Bug Summary

File:lib/AsmParser/LLParser.cpp
Warning:line 2185, column 11
Called C++ object pointer is null

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~svn329677/build-llvm/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn329677/lib/AsmParser -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn329677/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~svn329677/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-2018-04-11-031539-24776-1 -x c++ /build/llvm-toolchain-snapshot-7~svn329677/lib/AsmParser/LLParser.cpp

/build/llvm-toolchain-snapshot-7~svn329677/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))
1
Calling 'LLParser::ParseType'
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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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~svn329677/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_nocf_check: B.addAttribute(Attribute::NoCfCheck); break;
1135 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1136 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1137 case lltok::kw_optforfuzzing:
1138 B.addAttribute(Attribute::OptForFuzzing); break;
1139 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1140 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1141 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1142 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1143 case lltok::kw_returns_twice:
1144 B.addAttribute(Attribute::ReturnsTwice); break;
1145 case lltok::kw_speculatable: B.addAttribute(Attribute::Speculatable); break;
1146 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1147 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1148 case lltok::kw_sspstrong:
1149 B.addAttribute(Attribute::StackProtectStrong); break;
1150 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1151 case lltok::kw_shadowcallstack:
1152 B.addAttribute(Attribute::ShadowCallStack); break;
1153 case lltok::kw_sanitize_address:
1154 B.addAttribute(Attribute::SanitizeAddress); break;
1155 case lltok::kw_sanitize_hwaddress:
1156 B.addAttribute(Attribute::SanitizeHWAddress); break;
1157 case lltok::kw_sanitize_thread:
1158 B.addAttribute(Attribute::SanitizeThread); break;
1159 case lltok::kw_sanitize_memory:
1160 B.addAttribute(Attribute::SanitizeMemory); break;
1161 case lltok::kw_strictfp: B.addAttribute(Attribute::StrictFP); break;
1162 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1163 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1164
1165 // Error handling.
1166 case lltok::kw_inreg:
1167 case lltok::kw_signext:
1168 case lltok::kw_zeroext:
1169 HaveError |=
1170 Error(Lex.getLoc(),
1171 "invalid use of attribute on a function");
1172 break;
1173 case lltok::kw_byval:
1174 case lltok::kw_dereferenceable:
1175 case lltok::kw_dereferenceable_or_null:
1176 case lltok::kw_inalloca:
1177 case lltok::kw_nest:
1178 case lltok::kw_noalias:
1179 case lltok::kw_nocapture:
1180 case lltok::kw_nonnull:
1181 case lltok::kw_returned:
1182 case lltok::kw_sret:
1183 case lltok::kw_swifterror:
1184 case lltok::kw_swiftself:
1185 HaveError |=
1186 Error(Lex.getLoc(),
1187 "invalid use of parameter-only attribute on a function");
1188 break;
1189 }
1190
1191 Lex.Lex();
1192 }
1193}
1194
1195//===----------------------------------------------------------------------===//
1196// GlobalValue Reference/Resolution Routines.
1197//===----------------------------------------------------------------------===//
1198
1199static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1200 const std::string &Name) {
1201 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1202 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1203 else
1204 return new GlobalVariable(*M, PTy->getElementType(), false,
1205 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1206 nullptr, GlobalVariable::NotThreadLocal,
1207 PTy->getAddressSpace());
1208}
1209
1210/// GetGlobalVal - Get a value with the specified name or ID, creating a
1211/// forward reference record if needed. This can return null if the value
1212/// exists but does not have the right type.
1213GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1214 LocTy Loc) {
1215 PointerType *PTy = dyn_cast<PointerType>(Ty);
1216 if (!PTy) {
1217 Error(Loc, "global variable reference must have pointer type");
1218 return nullptr;
1219 }
1220
1221 // Look this name up in the normal function symbol table.
1222 GlobalValue *Val =
1223 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1224
1225 // If this is a forward reference for the value, see if we already created a
1226 // forward ref record.
1227 if (!Val) {
1228 auto I = ForwardRefVals.find(Name);
1229 if (I != ForwardRefVals.end())
1230 Val = I->second.first;
1231 }
1232
1233 // If we have the value in the symbol table or fwd-ref table, return it.
1234 if (Val) {
1235 if (Val->getType() == Ty) return Val;
1236 Error(Loc, "'@" + Name + "' defined with type '" +
1237 getTypeString(Val->getType()) + "'");
1238 return nullptr;
1239 }
1240
1241 // Otherwise, create a new forward reference for this value and remember it.
1242 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1243 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1244 return FwdVal;
1245}
1246
1247GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1248 PointerType *PTy = dyn_cast<PointerType>(Ty);
1249 if (!PTy) {
1250 Error(Loc, "global variable reference must have pointer type");
1251 return nullptr;
1252 }
1253
1254 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1255
1256 // If this is a forward reference for the value, see if we already created a
1257 // forward ref record.
1258 if (!Val) {
1259 auto I = ForwardRefValIDs.find(ID);
1260 if (I != ForwardRefValIDs.end())
1261 Val = I->second.first;
1262 }
1263
1264 // If we have the value in the symbol table or fwd-ref table, return it.
1265 if (Val) {
1266 if (Val->getType() == Ty) return Val;
1267 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1268 getTypeString(Val->getType()) + "'");
1269 return nullptr;
1270 }
1271
1272 // Otherwise, create a new forward reference for this value and remember it.
1273 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1274 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1275 return FwdVal;
1276}
1277
1278//===----------------------------------------------------------------------===//
1279// Comdat Reference/Resolution Routines.
1280//===----------------------------------------------------------------------===//
1281
1282Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1283 // Look this name up in the comdat symbol table.
1284 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1285 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1286 if (I != ComdatSymTab.end())
1287 return &I->second;
1288
1289 // Otherwise, create a new forward reference for this value and remember it.
1290 Comdat *C = M->getOrInsertComdat(Name);
1291 ForwardRefComdats[Name] = Loc;
1292 return C;
1293}
1294
1295//===----------------------------------------------------------------------===//
1296// Helper Routines.
1297//===----------------------------------------------------------------------===//
1298
1299/// ParseToken - If the current token has the specified kind, eat it and return
1300/// success. Otherwise, emit the specified error and return failure.
1301bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1302 if (Lex.getKind() != T)
1303 return TokError(ErrMsg);
1304 Lex.Lex();
1305 return false;
1306}
1307
1308/// ParseStringConstant
1309/// ::= StringConstant
1310bool LLParser::ParseStringConstant(std::string &Result) {
1311 if (Lex.getKind() != lltok::StringConstant)
1312 return TokError("expected string constant");
1313 Result = Lex.getStrVal();
1314 Lex.Lex();
1315 return false;
1316}
1317
1318/// ParseUInt32
1319/// ::= uint32
1320bool LLParser::ParseUInt32(uint32_t &Val) {
1321 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1322 return TokError("expected integer");
1323 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1324 if (Val64 != unsigned(Val64))
1325 return TokError("expected 32-bit integer (too large)");
1326 Val = Val64;
1327 Lex.Lex();
1328 return false;
1329}
1330
1331/// ParseUInt64
1332/// ::= uint64
1333bool LLParser::ParseUInt64(uint64_t &Val) {
1334 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1335 return TokError("expected integer");
1336 Val = Lex.getAPSIntVal().getLimitedValue();
1337 Lex.Lex();
1338 return false;
1339}
1340
1341/// ParseTLSModel
1342/// := 'localdynamic'
1343/// := 'initialexec'
1344/// := 'localexec'
1345bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1346 switch (Lex.getKind()) {
1347 default:
1348 return TokError("expected localdynamic, initialexec or localexec");
1349 case lltok::kw_localdynamic:
1350 TLM = GlobalVariable::LocalDynamicTLSModel;
1351 break;
1352 case lltok::kw_initialexec:
1353 TLM = GlobalVariable::InitialExecTLSModel;
1354 break;
1355 case lltok::kw_localexec:
1356 TLM = GlobalVariable::LocalExecTLSModel;
1357 break;
1358 }
1359
1360 Lex.Lex();
1361 return false;
1362}
1363
1364/// ParseOptionalThreadLocal
1365/// := /*empty*/
1366/// := 'thread_local'
1367/// := 'thread_local' '(' tlsmodel ')'
1368bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1369 TLM = GlobalVariable::NotThreadLocal;
1370 if (!EatIfPresent(lltok::kw_thread_local))
1371 return false;
1372
1373 TLM = GlobalVariable::GeneralDynamicTLSModel;
1374 if (Lex.getKind() == lltok::lparen) {
1375 Lex.Lex();
1376 return ParseTLSModel(TLM) ||
1377 ParseToken(lltok::rparen, "expected ')' after thread local model");
1378 }
1379 return false;
1380}
1381
1382/// ParseOptionalAddrSpace
1383/// := /*empty*/
1384/// := 'addrspace' '(' uint32 ')'
1385bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1386 AddrSpace = 0;
1387 if (!EatIfPresent(lltok::kw_addrspace))
1388 return false;
1389 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1390 ParseUInt32(AddrSpace) ||
1391 ParseToken(lltok::rparen, "expected ')' in address space");
1392}
1393
1394/// ParseStringAttribute
1395/// := StringConstant
1396/// := StringConstant '=' StringConstant
1397bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1398 std::string Attr = Lex.getStrVal();
1399 Lex.Lex();
1400 std::string Val;
1401 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1402 return true;
1403 B.addAttribute(Attr, Val);
1404 return false;
1405}
1406
1407/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1408bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1409 bool HaveError = false;
1410
1411 B.clear();
1412
1413 while (true) {
1414 lltok::Kind Token = Lex.getKind();
1415 switch (Token) {
1416 default: // End of attributes.
1417 return HaveError;
1418 case lltok::StringConstant: {
1419 if (ParseStringAttribute(B))
1420 return true;
1421 continue;
1422 }
1423 case lltok::kw_align: {
1424 unsigned Alignment;
1425 if (ParseOptionalAlignment(Alignment))
1426 return true;
1427 B.addAlignmentAttr(Alignment);
1428 continue;
1429 }
1430 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1431 case lltok::kw_dereferenceable: {
1432 uint64_t Bytes;
1433 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1434 return true;
1435 B.addDereferenceableAttr(Bytes);
1436 continue;
1437 }
1438 case lltok::kw_dereferenceable_or_null: {
1439 uint64_t Bytes;
1440 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1441 return true;
1442 B.addDereferenceableOrNullAttr(Bytes);
1443 continue;
1444 }
1445 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1446 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1447 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1448 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1449 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1450 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1451 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1452 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1453 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1454 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1455 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1456 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1457 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1458 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1459 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1460
1461 case lltok::kw_alignstack:
1462 case lltok::kw_alwaysinline:
1463 case lltok::kw_argmemonly:
1464 case lltok::kw_builtin:
1465 case lltok::kw_inlinehint:
1466 case lltok::kw_jumptable:
1467 case lltok::kw_minsize:
1468 case lltok::kw_naked:
1469 case lltok::kw_nobuiltin:
1470 case lltok::kw_noduplicate:
1471 case lltok::kw_noimplicitfloat:
1472 case lltok::kw_noinline:
1473 case lltok::kw_nonlazybind:
1474 case lltok::kw_noredzone:
1475 case lltok::kw_noreturn:
1476 case lltok::kw_nocf_check:
1477 case lltok::kw_nounwind:
1478 case lltok::kw_optforfuzzing:
1479 case lltok::kw_optnone:
1480 case lltok::kw_optsize:
1481 case lltok::kw_returns_twice:
1482 case lltok::kw_sanitize_address:
1483 case lltok::kw_sanitize_hwaddress:
1484 case lltok::kw_sanitize_memory:
1485 case lltok::kw_sanitize_thread:
1486 case lltok::kw_ssp:
1487 case lltok::kw_sspreq:
1488 case lltok::kw_sspstrong:
1489 case lltok::kw_safestack:
1490 case lltok::kw_shadowcallstack:
1491 case lltok::kw_strictfp:
1492 case lltok::kw_uwtable:
1493 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1494 break;
1495 }
1496
1497 Lex.Lex();
1498 }
1499}
1500
1501/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1502bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1503 bool HaveError = false;
1504
1505 B.clear();
1506
1507 while (true) {
1508 lltok::Kind Token = Lex.getKind();
1509 switch (Token) {
1510 default: // End of attributes.
1511 return HaveError;
1512 case lltok::StringConstant: {
1513 if (ParseStringAttribute(B))
1514 return true;
1515 continue;
1516 }
1517 case lltok::kw_dereferenceable: {
1518 uint64_t Bytes;
1519 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1520 return true;
1521 B.addDereferenceableAttr(Bytes);
1522 continue;
1523 }
1524 case lltok::kw_dereferenceable_or_null: {
1525 uint64_t Bytes;
1526 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1527 return true;
1528 B.addDereferenceableOrNullAttr(Bytes);
1529 continue;
1530 }
1531 case lltok::kw_align: {
1532 unsigned Alignment;
1533 if (ParseOptionalAlignment(Alignment))
1534 return true;
1535 B.addAlignmentAttr(Alignment);
1536 continue;
1537 }
1538 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1539 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1540 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1541 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1542 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1543
1544 // Error handling.
1545 case lltok::kw_byval:
1546 case lltok::kw_inalloca:
1547 case lltok::kw_nest:
1548 case lltok::kw_nocapture:
1549 case lltok::kw_returned:
1550 case lltok::kw_sret:
1551 case lltok::kw_swifterror:
1552 case lltok::kw_swiftself:
1553 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1554 break;
1555
1556 case lltok::kw_alignstack:
1557 case lltok::kw_alwaysinline:
1558 case lltok::kw_argmemonly:
1559 case lltok::kw_builtin:
1560 case lltok::kw_cold:
1561 case lltok::kw_inlinehint:
1562 case lltok::kw_jumptable:
1563 case lltok::kw_minsize:
1564 case lltok::kw_naked:
1565 case lltok::kw_nobuiltin:
1566 case lltok::kw_noduplicate:
1567 case lltok::kw_noimplicitfloat:
1568 case lltok::kw_noinline:
1569 case lltok::kw_nonlazybind:
1570 case lltok::kw_noredzone:
1571 case lltok::kw_noreturn:
1572 case lltok::kw_nocf_check:
1573 case lltok::kw_nounwind:
1574 case lltok::kw_optforfuzzing:
1575 case lltok::kw_optnone:
1576 case lltok::kw_optsize:
1577 case lltok::kw_returns_twice:
1578 case lltok::kw_sanitize_address:
1579 case lltok::kw_sanitize_hwaddress:
1580 case lltok::kw_sanitize_memory:
1581 case lltok::kw_sanitize_thread:
1582 case lltok::kw_ssp:
1583 case lltok::kw_sspreq:
1584 case lltok::kw_sspstrong:
1585 case lltok::kw_safestack:
1586 case lltok::kw_shadowcallstack:
1587 case lltok::kw_strictfp:
1588 case lltok::kw_uwtable:
1589 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1590 break;
1591
1592 case lltok::kw_readnone:
1593 case lltok::kw_readonly:
1594 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1595 }
1596
1597 Lex.Lex();
1598 }
1599}
1600
1601static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1602 HasLinkage = true;
1603 switch (Kind) {
1604 default:
1605 HasLinkage = false;
1606 return GlobalValue::ExternalLinkage;
1607 case lltok::kw_private:
1608 return GlobalValue::PrivateLinkage;
1609 case lltok::kw_internal:
1610 return GlobalValue::InternalLinkage;
1611 case lltok::kw_weak:
1612 return GlobalValue::WeakAnyLinkage;
1613 case lltok::kw_weak_odr:
1614 return GlobalValue::WeakODRLinkage;
1615 case lltok::kw_linkonce:
1616 return GlobalValue::LinkOnceAnyLinkage;
1617 case lltok::kw_linkonce_odr:
1618 return GlobalValue::LinkOnceODRLinkage;
1619 case lltok::kw_available_externally:
1620 return GlobalValue::AvailableExternallyLinkage;
1621 case lltok::kw_appending:
1622 return GlobalValue::AppendingLinkage;
1623 case lltok::kw_common:
1624 return GlobalValue::CommonLinkage;
1625 case lltok::kw_extern_weak:
1626 return GlobalValue::ExternalWeakLinkage;
1627 case lltok::kw_external:
1628 return GlobalValue::ExternalLinkage;
1629 }
1630}
1631
1632/// ParseOptionalLinkage
1633/// ::= /*empty*/
1634/// ::= 'private'
1635/// ::= 'internal'
1636/// ::= 'weak'
1637/// ::= 'weak_odr'
1638/// ::= 'linkonce'
1639/// ::= 'linkonce_odr'
1640/// ::= 'available_externally'
1641/// ::= 'appending'
1642/// ::= 'common'
1643/// ::= 'extern_weak'
1644/// ::= 'external'
1645bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1646 unsigned &Visibility,
1647 unsigned &DLLStorageClass,
1648 bool &DSOLocal) {
1649 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1650 if (HasLinkage)
1651 Lex.Lex();
1652 ParseOptionalDSOLocal(DSOLocal);
1653 ParseOptionalVisibility(Visibility);
1654 ParseOptionalDLLStorageClass(DLLStorageClass);
1655
1656 if (DSOLocal && DLLStorageClass == GlobalValue::DLLImportStorageClass) {
1657 return Error(Lex.getLoc(), "dso_location and DLL-StorageClass mismatch");
1658 }
1659
1660 return false;
1661}
1662
1663void LLParser::ParseOptionalDSOLocal(bool &DSOLocal) {
1664 switch (Lex.getKind()) {
1665 default:
1666 DSOLocal = false;
1667 break;
1668 case lltok::kw_dso_local:
1669 DSOLocal = true;
1670 Lex.Lex();
1671 break;
1672 case lltok::kw_dso_preemptable:
1673 DSOLocal = false;
1674 Lex.Lex();
1675 break;
1676 }
1677}
1678
1679/// ParseOptionalVisibility
1680/// ::= /*empty*/
1681/// ::= 'default'
1682/// ::= 'hidden'
1683/// ::= 'protected'
1684///
1685void LLParser::ParseOptionalVisibility(unsigned &Res) {
1686 switch (Lex.getKind()) {
1687 default:
1688 Res = GlobalValue::DefaultVisibility;
1689 return;
1690 case lltok::kw_default:
1691 Res = GlobalValue::DefaultVisibility;
1692 break;
1693 case lltok::kw_hidden:
1694 Res = GlobalValue::HiddenVisibility;
1695 break;
1696 case lltok::kw_protected:
1697 Res = GlobalValue::ProtectedVisibility;
1698 break;
1699 }
1700 Lex.Lex();
1701}
1702
1703/// ParseOptionalDLLStorageClass
1704/// ::= /*empty*/
1705/// ::= 'dllimport'
1706/// ::= 'dllexport'
1707///
1708void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1709 switch (Lex.getKind()) {
1710 default:
1711 Res = GlobalValue::DefaultStorageClass;
1712 return;
1713 case lltok::kw_dllimport:
1714 Res = GlobalValue::DLLImportStorageClass;
1715 break;
1716 case lltok::kw_dllexport:
1717 Res = GlobalValue::DLLExportStorageClass;
1718 break;
1719 }
1720 Lex.Lex();
1721}
1722
1723/// ParseOptionalCallingConv
1724/// ::= /*empty*/
1725/// ::= 'ccc'
1726/// ::= 'fastcc'
1727/// ::= 'intel_ocl_bicc'
1728/// ::= 'coldcc'
1729/// ::= 'x86_stdcallcc'
1730/// ::= 'x86_fastcallcc'
1731/// ::= 'x86_thiscallcc'
1732/// ::= 'x86_vectorcallcc'
1733/// ::= 'arm_apcscc'
1734/// ::= 'arm_aapcscc'
1735/// ::= 'arm_aapcs_vfpcc'
1736/// ::= 'msp430_intrcc'
1737/// ::= 'avr_intrcc'
1738/// ::= 'avr_signalcc'
1739/// ::= 'ptx_kernel'
1740/// ::= 'ptx_device'
1741/// ::= 'spir_func'
1742/// ::= 'spir_kernel'
1743/// ::= 'x86_64_sysvcc'
1744/// ::= 'win64cc'
1745/// ::= 'webkit_jscc'
1746/// ::= 'anyregcc'
1747/// ::= 'preserve_mostcc'
1748/// ::= 'preserve_allcc'
1749/// ::= 'ghccc'
1750/// ::= 'swiftcc'
1751/// ::= 'x86_intrcc'
1752/// ::= 'hhvmcc'
1753/// ::= 'hhvm_ccc'
1754/// ::= 'cxx_fast_tlscc'
1755/// ::= 'amdgpu_vs'
1756/// ::= 'amdgpu_ls'
1757/// ::= 'amdgpu_hs'
1758/// ::= 'amdgpu_es'
1759/// ::= 'amdgpu_gs'
1760/// ::= 'amdgpu_ps'
1761/// ::= 'amdgpu_cs'
1762/// ::= 'amdgpu_kernel'
1763/// ::= 'cc' UINT
1764///
1765bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1766 switch (Lex.getKind()) {
1767 default: CC = CallingConv::C; return false;
1768 case lltok::kw_ccc: CC = CallingConv::C; break;
1769 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1770 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1771 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1772 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1773 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1774 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1775 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1776 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1777 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1778 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1779 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1780 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1781 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1782 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1783 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1784 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1785 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1786 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1787 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1788 case lltok::kw_win64cc: CC = CallingConv::Win64; break;
1789 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1790 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1791 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1792 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1793 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1794 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1795 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1796 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1797 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1798 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1799 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1800 case lltok::kw_amdgpu_ls: CC = CallingConv::AMDGPU_LS; break;
1801 case lltok::kw_amdgpu_hs: CC = CallingConv::AMDGPU_HS; break;
1802 case lltok::kw_amdgpu_es: CC = CallingConv::AMDGPU_ES; break;
1803 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1804 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1805 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1806 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1807 case lltok::kw_cc: {
1808 Lex.Lex();
1809 return ParseUInt32(CC);
1810 }
1811 }
1812
1813 Lex.Lex();
1814 return false;
1815}
1816
1817/// ParseMetadataAttachment
1818/// ::= !dbg !42
1819bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1820 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~svn329677/lib/AsmParser/LLParser.cpp"
, 1820, __extension__ __PRETTY_FUNCTION__))
;
1821
1822 std::string Name = Lex.getStrVal();
1823 Kind = M->getMDKindID(Name);
1824 Lex.Lex();
1825
1826 return ParseMDNode(MD);
1827}
1828
1829/// ParseInstructionMetadata
1830/// ::= !dbg !42 (',' !dbg !57)*
1831bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1832 do {
1833 if (Lex.getKind() != lltok::MetadataVar)
1834 return TokError("expected metadata after comma");
1835
1836 unsigned MDK;
1837 MDNode *N;
1838 if (ParseMetadataAttachment(MDK, N))
1839 return true;
1840
1841 Inst.setMetadata(MDK, N);
1842 if (MDK == LLVMContext::MD_tbaa)
1843 InstsWithTBAATag.push_back(&Inst);
1844
1845 // If this is the end of the list, we're done.
1846 } while (EatIfPresent(lltok::comma));
1847 return false;
1848}
1849
1850/// ParseGlobalObjectMetadataAttachment
1851/// ::= !dbg !57
1852bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1853 unsigned MDK;
1854 MDNode *N;
1855 if (ParseMetadataAttachment(MDK, N))
1856 return true;
1857
1858 GO.addMetadata(MDK, *N);
1859 return false;
1860}
1861
1862/// ParseOptionalFunctionMetadata
1863/// ::= (!dbg !57)*
1864bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1865 while (Lex.getKind() == lltok::MetadataVar)
1866 if (ParseGlobalObjectMetadataAttachment(F))
1867 return true;
1868 return false;
1869}
1870
1871/// ParseOptionalAlignment
1872/// ::= /* empty */
1873/// ::= 'align' 4
1874bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1875 Alignment = 0;
1876 if (!EatIfPresent(lltok::kw_align))
1877 return false;
1878 LocTy AlignLoc = Lex.getLoc();
1879 if (ParseUInt32(Alignment)) return true;
1880 if (!isPowerOf2_32(Alignment))
1881 return Error(AlignLoc, "alignment is not a power of two");
1882 if (Alignment > Value::MaximumAlignment)
1883 return Error(AlignLoc, "huge alignments are not supported yet");
1884 return false;
1885}
1886
1887/// ParseOptionalDerefAttrBytes
1888/// ::= /* empty */
1889/// ::= AttrKind '(' 4 ')'
1890///
1891/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1892bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1893 uint64_t &Bytes) {
1894 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~svn329677/lib/AsmParser/LLParser.cpp"
, 1896, __extension__ __PRETTY_FUNCTION__))
1895 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~svn329677/lib/AsmParser/LLParser.cpp"
, 1896, __extension__ __PRETTY_FUNCTION__))
1896 "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~svn329677/lib/AsmParser/LLParser.cpp"
, 1896, __extension__ __PRETTY_FUNCTION__))
;
1897
1898 Bytes = 0;
1899 if (!EatIfPresent(AttrKind))
1900 return false;
1901 LocTy ParenLoc = Lex.getLoc();
1902 if (!EatIfPresent(lltok::lparen))
1903 return Error(ParenLoc, "expected '('");
1904 LocTy DerefLoc = Lex.getLoc();
1905 if (ParseUInt64(Bytes)) return true;
1906 ParenLoc = Lex.getLoc();
1907 if (!EatIfPresent(lltok::rparen))
1908 return Error(ParenLoc, "expected ')'");
1909 if (!Bytes)
1910 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1911 return false;
1912}
1913
1914/// ParseOptionalCommaAlign
1915/// ::=
1916/// ::= ',' align 4
1917///
1918/// This returns with AteExtraComma set to true if it ate an excess comma at the
1919/// end.
1920bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1921 bool &AteExtraComma) {
1922 AteExtraComma = false;
1923 while (EatIfPresent(lltok::comma)) {
1924 // Metadata at the end is an early exit.
1925 if (Lex.getKind() == lltok::MetadataVar) {
1926 AteExtraComma = true;
1927 return false;
1928 }
1929
1930 if (Lex.getKind() != lltok::kw_align)
1931 return Error(Lex.getLoc(), "expected metadata or 'align'");
1932
1933 if (ParseOptionalAlignment(Alignment)) return true;
1934 }
1935
1936 return false;
1937}
1938
1939/// ParseOptionalCommaAddrSpace
1940/// ::=
1941/// ::= ',' addrspace(1)
1942///
1943/// This returns with AteExtraComma set to true if it ate an excess comma at the
1944/// end.
1945bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
1946 LocTy &Loc,
1947 bool &AteExtraComma) {
1948 AteExtraComma = false;
1949 while (EatIfPresent(lltok::comma)) {
1950 // Metadata at the end is an early exit.
1951 if (Lex.getKind() == lltok::MetadataVar) {
1952 AteExtraComma = true;
1953 return false;
1954 }
1955
1956 Loc = Lex.getLoc();
1957 if (Lex.getKind() != lltok::kw_addrspace)
1958 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
1959
1960 if (ParseOptionalAddrSpace(AddrSpace))
1961 return true;
1962 }
1963
1964 return false;
1965}
1966
1967bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1968 Optional<unsigned> &HowManyArg) {
1969 Lex.Lex();
1970
1971 auto StartParen = Lex.getLoc();
1972 if (!EatIfPresent(lltok::lparen))
1973 return Error(StartParen, "expected '('");
1974
1975 if (ParseUInt32(BaseSizeArg))
1976 return true;
1977
1978 if (EatIfPresent(lltok::comma)) {
1979 auto HowManyAt = Lex.getLoc();
1980 unsigned HowMany;
1981 if (ParseUInt32(HowMany))
1982 return true;
1983 if (HowMany == BaseSizeArg)
1984 return Error(HowManyAt,
1985 "'allocsize' indices can't refer to the same parameter");
1986 HowManyArg = HowMany;
1987 } else
1988 HowManyArg = None;
1989
1990 auto EndParen = Lex.getLoc();
1991 if (!EatIfPresent(lltok::rparen))
1992 return Error(EndParen, "expected ')'");
1993 return false;
1994}
1995
1996/// ParseScopeAndOrdering
1997/// if isAtomic: ::= SyncScope? AtomicOrdering
1998/// else: ::=
1999///
2000/// This sets Scope and Ordering to the parsed values.
2001bool LLParser::ParseScopeAndOrdering(bool isAtomic, SyncScope::ID &SSID,
2002 AtomicOrdering &Ordering) {
2003 if (!isAtomic)
2004 return false;
2005
2006 return ParseScope(SSID) || ParseOrdering(Ordering);
2007}
2008
2009/// ParseScope
2010/// ::= syncscope("singlethread" | "<target scope>")?
2011///
2012/// This sets synchronization scope ID to the ID of the parsed value.
2013bool LLParser::ParseScope(SyncScope::ID &SSID) {
2014 SSID = SyncScope::System;
2015 if (EatIfPresent(lltok::kw_syncscope)) {
2016 auto StartParenAt = Lex.getLoc();
2017 if (!EatIfPresent(lltok::lparen))
2018 return Error(StartParenAt, "Expected '(' in syncscope");
2019
2020 std::string SSN;
2021 auto SSNAt = Lex.getLoc();
2022 if (ParseStringConstant(SSN))
2023 return Error(SSNAt, "Expected synchronization scope name");
2024
2025 auto EndParenAt = Lex.getLoc();
2026 if (!EatIfPresent(lltok::rparen))
2027 return Error(EndParenAt, "Expected ')' in syncscope");
2028
2029 SSID = Context.getOrInsertSyncScopeID(SSN);
2030 }
2031
2032 return false;
2033}
2034
2035/// ParseOrdering
2036/// ::= AtomicOrdering
2037///
2038/// This sets Ordering to the parsed value.
2039bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
2040 switch (Lex.getKind()) {
2041 default: return TokError("Expected ordering on atomic instruction");
2042 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
2043 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
2044 // Not specified yet:
2045 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
2046 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
2047 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
2048 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
2049 case lltok::kw_seq_cst:
2050 Ordering = AtomicOrdering::SequentiallyConsistent;
2051 break;
2052 }
2053 Lex.Lex();
2054 return false;
2055}
2056
2057/// ParseOptionalStackAlignment
2058/// ::= /* empty */
2059/// ::= 'alignstack' '(' 4 ')'
2060bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
2061 Alignment = 0;
2062 if (!EatIfPresent(lltok::kw_alignstack))
2063 return false;
2064 LocTy ParenLoc = Lex.getLoc();
2065 if (!EatIfPresent(lltok::lparen))
2066 return Error(ParenLoc, "expected '('");
2067 LocTy AlignLoc = Lex.getLoc();
2068 if (ParseUInt32(Alignment)) return true;
2069 ParenLoc = Lex.getLoc();
2070 if (!EatIfPresent(lltok::rparen))
2071 return Error(ParenLoc, "expected ')'");
2072 if (!isPowerOf2_32(Alignment))
2073 return Error(AlignLoc, "stack alignment is not a power of two");
2074 return false;
2075}
2076
2077/// ParseIndexList - This parses the index list for an insert/extractvalue
2078/// instruction. This sets AteExtraComma in the case where we eat an extra
2079/// comma at the end of the line and find that it is followed by metadata.
2080/// Clients that don't allow metadata can call the version of this function that
2081/// only takes one argument.
2082///
2083/// ParseIndexList
2084/// ::= (',' uint32)+
2085///
2086bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
2087 bool &AteExtraComma) {
2088 AteExtraComma = false;
2089
2090 if (Lex.getKind() != lltok::comma)
2091 return TokError("expected ',' as start of index list");
2092
2093 while (EatIfPresent(lltok::comma)) {
2094 if (Lex.getKind() == lltok::MetadataVar) {
2095 if (Indices.empty()) return TokError("expected index");
2096 AteExtraComma = true;
2097 return false;
2098 }
2099 unsigned Idx = 0;
2100 if (ParseUInt32(Idx)) return true;
2101 Indices.push_back(Idx);
2102 }
2103
2104 return false;
2105}
2106
2107//===----------------------------------------------------------------------===//
2108// Type Parsing.
2109//===----------------------------------------------------------------------===//
2110
2111/// ParseType - Parse a type.
2112bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2113 SMLoc TypeLoc = Lex.getLoc();
2114 switch (Lex.getKind()) {
3
Control jumps to 'case lsquare:' at line 2127
13
Control jumps to 'case lsquare:' at line 2127
2115 default:
2116 return TokError(Msg);
2117 case lltok::Type:
2118 // Type ::= 'float' | 'void' (etc)
2119 Result = Lex.getTyVal();
2120 Lex.Lex();
2121 break;
2122 case lltok::lbrace:
2123 // Type ::= StructType
2124 if (ParseAnonStructType(Result, false))
2125 return true;
2126 break;
2127 case lltok::lsquare:
2128 // Type ::= '[' ... ']'
2129 Lex.Lex(); // eat the lsquare.
2130 if (ParseArrayVectorType(Result, false))
4
Calling 'LLParser::ParseArrayVectorType'
14
Calling 'LLParser::ParseArrayVectorType'
17
Returning from 'LLParser::ParseArrayVectorType'
18
Assuming the condition is false
19
Taking false branch
2131 return true;
2132 break;
20
Execution continues on line 2175
2133 case lltok::less: // Either vector or packed struct.
2134 // Type ::= '<' ... '>'
2135 Lex.Lex();
2136 if (Lex.getKind() == lltok::lbrace) {
2137 if (ParseAnonStructType(Result, true) ||
2138 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2139 return true;
2140 } else if (ParseArrayVectorType(Result, true))
2141 return true;
2142 break;
2143 case lltok::LocalVar: {
2144 // Type ::= %foo
2145 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2146
2147 // If the type hasn't been defined yet, create a forward definition and
2148 // remember where that forward def'n was seen (in case it never is defined).
2149 if (!Entry.first) {
2150 Entry.first = StructType::create(Context, Lex.getStrVal());
2151 Entry.second = Lex.getLoc();
2152 }
2153 Result = Entry.first;
2154 Lex.Lex();
2155 break;
2156 }
2157
2158 case lltok::LocalVarID: {
2159 // Type ::= %4
2160 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2161
2162 // If the type hasn't been defined yet, create a forward definition and
2163 // remember where that forward def'n was seen (in case it never is defined).
2164 if (!Entry.first) {
2165 Entry.first = StructType::create(Context);
2166 Entry.second = Lex.getLoc();
2167 }
2168 Result = Entry.first;
2169 Lex.Lex();
2170 break;
2171 }
2172 }
2173
2174 // Parse the type suffixes.
2175 while (true) {
21
Loop condition is true. Entering loop body
2176 switch (Lex.getKind()) {
22
Control jumps to 'case star:' at line 2184
2177 // End of type.
2178 default:
2179 if (!AllowVoid && Result->isVoidTy())
2180 return Error(TypeLoc, "void type only allowed for function results");
2181 return false;
2182
2183 // Type ::= Type '*'
2184 case lltok::star:
2185 if (Result->isLabelTy())
23
Called C++ object pointer is null
2186 return TokError("basic block pointers are invalid");
2187 if (Result->isVoidTy())
2188 return TokError("pointers to void are invalid - use i8* instead");
2189 if (!PointerType::isValidElementType(Result))
2190 return TokError("pointer to this type is invalid");
2191 Result = PointerType::getUnqual(Result);
2192 Lex.Lex();
2193 break;
2194
2195 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2196 case lltok::kw_addrspace: {
2197 if (Result->isLabelTy())
2198 return TokError("basic block pointers are invalid");
2199 if (Result->isVoidTy())
2200 return TokError("pointers to void are invalid; use i8* instead");
2201 if (!PointerType::isValidElementType(Result))
2202 return TokError("pointer to this type is invalid");
2203 unsigned AddrSpace;
2204 if (ParseOptionalAddrSpace(AddrSpace) ||
2205 ParseToken(lltok::star, "expected '*' in address space"))
2206 return true;
2207
2208 Result = PointerType::get(Result, AddrSpace);
2209 break;
2210 }
2211
2212 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2213 case lltok::lparen:
2214 if (ParseFunctionType(Result))
2215 return true;
2216 break;
2217 }
2218 }
2219}
2220
2221/// ParseParameterList
2222/// ::= '(' ')'
2223/// ::= '(' Arg (',' Arg)* ')'
2224/// Arg
2225/// ::= Type OptionalAttributes Value OptionalAttributes
2226bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2227 PerFunctionState &PFS, bool IsMustTailCall,
2228 bool InVarArgsFunc) {
2229 if (ParseToken(lltok::lparen, "expected '(' in call"))
2230 return true;
2231
2232 while (Lex.getKind() != lltok::rparen) {
2233 // If this isn't the first argument, we need a comma.
2234 if (!ArgList.empty() &&
2235 ParseToken(lltok::comma, "expected ',' in argument list"))
2236 return true;
2237
2238 // Parse an ellipsis if this is a musttail call in a variadic function.
2239 if (Lex.getKind() == lltok::dotdotdot) {
2240 const char *Msg = "unexpected ellipsis in argument list for ";
2241 if (!IsMustTailCall)
2242 return TokError(Twine(Msg) + "non-musttail call");
2243 if (!InVarArgsFunc)
2244 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2245 Lex.Lex(); // Lex the '...', it is purely for readability.
2246 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2247 }
2248
2249 // Parse the argument.
2250 LocTy ArgLoc;
2251 Type *ArgTy = nullptr;
2252 AttrBuilder ArgAttrs;
2253 Value *V;
2254 if (ParseType(ArgTy, ArgLoc))
2255 return true;
2256
2257 if (ArgTy->isMetadataTy()) {
2258 if (ParseMetadataAsValue(V, PFS))
2259 return true;
2260 } else {
2261 // Otherwise, handle normal operands.
2262 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2263 return true;
2264 }
2265 ArgList.push_back(ParamInfo(
2266 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2267 }
2268
2269 if (IsMustTailCall && InVarArgsFunc)
2270 return TokError("expected '...' at end of argument list for musttail call "
2271 "in varargs function");
2272
2273 Lex.Lex(); // Lex the ')'.
2274 return false;
2275}
2276
2277/// ParseOptionalOperandBundles
2278/// ::= /*empty*/
2279/// ::= '[' OperandBundle [, OperandBundle ]* ']'
2280///
2281/// OperandBundle
2282/// ::= bundle-tag '(' ')'
2283/// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2284///
2285/// bundle-tag ::= String Constant
2286bool LLParser::ParseOptionalOperandBundles(
2287 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2288 LocTy BeginLoc = Lex.getLoc();
2289 if (!EatIfPresent(lltok::lsquare))
2290 return false;
2291
2292 while (Lex.getKind() != lltok::rsquare) {
2293 // If this isn't the first operand bundle, we need a comma.
2294 if (!BundleList.empty() &&
2295 ParseToken(lltok::comma, "expected ',' in input list"))
2296 return true;
2297
2298 std::string Tag;
2299 if (ParseStringConstant(Tag))
2300 return true;
2301
2302 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2303 return true;
2304
2305 std::vector<Value *> Inputs;
2306 while (Lex.getKind() != lltok::rparen) {
2307 // If this isn't the first input, we need a comma.
2308 if (!Inputs.empty() &&
2309 ParseToken(lltok::comma, "expected ',' in input list"))
2310 return true;
2311
2312 Type *Ty = nullptr;
2313 Value *Input = nullptr;
2314 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2315 return true;
2316 Inputs.push_back(Input);
2317 }
2318
2319 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2320
2321 Lex.Lex(); // Lex the ')'.
2322 }
2323
2324 if (BundleList.empty())
2325 return Error(BeginLoc, "operand bundle set must not be empty");
2326
2327 Lex.Lex(); // Lex the ']'.
2328 return false;
2329}
2330
2331/// ParseArgumentList - Parse the argument list for a function type or function
2332/// prototype.
2333/// ::= '(' ArgTypeListI ')'
2334/// ArgTypeListI
2335/// ::= /*empty*/
2336/// ::= '...'
2337/// ::= ArgTypeList ',' '...'
2338/// ::= ArgType (',' ArgType)*
2339///
2340bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2341 bool &isVarArg){
2342 isVarArg = false;
2343 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~svn329677/lib/AsmParser/LLParser.cpp"
, 2343, __extension__ __PRETTY_FUNCTION__))
;
2344 Lex.Lex(); // eat the (.
2345
2346 if (Lex.getKind() == lltok::rparen) {
2347 // empty
2348 } else if (Lex.getKind() == lltok::dotdotdot) {
2349 isVarArg = true;
2350 Lex.Lex();
2351 } else {
2352 LocTy TypeLoc = Lex.getLoc();
2353 Type *ArgTy = nullptr;
2354 AttrBuilder Attrs;
2355 std::string Name;
2356
2357 if (ParseType(ArgTy) ||
2358 ParseOptionalParamAttrs(Attrs)) return true;
2359
2360 if (ArgTy->isVoidTy())
2361 return Error(TypeLoc, "argument can not have void type");
2362
2363 if (Lex.getKind() == lltok::LocalVar) {
2364 Name = Lex.getStrVal();
2365 Lex.Lex();
2366 }
2367
2368 if (!FunctionType::isValidArgumentType(ArgTy))
2369 return Error(TypeLoc, "invalid type for function argument");
2370
2371 ArgList.emplace_back(TypeLoc, ArgTy,
2372 AttributeSet::get(ArgTy->getContext(), Attrs),
2373 std::move(Name));
2374
2375 while (EatIfPresent(lltok::comma)) {
2376 // Handle ... at end of arg list.
2377 if (EatIfPresent(lltok::dotdotdot)) {
2378 isVarArg = true;
2379 break;
2380 }
2381
2382 // Otherwise must be an argument type.
2383 TypeLoc = Lex.getLoc();
2384 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2385
2386 if (ArgTy->isVoidTy())
2387 return Error(TypeLoc, "argument can not have void type");
2388
2389 if (Lex.getKind() == lltok::LocalVar) {
2390 Name = Lex.getStrVal();
2391 Lex.Lex();
2392 } else {
2393 Name = "";
2394 }
2395
2396 if (!ArgTy->isFirstClassType())
2397 return Error(TypeLoc, "invalid type for function argument");
2398
2399 ArgList.emplace_back(TypeLoc, ArgTy,
2400 AttributeSet::get(ArgTy->getContext(), Attrs),
2401 std::move(Name));
2402 }
2403 }
2404
2405 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2406}
2407
2408/// ParseFunctionType
2409/// ::= Type ArgumentList OptionalAttrs
2410bool LLParser::ParseFunctionType(Type *&Result) {
2411 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~svn329677/lib/AsmParser/LLParser.cpp"
, 2411, __extension__ __PRETTY_FUNCTION__))
;
2412
2413 if (!FunctionType::isValidReturnType(Result))
2414 return TokError("invalid function return type");
2415
2416 SmallVector<ArgInfo, 8> ArgList;
2417 bool isVarArg;
2418 if (ParseArgumentList(ArgList, isVarArg))
2419 return true;
2420
2421 // Reject names on the arguments lists.
2422 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2423 if (!ArgList[i].Name.empty())
2424 return Error(ArgList[i].Loc, "argument name invalid in function type");
2425 if (ArgList[i].Attrs.hasAttributes())
2426 return Error(ArgList[i].Loc,
2427 "argument attributes invalid in function type");
2428 }
2429
2430 SmallVector<Type*, 16> ArgListTy;
2431 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2432 ArgListTy.push_back(ArgList[i].Ty);
2433
2434 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2435 return false;
2436}
2437
2438/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2439/// other structs.
2440bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2441 SmallVector<Type*, 8> Elts;
2442 if (ParseStructBody(Elts)) return true;
2443
2444 Result = StructType::get(Context, Elts, Packed);
2445 return false;
2446}
2447
2448/// ParseStructDefinition - Parse a struct in a 'type' definition.
2449bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2450 std::pair<Type*, LocTy> &Entry,
2451 Type *&ResultTy) {
2452 // If the type was already defined, diagnose the redefinition.
2453 if (Entry.first && !Entry.second.isValid())
2454 return Error(TypeLoc, "redefinition of type");
2455
2456 // If we have opaque, just return without filling in the definition for the
2457 // struct. This counts as a definition as far as the .ll file goes.
2458 if (EatIfPresent(lltok::kw_opaque)) {
2459 // This type is being defined, so clear the location to indicate this.
2460 Entry.second = SMLoc();
2461
2462 // If this type number has never been uttered, create it.
2463 if (!Entry.first)
2464 Entry.first = StructType::create(Context, Name);
2465 ResultTy = Entry.first;
2466 return false;
2467 }
2468
2469 // If the type starts with '<', then it is either a packed struct or a vector.
2470 bool isPacked = EatIfPresent(lltok::less);
2471
2472 // If we don't have a struct, then we have a random type alias, which we
2473 // accept for compatibility with old files. These types are not allowed to be
2474 // forward referenced and not allowed to be recursive.
2475 if (Lex.getKind() != lltok::lbrace) {
2476 if (Entry.first)
2477 return Error(TypeLoc, "forward references to non-struct type");
2478
2479 ResultTy = nullptr;
2480 if (isPacked)
2481 return ParseArrayVectorType(ResultTy, true);
2482 return ParseType(ResultTy);
2483 }
2484
2485 // This type is being defined, so clear the location to indicate this.
2486 Entry.second = SMLoc();
2487
2488 // If this type number has never been uttered, create it.
2489 if (!Entry.first)
2490 Entry.first = StructType::create(Context, Name);
2491
2492 StructType *STy = cast<StructType>(Entry.first);
2493
2494 SmallVector<Type*, 8> Body;
2495 if (ParseStructBody(Body) ||
2496 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2497 return true;
2498
2499 STy->setBody(Body, isPacked);
2500 ResultTy = STy;
2501 return false;
2502}
2503
2504/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2505/// StructType
2506/// ::= '{' '}'
2507/// ::= '{' Type (',' Type)* '}'
2508/// ::= '<' '{' '}' '>'
2509/// ::= '<' '{' Type (',' Type)* '}' '>'
2510bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2511 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~svn329677/lib/AsmParser/LLParser.cpp"
, 2511, __extension__ __PRETTY_FUNCTION__))
;
2512 Lex.Lex(); // Consume the '{'
2513
2514 // Handle the empty struct.
2515 if (EatIfPresent(lltok::rbrace))
2516 return false;
2517
2518 LocTy EltTyLoc = Lex.getLoc();
2519 Type *Ty = nullptr;
2520 if (ParseType(Ty)) return true;
2521 Body.push_back(Ty);
2522
2523 if (!StructType::isValidElementType(Ty))
2524 return Error(EltTyLoc, "invalid element type for struct");
2525
2526 while (EatIfPresent(lltok::comma)) {
2527 EltTyLoc = Lex.getLoc();
2528 if (ParseType(Ty)) return true;
2529
2530 if (!StructType::isValidElementType(Ty))
2531 return Error(EltTyLoc, "invalid element type for struct");
2532
2533 Body.push_back(Ty);
2534 }
2535
2536 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2537}
2538
2539/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2540/// token has already been consumed.
2541/// Type
2542/// ::= '[' APSINTVAL 'x' Types ']'
2543/// ::= '<' APSINTVAL 'x' Types '>'
2544bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2545 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
5
Assuming the condition is false
7
Taking false branch
15
Assuming the condition is true
2546 Lex.getAPSIntVal().getBitWidth() > 64)
6
Assuming the condition is false
2547 return TokError("expected number in address space");
16
Returning without writing to 'Result'
2548
2549 LocTy SizeLoc = Lex.getLoc();
2550 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2551 Lex.Lex();
2552
2553 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
8
Taking false branch
2554 return true;
2555
2556 LocTy TypeLoc = Lex.getLoc();
2557 Type *EltTy = nullptr;
9
'EltTy' initialized to a null pointer value
2558 if (ParseType(EltTy)) return true;
10
Calling 'LLParser::ParseType'
2559
2560 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2561 "expected end of sequential type"))
2562 return true;
2563
2564 if (isVector) {
2565 if (Size == 0)
2566 return Error(SizeLoc, "zero element vector is illegal");
2567 if ((unsigned)Size != Size)
2568 return Error(SizeLoc, "size too large for vector");
2569 if (!VectorType::isValidElementType(EltTy))
2570 return Error(TypeLoc, "invalid vector element type");
2571 Result = VectorType::get(EltTy, unsigned(Size));
2572 } else {
2573 if (!ArrayType::isValidElementType(EltTy))
2574 return Error(TypeLoc, "invalid array element type");
2575 Result = ArrayType::get(EltTy, Size);
2576 }
2577 return false;
2578}
2579
2580//===----------------------------------------------------------------------===//
2581// Function Semantic Analysis.
2582//===----------------------------------------------------------------------===//
2583
2584LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2585 int functionNumber)
2586 : P(p), F(f), FunctionNumber(functionNumber) {
2587
2588 // Insert unnamed arguments into the NumberedVals list.
2589 for (Argument &A : F.args())
2590 if (!A.hasName())
2591 NumberedVals.push_back(&A);
2592}
2593
2594LLParser::PerFunctionState::~PerFunctionState() {
2595 // If there were any forward referenced non-basicblock values, delete them.
2596
2597 for (const auto &P : ForwardRefVals) {
2598 if (isa<BasicBlock>(P.second.first))
2599 continue;
2600 P.second.first->replaceAllUsesWith(
2601 UndefValue::get(P.second.first->getType()));
2602 P.second.first->deleteValue();
2603 }
2604
2605 for (const auto &P : ForwardRefValIDs) {
2606 if (isa<BasicBlock>(P.second.first))
2607 continue;
2608 P.second.first->replaceAllUsesWith(
2609 UndefValue::get(P.second.first->getType()));
2610 P.second.first->deleteValue();
2611 }
2612}
2613
2614bool LLParser::PerFunctionState::FinishFunction() {
2615 if (!ForwardRefVals.empty())
2616 return P.Error(ForwardRefVals.begin()->second.second,
2617 "use of undefined value '%" + ForwardRefVals.begin()->first +
2618 "'");
2619 if (!ForwardRefValIDs.empty())
2620 return P.Error(ForwardRefValIDs.begin()->second.second,
2621 "use of undefined value '%" +
2622 Twine(ForwardRefValIDs.begin()->first) + "'");
2623 return false;
2624}
2625
2626static bool isValidVariableType(Module *M, Type *Ty, Value *Val, bool IsCall) {
2627 if (Val->getType() == Ty)
2628 return true;
2629 // For calls we also accept variables in the program address space
2630 if (IsCall && isa<PointerType>(Ty)) {
2631 Type *TyInProgAS = cast<PointerType>(Ty)->getElementType()->getPointerTo(
2632 M->getDataLayout().getProgramAddressSpace());
2633 if (Val->getType() == TyInProgAS)
2634 return true;
2635 }
2636 return false;
2637}
2638
2639/// GetVal - Get a value with the specified name or ID, creating a
2640/// forward reference record if needed. This can return null if the value
2641/// exists but does not have the right type.
2642Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2643 LocTy Loc, bool IsCall) {
2644 // Look this name up in the normal function symbol table.
2645 Value *Val = F.getValueSymbolTable()->lookup(Name);
2646
2647 // If this is a forward reference for the value, see if we already created a
2648 // forward ref record.
2649 if (!Val) {
2650 auto I = ForwardRefVals.find(Name);
2651 if (I != ForwardRefVals.end())
2652 Val = I->second.first;
2653 }
2654
2655 // If we have the value in the symbol table or fwd-ref table, return it.
2656 if (Val) {
2657 if (isValidVariableType(P.M, Ty, Val, IsCall))
2658 return Val;
2659 if (Ty->isLabelTy())
2660 P.Error(Loc, "'%" + Name + "' is not a basic block");
2661 else
2662 P.Error(Loc, "'%" + Name + "' defined with type '" +
2663 getTypeString(Val->getType()) + "'");
2664 return nullptr;
2665 }
2666
2667 // Don't make placeholders with invalid type.
2668 if (!Ty->isFirstClassType()) {
2669 P.Error(Loc, "invalid use of a non-first-class type");
2670 return nullptr;
2671 }
2672
2673 // Otherwise, create a new forward reference for this value and remember it.
2674 Value *FwdVal;
2675 if (Ty->isLabelTy()) {
2676 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2677 } else {
2678 FwdVal = new Argument(Ty, Name);
2679 }
2680
2681 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2682 return FwdVal;
2683}
2684
2685Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2686 bool IsCall) {
2687 // Look this name up in the normal function symbol table.
2688 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2689
2690 // If this is a forward reference for the value, see if we already created a
2691 // forward ref record.
2692 if (!Val) {
2693 auto I = ForwardRefValIDs.find(ID);
2694 if (I != ForwardRefValIDs.end())
2695 Val = I->second.first;
2696 }
2697
2698 // If we have the value in the symbol table or fwd-ref table, return it.
2699 if (Val) {
2700 if (isValidVariableType(P.M, Ty, Val, IsCall))
2701 return Val;
2702 if (Ty->isLabelTy())
2703 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2704 else
2705 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2706 getTypeString(Val->getType()) + "'");
2707 return nullptr;
2708 }
2709
2710 if (!Ty->isFirstClassType()) {
2711 P.Error(Loc, "invalid use of a non-first-class type");
2712 return nullptr;
2713 }
2714
2715 // Otherwise, create a new forward reference for this value and remember it.
2716 Value *FwdVal;
2717 if (Ty->isLabelTy()) {
2718 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2719 } else {
2720 FwdVal = new Argument(Ty);
2721 }
2722
2723 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2724 return FwdVal;
2725}
2726
2727/// SetInstName - After an instruction is parsed and inserted into its
2728/// basic block, this installs its name.
2729bool LLParser::PerFunctionState::SetInstName(int NameID,
2730 const std::string &NameStr,
2731 LocTy NameLoc, Instruction *Inst) {
2732 // If this instruction has void type, it cannot have a name or ID specified.
2733 if (Inst->getType()->isVoidTy()) {
2734 if (NameID != -1 || !NameStr.empty())
2735 return P.Error(NameLoc, "instructions returning void cannot have a name");
2736 return false;
2737 }
2738
2739 // If this was a numbered instruction, verify that the instruction is the
2740 // expected value and resolve any forward references.
2741 if (NameStr.empty()) {
2742 // If neither a name nor an ID was specified, just use the next ID.
2743 if (NameID == -1)
2744 NameID = NumberedVals.size();
2745
2746 if (unsigned(NameID) != NumberedVals.size())
2747 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2748 Twine(NumberedVals.size()) + "'");
2749
2750 auto FI = ForwardRefValIDs.find(NameID);
2751 if (FI != ForwardRefValIDs.end()) {
2752 Value *Sentinel = FI->second.first;
2753 if (Sentinel->getType() != Inst->getType())
2754 return P.Error(NameLoc, "instruction forward referenced with type '" +
2755 getTypeString(FI->second.first->getType()) + "'");
2756
2757 Sentinel->replaceAllUsesWith(Inst);
2758 Sentinel->deleteValue();
2759 ForwardRefValIDs.erase(FI);
2760 }
2761
2762 NumberedVals.push_back(Inst);
2763 return false;
2764 }
2765
2766 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2767 auto FI = ForwardRefVals.find(NameStr);
2768 if (FI != ForwardRefVals.end()) {
2769 Value *Sentinel = FI->second.first;
2770 if (Sentinel->getType() != Inst->getType())
2771 return P.Error(NameLoc, "instruction forward referenced with type '" +
2772 getTypeString(FI->second.first->getType()) + "'");
2773
2774 Sentinel->replaceAllUsesWith(Inst);
2775 Sentinel->deleteValue();
2776 ForwardRefVals.erase(FI);
2777 }
2778
2779 // Set the name on the instruction.
2780 Inst->setName(NameStr);
2781
2782 if (Inst->getName() != NameStr)
2783 return P.Error(NameLoc, "multiple definition of local value named '" +
2784 NameStr + "'");
2785 return false;
2786}
2787
2788/// GetBB - Get a basic block with the specified name or ID, creating a
2789/// forward reference record if needed.
2790BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2791 LocTy Loc) {
2792 return dyn_cast_or_null<BasicBlock>(
2793 GetVal(Name, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2794}
2795
2796BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2797 return dyn_cast_or_null<BasicBlock>(
2798 GetVal(ID, Type::getLabelTy(F.getContext()), Loc, /*IsCall=*/false));
2799}
2800
2801/// DefineBB - Define the specified basic block, which is either named or
2802/// unnamed. If there is an error, this returns null otherwise it returns
2803/// the block being defined.
2804BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2805 LocTy Loc) {
2806 BasicBlock *BB;
2807 if (Name.empty())
2808 BB = GetBB(NumberedVals.size(), Loc);
2809 else
2810 BB = GetBB(Name, Loc);
2811 if (!BB) return nullptr; // Already diagnosed error.
2812
2813 // Move the block to the end of the function. Forward ref'd blocks are
2814 // inserted wherever they happen to be referenced.
2815 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2816
2817 // Remove the block from forward ref sets.
2818 if (Name.empty()) {
2819 ForwardRefValIDs.erase(NumberedVals.size());
2820 NumberedVals.push_back(BB);
2821 } else {
2822 // BB forward references are already in the function symbol table.
2823 ForwardRefVals.erase(Name);
2824 }
2825
2826 return BB;
2827}
2828
2829//===----------------------------------------------------------------------===//
2830// Constants.
2831//===----------------------------------------------------------------------===//
2832
2833/// ParseValID - Parse an abstract value that doesn't necessarily have a
2834/// type implied. For example, if we parse "4" we don't know what integer type
2835/// it has. The value will later be combined with its type and checked for
2836/// sanity. PFS is used to convert function-local operands of metadata (since
2837/// metadata operands are not just parsed here but also converted to values).
2838/// PFS can be null when we are not parsing metadata values inside a function.
2839bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2840 ID.Loc = Lex.getLoc();
2841 switch (Lex.getKind()) {
2842 default: return TokError("expected value token");
2843 case lltok::GlobalID: // @42
2844 ID.UIntVal = Lex.getUIntVal();
2845 ID.Kind = ValID::t_GlobalID;
2846 break;
2847 case lltok::GlobalVar: // @foo
2848 ID.StrVal = Lex.getStrVal();
2849 ID.Kind = ValID::t_GlobalName;
2850 break;
2851 case lltok::LocalVarID: // %42
2852 ID.UIntVal = Lex.getUIntVal();
2853 ID.Kind = ValID::t_LocalID;
2854 break;
2855 case lltok::LocalVar: // %foo
2856 ID.StrVal = Lex.getStrVal();
2857 ID.Kind = ValID::t_LocalName;
2858 break;
2859 case lltok::APSInt:
2860 ID.APSIntVal = Lex.getAPSIntVal();
2861 ID.Kind = ValID::t_APSInt;
2862 break;
2863 case lltok::APFloat:
2864 ID.APFloatVal = Lex.getAPFloatVal();
2865 ID.Kind = ValID::t_APFloat;
2866 break;
2867 case lltok::kw_true:
2868 ID.ConstantVal = ConstantInt::getTrue(Context);
2869 ID.Kind = ValID::t_Constant;
2870 break;
2871 case lltok::kw_false:
2872 ID.ConstantVal = ConstantInt::getFalse(Context);
2873 ID.Kind = ValID::t_Constant;
2874 break;
2875 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2876 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2877 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2878 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2879
2880 case lltok::lbrace: {
2881 // ValID ::= '{' ConstVector '}'
2882 Lex.Lex();
2883 SmallVector<Constant*, 16> Elts;
2884 if (ParseGlobalValueVector(Elts) ||
2885 ParseToken(lltok::rbrace, "expected end of struct constant"))
2886 return true;
2887
2888 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2889 ID.UIntVal = Elts.size();
2890 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2891 Elts.size() * sizeof(Elts[0]));
2892 ID.Kind = ValID::t_ConstantStruct;
2893 return false;
2894 }
2895 case lltok::less: {
2896 // ValID ::= '<' ConstVector '>' --> Vector.
2897 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2898 Lex.Lex();
2899 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2900
2901 SmallVector<Constant*, 16> Elts;
2902 LocTy FirstEltLoc = Lex.getLoc();
2903 if (ParseGlobalValueVector(Elts) ||
2904 (isPackedStruct &&
2905 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2906 ParseToken(lltok::greater, "expected end of constant"))
2907 return true;
2908
2909 if (isPackedStruct) {
2910 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2911 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2912 Elts.size() * sizeof(Elts[0]));
2913 ID.UIntVal = Elts.size();
2914 ID.Kind = ValID::t_PackedConstantStruct;
2915 return false;
2916 }
2917
2918 if (Elts.empty())
2919 return Error(ID.Loc, "constant vector must not be empty");
2920
2921 if (!Elts[0]->getType()->isIntegerTy() &&
2922 !Elts[0]->getType()->isFloatingPointTy() &&
2923 !Elts[0]->getType()->isPointerTy())
2924 return Error(FirstEltLoc,
2925 "vector elements must have integer, pointer or floating point type");
2926
2927 // Verify that all the vector elements have the same type.
2928 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2929 if (Elts[i]->getType() != Elts[0]->getType())
2930 return Error(FirstEltLoc,
2931 "vector element #" + Twine(i) +
2932 " is not of type '" + getTypeString(Elts[0]->getType()));
2933
2934 ID.ConstantVal = ConstantVector::get(Elts);
2935 ID.Kind = ValID::t_Constant;
2936 return false;
2937 }
2938 case lltok::lsquare: { // Array Constant
2939 Lex.Lex();
2940 SmallVector<Constant*, 16> Elts;
2941 LocTy FirstEltLoc = Lex.getLoc();
2942 if (ParseGlobalValueVector(Elts) ||
2943 ParseToken(lltok::rsquare, "expected end of array constant"))
2944 return true;
2945
2946 // Handle empty element.
2947 if (Elts.empty()) {
2948 // Use undef instead of an array because it's inconvenient to determine
2949 // the element type at this point, there being no elements to examine.
2950 ID.Kind = ValID::t_EmptyArray;
2951 return false;
2952 }
2953
2954 if (!Elts[0]->getType()->isFirstClassType())
2955 return Error(FirstEltLoc, "invalid array element type: " +
2956 getTypeString(Elts[0]->getType()));
2957
2958 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2959
2960 // Verify all elements are correct type!
2961 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2962 if (Elts[i]->getType() != Elts[0]->getType())
2963 return Error(FirstEltLoc,
2964 "array element #" + Twine(i) +
2965 " is not of type '" + getTypeString(Elts[0]->getType()));
2966 }
2967
2968 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2969 ID.Kind = ValID::t_Constant;
2970 return false;
2971 }
2972 case lltok::kw_c: // c "foo"
2973 Lex.Lex();
2974 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2975 false);
2976 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2977 ID.Kind = ValID::t_Constant;
2978 return false;
2979
2980 case lltok::kw_asm: {
2981 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2982 // STRINGCONSTANT
2983 bool HasSideEffect, AlignStack, AsmDialect;
2984 Lex.Lex();
2985 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2986 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2987 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2988 ParseStringConstant(ID.StrVal) ||
2989 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2990 ParseToken(lltok::StringConstant, "expected constraint string"))
2991 return true;
2992 ID.StrVal2 = Lex.getStrVal();
2993 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2994 (unsigned(AsmDialect)<<2);
2995 ID.Kind = ValID::t_InlineAsm;
2996 return false;
2997 }
2998
2999 case lltok::kw_blockaddress: {
3000 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
3001 Lex.Lex();
3002
3003 ValID Fn, Label;
3004
3005 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
3006 ParseValID(Fn) ||
3007 ParseToken(lltok::comma, "expected comma in block address expression")||
3008 ParseValID(Label) ||
3009 ParseToken(lltok::rparen, "expected ')' in block address expression"))
3010 return true;
3011
3012 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
3013 return Error(Fn.Loc, "expected function name in blockaddress");
3014 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
3015 return Error(Label.Loc, "expected basic block name in blockaddress");
3016
3017 // Try to find the function (but skip it if it's forward-referenced).
3018 GlobalValue *GV = nullptr;
3019 if (Fn.Kind == ValID::t_GlobalID) {
3020 if (Fn.UIntVal < NumberedVals.size())
3021 GV = NumberedVals[Fn.UIntVal];
3022 } else if (!ForwardRefVals.count(Fn.StrVal)) {
3023 GV = M->getNamedValue(Fn.StrVal);
3024 }
3025 Function *F = nullptr;
3026 if (GV) {
3027 // Confirm that it's actually a function with a definition.
3028 if (!isa<Function>(GV))
3029 return Error(Fn.Loc, "expected function name in blockaddress");
3030 F = cast<Function>(GV);
3031 if (F->isDeclaration())
3032 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
3033 }
3034
3035 if (!F) {
3036 // Make a global variable as a placeholder for this reference.
3037 GlobalValue *&FwdRef =
3038 ForwardRefBlockAddresses.insert(std::make_pair(
3039 std::move(Fn),
3040 std::map<ValID, GlobalValue *>()))
3041 .first->second.insert(std::make_pair(std::move(Label), nullptr))
3042 .first->second;
3043 if (!FwdRef)
3044 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
3045 GlobalValue::InternalLinkage, nullptr, "");
3046 ID.ConstantVal = FwdRef;
3047 ID.Kind = ValID::t_Constant;
3048 return false;
3049 }
3050
3051 // We found the function; now find the basic block. Don't use PFS, since we
3052 // might be inside a constant expression.
3053 BasicBlock *BB;
3054 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
3055 if (Label.Kind == ValID::t_LocalID)
3056 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
3057 else
3058 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
3059 if (!BB)
3060 return Error(Label.Loc, "referenced value is not a basic block");
3061 } else {
3062 if (Label.Kind == ValID::t_LocalID)
3063 return Error(Label.Loc, "cannot take address of numeric label after "
3064 "the function is defined");
3065 BB = dyn_cast_or_null<BasicBlock>(
3066 F->getValueSymbolTable()->lookup(Label.StrVal));
3067 if (!BB)
3068 return Error(Label.Loc, "referenced value is not a basic block");
3069 }
3070
3071 ID.ConstantVal = BlockAddress::get(F, BB);
3072 ID.Kind = ValID::t_Constant;
3073 return false;
3074 }
3075
3076 case lltok::kw_trunc:
3077 case lltok::kw_zext:
3078 case lltok::kw_sext:
3079 case lltok::kw_fptrunc:
3080 case lltok::kw_fpext:
3081 case lltok::kw_bitcast:
3082 case lltok::kw_addrspacecast:
3083 case lltok::kw_uitofp:
3084 case lltok::kw_sitofp:
3085 case lltok::kw_fptoui:
3086 case lltok::kw_fptosi:
3087 case lltok::kw_inttoptr:
3088 case lltok::kw_ptrtoint: {
3089 unsigned Opc = Lex.getUIntVal();
3090 Type *DestTy = nullptr;
3091 Constant *SrcVal;
3092 Lex.Lex();
3093 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
3094 ParseGlobalTypeAndValue(SrcVal) ||
3095 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
3096 ParseType(DestTy) ||
3097 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
3098 return true;
3099 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
3100 return Error(ID.Loc, "invalid cast opcode for cast from '" +
3101 getTypeString(SrcVal->getType()) + "' to '" +
3102 getTypeString(DestTy) + "'");
3103 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
3104 SrcVal, DestTy);
3105 ID.Kind = ValID::t_Constant;
3106 return false;
3107 }
3108 case lltok::kw_extractvalue: {
3109 Lex.Lex();
3110 Constant *Val;
3111 SmallVector<unsigned, 4> Indices;
3112 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
3113 ParseGlobalTypeAndValue(Val) ||
3114 ParseIndexList(Indices) ||
3115 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
3116 return true;
3117
3118 if (!Val->getType()->isAggregateType())
3119 return Error(ID.Loc, "extractvalue operand must be aggregate type");
3120 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3121 return Error(ID.Loc, "invalid indices for extractvalue");
3122 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
3123 ID.Kind = ValID::t_Constant;
3124 return false;
3125 }
3126 case lltok::kw_insertvalue: {
3127 Lex.Lex();
3128 Constant *Val0, *Val1;
3129 SmallVector<unsigned, 4> Indices;
3130 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3131 ParseGlobalTypeAndValue(Val0) ||
3132 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3133 ParseGlobalTypeAndValue(Val1) ||
3134 ParseIndexList(Indices) ||
3135 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3136 return true;
3137 if (!Val0->getType()->isAggregateType())
3138 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3139 Type *IndexedType =
3140 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3141 if (!IndexedType)
3142 return Error(ID.Loc, "invalid indices for insertvalue");
3143 if (IndexedType != Val1->getType())
3144 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3145 getTypeString(Val1->getType()) +
3146 "' instead of '" + getTypeString(IndexedType) +
3147 "'");
3148 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3149 ID.Kind = ValID::t_Constant;
3150 return false;
3151 }
3152 case lltok::kw_icmp:
3153 case lltok::kw_fcmp: {
3154 unsigned PredVal, Opc = Lex.getUIntVal();
3155 Constant *Val0, *Val1;
3156 Lex.Lex();
3157 if (ParseCmpPredicate(PredVal, Opc) ||
3158 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3159 ParseGlobalTypeAndValue(Val0) ||
3160 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3161 ParseGlobalTypeAndValue(Val1) ||
3162 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3163 return true;
3164
3165 if (Val0->getType() != Val1->getType())
3166 return Error(ID.Loc, "compare operands must have the same type");
3167
3168 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3169
3170 if (Opc == Instruction::FCmp) {
3171 if (!Val0->getType()->isFPOrFPVectorTy())
3172 return Error(ID.Loc, "fcmp requires floating point operands");
3173 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3174 } else {
3175 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3175, __extension__ __PRETTY_FUNCTION__))
;
3176 if (!Val0->getType()->isIntOrIntVectorTy() &&
3177 !Val0->getType()->isPtrOrPtrVectorTy())
3178 return Error(ID.Loc, "icmp requires pointer or integer operands");
3179 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3180 }
3181 ID.Kind = ValID::t_Constant;
3182 return false;
3183 }
3184
3185 // Binary Operators.
3186 case lltok::kw_add:
3187 case lltok::kw_fadd:
3188 case lltok::kw_sub:
3189 case lltok::kw_fsub:
3190 case lltok::kw_mul:
3191 case lltok::kw_fmul:
3192 case lltok::kw_udiv:
3193 case lltok::kw_sdiv:
3194 case lltok::kw_fdiv:
3195 case lltok::kw_urem:
3196 case lltok::kw_srem:
3197 case lltok::kw_frem:
3198 case lltok::kw_shl:
3199 case lltok::kw_lshr:
3200 case lltok::kw_ashr: {
3201 bool NUW = false;
3202 bool NSW = false;
3203 bool Exact = false;
3204 unsigned Opc = Lex.getUIntVal();
3205 Constant *Val0, *Val1;
3206 Lex.Lex();
3207 LocTy ModifierLoc = Lex.getLoc();
3208 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3209 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3210 if (EatIfPresent(lltok::kw_nuw))
3211 NUW = true;
3212 if (EatIfPresent(lltok::kw_nsw)) {
3213 NSW = true;
3214 if (EatIfPresent(lltok::kw_nuw))
3215 NUW = true;
3216 }
3217 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3218 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3219 if (EatIfPresent(lltok::kw_exact))
3220 Exact = true;
3221 }
3222 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3223 ParseGlobalTypeAndValue(Val0) ||
3224 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3225 ParseGlobalTypeAndValue(Val1) ||
3226 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3227 return true;
3228 if (Val0->getType() != Val1->getType())
3229 return Error(ID.Loc, "operands of constexpr must have same type");
3230 if (!Val0->getType()->isIntOrIntVectorTy()) {
3231 if (NUW)
3232 return Error(ModifierLoc, "nuw only applies to integer operations");
3233 if (NSW)
3234 return Error(ModifierLoc, "nsw only applies to integer operations");
3235 }
3236 // Check that the type is valid for the operator.
3237 switch (Opc) {
3238 case Instruction::Add:
3239 case Instruction::Sub:
3240 case Instruction::Mul:
3241 case Instruction::UDiv:
3242 case Instruction::SDiv:
3243 case Instruction::URem:
3244 case Instruction::SRem:
3245 case Instruction::Shl:
3246 case Instruction::AShr:
3247 case Instruction::LShr:
3248 if (!Val0->getType()->isIntOrIntVectorTy())
3249 return Error(ID.Loc, "constexpr requires integer operands");
3250 break;
3251 case Instruction::FAdd:
3252 case Instruction::FSub:
3253 case Instruction::FMul:
3254 case Instruction::FDiv:
3255 case Instruction::FRem:
3256 if (!Val0->getType()->isFPOrFPVectorTy())
3257 return Error(ID.Loc, "constexpr requires fp operands");
3258 break;
3259 default: llvm_unreachable("Unknown binary operator!")::llvm::llvm_unreachable_internal("Unknown binary operator!",
"/build/llvm-toolchain-snapshot-7~svn329677/lib/AsmParser/LLParser.cpp"
, 3259)
;
3260 }
3261 unsigned Flags = 0;
3262 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3263 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3264 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3265 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3266 ID.ConstantVal = C;
3267 ID.Kind = ValID::t_Constant;
3268 return false;
3269 }
3270
3271 // Logical Operations
3272 case lltok::kw_and:
3273 case lltok::kw_or:
3274 case lltok::kw_xor: {
3275 unsigned Opc = Lex.getUIntVal();
3276 Constant *Val0, *Val1;
3277 Lex.Lex();
3278 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3279 ParseGlobalTypeAndValue(Val0) ||
3280 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3281 ParseGlobalTypeAndValue(Val1) ||
3282 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3283 return true;
3284 if (Val0->getType() != Val1->getType())
3285 return Error(ID.Loc, "operands of constexpr must have same type");
3286 if (!Val0->getType()->isIntOrIntVectorTy())
3287 return Error(ID.Loc,
3288 "constexpr requires integer or integer vector operands");
3289 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3290 ID.Kind = ValID::t_Constant;
3291 return false;
3292 }
3293
3294 case lltok::kw_getelementptr:
3295 case lltok::kw_shufflevector:
3296 case lltok::kw_insertelement:
3297 case lltok::kw_extractelement:
3298 case lltok::kw_select: {
3299 unsigned Opc = Lex.getUIntVal();
3300 SmallVector<Constant*, 16> Elts;
3301 bool InBounds = false;
3302 Type *Ty;
3303 Lex.Lex();
3304
3305 if (Opc == Instruction::GetElementPtr)
3306 InBounds = EatIfPresent(lltok::kw_inbounds);
3307
3308 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3309 return true;
3310
3311 LocTy ExplicitTypeLoc = Lex.getLoc();
3312 if (Opc == Instruction::GetElementPtr) {
3313 if (ParseType(Ty) ||
3314 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3315 return true;
3316 }
3317
3318 Optional<unsigned> InRangeOp;
3319 if (ParseGlobalValueVector(
3320 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3321 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3322 return true;
3323
3324 if (Opc == Instruction::GetElementPtr) {
3325 if (Elts.size() == 0 ||
3326 !Elts[0]->getType()->isPtrOrPtrVectorTy())
3327 return Error(ID.Loc, "base of getelementptr must be a pointer");
3328
3329 Type *BaseType = Elts[0]->getType();
3330 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3331 if (Ty != BasePointerType->getElementType())
3332 return Error(
3333 ExplicitTypeLoc,
3334 "explicit pointee type doesn't match operand's pointee type");
3335
3336 unsigned GEPWidth =
3337 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3338
3339 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3340 for (Constant *Val : Indices) {
3341 Type *ValTy = Val->getType();
3342 if (!ValTy->isIntOrIntVectorTy())
3343 return Error(ID.Loc, "getelementptr index must be an integer");
3344 if (ValTy->isVectorTy()) {
3345 unsigned ValNumEl = ValTy->getVectorNumElements();
3346 if (GEPWidth && (ValNumEl != GEPWidth))
3347 return Error(
3348 ID.Loc,
3349 "getelementptr vector index has a wrong number of elements");
3350 // GEPWidth may have been unknown because the base is a scalar,
3351 // but it is known now.
3352 GEPWidth = ValNumEl;
3353 }
3354 }
3355
3356 SmallPtrSet<Type*, 4> Visited;
3357 if (!Indices.empty() && !Ty->isSized(&Visited))
3358 return Error(ID.Loc, "base element of getelementptr must be sized");
3359
3360 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3361 return Error(ID.Loc, "invalid getelementptr indices");
3362
3363 if (InRangeOp) {
3364 if (*InRangeOp == 0)
3365 return Error(ID.Loc,
3366 "inrange keyword may not appear on pointer operand");
3367 --*InRangeOp;
3368 }
3369
3370 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3371 InBounds, InRangeOp);
3372 } else if (Opc == Instruction::Select) {
3373 if (Elts.size() != 3)
3374 return Error(ID.Loc, "expected three operands to select");
3375 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3376 Elts[2]))
3377 return Error(ID.Loc, Reason);
3378 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3379 } else if (Opc == Instruction::ShuffleVector) {
3380 if (Elts.size() != 3)
3381 return Error(ID.Loc, "expected three operands to shufflevector");
3382 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3383 return Error(ID.Loc, "invalid operands to shufflevector");
3384 ID.ConstantVal =
3385 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3386 } else if (Opc == Instruction::ExtractElement) {
3387 if (Elts.size() != 2)
3388 return Error(ID.Loc, "expected two operands to extractelement");
3389 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3390 return Error(ID.Loc, "invalid extractelement operands");
3391 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3392 } else {
3393 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3393, __extension__ __PRETTY_FUNCTION__))
;
3394 if (Elts.size() != 3)
3395 return Error(ID.Loc, "expected three operands to insertelement");
3396 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3397 return Error(ID.Loc, "invalid insertelement operands");
3398 ID.ConstantVal =
3399 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3400 }
3401
3402 ID.Kind = ValID::t_Constant;
3403 return false;
3404 }
3405 }
3406
3407 Lex.Lex();
3408 return false;
3409}
3410
3411/// ParseGlobalValue - Parse a global value with the specified type.
3412bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3413 C = nullptr;
3414 ValID ID;
3415 Value *V = nullptr;
3416 bool Parsed = ParseValID(ID) ||
3417 ConvertValIDToValue(Ty, ID, V, nullptr, /*IsCall=*/false);
3418 if (V && !(C = dyn_cast<Constant>(V)))
3419 return Error(ID.Loc, "global values must be constants");
3420 return Parsed;
3421}
3422
3423bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3424 Type *Ty = nullptr;
3425 return ParseType(Ty) ||
3426 ParseGlobalValue(Ty, V);
3427}
3428
3429bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3430 C = nullptr;
3431
3432 LocTy KwLoc = Lex.getLoc();
3433 if (!EatIfPresent(lltok::kw_comdat))
3434 return false;
3435
3436 if (EatIfPresent(lltok::lparen)) {
3437 if (Lex.getKind() != lltok::ComdatVar)
3438 return TokError("expected comdat variable");
3439 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3440 Lex.Lex();
3441 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3442 return true;
3443 } else {
3444 if (GlobalName.empty())
3445 return TokError("comdat cannot be unnamed");
3446 C = getComdat(GlobalName, KwLoc);
3447 }
3448
3449 return false;
3450}
3451
3452/// ParseGlobalValueVector
3453/// ::= /*empty*/
3454/// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3455bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3456 Optional<unsigned> *InRangeOp) {
3457 // Empty list.
3458 if (Lex.getKind() == lltok::rbrace ||
3459 Lex.getKind() == lltok::rsquare ||
3460 Lex.getKind() == lltok::greater ||
3461 Lex.getKind() == lltok::rparen)
3462 return false;
3463
3464 do {
3465 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3466 *InRangeOp = Elts.size();
3467
3468 Constant *C;
3469 if (ParseGlobalTypeAndValue(C)) return true;
3470 Elts.push_back(C);
3471 } while (EatIfPresent(lltok::comma));
3472
3473 return false;
3474}
3475
3476bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3477 SmallVector<Metadata *, 16> Elts;
3478 if (ParseMDNodeVector(Elts))
3479 return true;
3480
3481 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3482 return false;
3483}
3484
3485/// MDNode:
3486/// ::= !{ ... }
3487/// ::= !7
3488/// ::= !DILocation(...)
3489bool LLParser::ParseMDNode(MDNode *&N) {
3490 if (Lex.getKind() == lltok::MetadataVar)
3491 return ParseSpecializedMDNode(N);
3492
3493 return ParseToken(lltok::exclaim, "expected '!' here") ||
3494 ParseMDNodeTail(N);
3495}
3496
3497bool LLParser::ParseMDNodeTail(MDNode *&N) {
3498 // !{ ... }
3499 if (Lex.getKind() == lltok::lbrace)
3500 return ParseMDTuple(N);
3501
3502 // !42
3503 return ParseMDNodeID(N);
3504}
3505
3506namespace {
3507
3508/// Structure to represent an optional metadata field.
3509template <class FieldTy> struct MDFieldImpl {
3510 typedef MDFieldImpl ImplTy;
3511 FieldTy Val;
3512 bool Seen;
3513
3514 void assign(FieldTy Val) {
3515 Seen = true;
3516 this->Val = std::move(Val);
3517 }
3518
3519 explicit MDFieldImpl(FieldTy Default)
3520 : Val(std::move(Default)), Seen(false) {}
3521};
3522
3523/// Structure to represent an optional metadata field that
3524/// can be of either type (A or B) and encapsulates the
3525/// MD<typeofA>Field and MD<typeofB>Field structs, so not
3526/// to reimplement the specifics for representing each Field.
3527template <class FieldTypeA, class FieldTypeB> struct MDEitherFieldImpl {
3528 typedef MDEitherFieldImpl<FieldTypeA, FieldTypeB> ImplTy;
3529 FieldTypeA A;
3530 FieldTypeB B;
3531 bool Seen;
3532
3533 enum {
3534 IsInvalid = 0,
3535 IsTypeA = 1,
3536 IsTypeB = 2
3537 } WhatIs;
3538
3539 void assign(FieldTypeA A) {
3540 Seen = true;
3541 this->A = std::move(A);
3542 WhatIs = IsTypeA;
3543 }
3544
3545 void assign(FieldTypeB B) {
3546 Seen = true;
3547 this->B = std::move(B);
3548 WhatIs = IsTypeB;
3549 }
3550
3551 explicit MDEitherFieldImpl(FieldTypeA DefaultA, FieldTypeB DefaultB)
3552 : A(std::move(DefaultA)), B(std::move(DefaultB)), Seen(false),
3553 WhatIs(IsInvalid) {}
3554};
3555
3556struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3557 uint64_t Max;
3558
3559 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX(18446744073709551615UL))
3560 : ImplTy(Default), Max(Max) {}
3561};
3562
3563struct LineField : public MDUnsignedField {
3564 LineField() : MDUnsignedField(0, UINT32_MAX(4294967295U)) {}
3565};
3566
3567struct ColumnField : public MDUnsignedField {
3568 ColumnField() : MDUnsignedField(0, UINT16_MAX(65535)) {}
3569};
3570
3571struct DwarfTagField : public MDUnsignedField {
3572 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3573 DwarfTagField(dwarf::Tag DefaultTag)
3574 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3575};
3576
3577struct DwarfMacinfoTypeField : public MDUnsignedField {
3578 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3579 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3580 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3581};
3582
3583struct DwarfAttEncodingField : public MDUnsignedField {
3584 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3585};
3586
3587struct DwarfVirtualityField : public MDUnsignedField {
3588 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3589};
3590
3591struct DwarfLangField : public MDUnsignedField {
3592 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3593};
3594
3595struct DwarfCCField : public MDUnsignedField {
3596 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3597};
3598
3599struct EmissionKindField : public MDUnsignedField {
3600 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3601};
3602
3603struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3604 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3605};
3606
3607struct MDSignedField : public MDFieldImpl<int64_t> {
3608 int64_t Min;
3609 int64_t Max;
3610
3611 MDSignedField(int64_t Default = 0)
3612 : ImplTy(Default), Min(INT64_MIN(-9223372036854775807L -1)), Max(INT64_MAX(9223372036854775807L)) {}
3613 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3614 : ImplTy(Default), Min(Min), Max(Max) {}
3615};
3616
3617struct MDBoolField : public MDFieldImpl<bool> {
3618 MDBoolField(bool Default = false) : ImplTy(Default) {}
3619};
3620
3621struct MDField : public MDFieldImpl<Metadata *> {
3622 bool AllowNull;
3623
3624 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3625};
3626
3627struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3628 MDConstant() : ImplTy(nullptr) {}
3629};
3630
3631struct MDStringField : public MDFieldImpl<MDString *> {
3632 bool AllowEmpty;
3633 MDStringField(bool AllowEmpty = true)
3634 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3635};
3636
3637struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3638 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3639};
3640
3641struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3642 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3643};
3644
3645struct MDSignedOrMDField : MDEitherFieldImpl<MDSignedField, MDField> {
3646 MDSignedOrMDField(int64_t Default = 0, bool AllowNull = true)
3647 : ImplTy(MDSignedField(Default), MDField(AllowNull)) {}
3648
3649 MDSignedOrMDField(int64_t Default, int64_t Min, int64_t Max,
3650 bool AllowNull = true)
3651 : ImplTy(MDSignedField(Default, Min, Max), MDField(AllowNull)) {}
3652
3653 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3654 bool isMDField() const { return WhatIs == IsTypeB; }
3655 int64_t getMDSignedValue() const {
3656 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3656, __extension__ __PRETTY_FUNCTION__))
;
3657 return A.Val;
3658 }
3659 Metadata *getMDFieldValue() const {
3660 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3660, __extension__ __PRETTY_FUNCTION__))
;
3661 return B.Val;
3662 }
3663};
3664
3665struct MDSignedOrUnsignedField
3666 : MDEitherFieldImpl<MDSignedField, MDUnsignedField> {
3667 MDSignedOrUnsignedField() : ImplTy(MDSignedField(0), MDUnsignedField(0)) {}
3668
3669 bool isMDSignedField() const { return WhatIs == IsTypeA; }
3670 bool isMDUnsignedField() const { return WhatIs == IsTypeB; }
3671 int64_t getMDSignedValue() const {
3672 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3672, __extension__ __PRETTY_FUNCTION__))
;
3673 return A.Val;
3674 }
3675 uint64_t getMDUnsignedValue() const {
3676 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3676, __extension__ __PRETTY_FUNCTION__))
;
3677 return B.Val;
3678 }
3679};
3680
3681} // end anonymous namespace
3682
3683namespace llvm {
3684
3685template <>
3686bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3687 MDUnsignedField &Result) {
3688 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3689 return TokError("expected unsigned integer");
3690
3691 auto &U = Lex.getAPSIntVal();
3692 if (U.ugt(Result.Max))
3693 return TokError("value for '" + Name + "' too large, limit is " +
3694 Twine(Result.Max));
3695 Result.assign(U.getZExtValue());
3696 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3696, __extension__ __PRETTY_FUNCTION__))
;
3697 Lex.Lex();
3698 return false;
3699}
3700
3701template <>
3702bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3703 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3704}
3705template <>
3706bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3707 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3708}
3709
3710template <>
3711bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3712 if (Lex.getKind() == lltok::APSInt)
3713 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3714
3715 if (Lex.getKind() != lltok::DwarfTag)
3716 return TokError("expected DWARF tag");
3717
3718 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3719 if (Tag == dwarf::DW_TAG_invalid)
3720 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3721 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3721, __extension__ __PRETTY_FUNCTION__))
;
3722
3723 Result.assign(Tag);
3724 Lex.Lex();
3725 return false;
3726}
3727
3728template <>
3729bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3730 DwarfMacinfoTypeField &Result) {
3731 if (Lex.getKind() == lltok::APSInt)
3732 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3733
3734 if (Lex.getKind() != lltok::DwarfMacinfo)
3735 return TokError("expected DWARF macinfo type");
3736
3737 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3738 if (Macinfo == dwarf::DW_MACINFO_invalid)
3739 return TokError(
3740 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3741 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3741, __extension__ __PRETTY_FUNCTION__))
;
3742
3743 Result.assign(Macinfo);
3744 Lex.Lex();
3745 return false;
3746}
3747
3748template <>
3749bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3750 DwarfVirtualityField &Result) {
3751 if (Lex.getKind() == lltok::APSInt)
3752 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3753
3754 if (Lex.getKind() != lltok::DwarfVirtuality)
3755 return TokError("expected DWARF virtuality code");
3756
3757 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3758 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3759 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3760 Lex.getStrVal() + "'");
3761 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3761, __extension__ __PRETTY_FUNCTION__))
;
3762 Result.assign(Virtuality);
3763 Lex.Lex();
3764 return false;
3765}
3766
3767template <>
3768bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3769 if (Lex.getKind() == lltok::APSInt)
3770 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3771
3772 if (Lex.getKind() != lltok::DwarfLang)
3773 return TokError("expected DWARF language");
3774
3775 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3776 if (!Lang)
3777 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3778 "'");
3779 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3779, __extension__ __PRETTY_FUNCTION__))
;
3780 Result.assign(Lang);
3781 Lex.Lex();
3782 return false;
3783}
3784
3785template <>
3786bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3787 if (Lex.getKind() == lltok::APSInt)
3788 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3789
3790 if (Lex.getKind() != lltok::DwarfCC)
3791 return TokError("expected DWARF calling convention");
3792
3793 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3794 if (!CC)
3795 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3796 "'");
3797 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3797, __extension__ __PRETTY_FUNCTION__))
;
3798 Result.assign(CC);
3799 Lex.Lex();
3800 return false;
3801}
3802
3803template <>
3804bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3805 if (Lex.getKind() == lltok::APSInt)
3806 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3807
3808 if (Lex.getKind() != lltok::EmissionKind)
3809 return TokError("expected emission kind");
3810
3811 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3812 if (!Kind)
3813 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3814 "'");
3815 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3815, __extension__ __PRETTY_FUNCTION__))
;
3816 Result.assign(*Kind);
3817 Lex.Lex();
3818 return false;
3819}
3820
3821template <>
3822bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3823 DwarfAttEncodingField &Result) {
3824 if (Lex.getKind() == lltok::APSInt)
3825 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3826
3827 if (Lex.getKind() != lltok::DwarfAttEncoding)
3828 return TokError("expected DWARF type attribute encoding");
3829
3830 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3831 if (!Encoding)
3832 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3833 Lex.getStrVal() + "'");
3834 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3834, __extension__ __PRETTY_FUNCTION__))
;
3835 Result.assign(Encoding);
3836 Lex.Lex();
3837 return false;
3838}
3839
3840/// DIFlagField
3841/// ::= uint32
3842/// ::= DIFlagVector
3843/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3844template <>
3845bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3846
3847 // Parser for a single flag.
3848 auto parseFlag = [&](DINode::DIFlags &Val) {
3849 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3850 uint32_t TempVal = static_cast<uint32_t>(Val);
3851 bool Res = ParseUInt32(TempVal);
3852 Val = static_cast<DINode::DIFlags>(TempVal);
3853 return Res;
3854 }
3855
3856 if (Lex.getKind() != lltok::DIFlag)
3857 return TokError("expected debug info flag");
3858
3859 Val = DINode::getFlag(Lex.getStrVal());
3860 if (!Val)
3861 return TokError(Twine("invalid debug info flag flag '") +
3862 Lex.getStrVal() + "'");
3863 Lex.Lex();
3864 return false;
3865 };
3866
3867 // Parse the flags and combine them together.
3868 DINode::DIFlags Combined = DINode::FlagZero;
3869 do {
3870 DINode::DIFlags Val;
3871 if (parseFlag(Val))
3872 return true;
3873 Combined |= Val;
3874 } while (EatIfPresent(lltok::bar));
3875
3876 Result.assign(Combined);
3877 return false;
3878}
3879
3880template <>
3881bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3882 MDSignedField &Result) {
3883 if (Lex.getKind() != lltok::APSInt)
3884 return TokError("expected signed integer");
3885
3886 auto &S = Lex.getAPSIntVal();
3887 if (S < Result.Min)
3888 return TokError("value for '" + Name + "' too small, limit is " +
3889 Twine(Result.Min));
3890 if (S > Result.Max)
3891 return TokError("value for '" + Name + "' too large, limit is " +
3892 Twine(Result.Max));
3893 Result.assign(S.getExtValue());
3894 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3894, __extension__ __PRETTY_FUNCTION__))
;
3895 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~svn329677/lib/AsmParser/LLParser.cpp"
, 3895, __extension__ __PRETTY_FUNCTION__))
;
3896 Lex.Lex();
3897 return false;
3898}
3899
3900template <>
3901bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3902 switch (Lex.getKind()) {
3903 default:
3904 return TokError("expected 'true' or 'false'");
3905 case lltok::kw_true:
3906 Result.assign(true);
3907 break;
3908 case lltok::kw_false:
3909 Result.assign(false);
3910 break;
3911 }
3912 Lex.Lex();
3913 return false;
3914}
3915
3916template <>
3917bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3918 if (Lex.getKind() == lltok::kw_null) {
3919 if (!Result.AllowNull)
3920 return TokError("'" + Name + "' cannot be null");
3921 Lex.Lex();
3922 Result.assign(nullptr);
3923 return false;
3924 }
3925
3926 Metadata *MD;
3927 if (ParseMetadata(MD, nullptr))
3928 return true;
3929
3930 Result.assign(MD);
3931 return false;
3932}
3933
3934template <>
3935bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3936 MDSignedOrMDField &Result) {
3937 // Try to parse a signed int.
3938 if (Lex.getKind() == lltok::APSInt) {
3939 MDSignedField Res = Result.A;
3940 if (!ParseMDField(Loc, Name, Res)) {
3941 Result.assign(Res);
3942 return false;
3943 }
3944 return true;
3945 }
3946
3947 // Otherwise, try to parse as an MDField.
3948 MDField Res = Result.B;
3949 if (!ParseMDField(Loc, Name, Res)) {
3950 Result.assign(Res);
3951 return false;
3952 }
3953
3954 return true;
3955}
3956
3957template <>
3958bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3959 MDSignedOrUnsignedField &Result) {
3960 if (Lex.getKind() != lltok::APSInt)
3961 return false;
3962
3963 if (Lex.getAPSIntVal().isSigned()) {
3964 MDSignedField Res = Result.A;
3965 if (ParseMDField(Loc, Name, Res))
3966 return true;
3967 Result.assign(Res);
3968 return false;
3969 }
3970
3971 MDUnsignedField Res = Result.B;
3972 if (ParseMDField(Loc, Name, Res))
3973 return true;
3974 Result.assign(Res);
3975 return false;
3976}
3977
3978template <>
3979bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3980 LocTy ValueLoc = Lex.getLoc();
3981 std::string S;
3982 if (ParseStringConstant(S))
3983 return true;
3984
3985 if (!Result.AllowEmpty && S.empty())
3986 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3987
3988 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3989 return false;
3990}
3991
3992template <>
3993bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3994 SmallVector<Metadata *, 4> MDs;
3995 if (ParseMDNodeVector(MDs))
3996 return true;
3997
3998 Result.assign(std::move(MDs));
3999 return false;
4000}
4001
4002template <>
4003bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
4004 ChecksumKindField &Result) {
4005 Optional<DIFile::ChecksumKind> CSKind =
4006 DIFile::getChecksumKind(Lex.getStrVal());
4007
4008 if (Lex.getKind() != lltok::ChecksumKind || !CSKind)
4009 return TokError(
4010 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
4011
4012 Result.assign(*CSKind);
4013 Lex.Lex();
4014 return false;
4015}
4016
4017} // end namespace llvm
4018
4019template <class ParserTy>
4020bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
4021 do {
4022 if (Lex.getKind() != lltok::LabelStr)
4023 return TokError("expected field label here");
4024
4025 if (parseField())
4026 return true;
4027 } while (EatIfPresent(lltok::comma));
4028
4029 return false;
4030}
4031
4032template <class ParserTy>
4033bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
4034 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~svn329677/lib/AsmParser/LLParser.cpp"
, 4034, __extension__ __PRETTY_FUNCTION__))
;
4035 Lex.Lex();
4036
4037 if (ParseToken(lltok::lparen, "expected '(' here"))
4038 return true;
4039 if (Lex.getKind() != lltok::rparen)
4040 if (ParseMDFieldsImplBody(parseField))
4041 return true;
4042
4043 ClosingLoc = Lex.getLoc();
4044 return ParseToken(lltok::rparen, "expected ')' here");
4045}
4046
4047template <class FieldTy>
4048bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
4049 if (Result.Seen)
4050 return TokError("field '" + Name + "' cannot be specified more than once");
4051
4052 LocTy Loc = Lex.getLoc();
4053 Lex.Lex();
4054 return ParseMDField(Loc, Name, Result);
4055}
4056
4057bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
4058 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~svn329677/lib/AsmParser/LLParser.cpp"
, 4058, __extension__ __PRETTY_FUNCTION__))
;
4059
4060#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
4061 if (Lex.getStrVal() == #CLASS) \
4062 return Parse##CLASS(N, IsDistinct);
4063#include "llvm/IR/Metadata.def"
4064
4065 return TokError("expected metadata type");
4066}
4067
4068#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
4069#define NOP_FIELD(NAME, TYPE, INIT)
4070#define REQUIRE_FIELD(NAME, TYPE, INIT) \
4071 if (!NAME.Seen) \
4072 return Error(ClosingLoc, "missing required field '" #NAME "'");
4073#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
4074 if (Lex.getStrVal() == #NAME) \
4075 return ParseMDField(#NAME, NAME);
4076#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)
\
4077 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
4078 do { \
4079 LocTy ClosingLoc; \
4080 if (ParseMDFieldsImpl([&]() -> bool { \
4081 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
4082 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
4083 }, ClosingLoc)) \
4084 return true; \
4085 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
4086 } while (false)
4087#define GET_OR_DISTINCT(CLASS, ARGS)(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS) \
4088 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
4089
4090/// ParseDILocationFields:
4091/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
4092bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
4093#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4094 OPTIONAL(line, LineField, ); \
4095 OPTIONAL(column, ColumnField, ); \
4096 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4097 OPTIONAL(inlinedAt, MDField, );
4098 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)
;
4099#undef VISIT_MD_FIELDS
4100
4101 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))
4102 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))
;
4103 return false;
4104}
4105
4106/// ParseGenericDINode:
4107/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
4108bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
4109#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4110 REQUIRED(tag, DwarfTagField, ); \
4111 OPTIONAL(header, MDStringField, ); \
4112 OPTIONAL(operands, MDFieldList, );
4113 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)
;
4114#undef VISIT_MD_FIELDS
4115
4116 Result = GET_OR_DISTINCT(GenericDINode,(IsDistinct ? GenericDINode::getDistinct (Context, tag.Val, header
.Val, operands.Val) : GenericDINode::get (Context, tag.Val, header
.Val, operands.Val))
4117 (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))
;
4118 return false;
4119}
4120
4121/// ParseDISubrange:
4122/// ::= !DISubrange(count: 30, lowerBound: 2)
4123/// ::= !DISubrange(count: !node, lowerBound: 2)
4124bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
4125#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4126 REQUIRED(count, MDSignedOrMDField, (-1, -1, INT64_MAX(9223372036854775807L), false)); \
4127 OPTIONAL(lowerBound, MDSignedField, );
4128 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)
;
4129#undef VISIT_MD_FIELDS
4130
4131 if (count.isMDSignedField())
4132 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
4133 DISubrange, (Context, count.getMDSignedValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDSignedValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDSignedValue
(), lowerBound.Val))
;
4134 else if (count.isMDField())
4135 Result = GET_OR_DISTINCT((IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
4136 DISubrange, (Context, count.getMDFieldValue(), lowerBound.Val))(IsDistinct ? DISubrange::getDistinct (Context, count.getMDFieldValue
(), lowerBound.Val) : DISubrange::get (Context, count.getMDFieldValue
(), lowerBound.Val))
;
4137 else
4138 return true;
4139
4140 return false;
4141}
4142
4143/// ParseDIEnumerator:
4144/// ::= !DIEnumerator(value: 30, isUnsigned: true, name: "SomeKind")
4145bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
4146#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4147 REQUIRED(name, MDStringField, ); \
4148 REQUIRED(value, MDSignedOrUnsignedField, ); \
4149 OPTIONAL(isUnsigned, MDBoolField, (false));
4150 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)
;
4151#undef VISIT_MD_FIELDS
4152
4153 if (isUnsigned.Val && value.isMDSignedField())
4154 return TokError("unsigned enumerator with negative value");
4155
4156 int64_t Value = value.isMDSignedField()
4157 ? value.getMDSignedValue()
4158 : static_cast<int64_t>(value.getMDUnsignedValue());
4159 Result =
4160 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))
;
4161
4162 return false;
4163}
4164
4165/// ParseDIBasicType:
4166/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
4167bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
4168#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4169 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
4170 OPTIONAL(name, MDStringField, ); \
4171 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4172 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4173 OPTIONAL(encoding, DwarfAttEncodingField, );
4174 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4175#undef VISIT_MD_FIELDS
4176
4177 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
))
4178 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
))
;
4179 return false;
4180}
4181
4182/// ParseDIDerivedType:
4183/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
4184/// line: 7, scope: !1, baseType: !2, size: 32,
4185/// align: 32, offset: 0, flags: 0, extraData: !3,
4186/// dwarfAddressSpace: 3)
4187bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
4188#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4189 REQUIRED(tag, DwarfTagField, ); \
4190 OPTIONAL(name, MDStringField, ); \
4191 OPTIONAL(file, MDField, ); \
4192 OPTIONAL(line, LineField, ); \
4193 OPTIONAL(scope, MDField, ); \
4194 REQUIRED(baseType, MDField, ); \
4195 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4196 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4197 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4198 OPTIONAL(flags, DIFlagField, ); \
4199 OPTIONAL(extraData, MDField, ); \
4200 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX(4294967295U), UINT32_MAX(4294967295U)));
4201 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)
;
4202#undef VISIT_MD_FIELDS
4203
4204 Optional<unsigned> DWARFAddressSpace;
4205 if (dwarfAddressSpace.Val != UINT32_MAX(4294967295U))
4206 DWARFAddressSpace = dwarfAddressSpace.Val;
4207
4208 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))
4209 (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))
4210 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))
4211 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))
4212 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))
;
4213 return false;
4214}
4215
4216bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
4217#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4218 REQUIRED(tag, DwarfTagField, ); \
4219 OPTIONAL(name, MDStringField, ); \
4220 OPTIONAL(file, MDField, ); \
4221 OPTIONAL(line, LineField, ); \
4222 OPTIONAL(scope, MDField, ); \
4223 OPTIONAL(baseType, MDField, ); \
4224 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4225 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4226 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX(18446744073709551615UL))); \
4227 OPTIONAL(flags, DIFlagField, ); \
4228 OPTIONAL(elements, MDField, ); \
4229 OPTIONAL(runtimeLang, DwarfLangField, ); \
4230 OPTIONAL(vtableHolder, MDField, ); \
4231 OPTIONAL(templateParams, MDField, ); \
4232 OPTIONAL(identifier, MDStringField, ); \
4233 OPTIONAL(discriminator, MDField, );
4234 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)
;
4235#undef VISIT_MD_FIELDS
4236
4237 // If this has an identifier try to build an ODR type.
4238 if (identifier.Val)
4239 if (auto *CT = DICompositeType::buildODRType(
4240 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
4241 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
4242 elements.Val, runtimeLang.Val, vtableHolder.Val,
4243 templateParams.Val, discriminator.Val)) {
4244 Result = CT;
4245 return false;
4246 }
4247
4248 // Create a new node, and save it in the context if it belongs in the type
4249 // map.
4250 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))
4251 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))
4252 (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))
4253 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))
4254 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))
4255 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))
;
4256 return false;
4257}
4258
4259bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4260#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4261 OPTIONAL(flags, DIFlagField, ); \
4262 OPTIONAL(cc, DwarfCCField, ); \
4263 REQUIRED(types, MDField, );
4264 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)
;
4265#undef VISIT_MD_FIELDS
4266
4267 Result = GET_OR_DISTINCT(DISubroutineType,(IsDistinct ? DISubroutineType::getDistinct (Context, flags.Val
, cc.Val, types.Val) : DISubroutineType::get (Context, flags.
Val, cc.Val, types.Val))
4268 (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))
;
4269 return false;
4270}
4271
4272/// ParseDIFileType:
4273/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir",
4274/// checksumkind: CSK_MD5,
4275/// checksum: "000102030405060708090a0b0c0d0e0f",
4276/// source: "source file contents")
4277bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4278 // The default constructed value for checksumkind is required, but will never
4279 // be used, as the parser checks if the field was actually Seen before using
4280 // the Val.
4281#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4282 REQUIRED(filename, MDStringField, ); \
4283 REQUIRED(directory, MDStringField, ); \
4284 OPTIONAL(checksumkind, ChecksumKindField, (DIFile::CSK_MD5)); \
4285 OPTIONAL(checksum, MDStringField, ); \
4286 OPTIONAL(source, MDStringField, );
4287 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)
;
4288#undef VISIT_MD_FIELDS
4289
4290 Optional<DIFile::ChecksumInfo<MDString *>> OptChecksum;
4291 if (checksumkind.Seen && checksum.Seen)
4292 OptChecksum.emplace(checksumkind.Val, checksum.Val);
4293 else if (checksumkind.Seen || checksum.Seen)
4294 return Lex.Error("'checksumkind' and 'checksum' must be provided together");
4295
4296 Optional<MDString *> OptSource;
4297 if (source.Seen)
4298 OptSource = source.Val;
4299 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))
4300 OptChecksum, OptSource))(IsDistinct ? DIFile::getDistinct (Context, filename.Val, directory
.Val, OptChecksum, OptSource) : DIFile::get (Context, filename
.Val, directory.Val, OptChecksum, OptSource))
;
4301 return false;
4302}
4303
4304/// ParseDICompileUnit:
4305/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4306/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4307/// splitDebugFilename: "abc.debug",
4308/// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4309/// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4310bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4311 if (!IsDistinct)
4312 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4313
4314#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4315 REQUIRED(language, DwarfLangField, ); \
4316 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4317 OPTIONAL(producer, MDStringField, ); \
4318 OPTIONAL(isOptimized, MDBoolField, ); \
4319 OPTIONAL(flags, MDStringField, ); \
4320 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4321 OPTIONAL(splitDebugFilename, MDStringField, ); \
4322 OPTIONAL(emissionKind, EmissionKindField, ); \
4323 OPTIONAL(enums, MDField, ); \
4324 OPTIONAL(retainedTypes, MDField, ); \
4325 OPTIONAL(globals, MDField, ); \
4326 OPTIONAL(imports, MDField, ); \
4327 OPTIONAL(macros, MDField, ); \
4328 OPTIONAL(dwoId, MDUnsignedField, ); \
4329 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4330 OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
4331 OPTIONAL(gnuPubnames, MDBoolField, = false);
4332 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)
;
4333#undef VISIT_MD_FIELDS
4334
4335 Result = DICompileUnit::getDistinct(
4336 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4337 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4338 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4339 splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
4340 return false;
4341}
4342
4343/// ParseDISubprogram:
4344/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4345/// file: !1, line: 7, type: !2, isLocal: false,
4346/// isDefinition: true, scopeLine: 8, containingType: !3,
4347/// virtuality: DW_VIRTUALTIY_pure_virtual,
4348/// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4349/// isOptimized: false, templateParams: !4, declaration: !5,
4350/// variables: !6, thrownTypes: !7)
4351bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4352 auto Loc = Lex.getLoc();
4353#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4354 OPTIONAL(scope, MDField, ); \
4355 OPTIONAL(name, MDStringField, ); \
4356 OPTIONAL(linkageName, MDStringField, ); \
4357 OPTIONAL(file, MDField, ); \
4358 OPTIONAL(line, LineField, ); \
4359 OPTIONAL(type, MDField, ); \
4360 OPTIONAL(isLocal, MDBoolField, ); \
4361 OPTIONAL(isDefinition, MDBoolField, (true)); \
4362 OPTIONAL(scopeLine, LineField, ); \
4363 OPTIONAL(containingType, MDField, ); \
4364 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4365 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4366 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN(-2147483647-1), INT32_MAX(2147483647))); \
4367 OPTIONAL(flags, DIFlagField, ); \
4368 OPTIONAL(isOptimized, MDBoolField, ); \
4369 OPTIONAL(unit, MDField, ); \
4370 OPTIONAL(templateParams, MDField, ); \
4371 OPTIONAL(declaration, MDField, ); \
4372 OPTIONAL(variables, MDField, ); \
4373 OPTIONAL(thrownTypes, MDField, );
4374 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)
;
4375#undef VISIT_MD_FIELDS
4376
4377 if (isDefinition.Val && !IsDistinct)
4378 return Lex.Error(
4379 Loc,
4380 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4381
4382 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))
4383 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))
4384 (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))
4385 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))
4386 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))
4387 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))
4388 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))
;
4389 return false;
4390}
4391
4392/// ParseDILexicalBlock:
4393/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4394bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4395#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4396 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4397 OPTIONAL(file, MDField, ); \
4398 OPTIONAL(line, LineField, ); \
4399 OPTIONAL(column, ColumnField, );
4400 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)
;
4401#undef VISIT_MD_FIELDS
4402
4403 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))
4404 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))
;
4405 return false;
4406}
4407
4408/// ParseDILexicalBlockFile:
4409/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4410bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4411#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4412 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4413 OPTIONAL(file, MDField, ); \
4414 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4415 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)
;
4416#undef VISIT_MD_FIELDS
4417
4418 Result = GET_OR_DISTINCT(DILexicalBlockFile,(IsDistinct ? DILexicalBlockFile::getDistinct (Context, scope
.Val, file.Val, discriminator.Val) : DILexicalBlockFile::get (
Context, scope.Val, file.Val, discriminator.Val))
4419 (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))
;
4420 return false;
4421}
4422
4423/// ParseDINamespace:
4424/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4425bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4426#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4427 REQUIRED(scope, MDField, ); \
4428 OPTIONAL(name, MDStringField, ); \
4429 OPTIONAL(exportSymbols, MDBoolField, );
4430 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4431#undef VISIT_MD_FIELDS
4432
4433 Result = GET_OR_DISTINCT(DINamespace,(IsDistinct ? DINamespace::getDistinct (Context, scope.Val, name
.Val, exportSymbols.Val) : DINamespace::get (Context, scope.Val
, name.Val, exportSymbols.Val))
4434 (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))
;
4435 return false;
4436}
4437
4438/// ParseDIMacro:
4439/// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4440bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4441#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4442 REQUIRED(type, DwarfMacinfoTypeField, ); \
4443 OPTIONAL(line, LineField, ); \
4444 REQUIRED(name, MDStringField, ); \
4445 OPTIONAL(value, MDStringField, );
4446 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)
;
4447#undef VISIT_MD_FIELDS
4448
4449 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))
4450 (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))
;
4451 return false;
4452}
4453
4454/// ParseDIMacroFile:
4455/// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4456bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4457#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4458 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4459 OPTIONAL(line, LineField, ); \
4460 REQUIRED(file, MDField, ); \
4461 OPTIONAL(nodes, MDField, );
4462 PARSE_MD_FIELDS()VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) do { LocTy ClosingLoc
; if (ParseMDFieldsImpl([&]() -> bool { VISIT_MD_FIELDS
(PARSE_MD_FIELD, PARSE_MD_FIELD) return TokError(Twine("invalid field '"
) + Lex.getStrVal() + "'"); }, ClosingLoc)) return true; VISIT_MD_FIELDS
(NOP_FIELD, REQUIRE_FIELD) } while (false)
;
4463#undef VISIT_MD_FIELDS
4464
4465 Result = 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))
4466 (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))
;
4467 return false;
4468}
4469
4470/// ParseDIModule:
4471/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4472/// includePath: "/usr/include", isysroot: "/")
4473bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4474#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4475 REQUIRED(scope, MDField, ); \
4476 REQUIRED(name, MDStringField, ); \
4477 OPTIONAL(configMacros, MDStringField, ); \
4478 OPTIONAL(includePath, MDStringField, ); \
4479 OPTIONAL(isysroot, MDStringField, );
4480 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)
;
4481#undef VISIT_MD_FIELDS
4482
4483 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))
4484 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))
;
4485 return false;
4486}
4487
4488/// ParseDITemplateTypeParameter:
4489/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4490bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4491#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4492 OPTIONAL(name, MDStringField, ); \
4493 REQUIRED(type, MDField, );
4494 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)
;
4495#undef VISIT_MD_FIELDS
4496
4497 Result =
4498 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val))(IsDistinct ? DITemplateTypeParameter::getDistinct (Context, name
.Val, type.Val) : DITemplateTypeParameter::get (Context, name
.Val, type.Val))
;
4499 return false;
4500}
4501
4502/// ParseDITemplateValueParameter:
4503/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4504/// name: "V", type: !1, value: i32 7)
4505bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4506#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4507 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4508 OPTIONAL(name, MDStringField, ); \
4509 OPTIONAL(type, MDField, ); \
4510 REQUIRED(value, MDField, );
4511 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)
;
4512#undef VISIT_MD_FIELDS
4513
4514 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))
4515 (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))
;
4516 return false;
4517}
4518
4519/// ParseDIGlobalVariable:
4520/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4521/// file: !1, line: 7, type: !2, isLocal: false,
4522/// isDefinition: true, declaration: !3, align: 8)
4523bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4524#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4525 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4526 OPTIONAL(scope, MDField, ); \
4527 OPTIONAL(linkageName, MDStringField, ); \
4528 OPTIONAL(file, MDField, ); \
4529 OPTIONAL(line, LineField, ); \
4530 OPTIONAL(type, MDField, ); \
4531 OPTIONAL(isLocal, MDBoolField, ); \
4532 OPTIONAL(isDefinition, MDBoolField, (true)); \
4533 OPTIONAL(declaration, MDField, ); \
4534 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4535 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)
;
4536#undef VISIT_MD_FIELDS
4537
4538 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))
4539 (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))
4540 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))
4541 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))
;
4542 return false;
4543}
4544
4545/// ParseDILocalVariable:
4546/// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4547/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4548/// align: 8)
4549/// ::= !DILocalVariable(scope: !0, name: "foo",
4550/// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4551/// align: 8)
4552bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4553#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4554 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4555 OPTIONAL(name, MDStringField, ); \
4556 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX(65535))); \
4557 OPTIONAL(file, MDField, ); \
4558 OPTIONAL(line, LineField, ); \
4559 OPTIONAL(type, MDField, ); \
4560 OPTIONAL(flags, DIFlagField, ); \
4561 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX(4294967295U)));
4562 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)
;
4563#undef VISIT_MD_FIELDS
4564
4565 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))
4566 (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))
4567 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))
;
4568 return false;
4569}
4570
4571/// ParseDIExpression:
4572/// ::= !DIExpression(0, 7, -1)
4573bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4574 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~svn329677/lib/AsmParser/LLParser.cpp"
, 4574, __extension__ __PRETTY_FUNCTION__))
;
4575 Lex.Lex();
4576
4577 if (ParseToken(lltok::lparen, "expected '(' here"))
4578 return true;
4579
4580 SmallVector<uint64_t, 8> Elements;
4581 if (Lex.getKind() != lltok::rparen)
4582 do {
4583 if (Lex.getKind() == lltok::DwarfOp) {
4584 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4585 Lex.Lex();
4586 Elements.push_back(Op);
4587 continue;
4588 }
4589 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4590 }
4591
4592 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4593 return TokError("expected unsigned integer");
4594
4595 auto &U = Lex.getAPSIntVal();
4596 if (U.ugt(UINT64_MAX(18446744073709551615UL)))
4597 return TokError("element too large, limit is " + Twine(UINT64_MAX(18446744073709551615UL)));
4598 Elements.push_back(U.getZExtValue());
4599 Lex.Lex();
4600 } while (EatIfPresent(lltok::comma));
4601
4602 if (ParseToken(lltok::rparen, "expected ')' here"))
4603 return true;
4604
4605 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements))(IsDistinct ? DIExpression::getDistinct (Context, Elements) :
DIExpression::get (Context, Elements))
;
4606 return false;
4607}
4608
4609/// ParseDIGlobalVariableExpression:
4610/// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4611bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4612 bool IsDistinct) {
4613#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4614 REQUIRED(var, MDField, ); \
4615 REQUIRED(expr, MDField, );
4616 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)
;
4617#undef VISIT_MD_FIELDS
4618
4619 Result =
4620 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val))(IsDistinct ? DIGlobalVariableExpression::getDistinct (Context
, var.Val, expr.Val) : DIGlobalVariableExpression::get (Context
, var.Val, expr.Val))
;
4621 return false;
4622}
4623
4624/// ParseDIObjCProperty:
4625/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4626/// getter: "getFoo", attributes: 7, type: !2)
4627bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4628#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4629 OPTIONAL(name, MDStringField, ); \
4630 OPTIONAL(file, MDField, ); \
4631 OPTIONAL(line, LineField, ); \
4632 OPTIONAL(setter, MDStringField, ); \
4633 OPTIONAL(getter, MDStringField, ); \
4634 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX(4294967295U))); \
4635 OPTIONAL(type, MDField, );
4636 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)
;
4637#undef VISIT_MD_FIELDS
4638
4639 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))
4640 (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))
4641 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))
;
4642 return false;
4643}
4644
4645/// ParseDIImportedEntity:
4646/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4647/// line: 7, name: "foo")
4648bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4649#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4650 REQUIRED(tag, DwarfTagField, ); \
4651 REQUIRED(scope, MDField, ); \
4652 OPTIONAL(entity, MDField, ); \
4653 OPTIONAL(file, MDField, ); \
4654 OPTIONAL(line, LineField, ); \
4655 OPTIONAL(name, MDStringField, );
4656 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)
;
4657#undef VISIT_MD_FIELDS
4658
4659 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))
4660 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))
4661 (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))
;
4662 return false;
4663}
4664
4665#undef PARSE_MD_FIELD
4666#undef NOP_FIELD
4667#undef REQUIRE_FIELD
4668#undef DECLARE_FIELD
4669
4670/// ParseMetadataAsValue
4671/// ::= metadata i32 %local
4672/// ::= metadata i32 @global
4673/// ::= metadata i32 7
4674/// ::= metadata !0
4675/// ::= metadata !{...}
4676/// ::= metadata !"string"
4677bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4678 // Note: the type 'metadata' has already been parsed.
4679 Metadata *MD;
4680 if (ParseMetadata(MD, &PFS))
4681 return true;
4682
4683 V = MetadataAsValue::get(Context, MD);
4684 return false;
4685}
4686
4687/// ParseValueAsMetadata
4688/// ::= i32 %local
4689/// ::= i32 @global
4690/// ::= i32 7
4691bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4692 PerFunctionState *PFS) {
4693 Type *Ty;
4694 LocTy Loc;
4695 if (ParseType(Ty, TypeMsg, Loc))
4696 return true;
4697 if (Ty->isMetadataTy())
4698 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4699
4700 Value *V;
4701 if (ParseValue(Ty, V, PFS))
4702 return true;
4703
4704 MD = ValueAsMetadata::get(V);
4705 return false;
4706}
4707
4708/// ParseMetadata
4709/// ::= i32 %local
4710/// ::= i32 @global
4711/// ::= i32 7
4712/// ::= !42
4713/// ::= !{...}
4714/// ::= !"string"
4715/// ::= !DILocation(...)
4716bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4717 if (Lex.getKind() == lltok::MetadataVar) {
4718 MDNode *N;
4719 if (ParseSpecializedMDNode(N))
4720 return true;
4721 MD = N;
4722 return false;
4723 }
4724
4725 // ValueAsMetadata:
4726 // <type> <value>
4727 if (Lex.getKind() != lltok::exclaim)
4728 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4729
4730 // '!'.
4731 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~svn329677/lib/AsmParser/LLParser.cpp"
, 4731, __extension__ __PRETTY_FUNCTION__))
;
4732 Lex.Lex();
4733
4734 // MDString:
4735 // ::= '!' STRINGCONSTANT
4736 if (Lex.getKind() == lltok::StringConstant) {
4737 MDString *S;
4738 if (ParseMDString(S))
4739 return true;
4740 MD = S;
4741 return false;
4742 }
4743
4744 // MDNode:
4745 // !{ ... }
4746 // !7
4747 MDNode *N;
4748 if (ParseMDNodeTail(N))
4749 return true;
4750 MD = N;
4751 return false;
4752}
4753
4754//===----------------------------------------------------------------------===//
4755// Function Parsing.
4756//===----------------------------------------------------------------------===//
4757
4758bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4759 PerFunctionState *PFS, bool IsCall) {
4760 if (Ty->isFunctionTy())
4761 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4762
4763 switch (ID.Kind) {
4764 case ValID::t_LocalID:
4765 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4766 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, IsCall);
4767 return V == nullptr;
4768 case ValID::t_LocalName:
4769 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4770 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, IsCall);
4771 return V == nullptr;
4772 case ValID::t_InlineAsm: {
4773 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4774 return Error(ID.Loc, "invalid type for inline asm constraint string");
4775 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4776 (ID.UIntVal >> 1) & 1,
4777 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4778 return false;
4779 }
4780 case ValID::t_GlobalName:
4781 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4782 return V == nullptr;
4783 case ValID::t_GlobalID:
4784 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4785 return V == nullptr;
4786 case ValID::t_APSInt:
4787 if (!Ty->isIntegerTy())
4788 return Error(ID.Loc, "integer constant must have integer type");
4789 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4790 V = ConstantInt::get(Context, ID.APSIntVal);
4791 return false;
4792 case ValID::t_APFloat:
4793 if (!Ty->isFloatingPointTy() ||
4794 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4795 return Error(ID.Loc, "floating point constant invalid for type");
4796
4797 // The lexer has no type info, so builds all half, float, and double FP
4798 // constants as double. Fix this here. Long double does not need this.
4799 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4800 bool Ignored;
4801 if (Ty->isHalfTy())
4802 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4803 &Ignored);
4804 else if (Ty->isFloatTy())
4805 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4806 &Ignored);
4807 }
4808 V = ConstantFP::get(Context, ID.APFloatVal);
4809
4810 if (V->getType() != Ty)
4811 return Error(ID.Loc, "floating point constant does not have type '" +
4812 getTypeString(Ty) + "'");
4813
4814 return false;
4815 case ValID::t_Null:
4816 if (!Ty->isPointerTy())
4817 return Error(ID.Loc, "null must be a pointer type");
4818 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4819 return false;
4820 case ValID::t_Undef:
4821 // FIXME: LabelTy should not be a first-class type.
4822 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4823 return Error(ID.Loc, "invalid type for undef constant");
4824 V = UndefValue::get(Ty);
4825 return false;
4826 case ValID::t_EmptyArray:
4827 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4828 return Error(ID.Loc, "invalid empty array initializer");
4829 V = UndefValue::get(Ty);
4830 return false;
4831 case ValID::t_Zero:
4832 // FIXME: LabelTy should not be a first-class type.
4833 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4834 return Error(ID.Loc, "invalid type for null constant");
4835 V = Constant::getNullValue(Ty);
4836 return false;
4837 case ValID::t_None:
4838 if (!Ty->isTokenTy())
4839 return Error(ID.Loc, "invalid type for none constant");
4840 V = Constant::getNullValue(Ty);
4841 return false;
4842 case ValID::t_Constant:
4843 if (ID.ConstantVal->getType() != Ty)
4844 return Error(ID.Loc, "constant expression type mismatch");
4845
4846 V = ID.ConstantVal;
4847 return false;
4848 case ValID::t_ConstantStruct:
4849 case ValID::t_PackedConstantStruct:
4850 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4851 if (ST->getNumElements() != ID.UIntVal)
4852 return Error(ID.Loc,
4853 "initializer with struct type has wrong # elements");
4854 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4855 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4856
4857 // Verify that the elements are compatible with the structtype.
4858 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4859 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4860 return Error(ID.Loc, "element " + Twine(i) +
4861 " of struct initializer doesn't match struct element type");
4862
4863 V = ConstantStruct::get(
4864 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4865 } else
4866 return Error(ID.Loc, "constant expression type mismatch");
4867 return false;
4868 }
4869 llvm_unreachable("Invalid ValID")::llvm::llvm_unreachable_internal("Invalid ValID", "/build/llvm-toolchain-snapshot-7~svn329677/lib/AsmParser/LLParser.cpp"
, 4869)
;
4870}
4871
4872bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4873 C = nullptr;
4874 ValID ID;
4875 auto Loc = Lex.getLoc();
4876 if (ParseValID(ID, /*PFS=*/nullptr))
4877 return true;
4878 switch (ID.Kind) {
4879 case ValID::t_APSInt:
4880 case ValID::t_APFloat:
4881 case ValID::t_Undef:
4882 case ValID::t_Constant:
4883 case ValID::t_ConstantStruct:
4884 case ValID::t_PackedConstantStruct: {
4885 Value *V;
4886 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr, /*IsCall=*/false))
4887 return true;
4888 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~svn329677/lib/AsmParser/LLParser.cpp"
, 4888, __extension__ __PRETTY_FUNCTION__))
;
4889 C = cast<Constant>(V);
4890 return false;
4891 }
4892 case ValID::t_Null:
4893 C = Constant::getNullValue(Ty);
4894 return false;
4895 default:
4896 return Error(Loc, "expected a constant value");
4897 }
4898}
4899
4900bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4901 V = nullptr;
4902 ValID ID;
4903 return ParseValID(ID, PFS) ||
4904 ConvertValIDToValue(Ty, ID, V, PFS, /*IsCall=*/false);
4905}
4906
4907bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4908 Type *Ty = nullptr;
4909 return ParseType(Ty) ||
4910 ParseValue(Ty, V, PFS);
4911}
4912
4913bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4914 PerFunctionState &PFS) {
4915 Value *V;
4916 Loc = Lex.getLoc();
4917 if (ParseTypeAndValue(V, PFS)) return true;
4918 if (!isa<BasicBlock>(V))
4919 return Error(Loc, "expected a basic block");
4920 BB = cast<BasicBlock>(V);
4921 return false;
4922}
4923
4924/// FunctionHeader
4925/// ::= OptionalLinkage OptionalPreemptionSpecifier OptionalVisibility
4926/// OptionalCallingConv OptRetAttrs OptUnnamedAddr Type GlobalName
4927/// '(' ArgList ')' OptFuncAttrs OptSection OptionalAlign OptGC
4928/// OptionalPrefix OptionalPrologue OptPersonalityFn
4929bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4930 // Parse the linkage.
4931 LocTy LinkageLoc = Lex.getLoc();
4932 unsigned Linkage;
4933 unsigned Visibility;
4934 unsigned DLLStorageClass;
4935 bool DSOLocal;
4936 AttrBuilder RetAttrs;
4937 unsigned CC;
4938 bool HasLinkage;
4939 Type *RetType = nullptr;
4940 LocTy RetTypeLoc = Lex.getLoc();
4941 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass,
4942 DSOLocal) ||
4943 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4944 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4945 return true;
4946
4947 // Verify that the linkage is ok.
4948 switch ((GlobalValue::LinkageTypes)Linkage) {
4949 case GlobalValue::ExternalLinkage:
4950 break; // always ok.
4951 case GlobalValue::ExternalWeakLinkage:
4952 if (isDefine)
4953 return Error(LinkageLoc, "invalid linkage for function definition");
4954 break;
4955 case GlobalValue::PrivateLinkage:
4956 case GlobalValue::InternalLinkage:
4957 case GlobalValue::AvailableExternallyLinkage:
4958 case GlobalValue::LinkOnceAnyLinkage:
4959 case GlobalValue::LinkOnceODRLinkage:
4960 case GlobalValue::WeakAnyLinkage:
4961 case GlobalValue::WeakODRLinkage:
4962 if (!isDefine)
4963 return Error(LinkageLoc, "invalid linkage for function declaration");
4964 break;
4965 case GlobalValue::AppendingLinkage:
4966 case GlobalValue::CommonLinkage:
4967 return Error(LinkageLoc, "invalid function linkage type");
4968 }
4969
4970 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4971 return Error(LinkageLoc,
4972 "symbol with local linkage must have default visibility");
4973
4974 if (!FunctionType::isValidReturnType(RetType))
4975 return Error(RetTypeLoc, "invalid function return type");
4976
4977 LocTy NameLoc = Lex.getLoc();
4978
4979 std::string FunctionName;
4980 if (Lex.getKind() == lltok::GlobalVar) {
4981 FunctionName = Lex.getStrVal();
4982 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4983 unsigned NameID = Lex.getUIntVal();
4984
4985 if (NameID != NumberedVals.size())
4986 return TokError("function expected to be numbered '%" +
4987 Twine(NumberedVals.size()) + "'");
4988 } else {
4989 return TokError("expected function name");
4990 }
4991
4992 Lex.Lex();
4993
4994 if (Lex.getKind() != lltok::lparen)
4995 return TokError("expected '(' in function argument list");
4996
4997 SmallVector<ArgInfo, 8> ArgList;
4998 bool isVarArg;
4999 AttrBuilder FuncAttrs;
5000 std::vector<unsigned> FwdRefAttrGrps;
5001 LocTy BuiltinLoc;
5002 std::string Section;
5003 unsigned Alignment;
5004 std::string GC;
5005 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
5006 Constant *Prefix = nullptr;
5007 Constant *Prologue = nullptr;
5008 Constant *PersonalityFn = nullptr;
5009 Comdat *C;
5010
5011 if (ParseArgumentList(ArgList, isVarArg) ||
5012 ParseOptionalUnnamedAddr(UnnamedAddr) ||
5013 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
5014 BuiltinLoc) ||
5015 (EatIfPresent(lltok::kw_section) &&
5016 ParseStringConstant(Section)) ||
5017 parseOptionalComdat(FunctionName, C) ||
5018 ParseOptionalAlignment(Alignment) ||
5019 (EatIfPresent(lltok::kw_gc) &&
5020 ParseStringConstant(GC)) ||
5021 (EatIfPresent(lltok::kw_prefix) &&
5022 ParseGlobalTypeAndValue(Prefix)) ||
5023 (EatIfPresent(lltok::kw_prologue) &&
5024 ParseGlobalTypeAndValue(Prologue)) ||
5025 (EatIfPresent(lltok::kw_personality) &&
5026 ParseGlobalTypeAndValue(PersonalityFn)))
5027 return true;
5028
5029 if (FuncAttrs.contains(Attribute::Builtin))
5030 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
5031
5032 // If the alignment was parsed as an attribute, move to the alignment field.
5033 if (FuncAttrs.hasAlignmentAttr()) {
5034 Alignment = FuncAttrs.getAlignment();
5035 FuncAttrs.removeAttribute(Attribute::Alignment);
5036 }
5037
5038 // Okay, if we got here, the function is syntactically valid. Convert types
5039 // and do semantic checks.
5040 std::vector<Type*> ParamTypeList;
5041 SmallVector<AttributeSet, 8> Attrs;
5042
5043 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5044 ParamTypeList.push_back(ArgList[i].Ty);
5045 Attrs.push_back(ArgList[i].Attrs);
5046 }
5047
5048 AttributeList PAL =
5049 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
5050 AttributeSet::get(Context, RetAttrs), Attrs);
5051
5052 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
5053 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
5054
5055 FunctionType *FT =
5056 FunctionType::get(RetType, ParamTypeList, isVarArg);
5057 PointerType *PFT = PointerType::getUnqual(FT);
5058
5059 Fn = nullptr;
5060 if (!FunctionName.empty()) {
5061 // If this was a definition of a forward reference, remove the definition
5062 // from the forward reference table and fill in the forward ref.
5063 auto FRVI = ForwardRefVals.find(FunctionName);
5064 if (FRVI != ForwardRefVals.end()) {
5065 Fn = M->getFunction(FunctionName);
5066 if (!Fn)
5067 return Error(FRVI->second.second, "invalid forward reference to "
5068 "function as global value!");
5069 if (Fn->getType() != PFT)
5070 return Error(FRVI->second.second, "invalid forward reference to "
5071 "function '" + FunctionName + "' with wrong type!");
5072
5073 ForwardRefVals.erase(FRVI);
5074 } else if ((Fn = M->getFunction(FunctionName))) {
5075 // Reject redefinitions.
5076 return Error(NameLoc, "invalid redefinition of function '" +
5077 FunctionName + "'");
5078 } else if (M->getNamedValue(FunctionName)) {
5079 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
5080 }
5081
5082 } else {
5083 // If this is a definition of a forward referenced function, make sure the
5084 // types agree.
5085 auto I = ForwardRefValIDs.find(NumberedVals.size());
5086 if (I != ForwardRefValIDs.end()) {
5087 Fn = cast<Function>(I->second.first);
5088 if (Fn->getType() != PFT)
5089 return Error(NameLoc, "type of definition and forward reference of '@" +
5090 Twine(NumberedVals.size()) + "' disagree");
5091 ForwardRefValIDs.erase(I);
5092 }
5093 }
5094
5095 if (!Fn)
5096 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
5097 else // Move the forward-reference to the correct spot in the module.
5098 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
5099
5100 if (FunctionName.empty())
5101 NumberedVals.push_back(Fn);
5102
5103 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
5104 maybeSetDSOLocal(DSOLocal, *Fn);
5105 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
5106 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
5107 Fn->setCallingConv(CC);
5108 Fn->setAttributes(PAL);
5109 Fn->setUnnamedAddr(UnnamedAddr);
5110 Fn->setAlignment(Alignment);
5111 Fn->setSection(Section);
5112 Fn->setComdat(C);
5113 Fn->setPersonalityFn(PersonalityFn);
5114 if (!GC.empty()) Fn->setGC(GC);
5115 Fn->setPrefixData(Prefix);
5116 Fn->setPrologueData(Prologue);
5117 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
5118
5119 // Add all of the arguments we parsed to the function.
5120 Function::arg_iterator ArgIt = Fn->arg_begin();
5121 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
5122 // If the argument has a name, insert it into the argument symbol table.
5123 if (ArgList[i].Name.empty()) continue;
5124
5125 // Set the name, if it conflicted, it will be auto-renamed.
5126 ArgIt->setName(ArgList[i].Name);
5127
5128 if (ArgIt->getName() != ArgList[i].Name)
5129 return Error(ArgList[i].Loc, "redefinition of argument '%" +
5130 ArgList[i].Name + "'");
5131 }
5132
5133 if (isDefine)
5134 return false;
5135
5136 // Check the declaration has no block address forward references.
5137 ValID ID;
5138 if (FunctionName.empty()) {
5139 ID.Kind = ValID::t_GlobalID;
5140 ID.UIntVal = NumberedVals.size() - 1;
5141 } else {
5142 ID.Kind = ValID::t_GlobalName;
5143 ID.StrVal = FunctionName;
5144 }
5145 auto Blocks = ForwardRefBlockAddresses.find(ID);
5146 if (Blocks != ForwardRefBlockAddresses.end())
5147 return Error(Blocks->first.Loc,
5148 "cannot take blockaddress inside a declaration");
5149 return false;
5150}
5151
5152bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
5153 ValID ID;
5154 if (FunctionNumber == -1) {
5155 ID.Kind = ValID::t_GlobalName;
5156 ID.StrVal = F.getName();
5157 } else {
5158 ID.Kind = ValID::t_GlobalID;
5159 ID.UIntVal = FunctionNumber;
5160 }
5161
5162 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
5163 if (Blocks == P.ForwardRefBlockAddresses.end())
5164 return false;
5165
5166 for (const auto &I : Blocks->second) {
5167 const ValID &BBID = I.first;
5168 GlobalValue *GV = I.second;
5169
5170 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~svn329677/lib/AsmParser/LLParser.cpp"
, 5171, __extension__ __PRETTY_FUNCTION__))
5171 "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~svn329677/lib/AsmParser/LLParser.cpp"
, 5171, __extension__ __PRETTY_FUNCTION__))
;
5172 BasicBlock *BB;
5173 if (BBID.Kind == ValID::t_LocalName)
5174 BB = GetBB(BBID.StrVal, BBID.Loc);
5175 else
5176 BB = GetBB(BBID.UIntVal, BBID.Loc);
5177 if (!BB)
5178 return P.Error(BBID.Loc, "referenced value is not a basic block");
5179
5180 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
5181 GV->eraseFromParent();
5182 }
5183
5184 P.ForwardRefBlockAddresses.erase(Blocks);
5185 return false;
5186}
5187
5188/// ParseFunctionBody
5189/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
5190bool LLParser::ParseFunctionBody(Function &Fn) {
5191 if (Lex.getKind() != lltok::lbrace)
5192 return TokError("expected '{' in function body");
5193 Lex.Lex(); // eat the {.
5194
5195 int FunctionNumber = -1;
5196 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
5197
5198 PerFunctionState PFS(*this, Fn, FunctionNumber);
5199
5200 // Resolve block addresses and allow basic blocks to be forward-declared
5201 // within this function.
5202 if (PFS.resolveForwardRefBlockAddresses())
5203 return true;
5204 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
5205
5206 // We need at least one basic block.
5207 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
5208 return TokError("function body requires at least one basic block");
5209
5210 while (Lex.getKind() != lltok::rbrace &&
5211 Lex.getKind() != lltok::kw_uselistorder)
5212 if (ParseBasicBlock(PFS)) return true;
5213
5214 while (Lex.getKind() != lltok::rbrace)
5215 if (ParseUseListOrder(&PFS))
5216 return true;
5217
5218 // Eat the }.
5219 Lex.Lex();
5220
5221 // Verify function is ok.
5222 return PFS.FinishFunction();
5223}
5224
5225/// ParseBasicBlock
5226/// ::= LabelStr? Instruction*
5227bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
5228 // If this basic block starts out with a name, remember it.
5229 std::string Name;
5230 LocTy NameLoc = Lex.getLoc();
5231 if (Lex.getKind() == lltok::LabelStr) {
5232 Name = Lex.getStrVal();
5233 Lex.Lex();
5234 }
5235
5236 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
5237 if (!BB)
5238 return Error(NameLoc,
5239 "unable to create block named '" + Name + "'");
5240
5241 std::string NameStr;
5242
5243 // Parse the instructions in this block until we get a terminator.
5244 Instruction *Inst;
5245 do {
5246 // This instruction may have three possibilities for a name: a) none
5247 // specified, b) name specified "%foo =", c) number specified: "%4 =".
5248 LocTy NameLoc = Lex.getLoc();
5249 int NameID = -1;
5250 NameStr = "";
5251
5252 if (Lex.getKind() == lltok::LocalVarID) {
5253 NameID = Lex.getUIntVal();
5254 Lex.Lex();
5255 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
5256 return true;
5257 } else if (Lex.getKind() == lltok::LocalVar) {
5258 NameStr = Lex.getStrVal();
5259 Lex.Lex();
5260 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
5261 return true;
5262 }
5263
5264 switch (ParseInstruction(Inst, BB, PFS)) {
5265 default: llvm_unreachable("Unknown ParseInstruction result!")::llvm::llvm_unreachable_internal("Unknown ParseInstruction result!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/AsmParser/LLParser.cpp"
, 5265)
;
5266 case InstError: return true;
5267 case InstNormal:
5268 BB->getInstList().push_back(Inst);
5269
5270 // With a normal result, we check to see if the instruction is followed by
5271 // a comma and metadata.
5272 if (EatIfPresent(lltok::comma))
5273 if (ParseInstructionMetadata(*Inst))
5274 return true;
5275 break;
5276 case InstExtraComma:
5277 BB->getInstList().push_back(Inst);
5278
5279 // If the instruction parser ate an extra comma at the end of it, it
5280 // *must* be followed by metadata.
5281 if (ParseInstructionMetadata(*Inst))
5282 return true;
5283 break;
5284 }
5285
5286 // Set the name on the instruction.
5287 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5288 } while (!isa<TerminatorInst>(Inst));
5289
5290 return false;
5291}
5292
5293//===----------------------------------------------------------------------===//
5294// Instruction Parsing.
5295//===----------------------------------------------------------------------===//
5296
5297/// ParseInstruction - Parse one of the many different instructions.
5298///
5299int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5300 PerFunctionState &PFS) {
5301 lltok::Kind Token = Lex.getKind();
5302 if (Token == lltok::Eof)
5303 return TokError("found end of file when expecting more instructions");
5304 LocTy Loc = Lex.getLoc();
5305 unsigned KeywordVal = Lex.getUIntVal();
5306 Lex.Lex(); // Eat the keyword.
5307
5308 switch (Token) {
5309 default: return Error(Loc, "expected instruction opcode");
5310 // Terminator Instructions.
5311 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5312 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5313 case lltok::kw_br: return ParseBr(Inst, PFS);
5314 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5315 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5316 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5317 case lltok::kw_resume: return ParseResume(Inst, PFS);
5318 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5319 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5320 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5321 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5322 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5323 // Binary Operators.
5324 case lltok::kw_add:
5325 case lltok::kw_sub:
5326 case lltok::kw_mul:
5327 case lltok::kw_shl: {
5328 bool NUW = EatIfPresent(lltok::kw_nuw);
5329 bool NSW = EatIfPresent(lltok::kw_nsw);
5330 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5331
5332 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5333
5334 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5335 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5336 return false;
5337 }
5338 case lltok::kw_fadd:
5339 case lltok::kw_fsub:
5340 case lltok::kw_fmul:
5341 case lltok::kw_fdiv:
5342 case lltok::kw_frem: {
5343 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5344 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5345 if (Res != 0)
5346 return Res;
5347 if (FMF.any())
5348 Inst->setFastMathFlags(FMF);
5349 return 0;
5350 }
5351
5352 case lltok::kw_sdiv:
5353 case lltok::kw_udiv:
5354 case lltok::kw_lshr:
5355 case lltok::kw_ashr: {
5356 bool Exact = EatIfPresent(lltok::kw_exact);
5357
5358 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5359 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5360 return false;
5361 }
5362
5363 case lltok::kw_urem:
5364 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5365 case lltok::kw_and:
5366 case lltok::kw_or:
5367 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5368 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5369 case lltok::kw_fcmp: {
5370 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5371 int Res = ParseCompare(Inst, PFS, KeywordVal);
5372 if (Res != 0)
5373 return Res;
5374 if (FMF.any())
5375 Inst->setFastMathFlags(FMF);
5376 return 0;
5377 }
5378
5379 // Casts.
5380 case lltok::kw_trunc:
5381 case lltok::kw_zext:
5382 case lltok::kw_sext:
5383 case lltok::kw_fptrunc:
5384 case lltok::kw_fpext:
5385 case lltok::kw_bitcast:
5386 case lltok::kw_addrspacecast:
5387 case lltok::kw_uitofp:
5388 case lltok::kw_sitofp:
5389 case lltok::kw_fptoui:
5390 case lltok::kw_fptosi:
5391 case lltok::kw_inttoptr:
5392 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5393 // Other.
5394 case lltok::kw_select: return ParseSelect(Inst, PFS);
5395 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5396 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5397 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5398 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5399 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5400 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5401 // Call.
5402 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5403 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5404 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5405 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5406 // Memory.
5407 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5408 case lltok::kw_load: return ParseLoad(Inst, PFS);
5409 case lltok::kw_store: return ParseStore(Inst, PFS);
5410 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5411 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5412 case lltok::kw_fence: return ParseFence(Inst, PFS);
5413 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5414 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5415 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5416 }
5417}
5418
5419/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5420bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5421 if (Opc == Instruction::FCmp) {
5422 switch (Lex.getKind()) {
5423 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5424 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5425 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5426 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5427 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5428 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5429 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5430 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5431 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5432 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5433 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5434 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5435 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5436 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5437 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5438 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5439 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5440 }
5441 } else {
5442 switch (Lex.getKind()) {
5443 default: return TokError("expected icmp predicate (e.g. 'eq')");
5444 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5445 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5446 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5447 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5448 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5449 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5450 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5451 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5452 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5453 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5454 }
5455 }
5456 Lex.Lex();
5457 return false;
5458}
5459
5460//===----------------------------------------------------------------------===//
5461// Terminator Instructions.
5462//===----------------------------------------------------------------------===//
5463
5464/// ParseRet - Parse a return instruction.
5465/// ::= 'ret' void (',' !dbg, !1)*
5466/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5467bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5468 PerFunctionState &PFS) {
5469 SMLoc TypeLoc = Lex.getLoc();
5470 Type *Ty = nullptr;
5471 if (ParseType(Ty, true /*void allowed*/)) return true;
5472
5473 Type *ResType = PFS.getFunction().getReturnType();
5474
5475 if (Ty->isVoidTy()) {
5476 if (!ResType->isVoidTy())
5477 return Error(TypeLoc, "value doesn't match function result type '" +
5478 getTypeString(ResType) + "'");
5479
5480 Inst = ReturnInst::Create(Context);
5481 return false;
5482 }
5483
5484 Value *RV;
5485 if (ParseValue(Ty, RV, PFS)) return true;
5486
5487 if (ResType != RV->getType())
5488 return Error(TypeLoc, "value doesn't match function result type '" +
5489 getTypeString(ResType) + "'");
5490
5491 Inst = ReturnInst::Create(Context, RV);
5492 return false;
5493}
5494
5495/// ParseBr
5496/// ::= 'br' TypeAndValue
5497/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5498bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5499 LocTy Loc, Loc2;
5500 Value *Op0;
5501 BasicBlock *Op1, *Op2;
5502 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5503
5504 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5505 Inst = BranchInst::Create(BB);
5506 return false;
5507 }
5508
5509 if (Op0->getType() != Type::getInt1Ty(Context))
5510 return Error(Loc, "branch condition must have 'i1' type");
5511
5512 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5513 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5514 ParseToken(lltok::comma, "expected ',' after true destination") ||
5515 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5516 return true;
5517
5518 Inst = BranchInst::Create(Op1, Op2, Op0);
5519 return false;
5520}
5521
5522/// ParseSwitch
5523/// Instruction
5524/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5525/// JumpTable
5526/// ::= (TypeAndValue ',' TypeAndValue)*
5527bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5528 LocTy CondLoc, BBLoc;
5529 Value *Cond;
5530 BasicBlock *DefaultBB;
5531 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5532 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5533 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5534 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5535 return true;
5536
5537 if (!Cond->getType()->isIntegerTy())
5538 return Error(CondLoc, "switch condition must have integer type");
5539
5540 // Parse the jump table pairs.
5541 SmallPtrSet<Value*, 32> SeenCases;
5542 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5543 while (Lex.getKind() != lltok::rsquare) {
5544 Value *Constant;
5545 BasicBlock *DestBB;
5546
5547 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5548 ParseToken(lltok::comma, "expected ',' after case value") ||
5549 ParseTypeAndBasicBlock(DestBB, PFS))
5550 return true;
5551
5552 if (!SeenCases.insert(Constant).second)
5553 return Error(CondLoc, "duplicate case value in switch");
5554 if (!isa<ConstantInt>(Constant))
5555 return Error(CondLoc, "case value is not a constant integer");
5556
5557 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5558 }
5559
5560 Lex.Lex(); // Eat the ']'.
5561
5562 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5563 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5564 SI->addCase(Table[i].first, Table[i].second);
5565 Inst = SI;
5566 return false;
5567}
5568
5569/// ParseIndirectBr
5570/// Instruction
5571/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5572bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5573 LocTy AddrLoc;
5574 Value *Address;
5575 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5576 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5577 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5578 return true;
5579
5580 if (!Address->getType()->isPointerTy())
5581 return Error(AddrLoc, "indirectbr address must have pointer type");
5582
5583 // Parse the destination list.
5584 SmallVector<BasicBlock*, 16> DestList;
5585
5586 if (Lex.getKind() != lltok::rsquare) {
5587 BasicBlock *DestBB;
5588 if (ParseTypeAndBasicBlock(DestBB, PFS))
5589 return true;
5590 DestList.push_back(DestBB);
5591
5592 while (EatIfPresent(lltok::comma)) {
5593 if (ParseTypeAndBasicBlock(DestBB, PFS))
5594 return true;
5595 DestList.push_back(DestBB);
5596 }
5597 }
5598
5599 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5600 return true;
5601
5602 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5603 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5604 IBI->addDestination(DestList[i]);
5605 Inst = IBI;
5606 return false;
5607}
5608
5609/// ParseInvoke
5610/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5611/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5612bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5613 LocTy CallLoc = Lex.getLoc();
5614 AttrBuilder RetAttrs, FnAttrs;
5615 std::vector<unsigned> FwdRefAttrGrps;
5616 LocTy NoBuiltinLoc;
5617 unsigned CC;
5618 Type *RetType = nullptr;
5619 LocTy RetTypeLoc;
5620 ValID CalleeID;
5621 SmallVector<ParamInfo, 16> ArgList;
5622 SmallVector<OperandBundleDef, 2> BundleList;
5623
5624 BasicBlock *NormalBB, *UnwindBB;
5625 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5626 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5627 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5628 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5629 NoBuiltinLoc) ||
5630 ParseOptionalOperandBundles(BundleList, PFS) ||
5631 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5632 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5633 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5634 ParseTypeAndBasicBlock(UnwindBB, PFS))
5635 return true;
5636
5637 // If RetType is a non-function pointer type, then this is the short syntax
5638 // for the call, which means that RetType is just the return type. Infer the
5639 // rest of the function argument types from the arguments that are present.
5640 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5641 if (!Ty) {
5642 // Pull out the types of all of the arguments...
5643 std::vector<Type*> ParamTypes;
5644 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5645 ParamTypes.push_back(ArgList[i].V->getType());
5646
5647 if (!FunctionType::isValidReturnType(RetType))
5648 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5649
5650 Ty = FunctionType::get(RetType, ParamTypes, false);
5651 }
5652
5653 CalleeID.FTy = Ty;
5654
5655 // Look up the callee.
5656 Value *Callee;
5657 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS,
5658 /*IsCall=*/true))
5659 return true;
5660
5661 // Set up the Attribute for the function.
5662 SmallVector<Value *, 8> Args;
5663 SmallVector<AttributeSet, 8> ArgAttrs;
5664
5665 // Loop through FunctionType's arguments and ensure they are specified
5666 // correctly. Also, gather any parameter attributes.
5667 FunctionType::param_iterator I = Ty->param_begin();
5668 FunctionType::param_iterator E = Ty->param_end();
5669 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5670 Type *ExpectedTy = nullptr;
5671 if (I != E) {
5672 ExpectedTy = *I++;
5673 } else if (!Ty->isVarArg()) {
5674 return Error(ArgList[i].Loc, "too many arguments specified");
5675 }
5676
5677 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5678 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5679 getTypeString(ExpectedTy) + "'");
5680 Args.push_back(ArgList[i].V);
5681 ArgAttrs.push_back(ArgList[i].Attrs);
5682 }
5683
5684 if (I != E)
5685 return Error(CallLoc, "not enough parameters specified for call");
5686
5687 if (FnAttrs.hasAlignmentAttr())
5688 return Error(CallLoc, "invoke instructions may not have an alignment");
5689
5690 // Finish off the Attribute and check them
5691 AttributeList PAL =
5692 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5693 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5694
5695 InvokeInst *II =
5696 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5697 II->setCallingConv(CC);
5698 II->setAttributes(PAL);
5699 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5700 Inst = II;
5701 return false;
5702}
5703
5704/// ParseResume
5705/// ::= 'resume' TypeAndValue
5706bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5707 Value *Exn; LocTy ExnLoc;
5708 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5709 return true;
5710
5711 ResumeInst *RI = ResumeInst::Create(Exn);
5712 Inst = RI;
5713 return false;
5714}
5715
5716bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5717 PerFunctionState &PFS) {
5718 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5719 return true;
5720
5721 while (Lex.getKind() != lltok::rsquare) {
5722 // If this isn't the first argument, we need a comma.
5723 if (!Args.empty() &&
5724 ParseToken(lltok::comma, "expected ',' in argument list"))
5725 return true;
5726
5727 // Parse the argument.
5728 LocTy ArgLoc;
5729 Type *ArgTy = nullptr;
5730 if (ParseType(ArgTy, ArgLoc))
5731 return true;
5732
5733 Value *V;
5734 if (ArgTy->isMetadataTy()) {
5735 if (ParseMetadataAsValue(V, PFS))
5736 return true;
5737 } else {
5738 if (ParseValue(ArgTy, V, PFS))
5739 return true;
5740 }
5741 Args.push_back(V);
5742 }
5743
5744 Lex.Lex(); // Lex the ']'.
5745 return false;
5746}
5747
5748/// ParseCleanupRet
5749/// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5750bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5751 Value *CleanupPad = nullptr;
5752
5753 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5754 return true;
5755
5756 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5757 return true;
5758
5759 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5760 return true;
5761
5762 BasicBlock *UnwindBB = nullptr;
5763 if (Lex.getKind() == lltok::kw_to) {
5764 Lex.Lex();
5765 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5766 return true;
5767 } else {
5768 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5769 return true;
5770 }
5771 }
5772
5773 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5774 return false;
5775}
5776
5777/// ParseCatchRet
5778/// ::= 'catchret' from Parent Value 'to' TypeAndValue
5779bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5780 Value *CatchPad = nullptr;
5781
5782 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5783 return true;
5784
5785 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5786 return true;
5787
5788 BasicBlock *BB;
5789 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5790 ParseTypeAndBasicBlock(BB, PFS))
5791 return true;
5792
5793 Inst = CatchReturnInst::Create(CatchPad, BB);
5794 return false;
5795}
5796
5797/// ParseCatchSwitch
5798/// ::= 'catchswitch' within Parent
5799bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5800 Value *ParentPad;
5801
5802 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5803 return true;
5804
5805 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5806 Lex.getKind() != lltok::LocalVarID)
5807 return TokError("expected scope value for catchswitch");
5808
5809 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5810 return true;
5811
5812 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5813 return true;
5814
5815 SmallVector<BasicBlock *, 32> Table;
5816 do {
5817 BasicBlock *DestBB;
5818