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 BundleList.emplace_back();
1976 auto &OBI = BundleList.back();
1978 OBI.Tag = std::move(Tag);
1980 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1983 while (Lex.getKind() != lltok::rparen) {
1984 // If this isn't the first input, we need a comma.
1985 if (!OBI.Inputs.empty() &&
1986 ParseToken(lltok::comma, "expected ',' in input list"))
1990 Value *Input = nullptr;
1991 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
1993 OBI.Inputs.push_back(Input);
1996 Lex.Lex(); // Lex the ')'.
1999 if (BundleList.empty())
2000 return Error(BeginLoc, "operand bundle set must not be empty");
2002 Lex.Lex(); // Lex the ']'.
2006 /// ParseArgumentList - Parse the argument list for a function type or function
2008 /// ::= '(' ArgTypeListI ')'
2012 /// ::= ArgTypeList ',' '...'
2013 /// ::= ArgType (',' ArgType)*
2015 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2018 assert(Lex.getKind() == lltok::lparen);
2019 Lex.Lex(); // eat the (.
2021 if (Lex.getKind() == lltok::rparen) {
2023 } else if (Lex.getKind() == lltok::dotdotdot) {
2027 LocTy TypeLoc = Lex.getLoc();
2028 Type *ArgTy = nullptr;
2032 if (ParseType(ArgTy) ||
2033 ParseOptionalParamAttrs(Attrs)) return true;
2035 if (ArgTy->isVoidTy())
2036 return Error(TypeLoc, "argument can not have void type");
2038 if (Lex.getKind() == lltok::LocalVar) {
2039 Name = Lex.getStrVal();
2043 if (!FunctionType::isValidArgumentType(ArgTy))
2044 return Error(TypeLoc, "invalid type for function argument");
2046 unsigned AttrIndex = 1;
2047 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2048 AttrIndex++, Attrs),
2051 while (EatIfPresent(lltok::comma)) {
2052 // Handle ... at end of arg list.
2053 if (EatIfPresent(lltok::dotdotdot)) {
2058 // Otherwise must be an argument type.
2059 TypeLoc = Lex.getLoc();
2060 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2062 if (ArgTy->isVoidTy())
2063 return Error(TypeLoc, "argument can not have void type");
2065 if (Lex.getKind() == lltok::LocalVar) {
2066 Name = Lex.getStrVal();
2072 if (!ArgTy->isFirstClassType())
2073 return Error(TypeLoc, "invalid type for function argument");
2075 ArgList.emplace_back(
2077 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2082 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2085 /// ParseFunctionType
2086 /// ::= Type ArgumentList OptionalAttrs
2087 bool LLParser::ParseFunctionType(Type *&Result) {
2088 assert(Lex.getKind() == lltok::lparen);
2090 if (!FunctionType::isValidReturnType(Result))
2091 return TokError("invalid function return type");
2093 SmallVector<ArgInfo, 8> ArgList;
2095 if (ParseArgumentList(ArgList, isVarArg))
2098 // Reject names on the arguments lists.
2099 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2100 if (!ArgList[i].Name.empty())
2101 return Error(ArgList[i].Loc, "argument name invalid in function type");
2102 if (ArgList[i].Attrs.hasAttributes(i + 1))
2103 return Error(ArgList[i].Loc,
2104 "argument attributes invalid in function type");
2107 SmallVector<Type*, 16> ArgListTy;
2108 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2109 ArgListTy.push_back(ArgList[i].Ty);
2111 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2115 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2117 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2118 SmallVector<Type*, 8> Elts;
2119 if (ParseStructBody(Elts)) return true;
2121 Result = StructType::get(Context, Elts, Packed);
2125 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2126 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2127 std::pair<Type*, LocTy> &Entry,
2129 // If the type was already defined, diagnose the redefinition.
2130 if (Entry.first && !Entry.second.isValid())
2131 return Error(TypeLoc, "redefinition of type");
2133 // If we have opaque, just return without filling in the definition for the
2134 // struct. This counts as a definition as far as the .ll file goes.
2135 if (EatIfPresent(lltok::kw_opaque)) {
2136 // This type is being defined, so clear the location to indicate this.
2137 Entry.second = SMLoc();
2139 // If this type number has never been uttered, create it.
2141 Entry.first = StructType::create(Context, Name);
2142 ResultTy = Entry.first;
2146 // If the type starts with '<', then it is either a packed struct or a vector.
2147 bool isPacked = EatIfPresent(lltok::less);
2149 // If we don't have a struct, then we have a random type alias, which we
2150 // accept for compatibility with old files. These types are not allowed to be
2151 // forward referenced and not allowed to be recursive.
2152 if (Lex.getKind() != lltok::lbrace) {
2154 return Error(TypeLoc, "forward references to non-struct type");
2158 return ParseArrayVectorType(ResultTy, true);
2159 return ParseType(ResultTy);
2162 // This type is being defined, so clear the location to indicate this.
2163 Entry.second = SMLoc();
2165 // If this type number has never been uttered, create it.
2167 Entry.first = StructType::create(Context, Name);
2169 StructType *STy = cast<StructType>(Entry.first);
2171 SmallVector<Type*, 8> Body;
2172 if (ParseStructBody(Body) ||
2173 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2176 STy->setBody(Body, isPacked);
2182 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2185 /// ::= '{' Type (',' Type)* '}'
2186 /// ::= '<' '{' '}' '>'
2187 /// ::= '<' '{' Type (',' Type)* '}' '>'
2188 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2189 assert(Lex.getKind() == lltok::lbrace);
2190 Lex.Lex(); // Consume the '{'
2192 // Handle the empty struct.
2193 if (EatIfPresent(lltok::rbrace))
2196 LocTy EltTyLoc = Lex.getLoc();
2198 if (ParseType(Ty)) return true;
2201 if (!StructType::isValidElementType(Ty))
2202 return Error(EltTyLoc, "invalid element type for struct");
2204 while (EatIfPresent(lltok::comma)) {
2205 EltTyLoc = Lex.getLoc();
2206 if (ParseType(Ty)) return true;
2208 if (!StructType::isValidElementType(Ty))
2209 return Error(EltTyLoc, "invalid element type for struct");
2214 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2217 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2218 /// token has already been consumed.
2220 /// ::= '[' APSINTVAL 'x' Types ']'
2221 /// ::= '<' APSINTVAL 'x' Types '>'
2222 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2223 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2224 Lex.getAPSIntVal().getBitWidth() > 64)
2225 return TokError("expected number in address space");
2227 LocTy SizeLoc = Lex.getLoc();
2228 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2231 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2234 LocTy TypeLoc = Lex.getLoc();
2235 Type *EltTy = nullptr;
2236 if (ParseType(EltTy)) return true;
2238 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2239 "expected end of sequential type"))
2244 return Error(SizeLoc, "zero element vector is illegal");
2245 if ((unsigned)Size != Size)
2246 return Error(SizeLoc, "size too large for vector");
2247 if (!VectorType::isValidElementType(EltTy))
2248 return Error(TypeLoc, "invalid vector element type");
2249 Result = VectorType::get(EltTy, unsigned(Size));
2251 if (!ArrayType::isValidElementType(EltTy))
2252 return Error(TypeLoc, "invalid array element type");
2253 Result = ArrayType::get(EltTy, Size);
2258 //===----------------------------------------------------------------------===//
2259 // Function Semantic Analysis.
2260 //===----------------------------------------------------------------------===//
2262 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2264 : P(p), F(f), FunctionNumber(functionNumber) {
2266 // Insert unnamed arguments into the NumberedVals list.
2267 for (Argument &A : F.args())
2269 NumberedVals.push_back(&A);
2272 LLParser::PerFunctionState::~PerFunctionState() {
2273 // If there were any forward referenced non-basicblock values, delete them.
2275 for (const auto &P : ForwardRefVals) {
2276 if (isa<BasicBlock>(P.second.first))
2278 P.second.first->replaceAllUsesWith(
2279 UndefValue::get(P.second.first->getType()));
2280 delete P.second.first;
2283 for (const auto &P : ForwardRefValIDs) {
2284 if (isa<BasicBlock>(P.second.first))
2286 P.second.first->replaceAllUsesWith(
2287 UndefValue::get(P.second.first->getType()));
2288 delete P.second.first;
2292 bool LLParser::PerFunctionState::FinishFunction() {
2293 if (!ForwardRefVals.empty())
2294 return P.Error(ForwardRefVals.begin()->second.second,
2295 "use of undefined value '%" + ForwardRefVals.begin()->first +
2297 if (!ForwardRefValIDs.empty())
2298 return P.Error(ForwardRefValIDs.begin()->second.second,
2299 "use of undefined value '%" +
2300 Twine(ForwardRefValIDs.begin()->first) + "'");
2305 /// GetVal - Get a value with the specified name or ID, creating a
2306 /// forward reference record if needed. This can return null if the value
2307 /// exists but does not have the right type.
2308 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2309 LocTy Loc, OperatorConstraint OC) {
2310 // Look this name up in the normal function symbol table.
2311 Value *Val = F.getValueSymbolTable().lookup(Name);
2313 // If this is a forward reference for the value, see if we already created a
2314 // forward ref record.
2316 auto I = ForwardRefVals.find(Name);
2317 if (I != ForwardRefVals.end())
2318 Val = I->second.first;
2321 // If we have the value in the symbol table or fwd-ref table, return it.
2323 // Check operator constraints.
2329 if (!isa<CatchPadInst>(Val)) {
2330 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2335 if (!isa<CleanupPadInst>(Val)) {
2336 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2341 if (Val->getType() == Ty) return Val;
2342 if (Ty->isLabelTy())
2343 P.Error(Loc, "'%" + Name + "' is not a basic block");
2345 P.Error(Loc, "'%" + Name + "' defined with type '" +
2346 getTypeString(Val->getType()) + "'");
2350 // Don't make placeholders with invalid type.
2351 if (!Ty->isFirstClassType()) {
2352 P.Error(Loc, "invalid use of a non-first-class type");
2356 // Otherwise, create a new forward reference for this value and remember it.
2358 if (Ty->isLabelTy()) {
2360 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2362 FwdVal = new Argument(Ty, Name);
2366 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2370 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2373 llvm_unreachable("unexpected constraint");
2377 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2381 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2382 OperatorConstraint OC) {
2383 // Look this name up in the normal function symbol table.
2384 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2386 // If this is a forward reference for the value, see if we already created a
2387 // forward ref record.
2389 auto I = ForwardRefValIDs.find(ID);
2390 if (I != ForwardRefValIDs.end())
2391 Val = I->second.first;
2394 // If we have the value in the symbol table or fwd-ref table, return it.
2396 // Check operator constraint.
2402 if (!isa<CatchPadInst>(Val)) {
2403 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2408 if (!isa<CleanupPadInst>(Val)) {
2409 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2414 if (Val->getType() == Ty) return Val;
2415 if (Ty->isLabelTy())
2416 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2418 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2419 getTypeString(Val->getType()) + "'");
2423 if (!Ty->isFirstClassType()) {
2424 P.Error(Loc, "invalid use of a non-first-class type");
2428 // Otherwise, create a new forward reference for this value and remember it.
2430 if (Ty->isLabelTy()) {
2432 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2434 FwdVal = new Argument(Ty);
2438 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2441 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2444 llvm_unreachable("unexpected constraint");
2448 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2452 /// SetInstName - After an instruction is parsed and inserted into its
2453 /// basic block, this installs its name.
2454 bool LLParser::PerFunctionState::SetInstName(int NameID,
2455 const std::string &NameStr,
2456 LocTy NameLoc, Instruction *Inst) {
2457 // If this instruction has void type, it cannot have a name or ID specified.
2458 if (Inst->getType()->isVoidTy()) {
2459 if (NameID != -1 || !NameStr.empty())
2460 return P.Error(NameLoc, "instructions returning void cannot have a name");
2464 // If this was a numbered instruction, verify that the instruction is the
2465 // expected value and resolve any forward references.
2466 if (NameStr.empty()) {
2467 // If neither a name nor an ID was specified, just use the next ID.
2469 NameID = NumberedVals.size();
2471 if (unsigned(NameID) != NumberedVals.size())
2472 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2473 Twine(NumberedVals.size()) + "'");
2475 auto FI = ForwardRefValIDs.find(NameID);
2476 if (FI != ForwardRefValIDs.end()) {
2477 Value *Sentinel = FI->second.first;
2478 if (Sentinel->getType() != Inst->getType())
2479 return P.Error(NameLoc, "instruction forward referenced with type '" +
2480 getTypeString(FI->second.first->getType()) + "'");
2481 // Check operator constraints. We only put cleanuppads or catchpads in
2482 // the forward value map if the value is constrained to match.
2483 if (isa<CatchPadInst>(Sentinel)) {
2484 if (!isa<CatchPadInst>(Inst))
2485 return P.Error(FI->second.second,
2486 "'%" + Twine(NameID) + "' is not a catchpad");
2487 } else if (isa<CleanupPadInst>(Sentinel)) {
2488 if (!isa<CleanupPadInst>(Inst))
2489 return P.Error(FI->second.second,
2490 "'%" + Twine(NameID) + "' is not a cleanuppad");
2493 Sentinel->replaceAllUsesWith(Inst);
2495 ForwardRefValIDs.erase(FI);
2498 NumberedVals.push_back(Inst);
2502 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2503 auto FI = ForwardRefVals.find(NameStr);
2504 if (FI != ForwardRefVals.end()) {
2505 Value *Sentinel = FI->second.first;
2506 if (Sentinel->getType() != Inst->getType())
2507 return P.Error(NameLoc, "instruction forward referenced with type '" +
2508 getTypeString(FI->second.first->getType()) + "'");
2509 // Check operator constraints. We only put cleanuppads or catchpads in
2510 // the forward value map if the value is constrained to match.
2511 if (isa<CatchPadInst>(Sentinel)) {
2512 if (!isa<CatchPadInst>(Inst))
2513 return P.Error(FI->second.second,
2514 "'%" + NameStr + "' is not a catchpad");
2515 } else if (isa<CleanupPadInst>(Sentinel)) {
2516 if (!isa<CleanupPadInst>(Inst))
2517 return P.Error(FI->second.second,
2518 "'%" + NameStr + "' is not a cleanuppad");
2521 Sentinel->replaceAllUsesWith(Inst);
2523 ForwardRefVals.erase(FI);
2526 // Set the name on the instruction.
2527 Inst->setName(NameStr);
2529 if (Inst->getName() != NameStr)
2530 return P.Error(NameLoc, "multiple definition of local value named '" +
2535 /// GetBB - Get a basic block with the specified name or ID, creating a
2536 /// forward reference record if needed.
2537 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2539 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2540 Type::getLabelTy(F.getContext()), Loc));
2543 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2544 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2545 Type::getLabelTy(F.getContext()), Loc));
2548 /// DefineBB - Define the specified basic block, which is either named or
2549 /// unnamed. If there is an error, this returns null otherwise it returns
2550 /// the block being defined.
2551 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2555 BB = GetBB(NumberedVals.size(), Loc);
2557 BB = GetBB(Name, Loc);
2558 if (!BB) return nullptr; // Already diagnosed error.
2560 // Move the block to the end of the function. Forward ref'd blocks are
2561 // inserted wherever they happen to be referenced.
2562 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2564 // Remove the block from forward ref sets.
2566 ForwardRefValIDs.erase(NumberedVals.size());
2567 NumberedVals.push_back(BB);
2569 // BB forward references are already in the function symbol table.
2570 ForwardRefVals.erase(Name);
2576 //===----------------------------------------------------------------------===//
2578 //===----------------------------------------------------------------------===//
2580 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2581 /// type implied. For example, if we parse "4" we don't know what integer type
2582 /// it has. The value will later be combined with its type and checked for
2583 /// sanity. PFS is used to convert function-local operands of metadata (since
2584 /// metadata operands are not just parsed here but also converted to values).
2585 /// PFS can be null when we are not parsing metadata values inside a function.
2586 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2587 ID.Loc = Lex.getLoc();
2588 switch (Lex.getKind()) {
2589 default: return TokError("expected value token");
2590 case lltok::GlobalID: // @42
2591 ID.UIntVal = Lex.getUIntVal();
2592 ID.Kind = ValID::t_GlobalID;
2594 case lltok::GlobalVar: // @foo
2595 ID.StrVal = Lex.getStrVal();
2596 ID.Kind = ValID::t_GlobalName;
2598 case lltok::LocalVarID: // %42
2599 ID.UIntVal = Lex.getUIntVal();
2600 ID.Kind = ValID::t_LocalID;
2602 case lltok::LocalVar: // %foo
2603 ID.StrVal = Lex.getStrVal();
2604 ID.Kind = ValID::t_LocalName;
2607 ID.APSIntVal = Lex.getAPSIntVal();
2608 ID.Kind = ValID::t_APSInt;
2610 case lltok::APFloat:
2611 ID.APFloatVal = Lex.getAPFloatVal();
2612 ID.Kind = ValID::t_APFloat;
2614 case lltok::kw_true:
2615 ID.ConstantVal = ConstantInt::getTrue(Context);
2616 ID.Kind = ValID::t_Constant;
2618 case lltok::kw_false:
2619 ID.ConstantVal = ConstantInt::getFalse(Context);
2620 ID.Kind = ValID::t_Constant;
2622 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2623 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2624 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2625 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2627 case lltok::lbrace: {
2628 // ValID ::= '{' ConstVector '}'
2630 SmallVector<Constant*, 16> Elts;
2631 if (ParseGlobalValueVector(Elts) ||
2632 ParseToken(lltok::rbrace, "expected end of struct constant"))
2635 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2636 ID.UIntVal = Elts.size();
2637 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2638 Elts.size() * sizeof(Elts[0]));
2639 ID.Kind = ValID::t_ConstantStruct;
2643 // ValID ::= '<' ConstVector '>' --> Vector.
2644 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2646 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2648 SmallVector<Constant*, 16> Elts;
2649 LocTy FirstEltLoc = Lex.getLoc();
2650 if (ParseGlobalValueVector(Elts) ||
2652 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2653 ParseToken(lltok::greater, "expected end of constant"))
2656 if (isPackedStruct) {
2657 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2658 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2659 Elts.size() * sizeof(Elts[0]));
2660 ID.UIntVal = Elts.size();
2661 ID.Kind = ValID::t_PackedConstantStruct;
2666 return Error(ID.Loc, "constant vector must not be empty");
2668 if (!Elts[0]->getType()->isIntegerTy() &&
2669 !Elts[0]->getType()->isFloatingPointTy() &&
2670 !Elts[0]->getType()->isPointerTy())
2671 return Error(FirstEltLoc,
2672 "vector elements must have integer, pointer or floating point type");
2674 // Verify that all the vector elements have the same type.
2675 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2676 if (Elts[i]->getType() != Elts[0]->getType())
2677 return Error(FirstEltLoc,
2678 "vector element #" + Twine(i) +
2679 " is not of type '" + getTypeString(Elts[0]->getType()));
2681 ID.ConstantVal = ConstantVector::get(Elts);
2682 ID.Kind = ValID::t_Constant;
2685 case lltok::lsquare: { // Array Constant
2687 SmallVector<Constant*, 16> Elts;
2688 LocTy FirstEltLoc = Lex.getLoc();
2689 if (ParseGlobalValueVector(Elts) ||
2690 ParseToken(lltok::rsquare, "expected end of array constant"))
2693 // Handle empty element.
2695 // Use undef instead of an array because it's inconvenient to determine
2696 // the element type at this point, there being no elements to examine.
2697 ID.Kind = ValID::t_EmptyArray;
2701 if (!Elts[0]->getType()->isFirstClassType())
2702 return Error(FirstEltLoc, "invalid array element type: " +
2703 getTypeString(Elts[0]->getType()));
2705 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2707 // Verify all elements are correct type!
2708 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2709 if (Elts[i]->getType() != Elts[0]->getType())
2710 return Error(FirstEltLoc,
2711 "array element #" + Twine(i) +
2712 " is not of type '" + getTypeString(Elts[0]->getType()));
2715 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2716 ID.Kind = ValID::t_Constant;
2719 case lltok::kw_c: // c "foo"
2721 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2723 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2724 ID.Kind = ValID::t_Constant;
2727 case lltok::kw_asm: {
2728 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2730 bool HasSideEffect, AlignStack, AsmDialect;
2732 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2733 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2734 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2735 ParseStringConstant(ID.StrVal) ||
2736 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2737 ParseToken(lltok::StringConstant, "expected constraint string"))
2739 ID.StrVal2 = Lex.getStrVal();
2740 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2741 (unsigned(AsmDialect)<<2);
2742 ID.Kind = ValID::t_InlineAsm;
2746 case lltok::kw_blockaddress: {
2747 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2752 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2754 ParseToken(lltok::comma, "expected comma in block address expression")||
2755 ParseValID(Label) ||
2756 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2759 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2760 return Error(Fn.Loc, "expected function name in blockaddress");
2761 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2762 return Error(Label.Loc, "expected basic block name in blockaddress");
2764 // Try to find the function (but skip it if it's forward-referenced).
2765 GlobalValue *GV = nullptr;
2766 if (Fn.Kind == ValID::t_GlobalID) {
2767 if (Fn.UIntVal < NumberedVals.size())
2768 GV = NumberedVals[Fn.UIntVal];
2769 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2770 GV = M->getNamedValue(Fn.StrVal);
2772 Function *F = nullptr;
2774 // Confirm that it's actually a function with a definition.
2775 if (!isa<Function>(GV))
2776 return Error(Fn.Loc, "expected function name in blockaddress");
2777 F = cast<Function>(GV);
2778 if (F->isDeclaration())
2779 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2783 // Make a global variable as a placeholder for this reference.
2784 GlobalValue *&FwdRef =
2785 ForwardRefBlockAddresses.insert(std::make_pair(
2787 std::map<ValID, GlobalValue *>()))
2788 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2791 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2792 GlobalValue::InternalLinkage, nullptr, "");
2793 ID.ConstantVal = FwdRef;
2794 ID.Kind = ValID::t_Constant;
2798 // We found the function; now find the basic block. Don't use PFS, since we
2799 // might be inside a constant expression.
2801 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2802 if (Label.Kind == ValID::t_LocalID)
2803 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2805 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2807 return Error(Label.Loc, "referenced value is not a basic block");
2809 if (Label.Kind == ValID::t_LocalID)
2810 return Error(Label.Loc, "cannot take address of numeric label after "
2811 "the function is defined");
2812 BB = dyn_cast_or_null<BasicBlock>(
2813 F->getValueSymbolTable().lookup(Label.StrVal));
2815 return Error(Label.Loc, "referenced value is not a basic block");
2818 ID.ConstantVal = BlockAddress::get(F, BB);
2819 ID.Kind = ValID::t_Constant;
2823 case lltok::kw_trunc:
2824 case lltok::kw_zext:
2825 case lltok::kw_sext:
2826 case lltok::kw_fptrunc:
2827 case lltok::kw_fpext:
2828 case lltok::kw_bitcast:
2829 case lltok::kw_addrspacecast:
2830 case lltok::kw_uitofp:
2831 case lltok::kw_sitofp:
2832 case lltok::kw_fptoui:
2833 case lltok::kw_fptosi:
2834 case lltok::kw_inttoptr:
2835 case lltok::kw_ptrtoint: {
2836 unsigned Opc = Lex.getUIntVal();
2837 Type *DestTy = nullptr;
2840 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2841 ParseGlobalTypeAndValue(SrcVal) ||
2842 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2843 ParseType(DestTy) ||
2844 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2846 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2847 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2848 getTypeString(SrcVal->getType()) + "' to '" +
2849 getTypeString(DestTy) + "'");
2850 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2852 ID.Kind = ValID::t_Constant;
2855 case lltok::kw_extractvalue: {
2858 SmallVector<unsigned, 4> Indices;
2859 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2860 ParseGlobalTypeAndValue(Val) ||
2861 ParseIndexList(Indices) ||
2862 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2865 if (!Val->getType()->isAggregateType())
2866 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2867 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2868 return Error(ID.Loc, "invalid indices for extractvalue");
2869 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2870 ID.Kind = ValID::t_Constant;
2873 case lltok::kw_insertvalue: {
2875 Constant *Val0, *Val1;
2876 SmallVector<unsigned, 4> Indices;
2877 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2878 ParseGlobalTypeAndValue(Val0) ||
2879 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2880 ParseGlobalTypeAndValue(Val1) ||
2881 ParseIndexList(Indices) ||
2882 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2884 if (!Val0->getType()->isAggregateType())
2885 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2887 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2889 return Error(ID.Loc, "invalid indices for insertvalue");
2890 if (IndexedType != Val1->getType())
2891 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2892 getTypeString(Val1->getType()) +
2893 "' instead of '" + getTypeString(IndexedType) +
2895 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2896 ID.Kind = ValID::t_Constant;
2899 case lltok::kw_icmp:
2900 case lltok::kw_fcmp: {
2901 unsigned PredVal, Opc = Lex.getUIntVal();
2902 Constant *Val0, *Val1;
2904 if (ParseCmpPredicate(PredVal, Opc) ||
2905 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2906 ParseGlobalTypeAndValue(Val0) ||
2907 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2908 ParseGlobalTypeAndValue(Val1) ||
2909 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2912 if (Val0->getType() != Val1->getType())
2913 return Error(ID.Loc, "compare operands must have the same type");
2915 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2917 if (Opc == Instruction::FCmp) {
2918 if (!Val0->getType()->isFPOrFPVectorTy())
2919 return Error(ID.Loc, "fcmp requires floating point operands");
2920 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2922 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2923 if (!Val0->getType()->isIntOrIntVectorTy() &&
2924 !Val0->getType()->getScalarType()->isPointerTy())
2925 return Error(ID.Loc, "icmp requires pointer or integer operands");
2926 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2928 ID.Kind = ValID::t_Constant;
2932 // Binary Operators.
2934 case lltok::kw_fadd:
2936 case lltok::kw_fsub:
2938 case lltok::kw_fmul:
2939 case lltok::kw_udiv:
2940 case lltok::kw_sdiv:
2941 case lltok::kw_fdiv:
2942 case lltok::kw_urem:
2943 case lltok::kw_srem:
2944 case lltok::kw_frem:
2946 case lltok::kw_lshr:
2947 case lltok::kw_ashr: {
2951 unsigned Opc = Lex.getUIntVal();
2952 Constant *Val0, *Val1;
2954 LocTy ModifierLoc = Lex.getLoc();
2955 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2956 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2957 if (EatIfPresent(lltok::kw_nuw))
2959 if (EatIfPresent(lltok::kw_nsw)) {
2961 if (EatIfPresent(lltok::kw_nuw))
2964 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2965 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2966 if (EatIfPresent(lltok::kw_exact))
2969 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2970 ParseGlobalTypeAndValue(Val0) ||
2971 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2972 ParseGlobalTypeAndValue(Val1) ||
2973 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2975 if (Val0->getType() != Val1->getType())
2976 return Error(ID.Loc, "operands of constexpr must have same type");
2977 if (!Val0->getType()->isIntOrIntVectorTy()) {
2979 return Error(ModifierLoc, "nuw only applies to integer operations");
2981 return Error(ModifierLoc, "nsw only applies to integer operations");
2983 // Check that the type is valid for the operator.
2985 case Instruction::Add:
2986 case Instruction::Sub:
2987 case Instruction::Mul:
2988 case Instruction::UDiv:
2989 case Instruction::SDiv:
2990 case Instruction::URem:
2991 case Instruction::SRem:
2992 case Instruction::Shl:
2993 case Instruction::AShr:
2994 case Instruction::LShr:
2995 if (!Val0->getType()->isIntOrIntVectorTy())
2996 return Error(ID.Loc, "constexpr requires integer operands");
2998 case Instruction::FAdd:
2999 case Instruction::FSub:
3000 case Instruction::FMul:
3001 case Instruction::FDiv:
3002 case Instruction::FRem:
3003 if (!Val0->getType()->isFPOrFPVectorTy())
3004 return Error(ID.Loc, "constexpr requires fp operands");
3006 default: llvm_unreachable("Unknown binary operator!");
3009 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3010 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3011 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3012 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3014 ID.Kind = ValID::t_Constant;
3018 // Logical Operations
3021 case lltok::kw_xor: {
3022 unsigned Opc = Lex.getUIntVal();
3023 Constant *Val0, *Val1;
3025 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3026 ParseGlobalTypeAndValue(Val0) ||
3027 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3028 ParseGlobalTypeAndValue(Val1) ||
3029 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3031 if (Val0->getType() != Val1->getType())
3032 return Error(ID.Loc, "operands of constexpr must have same type");
3033 if (!Val0->getType()->isIntOrIntVectorTy())
3034 return Error(ID.Loc,
3035 "constexpr requires integer or integer vector operands");
3036 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3037 ID.Kind = ValID::t_Constant;
3041 case lltok::kw_getelementptr:
3042 case lltok::kw_shufflevector:
3043 case lltok::kw_insertelement:
3044 case lltok::kw_extractelement:
3045 case lltok::kw_select: {
3046 unsigned Opc = Lex.getUIntVal();
3047 SmallVector<Constant*, 16> Elts;
3048 bool InBounds = false;
3052 if (Opc == Instruction::GetElementPtr)
3053 InBounds = EatIfPresent(lltok::kw_inbounds);
3055 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3058 LocTy ExplicitTypeLoc = Lex.getLoc();
3059 if (Opc == Instruction::GetElementPtr) {
3060 if (ParseType(Ty) ||
3061 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3065 if (ParseGlobalValueVector(Elts) ||
3066 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3069 if (Opc == Instruction::GetElementPtr) {
3070 if (Elts.size() == 0 ||
3071 !Elts[0]->getType()->getScalarType()->isPointerTy())
3072 return Error(ID.Loc, "base of getelementptr must be a pointer");
3074 Type *BaseType = Elts[0]->getType();
3075 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3076 if (Ty != BasePointerType->getElementType())
3079 "explicit pointee type doesn't match operand's pointee type");
3081 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3082 for (Constant *Val : Indices) {
3083 Type *ValTy = Val->getType();
3084 if (!ValTy->getScalarType()->isIntegerTy())
3085 return Error(ID.Loc, "getelementptr index must be an integer");
3086 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3087 return Error(ID.Loc, "getelementptr index type missmatch");
3088 if (ValTy->isVectorTy()) {
3089 unsigned ValNumEl = ValTy->getVectorNumElements();
3090 unsigned PtrNumEl = BaseType->getVectorNumElements();
3091 if (ValNumEl != PtrNumEl)
3094 "getelementptr vector index has a wrong number of elements");
3098 SmallPtrSet<Type*, 4> Visited;
3099 if (!Indices.empty() && !Ty->isSized(&Visited))
3100 return Error(ID.Loc, "base element of getelementptr must be sized");
3102 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3103 return Error(ID.Loc, "invalid getelementptr indices");
3105 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3106 } else if (Opc == Instruction::Select) {
3107 if (Elts.size() != 3)
3108 return Error(ID.Loc, "expected three operands to select");
3109 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3111 return Error(ID.Loc, Reason);
3112 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3113 } else if (Opc == Instruction::ShuffleVector) {
3114 if (Elts.size() != 3)
3115 return Error(ID.Loc, "expected three operands to shufflevector");
3116 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3117 return Error(ID.Loc, "invalid operands to shufflevector");
3119 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3120 } else if (Opc == Instruction::ExtractElement) {
3121 if (Elts.size() != 2)
3122 return Error(ID.Loc, "expected two operands to extractelement");
3123 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3124 return Error(ID.Loc, "invalid extractelement operands");
3125 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3127 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3128 if (Elts.size() != 3)
3129 return Error(ID.Loc, "expected three operands to insertelement");
3130 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3131 return Error(ID.Loc, "invalid insertelement operands");
3133 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3136 ID.Kind = ValID::t_Constant;
3145 /// ParseGlobalValue - Parse a global value with the specified type.
3146 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3150 bool Parsed = ParseValID(ID) ||
3151 ConvertValIDToValue(Ty, ID, V, nullptr);
3152 if (V && !(C = dyn_cast<Constant>(V)))
3153 return Error(ID.Loc, "global values must be constants");
3157 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3159 return ParseType(Ty) ||
3160 ParseGlobalValue(Ty, V);
3163 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3166 LocTy KwLoc = Lex.getLoc();
3167 if (!EatIfPresent(lltok::kw_comdat))
3170 if (EatIfPresent(lltok::lparen)) {
3171 if (Lex.getKind() != lltok::ComdatVar)
3172 return TokError("expected comdat variable");
3173 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3175 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3178 if (GlobalName.empty())
3179 return TokError("comdat cannot be unnamed");
3180 C = getComdat(GlobalName, KwLoc);
3186 /// ParseGlobalValueVector
3188 /// ::= TypeAndValue (',' TypeAndValue)*
3189 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3191 if (Lex.getKind() == lltok::rbrace ||
3192 Lex.getKind() == lltok::rsquare ||
3193 Lex.getKind() == lltok::greater ||
3194 Lex.getKind() == lltok::rparen)
3198 if (ParseGlobalTypeAndValue(C)) return true;
3201 while (EatIfPresent(lltok::comma)) {
3202 if (ParseGlobalTypeAndValue(C)) return true;
3209 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3210 SmallVector<Metadata *, 16> Elts;
3211 if (ParseMDNodeVector(Elts))
3214 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3221 /// ::= !DILocation(...)
3222 bool LLParser::ParseMDNode(MDNode *&N) {
3223 if (Lex.getKind() == lltok::MetadataVar)
3224 return ParseSpecializedMDNode(N);
3226 return ParseToken(lltok::exclaim, "expected '!' here") ||
3230 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3232 if (Lex.getKind() == lltok::lbrace)
3233 return ParseMDTuple(N);
3236 return ParseMDNodeID(N);
3241 /// Structure to represent an optional metadata field.
3242 template <class FieldTy> struct MDFieldImpl {
3243 typedef MDFieldImpl ImplTy;
3247 void assign(FieldTy Val) {
3249 this->Val = std::move(Val);
3252 explicit MDFieldImpl(FieldTy Default)
3253 : Val(std::move(Default)), Seen(false) {}
3256 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3259 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3260 : ImplTy(Default), Max(Max) {}
3262 struct LineField : public MDUnsignedField {
3263 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3265 struct ColumnField : public MDUnsignedField {
3266 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3268 struct DwarfTagField : public MDUnsignedField {
3269 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3270 DwarfTagField(dwarf::Tag DefaultTag)
3271 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3273 struct DwarfAttEncodingField : public MDUnsignedField {
3274 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3276 struct DwarfVirtualityField : public MDUnsignedField {
3277 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3279 struct DwarfLangField : public MDUnsignedField {
3280 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3283 struct DIFlagField : public MDUnsignedField {
3284 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3287 struct MDSignedField : public MDFieldImpl<int64_t> {
3291 MDSignedField(int64_t Default = 0)
3292 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3293 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3294 : ImplTy(Default), Min(Min), Max(Max) {}
3297 struct MDBoolField : public MDFieldImpl<bool> {
3298 MDBoolField(bool Default = false) : ImplTy(Default) {}
3300 struct MDField : public MDFieldImpl<Metadata *> {
3303 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3305 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3306 MDConstant() : ImplTy(nullptr) {}
3308 struct MDStringField : public MDFieldImpl<MDString *> {
3310 MDStringField(bool AllowEmpty = true)
3311 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3313 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3314 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3322 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3323 MDUnsignedField &Result) {
3324 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3325 return TokError("expected unsigned integer");
3327 auto &U = Lex.getAPSIntVal();
3328 if (U.ugt(Result.Max))
3329 return TokError("value for '" + Name + "' too large, limit is " +
3331 Result.assign(U.getZExtValue());
3332 assert(Result.Val <= Result.Max && "Expected value in range");
3338 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3339 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3342 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3343 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3347 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3348 if (Lex.getKind() == lltok::APSInt)
3349 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3351 if (Lex.getKind() != lltok::DwarfTag)
3352 return TokError("expected DWARF tag");
3354 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3355 if (Tag == dwarf::DW_TAG_invalid)
3356 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3357 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3365 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3366 DwarfVirtualityField &Result) {
3367 if (Lex.getKind() == lltok::APSInt)
3368 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3370 if (Lex.getKind() != lltok::DwarfVirtuality)
3371 return TokError("expected DWARF virtuality code");
3373 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3375 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3376 Lex.getStrVal() + "'");
3377 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3378 Result.assign(Virtuality);
3384 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3385 if (Lex.getKind() == lltok::APSInt)
3386 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3388 if (Lex.getKind() != lltok::DwarfLang)
3389 return TokError("expected DWARF language");
3391 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3393 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3395 assert(Lang <= Result.Max && "Expected valid DWARF language");
3396 Result.assign(Lang);
3402 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3403 DwarfAttEncodingField &Result) {
3404 if (Lex.getKind() == lltok::APSInt)
3405 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3407 if (Lex.getKind() != lltok::DwarfAttEncoding)
3408 return TokError("expected DWARF type attribute encoding");
3410 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3412 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3413 Lex.getStrVal() + "'");
3414 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3415 Result.assign(Encoding);
3422 /// ::= DIFlagVector
3423 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3425 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3426 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3428 // Parser for a single flag.
3429 auto parseFlag = [&](unsigned &Val) {
3430 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3431 return ParseUInt32(Val);
3433 if (Lex.getKind() != lltok::DIFlag)
3434 return TokError("expected debug info flag");
3436 Val = DINode::getFlag(Lex.getStrVal());
3438 return TokError(Twine("invalid debug info flag flag '") +
3439 Lex.getStrVal() + "'");
3444 // Parse the flags and combine them together.
3445 unsigned Combined = 0;
3451 } while (EatIfPresent(lltok::bar));
3453 Result.assign(Combined);
3458 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3459 MDSignedField &Result) {
3460 if (Lex.getKind() != lltok::APSInt)
3461 return TokError("expected signed integer");
3463 auto &S = Lex.getAPSIntVal();
3465 return TokError("value for '" + Name + "' too small, limit is " +
3468 return TokError("value for '" + Name + "' too large, limit is " +
3470 Result.assign(S.getExtValue());
3471 assert(Result.Val >= Result.Min && "Expected value in range");
3472 assert(Result.Val <= Result.Max && "Expected value in range");
3478 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3479 switch (Lex.getKind()) {
3481 return TokError("expected 'true' or 'false'");
3482 case lltok::kw_true:
3483 Result.assign(true);
3485 case lltok::kw_false:
3486 Result.assign(false);
3494 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3495 if (Lex.getKind() == lltok::kw_null) {
3496 if (!Result.AllowNull)
3497 return TokError("'" + Name + "' cannot be null");
3499 Result.assign(nullptr);
3504 if (ParseMetadata(MD, nullptr))
3512 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3514 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3517 Result.assign(cast<ConstantAsMetadata>(MD));
3522 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3523 LocTy ValueLoc = Lex.getLoc();
3525 if (ParseStringConstant(S))
3528 if (!Result.AllowEmpty && S.empty())
3529 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3531 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3536 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3537 SmallVector<Metadata *, 4> MDs;
3538 if (ParseMDNodeVector(MDs))
3541 Result.assign(std::move(MDs));
3545 } // end namespace llvm
3547 template <class ParserTy>
3548 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3550 if (Lex.getKind() != lltok::LabelStr)
3551 return TokError("expected field label here");
3555 } while (EatIfPresent(lltok::comma));
3560 template <class ParserTy>
3561 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3562 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3565 if (ParseToken(lltok::lparen, "expected '(' here"))
3567 if (Lex.getKind() != lltok::rparen)
3568 if (ParseMDFieldsImplBody(parseField))
3571 ClosingLoc = Lex.getLoc();
3572 return ParseToken(lltok::rparen, "expected ')' here");
3575 template <class FieldTy>
3576 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3578 return TokError("field '" + Name + "' cannot be specified more than once");
3580 LocTy Loc = Lex.getLoc();
3582 return ParseMDField(Loc, Name, Result);
3585 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3586 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3588 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3589 if (Lex.getStrVal() == #CLASS) \
3590 return Parse##CLASS(N, IsDistinct);
3591 #include "llvm/IR/Metadata.def"
3593 return TokError("expected metadata type");
3596 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3597 #define NOP_FIELD(NAME, TYPE, INIT)
3598 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3600 return Error(ClosingLoc, "missing required field '" #NAME "'");
3601 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3602 if (Lex.getStrVal() == #NAME) \
3603 return ParseMDField(#NAME, NAME);
3604 #define PARSE_MD_FIELDS() \
3605 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3608 if (ParseMDFieldsImpl([&]() -> bool { \
3609 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3610 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3613 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3615 #define GET_OR_DISTINCT(CLASS, ARGS) \
3616 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3618 /// ParseDILocationFields:
3619 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3620 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3621 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3622 OPTIONAL(line, LineField, ); \
3623 OPTIONAL(column, ColumnField, ); \
3624 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3625 OPTIONAL(inlinedAt, MDField, );
3627 #undef VISIT_MD_FIELDS
3629 Result = GET_OR_DISTINCT(
3630 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3634 /// ParseGenericDINode:
3635 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3636 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3637 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3638 REQUIRED(tag, DwarfTagField, ); \
3639 OPTIONAL(header, MDStringField, ); \
3640 OPTIONAL(operands, MDFieldList, );
3642 #undef VISIT_MD_FIELDS
3644 Result = GET_OR_DISTINCT(GenericDINode,
3645 (Context, tag.Val, header.Val, operands.Val));
3649 /// ParseDISubrange:
3650 /// ::= !DISubrange(count: 30, lowerBound: 2)
3651 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3652 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3653 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3654 OPTIONAL(lowerBound, MDSignedField, );
3656 #undef VISIT_MD_FIELDS
3658 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3662 /// ParseDIEnumerator:
3663 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3664 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3665 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3666 REQUIRED(name, MDStringField, ); \
3667 REQUIRED(value, MDSignedField, );
3669 #undef VISIT_MD_FIELDS
3671 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3675 /// ParseDIBasicType:
3676 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3677 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3678 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3679 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3680 OPTIONAL(name, MDStringField, ); \
3681 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3682 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3683 OPTIONAL(encoding, DwarfAttEncodingField, );
3685 #undef VISIT_MD_FIELDS
3687 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3688 align.Val, encoding.Val));
3692 /// ParseDIDerivedType:
3693 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3694 /// line: 7, scope: !1, baseType: !2, size: 32,
3695 /// align: 32, offset: 0, flags: 0, extraData: !3)
3696 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3697 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3698 REQUIRED(tag, DwarfTagField, ); \
3699 OPTIONAL(name, MDStringField, ); \
3700 OPTIONAL(file, MDField, ); \
3701 OPTIONAL(line, LineField, ); \
3702 OPTIONAL(scope, MDField, ); \
3703 REQUIRED(baseType, MDField, ); \
3704 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3705 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3706 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3707 OPTIONAL(flags, DIFlagField, ); \
3708 OPTIONAL(extraData, MDField, );
3710 #undef VISIT_MD_FIELDS
3712 Result = GET_OR_DISTINCT(DIDerivedType,
3713 (Context, tag.Val, name.Val, file.Val, line.Val,
3714 scope.Val, baseType.Val, size.Val, align.Val,
3715 offset.Val, flags.Val, extraData.Val));
3719 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3720 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3721 REQUIRED(tag, DwarfTagField, ); \
3722 OPTIONAL(name, MDStringField, ); \
3723 OPTIONAL(file, MDField, ); \
3724 OPTIONAL(line, LineField, ); \
3725 OPTIONAL(scope, MDField, ); \
3726 OPTIONAL(baseType, MDField, ); \
3727 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3728 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3729 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3730 OPTIONAL(flags, DIFlagField, ); \
3731 OPTIONAL(elements, MDField, ); \
3732 OPTIONAL(runtimeLang, DwarfLangField, ); \
3733 OPTIONAL(vtableHolder, MDField, ); \
3734 OPTIONAL(templateParams, MDField, ); \
3735 OPTIONAL(identifier, MDStringField, );
3737 #undef VISIT_MD_FIELDS
3739 Result = GET_OR_DISTINCT(
3741 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3742 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3743 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3747 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3748 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3749 OPTIONAL(flags, DIFlagField, ); \
3750 REQUIRED(types, MDField, );
3752 #undef VISIT_MD_FIELDS
3754 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3758 /// ParseDIFileType:
3759 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3760 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3761 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3762 REQUIRED(filename, MDStringField, ); \
3763 REQUIRED(directory, MDStringField, );
3765 #undef VISIT_MD_FIELDS
3767 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3771 /// ParseDICompileUnit:
3772 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3773 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3774 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3775 /// enums: !1, retainedTypes: !2, subprograms: !3,
3776 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3777 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3779 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3781 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3782 REQUIRED(language, DwarfLangField, ); \
3783 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3784 OPTIONAL(producer, MDStringField, ); \
3785 OPTIONAL(isOptimized, MDBoolField, ); \
3786 OPTIONAL(flags, MDStringField, ); \
3787 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3788 OPTIONAL(splitDebugFilename, MDStringField, ); \
3789 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3790 OPTIONAL(enums, MDField, ); \
3791 OPTIONAL(retainedTypes, MDField, ); \
3792 OPTIONAL(subprograms, MDField, ); \
3793 OPTIONAL(globals, MDField, ); \
3794 OPTIONAL(imports, MDField, ); \
3795 OPTIONAL(dwoId, MDUnsignedField, );
3797 #undef VISIT_MD_FIELDS
3799 Result = DICompileUnit::getDistinct(
3800 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3801 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3802 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3806 /// ParseDISubprogram:
3807 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3808 /// file: !1, line: 7, type: !2, isLocal: false,
3809 /// isDefinition: true, scopeLine: 8, containingType: !3,
3810 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3811 /// virtualIndex: 10, flags: 11,
3812 /// isOptimized: false, templateParams: !4, declaration: !5,
3814 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3815 auto Loc = Lex.getLoc();
3816 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3817 OPTIONAL(scope, MDField, ); \
3818 OPTIONAL(name, MDStringField, ); \
3819 OPTIONAL(linkageName, MDStringField, ); \
3820 OPTIONAL(file, MDField, ); \
3821 OPTIONAL(line, LineField, ); \
3822 OPTIONAL(type, MDField, ); \
3823 OPTIONAL(isLocal, MDBoolField, ); \
3824 OPTIONAL(isDefinition, MDBoolField, (true)); \
3825 OPTIONAL(scopeLine, LineField, ); \
3826 OPTIONAL(containingType, MDField, ); \
3827 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3828 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3829 OPTIONAL(flags, DIFlagField, ); \
3830 OPTIONAL(isOptimized, MDBoolField, ); \
3831 OPTIONAL(templateParams, MDField, ); \
3832 OPTIONAL(declaration, MDField, ); \
3833 OPTIONAL(variables, MDField, );
3835 #undef VISIT_MD_FIELDS
3837 if (isDefinition.Val && !IsDistinct)
3840 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3842 Result = GET_OR_DISTINCT(
3844 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3845 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3846 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3847 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3851 /// ParseDILexicalBlock:
3852 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3853 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3854 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3855 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3856 OPTIONAL(file, MDField, ); \
3857 OPTIONAL(line, LineField, ); \
3858 OPTIONAL(column, ColumnField, );
3860 #undef VISIT_MD_FIELDS
3862 Result = GET_OR_DISTINCT(
3863 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3867 /// ParseDILexicalBlockFile:
3868 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3869 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3870 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3871 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3872 OPTIONAL(file, MDField, ); \
3873 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3875 #undef VISIT_MD_FIELDS
3877 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3878 (Context, scope.Val, file.Val, discriminator.Val));
3882 /// ParseDINamespace:
3883 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3884 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3885 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3886 REQUIRED(scope, MDField, ); \
3887 OPTIONAL(file, MDField, ); \
3888 OPTIONAL(name, MDStringField, ); \
3889 OPTIONAL(line, LineField, );
3891 #undef VISIT_MD_FIELDS
3893 Result = GET_OR_DISTINCT(DINamespace,
3894 (Context, scope.Val, file.Val, name.Val, line.Val));
3899 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3900 /// includePath: "/usr/include", isysroot: "/")
3901 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3902 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3903 REQUIRED(scope, MDField, ); \
3904 REQUIRED(name, MDStringField, ); \
3905 OPTIONAL(configMacros, MDStringField, ); \
3906 OPTIONAL(includePath, MDStringField, ); \
3907 OPTIONAL(isysroot, MDStringField, );
3909 #undef VISIT_MD_FIELDS
3911 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3912 configMacros.Val, includePath.Val, isysroot.Val));
3916 /// ParseDITemplateTypeParameter:
3917 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3918 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3919 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3920 OPTIONAL(name, MDStringField, ); \
3921 REQUIRED(type, MDField, );
3923 #undef VISIT_MD_FIELDS
3926 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3930 /// ParseDITemplateValueParameter:
3931 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3932 /// name: "V", type: !1, value: i32 7)
3933 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3934 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3935 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3936 OPTIONAL(name, MDStringField, ); \
3937 OPTIONAL(type, MDField, ); \
3938 REQUIRED(value, MDField, );
3940 #undef VISIT_MD_FIELDS
3942 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3943 (Context, tag.Val, name.Val, type.Val, value.Val));
3947 /// ParseDIGlobalVariable:
3948 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3949 /// file: !1, line: 7, type: !2, isLocal: false,
3950 /// isDefinition: true, variable: i32* @foo,
3951 /// declaration: !3)
3952 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3953 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3954 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3955 OPTIONAL(scope, MDField, ); \
3956 OPTIONAL(linkageName, MDStringField, ); \
3957 OPTIONAL(file, MDField, ); \
3958 OPTIONAL(line, LineField, ); \
3959 OPTIONAL(type, MDField, ); \
3960 OPTIONAL(isLocal, MDBoolField, ); \
3961 OPTIONAL(isDefinition, MDBoolField, (true)); \
3962 OPTIONAL(variable, MDConstant, ); \
3963 OPTIONAL(declaration, MDField, );
3965 #undef VISIT_MD_FIELDS
3967 Result = GET_OR_DISTINCT(DIGlobalVariable,
3968 (Context, scope.Val, name.Val, linkageName.Val,
3969 file.Val, line.Val, type.Val, isLocal.Val,
3970 isDefinition.Val, variable.Val, declaration.Val));
3974 /// ParseDILocalVariable:
3975 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3976 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3977 /// ::= !DILocalVariable(scope: !0, name: "foo",
3978 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3979 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3980 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3981 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3982 OPTIONAL(name, MDStringField, ); \
3983 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3984 OPTIONAL(file, MDField, ); \
3985 OPTIONAL(line, LineField, ); \
3986 OPTIONAL(type, MDField, ); \
3987 OPTIONAL(flags, DIFlagField, );
3989 #undef VISIT_MD_FIELDS
3991 Result = GET_OR_DISTINCT(DILocalVariable,
3992 (Context, scope.Val, name.Val, file.Val, line.Val,
3993 type.Val, arg.Val, flags.Val));
3997 /// ParseDIExpression:
3998 /// ::= !DIExpression(0, 7, -1)
3999 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4000 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4003 if (ParseToken(lltok::lparen, "expected '(' here"))
4006 SmallVector<uint64_t, 8> Elements;
4007 if (Lex.getKind() != lltok::rparen)
4009 if (Lex.getKind() == lltok::DwarfOp) {
4010 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4012 Elements.push_back(Op);
4015 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4018 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4019 return TokError("expected unsigned integer");
4021 auto &U = Lex.getAPSIntVal();
4022 if (U.ugt(UINT64_MAX))
4023 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4024 Elements.push_back(U.getZExtValue());
4026 } while (EatIfPresent(lltok::comma));
4028 if (ParseToken(lltok::rparen, "expected ')' here"))
4031 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4035 /// ParseDIObjCProperty:
4036 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4037 /// getter: "getFoo", attributes: 7, type: !2)
4038 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4039 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4040 OPTIONAL(name, MDStringField, ); \
4041 OPTIONAL(file, MDField, ); \
4042 OPTIONAL(line, LineField, ); \
4043 OPTIONAL(setter, MDStringField, ); \
4044 OPTIONAL(getter, MDStringField, ); \
4045 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4046 OPTIONAL(type, MDField, );
4048 #undef VISIT_MD_FIELDS
4050 Result = GET_OR_DISTINCT(DIObjCProperty,
4051 (Context, name.Val, file.Val, line.Val, setter.Val,
4052 getter.Val, attributes.Val, type.Val));
4056 /// ParseDIImportedEntity:
4057 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4058 /// line: 7, name: "foo")
4059 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4060 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4061 REQUIRED(tag, DwarfTagField, ); \
4062 REQUIRED(scope, MDField, ); \
4063 OPTIONAL(entity, MDField, ); \
4064 OPTIONAL(line, LineField, ); \
4065 OPTIONAL(name, MDStringField, );
4067 #undef VISIT_MD_FIELDS
4069 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4070 entity.Val, line.Val, name.Val));
4074 #undef PARSE_MD_FIELD
4076 #undef REQUIRE_FIELD
4077 #undef DECLARE_FIELD
4079 /// ParseMetadataAsValue
4080 /// ::= metadata i32 %local
4081 /// ::= metadata i32 @global
4082 /// ::= metadata i32 7
4084 /// ::= metadata !{...}
4085 /// ::= metadata !"string"
4086 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4087 // Note: the type 'metadata' has already been parsed.
4089 if (ParseMetadata(MD, &PFS))
4092 V = MetadataAsValue::get(Context, MD);
4096 /// ParseValueAsMetadata
4100 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4101 PerFunctionState *PFS) {
4104 if (ParseType(Ty, TypeMsg, Loc))
4106 if (Ty->isMetadataTy())
4107 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4110 if (ParseValue(Ty, V, PFS))
4113 MD = ValueAsMetadata::get(V);
4124 /// ::= !DILocation(...)
4125 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4126 if (Lex.getKind() == lltok::MetadataVar) {
4128 if (ParseSpecializedMDNode(N))
4136 if (Lex.getKind() != lltok::exclaim)
4137 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4140 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4144 // ::= '!' STRINGCONSTANT
4145 if (Lex.getKind() == lltok::StringConstant) {
4147 if (ParseMDString(S))
4157 if (ParseMDNodeTail(N))
4164 //===----------------------------------------------------------------------===//
4165 // Function Parsing.
4166 //===----------------------------------------------------------------------===//
4168 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4169 PerFunctionState *PFS,
4170 OperatorConstraint OC) {
4171 if (Ty->isFunctionTy())
4172 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4174 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4177 return Error(ID.Loc, "Catchpad value required in this position");
4179 return Error(ID.Loc, "Cleanuppad value required in this position");
4181 llvm_unreachable("Unexpected constraint kind");
4186 case ValID::t_LocalID:
4187 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4188 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4189 return V == nullptr;
4190 case ValID::t_LocalName:
4191 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4192 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4193 return V == nullptr;
4194 case ValID::t_InlineAsm: {
4195 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4196 return Error(ID.Loc, "invalid type for inline asm constraint string");
4197 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4198 (ID.UIntVal >> 1) & 1,
4199 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4202 case ValID::t_GlobalName:
4203 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4204 return V == nullptr;
4205 case ValID::t_GlobalID:
4206 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4207 return V == nullptr;
4208 case ValID::t_APSInt:
4209 if (!Ty->isIntegerTy())
4210 return Error(ID.Loc, "integer constant must have integer type");
4211 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4212 V = ConstantInt::get(Context, ID.APSIntVal);
4214 case ValID::t_APFloat:
4215 if (!Ty->isFloatingPointTy() ||
4216 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4217 return Error(ID.Loc, "floating point constant invalid for type");
4219 // The lexer has no type info, so builds all half, float, and double FP
4220 // constants as double. Fix this here. Long double does not need this.
4221 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4224 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4226 else if (Ty->isFloatTy())
4227 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4230 V = ConstantFP::get(Context, ID.APFloatVal);
4232 if (V->getType() != Ty)
4233 return Error(ID.Loc, "floating point constant does not have type '" +
4234 getTypeString(Ty) + "'");
4238 if (!Ty->isPointerTy())
4239 return Error(ID.Loc, "null must be a pointer type");
4240 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4242 case ValID::t_Undef:
4243 // FIXME: LabelTy should not be a first-class type.
4244 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4245 return Error(ID.Loc, "invalid type for undef constant");
4246 V = UndefValue::get(Ty);
4248 case ValID::t_EmptyArray:
4249 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4250 return Error(ID.Loc, "invalid empty array initializer");
4251 V = UndefValue::get(Ty);
4254 // FIXME: LabelTy should not be a first-class type.
4255 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4256 return Error(ID.Loc, "invalid type for null constant");
4257 V = Constant::getNullValue(Ty);
4260 if (!Ty->isTokenTy())
4261 return Error(ID.Loc, "invalid type for none constant");
4262 V = Constant::getNullValue(Ty);
4264 case ValID::t_Constant:
4265 if (ID.ConstantVal->getType() != Ty)
4266 return Error(ID.Loc, "constant expression type mismatch");
4270 case ValID::t_ConstantStruct:
4271 case ValID::t_PackedConstantStruct:
4272 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4273 if (ST->getNumElements() != ID.UIntVal)
4274 return Error(ID.Loc,
4275 "initializer with struct type has wrong # elements");
4276 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4277 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4279 // Verify that the elements are compatible with the structtype.
4280 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4281 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4282 return Error(ID.Loc, "element " + Twine(i) +
4283 " of struct initializer doesn't match struct element type");
4285 V = ConstantStruct::get(
4286 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4288 return Error(ID.Loc, "constant expression type mismatch");
4291 llvm_unreachable("Invalid ValID");
4294 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4297 auto Loc = Lex.getLoc();
4298 if (ParseValID(ID, /*PFS=*/nullptr))
4301 case ValID::t_APSInt:
4302 case ValID::t_APFloat:
4303 case ValID::t_Undef:
4304 case ValID::t_Constant:
4305 case ValID::t_ConstantStruct:
4306 case ValID::t_PackedConstantStruct: {
4308 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4310 assert(isa<Constant>(V) && "Expected a constant value");
4311 C = cast<Constant>(V);
4315 return Error(Loc, "expected a constant value");
4319 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4320 OperatorConstraint OC) {
4323 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4326 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4328 return ParseType(Ty) ||
4329 ParseValue(Ty, V, PFS);
4332 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4333 PerFunctionState &PFS) {
4336 if (ParseTypeAndValue(V, PFS)) return true;
4337 if (!isa<BasicBlock>(V))
4338 return Error(Loc, "expected a basic block");
4339 BB = cast<BasicBlock>(V);
4345 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4346 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4347 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4348 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4349 // Parse the linkage.
4350 LocTy LinkageLoc = Lex.getLoc();
4353 unsigned Visibility;
4354 unsigned DLLStorageClass;
4355 AttrBuilder RetAttrs;
4357 Type *RetType = nullptr;
4358 LocTy RetTypeLoc = Lex.getLoc();
4359 if (ParseOptionalLinkage(Linkage) ||
4360 ParseOptionalVisibility(Visibility) ||
4361 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4362 ParseOptionalCallingConv(CC) ||
4363 ParseOptionalReturnAttrs(RetAttrs) ||
4364 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4367 // Verify that the linkage is ok.
4368 switch ((GlobalValue::LinkageTypes)Linkage) {
4369 case GlobalValue::ExternalLinkage:
4370 break; // always ok.
4371 case GlobalValue::ExternalWeakLinkage:
4373 return Error(LinkageLoc, "invalid linkage for function definition");
4375 case GlobalValue::PrivateLinkage:
4376 case GlobalValue::InternalLinkage:
4377 case GlobalValue::AvailableExternallyLinkage:
4378 case GlobalValue::LinkOnceAnyLinkage:
4379 case GlobalValue::LinkOnceODRLinkage:
4380 case GlobalValue::WeakAnyLinkage:
4381 case GlobalValue::WeakODRLinkage:
4383 return Error(LinkageLoc, "invalid linkage for function declaration");
4385 case GlobalValue::AppendingLinkage:
4386 case GlobalValue::CommonLinkage:
4387 return Error(LinkageLoc, "invalid function linkage type");
4390 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4391 return Error(LinkageLoc,
4392 "symbol with local linkage must have default visibility");
4394 if (!FunctionType::isValidReturnType(RetType))
4395 return Error(RetTypeLoc, "invalid function return type");
4397 LocTy NameLoc = Lex.getLoc();
4399 std::string FunctionName;
4400 if (Lex.getKind() == lltok::GlobalVar) {
4401 FunctionName = Lex.getStrVal();
4402 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4403 unsigned NameID = Lex.getUIntVal();
4405 if (NameID != NumberedVals.size())
4406 return TokError("function expected to be numbered '%" +
4407 Twine(NumberedVals.size()) + "'");
4409 return TokError("expected function name");
4414 if (Lex.getKind() != lltok::lparen)
4415 return TokError("expected '(' in function argument list");
4417 SmallVector<ArgInfo, 8> ArgList;
4419 AttrBuilder FuncAttrs;
4420 std::vector<unsigned> FwdRefAttrGrps;
4422 std::string Section;
4426 LocTy UnnamedAddrLoc;
4427 Constant *Prefix = nullptr;
4428 Constant *Prologue = nullptr;
4429 Constant *PersonalityFn = nullptr;
4432 if (ParseArgumentList(ArgList, isVarArg) ||
4433 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4435 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4437 (EatIfPresent(lltok::kw_section) &&
4438 ParseStringConstant(Section)) ||
4439 parseOptionalComdat(FunctionName, C) ||
4440 ParseOptionalAlignment(Alignment) ||
4441 (EatIfPresent(lltok::kw_gc) &&
4442 ParseStringConstant(GC)) ||
4443 (EatIfPresent(lltok::kw_prefix) &&
4444 ParseGlobalTypeAndValue(Prefix)) ||
4445 (EatIfPresent(lltok::kw_prologue) &&
4446 ParseGlobalTypeAndValue(Prologue)) ||
4447 (EatIfPresent(lltok::kw_personality) &&
4448 ParseGlobalTypeAndValue(PersonalityFn)))
4451 if (FuncAttrs.contains(Attribute::Builtin))
4452 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4454 // If the alignment was parsed as an attribute, move to the alignment field.
4455 if (FuncAttrs.hasAlignmentAttr()) {
4456 Alignment = FuncAttrs.getAlignment();
4457 FuncAttrs.removeAttribute(Attribute::Alignment);
4460 // Okay, if we got here, the function is syntactically valid. Convert types
4461 // and do semantic checks.
4462 std::vector<Type*> ParamTypeList;
4463 SmallVector<AttributeSet, 8> Attrs;
4465 if (RetAttrs.hasAttributes())
4466 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4467 AttributeSet::ReturnIndex,
4470 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4471 ParamTypeList.push_back(ArgList[i].Ty);
4472 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4473 AttrBuilder B(ArgList[i].Attrs, i + 1);
4474 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4478 if (FuncAttrs.hasAttributes())
4479 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4480 AttributeSet::FunctionIndex,
4483 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4485 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4486 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4489 FunctionType::get(RetType, ParamTypeList, isVarArg);
4490 PointerType *PFT = PointerType::getUnqual(FT);
4493 if (!FunctionName.empty()) {
4494 // If this was a definition of a forward reference, remove the definition
4495 // from the forward reference table and fill in the forward ref.
4496 auto FRVI = ForwardRefVals.find(FunctionName);
4497 if (FRVI != ForwardRefVals.end()) {
4498 Fn = M->getFunction(FunctionName);
4500 return Error(FRVI->second.second, "invalid forward reference to "
4501 "function as global value!");
4502 if (Fn->getType() != PFT)
4503 return Error(FRVI->second.second, "invalid forward reference to "
4504 "function '" + FunctionName + "' with wrong type!");
4506 ForwardRefVals.erase(FRVI);
4507 } else if ((Fn = M->getFunction(FunctionName))) {
4508 // Reject redefinitions.
4509 return Error(NameLoc, "invalid redefinition of function '" +
4510 FunctionName + "'");
4511 } else if (M->getNamedValue(FunctionName)) {
4512 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4516 // If this is a definition of a forward referenced function, make sure the
4518 auto I = ForwardRefValIDs.find(NumberedVals.size());
4519 if (I != ForwardRefValIDs.end()) {
4520 Fn = cast<Function>(I->second.first);
4521 if (Fn->getType() != PFT)
4522 return Error(NameLoc, "type of definition and forward reference of '@" +
4523 Twine(NumberedVals.size()) + "' disagree");
4524 ForwardRefValIDs.erase(I);
4529 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4530 else // Move the forward-reference to the correct spot in the module.
4531 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4533 if (FunctionName.empty())
4534 NumberedVals.push_back(Fn);
4536 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4537 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4538 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4539 Fn->setCallingConv(CC);
4540 Fn->setAttributes(PAL);
4541 Fn->setUnnamedAddr(UnnamedAddr);
4542 Fn->setAlignment(Alignment);
4543 Fn->setSection(Section);
4545 Fn->setPersonalityFn(PersonalityFn);
4546 if (!GC.empty()) Fn->setGC(GC.c_str());
4547 Fn->setPrefixData(Prefix);
4548 Fn->setPrologueData(Prologue);
4549 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4551 // Add all of the arguments we parsed to the function.
4552 Function::arg_iterator ArgIt = Fn->arg_begin();
4553 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4554 // If the argument has a name, insert it into the argument symbol table.
4555 if (ArgList[i].Name.empty()) continue;
4557 // Set the name, if it conflicted, it will be auto-renamed.
4558 ArgIt->setName(ArgList[i].Name);
4560 if (ArgIt->getName() != ArgList[i].Name)
4561 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4562 ArgList[i].Name + "'");
4568 // Check the declaration has no block address forward references.
4570 if (FunctionName.empty()) {
4571 ID.Kind = ValID::t_GlobalID;
4572 ID.UIntVal = NumberedVals.size() - 1;
4574 ID.Kind = ValID::t_GlobalName;
4575 ID.StrVal = FunctionName;
4577 auto Blocks = ForwardRefBlockAddresses.find(ID);
4578 if (Blocks != ForwardRefBlockAddresses.end())
4579 return Error(Blocks->first.Loc,
4580 "cannot take blockaddress inside a declaration");
4584 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4586 if (FunctionNumber == -1) {
4587 ID.Kind = ValID::t_GlobalName;
4588 ID.StrVal = F.getName();
4590 ID.Kind = ValID::t_GlobalID;
4591 ID.UIntVal = FunctionNumber;
4594 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4595 if (Blocks == P.ForwardRefBlockAddresses.end())
4598 for (const auto &I : Blocks->second) {
4599 const ValID &BBID = I.first;
4600 GlobalValue *GV = I.second;
4602 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4603 "Expected local id or name");
4605 if (BBID.Kind == ValID::t_LocalName)
4606 BB = GetBB(BBID.StrVal, BBID.Loc);
4608 BB = GetBB(BBID.UIntVal, BBID.Loc);
4610 return P.Error(BBID.Loc, "referenced value is not a basic block");
4612 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4613 GV->eraseFromParent();
4616 P.ForwardRefBlockAddresses.erase(Blocks);
4620 /// ParseFunctionBody
4621 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4622 bool LLParser::ParseFunctionBody(Function &Fn) {
4623 if (Lex.getKind() != lltok::lbrace)
4624 return TokError("expected '{' in function body");
4625 Lex.Lex(); // eat the {.
4627 int FunctionNumber = -1;
4628 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4630 PerFunctionState PFS(*this, Fn, FunctionNumber);
4632 // Resolve block addresses and allow basic blocks to be forward-declared
4633 // within this function.
4634 if (PFS.resolveForwardRefBlockAddresses())
4636 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4638 // We need at least one basic block.
4639 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4640 return TokError("function body requires at least one basic block");
4642 while (Lex.getKind() != lltok::rbrace &&
4643 Lex.getKind() != lltok::kw_uselistorder)
4644 if (ParseBasicBlock(PFS)) return true;
4646 while (Lex.getKind() != lltok::rbrace)
4647 if (ParseUseListOrder(&PFS))
4653 // Verify function is ok.
4654 return PFS.FinishFunction();
4658 /// ::= LabelStr? Instruction*
4659 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4660 // If this basic block starts out with a name, remember it.
4662 LocTy NameLoc = Lex.getLoc();
4663 if (Lex.getKind() == lltok::LabelStr) {
4664 Name = Lex.getStrVal();
4668 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4670 return Error(NameLoc,
4671 "unable to create block named '" + Name + "'");
4673 std::string NameStr;
4675 // Parse the instructions in this block until we get a terminator.
4678 // This instruction may have three possibilities for a name: a) none
4679 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4680 LocTy NameLoc = Lex.getLoc();
4684 if (Lex.getKind() == lltok::LocalVarID) {
4685 NameID = Lex.getUIntVal();
4687 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4689 } else if (Lex.getKind() == lltok::LocalVar) {
4690 NameStr = Lex.getStrVal();
4692 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4696 switch (ParseInstruction(Inst, BB, PFS)) {
4697 default: llvm_unreachable("Unknown ParseInstruction result!");
4698 case InstError: return true;
4700 BB->getInstList().push_back(Inst);
4702 // With a normal result, we check to see if the instruction is followed by
4703 // a comma and metadata.
4704 if (EatIfPresent(lltok::comma))
4705 if (ParseInstructionMetadata(*Inst))
4708 case InstExtraComma:
4709 BB->getInstList().push_back(Inst);
4711 // If the instruction parser ate an extra comma at the end of it, it
4712 // *must* be followed by metadata.
4713 if (ParseInstructionMetadata(*Inst))
4718 // Set the name on the instruction.
4719 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4720 } while (!isa<TerminatorInst>(Inst));
4725 //===----------------------------------------------------------------------===//
4726 // Instruction Parsing.
4727 //===----------------------------------------------------------------------===//
4729 /// ParseInstruction - Parse one of the many different instructions.
4731 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4732 PerFunctionState &PFS) {
4733 lltok::Kind Token = Lex.getKind();
4734 if (Token == lltok::Eof)
4735 return TokError("found end of file when expecting more instructions");
4736 LocTy Loc = Lex.getLoc();
4737 unsigned KeywordVal = Lex.getUIntVal();
4738 Lex.Lex(); // Eat the keyword.
4741 default: return Error(Loc, "expected instruction opcode");
4742 // Terminator Instructions.
4743 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4744 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4745 case lltok::kw_br: return ParseBr(Inst, PFS);
4746 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4747 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4748 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4749 case lltok::kw_resume: return ParseResume(Inst, PFS);
4750 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4751 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4752 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4753 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4754 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4755 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4756 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4757 // Binary Operators.
4761 case lltok::kw_shl: {
4762 bool NUW = EatIfPresent(lltok::kw_nuw);
4763 bool NSW = EatIfPresent(lltok::kw_nsw);
4764 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4766 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4768 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4769 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4772 case lltok::kw_fadd:
4773 case lltok::kw_fsub:
4774 case lltok::kw_fmul:
4775 case lltok::kw_fdiv:
4776 case lltok::kw_frem: {
4777 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4778 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4782 Inst->setFastMathFlags(FMF);
4786 case lltok::kw_sdiv:
4787 case lltok::kw_udiv:
4788 case lltok::kw_lshr:
4789 case lltok::kw_ashr: {
4790 bool Exact = EatIfPresent(lltok::kw_exact);
4792 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4793 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4797 case lltok::kw_urem:
4798 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4801 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4802 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4803 case lltok::kw_fcmp: {
4804 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4805 int Res = ParseCompare(Inst, PFS, KeywordVal);
4809 Inst->setFastMathFlags(FMF);
4814 case lltok::kw_trunc:
4815 case lltok::kw_zext:
4816 case lltok::kw_sext:
4817 case lltok::kw_fptrunc:
4818 case lltok::kw_fpext:
4819 case lltok::kw_bitcast:
4820 case lltok::kw_addrspacecast:
4821 case lltok::kw_uitofp:
4822 case lltok::kw_sitofp:
4823 case lltok::kw_fptoui:
4824 case lltok::kw_fptosi:
4825 case lltok::kw_inttoptr:
4826 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4828 case lltok::kw_select: return ParseSelect(Inst, PFS);
4829 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4830 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4831 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4832 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4833 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4834 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4836 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4837 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4838 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4839 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
4841 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4842 case lltok::kw_load: return ParseLoad(Inst, PFS);
4843 case lltok::kw_store: return ParseStore(Inst, PFS);
4844 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4845 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4846 case lltok::kw_fence: return ParseFence(Inst, PFS);
4847 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4848 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4849 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4853 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4854 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4855 if (Opc == Instruction::FCmp) {
4856 switch (Lex.getKind()) {
4857 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4858 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4859 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4860 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4861 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4862 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4863 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4864 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4865 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4866 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4867 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4868 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4869 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4870 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4871 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4872 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4873 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4876 switch (Lex.getKind()) {
4877 default: return TokError("expected icmp predicate (e.g. 'eq')");
4878 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4879 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4880 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4881 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4882 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4883 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4884 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4885 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4886 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4887 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4894 //===----------------------------------------------------------------------===//
4895 // Terminator Instructions.
4896 //===----------------------------------------------------------------------===//
4898 /// ParseRet - Parse a return instruction.
4899 /// ::= 'ret' void (',' !dbg, !1)*
4900 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4901 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4902 PerFunctionState &PFS) {
4903 SMLoc TypeLoc = Lex.getLoc();
4905 if (ParseType(Ty, true /*void allowed*/)) return true;
4907 Type *ResType = PFS.getFunction().getReturnType();
4909 if (Ty->isVoidTy()) {
4910 if (!ResType->isVoidTy())
4911 return Error(TypeLoc, "value doesn't match function result type '" +
4912 getTypeString(ResType) + "'");
4914 Inst = ReturnInst::Create(Context);
4919 if (ParseValue(Ty, RV, PFS)) return true;
4921 if (ResType != RV->getType())
4922 return Error(TypeLoc, "value doesn't match function result type '" +
4923 getTypeString(ResType) + "'");
4925 Inst = ReturnInst::Create(Context, RV);
4931 /// ::= 'br' TypeAndValue
4932 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4933 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4936 BasicBlock *Op1, *Op2;
4937 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4939 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4940 Inst = BranchInst::Create(BB);
4944 if (Op0->getType() != Type::getInt1Ty(Context))
4945 return Error(Loc, "branch condition must have 'i1' type");
4947 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4948 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4949 ParseToken(lltok::comma, "expected ',' after true destination") ||
4950 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4953 Inst = BranchInst::Create(Op1, Op2, Op0);
4959 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4961 /// ::= (TypeAndValue ',' TypeAndValue)*
4962 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4963 LocTy CondLoc, BBLoc;
4965 BasicBlock *DefaultBB;
4966 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4967 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4968 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4969 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4972 if (!Cond->getType()->isIntegerTy())
4973 return Error(CondLoc, "switch condition must have integer type");
4975 // Parse the jump table pairs.
4976 SmallPtrSet<Value*, 32> SeenCases;
4977 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4978 while (Lex.getKind() != lltok::rsquare) {
4982 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4983 ParseToken(lltok::comma, "expected ',' after case value") ||
4984 ParseTypeAndBasicBlock(DestBB, PFS))
4987 if (!SeenCases.insert(Constant).second)
4988 return Error(CondLoc, "duplicate case value in switch");
4989 if (!isa<ConstantInt>(Constant))
4990 return Error(CondLoc, "case value is not a constant integer");
4992 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4995 Lex.Lex(); // Eat the ']'.
4997 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4998 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4999 SI->addCase(Table[i].first, Table[i].second);
5006 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5007 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5010 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5011 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5012 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5015 if (!Address->getType()->isPointerTy())
5016 return Error(AddrLoc, "indirectbr address must have pointer type");
5018 // Parse the destination list.
5019 SmallVector<BasicBlock*, 16> DestList;
5021 if (Lex.getKind() != lltok::rsquare) {
5023 if (ParseTypeAndBasicBlock(DestBB, PFS))
5025 DestList.push_back(DestBB);
5027 while (EatIfPresent(lltok::comma)) {
5028 if (ParseTypeAndBasicBlock(DestBB, PFS))
5030 DestList.push_back(DestBB);
5034 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5037 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5038 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5039 IBI->addDestination(DestList[i]);
5046 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5047 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5048 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5049 LocTy CallLoc = Lex.getLoc();
5050 AttrBuilder RetAttrs, FnAttrs;
5051 std::vector<unsigned> FwdRefAttrGrps;
5054 Type *RetType = nullptr;
5057 SmallVector<ParamInfo, 16> ArgList;
5058 SmallVector<OperandBundleDef, 2> BundleList;
5060 BasicBlock *NormalBB, *UnwindBB;
5061 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5062 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5063 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5064 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5066 ParseOptionalOperandBundles(BundleList, PFS) ||
5067 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5068 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5069 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5070 ParseTypeAndBasicBlock(UnwindBB, PFS))
5073 // If RetType is a non-function pointer type, then this is the short syntax
5074 // for the call, which means that RetType is just the return type. Infer the
5075 // rest of the function argument types from the arguments that are present.
5076 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5078 // Pull out the types of all of the arguments...
5079 std::vector<Type*> ParamTypes;
5080 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5081 ParamTypes.push_back(ArgList[i].V->getType());
5083 if (!FunctionType::isValidReturnType(RetType))
5084 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5086 Ty = FunctionType::get(RetType, ParamTypes, false);
5091 // Look up the callee.
5093 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5096 // Set up the Attribute for the function.
5097 SmallVector<AttributeSet, 8> Attrs;
5098 if (RetAttrs.hasAttributes())
5099 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5100 AttributeSet::ReturnIndex,
5103 SmallVector<Value*, 8> Args;
5105 // Loop through FunctionType's arguments and ensure they are specified
5106 // correctly. Also, gather any parameter attributes.
5107 FunctionType::param_iterator I = Ty->param_begin();
5108 FunctionType::param_iterator E = Ty->param_end();
5109 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5110 Type *ExpectedTy = nullptr;
5113 } else if (!Ty->isVarArg()) {
5114 return Error(ArgList[i].Loc, "too many arguments specified");
5117 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5118 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5119 getTypeString(ExpectedTy) + "'");
5120 Args.push_back(ArgList[i].V);
5121 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5122 AttrBuilder B(ArgList[i].Attrs, i + 1);
5123 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5128 return Error(CallLoc, "not enough parameters specified for call");
5130 if (FnAttrs.hasAttributes()) {
5131 if (FnAttrs.hasAlignmentAttr())
5132 return Error(CallLoc, "invoke instructions may not have an alignment");
5134 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5135 AttributeSet::FunctionIndex,
5139 // Finish off the Attribute and check them
5140 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5143 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5144 II->setCallingConv(CC);
5145 II->setAttributes(PAL);
5146 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5152 /// ::= 'resume' TypeAndValue
5153 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5154 Value *Exn; LocTy ExnLoc;
5155 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5158 ResumeInst *RI = ResumeInst::Create(Exn);
5163 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5164 PerFunctionState &PFS) {
5165 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5168 while (Lex.getKind() != lltok::rsquare) {
5169 // If this isn't the first argument, we need a comma.
5170 if (!Args.empty() &&
5171 ParseToken(lltok::comma, "expected ',' in argument list"))
5174 // Parse the argument.
5176 Type *ArgTy = nullptr;
5177 if (ParseType(ArgTy, ArgLoc))
5181 if (ArgTy->isMetadataTy()) {
5182 if (ParseMetadataAsValue(V, PFS))
5185 if (ParseValue(ArgTy, V, PFS))
5191 Lex.Lex(); // Lex the ']'.
5196 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5197 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5198 Value *CleanupPad = nullptr;
5200 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5203 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5206 BasicBlock *UnwindBB = nullptr;
5207 if (Lex.getKind() == lltok::kw_to) {
5209 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5212 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5217 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5222 /// ::= 'catchret' Value 'to' TypeAndValue
5223 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5224 Value *CatchPad = nullptr;
5226 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5230 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5231 ParseTypeAndBasicBlock(BB, PFS))
5234 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5239 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5240 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5241 SmallVector<Value *, 8> Args;
5242 if (ParseExceptionArgs(Args, PFS))
5245 BasicBlock *NormalBB, *UnwindBB;
5246 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5247 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5248 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5249 ParseTypeAndBasicBlock(UnwindBB, PFS))
5252 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5256 /// ParseTerminatePad
5257 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5258 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5259 SmallVector<Value *, 8> Args;
5260 if (ParseExceptionArgs(Args, PFS))
5263 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5266 BasicBlock *UnwindBB = nullptr;
5267 if (Lex.getKind() == lltok::kw_to) {
5269 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5272 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5277 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5282 /// ::= 'cleanuppad' ParamList
5283 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5284 SmallVector<Value *, 8> Args;
5285 if (ParseExceptionArgs(Args, PFS))
5288 Inst = CleanupPadInst::Create(Context, Args);
5292 /// ParseCatchEndPad
5293 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5294 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5295 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5298 BasicBlock *UnwindBB = nullptr;
5299 if (Lex.getKind() == lltok::kw_to) {
5301 if (Lex.getKind() == lltok::kw_caller) {
5307 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5312 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5316 /// ParseCatchEndPad
5317 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5318 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5319 Value *CleanupPad = nullptr;
5321 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5324 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5327 BasicBlock *UnwindBB = nullptr;
5328 if (Lex.getKind() == lltok::kw_to) {
5330 if (Lex.getKind() == lltok::kw_caller) {
5336 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5341 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5345 //===----------------------------------------------------------------------===//
5346 // Binary Operators.
5347 //===----------------------------------------------------------------------===//
5350 /// ::= ArithmeticOps TypeAndValue ',' Value
5352 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5353 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5354 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5355 unsigned Opc, unsigned OperandType) {
5356 LocTy Loc; Value *LHS, *RHS;
5357 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5358 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5359 ParseValue(LHS->getType(), RHS, PFS))
5363 switch (OperandType) {
5364 default: llvm_unreachable("Unknown operand type!");
5365 case 0: // int or FP.
5366 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5367 LHS->getType()->isFPOrFPVectorTy();
5369 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5370 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5374 return Error(Loc, "invalid operand type for instruction");
5376 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5381 /// ::= ArithmeticOps TypeAndValue ',' Value {
5382 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5384 LocTy Loc; Value *LHS, *RHS;
5385 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5386 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5387 ParseValue(LHS->getType(), RHS, PFS))
5390 if (!LHS->getType()->isIntOrIntVectorTy())
5391 return Error(Loc,"instruction requires integer or integer vector operands");
5393 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5399 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5400 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5401 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5403 // Parse the integer/fp comparison predicate.
5407 if (ParseCmpPredicate(Pred, Opc) ||
5408 ParseTypeAndValue(LHS, Loc, PFS) ||
5409 ParseToken(lltok::comma, "expected ',' after compare value") ||
5410 ParseValue(LHS->getType(), RHS, PFS))
5413 if (Opc == Instruction::FCmp) {
5414 if (!LHS->getType()->isFPOrFPVectorTy())
5415 return Error(Loc, "fcmp requires floating point operands");
5416 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5418 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5419 if (!LHS->getType()->isIntOrIntVectorTy() &&
5420 !LHS->getType()->getScalarType()->isPointerTy())
5421 return Error(Loc, "icmp requires integer operands");
5422 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5427 //===----------------------------------------------------------------------===//
5428 // Other Instructions.
5429 //===----------------------------------------------------------------------===//
5433 /// ::= CastOpc TypeAndValue 'to' Type
5434 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5438 Type *DestTy = nullptr;
5439 if (ParseTypeAndValue(Op, Loc, PFS) ||
5440 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5444 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5445 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5446 return Error(Loc, "invalid cast opcode for cast from '" +
5447 getTypeString(Op->getType()) + "' to '" +
5448 getTypeString(DestTy) + "'");
5450 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5455 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5456 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5458 Value *Op0, *Op1, *Op2;
5459 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5460 ParseToken(lltok::comma, "expected ',' after select condition") ||
5461 ParseTypeAndValue(Op1, PFS) ||
5462 ParseToken(lltok::comma, "expected ',' after select value") ||
5463 ParseTypeAndValue(Op2, PFS))
5466 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5467 return Error(Loc, Reason);
5469 Inst = SelectInst::Create(Op0, Op1, Op2);
5474 /// ::= 'va_arg' TypeAndValue ',' Type
5475 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5477 Type *EltTy = nullptr;
5479 if (ParseTypeAndValue(Op, PFS) ||
5480 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5481 ParseType(EltTy, TypeLoc))
5484 if (!EltTy->isFirstClassType())
5485 return Error(TypeLoc, "va_arg requires operand with first class type");
5487 Inst = new VAArgInst(Op, EltTy);
5491 /// ParseExtractElement
5492 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5493 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5496 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5497 ParseToken(lltok::comma, "expected ',' after extract value") ||
5498 ParseTypeAndValue(Op1, PFS))
5501 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5502 return Error(Loc, "invalid extractelement operands");
5504 Inst = ExtractElementInst::Create(Op0, Op1);
5508 /// ParseInsertElement
5509 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5510 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5512 Value *Op0, *Op1, *Op2;
5513 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5514 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5515 ParseTypeAndValue(Op1, PFS) ||
5516 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5517 ParseTypeAndValue(Op2, PFS))
5520 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5521 return Error(Loc, "invalid insertelement operands");
5523 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5527 /// ParseShuffleVector
5528 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5529 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5531 Value *Op0, *Op1, *Op2;
5532 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5533 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5534 ParseTypeAndValue(Op1, PFS) ||
5535 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5536 ParseTypeAndValue(Op2, PFS))
5539 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5540 return Error(Loc, "invalid shufflevector operands");
5542 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5547 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5548 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5549 Type *Ty = nullptr; LocTy TypeLoc;
5552 if (ParseType(Ty, TypeLoc) ||
5553 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5554 ParseValue(Ty, Op0, PFS) ||
5555 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5556 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5557 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5560 bool AteExtraComma = false;
5561 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5563 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5565 if (!EatIfPresent(lltok::comma))
5568 if (Lex.getKind() == lltok::MetadataVar) {
5569 AteExtraComma = true;
5573 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5574 ParseValue(Ty, Op0, PFS) ||
5575 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5576 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5577 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5581 if (!Ty->isFirstClassType())
5582 return Error(TypeLoc, "phi node must have first class type");
5584 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5585 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5586 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5588 return AteExtraComma ? InstExtraComma : InstNormal;
5592 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5594 /// ::= 'catch' TypeAndValue
5596 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5597 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5598 Type *Ty = nullptr; LocTy TyLoc;
5600 if (ParseType(Ty, TyLoc))
5603 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5604 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5606 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5607 LandingPadInst::ClauseType CT;
5608 if (EatIfPresent(lltok::kw_catch))
5609 CT = LandingPadInst::Catch;
5610 else if (EatIfPresent(lltok::kw_filter))
5611 CT = LandingPadInst::Filter;
5613 return TokError("expected 'catch' or 'filter' clause type");
5617 if (ParseTypeAndValue(V, VLoc, PFS))
5620 // A 'catch' type expects a non-array constant. A filter clause expects an
5622 if (CT == LandingPadInst::Catch) {
5623 if (isa<ArrayType>(V->getType()))
5624 Error(VLoc, "'catch' clause has an invalid type");
5626 if (!isa<ArrayType>(V->getType()))
5627 Error(VLoc, "'filter' clause has an invalid type");
5630 Constant *CV = dyn_cast<Constant>(V);
5632 return Error(VLoc, "clause argument must be a constant");
5636 Inst = LP.release();
5641 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5642 /// ParameterList OptionalAttrs
5643 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5644 /// ParameterList OptionalAttrs
5645 /// ::= 'musttail' '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, "expected 'tail call'")) ||
5662 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5663 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5664 ParseValID(CalleeID) ||
5665 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5666 PFS.getFunction().isVarArg()) ||
5667 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5668 ParseOptionalOperandBundles(BundleList, PFS))
5671 // If RetType is a non-function pointer type, then this is the short syntax
5672 // for the call, which means that RetType is just the return type. Infer the
5673 // rest of the function argument types from the arguments that are present.
5674 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5676 // Pull out the types of all of the arguments...
5677 std::vector<Type*> ParamTypes;
5678 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5679 ParamTypes.push_back(ArgList[i].V->getType());
5681 if (!FunctionType::isValidReturnType(RetType))
5682 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5684 Ty = FunctionType::get(RetType, ParamTypes, false);
5689 // Look up the callee.
5691 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5694 // Set up the Attribute for the function.
5695 SmallVector<AttributeSet, 8> Attrs;
5696 if (RetAttrs.hasAttributes())
5697 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5698 AttributeSet::ReturnIndex,
5701 SmallVector<Value*, 8> Args;
5703 // Loop through FunctionType's arguments and ensure they are specified
5704 // correctly. Also, gather any parameter attributes.
5705 FunctionType::param_iterator I = Ty->param_begin();
5706 FunctionType::param_iterator E = Ty->param_end();
5707 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5708 Type *ExpectedTy = nullptr;
5711 } else if (!Ty->isVarArg()) {
5712 return Error(ArgList[i].Loc, "too many arguments specified");
5715 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5716 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5717 getTypeString(ExpectedTy) + "'");
5718 Args.push_back(ArgList[i].V);
5719 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5720 AttrBuilder B(ArgList[i].Attrs, i + 1);
5721 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5726 return Error(CallLoc, "not enough parameters specified for call");
5728 if (FnAttrs.hasAttributes()) {
5729 if (FnAttrs.hasAlignmentAttr())
5730 return Error(CallLoc, "call instructions may not have an alignment");
5732 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5733 AttributeSet::FunctionIndex,
5737 // Finish off the Attribute and check them
5738 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5740 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5741 CI->setTailCallKind(TCK);
5742 CI->setCallingConv(CC);
5743 CI->setAttributes(PAL);
5744 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5749 //===----------------------------------------------------------------------===//
5750 // Memory Instructions.
5751 //===----------------------------------------------------------------------===//
5754 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5755 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5756 Value *Size = nullptr;
5757 LocTy SizeLoc, TyLoc;
5758 unsigned Alignment = 0;
5761 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5763 if (ParseType(Ty, TyLoc)) return true;
5765 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5766 return Error(TyLoc, "invalid type for alloca");
5768 bool AteExtraComma = false;
5769 if (EatIfPresent(lltok::comma)) {
5770 if (Lex.getKind() == lltok::kw_align) {
5771 if (ParseOptionalAlignment(Alignment)) return true;
5772 } else if (Lex.getKind() == lltok::MetadataVar) {
5773 AteExtraComma = true;
5775 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5776 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5781 if (Size && !Size->getType()->isIntegerTy())
5782 return Error(SizeLoc, "element count must have integer type");
5784 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5785 AI->setUsedWithInAlloca(IsInAlloca);
5787 return AteExtraComma ? InstExtraComma : InstNormal;
5791 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5792 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5793 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5794 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5795 Value *Val; LocTy Loc;
5796 unsigned Alignment = 0;
5797 bool AteExtraComma = false;
5798 bool isAtomic = false;
5799 AtomicOrdering Ordering = NotAtomic;
5800 SynchronizationScope Scope = CrossThread;
5802 if (Lex.getKind() == lltok::kw_atomic) {
5807 bool isVolatile = false;
5808 if (Lex.getKind() == lltok::kw_volatile) {
5814 LocTy ExplicitTypeLoc = Lex.getLoc();
5815 if (ParseType(Ty) ||
5816 ParseToken(lltok::comma, "expected comma after load's type") ||
5817 ParseTypeAndValue(Val, Loc, PFS) ||
5818 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5819 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5822 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5823 return Error(Loc, "load operand must be a pointer to a first class type");
5824 if (isAtomic && !Alignment)
5825 return Error(Loc, "atomic load must have explicit non-zero alignment");
5826 if (Ordering == Release || Ordering == AcquireRelease)
5827 return Error(Loc, "atomic load cannot use Release ordering");
5829 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5830 return Error(ExplicitTypeLoc,
5831 "explicit pointee type doesn't match operand's pointee type");
5833 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5834 return AteExtraComma ? InstExtraComma : InstNormal;
5839 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5840 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5841 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5842 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5843 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5844 unsigned Alignment = 0;
5845 bool AteExtraComma = false;
5846 bool isAtomic = false;
5847 AtomicOrdering Ordering = NotAtomic;
5848 SynchronizationScope Scope = CrossThread;
5850 if (Lex.getKind() == lltok::kw_atomic) {
5855 bool isVolatile = false;
5856 if (Lex.getKind() == lltok::kw_volatile) {
5861 if (ParseTypeAndValue(Val, Loc, PFS) ||
5862 ParseToken(lltok::comma, "expected ',' after store operand") ||
5863 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5864 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5865 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5868 if (!Ptr->getType()->isPointerTy())
5869 return Error(PtrLoc, "store operand must be a pointer");
5870 if (!Val->getType()->isFirstClassType())
5871 return Error(Loc, "store operand must be a first class value");
5872 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5873 return Error(Loc, "stored value and pointer type do not match");
5874 if (isAtomic && !Alignment)
5875 return Error(Loc, "atomic store must have explicit non-zero alignment");
5876 if (Ordering == Acquire || Ordering == AcquireRelease)
5877 return Error(Loc, "atomic store cannot use Acquire ordering");
5879 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5880 return AteExtraComma ? InstExtraComma : InstNormal;
5884 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5885 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5886 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5887 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5888 bool AteExtraComma = false;
5889 AtomicOrdering SuccessOrdering = NotAtomic;
5890 AtomicOrdering FailureOrdering = NotAtomic;
5891 SynchronizationScope Scope = CrossThread;
5892 bool isVolatile = false;
5893 bool isWeak = false;
5895 if (EatIfPresent(lltok::kw_weak))
5898 if (EatIfPresent(lltok::kw_volatile))
5901 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5902 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5903 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5904 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5905 ParseTypeAndValue(New, NewLoc, PFS) ||
5906 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5907 ParseOrdering(FailureOrdering))
5910 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5911 return TokError("cmpxchg cannot be unordered");
5912 if (SuccessOrdering < FailureOrdering)
5913 return TokError("cmpxchg must be at least as ordered on success as failure");
5914 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5915 return TokError("cmpxchg failure ordering cannot include release semantics");
5916 if (!Ptr->getType()->isPointerTy())
5917 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5918 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5919 return Error(CmpLoc, "compare value and pointer type do not match");
5920 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5921 return Error(NewLoc, "new value and pointer type do not match");
5922 if (!New->getType()->isIntegerTy())
5923 return Error(NewLoc, "cmpxchg operand must be an integer");
5924 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5925 if (Size < 8 || (Size & (Size - 1)))
5926 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5929 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5930 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5931 CXI->setVolatile(isVolatile);
5932 CXI->setWeak(isWeak);
5934 return AteExtraComma ? InstExtraComma : InstNormal;
5938 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5939 /// 'singlethread'? AtomicOrdering
5940 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5941 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5942 bool AteExtraComma = false;
5943 AtomicOrdering Ordering = NotAtomic;
5944 SynchronizationScope Scope = CrossThread;
5945 bool isVolatile = false;
5946 AtomicRMWInst::BinOp Operation;
5948 if (EatIfPresent(lltok::kw_volatile))
5951 switch (Lex.getKind()) {
5952 default: return TokError("expected binary operation in atomicrmw");
5953 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5954 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5955 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5956 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5957 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5958 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5959 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5960 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5961 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5962 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5963 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5965 Lex.Lex(); // Eat the operation.
5967 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5968 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5969 ParseTypeAndValue(Val, ValLoc, PFS) ||
5970 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5973 if (Ordering == Unordered)
5974 return TokError("atomicrmw cannot be unordered");
5975 if (!Ptr->getType()->isPointerTy())
5976 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5977 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5978 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5979 if (!Val->getType()->isIntegerTy())
5980 return Error(ValLoc, "atomicrmw operand must be an integer");
5981 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5982 if (Size < 8 || (Size & (Size - 1)))
5983 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5986 AtomicRMWInst *RMWI =
5987 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5988 RMWI->setVolatile(isVolatile);
5990 return AteExtraComma ? InstExtraComma : InstNormal;
5994 /// ::= 'fence' 'singlethread'? AtomicOrdering
5995 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5996 AtomicOrdering Ordering = NotAtomic;
5997 SynchronizationScope Scope = CrossThread;
5998 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6001 if (Ordering == Unordered)
6002 return TokError("fence cannot be unordered");
6003 if (Ordering == Monotonic)
6004 return TokError("fence cannot be monotonic");
6006 Inst = new FenceInst(Context, Ordering, Scope);
6010 /// ParseGetElementPtr
6011 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6012 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6013 Value *Ptr = nullptr;
6014 Value *Val = nullptr;
6017 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6020 LocTy ExplicitTypeLoc = Lex.getLoc();
6021 if (ParseType(Ty) ||
6022 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6023 ParseTypeAndValue(Ptr, Loc, PFS))
6026 Type *BaseType = Ptr->getType();
6027 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6028 if (!BasePointerType)
6029 return Error(Loc, "base of getelementptr must be a pointer");
6031 if (Ty != BasePointerType->getElementType())
6032 return Error(ExplicitTypeLoc,
6033 "explicit pointee type doesn't match operand's pointee type");
6035 SmallVector<Value*, 16> Indices;
6036 bool AteExtraComma = false;
6037 // GEP returns a vector of pointers if at least one of parameters is a vector.
6038 // All vector parameters should have the same vector width.
6039 unsigned GEPWidth = BaseType->isVectorTy() ?
6040 BaseType->getVectorNumElements() : 0;
6042 while (EatIfPresent(lltok::comma)) {
6043 if (Lex.getKind() == lltok::MetadataVar) {
6044 AteExtraComma = true;
6047 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6048 if (!Val->getType()->getScalarType()->isIntegerTy())
6049 return Error(EltLoc, "getelementptr index must be an integer");
6051 if (Val->getType()->isVectorTy()) {
6052 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6053 if (GEPWidth && GEPWidth != ValNumEl)
6054 return Error(EltLoc,
6055 "getelementptr vector index has a wrong number of elements");
6056 GEPWidth = ValNumEl;
6058 Indices.push_back(Val);
6061 SmallPtrSet<Type*, 4> Visited;
6062 if (!Indices.empty() && !Ty->isSized(&Visited))
6063 return Error(Loc, "base element of getelementptr must be sized");
6065 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6066 return Error(Loc, "invalid getelementptr indices");
6067 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6069 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6070 return AteExtraComma ? InstExtraComma : InstNormal;
6073 /// ParseExtractValue
6074 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6075 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6076 Value *Val; LocTy Loc;
6077 SmallVector<unsigned, 4> Indices;
6079 if (ParseTypeAndValue(Val, Loc, PFS) ||
6080 ParseIndexList(Indices, AteExtraComma))
6083 if (!Val->getType()->isAggregateType())
6084 return Error(Loc, "extractvalue operand must be aggregate type");
6086 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6087 return Error(Loc, "invalid indices for extractvalue");
6088 Inst = ExtractValueInst::Create(Val, Indices);
6089 return AteExtraComma ? InstExtraComma : InstNormal;
6092 /// ParseInsertValue
6093 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6094 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6095 Value *Val0, *Val1; LocTy Loc0, Loc1;
6096 SmallVector<unsigned, 4> Indices;
6098 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6099 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6100 ParseTypeAndValue(Val1, Loc1, PFS) ||
6101 ParseIndexList(Indices, AteExtraComma))
6104 if (!Val0->getType()->isAggregateType())
6105 return Error(Loc0, "insertvalue operand must be aggregate type");
6107 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6109 return Error(Loc0, "invalid indices for insertvalue");
6110 if (IndexedType != Val1->getType())
6111 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6112 getTypeString(Val1->getType()) + "' instead of '" +
6113 getTypeString(IndexedType) + "'");
6114 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6115 return AteExtraComma ? InstExtraComma : InstNormal;
6118 //===----------------------------------------------------------------------===//
6119 // Embedded metadata.
6120 //===----------------------------------------------------------------------===//
6122 /// ParseMDNodeVector
6123 /// ::= { Element (',' Element)* }
6125 /// ::= 'null' | TypeAndValue
6126 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6127 if (ParseToken(lltok::lbrace, "expected '{' here"))
6130 // Check for an empty list.
6131 if (EatIfPresent(lltok::rbrace))
6135 // Null is a special case since it is typeless.
6136 if (EatIfPresent(lltok::kw_null)) {
6137 Elts.push_back(nullptr);
6142 if (ParseMetadata(MD, nullptr))
6145 } while (EatIfPresent(lltok::comma));
6147 return ParseToken(lltok::rbrace, "expected end of metadata node");
6150 //===----------------------------------------------------------------------===//
6151 // Use-list order directives.
6152 //===----------------------------------------------------------------------===//
6153 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6156 return Error(Loc, "value has no uses");
6158 unsigned NumUses = 0;
6159 SmallDenseMap<const Use *, unsigned, 16> Order;
6160 for (const Use &U : V->uses()) {
6161 if (++NumUses > Indexes.size())
6163 Order[&U] = Indexes[NumUses - 1];
6166 return Error(Loc, "value only has one use");
6167 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6168 return Error(Loc, "wrong number of indexes, expected " +
6169 Twine(std::distance(V->use_begin(), V->use_end())));
6171 V->sortUseList([&](const Use &L, const Use &R) {
6172 return Order.lookup(&L) < Order.lookup(&R);
6177 /// ParseUseListOrderIndexes
6178 /// ::= '{' uint32 (',' uint32)+ '}'
6179 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6180 SMLoc Loc = Lex.getLoc();
6181 if (ParseToken(lltok::lbrace, "expected '{' here"))
6183 if (Lex.getKind() == lltok::rbrace)
6184 return Lex.Error("expected non-empty list of uselistorder indexes");
6186 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6187 // indexes should be distinct numbers in the range [0, size-1], and should
6189 unsigned Offset = 0;
6191 bool IsOrdered = true;
6192 assert(Indexes.empty() && "Expected empty order vector");
6195 if (ParseUInt32(Index))
6198 // Update consistency checks.
6199 Offset += Index - Indexes.size();
6200 Max = std::max(Max, Index);
6201 IsOrdered &= Index == Indexes.size();
6203 Indexes.push_back(Index);
6204 } while (EatIfPresent(lltok::comma));
6206 if (ParseToken(lltok::rbrace, "expected '}' here"))
6209 if (Indexes.size() < 2)
6210 return Error(Loc, "expected >= 2 uselistorder indexes");
6211 if (Offset != 0 || Max >= Indexes.size())
6212 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6214 return Error(Loc, "expected uselistorder indexes to change the order");
6219 /// ParseUseListOrder
6220 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6221 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6222 SMLoc Loc = Lex.getLoc();
6223 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6227 SmallVector<unsigned, 16> Indexes;
6228 if (ParseTypeAndValue(V, PFS) ||
6229 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6230 ParseUseListOrderIndexes(Indexes))
6233 return sortUseListOrder(V, Indexes, Loc);
6236 /// ParseUseListOrderBB
6237 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6238 bool LLParser::ParseUseListOrderBB() {
6239 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6240 SMLoc Loc = Lex.getLoc();
6244 SmallVector<unsigned, 16> Indexes;
6245 if (ParseValID(Fn) ||
6246 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6247 ParseValID(Label) ||
6248 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6249 ParseUseListOrderIndexes(Indexes))
6252 // Check the function.
6254 if (Fn.Kind == ValID::t_GlobalName)
6255 GV = M->getNamedValue(Fn.StrVal);
6256 else if (Fn.Kind == ValID::t_GlobalID)
6257 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6259 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6261 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6262 auto *F = dyn_cast<Function>(GV);
6264 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6265 if (F->isDeclaration())
6266 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6268 // Check the basic block.
6269 if (Label.Kind == ValID::t_LocalID)
6270 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6271 if (Label.Kind != ValID::t_LocalName)
6272 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6273 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6275 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6276 if (!isa<BasicBlock>(V))
6277 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6279 return sortUseListOrder(V, Indexes, Loc);