1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/AsmParser/SlotMapping.h"
18 #include "llvm/IR/AutoUpgrade.h"
19 #include "llvm/IR/CallingConv.h"
20 #include "llvm/IR/Constants.h"
21 #include "llvm/IR/DebugInfo.h"
22 #include "llvm/IR/DebugInfoMetadata.h"
23 #include "llvm/IR/DerivedTypes.h"
24 #include "llvm/IR/InlineAsm.h"
25 #include "llvm/IR/Instructions.h"
26 #include "llvm/IR/LLVMContext.h"
27 #include "llvm/IR/Module.h"
28 #include "llvm/IR/Operator.h"
29 #include "llvm/IR/ValueSymbolTable.h"
30 #include "llvm/Support/Dwarf.h"
31 #include "llvm/Support/ErrorHandling.h"
32 #include "llvm/Support/SaveAndRestore.h"
33 #include "llvm/Support/raw_ostream.h"
36 static std::string getTypeString(Type *T) {
38 raw_string_ostream Tmp(Result);
43 /// Run: module ::= toplevelentity*
44 bool LLParser::Run() {
48 return ParseTopLevelEntities() ||
49 ValidateEndOfModule();
52 bool LLParser::parseStandaloneConstantValue(Constant *&C,
53 const SlotMapping *Slots) {
54 restoreParsingState(Slots);
58 if (ParseType(Ty) || parseConstantValue(Ty, C))
60 if (Lex.getKind() != lltok::Eof)
61 return Error(Lex.getLoc(), "expected end of string");
65 void LLParser::restoreParsingState(const SlotMapping *Slots) {
68 NumberedVals = Slots->GlobalValues;
69 NumberedMetadata = Slots->MetadataNodes;
70 for (const auto &I : Slots->NamedTypes)
72 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
73 for (const auto &I : Slots->Types)
75 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
78 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
80 bool LLParser::ValidateEndOfModule() {
81 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
82 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
84 // Handle any function attribute group forward references.
85 for (std::map<Value*, std::vector<unsigned> >::iterator
86 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
89 std::vector<unsigned> &Vec = I->second;
92 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
94 B.merge(NumberedAttrBuilders[*VI]);
96 if (Function *Fn = dyn_cast<Function>(V)) {
97 AttributeSet AS = Fn->getAttributes();
98 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
99 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
100 AS.getFnAttributes());
104 // If the alignment was parsed as an attribute, move to the alignment
106 if (FnAttrs.hasAlignmentAttr()) {
107 Fn->setAlignment(FnAttrs.getAlignment());
108 FnAttrs.removeAttribute(Attribute::Alignment);
111 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
112 AttributeSet::get(Context,
113 AttributeSet::FunctionIndex,
115 Fn->setAttributes(AS);
116 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
117 AttributeSet AS = CI->getAttributes();
118 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
119 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
120 AS.getFnAttributes());
122 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
123 AttributeSet::get(Context,
124 AttributeSet::FunctionIndex,
126 CI->setAttributes(AS);
127 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
128 AttributeSet AS = II->getAttributes();
129 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
130 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
131 AS.getFnAttributes());
133 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
134 AttributeSet::get(Context,
135 AttributeSet::FunctionIndex,
137 II->setAttributes(AS);
139 llvm_unreachable("invalid object with forward attribute group reference");
143 // If there are entries in ForwardRefBlockAddresses at this point, the
144 // function was never defined.
145 if (!ForwardRefBlockAddresses.empty())
146 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
147 "expected function name in blockaddress");
149 for (const auto &NT : NumberedTypes)
150 if (NT.second.second.isValid())
151 return Error(NT.second.second,
152 "use of undefined type '%" + Twine(NT.first) + "'");
154 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
155 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
156 if (I->second.second.isValid())
157 return Error(I->second.second,
158 "use of undefined type named '" + I->getKey() + "'");
160 if (!ForwardRefComdats.empty())
161 return Error(ForwardRefComdats.begin()->second,
162 "use of undefined comdat '$" +
163 ForwardRefComdats.begin()->first + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
180 // Resolve metadata cycles.
181 for (auto &N : NumberedMetadata) {
182 if (N.second && !N.second->isResolved())
183 N.second->resolveCycles();
186 // Look for intrinsic functions and CallInst that need to be upgraded
187 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
188 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
190 UpgradeDebugInfo(*M);
194 // Initialize the slot mapping.
195 // Because by this point we've parsed and validated everything, we can "steal"
196 // the mapping from LLParser as it doesn't need it anymore.
197 Slots->GlobalValues = std::move(NumberedVals);
198 Slots->MetadataNodes = std::move(NumberedMetadata);
199 for (const auto &I : NamedTypes)
200 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
201 for (const auto &I : NumberedTypes)
202 Slots->Types.insert(std::make_pair(I.first, I.second.first));
207 //===----------------------------------------------------------------------===//
208 // Top-Level Entities
209 //===----------------------------------------------------------------------===//
211 bool LLParser::ParseTopLevelEntities() {
213 switch (Lex.getKind()) {
214 default: return TokError("expected top-level entity");
215 case lltok::Eof: return false;
216 case lltok::kw_declare: if (ParseDeclare()) return true; break;
217 case lltok::kw_define: if (ParseDefine()) return true; break;
218 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
219 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
220 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
221 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
222 case lltok::LocalVar: if (ParseNamedType()) return true; break;
223 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
224 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
225 case lltok::ComdatVar: if (parseComdat()) return true; break;
226 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
227 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
229 // The Global variable production with no name can have many different
230 // optional leading prefixes, the production is:
231 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
232 // OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
233 // ('constant'|'global') ...
234 case lltok::kw_private: // OptionalLinkage
235 case lltok::kw_internal: // OptionalLinkage
236 case lltok::kw_weak: // OptionalLinkage
237 case lltok::kw_weak_odr: // OptionalLinkage
238 case lltok::kw_linkonce: // OptionalLinkage
239 case lltok::kw_linkonce_odr: // OptionalLinkage
240 case lltok::kw_appending: // OptionalLinkage
241 case lltok::kw_common: // OptionalLinkage
242 case lltok::kw_extern_weak: // OptionalLinkage
243 case lltok::kw_external: // OptionalLinkage
244 case lltok::kw_default: // OptionalVisibility
245 case lltok::kw_hidden: // OptionalVisibility
246 case lltok::kw_protected: // OptionalVisibility
247 case lltok::kw_dllimport: // OptionalDLLStorageClass
248 case lltok::kw_dllexport: // OptionalDLLStorageClass
249 case lltok::kw_thread_local: // OptionalThreadLocal
250 case lltok::kw_addrspace: // OptionalAddrSpace
251 case lltok::kw_constant: // GlobalType
252 case lltok::kw_global: { // GlobalType
253 unsigned Linkage, Visibility, DLLStorageClass;
255 GlobalVariable::ThreadLocalMode TLM;
257 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
258 ParseOptionalVisibility(Visibility) ||
259 ParseOptionalDLLStorageClass(DLLStorageClass) ||
260 ParseOptionalThreadLocal(TLM) ||
261 parseOptionalUnnamedAddr(UnnamedAddr) ||
262 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
263 DLLStorageClass, TLM, UnnamedAddr))
268 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
269 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
270 case lltok::kw_uselistorder_bb:
271 if (ParseUseListOrderBB()) return true; break;
278 /// ::= 'module' 'asm' STRINGCONSTANT
279 bool LLParser::ParseModuleAsm() {
280 assert(Lex.getKind() == lltok::kw_module);
284 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
285 ParseStringConstant(AsmStr)) return true;
287 M->appendModuleInlineAsm(AsmStr);
292 /// ::= 'target' 'triple' '=' STRINGCONSTANT
293 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
294 bool LLParser::ParseTargetDefinition() {
295 assert(Lex.getKind() == lltok::kw_target);
298 default: return TokError("unknown target property");
299 case lltok::kw_triple:
301 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
302 ParseStringConstant(Str))
304 M->setTargetTriple(Str);
306 case lltok::kw_datalayout:
308 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
309 ParseStringConstant(Str))
311 M->setDataLayout(Str);
317 /// ::= 'deplibs' '=' '[' ']'
318 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
319 /// FIXME: Remove in 4.0. Currently parse, but ignore.
320 bool LLParser::ParseDepLibs() {
321 assert(Lex.getKind() == lltok::kw_deplibs);
323 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
324 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
327 if (EatIfPresent(lltok::rsquare))
332 if (ParseStringConstant(Str)) return true;
333 } while (EatIfPresent(lltok::comma));
335 return ParseToken(lltok::rsquare, "expected ']' at end of list");
338 /// ParseUnnamedType:
339 /// ::= LocalVarID '=' 'type' type
340 bool LLParser::ParseUnnamedType() {
341 LocTy TypeLoc = Lex.getLoc();
342 unsigned TypeID = Lex.getUIntVal();
343 Lex.Lex(); // eat LocalVarID;
345 if (ParseToken(lltok::equal, "expected '=' after name") ||
346 ParseToken(lltok::kw_type, "expected 'type' after '='"))
349 Type *Result = nullptr;
350 if (ParseStructDefinition(TypeLoc, "",
351 NumberedTypes[TypeID], Result)) return true;
353 if (!isa<StructType>(Result)) {
354 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
356 return Error(TypeLoc, "non-struct types may not be recursive");
357 Entry.first = Result;
358 Entry.second = SMLoc();
366 /// ::= LocalVar '=' 'type' type
367 bool LLParser::ParseNamedType() {
368 std::string Name = Lex.getStrVal();
369 LocTy NameLoc = Lex.getLoc();
370 Lex.Lex(); // eat LocalVar.
372 if (ParseToken(lltok::equal, "expected '=' after name") ||
373 ParseToken(lltok::kw_type, "expected 'type' after name"))
376 Type *Result = nullptr;
377 if (ParseStructDefinition(NameLoc, Name,
378 NamedTypes[Name], Result)) return true;
380 if (!isa<StructType>(Result)) {
381 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
383 return Error(NameLoc, "non-struct types may not be recursive");
384 Entry.first = Result;
385 Entry.second = SMLoc();
393 /// ::= 'declare' FunctionHeader
394 bool LLParser::ParseDeclare() {
395 assert(Lex.getKind() == lltok::kw_declare);
399 return ParseFunctionHeader(F, false);
403 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
404 bool LLParser::ParseDefine() {
405 assert(Lex.getKind() == lltok::kw_define);
409 return ParseFunctionHeader(F, true) ||
410 ParseOptionalFunctionMetadata(*F) ||
411 ParseFunctionBody(*F);
417 bool LLParser::ParseGlobalType(bool &IsConstant) {
418 if (Lex.getKind() == lltok::kw_constant)
420 else if (Lex.getKind() == lltok::kw_global)
424 return TokError("expected 'global' or 'constant'");
430 /// ParseUnnamedGlobal:
431 /// OptionalVisibility ALIAS ...
432 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
433 /// ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
436 /// ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility, DLLStorageClass;
455 GlobalVariable::ThreadLocalMode TLM;
457 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
458 ParseOptionalVisibility(Visibility) ||
459 ParseOptionalDLLStorageClass(DLLStorageClass) ||
460 ParseOptionalThreadLocal(TLM) ||
461 parseOptionalUnnamedAddr(UnnamedAddr))
464 if (Lex.getKind() != lltok::kw_alias)
465 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
466 DLLStorageClass, TLM, UnnamedAddr);
467 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
471 /// ParseNamedGlobal:
472 /// GlobalVar '=' OptionalVisibility ALIAS ...
473 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
474 /// ... -> global variable
475 bool LLParser::ParseNamedGlobal() {
476 assert(Lex.getKind() == lltok::GlobalVar);
477 LocTy NameLoc = Lex.getLoc();
478 std::string Name = Lex.getStrVal();
482 unsigned Linkage, Visibility, DLLStorageClass;
483 GlobalVariable::ThreadLocalMode TLM;
485 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
486 ParseOptionalLinkage(Linkage, HasLinkage) ||
487 ParseOptionalVisibility(Visibility) ||
488 ParseOptionalDLLStorageClass(DLLStorageClass) ||
489 ParseOptionalThreadLocal(TLM) ||
490 parseOptionalUnnamedAddr(UnnamedAddr))
493 if (Lex.getKind() != lltok::kw_alias)
494 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
495 DLLStorageClass, TLM, UnnamedAddr);
497 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
501 bool LLParser::parseComdat() {
502 assert(Lex.getKind() == lltok::ComdatVar);
503 std::string Name = Lex.getStrVal();
504 LocTy NameLoc = Lex.getLoc();
507 if (ParseToken(lltok::equal, "expected '=' here"))
510 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
511 return TokError("expected comdat type");
513 Comdat::SelectionKind SK;
514 switch (Lex.getKind()) {
516 return TokError("unknown selection kind");
520 case lltok::kw_exactmatch:
521 SK = Comdat::ExactMatch;
523 case lltok::kw_largest:
524 SK = Comdat::Largest;
526 case lltok::kw_noduplicates:
527 SK = Comdat::NoDuplicates;
529 case lltok::kw_samesize:
530 SK = Comdat::SameSize;
535 // See if the comdat was forward referenced, if so, use the comdat.
536 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
537 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
538 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
539 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
542 if (I != ComdatSymTab.end())
545 C = M->getOrInsertComdat(Name);
546 C->setSelectionKind(SK);
552 // ::= '!' STRINGCONSTANT
553 bool LLParser::ParseMDString(MDString *&Result) {
555 if (ParseStringConstant(Str)) return true;
556 llvm::UpgradeMDStringConstant(Str);
557 Result = MDString::get(Context, Str);
562 // ::= '!' MDNodeNumber
563 bool LLParser::ParseMDNodeID(MDNode *&Result) {
564 // !{ ..., !42, ... }
566 if (ParseUInt32(MID))
569 // If not a forward reference, just return it now.
570 if (NumberedMetadata.count(MID)) {
571 Result = NumberedMetadata[MID];
575 // Otherwise, create MDNode forward reference.
576 auto &FwdRef = ForwardRefMDNodes[MID];
577 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
579 Result = FwdRef.first.get();
580 NumberedMetadata[MID].reset(Result);
584 /// ParseNamedMetadata:
585 /// !foo = !{ !1, !2 }
586 bool LLParser::ParseNamedMetadata() {
587 assert(Lex.getKind() == lltok::MetadataVar);
588 std::string Name = Lex.getStrVal();
591 if (ParseToken(lltok::equal, "expected '=' here") ||
592 ParseToken(lltok::exclaim, "Expected '!' here") ||
593 ParseToken(lltok::lbrace, "Expected '{' here"))
596 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
597 if (Lex.getKind() != lltok::rbrace)
599 if (ParseToken(lltok::exclaim, "Expected '!' here"))
603 if (ParseMDNodeID(N)) return true;
605 } while (EatIfPresent(lltok::comma));
607 return ParseToken(lltok::rbrace, "expected end of metadata node");
610 /// ParseStandaloneMetadata:
612 bool LLParser::ParseStandaloneMetadata() {
613 assert(Lex.getKind() == lltok::exclaim);
615 unsigned MetadataID = 0;
618 if (ParseUInt32(MetadataID) ||
619 ParseToken(lltok::equal, "expected '=' here"))
622 // Detect common error, from old metadata syntax.
623 if (Lex.getKind() == lltok::Type)
624 return TokError("unexpected type in metadata definition");
626 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
627 if (Lex.getKind() == lltok::MetadataVar) {
628 if (ParseSpecializedMDNode(Init, IsDistinct))
630 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
631 ParseMDTuple(Init, IsDistinct))
634 // See if this was forward referenced, if so, handle it.
635 auto FI = ForwardRefMDNodes.find(MetadataID);
636 if (FI != ForwardRefMDNodes.end()) {
637 FI->second.first->replaceAllUsesWith(Init);
638 ForwardRefMDNodes.erase(FI);
640 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
642 if (NumberedMetadata.count(MetadataID))
643 return TokError("Metadata id is already used");
644 NumberedMetadata[MetadataID].reset(Init);
650 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
651 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
652 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
656 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
657 /// OptionalDLLStorageClass OptionalThreadLocal
658 /// OptionalUnnamedAddr 'alias' Aliasee
663 /// Everything through OptionalUnnamedAddr has already been parsed.
665 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
666 unsigned Visibility, unsigned DLLStorageClass,
667 GlobalVariable::ThreadLocalMode TLM,
669 assert(Lex.getKind() == lltok::kw_alias);
672 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
674 if(!GlobalAlias::isValidLinkage(Linkage))
675 return Error(NameLoc, "invalid linkage type for alias");
677 if (!isValidVisibilityForLinkage(Visibility, L))
678 return Error(NameLoc,
679 "symbol with local linkage must have default visibility");
682 LocTy ExplicitTypeLoc = Lex.getLoc();
684 ParseToken(lltok::comma, "expected comma after alias's type"))
688 LocTy AliaseeLoc = Lex.getLoc();
689 if (Lex.getKind() != lltok::kw_bitcast &&
690 Lex.getKind() != lltok::kw_getelementptr &&
691 Lex.getKind() != lltok::kw_addrspacecast &&
692 Lex.getKind() != lltok::kw_inttoptr) {
693 if (ParseGlobalTypeAndValue(Aliasee))
696 // The bitcast dest type is not present, it is implied by the dest type.
700 if (ID.Kind != ValID::t_Constant)
701 return Error(AliaseeLoc, "invalid aliasee");
702 Aliasee = ID.ConstantVal;
705 Type *AliaseeType = Aliasee->getType();
706 auto *PTy = dyn_cast<PointerType>(AliaseeType);
708 return Error(AliaseeLoc, "An alias must have pointer type");
709 unsigned AddrSpace = PTy->getAddressSpace();
711 if (Ty != PTy->getElementType())
714 "explicit pointee type doesn't match operand's pointee type");
716 // Okay, create the alias but do not insert it into the module yet.
717 std::unique_ptr<GlobalAlias> GA(
718 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
719 Name, Aliasee, /*Parent*/ nullptr));
720 GA->setThreadLocalMode(TLM);
721 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
722 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
723 GA->setUnnamedAddr(UnnamedAddr);
726 NumberedVals.push_back(GA.get());
728 // See if this value already exists in the symbol table. If so, it is either
729 // a redefinition or a definition of a forward reference.
730 if (GlobalValue *Val = M->getNamedValue(Name)) {
731 // See if this was a redefinition. If so, there is no entry in
733 auto I = ForwardRefVals.find(Name);
734 if (I == ForwardRefVals.end())
735 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
737 // Otherwise, this was a definition of forward ref. Verify that types
739 if (Val->getType() != GA->getType())
740 return Error(NameLoc,
741 "forward reference and definition of alias have different types");
743 // If they agree, just RAUW the old value with the alias and remove the
745 Val->replaceAllUsesWith(GA.get());
746 Val->eraseFromParent();
747 ForwardRefVals.erase(I);
750 // Insert into the module, we know its name won't collide now.
751 M->getAliasList().push_back(GA.get());
752 assert(GA->getName() == Name && "Should not be a name conflict!");
754 // The module owns this now
761 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
762 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
763 /// OptionalExternallyInitialized GlobalType Type Const
764 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
765 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
766 /// OptionalExternallyInitialized GlobalType Type Const
768 /// Everything up to and including OptionalUnnamedAddr has been parsed
771 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
772 unsigned Linkage, bool HasLinkage,
773 unsigned Visibility, unsigned DLLStorageClass,
774 GlobalVariable::ThreadLocalMode TLM,
776 if (!isValidVisibilityForLinkage(Visibility, Linkage))
777 return Error(NameLoc,
778 "symbol with local linkage must have default visibility");
781 bool IsConstant, IsExternallyInitialized;
782 LocTy IsExternallyInitializedLoc;
786 if (ParseOptionalAddrSpace(AddrSpace) ||
787 ParseOptionalToken(lltok::kw_externally_initialized,
788 IsExternallyInitialized,
789 &IsExternallyInitializedLoc) ||
790 ParseGlobalType(IsConstant) ||
791 ParseType(Ty, TyLoc))
794 // If the linkage is specified and is external, then no initializer is
796 Constant *Init = nullptr;
797 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
798 Linkage != GlobalValue::ExternalLinkage)) {
799 if (ParseGlobalValue(Ty, Init))
803 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
804 return Error(TyLoc, "invalid type for global variable");
806 GlobalValue *GVal = nullptr;
808 // See if the global was forward referenced, if so, use the global.
810 GVal = M->getNamedValue(Name);
812 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
813 return Error(NameLoc, "redefinition of global '@" + Name + "'");
816 auto I = ForwardRefValIDs.find(NumberedVals.size());
817 if (I != ForwardRefValIDs.end()) {
818 GVal = I->second.first;
819 ForwardRefValIDs.erase(I);
825 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
826 Name, nullptr, GlobalVariable::NotThreadLocal,
829 if (GVal->getValueType() != Ty)
831 "forward reference and definition of global have different types");
833 GV = cast<GlobalVariable>(GVal);
835 // Move the forward-reference to the correct spot in the module.
836 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
840 NumberedVals.push_back(GV);
842 // Set the parsed properties on the global.
844 GV->setInitializer(Init);
845 GV->setConstant(IsConstant);
846 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
847 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
848 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
849 GV->setExternallyInitialized(IsExternallyInitialized);
850 GV->setThreadLocalMode(TLM);
851 GV->setUnnamedAddr(UnnamedAddr);
853 // Parse attributes on the global.
854 while (Lex.getKind() == lltok::comma) {
857 if (Lex.getKind() == lltok::kw_section) {
859 GV->setSection(Lex.getStrVal());
860 if (ParseToken(lltok::StringConstant, "expected global section string"))
862 } else if (Lex.getKind() == lltok::kw_align) {
864 if (ParseOptionalAlignment(Alignment)) return true;
865 GV->setAlignment(Alignment);
868 if (parseOptionalComdat(Name, C))
873 return TokError("unknown global variable property!");
880 /// ParseUnnamedAttrGrp
881 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
882 bool LLParser::ParseUnnamedAttrGrp() {
883 assert(Lex.getKind() == lltok::kw_attributes);
884 LocTy AttrGrpLoc = Lex.getLoc();
887 if (Lex.getKind() != lltok::AttrGrpID)
888 return TokError("expected attribute group id");
890 unsigned VarID = Lex.getUIntVal();
891 std::vector<unsigned> unused;
895 if (ParseToken(lltok::equal, "expected '=' here") ||
896 ParseToken(lltok::lbrace, "expected '{' here") ||
897 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
899 ParseToken(lltok::rbrace, "expected end of attribute group"))
902 if (!NumberedAttrBuilders[VarID].hasAttributes())
903 return Error(AttrGrpLoc, "attribute group has no attributes");
908 /// ParseFnAttributeValuePairs
909 /// ::= <attr> | <attr> '=' <value>
910 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
911 std::vector<unsigned> &FwdRefAttrGrps,
912 bool inAttrGrp, LocTy &BuiltinLoc) {
913 bool HaveError = false;
918 lltok::Kind Token = Lex.getKind();
919 if (Token == lltok::kw_builtin)
920 BuiltinLoc = Lex.getLoc();
923 if (!inAttrGrp) return HaveError;
924 return Error(Lex.getLoc(), "unterminated attribute group");
929 case lltok::AttrGrpID: {
930 // Allow a function to reference an attribute group:
932 // define void @foo() #1 { ... }
936 "cannot have an attribute group reference in an attribute group");
938 unsigned AttrGrpNum = Lex.getUIntVal();
939 if (inAttrGrp) break;
941 // Save the reference to the attribute group. We'll fill it in later.
942 FwdRefAttrGrps.push_back(AttrGrpNum);
945 // Target-dependent attributes:
946 case lltok::StringConstant: {
947 if (ParseStringAttribute(B))
952 // Target-independent attributes:
953 case lltok::kw_align: {
954 // As a hack, we allow function alignment to be initially parsed as an
955 // attribute on a function declaration/definition or added to an attribute
956 // group and later moved to the alignment field.
960 if (ParseToken(lltok::equal, "expected '=' here") ||
961 ParseUInt32(Alignment))
964 if (ParseOptionalAlignment(Alignment))
967 B.addAlignmentAttr(Alignment);
970 case lltok::kw_alignstack: {
974 if (ParseToken(lltok::equal, "expected '=' here") ||
975 ParseUInt32(Alignment))
978 if (ParseOptionalStackAlignment(Alignment))
981 B.addStackAlignmentAttr(Alignment);
984 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
985 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
986 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
987 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
988 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
989 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
990 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
991 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
992 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
993 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
994 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
995 case lltok::kw_noimplicitfloat:
996 B.addAttribute(Attribute::NoImplicitFloat); break;
997 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
998 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
999 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1000 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1001 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1002 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1003 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1004 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1005 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1006 case lltok::kw_returns_twice:
1007 B.addAttribute(Attribute::ReturnsTwice); break;
1008 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1009 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1010 case lltok::kw_sspstrong:
1011 B.addAttribute(Attribute::StackProtectStrong); break;
1012 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1013 case lltok::kw_sanitize_address:
1014 B.addAttribute(Attribute::SanitizeAddress); break;
1015 case lltok::kw_sanitize_thread:
1016 B.addAttribute(Attribute::SanitizeThread); break;
1017 case lltok::kw_sanitize_memory:
1018 B.addAttribute(Attribute::SanitizeMemory); break;
1019 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1022 case lltok::kw_inreg:
1023 case lltok::kw_signext:
1024 case lltok::kw_zeroext:
1027 "invalid use of attribute on a function");
1029 case lltok::kw_byval:
1030 case lltok::kw_dereferenceable:
1031 case lltok::kw_dereferenceable_or_null:
1032 case lltok::kw_inalloca:
1033 case lltok::kw_nest:
1034 case lltok::kw_noalias:
1035 case lltok::kw_nocapture:
1036 case lltok::kw_nonnull:
1037 case lltok::kw_returned:
1038 case lltok::kw_sret:
1041 "invalid use of parameter-only attribute on a function");
1049 //===----------------------------------------------------------------------===//
1050 // GlobalValue Reference/Resolution Routines.
1051 //===----------------------------------------------------------------------===//
1053 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1054 const std::string &Name) {
1055 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1056 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1058 return new GlobalVariable(*M, PTy->getElementType(), false,
1059 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1060 nullptr, GlobalVariable::NotThreadLocal,
1061 PTy->getAddressSpace());
1064 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1065 /// forward reference record if needed. This can return null if the value
1066 /// exists but does not have the right type.
1067 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1069 PointerType *PTy = dyn_cast<PointerType>(Ty);
1071 Error(Loc, "global variable reference must have pointer type");
1075 // Look this name up in the normal function symbol table.
1077 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1079 // If this is a forward reference for the value, see if we already created a
1080 // forward ref record.
1082 auto I = ForwardRefVals.find(Name);
1083 if (I != ForwardRefVals.end())
1084 Val = I->second.first;
1087 // If we have the value in the symbol table or fwd-ref table, return it.
1089 if (Val->getType() == Ty) return Val;
1090 Error(Loc, "'@" + Name + "' defined with type '" +
1091 getTypeString(Val->getType()) + "'");
1095 // Otherwise, create a new forward reference for this value and remember it.
1096 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1097 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1101 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1102 PointerType *PTy = dyn_cast<PointerType>(Ty);
1104 Error(Loc, "global variable reference must have pointer type");
1108 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1110 // If this is a forward reference for the value, see if we already created a
1111 // forward ref record.
1113 auto I = ForwardRefValIDs.find(ID);
1114 if (I != ForwardRefValIDs.end())
1115 Val = I->second.first;
1118 // If we have the value in the symbol table or fwd-ref table, return it.
1120 if (Val->getType() == Ty) return Val;
1121 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1122 getTypeString(Val->getType()) + "'");
1126 // Otherwise, create a new forward reference for this value and remember it.
1127 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1128 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1133 //===----------------------------------------------------------------------===//
1134 // Comdat Reference/Resolution Routines.
1135 //===----------------------------------------------------------------------===//
1137 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1138 // Look this name up in the comdat symbol table.
1139 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1140 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1141 if (I != ComdatSymTab.end())
1144 // Otherwise, create a new forward reference for this value and remember it.
1145 Comdat *C = M->getOrInsertComdat(Name);
1146 ForwardRefComdats[Name] = Loc;
1151 //===----------------------------------------------------------------------===//
1153 //===----------------------------------------------------------------------===//
1155 /// ParseToken - If the current token has the specified kind, eat it and return
1156 /// success. Otherwise, emit the specified error and return failure.
1157 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1158 if (Lex.getKind() != T)
1159 return TokError(ErrMsg);
1164 /// ParseStringConstant
1165 /// ::= StringConstant
1166 bool LLParser::ParseStringConstant(std::string &Result) {
1167 if (Lex.getKind() != lltok::StringConstant)
1168 return TokError("expected string constant");
1169 Result = Lex.getStrVal();
1176 bool LLParser::ParseUInt32(unsigned &Val) {
1177 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1178 return TokError("expected integer");
1179 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1180 if (Val64 != unsigned(Val64))
1181 return TokError("expected 32-bit integer (too large)");
1189 bool LLParser::ParseUInt64(uint64_t &Val) {
1190 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1191 return TokError("expected integer");
1192 Val = Lex.getAPSIntVal().getLimitedValue();
1198 /// := 'localdynamic'
1199 /// := 'initialexec'
1201 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1202 switch (Lex.getKind()) {
1204 return TokError("expected localdynamic, initialexec or localexec");
1205 case lltok::kw_localdynamic:
1206 TLM = GlobalVariable::LocalDynamicTLSModel;
1208 case lltok::kw_initialexec:
1209 TLM = GlobalVariable::InitialExecTLSModel;
1211 case lltok::kw_localexec:
1212 TLM = GlobalVariable::LocalExecTLSModel;
1220 /// ParseOptionalThreadLocal
1222 /// := 'thread_local'
1223 /// := 'thread_local' '(' tlsmodel ')'
1224 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1225 TLM = GlobalVariable::NotThreadLocal;
1226 if (!EatIfPresent(lltok::kw_thread_local))
1229 TLM = GlobalVariable::GeneralDynamicTLSModel;
1230 if (Lex.getKind() == lltok::lparen) {
1232 return ParseTLSModel(TLM) ||
1233 ParseToken(lltok::rparen, "expected ')' after thread local model");
1238 /// ParseOptionalAddrSpace
1240 /// := 'addrspace' '(' uint32 ')'
1241 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1243 if (!EatIfPresent(lltok::kw_addrspace))
1245 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1246 ParseUInt32(AddrSpace) ||
1247 ParseToken(lltok::rparen, "expected ')' in address space");
1250 /// ParseStringAttribute
1251 /// := StringConstant
1252 /// := StringConstant '=' StringConstant
1253 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1254 std::string Attr = Lex.getStrVal();
1257 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1259 B.addAttribute(Attr, Val);
1263 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1264 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1265 bool HaveError = false;
1270 lltok::Kind Token = Lex.getKind();
1272 default: // End of attributes.
1274 case lltok::StringConstant: {
1275 if (ParseStringAttribute(B))
1279 case lltok::kw_align: {
1281 if (ParseOptionalAlignment(Alignment))
1283 B.addAlignmentAttr(Alignment);
1286 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1287 case lltok::kw_dereferenceable: {
1289 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1291 B.addDereferenceableAttr(Bytes);
1294 case lltok::kw_dereferenceable_or_null: {
1296 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1298 B.addDereferenceableOrNullAttr(Bytes);
1301 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1302 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1303 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1304 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1305 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1306 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1307 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1308 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1309 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1310 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1311 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1312 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1314 case lltok::kw_alignstack:
1315 case lltok::kw_alwaysinline:
1316 case lltok::kw_argmemonly:
1317 case lltok::kw_builtin:
1318 case lltok::kw_inlinehint:
1319 case lltok::kw_jumptable:
1320 case lltok::kw_minsize:
1321 case lltok::kw_naked:
1322 case lltok::kw_nobuiltin:
1323 case lltok::kw_noduplicate:
1324 case lltok::kw_noimplicitfloat:
1325 case lltok::kw_noinline:
1326 case lltok::kw_nonlazybind:
1327 case lltok::kw_noredzone:
1328 case lltok::kw_noreturn:
1329 case lltok::kw_nounwind:
1330 case lltok::kw_optnone:
1331 case lltok::kw_optsize:
1332 case lltok::kw_returns_twice:
1333 case lltok::kw_sanitize_address:
1334 case lltok::kw_sanitize_memory:
1335 case lltok::kw_sanitize_thread:
1337 case lltok::kw_sspreq:
1338 case lltok::kw_sspstrong:
1339 case lltok::kw_safestack:
1340 case lltok::kw_uwtable:
1341 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1349 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1350 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1351 bool HaveError = false;
1356 lltok::Kind Token = Lex.getKind();
1358 default: // End of attributes.
1360 case lltok::StringConstant: {
1361 if (ParseStringAttribute(B))
1365 case lltok::kw_dereferenceable: {
1367 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1369 B.addDereferenceableAttr(Bytes);
1372 case lltok::kw_dereferenceable_or_null: {
1374 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1376 B.addDereferenceableOrNullAttr(Bytes);
1379 case lltok::kw_align: {
1381 if (ParseOptionalAlignment(Alignment))
1383 B.addAlignmentAttr(Alignment);
1386 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1387 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1388 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1389 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1390 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1393 case lltok::kw_byval:
1394 case lltok::kw_inalloca:
1395 case lltok::kw_nest:
1396 case lltok::kw_nocapture:
1397 case lltok::kw_returned:
1398 case lltok::kw_sret:
1399 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1402 case lltok::kw_alignstack:
1403 case lltok::kw_alwaysinline:
1404 case lltok::kw_argmemonly:
1405 case lltok::kw_builtin:
1406 case lltok::kw_cold:
1407 case lltok::kw_inlinehint:
1408 case lltok::kw_jumptable:
1409 case lltok::kw_minsize:
1410 case lltok::kw_naked:
1411 case lltok::kw_nobuiltin:
1412 case lltok::kw_noduplicate:
1413 case lltok::kw_noimplicitfloat:
1414 case lltok::kw_noinline:
1415 case lltok::kw_nonlazybind:
1416 case lltok::kw_noredzone:
1417 case lltok::kw_noreturn:
1418 case lltok::kw_nounwind:
1419 case lltok::kw_optnone:
1420 case lltok::kw_optsize:
1421 case lltok::kw_returns_twice:
1422 case lltok::kw_sanitize_address:
1423 case lltok::kw_sanitize_memory:
1424 case lltok::kw_sanitize_thread:
1426 case lltok::kw_sspreq:
1427 case lltok::kw_sspstrong:
1428 case lltok::kw_safestack:
1429 case lltok::kw_uwtable:
1430 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1433 case lltok::kw_readnone:
1434 case lltok::kw_readonly:
1435 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1442 /// ParseOptionalLinkage
1449 /// ::= 'linkonce_odr'
1450 /// ::= 'available_externally'
1453 /// ::= 'extern_weak'
1455 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1457 switch (Lex.getKind()) {
1458 default: Res=GlobalValue::ExternalLinkage; return false;
1459 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1460 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1461 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1462 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1463 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1464 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1465 case lltok::kw_available_externally:
1466 Res = GlobalValue::AvailableExternallyLinkage;
1468 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1469 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1470 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1471 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1478 /// ParseOptionalVisibility
1484 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1485 switch (Lex.getKind()) {
1486 default: Res = GlobalValue::DefaultVisibility; return false;
1487 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1488 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1489 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1495 /// ParseOptionalDLLStorageClass
1500 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1501 switch (Lex.getKind()) {
1502 default: Res = GlobalValue::DefaultStorageClass; return false;
1503 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1504 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1510 /// ParseOptionalCallingConv
1514 /// ::= 'intel_ocl_bicc'
1516 /// ::= 'x86_stdcallcc'
1517 /// ::= 'x86_fastcallcc'
1518 /// ::= 'x86_thiscallcc'
1519 /// ::= 'x86_vectorcallcc'
1520 /// ::= 'arm_apcscc'
1521 /// ::= 'arm_aapcscc'
1522 /// ::= 'arm_aapcs_vfpcc'
1523 /// ::= 'msp430_intrcc'
1524 /// ::= 'ptx_kernel'
1525 /// ::= 'ptx_device'
1527 /// ::= 'spir_kernel'
1528 /// ::= 'x86_64_sysvcc'
1529 /// ::= 'x86_64_win64cc'
1530 /// ::= 'webkit_jscc'
1532 /// ::= 'preserve_mostcc'
1533 /// ::= 'preserve_allcc'
1539 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1540 switch (Lex.getKind()) {
1541 default: CC = CallingConv::C; return false;
1542 case lltok::kw_ccc: CC = CallingConv::C; break;
1543 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1544 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1545 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1546 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1547 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1548 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1549 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1550 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1551 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1552 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1553 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1554 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1555 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1556 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1557 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1558 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1559 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1560 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1561 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1562 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1563 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1564 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1565 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1566 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1567 case lltok::kw_cc: {
1569 return ParseUInt32(CC);
1577 /// ParseMetadataAttachment
1579 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1580 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1582 std::string Name = Lex.getStrVal();
1583 Kind = M->getMDKindID(Name);
1586 return ParseMDNode(MD);
1589 /// ParseInstructionMetadata
1590 /// ::= !dbg !42 (',' !dbg !57)*
1591 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1593 if (Lex.getKind() != lltok::MetadataVar)
1594 return TokError("expected metadata after comma");
1598 if (ParseMetadataAttachment(MDK, N))
1601 Inst.setMetadata(MDK, N);
1602 if (MDK == LLVMContext::MD_tbaa)
1603 InstsWithTBAATag.push_back(&Inst);
1605 // If this is the end of the list, we're done.
1606 } while (EatIfPresent(lltok::comma));
1610 /// ParseOptionalFunctionMetadata
1612 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1613 while (Lex.getKind() == lltok::MetadataVar) {
1616 if (ParseMetadataAttachment(MDK, N))
1619 F.setMetadata(MDK, N);
1624 /// ParseOptionalAlignment
1627 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1629 if (!EatIfPresent(lltok::kw_align))
1631 LocTy AlignLoc = Lex.getLoc();
1632 if (ParseUInt32(Alignment)) return true;
1633 if (!isPowerOf2_32(Alignment))
1634 return Error(AlignLoc, "alignment is not a power of two");
1635 if (Alignment > Value::MaximumAlignment)
1636 return Error(AlignLoc, "huge alignments are not supported yet");
1640 /// ParseOptionalDerefAttrBytes
1642 /// ::= AttrKind '(' 4 ')'
1644 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1645 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1647 assert((AttrKind == lltok::kw_dereferenceable ||
1648 AttrKind == lltok::kw_dereferenceable_or_null) &&
1652 if (!EatIfPresent(AttrKind))
1654 LocTy ParenLoc = Lex.getLoc();
1655 if (!EatIfPresent(lltok::lparen))
1656 return Error(ParenLoc, "expected '('");
1657 LocTy DerefLoc = Lex.getLoc();
1658 if (ParseUInt64(Bytes)) return true;
1659 ParenLoc = Lex.getLoc();
1660 if (!EatIfPresent(lltok::rparen))
1661 return Error(ParenLoc, "expected ')'");
1663 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1667 /// ParseOptionalCommaAlign
1671 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1673 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1674 bool &AteExtraComma) {
1675 AteExtraComma = false;
1676 while (EatIfPresent(lltok::comma)) {
1677 // Metadata at the end is an early exit.
1678 if (Lex.getKind() == lltok::MetadataVar) {
1679 AteExtraComma = true;
1683 if (Lex.getKind() != lltok::kw_align)
1684 return Error(Lex.getLoc(), "expected metadata or 'align'");
1686 if (ParseOptionalAlignment(Alignment)) return true;
1692 /// ParseScopeAndOrdering
1693 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1696 /// This sets Scope and Ordering to the parsed values.
1697 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1698 AtomicOrdering &Ordering) {
1702 Scope = CrossThread;
1703 if (EatIfPresent(lltok::kw_singlethread))
1704 Scope = SingleThread;
1706 return ParseOrdering(Ordering);
1710 /// ::= AtomicOrdering
1712 /// This sets Ordering to the parsed value.
1713 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1714 switch (Lex.getKind()) {
1715 default: return TokError("Expected ordering on atomic instruction");
1716 case lltok::kw_unordered: Ordering = Unordered; break;
1717 case lltok::kw_monotonic: Ordering = Monotonic; break;
1718 case lltok::kw_acquire: Ordering = Acquire; break;
1719 case lltok::kw_release: Ordering = Release; break;
1720 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1721 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1727 /// ParseOptionalStackAlignment
1729 /// ::= 'alignstack' '(' 4 ')'
1730 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1732 if (!EatIfPresent(lltok::kw_alignstack))
1734 LocTy ParenLoc = Lex.getLoc();
1735 if (!EatIfPresent(lltok::lparen))
1736 return Error(ParenLoc, "expected '('");
1737 LocTy AlignLoc = Lex.getLoc();
1738 if (ParseUInt32(Alignment)) return true;
1739 ParenLoc = Lex.getLoc();
1740 if (!EatIfPresent(lltok::rparen))
1741 return Error(ParenLoc, "expected ')'");
1742 if (!isPowerOf2_32(Alignment))
1743 return Error(AlignLoc, "stack alignment is not a power of two");
1747 /// ParseIndexList - This parses the index list for an insert/extractvalue
1748 /// instruction. This sets AteExtraComma in the case where we eat an extra
1749 /// comma at the end of the line and find that it is followed by metadata.
1750 /// Clients that don't allow metadata can call the version of this function that
1751 /// only takes one argument.
1754 /// ::= (',' uint32)+
1756 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1757 bool &AteExtraComma) {
1758 AteExtraComma = false;
1760 if (Lex.getKind() != lltok::comma)
1761 return TokError("expected ',' as start of index list");
1763 while (EatIfPresent(lltok::comma)) {
1764 if (Lex.getKind() == lltok::MetadataVar) {
1765 if (Indices.empty()) return TokError("expected index");
1766 AteExtraComma = true;
1770 if (ParseUInt32(Idx)) return true;
1771 Indices.push_back(Idx);
1777 //===----------------------------------------------------------------------===//
1779 //===----------------------------------------------------------------------===//
1781 /// ParseType - Parse a type.
1782 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1783 SMLoc TypeLoc = Lex.getLoc();
1784 switch (Lex.getKind()) {
1786 return TokError(Msg);
1788 // Type ::= 'float' | 'void' (etc)
1789 Result = Lex.getTyVal();
1793 // Type ::= StructType
1794 if (ParseAnonStructType(Result, false))
1797 case lltok::lsquare:
1798 // Type ::= '[' ... ']'
1799 Lex.Lex(); // eat the lsquare.
1800 if (ParseArrayVectorType(Result, false))
1803 case lltok::less: // Either vector or packed struct.
1804 // Type ::= '<' ... '>'
1806 if (Lex.getKind() == lltok::lbrace) {
1807 if (ParseAnonStructType(Result, true) ||
1808 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1810 } else if (ParseArrayVectorType(Result, true))
1813 case lltok::LocalVar: {
1815 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1817 // If the type hasn't been defined yet, create a forward definition and
1818 // remember where that forward def'n was seen (in case it never is defined).
1820 Entry.first = StructType::create(Context, Lex.getStrVal());
1821 Entry.second = Lex.getLoc();
1823 Result = Entry.first;
1828 case lltok::LocalVarID: {
1830 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1832 // If the type hasn't been defined yet, create a forward definition and
1833 // remember where that forward def'n was seen (in case it never is defined).
1835 Entry.first = StructType::create(Context);
1836 Entry.second = Lex.getLoc();
1838 Result = Entry.first;
1844 // Parse the type suffixes.
1846 switch (Lex.getKind()) {
1849 if (!AllowVoid && Result->isVoidTy())
1850 return Error(TypeLoc, "void type only allowed for function results");
1853 // Type ::= Type '*'
1855 if (Result->isLabelTy())
1856 return TokError("basic block pointers are invalid");
1857 if (Result->isVoidTy())
1858 return TokError("pointers to void are invalid - use i8* instead");
1859 if (!PointerType::isValidElementType(Result))
1860 return TokError("pointer to this type is invalid");
1861 Result = PointerType::getUnqual(Result);
1865 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1866 case lltok::kw_addrspace: {
1867 if (Result->isLabelTy())
1868 return TokError("basic block pointers are invalid");
1869 if (Result->isVoidTy())
1870 return TokError("pointers to void are invalid; use i8* instead");
1871 if (!PointerType::isValidElementType(Result))
1872 return TokError("pointer to this type is invalid");
1874 if (ParseOptionalAddrSpace(AddrSpace) ||
1875 ParseToken(lltok::star, "expected '*' in address space"))
1878 Result = PointerType::get(Result, AddrSpace);
1882 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1884 if (ParseFunctionType(Result))
1891 /// ParseParameterList
1893 /// ::= '(' Arg (',' Arg)* ')'
1895 /// ::= Type OptionalAttributes Value OptionalAttributes
1896 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1897 PerFunctionState &PFS, bool IsMustTailCall,
1898 bool InVarArgsFunc) {
1899 if (ParseToken(lltok::lparen, "expected '(' in call"))
1902 unsigned AttrIndex = 1;
1903 while (Lex.getKind() != lltok::rparen) {
1904 // If this isn't the first argument, we need a comma.
1905 if (!ArgList.empty() &&
1906 ParseToken(lltok::comma, "expected ',' in argument list"))
1909 // Parse an ellipsis if this is a musttail call in a variadic function.
1910 if (Lex.getKind() == lltok::dotdotdot) {
1911 const char *Msg = "unexpected ellipsis in argument list for ";
1912 if (!IsMustTailCall)
1913 return TokError(Twine(Msg) + "non-musttail call");
1915 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1916 Lex.Lex(); // Lex the '...', it is purely for readability.
1917 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1920 // Parse the argument.
1922 Type *ArgTy = nullptr;
1923 AttrBuilder ArgAttrs;
1925 if (ParseType(ArgTy, ArgLoc))
1928 if (ArgTy->isMetadataTy()) {
1929 if (ParseMetadataAsValue(V, PFS))
1932 // Otherwise, handle normal operands.
1933 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1936 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1941 if (IsMustTailCall && InVarArgsFunc)
1942 return TokError("expected '...' at end of argument list for musttail call "
1943 "in varargs function");
1945 Lex.Lex(); // Lex the ')'.
1949 /// ParseOptionalOperandBundles
1951 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
1954 /// ::= bundle-tag '(' ')'
1955 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
1957 /// bundle-tag ::= String Constant
1958 bool LLParser::ParseOptionalOperandBundles(
1959 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
1960 LocTy BeginLoc = Lex.getLoc();
1961 if (!EatIfPresent(lltok::lsquare))
1964 while (Lex.getKind() != lltok::rsquare) {
1965 // If this isn't the first operand bundle, we need a comma.
1966 if (!BundleList.empty() &&
1967 ParseToken(lltok::comma, "expected ',' in input list"))
1971 if (ParseStringConstant(Tag))
1974 BundleList.emplace_back();
1975 auto &OBI = BundleList.back();
1977 OBI.Tag = std::move(Tag);
1979 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1982 while (Lex.getKind() != lltok::rparen) {
1983 // If this isn't the first input, we need a comma.
1984 if (!OBI.Inputs.empty() &&
1985 ParseToken(lltok::comma, "expected ',' in input list"))
1989 Value *Input = nullptr;
1990 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
1992 OBI.Inputs.push_back(Input);
1995 Lex.Lex(); // Lex the ')'.
1998 if (BundleList.empty())
1999 return Error(BeginLoc, "operand bundle set must not be empty");
2001 Lex.Lex(); // Lex the ']'.
2005 /// ParseArgumentList - Parse the argument list for a function type or function
2007 /// ::= '(' ArgTypeListI ')'
2011 /// ::= ArgTypeList ',' '...'
2012 /// ::= ArgType (',' ArgType)*
2014 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2017 assert(Lex.getKind() == lltok::lparen);
2018 Lex.Lex(); // eat the (.
2020 if (Lex.getKind() == lltok::rparen) {
2022 } else if (Lex.getKind() == lltok::dotdotdot) {
2026 LocTy TypeLoc = Lex.getLoc();
2027 Type *ArgTy = nullptr;
2031 if (ParseType(ArgTy) ||
2032 ParseOptionalParamAttrs(Attrs)) return true;
2034 if (ArgTy->isVoidTy())
2035 return Error(TypeLoc, "argument can not have void type");
2037 if (Lex.getKind() == lltok::LocalVar) {
2038 Name = Lex.getStrVal();
2042 if (!FunctionType::isValidArgumentType(ArgTy))
2043 return Error(TypeLoc, "invalid type for function argument");
2045 unsigned AttrIndex = 1;
2046 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2047 AttrIndex++, Attrs),
2050 while (EatIfPresent(lltok::comma)) {
2051 // Handle ... at end of arg list.
2052 if (EatIfPresent(lltok::dotdotdot)) {
2057 // Otherwise must be an argument type.
2058 TypeLoc = Lex.getLoc();
2059 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2061 if (ArgTy->isVoidTy())
2062 return Error(TypeLoc, "argument can not have void type");
2064 if (Lex.getKind() == lltok::LocalVar) {
2065 Name = Lex.getStrVal();
2071 if (!ArgTy->isFirstClassType())
2072 return Error(TypeLoc, "invalid type for function argument");
2074 ArgList.emplace_back(
2076 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2081 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2084 /// ParseFunctionType
2085 /// ::= Type ArgumentList OptionalAttrs
2086 bool LLParser::ParseFunctionType(Type *&Result) {
2087 assert(Lex.getKind() == lltok::lparen);
2089 if (!FunctionType::isValidReturnType(Result))
2090 return TokError("invalid function return type");
2092 SmallVector<ArgInfo, 8> ArgList;
2094 if (ParseArgumentList(ArgList, isVarArg))
2097 // Reject names on the arguments lists.
2098 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2099 if (!ArgList[i].Name.empty())
2100 return Error(ArgList[i].Loc, "argument name invalid in function type");
2101 if (ArgList[i].Attrs.hasAttributes(i + 1))
2102 return Error(ArgList[i].Loc,
2103 "argument attributes invalid in function type");
2106 SmallVector<Type*, 16> ArgListTy;
2107 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2108 ArgListTy.push_back(ArgList[i].Ty);
2110 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2114 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2116 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2117 SmallVector<Type*, 8> Elts;
2118 if (ParseStructBody(Elts)) return true;
2120 Result = StructType::get(Context, Elts, Packed);
2124 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2125 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2126 std::pair<Type*, LocTy> &Entry,
2128 // If the type was already defined, diagnose the redefinition.
2129 if (Entry.first && !Entry.second.isValid())
2130 return Error(TypeLoc, "redefinition of type");
2132 // If we have opaque, just return without filling in the definition for the
2133 // struct. This counts as a definition as far as the .ll file goes.
2134 if (EatIfPresent(lltok::kw_opaque)) {
2135 // This type is being defined, so clear the location to indicate this.
2136 Entry.second = SMLoc();
2138 // If this type number has never been uttered, create it.
2140 Entry.first = StructType::create(Context, Name);
2141 ResultTy = Entry.first;
2145 // If the type starts with '<', then it is either a packed struct or a vector.
2146 bool isPacked = EatIfPresent(lltok::less);
2148 // If we don't have a struct, then we have a random type alias, which we
2149 // accept for compatibility with old files. These types are not allowed to be
2150 // forward referenced and not allowed to be recursive.
2151 if (Lex.getKind() != lltok::lbrace) {
2153 return Error(TypeLoc, "forward references to non-struct type");
2157 return ParseArrayVectorType(ResultTy, true);
2158 return ParseType(ResultTy);
2161 // This type is being defined, so clear the location to indicate this.
2162 Entry.second = SMLoc();
2164 // If this type number has never been uttered, create it.
2166 Entry.first = StructType::create(Context, Name);
2168 StructType *STy = cast<StructType>(Entry.first);
2170 SmallVector<Type*, 8> Body;
2171 if (ParseStructBody(Body) ||
2172 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2175 STy->setBody(Body, isPacked);
2181 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2184 /// ::= '{' Type (',' Type)* '}'
2185 /// ::= '<' '{' '}' '>'
2186 /// ::= '<' '{' Type (',' Type)* '}' '>'
2187 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2188 assert(Lex.getKind() == lltok::lbrace);
2189 Lex.Lex(); // Consume the '{'
2191 // Handle the empty struct.
2192 if (EatIfPresent(lltok::rbrace))
2195 LocTy EltTyLoc = Lex.getLoc();
2197 if (ParseType(Ty)) return true;
2200 if (!StructType::isValidElementType(Ty))
2201 return Error(EltTyLoc, "invalid element type for struct");
2203 while (EatIfPresent(lltok::comma)) {
2204 EltTyLoc = Lex.getLoc();
2205 if (ParseType(Ty)) return true;
2207 if (!StructType::isValidElementType(Ty))
2208 return Error(EltTyLoc, "invalid element type for struct");
2213 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2216 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2217 /// token has already been consumed.
2219 /// ::= '[' APSINTVAL 'x' Types ']'
2220 /// ::= '<' APSINTVAL 'x' Types '>'
2221 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2222 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2223 Lex.getAPSIntVal().getBitWidth() > 64)
2224 return TokError("expected number in address space");
2226 LocTy SizeLoc = Lex.getLoc();
2227 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2230 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2233 LocTy TypeLoc = Lex.getLoc();
2234 Type *EltTy = nullptr;
2235 if (ParseType(EltTy)) return true;
2237 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2238 "expected end of sequential type"))
2243 return Error(SizeLoc, "zero element vector is illegal");
2244 if ((unsigned)Size != Size)
2245 return Error(SizeLoc, "size too large for vector");
2246 if (!VectorType::isValidElementType(EltTy))
2247 return Error(TypeLoc, "invalid vector element type");
2248 Result = VectorType::get(EltTy, unsigned(Size));
2250 if (!ArrayType::isValidElementType(EltTy))
2251 return Error(TypeLoc, "invalid array element type");
2252 Result = ArrayType::get(EltTy, Size);
2257 //===----------------------------------------------------------------------===//
2258 // Function Semantic Analysis.
2259 //===----------------------------------------------------------------------===//
2261 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2263 : P(p), F(f), FunctionNumber(functionNumber) {
2265 // Insert unnamed arguments into the NumberedVals list.
2266 for (Argument &A : F.args())
2268 NumberedVals.push_back(&A);
2271 LLParser::PerFunctionState::~PerFunctionState() {
2272 // If there were any forward referenced non-basicblock values, delete them.
2274 for (const auto &P : ForwardRefVals) {
2275 if (isa<BasicBlock>(P.second.first))
2277 P.second.first->replaceAllUsesWith(
2278 UndefValue::get(P.second.first->getType()));
2279 delete P.second.first;
2282 for (const auto &P : ForwardRefValIDs) {
2283 if (isa<BasicBlock>(P.second.first))
2285 P.second.first->replaceAllUsesWith(
2286 UndefValue::get(P.second.first->getType()));
2287 delete P.second.first;
2291 bool LLParser::PerFunctionState::FinishFunction() {
2292 if (!ForwardRefVals.empty())
2293 return P.Error(ForwardRefVals.begin()->second.second,
2294 "use of undefined value '%" + ForwardRefVals.begin()->first +
2296 if (!ForwardRefValIDs.empty())
2297 return P.Error(ForwardRefValIDs.begin()->second.second,
2298 "use of undefined value '%" +
2299 Twine(ForwardRefValIDs.begin()->first) + "'");
2304 /// GetVal - Get a value with the specified name or ID, creating a
2305 /// forward reference record if needed. This can return null if the value
2306 /// exists but does not have the right type.
2307 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2308 LocTy Loc, OperatorConstraint OC) {
2309 // Look this name up in the normal function symbol table.
2310 Value *Val = F.getValueSymbolTable().lookup(Name);
2312 // If this is a forward reference for the value, see if we already created a
2313 // forward ref record.
2315 auto I = ForwardRefVals.find(Name);
2316 if (I != ForwardRefVals.end())
2317 Val = I->second.first;
2320 // If we have the value in the symbol table or fwd-ref table, return it.
2322 // Check operator constraints.
2328 if (!isa<CatchPadInst>(Val)) {
2329 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2334 if (!isa<CleanupPadInst>(Val)) {
2335 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2340 if (Val->getType() == Ty) return Val;
2341 if (Ty->isLabelTy())
2342 P.Error(Loc, "'%" + Name + "' is not a basic block");
2344 P.Error(Loc, "'%" + Name + "' defined with type '" +
2345 getTypeString(Val->getType()) + "'");
2349 // Don't make placeholders with invalid type.
2350 if (!Ty->isFirstClassType()) {
2351 P.Error(Loc, "invalid use of a non-first-class type");
2355 // Otherwise, create a new forward reference for this value and remember it.
2357 if (Ty->isLabelTy()) {
2359 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2361 FwdVal = new Argument(Ty, Name);
2365 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2369 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2372 llvm_unreachable("unexpected constraint");
2376 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2380 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2381 OperatorConstraint OC) {
2382 // Look this name up in the normal function symbol table.
2383 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2385 // If this is a forward reference for the value, see if we already created a
2386 // forward ref record.
2388 auto I = ForwardRefValIDs.find(ID);
2389 if (I != ForwardRefValIDs.end())
2390 Val = I->second.first;
2393 // If we have the value in the symbol table or fwd-ref table, return it.
2395 // Check operator constraint.
2401 if (!isa<CatchPadInst>(Val)) {
2402 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2407 if (!isa<CleanupPadInst>(Val)) {
2408 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2413 if (Val->getType() == Ty) return Val;
2414 if (Ty->isLabelTy())
2415 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2417 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2418 getTypeString(Val->getType()) + "'");
2422 if (!Ty->isFirstClassType()) {
2423 P.Error(Loc, "invalid use of a non-first-class type");
2427 // Otherwise, create a new forward reference for this value and remember it.
2429 if (Ty->isLabelTy()) {
2431 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2433 FwdVal = new Argument(Ty);
2437 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2440 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2443 llvm_unreachable("unexpected constraint");
2447 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2451 /// SetInstName - After an instruction is parsed and inserted into its
2452 /// basic block, this installs its name.
2453 bool LLParser::PerFunctionState::SetInstName(int NameID,
2454 const std::string &NameStr,
2455 LocTy NameLoc, Instruction *Inst) {
2456 // If this instruction has void type, it cannot have a name or ID specified.
2457 if (Inst->getType()->isVoidTy()) {
2458 if (NameID != -1 || !NameStr.empty())
2459 return P.Error(NameLoc, "instructions returning void cannot have a name");
2463 // If this was a numbered instruction, verify that the instruction is the
2464 // expected value and resolve any forward references.
2465 if (NameStr.empty()) {
2466 // If neither a name nor an ID was specified, just use the next ID.
2468 NameID = NumberedVals.size();
2470 if (unsigned(NameID) != NumberedVals.size())
2471 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2472 Twine(NumberedVals.size()) + "'");
2474 auto FI = ForwardRefValIDs.find(NameID);
2475 if (FI != ForwardRefValIDs.end()) {
2476 Value *Sentinel = FI->second.first;
2477 if (Sentinel->getType() != Inst->getType())
2478 return P.Error(NameLoc, "instruction forward referenced with type '" +
2479 getTypeString(FI->second.first->getType()) + "'");
2480 // Check operator constraints. We only put cleanuppads or catchpads in
2481 // the forward value map if the value is constrained to match.
2482 if (isa<CatchPadInst>(Sentinel)) {
2483 if (!isa<CatchPadInst>(Inst))
2484 return P.Error(FI->second.second,
2485 "'%" + Twine(NameID) + "' is not a catchpad");
2486 } else if (isa<CleanupPadInst>(Sentinel)) {
2487 if (!isa<CleanupPadInst>(Inst))
2488 return P.Error(FI->second.second,
2489 "'%" + Twine(NameID) + "' is not a cleanuppad");
2492 Sentinel->replaceAllUsesWith(Inst);
2494 ForwardRefValIDs.erase(FI);
2497 NumberedVals.push_back(Inst);
2501 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2502 auto FI = ForwardRefVals.find(NameStr);
2503 if (FI != ForwardRefVals.end()) {
2504 Value *Sentinel = FI->second.first;
2505 if (Sentinel->getType() != Inst->getType())
2506 return P.Error(NameLoc, "instruction forward referenced with type '" +
2507 getTypeString(FI->second.first->getType()) + "'");
2508 // Check operator constraints. We only put cleanuppads or catchpads in
2509 // the forward value map if the value is constrained to match.
2510 if (isa<CatchPadInst>(Sentinel)) {
2511 if (!isa<CatchPadInst>(Inst))
2512 return P.Error(FI->second.second,
2513 "'%" + NameStr + "' is not a catchpad");
2514 } else if (isa<CleanupPadInst>(Sentinel)) {
2515 if (!isa<CleanupPadInst>(Inst))
2516 return P.Error(FI->second.second,
2517 "'%" + NameStr + "' is not a cleanuppad");
2520 Sentinel->replaceAllUsesWith(Inst);
2522 ForwardRefVals.erase(FI);
2525 // Set the name on the instruction.
2526 Inst->setName(NameStr);
2528 if (Inst->getName() != NameStr)
2529 return P.Error(NameLoc, "multiple definition of local value named '" +
2534 /// GetBB - Get a basic block with the specified name or ID, creating a
2535 /// forward reference record if needed.
2536 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2538 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2539 Type::getLabelTy(F.getContext()), Loc));
2542 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2543 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2544 Type::getLabelTy(F.getContext()), Loc));
2547 /// DefineBB - Define the specified basic block, which is either named or
2548 /// unnamed. If there is an error, this returns null otherwise it returns
2549 /// the block being defined.
2550 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2554 BB = GetBB(NumberedVals.size(), Loc);
2556 BB = GetBB(Name, Loc);
2557 if (!BB) return nullptr; // Already diagnosed error.
2559 // Move the block to the end of the function. Forward ref'd blocks are
2560 // inserted wherever they happen to be referenced.
2561 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2563 // Remove the block from forward ref sets.
2565 ForwardRefValIDs.erase(NumberedVals.size());
2566 NumberedVals.push_back(BB);
2568 // BB forward references are already in the function symbol table.
2569 ForwardRefVals.erase(Name);
2575 //===----------------------------------------------------------------------===//
2577 //===----------------------------------------------------------------------===//
2579 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2580 /// type implied. For example, if we parse "4" we don't know what integer type
2581 /// it has. The value will later be combined with its type and checked for
2582 /// sanity. PFS is used to convert function-local operands of metadata (since
2583 /// metadata operands are not just parsed here but also converted to values).
2584 /// PFS can be null when we are not parsing metadata values inside a function.
2585 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2586 ID.Loc = Lex.getLoc();
2587 switch (Lex.getKind()) {
2588 default: return TokError("expected value token");
2589 case lltok::GlobalID: // @42
2590 ID.UIntVal = Lex.getUIntVal();
2591 ID.Kind = ValID::t_GlobalID;
2593 case lltok::GlobalVar: // @foo
2594 ID.StrVal = Lex.getStrVal();
2595 ID.Kind = ValID::t_GlobalName;
2597 case lltok::LocalVarID: // %42
2598 ID.UIntVal = Lex.getUIntVal();
2599 ID.Kind = ValID::t_LocalID;
2601 case lltok::LocalVar: // %foo
2602 ID.StrVal = Lex.getStrVal();
2603 ID.Kind = ValID::t_LocalName;
2606 ID.APSIntVal = Lex.getAPSIntVal();
2607 ID.Kind = ValID::t_APSInt;
2609 case lltok::APFloat:
2610 ID.APFloatVal = Lex.getAPFloatVal();
2611 ID.Kind = ValID::t_APFloat;
2613 case lltok::kw_true:
2614 ID.ConstantVal = ConstantInt::getTrue(Context);
2615 ID.Kind = ValID::t_Constant;
2617 case lltok::kw_false:
2618 ID.ConstantVal = ConstantInt::getFalse(Context);
2619 ID.Kind = ValID::t_Constant;
2621 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2622 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2623 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2625 case lltok::lbrace: {
2626 // ValID ::= '{' ConstVector '}'
2628 SmallVector<Constant*, 16> Elts;
2629 if (ParseGlobalValueVector(Elts) ||
2630 ParseToken(lltok::rbrace, "expected end of struct constant"))
2633 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2634 ID.UIntVal = Elts.size();
2635 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2636 Elts.size() * sizeof(Elts[0]));
2637 ID.Kind = ValID::t_ConstantStruct;
2641 // ValID ::= '<' ConstVector '>' --> Vector.
2642 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2644 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2646 SmallVector<Constant*, 16> Elts;
2647 LocTy FirstEltLoc = Lex.getLoc();
2648 if (ParseGlobalValueVector(Elts) ||
2650 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2651 ParseToken(lltok::greater, "expected end of constant"))
2654 if (isPackedStruct) {
2655 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2656 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2657 Elts.size() * sizeof(Elts[0]));
2658 ID.UIntVal = Elts.size();
2659 ID.Kind = ValID::t_PackedConstantStruct;
2664 return Error(ID.Loc, "constant vector must not be empty");
2666 if (!Elts[0]->getType()->isIntegerTy() &&
2667 !Elts[0]->getType()->isFloatingPointTy() &&
2668 !Elts[0]->getType()->isPointerTy())
2669 return Error(FirstEltLoc,
2670 "vector elements must have integer, pointer or floating point type");
2672 // Verify that all the vector elements have the same type.
2673 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2674 if (Elts[i]->getType() != Elts[0]->getType())
2675 return Error(FirstEltLoc,
2676 "vector element #" + Twine(i) +
2677 " is not of type '" + getTypeString(Elts[0]->getType()));
2679 ID.ConstantVal = ConstantVector::get(Elts);
2680 ID.Kind = ValID::t_Constant;
2683 case lltok::lsquare: { // Array Constant
2685 SmallVector<Constant*, 16> Elts;
2686 LocTy FirstEltLoc = Lex.getLoc();
2687 if (ParseGlobalValueVector(Elts) ||
2688 ParseToken(lltok::rsquare, "expected end of array constant"))
2691 // Handle empty element.
2693 // Use undef instead of an array because it's inconvenient to determine
2694 // the element type at this point, there being no elements to examine.
2695 ID.Kind = ValID::t_EmptyArray;
2699 if (!Elts[0]->getType()->isFirstClassType())
2700 return Error(FirstEltLoc, "invalid array element type: " +
2701 getTypeString(Elts[0]->getType()));
2703 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2705 // Verify all elements are correct type!
2706 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2707 if (Elts[i]->getType() != Elts[0]->getType())
2708 return Error(FirstEltLoc,
2709 "array element #" + Twine(i) +
2710 " is not of type '" + getTypeString(Elts[0]->getType()));
2713 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2714 ID.Kind = ValID::t_Constant;
2717 case lltok::kw_c: // c "foo"
2719 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2721 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2722 ID.Kind = ValID::t_Constant;
2725 case lltok::kw_asm: {
2726 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2728 bool HasSideEffect, AlignStack, AsmDialect;
2730 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2731 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2732 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2733 ParseStringConstant(ID.StrVal) ||
2734 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2735 ParseToken(lltok::StringConstant, "expected constraint string"))
2737 ID.StrVal2 = Lex.getStrVal();
2738 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2739 (unsigned(AsmDialect)<<2);
2740 ID.Kind = ValID::t_InlineAsm;
2744 case lltok::kw_blockaddress: {
2745 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2750 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2752 ParseToken(lltok::comma, "expected comma in block address expression")||
2753 ParseValID(Label) ||
2754 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2757 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2758 return Error(Fn.Loc, "expected function name in blockaddress");
2759 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2760 return Error(Label.Loc, "expected basic block name in blockaddress");
2762 // Try to find the function (but skip it if it's forward-referenced).
2763 GlobalValue *GV = nullptr;
2764 if (Fn.Kind == ValID::t_GlobalID) {
2765 if (Fn.UIntVal < NumberedVals.size())
2766 GV = NumberedVals[Fn.UIntVal];
2767 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2768 GV = M->getNamedValue(Fn.StrVal);
2770 Function *F = nullptr;
2772 // Confirm that it's actually a function with a definition.
2773 if (!isa<Function>(GV))
2774 return Error(Fn.Loc, "expected function name in blockaddress");
2775 F = cast<Function>(GV);
2776 if (F->isDeclaration())
2777 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2781 // Make a global variable as a placeholder for this reference.
2782 GlobalValue *&FwdRef =
2783 ForwardRefBlockAddresses.insert(std::make_pair(
2785 std::map<ValID, GlobalValue *>()))
2786 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2789 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2790 GlobalValue::InternalLinkage, nullptr, "");
2791 ID.ConstantVal = FwdRef;
2792 ID.Kind = ValID::t_Constant;
2796 // We found the function; now find the basic block. Don't use PFS, since we
2797 // might be inside a constant expression.
2799 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2800 if (Label.Kind == ValID::t_LocalID)
2801 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2803 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2805 return Error(Label.Loc, "referenced value is not a basic block");
2807 if (Label.Kind == ValID::t_LocalID)
2808 return Error(Label.Loc, "cannot take address of numeric label after "
2809 "the function is defined");
2810 BB = dyn_cast_or_null<BasicBlock>(
2811 F->getValueSymbolTable().lookup(Label.StrVal));
2813 return Error(Label.Loc, "referenced value is not a basic block");
2816 ID.ConstantVal = BlockAddress::get(F, BB);
2817 ID.Kind = ValID::t_Constant;
2821 case lltok::kw_trunc:
2822 case lltok::kw_zext:
2823 case lltok::kw_sext:
2824 case lltok::kw_fptrunc:
2825 case lltok::kw_fpext:
2826 case lltok::kw_bitcast:
2827 case lltok::kw_addrspacecast:
2828 case lltok::kw_uitofp:
2829 case lltok::kw_sitofp:
2830 case lltok::kw_fptoui:
2831 case lltok::kw_fptosi:
2832 case lltok::kw_inttoptr:
2833 case lltok::kw_ptrtoint: {
2834 unsigned Opc = Lex.getUIntVal();
2835 Type *DestTy = nullptr;
2838 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2839 ParseGlobalTypeAndValue(SrcVal) ||
2840 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2841 ParseType(DestTy) ||
2842 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2844 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2845 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2846 getTypeString(SrcVal->getType()) + "' to '" +
2847 getTypeString(DestTy) + "'");
2848 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2850 ID.Kind = ValID::t_Constant;
2853 case lltok::kw_extractvalue: {
2856 SmallVector<unsigned, 4> Indices;
2857 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2858 ParseGlobalTypeAndValue(Val) ||
2859 ParseIndexList(Indices) ||
2860 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2863 if (!Val->getType()->isAggregateType())
2864 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2865 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2866 return Error(ID.Loc, "invalid indices for extractvalue");
2867 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2868 ID.Kind = ValID::t_Constant;
2871 case lltok::kw_insertvalue: {
2873 Constant *Val0, *Val1;
2874 SmallVector<unsigned, 4> Indices;
2875 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2876 ParseGlobalTypeAndValue(Val0) ||
2877 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2878 ParseGlobalTypeAndValue(Val1) ||
2879 ParseIndexList(Indices) ||
2880 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2882 if (!Val0->getType()->isAggregateType())
2883 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2885 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2887 return Error(ID.Loc, "invalid indices for insertvalue");
2888 if (IndexedType != Val1->getType())
2889 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2890 getTypeString(Val1->getType()) +
2891 "' instead of '" + getTypeString(IndexedType) +
2893 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2894 ID.Kind = ValID::t_Constant;
2897 case lltok::kw_icmp:
2898 case lltok::kw_fcmp: {
2899 unsigned PredVal, Opc = Lex.getUIntVal();
2900 Constant *Val0, *Val1;
2902 if (ParseCmpPredicate(PredVal, Opc) ||
2903 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2904 ParseGlobalTypeAndValue(Val0) ||
2905 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2906 ParseGlobalTypeAndValue(Val1) ||
2907 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2910 if (Val0->getType() != Val1->getType())
2911 return Error(ID.Loc, "compare operands must have the same type");
2913 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2915 if (Opc == Instruction::FCmp) {
2916 if (!Val0->getType()->isFPOrFPVectorTy())
2917 return Error(ID.Loc, "fcmp requires floating point operands");
2918 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2920 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2921 if (!Val0->getType()->isIntOrIntVectorTy() &&
2922 !Val0->getType()->getScalarType()->isPointerTy())
2923 return Error(ID.Loc, "icmp requires pointer or integer operands");
2924 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2926 ID.Kind = ValID::t_Constant;
2930 // Binary Operators.
2932 case lltok::kw_fadd:
2934 case lltok::kw_fsub:
2936 case lltok::kw_fmul:
2937 case lltok::kw_udiv:
2938 case lltok::kw_sdiv:
2939 case lltok::kw_fdiv:
2940 case lltok::kw_urem:
2941 case lltok::kw_srem:
2942 case lltok::kw_frem:
2944 case lltok::kw_lshr:
2945 case lltok::kw_ashr: {
2949 unsigned Opc = Lex.getUIntVal();
2950 Constant *Val0, *Val1;
2952 LocTy ModifierLoc = Lex.getLoc();
2953 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2954 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2955 if (EatIfPresent(lltok::kw_nuw))
2957 if (EatIfPresent(lltok::kw_nsw)) {
2959 if (EatIfPresent(lltok::kw_nuw))
2962 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2963 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2964 if (EatIfPresent(lltok::kw_exact))
2967 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2968 ParseGlobalTypeAndValue(Val0) ||
2969 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2970 ParseGlobalTypeAndValue(Val1) ||
2971 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2973 if (Val0->getType() != Val1->getType())
2974 return Error(ID.Loc, "operands of constexpr must have same type");
2975 if (!Val0->getType()->isIntOrIntVectorTy()) {
2977 return Error(ModifierLoc, "nuw only applies to integer operations");
2979 return Error(ModifierLoc, "nsw only applies to integer operations");
2981 // Check that the type is valid for the operator.
2983 case Instruction::Add:
2984 case Instruction::Sub:
2985 case Instruction::Mul:
2986 case Instruction::UDiv:
2987 case Instruction::SDiv:
2988 case Instruction::URem:
2989 case Instruction::SRem:
2990 case Instruction::Shl:
2991 case Instruction::AShr:
2992 case Instruction::LShr:
2993 if (!Val0->getType()->isIntOrIntVectorTy())
2994 return Error(ID.Loc, "constexpr requires integer operands");
2996 case Instruction::FAdd:
2997 case Instruction::FSub:
2998 case Instruction::FMul:
2999 case Instruction::FDiv:
3000 case Instruction::FRem:
3001 if (!Val0->getType()->isFPOrFPVectorTy())
3002 return Error(ID.Loc, "constexpr requires fp operands");
3004 default: llvm_unreachable("Unknown binary operator!");
3007 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3008 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3009 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3010 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3012 ID.Kind = ValID::t_Constant;
3016 // Logical Operations
3019 case lltok::kw_xor: {
3020 unsigned Opc = Lex.getUIntVal();
3021 Constant *Val0, *Val1;
3023 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3024 ParseGlobalTypeAndValue(Val0) ||
3025 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3026 ParseGlobalTypeAndValue(Val1) ||
3027 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3029 if (Val0->getType() != Val1->getType())
3030 return Error(ID.Loc, "operands of constexpr must have same type");
3031 if (!Val0->getType()->isIntOrIntVectorTy())
3032 return Error(ID.Loc,
3033 "constexpr requires integer or integer vector operands");
3034 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3035 ID.Kind = ValID::t_Constant;
3039 case lltok::kw_getelementptr:
3040 case lltok::kw_shufflevector:
3041 case lltok::kw_insertelement:
3042 case lltok::kw_extractelement:
3043 case lltok::kw_select: {
3044 unsigned Opc = Lex.getUIntVal();
3045 SmallVector<Constant*, 16> Elts;
3046 bool InBounds = false;
3050 if (Opc == Instruction::GetElementPtr)
3051 InBounds = EatIfPresent(lltok::kw_inbounds);
3053 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3056 LocTy ExplicitTypeLoc = Lex.getLoc();
3057 if (Opc == Instruction::GetElementPtr) {
3058 if (ParseType(Ty) ||
3059 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3063 if (ParseGlobalValueVector(Elts) ||
3064 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3067 if (Opc == Instruction::GetElementPtr) {
3068 if (Elts.size() == 0 ||
3069 !Elts[0]->getType()->getScalarType()->isPointerTy())
3070 return Error(ID.Loc, "base of getelementptr must be a pointer");
3072 Type *BaseType = Elts[0]->getType();
3073 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3074 if (Ty != BasePointerType->getElementType())
3077 "explicit pointee type doesn't match operand's pointee type");
3079 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3080 for (Constant *Val : Indices) {
3081 Type *ValTy = Val->getType();
3082 if (!ValTy->getScalarType()->isIntegerTy())
3083 return Error(ID.Loc, "getelementptr index must be an integer");
3084 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3085 return Error(ID.Loc, "getelementptr index type missmatch");
3086 if (ValTy->isVectorTy()) {
3087 unsigned ValNumEl = ValTy->getVectorNumElements();
3088 unsigned PtrNumEl = BaseType->getVectorNumElements();
3089 if (ValNumEl != PtrNumEl)
3092 "getelementptr vector index has a wrong number of elements");
3096 SmallPtrSet<Type*, 4> Visited;
3097 if (!Indices.empty() && !Ty->isSized(&Visited))
3098 return Error(ID.Loc, "base element of getelementptr must be sized");
3100 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3101 return Error(ID.Loc, "invalid getelementptr indices");
3103 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3104 } else if (Opc == Instruction::Select) {
3105 if (Elts.size() != 3)
3106 return Error(ID.Loc, "expected three operands to select");
3107 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3109 return Error(ID.Loc, Reason);
3110 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3111 } else if (Opc == Instruction::ShuffleVector) {
3112 if (Elts.size() != 3)
3113 return Error(ID.Loc, "expected three operands to shufflevector");
3114 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3115 return Error(ID.Loc, "invalid operands to shufflevector");
3117 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3118 } else if (Opc == Instruction::ExtractElement) {
3119 if (Elts.size() != 2)
3120 return Error(ID.Loc, "expected two operands to extractelement");
3121 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3122 return Error(ID.Loc, "invalid extractelement operands");
3123 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3125 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3126 if (Elts.size() != 3)
3127 return Error(ID.Loc, "expected three operands to insertelement");
3128 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3129 return Error(ID.Loc, "invalid insertelement operands");
3131 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3134 ID.Kind = ValID::t_Constant;
3143 /// ParseGlobalValue - Parse a global value with the specified type.
3144 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3148 bool Parsed = ParseValID(ID) ||
3149 ConvertValIDToValue(Ty, ID, V, nullptr);
3150 if (V && !(C = dyn_cast<Constant>(V)))
3151 return Error(ID.Loc, "global values must be constants");
3155 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3157 return ParseType(Ty) ||
3158 ParseGlobalValue(Ty, V);
3161 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3164 LocTy KwLoc = Lex.getLoc();
3165 if (!EatIfPresent(lltok::kw_comdat))
3168 if (EatIfPresent(lltok::lparen)) {
3169 if (Lex.getKind() != lltok::ComdatVar)
3170 return TokError("expected comdat variable");
3171 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3173 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3176 if (GlobalName.empty())
3177 return TokError("comdat cannot be unnamed");
3178 C = getComdat(GlobalName, KwLoc);
3184 /// ParseGlobalValueVector
3186 /// ::= TypeAndValue (',' TypeAndValue)*
3187 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3189 if (Lex.getKind() == lltok::rbrace ||
3190 Lex.getKind() == lltok::rsquare ||
3191 Lex.getKind() == lltok::greater ||
3192 Lex.getKind() == lltok::rparen)
3196 if (ParseGlobalTypeAndValue(C)) return true;
3199 while (EatIfPresent(lltok::comma)) {
3200 if (ParseGlobalTypeAndValue(C)) return true;
3207 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3208 SmallVector<Metadata *, 16> Elts;
3209 if (ParseMDNodeVector(Elts))
3212 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3219 /// ::= !DILocation(...)
3220 bool LLParser::ParseMDNode(MDNode *&N) {
3221 if (Lex.getKind() == lltok::MetadataVar)
3222 return ParseSpecializedMDNode(N);
3224 return ParseToken(lltok::exclaim, "expected '!' here") ||
3228 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3230 if (Lex.getKind() == lltok::lbrace)
3231 return ParseMDTuple(N);
3234 return ParseMDNodeID(N);
3239 /// Structure to represent an optional metadata field.
3240 template <class FieldTy> struct MDFieldImpl {
3241 typedef MDFieldImpl ImplTy;
3245 void assign(FieldTy Val) {
3247 this->Val = std::move(Val);
3250 explicit MDFieldImpl(FieldTy Default)
3251 : Val(std::move(Default)), Seen(false) {}
3254 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3257 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3258 : ImplTy(Default), Max(Max) {}
3260 struct LineField : public MDUnsignedField {
3261 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3263 struct ColumnField : public MDUnsignedField {
3264 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3266 struct DwarfTagField : public MDUnsignedField {
3267 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3268 DwarfTagField(dwarf::Tag DefaultTag)
3269 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3271 struct DwarfAttEncodingField : public MDUnsignedField {
3272 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3274 struct DwarfVirtualityField : public MDUnsignedField {
3275 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3277 struct DwarfLangField : public MDUnsignedField {
3278 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3281 struct DIFlagField : public MDUnsignedField {
3282 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3285 struct MDSignedField : public MDFieldImpl<int64_t> {
3289 MDSignedField(int64_t Default = 0)
3290 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3291 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3292 : ImplTy(Default), Min(Min), Max(Max) {}
3295 struct MDBoolField : public MDFieldImpl<bool> {
3296 MDBoolField(bool Default = false) : ImplTy(Default) {}
3298 struct MDField : public MDFieldImpl<Metadata *> {
3301 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3303 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3304 MDConstant() : ImplTy(nullptr) {}
3306 struct MDStringField : public MDFieldImpl<MDString *> {
3308 MDStringField(bool AllowEmpty = true)
3309 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3311 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3312 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3320 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3321 MDUnsignedField &Result) {
3322 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3323 return TokError("expected unsigned integer");
3325 auto &U = Lex.getAPSIntVal();
3326 if (U.ugt(Result.Max))
3327 return TokError("value for '" + Name + "' too large, limit is " +
3329 Result.assign(U.getZExtValue());
3330 assert(Result.Val <= Result.Max && "Expected value in range");
3336 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3337 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3340 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3341 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3345 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3346 if (Lex.getKind() == lltok::APSInt)
3347 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3349 if (Lex.getKind() != lltok::DwarfTag)
3350 return TokError("expected DWARF tag");
3352 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3353 if (Tag == dwarf::DW_TAG_invalid)
3354 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3355 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3363 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3364 DwarfVirtualityField &Result) {
3365 if (Lex.getKind() == lltok::APSInt)
3366 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3368 if (Lex.getKind() != lltok::DwarfVirtuality)
3369 return TokError("expected DWARF virtuality code");
3371 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3373 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3374 Lex.getStrVal() + "'");
3375 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3376 Result.assign(Virtuality);
3382 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3383 if (Lex.getKind() == lltok::APSInt)
3384 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3386 if (Lex.getKind() != lltok::DwarfLang)
3387 return TokError("expected DWARF language");
3389 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3391 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3393 assert(Lang <= Result.Max && "Expected valid DWARF language");
3394 Result.assign(Lang);
3400 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3401 DwarfAttEncodingField &Result) {
3402 if (Lex.getKind() == lltok::APSInt)
3403 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3405 if (Lex.getKind() != lltok::DwarfAttEncoding)
3406 return TokError("expected DWARF type attribute encoding");
3408 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3410 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3411 Lex.getStrVal() + "'");
3412 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3413 Result.assign(Encoding);
3420 /// ::= DIFlagVector
3421 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3423 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3424 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3426 // Parser for a single flag.
3427 auto parseFlag = [&](unsigned &Val) {
3428 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3429 return ParseUInt32(Val);
3431 if (Lex.getKind() != lltok::DIFlag)
3432 return TokError("expected debug info flag");
3434 Val = DINode::getFlag(Lex.getStrVal());
3436 return TokError(Twine("invalid debug info flag flag '") +
3437 Lex.getStrVal() + "'");
3442 // Parse the flags and combine them together.
3443 unsigned Combined = 0;
3449 } while (EatIfPresent(lltok::bar));
3451 Result.assign(Combined);
3456 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3457 MDSignedField &Result) {
3458 if (Lex.getKind() != lltok::APSInt)
3459 return TokError("expected signed integer");
3461 auto &S = Lex.getAPSIntVal();
3463 return TokError("value for '" + Name + "' too small, limit is " +
3466 return TokError("value for '" + Name + "' too large, limit is " +
3468 Result.assign(S.getExtValue());
3469 assert(Result.Val >= Result.Min && "Expected value in range");
3470 assert(Result.Val <= Result.Max && "Expected value in range");
3476 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3477 switch (Lex.getKind()) {
3479 return TokError("expected 'true' or 'false'");
3480 case lltok::kw_true:
3481 Result.assign(true);
3483 case lltok::kw_false:
3484 Result.assign(false);
3492 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3493 if (Lex.getKind() == lltok::kw_null) {
3494 if (!Result.AllowNull)
3495 return TokError("'" + Name + "' cannot be null");
3497 Result.assign(nullptr);
3502 if (ParseMetadata(MD, nullptr))
3510 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3512 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3515 Result.assign(cast<ConstantAsMetadata>(MD));
3520 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3521 LocTy ValueLoc = Lex.getLoc();
3523 if (ParseStringConstant(S))
3526 if (!Result.AllowEmpty && S.empty())
3527 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3529 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3534 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3535 SmallVector<Metadata *, 4> MDs;
3536 if (ParseMDNodeVector(MDs))
3539 Result.assign(std::move(MDs));
3543 } // end namespace llvm
3545 template <class ParserTy>
3546 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3548 if (Lex.getKind() != lltok::LabelStr)
3549 return TokError("expected field label here");
3553 } while (EatIfPresent(lltok::comma));
3558 template <class ParserTy>
3559 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3560 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3563 if (ParseToken(lltok::lparen, "expected '(' here"))
3565 if (Lex.getKind() != lltok::rparen)
3566 if (ParseMDFieldsImplBody(parseField))
3569 ClosingLoc = Lex.getLoc();
3570 return ParseToken(lltok::rparen, "expected ')' here");
3573 template <class FieldTy>
3574 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3576 return TokError("field '" + Name + "' cannot be specified more than once");
3578 LocTy Loc = Lex.getLoc();
3580 return ParseMDField(Loc, Name, Result);
3583 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3584 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3586 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3587 if (Lex.getStrVal() == #CLASS) \
3588 return Parse##CLASS(N, IsDistinct);
3589 #include "llvm/IR/Metadata.def"
3591 return TokError("expected metadata type");
3594 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3595 #define NOP_FIELD(NAME, TYPE, INIT)
3596 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3598 return Error(ClosingLoc, "missing required field '" #NAME "'");
3599 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3600 if (Lex.getStrVal() == #NAME) \
3601 return ParseMDField(#NAME, NAME);
3602 #define PARSE_MD_FIELDS() \
3603 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3606 if (ParseMDFieldsImpl([&]() -> bool { \
3607 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3608 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3611 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3613 #define GET_OR_DISTINCT(CLASS, ARGS) \
3614 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3616 /// ParseDILocationFields:
3617 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3618 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3619 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3620 OPTIONAL(line, LineField, ); \
3621 OPTIONAL(column, ColumnField, ); \
3622 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3623 OPTIONAL(inlinedAt, MDField, );
3625 #undef VISIT_MD_FIELDS
3627 Result = GET_OR_DISTINCT(
3628 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3632 /// ParseGenericDINode:
3633 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3634 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3635 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3636 REQUIRED(tag, DwarfTagField, ); \
3637 OPTIONAL(header, MDStringField, ); \
3638 OPTIONAL(operands, MDFieldList, );
3640 #undef VISIT_MD_FIELDS
3642 Result = GET_OR_DISTINCT(GenericDINode,
3643 (Context, tag.Val, header.Val, operands.Val));
3647 /// ParseDISubrange:
3648 /// ::= !DISubrange(count: 30, lowerBound: 2)
3649 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3650 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3651 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3652 OPTIONAL(lowerBound, MDSignedField, );
3654 #undef VISIT_MD_FIELDS
3656 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3660 /// ParseDIEnumerator:
3661 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3662 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3663 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3664 REQUIRED(name, MDStringField, ); \
3665 REQUIRED(value, MDSignedField, );
3667 #undef VISIT_MD_FIELDS
3669 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3673 /// ParseDIBasicType:
3674 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3675 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3676 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3677 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3678 OPTIONAL(name, MDStringField, ); \
3679 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3680 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3681 OPTIONAL(encoding, DwarfAttEncodingField, );
3683 #undef VISIT_MD_FIELDS
3685 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3686 align.Val, encoding.Val));
3690 /// ParseDIDerivedType:
3691 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3692 /// line: 7, scope: !1, baseType: !2, size: 32,
3693 /// align: 32, offset: 0, flags: 0, extraData: !3)
3694 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3695 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3696 REQUIRED(tag, DwarfTagField, ); \
3697 OPTIONAL(name, MDStringField, ); \
3698 OPTIONAL(file, MDField, ); \
3699 OPTIONAL(line, LineField, ); \
3700 OPTIONAL(scope, MDField, ); \
3701 REQUIRED(baseType, MDField, ); \
3702 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3703 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3704 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3705 OPTIONAL(flags, DIFlagField, ); \
3706 OPTIONAL(extraData, MDField, );
3708 #undef VISIT_MD_FIELDS
3710 Result = GET_OR_DISTINCT(DIDerivedType,
3711 (Context, tag.Val, name.Val, file.Val, line.Val,
3712 scope.Val, baseType.Val, size.Val, align.Val,
3713 offset.Val, flags.Val, extraData.Val));
3717 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3718 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3719 REQUIRED(tag, DwarfTagField, ); \
3720 OPTIONAL(name, MDStringField, ); \
3721 OPTIONAL(file, MDField, ); \
3722 OPTIONAL(line, LineField, ); \
3723 OPTIONAL(scope, MDField, ); \
3724 OPTIONAL(baseType, MDField, ); \
3725 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3726 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3727 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3728 OPTIONAL(flags, DIFlagField, ); \
3729 OPTIONAL(elements, MDField, ); \
3730 OPTIONAL(runtimeLang, DwarfLangField, ); \
3731 OPTIONAL(vtableHolder, MDField, ); \
3732 OPTIONAL(templateParams, MDField, ); \
3733 OPTIONAL(identifier, MDStringField, );
3735 #undef VISIT_MD_FIELDS
3737 Result = GET_OR_DISTINCT(
3739 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3740 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3741 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3745 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3746 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3747 OPTIONAL(flags, DIFlagField, ); \
3748 REQUIRED(types, MDField, );
3750 #undef VISIT_MD_FIELDS
3752 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3756 /// ParseDIFileType:
3757 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3758 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3759 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3760 REQUIRED(filename, MDStringField, ); \
3761 REQUIRED(directory, MDStringField, );
3763 #undef VISIT_MD_FIELDS
3765 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3769 /// ParseDICompileUnit:
3770 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3771 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3772 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3773 /// enums: !1, retainedTypes: !2, subprograms: !3,
3774 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3775 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3777 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3779 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3780 REQUIRED(language, DwarfLangField, ); \
3781 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3782 OPTIONAL(producer, MDStringField, ); \
3783 OPTIONAL(isOptimized, MDBoolField, ); \
3784 OPTIONAL(flags, MDStringField, ); \
3785 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3786 OPTIONAL(splitDebugFilename, MDStringField, ); \
3787 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3788 OPTIONAL(enums, MDField, ); \
3789 OPTIONAL(retainedTypes, MDField, ); \
3790 OPTIONAL(subprograms, MDField, ); \
3791 OPTIONAL(globals, MDField, ); \
3792 OPTIONAL(imports, MDField, ); \
3793 OPTIONAL(dwoId, MDUnsignedField, );
3795 #undef VISIT_MD_FIELDS
3797 Result = DICompileUnit::getDistinct(
3798 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3799 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3800 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3804 /// ParseDISubprogram:
3805 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3806 /// file: !1, line: 7, type: !2, isLocal: false,
3807 /// isDefinition: true, scopeLine: 8, containingType: !3,
3808 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3809 /// virtualIndex: 10, flags: 11,
3810 /// isOptimized: false, templateParams: !4, declaration: !5,
3812 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3813 auto Loc = Lex.getLoc();
3814 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3815 OPTIONAL(scope, MDField, ); \
3816 OPTIONAL(name, MDStringField, ); \
3817 OPTIONAL(linkageName, MDStringField, ); \
3818 OPTIONAL(file, MDField, ); \
3819 OPTIONAL(line, LineField, ); \
3820 OPTIONAL(type, MDField, ); \
3821 OPTIONAL(isLocal, MDBoolField, ); \
3822 OPTIONAL(isDefinition, MDBoolField, (true)); \
3823 OPTIONAL(scopeLine, LineField, ); \
3824 OPTIONAL(containingType, MDField, ); \
3825 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3826 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3827 OPTIONAL(flags, DIFlagField, ); \
3828 OPTIONAL(isOptimized, MDBoolField, ); \
3829 OPTIONAL(templateParams, MDField, ); \
3830 OPTIONAL(declaration, MDField, ); \
3831 OPTIONAL(variables, MDField, );
3833 #undef VISIT_MD_FIELDS
3835 if (isDefinition.Val && !IsDistinct)
3838 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3840 Result = GET_OR_DISTINCT(
3842 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3843 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3844 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3845 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3849 /// ParseDILexicalBlock:
3850 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3851 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3852 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3853 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3854 OPTIONAL(file, MDField, ); \
3855 OPTIONAL(line, LineField, ); \
3856 OPTIONAL(column, ColumnField, );
3858 #undef VISIT_MD_FIELDS
3860 Result = GET_OR_DISTINCT(
3861 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3865 /// ParseDILexicalBlockFile:
3866 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3867 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3868 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3869 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3870 OPTIONAL(file, MDField, ); \
3871 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3873 #undef VISIT_MD_FIELDS
3875 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3876 (Context, scope.Val, file.Val, discriminator.Val));
3880 /// ParseDINamespace:
3881 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3882 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3883 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3884 REQUIRED(scope, MDField, ); \
3885 OPTIONAL(file, MDField, ); \
3886 OPTIONAL(name, MDStringField, ); \
3887 OPTIONAL(line, LineField, );
3889 #undef VISIT_MD_FIELDS
3891 Result = GET_OR_DISTINCT(DINamespace,
3892 (Context, scope.Val, file.Val, name.Val, line.Val));
3897 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3898 /// includePath: "/usr/include", isysroot: "/")
3899 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3900 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3901 REQUIRED(scope, MDField, ); \
3902 REQUIRED(name, MDStringField, ); \
3903 OPTIONAL(configMacros, MDStringField, ); \
3904 OPTIONAL(includePath, MDStringField, ); \
3905 OPTIONAL(isysroot, MDStringField, );
3907 #undef VISIT_MD_FIELDS
3909 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3910 configMacros.Val, includePath.Val, isysroot.Val));
3914 /// ParseDITemplateTypeParameter:
3915 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3916 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3917 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3918 OPTIONAL(name, MDStringField, ); \
3919 REQUIRED(type, MDField, );
3921 #undef VISIT_MD_FIELDS
3924 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3928 /// ParseDITemplateValueParameter:
3929 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3930 /// name: "V", type: !1, value: i32 7)
3931 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3932 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3933 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3934 OPTIONAL(name, MDStringField, ); \
3935 OPTIONAL(type, MDField, ); \
3936 REQUIRED(value, MDField, );
3938 #undef VISIT_MD_FIELDS
3940 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3941 (Context, tag.Val, name.Val, type.Val, value.Val));
3945 /// ParseDIGlobalVariable:
3946 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3947 /// file: !1, line: 7, type: !2, isLocal: false,
3948 /// isDefinition: true, variable: i32* @foo,
3949 /// declaration: !3)
3950 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3951 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3952 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3953 OPTIONAL(scope, MDField, ); \
3954 OPTIONAL(linkageName, MDStringField, ); \
3955 OPTIONAL(file, MDField, ); \
3956 OPTIONAL(line, LineField, ); \
3957 OPTIONAL(type, MDField, ); \
3958 OPTIONAL(isLocal, MDBoolField, ); \
3959 OPTIONAL(isDefinition, MDBoolField, (true)); \
3960 OPTIONAL(variable, MDConstant, ); \
3961 OPTIONAL(declaration, MDField, );
3963 #undef VISIT_MD_FIELDS
3965 Result = GET_OR_DISTINCT(DIGlobalVariable,
3966 (Context, scope.Val, name.Val, linkageName.Val,
3967 file.Val, line.Val, type.Val, isLocal.Val,
3968 isDefinition.Val, variable.Val, declaration.Val));
3972 /// ParseDILocalVariable:
3973 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3974 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3975 /// ::= !DILocalVariable(scope: !0, name: "foo",
3976 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3977 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3978 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3979 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3980 OPTIONAL(name, MDStringField, ); \
3981 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3982 OPTIONAL(file, MDField, ); \
3983 OPTIONAL(line, LineField, ); \
3984 OPTIONAL(type, MDField, ); \
3985 OPTIONAL(flags, DIFlagField, );
3987 #undef VISIT_MD_FIELDS
3989 Result = GET_OR_DISTINCT(DILocalVariable,
3990 (Context, scope.Val, name.Val, file.Val, line.Val,
3991 type.Val, arg.Val, flags.Val));
3995 /// ParseDIExpression:
3996 /// ::= !DIExpression(0, 7, -1)
3997 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3998 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4001 if (ParseToken(lltok::lparen, "expected '(' here"))
4004 SmallVector<uint64_t, 8> Elements;
4005 if (Lex.getKind() != lltok::rparen)
4007 if (Lex.getKind() == lltok::DwarfOp) {
4008 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4010 Elements.push_back(Op);
4013 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4016 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4017 return TokError("expected unsigned integer");
4019 auto &U = Lex.getAPSIntVal();
4020 if (U.ugt(UINT64_MAX))
4021 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4022 Elements.push_back(U.getZExtValue());
4024 } while (EatIfPresent(lltok::comma));
4026 if (ParseToken(lltok::rparen, "expected ')' here"))
4029 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4033 /// ParseDIObjCProperty:
4034 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4035 /// getter: "getFoo", attributes: 7, type: !2)
4036 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4037 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4038 OPTIONAL(name, MDStringField, ); \
4039 OPTIONAL(file, MDField, ); \
4040 OPTIONAL(line, LineField, ); \
4041 OPTIONAL(setter, MDStringField, ); \
4042 OPTIONAL(getter, MDStringField, ); \
4043 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4044 OPTIONAL(type, MDField, );
4046 #undef VISIT_MD_FIELDS
4048 Result = GET_OR_DISTINCT(DIObjCProperty,
4049 (Context, name.Val, file.Val, line.Val, setter.Val,
4050 getter.Val, attributes.Val, type.Val));
4054 /// ParseDIImportedEntity:
4055 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4056 /// line: 7, name: "foo")
4057 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4058 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4059 REQUIRED(tag, DwarfTagField, ); \
4060 REQUIRED(scope, MDField, ); \
4061 OPTIONAL(entity, MDField, ); \
4062 OPTIONAL(line, LineField, ); \
4063 OPTIONAL(name, MDStringField, );
4065 #undef VISIT_MD_FIELDS
4067 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4068 entity.Val, line.Val, name.Val));
4072 #undef PARSE_MD_FIELD
4074 #undef REQUIRE_FIELD
4075 #undef DECLARE_FIELD
4077 /// ParseMetadataAsValue
4078 /// ::= metadata i32 %local
4079 /// ::= metadata i32 @global
4080 /// ::= metadata i32 7
4082 /// ::= metadata !{...}
4083 /// ::= metadata !"string"
4084 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4085 // Note: the type 'metadata' has already been parsed.
4087 if (ParseMetadata(MD, &PFS))
4090 V = MetadataAsValue::get(Context, MD);
4094 /// ParseValueAsMetadata
4098 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4099 PerFunctionState *PFS) {
4102 if (ParseType(Ty, TypeMsg, Loc))
4104 if (Ty->isMetadataTy())
4105 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4108 if (ParseValue(Ty, V, PFS))
4111 MD = ValueAsMetadata::get(V);
4122 /// ::= !DILocation(...)
4123 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4124 if (Lex.getKind() == lltok::MetadataVar) {
4126 if (ParseSpecializedMDNode(N))
4134 if (Lex.getKind() != lltok::exclaim)
4135 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4138 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4142 // ::= '!' STRINGCONSTANT
4143 if (Lex.getKind() == lltok::StringConstant) {
4145 if (ParseMDString(S))
4155 if (ParseMDNodeTail(N))
4162 //===----------------------------------------------------------------------===//
4163 // Function Parsing.
4164 //===----------------------------------------------------------------------===//
4166 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4167 PerFunctionState *PFS,
4168 OperatorConstraint OC) {
4169 if (Ty->isFunctionTy())
4170 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4172 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4175 return Error(ID.Loc, "Catchpad value required in this position");
4177 return Error(ID.Loc, "Cleanuppad value required in this position");
4179 llvm_unreachable("Unexpected constraint kind");
4184 case ValID::t_LocalID:
4185 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4186 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4187 return V == nullptr;
4188 case ValID::t_LocalName:
4189 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4190 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4191 return V == nullptr;
4192 case ValID::t_InlineAsm: {
4193 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4194 return Error(ID.Loc, "invalid type for inline asm constraint string");
4195 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4196 (ID.UIntVal >> 1) & 1,
4197 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4200 case ValID::t_GlobalName:
4201 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4202 return V == nullptr;
4203 case ValID::t_GlobalID:
4204 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4205 return V == nullptr;
4206 case ValID::t_APSInt:
4207 if (!Ty->isIntegerTy())
4208 return Error(ID.Loc, "integer constant must have integer type");
4209 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4210 V = ConstantInt::get(Context, ID.APSIntVal);
4212 case ValID::t_APFloat:
4213 if (!Ty->isFloatingPointTy() ||
4214 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4215 return Error(ID.Loc, "floating point constant invalid for type");
4217 // The lexer has no type info, so builds all half, float, and double FP
4218 // constants as double. Fix this here. Long double does not need this.
4219 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4222 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4224 else if (Ty->isFloatTy())
4225 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4228 V = ConstantFP::get(Context, ID.APFloatVal);
4230 if (V->getType() != Ty)
4231 return Error(ID.Loc, "floating point constant does not have type '" +
4232 getTypeString(Ty) + "'");
4236 if (!Ty->isPointerTy())
4237 return Error(ID.Loc, "null must be a pointer type");
4238 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4240 case ValID::t_Undef:
4241 // FIXME: LabelTy should not be a first-class type.
4242 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4243 return Error(ID.Loc, "invalid type for undef constant");
4244 V = UndefValue::get(Ty);
4246 case ValID::t_EmptyArray:
4247 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4248 return Error(ID.Loc, "invalid empty array initializer");
4249 V = UndefValue::get(Ty);
4252 // FIXME: LabelTy should not be a first-class type.
4253 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4254 return Error(ID.Loc, "invalid type for null constant");
4255 V = Constant::getNullValue(Ty);
4257 case ValID::t_Constant:
4258 if (ID.ConstantVal->getType() != Ty)
4259 return Error(ID.Loc, "constant expression type mismatch");
4263 case ValID::t_ConstantStruct:
4264 case ValID::t_PackedConstantStruct:
4265 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4266 if (ST->getNumElements() != ID.UIntVal)
4267 return Error(ID.Loc,
4268 "initializer with struct type has wrong # elements");
4269 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4270 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4272 // Verify that the elements are compatible with the structtype.
4273 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4274 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4275 return Error(ID.Loc, "element " + Twine(i) +
4276 " of struct initializer doesn't match struct element type");
4278 V = ConstantStruct::get(
4279 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4281 return Error(ID.Loc, "constant expression type mismatch");
4284 llvm_unreachable("Invalid ValID");
4287 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4290 auto Loc = Lex.getLoc();
4291 if (ParseValID(ID, /*PFS=*/nullptr))
4294 case ValID::t_APSInt:
4295 case ValID::t_APFloat:
4296 case ValID::t_Undef:
4297 case ValID::t_Constant:
4298 case ValID::t_ConstantStruct:
4299 case ValID::t_PackedConstantStruct: {
4301 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4303 assert(isa<Constant>(V) && "Expected a constant value");
4304 C = cast<Constant>(V);
4308 return Error(Loc, "expected a constant value");
4312 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4313 OperatorConstraint OC) {
4316 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4319 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4321 return ParseType(Ty) ||
4322 ParseValue(Ty, V, PFS);
4325 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4326 PerFunctionState &PFS) {
4329 if (ParseTypeAndValue(V, PFS)) return true;
4330 if (!isa<BasicBlock>(V))
4331 return Error(Loc, "expected a basic block");
4332 BB = cast<BasicBlock>(V);
4338 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4339 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4340 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4341 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4342 // Parse the linkage.
4343 LocTy LinkageLoc = Lex.getLoc();
4346 unsigned Visibility;
4347 unsigned DLLStorageClass;
4348 AttrBuilder RetAttrs;
4350 Type *RetType = nullptr;
4351 LocTy RetTypeLoc = Lex.getLoc();
4352 if (ParseOptionalLinkage(Linkage) ||
4353 ParseOptionalVisibility(Visibility) ||
4354 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4355 ParseOptionalCallingConv(CC) ||
4356 ParseOptionalReturnAttrs(RetAttrs) ||
4357 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4360 // Verify that the linkage is ok.
4361 switch ((GlobalValue::LinkageTypes)Linkage) {
4362 case GlobalValue::ExternalLinkage:
4363 break; // always ok.
4364 case GlobalValue::ExternalWeakLinkage:
4366 return Error(LinkageLoc, "invalid linkage for function definition");
4368 case GlobalValue::PrivateLinkage:
4369 case GlobalValue::InternalLinkage:
4370 case GlobalValue::AvailableExternallyLinkage:
4371 case GlobalValue::LinkOnceAnyLinkage:
4372 case GlobalValue::LinkOnceODRLinkage:
4373 case GlobalValue::WeakAnyLinkage:
4374 case GlobalValue::WeakODRLinkage:
4376 return Error(LinkageLoc, "invalid linkage for function declaration");
4378 case GlobalValue::AppendingLinkage:
4379 case GlobalValue::CommonLinkage:
4380 return Error(LinkageLoc, "invalid function linkage type");
4383 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4384 return Error(LinkageLoc,
4385 "symbol with local linkage must have default visibility");
4387 if (!FunctionType::isValidReturnType(RetType))
4388 return Error(RetTypeLoc, "invalid function return type");
4390 LocTy NameLoc = Lex.getLoc();
4392 std::string FunctionName;
4393 if (Lex.getKind() == lltok::GlobalVar) {
4394 FunctionName = Lex.getStrVal();
4395 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4396 unsigned NameID = Lex.getUIntVal();
4398 if (NameID != NumberedVals.size())
4399 return TokError("function expected to be numbered '%" +
4400 Twine(NumberedVals.size()) + "'");
4402 return TokError("expected function name");
4407 if (Lex.getKind() != lltok::lparen)
4408 return TokError("expected '(' in function argument list");
4410 SmallVector<ArgInfo, 8> ArgList;
4412 AttrBuilder FuncAttrs;
4413 std::vector<unsigned> FwdRefAttrGrps;
4415 std::string Section;
4419 LocTy UnnamedAddrLoc;
4420 Constant *Prefix = nullptr;
4421 Constant *Prologue = nullptr;
4422 Constant *PersonalityFn = nullptr;
4425 if (ParseArgumentList(ArgList, isVarArg) ||
4426 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4428 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4430 (EatIfPresent(lltok::kw_section) &&
4431 ParseStringConstant(Section)) ||
4432 parseOptionalComdat(FunctionName, C) ||
4433 ParseOptionalAlignment(Alignment) ||
4434 (EatIfPresent(lltok::kw_gc) &&
4435 ParseStringConstant(GC)) ||
4436 (EatIfPresent(lltok::kw_prefix) &&
4437 ParseGlobalTypeAndValue(Prefix)) ||
4438 (EatIfPresent(lltok::kw_prologue) &&
4439 ParseGlobalTypeAndValue(Prologue)) ||
4440 (EatIfPresent(lltok::kw_personality) &&
4441 ParseGlobalTypeAndValue(PersonalityFn)))
4444 if (FuncAttrs.contains(Attribute::Builtin))
4445 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4447 // If the alignment was parsed as an attribute, move to the alignment field.
4448 if (FuncAttrs.hasAlignmentAttr()) {
4449 Alignment = FuncAttrs.getAlignment();
4450 FuncAttrs.removeAttribute(Attribute::Alignment);
4453 // Okay, if we got here, the function is syntactically valid. Convert types
4454 // and do semantic checks.
4455 std::vector<Type*> ParamTypeList;
4456 SmallVector<AttributeSet, 8> Attrs;
4458 if (RetAttrs.hasAttributes())
4459 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4460 AttributeSet::ReturnIndex,
4463 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4464 ParamTypeList.push_back(ArgList[i].Ty);
4465 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4466 AttrBuilder B(ArgList[i].Attrs, i + 1);
4467 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4471 if (FuncAttrs.hasAttributes())
4472 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4473 AttributeSet::FunctionIndex,
4476 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4478 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4479 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4482 FunctionType::get(RetType, ParamTypeList, isVarArg);
4483 PointerType *PFT = PointerType::getUnqual(FT);
4486 if (!FunctionName.empty()) {
4487 // If this was a definition of a forward reference, remove the definition
4488 // from the forward reference table and fill in the forward ref.
4489 auto FRVI = ForwardRefVals.find(FunctionName);
4490 if (FRVI != ForwardRefVals.end()) {
4491 Fn = M->getFunction(FunctionName);
4493 return Error(FRVI->second.second, "invalid forward reference to "
4494 "function as global value!");
4495 if (Fn->getType() != PFT)
4496 return Error(FRVI->second.second, "invalid forward reference to "
4497 "function '" + FunctionName + "' with wrong type!");
4499 ForwardRefVals.erase(FRVI);
4500 } else if ((Fn = M->getFunction(FunctionName))) {
4501 // Reject redefinitions.
4502 return Error(NameLoc, "invalid redefinition of function '" +
4503 FunctionName + "'");
4504 } else if (M->getNamedValue(FunctionName)) {
4505 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4509 // If this is a definition of a forward referenced function, make sure the
4511 auto I = ForwardRefValIDs.find(NumberedVals.size());
4512 if (I != ForwardRefValIDs.end()) {
4513 Fn = cast<Function>(I->second.first);
4514 if (Fn->getType() != PFT)
4515 return Error(NameLoc, "type of definition and forward reference of '@" +
4516 Twine(NumberedVals.size()) + "' disagree");
4517 ForwardRefValIDs.erase(I);
4522 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4523 else // Move the forward-reference to the correct spot in the module.
4524 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4526 if (FunctionName.empty())
4527 NumberedVals.push_back(Fn);
4529 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4530 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4531 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4532 Fn->setCallingConv(CC);
4533 Fn->setAttributes(PAL);
4534 Fn->setUnnamedAddr(UnnamedAddr);
4535 Fn->setAlignment(Alignment);
4536 Fn->setSection(Section);
4538 Fn->setPersonalityFn(PersonalityFn);
4539 if (!GC.empty()) Fn->setGC(GC.c_str());
4540 Fn->setPrefixData(Prefix);
4541 Fn->setPrologueData(Prologue);
4542 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4544 // Add all of the arguments we parsed to the function.
4545 Function::arg_iterator ArgIt = Fn->arg_begin();
4546 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4547 // If the argument has a name, insert it into the argument symbol table.
4548 if (ArgList[i].Name.empty()) continue;
4550 // Set the name, if it conflicted, it will be auto-renamed.
4551 ArgIt->setName(ArgList[i].Name);
4553 if (ArgIt->getName() != ArgList[i].Name)
4554 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4555 ArgList[i].Name + "'");
4561 // Check the declaration has no block address forward references.
4563 if (FunctionName.empty()) {
4564 ID.Kind = ValID::t_GlobalID;
4565 ID.UIntVal = NumberedVals.size() - 1;
4567 ID.Kind = ValID::t_GlobalName;
4568 ID.StrVal = FunctionName;
4570 auto Blocks = ForwardRefBlockAddresses.find(ID);
4571 if (Blocks != ForwardRefBlockAddresses.end())
4572 return Error(Blocks->first.Loc,
4573 "cannot take blockaddress inside a declaration");
4577 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4579 if (FunctionNumber == -1) {
4580 ID.Kind = ValID::t_GlobalName;
4581 ID.StrVal = F.getName();
4583 ID.Kind = ValID::t_GlobalID;
4584 ID.UIntVal = FunctionNumber;
4587 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4588 if (Blocks == P.ForwardRefBlockAddresses.end())
4591 for (const auto &I : Blocks->second) {
4592 const ValID &BBID = I.first;
4593 GlobalValue *GV = I.second;
4595 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4596 "Expected local id or name");
4598 if (BBID.Kind == ValID::t_LocalName)
4599 BB = GetBB(BBID.StrVal, BBID.Loc);
4601 BB = GetBB(BBID.UIntVal, BBID.Loc);
4603 return P.Error(BBID.Loc, "referenced value is not a basic block");
4605 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4606 GV->eraseFromParent();
4609 P.ForwardRefBlockAddresses.erase(Blocks);
4613 /// ParseFunctionBody
4614 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4615 bool LLParser::ParseFunctionBody(Function &Fn) {
4616 if (Lex.getKind() != lltok::lbrace)
4617 return TokError("expected '{' in function body");
4618 Lex.Lex(); // eat the {.
4620 int FunctionNumber = -1;
4621 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4623 PerFunctionState PFS(*this, Fn, FunctionNumber);
4625 // Resolve block addresses and allow basic blocks to be forward-declared
4626 // within this function.
4627 if (PFS.resolveForwardRefBlockAddresses())
4629 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4631 // We need at least one basic block.
4632 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4633 return TokError("function body requires at least one basic block");
4635 while (Lex.getKind() != lltok::rbrace &&
4636 Lex.getKind() != lltok::kw_uselistorder)
4637 if (ParseBasicBlock(PFS)) return true;
4639 while (Lex.getKind() != lltok::rbrace)
4640 if (ParseUseListOrder(&PFS))
4646 // Verify function is ok.
4647 return PFS.FinishFunction();
4651 /// ::= LabelStr? Instruction*
4652 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4653 // If this basic block starts out with a name, remember it.
4655 LocTy NameLoc = Lex.getLoc();
4656 if (Lex.getKind() == lltok::LabelStr) {
4657 Name = Lex.getStrVal();
4661 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4663 return Error(NameLoc,
4664 "unable to create block named '" + Name + "'");
4666 std::string NameStr;
4668 // Parse the instructions in this block until we get a terminator.
4671 // This instruction may have three possibilities for a name: a) none
4672 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4673 LocTy NameLoc = Lex.getLoc();
4677 if (Lex.getKind() == lltok::LocalVarID) {
4678 NameID = Lex.getUIntVal();
4680 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4682 } else if (Lex.getKind() == lltok::LocalVar) {
4683 NameStr = Lex.getStrVal();
4685 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4689 switch (ParseInstruction(Inst, BB, PFS)) {
4690 default: llvm_unreachable("Unknown ParseInstruction result!");
4691 case InstError: return true;
4693 BB->getInstList().push_back(Inst);
4695 // With a normal result, we check to see if the instruction is followed by
4696 // a comma and metadata.
4697 if (EatIfPresent(lltok::comma))
4698 if (ParseInstructionMetadata(*Inst))
4701 case InstExtraComma:
4702 BB->getInstList().push_back(Inst);
4704 // If the instruction parser ate an extra comma at the end of it, it
4705 // *must* be followed by metadata.
4706 if (ParseInstructionMetadata(*Inst))
4711 // Set the name on the instruction.
4712 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4713 } while (!isa<TerminatorInst>(Inst));
4718 //===----------------------------------------------------------------------===//
4719 // Instruction Parsing.
4720 //===----------------------------------------------------------------------===//
4722 /// ParseInstruction - Parse one of the many different instructions.
4724 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4725 PerFunctionState &PFS) {
4726 lltok::Kind Token = Lex.getKind();
4727 if (Token == lltok::Eof)
4728 return TokError("found end of file when expecting more instructions");
4729 LocTy Loc = Lex.getLoc();
4730 unsigned KeywordVal = Lex.getUIntVal();
4731 Lex.Lex(); // Eat the keyword.
4734 default: return Error(Loc, "expected instruction opcode");
4735 // Terminator Instructions.
4736 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4737 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4738 case lltok::kw_br: return ParseBr(Inst, PFS);
4739 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4740 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4741 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4742 case lltok::kw_resume: return ParseResume(Inst, PFS);
4743 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4744 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4745 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4746 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4747 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4748 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4749 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4750 // Binary Operators.
4754 case lltok::kw_shl: {
4755 bool NUW = EatIfPresent(lltok::kw_nuw);
4756 bool NSW = EatIfPresent(lltok::kw_nsw);
4757 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4759 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4761 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4762 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4765 case lltok::kw_fadd:
4766 case lltok::kw_fsub:
4767 case lltok::kw_fmul:
4768 case lltok::kw_fdiv:
4769 case lltok::kw_frem: {
4770 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4771 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4775 Inst->setFastMathFlags(FMF);
4779 case lltok::kw_sdiv:
4780 case lltok::kw_udiv:
4781 case lltok::kw_lshr:
4782 case lltok::kw_ashr: {
4783 bool Exact = EatIfPresent(lltok::kw_exact);
4785 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4786 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4790 case lltok::kw_urem:
4791 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4794 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4795 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4796 case lltok::kw_fcmp: {
4797 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4798 int Res = ParseCompare(Inst, PFS, KeywordVal);
4802 Inst->setFastMathFlags(FMF);
4807 case lltok::kw_trunc:
4808 case lltok::kw_zext:
4809 case lltok::kw_sext:
4810 case lltok::kw_fptrunc:
4811 case lltok::kw_fpext:
4812 case lltok::kw_bitcast:
4813 case lltok::kw_addrspacecast:
4814 case lltok::kw_uitofp:
4815 case lltok::kw_sitofp:
4816 case lltok::kw_fptoui:
4817 case lltok::kw_fptosi:
4818 case lltok::kw_inttoptr:
4819 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4821 case lltok::kw_select: return ParseSelect(Inst, PFS);
4822 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4823 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4824 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4825 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4826 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4827 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4829 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4830 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4831 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4833 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4834 case lltok::kw_load: return ParseLoad(Inst, PFS);
4835 case lltok::kw_store: return ParseStore(Inst, PFS);
4836 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4837 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4838 case lltok::kw_fence: return ParseFence(Inst, PFS);
4839 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4840 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4841 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4845 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4846 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4847 if (Opc == Instruction::FCmp) {
4848 switch (Lex.getKind()) {
4849 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4850 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4851 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4852 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4853 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4854 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4855 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4856 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4857 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4858 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4859 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4860 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4861 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4862 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4863 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4864 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4865 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4868 switch (Lex.getKind()) {
4869 default: return TokError("expected icmp predicate (e.g. 'eq')");
4870 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4871 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4872 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4873 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4874 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4875 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4876 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4877 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4878 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4879 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4886 //===----------------------------------------------------------------------===//
4887 // Terminator Instructions.
4888 //===----------------------------------------------------------------------===//
4890 /// ParseRet - Parse a return instruction.
4891 /// ::= 'ret' void (',' !dbg, !1)*
4892 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4893 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4894 PerFunctionState &PFS) {
4895 SMLoc TypeLoc = Lex.getLoc();
4897 if (ParseType(Ty, true /*void allowed*/)) return true;
4899 Type *ResType = PFS.getFunction().getReturnType();
4901 if (Ty->isVoidTy()) {
4902 if (!ResType->isVoidTy())
4903 return Error(TypeLoc, "value doesn't match function result type '" +
4904 getTypeString(ResType) + "'");
4906 Inst = ReturnInst::Create(Context);
4911 if (ParseValue(Ty, RV, PFS)) return true;
4913 if (ResType != RV->getType())
4914 return Error(TypeLoc, "value doesn't match function result type '" +
4915 getTypeString(ResType) + "'");
4917 Inst = ReturnInst::Create(Context, RV);
4923 /// ::= 'br' TypeAndValue
4924 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4925 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4928 BasicBlock *Op1, *Op2;
4929 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4931 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4932 Inst = BranchInst::Create(BB);
4936 if (Op0->getType() != Type::getInt1Ty(Context))
4937 return Error(Loc, "branch condition must have 'i1' type");
4939 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4940 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4941 ParseToken(lltok::comma, "expected ',' after true destination") ||
4942 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4945 Inst = BranchInst::Create(Op1, Op2, Op0);
4951 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4953 /// ::= (TypeAndValue ',' TypeAndValue)*
4954 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4955 LocTy CondLoc, BBLoc;
4957 BasicBlock *DefaultBB;
4958 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4959 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4960 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4961 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4964 if (!Cond->getType()->isIntegerTy())
4965 return Error(CondLoc, "switch condition must have integer type");
4967 // Parse the jump table pairs.
4968 SmallPtrSet<Value*, 32> SeenCases;
4969 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4970 while (Lex.getKind() != lltok::rsquare) {
4974 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4975 ParseToken(lltok::comma, "expected ',' after case value") ||
4976 ParseTypeAndBasicBlock(DestBB, PFS))
4979 if (!SeenCases.insert(Constant).second)
4980 return Error(CondLoc, "duplicate case value in switch");
4981 if (!isa<ConstantInt>(Constant))
4982 return Error(CondLoc, "case value is not a constant integer");
4984 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4987 Lex.Lex(); // Eat the ']'.
4989 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4990 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4991 SI->addCase(Table[i].first, Table[i].second);
4998 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4999 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5002 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5003 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5004 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5007 if (!Address->getType()->isPointerTy())
5008 return Error(AddrLoc, "indirectbr address must have pointer type");
5010 // Parse the destination list.
5011 SmallVector<BasicBlock*, 16> DestList;
5013 if (Lex.getKind() != lltok::rsquare) {
5015 if (ParseTypeAndBasicBlock(DestBB, PFS))
5017 DestList.push_back(DestBB);
5019 while (EatIfPresent(lltok::comma)) {
5020 if (ParseTypeAndBasicBlock(DestBB, PFS))
5022 DestList.push_back(DestBB);
5026 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5029 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5030 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5031 IBI->addDestination(DestList[i]);
5038 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5039 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5040 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5041 LocTy CallLoc = Lex.getLoc();
5042 AttrBuilder RetAttrs, FnAttrs;
5043 std::vector<unsigned> FwdRefAttrGrps;
5046 Type *RetType = nullptr;
5049 SmallVector<ParamInfo, 16> ArgList;
5050 SmallVector<OperandBundleDef, 2> BundleList;
5052 BasicBlock *NormalBB, *UnwindBB;
5053 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5054 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5055 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5056 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5058 ParseOptionalOperandBundles(BundleList, PFS) ||
5059 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5060 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5061 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5062 ParseTypeAndBasicBlock(UnwindBB, PFS))
5065 // If RetType is a non-function pointer type, then this is the short syntax
5066 // for the call, which means that RetType is just the return type. Infer the
5067 // rest of the function argument types from the arguments that are present.
5068 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5070 // Pull out the types of all of the arguments...
5071 std::vector<Type*> ParamTypes;
5072 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5073 ParamTypes.push_back(ArgList[i].V->getType());
5075 if (!FunctionType::isValidReturnType(RetType))
5076 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5078 Ty = FunctionType::get(RetType, ParamTypes, false);
5083 // Look up the callee.
5085 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5088 // Set up the Attribute for the function.
5089 SmallVector<AttributeSet, 8> Attrs;
5090 if (RetAttrs.hasAttributes())
5091 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5092 AttributeSet::ReturnIndex,
5095 SmallVector<Value*, 8> Args;
5097 // Loop through FunctionType's arguments and ensure they are specified
5098 // correctly. Also, gather any parameter attributes.
5099 FunctionType::param_iterator I = Ty->param_begin();
5100 FunctionType::param_iterator E = Ty->param_end();
5101 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5102 Type *ExpectedTy = nullptr;
5105 } else if (!Ty->isVarArg()) {
5106 return Error(ArgList[i].Loc, "too many arguments specified");
5109 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5110 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5111 getTypeString(ExpectedTy) + "'");
5112 Args.push_back(ArgList[i].V);
5113 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5114 AttrBuilder B(ArgList[i].Attrs, i + 1);
5115 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5120 return Error(CallLoc, "not enough parameters specified for call");
5122 if (FnAttrs.hasAttributes()) {
5123 if (FnAttrs.hasAlignmentAttr())
5124 return Error(CallLoc, "invoke instructions may not have an alignment");
5126 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5127 AttributeSet::FunctionIndex,
5131 // Finish off the Attribute and check them
5132 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5135 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5136 II->setCallingConv(CC);
5137 II->setAttributes(PAL);
5138 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5144 /// ::= 'resume' TypeAndValue
5145 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5146 Value *Exn; LocTy ExnLoc;
5147 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5150 ResumeInst *RI = ResumeInst::Create(Exn);
5155 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5156 PerFunctionState &PFS) {
5157 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5160 while (Lex.getKind() != lltok::rsquare) {
5161 // If this isn't the first argument, we need a comma.
5162 if (!Args.empty() &&
5163 ParseToken(lltok::comma, "expected ',' in argument list"))
5166 // Parse the argument.
5168 Type *ArgTy = nullptr;
5169 if (ParseType(ArgTy, ArgLoc))
5173 if (ArgTy->isMetadataTy()) {
5174 if (ParseMetadataAsValue(V, PFS))
5177 if (ParseValue(ArgTy, V, PFS))
5183 Lex.Lex(); // Lex the ']'.
5188 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5189 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5190 Value *CleanupPad = nullptr;
5192 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5195 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5198 BasicBlock *UnwindBB = nullptr;
5199 if (Lex.getKind() == lltok::kw_to) {
5201 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5204 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5209 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5214 /// ::= 'catchret' Value 'to' TypeAndValue
5215 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5216 Value *CatchPad = nullptr;
5218 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5222 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5223 ParseTypeAndBasicBlock(BB, PFS))
5226 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5231 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5232 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5233 SmallVector<Value *, 8> Args;
5234 if (ParseExceptionArgs(Args, PFS))
5237 BasicBlock *NormalBB, *UnwindBB;
5238 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5239 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5240 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5241 ParseTypeAndBasicBlock(UnwindBB, PFS))
5244 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5248 /// ParseTerminatePad
5249 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5250 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5251 SmallVector<Value *, 8> Args;
5252 if (ParseExceptionArgs(Args, PFS))
5255 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5258 BasicBlock *UnwindBB = nullptr;
5259 if (Lex.getKind() == lltok::kw_to) {
5261 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5264 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5269 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5274 /// ::= 'cleanuppad' ParamList
5275 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5276 SmallVector<Value *, 8> Args;
5277 if (ParseExceptionArgs(Args, PFS))
5280 Inst = CleanupPadInst::Create(Context, Args);
5284 /// ParseCatchEndPad
5285 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5286 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5287 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5290 BasicBlock *UnwindBB = nullptr;
5291 if (Lex.getKind() == lltok::kw_to) {
5293 if (Lex.getKind() == lltok::kw_caller) {
5299 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5304 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5308 /// ParseCatchEndPad
5309 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5310 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5311 Value *CleanupPad = nullptr;
5313 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5316 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5319 BasicBlock *UnwindBB = nullptr;
5320 if (Lex.getKind() == lltok::kw_to) {
5322 if (Lex.getKind() == lltok::kw_caller) {
5328 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5333 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5337 //===----------------------------------------------------------------------===//
5338 // Binary Operators.
5339 //===----------------------------------------------------------------------===//
5342 /// ::= ArithmeticOps TypeAndValue ',' Value
5344 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5345 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5346 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5347 unsigned Opc, unsigned OperandType) {
5348 LocTy Loc; Value *LHS, *RHS;
5349 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5350 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5351 ParseValue(LHS->getType(), RHS, PFS))
5355 switch (OperandType) {
5356 default: llvm_unreachable("Unknown operand type!");
5357 case 0: // int or FP.
5358 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5359 LHS->getType()->isFPOrFPVectorTy();
5361 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5362 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5366 return Error(Loc, "invalid operand type for instruction");
5368 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5373 /// ::= ArithmeticOps TypeAndValue ',' Value {
5374 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5376 LocTy Loc; Value *LHS, *RHS;
5377 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5378 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5379 ParseValue(LHS->getType(), RHS, PFS))
5382 if (!LHS->getType()->isIntOrIntVectorTy())
5383 return Error(Loc,"instruction requires integer or integer vector operands");
5385 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5391 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5392 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5393 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5395 // Parse the integer/fp comparison predicate.
5399 if (ParseCmpPredicate(Pred, Opc) ||
5400 ParseTypeAndValue(LHS, Loc, PFS) ||
5401 ParseToken(lltok::comma, "expected ',' after compare value") ||
5402 ParseValue(LHS->getType(), RHS, PFS))
5405 if (Opc == Instruction::FCmp) {
5406 if (!LHS->getType()->isFPOrFPVectorTy())
5407 return Error(Loc, "fcmp requires floating point operands");
5408 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5410 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5411 if (!LHS->getType()->isIntOrIntVectorTy() &&
5412 !LHS->getType()->getScalarType()->isPointerTy())
5413 return Error(Loc, "icmp requires integer operands");
5414 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5419 //===----------------------------------------------------------------------===//
5420 // Other Instructions.
5421 //===----------------------------------------------------------------------===//
5425 /// ::= CastOpc TypeAndValue 'to' Type
5426 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5430 Type *DestTy = nullptr;
5431 if (ParseTypeAndValue(Op, Loc, PFS) ||
5432 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5436 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5437 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5438 return Error(Loc, "invalid cast opcode for cast from '" +
5439 getTypeString(Op->getType()) + "' to '" +
5440 getTypeString(DestTy) + "'");
5442 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5447 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5448 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5450 Value *Op0, *Op1, *Op2;
5451 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5452 ParseToken(lltok::comma, "expected ',' after select condition") ||
5453 ParseTypeAndValue(Op1, PFS) ||
5454 ParseToken(lltok::comma, "expected ',' after select value") ||
5455 ParseTypeAndValue(Op2, PFS))
5458 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5459 return Error(Loc, Reason);
5461 Inst = SelectInst::Create(Op0, Op1, Op2);
5466 /// ::= 'va_arg' TypeAndValue ',' Type
5467 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5469 Type *EltTy = nullptr;
5471 if (ParseTypeAndValue(Op, PFS) ||
5472 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5473 ParseType(EltTy, TypeLoc))
5476 if (!EltTy->isFirstClassType())
5477 return Error(TypeLoc, "va_arg requires operand with first class type");
5479 Inst = new VAArgInst(Op, EltTy);
5483 /// ParseExtractElement
5484 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5485 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5488 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5489 ParseToken(lltok::comma, "expected ',' after extract value") ||
5490 ParseTypeAndValue(Op1, PFS))
5493 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5494 return Error(Loc, "invalid extractelement operands");
5496 Inst = ExtractElementInst::Create(Op0, Op1);
5500 /// ParseInsertElement
5501 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5502 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5504 Value *Op0, *Op1, *Op2;
5505 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5506 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5507 ParseTypeAndValue(Op1, PFS) ||
5508 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5509 ParseTypeAndValue(Op2, PFS))
5512 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5513 return Error(Loc, "invalid insertelement operands");
5515 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5519 /// ParseShuffleVector
5520 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5521 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5523 Value *Op0, *Op1, *Op2;
5524 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5525 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5526 ParseTypeAndValue(Op1, PFS) ||
5527 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5528 ParseTypeAndValue(Op2, PFS))
5531 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5532 return Error(Loc, "invalid shufflevector operands");
5534 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5539 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5540 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5541 Type *Ty = nullptr; LocTy TypeLoc;
5544 if (ParseType(Ty, TypeLoc) ||
5545 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5546 ParseValue(Ty, Op0, PFS) ||
5547 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5548 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5549 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5552 bool AteExtraComma = false;
5553 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5555 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5557 if (!EatIfPresent(lltok::comma))
5560 if (Lex.getKind() == lltok::MetadataVar) {
5561 AteExtraComma = true;
5565 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5566 ParseValue(Ty, Op0, PFS) ||
5567 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5568 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5569 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5573 if (!Ty->isFirstClassType())
5574 return Error(TypeLoc, "phi node must have first class type");
5576 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5577 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5578 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5580 return AteExtraComma ? InstExtraComma : InstNormal;
5584 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5586 /// ::= 'catch' TypeAndValue
5588 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5589 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5590 Type *Ty = nullptr; LocTy TyLoc;
5592 if (ParseType(Ty, TyLoc))
5595 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5596 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5598 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5599 LandingPadInst::ClauseType CT;
5600 if (EatIfPresent(lltok::kw_catch))
5601 CT = LandingPadInst::Catch;
5602 else if (EatIfPresent(lltok::kw_filter))
5603 CT = LandingPadInst::Filter;
5605 return TokError("expected 'catch' or 'filter' clause type");
5609 if (ParseTypeAndValue(V, VLoc, PFS))
5612 // A 'catch' type expects a non-array constant. A filter clause expects an
5614 if (CT == LandingPadInst::Catch) {
5615 if (isa<ArrayType>(V->getType()))
5616 Error(VLoc, "'catch' clause has an invalid type");
5618 if (!isa<ArrayType>(V->getType()))
5619 Error(VLoc, "'filter' clause has an invalid type");
5622 Constant *CV = dyn_cast<Constant>(V);
5624 return Error(VLoc, "clause argument must be a constant");
5628 Inst = LP.release();
5633 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5634 /// ParameterList OptionalAttrs
5635 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5636 /// ParameterList OptionalAttrs
5637 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5638 /// ParameterList OptionalAttrs
5639 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5640 CallInst::TailCallKind TCK) {
5641 AttrBuilder RetAttrs, FnAttrs;
5642 std::vector<unsigned> FwdRefAttrGrps;
5645 Type *RetType = nullptr;
5648 SmallVector<ParamInfo, 16> ArgList;
5649 SmallVector<OperandBundleDef, 2> BundleList;
5650 LocTy CallLoc = Lex.getLoc();
5652 if ((TCK != CallInst::TCK_None &&
5653 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5654 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5655 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5656 ParseValID(CalleeID) ||
5657 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5658 PFS.getFunction().isVarArg()) ||
5659 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5660 ParseOptionalOperandBundles(BundleList, PFS))
5663 // If RetType is a non-function pointer type, then this is the short syntax
5664 // for the call, which means that RetType is just the return type. Infer the
5665 // rest of the function argument types from the arguments that are present.
5666 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5668 // Pull out the types of all of the arguments...
5669 std::vector<Type*> ParamTypes;
5670 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5671 ParamTypes.push_back(ArgList[i].V->getType());
5673 if (!FunctionType::isValidReturnType(RetType))
5674 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5676 Ty = FunctionType::get(RetType, ParamTypes, false);
5681 // Look up the callee.
5683 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5686 // Set up the Attribute for the function.
5687 SmallVector<AttributeSet, 8> Attrs;
5688 if (RetAttrs.hasAttributes())
5689 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5690 AttributeSet::ReturnIndex,
5693 SmallVector<Value*, 8> Args;
5695 // Loop through FunctionType's arguments and ensure they are specified
5696 // correctly. Also, gather any parameter attributes.
5697 FunctionType::param_iterator I = Ty->param_begin();
5698 FunctionType::param_iterator E = Ty->param_end();
5699 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5700 Type *ExpectedTy = nullptr;
5703 } else if (!Ty->isVarArg()) {
5704 return Error(ArgList[i].Loc, "too many arguments specified");
5707 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5708 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5709 getTypeString(ExpectedTy) + "'");
5710 Args.push_back(ArgList[i].V);
5711 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5712 AttrBuilder B(ArgList[i].Attrs, i + 1);
5713 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5718 return Error(CallLoc, "not enough parameters specified for call");
5720 if (FnAttrs.hasAttributes()) {
5721 if (FnAttrs.hasAlignmentAttr())
5722 return Error(CallLoc, "call instructions may not have an alignment");
5724 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5725 AttributeSet::FunctionIndex,
5729 // Finish off the Attribute and check them
5730 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5732 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5733 CI->setTailCallKind(TCK);
5734 CI->setCallingConv(CC);
5735 CI->setAttributes(PAL);
5736 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5741 //===----------------------------------------------------------------------===//
5742 // Memory Instructions.
5743 //===----------------------------------------------------------------------===//
5746 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5747 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5748 Value *Size = nullptr;
5749 LocTy SizeLoc, TyLoc;
5750 unsigned Alignment = 0;
5753 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5755 if (ParseType(Ty, TyLoc)) return true;
5757 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5758 return Error(TyLoc, "invalid type for alloca");
5760 bool AteExtraComma = false;
5761 if (EatIfPresent(lltok::comma)) {
5762 if (Lex.getKind() == lltok::kw_align) {
5763 if (ParseOptionalAlignment(Alignment)) return true;
5764 } else if (Lex.getKind() == lltok::MetadataVar) {
5765 AteExtraComma = true;
5767 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5768 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5773 if (Size && !Size->getType()->isIntegerTy())
5774 return Error(SizeLoc, "element count must have integer type");
5776 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5777 AI->setUsedWithInAlloca(IsInAlloca);
5779 return AteExtraComma ? InstExtraComma : InstNormal;
5783 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5784 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5785 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5786 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5787 Value *Val; LocTy Loc;
5788 unsigned Alignment = 0;
5789 bool AteExtraComma = false;
5790 bool isAtomic = false;
5791 AtomicOrdering Ordering = NotAtomic;
5792 SynchronizationScope Scope = CrossThread;
5794 if (Lex.getKind() == lltok::kw_atomic) {
5799 bool isVolatile = false;
5800 if (Lex.getKind() == lltok::kw_volatile) {
5806 LocTy ExplicitTypeLoc = Lex.getLoc();
5807 if (ParseType(Ty) ||
5808 ParseToken(lltok::comma, "expected comma after load's type") ||
5809 ParseTypeAndValue(Val, Loc, PFS) ||
5810 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5811 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5814 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5815 return Error(Loc, "load operand must be a pointer to a first class type");
5816 if (isAtomic && !Alignment)
5817 return Error(Loc, "atomic load must have explicit non-zero alignment");
5818 if (Ordering == Release || Ordering == AcquireRelease)
5819 return Error(Loc, "atomic load cannot use Release ordering");
5821 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5822 return Error(ExplicitTypeLoc,
5823 "explicit pointee type doesn't match operand's pointee type");
5825 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5826 return AteExtraComma ? InstExtraComma : InstNormal;
5831 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5832 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5833 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5834 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5835 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5836 unsigned Alignment = 0;
5837 bool AteExtraComma = false;
5838 bool isAtomic = false;
5839 AtomicOrdering Ordering = NotAtomic;
5840 SynchronizationScope Scope = CrossThread;
5842 if (Lex.getKind() == lltok::kw_atomic) {
5847 bool isVolatile = false;
5848 if (Lex.getKind() == lltok::kw_volatile) {
5853 if (ParseTypeAndValue(Val, Loc, PFS) ||
5854 ParseToken(lltok::comma, "expected ',' after store operand") ||
5855 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5856 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5857 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5860 if (!Ptr->getType()->isPointerTy())
5861 return Error(PtrLoc, "store operand must be a pointer");
5862 if (!Val->getType()->isFirstClassType())
5863 return Error(Loc, "store operand must be a first class value");
5864 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5865 return Error(Loc, "stored value and pointer type do not match");
5866 if (isAtomic && !Alignment)
5867 return Error(Loc, "atomic store must have explicit non-zero alignment");
5868 if (Ordering == Acquire || Ordering == AcquireRelease)
5869 return Error(Loc, "atomic store cannot use Acquire ordering");
5871 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5872 return AteExtraComma ? InstExtraComma : InstNormal;
5876 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5877 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5878 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5879 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5880 bool AteExtraComma = false;
5881 AtomicOrdering SuccessOrdering = NotAtomic;
5882 AtomicOrdering FailureOrdering = NotAtomic;
5883 SynchronizationScope Scope = CrossThread;
5884 bool isVolatile = false;
5885 bool isWeak = false;
5887 if (EatIfPresent(lltok::kw_weak))
5890 if (EatIfPresent(lltok::kw_volatile))
5893 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5894 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5895 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5896 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5897 ParseTypeAndValue(New, NewLoc, PFS) ||
5898 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5899 ParseOrdering(FailureOrdering))
5902 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5903 return TokError("cmpxchg cannot be unordered");
5904 if (SuccessOrdering < FailureOrdering)
5905 return TokError("cmpxchg must be at least as ordered on success as failure");
5906 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5907 return TokError("cmpxchg failure ordering cannot include release semantics");
5908 if (!Ptr->getType()->isPointerTy())
5909 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5910 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5911 return Error(CmpLoc, "compare value and pointer type do not match");
5912 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5913 return Error(NewLoc, "new value and pointer type do not match");
5914 if (!New->getType()->isIntegerTy())
5915 return Error(NewLoc, "cmpxchg operand must be an integer");
5916 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5917 if (Size < 8 || (Size & (Size - 1)))
5918 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5921 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5922 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5923 CXI->setVolatile(isVolatile);
5924 CXI->setWeak(isWeak);
5926 return AteExtraComma ? InstExtraComma : InstNormal;
5930 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5931 /// 'singlethread'? AtomicOrdering
5932 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5933 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5934 bool AteExtraComma = false;
5935 AtomicOrdering Ordering = NotAtomic;
5936 SynchronizationScope Scope = CrossThread;
5937 bool isVolatile = false;
5938 AtomicRMWInst::BinOp Operation;
5940 if (EatIfPresent(lltok::kw_volatile))
5943 switch (Lex.getKind()) {
5944 default: return TokError("expected binary operation in atomicrmw");
5945 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5946 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5947 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5948 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5949 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5950 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5951 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5952 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5953 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5954 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5955 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5957 Lex.Lex(); // Eat the operation.
5959 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5960 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5961 ParseTypeAndValue(Val, ValLoc, PFS) ||
5962 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5965 if (Ordering == Unordered)
5966 return TokError("atomicrmw cannot be unordered");
5967 if (!Ptr->getType()->isPointerTy())
5968 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5969 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5970 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5971 if (!Val->getType()->isIntegerTy())
5972 return Error(ValLoc, "atomicrmw operand must be an integer");
5973 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5974 if (Size < 8 || (Size & (Size - 1)))
5975 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5978 AtomicRMWInst *RMWI =
5979 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5980 RMWI->setVolatile(isVolatile);
5982 return AteExtraComma ? InstExtraComma : InstNormal;
5986 /// ::= 'fence' 'singlethread'? AtomicOrdering
5987 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5988 AtomicOrdering Ordering = NotAtomic;
5989 SynchronizationScope Scope = CrossThread;
5990 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5993 if (Ordering == Unordered)
5994 return TokError("fence cannot be unordered");
5995 if (Ordering == Monotonic)
5996 return TokError("fence cannot be monotonic");
5998 Inst = new FenceInst(Context, Ordering, Scope);
6002 /// ParseGetElementPtr
6003 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6004 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6005 Value *Ptr = nullptr;
6006 Value *Val = nullptr;
6009 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6012 LocTy ExplicitTypeLoc = Lex.getLoc();
6013 if (ParseType(Ty) ||
6014 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6015 ParseTypeAndValue(Ptr, Loc, PFS))
6018 Type *BaseType = Ptr->getType();
6019 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6020 if (!BasePointerType)
6021 return Error(Loc, "base of getelementptr must be a pointer");
6023 if (Ty != BasePointerType->getElementType())
6024 return Error(ExplicitTypeLoc,
6025 "explicit pointee type doesn't match operand's pointee type");
6027 SmallVector<Value*, 16> Indices;
6028 bool AteExtraComma = false;
6029 // GEP returns a vector of pointers if at least one of parameters is a vector.
6030 // All vector parameters should have the same vector width.
6031 unsigned GEPWidth = BaseType->isVectorTy() ?
6032 BaseType->getVectorNumElements() : 0;
6034 while (EatIfPresent(lltok::comma)) {
6035 if (Lex.getKind() == lltok::MetadataVar) {
6036 AteExtraComma = true;
6039 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6040 if (!Val->getType()->getScalarType()->isIntegerTy())
6041 return Error(EltLoc, "getelementptr index must be an integer");
6043 if (Val->getType()->isVectorTy()) {
6044 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6045 if (GEPWidth && GEPWidth != ValNumEl)
6046 return Error(EltLoc,
6047 "getelementptr vector index has a wrong number of elements");
6048 GEPWidth = ValNumEl;
6050 Indices.push_back(Val);
6053 SmallPtrSet<Type*, 4> Visited;
6054 if (!Indices.empty() && !Ty->isSized(&Visited))
6055 return Error(Loc, "base element of getelementptr must be sized");
6057 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6058 return Error(Loc, "invalid getelementptr indices");
6059 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6061 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6062 return AteExtraComma ? InstExtraComma : InstNormal;
6065 /// ParseExtractValue
6066 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6067 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6068 Value *Val; LocTy Loc;
6069 SmallVector<unsigned, 4> Indices;
6071 if (ParseTypeAndValue(Val, Loc, PFS) ||
6072 ParseIndexList(Indices, AteExtraComma))
6075 if (!Val->getType()->isAggregateType())
6076 return Error(Loc, "extractvalue operand must be aggregate type");
6078 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6079 return Error(Loc, "invalid indices for extractvalue");
6080 Inst = ExtractValueInst::Create(Val, Indices);
6081 return AteExtraComma ? InstExtraComma : InstNormal;
6084 /// ParseInsertValue
6085 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6086 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6087 Value *Val0, *Val1; LocTy Loc0, Loc1;
6088 SmallVector<unsigned, 4> Indices;
6090 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6091 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6092 ParseTypeAndValue(Val1, Loc1, PFS) ||
6093 ParseIndexList(Indices, AteExtraComma))
6096 if (!Val0->getType()->isAggregateType())
6097 return Error(Loc0, "insertvalue operand must be aggregate type");
6099 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6101 return Error(Loc0, "invalid indices for insertvalue");
6102 if (IndexedType != Val1->getType())
6103 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6104 getTypeString(Val1->getType()) + "' instead of '" +
6105 getTypeString(IndexedType) + "'");
6106 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6107 return AteExtraComma ? InstExtraComma : InstNormal;
6110 //===----------------------------------------------------------------------===//
6111 // Embedded metadata.
6112 //===----------------------------------------------------------------------===//
6114 /// ParseMDNodeVector
6115 /// ::= { Element (',' Element)* }
6117 /// ::= 'null' | TypeAndValue
6118 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6119 if (ParseToken(lltok::lbrace, "expected '{' here"))
6122 // Check for an empty list.
6123 if (EatIfPresent(lltok::rbrace))
6127 // Null is a special case since it is typeless.
6128 if (EatIfPresent(lltok::kw_null)) {
6129 Elts.push_back(nullptr);
6134 if (ParseMetadata(MD, nullptr))
6137 } while (EatIfPresent(lltok::comma));
6139 return ParseToken(lltok::rbrace, "expected end of metadata node");
6142 //===----------------------------------------------------------------------===//
6143 // Use-list order directives.
6144 //===----------------------------------------------------------------------===//
6145 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6148 return Error(Loc, "value has no uses");
6150 unsigned NumUses = 0;
6151 SmallDenseMap<const Use *, unsigned, 16> Order;
6152 for (const Use &U : V->uses()) {
6153 if (++NumUses > Indexes.size())
6155 Order[&U] = Indexes[NumUses - 1];
6158 return Error(Loc, "value only has one use");
6159 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6160 return Error(Loc, "wrong number of indexes, expected " +
6161 Twine(std::distance(V->use_begin(), V->use_end())));
6163 V->sortUseList([&](const Use &L, const Use &R) {
6164 return Order.lookup(&L) < Order.lookup(&R);
6169 /// ParseUseListOrderIndexes
6170 /// ::= '{' uint32 (',' uint32)+ '}'
6171 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6172 SMLoc Loc = Lex.getLoc();
6173 if (ParseToken(lltok::lbrace, "expected '{' here"))
6175 if (Lex.getKind() == lltok::rbrace)
6176 return Lex.Error("expected non-empty list of uselistorder indexes");
6178 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6179 // indexes should be distinct numbers in the range [0, size-1], and should
6181 unsigned Offset = 0;
6183 bool IsOrdered = true;
6184 assert(Indexes.empty() && "Expected empty order vector");
6187 if (ParseUInt32(Index))
6190 // Update consistency checks.
6191 Offset += Index - Indexes.size();
6192 Max = std::max(Max, Index);
6193 IsOrdered &= Index == Indexes.size();
6195 Indexes.push_back(Index);
6196 } while (EatIfPresent(lltok::comma));
6198 if (ParseToken(lltok::rbrace, "expected '}' here"))
6201 if (Indexes.size() < 2)
6202 return Error(Loc, "expected >= 2 uselistorder indexes");
6203 if (Offset != 0 || Max >= Indexes.size())
6204 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6206 return Error(Loc, "expected uselistorder indexes to change the order");
6211 /// ParseUseListOrder
6212 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6213 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6214 SMLoc Loc = Lex.getLoc();
6215 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6219 SmallVector<unsigned, 16> Indexes;
6220 if (ParseTypeAndValue(V, PFS) ||
6221 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6222 ParseUseListOrderIndexes(Indexes))
6225 return sortUseListOrder(V, Indexes, Loc);
6228 /// ParseUseListOrderBB
6229 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6230 bool LLParser::ParseUseListOrderBB() {
6231 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6232 SMLoc Loc = Lex.getLoc();
6236 SmallVector<unsigned, 16> Indexes;
6237 if (ParseValID(Fn) ||
6238 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6239 ParseValID(Label) ||
6240 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6241 ParseUseListOrderIndexes(Indexes))
6244 // Check the function.
6246 if (Fn.Kind == ValID::t_GlobalName)
6247 GV = M->getNamedValue(Fn.StrVal);
6248 else if (Fn.Kind == ValID::t_GlobalID)
6249 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6251 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6253 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6254 auto *F = dyn_cast<Function>(GV);
6256 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6257 if (F->isDeclaration())
6258 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6260 // Check the basic block.
6261 if (Label.Kind == ValID::t_LocalID)
6262 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6263 if (Label.Kind != ValID::t_LocalName)
6264 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6265 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6267 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6268 if (!isa<BasicBlock>(V))
6269 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6271 return sortUseListOrder(V, Indexes, Loc);