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 // Okay, create the alias but do not insert it into the module yet.
717 std::unique_ptr<GlobalAlias> GA(
718 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
719 Name, Aliasee, /*Parent*/ nullptr));
720 GA->setThreadLocalMode(TLM);
721 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
722 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
723 GA->setUnnamedAddr(UnnamedAddr);
726 NumberedVals.push_back(GA.get());
728 // See if this value already exists in the symbol table. If so, it is either
729 // a redefinition or a definition of a forward reference.
730 if (GlobalValue *Val = M->getNamedValue(Name)) {
731 // See if this was a redefinition. If so, there is no entry in
733 auto I = ForwardRefVals.find(Name);
734 if (I == ForwardRefVals.end())
735 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
737 // Otherwise, this was a definition of forward ref. Verify that types
739 if (Val->getType() != GA->getType())
740 return Error(NameLoc,
741 "forward reference and definition of alias have different types");
743 // If they agree, just RAUW the old value with the alias and remove the
745 Val->replaceAllUsesWith(GA.get());
746 Val->eraseFromParent();
747 ForwardRefVals.erase(I);
750 // Insert into the module, we know its name won't collide now.
751 M->getAliasList().push_back(GA.get());
752 assert(GA->getName() == Name && "Should not be a name conflict!");
754 // The module owns this now
761 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
762 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
763 /// OptionalExternallyInitialized GlobalType Type Const
764 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
765 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
766 /// OptionalExternallyInitialized GlobalType Type Const
768 /// Everything up to and including OptionalUnnamedAddr has been parsed
771 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
772 unsigned Linkage, bool HasLinkage,
773 unsigned Visibility, unsigned DLLStorageClass,
774 GlobalVariable::ThreadLocalMode TLM,
776 if (!isValidVisibilityForLinkage(Visibility, Linkage))
777 return Error(NameLoc,
778 "symbol with local linkage must have default visibility");
781 bool IsConstant, IsExternallyInitialized;
782 LocTy IsExternallyInitializedLoc;
786 if (ParseOptionalAddrSpace(AddrSpace) ||
787 ParseOptionalToken(lltok::kw_externally_initialized,
788 IsExternallyInitialized,
789 &IsExternallyInitializedLoc) ||
790 ParseGlobalType(IsConstant) ||
791 ParseType(Ty, TyLoc))
794 // If the linkage is specified and is external, then no initializer is
796 Constant *Init = nullptr;
797 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
798 Linkage != GlobalValue::ExternalLinkage)) {
799 if (ParseGlobalValue(Ty, Init))
803 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
804 return Error(TyLoc, "invalid type for global variable");
806 GlobalValue *GVal = nullptr;
808 // See if the global was forward referenced, if so, use the global.
810 GVal = M->getNamedValue(Name);
812 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
813 return Error(NameLoc, "redefinition of global '@" + Name + "'");
816 auto I = ForwardRefValIDs.find(NumberedVals.size());
817 if (I != ForwardRefValIDs.end()) {
818 GVal = I->second.first;
819 ForwardRefValIDs.erase(I);
825 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
826 Name, nullptr, GlobalVariable::NotThreadLocal,
829 if (GVal->getValueType() != Ty)
831 "forward reference and definition of global have different types");
833 GV = cast<GlobalVariable>(GVal);
835 // Move the forward-reference to the correct spot in the module.
836 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
840 NumberedVals.push_back(GV);
842 // Set the parsed properties on the global.
844 GV->setInitializer(Init);
845 GV->setConstant(IsConstant);
846 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
847 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
848 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
849 GV->setExternallyInitialized(IsExternallyInitialized);
850 GV->setThreadLocalMode(TLM);
851 GV->setUnnamedAddr(UnnamedAddr);
853 // Parse attributes on the global.
854 while (Lex.getKind() == lltok::comma) {
857 if (Lex.getKind() == lltok::kw_section) {
859 GV->setSection(Lex.getStrVal());
860 if (ParseToken(lltok::StringConstant, "expected global section string"))
862 } else if (Lex.getKind() == lltok::kw_align) {
864 if (ParseOptionalAlignment(Alignment)) return true;
865 GV->setAlignment(Alignment);
868 if (parseOptionalComdat(Name, C))
873 return TokError("unknown global variable property!");
880 /// ParseUnnamedAttrGrp
881 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
882 bool LLParser::ParseUnnamedAttrGrp() {
883 assert(Lex.getKind() == lltok::kw_attributes);
884 LocTy AttrGrpLoc = Lex.getLoc();
887 if (Lex.getKind() != lltok::AttrGrpID)
888 return TokError("expected attribute group id");
890 unsigned VarID = Lex.getUIntVal();
891 std::vector<unsigned> unused;
895 if (ParseToken(lltok::equal, "expected '=' here") ||
896 ParseToken(lltok::lbrace, "expected '{' here") ||
897 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
899 ParseToken(lltok::rbrace, "expected end of attribute group"))
902 if (!NumberedAttrBuilders[VarID].hasAttributes())
903 return Error(AttrGrpLoc, "attribute group has no attributes");
908 /// ParseFnAttributeValuePairs
909 /// ::= <attr> | <attr> '=' <value>
910 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
911 std::vector<unsigned> &FwdRefAttrGrps,
912 bool inAttrGrp, LocTy &BuiltinLoc) {
913 bool HaveError = false;
918 lltok::Kind Token = Lex.getKind();
919 if (Token == lltok::kw_builtin)
920 BuiltinLoc = Lex.getLoc();
923 if (!inAttrGrp) return HaveError;
924 return Error(Lex.getLoc(), "unterminated attribute group");
929 case lltok::AttrGrpID: {
930 // Allow a function to reference an attribute group:
932 // define void @foo() #1 { ... }
936 "cannot have an attribute group reference in an attribute group");
938 unsigned AttrGrpNum = Lex.getUIntVal();
939 if (inAttrGrp) break;
941 // Save the reference to the attribute group. We'll fill it in later.
942 FwdRefAttrGrps.push_back(AttrGrpNum);
945 // Target-dependent attributes:
946 case lltok::StringConstant: {
947 if (ParseStringAttribute(B))
952 // Target-independent attributes:
953 case lltok::kw_align: {
954 // As a hack, we allow function alignment to be initially parsed as an
955 // attribute on a function declaration/definition or added to an attribute
956 // group and later moved to the alignment field.
960 if (ParseToken(lltok::equal, "expected '=' here") ||
961 ParseUInt32(Alignment))
964 if (ParseOptionalAlignment(Alignment))
967 B.addAlignmentAttr(Alignment);
970 case lltok::kw_alignstack: {
974 if (ParseToken(lltok::equal, "expected '=' here") ||
975 ParseUInt32(Alignment))
978 if (ParseOptionalStackAlignment(Alignment))
981 B.addStackAlignmentAttr(Alignment);
984 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
985 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
986 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
987 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
988 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
989 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
990 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
991 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
992 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
993 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
994 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
995 case lltok::kw_noimplicitfloat:
996 B.addAttribute(Attribute::NoImplicitFloat); break;
997 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
998 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
999 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1000 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1001 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1002 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1003 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1004 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1005 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1006 case lltok::kw_returns_twice:
1007 B.addAttribute(Attribute::ReturnsTwice); break;
1008 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1009 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1010 case lltok::kw_sspstrong:
1011 B.addAttribute(Attribute::StackProtectStrong); break;
1012 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1013 case lltok::kw_sanitize_address:
1014 B.addAttribute(Attribute::SanitizeAddress); break;
1015 case lltok::kw_sanitize_thread:
1016 B.addAttribute(Attribute::SanitizeThread); break;
1017 case lltok::kw_sanitize_memory:
1018 B.addAttribute(Attribute::SanitizeMemory); break;
1019 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1022 case lltok::kw_inreg:
1023 case lltok::kw_signext:
1024 case lltok::kw_zeroext:
1027 "invalid use of attribute on a function");
1029 case lltok::kw_byval:
1030 case lltok::kw_dereferenceable:
1031 case lltok::kw_dereferenceable_or_null:
1032 case lltok::kw_inalloca:
1033 case lltok::kw_nest:
1034 case lltok::kw_noalias:
1035 case lltok::kw_nocapture:
1036 case lltok::kw_nonnull:
1037 case lltok::kw_returned:
1038 case lltok::kw_sret:
1041 "invalid use of parameter-only attribute on a function");
1049 //===----------------------------------------------------------------------===//
1050 // GlobalValue Reference/Resolution Routines.
1051 //===----------------------------------------------------------------------===//
1053 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1054 const std::string &Name) {
1055 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1056 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1058 return new GlobalVariable(*M, PTy->getElementType(), false,
1059 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1060 nullptr, GlobalVariable::NotThreadLocal,
1061 PTy->getAddressSpace());
1064 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1065 /// forward reference record if needed. This can return null if the value
1066 /// exists but does not have the right type.
1067 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1069 PointerType *PTy = dyn_cast<PointerType>(Ty);
1071 Error(Loc, "global variable reference must have pointer type");
1075 // Look this name up in the normal function symbol table.
1077 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1079 // If this is a forward reference for the value, see if we already created a
1080 // forward ref record.
1082 auto I = ForwardRefVals.find(Name);
1083 if (I != ForwardRefVals.end())
1084 Val = I->second.first;
1087 // If we have the value in the symbol table or fwd-ref table, return it.
1089 if (Val->getType() == Ty) return Val;
1090 Error(Loc, "'@" + Name + "' defined with type '" +
1091 getTypeString(Val->getType()) + "'");
1095 // Otherwise, create a new forward reference for this value and remember it.
1096 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1097 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1101 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1102 PointerType *PTy = dyn_cast<PointerType>(Ty);
1104 Error(Loc, "global variable reference must have pointer type");
1108 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1110 // If this is a forward reference for the value, see if we already created a
1111 // forward ref record.
1113 auto I = ForwardRefValIDs.find(ID);
1114 if (I != ForwardRefValIDs.end())
1115 Val = I->second.first;
1118 // If we have the value in the symbol table or fwd-ref table, return it.
1120 if (Val->getType() == Ty) return Val;
1121 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1122 getTypeString(Val->getType()) + "'");
1126 // Otherwise, create a new forward reference for this value and remember it.
1127 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1128 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1133 //===----------------------------------------------------------------------===//
1134 // Comdat Reference/Resolution Routines.
1135 //===----------------------------------------------------------------------===//
1137 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1138 // Look this name up in the comdat symbol table.
1139 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1140 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1141 if (I != ComdatSymTab.end())
1144 // Otherwise, create a new forward reference for this value and remember it.
1145 Comdat *C = M->getOrInsertComdat(Name);
1146 ForwardRefComdats[Name] = Loc;
1151 //===----------------------------------------------------------------------===//
1153 //===----------------------------------------------------------------------===//
1155 /// ParseToken - If the current token has the specified kind, eat it and return
1156 /// success. Otherwise, emit the specified error and return failure.
1157 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1158 if (Lex.getKind() != T)
1159 return TokError(ErrMsg);
1164 /// ParseStringConstant
1165 /// ::= StringConstant
1166 bool LLParser::ParseStringConstant(std::string &Result) {
1167 if (Lex.getKind() != lltok::StringConstant)
1168 return TokError("expected string constant");
1169 Result = Lex.getStrVal();
1176 bool LLParser::ParseUInt32(unsigned &Val) {
1177 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1178 return TokError("expected integer");
1179 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1180 if (Val64 != unsigned(Val64))
1181 return TokError("expected 32-bit integer (too large)");
1189 bool LLParser::ParseUInt64(uint64_t &Val) {
1190 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1191 return TokError("expected integer");
1192 Val = Lex.getAPSIntVal().getLimitedValue();
1198 /// := 'localdynamic'
1199 /// := 'initialexec'
1201 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1202 switch (Lex.getKind()) {
1204 return TokError("expected localdynamic, initialexec or localexec");
1205 case lltok::kw_localdynamic:
1206 TLM = GlobalVariable::LocalDynamicTLSModel;
1208 case lltok::kw_initialexec:
1209 TLM = GlobalVariable::InitialExecTLSModel;
1211 case lltok::kw_localexec:
1212 TLM = GlobalVariable::LocalExecTLSModel;
1220 /// ParseOptionalThreadLocal
1222 /// := 'thread_local'
1223 /// := 'thread_local' '(' tlsmodel ')'
1224 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1225 TLM = GlobalVariable::NotThreadLocal;
1226 if (!EatIfPresent(lltok::kw_thread_local))
1229 TLM = GlobalVariable::GeneralDynamicTLSModel;
1230 if (Lex.getKind() == lltok::lparen) {
1232 return ParseTLSModel(TLM) ||
1233 ParseToken(lltok::rparen, "expected ')' after thread local model");
1238 /// ParseOptionalAddrSpace
1240 /// := 'addrspace' '(' uint32 ')'
1241 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1243 if (!EatIfPresent(lltok::kw_addrspace))
1245 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1246 ParseUInt32(AddrSpace) ||
1247 ParseToken(lltok::rparen, "expected ')' in address space");
1250 /// ParseStringAttribute
1251 /// := StringConstant
1252 /// := StringConstant '=' StringConstant
1253 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1254 std::string Attr = Lex.getStrVal();
1257 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1259 B.addAttribute(Attr, Val);
1263 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1264 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1265 bool HaveError = false;
1270 lltok::Kind Token = Lex.getKind();
1272 default: // End of attributes.
1274 case lltok::StringConstant: {
1275 if (ParseStringAttribute(B))
1279 case lltok::kw_align: {
1281 if (ParseOptionalAlignment(Alignment))
1283 B.addAlignmentAttr(Alignment);
1286 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1287 case lltok::kw_dereferenceable: {
1289 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1291 B.addDereferenceableAttr(Bytes);
1294 case lltok::kw_dereferenceable_or_null: {
1296 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1298 B.addDereferenceableOrNullAttr(Bytes);
1301 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1302 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1303 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1304 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1305 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1306 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1307 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1308 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1309 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1310 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1311 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1312 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1314 case lltok::kw_alignstack:
1315 case lltok::kw_alwaysinline:
1316 case lltok::kw_argmemonly:
1317 case lltok::kw_builtin:
1318 case lltok::kw_inlinehint:
1319 case lltok::kw_jumptable:
1320 case lltok::kw_minsize:
1321 case lltok::kw_naked:
1322 case lltok::kw_nobuiltin:
1323 case lltok::kw_noduplicate:
1324 case lltok::kw_noimplicitfloat:
1325 case lltok::kw_noinline:
1326 case lltok::kw_nonlazybind:
1327 case lltok::kw_noredzone:
1328 case lltok::kw_noreturn:
1329 case lltok::kw_nounwind:
1330 case lltok::kw_optnone:
1331 case lltok::kw_optsize:
1332 case lltok::kw_returns_twice:
1333 case lltok::kw_sanitize_address:
1334 case lltok::kw_sanitize_memory:
1335 case lltok::kw_sanitize_thread:
1337 case lltok::kw_sspreq:
1338 case lltok::kw_sspstrong:
1339 case lltok::kw_safestack:
1340 case lltok::kw_uwtable:
1341 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1349 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1350 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1351 bool HaveError = false;
1356 lltok::Kind Token = Lex.getKind();
1358 default: // End of attributes.
1360 case lltok::StringConstant: {
1361 if (ParseStringAttribute(B))
1365 case lltok::kw_dereferenceable: {
1367 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1369 B.addDereferenceableAttr(Bytes);
1372 case lltok::kw_dereferenceable_or_null: {
1374 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1376 B.addDereferenceableOrNullAttr(Bytes);
1379 case lltok::kw_align: {
1381 if (ParseOptionalAlignment(Alignment))
1383 B.addAlignmentAttr(Alignment);
1386 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1387 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1388 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1389 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1390 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1393 case lltok::kw_byval:
1394 case lltok::kw_inalloca:
1395 case lltok::kw_nest:
1396 case lltok::kw_nocapture:
1397 case lltok::kw_returned:
1398 case lltok::kw_sret:
1399 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1402 case lltok::kw_alignstack:
1403 case lltok::kw_alwaysinline:
1404 case lltok::kw_argmemonly:
1405 case lltok::kw_builtin:
1406 case lltok::kw_cold:
1407 case lltok::kw_inlinehint:
1408 case lltok::kw_jumptable:
1409 case lltok::kw_minsize:
1410 case lltok::kw_naked:
1411 case lltok::kw_nobuiltin:
1412 case lltok::kw_noduplicate:
1413 case lltok::kw_noimplicitfloat:
1414 case lltok::kw_noinline:
1415 case lltok::kw_nonlazybind:
1416 case lltok::kw_noredzone:
1417 case lltok::kw_noreturn:
1418 case lltok::kw_nounwind:
1419 case lltok::kw_optnone:
1420 case lltok::kw_optsize:
1421 case lltok::kw_returns_twice:
1422 case lltok::kw_sanitize_address:
1423 case lltok::kw_sanitize_memory:
1424 case lltok::kw_sanitize_thread:
1426 case lltok::kw_sspreq:
1427 case lltok::kw_sspstrong:
1428 case lltok::kw_safestack:
1429 case lltok::kw_uwtable:
1430 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1433 case lltok::kw_readnone:
1434 case lltok::kw_readonly:
1435 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1442 /// ParseOptionalLinkage
1449 /// ::= 'linkonce_odr'
1450 /// ::= 'available_externally'
1453 /// ::= 'extern_weak'
1455 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1457 switch (Lex.getKind()) {
1458 default: Res=GlobalValue::ExternalLinkage; return false;
1459 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1460 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1461 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1462 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1463 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1464 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1465 case lltok::kw_available_externally:
1466 Res = GlobalValue::AvailableExternallyLinkage;
1468 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1469 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1470 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1471 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1478 /// ParseOptionalVisibility
1484 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1485 switch (Lex.getKind()) {
1486 default: Res = GlobalValue::DefaultVisibility; return false;
1487 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1488 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1489 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1495 /// ParseOptionalDLLStorageClass
1500 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1501 switch (Lex.getKind()) {
1502 default: Res = GlobalValue::DefaultStorageClass; return false;
1503 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1504 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1510 /// ParseOptionalCallingConv
1514 /// ::= 'intel_ocl_bicc'
1516 /// ::= 'x86_stdcallcc'
1517 /// ::= 'x86_fastcallcc'
1518 /// ::= 'x86_thiscallcc'
1519 /// ::= 'x86_vectorcallcc'
1520 /// ::= 'arm_apcscc'
1521 /// ::= 'arm_aapcscc'
1522 /// ::= 'arm_aapcs_vfpcc'
1523 /// ::= 'msp430_intrcc'
1524 /// ::= 'ptx_kernel'
1525 /// ::= 'ptx_device'
1527 /// ::= 'spir_kernel'
1528 /// ::= 'x86_64_sysvcc'
1529 /// ::= 'x86_64_win64cc'
1530 /// ::= 'webkit_jscc'
1532 /// ::= 'preserve_mostcc'
1533 /// ::= 'preserve_allcc'
1537 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1538 switch (Lex.getKind()) {
1539 default: CC = CallingConv::C; return false;
1540 case lltok::kw_ccc: CC = CallingConv::C; break;
1541 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1542 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1543 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1544 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1545 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1546 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1547 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1548 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1549 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1550 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1551 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1552 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1553 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1554 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1555 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1556 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1557 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1558 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1559 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1560 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1561 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1562 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1563 case lltok::kw_cc: {
1565 return ParseUInt32(CC);
1573 /// ParseMetadataAttachment
1575 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1576 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1578 std::string Name = Lex.getStrVal();
1579 Kind = M->getMDKindID(Name);
1582 return ParseMDNode(MD);
1585 /// ParseInstructionMetadata
1586 /// ::= !dbg !42 (',' !dbg !57)*
1587 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1589 if (Lex.getKind() != lltok::MetadataVar)
1590 return TokError("expected metadata after comma");
1594 if (ParseMetadataAttachment(MDK, N))
1597 Inst.setMetadata(MDK, N);
1598 if (MDK == LLVMContext::MD_tbaa)
1599 InstsWithTBAATag.push_back(&Inst);
1601 // If this is the end of the list, we're done.
1602 } while (EatIfPresent(lltok::comma));
1606 /// ParseOptionalFunctionMetadata
1608 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1609 while (Lex.getKind() == lltok::MetadataVar) {
1612 if (ParseMetadataAttachment(MDK, N))
1615 F.setMetadata(MDK, N);
1620 /// ParseOptionalAlignment
1623 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1625 if (!EatIfPresent(lltok::kw_align))
1627 LocTy AlignLoc = Lex.getLoc();
1628 if (ParseUInt32(Alignment)) return true;
1629 if (!isPowerOf2_32(Alignment))
1630 return Error(AlignLoc, "alignment is not a power of two");
1631 if (Alignment > Value::MaximumAlignment)
1632 return Error(AlignLoc, "huge alignments are not supported yet");
1636 /// ParseOptionalDerefAttrBytes
1638 /// ::= AttrKind '(' 4 ')'
1640 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1641 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1643 assert((AttrKind == lltok::kw_dereferenceable ||
1644 AttrKind == lltok::kw_dereferenceable_or_null) &&
1648 if (!EatIfPresent(AttrKind))
1650 LocTy ParenLoc = Lex.getLoc();
1651 if (!EatIfPresent(lltok::lparen))
1652 return Error(ParenLoc, "expected '('");
1653 LocTy DerefLoc = Lex.getLoc();
1654 if (ParseUInt64(Bytes)) return true;
1655 ParenLoc = Lex.getLoc();
1656 if (!EatIfPresent(lltok::rparen))
1657 return Error(ParenLoc, "expected ')'");
1659 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1663 /// ParseOptionalCommaAlign
1667 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1669 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1670 bool &AteExtraComma) {
1671 AteExtraComma = false;
1672 while (EatIfPresent(lltok::comma)) {
1673 // Metadata at the end is an early exit.
1674 if (Lex.getKind() == lltok::MetadataVar) {
1675 AteExtraComma = true;
1679 if (Lex.getKind() != lltok::kw_align)
1680 return Error(Lex.getLoc(), "expected metadata or 'align'");
1682 if (ParseOptionalAlignment(Alignment)) return true;
1688 /// ParseScopeAndOrdering
1689 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1692 /// This sets Scope and Ordering to the parsed values.
1693 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1694 AtomicOrdering &Ordering) {
1698 Scope = CrossThread;
1699 if (EatIfPresent(lltok::kw_singlethread))
1700 Scope = SingleThread;
1702 return ParseOrdering(Ordering);
1706 /// ::= AtomicOrdering
1708 /// This sets Ordering to the parsed value.
1709 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1710 switch (Lex.getKind()) {
1711 default: return TokError("Expected ordering on atomic instruction");
1712 case lltok::kw_unordered: Ordering = Unordered; break;
1713 case lltok::kw_monotonic: Ordering = Monotonic; break;
1714 case lltok::kw_acquire: Ordering = Acquire; break;
1715 case lltok::kw_release: Ordering = Release; break;
1716 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1717 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1723 /// ParseOptionalStackAlignment
1725 /// ::= 'alignstack' '(' 4 ')'
1726 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1728 if (!EatIfPresent(lltok::kw_alignstack))
1730 LocTy ParenLoc = Lex.getLoc();
1731 if (!EatIfPresent(lltok::lparen))
1732 return Error(ParenLoc, "expected '('");
1733 LocTy AlignLoc = Lex.getLoc();
1734 if (ParseUInt32(Alignment)) return true;
1735 ParenLoc = Lex.getLoc();
1736 if (!EatIfPresent(lltok::rparen))
1737 return Error(ParenLoc, "expected ')'");
1738 if (!isPowerOf2_32(Alignment))
1739 return Error(AlignLoc, "stack alignment is not a power of two");
1743 /// ParseIndexList - This parses the index list for an insert/extractvalue
1744 /// instruction. This sets AteExtraComma in the case where we eat an extra
1745 /// comma at the end of the line and find that it is followed by metadata.
1746 /// Clients that don't allow metadata can call the version of this function that
1747 /// only takes one argument.
1750 /// ::= (',' uint32)+
1752 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1753 bool &AteExtraComma) {
1754 AteExtraComma = false;
1756 if (Lex.getKind() != lltok::comma)
1757 return TokError("expected ',' as start of index list");
1759 while (EatIfPresent(lltok::comma)) {
1760 if (Lex.getKind() == lltok::MetadataVar) {
1761 if (Indices.empty()) return TokError("expected index");
1762 AteExtraComma = true;
1766 if (ParseUInt32(Idx)) return true;
1767 Indices.push_back(Idx);
1773 //===----------------------------------------------------------------------===//
1775 //===----------------------------------------------------------------------===//
1777 /// ParseType - Parse a type.
1778 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1779 SMLoc TypeLoc = Lex.getLoc();
1780 switch (Lex.getKind()) {
1782 return TokError(Msg);
1784 // Type ::= 'float' | 'void' (etc)
1785 Result = Lex.getTyVal();
1789 // Type ::= StructType
1790 if (ParseAnonStructType(Result, false))
1793 case lltok::lsquare:
1794 // Type ::= '[' ... ']'
1795 Lex.Lex(); // eat the lsquare.
1796 if (ParseArrayVectorType(Result, false))
1799 case lltok::less: // Either vector or packed struct.
1800 // Type ::= '<' ... '>'
1802 if (Lex.getKind() == lltok::lbrace) {
1803 if (ParseAnonStructType(Result, true) ||
1804 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1806 } else if (ParseArrayVectorType(Result, true))
1809 case lltok::LocalVar: {
1811 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1813 // If the type hasn't been defined yet, create a forward definition and
1814 // remember where that forward def'n was seen (in case it never is defined).
1816 Entry.first = StructType::create(Context, Lex.getStrVal());
1817 Entry.second = Lex.getLoc();
1819 Result = Entry.first;
1824 case lltok::LocalVarID: {
1826 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1828 // If the type hasn't been defined yet, create a forward definition and
1829 // remember where that forward def'n was seen (in case it never is defined).
1831 Entry.first = StructType::create(Context);
1832 Entry.second = Lex.getLoc();
1834 Result = Entry.first;
1840 // Parse the type suffixes.
1842 switch (Lex.getKind()) {
1845 if (!AllowVoid && Result->isVoidTy())
1846 return Error(TypeLoc, "void type only allowed for function results");
1849 // Type ::= Type '*'
1851 if (Result->isLabelTy())
1852 return TokError("basic block pointers are invalid");
1853 if (Result->isVoidTy())
1854 return TokError("pointers to void are invalid - use i8* instead");
1855 if (!PointerType::isValidElementType(Result))
1856 return TokError("pointer to this type is invalid");
1857 Result = PointerType::getUnqual(Result);
1861 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1862 case lltok::kw_addrspace: {
1863 if (Result->isLabelTy())
1864 return TokError("basic block pointers are invalid");
1865 if (Result->isVoidTy())
1866 return TokError("pointers to void are invalid; use i8* instead");
1867 if (!PointerType::isValidElementType(Result))
1868 return TokError("pointer to this type is invalid");
1870 if (ParseOptionalAddrSpace(AddrSpace) ||
1871 ParseToken(lltok::star, "expected '*' in address space"))
1874 Result = PointerType::get(Result, AddrSpace);
1878 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1880 if (ParseFunctionType(Result))
1887 /// ParseParameterList
1889 /// ::= '(' Arg (',' Arg)* ')'
1891 /// ::= Type OptionalAttributes Value OptionalAttributes
1892 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1893 PerFunctionState &PFS, bool IsMustTailCall,
1894 bool InVarArgsFunc) {
1895 if (ParseToken(lltok::lparen, "expected '(' in call"))
1898 unsigned AttrIndex = 1;
1899 while (Lex.getKind() != lltok::rparen) {
1900 // If this isn't the first argument, we need a comma.
1901 if (!ArgList.empty() &&
1902 ParseToken(lltok::comma, "expected ',' in argument list"))
1905 // Parse an ellipsis if this is a musttail call in a variadic function.
1906 if (Lex.getKind() == lltok::dotdotdot) {
1907 const char *Msg = "unexpected ellipsis in argument list for ";
1908 if (!IsMustTailCall)
1909 return TokError(Twine(Msg) + "non-musttail call");
1911 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1912 Lex.Lex(); // Lex the '...', it is purely for readability.
1913 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1916 // Parse the argument.
1918 Type *ArgTy = nullptr;
1919 AttrBuilder ArgAttrs;
1921 if (ParseType(ArgTy, ArgLoc))
1924 if (ArgTy->isMetadataTy()) {
1925 if (ParseMetadataAsValue(V, PFS))
1928 // Otherwise, handle normal operands.
1929 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1932 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1937 if (IsMustTailCall && InVarArgsFunc)
1938 return TokError("expected '...' at end of argument list for musttail call "
1939 "in varargs function");
1941 Lex.Lex(); // Lex the ')'.
1947 /// ParseArgumentList - Parse the argument list for a function type or function
1949 /// ::= '(' ArgTypeListI ')'
1953 /// ::= ArgTypeList ',' '...'
1954 /// ::= ArgType (',' ArgType)*
1956 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1959 assert(Lex.getKind() == lltok::lparen);
1960 Lex.Lex(); // eat the (.
1962 if (Lex.getKind() == lltok::rparen) {
1964 } else if (Lex.getKind() == lltok::dotdotdot) {
1968 LocTy TypeLoc = Lex.getLoc();
1969 Type *ArgTy = nullptr;
1973 if (ParseType(ArgTy) ||
1974 ParseOptionalParamAttrs(Attrs)) return true;
1976 if (ArgTy->isVoidTy())
1977 return Error(TypeLoc, "argument can not have void type");
1979 if (Lex.getKind() == lltok::LocalVar) {
1980 Name = Lex.getStrVal();
1984 if (!FunctionType::isValidArgumentType(ArgTy))
1985 return Error(TypeLoc, "invalid type for function argument");
1987 unsigned AttrIndex = 1;
1988 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1989 AttrIndex++, Attrs),
1992 while (EatIfPresent(lltok::comma)) {
1993 // Handle ... at end of arg list.
1994 if (EatIfPresent(lltok::dotdotdot)) {
1999 // Otherwise must be an argument type.
2000 TypeLoc = Lex.getLoc();
2001 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2003 if (ArgTy->isVoidTy())
2004 return Error(TypeLoc, "argument can not have void type");
2006 if (Lex.getKind() == lltok::LocalVar) {
2007 Name = Lex.getStrVal();
2013 if (!ArgTy->isFirstClassType())
2014 return Error(TypeLoc, "invalid type for function argument");
2016 ArgList.emplace_back(
2018 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2023 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2026 /// ParseFunctionType
2027 /// ::= Type ArgumentList OptionalAttrs
2028 bool LLParser::ParseFunctionType(Type *&Result) {
2029 assert(Lex.getKind() == lltok::lparen);
2031 if (!FunctionType::isValidReturnType(Result))
2032 return TokError("invalid function return type");
2034 SmallVector<ArgInfo, 8> ArgList;
2036 if (ParseArgumentList(ArgList, isVarArg))
2039 // Reject names on the arguments lists.
2040 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2041 if (!ArgList[i].Name.empty())
2042 return Error(ArgList[i].Loc, "argument name invalid in function type");
2043 if (ArgList[i].Attrs.hasAttributes(i + 1))
2044 return Error(ArgList[i].Loc,
2045 "argument attributes invalid in function type");
2048 SmallVector<Type*, 16> ArgListTy;
2049 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2050 ArgListTy.push_back(ArgList[i].Ty);
2052 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2056 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2058 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2059 SmallVector<Type*, 8> Elts;
2060 if (ParseStructBody(Elts)) return true;
2062 Result = StructType::get(Context, Elts, Packed);
2066 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2067 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2068 std::pair<Type*, LocTy> &Entry,
2070 // If the type was already defined, diagnose the redefinition.
2071 if (Entry.first && !Entry.second.isValid())
2072 return Error(TypeLoc, "redefinition of type");
2074 // If we have opaque, just return without filling in the definition for the
2075 // struct. This counts as a definition as far as the .ll file goes.
2076 if (EatIfPresent(lltok::kw_opaque)) {
2077 // This type is being defined, so clear the location to indicate this.
2078 Entry.second = SMLoc();
2080 // If this type number has never been uttered, create it.
2082 Entry.first = StructType::create(Context, Name);
2083 ResultTy = Entry.first;
2087 // If the type starts with '<', then it is either a packed struct or a vector.
2088 bool isPacked = EatIfPresent(lltok::less);
2090 // If we don't have a struct, then we have a random type alias, which we
2091 // accept for compatibility with old files. These types are not allowed to be
2092 // forward referenced and not allowed to be recursive.
2093 if (Lex.getKind() != lltok::lbrace) {
2095 return Error(TypeLoc, "forward references to non-struct type");
2099 return ParseArrayVectorType(ResultTy, true);
2100 return ParseType(ResultTy);
2103 // This type is being defined, so clear the location to indicate this.
2104 Entry.second = SMLoc();
2106 // If this type number has never been uttered, create it.
2108 Entry.first = StructType::create(Context, Name);
2110 StructType *STy = cast<StructType>(Entry.first);
2112 SmallVector<Type*, 8> Body;
2113 if (ParseStructBody(Body) ||
2114 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2117 STy->setBody(Body, isPacked);
2123 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2126 /// ::= '{' Type (',' Type)* '}'
2127 /// ::= '<' '{' '}' '>'
2128 /// ::= '<' '{' Type (',' Type)* '}' '>'
2129 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2130 assert(Lex.getKind() == lltok::lbrace);
2131 Lex.Lex(); // Consume the '{'
2133 // Handle the empty struct.
2134 if (EatIfPresent(lltok::rbrace))
2137 LocTy EltTyLoc = Lex.getLoc();
2139 if (ParseType(Ty)) return true;
2142 if (!StructType::isValidElementType(Ty))
2143 return Error(EltTyLoc, "invalid element type for struct");
2145 while (EatIfPresent(lltok::comma)) {
2146 EltTyLoc = Lex.getLoc();
2147 if (ParseType(Ty)) return true;
2149 if (!StructType::isValidElementType(Ty))
2150 return Error(EltTyLoc, "invalid element type for struct");
2155 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2158 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2159 /// token has already been consumed.
2161 /// ::= '[' APSINTVAL 'x' Types ']'
2162 /// ::= '<' APSINTVAL 'x' Types '>'
2163 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2164 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2165 Lex.getAPSIntVal().getBitWidth() > 64)
2166 return TokError("expected number in address space");
2168 LocTy SizeLoc = Lex.getLoc();
2169 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2172 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2175 LocTy TypeLoc = Lex.getLoc();
2176 Type *EltTy = nullptr;
2177 if (ParseType(EltTy)) return true;
2179 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2180 "expected end of sequential type"))
2185 return Error(SizeLoc, "zero element vector is illegal");
2186 if ((unsigned)Size != Size)
2187 return Error(SizeLoc, "size too large for vector");
2188 if (!VectorType::isValidElementType(EltTy))
2189 return Error(TypeLoc, "invalid vector element type");
2190 Result = VectorType::get(EltTy, unsigned(Size));
2192 if (!ArrayType::isValidElementType(EltTy))
2193 return Error(TypeLoc, "invalid array element type");
2194 Result = ArrayType::get(EltTy, Size);
2199 //===----------------------------------------------------------------------===//
2200 // Function Semantic Analysis.
2201 //===----------------------------------------------------------------------===//
2203 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2205 : P(p), F(f), FunctionNumber(functionNumber) {
2207 // Insert unnamed arguments into the NumberedVals list.
2208 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2211 NumberedVals.push_back(AI);
2214 LLParser::PerFunctionState::~PerFunctionState() {
2215 // If there were any forward referenced non-basicblock values, delete them.
2217 for (const auto &P : ForwardRefVals) {
2218 if (isa<BasicBlock>(P.second.first))
2220 P.second.first->replaceAllUsesWith(
2221 UndefValue::get(P.second.first->getType()));
2222 delete P.second.first;
2225 for (const auto &P : ForwardRefValIDs) {
2226 if (isa<BasicBlock>(P.second.first))
2228 P.second.first->replaceAllUsesWith(
2229 UndefValue::get(P.second.first->getType()));
2230 delete P.second.first;
2234 bool LLParser::PerFunctionState::FinishFunction() {
2235 if (!ForwardRefVals.empty())
2236 return P.Error(ForwardRefVals.begin()->second.second,
2237 "use of undefined value '%" + ForwardRefVals.begin()->first +
2239 if (!ForwardRefValIDs.empty())
2240 return P.Error(ForwardRefValIDs.begin()->second.second,
2241 "use of undefined value '%" +
2242 Twine(ForwardRefValIDs.begin()->first) + "'");
2247 /// GetVal - Get a value with the specified name or ID, creating a
2248 /// forward reference record if needed. This can return null if the value
2249 /// exists but does not have the right type.
2250 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2251 LocTy Loc, OperatorConstraint OC) {
2252 // Look this name up in the normal function symbol table.
2253 Value *Val = F.getValueSymbolTable().lookup(Name);
2255 // If this is a forward reference for the value, see if we already created a
2256 // forward ref record.
2258 auto I = ForwardRefVals.find(Name);
2259 if (I != ForwardRefVals.end())
2260 Val = I->second.first;
2263 // If we have the value in the symbol table or fwd-ref table, return it.
2265 // Check operator constraints.
2271 if (!isa<CatchPadInst>(Val)) {
2272 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2277 if (!isa<CleanupPadInst>(Val)) {
2278 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2283 if (Val->getType() == Ty) return Val;
2284 if (Ty->isLabelTy())
2285 P.Error(Loc, "'%" + Name + "' is not a basic block");
2287 P.Error(Loc, "'%" + Name + "' defined with type '" +
2288 getTypeString(Val->getType()) + "'");
2292 // Don't make placeholders with invalid type.
2293 if (!Ty->isFirstClassType()) {
2294 P.Error(Loc, "invalid use of a non-first-class type");
2298 // Otherwise, create a new forward reference for this value and remember it.
2300 if (Ty->isLabelTy()) {
2302 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2304 FwdVal = new Argument(Ty, Name);
2308 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2312 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2315 llvm_unreachable("unexpected constraint");
2319 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2323 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2324 OperatorConstraint OC) {
2325 // Look this name up in the normal function symbol table.
2326 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2328 // If this is a forward reference for the value, see if we already created a
2329 // forward ref record.
2331 auto I = ForwardRefValIDs.find(ID);
2332 if (I != ForwardRefValIDs.end())
2333 Val = I->second.first;
2336 // If we have the value in the symbol table or fwd-ref table, return it.
2338 // Check operator constraint.
2344 if (!isa<CatchPadInst>(Val)) {
2345 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2350 if (!isa<CleanupPadInst>(Val)) {
2351 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2356 if (Val->getType() == Ty) return Val;
2357 if (Ty->isLabelTy())
2358 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2360 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2361 getTypeString(Val->getType()) + "'");
2365 if (!Ty->isFirstClassType()) {
2366 P.Error(Loc, "invalid use of a non-first-class type");
2370 // Otherwise, create a new forward reference for this value and remember it.
2372 if (Ty->isLabelTy()) {
2374 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2376 FwdVal = new Argument(Ty);
2380 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2383 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2386 llvm_unreachable("unexpected constraint");
2390 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2394 /// SetInstName - After an instruction is parsed and inserted into its
2395 /// basic block, this installs its name.
2396 bool LLParser::PerFunctionState::SetInstName(int NameID,
2397 const std::string &NameStr,
2398 LocTy NameLoc, Instruction *Inst) {
2399 // If this instruction has void type, it cannot have a name or ID specified.
2400 if (Inst->getType()->isVoidTy()) {
2401 if (NameID != -1 || !NameStr.empty())
2402 return P.Error(NameLoc, "instructions returning void cannot have a name");
2406 // If this was a numbered instruction, verify that the instruction is the
2407 // expected value and resolve any forward references.
2408 if (NameStr.empty()) {
2409 // If neither a name nor an ID was specified, just use the next ID.
2411 NameID = NumberedVals.size();
2413 if (unsigned(NameID) != NumberedVals.size())
2414 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2415 Twine(NumberedVals.size()) + "'");
2417 auto FI = ForwardRefValIDs.find(NameID);
2418 if (FI != ForwardRefValIDs.end()) {
2419 Value *Sentinel = FI->second.first;
2420 if (Sentinel->getType() != Inst->getType())
2421 return P.Error(NameLoc, "instruction forward referenced with type '" +
2422 getTypeString(FI->second.first->getType()) + "'");
2423 // Check operator constraints. We only put cleanuppads or catchpads in
2424 // the forward value map if the value is constrained to match.
2425 if (isa<CatchPadInst>(Sentinel)) {
2426 if (!isa<CatchPadInst>(Inst))
2427 return P.Error(FI->second.second,
2428 "'%" + Twine(NameID) + "' is not a catchpad");
2429 } else if (isa<CleanupPadInst>(Sentinel)) {
2430 if (!isa<CleanupPadInst>(Inst))
2431 return P.Error(FI->second.second,
2432 "'%" + Twine(NameID) + "' is not a cleanuppad");
2435 Sentinel->replaceAllUsesWith(Inst);
2437 ForwardRefValIDs.erase(FI);
2440 NumberedVals.push_back(Inst);
2444 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2445 auto FI = ForwardRefVals.find(NameStr);
2446 if (FI != ForwardRefVals.end()) {
2447 Value *Sentinel = FI->second.first;
2448 if (Sentinel->getType() != Inst->getType())
2449 return P.Error(NameLoc, "instruction forward referenced with type '" +
2450 getTypeString(FI->second.first->getType()) + "'");
2451 // Check operator constraints. We only put cleanuppads or catchpads in
2452 // the forward value map if the value is constrained to match.
2453 if (isa<CatchPadInst>(Sentinel)) {
2454 if (!isa<CatchPadInst>(Inst))
2455 return P.Error(FI->second.second,
2456 "'%" + NameStr + "' is not a catchpad");
2457 } else if (isa<CleanupPadInst>(Sentinel)) {
2458 if (!isa<CleanupPadInst>(Inst))
2459 return P.Error(FI->second.second,
2460 "'%" + NameStr + "' is not a cleanuppad");
2463 Sentinel->replaceAllUsesWith(Inst);
2465 ForwardRefVals.erase(FI);
2468 // Set the name on the instruction.
2469 Inst->setName(NameStr);
2471 if (Inst->getName() != NameStr)
2472 return P.Error(NameLoc, "multiple definition of local value named '" +
2477 /// GetBB - Get a basic block with the specified name or ID, creating a
2478 /// forward reference record if needed.
2479 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2481 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2482 Type::getLabelTy(F.getContext()), Loc));
2485 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2486 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2487 Type::getLabelTy(F.getContext()), Loc));
2490 /// DefineBB - Define the specified basic block, which is either named or
2491 /// unnamed. If there is an error, this returns null otherwise it returns
2492 /// the block being defined.
2493 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2497 BB = GetBB(NumberedVals.size(), Loc);
2499 BB = GetBB(Name, Loc);
2500 if (!BB) return nullptr; // Already diagnosed error.
2502 // Move the block to the end of the function. Forward ref'd blocks are
2503 // inserted wherever they happen to be referenced.
2504 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2506 // Remove the block from forward ref sets.
2508 ForwardRefValIDs.erase(NumberedVals.size());
2509 NumberedVals.push_back(BB);
2511 // BB forward references are already in the function symbol table.
2512 ForwardRefVals.erase(Name);
2518 //===----------------------------------------------------------------------===//
2520 //===----------------------------------------------------------------------===//
2522 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2523 /// type implied. For example, if we parse "4" we don't know what integer type
2524 /// it has. The value will later be combined with its type and checked for
2525 /// sanity. PFS is used to convert function-local operands of metadata (since
2526 /// metadata operands are not just parsed here but also converted to values).
2527 /// PFS can be null when we are not parsing metadata values inside a function.
2528 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2529 ID.Loc = Lex.getLoc();
2530 switch (Lex.getKind()) {
2531 default: return TokError("expected value token");
2532 case lltok::GlobalID: // @42
2533 ID.UIntVal = Lex.getUIntVal();
2534 ID.Kind = ValID::t_GlobalID;
2536 case lltok::GlobalVar: // @foo
2537 ID.StrVal = Lex.getStrVal();
2538 ID.Kind = ValID::t_GlobalName;
2540 case lltok::LocalVarID: // %42
2541 ID.UIntVal = Lex.getUIntVal();
2542 ID.Kind = ValID::t_LocalID;
2544 case lltok::LocalVar: // %foo
2545 ID.StrVal = Lex.getStrVal();
2546 ID.Kind = ValID::t_LocalName;
2549 ID.APSIntVal = Lex.getAPSIntVal();
2550 ID.Kind = ValID::t_APSInt;
2552 case lltok::APFloat:
2553 ID.APFloatVal = Lex.getAPFloatVal();
2554 ID.Kind = ValID::t_APFloat;
2556 case lltok::kw_true:
2557 ID.ConstantVal = ConstantInt::getTrue(Context);
2558 ID.Kind = ValID::t_Constant;
2560 case lltok::kw_false:
2561 ID.ConstantVal = ConstantInt::getFalse(Context);
2562 ID.Kind = ValID::t_Constant;
2564 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2565 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2566 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2568 case lltok::lbrace: {
2569 // ValID ::= '{' ConstVector '}'
2571 SmallVector<Constant*, 16> Elts;
2572 if (ParseGlobalValueVector(Elts) ||
2573 ParseToken(lltok::rbrace, "expected end of struct constant"))
2576 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2577 ID.UIntVal = Elts.size();
2578 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2579 Elts.size() * sizeof(Elts[0]));
2580 ID.Kind = ValID::t_ConstantStruct;
2584 // ValID ::= '<' ConstVector '>' --> Vector.
2585 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2587 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2589 SmallVector<Constant*, 16> Elts;
2590 LocTy FirstEltLoc = Lex.getLoc();
2591 if (ParseGlobalValueVector(Elts) ||
2593 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2594 ParseToken(lltok::greater, "expected end of constant"))
2597 if (isPackedStruct) {
2598 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2599 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2600 Elts.size() * sizeof(Elts[0]));
2601 ID.UIntVal = Elts.size();
2602 ID.Kind = ValID::t_PackedConstantStruct;
2607 return Error(ID.Loc, "constant vector must not be empty");
2609 if (!Elts[0]->getType()->isIntegerTy() &&
2610 !Elts[0]->getType()->isFloatingPointTy() &&
2611 !Elts[0]->getType()->isPointerTy())
2612 return Error(FirstEltLoc,
2613 "vector elements must have integer, pointer or floating point type");
2615 // Verify that all the vector elements have the same type.
2616 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2617 if (Elts[i]->getType() != Elts[0]->getType())
2618 return Error(FirstEltLoc,
2619 "vector element #" + Twine(i) +
2620 " is not of type '" + getTypeString(Elts[0]->getType()));
2622 ID.ConstantVal = ConstantVector::get(Elts);
2623 ID.Kind = ValID::t_Constant;
2626 case lltok::lsquare: { // Array Constant
2628 SmallVector<Constant*, 16> Elts;
2629 LocTy FirstEltLoc = Lex.getLoc();
2630 if (ParseGlobalValueVector(Elts) ||
2631 ParseToken(lltok::rsquare, "expected end of array constant"))
2634 // Handle empty element.
2636 // Use undef instead of an array because it's inconvenient to determine
2637 // the element type at this point, there being no elements to examine.
2638 ID.Kind = ValID::t_EmptyArray;
2642 if (!Elts[0]->getType()->isFirstClassType())
2643 return Error(FirstEltLoc, "invalid array element type: " +
2644 getTypeString(Elts[0]->getType()));
2646 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2648 // Verify all elements are correct type!
2649 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2650 if (Elts[i]->getType() != Elts[0]->getType())
2651 return Error(FirstEltLoc,
2652 "array element #" + Twine(i) +
2653 " is not of type '" + getTypeString(Elts[0]->getType()));
2656 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2657 ID.Kind = ValID::t_Constant;
2660 case lltok::kw_c: // c "foo"
2662 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2664 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2665 ID.Kind = ValID::t_Constant;
2668 case lltok::kw_asm: {
2669 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2671 bool HasSideEffect, AlignStack, AsmDialect;
2673 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2674 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2675 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2676 ParseStringConstant(ID.StrVal) ||
2677 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2678 ParseToken(lltok::StringConstant, "expected constraint string"))
2680 ID.StrVal2 = Lex.getStrVal();
2681 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2682 (unsigned(AsmDialect)<<2);
2683 ID.Kind = ValID::t_InlineAsm;
2687 case lltok::kw_blockaddress: {
2688 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2693 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2695 ParseToken(lltok::comma, "expected comma in block address expression")||
2696 ParseValID(Label) ||
2697 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2700 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2701 return Error(Fn.Loc, "expected function name in blockaddress");
2702 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2703 return Error(Label.Loc, "expected basic block name in blockaddress");
2705 // Try to find the function (but skip it if it's forward-referenced).
2706 GlobalValue *GV = nullptr;
2707 if (Fn.Kind == ValID::t_GlobalID) {
2708 if (Fn.UIntVal < NumberedVals.size())
2709 GV = NumberedVals[Fn.UIntVal];
2710 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2711 GV = M->getNamedValue(Fn.StrVal);
2713 Function *F = nullptr;
2715 // Confirm that it's actually a function with a definition.
2716 if (!isa<Function>(GV))
2717 return Error(Fn.Loc, "expected function name in blockaddress");
2718 F = cast<Function>(GV);
2719 if (F->isDeclaration())
2720 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2724 // Make a global variable as a placeholder for this reference.
2725 GlobalValue *&FwdRef =
2726 ForwardRefBlockAddresses.insert(std::make_pair(
2728 std::map<ValID, GlobalValue *>()))
2729 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2732 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2733 GlobalValue::InternalLinkage, nullptr, "");
2734 ID.ConstantVal = FwdRef;
2735 ID.Kind = ValID::t_Constant;
2739 // We found the function; now find the basic block. Don't use PFS, since we
2740 // might be inside a constant expression.
2742 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2743 if (Label.Kind == ValID::t_LocalID)
2744 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2746 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2748 return Error(Label.Loc, "referenced value is not a basic block");
2750 if (Label.Kind == ValID::t_LocalID)
2751 return Error(Label.Loc, "cannot take address of numeric label after "
2752 "the function is defined");
2753 BB = dyn_cast_or_null<BasicBlock>(
2754 F->getValueSymbolTable().lookup(Label.StrVal));
2756 return Error(Label.Loc, "referenced value is not a basic block");
2759 ID.ConstantVal = BlockAddress::get(F, BB);
2760 ID.Kind = ValID::t_Constant;
2764 case lltok::kw_trunc:
2765 case lltok::kw_zext:
2766 case lltok::kw_sext:
2767 case lltok::kw_fptrunc:
2768 case lltok::kw_fpext:
2769 case lltok::kw_bitcast:
2770 case lltok::kw_addrspacecast:
2771 case lltok::kw_uitofp:
2772 case lltok::kw_sitofp:
2773 case lltok::kw_fptoui:
2774 case lltok::kw_fptosi:
2775 case lltok::kw_inttoptr:
2776 case lltok::kw_ptrtoint: {
2777 unsigned Opc = Lex.getUIntVal();
2778 Type *DestTy = nullptr;
2781 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2782 ParseGlobalTypeAndValue(SrcVal) ||
2783 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2784 ParseType(DestTy) ||
2785 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2787 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2788 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2789 getTypeString(SrcVal->getType()) + "' to '" +
2790 getTypeString(DestTy) + "'");
2791 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2793 ID.Kind = ValID::t_Constant;
2796 case lltok::kw_extractvalue: {
2799 SmallVector<unsigned, 4> Indices;
2800 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2801 ParseGlobalTypeAndValue(Val) ||
2802 ParseIndexList(Indices) ||
2803 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2806 if (!Val->getType()->isAggregateType())
2807 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2808 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2809 return Error(ID.Loc, "invalid indices for extractvalue");
2810 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2811 ID.Kind = ValID::t_Constant;
2814 case lltok::kw_insertvalue: {
2816 Constant *Val0, *Val1;
2817 SmallVector<unsigned, 4> Indices;
2818 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2819 ParseGlobalTypeAndValue(Val0) ||
2820 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2821 ParseGlobalTypeAndValue(Val1) ||
2822 ParseIndexList(Indices) ||
2823 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2825 if (!Val0->getType()->isAggregateType())
2826 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2828 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2830 return Error(ID.Loc, "invalid indices for insertvalue");
2831 if (IndexedType != Val1->getType())
2832 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2833 getTypeString(Val1->getType()) +
2834 "' instead of '" + getTypeString(IndexedType) +
2836 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2837 ID.Kind = ValID::t_Constant;
2840 case lltok::kw_icmp:
2841 case lltok::kw_fcmp: {
2842 unsigned PredVal, Opc = Lex.getUIntVal();
2843 Constant *Val0, *Val1;
2845 if (ParseCmpPredicate(PredVal, Opc) ||
2846 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2847 ParseGlobalTypeAndValue(Val0) ||
2848 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2849 ParseGlobalTypeAndValue(Val1) ||
2850 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2853 if (Val0->getType() != Val1->getType())
2854 return Error(ID.Loc, "compare operands must have the same type");
2856 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2858 if (Opc == Instruction::FCmp) {
2859 if (!Val0->getType()->isFPOrFPVectorTy())
2860 return Error(ID.Loc, "fcmp requires floating point operands");
2861 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2863 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2864 if (!Val0->getType()->isIntOrIntVectorTy() &&
2865 !Val0->getType()->getScalarType()->isPointerTy())
2866 return Error(ID.Loc, "icmp requires pointer or integer operands");
2867 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2869 ID.Kind = ValID::t_Constant;
2873 // Binary Operators.
2875 case lltok::kw_fadd:
2877 case lltok::kw_fsub:
2879 case lltok::kw_fmul:
2880 case lltok::kw_udiv:
2881 case lltok::kw_sdiv:
2882 case lltok::kw_fdiv:
2883 case lltok::kw_urem:
2884 case lltok::kw_srem:
2885 case lltok::kw_frem:
2887 case lltok::kw_lshr:
2888 case lltok::kw_ashr: {
2892 unsigned Opc = Lex.getUIntVal();
2893 Constant *Val0, *Val1;
2895 LocTy ModifierLoc = Lex.getLoc();
2896 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2897 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2898 if (EatIfPresent(lltok::kw_nuw))
2900 if (EatIfPresent(lltok::kw_nsw)) {
2902 if (EatIfPresent(lltok::kw_nuw))
2905 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2906 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2907 if (EatIfPresent(lltok::kw_exact))
2910 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2911 ParseGlobalTypeAndValue(Val0) ||
2912 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2913 ParseGlobalTypeAndValue(Val1) ||
2914 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2916 if (Val0->getType() != Val1->getType())
2917 return Error(ID.Loc, "operands of constexpr must have same type");
2918 if (!Val0->getType()->isIntOrIntVectorTy()) {
2920 return Error(ModifierLoc, "nuw only applies to integer operations");
2922 return Error(ModifierLoc, "nsw only applies to integer operations");
2924 // Check that the type is valid for the operator.
2926 case Instruction::Add:
2927 case Instruction::Sub:
2928 case Instruction::Mul:
2929 case Instruction::UDiv:
2930 case Instruction::SDiv:
2931 case Instruction::URem:
2932 case Instruction::SRem:
2933 case Instruction::Shl:
2934 case Instruction::AShr:
2935 case Instruction::LShr:
2936 if (!Val0->getType()->isIntOrIntVectorTy())
2937 return Error(ID.Loc, "constexpr requires integer operands");
2939 case Instruction::FAdd:
2940 case Instruction::FSub:
2941 case Instruction::FMul:
2942 case Instruction::FDiv:
2943 case Instruction::FRem:
2944 if (!Val0->getType()->isFPOrFPVectorTy())
2945 return Error(ID.Loc, "constexpr requires fp operands");
2947 default: llvm_unreachable("Unknown binary operator!");
2950 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2951 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2952 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2953 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2955 ID.Kind = ValID::t_Constant;
2959 // Logical Operations
2962 case lltok::kw_xor: {
2963 unsigned Opc = Lex.getUIntVal();
2964 Constant *Val0, *Val1;
2966 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2967 ParseGlobalTypeAndValue(Val0) ||
2968 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2969 ParseGlobalTypeAndValue(Val1) ||
2970 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2972 if (Val0->getType() != Val1->getType())
2973 return Error(ID.Loc, "operands of constexpr must have same type");
2974 if (!Val0->getType()->isIntOrIntVectorTy())
2975 return Error(ID.Loc,
2976 "constexpr requires integer or integer vector operands");
2977 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2978 ID.Kind = ValID::t_Constant;
2982 case lltok::kw_getelementptr:
2983 case lltok::kw_shufflevector:
2984 case lltok::kw_insertelement:
2985 case lltok::kw_extractelement:
2986 case lltok::kw_select: {
2987 unsigned Opc = Lex.getUIntVal();
2988 SmallVector<Constant*, 16> Elts;
2989 bool InBounds = false;
2993 if (Opc == Instruction::GetElementPtr)
2994 InBounds = EatIfPresent(lltok::kw_inbounds);
2996 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2999 LocTy ExplicitTypeLoc = Lex.getLoc();
3000 if (Opc == Instruction::GetElementPtr) {
3001 if (ParseType(Ty) ||
3002 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3006 if (ParseGlobalValueVector(Elts) ||
3007 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3010 if (Opc == Instruction::GetElementPtr) {
3011 if (Elts.size() == 0 ||
3012 !Elts[0]->getType()->getScalarType()->isPointerTy())
3013 return Error(ID.Loc, "base of getelementptr must be a pointer");
3015 Type *BaseType = Elts[0]->getType();
3016 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3017 if (Ty != BasePointerType->getElementType())
3020 "explicit pointee type doesn't match operand's pointee type");
3022 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3023 for (Constant *Val : Indices) {
3024 Type *ValTy = Val->getType();
3025 if (!ValTy->getScalarType()->isIntegerTy())
3026 return Error(ID.Loc, "getelementptr index must be an integer");
3027 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3028 return Error(ID.Loc, "getelementptr index type missmatch");
3029 if (ValTy->isVectorTy()) {
3030 unsigned ValNumEl = ValTy->getVectorNumElements();
3031 unsigned PtrNumEl = BaseType->getVectorNumElements();
3032 if (ValNumEl != PtrNumEl)
3035 "getelementptr vector index has a wrong number of elements");
3039 SmallPtrSet<Type*, 4> Visited;
3040 if (!Indices.empty() && !Ty->isSized(&Visited))
3041 return Error(ID.Loc, "base element of getelementptr must be sized");
3043 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3044 return Error(ID.Loc, "invalid getelementptr indices");
3046 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3047 } else if (Opc == Instruction::Select) {
3048 if (Elts.size() != 3)
3049 return Error(ID.Loc, "expected three operands to select");
3050 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3052 return Error(ID.Loc, Reason);
3053 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3054 } else if (Opc == Instruction::ShuffleVector) {
3055 if (Elts.size() != 3)
3056 return Error(ID.Loc, "expected three operands to shufflevector");
3057 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3058 return Error(ID.Loc, "invalid operands to shufflevector");
3060 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3061 } else if (Opc == Instruction::ExtractElement) {
3062 if (Elts.size() != 2)
3063 return Error(ID.Loc, "expected two operands to extractelement");
3064 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3065 return Error(ID.Loc, "invalid extractelement operands");
3066 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3068 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3069 if (Elts.size() != 3)
3070 return Error(ID.Loc, "expected three operands to insertelement");
3071 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3072 return Error(ID.Loc, "invalid insertelement operands");
3074 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3077 ID.Kind = ValID::t_Constant;
3086 /// ParseGlobalValue - Parse a global value with the specified type.
3087 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3091 bool Parsed = ParseValID(ID) ||
3092 ConvertValIDToValue(Ty, ID, V, nullptr);
3093 if (V && !(C = dyn_cast<Constant>(V)))
3094 return Error(ID.Loc, "global values must be constants");
3098 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3100 return ParseType(Ty) ||
3101 ParseGlobalValue(Ty, V);
3104 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3107 LocTy KwLoc = Lex.getLoc();
3108 if (!EatIfPresent(lltok::kw_comdat))
3111 if (EatIfPresent(lltok::lparen)) {
3112 if (Lex.getKind() != lltok::ComdatVar)
3113 return TokError("expected comdat variable");
3114 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3116 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3119 if (GlobalName.empty())
3120 return TokError("comdat cannot be unnamed");
3121 C = getComdat(GlobalName, KwLoc);
3127 /// ParseGlobalValueVector
3129 /// ::= TypeAndValue (',' TypeAndValue)*
3130 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3132 if (Lex.getKind() == lltok::rbrace ||
3133 Lex.getKind() == lltok::rsquare ||
3134 Lex.getKind() == lltok::greater ||
3135 Lex.getKind() == lltok::rparen)
3139 if (ParseGlobalTypeAndValue(C)) return true;
3142 while (EatIfPresent(lltok::comma)) {
3143 if (ParseGlobalTypeAndValue(C)) return true;
3150 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3151 SmallVector<Metadata *, 16> Elts;
3152 if (ParseMDNodeVector(Elts))
3155 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3162 /// ::= !DILocation(...)
3163 bool LLParser::ParseMDNode(MDNode *&N) {
3164 if (Lex.getKind() == lltok::MetadataVar)
3165 return ParseSpecializedMDNode(N);
3167 return ParseToken(lltok::exclaim, "expected '!' here") ||
3171 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3173 if (Lex.getKind() == lltok::lbrace)
3174 return ParseMDTuple(N);
3177 return ParseMDNodeID(N);
3182 /// Structure to represent an optional metadata field.
3183 template <class FieldTy> struct MDFieldImpl {
3184 typedef MDFieldImpl ImplTy;
3188 void assign(FieldTy Val) {
3190 this->Val = std::move(Val);
3193 explicit MDFieldImpl(FieldTy Default)
3194 : Val(std::move(Default)), Seen(false) {}
3197 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3200 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3201 : ImplTy(Default), Max(Max) {}
3203 struct LineField : public MDUnsignedField {
3204 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3206 struct ColumnField : public MDUnsignedField {
3207 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3209 struct DwarfTagField : public MDUnsignedField {
3210 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3211 DwarfTagField(dwarf::Tag DefaultTag)
3212 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3214 struct DwarfAttEncodingField : public MDUnsignedField {
3215 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3217 struct DwarfVirtualityField : public MDUnsignedField {
3218 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3220 struct DwarfLangField : public MDUnsignedField {
3221 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3224 struct DIFlagField : public MDUnsignedField {
3225 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3228 struct MDSignedField : public MDFieldImpl<int64_t> {
3232 MDSignedField(int64_t Default = 0)
3233 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3234 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3235 : ImplTy(Default), Min(Min), Max(Max) {}
3238 struct MDBoolField : public MDFieldImpl<bool> {
3239 MDBoolField(bool Default = false) : ImplTy(Default) {}
3241 struct MDField : public MDFieldImpl<Metadata *> {
3244 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3246 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3247 MDConstant() : ImplTy(nullptr) {}
3249 struct MDStringField : public MDFieldImpl<MDString *> {
3251 MDStringField(bool AllowEmpty = true)
3252 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3254 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3255 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3263 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3264 MDUnsignedField &Result) {
3265 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3266 return TokError("expected unsigned integer");
3268 auto &U = Lex.getAPSIntVal();
3269 if (U.ugt(Result.Max))
3270 return TokError("value for '" + Name + "' too large, limit is " +
3272 Result.assign(U.getZExtValue());
3273 assert(Result.Val <= Result.Max && "Expected value in range");
3279 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3280 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3283 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3284 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3288 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3289 if (Lex.getKind() == lltok::APSInt)
3290 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3292 if (Lex.getKind() != lltok::DwarfTag)
3293 return TokError("expected DWARF tag");
3295 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3296 if (Tag == dwarf::DW_TAG_invalid)
3297 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3298 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3306 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3307 DwarfVirtualityField &Result) {
3308 if (Lex.getKind() == lltok::APSInt)
3309 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3311 if (Lex.getKind() != lltok::DwarfVirtuality)
3312 return TokError("expected DWARF virtuality code");
3314 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3316 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3317 Lex.getStrVal() + "'");
3318 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3319 Result.assign(Virtuality);
3325 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3326 if (Lex.getKind() == lltok::APSInt)
3327 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3329 if (Lex.getKind() != lltok::DwarfLang)
3330 return TokError("expected DWARF language");
3332 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3334 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3336 assert(Lang <= Result.Max && "Expected valid DWARF language");
3337 Result.assign(Lang);
3343 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3344 DwarfAttEncodingField &Result) {
3345 if (Lex.getKind() == lltok::APSInt)
3346 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3348 if (Lex.getKind() != lltok::DwarfAttEncoding)
3349 return TokError("expected DWARF type attribute encoding");
3351 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3353 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3354 Lex.getStrVal() + "'");
3355 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3356 Result.assign(Encoding);
3363 /// ::= DIFlagVector
3364 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3366 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3367 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3369 // Parser for a single flag.
3370 auto parseFlag = [&](unsigned &Val) {
3371 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3372 return ParseUInt32(Val);
3374 if (Lex.getKind() != lltok::DIFlag)
3375 return TokError("expected debug info flag");
3377 Val = DINode::getFlag(Lex.getStrVal());
3379 return TokError(Twine("invalid debug info flag flag '") +
3380 Lex.getStrVal() + "'");
3385 // Parse the flags and combine them together.
3386 unsigned Combined = 0;
3392 } while (EatIfPresent(lltok::bar));
3394 Result.assign(Combined);
3399 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3400 MDSignedField &Result) {
3401 if (Lex.getKind() != lltok::APSInt)
3402 return TokError("expected signed integer");
3404 auto &S = Lex.getAPSIntVal();
3406 return TokError("value for '" + Name + "' too small, limit is " +
3409 return TokError("value for '" + Name + "' too large, limit is " +
3411 Result.assign(S.getExtValue());
3412 assert(Result.Val >= Result.Min && "Expected value in range");
3413 assert(Result.Val <= Result.Max && "Expected value in range");
3419 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3420 switch (Lex.getKind()) {
3422 return TokError("expected 'true' or 'false'");
3423 case lltok::kw_true:
3424 Result.assign(true);
3426 case lltok::kw_false:
3427 Result.assign(false);
3435 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3436 if (Lex.getKind() == lltok::kw_null) {
3437 if (!Result.AllowNull)
3438 return TokError("'" + Name + "' cannot be null");
3440 Result.assign(nullptr);
3445 if (ParseMetadata(MD, nullptr))
3453 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3455 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3458 Result.assign(cast<ConstantAsMetadata>(MD));
3463 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3464 LocTy ValueLoc = Lex.getLoc();
3466 if (ParseStringConstant(S))
3469 if (!Result.AllowEmpty && S.empty())
3470 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3472 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3477 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3478 SmallVector<Metadata *, 4> MDs;
3479 if (ParseMDNodeVector(MDs))
3482 Result.assign(std::move(MDs));
3486 } // end namespace llvm
3488 template <class ParserTy>
3489 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3491 if (Lex.getKind() != lltok::LabelStr)
3492 return TokError("expected field label here");
3496 } while (EatIfPresent(lltok::comma));
3501 template <class ParserTy>
3502 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3503 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3506 if (ParseToken(lltok::lparen, "expected '(' here"))
3508 if (Lex.getKind() != lltok::rparen)
3509 if (ParseMDFieldsImplBody(parseField))
3512 ClosingLoc = Lex.getLoc();
3513 return ParseToken(lltok::rparen, "expected ')' here");
3516 template <class FieldTy>
3517 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3519 return TokError("field '" + Name + "' cannot be specified more than once");
3521 LocTy Loc = Lex.getLoc();
3523 return ParseMDField(Loc, Name, Result);
3526 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3527 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3529 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3530 if (Lex.getStrVal() == #CLASS) \
3531 return Parse##CLASS(N, IsDistinct);
3532 #include "llvm/IR/Metadata.def"
3534 return TokError("expected metadata type");
3537 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3538 #define NOP_FIELD(NAME, TYPE, INIT)
3539 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3541 return Error(ClosingLoc, "missing required field '" #NAME "'");
3542 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3543 if (Lex.getStrVal() == #NAME) \
3544 return ParseMDField(#NAME, NAME);
3545 #define PARSE_MD_FIELDS() \
3546 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3549 if (ParseMDFieldsImpl([&]() -> bool { \
3550 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3551 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3554 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3556 #define GET_OR_DISTINCT(CLASS, ARGS) \
3557 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3559 /// ParseDILocationFields:
3560 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3561 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3562 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3563 OPTIONAL(line, LineField, ); \
3564 OPTIONAL(column, ColumnField, ); \
3565 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3566 OPTIONAL(inlinedAt, MDField, );
3568 #undef VISIT_MD_FIELDS
3570 Result = GET_OR_DISTINCT(
3571 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3575 /// ParseGenericDINode:
3576 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3577 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3578 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3579 REQUIRED(tag, DwarfTagField, ); \
3580 OPTIONAL(header, MDStringField, ); \
3581 OPTIONAL(operands, MDFieldList, );
3583 #undef VISIT_MD_FIELDS
3585 Result = GET_OR_DISTINCT(GenericDINode,
3586 (Context, tag.Val, header.Val, operands.Val));
3590 /// ParseDISubrange:
3591 /// ::= !DISubrange(count: 30, lowerBound: 2)
3592 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3593 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3594 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3595 OPTIONAL(lowerBound, MDSignedField, );
3597 #undef VISIT_MD_FIELDS
3599 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3603 /// ParseDIEnumerator:
3604 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3605 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3606 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3607 REQUIRED(name, MDStringField, ); \
3608 REQUIRED(value, MDSignedField, );
3610 #undef VISIT_MD_FIELDS
3612 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3616 /// ParseDIBasicType:
3617 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3618 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3619 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3620 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3621 OPTIONAL(name, MDStringField, ); \
3622 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3623 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3624 OPTIONAL(encoding, DwarfAttEncodingField, );
3626 #undef VISIT_MD_FIELDS
3628 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3629 align.Val, encoding.Val));
3633 /// ParseDIDerivedType:
3634 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3635 /// line: 7, scope: !1, baseType: !2, size: 32,
3636 /// align: 32, offset: 0, flags: 0, extraData: !3)
3637 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3638 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3639 REQUIRED(tag, DwarfTagField, ); \
3640 OPTIONAL(name, MDStringField, ); \
3641 OPTIONAL(file, MDField, ); \
3642 OPTIONAL(line, LineField, ); \
3643 OPTIONAL(scope, MDField, ); \
3644 REQUIRED(baseType, MDField, ); \
3645 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3646 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3647 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3648 OPTIONAL(flags, DIFlagField, ); \
3649 OPTIONAL(extraData, MDField, );
3651 #undef VISIT_MD_FIELDS
3653 Result = GET_OR_DISTINCT(DIDerivedType,
3654 (Context, tag.Val, name.Val, file.Val, line.Val,
3655 scope.Val, baseType.Val, size.Val, align.Val,
3656 offset.Val, flags.Val, extraData.Val));
3660 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3661 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3662 REQUIRED(tag, DwarfTagField, ); \
3663 OPTIONAL(name, MDStringField, ); \
3664 OPTIONAL(file, MDField, ); \
3665 OPTIONAL(line, LineField, ); \
3666 OPTIONAL(scope, MDField, ); \
3667 OPTIONAL(baseType, MDField, ); \
3668 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3669 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3670 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3671 OPTIONAL(flags, DIFlagField, ); \
3672 OPTIONAL(elements, MDField, ); \
3673 OPTIONAL(runtimeLang, DwarfLangField, ); \
3674 OPTIONAL(vtableHolder, MDField, ); \
3675 OPTIONAL(templateParams, MDField, ); \
3676 OPTIONAL(identifier, MDStringField, );
3678 #undef VISIT_MD_FIELDS
3680 Result = GET_OR_DISTINCT(
3682 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3683 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3684 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3688 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3689 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3690 OPTIONAL(flags, DIFlagField, ); \
3691 REQUIRED(types, MDField, );
3693 #undef VISIT_MD_FIELDS
3695 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3699 /// ParseDIFileType:
3700 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3701 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3702 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3703 REQUIRED(filename, MDStringField, ); \
3704 REQUIRED(directory, MDStringField, );
3706 #undef VISIT_MD_FIELDS
3708 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3712 /// ParseDICompileUnit:
3713 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3714 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3715 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3716 /// enums: !1, retainedTypes: !2, subprograms: !3,
3717 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3718 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3720 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3722 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3723 REQUIRED(language, DwarfLangField, ); \
3724 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3725 OPTIONAL(producer, MDStringField, ); \
3726 OPTIONAL(isOptimized, MDBoolField, ); \
3727 OPTIONAL(flags, MDStringField, ); \
3728 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3729 OPTIONAL(splitDebugFilename, MDStringField, ); \
3730 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3731 OPTIONAL(enums, MDField, ); \
3732 OPTIONAL(retainedTypes, MDField, ); \
3733 OPTIONAL(subprograms, MDField, ); \
3734 OPTIONAL(globals, MDField, ); \
3735 OPTIONAL(imports, MDField, ); \
3736 OPTIONAL(dwoId, MDUnsignedField, );
3738 #undef VISIT_MD_FIELDS
3740 Result = DICompileUnit::getDistinct(
3741 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3742 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3743 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3747 /// ParseDISubprogram:
3748 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3749 /// file: !1, line: 7, type: !2, isLocal: false,
3750 /// isDefinition: true, scopeLine: 8, containingType: !3,
3751 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3752 /// virtualIndex: 10, flags: 11,
3753 /// isOptimized: false, function: void ()* @_Z3foov,
3754 /// templateParams: !4, declaration: !5, variables: !6)
3755 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3756 auto Loc = Lex.getLoc();
3757 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3758 OPTIONAL(scope, MDField, ); \
3759 OPTIONAL(name, MDStringField, ); \
3760 OPTIONAL(linkageName, MDStringField, ); \
3761 OPTIONAL(file, MDField, ); \
3762 OPTIONAL(line, LineField, ); \
3763 OPTIONAL(type, MDField, ); \
3764 OPTIONAL(isLocal, MDBoolField, ); \
3765 OPTIONAL(isDefinition, MDBoolField, (true)); \
3766 OPTIONAL(scopeLine, LineField, ); \
3767 OPTIONAL(containingType, MDField, ); \
3768 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3769 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3770 OPTIONAL(flags, DIFlagField, ); \
3771 OPTIONAL(isOptimized, MDBoolField, ); \
3772 OPTIONAL(function, MDConstant, ); \
3773 OPTIONAL(templateParams, MDField, ); \
3774 OPTIONAL(declaration, MDField, ); \
3775 OPTIONAL(variables, MDField, );
3777 #undef VISIT_MD_FIELDS
3779 if (isDefinition.Val && !IsDistinct)
3782 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3784 Result = GET_OR_DISTINCT(
3785 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3786 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3787 scopeLine.Val, containingType.Val, virtuality.Val,
3788 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3789 templateParams.Val, declaration.Val, variables.Val));
3793 /// ParseDILexicalBlock:
3794 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3795 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3796 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3797 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3798 OPTIONAL(file, MDField, ); \
3799 OPTIONAL(line, LineField, ); \
3800 OPTIONAL(column, ColumnField, );
3802 #undef VISIT_MD_FIELDS
3804 Result = GET_OR_DISTINCT(
3805 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3809 /// ParseDILexicalBlockFile:
3810 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3811 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3812 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3813 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3814 OPTIONAL(file, MDField, ); \
3815 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3817 #undef VISIT_MD_FIELDS
3819 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3820 (Context, scope.Val, file.Val, discriminator.Val));
3824 /// ParseDINamespace:
3825 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3826 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3827 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3828 REQUIRED(scope, MDField, ); \
3829 OPTIONAL(file, MDField, ); \
3830 OPTIONAL(name, MDStringField, ); \
3831 OPTIONAL(line, LineField, );
3833 #undef VISIT_MD_FIELDS
3835 Result = GET_OR_DISTINCT(DINamespace,
3836 (Context, scope.Val, file.Val, name.Val, line.Val));
3841 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3842 /// includePath: "/usr/include", isysroot: "/")
3843 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3844 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3845 REQUIRED(scope, MDField, ); \
3846 REQUIRED(name, MDStringField, ); \
3847 OPTIONAL(configMacros, MDStringField, ); \
3848 OPTIONAL(includePath, MDStringField, ); \
3849 OPTIONAL(isysroot, MDStringField, );
3851 #undef VISIT_MD_FIELDS
3853 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3854 configMacros.Val, includePath.Val, isysroot.Val));
3858 /// ParseDITemplateTypeParameter:
3859 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3860 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3861 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3862 OPTIONAL(name, MDStringField, ); \
3863 REQUIRED(type, MDField, );
3865 #undef VISIT_MD_FIELDS
3868 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3872 /// ParseDITemplateValueParameter:
3873 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3874 /// name: "V", type: !1, value: i32 7)
3875 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3876 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3877 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3878 OPTIONAL(name, MDStringField, ); \
3879 OPTIONAL(type, MDField, ); \
3880 REQUIRED(value, MDField, );
3882 #undef VISIT_MD_FIELDS
3884 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3885 (Context, tag.Val, name.Val, type.Val, value.Val));
3889 /// ParseDIGlobalVariable:
3890 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3891 /// file: !1, line: 7, type: !2, isLocal: false,
3892 /// isDefinition: true, variable: i32* @foo,
3893 /// declaration: !3)
3894 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3895 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3896 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3897 OPTIONAL(scope, MDField, ); \
3898 OPTIONAL(linkageName, MDStringField, ); \
3899 OPTIONAL(file, MDField, ); \
3900 OPTIONAL(line, LineField, ); \
3901 OPTIONAL(type, MDField, ); \
3902 OPTIONAL(isLocal, MDBoolField, ); \
3903 OPTIONAL(isDefinition, MDBoolField, (true)); \
3904 OPTIONAL(variable, MDConstant, ); \
3905 OPTIONAL(declaration, MDField, );
3907 #undef VISIT_MD_FIELDS
3909 Result = GET_OR_DISTINCT(DIGlobalVariable,
3910 (Context, scope.Val, name.Val, linkageName.Val,
3911 file.Val, line.Val, type.Val, isLocal.Val,
3912 isDefinition.Val, variable.Val, declaration.Val));
3916 /// ParseDILocalVariable:
3917 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3918 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3919 /// ::= !DILocalVariable(scope: !0, name: "foo",
3920 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3921 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3922 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3923 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3924 OPTIONAL(name, MDStringField, ); \
3925 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3926 OPTIONAL(file, MDField, ); \
3927 OPTIONAL(line, LineField, ); \
3928 OPTIONAL(type, MDField, ); \
3929 OPTIONAL(flags, DIFlagField, );
3931 #undef VISIT_MD_FIELDS
3933 Result = GET_OR_DISTINCT(DILocalVariable,
3934 (Context, scope.Val, name.Val, file.Val, line.Val,
3935 type.Val, arg.Val, flags.Val));
3939 /// ParseDIExpression:
3940 /// ::= !DIExpression(0, 7, -1)
3941 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3942 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3945 if (ParseToken(lltok::lparen, "expected '(' here"))
3948 SmallVector<uint64_t, 8> Elements;
3949 if (Lex.getKind() != lltok::rparen)
3951 if (Lex.getKind() == lltok::DwarfOp) {
3952 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3954 Elements.push_back(Op);
3957 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3960 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3961 return TokError("expected unsigned integer");
3963 auto &U = Lex.getAPSIntVal();
3964 if (U.ugt(UINT64_MAX))
3965 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3966 Elements.push_back(U.getZExtValue());
3968 } while (EatIfPresent(lltok::comma));
3970 if (ParseToken(lltok::rparen, "expected ')' here"))
3973 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3977 /// ParseDIObjCProperty:
3978 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3979 /// getter: "getFoo", attributes: 7, type: !2)
3980 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3981 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3982 OPTIONAL(name, MDStringField, ); \
3983 OPTIONAL(file, MDField, ); \
3984 OPTIONAL(line, LineField, ); \
3985 OPTIONAL(setter, MDStringField, ); \
3986 OPTIONAL(getter, MDStringField, ); \
3987 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3988 OPTIONAL(type, MDField, );
3990 #undef VISIT_MD_FIELDS
3992 Result = GET_OR_DISTINCT(DIObjCProperty,
3993 (Context, name.Val, file.Val, line.Val, setter.Val,
3994 getter.Val, attributes.Val, type.Val));
3998 /// ParseDIImportedEntity:
3999 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4000 /// line: 7, name: "foo")
4001 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4002 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4003 REQUIRED(tag, DwarfTagField, ); \
4004 REQUIRED(scope, MDField, ); \
4005 OPTIONAL(entity, MDField, ); \
4006 OPTIONAL(line, LineField, ); \
4007 OPTIONAL(name, MDStringField, );
4009 #undef VISIT_MD_FIELDS
4011 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4012 entity.Val, line.Val, name.Val));
4016 #undef PARSE_MD_FIELD
4018 #undef REQUIRE_FIELD
4019 #undef DECLARE_FIELD
4021 /// ParseMetadataAsValue
4022 /// ::= metadata i32 %local
4023 /// ::= metadata i32 @global
4024 /// ::= metadata i32 7
4026 /// ::= metadata !{...}
4027 /// ::= metadata !"string"
4028 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4029 // Note: the type 'metadata' has already been parsed.
4031 if (ParseMetadata(MD, &PFS))
4034 V = MetadataAsValue::get(Context, MD);
4038 /// ParseValueAsMetadata
4042 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4043 PerFunctionState *PFS) {
4046 if (ParseType(Ty, TypeMsg, Loc))
4048 if (Ty->isMetadataTy())
4049 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4052 if (ParseValue(Ty, V, PFS))
4055 MD = ValueAsMetadata::get(V);
4066 /// ::= !DILocation(...)
4067 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4068 if (Lex.getKind() == lltok::MetadataVar) {
4070 if (ParseSpecializedMDNode(N))
4078 if (Lex.getKind() != lltok::exclaim)
4079 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4082 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4086 // ::= '!' STRINGCONSTANT
4087 if (Lex.getKind() == lltok::StringConstant) {
4089 if (ParseMDString(S))
4099 if (ParseMDNodeTail(N))
4106 //===----------------------------------------------------------------------===//
4107 // Function Parsing.
4108 //===----------------------------------------------------------------------===//
4110 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4111 PerFunctionState *PFS,
4112 OperatorConstraint OC) {
4113 if (Ty->isFunctionTy())
4114 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4116 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4119 return Error(ID.Loc, "Catchpad value required in this position");
4121 return Error(ID.Loc, "Cleanuppad value required in this position");
4123 llvm_unreachable("Unexpected constraint kind");
4128 case ValID::t_LocalID:
4129 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4130 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4131 return V == nullptr;
4132 case ValID::t_LocalName:
4133 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4134 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4135 return V == nullptr;
4136 case ValID::t_InlineAsm: {
4137 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4138 return Error(ID.Loc, "invalid type for inline asm constraint string");
4139 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4140 (ID.UIntVal >> 1) & 1,
4141 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4144 case ValID::t_GlobalName:
4145 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4146 return V == nullptr;
4147 case ValID::t_GlobalID:
4148 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4149 return V == nullptr;
4150 case ValID::t_APSInt:
4151 if (!Ty->isIntegerTy())
4152 return Error(ID.Loc, "integer constant must have integer type");
4153 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4154 V = ConstantInt::get(Context, ID.APSIntVal);
4156 case ValID::t_APFloat:
4157 if (!Ty->isFloatingPointTy() ||
4158 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4159 return Error(ID.Loc, "floating point constant invalid for type");
4161 // The lexer has no type info, so builds all half, float, and double FP
4162 // constants as double. Fix this here. Long double does not need this.
4163 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4166 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4168 else if (Ty->isFloatTy())
4169 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4172 V = ConstantFP::get(Context, ID.APFloatVal);
4174 if (V->getType() != Ty)
4175 return Error(ID.Loc, "floating point constant does not have type '" +
4176 getTypeString(Ty) + "'");
4180 if (!Ty->isPointerTy())
4181 return Error(ID.Loc, "null must be a pointer type");
4182 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4184 case ValID::t_Undef:
4185 // FIXME: LabelTy should not be a first-class type.
4186 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4187 return Error(ID.Loc, "invalid type for undef constant");
4188 V = UndefValue::get(Ty);
4190 case ValID::t_EmptyArray:
4191 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4192 return Error(ID.Loc, "invalid empty array initializer");
4193 V = UndefValue::get(Ty);
4196 // FIXME: LabelTy should not be a first-class type.
4197 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4198 return Error(ID.Loc, "invalid type for null constant");
4199 V = Constant::getNullValue(Ty);
4201 case ValID::t_Constant:
4202 if (ID.ConstantVal->getType() != Ty)
4203 return Error(ID.Loc, "constant expression type mismatch");
4207 case ValID::t_ConstantStruct:
4208 case ValID::t_PackedConstantStruct:
4209 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4210 if (ST->getNumElements() != ID.UIntVal)
4211 return Error(ID.Loc,
4212 "initializer with struct type has wrong # elements");
4213 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4214 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4216 // Verify that the elements are compatible with the structtype.
4217 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4218 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4219 return Error(ID.Loc, "element " + Twine(i) +
4220 " of struct initializer doesn't match struct element type");
4222 V = ConstantStruct::get(
4223 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4225 return Error(ID.Loc, "constant expression type mismatch");
4228 llvm_unreachable("Invalid ValID");
4231 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4234 auto Loc = Lex.getLoc();
4235 if (ParseValID(ID, /*PFS=*/nullptr))
4238 case ValID::t_APSInt:
4239 case ValID::t_APFloat:
4240 case ValID::t_Undef:
4241 case ValID::t_Constant:
4242 case ValID::t_ConstantStruct:
4243 case ValID::t_PackedConstantStruct: {
4245 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4247 assert(isa<Constant>(V) && "Expected a constant value");
4248 C = cast<Constant>(V);
4252 return Error(Loc, "expected a constant value");
4256 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4257 OperatorConstraint OC) {
4260 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4263 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4265 return ParseType(Ty) ||
4266 ParseValue(Ty, V, PFS);
4269 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4270 PerFunctionState &PFS) {
4273 if (ParseTypeAndValue(V, PFS)) return true;
4274 if (!isa<BasicBlock>(V))
4275 return Error(Loc, "expected a basic block");
4276 BB = cast<BasicBlock>(V);
4282 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4283 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4284 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4285 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4286 // Parse the linkage.
4287 LocTy LinkageLoc = Lex.getLoc();
4290 unsigned Visibility;
4291 unsigned DLLStorageClass;
4292 AttrBuilder RetAttrs;
4294 Type *RetType = nullptr;
4295 LocTy RetTypeLoc = Lex.getLoc();
4296 if (ParseOptionalLinkage(Linkage) ||
4297 ParseOptionalVisibility(Visibility) ||
4298 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4299 ParseOptionalCallingConv(CC) ||
4300 ParseOptionalReturnAttrs(RetAttrs) ||
4301 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4304 // Verify that the linkage is ok.
4305 switch ((GlobalValue::LinkageTypes)Linkage) {
4306 case GlobalValue::ExternalLinkage:
4307 break; // always ok.
4308 case GlobalValue::ExternalWeakLinkage:
4310 return Error(LinkageLoc, "invalid linkage for function definition");
4312 case GlobalValue::PrivateLinkage:
4313 case GlobalValue::InternalLinkage:
4314 case GlobalValue::AvailableExternallyLinkage:
4315 case GlobalValue::LinkOnceAnyLinkage:
4316 case GlobalValue::LinkOnceODRLinkage:
4317 case GlobalValue::WeakAnyLinkage:
4318 case GlobalValue::WeakODRLinkage:
4320 return Error(LinkageLoc, "invalid linkage for function declaration");
4322 case GlobalValue::AppendingLinkage:
4323 case GlobalValue::CommonLinkage:
4324 return Error(LinkageLoc, "invalid function linkage type");
4327 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4328 return Error(LinkageLoc,
4329 "symbol with local linkage must have default visibility");
4331 if (!FunctionType::isValidReturnType(RetType))
4332 return Error(RetTypeLoc, "invalid function return type");
4334 LocTy NameLoc = Lex.getLoc();
4336 std::string FunctionName;
4337 if (Lex.getKind() == lltok::GlobalVar) {
4338 FunctionName = Lex.getStrVal();
4339 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4340 unsigned NameID = Lex.getUIntVal();
4342 if (NameID != NumberedVals.size())
4343 return TokError("function expected to be numbered '%" +
4344 Twine(NumberedVals.size()) + "'");
4346 return TokError("expected function name");
4351 if (Lex.getKind() != lltok::lparen)
4352 return TokError("expected '(' in function argument list");
4354 SmallVector<ArgInfo, 8> ArgList;
4356 AttrBuilder FuncAttrs;
4357 std::vector<unsigned> FwdRefAttrGrps;
4359 std::string Section;
4363 LocTy UnnamedAddrLoc;
4364 Constant *Prefix = nullptr;
4365 Constant *Prologue = nullptr;
4366 Constant *PersonalityFn = nullptr;
4369 if (ParseArgumentList(ArgList, isVarArg) ||
4370 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4372 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4374 (EatIfPresent(lltok::kw_section) &&
4375 ParseStringConstant(Section)) ||
4376 parseOptionalComdat(FunctionName, C) ||
4377 ParseOptionalAlignment(Alignment) ||
4378 (EatIfPresent(lltok::kw_gc) &&
4379 ParseStringConstant(GC)) ||
4380 (EatIfPresent(lltok::kw_prefix) &&
4381 ParseGlobalTypeAndValue(Prefix)) ||
4382 (EatIfPresent(lltok::kw_prologue) &&
4383 ParseGlobalTypeAndValue(Prologue)) ||
4384 (EatIfPresent(lltok::kw_personality) &&
4385 ParseGlobalTypeAndValue(PersonalityFn)))
4388 if (FuncAttrs.contains(Attribute::Builtin))
4389 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4391 // If the alignment was parsed as an attribute, move to the alignment field.
4392 if (FuncAttrs.hasAlignmentAttr()) {
4393 Alignment = FuncAttrs.getAlignment();
4394 FuncAttrs.removeAttribute(Attribute::Alignment);
4397 // Okay, if we got here, the function is syntactically valid. Convert types
4398 // and do semantic checks.
4399 std::vector<Type*> ParamTypeList;
4400 SmallVector<AttributeSet, 8> Attrs;
4402 if (RetAttrs.hasAttributes())
4403 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4404 AttributeSet::ReturnIndex,
4407 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4408 ParamTypeList.push_back(ArgList[i].Ty);
4409 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4410 AttrBuilder B(ArgList[i].Attrs, i + 1);
4411 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4415 if (FuncAttrs.hasAttributes())
4416 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4417 AttributeSet::FunctionIndex,
4420 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4422 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4423 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4426 FunctionType::get(RetType, ParamTypeList, isVarArg);
4427 PointerType *PFT = PointerType::getUnqual(FT);
4430 if (!FunctionName.empty()) {
4431 // If this was a definition of a forward reference, remove the definition
4432 // from the forward reference table and fill in the forward ref.
4433 auto FRVI = ForwardRefVals.find(FunctionName);
4434 if (FRVI != ForwardRefVals.end()) {
4435 Fn = M->getFunction(FunctionName);
4437 return Error(FRVI->second.second, "invalid forward reference to "
4438 "function as global value!");
4439 if (Fn->getType() != PFT)
4440 return Error(FRVI->second.second, "invalid forward reference to "
4441 "function '" + FunctionName + "' with wrong type!");
4443 ForwardRefVals.erase(FRVI);
4444 } else if ((Fn = M->getFunction(FunctionName))) {
4445 // Reject redefinitions.
4446 return Error(NameLoc, "invalid redefinition of function '" +
4447 FunctionName + "'");
4448 } else if (M->getNamedValue(FunctionName)) {
4449 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4453 // If this is a definition of a forward referenced function, make sure the
4455 auto I = ForwardRefValIDs.find(NumberedVals.size());
4456 if (I != ForwardRefValIDs.end()) {
4457 Fn = cast<Function>(I->second.first);
4458 if (Fn->getType() != PFT)
4459 return Error(NameLoc, "type of definition and forward reference of '@" +
4460 Twine(NumberedVals.size()) + "' disagree");
4461 ForwardRefValIDs.erase(I);
4466 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4467 else // Move the forward-reference to the correct spot in the module.
4468 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4470 if (FunctionName.empty())
4471 NumberedVals.push_back(Fn);
4473 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4474 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4475 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4476 Fn->setCallingConv(CC);
4477 Fn->setAttributes(PAL);
4478 Fn->setUnnamedAddr(UnnamedAddr);
4479 Fn->setAlignment(Alignment);
4480 Fn->setSection(Section);
4482 Fn->setPersonalityFn(PersonalityFn);
4483 if (!GC.empty()) Fn->setGC(GC.c_str());
4484 Fn->setPrefixData(Prefix);
4485 Fn->setPrologueData(Prologue);
4486 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4488 // Add all of the arguments we parsed to the function.
4489 Function::arg_iterator ArgIt = Fn->arg_begin();
4490 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4491 // If the argument has a name, insert it into the argument symbol table.
4492 if (ArgList[i].Name.empty()) continue;
4494 // Set the name, if it conflicted, it will be auto-renamed.
4495 ArgIt->setName(ArgList[i].Name);
4497 if (ArgIt->getName() != ArgList[i].Name)
4498 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4499 ArgList[i].Name + "'");
4505 // Check the declaration has no block address forward references.
4507 if (FunctionName.empty()) {
4508 ID.Kind = ValID::t_GlobalID;
4509 ID.UIntVal = NumberedVals.size() - 1;
4511 ID.Kind = ValID::t_GlobalName;
4512 ID.StrVal = FunctionName;
4514 auto Blocks = ForwardRefBlockAddresses.find(ID);
4515 if (Blocks != ForwardRefBlockAddresses.end())
4516 return Error(Blocks->first.Loc,
4517 "cannot take blockaddress inside a declaration");
4521 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4523 if (FunctionNumber == -1) {
4524 ID.Kind = ValID::t_GlobalName;
4525 ID.StrVal = F.getName();
4527 ID.Kind = ValID::t_GlobalID;
4528 ID.UIntVal = FunctionNumber;
4531 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4532 if (Blocks == P.ForwardRefBlockAddresses.end())
4535 for (const auto &I : Blocks->second) {
4536 const ValID &BBID = I.first;
4537 GlobalValue *GV = I.second;
4539 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4540 "Expected local id or name");
4542 if (BBID.Kind == ValID::t_LocalName)
4543 BB = GetBB(BBID.StrVal, BBID.Loc);
4545 BB = GetBB(BBID.UIntVal, BBID.Loc);
4547 return P.Error(BBID.Loc, "referenced value is not a basic block");
4549 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4550 GV->eraseFromParent();
4553 P.ForwardRefBlockAddresses.erase(Blocks);
4557 /// ParseFunctionBody
4558 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4559 bool LLParser::ParseFunctionBody(Function &Fn) {
4560 if (Lex.getKind() != lltok::lbrace)
4561 return TokError("expected '{' in function body");
4562 Lex.Lex(); // eat the {.
4564 int FunctionNumber = -1;
4565 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4567 PerFunctionState PFS(*this, Fn, FunctionNumber);
4569 // Resolve block addresses and allow basic blocks to be forward-declared
4570 // within this function.
4571 if (PFS.resolveForwardRefBlockAddresses())
4573 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4575 // We need at least one basic block.
4576 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4577 return TokError("function body requires at least one basic block");
4579 while (Lex.getKind() != lltok::rbrace &&
4580 Lex.getKind() != lltok::kw_uselistorder)
4581 if (ParseBasicBlock(PFS)) return true;
4583 while (Lex.getKind() != lltok::rbrace)
4584 if (ParseUseListOrder(&PFS))
4590 // Verify function is ok.
4591 return PFS.FinishFunction();
4595 /// ::= LabelStr? Instruction*
4596 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4597 // If this basic block starts out with a name, remember it.
4599 LocTy NameLoc = Lex.getLoc();
4600 if (Lex.getKind() == lltok::LabelStr) {
4601 Name = Lex.getStrVal();
4605 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4607 return Error(NameLoc,
4608 "unable to create block named '" + Name + "'");
4610 std::string NameStr;
4612 // Parse the instructions in this block until we get a terminator.
4615 // This instruction may have three possibilities for a name: a) none
4616 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4617 LocTy NameLoc = Lex.getLoc();
4621 if (Lex.getKind() == lltok::LocalVarID) {
4622 NameID = Lex.getUIntVal();
4624 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4626 } else if (Lex.getKind() == lltok::LocalVar) {
4627 NameStr = Lex.getStrVal();
4629 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4633 switch (ParseInstruction(Inst, BB, PFS)) {
4634 default: llvm_unreachable("Unknown ParseInstruction result!");
4635 case InstError: return true;
4637 BB->getInstList().push_back(Inst);
4639 // With a normal result, we check to see if the instruction is followed by
4640 // a comma and metadata.
4641 if (EatIfPresent(lltok::comma))
4642 if (ParseInstructionMetadata(*Inst))
4645 case InstExtraComma:
4646 BB->getInstList().push_back(Inst);
4648 // If the instruction parser ate an extra comma at the end of it, it
4649 // *must* be followed by metadata.
4650 if (ParseInstructionMetadata(*Inst))
4655 // Set the name on the instruction.
4656 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4657 } while (!isa<TerminatorInst>(Inst));
4662 //===----------------------------------------------------------------------===//
4663 // Instruction Parsing.
4664 //===----------------------------------------------------------------------===//
4666 /// ParseInstruction - Parse one of the many different instructions.
4668 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4669 PerFunctionState &PFS) {
4670 lltok::Kind Token = Lex.getKind();
4671 if (Token == lltok::Eof)
4672 return TokError("found end of file when expecting more instructions");
4673 LocTy Loc = Lex.getLoc();
4674 unsigned KeywordVal = Lex.getUIntVal();
4675 Lex.Lex(); // Eat the keyword.
4678 default: return Error(Loc, "expected instruction opcode");
4679 // Terminator Instructions.
4680 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4681 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4682 case lltok::kw_br: return ParseBr(Inst, PFS);
4683 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4684 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4685 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4686 case lltok::kw_resume: return ParseResume(Inst, PFS);
4687 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4688 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4689 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4690 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4691 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4692 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4693 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4694 // Binary Operators.
4698 case lltok::kw_shl: {
4699 bool NUW = EatIfPresent(lltok::kw_nuw);
4700 bool NSW = EatIfPresent(lltok::kw_nsw);
4701 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4703 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4705 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4706 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4709 case lltok::kw_fadd:
4710 case lltok::kw_fsub:
4711 case lltok::kw_fmul:
4712 case lltok::kw_fdiv:
4713 case lltok::kw_frem: {
4714 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4715 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4719 Inst->setFastMathFlags(FMF);
4723 case lltok::kw_sdiv:
4724 case lltok::kw_udiv:
4725 case lltok::kw_lshr:
4726 case lltok::kw_ashr: {
4727 bool Exact = EatIfPresent(lltok::kw_exact);
4729 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4730 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4734 case lltok::kw_urem:
4735 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4738 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4739 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4740 case lltok::kw_fcmp: {
4741 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4742 int Res = ParseCompare(Inst, PFS, KeywordVal);
4746 Inst->setFastMathFlags(FMF);
4751 case lltok::kw_trunc:
4752 case lltok::kw_zext:
4753 case lltok::kw_sext:
4754 case lltok::kw_fptrunc:
4755 case lltok::kw_fpext:
4756 case lltok::kw_bitcast:
4757 case lltok::kw_addrspacecast:
4758 case lltok::kw_uitofp:
4759 case lltok::kw_sitofp:
4760 case lltok::kw_fptoui:
4761 case lltok::kw_fptosi:
4762 case lltok::kw_inttoptr:
4763 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4765 case lltok::kw_select: return ParseSelect(Inst, PFS);
4766 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4767 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4768 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4769 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4770 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4771 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4773 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4774 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4775 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4777 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4778 case lltok::kw_load: return ParseLoad(Inst, PFS);
4779 case lltok::kw_store: return ParseStore(Inst, PFS);
4780 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4781 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4782 case lltok::kw_fence: return ParseFence(Inst, PFS);
4783 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4784 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4785 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4789 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4790 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4791 if (Opc == Instruction::FCmp) {
4792 switch (Lex.getKind()) {
4793 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4794 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4795 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4796 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4797 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4798 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4799 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4800 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4801 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4802 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4803 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4804 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4805 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4806 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4807 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4808 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4809 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4812 switch (Lex.getKind()) {
4813 default: return TokError("expected icmp predicate (e.g. 'eq')");
4814 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4815 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4816 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4817 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4818 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4819 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4820 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4821 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4822 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4823 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4830 //===----------------------------------------------------------------------===//
4831 // Terminator Instructions.
4832 //===----------------------------------------------------------------------===//
4834 /// ParseRet - Parse a return instruction.
4835 /// ::= 'ret' void (',' !dbg, !1)*
4836 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4837 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4838 PerFunctionState &PFS) {
4839 SMLoc TypeLoc = Lex.getLoc();
4841 if (ParseType(Ty, true /*void allowed*/)) return true;
4843 Type *ResType = PFS.getFunction().getReturnType();
4845 if (Ty->isVoidTy()) {
4846 if (!ResType->isVoidTy())
4847 return Error(TypeLoc, "value doesn't match function result type '" +
4848 getTypeString(ResType) + "'");
4850 Inst = ReturnInst::Create(Context);
4855 if (ParseValue(Ty, RV, PFS)) return true;
4857 if (ResType != RV->getType())
4858 return Error(TypeLoc, "value doesn't match function result type '" +
4859 getTypeString(ResType) + "'");
4861 Inst = ReturnInst::Create(Context, RV);
4867 /// ::= 'br' TypeAndValue
4868 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4869 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4872 BasicBlock *Op1, *Op2;
4873 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4875 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4876 Inst = BranchInst::Create(BB);
4880 if (Op0->getType() != Type::getInt1Ty(Context))
4881 return Error(Loc, "branch condition must have 'i1' type");
4883 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4884 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4885 ParseToken(lltok::comma, "expected ',' after true destination") ||
4886 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4889 Inst = BranchInst::Create(Op1, Op2, Op0);
4895 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4897 /// ::= (TypeAndValue ',' TypeAndValue)*
4898 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4899 LocTy CondLoc, BBLoc;
4901 BasicBlock *DefaultBB;
4902 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4903 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4904 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4905 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4908 if (!Cond->getType()->isIntegerTy())
4909 return Error(CondLoc, "switch condition must have integer type");
4911 // Parse the jump table pairs.
4912 SmallPtrSet<Value*, 32> SeenCases;
4913 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4914 while (Lex.getKind() != lltok::rsquare) {
4918 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4919 ParseToken(lltok::comma, "expected ',' after case value") ||
4920 ParseTypeAndBasicBlock(DestBB, PFS))
4923 if (!SeenCases.insert(Constant).second)
4924 return Error(CondLoc, "duplicate case value in switch");
4925 if (!isa<ConstantInt>(Constant))
4926 return Error(CondLoc, "case value is not a constant integer");
4928 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4931 Lex.Lex(); // Eat the ']'.
4933 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4934 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4935 SI->addCase(Table[i].first, Table[i].second);
4942 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4943 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4946 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4947 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4948 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4951 if (!Address->getType()->isPointerTy())
4952 return Error(AddrLoc, "indirectbr address must have pointer type");
4954 // Parse the destination list.
4955 SmallVector<BasicBlock*, 16> DestList;
4957 if (Lex.getKind() != lltok::rsquare) {
4959 if (ParseTypeAndBasicBlock(DestBB, PFS))
4961 DestList.push_back(DestBB);
4963 while (EatIfPresent(lltok::comma)) {
4964 if (ParseTypeAndBasicBlock(DestBB, PFS))
4966 DestList.push_back(DestBB);
4970 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4973 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4974 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4975 IBI->addDestination(DestList[i]);
4982 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4983 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4984 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4985 LocTy CallLoc = Lex.getLoc();
4986 AttrBuilder RetAttrs, FnAttrs;
4987 std::vector<unsigned> FwdRefAttrGrps;
4990 Type *RetType = nullptr;
4993 SmallVector<ParamInfo, 16> ArgList;
4995 BasicBlock *NormalBB, *UnwindBB;
4996 if (ParseOptionalCallingConv(CC) ||
4997 ParseOptionalReturnAttrs(RetAttrs) ||
4998 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4999 ParseValID(CalleeID) ||
5000 ParseParameterList(ArgList, PFS) ||
5001 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5003 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5004 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5005 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5006 ParseTypeAndBasicBlock(UnwindBB, PFS))
5009 // If RetType is a non-function pointer type, then this is the short syntax
5010 // for the call, which means that RetType is just the return type. Infer the
5011 // rest of the function argument types from the arguments that are present.
5012 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5014 // Pull out the types of all of the arguments...
5015 std::vector<Type*> ParamTypes;
5016 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5017 ParamTypes.push_back(ArgList[i].V->getType());
5019 if (!FunctionType::isValidReturnType(RetType))
5020 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5022 Ty = FunctionType::get(RetType, ParamTypes, false);
5027 // Look up the callee.
5029 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5032 // Set up the Attribute for the function.
5033 SmallVector<AttributeSet, 8> Attrs;
5034 if (RetAttrs.hasAttributes())
5035 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5036 AttributeSet::ReturnIndex,
5039 SmallVector<Value*, 8> Args;
5041 // Loop through FunctionType's arguments and ensure they are specified
5042 // correctly. Also, gather any parameter attributes.
5043 FunctionType::param_iterator I = Ty->param_begin();
5044 FunctionType::param_iterator E = Ty->param_end();
5045 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5046 Type *ExpectedTy = nullptr;
5049 } else if (!Ty->isVarArg()) {
5050 return Error(ArgList[i].Loc, "too many arguments specified");
5053 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5054 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5055 getTypeString(ExpectedTy) + "'");
5056 Args.push_back(ArgList[i].V);
5057 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5058 AttrBuilder B(ArgList[i].Attrs, i + 1);
5059 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5064 return Error(CallLoc, "not enough parameters specified for call");
5066 if (FnAttrs.hasAttributes()) {
5067 if (FnAttrs.hasAlignmentAttr())
5068 return Error(CallLoc, "invoke instructions may not have an alignment");
5070 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5071 AttributeSet::FunctionIndex,
5075 // Finish off the Attribute and check them
5076 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5078 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
5079 II->setCallingConv(CC);
5080 II->setAttributes(PAL);
5081 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5087 /// ::= 'resume' TypeAndValue
5088 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5089 Value *Exn; LocTy ExnLoc;
5090 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5093 ResumeInst *RI = ResumeInst::Create(Exn);
5098 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5099 PerFunctionState &PFS) {
5100 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5103 while (Lex.getKind() != lltok::rsquare) {
5104 // If this isn't the first argument, we need a comma.
5105 if (!Args.empty() &&
5106 ParseToken(lltok::comma, "expected ',' in argument list"))
5109 // Parse the argument.
5111 Type *ArgTy = nullptr;
5112 if (ParseType(ArgTy, ArgLoc))
5116 if (ArgTy->isMetadataTy()) {
5117 if (ParseMetadataAsValue(V, PFS))
5120 if (ParseValue(ArgTy, V, PFS))
5126 Lex.Lex(); // Lex the ']'.
5131 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5132 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5133 Value *CleanupPad = nullptr;
5135 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5138 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5141 BasicBlock *UnwindBB = nullptr;
5142 if (Lex.getKind() == lltok::kw_to) {
5144 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5147 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5152 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5157 /// ::= 'catchret' Value 'to' TypeAndValue
5158 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5159 Value *CatchPad = nullptr;
5161 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5165 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5166 ParseTypeAndBasicBlock(BB, PFS))
5169 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5174 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5175 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5176 SmallVector<Value *, 8> Args;
5177 if (ParseExceptionArgs(Args, PFS))
5180 BasicBlock *NormalBB, *UnwindBB;
5181 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5182 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5183 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5184 ParseTypeAndBasicBlock(UnwindBB, PFS))
5187 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5191 /// ParseTerminatePad
5192 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5193 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5194 SmallVector<Value *, 8> Args;
5195 if (ParseExceptionArgs(Args, PFS))
5198 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5201 BasicBlock *UnwindBB = nullptr;
5202 if (Lex.getKind() == lltok::kw_to) {
5204 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5207 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5212 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5217 /// ::= 'cleanuppad' ParamList
5218 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5219 SmallVector<Value *, 8> Args;
5220 if (ParseExceptionArgs(Args, PFS))
5223 Inst = CleanupPadInst::Create(Context, Args);
5227 /// ParseCatchEndPad
5228 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5229 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5230 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5233 BasicBlock *UnwindBB = nullptr;
5234 if (Lex.getKind() == lltok::kw_to) {
5236 if (Lex.getKind() == lltok::kw_caller) {
5242 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5247 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5251 /// ParseCatchEndPad
5252 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5253 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5254 Value *CleanupPad = nullptr;
5256 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5259 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5262 BasicBlock *UnwindBB = nullptr;
5263 if (Lex.getKind() == lltok::kw_to) {
5265 if (Lex.getKind() == lltok::kw_caller) {
5271 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5276 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5280 //===----------------------------------------------------------------------===//
5281 // Binary Operators.
5282 //===----------------------------------------------------------------------===//
5285 /// ::= ArithmeticOps TypeAndValue ',' Value
5287 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5288 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5289 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5290 unsigned Opc, unsigned OperandType) {
5291 LocTy Loc; Value *LHS, *RHS;
5292 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5293 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5294 ParseValue(LHS->getType(), RHS, PFS))
5298 switch (OperandType) {
5299 default: llvm_unreachable("Unknown operand type!");
5300 case 0: // int or FP.
5301 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5302 LHS->getType()->isFPOrFPVectorTy();
5304 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5305 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5309 return Error(Loc, "invalid operand type for instruction");
5311 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5316 /// ::= ArithmeticOps TypeAndValue ',' Value {
5317 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5319 LocTy Loc; Value *LHS, *RHS;
5320 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5321 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5322 ParseValue(LHS->getType(), RHS, PFS))
5325 if (!LHS->getType()->isIntOrIntVectorTy())
5326 return Error(Loc,"instruction requires integer or integer vector operands");
5328 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5334 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5335 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5336 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5338 // Parse the integer/fp comparison predicate.
5342 if (ParseCmpPredicate(Pred, Opc) ||
5343 ParseTypeAndValue(LHS, Loc, PFS) ||
5344 ParseToken(lltok::comma, "expected ',' after compare value") ||
5345 ParseValue(LHS->getType(), RHS, PFS))
5348 if (Opc == Instruction::FCmp) {
5349 if (!LHS->getType()->isFPOrFPVectorTy())
5350 return Error(Loc, "fcmp requires floating point operands");
5351 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5353 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5354 if (!LHS->getType()->isIntOrIntVectorTy() &&
5355 !LHS->getType()->getScalarType()->isPointerTy())
5356 return Error(Loc, "icmp requires integer operands");
5357 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5362 //===----------------------------------------------------------------------===//
5363 // Other Instructions.
5364 //===----------------------------------------------------------------------===//
5368 /// ::= CastOpc TypeAndValue 'to' Type
5369 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5373 Type *DestTy = nullptr;
5374 if (ParseTypeAndValue(Op, Loc, PFS) ||
5375 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5379 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5380 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5381 return Error(Loc, "invalid cast opcode for cast from '" +
5382 getTypeString(Op->getType()) + "' to '" +
5383 getTypeString(DestTy) + "'");
5385 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5390 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5391 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5393 Value *Op0, *Op1, *Op2;
5394 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5395 ParseToken(lltok::comma, "expected ',' after select condition") ||
5396 ParseTypeAndValue(Op1, PFS) ||
5397 ParseToken(lltok::comma, "expected ',' after select value") ||
5398 ParseTypeAndValue(Op2, PFS))
5401 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5402 return Error(Loc, Reason);
5404 Inst = SelectInst::Create(Op0, Op1, Op2);
5409 /// ::= 'va_arg' TypeAndValue ',' Type
5410 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5412 Type *EltTy = nullptr;
5414 if (ParseTypeAndValue(Op, PFS) ||
5415 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5416 ParseType(EltTy, TypeLoc))
5419 if (!EltTy->isFirstClassType())
5420 return Error(TypeLoc, "va_arg requires operand with first class type");
5422 Inst = new VAArgInst(Op, EltTy);
5426 /// ParseExtractElement
5427 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5428 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5431 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5432 ParseToken(lltok::comma, "expected ',' after extract value") ||
5433 ParseTypeAndValue(Op1, PFS))
5436 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5437 return Error(Loc, "invalid extractelement operands");
5439 Inst = ExtractElementInst::Create(Op0, Op1);
5443 /// ParseInsertElement
5444 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5445 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5447 Value *Op0, *Op1, *Op2;
5448 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5449 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5450 ParseTypeAndValue(Op1, PFS) ||
5451 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5452 ParseTypeAndValue(Op2, PFS))
5455 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5456 return Error(Loc, "invalid insertelement operands");
5458 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5462 /// ParseShuffleVector
5463 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5464 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5466 Value *Op0, *Op1, *Op2;
5467 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5468 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5469 ParseTypeAndValue(Op1, PFS) ||
5470 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5471 ParseTypeAndValue(Op2, PFS))
5474 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5475 return Error(Loc, "invalid shufflevector operands");
5477 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5482 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5483 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5484 Type *Ty = nullptr; LocTy TypeLoc;
5487 if (ParseType(Ty, TypeLoc) ||
5488 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5489 ParseValue(Ty, Op0, PFS) ||
5490 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5491 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5492 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5495 bool AteExtraComma = false;
5496 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5498 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5500 if (!EatIfPresent(lltok::comma))
5503 if (Lex.getKind() == lltok::MetadataVar) {
5504 AteExtraComma = true;
5508 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5509 ParseValue(Ty, Op0, PFS) ||
5510 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5511 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5512 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5516 if (!Ty->isFirstClassType())
5517 return Error(TypeLoc, "phi node must have first class type");
5519 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5520 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5521 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5523 return AteExtraComma ? InstExtraComma : InstNormal;
5527 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5529 /// ::= 'catch' TypeAndValue
5531 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5532 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5533 Type *Ty = nullptr; LocTy TyLoc;
5535 if (ParseType(Ty, TyLoc))
5538 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5539 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5541 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5542 LandingPadInst::ClauseType CT;
5543 if (EatIfPresent(lltok::kw_catch))
5544 CT = LandingPadInst::Catch;
5545 else if (EatIfPresent(lltok::kw_filter))
5546 CT = LandingPadInst::Filter;
5548 return TokError("expected 'catch' or 'filter' clause type");
5552 if (ParseTypeAndValue(V, VLoc, PFS))
5555 // A 'catch' type expects a non-array constant. A filter clause expects an
5557 if (CT == LandingPadInst::Catch) {
5558 if (isa<ArrayType>(V->getType()))
5559 Error(VLoc, "'catch' clause has an invalid type");
5561 if (!isa<ArrayType>(V->getType()))
5562 Error(VLoc, "'filter' clause has an invalid type");
5565 Constant *CV = dyn_cast<Constant>(V);
5567 return Error(VLoc, "clause argument must be a constant");
5571 Inst = LP.release();
5576 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5577 /// ParameterList OptionalAttrs
5578 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5579 /// ParameterList OptionalAttrs
5580 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5581 /// ParameterList OptionalAttrs
5582 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5583 CallInst::TailCallKind TCK) {
5584 AttrBuilder RetAttrs, FnAttrs;
5585 std::vector<unsigned> FwdRefAttrGrps;
5588 Type *RetType = nullptr;
5591 SmallVector<ParamInfo, 16> ArgList;
5592 LocTy CallLoc = Lex.getLoc();
5594 if ((TCK != CallInst::TCK_None &&
5595 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5596 ParseOptionalCallingConv(CC) ||
5597 ParseOptionalReturnAttrs(RetAttrs) ||
5598 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5599 ParseValID(CalleeID) ||
5600 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5601 PFS.getFunction().isVarArg()) ||
5602 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5606 // If RetType is a non-function pointer type, then this is the short syntax
5607 // for the call, which means that RetType is just the return type. Infer the
5608 // rest of the function argument types from the arguments that are present.
5609 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5611 // Pull out the types of all of the arguments...
5612 std::vector<Type*> ParamTypes;
5613 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5614 ParamTypes.push_back(ArgList[i].V->getType());
5616 if (!FunctionType::isValidReturnType(RetType))
5617 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5619 Ty = FunctionType::get(RetType, ParamTypes, false);
5624 // Look up the callee.
5626 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5629 // Set up the Attribute for the function.
5630 SmallVector<AttributeSet, 8> Attrs;
5631 if (RetAttrs.hasAttributes())
5632 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5633 AttributeSet::ReturnIndex,
5636 SmallVector<Value*, 8> Args;
5638 // Loop through FunctionType's arguments and ensure they are specified
5639 // correctly. Also, gather any parameter attributes.
5640 FunctionType::param_iterator I = Ty->param_begin();
5641 FunctionType::param_iterator E = Ty->param_end();
5642 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5643 Type *ExpectedTy = nullptr;
5646 } else if (!Ty->isVarArg()) {
5647 return Error(ArgList[i].Loc, "too many arguments specified");
5650 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5651 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5652 getTypeString(ExpectedTy) + "'");
5653 Args.push_back(ArgList[i].V);
5654 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5655 AttrBuilder B(ArgList[i].Attrs, i + 1);
5656 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5661 return Error(CallLoc, "not enough parameters specified for call");
5663 if (FnAttrs.hasAttributes()) {
5664 if (FnAttrs.hasAlignmentAttr())
5665 return Error(CallLoc, "call instructions may not have an alignment");
5667 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5668 AttributeSet::FunctionIndex,
5672 // Finish off the Attribute and check them
5673 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5675 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5676 CI->setTailCallKind(TCK);
5677 CI->setCallingConv(CC);
5678 CI->setAttributes(PAL);
5679 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5684 //===----------------------------------------------------------------------===//
5685 // Memory Instructions.
5686 //===----------------------------------------------------------------------===//
5689 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5690 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5691 Value *Size = nullptr;
5692 LocTy SizeLoc, TyLoc;
5693 unsigned Alignment = 0;
5696 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5698 if (ParseType(Ty, TyLoc)) return true;
5700 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5701 return Error(TyLoc, "invalid type for alloca");
5703 bool AteExtraComma = false;
5704 if (EatIfPresent(lltok::comma)) {
5705 if (Lex.getKind() == lltok::kw_align) {
5706 if (ParseOptionalAlignment(Alignment)) return true;
5707 } else if (Lex.getKind() == lltok::MetadataVar) {
5708 AteExtraComma = true;
5710 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5711 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5716 if (Size && !Size->getType()->isIntegerTy())
5717 return Error(SizeLoc, "element count must have integer type");
5719 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5720 AI->setUsedWithInAlloca(IsInAlloca);
5722 return AteExtraComma ? InstExtraComma : InstNormal;
5726 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5727 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5728 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5729 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5730 Value *Val; LocTy Loc;
5731 unsigned Alignment = 0;
5732 bool AteExtraComma = false;
5733 bool isAtomic = false;
5734 AtomicOrdering Ordering = NotAtomic;
5735 SynchronizationScope Scope = CrossThread;
5737 if (Lex.getKind() == lltok::kw_atomic) {
5742 bool isVolatile = false;
5743 if (Lex.getKind() == lltok::kw_volatile) {
5749 LocTy ExplicitTypeLoc = Lex.getLoc();
5750 if (ParseType(Ty) ||
5751 ParseToken(lltok::comma, "expected comma after load's type") ||
5752 ParseTypeAndValue(Val, Loc, PFS) ||
5753 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5754 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5757 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5758 return Error(Loc, "load operand must be a pointer to a first class type");
5759 if (isAtomic && !Alignment)
5760 return Error(Loc, "atomic load must have explicit non-zero alignment");
5761 if (Ordering == Release || Ordering == AcquireRelease)
5762 return Error(Loc, "atomic load cannot use Release ordering");
5764 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5765 return Error(ExplicitTypeLoc,
5766 "explicit pointee type doesn't match operand's pointee type");
5768 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5769 return AteExtraComma ? InstExtraComma : InstNormal;
5774 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5775 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5776 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5777 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5778 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5779 unsigned Alignment = 0;
5780 bool AteExtraComma = false;
5781 bool isAtomic = false;
5782 AtomicOrdering Ordering = NotAtomic;
5783 SynchronizationScope Scope = CrossThread;
5785 if (Lex.getKind() == lltok::kw_atomic) {
5790 bool isVolatile = false;
5791 if (Lex.getKind() == lltok::kw_volatile) {
5796 if (ParseTypeAndValue(Val, Loc, PFS) ||
5797 ParseToken(lltok::comma, "expected ',' after store operand") ||
5798 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5799 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5800 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5803 if (!Ptr->getType()->isPointerTy())
5804 return Error(PtrLoc, "store operand must be a pointer");
5805 if (!Val->getType()->isFirstClassType())
5806 return Error(Loc, "store operand must be a first class value");
5807 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5808 return Error(Loc, "stored value and pointer type do not match");
5809 if (isAtomic && !Alignment)
5810 return Error(Loc, "atomic store must have explicit non-zero alignment");
5811 if (Ordering == Acquire || Ordering == AcquireRelease)
5812 return Error(Loc, "atomic store cannot use Acquire ordering");
5814 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5815 return AteExtraComma ? InstExtraComma : InstNormal;
5819 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5820 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5821 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5822 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5823 bool AteExtraComma = false;
5824 AtomicOrdering SuccessOrdering = NotAtomic;
5825 AtomicOrdering FailureOrdering = NotAtomic;
5826 SynchronizationScope Scope = CrossThread;
5827 bool isVolatile = false;
5828 bool isWeak = false;
5830 if (EatIfPresent(lltok::kw_weak))
5833 if (EatIfPresent(lltok::kw_volatile))
5836 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5837 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5838 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5839 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5840 ParseTypeAndValue(New, NewLoc, PFS) ||
5841 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5842 ParseOrdering(FailureOrdering))
5845 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5846 return TokError("cmpxchg cannot be unordered");
5847 if (SuccessOrdering < FailureOrdering)
5848 return TokError("cmpxchg must be at least as ordered on success as failure");
5849 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5850 return TokError("cmpxchg failure ordering cannot include release semantics");
5851 if (!Ptr->getType()->isPointerTy())
5852 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5853 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5854 return Error(CmpLoc, "compare value and pointer type do not match");
5855 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5856 return Error(NewLoc, "new value and pointer type do not match");
5857 if (!New->getType()->isIntegerTy())
5858 return Error(NewLoc, "cmpxchg operand must be an integer");
5859 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5860 if (Size < 8 || (Size & (Size - 1)))
5861 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5864 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5865 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5866 CXI->setVolatile(isVolatile);
5867 CXI->setWeak(isWeak);
5869 return AteExtraComma ? InstExtraComma : InstNormal;
5873 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5874 /// 'singlethread'? AtomicOrdering
5875 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5876 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5877 bool AteExtraComma = false;
5878 AtomicOrdering Ordering = NotAtomic;
5879 SynchronizationScope Scope = CrossThread;
5880 bool isVolatile = false;
5881 AtomicRMWInst::BinOp Operation;
5883 if (EatIfPresent(lltok::kw_volatile))
5886 switch (Lex.getKind()) {
5887 default: return TokError("expected binary operation in atomicrmw");
5888 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5889 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5890 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5891 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5892 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5893 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5894 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5895 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5896 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5897 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5898 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5900 Lex.Lex(); // Eat the operation.
5902 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5903 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5904 ParseTypeAndValue(Val, ValLoc, PFS) ||
5905 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5908 if (Ordering == Unordered)
5909 return TokError("atomicrmw cannot be unordered");
5910 if (!Ptr->getType()->isPointerTy())
5911 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5912 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5913 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5914 if (!Val->getType()->isIntegerTy())
5915 return Error(ValLoc, "atomicrmw operand must be an integer");
5916 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5917 if (Size < 8 || (Size & (Size - 1)))
5918 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5921 AtomicRMWInst *RMWI =
5922 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5923 RMWI->setVolatile(isVolatile);
5925 return AteExtraComma ? InstExtraComma : InstNormal;
5929 /// ::= 'fence' 'singlethread'? AtomicOrdering
5930 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5931 AtomicOrdering Ordering = NotAtomic;
5932 SynchronizationScope Scope = CrossThread;
5933 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5936 if (Ordering == Unordered)
5937 return TokError("fence cannot be unordered");
5938 if (Ordering == Monotonic)
5939 return TokError("fence cannot be monotonic");
5941 Inst = new FenceInst(Context, Ordering, Scope);
5945 /// ParseGetElementPtr
5946 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5947 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5948 Value *Ptr = nullptr;
5949 Value *Val = nullptr;
5952 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5955 LocTy ExplicitTypeLoc = Lex.getLoc();
5956 if (ParseType(Ty) ||
5957 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5958 ParseTypeAndValue(Ptr, Loc, PFS))
5961 Type *BaseType = Ptr->getType();
5962 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5963 if (!BasePointerType)
5964 return Error(Loc, "base of getelementptr must be a pointer");
5966 if (Ty != BasePointerType->getElementType())
5967 return Error(ExplicitTypeLoc,
5968 "explicit pointee type doesn't match operand's pointee type");
5970 SmallVector<Value*, 16> Indices;
5971 bool AteExtraComma = false;
5972 // GEP returns a vector of pointers if at least one of parameters is a vector.
5973 // All vector parameters should have the same vector width.
5974 unsigned GEPWidth = BaseType->isVectorTy() ?
5975 BaseType->getVectorNumElements() : 0;
5977 while (EatIfPresent(lltok::comma)) {
5978 if (Lex.getKind() == lltok::MetadataVar) {
5979 AteExtraComma = true;
5982 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5983 if (!Val->getType()->getScalarType()->isIntegerTy())
5984 return Error(EltLoc, "getelementptr index must be an integer");
5986 if (Val->getType()->isVectorTy()) {
5987 unsigned ValNumEl = Val->getType()->getVectorNumElements();
5988 if (GEPWidth && GEPWidth != ValNumEl)
5989 return Error(EltLoc,
5990 "getelementptr vector index has a wrong number of elements");
5991 GEPWidth = ValNumEl;
5993 Indices.push_back(Val);
5996 SmallPtrSet<Type*, 4> Visited;
5997 if (!Indices.empty() && !Ty->isSized(&Visited))
5998 return Error(Loc, "base element of getelementptr must be sized");
6000 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6001 return Error(Loc, "invalid getelementptr indices");
6002 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6004 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6005 return AteExtraComma ? InstExtraComma : InstNormal;
6008 /// ParseExtractValue
6009 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6010 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6011 Value *Val; LocTy Loc;
6012 SmallVector<unsigned, 4> Indices;
6014 if (ParseTypeAndValue(Val, Loc, PFS) ||
6015 ParseIndexList(Indices, AteExtraComma))
6018 if (!Val->getType()->isAggregateType())
6019 return Error(Loc, "extractvalue operand must be aggregate type");
6021 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6022 return Error(Loc, "invalid indices for extractvalue");
6023 Inst = ExtractValueInst::Create(Val, Indices);
6024 return AteExtraComma ? InstExtraComma : InstNormal;
6027 /// ParseInsertValue
6028 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6029 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6030 Value *Val0, *Val1; LocTy Loc0, Loc1;
6031 SmallVector<unsigned, 4> Indices;
6033 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6034 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6035 ParseTypeAndValue(Val1, Loc1, PFS) ||
6036 ParseIndexList(Indices, AteExtraComma))
6039 if (!Val0->getType()->isAggregateType())
6040 return Error(Loc0, "insertvalue operand must be aggregate type");
6042 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6044 return Error(Loc0, "invalid indices for insertvalue");
6045 if (IndexedType != Val1->getType())
6046 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6047 getTypeString(Val1->getType()) + "' instead of '" +
6048 getTypeString(IndexedType) + "'");
6049 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6050 return AteExtraComma ? InstExtraComma : InstNormal;
6053 //===----------------------------------------------------------------------===//
6054 // Embedded metadata.
6055 //===----------------------------------------------------------------------===//
6057 /// ParseMDNodeVector
6058 /// ::= { Element (',' Element)* }
6060 /// ::= 'null' | TypeAndValue
6061 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6062 if (ParseToken(lltok::lbrace, "expected '{' here"))
6065 // Check for an empty list.
6066 if (EatIfPresent(lltok::rbrace))
6070 // Null is a special case since it is typeless.
6071 if (EatIfPresent(lltok::kw_null)) {
6072 Elts.push_back(nullptr);
6077 if (ParseMetadata(MD, nullptr))
6080 } while (EatIfPresent(lltok::comma));
6082 return ParseToken(lltok::rbrace, "expected end of metadata node");
6085 //===----------------------------------------------------------------------===//
6086 // Use-list order directives.
6087 //===----------------------------------------------------------------------===//
6088 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6091 return Error(Loc, "value has no uses");
6093 unsigned NumUses = 0;
6094 SmallDenseMap<const Use *, unsigned, 16> Order;
6095 for (const Use &U : V->uses()) {
6096 if (++NumUses > Indexes.size())
6098 Order[&U] = Indexes[NumUses - 1];
6101 return Error(Loc, "value only has one use");
6102 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6103 return Error(Loc, "wrong number of indexes, expected " +
6104 Twine(std::distance(V->use_begin(), V->use_end())));
6106 V->sortUseList([&](const Use &L, const Use &R) {
6107 return Order.lookup(&L) < Order.lookup(&R);
6112 /// ParseUseListOrderIndexes
6113 /// ::= '{' uint32 (',' uint32)+ '}'
6114 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6115 SMLoc Loc = Lex.getLoc();
6116 if (ParseToken(lltok::lbrace, "expected '{' here"))
6118 if (Lex.getKind() == lltok::rbrace)
6119 return Lex.Error("expected non-empty list of uselistorder indexes");
6121 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6122 // indexes should be distinct numbers in the range [0, size-1], and should
6124 unsigned Offset = 0;
6126 bool IsOrdered = true;
6127 assert(Indexes.empty() && "Expected empty order vector");
6130 if (ParseUInt32(Index))
6133 // Update consistency checks.
6134 Offset += Index - Indexes.size();
6135 Max = std::max(Max, Index);
6136 IsOrdered &= Index == Indexes.size();
6138 Indexes.push_back(Index);
6139 } while (EatIfPresent(lltok::comma));
6141 if (ParseToken(lltok::rbrace, "expected '}' here"))
6144 if (Indexes.size() < 2)
6145 return Error(Loc, "expected >= 2 uselistorder indexes");
6146 if (Offset != 0 || Max >= Indexes.size())
6147 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6149 return Error(Loc, "expected uselistorder indexes to change the order");
6154 /// ParseUseListOrder
6155 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6156 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6157 SMLoc Loc = Lex.getLoc();
6158 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6162 SmallVector<unsigned, 16> Indexes;
6163 if (ParseTypeAndValue(V, PFS) ||
6164 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6165 ParseUseListOrderIndexes(Indexes))
6168 return sortUseListOrder(V, Indexes, Loc);
6171 /// ParseUseListOrderBB
6172 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6173 bool LLParser::ParseUseListOrderBB() {
6174 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6175 SMLoc Loc = Lex.getLoc();
6179 SmallVector<unsigned, 16> Indexes;
6180 if (ParseValID(Fn) ||
6181 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6182 ParseValID(Label) ||
6183 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6184 ParseUseListOrderIndexes(Indexes))
6187 // Check the function.
6189 if (Fn.Kind == ValID::t_GlobalName)
6190 GV = M->getNamedValue(Fn.StrVal);
6191 else if (Fn.Kind == ValID::t_GlobalID)
6192 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6194 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6196 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6197 auto *F = dyn_cast<Function>(GV);
6199 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6200 if (F->isDeclaration())
6201 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6203 // Check the basic block.
6204 if (Label.Kind == ValID::t_LocalID)
6205 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6206 if (Label.Kind != ValID::t_LocalName)
6207 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6208 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6210 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6211 if (!isa<BasicBlock>(V))
6212 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6214 return sortUseListOrder(V, Indexes, Loc);