If this is a forward reference for the value, see if we already created a
2637 // forward ref record.
2638 if (!Val) {
2639 auto I = ForwardRefVals.find(Name);
2640 if (I != ForwardRefVals.end())
2641 Val = I->second.first;
2642 }
2643
2644 // If we have the value in the symbol table or fwd-ref table, return it.
2645 if (Val) {
2646 if (isValidVariableType(P.M, Ty, Val, IsCall))
2647 return Val;
2648 if (Ty->isLabelTy())
2649 P.Error(Loc, "'%" + Name + "' is not a basic block");
2650 else
2651 P.Error(Loc, "'%" + Name + "' defined with type '" +
2652 getTypeString(Val->getType()) + "'");
2653 return nullptr;
2654 }
2655
2656 // Don't make placeholders with invalid type.
2657 if (!Ty->isFirstClassType()) {
2658 P.Error(Loc, "invalid use of a non-first-class type");
2659 return nullptr;
2660 }
2661
2662 // Otherwise, create a new forward reference for this value and remember it.
2663 Value *FwdVal;
2664 if (Ty->isLabelTy()) {
2665 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2666 } else {
2667 FwdVal = new Argument(Ty, Name);
2668 }
2669
2670 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2671 return FwdVal;
2672}
2673
2674Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2675 bool IsCall) {
2676 // Look this name up in the normal function symbol table.
2677 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2678
2679 // If this is a forward reference for the value, see if we already created a
2680 // forward ref record.
2681 if (!Val) {
2682 auto I = ForwardRefValIDs.find(ID);
2683 if (I != ForwardRefValIDs.end())
2684 Val = I->second.first;
2685 }
2686
2687 // If we have the value in the symbol table or fwd-ref table, return it.
2688 if (Val) {
2689 if (isValidVariableType(P.M, Ty, Val, IsCall))
2690 return Val;
2691 if (Ty->isLabelTy())
2692 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2693 else
2694 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2695 getTypeString(Val->getType()) + "'");
2696 return nullptr;
2697 }
2698
2699 if (!Ty->isFirstClassType()) {
2700 P.Error(Loc, "invalid use of a non-first-class type");
2701 return nullptr;
2702 }
2703
2704 // Otherwise, create a new forward reference for this value and remember it.
2705 Value *FwdVal;
2706 if (Ty->isLabelTy()) {
2707 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2708 } else {
2709 FwdVal = new Argument(Ty);
2710 }
2711
2712 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2713 return FwdVal;
2714}
2715
2716/// SetInstName - After an instruction is parsed and inserted into its
2717/// basic block, this installs its name.
2718bool LLParser::PerFunctionState::SetInstName(int NameID,
2719 const std::string &NameStr,
2720 LocTy NameLoc, Instruction *Inst) {
2721 // If this instruction has void type, it cannot have a name or ID specified.
2722 if (Inst->getType()->isVoidTy()) {
2723 if (NameID != -1 || !NameStr.empty())
2724 return P.Error(NameLoc, "instructions returning void cannot have a name");
2725 return false;
2726 }
2727
2728 // If this was a numbered instruction, verify that the instruction is the
2729 // expected value and resolve any forward references.
2730 if (NameStr.empty()) {
2731 // If neither a name nor an ID was specified, just use the next ID.
2732 if (NameID == -1)
2733 NameID = NumberedVals.size();
2734
2735 if (unsigned(NameID) != NumberedVals.size())
2736 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2737 Twine(NumberedVals.size()) + "'");
2738
2739 auto FI = ForwardRefValIDs.find(NameID);
2740 if (FI != ForwardRefValIDs.end()) {
2741 Value *Sentinel = FI->second.first;
2742 if (Sentinel->getType() != Inst->getType())
2743 return P.Error(NameLoc, "instruction forward referenced with type '" +
2744 getTypeString(FI->second.first->getType()) + "'");
2745
2746 Sentinel->replaceAllUsesWith(Inst);
2747 Sentinel->deleteValue();
2748 ForwardRefValIDs.erase(FI);
2749 }
2750
2751 NumberedVals.push_back(Inst);
2752 return false;
2753 }
2754
2755 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2756 auto FI = ForwardRefVals.find(NameStr);
2757 if (FI != ForwardRefVals.end()) {
2758 Value *Sentinel = FI->second.first;
2759 if (Sentinel->getType() != Inst->getType())
2760 return P.Error(NameLoc, "instruction forward referenced with type '" +
2761 getTypeString(FI->second.first->getType()) + "'");
2762
2763 Sentinel->replaceAllUsesWith(Inst);
2764 Sentinel->deleteValue();
2765 ForwardRefVals.erase(FI);
2766 }
2767
2768 // Set the name on the instruction.
2769 Inst->setName(NameStr);
2770
2771 if (Inst->getName() != NameStr)
2772 return P.Error(NameLoc, "multiple definition of local value named '" +
2773 NameStr + "'");
2774 return false;
2775}
2776
2777/// GetBB - Get a basic block with the specified name or ID, creating a
2778/// forward reference record if needed.
2779BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2780 LocTy Loc) {
2781 return dyn_cast_or_null<BasicBlock>(
2782 GetVal(Name, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2783}
2784
2785BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2786 return dyn_cast_or_null<BasicBlock>(
2787 GetVal(ID, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2788}
2789
2790/// DefineBB - Define the specified basic block, which is either named or
2791/// unnamed. If there is an error, this returns null otherwise it returns
2792/// the block being defined.
2793BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2794 LocTy Loc) {
2795 BasicBlock *BB;
2796 if (Name.empty())
2797 BB = GetBB(NumberedVals.size(), Loc);
2798 else
2799 BB = GetBB(Name, Loc);
2800 if (!BB) return nullptr; // Already diagnosed error.
2801
2802 // Move the block to the end of the function. Forward ref'd blocks are
2803 // inserted wherever they happen to be referenced.
2804 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2805
2806 // Remove the block from forward ref sets.
2807 if (Name.empty()) {
2808 ForwardRefValIDs.erase(NumberedVals.size());
2809 NumberedVals.push_back(BB);
2810 } else {
2811 // BB forward references are already in the function symbol table.
2812 ForwardRefVals.erase(Name);
2813 }
2814
2815 return BB;
2816}
2817
2818//===----------------------------------------------------------------------===//
2819// Constants.
2820//===----------------------------------------------------------------------===//
2821
2822/// ParseValID - Parse an abstract value that doesn't necessarily have a
2823/// type implied. For example, if we parse "4" we don't know what integer type
2824/// it has. The value will later be combined with its type and checked for
2825/// sanity. PFS is used to convert function-local operands of metadata (since
2826/// metadata operands are not just parsed here but also converted to values).
2827/// PFS can be null when we are not parsing metadata values inside a function.
2828bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2829 ID.Loc = Lex.getLoc();
2830 switch (Lex.getKind()) {
2831 default: return TokError("expected value token");
2832 case lltok::GlobalID: // @42
2833 ID.UIntVal = Lex.getUIntVal();
2834 ID.Kind = ValID::t_GlobalID;
2835 break;
2836 case lltok::GlobalVar: // @foo
2837 ID.StrVal = Lex.getStrVal();
2838 ID.Kind = ValID::t_GlobalName;
2839 break;
2840 case lltok::LocalVarID: // %42
2841 ID.UIntVal = Lex.getUIntVal();
2842 ID.Kind = ValID::t_LocalID;
2843 break;
2844 case lltok::LocalVar: // %foo
2845 ID.StrVal = Lex.getStrVal();
2846 ID.Kind = ValID::t_LocalName;
2847 break;
2848 case lltok::APSInt:
2849 ID.APSIntVal = Lex.getAPSIntVal();
2850 ID.Kind = ValID::t_APSInt;
2851 break;
2852 case lltok::APFloat:
2853 ID.APFloatVal = Lex.getAPFloatVal();
2854 ID.Kind = ValID::t_APFloat;
2855 break;
2856 case lltok::kw_true:
2857 ID.ConstantVal = ConstantInt::getTrue(Context);
2858 ID.Kind = ValID::t_Constant;
2859 break;
2860 case lltok::kw_false:
2861 ID.ConstantVal = ConstantInt::getFalse(Context);
2862 ID.Kind = ValID::t_Constant;
2863 break;
2864 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2865 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2866 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2867 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2868
2869 case lltok::lbrace: {
2870 // ValID ::= '{' ConstVector '}'
2871 Lex.Lex();
2872 SmallVector<Constant*, 16> Elts;
2873 if (ParseGlobalValueVector(Elts) ||
2874 ParseToken(lltok::rbrace, "expected end of struct constant"))
2875 return true;
2876
2877 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2878 ID.UIntVal = Elts.size();
2879 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2880 Elts.size() * sizeof(Elts[0]));
2881 ID.Kind = ValID::t_ConstantStruct;
2882 return false;
2883 }
2884 case lltok::less: {
2885 // ValID ::= '<' ConstVector '>' --> Vector.
2886 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2887 Lex.Lex();
2888 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2889
2890 SmallVector<Constant*, 16> Elts;
2891 LocTy FirstEltLoc = Lex.getLoc();
2892 if (ParseGlobalValueVector(Elts) ||
2893 (isPackedStruct &&
2894 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2895 ParseToken(lltok::greater, "expected end of constant"))
2896 return true;
2897
2898 if (isPackedStruct) {
2899 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2900 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2901 Elts.size() * sizeof(Elts[0]));
2902 ID.UIntVal = Elts.size();
2903 ID.Kind = ValID::t_PackedConstantStruct;
2904 return false;
2905 }
2906
2907 if (Elts.empty())
2908 return Error(ID.Loc, "constant vector must not be empty");
2909
2910 if (!Elts[0]->getType()->isIntegerTy() &&
2911 !Elts[0]->getType()->isFloatingPointTy() &&
2912 !Elts[0]->getType()->isPointerTy())
2913 return Error(FirstEltLoc,
2914 "vector elements must have integer, pointer or floating point type");
2915
2916 // Verify that all the vector elements have the same type.
2917 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2918 if (Elts[i]->getType() != Elts[0]->getType())
2919 return Error(FirstEltLoc,
2920 "vector element #" + Twine(i) +
2921 " is not of type '" + getTypeString(Elts[0]->getType()));
2922
2923 ID.ConstantVal = ConstantVector::get(Elts);
2924 ID.Kind = ValID::t_Constant;
2925 return false;
2926 }
2927 case lltok::lsquare: { // Array Constant
2928 Lex.Lex();
2929 SmallVector<Constant*, 16> Elts;
2930 LocTy FirstEltLoc = Lex.getLoc();
2931 if (ParseGlobalValueVector(Elts) ||
2932 ParseToken(lltok::rsquare, "expected end of array constant"))
2933 return true;
2934
2935 // Handle empty element.
2936 if (Elts.empty()) {
2937 // Use undef instead of an array because it's inconvenient to determine
2938 // the element type at this point, there being no elements to examine.
2939 ID.Kind = ValID::t_EmptyArray;
2940 return false;
2941 }
2942
2943 if (!Elts[0]->getType()->isFirstClassType())
2944 return Error(FirstEltLoc, "invalid array element type: " +
2945 getTypeString(Elts[0]->getType()));
2946
2947 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2948
2949 // Verify all elements are correct type!
2950 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2951 if (Elts[i]->getType() != Elts[0]->getType())
2952 return Error(FirstEltLoc,
2953 "array element #" + Twine(i) +
2954 " is not of type '" + getTypeString(Elts[0]->getType()));
2955 }
2956
2957 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2958 ID.Kind = ValID::t_Constant;
2959 return false;
2960 }
2961 case lltok::kw_c: // c "foo"
2962 Lex.Lex();
2963 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2964 false);
2965 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2966 ID.Kind = ValID::t_Constant;
2967 return false;
2968
2969 case lltok::kw_asm: {
2970 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2971 // STRINGCONSTANT
2972 bool HasSideEffect, AlignStack, AsmDialect;
2973 Lex.Lex();
2974 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2975 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2976 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2977 ParseStringConstant(ID.StrVal) ||
2978 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2979 ParseToken(lltok::StringConstant, "expected constraint string"))
2980 return true;
2981 ID.StrVal2 = Lex.getStrVal();
2982 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2983 (unsigned(AsmDialect)<<2);
2984 ID.Kind = ValID::t_InlineAsm;
2985 return false;
2986 }
2987
2988 case lltok::kw_blockaddress: {
2989 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2990 Lex.Lex();
2991
2992 ValID Fn, Label;
2993
2994 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2995 ParseValID(Fn) ||
2996 ParseToken(lltok::comma, "expected comma in block address expression")||
2997 ParseValID(Label) ||
2998 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2999 return true;
3000
3001 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
3002 return Error(Fn.Loc, "expected function name in blockaddress");
3003 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
3004 return Error(Label.Loc, "expected basic block name in blockaddress");
3005
3006 // Try to find the function (but skip it if it's forward-referenced).
3007 GlobalValue *GV = nullptr;
3008 if (Fn.Kind == ValID::t_GlobalID) {
3009 if (Fn.UIntVal < NumberedVals.size())
3010 GV = NumberedVals[Fn.UIntVal];
3011 } else if (!ForwardRefVals.count(Fn.StrVal)) {
3012 GV = M->getNamedValue(Fn.StrVal);
3013 }
3014 Function *F = nullptr;
3015 if (GV) {
3016 // Confirm that it's actually a function with a definition.
3017 if (!isa<Function>(GV))
3018 return Error(Fn.Loc, "expected function name in blockaddress");
3019 F = cast<Function>(GV);
3020 if (F->isDeclaration())
3021 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
3022 }
3023
3024 if (!F) {
3025 // Make a global variable as a placeholder for this reference.
3026 GlobalValue *&FwdRef =
3027 ForwardRefBlockAddresses.insert(std::make_pair(
3028 std::move(Fn),
3029 std::map<ValID, GlobalValue *>()))
3030 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3031 .first->second;
3032 if (!FwdRef)
3033 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3034 GlobalValue::InternalLinkage, nullptr, "");
3035 ID.ConstantVal = FwdRef;
3036 ID.Kind = ValID::t_Constant;
3037 return false;
3038 }
3039
3040 // We found the function; now find the basic block. Don't use PFS, since we
3041 // might be inside a constant expression.
3042 BasicBlock *BB;
3043 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3044 if (Label.Kind == ValID::t_LocalID)
3045 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3046 else
3047 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3048 if (!BB)
3049 return Error(Label.Loc, "referenced value is not a basic block");
3050 } else {
3051 if (Label.Kind == ValID::t_LocalID)
3052 return Error(Label.Loc, "cannot take address of numeric label after "
3053 "the function is defined");
3054 BB = dyn_cast_or_null<BasicBlock>(
3055 F->getValueSymbolTable()->lookup(Label.StrVal));
3056 if (!BB)
3057 return Error(Label.Loc, "referenced value is not a basic block");
3058 }
3059
3060 ID.ConstantVal = BlockAddress::get(F, BB);
3061 ID.Kind = ValID::t_Constant;
3062 return false;
3063 }
3064
3065 case lltok::kw_trunc:
3066 case lltok::kw_zext:
3067 case lltok::kw_sext:
3068 case lltok::kw_fptrunc:
3069 case lltok::kw_fpext:
3070 case lltok::kw_bitcast:
3071 case lltok::kw_addrspacecast:
3072 case lltok::kw_uitofp:
3073 case lltok::kw_sitofp:
3074 case lltok::kw_fptoui:
3075 case lltok::kw_fptosi:
3076 case lltok::kw_inttoptr:
3077 case lltok::kw_ptrtoint: {
3078 unsigned Opc = Lex.getUIntVal();
3079 Type *DestTy = nullptr;
3080 Constant *SrcVal;
3081 Lex.Lex();
3082 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3083 ParseGlobalTypeAndValue(SrcVal) ||
3084 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3085 ParseType(DestTy) ||
3086 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3087 return true;
3088 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3089 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3090 getTypeString(SrcVal->getType()) + "' to '" +
3091 getTypeString(DestTy) + "'");
3092 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3093 SrcVal, DestTy);
3094 ID.Kind = ValID::t_Constant;
3095 return false;
3096 }
3097 case lltok::kw_extractvalue: {
3098 Lex.Lex();
3099 Constant *Val;
3100 SmallVector<unsigned, 4> Indices;
3101 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3102 ParseGlobalTypeAndValue(Val) ||
3103 ParseIndexList(Indices) ||
3104 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3105 return true;
3106
3107 if (!Val->getType()->isAggregateType())
3108 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3109 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3110 return Error(ID.Loc, "invalid indices for extractvalue");
3111 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3112 ID.Kind = ValID::t_Constant;
3113 return false;
3114 }
3115 case lltok::kw_insertvalue: {
3116 Lex.Lex();
3117 Constant *Val0, *Val1;
3118 SmallVector<unsigned, 4> Indices;
3119 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3120 ParseGlobalTypeAndValue(Val0) ||
3121 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3122 ParseGlobalTypeAndValue(Val1) ||
3123 ParseIndexList(Indices) ||
3124 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3125 return true;
3126 if (!Val0->getType()->isAggregateType())
3127 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3128 Type *IndexedType =
3129 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3130 if (!IndexedType)
3131 return Error(ID.Loc, "invalid indices for insertvalue");
3132 if (IndexedType != Val1->getType())
3133 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3134 getTypeString(Val1->getType()) +
3135 "' instead of '" + getTypeString(IndexedType) +
3136 "'");
3137 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3138 ID.Kind = ValID::t_Constant;
3139 return false;
3140 }
3141 case lltok::kw_icmp:
3142 case lltok::kw_fcmp: {
3143 unsigned PredVal, Opc = Lex.getUIntVal();
3144 Constant *Val0, *Val1;
3145 Lex.Lex();
3146 if (ParseCmpPredicate(PredVal, Opc) ||
3147 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3148 ParseGlobalTypeAndValue(Val0) ||
3149 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3150 ParseGlobalTypeAndValue(Val1) ||
3151 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3152 return true;
3153
3154 if (Val0->getType() != Val1->getType())
3155 return Error(ID.Loc, "compare operands must have the same type");
3156
3157 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3158
3159 if (Opc == Instruction::FCmp) {
3160 if (!Val0->getType()->isFPOrFPVectorTy())
3161 return Error(ID.Loc, "fcmp requires floating point operands");
3162 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3163 } else {
3164 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3164, __extension__ __PRETTY_FUNCTION__))
;
3165 if (!Val0->getType()->isIntOrIntVectorTy() &&
3166 !Val0->getType()->isPtrOrPtrVectorTy())
3167 return Error(ID.Loc, "icmp requires pointer or integer operands");
3168 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3169 }
3170 ID.Kind = ValID::t_Constant;
3171 return false;
3172 }
3173
3174 // Binary Operators.
3175 case lltok::kw_add:
3176 case lltok::kw_fadd:
3177 case lltok::kw_sub:
3178 case lltok::kw_fsub:
3179 case lltok::kw_mul:
3180 case lltok::kw_fmul:
3181 case lltok::kw_udiv:
3182 case lltok::kw_sdiv:
3183 case lltok::kw_fdiv:
3184 case lltok::kw_urem:
3185 case lltok::kw_srem:
3186 case lltok::kw_frem:
3187 case lltok::kw_shl:
3188 case lltok::kw_lshr:
3189 case lltok::kw_ashr: {
3190 bool NUW = false;
3191 bool NSW = false;
3192 bool Exact = false;
3193 unsigned Opc = Lex.getUIntVal();
3194 Constant *Val0, *Val1;
3195 Lex.Lex();
3196 LocTy ModifierLoc = Lex.getLoc();
3197 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3198 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3199 if (EatIfPresent(lltok::kw_nuw))
3200 NUW = true;
3201 if (EatIfPresent(lltok::kw_nsw)) {
3202 NSW = true;
3203 if (EatIfPresent(lltok::kw_nuw))
3204 NUW = true;
3205 }
3206 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3207 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3208 if (EatIfPresent(lltok::kw_exact))
3209 Exact = true;
3210 }
3211 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3212 ParseGlobalTypeAndValue(Val0) ||
3213 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3214 ParseGlobalTypeAndValue(Val1) ||
3215 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3216 return true;
3217 if (Val0->getType() != Val1->getType())
3218 return Error(ID.Loc, "operands of constexpr must have same type");
3219 if (!Val0->getType()->isIntOrIntVectorTy()) {
3220 if (NUW)
3221 return Error(ModifierLoc, "nuw only applies to integer operations");
3222 if (NSW)
3223 return Error(ModifierLoc, "nsw only applies to integer operations");
3224 }
3225 // Check that the type is valid for the operator.
3226 switch (Opc) {
3227 case Instruction::Add:
3228 case Instruction::Sub:
3229 case Instruction::Mul:
3230 case Instruction::UDiv:
3231 case Instruction::SDiv:
3232 case Instruction::URem:
3233 case Instruction::SRem:
3234 case Instruction::Shl:
3235 case Instruction::AShr:
3236 case Instruction::LShr:
3237 if (!Val0->getType()->isIntOrIntVectorTy())
3238 return Error(ID.Loc, "constexpr requires integer operands");
3239 break;
3240 case Instruction::FAdd:
3241 case Instruction::FSub:
3242 case Instruction::FMul:
3243 case Instruction::FDiv:
3244 case Instruction::FRem:
3245 if (!Val0->getType()->isFPOrFPVectorTy())
3246 return Error(ID.Loc, "constexpr requires fp operands");
3247 break;
3248 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-7~svn326246/lib/AsmParser/LLParser.cpp"
, 3248)
;
3249 }
3250 unsigned Flags = 0;
3251 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3252 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3253 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3254 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3255 ID.ConstantVal = C;
3256 ID.Kind = ValID::t_Constant;
3257 return false;
3258 }
3259
3260 // Logical Operations
3261 case lltok::kw_and:
3262 case lltok::kw_or:
3263 case lltok::kw_xor: {
3264 unsigned Opc = Lex.getUIntVal();
3265 Constant *Val0, *Val1;
3266 Lex.Lex();
3267 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3268 ParseGlobalTypeAndValue(Val0) ||
3269 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3270 ParseGlobalTypeAndValue(Val1) ||
3271 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3272 return true;
3273 if (Val0->getType() != Val1->getType())
3274 return Error(ID.Loc, "operands of constexpr must have same type");
3275 if (!Val0->getType()->isIntOrIntVectorTy())
3276 return Error(ID.Loc,
3277 "constexpr requires integer or integer vector operands");
3278 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3279 ID.Kind = ValID::t_Constant;
3280 return false;
3281 }
3282
3283 case lltok::kw_getelementptr:
3284 case lltok::kw_shufflevector:
3285 case lltok::kw_insertelement:
3286 case lltok::kw_extractelement:
3287 case lltok::kw_select: {
3288 unsigned Opc = Lex.getUIntVal();
3289 SmallVector<Constant*, 16> Elts;
3290 bool InBounds = false;
3291 Type *Ty;
3292 Lex.Lex();
3293
3294 if (Opc == Instruction::GetElementPtr)
3295 InBounds = EatIfPresent(lltok::kw_inbounds);
3296
3297 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3298 return true;
3299
3300 LocTy ExplicitTypeLoc = Lex.getLoc();
3301 if (Opc == Instruction::GetElementPtr) {
3302 if (ParseType(Ty) ||
3303 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3304 return true;
3305 }
3306
3307 Optional<unsigned> InRangeOp;
3308 if (ParseGlobalValueVector(
3309 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3310 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3311 return true;
3312
3313 if (Opc == Instruction::GetElementPtr) {
3314 if (Elts.size() == 0 ||
3315 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3316 return Error(ID.Loc, "base of getelementptr must be a pointer");
3317
3318 Type *BaseType = Elts[0]->getType();
3319 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3320 if (Ty != BasePointerType->getElementType())
3321 return Error(
3322 ExplicitTypeLoc,
3323 "explicit pointee type doesn't match operand's pointee type");
3324
3325 unsigned GEPWidth =
3326 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3327
3328 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3329 for (Constant *Val : Indices) {
3330 Type *ValTy = Val->getType();
3331 if (!ValTy->isIntOrIntVectorTy())
3332 return Error(ID.Loc, "getelementptr index must be an integer");
3333 if (ValTy->isVectorTy()) {
3334 unsigned ValNumEl = ValTy->getVectorNumElements();
3335 if (GEPWidth && (ValNumEl != GEPWidth))
3336 return Error(
3337 ID.Loc,
3338 "getelementptr vector index has a wrong number of elements");
3339 // GEPWidth may have been unknown because the base is a scalar,
3340 // but it is known now.
3341 GEPWidth = ValNumEl;
3342 }
3343 }
3344
3345 SmallPtrSet<Type*, 4> Visited;
3346 if (!Indices.empty() && !Ty->isSized(&Visited))
3347 return Error(ID.Loc, "base element of getelementptr must be sized");
3348
3349 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3350 return Error(ID.Loc, "invalid getelementptr indices");
3351
3352 if (InRangeOp) {
3353 if (*InRangeOp == 0)
3354 return Error(ID.Loc,
3355 "inrange keyword may not appear on pointer operand");
3356 --*InRangeOp;
3357 }
3358
3359 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3360 InBounds, InRangeOp);
3361 } else if (Opc == Instruction::Select) {
3362 if (Elts.size() != 3)
3363 return Error(ID.Loc, "expected three operands to select");
3364 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3365 Elts[2]))
3366 return Error(ID.Loc, Reason);
3367 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3368 } else if (Opc == Instruction::ShuffleVector) {
3369 if (Elts.size() != 3)
3370 return Error(ID.Loc, "expected three operands to shufflevector");
3371 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3372 return Error(ID.Loc, "invalid operands to shufflevector");
3373 ID.ConstantVal =
3374 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3375 } else if (Opc == Instruction::ExtractElement) {
3376 if (Elts.size() != 2)
3377 return Error(ID.Loc, "expected two operands to extractelement");
3378 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3379 return Error(ID.Loc, "invalid extractelement operands");
3380 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3381 } else {
3382 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3382, __extension__ __PRETTY_FUNCTION__))
;
3383 if (Elts.size() != 3)
3384 return Error(ID.Loc, "expected three operands to insertelement");
3385 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3386 return Error(ID.Loc, "invalid insertelement operands");
3387 ID.ConstantVal =
3388 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3389 }
3390
3391 ID.Kind = ValID::t_Constant;
3392 return false;
3393 }
3394 }
3395
3396 Lex.Lex();
3397 return false;
3398}
3399
3400/// ParseGlobalValue - Parse a global value with the specified type.
3401bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3402 C = nullptr;
3403 ValID ID;
3404 Value *V = nullptr;
3405 bool Parsed = ParseValID(ID) ||
3406 ConvertValIDToValue(Ty, ID, V, nullptr, /*IsCall=*/false);
3407 if (V && !(C = dyn_cast<Constant>(V)))
3408 return Error(ID.Loc, "global values must be constants");
3409 return Parsed;
3410}
3411
3412bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3413 Type *Ty = nullptr;
3414 return ParseType(Ty) ||
3415 ParseGlobalValue(Ty, V);
3416}
3417
3418bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3419 C = nullptr;
3420
3421 LocTy KwLoc = Lex.getLoc();
3422 if (!EatIfPresent(lltok::kw_comdat))
3423 return false;
3424
3425 if (EatIfPresent(lltok::lparen)) {
3426 if (Lex.getKind() != lltok::ComdatVar)
3427 return TokError("expected comdat variable");
3428 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3429 Lex.Lex();
3430 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3431 return true;
3432 } else {
3433 if (GlobalName.empty())
3434 return TokError("comdat cannot be unnamed");
3435 C = getComdat(GlobalName, KwLoc);
3436 }
3437
3438 return false;
3439}
3440
3441/// ParseGlobalValueVector
3442/// ::= /*empty*/
3443/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3444bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3445 Optional<unsigned> *InRangeOp) {
3446 // Empty list.
3447 if (Lex.getKind() == lltok::rbrace ||
3448 Lex.getKind() == lltok::rsquare ||
3449 Lex.getKind() == lltok::greater ||
3450 Lex.getKind() == lltok::rparen)
3451 return false;
3452
3453 do {
3454 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3455 *InRangeOp = Elts.size();
3456
3457 Constant *C;
3458 if (ParseGlobalTypeAndValue(C)) return true;
3459 Elts.push_back(C);
3460 } while (EatIfPresent(lltok::comma));
3461
3462 return false;
3463}
3464
3465bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3466 SmallVector<Metadata *, 16> Elts;
3467 if (ParseMDNodeVector(Elts))
3468 return true;
3469
3470 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3471 return false;
3472}
3473
3474/// MDNode:
3475/// ::= !{ ... }
3476/// ::= !7
3477/// ::= !DILocation(...)
3478bool LLParser::ParseMDNode(MDNode *&N) {
3479 if (Lex.getKind() == lltok::MetadataVar)
3480 return ParseSpecializedMDNode(N);
3481
3482 return ParseToken(lltok::exclaim, "expected '!' here") ||
3483 ParseMDNodeTail(N);
3484}
3485
3486bool LLParser::ParseMDNodeTail(MDNode *&N) {
3487 // !{ ... }
3488 if (Lex.getKind() == lltok::lbrace)
3489 return ParseMDTuple(N);
3490
3491 // !42
3492 return ParseMDNodeID(N);
3493}
3494
3495namespace {
3496
3497/// Structure to represent an optional metadata field.
3498template <class FieldTy> struct MDFieldImpl {
3499 typedef MDFieldImpl ImplTy;
3500 FieldTy Val;
3501 bool Seen;
3502
3503 void assign(FieldTy Val) {
3504 Seen = true;
3505 this->Val = std::move(Val);
3506 }
3507
3508 explicit MDFieldImpl(FieldTy Default)
3509 : Val(std::move(Default)), Seen(false) {}
3510};
3511
3512/// Structure to represent an optional metadata field that
3513/// can be of either type (A or B) and encapsulates the
3514/// MD<typeofA>Field and MD<typeofB>Field structs, so not
3515/// to reimplement the specifics for representing each Field.
3516template <class FieldTypeA, class FieldTypeB> struct MDEitherFieldImpl {
3517 typedef MDEitherFieldImpl<FieldTypeA, FieldTypeB> ImplTy;
3518 FieldTypeA A;
3519 FieldTypeB B;
3520 bool Seen;
3521
3522 enum {
3523 IsInvalid = 0,
3524 IsTypeA = 1,
3525 IsTypeB = 2
3526 } WhatIs;
3527
3528 void assign(FieldTypeA A) {
3529 Seen = true;
3530 this->A = std::move(A);
3531 WhatIs = IsTypeA;
3532 }
3533
3534 void assign(FieldTypeB B) {
3535 Seen = true;
3536 this->B = std::move(B);
3537 WhatIs = IsTypeB;
3538 }
3539
3540 explicit MDEitherFieldImpl(FieldTypeA DefaultA, FieldTypeB DefaultB)
3541 : A(std::move(DefaultA)), B(std::move(DefaultB)), Seen(false),
3542 WhatIs(IsInvalid) {}
3543};
3544
3545struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3546 uint64_t Max;
3547
3548 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3549 : ImplTy(Default), Max(Max) {}
3550};
3551
3552struct LineField : public MDUnsignedField {
3553 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3554};
3555
3556struct ColumnField : public MDUnsignedField {
3557 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3558};
3559
3560struct DwarfTagField : public MDUnsignedField {
3561 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3562 DwarfTagField(dwarf::Tag DefaultTag)
3563 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3564};
3565
3566struct DwarfMacinfoTypeField : public MDUnsignedField {
3567 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3568 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3569 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3570};
3571
3572struct DwarfAttEncodingField : public MDUnsignedField {
3573 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3574};
3575
3576struct DwarfVirtualityField : public MDUnsignedField {
3577 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3578};
3579
3580struct DwarfLangField : public MDUnsignedField {
3581 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3582};
3583
3584struct DwarfCCField : public MDUnsignedField {
3585 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3586};
3587
3588struct EmissionKindField : public MDUnsignedField {
3589 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3590};
3591
3592struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3593 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3594};
3595
3596struct MDSignedField : public MDFieldImpl<int64_t> {
3597 int64_t Min;
3598 int64_t Max;
3599
3600 MDSignedField(int64_t Default = 0)
3601 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3602 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3603 : ImplTy(Default), Min(Min), Max(Max) {}
3604};
3605
3606struct MDBoolField : public MDFieldImpl<bool> {
3607 MDBoolField(bool Default = false) : ImplTy(Default) {}
3608};
3609
3610struct MDField : public MDFieldImpl<Metadata *> {
3611 bool AllowNull;
3612
3613 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3614};
3615
3616struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3617 MDConstant() : ImplTy(nullptr) {}
3618};
3619
3620struct MDStringField : public MDFieldImpl<MDString *> {
3621 bool AllowEmpty;
3622 MDStringField(bool AllowEmpty = true)
3623 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3624};
3625
3626struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3627 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3628};
3629
3630struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3631 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3632};
3633
3634struct MDSignedOrMDField : MDEitherFieldImpl<MDSignedField, MDField> {
3635 MDSignedOrMDField(int64_t Default = 0, bool AllowNull = true)
3636 : ImplTy(MDSignedField(Default), MDField(AllowNull)) {}
3637
3638 MDSignedOrMDField(int64_t Default, int64_t Min, int64_t Max,
3639 bool AllowNull = true)
3640 : ImplTy(MDSignedField(Default, Min, Max), MDField(AllowNull)) {}
3641
3642 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3643 bool isMDField() 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3645, __extension__ __PRETTY_FUNCTION__))
;
3646 return A.Val;
3647 }
3648 Metadata *getMDFieldValue() const {
3649 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3649, __extension__ __PRETTY_FUNCTION__))
;
3650 return B.Val;
3651 }
3652};
3653
3654struct MDSignedOrUnsignedField
3655 : MDEitherFieldImpl<MDSignedField, MDUnsignedField> {
3656 MDSignedOrUnsignedField() : ImplTy(MDSignedField(0), MDUnsignedField(0)) {}
3657
3658 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3659 bool isMDUnsignedField() const { return WhatIs == IsTypeB; }
3660 int64_t getMDSignedValue() const {
3661 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3661, __extension__ __PRETTY_FUNCTION__))
;
3662 return A.Val;
3663 }
3664 uint64_t getMDUnsignedValue() const {
3665 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3665, __extension__ __PRETTY_FUNCTION__))
;
3666 return B.Val;
3667 }
3668};
3669
3670} // end anonymous namespace
3671
3672namespace llvm {
3673
3674template <>
3675bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3676 MDUnsignedField &Result) {
3677 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3678 return TokError("expected unsigned integer");
3679
3680 auto &U = Lex.getAPSIntVal();
3681 if (U.ugt(Result.Max))
3682 return TokError("value for '" + Name + "' too large, limit is " +
3683 Twine(Result.Max));
3684 Result.assign(U.getZExtValue());
3685 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3685, __extension__ __PRETTY_FUNCTION__))
;
3686 Lex.Lex();
3687 return false;
3688}
3689
3690template <>
3691bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3692 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3693}
3694template <>
3695bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3696 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3697}
3698
3699template <>
3700bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3701 if (Lex.getKind() == lltok::APSInt)
3702 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3703
3704 if (Lex.getKind() != lltok::DwarfTag)
3705 return TokError("expected DWARF tag");
3706
3707 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3708 if (Tag == dwarf::DW_TAG_invalid)
3709 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3710 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3710, __extension__ __PRETTY_FUNCTION__))
;
3711
3712 Result.assign(Tag);
3713 Lex.Lex();
3714 return false;
3715}
3716
3717template <>
3718bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3719 DwarfMacinfoTypeField &Result) {
3720 if (Lex.getKind() == lltok::APSInt)
3721 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3722
3723 if (Lex.getKind() != lltok::DwarfMacinfo)
3724 return TokError("expected DWARF macinfo type");
3725
3726 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3727 if (Macinfo == dwarf::DW_MACINFO_invalid)
3728 return TokError(
3729 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3730 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3730, __extension__ __PRETTY_FUNCTION__))
;
3731
3732 Result.assign(Macinfo);
3733 Lex.Lex();
3734 return false;
3735}
3736
3737template <>
3738bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3739 DwarfVirtualityField &Result) {
3740 if (Lex.getKind() == lltok::APSInt)
3741 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3742
3743 if (Lex.getKind() != lltok::DwarfVirtuality)
3744 return TokError("expected DWARF virtuality code");
3745
3746 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3747 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3748 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3749 Lex.getStrVal() + "'");
3750 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3750, __extension__ __PRETTY_FUNCTION__))
;
3751 Result.assign(Virtuality);
3752 Lex.Lex();
3753 return false;
3754}
3755
3756template <>
3757bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3758 if (Lex.getKind() == lltok::APSInt)
3759 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3760
3761 if (Lex.getKind() != lltok::DwarfLang)
3762 return TokError("expected DWARF language");
3763
3764 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3765 if (!Lang)
3766 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3767 "'");
3768 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3768, __extension__ __PRETTY_FUNCTION__))
;
3769 Result.assign(Lang);
3770 Lex.Lex();
3771 return false;
3772}
3773
3774template <>
3775bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3776 if (Lex.getKind() == lltok::APSInt)
3777 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3778
3779 if (Lex.getKind() != lltok::DwarfCC)
3780 return TokError("expected DWARF calling convention");
3781
3782 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3783 if (!CC)
3784 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3785 "'");
3786 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3786, __extension__ __PRETTY_FUNCTION__))
;
3787 Result.assign(CC);
3788 Lex.Lex();
3789 return false;
3790}
3791
3792template <>
3793bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3794 if (Lex.getKind() == lltok::APSInt)
3795 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3796
3797 if (Lex.getKind() != lltok::EmissionKind)
3798 return TokError("expected emission kind");
3799
3800 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3801 if (!Kind)
3802 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3803 "'");
3804 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3804, __extension__ __PRETTY_FUNCTION__))
;
3805 Result.assign(*Kind);
3806 Lex.Lex();
3807 return false;
3808}
3809
3810template <>
3811bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3812 DwarfAttEncodingField &Result) {
3813 if (Lex.getKind() == lltok::APSInt)
3814 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3815
3816 if (Lex.getKind() != lltok::DwarfAttEncoding)
3817 return TokError("expected DWARF type attribute encoding");
3818
3819 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3820 if (!Encoding)
3821 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3822 Lex.getStrVal() + "'");
3823 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3823, __extension__ __PRETTY_FUNCTION__))
;
3824 Result.assign(Encoding);
3825 Lex.Lex();
3826 return false;
3827}
3828
3829/// DIFlagField
3830/// ::= uint32
3831/// ::= DIFlagVector
3832/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3833template <>
3834bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3835
3836 // Parser for a single flag.
3837 auto parseFlag = [&](DINode::DIFlags &Val) {
3838 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
8
Calling 'LLLexer::getKind'
9
Returning from 'LLLexer::getKind'
10
Assuming the condition is true
11
Calling 'LLLexer::getAPSIntVal'
12
Returning from 'LLLexer::getAPSIntVal'
13
Calling 'APSInt::isSigned'
15
Returning from 'APSInt::isSigned'
16
Taking true branch
3839 uint32_t TempVal = static_cast<uint32_t>(Val);
17
Assigned value is garbage or undefined
3840 bool Res = ParseUInt32(TempVal);
3841 Val = static_cast<DINode::DIFlags>(TempVal);
3842 return Res;
3843 }
3844
3845 if (Lex.getKind() != lltok::DIFlag)
3846 return TokError("expected debug info flag");
3847
3848 Val = DINode::getFlag(Lex.getStrVal());
3849 if (!Val)
3850 return TokError(Twine("invalid debug info flag flag '") +
3851 Lex.getStrVal() + "'");
3852 Lex.Lex();
3853 return false;
3854 };
3855
3856 // Parse the flags and combine them together.
3857 DINode::DIFlags Combined = DINode::FlagZero;
3858 do {
3859 DINode::DIFlags Val;
5
'Val' declared without an initial value
3860 if (parseFlag(Val))
6
Passing value via 1st parameter 'Val'
7
Calling 'operator()'
3861 return true;
3862 Combined |= Val;
3863 } while (EatIfPresent(lltok::bar));
3864
3865 Result.assign(Combined);
3866 return false;
3867}
3868
3869template <>
3870bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3871 MDSignedField &Result) {
3872 if (Lex.getKind() != lltok::APSInt)
3873 return TokError("expected signed integer");
3874
3875 auto &S = Lex.getAPSIntVal();
3876 if (S < Result.Min)
3877 return TokError("value for '" + Name + "' too small, limit is " +
3878 Twine(Result.Min));
3879 if (S > Result.Max)
3880 return TokError("value for '" + Name + "' too large, limit is " +
3881 Twine(Result.Max));
3882 Result.assign(S.getExtValue());
3883 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3883, __extension__ __PRETTY_FUNCTION__))
;
3884 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~svn326246/lib/AsmParser/LLParser.cpp"
, 3884, __extension__ __PRETTY_FUNCTION__))
;
3885 Lex.Lex();
3886 return false;
3887}
3888
3889template <>
3890bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3891 switch (Lex.getKind()) {
3892 default:
3893 return TokError("expected 'true' or 'false'");
3894 case lltok::kw_true:
3895 Result.assign(true);
3896 break;
3897 case lltok::kw_false:
3898 Result.assign(false);
3899 break;
3900 }
3901 Lex.Lex();
3902 return false;
3903}
3904
3905template <>
3906bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3907 if (Lex.getKind() == lltok::kw_null) {
3908 if (!Result.AllowNull)
3909 return TokError("'" + Name + "' cannot be null");
3910 Lex.Lex();
3911 Result.assign(nullptr);
3912 return false;
3913 }
3914
3915 Metadata *MD;
3916 if (ParseMetadata(MD, nullptr))
3917 return true;
3918
3919 Result.assign(MD);
3920 return false;
3921}
3922
3923template <>
3924bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3925 MDSignedOrMDField &Result) {
3926 // Try to parse a signed int.
3927 if (Lex.getKind() == lltok::APSInt) {
3928 MDSignedField Res = Result.A;
3929 if (!ParseMDField(Loc, Name, Res)) {
3930 Result.assign(Res);
3931 return false;
3932 }
3933 return true;
3934 }
3935
3936 // Otherwise, try to parse as an MDField.
3937 MDField Res = Result.B;
3938 if (!ParseMDField(Loc, Name, Res)) {
3939 Result.assign(Res);
3940 return false;
3941 }
3942
3943 return true;
3944}
3945
3946template <>
3947bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3948 MDSignedOrUnsignedField &Result) {
3949 if (Lex.getKind() != lltok::APSInt)
3950 return false;
3951
3952 if (Lex.getAPSIntVal().isSigned()) {
3953 MDSignedField Res = Result.A;
3954 if (ParseMDField(Loc, Name, Res))
3955 return true;
3956 Result.assign(Res);
3957 return false;
3958 }
3959
3960 MDUnsignedField Res = Result.B;
3961 if (ParseMDField(Loc, Name, Res))
3962 return true;
3963 Result.assign(Res);
3964 return false;
3965}
3966
3967template <>
3968bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3969 LocTy ValueLoc = Lex.getLoc();
3970 std::string S;
3971 if (ParseStringConstant(S))
3972 return true;
3973
3974 if (!Result.AllowEmpty && S.empty())
3975 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3976
3977 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3978 return false;
3979}
3980
3981template <>
3982bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3983 SmallVector<Metadata *, 4> MDs;
3984 if (ParseMDNodeVector(MDs))
3985 return true;
3986
3987 Result.assign(std::move(MDs));
3988 return false;
3989}
3990
3991template <>
3992bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3993 ChecksumKindField &Result) {
3994 Optional<DIFile::ChecksumKind> CSKind =
3995 DIFile::getChecksumKind(Lex.getStrVal());
3996
3997 if (Lex.getKind() != lltok::ChecksumKind || !CSKind)
3998 return TokError(
3999 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
4000
4001 Result.assign(*CSKind);
4002 Lex.Lex();
4003 return false;
4004}
4005
4006} // end namespace llvm
4007
4008template <class ParserTy>
4009bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
4010 do {
4011 if (Lex.getKind() != lltok::LabelStr)
4012 return TokError("expected field label here");
4013
4014 if (parseField())
4015 return true;
4016 } while (EatIfPresent(lltok::comma));
4017
4018 return false;
4019}
4020
4021template <class ParserTy>
4022bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
4023 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~svn326246/lib/AsmParser/LLParser.cpp"
, 4023, __extension__ __PRETTY_FUNCTION__))
;
4024 Lex.Lex();
4025
4026 if (ParseToken(lltok::lparen, "expected '(' here"))
4027 return true;
4028 if (Lex.getKind() != lltok::rparen)
4029 if (ParseMDFieldsImplBody(parseField))
4030 return true;
4031
4032 ClosingLoc = Lex.getLoc();
4033 return ParseToken(lltok::rparen, "expected ')' here");
4034}
4035
4036template <class FieldTy>
4037bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
4038 if (Result.Seen)
2
Assuming the condition is false
3
Taking false branch
4039 return TokError("field '" + Name + "' cannot be specified more than once");
4040
4041 LocTy Loc = Lex.getLoc();
4042 Lex.Lex();
4043 return ParseMDField(Loc, Name, Result);
4
Calling 'LLParser::ParseMDField'
4044}
4045
4046bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
4047 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~svn326246/lib/AsmParser/LLParser.cpp"
, 4047, __extension__ __PRETTY_FUNCTION__))
;
4048
4049#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
4050 if (Lex.getStrVal() == #CLASS) \
4051 return Parse##CLASS(N, IsDistinct);
4052#include "llvm/IR/Metadata.def"
4053
4054 return TokError("expected metadata type");
4055}
4056
4057#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
4058#define NOP_FIELD(NAME, TYPE, INIT)
4059#define REQUIRE_FIELD(NAME, TYPE, INIT) \
4060 if (!NAME.Seen) \
4061 return Error(ClosingLoc, "missing required field '" #NAME "'");
4062#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
4063 if (Lex.getStrVal() == #NAME) \
4064 return ParseMDField(#NAME, NAME);
4065#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)
\
4066 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
4067 do { \
4068 LocTy ClosingLoc; \
4069 if (ParseMDFieldsImpl([&]() -> bool { \
4070 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
4071 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
4072 }, ClosingLoc)) \
4073 return true; \
4074 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
4075 } while (false)
4076#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
4077 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
4078
4079/// ParseDILocationFields:
4080/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
4081bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
4082#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4083 OPTIONAL(line, LineField, ); \
4084 OPTIONAL(column, ColumnField, ); \
4085 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4086 OPTIONAL(inlinedAt, MDField, );
4087 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)
;
4088#undef VISIT_MD_FIELDS
4089
4090 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))
4091 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))
;
4092 return false;
4093}
4094
4095/// ParseGenericDINode:
4096/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
4097bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
4098#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4099 REQUIRED(tag, DwarfTagField, ); \
4100 OPTIONAL(header, MDStringField, ); \
4101 OPTIONAL(operands, MDFieldList, );
4102 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)
;
4103#undef VISIT_MD_FIELDS
4104
4105 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
4106 (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))
;
4107 return false;
4108}
4109
4110/// ParseDISubrange:
4111/// ::= !DISubrange(count: 30, lowerBound: 2)
4112/// ::= !DISubrange(count: !node, lowerBound: 2)
4113bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
4114#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4115 REQUIRED(count, MDSignedOrMDField, (-1, -1, INT64_MAX(9223372036854775807L), false)); \
4116 OPTIONAL(lowerBound, MDSignedField, );
4117 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)
;
4118#undef VISIT_MD_FIELDS
4119
4120 if (count.isMDSignedField())
4121 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
4122 DISubrange, (Context, count.getMDSignedValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
;
4123 else if (count.isMDField())
4124 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
4125 DISubrange, (Context, count.getMDFieldValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
;
4126 else
4127 return true;
4128
4129 return false;
4130}
4131
4132/// ParseDIEnumerator:
4133/// ::= !DIEnumerator(value: 30, isUnsigned: true, name: "SomeKind")
4134bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
4135#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4136 REQUIRED(name, MDStringField, ); \
4137 REQUIRED(value, MDSignedOrUnsignedField, ); \
4138 OPTIONAL(isUnsigned, MDBoolField, (false));
4139 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)
;
4140#undef VISIT_MD_FIELDS
4141
4142 if (isUnsigned.Val && value.isMDSignedField())
4143 return TokError("unsigned enumerator with negative value");
4144
4145 int64_t Value = value.isMDSignedField()
4146 ? value.getMDSignedValue()
4147 : static_cast<int64_t>(value.getMDUnsignedValue());
4148 Result =
4149 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))
;
4150
4151 return false;
4152}
4153
4154/// ParseDIBasicType:
4155/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
4156bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4157#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4158 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4159 OPTIONAL(name, MDStringField, ); \
4160 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4161 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4162 OPTIONAL(encoding, DwarfAttEncodingField, );
4163 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)
;
4164#undef VISIT_MD_FIELDS
4165
4166 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
))
4167 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
))
;
4168 return false;
4169}
4170
4171/// ParseDIDerivedType:
4172/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4173/// line: 7, scope: !1, baseType: !2, size: 32,
4174/// align: 32, offset: 0, flags: 0, extraData: !3,
4175/// dwarfAddressSpace: 3)
4176bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4177#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4178 REQUIRED(tag, DwarfTagField, ); \
4179 OPTIONAL(name, MDStringField, ); \
4180 OPTIONAL(file, MDField, ); \
4181 OPTIONAL(line, LineField, ); \
4182 OPTIONAL(scope, MDField, ); \
4183 REQUIRED(baseType, MDField, ); \
4184 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4185 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4186 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4187 OPTIONAL(flags, DIFlagField, ); \
4188 OPTIONAL(extraData, MDField, ); \
4189 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
4190 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)
;
4191#undef VISIT_MD_FIELDS
4192
4193 Optional<unsigned> DWARFAddressSpace;
4194 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4195 DWARFAddressSpace = dwarfAddressSpace.Val;
4196
4197 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))
4198 (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))
4199 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))
4200 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))
4201 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))
;
4202 return false;
4203}
4204
4205bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4206#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4207 REQUIRED(tag, DwarfTagField, ); \
4208 OPTIONAL(name, MDStringField, ); \
4209 OPTIONAL(file, MDField, ); \
4210 OPTIONAL(line, LineField, ); \
4211 OPTIONAL(scope, MDField, ); \
4212 OPTIONAL(baseType, MDField, ); \
4213 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4214 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4215 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4216 OPTIONAL(flags, DIFlagField, ); \
4217 OPTIONAL(elements, MDField, ); \
4218 OPTIONAL(runtimeLang, DwarfLangField, ); \
4219 OPTIONAL(vtableHolder, MDField, ); \
4220 OPTIONAL(templateParams, MDField, ); \
4221 OPTIONAL(identifier, MDStringField, ); \
4222 OPTIONAL(discriminator, MDField, );
4223 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)
;
4224#undef VISIT_MD_FIELDS
4225
4226 // If this has an identifier try to build an ODR type.
4227 if (identifier.Val)
4228 if (auto *CT = DICompositeType::buildODRType(
4229 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4230 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4231 elements.Val, runtimeLang.Val, vtableHolder.Val,
4232 templateParams.Val, discriminator.Val)) {
4233 Result = CT;
4234 return false;
4235 }
4236
4237 // Create a new node, and save it in the context if it belongs in the type
4238 // map.
4239 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))
4240 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))
4241 (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))
4242 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))
4243 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))
4244 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))
;
4245 return false;
4246}
4247
4248bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4249#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4250 OPTIONAL(flags, DIFlagField, ); \
4251 OPTIONAL(cc, DwarfCCField, ); \
4252 REQUIRED(types, MDField, );
4253 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)
;
4254#undef VISIT_MD_FIELDS
4255
4256 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4257 (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))
;
4258 return false;
4259}
4260
4261/// ParseDIFileType:
4262/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir",
4263/// checksumkind: CSK_MD5,
4264/// checksum: "000102030405060708090a0b0c0d0e0f",
4265/// source: "source file contents")
4266bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4267 // The default constructed value for checksumkind is required, but will never
4268 // be used, as the parser checks if the field was actually Seen before using
4269 // the Val.
4270#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4271 REQUIRED(filename, MDStringField, ); \
4272 REQUIRED(directory, MDStringField, ); \
4273 OPTIONAL(checksumkind, ChecksumKindField, (DIFile::CSK_MD5)); \
4274 OPTIONAL(checksum, MDStringField, ); \
4275 OPTIONAL(source, MDStringField, );
4276 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)
;
4277#undef VISIT_MD_FIELDS
4278
4279 Optional<DIFile::ChecksumInfo<MDString *>> OptChecksum;
4280 if (checksumkind.Seen && checksum.Seen)
4281 OptChecksum.emplace(checksumkind.Val, checksum.Val);
4282 else if (checksumkind.Seen || checksum.Seen)
4283 return Lex.Error("'checksumkind' and 'checksum' must be provided together");
4284
4285 Optional<MDString *> OptSource;
4286 if (source.Seen)
4287 OptSource = source.Val;
4288 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val,(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
4289 OptChecksum, OptSource))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
;
4290 return false;
4291}
4292
4293/// ParseDICompileUnit:
4294/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4295/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4296/// splitDebugFilename: "abc.debug",
4297/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4298/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4299bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4300 if (!IsDistinct)
4301 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4302
4303#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4304 REQUIRED(language, DwarfLangField, ); \
4305 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4306 OPTIONAL(producer, MDStringField, ); \
4307 OPTIONAL(isOptimized, MDBoolField, ); \
4308 OPTIONAL(flags, MDStringField, ); \
4309 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4310 OPTIONAL(splitDebugFilename, MDStringField, ); \
4311 OPTIONAL(emissionKind, EmissionKindField, ); \
4312 OPTIONAL(enums, MDField, ); \
4313 OPTIONAL(retainedTypes, MDField, ); \
4314 OPTIONAL(globals, MDField, ); \
4315 OPTIONAL(imports, MDField, ); \
4316 OPTIONAL(macros, MDField, ); \
4317 OPTIONAL(dwoId, MDUnsignedField, ); \
4318 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4319 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4320 OPTIONAL(gnuPubnames, MDBoolField, = false);
4321 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)
;
4322#undef VISIT_MD_FIELDS
4323
4324 Result = DICompileUnit::getDistinct(
4325 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4326 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4327 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4328 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4329 return false;
4330}
4331
4332/// ParseDISubprogram:
4333/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4334/// file: !1, line: 7, type: !2, isLocal: false,
4335/// isDefinition: true, scopeLine: 8, containingType: !3,
4336/// virtuality: DW_VIRTUALTIY_pure_virtual,
4337/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4338/// isOptimized: false, templateParams: !4, declaration: !5,
4339/// variables: !6, thrownTypes: !7)
4340bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4341 auto Loc = Lex.getLoc();
4342#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4343 OPTIONAL(scope, MDField, ); \
4344 OPTIONAL(name, MDStringField, ); \
4345 OPTIONAL(linkageName, MDStringField, ); \
4346 OPTIONAL(file, MDField, ); \
4347 OPTIONAL(line, LineField, ); \
4348 OPTIONAL(type, MDField, ); \
4349 OPTIONAL(isLocal, MDBoolField, ); \
4350 OPTIONAL(isDefinition, MDBoolField, (true)); \
4351 OPTIONAL(scopeLine, LineField, ); \
4352 OPTIONAL(containingType, MDField, ); \
4353 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4354 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4355 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4356 OPTIONAL(flags, DIFlagField, ); \
4357 OPTIONAL(isOptimized, MDBoolField, ); \
4358 OPTIONAL(unit, MDField, ); \
4359 OPTIONAL(templateParams, MDField, ); \
4360 OPTIONAL(declaration, MDField, ); \
4361 OPTIONAL(variables, MDField, ); \
4362 OPTIONAL(thrownTypes, MDField, );
4363 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)
;
4364#undef VISIT_MD_FIELDS
4365
4366 if (isDefinition.Val && !IsDistinct)
4367 return Lex.Error(
4368 Loc,
4369 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4370
4371 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))
4372 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))
4373 (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))
4374 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))
4375 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))
4376 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))
4377 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))
;
4378 return false;
4379}
4380
4381/// ParseDILexicalBlock:
4382/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4383bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4384#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4385 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4386 OPTIONAL(file, MDField, ); \
4387 OPTIONAL(line, LineField, ); \
4388 OPTIONAL(column, ColumnField, );
4389 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)
;
4390#undef VISIT_MD_FIELDS
4391
4392 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))
4393 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))
;
4394 return false;
4395}
4396
4397/// ParseDILexicalBlockFile:
4398/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4399bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4400#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4401 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4402 OPTIONAL(file, MDField, ); \
4403 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4404 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)
;
4405#undef VISIT_MD_FIELDS
4406
4407 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4408 (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))
;
4409 return false;
4410}
4411
4412/// ParseDINamespace:
4413/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4414bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4415#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4416 REQUIRED(scope, MDField, ); \
4417 OPTIONAL(name, MDStringField, ); \
4418 OPTIONAL(exportSymbols, MDBoolField, );
4419 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)
;
4420#undef VISIT_MD_FIELDS
4421
4422 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4423 (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))
;
4424 return false;
4425}
4426
4427/// ParseDIMacro:
4428/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4429bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4430#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4431 REQUIRED(type, DwarfMacinfoTypeField, ); \
4432 OPTIONAL(line, LineField, ); \
4433 REQUIRED(name, MDStringField, ); \
4434 OPTIONAL(value, MDStringField, );
4435 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4436#undef VISIT_MD_FIELDS
4437
4438 Result = 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))
4439 (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))
;
4440 return false;
4441}
4442
4443/// ParseDIMacroFile:
4444/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4445bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4446#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4447 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4448 OPTIONAL(line, LineField, ); \
4449 REQUIRED(file, MDField, ); \
4450 OPTIONAL(nodes, MDField, );
4451 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)
;
4452#undef VISIT_MD_FIELDS
4453
4454 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))
4455 (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))
;
4456 return false;
4457}
4458
4459/// ParseDIModule:
4460/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4461/// includePath: "/usr/include", isysroot: "/")
4462bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4463#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4464 REQUIRED(scope, MDField, ); \
4465 REQUIRED(name, MDStringField, ); \
4466 OPTIONAL(configMacros, MDStringField, ); \
4467 OPTIONAL(includePath, MDStringField, ); \
4468 OPTIONAL(isysroot, MDStringField, );
4469 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)
;
4470#undef VISIT_MD_FIELDS
4471
4472 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))
4473 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))
;
4474 return false;
4475}
4476
4477/// ParseDITemplateTypeParameter:
4478/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4479bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4480#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4481 OPTIONAL(name, MDStringField, ); \
4482 REQUIRED(type, MDField, );
4483 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)
;
4484#undef VISIT_MD_FIELDS
4485
4486 Result =
4487 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4488 return false;
4489}
4490
4491/// ParseDITemplateValueParameter:
4492/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4493/// name: "V", type: !1, value: i32 7)
4494bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4495#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4496 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4497 OPTIONAL(name, MDStringField, ); \
4498 OPTIONAL(type, MDField, ); \
4499 REQUIRED(value, MDField, );
4500 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4501#undef VISIT_MD_FIELDS
4502
4503 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))
4504 (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))
;
4505 return false;
4506}
4507
4508/// ParseDIGlobalVariable:
4509/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4510/// file: !1, line: 7, type: !2, isLocal: false,
4511/// isDefinition: true, declaration: !3, align: 8)
4512bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4513#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4514 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4515 OPTIONAL(scope, MDField, ); \
4516 OPTIONAL(linkageName, MDStringField, ); \
4517 OPTIONAL(file, MDField, ); \
4518 OPTIONAL(line, LineField, ); \
4519 OPTIONAL(type, MDField, ); \
4520 OPTIONAL(isLocal, MDBoolField, ); \
4521 OPTIONAL(isDefinition, MDBoolField, (true)); \
4522 OPTIONAL(declaration, MDField, ); \
4523 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4524 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)
;
4525#undef VISIT_MD_FIELDS
4526
4527 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))
4528 (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))
4529 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))
4530 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))
;
4531 return false;
4532}
4533
4534/// ParseDILocalVariable:
4535/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4536/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4537/// align: 8)
4538/// ::= !DILocalVariable(scope: !0, name: "foo",
4539/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4540/// align: 8)
4541bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4542#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4543 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4544 OPTIONAL(name, MDStringField, ); \
4545 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4546 OPTIONAL(file, MDField, ); \
4547 OPTIONAL(line, LineField, ); \
4548 OPTIONAL(type, MDField, ); \
4549 OPTIONAL(flags, DIFlagField, ); \
4550 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4551 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'
4552#undef VISIT_MD_FIELDS
4553
4554 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))
4555 (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))
4556 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))
;
4557 return false;
4558}
4559
4560/// ParseDIExpression:
4561/// ::= !DIExpression(0, 7, -1)
4562bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4563 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~svn326246/lib/AsmParser/LLParser.cpp"
, 4563, __extension__ __PRETTY_FUNCTION__))
;
4564 Lex.Lex();
4565
4566 if (ParseToken(lltok::lparen, "expected '(' here"))
4567 return true;
4568
4569 SmallVector<uint64_t, 8> Elements;
4570 if (Lex.getKind() != lltok::rparen)
4571 do {
4572 if (Lex.getKind() == lltok::DwarfOp) {
4573 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4574 Lex.Lex();
4575 Elements.push_back(Op);
4576 continue;
4577 }
4578 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4579 }
4580
4581 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4582 return TokError("expected unsigned integer");
4583
4584 auto &U = Lex.getAPSIntVal();
4585 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4586 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4587 Elements.push_back(U.getZExtValue());
4588 Lex.Lex();
4589 } while (EatIfPresent(lltok::comma));
4590
4591 if (ParseToken(lltok::rparen, "expected ')' here"))
4592 return true;
4593
4594 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4595 return false;
4596}
4597
4598/// ParseDIGlobalVariableExpression:
4599/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4600bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4601 bool IsDistinct) {
4602#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4603 REQUIRED(var, MDField, ); \
4604 REQUIRED(expr, MDField, );
4605 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)
;
4606#undef VISIT_MD_FIELDS
4607
4608 Result =
4609 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4610 return false;
4611}
4612
4613/// ParseDIObjCProperty:
4614/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4615/// getter: "getFoo", attributes: 7, type: !2)
4616bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4617#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4618 OPTIONAL(name, MDStringField, ); \
4619 OPTIONAL(file, MDField, ); \
4620 OPTIONAL(line, LineField, ); \
4621 OPTIONAL(setter, MDStringField, ); \
4622 OPTIONAL(getter, MDStringField, ); \
4623 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4624 OPTIONAL(type, MDField, );
4625 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)
;
4626#undef VISIT_MD_FIELDS
4627
4628 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))
4629 (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))
4630 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))
;
4631 return false;
4632}
4633
4634/// ParseDIImportedEntity:
4635/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4636/// line: 7, name: "foo")
4637bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4638#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4639 REQUIRED(tag, DwarfTagField, ); \
4640 REQUIRED(scope, MDField, ); \
4641 OPTIONAL(entity, MDField, ); \
4642 OPTIONAL(file, MDField, ); \
4643 OPTIONAL(line, LineField, ); \
4644 OPTIONAL(name, MDStringField, );
4645 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)
;
4646#undef VISIT_MD_FIELDS
4647
4648 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))
4649 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))
4650 (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))
;
4651 return false;
4652}
4653
4654#undef PARSE_MD_FIELD
4655#undef NOP_FIELD
4656#undef REQUIRE_FIELD
4657#undef DECLARE_FIELD
4658
4659/// ParseMetadataAsValue
4660/// ::= metadata i32 %local
4661/// ::= metadata i32 @global
4662/// ::= metadata i32 7
4663/// ::= metadata !0
4664/// ::= metadata !{...}
4665/// ::= metadata !"string"
4666bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4667 // Note: the type 'metadata' has already been parsed.
4668 Metadata *MD;
4669 if (ParseMetadata(MD, &PFS))
4670 return true;
4671
4672 V = MetadataAsValue::get(Context, MD);
4673 return false;
4674}
4675
4676/// ParseValueAsMetadata
4677/// ::= i32 %local
4678/// ::= i32 @global
4679/// ::= i32 7
4680bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4681 PerFunctionState *PFS) {
4682 Type *Ty;
4683 LocTy Loc;
4684 if (ParseType(Ty, TypeMsg, Loc))
4685 return true;
4686 if (Ty->isMetadataTy())
4687 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4688
4689 Value *V;
4690 if (ParseValue(Ty, V, PFS))
4691 return true;
4692
4693 MD = ValueAsMetadata::get(V);
4694 return false;
4695}
4696
4697/// ParseMetadata
4698/// ::= i32 %local
4699/// ::= i32 @global
4700/// ::= i32 7
4701/// ::= !42
4702/// ::= !{...}
4703/// ::= !"string"
4704/// ::= !DILocation(...)
4705bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4706 if (Lex.getKind() == lltok::MetadataVar) {
4707 MDNode *N;
4708 if (ParseSpecializedMDNode(N))
4709 return true;
4710 MD = N;
4711 return false;
4712 }
4713
4714 // ValueAsMetadata:
4715 // <type> <value>
4716 if (Lex.getKind() != lltok::exclaim)
4717 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4718
4719 // '!'.
4720 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~svn326246/lib/AsmParser/LLParser.cpp"
, 4720, __extension__ __PRETTY_FUNCTION__))
;
4721 Lex.Lex();
4722
4723 // MDString:
4724 // ::= '!' STRINGCONSTANT
4725 if (Lex.getKind() == lltok::StringConstant) {
4726 MDString *S;
4727 if (ParseMDString(S))
4728 return true;
4729 MD = S;
4730 return false;
4731 }
4732
4733 // MDNode:
4734 // !{ ... }
4735 // !7
4736 MDNode *N;
4737 if (ParseMDNodeTail(N))
4738 return true;
4739 MD = N;
4740 return false;
4741}
4742
4743//===----------------------------------------------------------------------===//
4744// Function Parsing.
4745//===----------------------------------------------------------------------===//
4746
4747bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4748 PerFunctionState *PFS, bool IsCall) {
4749 if (Ty->isFunctionTy())
4750 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4751
4752 switch (ID.Kind) {
4753 case ValID::t_LocalID:
4754 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4755 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, IsCall);
4756 return V == nullptr;
4757 case ValID::t_LocalName:
4758 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4759 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, IsCall);
4760 return V == nullptr;
4761 case ValID::t_InlineAsm: {
4762 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4763 return Error(ID.Loc, "invalid type for inline asm constraint string");
4764 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4765 (ID.UIntVal >> 1) & 1,
4766 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4767 return false;
4768 }
4769 case ValID::t_GlobalName:
4770 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4771 return V == nullptr;
4772 case ValID::t_GlobalID:
4773 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4774 return V == nullptr;
4775 case ValID::t_APSInt:
4776 if (!Ty->isIntegerTy())
4777 return Error(ID.Loc, "integer constant must have integer type");
4778 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4779 V = ConstantInt::get(Context, ID.APSIntVal);
4780 return false;
4781 case ValID::t_APFloat:
4782 if (!Ty->isFloatingPointTy() ||
4783 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4784 return Error(ID.Loc, "floating point constant invalid for type");
4785
4786 // The lexer has no type info, so builds all half, float, and double FP
4787 // constants as double. Fix this here. Long double does not need this.
4788 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4789 bool Ignored;
4790 if (Ty->isHalfTy())
4791 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4792 &Ignored);
4793 else if (Ty->isFloatTy())
4794 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4795 &Ignored);
4796 }
4797 V = ConstantFP::get(Context, ID.APFloatVal);
4798
4799 if (V->getType() != Ty)
4800 return Error(ID.Loc, "floating point constant does not have type '" +
4801 getTypeString(Ty) + "'");
4802
4803 return false;
4804 case ValID::t_Null:
4805 if (!Ty->isPointerTy())
4806 return Error(ID.Loc, "null must be a pointer type");
4807 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4808 return false;
4809 case ValID::t_Undef:
4810 // FIXME: LabelTy should not be a first-class type.
4811 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4812 return Error(ID.Loc, "invalid type for undef constant");
4813 V = UndefValue::get(Ty);
4814 return false;
4815 case ValID::t_EmptyArray:
4816 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4817 return Error(ID.Loc, "invalid empty array initializer");
4818 V = UndefValue::get(Ty);
4819 return false;
4820 case ValID::t_Zero:
4821 // FIXME: LabelTy should not be a first-class type.
4822 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4823 return Error(ID.Loc, "invalid type for null constant");
4824 V = Constant::getNullValue(Ty);
4825 return false;
4826 case ValID::t_None:
4827 if (!Ty->isTokenTy())
4828 return Error(ID.Loc, "invalid type for none constant");
4829 V = Constant::getNullValue(Ty);
4830 return false;
4831 case ValID::t_Constant:
4832 if (ID.ConstantVal->getType() != Ty)
4833 return Error(ID.Loc, "constant expression type mismatch");
4834
4835 V = ID.ConstantVal;
4836 return false;
4837 case ValID::t_ConstantStruct:
4838 case ValID::t_PackedConstantStruct:
4839 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4840 if (ST->getNumElements() != ID.UIntVal)
4841 return Error(ID.Loc,
4842 "initializer with struct type has wrong # elements");
4843 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4844 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4845
4846 // Verify that the elements are compatible with the structtype.
4847 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4848 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4849 return Error(ID.Loc, "element " + Twine(i) +
4850 " of struct initializer doesn't match struct element type");
4851
4852 V = ConstantStruct::get(
4853 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4854 } else
4855 return Error(ID.Loc, "constant expression type mismatch");
4856 return false;
4857 }
4858 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-7~svn326246/lib/AsmParser/LLParser.cpp"
, 4858)
;
4859}
4860
4861bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4862 C = nullptr;
4863 ValID ID;
4864 auto Loc = Lex.getLoc();
4865 if (ParseValID(ID, /*PFS=*/nullptr))
4866 return true;
4867 switch (ID.Kind) {
4868 case ValID::t_APSInt:
4869 case ValID::t_APFloat:
4870 case ValID::t_Undef:
4871 case ValID::t_Constant:
4872 case ValID::t_ConstantStruct:
4873 case ValID::t_PackedConstantStruct: {
4874 Value *V;
4875 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr, /*IsCall=*/false))
4876 return true;
4877 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~svn326246/lib/AsmParser/LLParser.cpp"
, 4877, __extension__ __PRETTY_FUNCTION__))
;
4878 C = cast<Constant>(V);
4879 return false;
4880 }
4881 case ValID::t_Null:
4882 C = Constant::getNullValue(Ty);
4883 return false;
4884 default:
4885 return Error(Loc, "expected a constant value");
4886 }
4887}
4888
4889bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4890 V = nullptr;
4891 ValID ID;
4892 return ParseValID(ID, PFS) ||
4893 ConvertValIDToValue(Ty, ID, V, PFS, /*IsCall=*/false);
4894}
4895
4896bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4897 Type *Ty = nullptr;
4898 return ParseType(Ty) ||
4899 ParseValue(Ty, V, PFS);
4900}
4901
4902bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4903 PerFunctionState &PFS) {
4904 Value *V;
4905 Loc = Lex.getLoc();
4906 if (ParseTypeAndValue(V, PFS)) return true;
4907 if (!isa<BasicBlock>(V))
4908 return Error(Loc, "expected a basic block");
4909 BB = cast<BasicBlock>(V);
4910 return false;
4911}
4912
4913/// FunctionHeader
4914/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
4915/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
4916/// '(' ArgList ')' OptFuncAttrs OptSection OptionalAlign OptGC
4917/// OptionalPrefix OptionalPrologue OptPersonalityFn
4918bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4919 // Parse the linkage.
4920 LocTy LinkageLoc = Lex.getLoc();
4921 unsigned Linkage;
4922 unsigned Visibility;
4923 unsigned DLLStorageClass;
4924 bool DSOLocal;
4925 AttrBuilder RetAttrs;
4926 unsigned CC;
4927 bool HasLinkage;
4928 Type *RetType = nullptr;
4929 LocTy RetTypeLoc = Lex.getLoc();
4930 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
4931 DSOLocal) ||
4932 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4933 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4934 return true;
4935
4936 // Verify that the linkage is ok.
4937 switch ((GlobalValue::LinkageTypes)Linkage) {
4938 case GlobalValue::ExternalLinkage:
4939 break; // always ok.
4940 case GlobalValue::ExternalWeakLinkage:
4941 if (isDefine)
4942 return Error(LinkageLoc, "invalid linkage for function definition");
4943 break;
4944 case GlobalValue::PrivateLinkage:
4945 case GlobalValue::InternalLinkage:
4946 case GlobalValue::AvailableExternallyLinkage:
4947 case GlobalValue::LinkOnceAnyLinkage:
4948 case GlobalValue::LinkOnceODRLinkage:
4949 case GlobalValue::WeakAnyLinkage:
4950 case GlobalValue::WeakODRLinkage:
4951 if (!isDefine)
4952 return Error(LinkageLoc, "invalid linkage for function declaration");
4953 break;
4954 case GlobalValue::AppendingLinkage:
4955 case GlobalValue::CommonLinkage:
4956 return Error(LinkageLoc, "invalid function linkage type");
4957 }
4958
4959 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4960 return Error(LinkageLoc,
4961 "symbol with local linkage must have default visibility");
4962
4963 if (!FunctionType::isValidReturnType(RetType))
4964 return Error(RetTypeLoc, "invalid function return type");
4965
4966 LocTy NameLoc = Lex.getLoc();
4967
4968 std::string FunctionName;
4969 if (Lex.getKind() == lltok::GlobalVar) {
4970 FunctionName = Lex.getStrVal();
4971 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4972 unsigned NameID = Lex.getUIntVal();
4973
4974 if (NameID != NumberedVals.size())
4975 return TokError("function expected to be numbered '%" +
4976 Twine(NumberedVals.size()) + "'");
4977 } else {
4978 return TokError("expected function name");
4979 }
4980
4981 Lex.Lex();
4982
4983 if (Lex.getKind() != lltok::lparen)
4984 return TokError("expected '(' in function argument list");
4985
4986 SmallVector<ArgInfo, 8> ArgList;
4987 bool isVarArg;
4988 AttrBuilder FuncAttrs;
4989 std::vector<unsigned> FwdRefAttrGrps;
4990 LocTy BuiltinLoc;
4991 std::string Section;
4992 unsigned Alignment;
4993 std::string GC;
4994 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4995 Constant *Prefix = nullptr;
4996 Constant *Prologue = nullptr;
4997 Constant *PersonalityFn = nullptr;
4998 Comdat *C;
4999
5000 if (ParseArgumentList(ArgList, isVarArg) ||
5001 ParseOptionalUnnamedAddr(UnnamedAddr) ||
5002 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
5003 BuiltinLoc) ||
5004 (EatIfPresent(lltok::kw_section) &&
5005 ParseStringConstant(Section)) ||
5006 parseOptionalComdat(FunctionName, C) ||
5007 ParseOptionalAlignment(Alignment) ||
5008 (EatIfPresent(lltok::kw_gc) &&
5009 ParseStringConstant(GC)) ||
5010 (EatIfPresent(lltok::kw_prefix) &&
5011 ParseGlobalTypeAndValue(Prefix)) ||
5012 (EatIfPresent(lltok::kw_prologue) &&
5013 ParseGlobalTypeAndValue(Prologue)) ||
5014 (EatIfPresent(lltok::kw_personality) &&
5015 ParseGlobalTypeAndValue(PersonalityFn)))
5016 return true;
5017
5018 if (FuncAttrs.contains(Attribute::Builtin))
5019 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
5020
5021 // If the alignment was parsed as an attribute, move to the alignment field.
5022 if (FuncAttrs.hasAlignmentAttr()) {
5023 Alignment = FuncAttrs.getAlignment();
5024 FuncAttrs.removeAttribute(Attribute::Alignment);
5025 }
5026
5027 // Okay, if we got here, the function is syntactically valid. Convert types
5028 // and do semantic checks.
5029 std::vector<Type*> ParamTypeList;
5030 SmallVector<AttributeSet, 8> Attrs;
5031
5032 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5033 ParamTypeList.push_back(ArgList[i].Ty);
5034 Attrs.push_back(ArgList[i].Attrs);
5035 }
5036
5037 AttributeList PAL =
5038 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
5039 AttributeSet::get(Context, RetAttrs), Attrs);
5040
5041 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
5042 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
5043
5044 FunctionType *FT =
5045 FunctionType::get(RetType, ParamTypeList, isVarArg);
5046 PointerType *PFT = PointerType::getUnqual(FT);
5047
5048 Fn = nullptr;
5049 if (!FunctionName.empty()) {
5050 // If this was a definition of a forward reference, remove the definition
5051 // from the forward reference table and fill in the forward ref.
5052 auto FRVI = ForwardRefVals.find(FunctionName);
5053 if (FRVI != ForwardRefVals.end()) {
5054 Fn = M->getFunction(FunctionName);
5055 if (!Fn)
5056 return Error(FRVI->second.second, "invalid forward reference to "
5057 "function as global value!");
5058 if (Fn->getType() != PFT)
5059 return Error(FRVI->second.second, "invalid forward reference to "
5060 "function '" + FunctionName + "' with wrong type!");
5061
5062 ForwardRefVals.erase(FRVI);
5063 } else if ((Fn = M->getFunction(FunctionName))) {
5064 // Reject redefinitions.
5065 return Error(NameLoc, "invalid redefinition of function '" +
5066 FunctionName + "'");
5067 } else if (M->getNamedValue(FunctionName)) {
5068 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
5069 }
5070
5071 } else {
5072 // If this is a definition of a forward referenced function, make sure the
5073 // types agree.
5074 auto I = ForwardRefValIDs.find(NumberedVals.size());
5075 if (I != ForwardRefValIDs.end()) {
5076 Fn = cast<Function>(I->second.first);
5077 if (Fn->getType() != PFT)
5078 return Error(NameLoc, "type of definition and forward reference of '@" +
5079 Twine(NumberedVals.size()) + "' disagree");
5080 ForwardRefValIDs.erase(I);
5081 }
5082 }
5083
5084 if (!Fn)
5085 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
5086 else // Move the forward-reference to the correct spot in the module.
5087 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
5088
5089 if (FunctionName.empty())
5090 NumberedVals.push_back(Fn);
5091
5092 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
5093 maybeSetDSOLocal(DSOLocal, *Fn);
5094 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
5095 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
5096 Fn->setCallingConv(CC);
5097 Fn->setAttributes(PAL);
5098 Fn->setUnnamedAddr(UnnamedAddr);
5099 Fn->setAlignment(Alignment);
5100 Fn->setSection(Section);
5101 Fn->setComdat(C);
5102 Fn->setPersonalityFn(PersonalityFn);
5103 if (!GC.empty()) Fn->setGC(GC);
5104 Fn->setPrefixData(Prefix);
5105 Fn->setPrologueData(Prologue);
5106 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
5107
5108 // Add all of the arguments we parsed to the function.
5109 Function::arg_iterator ArgIt = Fn->arg_begin();
5110 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
5111 // If the argument has a name, insert it into the argument symbol table.
5112 if (ArgList[i].Name.empty()) continue;
5113
5114 // Set the name, if it conflicted, it will be auto-renamed.
5115 ArgIt->setName(ArgList[i].Name);
5116
5117 if (ArgIt->getName() != ArgList[i].Name)
5118 return Error(ArgList[i].Loc, "redefinition of argument '%" +
5119 ArgList[i].Name + "'");
5120 }
5121
5122 if (isDefine)
5123 return false;
5124
5125 // Check the declaration has no block address forward references.
5126 ValID ID;
5127 if (FunctionName.empty()) {
5128 ID.Kind = ValID::t_GlobalID;
5129 ID.UIntVal = NumberedVals.size() - 1;
5130 } else {
5131 ID.Kind = ValID::t_GlobalName;
5132 ID.StrVal = FunctionName;
5133 }
5134 auto Blocks = ForwardRefBlockAddresses.find(ID);
5135 if (Blocks != ForwardRefBlockAddresses.end())
5136 return Error(Blocks->first.Loc,
5137 "cannot take blockaddress inside a declaration");
5138 return false;
5139}
5140
5141bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
5142 ValID ID;
5143 if (FunctionNumber == -1) {
5144 ID.Kind = ValID::t_GlobalName;
5145 ID.StrVal = F.getName();
5146 } else {
5147 ID.Kind = ValID::t_GlobalID;
5148 ID.UIntVal = FunctionNumber;
5149 }
5150
5151 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
5152 if (Blocks == P.ForwardRefBlockAddresses.end())
5153 return false;
5154
5155 for (const auto &I : Blocks->second) {
5156 const ValID &BBID = I.first;
5157 GlobalValue *GV = I.second;
5158
5159 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~svn326246/lib/AsmParser/LLParser.cpp"
, 5160, __extension__ __PRETTY_FUNCTION__))
5160 "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~svn326246/lib/AsmParser/LLParser.cpp"
, 5160, __extension__ __PRETTY_FUNCTION__))
;
5161 BasicBlock *BB;
5162 if (BBID.Kind == ValID::t_LocalName)
5163 BB = GetBB(BBID.StrVal, BBID.Loc);
5164 else
5165 BB = GetBB(BBID.UIntVal, BBID.Loc);
5166 if (!BB)
5167 return P.Error(BBID.Loc, "referenced value is not a basic block");
5168
5169 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
5170 GV->eraseFromParent();
5171 }
5172
5173 P.ForwardRefBlockAddresses.erase(Blocks);
5174 return false;
5175}
5176
5177/// ParseFunctionBody
5178/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5179bool LLParser::ParseFunctionBody(Function &Fn) {
5180 if (Lex.getKind() != lltok::lbrace)
5181 return TokError("expected '{' in function body");
5182 Lex.Lex(); // eat the {.
5183
5184 int FunctionNumber = -1;
5185 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5186
5187 PerFunctionState PFS(*this, Fn, FunctionNumber);
5188
5189 // Resolve block addresses and allow basic blocks to be forward-declared
5190 // within this function.
5191 if (PFS.resolveForwardRefBlockAddresses())
5192 return true;
5193 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5194
5195 // We need at least one basic block.
5196 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5197 return TokError("function body requires at least one basic block");
5198
5199 while (Lex.getKind() != lltok::rbrace &&
5200 Lex.getKind() != lltok::kw_uselistorder)
5201 if (ParseBasicBlock(PFS)) return true;
5202
5203 while (Lex.getKind() != lltok::rbrace)
5204 if (ParseUseListOrder(&PFS))
5205 return true;
5206
5207 // Eat the }.
5208 Lex.Lex();
5209
5210 // Verify function is ok.
5211 return PFS.FinishFunction();
5212}
5213
5214/// ParseBasicBlock
5215/// ::= LabelStr? Instruction*
5216bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5217 // If this basic block starts out with a name, remember it.
5218 std::string Name;
5219 LocTy NameLoc = Lex.getLoc();
5220 if (Lex.getKind() == lltok::LabelStr) {
5221 Name = Lex.getStrVal();
5222 Lex.Lex();
5223 }
5224
5225 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5226 if (!BB)
5227 return Error(NameLoc,
5228 "unable to create block named '" + Name + "'");
5229
5230 std::string NameStr;
5231
5232 // Parse the instructions in this block until we get a terminator.
5233 Instruction *Inst;
5234 do {
5235 // This instruction may have three possibilities for a name: a) none
5236 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5237 LocTy NameLoc = Lex.getLoc();
5238 int NameID = -1;
5239 NameStr = "";
5240
5241 if (Lex.getKind() == lltok::LocalVarID) {
5242 NameID = Lex.getUIntVal();
5243 Lex.Lex();
5244 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5245 return true;
5246 } else if (Lex.getKind() == lltok::LocalVar) {
5247 NameStr = Lex.getStrVal();
5248 Lex.Lex();
5249 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5250 return true;
5251 }
5252
5253 switch (ParseInstruction(Inst, BB, PFS)) {
5254 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-7~svn326246/lib/AsmParser/LLParser.cpp"
, 5254)
;
5255 case InstError: return true;
5256 case InstNormal:
5257 BB->getInstList().push_back(Inst);
5258
5259 // With a normal result, we check to see if the instruction is followed by
5260 // a comma and metadata.
5261 if (EatIfPresent(lltok::comma))
5262 if (ParseInstructionMetadata(*Inst))
5263 return true;
5264 break;
5265 case InstExtraComma:
5266 BB->getInstList().push_back(Inst);
5267
5268 // If the instruction parser ate an extra comma at the end of it, it
5269 // *must* be followed by metadata.
5270 if (ParseInstructionMetadata(*Inst))
5271 return true;
5272 break;
5273 }
5274
5275 // Set the name on the instruction.
5276 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5277 } while (!isa<TerminatorInst>(Inst));
5278
5279 return false;
5280}
5281
5282//===----------------------------------------------------------------------===//
5283// Instruction Parsing.
5284//===----------------------------------------------------------------------===//
5285
5286/// ParseInstruction - Parse one of the many different instructions.
5287///
5288int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5289 PerFunctionState &PFS) {
5290 lltok::Kind Token = Lex.getKind();
5291 if (Token == lltok::Eof)
5292 return TokError("found end of file when expecting more instructions");
5293 LocTy Loc = Lex.getLoc();
5294 unsigned KeywordVal = Lex.getUIntVal();
5295 Lex.Lex(); // Eat the keyword.
5296
5297 switch (Token) {
5298 default: return Error(Loc, "expected instruction opcode");
5299 // Terminator Instructions.
5300 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5301 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5302 case lltok::kw_br: return ParseBr(Inst, PFS);
5303 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5304 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5305 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5306 case lltok::kw_resume: return ParseResume(Inst, PFS);
5307 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5308 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5309 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5310 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5311 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5312 // Binary Operators.
5313 case lltok::kw_add:
5314 case lltok::kw_sub:
5315 case lltok::kw_mul:
5316 case lltok::kw_shl: {
5317 bool NUW = EatIfPresent(lltok::kw_nuw);
5318 bool NSW = EatIfPresent(lltok::kw_nsw);
5319 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5320
5321 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5322
5323 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5324 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5325 return false;
5326 }
5327 case lltok::kw_fadd:
5328 case lltok::kw_fsub:
5329 case lltok::kw_fmul:
5330 case lltok::kw_fdiv:
5331 case lltok::kw_frem: {
5332 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5333 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5334 if (Res != 0)
5335 return Res;
5336 if (FMF.any())
5337 Inst->setFastMathFlags(FMF);
5338 return 0;
5339 }
5340
5341 case lltok::kw_sdiv:
5342 case lltok::kw_udiv:
5343 case lltok::kw_lshr:
5344 case lltok::kw_ashr: {
5345 bool Exact = EatIfPresent(lltok::kw_exact);
5346
5347 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5348 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5349 return false;
5350 }
5351
5352 case lltok::kw_urem:
5353 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5354 case lltok::kw_and:
5355 case lltok::kw_or:
5356 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5357 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5358 case lltok::kw_fcmp: {
5359 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5360 int Res = ParseCompare(Inst, PFS, KeywordVal);
5361 if (Res != 0)
5362 return Res;
5363 if (FMF.any())
5364 Inst->setFastMathFlags(FMF);
5365 return 0;
5366 }
5367
5368 // Casts.
5369 case lltok::kw_trunc:
5370 case lltok::kw_zext:
5371 case lltok::kw_sext:
5372 case lltok::kw_fptrunc:
5373 case lltok::kw_fpext:
5374 case lltok::kw_bitcast:
5375 case lltok::kw_addrspacecast:
5376 case lltok::kw_uitofp:
5377 case lltok::kw_sitofp:
5378 case lltok::kw_fptoui:
5379 case lltok::kw_fptosi:
5380 case lltok::kw_inttoptr:
5381 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5382 // Other.
5383 case lltok::kw_select: return ParseSelect(Inst, PFS);
5384 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5385 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5386 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5387 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5388 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5389 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5390 // Call.
5391 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5392 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5393 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5394 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5395 // Memory.
5396 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5397 case lltok::kw_load: return ParseLoad(Inst, PFS);
5398 case lltok::kw_store: return ParseStore(Inst, PFS);
5399 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5400 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5401 case lltok::kw_fence: return ParseFence(Inst, PFS);
5402 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5403 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5404 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5405 }
5406}
5407
5408/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5409bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5410 if (Opc == Instruction::FCmp) {
5411 switch (Lex.getKind()) {
5412 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5413 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5414 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5415 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5416 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5417 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5418 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5419 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5420 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5421 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5422 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5423 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5424 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5425 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5426 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5427 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5428 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5429 }
5430 } else {
5431 switch (Lex.getKind()) {
5432 default: return TokError("expected icmp predicate (e.g. 'eq')");
5433 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5434 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5435 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5436 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5437 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5438 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5439 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5440 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5441 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5442 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5443 }
5444 }
5445 Lex.Lex();
5446 return false;
5447}
5448
5449//===----------------------------------------------------------------------===//
5450// Terminator Instructions.
5451//===----------------------------------------------------------------------===//
5452
5453/// ParseRet - Parse a return instruction.
5454/// ::= 'ret' void (',' !dbg, !1)*
5455/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5456bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5457 PerFunctionState &PFS) {
5458 SMLoc TypeLoc = Lex.getLoc();
5459 Type *Ty = nullptr;
5460 if (ParseType(Ty, true /*void allowed*/)) return true;
5461
5462 Type *ResType = PFS.getFunction().getReturnType();
5463
5464 if (Ty->isVoidTy()) {
5465 if (!ResType->isVoidTy())
5466 return Error(TypeLoc, "value doesn't match function result type '" +
5467 getTypeString(ResType) + "'");
5468
5469 Inst = ReturnInst::Create(Context);
5470 return false;
5471 }
5472
5473 Value *RV;
5474 if (ParseValue(Ty, RV, PFS)) return true;
5475
5476 if (ResType != RV->getType())
5477 return Error(TypeLoc, "value doesn't match function result type '" +
5478 getTypeString(ResType) + "'");
5479
5480 Inst = ReturnInst::Create(Context, RV);
5481 return false;
5482}
5483
5484/// ParseBr
5485/// ::= 'br' TypeAndValue
5486/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5487bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5488 LocTy Loc, Loc2;
5489 Value *Op0;
5490 BasicBlock *Op1, *Op2;
5491 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5492
5493 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5494 Inst = BranchInst::Create(BB);
5495 return false;
5496 }
5497
5498 if (Op0->getType() != Type::getInt1Ty(Context))
5499 return Error(Loc, "branch condition must have 'i1' type");
5500
5501 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5502 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5503 ParseToken(lltok::comma, "expected ',' after true destination") ||
5504 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5505 return true;
5506
5507 Inst = BranchInst::Create(Op1, Op2, Op0);
5508 return false;
5509}
5510
5511/// ParseSwitch
5512/// Instruction
5513/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5514/// JumpTable
5515/// ::= (TypeAndValue ',' TypeAndValue)*
5516bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5517 LocTy CondLoc, BBLoc;
5518 Value *Cond;
5519 BasicBlock *DefaultBB;
5520 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5521 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5522 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5523 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5524 return true;
5525
5526 if (!Cond->getType()->isIntegerTy())
5527 return Error(CondLoc, "switch condition must have integer type");
5528
5529 // Parse the jump table pairs.
5530 SmallPtrSet<Value*, 32> SeenCases;
5531 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5532 while (Lex.getKind() != lltok::rsquare) {
5533 Value *Constant;
5534 BasicBlock *DestBB;
5535
5536 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5537 ParseToken(lltok::comma, "expected ',' after case value") ||
5538 ParseTypeAndBasicBlock(DestBB, PFS))
5539 return true;
5540
5541 if (!SeenCases.insert(Constant).second)
5542 return Error(CondLoc, "duplicate case value in switch");
5543 if (!isa<ConstantInt>(Constant))
5544 return Error(CondLoc, "case value is not a constant integer");
5545
5546 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5547 }
5548
5549 Lex.Lex(); // Eat the ']'.
5550
5551 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5552 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5553 SI->addCase(Table[i].first, Table[i].second);
5554 Inst = SI;
5555 return false;
5556}
5557
5558/// ParseIndirectBr
5559/// Instruction
5560/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5561bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5562 LocTy AddrLoc;
5563 Value *Address;
5564 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5565 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5566 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5567 return true;
5568
5569 if (!Address->getType()->isPointerTy())
5570 return Error(AddrLoc, "indirectbr address must have pointer type");
5571
5572 // Parse the destination list.
5573 SmallVector<BasicBlock*, 16> DestList;
5574
5575 if (Lex.getKind() != lltok::rsquare) {
5576 BasicBlock *DestBB;
5577 if (ParseTypeAndBasicBlock(DestBB, PFS))
5578 return true;
5579 DestList.push_back(DestBB);
5580
5581 while (EatIfPresent(lltok::comma)) {
5582 if (ParseTypeAndBasicBlock(DestBB, PFS))
5583 return true;
5584 DestList.push_back(DestBB);
5585 }
5586 }
5587
5588 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5589 return true;
5590
5591 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5592 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5593 IBI->addDestination(DestList[i]);
5594 Inst = IBI;
5595 return false;
5596}
5597
5598/// ParseInvoke
5599/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5600/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5601bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5602 LocTy CallLoc = Lex.getLoc();
5603 AttrBuilder RetAttrs, FnAttrs;
5604 std::vector<unsigned> FwdRefAttrGrps;
5605 LocTy NoBuiltinLoc;
5606 unsigned CC;
5607 Type *RetType = nullptr;
5608 LocTy RetTypeLoc;
5609 ValID CalleeID;
5610 SmallVector<ParamInfo, 16> ArgList;
5611 SmallVector<OperandBundleDef, 2> BundleList;
5612
5613 BasicBlock *NormalBB, *UnwindBB;
5614 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5615 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5616 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5617 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5618 NoBuiltinLoc) ||
5619 ParseOptionalOperandBundles(BundleList, PFS) ||
5620 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5621 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5622 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5623 ParseTypeAndBasicBlock(UnwindBB, PFS))
5624 return true;
5625
5626 // If RetType is a non-function pointer type, then this is the short syntax
5627 // for the call, which means that RetType is just the return type. Infer the
5628 // rest of the function argument types from the arguments that are present.
5629 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5630 if (!Ty) {
5631 // Pull out the types of all of the arguments...
5632 std::vector<Type*> ParamTypes;
5633 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5634 ParamTypes.push_back(ArgList[i].V->getType());
5635
5636 if (!FunctionType::isValidReturnType(RetType))
5637 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5638
5639 Ty = FunctionType::get(RetType, ParamTypes, false);
5640 }
5641
5642 CalleeID.FTy = Ty;
5643
5644 // Look up the callee.
5645 Value *Callee;
5646 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS,
5647 /*IsCall=*/true))
5648 return true;
5649
5650 // Set up the Attribute for the function.
5651 SmallVector<Value *, 8> Args;
5652 SmallVector<AttributeSet, 8> ArgAttrs;
5653
5654 // Loop through FunctionType's arguments and ensure they are specified
5655 // correctly. Also, gather any parameter attributes.
5656 FunctionType::param_iterator I = Ty->param_begin();
5657 FunctionType::param_iterator E = Ty->param_end();
5658 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5659 Type *ExpectedTy = nullptr;
5660 if (I != E) {
5661 ExpectedTy = *I++;
5662 } else if (!Ty->isVarArg()) {
5663 return Error(ArgList[i].Loc, "too many arguments specified");
5664 }
5665
5666 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5667 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5668 getTypeString(ExpectedTy) + "'");
5669 Args.push_back(ArgList[i].V);
5670 ArgAttrs.push_back(ArgList[i].Attrs);
5671 }
5672
5673 if (I != E)
5674 return Error(CallLoc, "not enough parameters specified for call");
5675
5676 if (FnAttrs.hasAlignmentAttr())
5677 return Error(CallLoc, "invoke instructions may not have an alignment");
5678
5679 // Finish off the Attribute and check them
5680 AttributeList PAL =
5681 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5682 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5683
5684 InvokeInst *II =
5685 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5686 II->setCallingConv(CC);
5687 II->setAttributes(PAL);
5688 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5689 Inst = II;
5690 return false;
5691}
5692
5693/// ParseResume
5694/// ::= 'resume' TypeAndValue
5695bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5696 Value *Exn; LocTy ExnLoc;
5697 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5698 return true;
5699
5700 ResumeInst *RI = ResumeInst::Create(Exn);
5701 Inst = RI;
5702 return false;
5703}
5704
5705bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5706 PerFunctionState &PFS) {
5707 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5708 return true;
5709
5710 while (Lex.getKind() != lltok::rsquare) {
5711 // If this isn't the first argument, we need a comma.
5712 if (!Args.empty() &&
5713 ParseToken(lltok::comma, "expected ',' in argument list"))
5714 return true;
5715
5716 // Parse the argument.
5717 LocTy ArgLoc;
5718 Type *ArgTy = nullptr;
5719 if (ParseType(ArgTy, ArgLoc))
5720 return true;
5721
5722 Value *V;
5723 if (ArgTy->isMetadataTy()) {
5724 if (ParseMetadataAsValue(V, PFS))
5725 return true;
5726 } else {
5727 if (ParseValue(ArgTy, V, PFS))
5728 return true;
5729 }
5730 Args.push_back(V);
5731 }
5732
5733 Lex.Lex(); // Lex the ']'.
5734 return false;
5735}
5736
5737/// ParseCleanupRet
5738/// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5739bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5740 Value *CleanupPad = nullptr;
5741
5742 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5743 return true;
5744
5745 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5746 return true;
5747
5748 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5749 return true;
5750
5751 BasicBlock *UnwindBB = nullptr;
5752 if (Lex.getKind() == lltok::kw_to) {
5753 Lex.Lex();
5754 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5755 return true;
5756 } else {
5757 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5758 return true;
5759 }
5760 }
5761
5762 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5763 return false;
5764}
5765
5766/// ParseCatchRet
5767/// ::= 'catchret' from Parent Value 'to' TypeAndValue
5768bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5769 Value *CatchPad = nullptr;
5770
5771 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5772 return true;
5773
5774 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5775 return true;
5776
5777 BasicBlock *BB;
5778 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5779 ParseTypeAndBasicBlock(BB, PFS))
5780 return true;
5781
5782 Inst = CatchReturnInst::Create(CatchPad, BB);
5783 return false;
5784}
5785
5786/// ParseCatchSwitch
5787/// ::= 'catchswitch' within Parent
5788bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5789 Value *ParentPad;
5790
5791 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5792 return true;
5793
5794 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5795 Lex.getKind() != lltok::LocalVarID)
5796 return TokError("expected scope value for catchswitch");
5797
5798 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5799 return true;
5800
5801 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5802 return true;
5803
5804 SmallVector<BasicBlock *, 32> Table;
5805 do {
5806 BasicBlock *DestBB;
5807 if (ParseTypeAndBasicBlock(DestBB, PFS))
5808 return true;
5809 Table.push_back(DestBB);
5810 } while (EatIfPresent(lltok::comma));
5811
5812 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5813 return true;
5814
5815 if (ParseToken(lltok::kw_unwind,
5816 "expected 'unwind' after catchswitch scope"))
5817 return true;
5818
5819 BasicBlock *UnwindBB = nullptr;
5820 if (EatIfPresent(lltok::kw_to)) {
5821 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5822 return true;
5823 } else {
5824 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5825 return true;
5826 }
5827
5828 auto *CatchSwitch =
5829 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5830 for (BasicBlock *DestBB : Table)
5831 CatchSwitch->addHandler(DestBB);
5832