1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/AsmParser/SlotMapping.h"
18 #include "llvm/IR/AutoUpgrade.h"
19 #include "llvm/IR/CallingConv.h"
20 #include "llvm/IR/Constants.h"
21 #include "llvm/IR/DebugInfo.h"
22 #include "llvm/IR/DebugInfoMetadata.h"
23 #include "llvm/IR/DerivedTypes.h"
24 #include "llvm/IR/InlineAsm.h"
25 #include "llvm/IR/Instructions.h"
26 #include "llvm/IR/LLVMContext.h"
27 #include "llvm/IR/Module.h"
28 #include "llvm/IR/Operator.h"
29 #include "llvm/IR/ValueSymbolTable.h"
30 #include "llvm/Support/Dwarf.h"
31 #include "llvm/Support/ErrorHandling.h"
32 #include "llvm/Support/SaveAndRestore.h"
33 #include "llvm/Support/raw_ostream.h"
36 static std::string getTypeString(Type *T) {
38 raw_string_ostream Tmp(Result);
43 /// Run: module ::= toplevelentity*
44 bool LLParser::Run() {
48 return ParseTopLevelEntities() ||
49 ValidateEndOfModule();
52 bool LLParser::parseStandaloneConstantValue(Constant *&C,
53 const SlotMapping *Slots) {
54 restoreParsingState(Slots);
58 if (ParseType(Ty) || parseConstantValue(Ty, C))
60 if (Lex.getKind() != lltok::Eof)
61 return Error(Lex.getLoc(), "expected end of string");
65 void LLParser::restoreParsingState(const SlotMapping *Slots) {
68 NumberedVals = Slots->GlobalValues;
69 NumberedMetadata = Slots->MetadataNodes;
70 for (const auto &I : Slots->NamedTypes)
72 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
73 for (const auto &I : Slots->Types)
75 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
78 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
80 bool LLParser::ValidateEndOfModule() {
81 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
82 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
84 // Handle any function attribute group forward references.
85 for (std::map<Value*, std::vector<unsigned> >::iterator
86 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
89 std::vector<unsigned> &Vec = I->second;
92 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
94 B.merge(NumberedAttrBuilders[*VI]);
96 if (Function *Fn = dyn_cast<Function>(V)) {
97 AttributeSet AS = Fn->getAttributes();
98 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
99 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
100 AS.getFnAttributes());
104 // If the alignment was parsed as an attribute, move to the alignment
106 if (FnAttrs.hasAlignmentAttr()) {
107 Fn->setAlignment(FnAttrs.getAlignment());
108 FnAttrs.removeAttribute(Attribute::Alignment);
111 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
112 AttributeSet::get(Context,
113 AttributeSet::FunctionIndex,
115 Fn->setAttributes(AS);
116 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
117 AttributeSet AS = CI->getAttributes();
118 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
119 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
120 AS.getFnAttributes());
122 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
123 AttributeSet::get(Context,
124 AttributeSet::FunctionIndex,
126 CI->setAttributes(AS);
127 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
128 AttributeSet AS = II->getAttributes();
129 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
130 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
131 AS.getFnAttributes());
133 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
134 AttributeSet::get(Context,
135 AttributeSet::FunctionIndex,
137 II->setAttributes(AS);
139 llvm_unreachable("invalid object with forward attribute group reference");
143 // If there are entries in ForwardRefBlockAddresses at this point, the
144 // function was never defined.
145 if (!ForwardRefBlockAddresses.empty())
146 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
147 "expected function name in blockaddress");
149 for (const auto &NT : NumberedTypes)
150 if (NT.second.second.isValid())
151 return Error(NT.second.second,
152 "use of undefined type '%" + Twine(NT.first) + "'");
154 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
155 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
156 if (I->second.second.isValid())
157 return Error(I->second.second,
158 "use of undefined type named '" + I->getKey() + "'");
160 if (!ForwardRefComdats.empty())
161 return Error(ForwardRefComdats.begin()->second,
162 "use of undefined comdat '$" +
163 ForwardRefComdats.begin()->first + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
180 // Resolve metadata cycles.
181 for (auto &N : NumberedMetadata) {
182 if (N.second && !N.second->isResolved())
183 N.second->resolveCycles();
186 // Look for intrinsic functions and CallInst that need to be upgraded
187 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
188 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
190 UpgradeDebugInfo(*M);
194 // Initialize the slot mapping.
195 // Because by this point we've parsed and validated everything, we can "steal"
196 // the mapping from LLParser as it doesn't need it anymore.
197 Slots->GlobalValues = std::move(NumberedVals);
198 Slots->MetadataNodes = std::move(NumberedMetadata);
199 for (const auto &I : NamedTypes)
200 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
201 for (const auto &I : NumberedTypes)
202 Slots->Types.insert(std::make_pair(I.first, I.second.first));
207 //===----------------------------------------------------------------------===//
208 // Top-Level Entities
209 //===----------------------------------------------------------------------===//
211 bool LLParser::ParseTopLevelEntities() {
213 switch (Lex.getKind()) {
214 default: return TokError("expected top-level entity");
215 case lltok::Eof: return false;
216 case lltok::kw_declare: if (ParseDeclare()) return true; break;
217 case lltok::kw_define: if (ParseDefine()) return true; break;
218 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
219 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
220 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
221 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
222 case lltok::LocalVar: if (ParseNamedType()) return true; break;
223 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
224 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
225 case lltok::ComdatVar: if (parseComdat()) return true; break;
226 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
227 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
229 // The Global variable production with no name can have many different
230 // optional leading prefixes, the production is:
231 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
232 // OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
233 // ('constant'|'global') ...
234 case lltok::kw_private: // OptionalLinkage
235 case lltok::kw_internal: // OptionalLinkage
236 case lltok::kw_weak: // OptionalLinkage
237 case lltok::kw_weak_odr: // OptionalLinkage
238 case lltok::kw_linkonce: // OptionalLinkage
239 case lltok::kw_linkonce_odr: // OptionalLinkage
240 case lltok::kw_appending: // OptionalLinkage
241 case lltok::kw_common: // OptionalLinkage
242 case lltok::kw_extern_weak: // OptionalLinkage
243 case lltok::kw_external: // OptionalLinkage
244 case lltok::kw_default: // OptionalVisibility
245 case lltok::kw_hidden: // OptionalVisibility
246 case lltok::kw_protected: // OptionalVisibility
247 case lltok::kw_dllimport: // OptionalDLLStorageClass
248 case lltok::kw_dllexport: // OptionalDLLStorageClass
249 case lltok::kw_thread_local: // OptionalThreadLocal
250 case lltok::kw_addrspace: // OptionalAddrSpace
251 case lltok::kw_constant: // GlobalType
252 case lltok::kw_global: { // GlobalType
253 unsigned Linkage, Visibility, DLLStorageClass;
255 GlobalVariable::ThreadLocalMode TLM;
257 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
258 ParseOptionalVisibility(Visibility) ||
259 ParseOptionalDLLStorageClass(DLLStorageClass) ||
260 ParseOptionalThreadLocal(TLM) ||
261 parseOptionalUnnamedAddr(UnnamedAddr) ||
262 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
263 DLLStorageClass, TLM, UnnamedAddr))
268 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
269 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
270 case lltok::kw_uselistorder_bb:
271 if (ParseUseListOrderBB()) return true; break;
278 /// ::= 'module' 'asm' STRINGCONSTANT
279 bool LLParser::ParseModuleAsm() {
280 assert(Lex.getKind() == lltok::kw_module);
284 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
285 ParseStringConstant(AsmStr)) return true;
287 M->appendModuleInlineAsm(AsmStr);
292 /// ::= 'target' 'triple' '=' STRINGCONSTANT
293 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
294 bool LLParser::ParseTargetDefinition() {
295 assert(Lex.getKind() == lltok::kw_target);
298 default: return TokError("unknown target property");
299 case lltok::kw_triple:
301 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
302 ParseStringConstant(Str))
304 M->setTargetTriple(Str);
306 case lltok::kw_datalayout:
308 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
309 ParseStringConstant(Str))
311 M->setDataLayout(Str);
317 /// ::= 'deplibs' '=' '[' ']'
318 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
319 /// FIXME: Remove in 4.0. Currently parse, but ignore.
320 bool LLParser::ParseDepLibs() {
321 assert(Lex.getKind() == lltok::kw_deplibs);
323 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
324 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
327 if (EatIfPresent(lltok::rsquare))
332 if (ParseStringConstant(Str)) return true;
333 } while (EatIfPresent(lltok::comma));
335 return ParseToken(lltok::rsquare, "expected ']' at end of list");
338 /// ParseUnnamedType:
339 /// ::= LocalVarID '=' 'type' type
340 bool LLParser::ParseUnnamedType() {
341 LocTy TypeLoc = Lex.getLoc();
342 unsigned TypeID = Lex.getUIntVal();
343 Lex.Lex(); // eat LocalVarID;
345 if (ParseToken(lltok::equal, "expected '=' after name") ||
346 ParseToken(lltok::kw_type, "expected 'type' after '='"))
349 Type *Result = nullptr;
350 if (ParseStructDefinition(TypeLoc, "",
351 NumberedTypes[TypeID], Result)) return true;
353 if (!isa<StructType>(Result)) {
354 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
356 return Error(TypeLoc, "non-struct types may not be recursive");
357 Entry.first = Result;
358 Entry.second = SMLoc();
366 /// ::= LocalVar '=' 'type' type
367 bool LLParser::ParseNamedType() {
368 std::string Name = Lex.getStrVal();
369 LocTy NameLoc = Lex.getLoc();
370 Lex.Lex(); // eat LocalVar.
372 if (ParseToken(lltok::equal, "expected '=' after name") ||
373 ParseToken(lltok::kw_type, "expected 'type' after name"))
376 Type *Result = nullptr;
377 if (ParseStructDefinition(NameLoc, Name,
378 NamedTypes[Name], Result)) return true;
380 if (!isa<StructType>(Result)) {
381 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
383 return Error(NameLoc, "non-struct types may not be recursive");
384 Entry.first = Result;
385 Entry.second = SMLoc();
393 /// ::= 'declare' FunctionHeader
394 bool LLParser::ParseDeclare() {
395 assert(Lex.getKind() == lltok::kw_declare);
399 return ParseFunctionHeader(F, false);
403 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
404 bool LLParser::ParseDefine() {
405 assert(Lex.getKind() == lltok::kw_define);
409 return ParseFunctionHeader(F, true) ||
410 ParseOptionalFunctionMetadata(*F) ||
411 ParseFunctionBody(*F);
417 bool LLParser::ParseGlobalType(bool &IsConstant) {
418 if (Lex.getKind() == lltok::kw_constant)
420 else if (Lex.getKind() == lltok::kw_global)
424 return TokError("expected 'global' or 'constant'");
430 /// ParseUnnamedGlobal:
431 /// OptionalVisibility ALIAS ...
432 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
433 /// ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
436 /// ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility, DLLStorageClass;
455 GlobalVariable::ThreadLocalMode TLM;
457 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
458 ParseOptionalVisibility(Visibility) ||
459 ParseOptionalDLLStorageClass(DLLStorageClass) ||
460 ParseOptionalThreadLocal(TLM) ||
461 parseOptionalUnnamedAddr(UnnamedAddr))
464 if (Lex.getKind() != lltok::kw_alias)
465 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
466 DLLStorageClass, TLM, UnnamedAddr);
467 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
471 /// ParseNamedGlobal:
472 /// GlobalVar '=' OptionalVisibility ALIAS ...
473 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
474 /// ... -> global variable
475 bool LLParser::ParseNamedGlobal() {
476 assert(Lex.getKind() == lltok::GlobalVar);
477 LocTy NameLoc = Lex.getLoc();
478 std::string Name = Lex.getStrVal();
482 unsigned Linkage, Visibility, DLLStorageClass;
483 GlobalVariable::ThreadLocalMode TLM;
485 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
486 ParseOptionalLinkage(Linkage, HasLinkage) ||
487 ParseOptionalVisibility(Visibility) ||
488 ParseOptionalDLLStorageClass(DLLStorageClass) ||
489 ParseOptionalThreadLocal(TLM) ||
490 parseOptionalUnnamedAddr(UnnamedAddr))
493 if (Lex.getKind() != lltok::kw_alias)
494 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
495 DLLStorageClass, TLM, UnnamedAddr);
497 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
501 bool LLParser::parseComdat() {
502 assert(Lex.getKind() == lltok::ComdatVar);
503 std::string Name = Lex.getStrVal();
504 LocTy NameLoc = Lex.getLoc();
507 if (ParseToken(lltok::equal, "expected '=' here"))
510 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
511 return TokError("expected comdat type");
513 Comdat::SelectionKind SK;
514 switch (Lex.getKind()) {
516 return TokError("unknown selection kind");
520 case lltok::kw_exactmatch:
521 SK = Comdat::ExactMatch;
523 case lltok::kw_largest:
524 SK = Comdat::Largest;
526 case lltok::kw_noduplicates:
527 SK = Comdat::NoDuplicates;
529 case lltok::kw_samesize:
530 SK = Comdat::SameSize;
535 // See if the comdat was forward referenced, if so, use the comdat.
536 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
537 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
538 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
539 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
542 if (I != ComdatSymTab.end())
545 C = M->getOrInsertComdat(Name);
546 C->setSelectionKind(SK);
552 // ::= '!' STRINGCONSTANT
553 bool LLParser::ParseMDString(MDString *&Result) {
555 if (ParseStringConstant(Str)) return true;
556 llvm::UpgradeMDStringConstant(Str);
557 Result = MDString::get(Context, Str);
562 // ::= '!' MDNodeNumber
563 bool LLParser::ParseMDNodeID(MDNode *&Result) {
564 // !{ ..., !42, ... }
566 if (ParseUInt32(MID))
569 // If not a forward reference, just return it now.
570 if (NumberedMetadata.count(MID)) {
571 Result = NumberedMetadata[MID];
575 // Otherwise, create MDNode forward reference.
576 auto &FwdRef = ForwardRefMDNodes[MID];
577 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
579 Result = FwdRef.first.get();
580 NumberedMetadata[MID].reset(Result);
584 /// ParseNamedMetadata:
585 /// !foo = !{ !1, !2 }
586 bool LLParser::ParseNamedMetadata() {
587 assert(Lex.getKind() == lltok::MetadataVar);
588 std::string Name = Lex.getStrVal();
591 if (ParseToken(lltok::equal, "expected '=' here") ||
592 ParseToken(lltok::exclaim, "Expected '!' here") ||
593 ParseToken(lltok::lbrace, "Expected '{' here"))
596 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
597 if (Lex.getKind() != lltok::rbrace)
599 if (ParseToken(lltok::exclaim, "Expected '!' here"))
603 if (ParseMDNodeID(N)) return true;
605 } while (EatIfPresent(lltok::comma));
607 return ParseToken(lltok::rbrace, "expected end of metadata node");
610 /// ParseStandaloneMetadata:
612 bool LLParser::ParseStandaloneMetadata() {
613 assert(Lex.getKind() == lltok::exclaim);
615 unsigned MetadataID = 0;
618 if (ParseUInt32(MetadataID) ||
619 ParseToken(lltok::equal, "expected '=' here"))
622 // Detect common error, from old metadata syntax.
623 if (Lex.getKind() == lltok::Type)
624 return TokError("unexpected type in metadata definition");
626 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
627 if (Lex.getKind() == lltok::MetadataVar) {
628 if (ParseSpecializedMDNode(Init, IsDistinct))
630 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
631 ParseMDTuple(Init, IsDistinct))
634 // See if this was forward referenced, if so, handle it.
635 auto FI = ForwardRefMDNodes.find(MetadataID);
636 if (FI != ForwardRefMDNodes.end()) {
637 FI->second.first->replaceAllUsesWith(Init);
638 ForwardRefMDNodes.erase(FI);
640 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
642 if (NumberedMetadata.count(MetadataID))
643 return TokError("Metadata id is already used");
644 NumberedMetadata[MetadataID].reset(Init);
650 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
651 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
652 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
656 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
657 /// OptionalDLLStorageClass OptionalThreadLocal
658 /// OptionalUnnamedAddr 'alias' Aliasee
663 /// Everything through OptionalUnnamedAddr has already been parsed.
665 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
666 unsigned Visibility, unsigned DLLStorageClass,
667 GlobalVariable::ThreadLocalMode TLM,
669 assert(Lex.getKind() == lltok::kw_alias);
672 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
674 if(!GlobalAlias::isValidLinkage(Linkage))
675 return Error(NameLoc, "invalid linkage type for alias");
677 if (!isValidVisibilityForLinkage(Visibility, L))
678 return Error(NameLoc,
679 "symbol with local linkage must have default visibility");
682 LocTy ExplicitTypeLoc = Lex.getLoc();
684 ParseToken(lltok::comma, "expected comma after alias's type"))
688 LocTy AliaseeLoc = Lex.getLoc();
689 if (Lex.getKind() != lltok::kw_bitcast &&
690 Lex.getKind() != lltok::kw_getelementptr &&
691 Lex.getKind() != lltok::kw_addrspacecast &&
692 Lex.getKind() != lltok::kw_inttoptr) {
693 if (ParseGlobalTypeAndValue(Aliasee))
696 // The bitcast dest type is not present, it is implied by the dest type.
700 if (ID.Kind != ValID::t_Constant)
701 return Error(AliaseeLoc, "invalid aliasee");
702 Aliasee = ID.ConstantVal;
705 Type *AliaseeType = Aliasee->getType();
706 auto *PTy = dyn_cast<PointerType>(AliaseeType);
708 return Error(AliaseeLoc, "An alias must have pointer type");
709 unsigned AddrSpace = PTy->getAddressSpace();
711 if (Ty != PTy->getElementType())
714 "explicit pointee type doesn't match operand's pointee type");
716 GlobalValue *GVal = nullptr;
718 // See if the alias was forward referenced, if so, prepare to replace the
719 // forward reference.
721 GVal = M->getNamedValue(Name);
723 if (!ForwardRefVals.erase(Name))
724 return Error(NameLoc, "redefinition of global '@" + Name + "'");
727 auto I = ForwardRefValIDs.find(NumberedVals.size());
728 if (I != ForwardRefValIDs.end()) {
729 GVal = I->second.first;
730 ForwardRefValIDs.erase(I);
734 // Okay, create the alias but do not insert it into the module yet.
735 std::unique_ptr<GlobalAlias> GA(
736 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
737 Name, Aliasee, /*Parent*/ nullptr));
738 GA->setThreadLocalMode(TLM);
739 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
740 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
741 GA->setUnnamedAddr(UnnamedAddr);
744 NumberedVals.push_back(GA.get());
747 // Verify that types agree.
748 if (GVal->getType() != GA->getType())
751 "forward reference and definition of alias have different types");
753 // If they agree, just RAUW the old value with the alias and remove the
755 GVal->replaceAllUsesWith(GA.get());
756 GVal->eraseFromParent();
759 // Insert into the module, we know its name won't collide now.
760 M->getAliasList().push_back(GA.get());
761 assert(GA->getName() == Name && "Should not be a name conflict!");
763 // The module owns this now
770 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
771 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
772 /// OptionalExternallyInitialized GlobalType Type Const
773 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
774 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
775 /// OptionalExternallyInitialized GlobalType Type Const
777 /// Everything up to and including OptionalUnnamedAddr has been parsed
780 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
781 unsigned Linkage, bool HasLinkage,
782 unsigned Visibility, unsigned DLLStorageClass,
783 GlobalVariable::ThreadLocalMode TLM,
785 if (!isValidVisibilityForLinkage(Visibility, Linkage))
786 return Error(NameLoc,
787 "symbol with local linkage must have default visibility");
790 bool IsConstant, IsExternallyInitialized;
791 LocTy IsExternallyInitializedLoc;
795 if (ParseOptionalAddrSpace(AddrSpace) ||
796 ParseOptionalToken(lltok::kw_externally_initialized,
797 IsExternallyInitialized,
798 &IsExternallyInitializedLoc) ||
799 ParseGlobalType(IsConstant) ||
800 ParseType(Ty, TyLoc))
803 // If the linkage is specified and is external, then no initializer is
805 Constant *Init = nullptr;
806 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
807 Linkage != GlobalValue::ExternalLinkage)) {
808 if (ParseGlobalValue(Ty, Init))
812 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
813 return Error(TyLoc, "invalid type for global variable");
815 GlobalValue *GVal = nullptr;
817 // See if the global was forward referenced, if so, use the global.
819 GVal = M->getNamedValue(Name);
821 if (!ForwardRefVals.erase(Name))
822 return Error(NameLoc, "redefinition of global '@" + Name + "'");
825 auto I = ForwardRefValIDs.find(NumberedVals.size());
826 if (I != ForwardRefValIDs.end()) {
827 GVal = I->second.first;
828 ForwardRefValIDs.erase(I);
834 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
835 Name, nullptr, GlobalVariable::NotThreadLocal,
838 if (GVal->getValueType() != Ty)
840 "forward reference and definition of global have different types");
842 GV = cast<GlobalVariable>(GVal);
844 // Move the forward-reference to the correct spot in the module.
845 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
849 NumberedVals.push_back(GV);
851 // Set the parsed properties on the global.
853 GV->setInitializer(Init);
854 GV->setConstant(IsConstant);
855 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
856 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
857 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
858 GV->setExternallyInitialized(IsExternallyInitialized);
859 GV->setThreadLocalMode(TLM);
860 GV->setUnnamedAddr(UnnamedAddr);
862 // Parse attributes on the global.
863 while (Lex.getKind() == lltok::comma) {
866 if (Lex.getKind() == lltok::kw_section) {
868 GV->setSection(Lex.getStrVal());
869 if (ParseToken(lltok::StringConstant, "expected global section string"))
871 } else if (Lex.getKind() == lltok::kw_align) {
873 if (ParseOptionalAlignment(Alignment)) return true;
874 GV->setAlignment(Alignment);
877 if (parseOptionalComdat(Name, C))
882 return TokError("unknown global variable property!");
889 /// ParseUnnamedAttrGrp
890 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
891 bool LLParser::ParseUnnamedAttrGrp() {
892 assert(Lex.getKind() == lltok::kw_attributes);
893 LocTy AttrGrpLoc = Lex.getLoc();
896 if (Lex.getKind() != lltok::AttrGrpID)
897 return TokError("expected attribute group id");
899 unsigned VarID = Lex.getUIntVal();
900 std::vector<unsigned> unused;
904 if (ParseToken(lltok::equal, "expected '=' here") ||
905 ParseToken(lltok::lbrace, "expected '{' here") ||
906 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
908 ParseToken(lltok::rbrace, "expected end of attribute group"))
911 if (!NumberedAttrBuilders[VarID].hasAttributes())
912 return Error(AttrGrpLoc, "attribute group has no attributes");
917 /// ParseFnAttributeValuePairs
918 /// ::= <attr> | <attr> '=' <value>
919 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
920 std::vector<unsigned> &FwdRefAttrGrps,
921 bool inAttrGrp, LocTy &BuiltinLoc) {
922 bool HaveError = false;
927 lltok::Kind Token = Lex.getKind();
928 if (Token == lltok::kw_builtin)
929 BuiltinLoc = Lex.getLoc();
932 if (!inAttrGrp) return HaveError;
933 return Error(Lex.getLoc(), "unterminated attribute group");
938 case lltok::AttrGrpID: {
939 // Allow a function to reference an attribute group:
941 // define void @foo() #1 { ... }
945 "cannot have an attribute group reference in an attribute group");
947 unsigned AttrGrpNum = Lex.getUIntVal();
948 if (inAttrGrp) break;
950 // Save the reference to the attribute group. We'll fill it in later.
951 FwdRefAttrGrps.push_back(AttrGrpNum);
954 // Target-dependent attributes:
955 case lltok::StringConstant: {
956 if (ParseStringAttribute(B))
961 // Target-independent attributes:
962 case lltok::kw_align: {
963 // As a hack, we allow function alignment to be initially parsed as an
964 // attribute on a function declaration/definition or added to an attribute
965 // group and later moved to the alignment field.
969 if (ParseToken(lltok::equal, "expected '=' here") ||
970 ParseUInt32(Alignment))
973 if (ParseOptionalAlignment(Alignment))
976 B.addAlignmentAttr(Alignment);
979 case lltok::kw_alignstack: {
983 if (ParseToken(lltok::equal, "expected '=' here") ||
984 ParseUInt32(Alignment))
987 if (ParseOptionalStackAlignment(Alignment))
990 B.addStackAlignmentAttr(Alignment);
993 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
994 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
995 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
996 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
997 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
998 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
999 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1000 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1001 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1002 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1003 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1004 case lltok::kw_noimplicitfloat:
1005 B.addAttribute(Attribute::NoImplicitFloat); break;
1006 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1007 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1008 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1009 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1010 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1011 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1012 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1013 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1014 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1015 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1016 case lltok::kw_returns_twice:
1017 B.addAttribute(Attribute::ReturnsTwice); break;
1018 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1019 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1020 case lltok::kw_sspstrong:
1021 B.addAttribute(Attribute::StackProtectStrong); break;
1022 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1023 case lltok::kw_sanitize_address:
1024 B.addAttribute(Attribute::SanitizeAddress); break;
1025 case lltok::kw_sanitize_thread:
1026 B.addAttribute(Attribute::SanitizeThread); break;
1027 case lltok::kw_sanitize_memory:
1028 B.addAttribute(Attribute::SanitizeMemory); break;
1029 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1032 case lltok::kw_inreg:
1033 case lltok::kw_signext:
1034 case lltok::kw_zeroext:
1037 "invalid use of attribute on a function");
1039 case lltok::kw_byval:
1040 case lltok::kw_dereferenceable:
1041 case lltok::kw_dereferenceable_or_null:
1042 case lltok::kw_inalloca:
1043 case lltok::kw_nest:
1044 case lltok::kw_noalias:
1045 case lltok::kw_nocapture:
1046 case lltok::kw_nonnull:
1047 case lltok::kw_returned:
1048 case lltok::kw_sret:
1051 "invalid use of parameter-only attribute on a function");
1059 //===----------------------------------------------------------------------===//
1060 // GlobalValue Reference/Resolution Routines.
1061 //===----------------------------------------------------------------------===//
1063 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1064 const std::string &Name) {
1065 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1066 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1068 return new GlobalVariable(*M, PTy->getElementType(), false,
1069 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1070 nullptr, GlobalVariable::NotThreadLocal,
1071 PTy->getAddressSpace());
1074 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1075 /// forward reference record if needed. This can return null if the value
1076 /// exists but does not have the right type.
1077 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1079 PointerType *PTy = dyn_cast<PointerType>(Ty);
1081 Error(Loc, "global variable reference must have pointer type");
1085 // Look this name up in the normal function symbol table.
1087 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1089 // If this is a forward reference for the value, see if we already created a
1090 // forward ref record.
1092 auto I = ForwardRefVals.find(Name);
1093 if (I != ForwardRefVals.end())
1094 Val = I->second.first;
1097 // If we have the value in the symbol table or fwd-ref table, return it.
1099 if (Val->getType() == Ty) return Val;
1100 Error(Loc, "'@" + Name + "' defined with type '" +
1101 getTypeString(Val->getType()) + "'");
1105 // Otherwise, create a new forward reference for this value and remember it.
1106 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1107 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1111 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1112 PointerType *PTy = dyn_cast<PointerType>(Ty);
1114 Error(Loc, "global variable reference must have pointer type");
1118 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1120 // If this is a forward reference for the value, see if we already created a
1121 // forward ref record.
1123 auto I = ForwardRefValIDs.find(ID);
1124 if (I != ForwardRefValIDs.end())
1125 Val = I->second.first;
1128 // If we have the value in the symbol table or fwd-ref table, return it.
1130 if (Val->getType() == Ty) return Val;
1131 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1132 getTypeString(Val->getType()) + "'");
1136 // Otherwise, create a new forward reference for this value and remember it.
1137 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1138 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1143 //===----------------------------------------------------------------------===//
1144 // Comdat Reference/Resolution Routines.
1145 //===----------------------------------------------------------------------===//
1147 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1148 // Look this name up in the comdat symbol table.
1149 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1150 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1151 if (I != ComdatSymTab.end())
1154 // Otherwise, create a new forward reference for this value and remember it.
1155 Comdat *C = M->getOrInsertComdat(Name);
1156 ForwardRefComdats[Name] = Loc;
1161 //===----------------------------------------------------------------------===//
1163 //===----------------------------------------------------------------------===//
1165 /// ParseToken - If the current token has the specified kind, eat it and return
1166 /// success. Otherwise, emit the specified error and return failure.
1167 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1168 if (Lex.getKind() != T)
1169 return TokError(ErrMsg);
1174 /// ParseStringConstant
1175 /// ::= StringConstant
1176 bool LLParser::ParseStringConstant(std::string &Result) {
1177 if (Lex.getKind() != lltok::StringConstant)
1178 return TokError("expected string constant");
1179 Result = Lex.getStrVal();
1186 bool LLParser::ParseUInt32(unsigned &Val) {
1187 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1188 return TokError("expected integer");
1189 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1190 if (Val64 != unsigned(Val64))
1191 return TokError("expected 32-bit integer (too large)");
1199 bool LLParser::ParseUInt64(uint64_t &Val) {
1200 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1201 return TokError("expected integer");
1202 Val = Lex.getAPSIntVal().getLimitedValue();
1208 /// := 'localdynamic'
1209 /// := 'initialexec'
1211 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1212 switch (Lex.getKind()) {
1214 return TokError("expected localdynamic, initialexec or localexec");
1215 case lltok::kw_localdynamic:
1216 TLM = GlobalVariable::LocalDynamicTLSModel;
1218 case lltok::kw_initialexec:
1219 TLM = GlobalVariable::InitialExecTLSModel;
1221 case lltok::kw_localexec:
1222 TLM = GlobalVariable::LocalExecTLSModel;
1230 /// ParseOptionalThreadLocal
1232 /// := 'thread_local'
1233 /// := 'thread_local' '(' tlsmodel ')'
1234 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1235 TLM = GlobalVariable::NotThreadLocal;
1236 if (!EatIfPresent(lltok::kw_thread_local))
1239 TLM = GlobalVariable::GeneralDynamicTLSModel;
1240 if (Lex.getKind() == lltok::lparen) {
1242 return ParseTLSModel(TLM) ||
1243 ParseToken(lltok::rparen, "expected ')' after thread local model");
1248 /// ParseOptionalAddrSpace
1250 /// := 'addrspace' '(' uint32 ')'
1251 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1253 if (!EatIfPresent(lltok::kw_addrspace))
1255 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1256 ParseUInt32(AddrSpace) ||
1257 ParseToken(lltok::rparen, "expected ')' in address space");
1260 /// ParseStringAttribute
1261 /// := StringConstant
1262 /// := StringConstant '=' StringConstant
1263 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1264 std::string Attr = Lex.getStrVal();
1267 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1269 B.addAttribute(Attr, Val);
1273 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1274 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1275 bool HaveError = false;
1280 lltok::Kind Token = Lex.getKind();
1282 default: // End of attributes.
1284 case lltok::StringConstant: {
1285 if (ParseStringAttribute(B))
1289 case lltok::kw_align: {
1291 if (ParseOptionalAlignment(Alignment))
1293 B.addAlignmentAttr(Alignment);
1296 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1297 case lltok::kw_dereferenceable: {
1299 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1301 B.addDereferenceableAttr(Bytes);
1304 case lltok::kw_dereferenceable_or_null: {
1306 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1308 B.addDereferenceableOrNullAttr(Bytes);
1311 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1312 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1313 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1314 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1315 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1316 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1317 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1318 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1319 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1320 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1321 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1322 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1324 case lltok::kw_alignstack:
1325 case lltok::kw_alwaysinline:
1326 case lltok::kw_argmemonly:
1327 case lltok::kw_builtin:
1328 case lltok::kw_inlinehint:
1329 case lltok::kw_jumptable:
1330 case lltok::kw_minsize:
1331 case lltok::kw_naked:
1332 case lltok::kw_nobuiltin:
1333 case lltok::kw_noduplicate:
1334 case lltok::kw_noimplicitfloat:
1335 case lltok::kw_noinline:
1336 case lltok::kw_nonlazybind:
1337 case lltok::kw_noredzone:
1338 case lltok::kw_noreturn:
1339 case lltok::kw_nounwind:
1340 case lltok::kw_optnone:
1341 case lltok::kw_optsize:
1342 case lltok::kw_returns_twice:
1343 case lltok::kw_sanitize_address:
1344 case lltok::kw_sanitize_memory:
1345 case lltok::kw_sanitize_thread:
1347 case lltok::kw_sspreq:
1348 case lltok::kw_sspstrong:
1349 case lltok::kw_safestack:
1350 case lltok::kw_uwtable:
1351 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1359 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1360 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1361 bool HaveError = false;
1366 lltok::Kind Token = Lex.getKind();
1368 default: // End of attributes.
1370 case lltok::StringConstant: {
1371 if (ParseStringAttribute(B))
1375 case lltok::kw_dereferenceable: {
1377 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1379 B.addDereferenceableAttr(Bytes);
1382 case lltok::kw_dereferenceable_or_null: {
1384 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1386 B.addDereferenceableOrNullAttr(Bytes);
1389 case lltok::kw_align: {
1391 if (ParseOptionalAlignment(Alignment))
1393 B.addAlignmentAttr(Alignment);
1396 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1397 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1398 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1399 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1400 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1403 case lltok::kw_byval:
1404 case lltok::kw_inalloca:
1405 case lltok::kw_nest:
1406 case lltok::kw_nocapture:
1407 case lltok::kw_returned:
1408 case lltok::kw_sret:
1409 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1412 case lltok::kw_alignstack:
1413 case lltok::kw_alwaysinline:
1414 case lltok::kw_argmemonly:
1415 case lltok::kw_builtin:
1416 case lltok::kw_cold:
1417 case lltok::kw_inlinehint:
1418 case lltok::kw_jumptable:
1419 case lltok::kw_minsize:
1420 case lltok::kw_naked:
1421 case lltok::kw_nobuiltin:
1422 case lltok::kw_noduplicate:
1423 case lltok::kw_noimplicitfloat:
1424 case lltok::kw_noinline:
1425 case lltok::kw_nonlazybind:
1426 case lltok::kw_noredzone:
1427 case lltok::kw_noreturn:
1428 case lltok::kw_nounwind:
1429 case lltok::kw_optnone:
1430 case lltok::kw_optsize:
1431 case lltok::kw_returns_twice:
1432 case lltok::kw_sanitize_address:
1433 case lltok::kw_sanitize_memory:
1434 case lltok::kw_sanitize_thread:
1436 case lltok::kw_sspreq:
1437 case lltok::kw_sspstrong:
1438 case lltok::kw_safestack:
1439 case lltok::kw_uwtable:
1440 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1443 case lltok::kw_readnone:
1444 case lltok::kw_readonly:
1445 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1452 /// ParseOptionalLinkage
1459 /// ::= 'linkonce_odr'
1460 /// ::= 'available_externally'
1463 /// ::= 'extern_weak'
1465 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1467 switch (Lex.getKind()) {
1468 default: Res=GlobalValue::ExternalLinkage; return false;
1469 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1470 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1471 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1472 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1473 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1474 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1475 case lltok::kw_available_externally:
1476 Res = GlobalValue::AvailableExternallyLinkage;
1478 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1479 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1480 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1481 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1488 /// ParseOptionalVisibility
1494 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1495 switch (Lex.getKind()) {
1496 default: Res = GlobalValue::DefaultVisibility; return false;
1497 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1498 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1499 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1505 /// ParseOptionalDLLStorageClass
1510 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1511 switch (Lex.getKind()) {
1512 default: Res = GlobalValue::DefaultStorageClass; return false;
1513 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1514 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1520 /// ParseOptionalCallingConv
1524 /// ::= 'intel_ocl_bicc'
1526 /// ::= 'x86_stdcallcc'
1527 /// ::= 'x86_fastcallcc'
1528 /// ::= 'x86_thiscallcc'
1529 /// ::= 'x86_vectorcallcc'
1530 /// ::= 'arm_apcscc'
1531 /// ::= 'arm_aapcscc'
1532 /// ::= 'arm_aapcs_vfpcc'
1533 /// ::= 'msp430_intrcc'
1534 /// ::= 'ptx_kernel'
1535 /// ::= 'ptx_device'
1537 /// ::= 'spir_kernel'
1538 /// ::= 'x86_64_sysvcc'
1539 /// ::= 'x86_64_win64cc'
1540 /// ::= 'webkit_jscc'
1542 /// ::= 'preserve_mostcc'
1543 /// ::= 'preserve_allcc'
1547 /// ::= 'cxx_fast_tlscc'
1550 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1551 switch (Lex.getKind()) {
1552 default: CC = CallingConv::C; return false;
1553 case lltok::kw_ccc: CC = CallingConv::C; break;
1554 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1555 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1556 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1557 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1558 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1559 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1560 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1561 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1562 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1563 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1564 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1565 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1566 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1567 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1568 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1569 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1570 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1571 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1572 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1573 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1574 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1575 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1576 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1577 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1578 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1579 case lltok::kw_cc: {
1581 return ParseUInt32(CC);
1589 /// ParseMetadataAttachment
1591 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1592 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1594 std::string Name = Lex.getStrVal();
1595 Kind = M->getMDKindID(Name);
1598 return ParseMDNode(MD);
1601 /// ParseInstructionMetadata
1602 /// ::= !dbg !42 (',' !dbg !57)*
1603 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1605 if (Lex.getKind() != lltok::MetadataVar)
1606 return TokError("expected metadata after comma");
1610 if (ParseMetadataAttachment(MDK, N))
1613 Inst.setMetadata(MDK, N);
1614 if (MDK == LLVMContext::MD_tbaa)
1615 InstsWithTBAATag.push_back(&Inst);
1617 // If this is the end of the list, we're done.
1618 } while (EatIfPresent(lltok::comma));
1622 /// ParseOptionalFunctionMetadata
1624 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1625 while (Lex.getKind() == lltok::MetadataVar) {
1628 if (ParseMetadataAttachment(MDK, N))
1631 F.setMetadata(MDK, N);
1636 /// ParseOptionalAlignment
1639 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1641 if (!EatIfPresent(lltok::kw_align))
1643 LocTy AlignLoc = Lex.getLoc();
1644 if (ParseUInt32(Alignment)) return true;
1645 if (!isPowerOf2_32(Alignment))
1646 return Error(AlignLoc, "alignment is not a power of two");
1647 if (Alignment > Value::MaximumAlignment)
1648 return Error(AlignLoc, "huge alignments are not supported yet");
1652 /// ParseOptionalDerefAttrBytes
1654 /// ::= AttrKind '(' 4 ')'
1656 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1657 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1659 assert((AttrKind == lltok::kw_dereferenceable ||
1660 AttrKind == lltok::kw_dereferenceable_or_null) &&
1664 if (!EatIfPresent(AttrKind))
1666 LocTy ParenLoc = Lex.getLoc();
1667 if (!EatIfPresent(lltok::lparen))
1668 return Error(ParenLoc, "expected '('");
1669 LocTy DerefLoc = Lex.getLoc();
1670 if (ParseUInt64(Bytes)) return true;
1671 ParenLoc = Lex.getLoc();
1672 if (!EatIfPresent(lltok::rparen))
1673 return Error(ParenLoc, "expected ')'");
1675 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1679 /// ParseOptionalCommaAlign
1683 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1685 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1686 bool &AteExtraComma) {
1687 AteExtraComma = false;
1688 while (EatIfPresent(lltok::comma)) {
1689 // Metadata at the end is an early exit.
1690 if (Lex.getKind() == lltok::MetadataVar) {
1691 AteExtraComma = true;
1695 if (Lex.getKind() != lltok::kw_align)
1696 return Error(Lex.getLoc(), "expected metadata or 'align'");
1698 if (ParseOptionalAlignment(Alignment)) return true;
1704 /// ParseScopeAndOrdering
1705 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1708 /// This sets Scope and Ordering to the parsed values.
1709 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1710 AtomicOrdering &Ordering) {
1714 Scope = CrossThread;
1715 if (EatIfPresent(lltok::kw_singlethread))
1716 Scope = SingleThread;
1718 return ParseOrdering(Ordering);
1722 /// ::= AtomicOrdering
1724 /// This sets Ordering to the parsed value.
1725 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1726 switch (Lex.getKind()) {
1727 default: return TokError("Expected ordering on atomic instruction");
1728 case lltok::kw_unordered: Ordering = Unordered; break;
1729 case lltok::kw_monotonic: Ordering = Monotonic; break;
1730 case lltok::kw_acquire: Ordering = Acquire; break;
1731 case lltok::kw_release: Ordering = Release; break;
1732 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1733 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1739 /// ParseOptionalStackAlignment
1741 /// ::= 'alignstack' '(' 4 ')'
1742 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1744 if (!EatIfPresent(lltok::kw_alignstack))
1746 LocTy ParenLoc = Lex.getLoc();
1747 if (!EatIfPresent(lltok::lparen))
1748 return Error(ParenLoc, "expected '('");
1749 LocTy AlignLoc = Lex.getLoc();
1750 if (ParseUInt32(Alignment)) return true;
1751 ParenLoc = Lex.getLoc();
1752 if (!EatIfPresent(lltok::rparen))
1753 return Error(ParenLoc, "expected ')'");
1754 if (!isPowerOf2_32(Alignment))
1755 return Error(AlignLoc, "stack alignment is not a power of two");
1759 /// ParseIndexList - This parses the index list for an insert/extractvalue
1760 /// instruction. This sets AteExtraComma in the case where we eat an extra
1761 /// comma at the end of the line and find that it is followed by metadata.
1762 /// Clients that don't allow metadata can call the version of this function that
1763 /// only takes one argument.
1766 /// ::= (',' uint32)+
1768 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1769 bool &AteExtraComma) {
1770 AteExtraComma = false;
1772 if (Lex.getKind() != lltok::comma)
1773 return TokError("expected ',' as start of index list");
1775 while (EatIfPresent(lltok::comma)) {
1776 if (Lex.getKind() == lltok::MetadataVar) {
1777 if (Indices.empty()) return TokError("expected index");
1778 AteExtraComma = true;
1782 if (ParseUInt32(Idx)) return true;
1783 Indices.push_back(Idx);
1789 //===----------------------------------------------------------------------===//
1791 //===----------------------------------------------------------------------===//
1793 /// ParseType - Parse a type.
1794 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1795 SMLoc TypeLoc = Lex.getLoc();
1796 switch (Lex.getKind()) {
1798 return TokError(Msg);
1800 // Type ::= 'float' | 'void' (etc)
1801 Result = Lex.getTyVal();
1805 // Type ::= StructType
1806 if (ParseAnonStructType(Result, false))
1809 case lltok::lsquare:
1810 // Type ::= '[' ... ']'
1811 Lex.Lex(); // eat the lsquare.
1812 if (ParseArrayVectorType(Result, false))
1815 case lltok::less: // Either vector or packed struct.
1816 // Type ::= '<' ... '>'
1818 if (Lex.getKind() == lltok::lbrace) {
1819 if (ParseAnonStructType(Result, true) ||
1820 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1822 } else if (ParseArrayVectorType(Result, true))
1825 case lltok::LocalVar: {
1827 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1829 // If the type hasn't been defined yet, create a forward definition and
1830 // remember where that forward def'n was seen (in case it never is defined).
1832 Entry.first = StructType::create(Context, Lex.getStrVal());
1833 Entry.second = Lex.getLoc();
1835 Result = Entry.first;
1840 case lltok::LocalVarID: {
1842 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1844 // If the type hasn't been defined yet, create a forward definition and
1845 // remember where that forward def'n was seen (in case it never is defined).
1847 Entry.first = StructType::create(Context);
1848 Entry.second = Lex.getLoc();
1850 Result = Entry.first;
1856 // Parse the type suffixes.
1858 switch (Lex.getKind()) {
1861 if (!AllowVoid && Result->isVoidTy())
1862 return Error(TypeLoc, "void type only allowed for function results");
1865 // Type ::= Type '*'
1867 if (Result->isLabelTy())
1868 return TokError("basic block pointers are invalid");
1869 if (Result->isVoidTy())
1870 return TokError("pointers to void are invalid - use i8* instead");
1871 if (!PointerType::isValidElementType(Result))
1872 return TokError("pointer to this type is invalid");
1873 Result = PointerType::getUnqual(Result);
1877 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1878 case lltok::kw_addrspace: {
1879 if (Result->isLabelTy())
1880 return TokError("basic block pointers are invalid");
1881 if (Result->isVoidTy())
1882 return TokError("pointers to void are invalid; use i8* instead");
1883 if (!PointerType::isValidElementType(Result))
1884 return TokError("pointer to this type is invalid");
1886 if (ParseOptionalAddrSpace(AddrSpace) ||
1887 ParseToken(lltok::star, "expected '*' in address space"))
1890 Result = PointerType::get(Result, AddrSpace);
1894 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1896 if (ParseFunctionType(Result))
1903 /// ParseParameterList
1905 /// ::= '(' Arg (',' Arg)* ')'
1907 /// ::= Type OptionalAttributes Value OptionalAttributes
1908 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1909 PerFunctionState &PFS, bool IsMustTailCall,
1910 bool InVarArgsFunc) {
1911 if (ParseToken(lltok::lparen, "expected '(' in call"))
1914 unsigned AttrIndex = 1;
1915 while (Lex.getKind() != lltok::rparen) {
1916 // If this isn't the first argument, we need a comma.
1917 if (!ArgList.empty() &&
1918 ParseToken(lltok::comma, "expected ',' in argument list"))
1921 // Parse an ellipsis if this is a musttail call in a variadic function.
1922 if (Lex.getKind() == lltok::dotdotdot) {
1923 const char *Msg = "unexpected ellipsis in argument list for ";
1924 if (!IsMustTailCall)
1925 return TokError(Twine(Msg) + "non-musttail call");
1927 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1928 Lex.Lex(); // Lex the '...', it is purely for readability.
1929 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1932 // Parse the argument.
1934 Type *ArgTy = nullptr;
1935 AttrBuilder ArgAttrs;
1937 if (ParseType(ArgTy, ArgLoc))
1940 if (ArgTy->isMetadataTy()) {
1941 if (ParseMetadataAsValue(V, PFS))
1944 // Otherwise, handle normal operands.
1945 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1948 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1953 if (IsMustTailCall && InVarArgsFunc)
1954 return TokError("expected '...' at end of argument list for musttail call "
1955 "in varargs function");
1957 Lex.Lex(); // Lex the ')'.
1961 /// ParseOptionalOperandBundles
1963 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
1966 /// ::= bundle-tag '(' ')'
1967 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
1969 /// bundle-tag ::= String Constant
1970 bool LLParser::ParseOptionalOperandBundles(
1971 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
1972 LocTy BeginLoc = Lex.getLoc();
1973 if (!EatIfPresent(lltok::lsquare))
1976 while (Lex.getKind() != lltok::rsquare) {
1977 // If this isn't the first operand bundle, we need a comma.
1978 if (!BundleList.empty() &&
1979 ParseToken(lltok::comma, "expected ',' in input list"))
1983 if (ParseStringConstant(Tag))
1986 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1989 std::vector<Value *> Inputs;
1990 while (Lex.getKind() != lltok::rparen) {
1991 // If this isn't the first input, we need a comma.
1992 if (!Inputs.empty() &&
1993 ParseToken(lltok::comma, "expected ',' in input list"))
1997 Value *Input = nullptr;
1998 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2000 Inputs.push_back(Input);
2003 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2005 Lex.Lex(); // Lex the ')'.
2008 if (BundleList.empty())
2009 return Error(BeginLoc, "operand bundle set must not be empty");
2011 Lex.Lex(); // Lex the ']'.
2015 /// ParseArgumentList - Parse the argument list for a function type or function
2017 /// ::= '(' ArgTypeListI ')'
2021 /// ::= ArgTypeList ',' '...'
2022 /// ::= ArgType (',' ArgType)*
2024 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2027 assert(Lex.getKind() == lltok::lparen);
2028 Lex.Lex(); // eat the (.
2030 if (Lex.getKind() == lltok::rparen) {
2032 } else if (Lex.getKind() == lltok::dotdotdot) {
2036 LocTy TypeLoc = Lex.getLoc();
2037 Type *ArgTy = nullptr;
2041 if (ParseType(ArgTy) ||
2042 ParseOptionalParamAttrs(Attrs)) return true;
2044 if (ArgTy->isVoidTy())
2045 return Error(TypeLoc, "argument can not have void type");
2047 if (Lex.getKind() == lltok::LocalVar) {
2048 Name = Lex.getStrVal();
2052 if (!FunctionType::isValidArgumentType(ArgTy))
2053 return Error(TypeLoc, "invalid type for function argument");
2055 unsigned AttrIndex = 1;
2056 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2057 AttrIndex++, Attrs),
2060 while (EatIfPresent(lltok::comma)) {
2061 // Handle ... at end of arg list.
2062 if (EatIfPresent(lltok::dotdotdot)) {
2067 // Otherwise must be an argument type.
2068 TypeLoc = Lex.getLoc();
2069 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2071 if (ArgTy->isVoidTy())
2072 return Error(TypeLoc, "argument can not have void type");
2074 if (Lex.getKind() == lltok::LocalVar) {
2075 Name = Lex.getStrVal();
2081 if (!ArgTy->isFirstClassType())
2082 return Error(TypeLoc, "invalid type for function argument");
2084 ArgList.emplace_back(
2086 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2091 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2094 /// ParseFunctionType
2095 /// ::= Type ArgumentList OptionalAttrs
2096 bool LLParser::ParseFunctionType(Type *&Result) {
2097 assert(Lex.getKind() == lltok::lparen);
2099 if (!FunctionType::isValidReturnType(Result))
2100 return TokError("invalid function return type");
2102 SmallVector<ArgInfo, 8> ArgList;
2104 if (ParseArgumentList(ArgList, isVarArg))
2107 // Reject names on the arguments lists.
2108 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2109 if (!ArgList[i].Name.empty())
2110 return Error(ArgList[i].Loc, "argument name invalid in function type");
2111 if (ArgList[i].Attrs.hasAttributes(i + 1))
2112 return Error(ArgList[i].Loc,
2113 "argument attributes invalid in function type");
2116 SmallVector<Type*, 16> ArgListTy;
2117 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2118 ArgListTy.push_back(ArgList[i].Ty);
2120 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2124 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2126 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2127 SmallVector<Type*, 8> Elts;
2128 if (ParseStructBody(Elts)) return true;
2130 Result = StructType::get(Context, Elts, Packed);
2134 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2135 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2136 std::pair<Type*, LocTy> &Entry,
2138 // If the type was already defined, diagnose the redefinition.
2139 if (Entry.first && !Entry.second.isValid())
2140 return Error(TypeLoc, "redefinition of type");
2142 // If we have opaque, just return without filling in the definition for the
2143 // struct. This counts as a definition as far as the .ll file goes.
2144 if (EatIfPresent(lltok::kw_opaque)) {
2145 // This type is being defined, so clear the location to indicate this.
2146 Entry.second = SMLoc();
2148 // If this type number has never been uttered, create it.
2150 Entry.first = StructType::create(Context, Name);
2151 ResultTy = Entry.first;
2155 // If the type starts with '<', then it is either a packed struct or a vector.
2156 bool isPacked = EatIfPresent(lltok::less);
2158 // If we don't have a struct, then we have a random type alias, which we
2159 // accept for compatibility with old files. These types are not allowed to be
2160 // forward referenced and not allowed to be recursive.
2161 if (Lex.getKind() != lltok::lbrace) {
2163 return Error(TypeLoc, "forward references to non-struct type");
2167 return ParseArrayVectorType(ResultTy, true);
2168 return ParseType(ResultTy);
2171 // This type is being defined, so clear the location to indicate this.
2172 Entry.second = SMLoc();
2174 // If this type number has never been uttered, create it.
2176 Entry.first = StructType::create(Context, Name);
2178 StructType *STy = cast<StructType>(Entry.first);
2180 SmallVector<Type*, 8> Body;
2181 if (ParseStructBody(Body) ||
2182 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2185 STy->setBody(Body, isPacked);
2191 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2194 /// ::= '{' Type (',' Type)* '}'
2195 /// ::= '<' '{' '}' '>'
2196 /// ::= '<' '{' Type (',' Type)* '}' '>'
2197 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2198 assert(Lex.getKind() == lltok::lbrace);
2199 Lex.Lex(); // Consume the '{'
2201 // Handle the empty struct.
2202 if (EatIfPresent(lltok::rbrace))
2205 LocTy EltTyLoc = Lex.getLoc();
2207 if (ParseType(Ty)) return true;
2210 if (!StructType::isValidElementType(Ty))
2211 return Error(EltTyLoc, "invalid element type for struct");
2213 while (EatIfPresent(lltok::comma)) {
2214 EltTyLoc = Lex.getLoc();
2215 if (ParseType(Ty)) return true;
2217 if (!StructType::isValidElementType(Ty))
2218 return Error(EltTyLoc, "invalid element type for struct");
2223 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2226 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2227 /// token has already been consumed.
2229 /// ::= '[' APSINTVAL 'x' Types ']'
2230 /// ::= '<' APSINTVAL 'x' Types '>'
2231 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2232 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2233 Lex.getAPSIntVal().getBitWidth() > 64)
2234 return TokError("expected number in address space");
2236 LocTy SizeLoc = Lex.getLoc();
2237 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2240 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2243 LocTy TypeLoc = Lex.getLoc();
2244 Type *EltTy = nullptr;
2245 if (ParseType(EltTy)) return true;
2247 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2248 "expected end of sequential type"))
2253 return Error(SizeLoc, "zero element vector is illegal");
2254 if ((unsigned)Size != Size)
2255 return Error(SizeLoc, "size too large for vector");
2256 if (!VectorType::isValidElementType(EltTy))
2257 return Error(TypeLoc, "invalid vector element type");
2258 Result = VectorType::get(EltTy, unsigned(Size));
2260 if (!ArrayType::isValidElementType(EltTy))
2261 return Error(TypeLoc, "invalid array element type");
2262 Result = ArrayType::get(EltTy, Size);
2267 //===----------------------------------------------------------------------===//
2268 // Function Semantic Analysis.
2269 //===----------------------------------------------------------------------===//
2271 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2273 : P(p), F(f), FunctionNumber(functionNumber) {
2275 // Insert unnamed arguments into the NumberedVals list.
2276 for (Argument &A : F.args())
2278 NumberedVals.push_back(&A);
2281 LLParser::PerFunctionState::~PerFunctionState() {
2282 // If there were any forward referenced non-basicblock values, delete them.
2284 for (const auto &P : ForwardRefVals) {
2285 if (isa<BasicBlock>(P.second.first))
2287 P.second.first->replaceAllUsesWith(
2288 UndefValue::get(P.second.first->getType()));
2289 delete P.second.first;
2292 for (const auto &P : ForwardRefValIDs) {
2293 if (isa<BasicBlock>(P.second.first))
2295 P.second.first->replaceAllUsesWith(
2296 UndefValue::get(P.second.first->getType()));
2297 delete P.second.first;
2301 bool LLParser::PerFunctionState::FinishFunction() {
2302 if (!ForwardRefVals.empty())
2303 return P.Error(ForwardRefVals.begin()->second.second,
2304 "use of undefined value '%" + ForwardRefVals.begin()->first +
2306 if (!ForwardRefValIDs.empty())
2307 return P.Error(ForwardRefValIDs.begin()->second.second,
2308 "use of undefined value '%" +
2309 Twine(ForwardRefValIDs.begin()->first) + "'");
2314 /// GetVal - Get a value with the specified name or ID, creating a
2315 /// forward reference record if needed. This can return null if the value
2316 /// exists but does not have the right type.
2317 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2318 LocTy Loc, OperatorConstraint OC) {
2319 // Look this name up in the normal function symbol table.
2320 Value *Val = F.getValueSymbolTable().lookup(Name);
2322 // If this is a forward reference for the value, see if we already created a
2323 // forward ref record.
2325 auto I = ForwardRefVals.find(Name);
2326 if (I != ForwardRefVals.end())
2327 Val = I->second.first;
2330 // If we have the value in the symbol table or fwd-ref table, return it.
2332 // Check operator constraints.
2338 if (!isa<CatchPadInst>(Val)) {
2339 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2344 if (!isa<CleanupPadInst>(Val)) {
2345 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2350 if (Val->getType() == Ty) return Val;
2351 if (Ty->isLabelTy())
2352 P.Error(Loc, "'%" + Name + "' is not a basic block");
2354 P.Error(Loc, "'%" + Name + "' defined with type '" +
2355 getTypeString(Val->getType()) + "'");
2359 // Don't make placeholders with invalid type.
2360 if (!Ty->isFirstClassType()) {
2361 P.Error(Loc, "invalid use of a non-first-class type");
2365 // Otherwise, create a new forward reference for this value and remember it.
2367 if (Ty->isLabelTy()) {
2369 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2371 FwdVal = new Argument(Ty, Name);
2375 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2379 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2382 llvm_unreachable("unexpected constraint");
2386 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2390 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2391 OperatorConstraint OC) {
2392 // Look this name up in the normal function symbol table.
2393 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2395 // If this is a forward reference for the value, see if we already created a
2396 // forward ref record.
2398 auto I = ForwardRefValIDs.find(ID);
2399 if (I != ForwardRefValIDs.end())
2400 Val = I->second.first;
2403 // If we have the value in the symbol table or fwd-ref table, return it.
2405 // Check operator constraint.
2411 if (!isa<CatchPadInst>(Val)) {
2412 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2417 if (!isa<CleanupPadInst>(Val)) {
2418 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2423 if (Val->getType() == Ty) return Val;
2424 if (Ty->isLabelTy())
2425 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2427 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2428 getTypeString(Val->getType()) + "'");
2432 if (!Ty->isFirstClassType()) {
2433 P.Error(Loc, "invalid use of a non-first-class type");
2437 // Otherwise, create a new forward reference for this value and remember it.
2439 if (Ty->isLabelTy()) {
2441 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2443 FwdVal = new Argument(Ty);
2447 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2450 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2453 llvm_unreachable("unexpected constraint");
2457 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2461 /// SetInstName - After an instruction is parsed and inserted into its
2462 /// basic block, this installs its name.
2463 bool LLParser::PerFunctionState::SetInstName(int NameID,
2464 const std::string &NameStr,
2465 LocTy NameLoc, Instruction *Inst) {
2466 // If this instruction has void type, it cannot have a name or ID specified.
2467 if (Inst->getType()->isVoidTy()) {
2468 if (NameID != -1 || !NameStr.empty())
2469 return P.Error(NameLoc, "instructions returning void cannot have a name");
2473 // If this was a numbered instruction, verify that the instruction is the
2474 // expected value and resolve any forward references.
2475 if (NameStr.empty()) {
2476 // If neither a name nor an ID was specified, just use the next ID.
2478 NameID = NumberedVals.size();
2480 if (unsigned(NameID) != NumberedVals.size())
2481 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2482 Twine(NumberedVals.size()) + "'");
2484 auto FI = ForwardRefValIDs.find(NameID);
2485 if (FI != ForwardRefValIDs.end()) {
2486 Value *Sentinel = FI->second.first;
2487 if (Sentinel->getType() != Inst->getType())
2488 return P.Error(NameLoc, "instruction forward referenced with type '" +
2489 getTypeString(FI->second.first->getType()) + "'");
2490 // Check operator constraints. We only put cleanuppads or catchpads in
2491 // the forward value map if the value is constrained to match.
2492 if (isa<CatchPadInst>(Sentinel)) {
2493 if (!isa<CatchPadInst>(Inst))
2494 return P.Error(FI->second.second,
2495 "'%" + Twine(NameID) + "' is not a catchpad");
2496 } else if (isa<CleanupPadInst>(Sentinel)) {
2497 if (!isa<CleanupPadInst>(Inst))
2498 return P.Error(FI->second.second,
2499 "'%" + Twine(NameID) + "' is not a cleanuppad");
2502 Sentinel->replaceAllUsesWith(Inst);
2504 ForwardRefValIDs.erase(FI);
2507 NumberedVals.push_back(Inst);
2511 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2512 auto FI = ForwardRefVals.find(NameStr);
2513 if (FI != ForwardRefVals.end()) {
2514 Value *Sentinel = FI->second.first;
2515 if (Sentinel->getType() != Inst->getType())
2516 return P.Error(NameLoc, "instruction forward referenced with type '" +
2517 getTypeString(FI->second.first->getType()) + "'");
2518 // Check operator constraints. We only put cleanuppads or catchpads in
2519 // the forward value map if the value is constrained to match.
2520 if (isa<CatchPadInst>(Sentinel)) {
2521 if (!isa<CatchPadInst>(Inst))
2522 return P.Error(FI->second.second,
2523 "'%" + NameStr + "' is not a catchpad");
2524 } else if (isa<CleanupPadInst>(Sentinel)) {
2525 if (!isa<CleanupPadInst>(Inst))
2526 return P.Error(FI->second.second,
2527 "'%" + NameStr + "' is not a cleanuppad");
2530 Sentinel->replaceAllUsesWith(Inst);
2532 ForwardRefVals.erase(FI);
2535 // Set the name on the instruction.
2536 Inst->setName(NameStr);
2538 if (Inst->getName() != NameStr)
2539 return P.Error(NameLoc, "multiple definition of local value named '" +
2544 /// GetBB - Get a basic block with the specified name or ID, creating a
2545 /// forward reference record if needed.
2546 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2548 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2549 Type::getLabelTy(F.getContext()), Loc));
2552 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2553 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2554 Type::getLabelTy(F.getContext()), Loc));
2557 /// DefineBB - Define the specified basic block, which is either named or
2558 /// unnamed. If there is an error, this returns null otherwise it returns
2559 /// the block being defined.
2560 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2564 BB = GetBB(NumberedVals.size(), Loc);
2566 BB = GetBB(Name, Loc);
2567 if (!BB) return nullptr; // Already diagnosed error.
2569 // Move the block to the end of the function. Forward ref'd blocks are
2570 // inserted wherever they happen to be referenced.
2571 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2573 // Remove the block from forward ref sets.
2575 ForwardRefValIDs.erase(NumberedVals.size());
2576 NumberedVals.push_back(BB);
2578 // BB forward references are already in the function symbol table.
2579 ForwardRefVals.erase(Name);
2585 //===----------------------------------------------------------------------===//
2587 //===----------------------------------------------------------------------===//
2589 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2590 /// type implied. For example, if we parse "4" we don't know what integer type
2591 /// it has. The value will later be combined with its type and checked for
2592 /// sanity. PFS is used to convert function-local operands of metadata (since
2593 /// metadata operands are not just parsed here but also converted to values).
2594 /// PFS can be null when we are not parsing metadata values inside a function.
2595 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2596 ID.Loc = Lex.getLoc();
2597 switch (Lex.getKind()) {
2598 default: return TokError("expected value token");
2599 case lltok::GlobalID: // @42
2600 ID.UIntVal = Lex.getUIntVal();
2601 ID.Kind = ValID::t_GlobalID;
2603 case lltok::GlobalVar: // @foo
2604 ID.StrVal = Lex.getStrVal();
2605 ID.Kind = ValID::t_GlobalName;
2607 case lltok::LocalVarID: // %42
2608 ID.UIntVal = Lex.getUIntVal();
2609 ID.Kind = ValID::t_LocalID;
2611 case lltok::LocalVar: // %foo
2612 ID.StrVal = Lex.getStrVal();
2613 ID.Kind = ValID::t_LocalName;
2616 ID.APSIntVal = Lex.getAPSIntVal();
2617 ID.Kind = ValID::t_APSInt;
2619 case lltok::APFloat:
2620 ID.APFloatVal = Lex.getAPFloatVal();
2621 ID.Kind = ValID::t_APFloat;
2623 case lltok::kw_true:
2624 ID.ConstantVal = ConstantInt::getTrue(Context);
2625 ID.Kind = ValID::t_Constant;
2627 case lltok::kw_false:
2628 ID.ConstantVal = ConstantInt::getFalse(Context);
2629 ID.Kind = ValID::t_Constant;
2631 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2632 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2633 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2634 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2636 case lltok::lbrace: {
2637 // ValID ::= '{' ConstVector '}'
2639 SmallVector<Constant*, 16> Elts;
2640 if (ParseGlobalValueVector(Elts) ||
2641 ParseToken(lltok::rbrace, "expected end of struct constant"))
2644 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2645 ID.UIntVal = Elts.size();
2646 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2647 Elts.size() * sizeof(Elts[0]));
2648 ID.Kind = ValID::t_ConstantStruct;
2652 // ValID ::= '<' ConstVector '>' --> Vector.
2653 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2655 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2657 SmallVector<Constant*, 16> Elts;
2658 LocTy FirstEltLoc = Lex.getLoc();
2659 if (ParseGlobalValueVector(Elts) ||
2661 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2662 ParseToken(lltok::greater, "expected end of constant"))
2665 if (isPackedStruct) {
2666 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2667 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2668 Elts.size() * sizeof(Elts[0]));
2669 ID.UIntVal = Elts.size();
2670 ID.Kind = ValID::t_PackedConstantStruct;
2675 return Error(ID.Loc, "constant vector must not be empty");
2677 if (!Elts[0]->getType()->isIntegerTy() &&
2678 !Elts[0]->getType()->isFloatingPointTy() &&
2679 !Elts[0]->getType()->isPointerTy())
2680 return Error(FirstEltLoc,
2681 "vector elements must have integer, pointer or floating point type");
2683 // Verify that all the vector elements have the same type.
2684 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2685 if (Elts[i]->getType() != Elts[0]->getType())
2686 return Error(FirstEltLoc,
2687 "vector element #" + Twine(i) +
2688 " is not of type '" + getTypeString(Elts[0]->getType()));
2690 ID.ConstantVal = ConstantVector::get(Elts);
2691 ID.Kind = ValID::t_Constant;
2694 case lltok::lsquare: { // Array Constant
2696 SmallVector<Constant*, 16> Elts;
2697 LocTy FirstEltLoc = Lex.getLoc();
2698 if (ParseGlobalValueVector(Elts) ||
2699 ParseToken(lltok::rsquare, "expected end of array constant"))
2702 // Handle empty element.
2704 // Use undef instead of an array because it's inconvenient to determine
2705 // the element type at this point, there being no elements to examine.
2706 ID.Kind = ValID::t_EmptyArray;
2710 if (!Elts[0]->getType()->isFirstClassType())
2711 return Error(FirstEltLoc, "invalid array element type: " +
2712 getTypeString(Elts[0]->getType()));
2714 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2716 // Verify all elements are correct type!
2717 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2718 if (Elts[i]->getType() != Elts[0]->getType())
2719 return Error(FirstEltLoc,
2720 "array element #" + Twine(i) +
2721 " is not of type '" + getTypeString(Elts[0]->getType()));
2724 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2725 ID.Kind = ValID::t_Constant;
2728 case lltok::kw_c: // c "foo"
2730 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2732 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2733 ID.Kind = ValID::t_Constant;
2736 case lltok::kw_asm: {
2737 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2739 bool HasSideEffect, AlignStack, AsmDialect;
2741 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2742 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2743 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2744 ParseStringConstant(ID.StrVal) ||
2745 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2746 ParseToken(lltok::StringConstant, "expected constraint string"))
2748 ID.StrVal2 = Lex.getStrVal();
2749 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2750 (unsigned(AsmDialect)<<2);
2751 ID.Kind = ValID::t_InlineAsm;
2755 case lltok::kw_blockaddress: {
2756 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2761 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2763 ParseToken(lltok::comma, "expected comma in block address expression")||
2764 ParseValID(Label) ||
2765 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2768 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2769 return Error(Fn.Loc, "expected function name in blockaddress");
2770 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2771 return Error(Label.Loc, "expected basic block name in blockaddress");
2773 // Try to find the function (but skip it if it's forward-referenced).
2774 GlobalValue *GV = nullptr;
2775 if (Fn.Kind == ValID::t_GlobalID) {
2776 if (Fn.UIntVal < NumberedVals.size())
2777 GV = NumberedVals[Fn.UIntVal];
2778 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2779 GV = M->getNamedValue(Fn.StrVal);
2781 Function *F = nullptr;
2783 // Confirm that it's actually a function with a definition.
2784 if (!isa<Function>(GV))
2785 return Error(Fn.Loc, "expected function name in blockaddress");
2786 F = cast<Function>(GV);
2787 if (F->isDeclaration())
2788 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2792 // Make a global variable as a placeholder for this reference.
2793 GlobalValue *&FwdRef =
2794 ForwardRefBlockAddresses.insert(std::make_pair(
2796 std::map<ValID, GlobalValue *>()))
2797 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2800 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2801 GlobalValue::InternalLinkage, nullptr, "");
2802 ID.ConstantVal = FwdRef;
2803 ID.Kind = ValID::t_Constant;
2807 // We found the function; now find the basic block. Don't use PFS, since we
2808 // might be inside a constant expression.
2810 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2811 if (Label.Kind == ValID::t_LocalID)
2812 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2814 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2816 return Error(Label.Loc, "referenced value is not a basic block");
2818 if (Label.Kind == ValID::t_LocalID)
2819 return Error(Label.Loc, "cannot take address of numeric label after "
2820 "the function is defined");
2821 BB = dyn_cast_or_null<BasicBlock>(
2822 F->getValueSymbolTable().lookup(Label.StrVal));
2824 return Error(Label.Loc, "referenced value is not a basic block");
2827 ID.ConstantVal = BlockAddress::get(F, BB);
2828 ID.Kind = ValID::t_Constant;
2832 case lltok::kw_trunc:
2833 case lltok::kw_zext:
2834 case lltok::kw_sext:
2835 case lltok::kw_fptrunc:
2836 case lltok::kw_fpext:
2837 case lltok::kw_bitcast:
2838 case lltok::kw_addrspacecast:
2839 case lltok::kw_uitofp:
2840 case lltok::kw_sitofp:
2841 case lltok::kw_fptoui:
2842 case lltok::kw_fptosi:
2843 case lltok::kw_inttoptr:
2844 case lltok::kw_ptrtoint: {
2845 unsigned Opc = Lex.getUIntVal();
2846 Type *DestTy = nullptr;
2849 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2850 ParseGlobalTypeAndValue(SrcVal) ||
2851 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2852 ParseType(DestTy) ||
2853 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2855 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2856 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2857 getTypeString(SrcVal->getType()) + "' to '" +
2858 getTypeString(DestTy) + "'");
2859 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2861 ID.Kind = ValID::t_Constant;
2864 case lltok::kw_extractvalue: {
2867 SmallVector<unsigned, 4> Indices;
2868 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2869 ParseGlobalTypeAndValue(Val) ||
2870 ParseIndexList(Indices) ||
2871 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2874 if (!Val->getType()->isAggregateType())
2875 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2876 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2877 return Error(ID.Loc, "invalid indices for extractvalue");
2878 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2879 ID.Kind = ValID::t_Constant;
2882 case lltok::kw_insertvalue: {
2884 Constant *Val0, *Val1;
2885 SmallVector<unsigned, 4> Indices;
2886 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2887 ParseGlobalTypeAndValue(Val0) ||
2888 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2889 ParseGlobalTypeAndValue(Val1) ||
2890 ParseIndexList(Indices) ||
2891 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2893 if (!Val0->getType()->isAggregateType())
2894 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2896 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2898 return Error(ID.Loc, "invalid indices for insertvalue");
2899 if (IndexedType != Val1->getType())
2900 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2901 getTypeString(Val1->getType()) +
2902 "' instead of '" + getTypeString(IndexedType) +
2904 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2905 ID.Kind = ValID::t_Constant;
2908 case lltok::kw_icmp:
2909 case lltok::kw_fcmp: {
2910 unsigned PredVal, Opc = Lex.getUIntVal();
2911 Constant *Val0, *Val1;
2913 if (ParseCmpPredicate(PredVal, Opc) ||
2914 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2915 ParseGlobalTypeAndValue(Val0) ||
2916 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2917 ParseGlobalTypeAndValue(Val1) ||
2918 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2921 if (Val0->getType() != Val1->getType())
2922 return Error(ID.Loc, "compare operands must have the same type");
2924 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2926 if (Opc == Instruction::FCmp) {
2927 if (!Val0->getType()->isFPOrFPVectorTy())
2928 return Error(ID.Loc, "fcmp requires floating point operands");
2929 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2931 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2932 if (!Val0->getType()->isIntOrIntVectorTy() &&
2933 !Val0->getType()->getScalarType()->isPointerTy())
2934 return Error(ID.Loc, "icmp requires pointer or integer operands");
2935 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2937 ID.Kind = ValID::t_Constant;
2941 // Binary Operators.
2943 case lltok::kw_fadd:
2945 case lltok::kw_fsub:
2947 case lltok::kw_fmul:
2948 case lltok::kw_udiv:
2949 case lltok::kw_sdiv:
2950 case lltok::kw_fdiv:
2951 case lltok::kw_urem:
2952 case lltok::kw_srem:
2953 case lltok::kw_frem:
2955 case lltok::kw_lshr:
2956 case lltok::kw_ashr: {
2960 unsigned Opc = Lex.getUIntVal();
2961 Constant *Val0, *Val1;
2963 LocTy ModifierLoc = Lex.getLoc();
2964 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2965 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2966 if (EatIfPresent(lltok::kw_nuw))
2968 if (EatIfPresent(lltok::kw_nsw)) {
2970 if (EatIfPresent(lltok::kw_nuw))
2973 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2974 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2975 if (EatIfPresent(lltok::kw_exact))
2978 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2979 ParseGlobalTypeAndValue(Val0) ||
2980 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2981 ParseGlobalTypeAndValue(Val1) ||
2982 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2984 if (Val0->getType() != Val1->getType())
2985 return Error(ID.Loc, "operands of constexpr must have same type");
2986 if (!Val0->getType()->isIntOrIntVectorTy()) {
2988 return Error(ModifierLoc, "nuw only applies to integer operations");
2990 return Error(ModifierLoc, "nsw only applies to integer operations");
2992 // Check that the type is valid for the operator.
2994 case Instruction::Add:
2995 case Instruction::Sub:
2996 case Instruction::Mul:
2997 case Instruction::UDiv:
2998 case Instruction::SDiv:
2999 case Instruction::URem:
3000 case Instruction::SRem:
3001 case Instruction::Shl:
3002 case Instruction::AShr:
3003 case Instruction::LShr:
3004 if (!Val0->getType()->isIntOrIntVectorTy())
3005 return Error(ID.Loc, "constexpr requires integer operands");
3007 case Instruction::FAdd:
3008 case Instruction::FSub:
3009 case Instruction::FMul:
3010 case Instruction::FDiv:
3011 case Instruction::FRem:
3012 if (!Val0->getType()->isFPOrFPVectorTy())
3013 return Error(ID.Loc, "constexpr requires fp operands");
3015 default: llvm_unreachable("Unknown binary operator!");
3018 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3019 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3020 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3021 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3023 ID.Kind = ValID::t_Constant;
3027 // Logical Operations
3030 case lltok::kw_xor: {
3031 unsigned Opc = Lex.getUIntVal();
3032 Constant *Val0, *Val1;
3034 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3035 ParseGlobalTypeAndValue(Val0) ||
3036 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3037 ParseGlobalTypeAndValue(Val1) ||
3038 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3040 if (Val0->getType() != Val1->getType())
3041 return Error(ID.Loc, "operands of constexpr must have same type");
3042 if (!Val0->getType()->isIntOrIntVectorTy())
3043 return Error(ID.Loc,
3044 "constexpr requires integer or integer vector operands");
3045 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3046 ID.Kind = ValID::t_Constant;
3050 case lltok::kw_getelementptr:
3051 case lltok::kw_shufflevector:
3052 case lltok::kw_insertelement:
3053 case lltok::kw_extractelement:
3054 case lltok::kw_select: {
3055 unsigned Opc = Lex.getUIntVal();
3056 SmallVector<Constant*, 16> Elts;
3057 bool InBounds = false;
3061 if (Opc == Instruction::GetElementPtr)
3062 InBounds = EatIfPresent(lltok::kw_inbounds);
3064 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3067 LocTy ExplicitTypeLoc = Lex.getLoc();
3068 if (Opc == Instruction::GetElementPtr) {
3069 if (ParseType(Ty) ||
3070 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3074 if (ParseGlobalValueVector(Elts) ||
3075 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3078 if (Opc == Instruction::GetElementPtr) {
3079 if (Elts.size() == 0 ||
3080 !Elts[0]->getType()->getScalarType()->isPointerTy())
3081 return Error(ID.Loc, "base of getelementptr must be a pointer");
3083 Type *BaseType = Elts[0]->getType();
3084 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3085 if (Ty != BasePointerType->getElementType())
3088 "explicit pointee type doesn't match operand's pointee type");
3090 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3091 for (Constant *Val : Indices) {
3092 Type *ValTy = Val->getType();
3093 if (!ValTy->getScalarType()->isIntegerTy())
3094 return Error(ID.Loc, "getelementptr index must be an integer");
3095 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3096 return Error(ID.Loc, "getelementptr index type missmatch");
3097 if (ValTy->isVectorTy()) {
3098 unsigned ValNumEl = ValTy->getVectorNumElements();
3099 unsigned PtrNumEl = BaseType->getVectorNumElements();
3100 if (ValNumEl != PtrNumEl)
3103 "getelementptr vector index has a wrong number of elements");
3107 SmallPtrSet<Type*, 4> Visited;
3108 if (!Indices.empty() && !Ty->isSized(&Visited))
3109 return Error(ID.Loc, "base element of getelementptr must be sized");
3111 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3112 return Error(ID.Loc, "invalid getelementptr indices");
3114 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3115 } else if (Opc == Instruction::Select) {
3116 if (Elts.size() != 3)
3117 return Error(ID.Loc, "expected three operands to select");
3118 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3120 return Error(ID.Loc, Reason);
3121 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3122 } else if (Opc == Instruction::ShuffleVector) {
3123 if (Elts.size() != 3)
3124 return Error(ID.Loc, "expected three operands to shufflevector");
3125 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3126 return Error(ID.Loc, "invalid operands to shufflevector");
3128 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3129 } else if (Opc == Instruction::ExtractElement) {
3130 if (Elts.size() != 2)
3131 return Error(ID.Loc, "expected two operands to extractelement");
3132 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3133 return Error(ID.Loc, "invalid extractelement operands");
3134 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3136 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3137 if (Elts.size() != 3)
3138 return Error(ID.Loc, "expected three operands to insertelement");
3139 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3140 return Error(ID.Loc, "invalid insertelement operands");
3142 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3145 ID.Kind = ValID::t_Constant;
3154 /// ParseGlobalValue - Parse a global value with the specified type.
3155 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3159 bool Parsed = ParseValID(ID) ||
3160 ConvertValIDToValue(Ty, ID, V, nullptr);
3161 if (V && !(C = dyn_cast<Constant>(V)))
3162 return Error(ID.Loc, "global values must be constants");
3166 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3168 return ParseType(Ty) ||
3169 ParseGlobalValue(Ty, V);
3172 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3175 LocTy KwLoc = Lex.getLoc();
3176 if (!EatIfPresent(lltok::kw_comdat))
3179 if (EatIfPresent(lltok::lparen)) {
3180 if (Lex.getKind() != lltok::ComdatVar)
3181 return TokError("expected comdat variable");
3182 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3184 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3187 if (GlobalName.empty())
3188 return TokError("comdat cannot be unnamed");
3189 C = getComdat(GlobalName, KwLoc);
3195 /// ParseGlobalValueVector
3197 /// ::= TypeAndValue (',' TypeAndValue)*
3198 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3200 if (Lex.getKind() == lltok::rbrace ||
3201 Lex.getKind() == lltok::rsquare ||
3202 Lex.getKind() == lltok::greater ||
3203 Lex.getKind() == lltok::rparen)
3207 if (ParseGlobalTypeAndValue(C)) return true;
3210 while (EatIfPresent(lltok::comma)) {
3211 if (ParseGlobalTypeAndValue(C)) return true;
3218 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3219 SmallVector<Metadata *, 16> Elts;
3220 if (ParseMDNodeVector(Elts))
3223 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3230 /// ::= !DILocation(...)
3231 bool LLParser::ParseMDNode(MDNode *&N) {
3232 if (Lex.getKind() == lltok::MetadataVar)
3233 return ParseSpecializedMDNode(N);
3235 return ParseToken(lltok::exclaim, "expected '!' here") ||
3239 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3241 if (Lex.getKind() == lltok::lbrace)
3242 return ParseMDTuple(N);
3245 return ParseMDNodeID(N);
3250 /// Structure to represent an optional metadata field.
3251 template <class FieldTy> struct MDFieldImpl {
3252 typedef MDFieldImpl ImplTy;
3256 void assign(FieldTy Val) {
3258 this->Val = std::move(Val);
3261 explicit MDFieldImpl(FieldTy Default)
3262 : Val(std::move(Default)), Seen(false) {}
3265 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3268 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3269 : ImplTy(Default), Max(Max) {}
3271 struct LineField : public MDUnsignedField {
3272 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3274 struct ColumnField : public MDUnsignedField {
3275 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3277 struct DwarfTagField : public MDUnsignedField {
3278 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3279 DwarfTagField(dwarf::Tag DefaultTag)
3280 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3282 struct DwarfMacinfoTypeField : public MDUnsignedField {
3283 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3284 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3285 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3287 struct DwarfAttEncodingField : public MDUnsignedField {
3288 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3290 struct DwarfVirtualityField : public MDUnsignedField {
3291 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3293 struct DwarfLangField : public MDUnsignedField {
3294 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3297 struct DIFlagField : public MDUnsignedField {
3298 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3301 struct MDSignedField : public MDFieldImpl<int64_t> {
3305 MDSignedField(int64_t Default = 0)
3306 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3307 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3308 : ImplTy(Default), Min(Min), Max(Max) {}
3311 struct MDBoolField : public MDFieldImpl<bool> {
3312 MDBoolField(bool Default = false) : ImplTy(Default) {}
3314 struct MDField : public MDFieldImpl<Metadata *> {
3317 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3319 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3320 MDConstant() : ImplTy(nullptr) {}
3322 struct MDStringField : public MDFieldImpl<MDString *> {
3324 MDStringField(bool AllowEmpty = true)
3325 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3327 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3328 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3336 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3337 MDUnsignedField &Result) {
3338 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3339 return TokError("expected unsigned integer");
3341 auto &U = Lex.getAPSIntVal();
3342 if (U.ugt(Result.Max))
3343 return TokError("value for '" + Name + "' too large, limit is " +
3345 Result.assign(U.getZExtValue());
3346 assert(Result.Val <= Result.Max && "Expected value in range");
3352 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3353 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3356 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3357 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3361 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3362 if (Lex.getKind() == lltok::APSInt)
3363 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3365 if (Lex.getKind() != lltok::DwarfTag)
3366 return TokError("expected DWARF tag");
3368 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3369 if (Tag == dwarf::DW_TAG_invalid)
3370 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3371 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3379 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3380 DwarfMacinfoTypeField &Result) {
3381 if (Lex.getKind() == lltok::APSInt)
3382 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3384 if (Lex.getKind() != lltok::DwarfMacinfo)
3385 return TokError("expected DWARF macinfo type");
3387 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3388 if (Macinfo == dwarf::DW_MACINFO_invalid)
3390 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3391 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type");
3393 Result.assign(Macinfo);
3399 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3400 DwarfVirtualityField &Result) {
3401 if (Lex.getKind() == lltok::APSInt)
3402 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3404 if (Lex.getKind() != lltok::DwarfVirtuality)
3405 return TokError("expected DWARF virtuality code");
3407 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3409 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3410 Lex.getStrVal() + "'");
3411 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3412 Result.assign(Virtuality);
3418 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3419 if (Lex.getKind() == lltok::APSInt)
3420 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3422 if (Lex.getKind() != lltok::DwarfLang)
3423 return TokError("expected DWARF language");
3425 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3427 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3429 assert(Lang <= Result.Max && "Expected valid DWARF language");
3430 Result.assign(Lang);
3436 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3437 DwarfAttEncodingField &Result) {
3438 if (Lex.getKind() == lltok::APSInt)
3439 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3441 if (Lex.getKind() != lltok::DwarfAttEncoding)
3442 return TokError("expected DWARF type attribute encoding");
3444 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3446 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3447 Lex.getStrVal() + "'");
3448 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3449 Result.assign(Encoding);
3456 /// ::= DIFlagVector
3457 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3459 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3460 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3462 // Parser for a single flag.
3463 auto parseFlag = [&](unsigned &Val) {
3464 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3465 return ParseUInt32(Val);
3467 if (Lex.getKind() != lltok::DIFlag)
3468 return TokError("expected debug info flag");
3470 Val = DINode::getFlag(Lex.getStrVal());
3472 return TokError(Twine("invalid debug info flag flag '") +
3473 Lex.getStrVal() + "'");
3478 // Parse the flags and combine them together.
3479 unsigned Combined = 0;
3485 } while (EatIfPresent(lltok::bar));
3487 Result.assign(Combined);
3492 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3493 MDSignedField &Result) {
3494 if (Lex.getKind() != lltok::APSInt)
3495 return TokError("expected signed integer");
3497 auto &S = Lex.getAPSIntVal();
3499 return TokError("value for '" + Name + "' too small, limit is " +
3502 return TokError("value for '" + Name + "' too large, limit is " +
3504 Result.assign(S.getExtValue());
3505 assert(Result.Val >= Result.Min && "Expected value in range");
3506 assert(Result.Val <= Result.Max && "Expected value in range");
3512 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3513 switch (Lex.getKind()) {
3515 return TokError("expected 'true' or 'false'");
3516 case lltok::kw_true:
3517 Result.assign(true);
3519 case lltok::kw_false:
3520 Result.assign(false);
3528 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3529 if (Lex.getKind() == lltok::kw_null) {
3530 if (!Result.AllowNull)
3531 return TokError("'" + Name + "' cannot be null");
3533 Result.assign(nullptr);
3538 if (ParseMetadata(MD, nullptr))
3546 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3548 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3551 Result.assign(cast<ConstantAsMetadata>(MD));
3556 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3557 LocTy ValueLoc = Lex.getLoc();
3559 if (ParseStringConstant(S))
3562 if (!Result.AllowEmpty && S.empty())
3563 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3565 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3570 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3571 SmallVector<Metadata *, 4> MDs;
3572 if (ParseMDNodeVector(MDs))
3575 Result.assign(std::move(MDs));
3579 } // end namespace llvm
3581 template <class ParserTy>
3582 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3584 if (Lex.getKind() != lltok::LabelStr)
3585 return TokError("expected field label here");
3589 } while (EatIfPresent(lltok::comma));
3594 template <class ParserTy>
3595 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3596 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3599 if (ParseToken(lltok::lparen, "expected '(' here"))
3601 if (Lex.getKind() != lltok::rparen)
3602 if (ParseMDFieldsImplBody(parseField))
3605 ClosingLoc = Lex.getLoc();
3606 return ParseToken(lltok::rparen, "expected ')' here");
3609 template <class FieldTy>
3610 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3612 return TokError("field '" + Name + "' cannot be specified more than once");
3614 LocTy Loc = Lex.getLoc();
3616 return ParseMDField(Loc, Name, Result);
3619 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3620 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3622 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3623 if (Lex.getStrVal() == #CLASS) \
3624 return Parse##CLASS(N, IsDistinct);
3625 #include "llvm/IR/Metadata.def"
3627 return TokError("expected metadata type");
3630 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3631 #define NOP_FIELD(NAME, TYPE, INIT)
3632 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3634 return Error(ClosingLoc, "missing required field '" #NAME "'");
3635 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3636 if (Lex.getStrVal() == #NAME) \
3637 return ParseMDField(#NAME, NAME);
3638 #define PARSE_MD_FIELDS() \
3639 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3642 if (ParseMDFieldsImpl([&]() -> bool { \
3643 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3644 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3647 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3649 #define GET_OR_DISTINCT(CLASS, ARGS) \
3650 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3652 /// ParseDILocationFields:
3653 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3654 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3655 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3656 OPTIONAL(line, LineField, ); \
3657 OPTIONAL(column, ColumnField, ); \
3658 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3659 OPTIONAL(inlinedAt, MDField, );
3661 #undef VISIT_MD_FIELDS
3663 Result = GET_OR_DISTINCT(
3664 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3668 /// ParseGenericDINode:
3669 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3670 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3671 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3672 REQUIRED(tag, DwarfTagField, ); \
3673 OPTIONAL(header, MDStringField, ); \
3674 OPTIONAL(operands, MDFieldList, );
3676 #undef VISIT_MD_FIELDS
3678 Result = GET_OR_DISTINCT(GenericDINode,
3679 (Context, tag.Val, header.Val, operands.Val));
3683 /// ParseDISubrange:
3684 /// ::= !DISubrange(count: 30, lowerBound: 2)
3685 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3686 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3687 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3688 OPTIONAL(lowerBound, MDSignedField, );
3690 #undef VISIT_MD_FIELDS
3692 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3696 /// ParseDIEnumerator:
3697 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3698 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3699 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3700 REQUIRED(name, MDStringField, ); \
3701 REQUIRED(value, MDSignedField, );
3703 #undef VISIT_MD_FIELDS
3705 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3709 /// ParseDIBasicType:
3710 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3711 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3712 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3713 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3714 OPTIONAL(name, MDStringField, ); \
3715 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3716 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3717 OPTIONAL(encoding, DwarfAttEncodingField, );
3719 #undef VISIT_MD_FIELDS
3721 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3722 align.Val, encoding.Val));
3726 /// ParseDIDerivedType:
3727 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3728 /// line: 7, scope: !1, baseType: !2, size: 32,
3729 /// align: 32, offset: 0, flags: 0, extraData: !3)
3730 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3731 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3732 REQUIRED(tag, DwarfTagField, ); \
3733 OPTIONAL(name, MDStringField, ); \
3734 OPTIONAL(file, MDField, ); \
3735 OPTIONAL(line, LineField, ); \
3736 OPTIONAL(scope, MDField, ); \
3737 REQUIRED(baseType, MDField, ); \
3738 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3739 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3740 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3741 OPTIONAL(flags, DIFlagField, ); \
3742 OPTIONAL(extraData, MDField, );
3744 #undef VISIT_MD_FIELDS
3746 Result = GET_OR_DISTINCT(DIDerivedType,
3747 (Context, tag.Val, name.Val, file.Val, line.Val,
3748 scope.Val, baseType.Val, size.Val, align.Val,
3749 offset.Val, flags.Val, extraData.Val));
3753 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3754 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3755 REQUIRED(tag, DwarfTagField, ); \
3756 OPTIONAL(name, MDStringField, ); \
3757 OPTIONAL(file, MDField, ); \
3758 OPTIONAL(line, LineField, ); \
3759 OPTIONAL(scope, MDField, ); \
3760 OPTIONAL(baseType, MDField, ); \
3761 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3762 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3763 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3764 OPTIONAL(flags, DIFlagField, ); \
3765 OPTIONAL(elements, MDField, ); \
3766 OPTIONAL(runtimeLang, DwarfLangField, ); \
3767 OPTIONAL(vtableHolder, MDField, ); \
3768 OPTIONAL(templateParams, MDField, ); \
3769 OPTIONAL(identifier, MDStringField, );
3771 #undef VISIT_MD_FIELDS
3773 Result = GET_OR_DISTINCT(
3775 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3776 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3777 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3781 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3782 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3783 OPTIONAL(flags, DIFlagField, ); \
3784 REQUIRED(types, MDField, );
3786 #undef VISIT_MD_FIELDS
3788 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3792 /// ParseDIFileType:
3793 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3794 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3795 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3796 REQUIRED(filename, MDStringField, ); \
3797 REQUIRED(directory, MDStringField, );
3799 #undef VISIT_MD_FIELDS
3801 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3805 /// ParseDICompileUnit:
3806 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3807 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3808 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3809 /// enums: !1, retainedTypes: !2, subprograms: !3,
3810 /// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
3811 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3813 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3815 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3816 REQUIRED(language, DwarfLangField, ); \
3817 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3818 OPTIONAL(producer, MDStringField, ); \
3819 OPTIONAL(isOptimized, MDBoolField, ); \
3820 OPTIONAL(flags, MDStringField, ); \
3821 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3822 OPTIONAL(splitDebugFilename, MDStringField, ); \
3823 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3824 OPTIONAL(enums, MDField, ); \
3825 OPTIONAL(retainedTypes, MDField, ); \
3826 OPTIONAL(subprograms, MDField, ); \
3827 OPTIONAL(globals, MDField, ); \
3828 OPTIONAL(imports, MDField, ); \
3829 OPTIONAL(macros, MDField, ); \
3830 OPTIONAL(dwoId, MDUnsignedField, );
3832 #undef VISIT_MD_FIELDS
3834 Result = DICompileUnit::getDistinct(
3835 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3836 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3837 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, macros.Val,
3842 /// ParseDISubprogram:
3843 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3844 /// file: !1, line: 7, type: !2, isLocal: false,
3845 /// isDefinition: true, scopeLine: 8, containingType: !3,
3846 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3847 /// virtualIndex: 10, flags: 11,
3848 /// isOptimized: false, templateParams: !4, declaration: !5,
3850 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3851 auto Loc = Lex.getLoc();
3852 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3853 OPTIONAL(scope, MDField, ); \
3854 OPTIONAL(name, MDStringField, ); \
3855 OPTIONAL(linkageName, MDStringField, ); \
3856 OPTIONAL(file, MDField, ); \
3857 OPTIONAL(line, LineField, ); \
3858 OPTIONAL(type, MDField, ); \
3859 OPTIONAL(isLocal, MDBoolField, ); \
3860 OPTIONAL(isDefinition, MDBoolField, (true)); \
3861 OPTIONAL(scopeLine, LineField, ); \
3862 OPTIONAL(containingType, MDField, ); \
3863 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3864 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3865 OPTIONAL(flags, DIFlagField, ); \
3866 OPTIONAL(isOptimized, MDBoolField, ); \
3867 OPTIONAL(templateParams, MDField, ); \
3868 OPTIONAL(declaration, MDField, ); \
3869 OPTIONAL(variables, MDField, );
3871 #undef VISIT_MD_FIELDS
3873 if (isDefinition.Val && !IsDistinct)
3876 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3878 Result = GET_OR_DISTINCT(
3880 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3881 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3882 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3883 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3887 /// ParseDILexicalBlock:
3888 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3889 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3890 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3891 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3892 OPTIONAL(file, MDField, ); \
3893 OPTIONAL(line, LineField, ); \
3894 OPTIONAL(column, ColumnField, );
3896 #undef VISIT_MD_FIELDS
3898 Result = GET_OR_DISTINCT(
3899 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3903 /// ParseDILexicalBlockFile:
3904 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3905 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3906 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3907 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3908 OPTIONAL(file, MDField, ); \
3909 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3911 #undef VISIT_MD_FIELDS
3913 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3914 (Context, scope.Val, file.Val, discriminator.Val));
3918 /// ParseDINamespace:
3919 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3920 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3921 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3922 REQUIRED(scope, MDField, ); \
3923 OPTIONAL(file, MDField, ); \
3924 OPTIONAL(name, MDStringField, ); \
3925 OPTIONAL(line, LineField, );
3927 #undef VISIT_MD_FIELDS
3929 Result = GET_OR_DISTINCT(DINamespace,
3930 (Context, scope.Val, file.Val, name.Val, line.Val));
3935 /// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
3936 bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
3937 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3938 REQUIRED(type, DwarfMacinfoTypeField, ); \
3939 REQUIRED(line, LineField, ); \
3940 REQUIRED(name, MDStringField, ); \
3941 OPTIONAL(value, MDStringField, );
3943 #undef VISIT_MD_FIELDS
3945 Result = GET_OR_DISTINCT(DIMacro,
3946 (Context, type.Val, line.Val, name.Val, value.Val));
3950 /// ParseDIMacroFile:
3951 /// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
3952 bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
3953 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3954 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
3955 REQUIRED(line, LineField, ); \
3956 REQUIRED(file, MDField, ); \
3957 OPTIONAL(nodes, MDField, );
3959 #undef VISIT_MD_FIELDS
3961 Result = GET_OR_DISTINCT(DIMacroFile,
3962 (Context, type.Val, line.Val, file.Val, nodes.Val));
3968 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3969 /// includePath: "/usr/include", isysroot: "/")
3970 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3971 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3972 REQUIRED(scope, MDField, ); \
3973 REQUIRED(name, MDStringField, ); \
3974 OPTIONAL(configMacros, MDStringField, ); \
3975 OPTIONAL(includePath, MDStringField, ); \
3976 OPTIONAL(isysroot, MDStringField, );
3978 #undef VISIT_MD_FIELDS
3980 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3981 configMacros.Val, includePath.Val, isysroot.Val));
3985 /// ParseDITemplateTypeParameter:
3986 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3987 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3988 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3989 OPTIONAL(name, MDStringField, ); \
3990 REQUIRED(type, MDField, );
3992 #undef VISIT_MD_FIELDS
3995 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3999 /// ParseDITemplateValueParameter:
4000 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4001 /// name: "V", type: !1, value: i32 7)
4002 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4003 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4004 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4005 OPTIONAL(name, MDStringField, ); \
4006 OPTIONAL(type, MDField, ); \
4007 REQUIRED(value, MDField, );
4009 #undef VISIT_MD_FIELDS
4011 Result = GET_OR_DISTINCT(DITemplateValueParameter,
4012 (Context, tag.Val, name.Val, type.Val, value.Val));
4016 /// ParseDIGlobalVariable:
4017 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4018 /// file: !1, line: 7, type: !2, isLocal: false,
4019 /// isDefinition: true, variable: i32* @foo,
4020 /// declaration: !3)
4021 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4022 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4023 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4024 OPTIONAL(scope, MDField, ); \
4025 OPTIONAL(linkageName, MDStringField, ); \
4026 OPTIONAL(file, MDField, ); \
4027 OPTIONAL(line, LineField, ); \
4028 OPTIONAL(type, MDField, ); \
4029 OPTIONAL(isLocal, MDBoolField, ); \
4030 OPTIONAL(isDefinition, MDBoolField, (true)); \
4031 OPTIONAL(variable, MDConstant, ); \
4032 OPTIONAL(declaration, MDField, );
4034 #undef VISIT_MD_FIELDS
4036 Result = GET_OR_DISTINCT(DIGlobalVariable,
4037 (Context, scope.Val, name.Val, linkageName.Val,
4038 file.Val, line.Val, type.Val, isLocal.Val,
4039 isDefinition.Val, variable.Val, declaration.Val));
4043 /// ParseDILocalVariable:
4044 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4045 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
4046 /// ::= !DILocalVariable(scope: !0, name: "foo",
4047 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
4048 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4049 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4050 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4051 OPTIONAL(name, MDStringField, ); \
4052 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
4053 OPTIONAL(file, MDField, ); \
4054 OPTIONAL(line, LineField, ); \
4055 OPTIONAL(type, MDField, ); \
4056 OPTIONAL(flags, DIFlagField, );
4058 #undef VISIT_MD_FIELDS
4060 Result = GET_OR_DISTINCT(DILocalVariable,
4061 (Context, scope.Val, name.Val, file.Val, line.Val,
4062 type.Val, arg.Val, flags.Val));
4066 /// ParseDIExpression:
4067 /// ::= !DIExpression(0, 7, -1)
4068 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4069 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4072 if (ParseToken(lltok::lparen, "expected '(' here"))
4075 SmallVector<uint64_t, 8> Elements;
4076 if (Lex.getKind() != lltok::rparen)
4078 if (Lex.getKind() == lltok::DwarfOp) {
4079 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4081 Elements.push_back(Op);
4084 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4087 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4088 return TokError("expected unsigned integer");
4090 auto &U = Lex.getAPSIntVal();
4091 if (U.ugt(UINT64_MAX))
4092 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4093 Elements.push_back(U.getZExtValue());
4095 } while (EatIfPresent(lltok::comma));
4097 if (ParseToken(lltok::rparen, "expected ')' here"))
4100 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4104 /// ParseDIObjCProperty:
4105 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4106 /// getter: "getFoo", attributes: 7, type: !2)
4107 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4108 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4109 OPTIONAL(name, MDStringField, ); \
4110 OPTIONAL(file, MDField, ); \
4111 OPTIONAL(line, LineField, ); \
4112 OPTIONAL(setter, MDStringField, ); \
4113 OPTIONAL(getter, MDStringField, ); \
4114 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4115 OPTIONAL(type, MDField, );
4117 #undef VISIT_MD_FIELDS
4119 Result = GET_OR_DISTINCT(DIObjCProperty,
4120 (Context, name.Val, file.Val, line.Val, setter.Val,
4121 getter.Val, attributes.Val, type.Val));
4125 /// ParseDIImportedEntity:
4126 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4127 /// line: 7, name: "foo")
4128 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4129 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4130 REQUIRED(tag, DwarfTagField, ); \
4131 REQUIRED(scope, MDField, ); \
4132 OPTIONAL(entity, MDField, ); \
4133 OPTIONAL(line, LineField, ); \
4134 OPTIONAL(name, MDStringField, );
4136 #undef VISIT_MD_FIELDS
4138 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4139 entity.Val, line.Val, name.Val));
4143 #undef PARSE_MD_FIELD
4145 #undef REQUIRE_FIELD
4146 #undef DECLARE_FIELD
4148 /// ParseMetadataAsValue
4149 /// ::= metadata i32 %local
4150 /// ::= metadata i32 @global
4151 /// ::= metadata i32 7
4153 /// ::= metadata !{...}
4154 /// ::= metadata !"string"
4155 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4156 // Note: the type 'metadata' has already been parsed.
4158 if (ParseMetadata(MD, &PFS))
4161 V = MetadataAsValue::get(Context, MD);
4165 /// ParseValueAsMetadata
4169 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4170 PerFunctionState *PFS) {
4173 if (ParseType(Ty, TypeMsg, Loc))
4175 if (Ty->isMetadataTy())
4176 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4179 if (ParseValue(Ty, V, PFS))
4182 MD = ValueAsMetadata::get(V);
4193 /// ::= !DILocation(...)
4194 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4195 if (Lex.getKind() == lltok::MetadataVar) {
4197 if (ParseSpecializedMDNode(N))
4205 if (Lex.getKind() != lltok::exclaim)
4206 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4209 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4213 // ::= '!' STRINGCONSTANT
4214 if (Lex.getKind() == lltok::StringConstant) {
4216 if (ParseMDString(S))
4226 if (ParseMDNodeTail(N))
4233 //===----------------------------------------------------------------------===//
4234 // Function Parsing.
4235 //===----------------------------------------------------------------------===//
4237 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4238 PerFunctionState *PFS,
4239 OperatorConstraint OC) {
4240 if (Ty->isFunctionTy())
4241 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4243 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4246 return Error(ID.Loc, "Catchpad value required in this position");
4248 return Error(ID.Loc, "Cleanuppad value required in this position");
4250 llvm_unreachable("Unexpected constraint kind");
4255 case ValID::t_LocalID:
4256 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4257 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4258 return V == nullptr;
4259 case ValID::t_LocalName:
4260 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4261 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4262 return V == nullptr;
4263 case ValID::t_InlineAsm: {
4264 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4265 return Error(ID.Loc, "invalid type for inline asm constraint string");
4266 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4267 (ID.UIntVal >> 1) & 1,
4268 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4271 case ValID::t_GlobalName:
4272 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4273 return V == nullptr;
4274 case ValID::t_GlobalID:
4275 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4276 return V == nullptr;
4277 case ValID::t_APSInt:
4278 if (!Ty->isIntegerTy())
4279 return Error(ID.Loc, "integer constant must have integer type");
4280 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4281 V = ConstantInt::get(Context, ID.APSIntVal);
4283 case ValID::t_APFloat:
4284 if (!Ty->isFloatingPointTy() ||
4285 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4286 return Error(ID.Loc, "floating point constant invalid for type");
4288 // The lexer has no type info, so builds all half, float, and double FP
4289 // constants as double. Fix this here. Long double does not need this.
4290 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4293 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4295 else if (Ty->isFloatTy())
4296 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4299 V = ConstantFP::get(Context, ID.APFloatVal);
4301 if (V->getType() != Ty)
4302 return Error(ID.Loc, "floating point constant does not have type '" +
4303 getTypeString(Ty) + "'");
4307 if (!Ty->isPointerTy())
4308 return Error(ID.Loc, "null must be a pointer type");
4309 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4311 case ValID::t_Undef:
4312 // FIXME: LabelTy should not be a first-class type.
4313 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4314 return Error(ID.Loc, "invalid type for undef constant");
4315 V = UndefValue::get(Ty);
4317 case ValID::t_EmptyArray:
4318 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4319 return Error(ID.Loc, "invalid empty array initializer");
4320 V = UndefValue::get(Ty);
4323 // FIXME: LabelTy should not be a first-class type.
4324 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4325 return Error(ID.Loc, "invalid type for null constant");
4326 V = Constant::getNullValue(Ty);
4329 if (!Ty->isTokenTy())
4330 return Error(ID.Loc, "invalid type for none constant");
4331 V = Constant::getNullValue(Ty);
4333 case ValID::t_Constant:
4334 if (ID.ConstantVal->getType() != Ty)
4335 return Error(ID.Loc, "constant expression type mismatch");
4339 case ValID::t_ConstantStruct:
4340 case ValID::t_PackedConstantStruct:
4341 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4342 if (ST->getNumElements() != ID.UIntVal)
4343 return Error(ID.Loc,
4344 "initializer with struct type has wrong # elements");
4345 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4346 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4348 // Verify that the elements are compatible with the structtype.
4349 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4350 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4351 return Error(ID.Loc, "element " + Twine(i) +
4352 " of struct initializer doesn't match struct element type");
4354 V = ConstantStruct::get(
4355 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4357 return Error(ID.Loc, "constant expression type mismatch");
4360 llvm_unreachable("Invalid ValID");
4363 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4366 auto Loc = Lex.getLoc();
4367 if (ParseValID(ID, /*PFS=*/nullptr))
4370 case ValID::t_APSInt:
4371 case ValID::t_APFloat:
4372 case ValID::t_Undef:
4373 case ValID::t_Constant:
4374 case ValID::t_ConstantStruct:
4375 case ValID::t_PackedConstantStruct: {
4377 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4379 assert(isa<Constant>(V) && "Expected a constant value");
4380 C = cast<Constant>(V);
4384 return Error(Loc, "expected a constant value");
4388 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4389 OperatorConstraint OC) {
4392 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4395 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4397 return ParseType(Ty) ||
4398 ParseValue(Ty, V, PFS);
4401 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4402 PerFunctionState &PFS) {
4405 if (ParseTypeAndValue(V, PFS)) return true;
4406 if (!isa<BasicBlock>(V))
4407 return Error(Loc, "expected a basic block");
4408 BB = cast<BasicBlock>(V);
4414 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4415 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4416 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4417 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4418 // Parse the linkage.
4419 LocTy LinkageLoc = Lex.getLoc();
4422 unsigned Visibility;
4423 unsigned DLLStorageClass;
4424 AttrBuilder RetAttrs;
4426 Type *RetType = nullptr;
4427 LocTy RetTypeLoc = Lex.getLoc();
4428 if (ParseOptionalLinkage(Linkage) ||
4429 ParseOptionalVisibility(Visibility) ||
4430 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4431 ParseOptionalCallingConv(CC) ||
4432 ParseOptionalReturnAttrs(RetAttrs) ||
4433 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4436 // Verify that the linkage is ok.
4437 switch ((GlobalValue::LinkageTypes)Linkage) {
4438 case GlobalValue::ExternalLinkage:
4439 break; // always ok.
4440 case GlobalValue::ExternalWeakLinkage:
4442 return Error(LinkageLoc, "invalid linkage for function definition");
4444 case GlobalValue::PrivateLinkage:
4445 case GlobalValue::InternalLinkage:
4446 case GlobalValue::AvailableExternallyLinkage:
4447 case GlobalValue::LinkOnceAnyLinkage:
4448 case GlobalValue::LinkOnceODRLinkage:
4449 case GlobalValue::WeakAnyLinkage:
4450 case GlobalValue::WeakODRLinkage:
4452 return Error(LinkageLoc, "invalid linkage for function declaration");
4454 case GlobalValue::AppendingLinkage:
4455 case GlobalValue::CommonLinkage:
4456 return Error(LinkageLoc, "invalid function linkage type");
4459 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4460 return Error(LinkageLoc,
4461 "symbol with local linkage must have default visibility");
4463 if (!FunctionType::isValidReturnType(RetType))
4464 return Error(RetTypeLoc, "invalid function return type");
4466 LocTy NameLoc = Lex.getLoc();
4468 std::string FunctionName;
4469 if (Lex.getKind() == lltok::GlobalVar) {
4470 FunctionName = Lex.getStrVal();
4471 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4472 unsigned NameID = Lex.getUIntVal();
4474 if (NameID != NumberedVals.size())
4475 return TokError("function expected to be numbered '%" +
4476 Twine(NumberedVals.size()) + "'");
4478 return TokError("expected function name");
4483 if (Lex.getKind() != lltok::lparen)
4484 return TokError("expected '(' in function argument list");
4486 SmallVector<ArgInfo, 8> ArgList;
4488 AttrBuilder FuncAttrs;
4489 std::vector<unsigned> FwdRefAttrGrps;
4491 std::string Section;
4495 LocTy UnnamedAddrLoc;
4496 Constant *Prefix = nullptr;
4497 Constant *Prologue = nullptr;
4498 Constant *PersonalityFn = nullptr;
4501 if (ParseArgumentList(ArgList, isVarArg) ||
4502 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4504 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4506 (EatIfPresent(lltok::kw_section) &&
4507 ParseStringConstant(Section)) ||
4508 parseOptionalComdat(FunctionName, C) ||
4509 ParseOptionalAlignment(Alignment) ||
4510 (EatIfPresent(lltok::kw_gc) &&
4511 ParseStringConstant(GC)) ||
4512 (EatIfPresent(lltok::kw_prefix) &&
4513 ParseGlobalTypeAndValue(Prefix)) ||
4514 (EatIfPresent(lltok::kw_prologue) &&
4515 ParseGlobalTypeAndValue(Prologue)) ||
4516 (EatIfPresent(lltok::kw_personality) &&
4517 ParseGlobalTypeAndValue(PersonalityFn)))
4520 if (FuncAttrs.contains(Attribute::Builtin))
4521 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4523 // If the alignment was parsed as an attribute, move to the alignment field.
4524 if (FuncAttrs.hasAlignmentAttr()) {
4525 Alignment = FuncAttrs.getAlignment();
4526 FuncAttrs.removeAttribute(Attribute::Alignment);
4529 // Okay, if we got here, the function is syntactically valid. Convert types
4530 // and do semantic checks.
4531 std::vector<Type*> ParamTypeList;
4532 SmallVector<AttributeSet, 8> Attrs;
4534 if (RetAttrs.hasAttributes())
4535 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4536 AttributeSet::ReturnIndex,
4539 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4540 ParamTypeList.push_back(ArgList[i].Ty);
4541 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4542 AttrBuilder B(ArgList[i].Attrs, i + 1);
4543 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4547 if (FuncAttrs.hasAttributes())
4548 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4549 AttributeSet::FunctionIndex,
4552 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4554 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4555 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4558 FunctionType::get(RetType, ParamTypeList, isVarArg);
4559 PointerType *PFT = PointerType::getUnqual(FT);
4562 if (!FunctionName.empty()) {
4563 // If this was a definition of a forward reference, remove the definition
4564 // from the forward reference table and fill in the forward ref.
4565 auto FRVI = ForwardRefVals.find(FunctionName);
4566 if (FRVI != ForwardRefVals.end()) {
4567 Fn = M->getFunction(FunctionName);
4569 return Error(FRVI->second.second, "invalid forward reference to "
4570 "function as global value!");
4571 if (Fn->getType() != PFT)
4572 return Error(FRVI->second.second, "invalid forward reference to "
4573 "function '" + FunctionName + "' with wrong type!");
4575 ForwardRefVals.erase(FRVI);
4576 } else if ((Fn = M->getFunction(FunctionName))) {
4577 // Reject redefinitions.
4578 return Error(NameLoc, "invalid redefinition of function '" +
4579 FunctionName + "'");
4580 } else if (M->getNamedValue(FunctionName)) {
4581 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4585 // If this is a definition of a forward referenced function, make sure the
4587 auto I = ForwardRefValIDs.find(NumberedVals.size());
4588 if (I != ForwardRefValIDs.end()) {
4589 Fn = cast<Function>(I->second.first);
4590 if (Fn->getType() != PFT)
4591 return Error(NameLoc, "type of definition and forward reference of '@" +
4592 Twine(NumberedVals.size()) + "' disagree");
4593 ForwardRefValIDs.erase(I);
4598 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4599 else // Move the forward-reference to the correct spot in the module.
4600 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4602 if (FunctionName.empty())
4603 NumberedVals.push_back(Fn);
4605 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4606 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4607 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4608 Fn->setCallingConv(CC);
4609 Fn->setAttributes(PAL);
4610 Fn->setUnnamedAddr(UnnamedAddr);
4611 Fn->setAlignment(Alignment);
4612 Fn->setSection(Section);
4614 Fn->setPersonalityFn(PersonalityFn);
4615 if (!GC.empty()) Fn->setGC(GC.c_str());
4616 Fn->setPrefixData(Prefix);
4617 Fn->setPrologueData(Prologue);
4618 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4620 // Add all of the arguments we parsed to the function.
4621 Function::arg_iterator ArgIt = Fn->arg_begin();
4622 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4623 // If the argument has a name, insert it into the argument symbol table.
4624 if (ArgList[i].Name.empty()) continue;
4626 // Set the name, if it conflicted, it will be auto-renamed.
4627 ArgIt->setName(ArgList[i].Name);
4629 if (ArgIt->getName() != ArgList[i].Name)
4630 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4631 ArgList[i].Name + "'");
4637 // Check the declaration has no block address forward references.
4639 if (FunctionName.empty()) {
4640 ID.Kind = ValID::t_GlobalID;
4641 ID.UIntVal = NumberedVals.size() - 1;
4643 ID.Kind = ValID::t_GlobalName;
4644 ID.StrVal = FunctionName;
4646 auto Blocks = ForwardRefBlockAddresses.find(ID);
4647 if (Blocks != ForwardRefBlockAddresses.end())
4648 return Error(Blocks->first.Loc,
4649 "cannot take blockaddress inside a declaration");
4653 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4655 if (FunctionNumber == -1) {
4656 ID.Kind = ValID::t_GlobalName;
4657 ID.StrVal = F.getName();
4659 ID.Kind = ValID::t_GlobalID;
4660 ID.UIntVal = FunctionNumber;
4663 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4664 if (Blocks == P.ForwardRefBlockAddresses.end())
4667 for (const auto &I : Blocks->second) {
4668 const ValID &BBID = I.first;
4669 GlobalValue *GV = I.second;
4671 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4672 "Expected local id or name");
4674 if (BBID.Kind == ValID::t_LocalName)
4675 BB = GetBB(BBID.StrVal, BBID.Loc);
4677 BB = GetBB(BBID.UIntVal, BBID.Loc);
4679 return P.Error(BBID.Loc, "referenced value is not a basic block");
4681 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4682 GV->eraseFromParent();
4685 P.ForwardRefBlockAddresses.erase(Blocks);
4689 /// ParseFunctionBody
4690 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4691 bool LLParser::ParseFunctionBody(Function &Fn) {
4692 if (Lex.getKind() != lltok::lbrace)
4693 return TokError("expected '{' in function body");
4694 Lex.Lex(); // eat the {.
4696 int FunctionNumber = -1;
4697 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4699 PerFunctionState PFS(*this, Fn, FunctionNumber);
4701 // Resolve block addresses and allow basic blocks to be forward-declared
4702 // within this function.
4703 if (PFS.resolveForwardRefBlockAddresses())
4705 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4707 // We need at least one basic block.
4708 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4709 return TokError("function body requires at least one basic block");
4711 while (Lex.getKind() != lltok::rbrace &&
4712 Lex.getKind() != lltok::kw_uselistorder)
4713 if (ParseBasicBlock(PFS)) return true;
4715 while (Lex.getKind() != lltok::rbrace)
4716 if (ParseUseListOrder(&PFS))
4722 // Verify function is ok.
4723 return PFS.FinishFunction();
4727 /// ::= LabelStr? Instruction*
4728 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4729 // If this basic block starts out with a name, remember it.
4731 LocTy NameLoc = Lex.getLoc();
4732 if (Lex.getKind() == lltok::LabelStr) {
4733 Name = Lex.getStrVal();
4737 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4739 return Error(NameLoc,
4740 "unable to create block named '" + Name + "'");
4742 std::string NameStr;
4744 // Parse the instructions in this block until we get a terminator.
4747 // This instruction may have three possibilities for a name: a) none
4748 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4749 LocTy NameLoc = Lex.getLoc();
4753 if (Lex.getKind() == lltok::LocalVarID) {
4754 NameID = Lex.getUIntVal();
4756 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4758 } else if (Lex.getKind() == lltok::LocalVar) {
4759 NameStr = Lex.getStrVal();
4761 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4765 switch (ParseInstruction(Inst, BB, PFS)) {
4766 default: llvm_unreachable("Unknown ParseInstruction result!");
4767 case InstError: return true;
4769 BB->getInstList().push_back(Inst);
4771 // With a normal result, we check to see if the instruction is followed by
4772 // a comma and metadata.
4773 if (EatIfPresent(lltok::comma))
4774 if (ParseInstructionMetadata(*Inst))
4777 case InstExtraComma:
4778 BB->getInstList().push_back(Inst);
4780 // If the instruction parser ate an extra comma at the end of it, it
4781 // *must* be followed by metadata.
4782 if (ParseInstructionMetadata(*Inst))
4787 // Set the name on the instruction.
4788 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4789 } while (!isa<TerminatorInst>(Inst));
4794 //===----------------------------------------------------------------------===//
4795 // Instruction Parsing.
4796 //===----------------------------------------------------------------------===//
4798 /// ParseInstruction - Parse one of the many different instructions.
4800 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4801 PerFunctionState &PFS) {
4802 lltok::Kind Token = Lex.getKind();
4803 if (Token == lltok::Eof)
4804 return TokError("found end of file when expecting more instructions");
4805 LocTy Loc = Lex.getLoc();
4806 unsigned KeywordVal = Lex.getUIntVal();
4807 Lex.Lex(); // Eat the keyword.
4810 default: return Error(Loc, "expected instruction opcode");
4811 // Terminator Instructions.
4812 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4813 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4814 case lltok::kw_br: return ParseBr(Inst, PFS);
4815 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4816 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4817 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4818 case lltok::kw_resume: return ParseResume(Inst, PFS);
4819 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4820 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4821 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4822 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4823 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4824 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4825 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4826 // Binary Operators.
4830 case lltok::kw_shl: {
4831 bool NUW = EatIfPresent(lltok::kw_nuw);
4832 bool NSW = EatIfPresent(lltok::kw_nsw);
4833 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4835 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4837 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4838 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4841 case lltok::kw_fadd:
4842 case lltok::kw_fsub:
4843 case lltok::kw_fmul:
4844 case lltok::kw_fdiv:
4845 case lltok::kw_frem: {
4846 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4847 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4851 Inst->setFastMathFlags(FMF);
4855 case lltok::kw_sdiv:
4856 case lltok::kw_udiv:
4857 case lltok::kw_lshr:
4858 case lltok::kw_ashr: {
4859 bool Exact = EatIfPresent(lltok::kw_exact);
4861 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4862 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4866 case lltok::kw_urem:
4867 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4870 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4871 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4872 case lltok::kw_fcmp: {
4873 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4874 int Res = ParseCompare(Inst, PFS, KeywordVal);
4878 Inst->setFastMathFlags(FMF);
4883 case lltok::kw_trunc:
4884 case lltok::kw_zext:
4885 case lltok::kw_sext:
4886 case lltok::kw_fptrunc:
4887 case lltok::kw_fpext:
4888 case lltok::kw_bitcast:
4889 case lltok::kw_addrspacecast:
4890 case lltok::kw_uitofp:
4891 case lltok::kw_sitofp:
4892 case lltok::kw_fptoui:
4893 case lltok::kw_fptosi:
4894 case lltok::kw_inttoptr:
4895 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4897 case lltok::kw_select: return ParseSelect(Inst, PFS);
4898 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4899 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4900 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4901 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4902 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4903 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4905 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4906 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4907 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4908 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
4910 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4911 case lltok::kw_load: return ParseLoad(Inst, PFS);
4912 case lltok::kw_store: return ParseStore(Inst, PFS);
4913 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4914 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4915 case lltok::kw_fence: return ParseFence(Inst, PFS);
4916 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4917 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4918 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4922 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4923 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4924 if (Opc == Instruction::FCmp) {
4925 switch (Lex.getKind()) {
4926 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4927 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4928 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4929 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4930 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4931 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4932 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4933 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4934 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4935 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4936 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4937 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4938 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4939 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4940 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4941 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4942 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4945 switch (Lex.getKind()) {
4946 default: return TokError("expected icmp predicate (e.g. 'eq')");
4947 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4948 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4949 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4950 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4951 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4952 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4953 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4954 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4955 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4956 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4963 //===----------------------------------------------------------------------===//
4964 // Terminator Instructions.
4965 //===----------------------------------------------------------------------===//
4967 /// ParseRet - Parse a return instruction.
4968 /// ::= 'ret' void (',' !dbg, !1)*
4969 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4970 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4971 PerFunctionState &PFS) {
4972 SMLoc TypeLoc = Lex.getLoc();
4974 if (ParseType(Ty, true /*void allowed*/)) return true;
4976 Type *ResType = PFS.getFunction().getReturnType();
4978 if (Ty->isVoidTy()) {
4979 if (!ResType->isVoidTy())
4980 return Error(TypeLoc, "value doesn't match function result type '" +
4981 getTypeString(ResType) + "'");
4983 Inst = ReturnInst::Create(Context);
4988 if (ParseValue(Ty, RV, PFS)) return true;
4990 if (ResType != RV->getType())
4991 return Error(TypeLoc, "value doesn't match function result type '" +
4992 getTypeString(ResType) + "'");
4994 Inst = ReturnInst::Create(Context, RV);
5000 /// ::= 'br' TypeAndValue
5001 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5002 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5005 BasicBlock *Op1, *Op2;
5006 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5008 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5009 Inst = BranchInst::Create(BB);
5013 if (Op0->getType() != Type::getInt1Ty(Context))
5014 return Error(Loc, "branch condition must have 'i1' type");
5016 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5017 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5018 ParseToken(lltok::comma, "expected ',' after true destination") ||
5019 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5022 Inst = BranchInst::Create(Op1, Op2, Op0);
5028 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5030 /// ::= (TypeAndValue ',' TypeAndValue)*
5031 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5032 LocTy CondLoc, BBLoc;
5034 BasicBlock *DefaultBB;
5035 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5036 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5037 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5038 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5041 if (!Cond->getType()->isIntegerTy())
5042 return Error(CondLoc, "switch condition must have integer type");
5044 // Parse the jump table pairs.
5045 SmallPtrSet<Value*, 32> SeenCases;
5046 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5047 while (Lex.getKind() != lltok::rsquare) {
5051 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5052 ParseToken(lltok::comma, "expected ',' after case value") ||
5053 ParseTypeAndBasicBlock(DestBB, PFS))
5056 if (!SeenCases.insert(Constant).second)
5057 return Error(CondLoc, "duplicate case value in switch");
5058 if (!isa<ConstantInt>(Constant))
5059 return Error(CondLoc, "case value is not a constant integer");
5061 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5064 Lex.Lex(); // Eat the ']'.
5066 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5067 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5068 SI->addCase(Table[i].first, Table[i].second);
5075 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5076 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5079 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5080 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5081 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5084 if (!Address->getType()->isPointerTy())
5085 return Error(AddrLoc, "indirectbr address must have pointer type");
5087 // Parse the destination list.
5088 SmallVector<BasicBlock*, 16> DestList;
5090 if (Lex.getKind() != lltok::rsquare) {
5092 if (ParseTypeAndBasicBlock(DestBB, PFS))
5094 DestList.push_back(DestBB);
5096 while (EatIfPresent(lltok::comma)) {
5097 if (ParseTypeAndBasicBlock(DestBB, PFS))
5099 DestList.push_back(DestBB);
5103 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5106 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5107 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5108 IBI->addDestination(DestList[i]);
5115 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5116 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5117 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5118 LocTy CallLoc = Lex.getLoc();
5119 AttrBuilder RetAttrs, FnAttrs;
5120 std::vector<unsigned> FwdRefAttrGrps;
5123 Type *RetType = nullptr;
5126 SmallVector<ParamInfo, 16> ArgList;
5127 SmallVector<OperandBundleDef, 2> BundleList;
5129 BasicBlock *NormalBB, *UnwindBB;
5130 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5131 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5132 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5133 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5135 ParseOptionalOperandBundles(BundleList, PFS) ||
5136 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5137 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5138 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5139 ParseTypeAndBasicBlock(UnwindBB, PFS))
5142 // If RetType is a non-function pointer type, then this is the short syntax
5143 // for the call, which means that RetType is just the return type. Infer the
5144 // rest of the function argument types from the arguments that are present.
5145 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5147 // Pull out the types of all of the arguments...
5148 std::vector<Type*> ParamTypes;
5149 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5150 ParamTypes.push_back(ArgList[i].V->getType());
5152 if (!FunctionType::isValidReturnType(RetType))
5153 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5155 Ty = FunctionType::get(RetType, ParamTypes, false);
5160 // Look up the callee.
5162 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5165 // Set up the Attribute for the function.
5166 SmallVector<AttributeSet, 8> Attrs;
5167 if (RetAttrs.hasAttributes())
5168 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5169 AttributeSet::ReturnIndex,
5172 SmallVector<Value*, 8> Args;
5174 // Loop through FunctionType's arguments and ensure they are specified
5175 // correctly. Also, gather any parameter attributes.
5176 FunctionType::param_iterator I = Ty->param_begin();
5177 FunctionType::param_iterator E = Ty->param_end();
5178 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5179 Type *ExpectedTy = nullptr;
5182 } else if (!Ty->isVarArg()) {
5183 return Error(ArgList[i].Loc, "too many arguments specified");
5186 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5187 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5188 getTypeString(ExpectedTy) + "'");
5189 Args.push_back(ArgList[i].V);
5190 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5191 AttrBuilder B(ArgList[i].Attrs, i + 1);
5192 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5197 return Error(CallLoc, "not enough parameters specified for call");
5199 if (FnAttrs.hasAttributes()) {
5200 if (FnAttrs.hasAlignmentAttr())
5201 return Error(CallLoc, "invoke instructions may not have an alignment");
5203 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5204 AttributeSet::FunctionIndex,
5208 // Finish off the Attribute and check them
5209 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5212 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5213 II->setCallingConv(CC);
5214 II->setAttributes(PAL);
5215 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5221 /// ::= 'resume' TypeAndValue
5222 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5223 Value *Exn; LocTy ExnLoc;
5224 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5227 ResumeInst *RI = ResumeInst::Create(Exn);
5232 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5233 PerFunctionState &PFS) {
5234 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5237 while (Lex.getKind() != lltok::rsquare) {
5238 // If this isn't the first argument, we need a comma.
5239 if (!Args.empty() &&
5240 ParseToken(lltok::comma, "expected ',' in argument list"))
5243 // Parse the argument.
5245 Type *ArgTy = nullptr;
5246 if (ParseType(ArgTy, ArgLoc))
5250 if (ArgTy->isMetadataTy()) {
5251 if (ParseMetadataAsValue(V, PFS))
5254 if (ParseValue(ArgTy, V, PFS))
5260 Lex.Lex(); // Lex the ']'.
5265 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5266 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5267 Value *CleanupPad = nullptr;
5269 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5272 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5275 BasicBlock *UnwindBB = nullptr;
5276 if (Lex.getKind() == lltok::kw_to) {
5278 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5281 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5286 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5291 /// ::= 'catchret' Value 'to' TypeAndValue
5292 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5293 Value *CatchPad = nullptr;
5295 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5299 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5300 ParseTypeAndBasicBlock(BB, PFS))
5303 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5308 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5309 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5310 SmallVector<Value *, 8> Args;
5311 if (ParseExceptionArgs(Args, PFS))
5314 BasicBlock *NormalBB, *UnwindBB;
5315 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5316 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5317 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5318 ParseTypeAndBasicBlock(UnwindBB, PFS))
5321 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5325 /// ParseTerminatePad
5326 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5327 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5328 SmallVector<Value *, 8> Args;
5329 if (ParseExceptionArgs(Args, PFS))
5332 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5335 BasicBlock *UnwindBB = nullptr;
5336 if (Lex.getKind() == lltok::kw_to) {
5338 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5341 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5346 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5351 /// ::= 'cleanuppad' ParamList
5352 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5353 SmallVector<Value *, 8> Args;
5354 if (ParseExceptionArgs(Args, PFS))
5357 Inst = CleanupPadInst::Create(Context, Args);
5361 /// ParseCatchEndPad
5362 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5363 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5364 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5367 BasicBlock *UnwindBB = nullptr;
5368 if (Lex.getKind() == lltok::kw_to) {
5370 if (Lex.getKind() == lltok::kw_caller) {
5376 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5381 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5385 /// ParseCatchEndPad
5386 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5387 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5388 Value *CleanupPad = nullptr;
5390 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5393 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5396 BasicBlock *UnwindBB = nullptr;
5397 if (Lex.getKind() == lltok::kw_to) {
5399 if (Lex.getKind() == lltok::kw_caller) {
5405 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5410 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5414 //===----------------------------------------------------------------------===//
5415 // Binary Operators.
5416 //===----------------------------------------------------------------------===//
5419 /// ::= ArithmeticOps TypeAndValue ',' Value
5421 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5422 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5423 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5424 unsigned Opc, unsigned OperandType) {
5425 LocTy Loc; Value *LHS, *RHS;
5426 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5427 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5428 ParseValue(LHS->getType(), RHS, PFS))
5432 switch (OperandType) {
5433 default: llvm_unreachable("Unknown operand type!");
5434 case 0: // int or FP.
5435 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5436 LHS->getType()->isFPOrFPVectorTy();
5438 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5439 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5443 return Error(Loc, "invalid operand type for instruction");
5445 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5450 /// ::= ArithmeticOps TypeAndValue ',' Value {
5451 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5453 LocTy Loc; Value *LHS, *RHS;
5454 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5455 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5456 ParseValue(LHS->getType(), RHS, PFS))
5459 if (!LHS->getType()->isIntOrIntVectorTy())
5460 return Error(Loc,"instruction requires integer or integer vector operands");
5462 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5468 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5469 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5470 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5472 // Parse the integer/fp comparison predicate.
5476 if (ParseCmpPredicate(Pred, Opc) ||
5477 ParseTypeAndValue(LHS, Loc, PFS) ||
5478 ParseToken(lltok::comma, "expected ',' after compare value") ||
5479 ParseValue(LHS->getType(), RHS, PFS))
5482 if (Opc == Instruction::FCmp) {
5483 if (!LHS->getType()->isFPOrFPVectorTy())
5484 return Error(Loc, "fcmp requires floating point operands");
5485 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5487 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5488 if (!LHS->getType()->isIntOrIntVectorTy() &&
5489 !LHS->getType()->getScalarType()->isPointerTy())
5490 return Error(Loc, "icmp requires integer operands");
5491 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5496 //===----------------------------------------------------------------------===//
5497 // Other Instructions.
5498 //===----------------------------------------------------------------------===//
5502 /// ::= CastOpc TypeAndValue 'to' Type
5503 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5507 Type *DestTy = nullptr;
5508 if (ParseTypeAndValue(Op, Loc, PFS) ||
5509 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5513 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5514 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5515 return Error(Loc, "invalid cast opcode for cast from '" +
5516 getTypeString(Op->getType()) + "' to '" +
5517 getTypeString(DestTy) + "'");
5519 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5524 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5525 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5527 Value *Op0, *Op1, *Op2;
5528 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5529 ParseToken(lltok::comma, "expected ',' after select condition") ||
5530 ParseTypeAndValue(Op1, PFS) ||
5531 ParseToken(lltok::comma, "expected ',' after select value") ||
5532 ParseTypeAndValue(Op2, PFS))
5535 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5536 return Error(Loc, Reason);
5538 Inst = SelectInst::Create(Op0, Op1, Op2);
5543 /// ::= 'va_arg' TypeAndValue ',' Type
5544 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5546 Type *EltTy = nullptr;
5548 if (ParseTypeAndValue(Op, PFS) ||
5549 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5550 ParseType(EltTy, TypeLoc))
5553 if (!EltTy->isFirstClassType())
5554 return Error(TypeLoc, "va_arg requires operand with first class type");
5556 Inst = new VAArgInst(Op, EltTy);
5560 /// ParseExtractElement
5561 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5562 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5565 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5566 ParseToken(lltok::comma, "expected ',' after extract value") ||
5567 ParseTypeAndValue(Op1, PFS))
5570 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5571 return Error(Loc, "invalid extractelement operands");
5573 Inst = ExtractElementInst::Create(Op0, Op1);
5577 /// ParseInsertElement
5578 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5579 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5581 Value *Op0, *Op1, *Op2;
5582 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5583 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5584 ParseTypeAndValue(Op1, PFS) ||
5585 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5586 ParseTypeAndValue(Op2, PFS))
5589 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5590 return Error(Loc, "invalid insertelement operands");
5592 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5596 /// ParseShuffleVector
5597 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5598 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5600 Value *Op0, *Op1, *Op2;
5601 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5602 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5603 ParseTypeAndValue(Op1, PFS) ||
5604 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5605 ParseTypeAndValue(Op2, PFS))
5608 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5609 return Error(Loc, "invalid shufflevector operands");
5611 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5616 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5617 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5618 Type *Ty = nullptr; LocTy TypeLoc;
5621 if (ParseType(Ty, TypeLoc) ||
5622 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5623 ParseValue(Ty, Op0, PFS) ||
5624 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5625 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5626 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5629 bool AteExtraComma = false;
5630 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5632 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5634 if (!EatIfPresent(lltok::comma))
5637 if (Lex.getKind() == lltok::MetadataVar) {
5638 AteExtraComma = true;
5642 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5643 ParseValue(Ty, Op0, PFS) ||
5644 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5645 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5646 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5650 if (!Ty->isFirstClassType())
5651 return Error(TypeLoc, "phi node must have first class type");
5653 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5654 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5655 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5657 return AteExtraComma ? InstExtraComma : InstNormal;
5661 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5663 /// ::= 'catch' TypeAndValue
5665 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5666 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5667 Type *Ty = nullptr; LocTy TyLoc;
5669 if (ParseType(Ty, TyLoc))
5672 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5673 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5675 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5676 LandingPadInst::ClauseType CT;
5677 if (EatIfPresent(lltok::kw_catch))
5678 CT = LandingPadInst::Catch;
5679 else if (EatIfPresent(lltok::kw_filter))
5680 CT = LandingPadInst::Filter;
5682 return TokError("expected 'catch' or 'filter' clause type");
5686 if (ParseTypeAndValue(V, VLoc, PFS))
5689 // A 'catch' type expects a non-array constant. A filter clause expects an
5691 if (CT == LandingPadInst::Catch) {
5692 if (isa<ArrayType>(V->getType()))
5693 Error(VLoc, "'catch' clause has an invalid type");
5695 if (!isa<ArrayType>(V->getType()))
5696 Error(VLoc, "'filter' clause has an invalid type");
5699 Constant *CV = dyn_cast<Constant>(V);
5701 return Error(VLoc, "clause argument must be a constant");
5705 Inst = LP.release();
5710 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5711 /// ParameterList OptionalAttrs
5712 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5713 /// ParameterList OptionalAttrs
5714 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5715 /// ParameterList OptionalAttrs
5716 /// ::= 'notail' 'call' OptionalCallingConv OptionalAttrs Type Value
5717 /// ParameterList OptionalAttrs
5718 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5719 CallInst::TailCallKind TCK) {
5720 AttrBuilder RetAttrs, FnAttrs;
5721 std::vector<unsigned> FwdRefAttrGrps;
5724 Type *RetType = nullptr;
5727 SmallVector<ParamInfo, 16> ArgList;
5728 SmallVector<OperandBundleDef, 2> BundleList;
5729 LocTy CallLoc = Lex.getLoc();
5731 if ((TCK != CallInst::TCK_None &&
5732 ParseToken(lltok::kw_call,
5733 "expected 'tail call', 'musttail call', or 'notail call'")) ||
5734 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5735 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5736 ParseValID(CalleeID) ||
5737 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5738 PFS.getFunction().isVarArg()) ||
5739 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5740 ParseOptionalOperandBundles(BundleList, PFS))
5743 // If RetType is a non-function pointer type, then this is the short syntax
5744 // for the call, which means that RetType is just the return type. Infer the
5745 // rest of the function argument types from the arguments that are present.
5746 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5748 // Pull out the types of all of the arguments...
5749 std::vector<Type*> ParamTypes;
5750 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5751 ParamTypes.push_back(ArgList[i].V->getType());
5753 if (!FunctionType::isValidReturnType(RetType))
5754 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5756 Ty = FunctionType::get(RetType, ParamTypes, false);
5761 // Look up the callee.
5763 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5766 // Set up the Attribute for the function.
5767 SmallVector<AttributeSet, 8> Attrs;
5768 if (RetAttrs.hasAttributes())
5769 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5770 AttributeSet::ReturnIndex,
5773 SmallVector<Value*, 8> Args;
5775 // Loop through FunctionType's arguments and ensure they are specified
5776 // correctly. Also, gather any parameter attributes.
5777 FunctionType::param_iterator I = Ty->param_begin();
5778 FunctionType::param_iterator E = Ty->param_end();
5779 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5780 Type *ExpectedTy = nullptr;
5783 } else if (!Ty->isVarArg()) {
5784 return Error(ArgList[i].Loc, "too many arguments specified");
5787 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5788 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5789 getTypeString(ExpectedTy) + "'");
5790 Args.push_back(ArgList[i].V);
5791 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5792 AttrBuilder B(ArgList[i].Attrs, i + 1);
5793 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5798 return Error(CallLoc, "not enough parameters specified for call");
5800 if (FnAttrs.hasAttributes()) {
5801 if (FnAttrs.hasAlignmentAttr())
5802 return Error(CallLoc, "call instructions may not have an alignment");
5804 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5805 AttributeSet::FunctionIndex,
5809 // Finish off the Attribute and check them
5810 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5812 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5813 CI->setTailCallKind(TCK);
5814 CI->setCallingConv(CC);
5815 CI->setAttributes(PAL);
5816 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5821 //===----------------------------------------------------------------------===//
5822 // Memory Instructions.
5823 //===----------------------------------------------------------------------===//
5826 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5827 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5828 Value *Size = nullptr;
5829 LocTy SizeLoc, TyLoc;
5830 unsigned Alignment = 0;
5833 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5835 if (ParseType(Ty, TyLoc)) return true;
5837 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5838 return Error(TyLoc, "invalid type for alloca");
5840 bool AteExtraComma = false;
5841 if (EatIfPresent(lltok::comma)) {
5842 if (Lex.getKind() == lltok::kw_align) {
5843 if (ParseOptionalAlignment(Alignment)) return true;
5844 } else if (Lex.getKind() == lltok::MetadataVar) {
5845 AteExtraComma = true;
5847 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5848 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5853 if (Size && !Size->getType()->isIntegerTy())
5854 return Error(SizeLoc, "element count must have integer type");
5856 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5857 AI->setUsedWithInAlloca(IsInAlloca);
5859 return AteExtraComma ? InstExtraComma : InstNormal;
5863 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5864 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5865 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5866 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5867 Value *Val; LocTy Loc;
5868 unsigned Alignment = 0;
5869 bool AteExtraComma = false;
5870 bool isAtomic = false;
5871 AtomicOrdering Ordering = NotAtomic;
5872 SynchronizationScope Scope = CrossThread;
5874 if (Lex.getKind() == lltok::kw_atomic) {
5879 bool isVolatile = false;
5880 if (Lex.getKind() == lltok::kw_volatile) {
5886 LocTy ExplicitTypeLoc = Lex.getLoc();
5887 if (ParseType(Ty) ||
5888 ParseToken(lltok::comma, "expected comma after load's type") ||
5889 ParseTypeAndValue(Val, Loc, PFS) ||
5890 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5891 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5894 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5895 return Error(Loc, "load operand must be a pointer to a first class type");
5896 if (isAtomic && !Alignment)
5897 return Error(Loc, "atomic load must have explicit non-zero alignment");
5898 if (Ordering == Release || Ordering == AcquireRelease)
5899 return Error(Loc, "atomic load cannot use Release ordering");
5901 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5902 return Error(ExplicitTypeLoc,
5903 "explicit pointee type doesn't match operand's pointee type");
5905 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5906 return AteExtraComma ? InstExtraComma : InstNormal;
5911 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5912 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5913 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5914 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5915 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5916 unsigned Alignment = 0;
5917 bool AteExtraComma = false;
5918 bool isAtomic = false;
5919 AtomicOrdering Ordering = NotAtomic;
5920 SynchronizationScope Scope = CrossThread;
5922 if (Lex.getKind() == lltok::kw_atomic) {
5927 bool isVolatile = false;
5928 if (Lex.getKind() == lltok::kw_volatile) {
5933 if (ParseTypeAndValue(Val, Loc, PFS) ||
5934 ParseToken(lltok::comma, "expected ',' after store operand") ||
5935 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5936 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5937 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5940 if (!Ptr->getType()->isPointerTy())
5941 return Error(PtrLoc, "store operand must be a pointer");
5942 if (!Val->getType()->isFirstClassType())
5943 return Error(Loc, "store operand must be a first class value");
5944 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5945 return Error(Loc, "stored value and pointer type do not match");
5946 if (isAtomic && !Alignment)
5947 return Error(Loc, "atomic store must have explicit non-zero alignment");
5948 if (Ordering == Acquire || Ordering == AcquireRelease)
5949 return Error(Loc, "atomic store cannot use Acquire ordering");
5951 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5952 return AteExtraComma ? InstExtraComma : InstNormal;
5956 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5957 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5958 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5959 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5960 bool AteExtraComma = false;
5961 AtomicOrdering SuccessOrdering = NotAtomic;
5962 AtomicOrdering FailureOrdering = NotAtomic;
5963 SynchronizationScope Scope = CrossThread;
5964 bool isVolatile = false;
5965 bool isWeak = false;
5967 if (EatIfPresent(lltok::kw_weak))
5970 if (EatIfPresent(lltok::kw_volatile))
5973 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5974 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5975 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5976 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5977 ParseTypeAndValue(New, NewLoc, PFS) ||
5978 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5979 ParseOrdering(FailureOrdering))
5982 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5983 return TokError("cmpxchg cannot be unordered");
5984 if (SuccessOrdering < FailureOrdering)
5985 return TokError("cmpxchg must be at least as ordered on success as failure");
5986 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5987 return TokError("cmpxchg failure ordering cannot include release semantics");
5988 if (!Ptr->getType()->isPointerTy())
5989 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5990 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5991 return Error(CmpLoc, "compare value and pointer type do not match");
5992 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5993 return Error(NewLoc, "new value and pointer type do not match");
5994 if (!New->getType()->isIntegerTy())
5995 return Error(NewLoc, "cmpxchg operand must be an integer");
5996 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5997 if (Size < 8 || (Size & (Size - 1)))
5998 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
6001 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
6002 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
6003 CXI->setVolatile(isVolatile);
6004 CXI->setWeak(isWeak);
6006 return AteExtraComma ? InstExtraComma : InstNormal;
6010 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
6011 /// 'singlethread'? AtomicOrdering
6012 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
6013 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
6014 bool AteExtraComma = false;
6015 AtomicOrdering Ordering = NotAtomic;
6016 SynchronizationScope Scope = CrossThread;
6017 bool isVolatile = false;
6018 AtomicRMWInst::BinOp Operation;
6020 if (EatIfPresent(lltok::kw_volatile))
6023 switch (Lex.getKind()) {
6024 default: return TokError("expected binary operation in atomicrmw");
6025 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
6026 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
6027 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
6028 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
6029 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
6030 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
6031 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
6032 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
6033 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
6034 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
6035 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
6037 Lex.Lex(); // Eat the operation.
6039 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6040 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
6041 ParseTypeAndValue(Val, ValLoc, PFS) ||
6042 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6045 if (Ordering == Unordered)
6046 return TokError("atomicrmw cannot be unordered");
6047 if (!Ptr->getType()->isPointerTy())
6048 return Error(PtrLoc, "atomicrmw operand must be a pointer");
6049 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6050 return Error(ValLoc, "atomicrmw value and pointer type do not match");
6051 if (!Val->getType()->isIntegerTy())
6052 return Error(ValLoc, "atomicrmw operand must be an integer");
6053 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
6054 if (Size < 8 || (Size & (Size - 1)))
6055 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
6058 AtomicRMWInst *RMWI =
6059 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
6060 RMWI->setVolatile(isVolatile);
6062 return AteExtraComma ? InstExtraComma : InstNormal;
6066 /// ::= 'fence' 'singlethread'? AtomicOrdering
6067 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6068 AtomicOrdering Ordering = NotAtomic;
6069 SynchronizationScope Scope = CrossThread;
6070 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6073 if (Ordering == Unordered)
6074 return TokError("fence cannot be unordered");
6075 if (Ordering == Monotonic)
6076 return TokError("fence cannot be monotonic");
6078 Inst = new FenceInst(Context, Ordering, Scope);
6082 /// ParseGetElementPtr
6083 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6084 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6085 Value *Ptr = nullptr;
6086 Value *Val = nullptr;
6089 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6092 LocTy ExplicitTypeLoc = Lex.getLoc();
6093 if (ParseType(Ty) ||
6094 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6095 ParseTypeAndValue(Ptr, Loc, PFS))
6098 Type *BaseType = Ptr->getType();
6099 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6100 if (!BasePointerType)
6101 return Error(Loc, "base of getelementptr must be a pointer");
6103 if (Ty != BasePointerType->getElementType())
6104 return Error(ExplicitTypeLoc,
6105 "explicit pointee type doesn't match operand's pointee type");
6107 SmallVector<Value*, 16> Indices;
6108 bool AteExtraComma = false;
6109 // GEP returns a vector of pointers if at least one of parameters is a vector.
6110 // All vector parameters should have the same vector width.
6111 unsigned GEPWidth = BaseType->isVectorTy() ?
6112 BaseType->getVectorNumElements() : 0;
6114 while (EatIfPresent(lltok::comma)) {
6115 if (Lex.getKind() == lltok::MetadataVar) {
6116 AteExtraComma = true;
6119 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6120 if (!Val->getType()->getScalarType()->isIntegerTy())
6121 return Error(EltLoc, "getelementptr index must be an integer");
6123 if (Val->getType()->isVectorTy()) {
6124 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6125 if (GEPWidth && GEPWidth != ValNumEl)
6126 return Error(EltLoc,
6127 "getelementptr vector index has a wrong number of elements");
6128 GEPWidth = ValNumEl;
6130 Indices.push_back(Val);
6133 SmallPtrSet<Type*, 4> Visited;
6134 if (!Indices.empty() && !Ty->isSized(&Visited))
6135 return Error(Loc, "base element of getelementptr must be sized");
6137 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6138 return Error(Loc, "invalid getelementptr indices");
6139 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6141 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6142 return AteExtraComma ? InstExtraComma : InstNormal;
6145 /// ParseExtractValue
6146 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6147 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6148 Value *Val; LocTy Loc;
6149 SmallVector<unsigned, 4> Indices;
6151 if (ParseTypeAndValue(Val, Loc, PFS) ||
6152 ParseIndexList(Indices, AteExtraComma))
6155 if (!Val->getType()->isAggregateType())
6156 return Error(Loc, "extractvalue operand must be aggregate type");
6158 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6159 return Error(Loc, "invalid indices for extractvalue");
6160 Inst = ExtractValueInst::Create(Val, Indices);
6161 return AteExtraComma ? InstExtraComma : InstNormal;
6164 /// ParseInsertValue
6165 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6166 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6167 Value *Val0, *Val1; LocTy Loc0, Loc1;
6168 SmallVector<unsigned, 4> Indices;
6170 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6171 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6172 ParseTypeAndValue(Val1, Loc1, PFS) ||
6173 ParseIndexList(Indices, AteExtraComma))
6176 if (!Val0->getType()->isAggregateType())
6177 return Error(Loc0, "insertvalue operand must be aggregate type");
6179 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6181 return Error(Loc0, "invalid indices for insertvalue");
6182 if (IndexedType != Val1->getType())
6183 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6184 getTypeString(Val1->getType()) + "' instead of '" +
6185 getTypeString(IndexedType) + "'");
6186 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6187 return AteExtraComma ? InstExtraComma : InstNormal;
6190 //===----------------------------------------------------------------------===//
6191 // Embedded metadata.
6192 //===----------------------------------------------------------------------===//
6194 /// ParseMDNodeVector
6195 /// ::= { Element (',' Element)* }
6197 /// ::= 'null' | TypeAndValue
6198 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6199 if (ParseToken(lltok::lbrace, "expected '{' here"))
6202 // Check for an empty list.
6203 if (EatIfPresent(lltok::rbrace))
6207 // Null is a special case since it is typeless.
6208 if (EatIfPresent(lltok::kw_null)) {
6209 Elts.push_back(nullptr);
6214 if (ParseMetadata(MD, nullptr))
6217 } while (EatIfPresent(lltok::comma));
6219 return ParseToken(lltok::rbrace, "expected end of metadata node");
6222 //===----------------------------------------------------------------------===//
6223 // Use-list order directives.
6224 //===----------------------------------------------------------------------===//
6225 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6228 return Error(Loc, "value has no uses");
6230 unsigned NumUses = 0;
6231 SmallDenseMap<const Use *, unsigned, 16> Order;
6232 for (const Use &U : V->uses()) {
6233 if (++NumUses > Indexes.size())
6235 Order[&U] = Indexes[NumUses - 1];
6238 return Error(Loc, "value only has one use");
6239 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6240 return Error(Loc, "wrong number of indexes, expected " +
6241 Twine(std::distance(V->use_begin(), V->use_end())));
6243 V->sortUseList([&](const Use &L, const Use &R) {
6244 return Order.lookup(&L) < Order.lookup(&R);
6249 /// ParseUseListOrderIndexes
6250 /// ::= '{' uint32 (',' uint32)+ '}'
6251 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6252 SMLoc Loc = Lex.getLoc();
6253 if (ParseToken(lltok::lbrace, "expected '{' here"))
6255 if (Lex.getKind() == lltok::rbrace)
6256 return Lex.Error("expected non-empty list of uselistorder indexes");
6258 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6259 // indexes should be distinct numbers in the range [0, size-1], and should
6261 unsigned Offset = 0;
6263 bool IsOrdered = true;
6264 assert(Indexes.empty() && "Expected empty order vector");
6267 if (ParseUInt32(Index))
6270 // Update consistency checks.
6271 Offset += Index - Indexes.size();
6272 Max = std::max(Max, Index);
6273 IsOrdered &= Index == Indexes.size();
6275 Indexes.push_back(Index);
6276 } while (EatIfPresent(lltok::comma));
6278 if (ParseToken(lltok::rbrace, "expected '}' here"))
6281 if (Indexes.size() < 2)
6282 return Error(Loc, "expected >= 2 uselistorder indexes");
6283 if (Offset != 0 || Max >= Indexes.size())
6284 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6286 return Error(Loc, "expected uselistorder indexes to change the order");
6291 /// ParseUseListOrder
6292 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6293 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6294 SMLoc Loc = Lex.getLoc();
6295 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6299 SmallVector<unsigned, 16> Indexes;
6300 if (ParseTypeAndValue(V, PFS) ||
6301 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6302 ParseUseListOrderIndexes(Indexes))
6305 return sortUseListOrder(V, Indexes, Loc);
6308 /// ParseUseListOrderBB
6309 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6310 bool LLParser::ParseUseListOrderBB() {
6311 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6312 SMLoc Loc = Lex.getLoc();
6316 SmallVector<unsigned, 16> Indexes;
6317 if (ParseValID(Fn) ||
6318 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6319 ParseValID(Label) ||
6320 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6321 ParseUseListOrderIndexes(Indexes))
6324 // Check the function.
6326 if (Fn.Kind == ValID::t_GlobalName)
6327 GV = M->getNamedValue(Fn.StrVal);
6328 else if (Fn.Kind == ValID::t_GlobalID)
6329 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6331 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6333 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6334 auto *F = dyn_cast<Function>(GV);
6336 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6337 if (F->isDeclaration())
6338 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6340 // Check the basic block.
6341 if (Label.Kind == ValID::t_LocalID)
6342 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6343 if (Label.Kind != ValID::t_LocalName)
6344 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6345 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6347 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6348 if (!isa<BasicBlock>(V))
6349 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6351 return sortUseListOrder(V, Indexes, Loc);