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_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1002 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1003 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1004 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1005 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1006 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1007 case lltok::kw_returns_twice:
1008 B.addAttribute(Attribute::ReturnsTwice); break;
1009 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1010 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1011 case lltok::kw_sspstrong:
1012 B.addAttribute(Attribute::StackProtectStrong); break;
1013 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1014 case lltok::kw_sanitize_address:
1015 B.addAttribute(Attribute::SanitizeAddress); break;
1016 case lltok::kw_sanitize_thread:
1017 B.addAttribute(Attribute::SanitizeThread); break;
1018 case lltok::kw_sanitize_memory:
1019 B.addAttribute(Attribute::SanitizeMemory); break;
1020 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1023 case lltok::kw_inreg:
1024 case lltok::kw_signext:
1025 case lltok::kw_zeroext:
1028 "invalid use of attribute on a function");
1030 case lltok::kw_byval:
1031 case lltok::kw_dereferenceable:
1032 case lltok::kw_dereferenceable_or_null:
1033 case lltok::kw_inalloca:
1034 case lltok::kw_nest:
1035 case lltok::kw_noalias:
1036 case lltok::kw_nocapture:
1037 case lltok::kw_nonnull:
1038 case lltok::kw_returned:
1039 case lltok::kw_sret:
1042 "invalid use of parameter-only attribute on a function");
1050 //===----------------------------------------------------------------------===//
1051 // GlobalValue Reference/Resolution Routines.
1052 //===----------------------------------------------------------------------===//
1054 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1055 const std::string &Name) {
1056 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1057 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1059 return new GlobalVariable(*M, PTy->getElementType(), false,
1060 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1061 nullptr, GlobalVariable::NotThreadLocal,
1062 PTy->getAddressSpace());
1065 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1066 /// forward reference record if needed. This can return null if the value
1067 /// exists but does not have the right type.
1068 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1070 PointerType *PTy = dyn_cast<PointerType>(Ty);
1072 Error(Loc, "global variable reference must have pointer type");
1076 // Look this name up in the normal function symbol table.
1078 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1080 // If this is a forward reference for the value, see if we already created a
1081 // forward ref record.
1083 auto I = ForwardRefVals.find(Name);
1084 if (I != ForwardRefVals.end())
1085 Val = I->second.first;
1088 // If we have the value in the symbol table or fwd-ref table, return it.
1090 if (Val->getType() == Ty) return Val;
1091 Error(Loc, "'@" + Name + "' defined with type '" +
1092 getTypeString(Val->getType()) + "'");
1096 // Otherwise, create a new forward reference for this value and remember it.
1097 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1098 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1102 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1103 PointerType *PTy = dyn_cast<PointerType>(Ty);
1105 Error(Loc, "global variable reference must have pointer type");
1109 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1111 // If this is a forward reference for the value, see if we already created a
1112 // forward ref record.
1114 auto I = ForwardRefValIDs.find(ID);
1115 if (I != ForwardRefValIDs.end())
1116 Val = I->second.first;
1119 // If we have the value in the symbol table or fwd-ref table, return it.
1121 if (Val->getType() == Ty) return Val;
1122 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1123 getTypeString(Val->getType()) + "'");
1127 // Otherwise, create a new forward reference for this value and remember it.
1128 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1129 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1134 //===----------------------------------------------------------------------===//
1135 // Comdat Reference/Resolution Routines.
1136 //===----------------------------------------------------------------------===//
1138 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1139 // Look this name up in the comdat symbol table.
1140 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1141 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1142 if (I != ComdatSymTab.end())
1145 // Otherwise, create a new forward reference for this value and remember it.
1146 Comdat *C = M->getOrInsertComdat(Name);
1147 ForwardRefComdats[Name] = Loc;
1152 //===----------------------------------------------------------------------===//
1154 //===----------------------------------------------------------------------===//
1156 /// ParseToken - If the current token has the specified kind, eat it and return
1157 /// success. Otherwise, emit the specified error and return failure.
1158 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1159 if (Lex.getKind() != T)
1160 return TokError(ErrMsg);
1165 /// ParseStringConstant
1166 /// ::= StringConstant
1167 bool LLParser::ParseStringConstant(std::string &Result) {
1168 if (Lex.getKind() != lltok::StringConstant)
1169 return TokError("expected string constant");
1170 Result = Lex.getStrVal();
1177 bool LLParser::ParseUInt32(unsigned &Val) {
1178 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1179 return TokError("expected integer");
1180 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1181 if (Val64 != unsigned(Val64))
1182 return TokError("expected 32-bit integer (too large)");
1190 bool LLParser::ParseUInt64(uint64_t &Val) {
1191 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1192 return TokError("expected integer");
1193 Val = Lex.getAPSIntVal().getLimitedValue();
1199 /// := 'localdynamic'
1200 /// := 'initialexec'
1202 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1203 switch (Lex.getKind()) {
1205 return TokError("expected localdynamic, initialexec or localexec");
1206 case lltok::kw_localdynamic:
1207 TLM = GlobalVariable::LocalDynamicTLSModel;
1209 case lltok::kw_initialexec:
1210 TLM = GlobalVariable::InitialExecTLSModel;
1212 case lltok::kw_localexec:
1213 TLM = GlobalVariable::LocalExecTLSModel;
1221 /// ParseOptionalThreadLocal
1223 /// := 'thread_local'
1224 /// := 'thread_local' '(' tlsmodel ')'
1225 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1226 TLM = GlobalVariable::NotThreadLocal;
1227 if (!EatIfPresent(lltok::kw_thread_local))
1230 TLM = GlobalVariable::GeneralDynamicTLSModel;
1231 if (Lex.getKind() == lltok::lparen) {
1233 return ParseTLSModel(TLM) ||
1234 ParseToken(lltok::rparen, "expected ')' after thread local model");
1239 /// ParseOptionalAddrSpace
1241 /// := 'addrspace' '(' uint32 ')'
1242 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1244 if (!EatIfPresent(lltok::kw_addrspace))
1246 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1247 ParseUInt32(AddrSpace) ||
1248 ParseToken(lltok::rparen, "expected ')' in address space");
1251 /// ParseStringAttribute
1252 /// := StringConstant
1253 /// := StringConstant '=' StringConstant
1254 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1255 std::string Attr = Lex.getStrVal();
1258 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1260 B.addAttribute(Attr, Val);
1264 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1265 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1266 bool HaveError = false;
1271 lltok::Kind Token = Lex.getKind();
1273 default: // End of attributes.
1275 case lltok::StringConstant: {
1276 if (ParseStringAttribute(B))
1280 case lltok::kw_align: {
1282 if (ParseOptionalAlignment(Alignment))
1284 B.addAlignmentAttr(Alignment);
1287 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1288 case lltok::kw_dereferenceable: {
1290 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1292 B.addDereferenceableAttr(Bytes);
1295 case lltok::kw_dereferenceable_or_null: {
1297 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1299 B.addDereferenceableOrNullAttr(Bytes);
1302 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1303 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1304 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1305 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1306 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1307 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1308 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1309 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1310 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1311 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1312 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1313 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1315 case lltok::kw_alignstack:
1316 case lltok::kw_alwaysinline:
1317 case lltok::kw_argmemonly:
1318 case lltok::kw_builtin:
1319 case lltok::kw_inlinehint:
1320 case lltok::kw_jumptable:
1321 case lltok::kw_minsize:
1322 case lltok::kw_naked:
1323 case lltok::kw_nobuiltin:
1324 case lltok::kw_noduplicate:
1325 case lltok::kw_noimplicitfloat:
1326 case lltok::kw_noinline:
1327 case lltok::kw_nonlazybind:
1328 case lltok::kw_noredzone:
1329 case lltok::kw_noreturn:
1330 case lltok::kw_nounwind:
1331 case lltok::kw_optnone:
1332 case lltok::kw_optsize:
1333 case lltok::kw_returns_twice:
1334 case lltok::kw_sanitize_address:
1335 case lltok::kw_sanitize_memory:
1336 case lltok::kw_sanitize_thread:
1338 case lltok::kw_sspreq:
1339 case lltok::kw_sspstrong:
1340 case lltok::kw_safestack:
1341 case lltok::kw_uwtable:
1342 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1350 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1351 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1352 bool HaveError = false;
1357 lltok::Kind Token = Lex.getKind();
1359 default: // End of attributes.
1361 case lltok::StringConstant: {
1362 if (ParseStringAttribute(B))
1366 case lltok::kw_dereferenceable: {
1368 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1370 B.addDereferenceableAttr(Bytes);
1373 case lltok::kw_dereferenceable_or_null: {
1375 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1377 B.addDereferenceableOrNullAttr(Bytes);
1380 case lltok::kw_align: {
1382 if (ParseOptionalAlignment(Alignment))
1384 B.addAlignmentAttr(Alignment);
1387 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1388 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1389 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1390 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1391 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1394 case lltok::kw_byval:
1395 case lltok::kw_inalloca:
1396 case lltok::kw_nest:
1397 case lltok::kw_nocapture:
1398 case lltok::kw_returned:
1399 case lltok::kw_sret:
1400 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1403 case lltok::kw_alignstack:
1404 case lltok::kw_alwaysinline:
1405 case lltok::kw_argmemonly:
1406 case lltok::kw_builtin:
1407 case lltok::kw_cold:
1408 case lltok::kw_inlinehint:
1409 case lltok::kw_jumptable:
1410 case lltok::kw_minsize:
1411 case lltok::kw_naked:
1412 case lltok::kw_nobuiltin:
1413 case lltok::kw_noduplicate:
1414 case lltok::kw_noimplicitfloat:
1415 case lltok::kw_noinline:
1416 case lltok::kw_nonlazybind:
1417 case lltok::kw_noredzone:
1418 case lltok::kw_noreturn:
1419 case lltok::kw_nounwind:
1420 case lltok::kw_optnone:
1421 case lltok::kw_optsize:
1422 case lltok::kw_returns_twice:
1423 case lltok::kw_sanitize_address:
1424 case lltok::kw_sanitize_memory:
1425 case lltok::kw_sanitize_thread:
1427 case lltok::kw_sspreq:
1428 case lltok::kw_sspstrong:
1429 case lltok::kw_safestack:
1430 case lltok::kw_uwtable:
1431 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1434 case lltok::kw_readnone:
1435 case lltok::kw_readonly:
1436 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1443 /// ParseOptionalLinkage
1450 /// ::= 'linkonce_odr'
1451 /// ::= 'available_externally'
1454 /// ::= 'extern_weak'
1456 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1458 switch (Lex.getKind()) {
1459 default: Res=GlobalValue::ExternalLinkage; return false;
1460 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1461 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1462 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1463 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1464 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1465 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1466 case lltok::kw_available_externally:
1467 Res = GlobalValue::AvailableExternallyLinkage;
1469 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1470 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1471 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1472 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1479 /// ParseOptionalVisibility
1485 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1486 switch (Lex.getKind()) {
1487 default: Res = GlobalValue::DefaultVisibility; return false;
1488 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1489 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1490 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1496 /// ParseOptionalDLLStorageClass
1501 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1502 switch (Lex.getKind()) {
1503 default: Res = GlobalValue::DefaultStorageClass; return false;
1504 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1505 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1511 /// ParseOptionalCallingConv
1515 /// ::= 'intel_ocl_bicc'
1517 /// ::= 'x86_stdcallcc'
1518 /// ::= 'x86_fastcallcc'
1519 /// ::= 'x86_thiscallcc'
1520 /// ::= 'x86_vectorcallcc'
1521 /// ::= 'arm_apcscc'
1522 /// ::= 'arm_aapcscc'
1523 /// ::= 'arm_aapcs_vfpcc'
1524 /// ::= 'msp430_intrcc'
1525 /// ::= 'ptx_kernel'
1526 /// ::= 'ptx_device'
1528 /// ::= 'spir_kernel'
1529 /// ::= 'x86_64_sysvcc'
1530 /// ::= 'x86_64_win64cc'
1531 /// ::= 'webkit_jscc'
1533 /// ::= 'preserve_mostcc'
1534 /// ::= 'preserve_allcc'
1540 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1541 switch (Lex.getKind()) {
1542 default: CC = CallingConv::C; return false;
1543 case lltok::kw_ccc: CC = CallingConv::C; break;
1544 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1545 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1546 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1547 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1548 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1549 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1550 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1551 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1552 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1553 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1554 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1555 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1556 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1557 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1558 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1559 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1560 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1561 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1562 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1563 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1564 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1565 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1566 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1567 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1568 case lltok::kw_cc: {
1570 return ParseUInt32(CC);
1578 /// ParseMetadataAttachment
1580 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1581 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1583 std::string Name = Lex.getStrVal();
1584 Kind = M->getMDKindID(Name);
1587 return ParseMDNode(MD);
1590 /// ParseInstructionMetadata
1591 /// ::= !dbg !42 (',' !dbg !57)*
1592 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1594 if (Lex.getKind() != lltok::MetadataVar)
1595 return TokError("expected metadata after comma");
1599 if (ParseMetadataAttachment(MDK, N))
1602 Inst.setMetadata(MDK, N);
1603 if (MDK == LLVMContext::MD_tbaa)
1604 InstsWithTBAATag.push_back(&Inst);
1606 // If this is the end of the list, we're done.
1607 } while (EatIfPresent(lltok::comma));
1611 /// ParseOptionalFunctionMetadata
1613 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1614 while (Lex.getKind() == lltok::MetadataVar) {
1617 if (ParseMetadataAttachment(MDK, N))
1620 F.setMetadata(MDK, N);
1625 /// ParseOptionalAlignment
1628 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1630 if (!EatIfPresent(lltok::kw_align))
1632 LocTy AlignLoc = Lex.getLoc();
1633 if (ParseUInt32(Alignment)) return true;
1634 if (!isPowerOf2_32(Alignment))
1635 return Error(AlignLoc, "alignment is not a power of two");
1636 if (Alignment > Value::MaximumAlignment)
1637 return Error(AlignLoc, "huge alignments are not supported yet");
1641 /// ParseOptionalDerefAttrBytes
1643 /// ::= AttrKind '(' 4 ')'
1645 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1646 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1648 assert((AttrKind == lltok::kw_dereferenceable ||
1649 AttrKind == lltok::kw_dereferenceable_or_null) &&
1653 if (!EatIfPresent(AttrKind))
1655 LocTy ParenLoc = Lex.getLoc();
1656 if (!EatIfPresent(lltok::lparen))
1657 return Error(ParenLoc, "expected '('");
1658 LocTy DerefLoc = Lex.getLoc();
1659 if (ParseUInt64(Bytes)) return true;
1660 ParenLoc = Lex.getLoc();
1661 if (!EatIfPresent(lltok::rparen))
1662 return Error(ParenLoc, "expected ')'");
1664 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1668 /// ParseOptionalCommaAlign
1672 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1674 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1675 bool &AteExtraComma) {
1676 AteExtraComma = false;
1677 while (EatIfPresent(lltok::comma)) {
1678 // Metadata at the end is an early exit.
1679 if (Lex.getKind() == lltok::MetadataVar) {
1680 AteExtraComma = true;
1684 if (Lex.getKind() != lltok::kw_align)
1685 return Error(Lex.getLoc(), "expected metadata or 'align'");
1687 if (ParseOptionalAlignment(Alignment)) return true;
1693 /// ParseScopeAndOrdering
1694 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1697 /// This sets Scope and Ordering to the parsed values.
1698 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1699 AtomicOrdering &Ordering) {
1703 Scope = CrossThread;
1704 if (EatIfPresent(lltok::kw_singlethread))
1705 Scope = SingleThread;
1707 return ParseOrdering(Ordering);
1711 /// ::= AtomicOrdering
1713 /// This sets Ordering to the parsed value.
1714 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1715 switch (Lex.getKind()) {
1716 default: return TokError("Expected ordering on atomic instruction");
1717 case lltok::kw_unordered: Ordering = Unordered; break;
1718 case lltok::kw_monotonic: Ordering = Monotonic; break;
1719 case lltok::kw_acquire: Ordering = Acquire; break;
1720 case lltok::kw_release: Ordering = Release; break;
1721 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1722 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1728 /// ParseOptionalStackAlignment
1730 /// ::= 'alignstack' '(' 4 ')'
1731 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1733 if (!EatIfPresent(lltok::kw_alignstack))
1735 LocTy ParenLoc = Lex.getLoc();
1736 if (!EatIfPresent(lltok::lparen))
1737 return Error(ParenLoc, "expected '('");
1738 LocTy AlignLoc = Lex.getLoc();
1739 if (ParseUInt32(Alignment)) return true;
1740 ParenLoc = Lex.getLoc();
1741 if (!EatIfPresent(lltok::rparen))
1742 return Error(ParenLoc, "expected ')'");
1743 if (!isPowerOf2_32(Alignment))
1744 return Error(AlignLoc, "stack alignment is not a power of two");
1748 /// ParseIndexList - This parses the index list for an insert/extractvalue
1749 /// instruction. This sets AteExtraComma in the case where we eat an extra
1750 /// comma at the end of the line and find that it is followed by metadata.
1751 /// Clients that don't allow metadata can call the version of this function that
1752 /// only takes one argument.
1755 /// ::= (',' uint32)+
1757 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1758 bool &AteExtraComma) {
1759 AteExtraComma = false;
1761 if (Lex.getKind() != lltok::comma)
1762 return TokError("expected ',' as start of index list");
1764 while (EatIfPresent(lltok::comma)) {
1765 if (Lex.getKind() == lltok::MetadataVar) {
1766 if (Indices.empty()) return TokError("expected index");
1767 AteExtraComma = true;
1771 if (ParseUInt32(Idx)) return true;
1772 Indices.push_back(Idx);
1778 //===----------------------------------------------------------------------===//
1780 //===----------------------------------------------------------------------===//
1782 /// ParseType - Parse a type.
1783 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1784 SMLoc TypeLoc = Lex.getLoc();
1785 switch (Lex.getKind()) {
1787 return TokError(Msg);
1789 // Type ::= 'float' | 'void' (etc)
1790 Result = Lex.getTyVal();
1794 // Type ::= StructType
1795 if (ParseAnonStructType(Result, false))
1798 case lltok::lsquare:
1799 // Type ::= '[' ... ']'
1800 Lex.Lex(); // eat the lsquare.
1801 if (ParseArrayVectorType(Result, false))
1804 case lltok::less: // Either vector or packed struct.
1805 // Type ::= '<' ... '>'
1807 if (Lex.getKind() == lltok::lbrace) {
1808 if (ParseAnonStructType(Result, true) ||
1809 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1811 } else if (ParseArrayVectorType(Result, true))
1814 case lltok::LocalVar: {
1816 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1818 // If the type hasn't been defined yet, create a forward definition and
1819 // remember where that forward def'n was seen (in case it never is defined).
1821 Entry.first = StructType::create(Context, Lex.getStrVal());
1822 Entry.second = Lex.getLoc();
1824 Result = Entry.first;
1829 case lltok::LocalVarID: {
1831 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1833 // If the type hasn't been defined yet, create a forward definition and
1834 // remember where that forward def'n was seen (in case it never is defined).
1836 Entry.first = StructType::create(Context);
1837 Entry.second = Lex.getLoc();
1839 Result = Entry.first;
1845 // Parse the type suffixes.
1847 switch (Lex.getKind()) {
1850 if (!AllowVoid && Result->isVoidTy())
1851 return Error(TypeLoc, "void type only allowed for function results");
1854 // Type ::= Type '*'
1856 if (Result->isLabelTy())
1857 return TokError("basic block pointers are invalid");
1858 if (Result->isVoidTy())
1859 return TokError("pointers to void are invalid - use i8* instead");
1860 if (!PointerType::isValidElementType(Result))
1861 return TokError("pointer to this type is invalid");
1862 Result = PointerType::getUnqual(Result);
1866 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1867 case lltok::kw_addrspace: {
1868 if (Result->isLabelTy())
1869 return TokError("basic block pointers are invalid");
1870 if (Result->isVoidTy())
1871 return TokError("pointers to void are invalid; use i8* instead");
1872 if (!PointerType::isValidElementType(Result))
1873 return TokError("pointer to this type is invalid");
1875 if (ParseOptionalAddrSpace(AddrSpace) ||
1876 ParseToken(lltok::star, "expected '*' in address space"))
1879 Result = PointerType::get(Result, AddrSpace);
1883 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1885 if (ParseFunctionType(Result))
1892 /// ParseParameterList
1894 /// ::= '(' Arg (',' Arg)* ')'
1896 /// ::= Type OptionalAttributes Value OptionalAttributes
1897 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1898 PerFunctionState &PFS, bool IsMustTailCall,
1899 bool InVarArgsFunc) {
1900 if (ParseToken(lltok::lparen, "expected '(' in call"))
1903 unsigned AttrIndex = 1;
1904 while (Lex.getKind() != lltok::rparen) {
1905 // If this isn't the first argument, we need a comma.
1906 if (!ArgList.empty() &&
1907 ParseToken(lltok::comma, "expected ',' in argument list"))
1910 // Parse an ellipsis if this is a musttail call in a variadic function.
1911 if (Lex.getKind() == lltok::dotdotdot) {
1912 const char *Msg = "unexpected ellipsis in argument list for ";
1913 if (!IsMustTailCall)
1914 return TokError(Twine(Msg) + "non-musttail call");
1916 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1917 Lex.Lex(); // Lex the '...', it is purely for readability.
1918 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1921 // Parse the argument.
1923 Type *ArgTy = nullptr;
1924 AttrBuilder ArgAttrs;
1926 if (ParseType(ArgTy, ArgLoc))
1929 if (ArgTy->isMetadataTy()) {
1930 if (ParseMetadataAsValue(V, PFS))
1933 // Otherwise, handle normal operands.
1934 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1937 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1942 if (IsMustTailCall && InVarArgsFunc)
1943 return TokError("expected '...' at end of argument list for musttail call "
1944 "in varargs function");
1946 Lex.Lex(); // Lex the ')'.
1950 /// ParseOptionalOperandBundles
1952 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
1955 /// ::= bundle-tag '(' ')'
1956 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
1958 /// bundle-tag ::= String Constant
1959 bool LLParser::ParseOptionalOperandBundles(
1960 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
1961 LocTy BeginLoc = Lex.getLoc();
1962 if (!EatIfPresent(lltok::lsquare))
1965 while (Lex.getKind() != lltok::rsquare) {
1966 // If this isn't the first operand bundle, we need a comma.
1967 if (!BundleList.empty() &&
1968 ParseToken(lltok::comma, "expected ',' in input list"))
1972 if (ParseStringConstant(Tag))
1975 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1978 std::vector<Value *> Inputs;
1979 while (Lex.getKind() != lltok::rparen) {
1980 // If this isn't the first input, we need a comma.
1981 if (!Inputs.empty() &&
1982 ParseToken(lltok::comma, "expected ',' in input list"))
1986 Value *Input = nullptr;
1987 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
1989 Inputs.push_back(Input);
1992 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
1994 Lex.Lex(); // Lex the ')'.
1997 if (BundleList.empty())
1998 return Error(BeginLoc, "operand bundle set must not be empty");
2000 Lex.Lex(); // Lex the ']'.
2004 /// ParseArgumentList - Parse the argument list for a function type or function
2006 /// ::= '(' ArgTypeListI ')'
2010 /// ::= ArgTypeList ',' '...'
2011 /// ::= ArgType (',' ArgType)*
2013 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2016 assert(Lex.getKind() == lltok::lparen);
2017 Lex.Lex(); // eat the (.
2019 if (Lex.getKind() == lltok::rparen) {
2021 } else if (Lex.getKind() == lltok::dotdotdot) {
2025 LocTy TypeLoc = Lex.getLoc();
2026 Type *ArgTy = nullptr;
2030 if (ParseType(ArgTy) ||
2031 ParseOptionalParamAttrs(Attrs)) return true;
2033 if (ArgTy->isVoidTy())
2034 return Error(TypeLoc, "argument can not have void type");
2036 if (Lex.getKind() == lltok::LocalVar) {
2037 Name = Lex.getStrVal();
2041 if (!FunctionType::isValidArgumentType(ArgTy))
2042 return Error(TypeLoc, "invalid type for function argument");
2044 unsigned AttrIndex = 1;
2045 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2046 AttrIndex++, Attrs),
2049 while (EatIfPresent(lltok::comma)) {
2050 // Handle ... at end of arg list.
2051 if (EatIfPresent(lltok::dotdotdot)) {
2056 // Otherwise must be an argument type.
2057 TypeLoc = Lex.getLoc();
2058 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2060 if (ArgTy->isVoidTy())
2061 return Error(TypeLoc, "argument can not have void type");
2063 if (Lex.getKind() == lltok::LocalVar) {
2064 Name = Lex.getStrVal();
2070 if (!ArgTy->isFirstClassType())
2071 return Error(TypeLoc, "invalid type for function argument");
2073 ArgList.emplace_back(
2075 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2080 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2083 /// ParseFunctionType
2084 /// ::= Type ArgumentList OptionalAttrs
2085 bool LLParser::ParseFunctionType(Type *&Result) {
2086 assert(Lex.getKind() == lltok::lparen);
2088 if (!FunctionType::isValidReturnType(Result))
2089 return TokError("invalid function return type");
2091 SmallVector<ArgInfo, 8> ArgList;
2093 if (ParseArgumentList(ArgList, isVarArg))
2096 // Reject names on the arguments lists.
2097 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2098 if (!ArgList[i].Name.empty())
2099 return Error(ArgList[i].Loc, "argument name invalid in function type");
2100 if (ArgList[i].Attrs.hasAttributes(i + 1))
2101 return Error(ArgList[i].Loc,
2102 "argument attributes invalid in function type");
2105 SmallVector<Type*, 16> ArgListTy;
2106 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2107 ArgListTy.push_back(ArgList[i].Ty);
2109 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2113 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2115 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2116 SmallVector<Type*, 8> Elts;
2117 if (ParseStructBody(Elts)) return true;
2119 Result = StructType::get(Context, Elts, Packed);
2123 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2124 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2125 std::pair<Type*, LocTy> &Entry,
2127 // If the type was already defined, diagnose the redefinition.
2128 if (Entry.first && !Entry.second.isValid())
2129 return Error(TypeLoc, "redefinition of type");
2131 // If we have opaque, just return without filling in the definition for the
2132 // struct. This counts as a definition as far as the .ll file goes.
2133 if (EatIfPresent(lltok::kw_opaque)) {
2134 // This type is being defined, so clear the location to indicate this.
2135 Entry.second = SMLoc();
2137 // If this type number has never been uttered, create it.
2139 Entry.first = StructType::create(Context, Name);
2140 ResultTy = Entry.first;
2144 // If the type starts with '<', then it is either a packed struct or a vector.
2145 bool isPacked = EatIfPresent(lltok::less);
2147 // If we don't have a struct, then we have a random type alias, which we
2148 // accept for compatibility with old files. These types are not allowed to be
2149 // forward referenced and not allowed to be recursive.
2150 if (Lex.getKind() != lltok::lbrace) {
2152 return Error(TypeLoc, "forward references to non-struct type");
2156 return ParseArrayVectorType(ResultTy, true);
2157 return ParseType(ResultTy);
2160 // This type is being defined, so clear the location to indicate this.
2161 Entry.second = SMLoc();
2163 // If this type number has never been uttered, create it.
2165 Entry.first = StructType::create(Context, Name);
2167 StructType *STy = cast<StructType>(Entry.first);
2169 SmallVector<Type*, 8> Body;
2170 if (ParseStructBody(Body) ||
2171 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2174 STy->setBody(Body, isPacked);
2180 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2183 /// ::= '{' Type (',' Type)* '}'
2184 /// ::= '<' '{' '}' '>'
2185 /// ::= '<' '{' Type (',' Type)* '}' '>'
2186 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2187 assert(Lex.getKind() == lltok::lbrace);
2188 Lex.Lex(); // Consume the '{'
2190 // Handle the empty struct.
2191 if (EatIfPresent(lltok::rbrace))
2194 LocTy EltTyLoc = Lex.getLoc();
2196 if (ParseType(Ty)) return true;
2199 if (!StructType::isValidElementType(Ty))
2200 return Error(EltTyLoc, "invalid element type for struct");
2202 while (EatIfPresent(lltok::comma)) {
2203 EltTyLoc = Lex.getLoc();
2204 if (ParseType(Ty)) return true;
2206 if (!StructType::isValidElementType(Ty))
2207 return Error(EltTyLoc, "invalid element type for struct");
2212 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2215 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2216 /// token has already been consumed.
2218 /// ::= '[' APSINTVAL 'x' Types ']'
2219 /// ::= '<' APSINTVAL 'x' Types '>'
2220 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2221 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2222 Lex.getAPSIntVal().getBitWidth() > 64)
2223 return TokError("expected number in address space");
2225 LocTy SizeLoc = Lex.getLoc();
2226 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2229 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2232 LocTy TypeLoc = Lex.getLoc();
2233 Type *EltTy = nullptr;
2234 if (ParseType(EltTy)) return true;
2236 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2237 "expected end of sequential type"))
2242 return Error(SizeLoc, "zero element vector is illegal");
2243 if ((unsigned)Size != Size)
2244 return Error(SizeLoc, "size too large for vector");
2245 if (!VectorType::isValidElementType(EltTy))
2246 return Error(TypeLoc, "invalid vector element type");
2247 Result = VectorType::get(EltTy, unsigned(Size));
2249 if (!ArrayType::isValidElementType(EltTy))
2250 return Error(TypeLoc, "invalid array element type");
2251 Result = ArrayType::get(EltTy, Size);
2256 //===----------------------------------------------------------------------===//
2257 // Function Semantic Analysis.
2258 //===----------------------------------------------------------------------===//
2260 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2262 : P(p), F(f), FunctionNumber(functionNumber) {
2264 // Insert unnamed arguments into the NumberedVals list.
2265 for (Argument &A : F.args())
2267 NumberedVals.push_back(&A);
2270 LLParser::PerFunctionState::~PerFunctionState() {
2271 // If there were any forward referenced non-basicblock values, delete them.
2273 for (const auto &P : ForwardRefVals) {
2274 if (isa<BasicBlock>(P.second.first))
2276 P.second.first->replaceAllUsesWith(
2277 UndefValue::get(P.second.first->getType()));
2278 delete P.second.first;
2281 for (const auto &P : ForwardRefValIDs) {
2282 if (isa<BasicBlock>(P.second.first))
2284 P.second.first->replaceAllUsesWith(
2285 UndefValue::get(P.second.first->getType()));
2286 delete P.second.first;
2290 bool LLParser::PerFunctionState::FinishFunction() {
2291 if (!ForwardRefVals.empty())
2292 return P.Error(ForwardRefVals.begin()->second.second,
2293 "use of undefined value '%" + ForwardRefVals.begin()->first +
2295 if (!ForwardRefValIDs.empty())
2296 return P.Error(ForwardRefValIDs.begin()->second.second,
2297 "use of undefined value '%" +
2298 Twine(ForwardRefValIDs.begin()->first) + "'");
2303 /// GetVal - Get a value with the specified name or ID, creating a
2304 /// forward reference record if needed. This can return null if the value
2305 /// exists but does not have the right type.
2306 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2307 LocTy Loc, OperatorConstraint OC) {
2308 // Look this name up in the normal function symbol table.
2309 Value *Val = F.getValueSymbolTable().lookup(Name);
2311 // If this is a forward reference for the value, see if we already created a
2312 // forward ref record.
2314 auto I = ForwardRefVals.find(Name);
2315 if (I != ForwardRefVals.end())
2316 Val = I->second.first;
2319 // If we have the value in the symbol table or fwd-ref table, return it.
2321 // Check operator constraints.
2327 if (!isa<CatchPadInst>(Val)) {
2328 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2333 if (!isa<CleanupPadInst>(Val)) {
2334 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2339 if (Val->getType() == Ty) return Val;
2340 if (Ty->isLabelTy())
2341 P.Error(Loc, "'%" + Name + "' is not a basic block");
2343 P.Error(Loc, "'%" + Name + "' defined with type '" +
2344 getTypeString(Val->getType()) + "'");
2348 // Don't make placeholders with invalid type.
2349 if (!Ty->isFirstClassType()) {
2350 P.Error(Loc, "invalid use of a non-first-class type");
2354 // Otherwise, create a new forward reference for this value and remember it.
2356 if (Ty->isLabelTy()) {
2358 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2360 FwdVal = new Argument(Ty, Name);
2364 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2368 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2371 llvm_unreachable("unexpected constraint");
2375 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2379 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2380 OperatorConstraint OC) {
2381 // Look this name up in the normal function symbol table.
2382 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2384 // If this is a forward reference for the value, see if we already created a
2385 // forward ref record.
2387 auto I = ForwardRefValIDs.find(ID);
2388 if (I != ForwardRefValIDs.end())
2389 Val = I->second.first;
2392 // If we have the value in the symbol table or fwd-ref table, return it.
2394 // Check operator constraint.
2400 if (!isa<CatchPadInst>(Val)) {
2401 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2406 if (!isa<CleanupPadInst>(Val)) {
2407 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2412 if (Val->getType() == Ty) return Val;
2413 if (Ty->isLabelTy())
2414 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2416 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2417 getTypeString(Val->getType()) + "'");
2421 if (!Ty->isFirstClassType()) {
2422 P.Error(Loc, "invalid use of a non-first-class type");
2426 // Otherwise, create a new forward reference for this value and remember it.
2428 if (Ty->isLabelTy()) {
2430 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2432 FwdVal = new Argument(Ty);
2436 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2439 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2442 llvm_unreachable("unexpected constraint");
2446 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2450 /// SetInstName - After an instruction is parsed and inserted into its
2451 /// basic block, this installs its name.
2452 bool LLParser::PerFunctionState::SetInstName(int NameID,
2453 const std::string &NameStr,
2454 LocTy NameLoc, Instruction *Inst) {
2455 // If this instruction has void type, it cannot have a name or ID specified.
2456 if (Inst->getType()->isVoidTy()) {
2457 if (NameID != -1 || !NameStr.empty())
2458 return P.Error(NameLoc, "instructions returning void cannot have a name");
2462 // If this was a numbered instruction, verify that the instruction is the
2463 // expected value and resolve any forward references.
2464 if (NameStr.empty()) {
2465 // If neither a name nor an ID was specified, just use the next ID.
2467 NameID = NumberedVals.size();
2469 if (unsigned(NameID) != NumberedVals.size())
2470 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2471 Twine(NumberedVals.size()) + "'");
2473 auto FI = ForwardRefValIDs.find(NameID);
2474 if (FI != ForwardRefValIDs.end()) {
2475 Value *Sentinel = FI->second.first;
2476 if (Sentinel->getType() != Inst->getType())
2477 return P.Error(NameLoc, "instruction forward referenced with type '" +
2478 getTypeString(FI->second.first->getType()) + "'");
2479 // Check operator constraints. We only put cleanuppads or catchpads in
2480 // the forward value map if the value is constrained to match.
2481 if (isa<CatchPadInst>(Sentinel)) {
2482 if (!isa<CatchPadInst>(Inst))
2483 return P.Error(FI->second.second,
2484 "'%" + Twine(NameID) + "' is not a catchpad");
2485 } else if (isa<CleanupPadInst>(Sentinel)) {
2486 if (!isa<CleanupPadInst>(Inst))
2487 return P.Error(FI->second.second,
2488 "'%" + Twine(NameID) + "' is not a cleanuppad");
2491 Sentinel->replaceAllUsesWith(Inst);
2493 ForwardRefValIDs.erase(FI);
2496 NumberedVals.push_back(Inst);
2500 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2501 auto FI = ForwardRefVals.find(NameStr);
2502 if (FI != ForwardRefVals.end()) {
2503 Value *Sentinel = FI->second.first;
2504 if (Sentinel->getType() != Inst->getType())
2505 return P.Error(NameLoc, "instruction forward referenced with type '" +
2506 getTypeString(FI->second.first->getType()) + "'");
2507 // Check operator constraints. We only put cleanuppads or catchpads in
2508 // the forward value map if the value is constrained to match.
2509 if (isa<CatchPadInst>(Sentinel)) {
2510 if (!isa<CatchPadInst>(Inst))
2511 return P.Error(FI->second.second,
2512 "'%" + NameStr + "' is not a catchpad");
2513 } else if (isa<CleanupPadInst>(Sentinel)) {
2514 if (!isa<CleanupPadInst>(Inst))
2515 return P.Error(FI->second.second,
2516 "'%" + NameStr + "' is not a cleanuppad");
2519 Sentinel->replaceAllUsesWith(Inst);
2521 ForwardRefVals.erase(FI);
2524 // Set the name on the instruction.
2525 Inst->setName(NameStr);
2527 if (Inst->getName() != NameStr)
2528 return P.Error(NameLoc, "multiple definition of local value named '" +
2533 /// GetBB - Get a basic block with the specified name or ID, creating a
2534 /// forward reference record if needed.
2535 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2537 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2538 Type::getLabelTy(F.getContext()), Loc));
2541 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2542 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2543 Type::getLabelTy(F.getContext()), Loc));
2546 /// DefineBB - Define the specified basic block, which is either named or
2547 /// unnamed. If there is an error, this returns null otherwise it returns
2548 /// the block being defined.
2549 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2553 BB = GetBB(NumberedVals.size(), Loc);
2555 BB = GetBB(Name, Loc);
2556 if (!BB) return nullptr; // Already diagnosed error.
2558 // Move the block to the end of the function. Forward ref'd blocks are
2559 // inserted wherever they happen to be referenced.
2560 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2562 // Remove the block from forward ref sets.
2564 ForwardRefValIDs.erase(NumberedVals.size());
2565 NumberedVals.push_back(BB);
2567 // BB forward references are already in the function symbol table.
2568 ForwardRefVals.erase(Name);
2574 //===----------------------------------------------------------------------===//
2576 //===----------------------------------------------------------------------===//
2578 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2579 /// type implied. For example, if we parse "4" we don't know what integer type
2580 /// it has. The value will later be combined with its type and checked for
2581 /// sanity. PFS is used to convert function-local operands of metadata (since
2582 /// metadata operands are not just parsed here but also converted to values).
2583 /// PFS can be null when we are not parsing metadata values inside a function.
2584 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2585 ID.Loc = Lex.getLoc();
2586 switch (Lex.getKind()) {
2587 default: return TokError("expected value token");
2588 case lltok::GlobalID: // @42
2589 ID.UIntVal = Lex.getUIntVal();
2590 ID.Kind = ValID::t_GlobalID;
2592 case lltok::GlobalVar: // @foo
2593 ID.StrVal = Lex.getStrVal();
2594 ID.Kind = ValID::t_GlobalName;
2596 case lltok::LocalVarID: // %42
2597 ID.UIntVal = Lex.getUIntVal();
2598 ID.Kind = ValID::t_LocalID;
2600 case lltok::LocalVar: // %foo
2601 ID.StrVal = Lex.getStrVal();
2602 ID.Kind = ValID::t_LocalName;
2605 ID.APSIntVal = Lex.getAPSIntVal();
2606 ID.Kind = ValID::t_APSInt;
2608 case lltok::APFloat:
2609 ID.APFloatVal = Lex.getAPFloatVal();
2610 ID.Kind = ValID::t_APFloat;
2612 case lltok::kw_true:
2613 ID.ConstantVal = ConstantInt::getTrue(Context);
2614 ID.Kind = ValID::t_Constant;
2616 case lltok::kw_false:
2617 ID.ConstantVal = ConstantInt::getFalse(Context);
2618 ID.Kind = ValID::t_Constant;
2620 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2621 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2622 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2623 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2625 case lltok::lbrace: {
2626 // ValID ::= '{' ConstVector '}'
2628 SmallVector<Constant*, 16> Elts;
2629 if (ParseGlobalValueVector(Elts) ||
2630 ParseToken(lltok::rbrace, "expected end of struct constant"))
2633 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2634 ID.UIntVal = Elts.size();
2635 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2636 Elts.size() * sizeof(Elts[0]));
2637 ID.Kind = ValID::t_ConstantStruct;
2641 // ValID ::= '<' ConstVector '>' --> Vector.
2642 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2644 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2646 SmallVector<Constant*, 16> Elts;
2647 LocTy FirstEltLoc = Lex.getLoc();
2648 if (ParseGlobalValueVector(Elts) ||
2650 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2651 ParseToken(lltok::greater, "expected end of constant"))
2654 if (isPackedStruct) {
2655 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2656 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2657 Elts.size() * sizeof(Elts[0]));
2658 ID.UIntVal = Elts.size();
2659 ID.Kind = ValID::t_PackedConstantStruct;
2664 return Error(ID.Loc, "constant vector must not be empty");
2666 if (!Elts[0]->getType()->isIntegerTy() &&
2667 !Elts[0]->getType()->isFloatingPointTy() &&
2668 !Elts[0]->getType()->isPointerTy())
2669 return Error(FirstEltLoc,
2670 "vector elements must have integer, pointer or floating point type");
2672 // Verify that all the vector elements have the same type.
2673 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2674 if (Elts[i]->getType() != Elts[0]->getType())
2675 return Error(FirstEltLoc,
2676 "vector element #" + Twine(i) +
2677 " is not of type '" + getTypeString(Elts[0]->getType()));
2679 ID.ConstantVal = ConstantVector::get(Elts);
2680 ID.Kind = ValID::t_Constant;
2683 case lltok::lsquare: { // Array Constant
2685 SmallVector<Constant*, 16> Elts;
2686 LocTy FirstEltLoc = Lex.getLoc();
2687 if (ParseGlobalValueVector(Elts) ||
2688 ParseToken(lltok::rsquare, "expected end of array constant"))
2691 // Handle empty element.
2693 // Use undef instead of an array because it's inconvenient to determine
2694 // the element type at this point, there being no elements to examine.
2695 ID.Kind = ValID::t_EmptyArray;
2699 if (!Elts[0]->getType()->isFirstClassType())
2700 return Error(FirstEltLoc, "invalid array element type: " +
2701 getTypeString(Elts[0]->getType()));
2703 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2705 // Verify all elements are correct type!
2706 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2707 if (Elts[i]->getType() != Elts[0]->getType())
2708 return Error(FirstEltLoc,
2709 "array element #" + Twine(i) +
2710 " is not of type '" + getTypeString(Elts[0]->getType()));
2713 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2714 ID.Kind = ValID::t_Constant;
2717 case lltok::kw_c: // c "foo"
2719 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2721 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2722 ID.Kind = ValID::t_Constant;
2725 case lltok::kw_asm: {
2726 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2728 bool HasSideEffect, AlignStack, AsmDialect;
2730 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2731 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2732 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2733 ParseStringConstant(ID.StrVal) ||
2734 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2735 ParseToken(lltok::StringConstant, "expected constraint string"))
2737 ID.StrVal2 = Lex.getStrVal();
2738 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2739 (unsigned(AsmDialect)<<2);
2740 ID.Kind = ValID::t_InlineAsm;
2744 case lltok::kw_blockaddress: {
2745 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2750 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2752 ParseToken(lltok::comma, "expected comma in block address expression")||
2753 ParseValID(Label) ||
2754 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2757 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2758 return Error(Fn.Loc, "expected function name in blockaddress");
2759 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2760 return Error(Label.Loc, "expected basic block name in blockaddress");
2762 // Try to find the function (but skip it if it's forward-referenced).
2763 GlobalValue *GV = nullptr;
2764 if (Fn.Kind == ValID::t_GlobalID) {
2765 if (Fn.UIntVal < NumberedVals.size())
2766 GV = NumberedVals[Fn.UIntVal];
2767 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2768 GV = M->getNamedValue(Fn.StrVal);
2770 Function *F = nullptr;
2772 // Confirm that it's actually a function with a definition.
2773 if (!isa<Function>(GV))
2774 return Error(Fn.Loc, "expected function name in blockaddress");
2775 F = cast<Function>(GV);
2776 if (F->isDeclaration())
2777 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2781 // Make a global variable as a placeholder for this reference.
2782 GlobalValue *&FwdRef =
2783 ForwardRefBlockAddresses.insert(std::make_pair(
2785 std::map<ValID, GlobalValue *>()))
2786 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2789 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2790 GlobalValue::InternalLinkage, nullptr, "");
2791 ID.ConstantVal = FwdRef;
2792 ID.Kind = ValID::t_Constant;
2796 // We found the function; now find the basic block. Don't use PFS, since we
2797 // might be inside a constant expression.
2799 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2800 if (Label.Kind == ValID::t_LocalID)
2801 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2803 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2805 return Error(Label.Loc, "referenced value is not a basic block");
2807 if (Label.Kind == ValID::t_LocalID)
2808 return Error(Label.Loc, "cannot take address of numeric label after "
2809 "the function is defined");
2810 BB = dyn_cast_or_null<BasicBlock>(
2811 F->getValueSymbolTable().lookup(Label.StrVal));
2813 return Error(Label.Loc, "referenced value is not a basic block");
2816 ID.ConstantVal = BlockAddress::get(F, BB);
2817 ID.Kind = ValID::t_Constant;
2821 case lltok::kw_trunc:
2822 case lltok::kw_zext:
2823 case lltok::kw_sext:
2824 case lltok::kw_fptrunc:
2825 case lltok::kw_fpext:
2826 case lltok::kw_bitcast:
2827 case lltok::kw_addrspacecast:
2828 case lltok::kw_uitofp:
2829 case lltok::kw_sitofp:
2830 case lltok::kw_fptoui:
2831 case lltok::kw_fptosi:
2832 case lltok::kw_inttoptr:
2833 case lltok::kw_ptrtoint: {
2834 unsigned Opc = Lex.getUIntVal();
2835 Type *DestTy = nullptr;
2838 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2839 ParseGlobalTypeAndValue(SrcVal) ||
2840 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2841 ParseType(DestTy) ||
2842 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2844 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2845 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2846 getTypeString(SrcVal->getType()) + "' to '" +
2847 getTypeString(DestTy) + "'");
2848 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2850 ID.Kind = ValID::t_Constant;
2853 case lltok::kw_extractvalue: {
2856 SmallVector<unsigned, 4> Indices;
2857 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2858 ParseGlobalTypeAndValue(Val) ||
2859 ParseIndexList(Indices) ||
2860 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2863 if (!Val->getType()->isAggregateType())
2864 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2865 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2866 return Error(ID.Loc, "invalid indices for extractvalue");
2867 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2868 ID.Kind = ValID::t_Constant;
2871 case lltok::kw_insertvalue: {
2873 Constant *Val0, *Val1;
2874 SmallVector<unsigned, 4> Indices;
2875 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2876 ParseGlobalTypeAndValue(Val0) ||
2877 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2878 ParseGlobalTypeAndValue(Val1) ||
2879 ParseIndexList(Indices) ||
2880 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2882 if (!Val0->getType()->isAggregateType())
2883 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2885 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2887 return Error(ID.Loc, "invalid indices for insertvalue");
2888 if (IndexedType != Val1->getType())
2889 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2890 getTypeString(Val1->getType()) +
2891 "' instead of '" + getTypeString(IndexedType) +
2893 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2894 ID.Kind = ValID::t_Constant;
2897 case lltok::kw_icmp:
2898 case lltok::kw_fcmp: {
2899 unsigned PredVal, Opc = Lex.getUIntVal();
2900 Constant *Val0, *Val1;
2902 if (ParseCmpPredicate(PredVal, Opc) ||
2903 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2904 ParseGlobalTypeAndValue(Val0) ||
2905 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2906 ParseGlobalTypeAndValue(Val1) ||
2907 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2910 if (Val0->getType() != Val1->getType())
2911 return Error(ID.Loc, "compare operands must have the same type");
2913 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2915 if (Opc == Instruction::FCmp) {
2916 if (!Val0->getType()->isFPOrFPVectorTy())
2917 return Error(ID.Loc, "fcmp requires floating point operands");
2918 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2920 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2921 if (!Val0->getType()->isIntOrIntVectorTy() &&
2922 !Val0->getType()->getScalarType()->isPointerTy())
2923 return Error(ID.Loc, "icmp requires pointer or integer operands");
2924 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2926 ID.Kind = ValID::t_Constant;
2930 // Binary Operators.
2932 case lltok::kw_fadd:
2934 case lltok::kw_fsub:
2936 case lltok::kw_fmul:
2937 case lltok::kw_udiv:
2938 case lltok::kw_sdiv:
2939 case lltok::kw_fdiv:
2940 case lltok::kw_urem:
2941 case lltok::kw_srem:
2942 case lltok::kw_frem:
2944 case lltok::kw_lshr:
2945 case lltok::kw_ashr: {
2949 unsigned Opc = Lex.getUIntVal();
2950 Constant *Val0, *Val1;
2952 LocTy ModifierLoc = Lex.getLoc();
2953 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2954 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2955 if (EatIfPresent(lltok::kw_nuw))
2957 if (EatIfPresent(lltok::kw_nsw)) {
2959 if (EatIfPresent(lltok::kw_nuw))
2962 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2963 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2964 if (EatIfPresent(lltok::kw_exact))
2967 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2968 ParseGlobalTypeAndValue(Val0) ||
2969 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2970 ParseGlobalTypeAndValue(Val1) ||
2971 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2973 if (Val0->getType() != Val1->getType())
2974 return Error(ID.Loc, "operands of constexpr must have same type");
2975 if (!Val0->getType()->isIntOrIntVectorTy()) {
2977 return Error(ModifierLoc, "nuw only applies to integer operations");
2979 return Error(ModifierLoc, "nsw only applies to integer operations");
2981 // Check that the type is valid for the operator.
2983 case Instruction::Add:
2984 case Instruction::Sub:
2985 case Instruction::Mul:
2986 case Instruction::UDiv:
2987 case Instruction::SDiv:
2988 case Instruction::URem:
2989 case Instruction::SRem:
2990 case Instruction::Shl:
2991 case Instruction::AShr:
2992 case Instruction::LShr:
2993 if (!Val0->getType()->isIntOrIntVectorTy())
2994 return Error(ID.Loc, "constexpr requires integer operands");
2996 case Instruction::FAdd:
2997 case Instruction::FSub:
2998 case Instruction::FMul:
2999 case Instruction::FDiv:
3000 case Instruction::FRem:
3001 if (!Val0->getType()->isFPOrFPVectorTy())
3002 return Error(ID.Loc, "constexpr requires fp operands");
3004 default: llvm_unreachable("Unknown binary operator!");
3007 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3008 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3009 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3010 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3012 ID.Kind = ValID::t_Constant;
3016 // Logical Operations
3019 case lltok::kw_xor: {
3020 unsigned Opc = Lex.getUIntVal();
3021 Constant *Val0, *Val1;
3023 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3024 ParseGlobalTypeAndValue(Val0) ||
3025 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3026 ParseGlobalTypeAndValue(Val1) ||
3027 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3029 if (Val0->getType() != Val1->getType())
3030 return Error(ID.Loc, "operands of constexpr must have same type");
3031 if (!Val0->getType()->isIntOrIntVectorTy())
3032 return Error(ID.Loc,
3033 "constexpr requires integer or integer vector operands");
3034 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3035 ID.Kind = ValID::t_Constant;
3039 case lltok::kw_getelementptr:
3040 case lltok::kw_shufflevector:
3041 case lltok::kw_insertelement:
3042 case lltok::kw_extractelement:
3043 case lltok::kw_select: {
3044 unsigned Opc = Lex.getUIntVal();
3045 SmallVector<Constant*, 16> Elts;
3046 bool InBounds = false;
3050 if (Opc == Instruction::GetElementPtr)
3051 InBounds = EatIfPresent(lltok::kw_inbounds);
3053 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3056 LocTy ExplicitTypeLoc = Lex.getLoc();
3057 if (Opc == Instruction::GetElementPtr) {
3058 if (ParseType(Ty) ||
3059 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3063 if (ParseGlobalValueVector(Elts) ||
3064 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3067 if (Opc == Instruction::GetElementPtr) {
3068 if (Elts.size() == 0 ||
3069 !Elts[0]->getType()->getScalarType()->isPointerTy())
3070 return Error(ID.Loc, "base of getelementptr must be a pointer");
3072 Type *BaseType = Elts[0]->getType();
3073 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3074 if (Ty != BasePointerType->getElementType())
3077 "explicit pointee type doesn't match operand's pointee type");
3079 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3080 for (Constant *Val : Indices) {
3081 Type *ValTy = Val->getType();
3082 if (!ValTy->getScalarType()->isIntegerTy())
3083 return Error(ID.Loc, "getelementptr index must be an integer");
3084 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3085 return Error(ID.Loc, "getelementptr index type missmatch");
3086 if (ValTy->isVectorTy()) {
3087 unsigned ValNumEl = ValTy->getVectorNumElements();
3088 unsigned PtrNumEl = BaseType->getVectorNumElements();
3089 if (ValNumEl != PtrNumEl)
3092 "getelementptr vector index has a wrong number of elements");
3096 SmallPtrSet<Type*, 4> Visited;
3097 if (!Indices.empty() && !Ty->isSized(&Visited))
3098 return Error(ID.Loc, "base element of getelementptr must be sized");
3100 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3101 return Error(ID.Loc, "invalid getelementptr indices");
3103 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3104 } else if (Opc == Instruction::Select) {
3105 if (Elts.size() != 3)
3106 return Error(ID.Loc, "expected three operands to select");
3107 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3109 return Error(ID.Loc, Reason);
3110 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3111 } else if (Opc == Instruction::ShuffleVector) {
3112 if (Elts.size() != 3)
3113 return Error(ID.Loc, "expected three operands to shufflevector");
3114 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3115 return Error(ID.Loc, "invalid operands to shufflevector");
3117 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3118 } else if (Opc == Instruction::ExtractElement) {
3119 if (Elts.size() != 2)
3120 return Error(ID.Loc, "expected two operands to extractelement");
3121 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3122 return Error(ID.Loc, "invalid extractelement operands");
3123 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3125 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3126 if (Elts.size() != 3)
3127 return Error(ID.Loc, "expected three operands to insertelement");
3128 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3129 return Error(ID.Loc, "invalid insertelement operands");
3131 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3134 ID.Kind = ValID::t_Constant;
3143 /// ParseGlobalValue - Parse a global value with the specified type.
3144 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3148 bool Parsed = ParseValID(ID) ||
3149 ConvertValIDToValue(Ty, ID, V, nullptr);
3150 if (V && !(C = dyn_cast<Constant>(V)))
3151 return Error(ID.Loc, "global values must be constants");
3155 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3157 return ParseType(Ty) ||
3158 ParseGlobalValue(Ty, V);
3161 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3164 LocTy KwLoc = Lex.getLoc();
3165 if (!EatIfPresent(lltok::kw_comdat))
3168 if (EatIfPresent(lltok::lparen)) {
3169 if (Lex.getKind() != lltok::ComdatVar)
3170 return TokError("expected comdat variable");
3171 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3173 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3176 if (GlobalName.empty())
3177 return TokError("comdat cannot be unnamed");
3178 C = getComdat(GlobalName, KwLoc);
3184 /// ParseGlobalValueVector
3186 /// ::= TypeAndValue (',' TypeAndValue)*
3187 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3189 if (Lex.getKind() == lltok::rbrace ||
3190 Lex.getKind() == lltok::rsquare ||
3191 Lex.getKind() == lltok::greater ||
3192 Lex.getKind() == lltok::rparen)
3196 if (ParseGlobalTypeAndValue(C)) return true;
3199 while (EatIfPresent(lltok::comma)) {
3200 if (ParseGlobalTypeAndValue(C)) return true;
3207 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3208 SmallVector<Metadata *, 16> Elts;
3209 if (ParseMDNodeVector(Elts))
3212 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3219 /// ::= !DILocation(...)
3220 bool LLParser::ParseMDNode(MDNode *&N) {
3221 if (Lex.getKind() == lltok::MetadataVar)
3222 return ParseSpecializedMDNode(N);
3224 return ParseToken(lltok::exclaim, "expected '!' here") ||
3228 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3230 if (Lex.getKind() == lltok::lbrace)
3231 return ParseMDTuple(N);
3234 return ParseMDNodeID(N);
3239 /// Structure to represent an optional metadata field.
3240 template <class FieldTy> struct MDFieldImpl {
3241 typedef MDFieldImpl ImplTy;
3245 void assign(FieldTy Val) {
3247 this->Val = std::move(Val);
3250 explicit MDFieldImpl(FieldTy Default)
3251 : Val(std::move(Default)), Seen(false) {}
3254 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3257 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3258 : ImplTy(Default), Max(Max) {}
3260 struct LineField : public MDUnsignedField {
3261 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3263 struct ColumnField : public MDUnsignedField {
3264 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3266 struct DwarfTagField : public MDUnsignedField {
3267 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3268 DwarfTagField(dwarf::Tag DefaultTag)
3269 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3271 struct DwarfAttEncodingField : public MDUnsignedField {
3272 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3274 struct DwarfVirtualityField : public MDUnsignedField {
3275 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3277 struct DwarfLangField : public MDUnsignedField {
3278 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3281 struct DIFlagField : public MDUnsignedField {
3282 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3285 struct MDSignedField : public MDFieldImpl<int64_t> {
3289 MDSignedField(int64_t Default = 0)
3290 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3291 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3292 : ImplTy(Default), Min(Min), Max(Max) {}
3295 struct MDBoolField : public MDFieldImpl<bool> {
3296 MDBoolField(bool Default = false) : ImplTy(Default) {}
3298 struct MDField : public MDFieldImpl<Metadata *> {
3301 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3303 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3304 MDConstant() : ImplTy(nullptr) {}
3306 struct MDStringField : public MDFieldImpl<MDString *> {
3308 MDStringField(bool AllowEmpty = true)
3309 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3311 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3312 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3320 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3321 MDUnsignedField &Result) {
3322 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3323 return TokError("expected unsigned integer");
3325 auto &U = Lex.getAPSIntVal();
3326 if (U.ugt(Result.Max))
3327 return TokError("value for '" + Name + "' too large, limit is " +
3329 Result.assign(U.getZExtValue());
3330 assert(Result.Val <= Result.Max && "Expected value in range");
3336 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3337 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3340 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3341 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3345 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3346 if (Lex.getKind() == lltok::APSInt)
3347 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3349 if (Lex.getKind() != lltok::DwarfTag)
3350 return TokError("expected DWARF tag");
3352 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3353 if (Tag == dwarf::DW_TAG_invalid)
3354 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3355 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3363 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3364 DwarfVirtualityField &Result) {
3365 if (Lex.getKind() == lltok::APSInt)
3366 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3368 if (Lex.getKind() != lltok::DwarfVirtuality)
3369 return TokError("expected DWARF virtuality code");
3371 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3373 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3374 Lex.getStrVal() + "'");
3375 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3376 Result.assign(Virtuality);
3382 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3383 if (Lex.getKind() == lltok::APSInt)
3384 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3386 if (Lex.getKind() != lltok::DwarfLang)
3387 return TokError("expected DWARF language");
3389 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3391 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3393 assert(Lang <= Result.Max && "Expected valid DWARF language");
3394 Result.assign(Lang);
3400 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3401 DwarfAttEncodingField &Result) {
3402 if (Lex.getKind() == lltok::APSInt)
3403 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3405 if (Lex.getKind() != lltok::DwarfAttEncoding)
3406 return TokError("expected DWARF type attribute encoding");
3408 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3410 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3411 Lex.getStrVal() + "'");
3412 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3413 Result.assign(Encoding);
3420 /// ::= DIFlagVector
3421 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3423 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3424 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3426 // Parser for a single flag.
3427 auto parseFlag = [&](unsigned &Val) {
3428 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3429 return ParseUInt32(Val);
3431 if (Lex.getKind() != lltok::DIFlag)
3432 return TokError("expected debug info flag");
3434 Val = DINode::getFlag(Lex.getStrVal());
3436 return TokError(Twine("invalid debug info flag flag '") +
3437 Lex.getStrVal() + "'");
3442 // Parse the flags and combine them together.
3443 unsigned Combined = 0;
3449 } while (EatIfPresent(lltok::bar));
3451 Result.assign(Combined);
3456 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3457 MDSignedField &Result) {
3458 if (Lex.getKind() != lltok::APSInt)
3459 return TokError("expected signed integer");
3461 auto &S = Lex.getAPSIntVal();
3463 return TokError("value for '" + Name + "' too small, limit is " +
3466 return TokError("value for '" + Name + "' too large, limit is " +
3468 Result.assign(S.getExtValue());
3469 assert(Result.Val >= Result.Min && "Expected value in range");
3470 assert(Result.Val <= Result.Max && "Expected value in range");
3476 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3477 switch (Lex.getKind()) {
3479 return TokError("expected 'true' or 'false'");
3480 case lltok::kw_true:
3481 Result.assign(true);
3483 case lltok::kw_false:
3484 Result.assign(false);
3492 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3493 if (Lex.getKind() == lltok::kw_null) {
3494 if (!Result.AllowNull)
3495 return TokError("'" + Name + "' cannot be null");
3497 Result.assign(nullptr);
3502 if (ParseMetadata(MD, nullptr))
3510 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3512 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3515 Result.assign(cast<ConstantAsMetadata>(MD));
3520 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3521 LocTy ValueLoc = Lex.getLoc();
3523 if (ParseStringConstant(S))
3526 if (!Result.AllowEmpty && S.empty())
3527 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3529 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3534 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3535 SmallVector<Metadata *, 4> MDs;
3536 if (ParseMDNodeVector(MDs))
3539 Result.assign(std::move(MDs));
3543 } // end namespace llvm
3545 template <class ParserTy>
3546 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3548 if (Lex.getKind() != lltok::LabelStr)
3549 return TokError("expected field label here");
3553 } while (EatIfPresent(lltok::comma));
3558 template <class ParserTy>
3559 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3560 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3563 if (ParseToken(lltok::lparen, "expected '(' here"))
3565 if (Lex.getKind() != lltok::rparen)
3566 if (ParseMDFieldsImplBody(parseField))
3569 ClosingLoc = Lex.getLoc();
3570 return ParseToken(lltok::rparen, "expected ')' here");
3573 template <class FieldTy>
3574 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3576 return TokError("field '" + Name + "' cannot be specified more than once");
3578 LocTy Loc = Lex.getLoc();
3580 return ParseMDField(Loc, Name, Result);
3583 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3584 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3586 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3587 if (Lex.getStrVal() == #CLASS) \
3588 return Parse##CLASS(N, IsDistinct);
3589 #include "llvm/IR/Metadata.def"
3591 return TokError("expected metadata type");
3594 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3595 #define NOP_FIELD(NAME, TYPE, INIT)
3596 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3598 return Error(ClosingLoc, "missing required field '" #NAME "'");
3599 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3600 if (Lex.getStrVal() == #NAME) \
3601 return ParseMDField(#NAME, NAME);
3602 #define PARSE_MD_FIELDS() \
3603 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3606 if (ParseMDFieldsImpl([&]() -> bool { \
3607 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3608 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3611 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3613 #define GET_OR_DISTINCT(CLASS, ARGS) \
3614 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3616 /// ParseDILocationFields:
3617 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3618 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3619 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3620 OPTIONAL(line, LineField, ); \
3621 OPTIONAL(column, ColumnField, ); \
3622 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3623 OPTIONAL(inlinedAt, MDField, );
3625 #undef VISIT_MD_FIELDS
3627 Result = GET_OR_DISTINCT(
3628 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3632 /// ParseGenericDINode:
3633 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3634 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3635 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3636 REQUIRED(tag, DwarfTagField, ); \
3637 OPTIONAL(header, MDStringField, ); \
3638 OPTIONAL(operands, MDFieldList, );
3640 #undef VISIT_MD_FIELDS
3642 Result = GET_OR_DISTINCT(GenericDINode,
3643 (Context, tag.Val, header.Val, operands.Val));
3647 /// ParseDISubrange:
3648 /// ::= !DISubrange(count: 30, lowerBound: 2)
3649 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3650 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3651 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3652 OPTIONAL(lowerBound, MDSignedField, );
3654 #undef VISIT_MD_FIELDS
3656 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3660 /// ParseDIEnumerator:
3661 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3662 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3663 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3664 REQUIRED(name, MDStringField, ); \
3665 REQUIRED(value, MDSignedField, );
3667 #undef VISIT_MD_FIELDS
3669 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3673 /// ParseDIBasicType:
3674 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3675 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3676 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3677 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3678 OPTIONAL(name, MDStringField, ); \
3679 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3680 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3681 OPTIONAL(encoding, DwarfAttEncodingField, );
3683 #undef VISIT_MD_FIELDS
3685 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3686 align.Val, encoding.Val));
3690 /// ParseDIDerivedType:
3691 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3692 /// line: 7, scope: !1, baseType: !2, size: 32,
3693 /// align: 32, offset: 0, flags: 0, extraData: !3)
3694 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3695 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3696 REQUIRED(tag, DwarfTagField, ); \
3697 OPTIONAL(name, MDStringField, ); \
3698 OPTIONAL(file, MDField, ); \
3699 OPTIONAL(line, LineField, ); \
3700 OPTIONAL(scope, MDField, ); \
3701 REQUIRED(baseType, MDField, ); \
3702 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3703 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3704 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3705 OPTIONAL(flags, DIFlagField, ); \
3706 OPTIONAL(extraData, MDField, );
3708 #undef VISIT_MD_FIELDS
3710 Result = GET_OR_DISTINCT(DIDerivedType,
3711 (Context, tag.Val, name.Val, file.Val, line.Val,
3712 scope.Val, baseType.Val, size.Val, align.Val,
3713 offset.Val, flags.Val, extraData.Val));
3717 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3718 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3719 REQUIRED(tag, DwarfTagField, ); \
3720 OPTIONAL(name, MDStringField, ); \
3721 OPTIONAL(file, MDField, ); \
3722 OPTIONAL(line, LineField, ); \
3723 OPTIONAL(scope, MDField, ); \
3724 OPTIONAL(baseType, MDField, ); \
3725 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3726 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3727 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3728 OPTIONAL(flags, DIFlagField, ); \
3729 OPTIONAL(elements, MDField, ); \
3730 OPTIONAL(runtimeLang, DwarfLangField, ); \
3731 OPTIONAL(vtableHolder, MDField, ); \
3732 OPTIONAL(templateParams, MDField, ); \
3733 OPTIONAL(identifier, MDStringField, );
3735 #undef VISIT_MD_FIELDS
3737 Result = GET_OR_DISTINCT(
3739 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3740 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3741 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3745 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3746 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3747 OPTIONAL(flags, DIFlagField, ); \
3748 REQUIRED(types, MDField, );
3750 #undef VISIT_MD_FIELDS
3752 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3756 /// ParseDIFileType:
3757 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3758 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3759 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3760 REQUIRED(filename, MDStringField, ); \
3761 REQUIRED(directory, MDStringField, );
3763 #undef VISIT_MD_FIELDS
3765 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3769 /// ParseDICompileUnit:
3770 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3771 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3772 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3773 /// enums: !1, retainedTypes: !2, subprograms: !3,
3774 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3775 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3777 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3779 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3780 REQUIRED(language, DwarfLangField, ); \
3781 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3782 OPTIONAL(producer, MDStringField, ); \
3783 OPTIONAL(isOptimized, MDBoolField, ); \
3784 OPTIONAL(flags, MDStringField, ); \
3785 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3786 OPTIONAL(splitDebugFilename, MDStringField, ); \
3787 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3788 OPTIONAL(enums, MDField, ); \
3789 OPTIONAL(retainedTypes, MDField, ); \
3790 OPTIONAL(subprograms, MDField, ); \
3791 OPTIONAL(globals, MDField, ); \
3792 OPTIONAL(imports, MDField, ); \
3793 OPTIONAL(dwoId, MDUnsignedField, );
3795 #undef VISIT_MD_FIELDS
3797 Result = DICompileUnit::getDistinct(
3798 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3799 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3800 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3804 /// ParseDISubprogram:
3805 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3806 /// file: !1, line: 7, type: !2, isLocal: false,
3807 /// isDefinition: true, scopeLine: 8, containingType: !3,
3808 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3809 /// virtualIndex: 10, flags: 11,
3810 /// isOptimized: false, templateParams: !4, declaration: !5,
3812 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3813 auto Loc = Lex.getLoc();
3814 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3815 OPTIONAL(scope, MDField, ); \
3816 OPTIONAL(name, MDStringField, ); \
3817 OPTIONAL(linkageName, MDStringField, ); \
3818 OPTIONAL(file, MDField, ); \
3819 OPTIONAL(line, LineField, ); \
3820 OPTIONAL(type, MDField, ); \
3821 OPTIONAL(isLocal, MDBoolField, ); \
3822 OPTIONAL(isDefinition, MDBoolField, (true)); \
3823 OPTIONAL(scopeLine, LineField, ); \
3824 OPTIONAL(containingType, MDField, ); \
3825 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3826 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3827 OPTIONAL(flags, DIFlagField, ); \
3828 OPTIONAL(isOptimized, MDBoolField, ); \
3829 OPTIONAL(templateParams, MDField, ); \
3830 OPTIONAL(declaration, MDField, ); \
3831 OPTIONAL(variables, MDField, );
3833 #undef VISIT_MD_FIELDS
3835 if (isDefinition.Val && !IsDistinct)
3838 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3840 Result = GET_OR_DISTINCT(
3842 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3843 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3844 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3845 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3849 /// ParseDILexicalBlock:
3850 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3851 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3852 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3853 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3854 OPTIONAL(file, MDField, ); \
3855 OPTIONAL(line, LineField, ); \
3856 OPTIONAL(column, ColumnField, );
3858 #undef VISIT_MD_FIELDS
3860 Result = GET_OR_DISTINCT(
3861 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3865 /// ParseDILexicalBlockFile:
3866 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3867 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3868 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3869 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3870 OPTIONAL(file, MDField, ); \
3871 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3873 #undef VISIT_MD_FIELDS
3875 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3876 (Context, scope.Val, file.Val, discriminator.Val));
3880 /// ParseDINamespace:
3881 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3882 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3883 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3884 REQUIRED(scope, MDField, ); \
3885 OPTIONAL(file, MDField, ); \
3886 OPTIONAL(name, MDStringField, ); \
3887 OPTIONAL(line, LineField, );
3889 #undef VISIT_MD_FIELDS
3891 Result = GET_OR_DISTINCT(DINamespace,
3892 (Context, scope.Val, file.Val, name.Val, line.Val));
3897 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3898 /// includePath: "/usr/include", isysroot: "/")
3899 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3900 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3901 REQUIRED(scope, MDField, ); \
3902 REQUIRED(name, MDStringField, ); \
3903 OPTIONAL(configMacros, MDStringField, ); \
3904 OPTIONAL(includePath, MDStringField, ); \
3905 OPTIONAL(isysroot, MDStringField, );
3907 #undef VISIT_MD_FIELDS
3909 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3910 configMacros.Val, includePath.Val, isysroot.Val));
3914 /// ParseDITemplateTypeParameter:
3915 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3916 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3917 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3918 OPTIONAL(name, MDStringField, ); \
3919 REQUIRED(type, MDField, );
3921 #undef VISIT_MD_FIELDS
3924 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3928 /// ParseDITemplateValueParameter:
3929 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3930 /// name: "V", type: !1, value: i32 7)
3931 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3932 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3933 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3934 OPTIONAL(name, MDStringField, ); \
3935 OPTIONAL(type, MDField, ); \
3936 REQUIRED(value, MDField, );
3938 #undef VISIT_MD_FIELDS
3940 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3941 (Context, tag.Val, name.Val, type.Val, value.Val));
3945 /// ParseDIGlobalVariable:
3946 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3947 /// file: !1, line: 7, type: !2, isLocal: false,
3948 /// isDefinition: true, variable: i32* @foo,
3949 /// declaration: !3)
3950 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3951 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3952 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3953 OPTIONAL(scope, MDField, ); \
3954 OPTIONAL(linkageName, MDStringField, ); \
3955 OPTIONAL(file, MDField, ); \
3956 OPTIONAL(line, LineField, ); \
3957 OPTIONAL(type, MDField, ); \
3958 OPTIONAL(isLocal, MDBoolField, ); \
3959 OPTIONAL(isDefinition, MDBoolField, (true)); \
3960 OPTIONAL(variable, MDConstant, ); \
3961 OPTIONAL(declaration, MDField, );
3963 #undef VISIT_MD_FIELDS
3965 Result = GET_OR_DISTINCT(DIGlobalVariable,
3966 (Context, scope.Val, name.Val, linkageName.Val,
3967 file.Val, line.Val, type.Val, isLocal.Val,
3968 isDefinition.Val, variable.Val, declaration.Val));
3972 /// ParseDILocalVariable:
3973 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3974 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3975 /// ::= !DILocalVariable(scope: !0, name: "foo",
3976 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3977 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3978 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3979 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3980 OPTIONAL(name, MDStringField, ); \
3981 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3982 OPTIONAL(file, MDField, ); \
3983 OPTIONAL(line, LineField, ); \
3984 OPTIONAL(type, MDField, ); \
3985 OPTIONAL(flags, DIFlagField, );
3987 #undef VISIT_MD_FIELDS
3989 Result = GET_OR_DISTINCT(DILocalVariable,
3990 (Context, scope.Val, name.Val, file.Val, line.Val,
3991 type.Val, arg.Val, flags.Val));
3995 /// ParseDIExpression:
3996 /// ::= !DIExpression(0, 7, -1)
3997 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3998 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4001 if (ParseToken(lltok::lparen, "expected '(' here"))
4004 SmallVector<uint64_t, 8> Elements;
4005 if (Lex.getKind() != lltok::rparen)
4007 if (Lex.getKind() == lltok::DwarfOp) {
4008 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4010 Elements.push_back(Op);
4013 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4016 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4017 return TokError("expected unsigned integer");
4019 auto &U = Lex.getAPSIntVal();
4020 if (U.ugt(UINT64_MAX))
4021 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4022 Elements.push_back(U.getZExtValue());
4024 } while (EatIfPresent(lltok::comma));
4026 if (ParseToken(lltok::rparen, "expected ')' here"))
4029 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4033 /// ParseDIObjCProperty:
4034 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4035 /// getter: "getFoo", attributes: 7, type: !2)
4036 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4037 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4038 OPTIONAL(name, MDStringField, ); \
4039 OPTIONAL(file, MDField, ); \
4040 OPTIONAL(line, LineField, ); \
4041 OPTIONAL(setter, MDStringField, ); \
4042 OPTIONAL(getter, MDStringField, ); \
4043 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4044 OPTIONAL(type, MDField, );
4046 #undef VISIT_MD_FIELDS
4048 Result = GET_OR_DISTINCT(DIObjCProperty,
4049 (Context, name.Val, file.Val, line.Val, setter.Val,
4050 getter.Val, attributes.Val, type.Val));
4054 /// ParseDIImportedEntity:
4055 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4056 /// line: 7, name: "foo")
4057 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4058 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4059 REQUIRED(tag, DwarfTagField, ); \
4060 REQUIRED(scope, MDField, ); \
4061 OPTIONAL(entity, MDField, ); \
4062 OPTIONAL(line, LineField, ); \
4063 OPTIONAL(name, MDStringField, );
4065 #undef VISIT_MD_FIELDS
4067 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4068 entity.Val, line.Val, name.Val));
4072 #undef PARSE_MD_FIELD
4074 #undef REQUIRE_FIELD
4075 #undef DECLARE_FIELD
4077 /// ParseMetadataAsValue
4078 /// ::= metadata i32 %local
4079 /// ::= metadata i32 @global
4080 /// ::= metadata i32 7
4082 /// ::= metadata !{...}
4083 /// ::= metadata !"string"
4084 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4085 // Note: the type 'metadata' has already been parsed.
4087 if (ParseMetadata(MD, &PFS))
4090 V = MetadataAsValue::get(Context, MD);
4094 /// ParseValueAsMetadata
4098 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4099 PerFunctionState *PFS) {
4102 if (ParseType(Ty, TypeMsg, Loc))
4104 if (Ty->isMetadataTy())
4105 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4108 if (ParseValue(Ty, V, PFS))
4111 MD = ValueAsMetadata::get(V);
4122 /// ::= !DILocation(...)
4123 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4124 if (Lex.getKind() == lltok::MetadataVar) {
4126 if (ParseSpecializedMDNode(N))
4134 if (Lex.getKind() != lltok::exclaim)
4135 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4138 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4142 // ::= '!' STRINGCONSTANT
4143 if (Lex.getKind() == lltok::StringConstant) {
4145 if (ParseMDString(S))
4155 if (ParseMDNodeTail(N))
4162 //===----------------------------------------------------------------------===//
4163 // Function Parsing.
4164 //===----------------------------------------------------------------------===//
4166 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4167 PerFunctionState *PFS,
4168 OperatorConstraint OC) {
4169 if (Ty->isFunctionTy())
4170 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4172 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4175 return Error(ID.Loc, "Catchpad value required in this position");
4177 return Error(ID.Loc, "Cleanuppad value required in this position");
4179 llvm_unreachable("Unexpected constraint kind");
4184 case ValID::t_LocalID:
4185 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4186 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4187 return V == nullptr;
4188 case ValID::t_LocalName:
4189 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4190 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4191 return V == nullptr;
4192 case ValID::t_InlineAsm: {
4193 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4194 return Error(ID.Loc, "invalid type for inline asm constraint string");
4195 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4196 (ID.UIntVal >> 1) & 1,
4197 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4200 case ValID::t_GlobalName:
4201 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4202 return V == nullptr;
4203 case ValID::t_GlobalID:
4204 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4205 return V == nullptr;
4206 case ValID::t_APSInt:
4207 if (!Ty->isIntegerTy())
4208 return Error(ID.Loc, "integer constant must have integer type");
4209 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4210 V = ConstantInt::get(Context, ID.APSIntVal);
4212 case ValID::t_APFloat:
4213 if (!Ty->isFloatingPointTy() ||
4214 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4215 return Error(ID.Loc, "floating point constant invalid for type");
4217 // The lexer has no type info, so builds all half, float, and double FP
4218 // constants as double. Fix this here. Long double does not need this.
4219 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4222 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4224 else if (Ty->isFloatTy())
4225 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4228 V = ConstantFP::get(Context, ID.APFloatVal);
4230 if (V->getType() != Ty)
4231 return Error(ID.Loc, "floating point constant does not have type '" +
4232 getTypeString(Ty) + "'");
4236 if (!Ty->isPointerTy())
4237 return Error(ID.Loc, "null must be a pointer type");
4238 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4240 case ValID::t_Undef:
4241 // FIXME: LabelTy should not be a first-class type.
4242 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4243 return Error(ID.Loc, "invalid type for undef constant");
4244 V = UndefValue::get(Ty);
4246 case ValID::t_EmptyArray:
4247 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4248 return Error(ID.Loc, "invalid empty array initializer");
4249 V = UndefValue::get(Ty);
4252 // FIXME: LabelTy should not be a first-class type.
4253 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4254 return Error(ID.Loc, "invalid type for null constant");
4255 V = Constant::getNullValue(Ty);
4258 if (!Ty->isTokenTy())
4259 return Error(ID.Loc, "invalid type for none constant");
4260 V = Constant::getNullValue(Ty);
4262 case ValID::t_Constant:
4263 if (ID.ConstantVal->getType() != Ty)
4264 return Error(ID.Loc, "constant expression type mismatch");
4268 case ValID::t_ConstantStruct:
4269 case ValID::t_PackedConstantStruct:
4270 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4271 if (ST->getNumElements() != ID.UIntVal)
4272 return Error(ID.Loc,
4273 "initializer with struct type has wrong # elements");
4274 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4275 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4277 // Verify that the elements are compatible with the structtype.
4278 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4279 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4280 return Error(ID.Loc, "element " + Twine(i) +
4281 " of struct initializer doesn't match struct element type");
4283 V = ConstantStruct::get(
4284 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4286 return Error(ID.Loc, "constant expression type mismatch");
4289 llvm_unreachable("Invalid ValID");
4292 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4295 auto Loc = Lex.getLoc();
4296 if (ParseValID(ID, /*PFS=*/nullptr))
4299 case ValID::t_APSInt:
4300 case ValID::t_APFloat:
4301 case ValID::t_Undef:
4302 case ValID::t_Constant:
4303 case ValID::t_ConstantStruct:
4304 case ValID::t_PackedConstantStruct: {
4306 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4308 assert(isa<Constant>(V) && "Expected a constant value");
4309 C = cast<Constant>(V);
4313 return Error(Loc, "expected a constant value");
4317 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4318 OperatorConstraint OC) {
4321 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4324 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4326 return ParseType(Ty) ||
4327 ParseValue(Ty, V, PFS);
4330 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4331 PerFunctionState &PFS) {
4334 if (ParseTypeAndValue(V, PFS)) return true;
4335 if (!isa<BasicBlock>(V))
4336 return Error(Loc, "expected a basic block");
4337 BB = cast<BasicBlock>(V);
4343 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4344 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4345 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4346 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4347 // Parse the linkage.
4348 LocTy LinkageLoc = Lex.getLoc();
4351 unsigned Visibility;
4352 unsigned DLLStorageClass;
4353 AttrBuilder RetAttrs;
4355 Type *RetType = nullptr;
4356 LocTy RetTypeLoc = Lex.getLoc();
4357 if (ParseOptionalLinkage(Linkage) ||
4358 ParseOptionalVisibility(Visibility) ||
4359 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4360 ParseOptionalCallingConv(CC) ||
4361 ParseOptionalReturnAttrs(RetAttrs) ||
4362 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4365 // Verify that the linkage is ok.
4366 switch ((GlobalValue::LinkageTypes)Linkage) {
4367 case GlobalValue::ExternalLinkage:
4368 break; // always ok.
4369 case GlobalValue::ExternalWeakLinkage:
4371 return Error(LinkageLoc, "invalid linkage for function definition");
4373 case GlobalValue::PrivateLinkage:
4374 case GlobalValue::InternalLinkage:
4375 case GlobalValue::AvailableExternallyLinkage:
4376 case GlobalValue::LinkOnceAnyLinkage:
4377 case GlobalValue::LinkOnceODRLinkage:
4378 case GlobalValue::WeakAnyLinkage:
4379 case GlobalValue::WeakODRLinkage:
4381 return Error(LinkageLoc, "invalid linkage for function declaration");
4383 case GlobalValue::AppendingLinkage:
4384 case GlobalValue::CommonLinkage:
4385 return Error(LinkageLoc, "invalid function linkage type");
4388 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4389 return Error(LinkageLoc,
4390 "symbol with local linkage must have default visibility");
4392 if (!FunctionType::isValidReturnType(RetType))
4393 return Error(RetTypeLoc, "invalid function return type");
4395 LocTy NameLoc = Lex.getLoc();
4397 std::string FunctionName;
4398 if (Lex.getKind() == lltok::GlobalVar) {
4399 FunctionName = Lex.getStrVal();
4400 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4401 unsigned NameID = Lex.getUIntVal();
4403 if (NameID != NumberedVals.size())
4404 return TokError("function expected to be numbered '%" +
4405 Twine(NumberedVals.size()) + "'");
4407 return TokError("expected function name");
4412 if (Lex.getKind() != lltok::lparen)
4413 return TokError("expected '(' in function argument list");
4415 SmallVector<ArgInfo, 8> ArgList;
4417 AttrBuilder FuncAttrs;
4418 std::vector<unsigned> FwdRefAttrGrps;
4420 std::string Section;
4424 LocTy UnnamedAddrLoc;
4425 Constant *Prefix = nullptr;
4426 Constant *Prologue = nullptr;
4427 Constant *PersonalityFn = nullptr;
4430 if (ParseArgumentList(ArgList, isVarArg) ||
4431 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4433 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4435 (EatIfPresent(lltok::kw_section) &&
4436 ParseStringConstant(Section)) ||
4437 parseOptionalComdat(FunctionName, C) ||
4438 ParseOptionalAlignment(Alignment) ||
4439 (EatIfPresent(lltok::kw_gc) &&
4440 ParseStringConstant(GC)) ||
4441 (EatIfPresent(lltok::kw_prefix) &&
4442 ParseGlobalTypeAndValue(Prefix)) ||
4443 (EatIfPresent(lltok::kw_prologue) &&
4444 ParseGlobalTypeAndValue(Prologue)) ||
4445 (EatIfPresent(lltok::kw_personality) &&
4446 ParseGlobalTypeAndValue(PersonalityFn)))
4449 if (FuncAttrs.contains(Attribute::Builtin))
4450 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4452 // If the alignment was parsed as an attribute, move to the alignment field.
4453 if (FuncAttrs.hasAlignmentAttr()) {
4454 Alignment = FuncAttrs.getAlignment();
4455 FuncAttrs.removeAttribute(Attribute::Alignment);
4458 // Okay, if we got here, the function is syntactically valid. Convert types
4459 // and do semantic checks.
4460 std::vector<Type*> ParamTypeList;
4461 SmallVector<AttributeSet, 8> Attrs;
4463 if (RetAttrs.hasAttributes())
4464 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4465 AttributeSet::ReturnIndex,
4468 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4469 ParamTypeList.push_back(ArgList[i].Ty);
4470 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4471 AttrBuilder B(ArgList[i].Attrs, i + 1);
4472 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4476 if (FuncAttrs.hasAttributes())
4477 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4478 AttributeSet::FunctionIndex,
4481 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4483 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4484 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4487 FunctionType::get(RetType, ParamTypeList, isVarArg);
4488 PointerType *PFT = PointerType::getUnqual(FT);
4491 if (!FunctionName.empty()) {
4492 // If this was a definition of a forward reference, remove the definition
4493 // from the forward reference table and fill in the forward ref.
4494 auto FRVI = ForwardRefVals.find(FunctionName);
4495 if (FRVI != ForwardRefVals.end()) {
4496 Fn = M->getFunction(FunctionName);
4498 return Error(FRVI->second.second, "invalid forward reference to "
4499 "function as global value!");
4500 if (Fn->getType() != PFT)
4501 return Error(FRVI->second.second, "invalid forward reference to "
4502 "function '" + FunctionName + "' with wrong type!");
4504 ForwardRefVals.erase(FRVI);
4505 } else if ((Fn = M->getFunction(FunctionName))) {
4506 // Reject redefinitions.
4507 return Error(NameLoc, "invalid redefinition of function '" +
4508 FunctionName + "'");
4509 } else if (M->getNamedValue(FunctionName)) {
4510 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4514 // If this is a definition of a forward referenced function, make sure the
4516 auto I = ForwardRefValIDs.find(NumberedVals.size());
4517 if (I != ForwardRefValIDs.end()) {
4518 Fn = cast<Function>(I->second.first);
4519 if (Fn->getType() != PFT)
4520 return Error(NameLoc, "type of definition and forward reference of '@" +
4521 Twine(NumberedVals.size()) + "' disagree");
4522 ForwardRefValIDs.erase(I);
4527 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4528 else // Move the forward-reference to the correct spot in the module.
4529 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4531 if (FunctionName.empty())
4532 NumberedVals.push_back(Fn);
4534 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4535 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4536 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4537 Fn->setCallingConv(CC);
4538 Fn->setAttributes(PAL);
4539 Fn->setUnnamedAddr(UnnamedAddr);
4540 Fn->setAlignment(Alignment);
4541 Fn->setSection(Section);
4543 Fn->setPersonalityFn(PersonalityFn);
4544 if (!GC.empty()) Fn->setGC(GC.c_str());
4545 Fn->setPrefixData(Prefix);
4546 Fn->setPrologueData(Prologue);
4547 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4549 // Add all of the arguments we parsed to the function.
4550 Function::arg_iterator ArgIt = Fn->arg_begin();
4551 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4552 // If the argument has a name, insert it into the argument symbol table.
4553 if (ArgList[i].Name.empty()) continue;
4555 // Set the name, if it conflicted, it will be auto-renamed.
4556 ArgIt->setName(ArgList[i].Name);
4558 if (ArgIt->getName() != ArgList[i].Name)
4559 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4560 ArgList[i].Name + "'");
4566 // Check the declaration has no block address forward references.
4568 if (FunctionName.empty()) {
4569 ID.Kind = ValID::t_GlobalID;
4570 ID.UIntVal = NumberedVals.size() - 1;
4572 ID.Kind = ValID::t_GlobalName;
4573 ID.StrVal = FunctionName;
4575 auto Blocks = ForwardRefBlockAddresses.find(ID);
4576 if (Blocks != ForwardRefBlockAddresses.end())
4577 return Error(Blocks->first.Loc,
4578 "cannot take blockaddress inside a declaration");
4582 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4584 if (FunctionNumber == -1) {
4585 ID.Kind = ValID::t_GlobalName;
4586 ID.StrVal = F.getName();
4588 ID.Kind = ValID::t_GlobalID;
4589 ID.UIntVal = FunctionNumber;
4592 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4593 if (Blocks == P.ForwardRefBlockAddresses.end())
4596 for (const auto &I : Blocks->second) {
4597 const ValID &BBID = I.first;
4598 GlobalValue *GV = I.second;
4600 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4601 "Expected local id or name");
4603 if (BBID.Kind == ValID::t_LocalName)
4604 BB = GetBB(BBID.StrVal, BBID.Loc);
4606 BB = GetBB(BBID.UIntVal, BBID.Loc);
4608 return P.Error(BBID.Loc, "referenced value is not a basic block");
4610 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4611 GV->eraseFromParent();
4614 P.ForwardRefBlockAddresses.erase(Blocks);
4618 /// ParseFunctionBody
4619 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4620 bool LLParser::ParseFunctionBody(Function &Fn) {
4621 if (Lex.getKind() != lltok::lbrace)
4622 return TokError("expected '{' in function body");
4623 Lex.Lex(); // eat the {.
4625 int FunctionNumber = -1;
4626 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4628 PerFunctionState PFS(*this, Fn, FunctionNumber);
4630 // Resolve block addresses and allow basic blocks to be forward-declared
4631 // within this function.
4632 if (PFS.resolveForwardRefBlockAddresses())
4634 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4636 // We need at least one basic block.
4637 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4638 return TokError("function body requires at least one basic block");
4640 while (Lex.getKind() != lltok::rbrace &&
4641 Lex.getKind() != lltok::kw_uselistorder)
4642 if (ParseBasicBlock(PFS)) return true;
4644 while (Lex.getKind() != lltok::rbrace)
4645 if (ParseUseListOrder(&PFS))
4651 // Verify function is ok.
4652 return PFS.FinishFunction();
4656 /// ::= LabelStr? Instruction*
4657 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4658 // If this basic block starts out with a name, remember it.
4660 LocTy NameLoc = Lex.getLoc();
4661 if (Lex.getKind() == lltok::LabelStr) {
4662 Name = Lex.getStrVal();
4666 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4668 return Error(NameLoc,
4669 "unable to create block named '" + Name + "'");
4671 std::string NameStr;
4673 // Parse the instructions in this block until we get a terminator.
4676 // This instruction may have three possibilities for a name: a) none
4677 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4678 LocTy NameLoc = Lex.getLoc();
4682 if (Lex.getKind() == lltok::LocalVarID) {
4683 NameID = Lex.getUIntVal();
4685 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4687 } else if (Lex.getKind() == lltok::LocalVar) {
4688 NameStr = Lex.getStrVal();
4690 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4694 switch (ParseInstruction(Inst, BB, PFS)) {
4695 default: llvm_unreachable("Unknown ParseInstruction result!");
4696 case InstError: return true;
4698 BB->getInstList().push_back(Inst);
4700 // With a normal result, we check to see if the instruction is followed by
4701 // a comma and metadata.
4702 if (EatIfPresent(lltok::comma))
4703 if (ParseInstructionMetadata(*Inst))
4706 case InstExtraComma:
4707 BB->getInstList().push_back(Inst);
4709 // If the instruction parser ate an extra comma at the end of it, it
4710 // *must* be followed by metadata.
4711 if (ParseInstructionMetadata(*Inst))
4716 // Set the name on the instruction.
4717 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4718 } while (!isa<TerminatorInst>(Inst));
4723 //===----------------------------------------------------------------------===//
4724 // Instruction Parsing.
4725 //===----------------------------------------------------------------------===//
4727 /// ParseInstruction - Parse one of the many different instructions.
4729 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4730 PerFunctionState &PFS) {
4731 lltok::Kind Token = Lex.getKind();
4732 if (Token == lltok::Eof)
4733 return TokError("found end of file when expecting more instructions");
4734 LocTy Loc = Lex.getLoc();
4735 unsigned KeywordVal = Lex.getUIntVal();
4736 Lex.Lex(); // Eat the keyword.
4739 default: return Error(Loc, "expected instruction opcode");
4740 // Terminator Instructions.
4741 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4742 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4743 case lltok::kw_br: return ParseBr(Inst, PFS);
4744 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4745 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4746 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4747 case lltok::kw_resume: return ParseResume(Inst, PFS);
4748 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4749 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4750 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4751 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4752 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4753 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4754 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4755 // Binary Operators.
4759 case lltok::kw_shl: {
4760 bool NUW = EatIfPresent(lltok::kw_nuw);
4761 bool NSW = EatIfPresent(lltok::kw_nsw);
4762 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4764 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4766 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4767 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4770 case lltok::kw_fadd:
4771 case lltok::kw_fsub:
4772 case lltok::kw_fmul:
4773 case lltok::kw_fdiv:
4774 case lltok::kw_frem: {
4775 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4776 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4780 Inst->setFastMathFlags(FMF);
4784 case lltok::kw_sdiv:
4785 case lltok::kw_udiv:
4786 case lltok::kw_lshr:
4787 case lltok::kw_ashr: {
4788 bool Exact = EatIfPresent(lltok::kw_exact);
4790 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4791 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4795 case lltok::kw_urem:
4796 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4799 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4800 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4801 case lltok::kw_fcmp: {
4802 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4803 int Res = ParseCompare(Inst, PFS, KeywordVal);
4807 Inst->setFastMathFlags(FMF);
4812 case lltok::kw_trunc:
4813 case lltok::kw_zext:
4814 case lltok::kw_sext:
4815 case lltok::kw_fptrunc:
4816 case lltok::kw_fpext:
4817 case lltok::kw_bitcast:
4818 case lltok::kw_addrspacecast:
4819 case lltok::kw_uitofp:
4820 case lltok::kw_sitofp:
4821 case lltok::kw_fptoui:
4822 case lltok::kw_fptosi:
4823 case lltok::kw_inttoptr:
4824 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4826 case lltok::kw_select: return ParseSelect(Inst, PFS);
4827 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4828 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4829 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4830 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4831 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4832 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4834 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4835 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4836 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4837 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
4839 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4840 case lltok::kw_load: return ParseLoad(Inst, PFS);
4841 case lltok::kw_store: return ParseStore(Inst, PFS);
4842 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4843 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4844 case lltok::kw_fence: return ParseFence(Inst, PFS);
4845 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4846 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4847 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4851 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4852 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4853 if (Opc == Instruction::FCmp) {
4854 switch (Lex.getKind()) {
4855 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4856 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4857 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4858 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4859 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4860 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4861 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4862 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4863 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4864 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4865 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4866 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4867 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4868 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4869 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4870 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4871 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4874 switch (Lex.getKind()) {
4875 default: return TokError("expected icmp predicate (e.g. 'eq')");
4876 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4877 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4878 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4879 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4880 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4881 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4882 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4883 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4884 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4885 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4892 //===----------------------------------------------------------------------===//
4893 // Terminator Instructions.
4894 //===----------------------------------------------------------------------===//
4896 /// ParseRet - Parse a return instruction.
4897 /// ::= 'ret' void (',' !dbg, !1)*
4898 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4899 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4900 PerFunctionState &PFS) {
4901 SMLoc TypeLoc = Lex.getLoc();
4903 if (ParseType(Ty, true /*void allowed*/)) return true;
4905 Type *ResType = PFS.getFunction().getReturnType();
4907 if (Ty->isVoidTy()) {
4908 if (!ResType->isVoidTy())
4909 return Error(TypeLoc, "value doesn't match function result type '" +
4910 getTypeString(ResType) + "'");
4912 Inst = ReturnInst::Create(Context);
4917 if (ParseValue(Ty, RV, PFS)) return true;
4919 if (ResType != RV->getType())
4920 return Error(TypeLoc, "value doesn't match function result type '" +
4921 getTypeString(ResType) + "'");
4923 Inst = ReturnInst::Create(Context, RV);
4929 /// ::= 'br' TypeAndValue
4930 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4931 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4934 BasicBlock *Op1, *Op2;
4935 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4937 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4938 Inst = BranchInst::Create(BB);
4942 if (Op0->getType() != Type::getInt1Ty(Context))
4943 return Error(Loc, "branch condition must have 'i1' type");
4945 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4946 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4947 ParseToken(lltok::comma, "expected ',' after true destination") ||
4948 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4951 Inst = BranchInst::Create(Op1, Op2, Op0);
4957 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4959 /// ::= (TypeAndValue ',' TypeAndValue)*
4960 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4961 LocTy CondLoc, BBLoc;
4963 BasicBlock *DefaultBB;
4964 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4965 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4966 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4967 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4970 if (!Cond->getType()->isIntegerTy())
4971 return Error(CondLoc, "switch condition must have integer type");
4973 // Parse the jump table pairs.
4974 SmallPtrSet<Value*, 32> SeenCases;
4975 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4976 while (Lex.getKind() != lltok::rsquare) {
4980 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4981 ParseToken(lltok::comma, "expected ',' after case value") ||
4982 ParseTypeAndBasicBlock(DestBB, PFS))
4985 if (!SeenCases.insert(Constant).second)
4986 return Error(CondLoc, "duplicate case value in switch");
4987 if (!isa<ConstantInt>(Constant))
4988 return Error(CondLoc, "case value is not a constant integer");
4990 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4993 Lex.Lex(); // Eat the ']'.
4995 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4996 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4997 SI->addCase(Table[i].first, Table[i].second);
5004 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5005 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5008 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5009 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5010 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5013 if (!Address->getType()->isPointerTy())
5014 return Error(AddrLoc, "indirectbr address must have pointer type");
5016 // Parse the destination list.
5017 SmallVector<BasicBlock*, 16> DestList;
5019 if (Lex.getKind() != lltok::rsquare) {
5021 if (ParseTypeAndBasicBlock(DestBB, PFS))
5023 DestList.push_back(DestBB);
5025 while (EatIfPresent(lltok::comma)) {
5026 if (ParseTypeAndBasicBlock(DestBB, PFS))
5028 DestList.push_back(DestBB);
5032 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5035 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5036 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5037 IBI->addDestination(DestList[i]);
5044 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5045 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5046 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5047 LocTy CallLoc = Lex.getLoc();
5048 AttrBuilder RetAttrs, FnAttrs;
5049 std::vector<unsigned> FwdRefAttrGrps;
5052 Type *RetType = nullptr;
5055 SmallVector<ParamInfo, 16> ArgList;
5056 SmallVector<OperandBundleDef, 2> BundleList;
5058 BasicBlock *NormalBB, *UnwindBB;
5059 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5060 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5061 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5062 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5064 ParseOptionalOperandBundles(BundleList, PFS) ||
5065 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5066 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5067 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5068 ParseTypeAndBasicBlock(UnwindBB, PFS))
5071 // If RetType is a non-function pointer type, then this is the short syntax
5072 // for the call, which means that RetType is just the return type. Infer the
5073 // rest of the function argument types from the arguments that are present.
5074 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5076 // Pull out the types of all of the arguments...
5077 std::vector<Type*> ParamTypes;
5078 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5079 ParamTypes.push_back(ArgList[i].V->getType());
5081 if (!FunctionType::isValidReturnType(RetType))
5082 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5084 Ty = FunctionType::get(RetType, ParamTypes, false);
5089 // Look up the callee.
5091 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5094 // Set up the Attribute for the function.
5095 SmallVector<AttributeSet, 8> Attrs;
5096 if (RetAttrs.hasAttributes())
5097 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5098 AttributeSet::ReturnIndex,
5101 SmallVector<Value*, 8> Args;
5103 // Loop through FunctionType's arguments and ensure they are specified
5104 // correctly. Also, gather any parameter attributes.
5105 FunctionType::param_iterator I = Ty->param_begin();
5106 FunctionType::param_iterator E = Ty->param_end();
5107 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5108 Type *ExpectedTy = nullptr;
5111 } else if (!Ty->isVarArg()) {
5112 return Error(ArgList[i].Loc, "too many arguments specified");
5115 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5116 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5117 getTypeString(ExpectedTy) + "'");
5118 Args.push_back(ArgList[i].V);
5119 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5120 AttrBuilder B(ArgList[i].Attrs, i + 1);
5121 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5126 return Error(CallLoc, "not enough parameters specified for call");
5128 if (FnAttrs.hasAttributes()) {
5129 if (FnAttrs.hasAlignmentAttr())
5130 return Error(CallLoc, "invoke instructions may not have an alignment");
5132 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5133 AttributeSet::FunctionIndex,
5137 // Finish off the Attribute and check them
5138 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5141 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5142 II->setCallingConv(CC);
5143 II->setAttributes(PAL);
5144 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5150 /// ::= 'resume' TypeAndValue
5151 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5152 Value *Exn; LocTy ExnLoc;
5153 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5156 ResumeInst *RI = ResumeInst::Create(Exn);
5161 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5162 PerFunctionState &PFS) {
5163 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5166 while (Lex.getKind() != lltok::rsquare) {
5167 // If this isn't the first argument, we need a comma.
5168 if (!Args.empty() &&
5169 ParseToken(lltok::comma, "expected ',' in argument list"))
5172 // Parse the argument.
5174 Type *ArgTy = nullptr;
5175 if (ParseType(ArgTy, ArgLoc))
5179 if (ArgTy->isMetadataTy()) {
5180 if (ParseMetadataAsValue(V, PFS))
5183 if (ParseValue(ArgTy, V, PFS))
5189 Lex.Lex(); // Lex the ']'.
5194 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5195 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5196 Value *CleanupPad = nullptr;
5198 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5201 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5204 BasicBlock *UnwindBB = nullptr;
5205 if (Lex.getKind() == lltok::kw_to) {
5207 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5210 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5215 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5220 /// ::= 'catchret' Value 'to' TypeAndValue
5221 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5222 Value *CatchPad = nullptr;
5224 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5228 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5229 ParseTypeAndBasicBlock(BB, PFS))
5232 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5237 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5238 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5239 SmallVector<Value *, 8> Args;
5240 if (ParseExceptionArgs(Args, PFS))
5243 BasicBlock *NormalBB, *UnwindBB;
5244 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5245 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5246 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5247 ParseTypeAndBasicBlock(UnwindBB, PFS))
5250 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5254 /// ParseTerminatePad
5255 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5256 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5257 SmallVector<Value *, 8> Args;
5258 if (ParseExceptionArgs(Args, PFS))
5261 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5264 BasicBlock *UnwindBB = nullptr;
5265 if (Lex.getKind() == lltok::kw_to) {
5267 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5270 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5275 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5280 /// ::= 'cleanuppad' ParamList
5281 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5282 SmallVector<Value *, 8> Args;
5283 if (ParseExceptionArgs(Args, PFS))
5286 Inst = CleanupPadInst::Create(Context, Args);
5290 /// ParseCatchEndPad
5291 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5292 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5293 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5296 BasicBlock *UnwindBB = nullptr;
5297 if (Lex.getKind() == lltok::kw_to) {
5299 if (Lex.getKind() == lltok::kw_caller) {
5305 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5310 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5314 /// ParseCatchEndPad
5315 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5316 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5317 Value *CleanupPad = nullptr;
5319 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5322 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5325 BasicBlock *UnwindBB = nullptr;
5326 if (Lex.getKind() == lltok::kw_to) {
5328 if (Lex.getKind() == lltok::kw_caller) {
5334 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5339 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5343 //===----------------------------------------------------------------------===//
5344 // Binary Operators.
5345 //===----------------------------------------------------------------------===//
5348 /// ::= ArithmeticOps TypeAndValue ',' Value
5350 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5351 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5352 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5353 unsigned Opc, unsigned OperandType) {
5354 LocTy Loc; Value *LHS, *RHS;
5355 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5356 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5357 ParseValue(LHS->getType(), RHS, PFS))
5361 switch (OperandType) {
5362 default: llvm_unreachable("Unknown operand type!");
5363 case 0: // int or FP.
5364 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5365 LHS->getType()->isFPOrFPVectorTy();
5367 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5368 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5372 return Error(Loc, "invalid operand type for instruction");
5374 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5379 /// ::= ArithmeticOps TypeAndValue ',' Value {
5380 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5382 LocTy Loc; Value *LHS, *RHS;
5383 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5384 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5385 ParseValue(LHS->getType(), RHS, PFS))
5388 if (!LHS->getType()->isIntOrIntVectorTy())
5389 return Error(Loc,"instruction requires integer or integer vector operands");
5391 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5397 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5398 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5399 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5401 // Parse the integer/fp comparison predicate.
5405 if (ParseCmpPredicate(Pred, Opc) ||
5406 ParseTypeAndValue(LHS, Loc, PFS) ||
5407 ParseToken(lltok::comma, "expected ',' after compare value") ||
5408 ParseValue(LHS->getType(), RHS, PFS))
5411 if (Opc == Instruction::FCmp) {
5412 if (!LHS->getType()->isFPOrFPVectorTy())
5413 return Error(Loc, "fcmp requires floating point operands");
5414 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5416 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5417 if (!LHS->getType()->isIntOrIntVectorTy() &&
5418 !LHS->getType()->getScalarType()->isPointerTy())
5419 return Error(Loc, "icmp requires integer operands");
5420 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5425 //===----------------------------------------------------------------------===//
5426 // Other Instructions.
5427 //===----------------------------------------------------------------------===//
5431 /// ::= CastOpc TypeAndValue 'to' Type
5432 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5436 Type *DestTy = nullptr;
5437 if (ParseTypeAndValue(Op, Loc, PFS) ||
5438 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5442 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5443 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5444 return Error(Loc, "invalid cast opcode for cast from '" +
5445 getTypeString(Op->getType()) + "' to '" +
5446 getTypeString(DestTy) + "'");
5448 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5453 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5454 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5456 Value *Op0, *Op1, *Op2;
5457 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5458 ParseToken(lltok::comma, "expected ',' after select condition") ||
5459 ParseTypeAndValue(Op1, PFS) ||
5460 ParseToken(lltok::comma, "expected ',' after select value") ||
5461 ParseTypeAndValue(Op2, PFS))
5464 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5465 return Error(Loc, Reason);
5467 Inst = SelectInst::Create(Op0, Op1, Op2);
5472 /// ::= 'va_arg' TypeAndValue ',' Type
5473 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5475 Type *EltTy = nullptr;
5477 if (ParseTypeAndValue(Op, PFS) ||
5478 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5479 ParseType(EltTy, TypeLoc))
5482 if (!EltTy->isFirstClassType())
5483 return Error(TypeLoc, "va_arg requires operand with first class type");
5485 Inst = new VAArgInst(Op, EltTy);
5489 /// ParseExtractElement
5490 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5491 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5494 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5495 ParseToken(lltok::comma, "expected ',' after extract value") ||
5496 ParseTypeAndValue(Op1, PFS))
5499 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5500 return Error(Loc, "invalid extractelement operands");
5502 Inst = ExtractElementInst::Create(Op0, Op1);
5506 /// ParseInsertElement
5507 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5508 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5510 Value *Op0, *Op1, *Op2;
5511 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5512 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5513 ParseTypeAndValue(Op1, PFS) ||
5514 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5515 ParseTypeAndValue(Op2, PFS))
5518 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5519 return Error(Loc, "invalid insertelement operands");
5521 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5525 /// ParseShuffleVector
5526 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5527 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5529 Value *Op0, *Op1, *Op2;
5530 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5531 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5532 ParseTypeAndValue(Op1, PFS) ||
5533 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5534 ParseTypeAndValue(Op2, PFS))
5537 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5538 return Error(Loc, "invalid shufflevector operands");
5540 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5545 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5546 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5547 Type *Ty = nullptr; LocTy TypeLoc;
5550 if (ParseType(Ty, TypeLoc) ||
5551 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5552 ParseValue(Ty, Op0, PFS) ||
5553 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5554 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5555 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5558 bool AteExtraComma = false;
5559 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5561 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5563 if (!EatIfPresent(lltok::comma))
5566 if (Lex.getKind() == lltok::MetadataVar) {
5567 AteExtraComma = true;
5571 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5572 ParseValue(Ty, Op0, PFS) ||
5573 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5574 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5575 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5579 if (!Ty->isFirstClassType())
5580 return Error(TypeLoc, "phi node must have first class type");
5582 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5583 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5584 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5586 return AteExtraComma ? InstExtraComma : InstNormal;
5590 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5592 /// ::= 'catch' TypeAndValue
5594 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5595 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5596 Type *Ty = nullptr; LocTy TyLoc;
5598 if (ParseType(Ty, TyLoc))
5601 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5602 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5604 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5605 LandingPadInst::ClauseType CT;
5606 if (EatIfPresent(lltok::kw_catch))
5607 CT = LandingPadInst::Catch;
5608 else if (EatIfPresent(lltok::kw_filter))
5609 CT = LandingPadInst::Filter;
5611 return TokError("expected 'catch' or 'filter' clause type");
5615 if (ParseTypeAndValue(V, VLoc, PFS))
5618 // A 'catch' type expects a non-array constant. A filter clause expects an
5620 if (CT == LandingPadInst::Catch) {
5621 if (isa<ArrayType>(V->getType()))
5622 Error(VLoc, "'catch' clause has an invalid type");
5624 if (!isa<ArrayType>(V->getType()))
5625 Error(VLoc, "'filter' clause has an invalid type");
5628 Constant *CV = dyn_cast<Constant>(V);
5630 return Error(VLoc, "clause argument must be a constant");
5634 Inst = LP.release();
5639 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5640 /// ParameterList OptionalAttrs
5641 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5642 /// ParameterList OptionalAttrs
5643 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5644 /// ParameterList OptionalAttrs
5645 /// ::= 'notail' 'call' OptionalCallingConv OptionalAttrs Type Value
5646 /// ParameterList OptionalAttrs
5647 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5648 CallInst::TailCallKind TCK) {
5649 AttrBuilder RetAttrs, FnAttrs;
5650 std::vector<unsigned> FwdRefAttrGrps;
5653 Type *RetType = nullptr;
5656 SmallVector<ParamInfo, 16> ArgList;
5657 SmallVector<OperandBundleDef, 2> BundleList;
5658 LocTy CallLoc = Lex.getLoc();
5660 if ((TCK != CallInst::TCK_None &&
5661 ParseToken(lltok::kw_call,
5662 "expected 'tail call', 'musttail call', or 'notail call'")) ||
5663 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5664 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5665 ParseValID(CalleeID) ||
5666 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5667 PFS.getFunction().isVarArg()) ||
5668 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5669 ParseOptionalOperandBundles(BundleList, PFS))
5672 // If RetType is a non-function pointer type, then this is the short syntax
5673 // for the call, which means that RetType is just the return type. Infer the
5674 // rest of the function argument types from the arguments that are present.
5675 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5677 // Pull out the types of all of the arguments...
5678 std::vector<Type*> ParamTypes;
5679 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5680 ParamTypes.push_back(ArgList[i].V->getType());
5682 if (!FunctionType::isValidReturnType(RetType))
5683 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5685 Ty = FunctionType::get(RetType, ParamTypes, false);
5690 // Look up the callee.
5692 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5695 // Set up the Attribute for the function.
5696 SmallVector<AttributeSet, 8> Attrs;
5697 if (RetAttrs.hasAttributes())
5698 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5699 AttributeSet::ReturnIndex,
5702 SmallVector<Value*, 8> Args;
5704 // Loop through FunctionType's arguments and ensure they are specified
5705 // correctly. Also, gather any parameter attributes.
5706 FunctionType::param_iterator I = Ty->param_begin();
5707 FunctionType::param_iterator E = Ty->param_end();
5708 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5709 Type *ExpectedTy = nullptr;
5712 } else if (!Ty->isVarArg()) {
5713 return Error(ArgList[i].Loc, "too many arguments specified");
5716 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5717 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5718 getTypeString(ExpectedTy) + "'");
5719 Args.push_back(ArgList[i].V);
5720 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5721 AttrBuilder B(ArgList[i].Attrs, i + 1);
5722 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5727 return Error(CallLoc, "not enough parameters specified for call");
5729 if (FnAttrs.hasAttributes()) {
5730 if (FnAttrs.hasAlignmentAttr())
5731 return Error(CallLoc, "call instructions may not have an alignment");
5733 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5734 AttributeSet::FunctionIndex,
5738 // Finish off the Attribute and check them
5739 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5741 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5742 CI->setTailCallKind(TCK);
5743 CI->setCallingConv(CC);
5744 CI->setAttributes(PAL);
5745 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5750 //===----------------------------------------------------------------------===//
5751 // Memory Instructions.
5752 //===----------------------------------------------------------------------===//
5755 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5756 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5757 Value *Size = nullptr;
5758 LocTy SizeLoc, TyLoc;
5759 unsigned Alignment = 0;
5762 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5764 if (ParseType(Ty, TyLoc)) return true;
5766 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5767 return Error(TyLoc, "invalid type for alloca");
5769 bool AteExtraComma = false;
5770 if (EatIfPresent(lltok::comma)) {
5771 if (Lex.getKind() == lltok::kw_align) {
5772 if (ParseOptionalAlignment(Alignment)) return true;
5773 } else if (Lex.getKind() == lltok::MetadataVar) {
5774 AteExtraComma = true;
5776 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5777 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5782 if (Size && !Size->getType()->isIntegerTy())
5783 return Error(SizeLoc, "element count must have integer type");
5785 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5786 AI->setUsedWithInAlloca(IsInAlloca);
5788 return AteExtraComma ? InstExtraComma : InstNormal;
5792 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5793 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5794 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5795 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5796 Value *Val; LocTy Loc;
5797 unsigned Alignment = 0;
5798 bool AteExtraComma = false;
5799 bool isAtomic = false;
5800 AtomicOrdering Ordering = NotAtomic;
5801 SynchronizationScope Scope = CrossThread;
5803 if (Lex.getKind() == lltok::kw_atomic) {
5808 bool isVolatile = false;
5809 if (Lex.getKind() == lltok::kw_volatile) {
5815 LocTy ExplicitTypeLoc = Lex.getLoc();
5816 if (ParseType(Ty) ||
5817 ParseToken(lltok::comma, "expected comma after load's type") ||
5818 ParseTypeAndValue(Val, Loc, PFS) ||
5819 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5820 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5823 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5824 return Error(Loc, "load operand must be a pointer to a first class type");
5825 if (isAtomic && !Alignment)
5826 return Error(Loc, "atomic load must have explicit non-zero alignment");
5827 if (Ordering == Release || Ordering == AcquireRelease)
5828 return Error(Loc, "atomic load cannot use Release ordering");
5830 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5831 return Error(ExplicitTypeLoc,
5832 "explicit pointee type doesn't match operand's pointee type");
5834 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5835 return AteExtraComma ? InstExtraComma : InstNormal;
5840 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5841 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5842 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5843 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5844 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5845 unsigned Alignment = 0;
5846 bool AteExtraComma = false;
5847 bool isAtomic = false;
5848 AtomicOrdering Ordering = NotAtomic;
5849 SynchronizationScope Scope = CrossThread;
5851 if (Lex.getKind() == lltok::kw_atomic) {
5856 bool isVolatile = false;
5857 if (Lex.getKind() == lltok::kw_volatile) {
5862 if (ParseTypeAndValue(Val, Loc, PFS) ||
5863 ParseToken(lltok::comma, "expected ',' after store operand") ||
5864 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5865 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5866 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5869 if (!Ptr->getType()->isPointerTy())
5870 return Error(PtrLoc, "store operand must be a pointer");
5871 if (!Val->getType()->isFirstClassType())
5872 return Error(Loc, "store operand must be a first class value");
5873 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5874 return Error(Loc, "stored value and pointer type do not match");
5875 if (isAtomic && !Alignment)
5876 return Error(Loc, "atomic store must have explicit non-zero alignment");
5877 if (Ordering == Acquire || Ordering == AcquireRelease)
5878 return Error(Loc, "atomic store cannot use Acquire ordering");
5880 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5881 return AteExtraComma ? InstExtraComma : InstNormal;
5885 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5886 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5887 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5888 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5889 bool AteExtraComma = false;
5890 AtomicOrdering SuccessOrdering = NotAtomic;
5891 AtomicOrdering FailureOrdering = NotAtomic;
5892 SynchronizationScope Scope = CrossThread;
5893 bool isVolatile = false;
5894 bool isWeak = false;
5896 if (EatIfPresent(lltok::kw_weak))
5899 if (EatIfPresent(lltok::kw_volatile))
5902 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5903 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5904 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5905 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5906 ParseTypeAndValue(New, NewLoc, PFS) ||
5907 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5908 ParseOrdering(FailureOrdering))
5911 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5912 return TokError("cmpxchg cannot be unordered");
5913 if (SuccessOrdering < FailureOrdering)
5914 return TokError("cmpxchg must be at least as ordered on success as failure");
5915 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5916 return TokError("cmpxchg failure ordering cannot include release semantics");
5917 if (!Ptr->getType()->isPointerTy())
5918 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5919 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5920 return Error(CmpLoc, "compare value and pointer type do not match");
5921 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5922 return Error(NewLoc, "new value and pointer type do not match");
5923 if (!New->getType()->isIntegerTy())
5924 return Error(NewLoc, "cmpxchg operand must be an integer");
5925 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5926 if (Size < 8 || (Size & (Size - 1)))
5927 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5930 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5931 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5932 CXI->setVolatile(isVolatile);
5933 CXI->setWeak(isWeak);
5935 return AteExtraComma ? InstExtraComma : InstNormal;
5939 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5940 /// 'singlethread'? AtomicOrdering
5941 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5942 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5943 bool AteExtraComma = false;
5944 AtomicOrdering Ordering = NotAtomic;
5945 SynchronizationScope Scope = CrossThread;
5946 bool isVolatile = false;
5947 AtomicRMWInst::BinOp Operation;
5949 if (EatIfPresent(lltok::kw_volatile))
5952 switch (Lex.getKind()) {
5953 default: return TokError("expected binary operation in atomicrmw");
5954 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5955 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5956 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5957 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5958 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5959 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5960 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5961 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5962 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5963 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5964 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5966 Lex.Lex(); // Eat the operation.
5968 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5969 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5970 ParseTypeAndValue(Val, ValLoc, PFS) ||
5971 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5974 if (Ordering == Unordered)
5975 return TokError("atomicrmw cannot be unordered");
5976 if (!Ptr->getType()->isPointerTy())
5977 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5978 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5979 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5980 if (!Val->getType()->isIntegerTy())
5981 return Error(ValLoc, "atomicrmw operand must be an integer");
5982 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5983 if (Size < 8 || (Size & (Size - 1)))
5984 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5987 AtomicRMWInst *RMWI =
5988 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5989 RMWI->setVolatile(isVolatile);
5991 return AteExtraComma ? InstExtraComma : InstNormal;
5995 /// ::= 'fence' 'singlethread'? AtomicOrdering
5996 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5997 AtomicOrdering Ordering = NotAtomic;
5998 SynchronizationScope Scope = CrossThread;
5999 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6002 if (Ordering == Unordered)
6003 return TokError("fence cannot be unordered");
6004 if (Ordering == Monotonic)
6005 return TokError("fence cannot be monotonic");
6007 Inst = new FenceInst(Context, Ordering, Scope);
6011 /// ParseGetElementPtr
6012 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6013 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6014 Value *Ptr = nullptr;
6015 Value *Val = nullptr;
6018 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6021 LocTy ExplicitTypeLoc = Lex.getLoc();
6022 if (ParseType(Ty) ||
6023 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6024 ParseTypeAndValue(Ptr, Loc, PFS))
6027 Type *BaseType = Ptr->getType();
6028 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6029 if (!BasePointerType)
6030 return Error(Loc, "base of getelementptr must be a pointer");
6032 if (Ty != BasePointerType->getElementType())
6033 return Error(ExplicitTypeLoc,
6034 "explicit pointee type doesn't match operand's pointee type");
6036 SmallVector<Value*, 16> Indices;
6037 bool AteExtraComma = false;
6038 // GEP returns a vector of pointers if at least one of parameters is a vector.
6039 // All vector parameters should have the same vector width.
6040 unsigned GEPWidth = BaseType->isVectorTy() ?
6041 BaseType->getVectorNumElements() : 0;
6043 while (EatIfPresent(lltok::comma)) {
6044 if (Lex.getKind() == lltok::MetadataVar) {
6045 AteExtraComma = true;
6048 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6049 if (!Val->getType()->getScalarType()->isIntegerTy())
6050 return Error(EltLoc, "getelementptr index must be an integer");
6052 if (Val->getType()->isVectorTy()) {
6053 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6054 if (GEPWidth && GEPWidth != ValNumEl)
6055 return Error(EltLoc,
6056 "getelementptr vector index has a wrong number of elements");
6057 GEPWidth = ValNumEl;
6059 Indices.push_back(Val);
6062 SmallPtrSet<Type*, 4> Visited;
6063 if (!Indices.empty() && !Ty->isSized(&Visited))
6064 return Error(Loc, "base element of getelementptr must be sized");
6066 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6067 return Error(Loc, "invalid getelementptr indices");
6068 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6070 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6071 return AteExtraComma ? InstExtraComma : InstNormal;
6074 /// ParseExtractValue
6075 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6076 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6077 Value *Val; LocTy Loc;
6078 SmallVector<unsigned, 4> Indices;
6080 if (ParseTypeAndValue(Val, Loc, PFS) ||
6081 ParseIndexList(Indices, AteExtraComma))
6084 if (!Val->getType()->isAggregateType())
6085 return Error(Loc, "extractvalue operand must be aggregate type");
6087 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6088 return Error(Loc, "invalid indices for extractvalue");
6089 Inst = ExtractValueInst::Create(Val, Indices);
6090 return AteExtraComma ? InstExtraComma : InstNormal;
6093 /// ParseInsertValue
6094 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6095 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6096 Value *Val0, *Val1; LocTy Loc0, Loc1;
6097 SmallVector<unsigned, 4> Indices;
6099 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6100 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6101 ParseTypeAndValue(Val1, Loc1, PFS) ||
6102 ParseIndexList(Indices, AteExtraComma))
6105 if (!Val0->getType()->isAggregateType())
6106 return Error(Loc0, "insertvalue operand must be aggregate type");
6108 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6110 return Error(Loc0, "invalid indices for insertvalue");
6111 if (IndexedType != Val1->getType())
6112 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6113 getTypeString(Val1->getType()) + "' instead of '" +
6114 getTypeString(IndexedType) + "'");
6115 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6116 return AteExtraComma ? InstExtraComma : InstNormal;
6119 //===----------------------------------------------------------------------===//
6120 // Embedded metadata.
6121 //===----------------------------------------------------------------------===//
6123 /// ParseMDNodeVector
6124 /// ::= { Element (',' Element)* }
6126 /// ::= 'null' | TypeAndValue
6127 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6128 if (ParseToken(lltok::lbrace, "expected '{' here"))
6131 // Check for an empty list.
6132 if (EatIfPresent(lltok::rbrace))
6136 // Null is a special case since it is typeless.
6137 if (EatIfPresent(lltok::kw_null)) {
6138 Elts.push_back(nullptr);
6143 if (ParseMetadata(MD, nullptr))
6146 } while (EatIfPresent(lltok::comma));
6148 return ParseToken(lltok::rbrace, "expected end of metadata node");
6151 //===----------------------------------------------------------------------===//
6152 // Use-list order directives.
6153 //===----------------------------------------------------------------------===//
6154 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6157 return Error(Loc, "value has no uses");
6159 unsigned NumUses = 0;
6160 SmallDenseMap<const Use *, unsigned, 16> Order;
6161 for (const Use &U : V->uses()) {
6162 if (++NumUses > Indexes.size())
6164 Order[&U] = Indexes[NumUses - 1];
6167 return Error(Loc, "value only has one use");
6168 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6169 return Error(Loc, "wrong number of indexes, expected " +
6170 Twine(std::distance(V->use_begin(), V->use_end())));
6172 V->sortUseList([&](const Use &L, const Use &R) {
6173 return Order.lookup(&L) < Order.lookup(&R);
6178 /// ParseUseListOrderIndexes
6179 /// ::= '{' uint32 (',' uint32)+ '}'
6180 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6181 SMLoc Loc = Lex.getLoc();
6182 if (ParseToken(lltok::lbrace, "expected '{' here"))
6184 if (Lex.getKind() == lltok::rbrace)
6185 return Lex.Error("expected non-empty list of uselistorder indexes");
6187 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6188 // indexes should be distinct numbers in the range [0, size-1], and should
6190 unsigned Offset = 0;
6192 bool IsOrdered = true;
6193 assert(Indexes.empty() && "Expected empty order vector");
6196 if (ParseUInt32(Index))
6199 // Update consistency checks.
6200 Offset += Index - Indexes.size();
6201 Max = std::max(Max, Index);
6202 IsOrdered &= Index == Indexes.size();
6204 Indexes.push_back(Index);
6205 } while (EatIfPresent(lltok::comma));
6207 if (ParseToken(lltok::rbrace, "expected '}' here"))
6210 if (Indexes.size() < 2)
6211 return Error(Loc, "expected >= 2 uselistorder indexes");
6212 if (Offset != 0 || Max >= Indexes.size())
6213 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6215 return Error(Loc, "expected uselistorder indexes to change the order");
6220 /// ParseUseListOrder
6221 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6222 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6223 SMLoc Loc = Lex.getLoc();
6224 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6228 SmallVector<unsigned, 16> Indexes;
6229 if (ParseTypeAndValue(V, PFS) ||
6230 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6231 ParseUseListOrderIndexes(Indexes))
6234 return sortUseListOrder(V, Indexes, Loc);
6237 /// ParseUseListOrderBB
6238 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6239 bool LLParser::ParseUseListOrderBB() {
6240 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6241 SMLoc Loc = Lex.getLoc();
6245 SmallVector<unsigned, 16> Indexes;
6246 if (ParseValID(Fn) ||
6247 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6248 ParseValID(Label) ||
6249 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6250 ParseUseListOrderIndexes(Indexes))
6253 // Check the function.
6255 if (Fn.Kind == ValID::t_GlobalName)
6256 GV = M->getNamedValue(Fn.StrVal);
6257 else if (Fn.Kind == ValID::t_GlobalID)
6258 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6260 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6262 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6263 auto *F = dyn_cast<Function>(GV);
6265 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6266 if (F->isDeclaration())
6267 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6269 // Check the basic block.
6270 if (Label.Kind == ValID::t_LocalID)
6271 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6272 if (Label.Kind != ValID::t_LocalName)
6273 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6274 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6276 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6277 if (!isa<BasicBlock>(V))
6278 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6280 return sortUseListOrder(V, Indexes, Loc);