1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/AsmParser/SlotMapping.h"
18 #include "llvm/IR/AutoUpgrade.h"
19 #include "llvm/IR/CallingConv.h"
20 #include "llvm/IR/Constants.h"
21 #include "llvm/IR/DebugInfo.h"
22 #include "llvm/IR/DebugInfoMetadata.h"
23 #include "llvm/IR/DerivedTypes.h"
24 #include "llvm/IR/InlineAsm.h"
25 #include "llvm/IR/Instructions.h"
26 #include "llvm/IR/LLVMContext.h"
27 #include "llvm/IR/Module.h"
28 #include "llvm/IR/Operator.h"
29 #include "llvm/IR/ValueSymbolTable.h"
30 #include "llvm/Support/Dwarf.h"
31 #include "llvm/Support/ErrorHandling.h"
32 #include "llvm/Support/SaveAndRestore.h"
33 #include "llvm/Support/raw_ostream.h"
36 static std::string getTypeString(Type *T) {
38 raw_string_ostream Tmp(Result);
43 /// Run: module ::= toplevelentity*
44 bool LLParser::Run() {
48 return ParseTopLevelEntities() ||
49 ValidateEndOfModule();
52 bool LLParser::parseStandaloneConstantValue(Constant *&C,
53 const SlotMapping *Slots) {
54 restoreParsingState(Slots);
58 if (ParseType(Ty) || parseConstantValue(Ty, C))
60 if (Lex.getKind() != lltok::Eof)
61 return Error(Lex.getLoc(), "expected end of string");
65 void LLParser::restoreParsingState(const SlotMapping *Slots) {
68 NumberedVals = Slots->GlobalValues;
69 NumberedMetadata = Slots->MetadataNodes;
70 for (const auto &I : Slots->NamedTypes)
72 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
73 for (const auto &I : Slots->Types)
75 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
78 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
80 bool LLParser::ValidateEndOfModule() {
81 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
82 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
84 // Handle any function attribute group forward references.
85 for (std::map<Value*, std::vector<unsigned> >::iterator
86 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
89 std::vector<unsigned> &Vec = I->second;
92 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
94 B.merge(NumberedAttrBuilders[*VI]);
96 if (Function *Fn = dyn_cast<Function>(V)) {
97 AttributeSet AS = Fn->getAttributes();
98 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
99 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
100 AS.getFnAttributes());
104 // If the alignment was parsed as an attribute, move to the alignment
106 if (FnAttrs.hasAlignmentAttr()) {
107 Fn->setAlignment(FnAttrs.getAlignment());
108 FnAttrs.removeAttribute(Attribute::Alignment);
111 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
112 AttributeSet::get(Context,
113 AttributeSet::FunctionIndex,
115 Fn->setAttributes(AS);
116 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
117 AttributeSet AS = CI->getAttributes();
118 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
119 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
120 AS.getFnAttributes());
122 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
123 AttributeSet::get(Context,
124 AttributeSet::FunctionIndex,
126 CI->setAttributes(AS);
127 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
128 AttributeSet AS = II->getAttributes();
129 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
130 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
131 AS.getFnAttributes());
133 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
134 AttributeSet::get(Context,
135 AttributeSet::FunctionIndex,
137 II->setAttributes(AS);
139 llvm_unreachable("invalid object with forward attribute group reference");
143 // If there are entries in ForwardRefBlockAddresses at this point, the
144 // function was never defined.
145 if (!ForwardRefBlockAddresses.empty())
146 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
147 "expected function name in blockaddress");
149 for (const auto &NT : NumberedTypes)
150 if (NT.second.second.isValid())
151 return Error(NT.second.second,
152 "use of undefined type '%" + Twine(NT.first) + "'");
154 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
155 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
156 if (I->second.second.isValid())
157 return Error(I->second.second,
158 "use of undefined type named '" + I->getKey() + "'");
160 if (!ForwardRefComdats.empty())
161 return Error(ForwardRefComdats.begin()->second,
162 "use of undefined comdat '$" +
163 ForwardRefComdats.begin()->first + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
180 // Resolve metadata cycles.
181 for (auto &N : NumberedMetadata) {
182 if (N.second && !N.second->isResolved())
183 N.second->resolveCycles();
186 // Look for intrinsic functions and CallInst that need to be upgraded
187 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
188 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
190 UpgradeDebugInfo(*M);
194 // Initialize the slot mapping.
195 // Because by this point we've parsed and validated everything, we can "steal"
196 // the mapping from LLParser as it doesn't need it anymore.
197 Slots->GlobalValues = std::move(NumberedVals);
198 Slots->MetadataNodes = std::move(NumberedMetadata);
199 for (const auto &I : NamedTypes)
200 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
201 for (const auto &I : NumberedTypes)
202 Slots->Types.insert(std::make_pair(I.first, I.second.first));
207 //===----------------------------------------------------------------------===//
208 // Top-Level Entities
209 //===----------------------------------------------------------------------===//
211 bool LLParser::ParseTopLevelEntities() {
213 switch (Lex.getKind()) {
214 default: return TokError("expected top-level entity");
215 case lltok::Eof: return false;
216 case lltok::kw_declare: if (ParseDeclare()) return true; break;
217 case lltok::kw_define: if (ParseDefine()) return true; break;
218 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
219 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
220 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
221 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
222 case lltok::LocalVar: if (ParseNamedType()) return true; break;
223 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
224 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
225 case lltok::ComdatVar: if (parseComdat()) return true; break;
226 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
227 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
229 // The Global variable production with no name can have many different
230 // optional leading prefixes, the production is:
231 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
232 // OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
233 // ('constant'|'global') ...
234 case lltok::kw_private: // OptionalLinkage
235 case lltok::kw_internal: // OptionalLinkage
236 case lltok::kw_weak: // OptionalLinkage
237 case lltok::kw_weak_odr: // OptionalLinkage
238 case lltok::kw_linkonce: // OptionalLinkage
239 case lltok::kw_linkonce_odr: // OptionalLinkage
240 case lltok::kw_appending: // OptionalLinkage
241 case lltok::kw_common: // OptionalLinkage
242 case lltok::kw_extern_weak: // OptionalLinkage
243 case lltok::kw_external: // OptionalLinkage
244 case lltok::kw_default: // OptionalVisibility
245 case lltok::kw_hidden: // OptionalVisibility
246 case lltok::kw_protected: // OptionalVisibility
247 case lltok::kw_dllimport: // OptionalDLLStorageClass
248 case lltok::kw_dllexport: // OptionalDLLStorageClass
249 case lltok::kw_thread_local: // OptionalThreadLocal
250 case lltok::kw_addrspace: // OptionalAddrSpace
251 case lltok::kw_constant: // GlobalType
252 case lltok::kw_global: { // GlobalType
253 unsigned Linkage, Visibility, DLLStorageClass;
255 GlobalVariable::ThreadLocalMode TLM;
257 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
258 ParseOptionalVisibility(Visibility) ||
259 ParseOptionalDLLStorageClass(DLLStorageClass) ||
260 ParseOptionalThreadLocal(TLM) ||
261 parseOptionalUnnamedAddr(UnnamedAddr) ||
262 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
263 DLLStorageClass, TLM, UnnamedAddr))
268 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
269 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
270 case lltok::kw_uselistorder_bb:
271 if (ParseUseListOrderBB()) return true; break;
278 /// ::= 'module' 'asm' STRINGCONSTANT
279 bool LLParser::ParseModuleAsm() {
280 assert(Lex.getKind() == lltok::kw_module);
284 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
285 ParseStringConstant(AsmStr)) return true;
287 M->appendModuleInlineAsm(AsmStr);
292 /// ::= 'target' 'triple' '=' STRINGCONSTANT
293 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
294 bool LLParser::ParseTargetDefinition() {
295 assert(Lex.getKind() == lltok::kw_target);
298 default: return TokError("unknown target property");
299 case lltok::kw_triple:
301 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
302 ParseStringConstant(Str))
304 M->setTargetTriple(Str);
306 case lltok::kw_datalayout:
308 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
309 ParseStringConstant(Str))
311 M->setDataLayout(Str);
317 /// ::= 'deplibs' '=' '[' ']'
318 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
319 /// FIXME: Remove in 4.0. Currently parse, but ignore.
320 bool LLParser::ParseDepLibs() {
321 assert(Lex.getKind() == lltok::kw_deplibs);
323 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
324 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
327 if (EatIfPresent(lltok::rsquare))
332 if (ParseStringConstant(Str)) return true;
333 } while (EatIfPresent(lltok::comma));
335 return ParseToken(lltok::rsquare, "expected ']' at end of list");
338 /// ParseUnnamedType:
339 /// ::= LocalVarID '=' 'type' type
340 bool LLParser::ParseUnnamedType() {
341 LocTy TypeLoc = Lex.getLoc();
342 unsigned TypeID = Lex.getUIntVal();
343 Lex.Lex(); // eat LocalVarID;
345 if (ParseToken(lltok::equal, "expected '=' after name") ||
346 ParseToken(lltok::kw_type, "expected 'type' after '='"))
349 Type *Result = nullptr;
350 if (ParseStructDefinition(TypeLoc, "",
351 NumberedTypes[TypeID], Result)) return true;
353 if (!isa<StructType>(Result)) {
354 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
356 return Error(TypeLoc, "non-struct types may not be recursive");
357 Entry.first = Result;
358 Entry.second = SMLoc();
366 /// ::= LocalVar '=' 'type' type
367 bool LLParser::ParseNamedType() {
368 std::string Name = Lex.getStrVal();
369 LocTy NameLoc = Lex.getLoc();
370 Lex.Lex(); // eat LocalVar.
372 if (ParseToken(lltok::equal, "expected '=' after name") ||
373 ParseToken(lltok::kw_type, "expected 'type' after name"))
376 Type *Result = nullptr;
377 if (ParseStructDefinition(NameLoc, Name,
378 NamedTypes[Name], Result)) return true;
380 if (!isa<StructType>(Result)) {
381 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
383 return Error(NameLoc, "non-struct types may not be recursive");
384 Entry.first = Result;
385 Entry.second = SMLoc();
393 /// ::= 'declare' FunctionHeader
394 bool LLParser::ParseDeclare() {
395 assert(Lex.getKind() == lltok::kw_declare);
399 return ParseFunctionHeader(F, false);
403 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
404 bool LLParser::ParseDefine() {
405 assert(Lex.getKind() == lltok::kw_define);
409 return ParseFunctionHeader(F, true) ||
410 ParseOptionalFunctionMetadata(*F) ||
411 ParseFunctionBody(*F);
417 bool LLParser::ParseGlobalType(bool &IsConstant) {
418 if (Lex.getKind() == lltok::kw_constant)
420 else if (Lex.getKind() == lltok::kw_global)
424 return TokError("expected 'global' or 'constant'");
430 /// ParseUnnamedGlobal:
431 /// OptionalVisibility ALIAS ...
432 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
433 /// ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
436 /// ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility, DLLStorageClass;
455 GlobalVariable::ThreadLocalMode TLM;
457 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
458 ParseOptionalVisibility(Visibility) ||
459 ParseOptionalDLLStorageClass(DLLStorageClass) ||
460 ParseOptionalThreadLocal(TLM) ||
461 parseOptionalUnnamedAddr(UnnamedAddr))
464 if (Lex.getKind() != lltok::kw_alias)
465 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
466 DLLStorageClass, TLM, UnnamedAddr);
467 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
471 /// ParseNamedGlobal:
472 /// GlobalVar '=' OptionalVisibility ALIAS ...
473 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
474 /// ... -> global variable
475 bool LLParser::ParseNamedGlobal() {
476 assert(Lex.getKind() == lltok::GlobalVar);
477 LocTy NameLoc = Lex.getLoc();
478 std::string Name = Lex.getStrVal();
482 unsigned Linkage, Visibility, DLLStorageClass;
483 GlobalVariable::ThreadLocalMode TLM;
485 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
486 ParseOptionalLinkage(Linkage, HasLinkage) ||
487 ParseOptionalVisibility(Visibility) ||
488 ParseOptionalDLLStorageClass(DLLStorageClass) ||
489 ParseOptionalThreadLocal(TLM) ||
490 parseOptionalUnnamedAddr(UnnamedAddr))
493 if (Lex.getKind() != lltok::kw_alias)
494 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
495 DLLStorageClass, TLM, UnnamedAddr);
497 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
501 bool LLParser::parseComdat() {
502 assert(Lex.getKind() == lltok::ComdatVar);
503 std::string Name = Lex.getStrVal();
504 LocTy NameLoc = Lex.getLoc();
507 if (ParseToken(lltok::equal, "expected '=' here"))
510 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
511 return TokError("expected comdat type");
513 Comdat::SelectionKind SK;
514 switch (Lex.getKind()) {
516 return TokError("unknown selection kind");
520 case lltok::kw_exactmatch:
521 SK = Comdat::ExactMatch;
523 case lltok::kw_largest:
524 SK = Comdat::Largest;
526 case lltok::kw_noduplicates:
527 SK = Comdat::NoDuplicates;
529 case lltok::kw_samesize:
530 SK = Comdat::SameSize;
535 // See if the comdat was forward referenced, if so, use the comdat.
536 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
537 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
538 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
539 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
542 if (I != ComdatSymTab.end())
545 C = M->getOrInsertComdat(Name);
546 C->setSelectionKind(SK);
552 // ::= '!' STRINGCONSTANT
553 bool LLParser::ParseMDString(MDString *&Result) {
555 if (ParseStringConstant(Str)) return true;
556 llvm::UpgradeMDStringConstant(Str);
557 Result = MDString::get(Context, Str);
562 // ::= '!' MDNodeNumber
563 bool LLParser::ParseMDNodeID(MDNode *&Result) {
564 // !{ ..., !42, ... }
566 if (ParseUInt32(MID))
569 // If not a forward reference, just return it now.
570 if (NumberedMetadata.count(MID)) {
571 Result = NumberedMetadata[MID];
575 // Otherwise, create MDNode forward reference.
576 auto &FwdRef = ForwardRefMDNodes[MID];
577 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
579 Result = FwdRef.first.get();
580 NumberedMetadata[MID].reset(Result);
584 /// ParseNamedMetadata:
585 /// !foo = !{ !1, !2 }
586 bool LLParser::ParseNamedMetadata() {
587 assert(Lex.getKind() == lltok::MetadataVar);
588 std::string Name = Lex.getStrVal();
591 if (ParseToken(lltok::equal, "expected '=' here") ||
592 ParseToken(lltok::exclaim, "Expected '!' here") ||
593 ParseToken(lltok::lbrace, "Expected '{' here"))
596 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
597 if (Lex.getKind() != lltok::rbrace)
599 if (ParseToken(lltok::exclaim, "Expected '!' here"))
603 if (ParseMDNodeID(N)) return true;
605 } while (EatIfPresent(lltok::comma));
607 return ParseToken(lltok::rbrace, "expected end of metadata node");
610 /// ParseStandaloneMetadata:
612 bool LLParser::ParseStandaloneMetadata() {
613 assert(Lex.getKind() == lltok::exclaim);
615 unsigned MetadataID = 0;
618 if (ParseUInt32(MetadataID) ||
619 ParseToken(lltok::equal, "expected '=' here"))
622 // Detect common error, from old metadata syntax.
623 if (Lex.getKind() == lltok::Type)
624 return TokError("unexpected type in metadata definition");
626 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
627 if (Lex.getKind() == lltok::MetadataVar) {
628 if (ParseSpecializedMDNode(Init, IsDistinct))
630 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
631 ParseMDTuple(Init, IsDistinct))
634 // See if this was forward referenced, if so, handle it.
635 auto FI = ForwardRefMDNodes.find(MetadataID);
636 if (FI != ForwardRefMDNodes.end()) {
637 FI->second.first->replaceAllUsesWith(Init);
638 ForwardRefMDNodes.erase(FI);
640 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
642 if (NumberedMetadata.count(MetadataID))
643 return TokError("Metadata id is already used");
644 NumberedMetadata[MetadataID].reset(Init);
650 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
651 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
652 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
656 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
657 /// OptionalDLLStorageClass OptionalThreadLocal
658 /// OptionalUnnamedAddr 'alias' Aliasee
663 /// Everything through OptionalUnnamedAddr has already been parsed.
665 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
666 unsigned Visibility, unsigned DLLStorageClass,
667 GlobalVariable::ThreadLocalMode TLM,
669 assert(Lex.getKind() == lltok::kw_alias);
672 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
674 if(!GlobalAlias::isValidLinkage(Linkage))
675 return Error(NameLoc, "invalid linkage type for alias");
677 if (!isValidVisibilityForLinkage(Visibility, L))
678 return Error(NameLoc,
679 "symbol with local linkage must have default visibility");
682 LocTy ExplicitTypeLoc = Lex.getLoc();
684 ParseToken(lltok::comma, "expected comma after alias's type"))
688 LocTy AliaseeLoc = Lex.getLoc();
689 if (Lex.getKind() != lltok::kw_bitcast &&
690 Lex.getKind() != lltok::kw_getelementptr &&
691 Lex.getKind() != lltok::kw_addrspacecast &&
692 Lex.getKind() != lltok::kw_inttoptr) {
693 if (ParseGlobalTypeAndValue(Aliasee))
696 // The bitcast dest type is not present, it is implied by the dest type.
700 if (ID.Kind != ValID::t_Constant)
701 return Error(AliaseeLoc, "invalid aliasee");
702 Aliasee = ID.ConstantVal;
705 Type *AliaseeType = Aliasee->getType();
706 auto *PTy = dyn_cast<PointerType>(AliaseeType);
708 return Error(AliaseeLoc, "An alias must have pointer type");
709 unsigned AddrSpace = PTy->getAddressSpace();
711 if (Ty != PTy->getElementType())
714 "explicit pointee type doesn't match operand's pointee type");
716 GlobalValue *GVal = nullptr;
718 // See if the alias was forward referenced, if so, prepare to replace the
719 // forward reference.
721 GVal = M->getNamedValue(Name);
723 if (!ForwardRefVals.erase(Name))
724 return Error(NameLoc, "redefinition of global '@" + Name + "'");
727 auto I = ForwardRefValIDs.find(NumberedVals.size());
728 if (I != ForwardRefValIDs.end()) {
729 GVal = I->second.first;
730 ForwardRefValIDs.erase(I);
734 // Okay, create the alias but do not insert it into the module yet.
735 std::unique_ptr<GlobalAlias> GA(
736 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
737 Name, Aliasee, /*Parent*/ nullptr));
738 GA->setThreadLocalMode(TLM);
739 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
740 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
741 GA->setUnnamedAddr(UnnamedAddr);
744 NumberedVals.push_back(GA.get());
747 // Verify that types agree.
748 if (GVal->getType() != GA->getType())
751 "forward reference and definition of alias have different types");
753 // If they agree, just RAUW the old value with the alias and remove the
755 GVal->replaceAllUsesWith(GA.get());
756 GVal->eraseFromParent();
759 // Insert into the module, we know its name won't collide now.
760 M->getAliasList().push_back(GA.get());
761 assert(GA->getName() == Name && "Should not be a name conflict!");
763 // The module owns this now
770 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
771 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
772 /// OptionalExternallyInitialized GlobalType Type Const
773 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
774 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
775 /// OptionalExternallyInitialized GlobalType Type Const
777 /// Everything up to and including OptionalUnnamedAddr has been parsed
780 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
781 unsigned Linkage, bool HasLinkage,
782 unsigned Visibility, unsigned DLLStorageClass,
783 GlobalVariable::ThreadLocalMode TLM,
785 if (!isValidVisibilityForLinkage(Visibility, Linkage))
786 return Error(NameLoc,
787 "symbol with local linkage must have default visibility");
790 bool IsConstant, IsExternallyInitialized;
791 LocTy IsExternallyInitializedLoc;
795 if (ParseOptionalAddrSpace(AddrSpace) ||
796 ParseOptionalToken(lltok::kw_externally_initialized,
797 IsExternallyInitialized,
798 &IsExternallyInitializedLoc) ||
799 ParseGlobalType(IsConstant) ||
800 ParseType(Ty, TyLoc))
803 // If the linkage is specified and is external, then no initializer is
805 Constant *Init = nullptr;
806 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
807 Linkage != GlobalValue::ExternalLinkage)) {
808 if (ParseGlobalValue(Ty, Init))
812 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
813 return Error(TyLoc, "invalid type for global variable");
815 GlobalValue *GVal = nullptr;
817 // See if the global was forward referenced, if so, use the global.
819 GVal = M->getNamedValue(Name);
821 if (!ForwardRefVals.erase(Name))
822 return Error(NameLoc, "redefinition of global '@" + Name + "'");
825 auto I = ForwardRefValIDs.find(NumberedVals.size());
826 if (I != ForwardRefValIDs.end()) {
827 GVal = I->second.first;
828 ForwardRefValIDs.erase(I);
834 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
835 Name, nullptr, GlobalVariable::NotThreadLocal,
838 if (GVal->getValueType() != Ty)
840 "forward reference and definition of global have different types");
842 GV = cast<GlobalVariable>(GVal);
844 // Move the forward-reference to the correct spot in the module.
845 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
849 NumberedVals.push_back(GV);
851 // Set the parsed properties on the global.
853 GV->setInitializer(Init);
854 GV->setConstant(IsConstant);
855 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
856 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
857 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
858 GV->setExternallyInitialized(IsExternallyInitialized);
859 GV->setThreadLocalMode(TLM);
860 GV->setUnnamedAddr(UnnamedAddr);
862 // Parse attributes on the global.
863 while (Lex.getKind() == lltok::comma) {
866 if (Lex.getKind() == lltok::kw_section) {
868 GV->setSection(Lex.getStrVal());
869 if (ParseToken(lltok::StringConstant, "expected global section string"))
871 } else if (Lex.getKind() == lltok::kw_align) {
873 if (ParseOptionalAlignment(Alignment)) return true;
874 GV->setAlignment(Alignment);
877 if (parseOptionalComdat(Name, C))
882 return TokError("unknown global variable property!");
889 /// ParseUnnamedAttrGrp
890 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
891 bool LLParser::ParseUnnamedAttrGrp() {
892 assert(Lex.getKind() == lltok::kw_attributes);
893 LocTy AttrGrpLoc = Lex.getLoc();
896 if (Lex.getKind() != lltok::AttrGrpID)
897 return TokError("expected attribute group id");
899 unsigned VarID = Lex.getUIntVal();
900 std::vector<unsigned> unused;
904 if (ParseToken(lltok::equal, "expected '=' here") ||
905 ParseToken(lltok::lbrace, "expected '{' here") ||
906 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
908 ParseToken(lltok::rbrace, "expected end of attribute group"))
911 if (!NumberedAttrBuilders[VarID].hasAttributes())
912 return Error(AttrGrpLoc, "attribute group has no attributes");
917 /// ParseFnAttributeValuePairs
918 /// ::= <attr> | <attr> '=' <value>
919 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
920 std::vector<unsigned> &FwdRefAttrGrps,
921 bool inAttrGrp, LocTy &BuiltinLoc) {
922 bool HaveError = false;
927 lltok::Kind Token = Lex.getKind();
928 if (Token == lltok::kw_builtin)
929 BuiltinLoc = Lex.getLoc();
932 if (!inAttrGrp) return HaveError;
933 return Error(Lex.getLoc(), "unterminated attribute group");
938 case lltok::AttrGrpID: {
939 // Allow a function to reference an attribute group:
941 // define void @foo() #1 { ... }
945 "cannot have an attribute group reference in an attribute group");
947 unsigned AttrGrpNum = Lex.getUIntVal();
948 if (inAttrGrp) break;
950 // Save the reference to the attribute group. We'll fill it in later.
951 FwdRefAttrGrps.push_back(AttrGrpNum);
954 // Target-dependent attributes:
955 case lltok::StringConstant: {
956 if (ParseStringAttribute(B))
961 // Target-independent attributes:
962 case lltok::kw_align: {
963 // As a hack, we allow function alignment to be initially parsed as an
964 // attribute on a function declaration/definition or added to an attribute
965 // group and later moved to the alignment field.
969 if (ParseToken(lltok::equal, "expected '=' here") ||
970 ParseUInt32(Alignment))
973 if (ParseOptionalAlignment(Alignment))
976 B.addAlignmentAttr(Alignment);
979 case lltok::kw_alignstack: {
983 if (ParseToken(lltok::equal, "expected '=' here") ||
984 ParseUInt32(Alignment))
987 if (ParseOptionalStackAlignment(Alignment))
990 B.addStackAlignmentAttr(Alignment);
993 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
994 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
995 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
996 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
997 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
998 case lltok::kw_inaccessiblememonly:
999 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1000 case lltok::kw_inaccessiblemem_or_argmemonly:
1001 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1002 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1003 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1004 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1005 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1006 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1007 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1008 case lltok::kw_noimplicitfloat:
1009 B.addAttribute(Attribute::NoImplicitFloat); break;
1010 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1011 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1012 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1013 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1014 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1015 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1016 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1017 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1018 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1019 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1020 case lltok::kw_returns_twice:
1021 B.addAttribute(Attribute::ReturnsTwice); break;
1022 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1023 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1024 case lltok::kw_sspstrong:
1025 B.addAttribute(Attribute::StackProtectStrong); break;
1026 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1027 case lltok::kw_sanitize_address:
1028 B.addAttribute(Attribute::SanitizeAddress); break;
1029 case lltok::kw_sanitize_thread:
1030 B.addAttribute(Attribute::SanitizeThread); break;
1031 case lltok::kw_sanitize_memory:
1032 B.addAttribute(Attribute::SanitizeMemory); break;
1033 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1036 case lltok::kw_inreg:
1037 case lltok::kw_signext:
1038 case lltok::kw_zeroext:
1041 "invalid use of attribute on a function");
1043 case lltok::kw_byval:
1044 case lltok::kw_dereferenceable:
1045 case lltok::kw_dereferenceable_or_null:
1046 case lltok::kw_inalloca:
1047 case lltok::kw_nest:
1048 case lltok::kw_noalias:
1049 case lltok::kw_nocapture:
1050 case lltok::kw_nonnull:
1051 case lltok::kw_returned:
1052 case lltok::kw_sret:
1055 "invalid use of parameter-only attribute on a function");
1063 //===----------------------------------------------------------------------===//
1064 // GlobalValue Reference/Resolution Routines.
1065 //===----------------------------------------------------------------------===//
1067 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1068 const std::string &Name) {
1069 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1070 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1072 return new GlobalVariable(*M, PTy->getElementType(), false,
1073 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1074 nullptr, GlobalVariable::NotThreadLocal,
1075 PTy->getAddressSpace());
1078 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1079 /// forward reference record if needed. This can return null if the value
1080 /// exists but does not have the right type.
1081 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1083 PointerType *PTy = dyn_cast<PointerType>(Ty);
1085 Error(Loc, "global variable reference must have pointer type");
1089 // Look this name up in the normal function symbol table.
1091 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1093 // If this is a forward reference for the value, see if we already created a
1094 // forward ref record.
1096 auto I = ForwardRefVals.find(Name);
1097 if (I != ForwardRefVals.end())
1098 Val = I->second.first;
1101 // If we have the value in the symbol table or fwd-ref table, return it.
1103 if (Val->getType() == Ty) return Val;
1104 Error(Loc, "'@" + Name + "' defined with type '" +
1105 getTypeString(Val->getType()) + "'");
1109 // Otherwise, create a new forward reference for this value and remember it.
1110 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1111 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1115 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1116 PointerType *PTy = dyn_cast<PointerType>(Ty);
1118 Error(Loc, "global variable reference must have pointer type");
1122 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1124 // If this is a forward reference for the value, see if we already created a
1125 // forward ref record.
1127 auto I = ForwardRefValIDs.find(ID);
1128 if (I != ForwardRefValIDs.end())
1129 Val = I->second.first;
1132 // If we have the value in the symbol table or fwd-ref table, return it.
1134 if (Val->getType() == Ty) return Val;
1135 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1136 getTypeString(Val->getType()) + "'");
1140 // Otherwise, create a new forward reference for this value and remember it.
1141 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1142 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1147 //===----------------------------------------------------------------------===//
1148 // Comdat Reference/Resolution Routines.
1149 //===----------------------------------------------------------------------===//
1151 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1152 // Look this name up in the comdat symbol table.
1153 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1154 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1155 if (I != ComdatSymTab.end())
1158 // Otherwise, create a new forward reference for this value and remember it.
1159 Comdat *C = M->getOrInsertComdat(Name);
1160 ForwardRefComdats[Name] = Loc;
1165 //===----------------------------------------------------------------------===//
1167 //===----------------------------------------------------------------------===//
1169 /// ParseToken - If the current token has the specified kind, eat it and return
1170 /// success. Otherwise, emit the specified error and return failure.
1171 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1172 if (Lex.getKind() != T)
1173 return TokError(ErrMsg);
1178 /// ParseStringConstant
1179 /// ::= StringConstant
1180 bool LLParser::ParseStringConstant(std::string &Result) {
1181 if (Lex.getKind() != lltok::StringConstant)
1182 return TokError("expected string constant");
1183 Result = Lex.getStrVal();
1190 bool LLParser::ParseUInt32(unsigned &Val) {
1191 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1192 return TokError("expected integer");
1193 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1194 if (Val64 != unsigned(Val64))
1195 return TokError("expected 32-bit integer (too large)");
1203 bool LLParser::ParseUInt64(uint64_t &Val) {
1204 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1205 return TokError("expected integer");
1206 Val = Lex.getAPSIntVal().getLimitedValue();
1212 /// := 'localdynamic'
1213 /// := 'initialexec'
1215 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1216 switch (Lex.getKind()) {
1218 return TokError("expected localdynamic, initialexec or localexec");
1219 case lltok::kw_localdynamic:
1220 TLM = GlobalVariable::LocalDynamicTLSModel;
1222 case lltok::kw_initialexec:
1223 TLM = GlobalVariable::InitialExecTLSModel;
1225 case lltok::kw_localexec:
1226 TLM = GlobalVariable::LocalExecTLSModel;
1234 /// ParseOptionalThreadLocal
1236 /// := 'thread_local'
1237 /// := 'thread_local' '(' tlsmodel ')'
1238 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1239 TLM = GlobalVariable::NotThreadLocal;
1240 if (!EatIfPresent(lltok::kw_thread_local))
1243 TLM = GlobalVariable::GeneralDynamicTLSModel;
1244 if (Lex.getKind() == lltok::lparen) {
1246 return ParseTLSModel(TLM) ||
1247 ParseToken(lltok::rparen, "expected ')' after thread local model");
1252 /// ParseOptionalAddrSpace
1254 /// := 'addrspace' '(' uint32 ')'
1255 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1257 if (!EatIfPresent(lltok::kw_addrspace))
1259 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1260 ParseUInt32(AddrSpace) ||
1261 ParseToken(lltok::rparen, "expected ')' in address space");
1264 /// ParseStringAttribute
1265 /// := StringConstant
1266 /// := StringConstant '=' StringConstant
1267 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1268 std::string Attr = Lex.getStrVal();
1271 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1273 B.addAttribute(Attr, Val);
1277 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1278 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1279 bool HaveError = false;
1284 lltok::Kind Token = Lex.getKind();
1286 default: // End of attributes.
1288 case lltok::StringConstant: {
1289 if (ParseStringAttribute(B))
1293 case lltok::kw_align: {
1295 if (ParseOptionalAlignment(Alignment))
1297 B.addAlignmentAttr(Alignment);
1300 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1301 case lltok::kw_dereferenceable: {
1303 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1305 B.addDereferenceableAttr(Bytes);
1308 case lltok::kw_dereferenceable_or_null: {
1310 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1312 B.addDereferenceableOrNullAttr(Bytes);
1315 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1316 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1317 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1318 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1319 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1320 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1321 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1322 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1323 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1324 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1325 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1326 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1328 case lltok::kw_alignstack:
1329 case lltok::kw_alwaysinline:
1330 case lltok::kw_argmemonly:
1331 case lltok::kw_builtin:
1332 case lltok::kw_inlinehint:
1333 case lltok::kw_jumptable:
1334 case lltok::kw_minsize:
1335 case lltok::kw_naked:
1336 case lltok::kw_nobuiltin:
1337 case lltok::kw_noduplicate:
1338 case lltok::kw_noimplicitfloat:
1339 case lltok::kw_noinline:
1340 case lltok::kw_nonlazybind:
1341 case lltok::kw_noredzone:
1342 case lltok::kw_noreturn:
1343 case lltok::kw_nounwind:
1344 case lltok::kw_optnone:
1345 case lltok::kw_optsize:
1346 case lltok::kw_returns_twice:
1347 case lltok::kw_sanitize_address:
1348 case lltok::kw_sanitize_memory:
1349 case lltok::kw_sanitize_thread:
1351 case lltok::kw_sspreq:
1352 case lltok::kw_sspstrong:
1353 case lltok::kw_safestack:
1354 case lltok::kw_uwtable:
1355 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1363 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1364 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1365 bool HaveError = false;
1370 lltok::Kind Token = Lex.getKind();
1372 default: // End of attributes.
1374 case lltok::StringConstant: {
1375 if (ParseStringAttribute(B))
1379 case lltok::kw_dereferenceable: {
1381 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1383 B.addDereferenceableAttr(Bytes);
1386 case lltok::kw_dereferenceable_or_null: {
1388 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1390 B.addDereferenceableOrNullAttr(Bytes);
1393 case lltok::kw_align: {
1395 if (ParseOptionalAlignment(Alignment))
1397 B.addAlignmentAttr(Alignment);
1400 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1401 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1402 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1403 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1404 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1407 case lltok::kw_byval:
1408 case lltok::kw_inalloca:
1409 case lltok::kw_nest:
1410 case lltok::kw_nocapture:
1411 case lltok::kw_returned:
1412 case lltok::kw_sret:
1413 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1416 case lltok::kw_alignstack:
1417 case lltok::kw_alwaysinline:
1418 case lltok::kw_argmemonly:
1419 case lltok::kw_builtin:
1420 case lltok::kw_cold:
1421 case lltok::kw_inlinehint:
1422 case lltok::kw_jumptable:
1423 case lltok::kw_minsize:
1424 case lltok::kw_naked:
1425 case lltok::kw_nobuiltin:
1426 case lltok::kw_noduplicate:
1427 case lltok::kw_noimplicitfloat:
1428 case lltok::kw_noinline:
1429 case lltok::kw_nonlazybind:
1430 case lltok::kw_noredzone:
1431 case lltok::kw_noreturn:
1432 case lltok::kw_nounwind:
1433 case lltok::kw_optnone:
1434 case lltok::kw_optsize:
1435 case lltok::kw_returns_twice:
1436 case lltok::kw_sanitize_address:
1437 case lltok::kw_sanitize_memory:
1438 case lltok::kw_sanitize_thread:
1440 case lltok::kw_sspreq:
1441 case lltok::kw_sspstrong:
1442 case lltok::kw_safestack:
1443 case lltok::kw_uwtable:
1444 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1447 case lltok::kw_readnone:
1448 case lltok::kw_readonly:
1449 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1456 /// ParseOptionalLinkage
1463 /// ::= 'linkonce_odr'
1464 /// ::= 'available_externally'
1467 /// ::= 'extern_weak'
1469 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1471 switch (Lex.getKind()) {
1472 default: Res=GlobalValue::ExternalLinkage; return false;
1473 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1474 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1475 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1476 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1477 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1478 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1479 case lltok::kw_available_externally:
1480 Res = GlobalValue::AvailableExternallyLinkage;
1482 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1483 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1484 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1485 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1492 /// ParseOptionalVisibility
1498 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1499 switch (Lex.getKind()) {
1500 default: Res = GlobalValue::DefaultVisibility; return false;
1501 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1502 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1503 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1509 /// ParseOptionalDLLStorageClass
1514 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1515 switch (Lex.getKind()) {
1516 default: Res = GlobalValue::DefaultStorageClass; return false;
1517 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1518 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1524 /// ParseOptionalCallingConv
1528 /// ::= 'intel_ocl_bicc'
1530 /// ::= 'x86_stdcallcc'
1531 /// ::= 'x86_fastcallcc'
1532 /// ::= 'x86_thiscallcc'
1533 /// ::= 'x86_vectorcallcc'
1534 /// ::= 'arm_apcscc'
1535 /// ::= 'arm_aapcscc'
1536 /// ::= 'arm_aapcs_vfpcc'
1537 /// ::= 'msp430_intrcc'
1538 /// ::= 'ptx_kernel'
1539 /// ::= 'ptx_device'
1541 /// ::= 'spir_kernel'
1542 /// ::= 'x86_64_sysvcc'
1543 /// ::= 'x86_64_win64cc'
1544 /// ::= 'webkit_jscc'
1546 /// ::= 'preserve_mostcc'
1547 /// ::= 'preserve_allcc'
1551 /// ::= 'cxx_fast_tlscc'
1554 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1555 switch (Lex.getKind()) {
1556 default: CC = CallingConv::C; return false;
1557 case lltok::kw_ccc: CC = CallingConv::C; break;
1558 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1559 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1560 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1561 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1562 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1563 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1564 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1565 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1566 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1567 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1568 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1569 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1570 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1571 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1572 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1573 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1574 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1575 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1576 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1577 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1578 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1579 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1580 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1581 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1582 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1583 case lltok::kw_cc: {
1585 return ParseUInt32(CC);
1593 /// ParseMetadataAttachment
1595 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1596 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1598 std::string Name = Lex.getStrVal();
1599 Kind = M->getMDKindID(Name);
1602 return ParseMDNode(MD);
1605 /// ParseInstructionMetadata
1606 /// ::= !dbg !42 (',' !dbg !57)*
1607 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1609 if (Lex.getKind() != lltok::MetadataVar)
1610 return TokError("expected metadata after comma");
1614 if (ParseMetadataAttachment(MDK, N))
1617 Inst.setMetadata(MDK, N);
1618 if (MDK == LLVMContext::MD_tbaa)
1619 InstsWithTBAATag.push_back(&Inst);
1621 // If this is the end of the list, we're done.
1622 } while (EatIfPresent(lltok::comma));
1626 /// ParseOptionalFunctionMetadata
1628 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1629 while (Lex.getKind() == lltok::MetadataVar) {
1632 if (ParseMetadataAttachment(MDK, N))
1635 F.setMetadata(MDK, N);
1640 /// ParseOptionalAlignment
1643 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1645 if (!EatIfPresent(lltok::kw_align))
1647 LocTy AlignLoc = Lex.getLoc();
1648 if (ParseUInt32(Alignment)) return true;
1649 if (!isPowerOf2_32(Alignment))
1650 return Error(AlignLoc, "alignment is not a power of two");
1651 if (Alignment > Value::MaximumAlignment)
1652 return Error(AlignLoc, "huge alignments are not supported yet");
1656 /// ParseOptionalDerefAttrBytes
1658 /// ::= AttrKind '(' 4 ')'
1660 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1661 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1663 assert((AttrKind == lltok::kw_dereferenceable ||
1664 AttrKind == lltok::kw_dereferenceable_or_null) &&
1668 if (!EatIfPresent(AttrKind))
1670 LocTy ParenLoc = Lex.getLoc();
1671 if (!EatIfPresent(lltok::lparen))
1672 return Error(ParenLoc, "expected '('");
1673 LocTy DerefLoc = Lex.getLoc();
1674 if (ParseUInt64(Bytes)) return true;
1675 ParenLoc = Lex.getLoc();
1676 if (!EatIfPresent(lltok::rparen))
1677 return Error(ParenLoc, "expected ')'");
1679 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1683 /// ParseOptionalCommaAlign
1687 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1689 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1690 bool &AteExtraComma) {
1691 AteExtraComma = false;
1692 while (EatIfPresent(lltok::comma)) {
1693 // Metadata at the end is an early exit.
1694 if (Lex.getKind() == lltok::MetadataVar) {
1695 AteExtraComma = true;
1699 if (Lex.getKind() != lltok::kw_align)
1700 return Error(Lex.getLoc(), "expected metadata or 'align'");
1702 if (ParseOptionalAlignment(Alignment)) return true;
1708 /// ParseScopeAndOrdering
1709 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1712 /// This sets Scope and Ordering to the parsed values.
1713 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1714 AtomicOrdering &Ordering) {
1718 Scope = CrossThread;
1719 if (EatIfPresent(lltok::kw_singlethread))
1720 Scope = SingleThread;
1722 return ParseOrdering(Ordering);
1726 /// ::= AtomicOrdering
1728 /// This sets Ordering to the parsed value.
1729 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1730 switch (Lex.getKind()) {
1731 default: return TokError("Expected ordering on atomic instruction");
1732 case lltok::kw_unordered: Ordering = Unordered; break;
1733 case lltok::kw_monotonic: Ordering = Monotonic; break;
1734 case lltok::kw_acquire: Ordering = Acquire; break;
1735 case lltok::kw_release: Ordering = Release; break;
1736 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1737 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1743 /// ParseOptionalStackAlignment
1745 /// ::= 'alignstack' '(' 4 ')'
1746 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1748 if (!EatIfPresent(lltok::kw_alignstack))
1750 LocTy ParenLoc = Lex.getLoc();
1751 if (!EatIfPresent(lltok::lparen))
1752 return Error(ParenLoc, "expected '('");
1753 LocTy AlignLoc = Lex.getLoc();
1754 if (ParseUInt32(Alignment)) return true;
1755 ParenLoc = Lex.getLoc();
1756 if (!EatIfPresent(lltok::rparen))
1757 return Error(ParenLoc, "expected ')'");
1758 if (!isPowerOf2_32(Alignment))
1759 return Error(AlignLoc, "stack alignment is not a power of two");
1763 /// ParseIndexList - This parses the index list for an insert/extractvalue
1764 /// instruction. This sets AteExtraComma in the case where we eat an extra
1765 /// comma at the end of the line and find that it is followed by metadata.
1766 /// Clients that don't allow metadata can call the version of this function that
1767 /// only takes one argument.
1770 /// ::= (',' uint32)+
1772 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1773 bool &AteExtraComma) {
1774 AteExtraComma = false;
1776 if (Lex.getKind() != lltok::comma)
1777 return TokError("expected ',' as start of index list");
1779 while (EatIfPresent(lltok::comma)) {
1780 if (Lex.getKind() == lltok::MetadataVar) {
1781 if (Indices.empty()) return TokError("expected index");
1782 AteExtraComma = true;
1786 if (ParseUInt32(Idx)) return true;
1787 Indices.push_back(Idx);
1793 //===----------------------------------------------------------------------===//
1795 //===----------------------------------------------------------------------===//
1797 /// ParseType - Parse a type.
1798 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1799 SMLoc TypeLoc = Lex.getLoc();
1800 switch (Lex.getKind()) {
1802 return TokError(Msg);
1804 // Type ::= 'float' | 'void' (etc)
1805 Result = Lex.getTyVal();
1809 // Type ::= StructType
1810 if (ParseAnonStructType(Result, false))
1813 case lltok::lsquare:
1814 // Type ::= '[' ... ']'
1815 Lex.Lex(); // eat the lsquare.
1816 if (ParseArrayVectorType(Result, false))
1819 case lltok::less: // Either vector or packed struct.
1820 // Type ::= '<' ... '>'
1822 if (Lex.getKind() == lltok::lbrace) {
1823 if (ParseAnonStructType(Result, true) ||
1824 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1826 } else if (ParseArrayVectorType(Result, true))
1829 case lltok::LocalVar: {
1831 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1833 // If the type hasn't been defined yet, create a forward definition and
1834 // remember where that forward def'n was seen (in case it never is defined).
1836 Entry.first = StructType::create(Context, Lex.getStrVal());
1837 Entry.second = Lex.getLoc();
1839 Result = Entry.first;
1844 case lltok::LocalVarID: {
1846 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1848 // If the type hasn't been defined yet, create a forward definition and
1849 // remember where that forward def'n was seen (in case it never is defined).
1851 Entry.first = StructType::create(Context);
1852 Entry.second = Lex.getLoc();
1854 Result = Entry.first;
1860 // Parse the type suffixes.
1862 switch (Lex.getKind()) {
1865 if (!AllowVoid && Result->isVoidTy())
1866 return Error(TypeLoc, "void type only allowed for function results");
1869 // Type ::= Type '*'
1871 if (Result->isLabelTy())
1872 return TokError("basic block pointers are invalid");
1873 if (Result->isVoidTy())
1874 return TokError("pointers to void are invalid - use i8* instead");
1875 if (!PointerType::isValidElementType(Result))
1876 return TokError("pointer to this type is invalid");
1877 Result = PointerType::getUnqual(Result);
1881 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1882 case lltok::kw_addrspace: {
1883 if (Result->isLabelTy())
1884 return TokError("basic block pointers are invalid");
1885 if (Result->isVoidTy())
1886 return TokError("pointers to void are invalid; use i8* instead");
1887 if (!PointerType::isValidElementType(Result))
1888 return TokError("pointer to this type is invalid");
1890 if (ParseOptionalAddrSpace(AddrSpace) ||
1891 ParseToken(lltok::star, "expected '*' in address space"))
1894 Result = PointerType::get(Result, AddrSpace);
1898 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1900 if (ParseFunctionType(Result))
1907 /// ParseParameterList
1909 /// ::= '(' Arg (',' Arg)* ')'
1911 /// ::= Type OptionalAttributes Value OptionalAttributes
1912 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1913 PerFunctionState &PFS, bool IsMustTailCall,
1914 bool InVarArgsFunc) {
1915 if (ParseToken(lltok::lparen, "expected '(' in call"))
1918 unsigned AttrIndex = 1;
1919 while (Lex.getKind() != lltok::rparen) {
1920 // If this isn't the first argument, we need a comma.
1921 if (!ArgList.empty() &&
1922 ParseToken(lltok::comma, "expected ',' in argument list"))
1925 // Parse an ellipsis if this is a musttail call in a variadic function.
1926 if (Lex.getKind() == lltok::dotdotdot) {
1927 const char *Msg = "unexpected ellipsis in argument list for ";
1928 if (!IsMustTailCall)
1929 return TokError(Twine(Msg) + "non-musttail call");
1931 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1932 Lex.Lex(); // Lex the '...', it is purely for readability.
1933 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1936 // Parse the argument.
1938 Type *ArgTy = nullptr;
1939 AttrBuilder ArgAttrs;
1941 if (ParseType(ArgTy, ArgLoc))
1944 if (ArgTy->isMetadataTy()) {
1945 if (ParseMetadataAsValue(V, PFS))
1948 // Otherwise, handle normal operands.
1949 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1952 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1957 if (IsMustTailCall && InVarArgsFunc)
1958 return TokError("expected '...' at end of argument list for musttail call "
1959 "in varargs function");
1961 Lex.Lex(); // Lex the ')'.
1965 /// ParseOptionalOperandBundles
1967 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
1970 /// ::= bundle-tag '(' ')'
1971 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
1973 /// bundle-tag ::= String Constant
1974 bool LLParser::ParseOptionalOperandBundles(
1975 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
1976 LocTy BeginLoc = Lex.getLoc();
1977 if (!EatIfPresent(lltok::lsquare))
1980 while (Lex.getKind() != lltok::rsquare) {
1981 // If this isn't the first operand bundle, we need a comma.
1982 if (!BundleList.empty() &&
1983 ParseToken(lltok::comma, "expected ',' in input list"))
1987 if (ParseStringConstant(Tag))
1990 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1993 std::vector<Value *> Inputs;
1994 while (Lex.getKind() != lltok::rparen) {
1995 // If this isn't the first input, we need a comma.
1996 if (!Inputs.empty() &&
1997 ParseToken(lltok::comma, "expected ',' in input list"))
2001 Value *Input = nullptr;
2002 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2004 Inputs.push_back(Input);
2007 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2009 Lex.Lex(); // Lex the ')'.
2012 if (BundleList.empty())
2013 return Error(BeginLoc, "operand bundle set must not be empty");
2015 Lex.Lex(); // Lex the ']'.
2019 /// ParseArgumentList - Parse the argument list for a function type or function
2021 /// ::= '(' ArgTypeListI ')'
2025 /// ::= ArgTypeList ',' '...'
2026 /// ::= ArgType (',' ArgType)*
2028 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2031 assert(Lex.getKind() == lltok::lparen);
2032 Lex.Lex(); // eat the (.
2034 if (Lex.getKind() == lltok::rparen) {
2036 } else if (Lex.getKind() == lltok::dotdotdot) {
2040 LocTy TypeLoc = Lex.getLoc();
2041 Type *ArgTy = nullptr;
2045 if (ParseType(ArgTy) ||
2046 ParseOptionalParamAttrs(Attrs)) return true;
2048 if (ArgTy->isVoidTy())
2049 return Error(TypeLoc, "argument can not have void type");
2051 if (Lex.getKind() == lltok::LocalVar) {
2052 Name = Lex.getStrVal();
2056 if (!FunctionType::isValidArgumentType(ArgTy))
2057 return Error(TypeLoc, "invalid type for function argument");
2059 unsigned AttrIndex = 1;
2060 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2061 AttrIndex++, Attrs),
2064 while (EatIfPresent(lltok::comma)) {
2065 // Handle ... at end of arg list.
2066 if (EatIfPresent(lltok::dotdotdot)) {
2071 // Otherwise must be an argument type.
2072 TypeLoc = Lex.getLoc();
2073 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2075 if (ArgTy->isVoidTy())
2076 return Error(TypeLoc, "argument can not have void type");
2078 if (Lex.getKind() == lltok::LocalVar) {
2079 Name = Lex.getStrVal();
2085 if (!ArgTy->isFirstClassType())
2086 return Error(TypeLoc, "invalid type for function argument");
2088 ArgList.emplace_back(
2090 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2095 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2098 /// ParseFunctionType
2099 /// ::= Type ArgumentList OptionalAttrs
2100 bool LLParser::ParseFunctionType(Type *&Result) {
2101 assert(Lex.getKind() == lltok::lparen);
2103 if (!FunctionType::isValidReturnType(Result))
2104 return TokError("invalid function return type");
2106 SmallVector<ArgInfo, 8> ArgList;
2108 if (ParseArgumentList(ArgList, isVarArg))
2111 // Reject names on the arguments lists.
2112 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2113 if (!ArgList[i].Name.empty())
2114 return Error(ArgList[i].Loc, "argument name invalid in function type");
2115 if (ArgList[i].Attrs.hasAttributes(i + 1))
2116 return Error(ArgList[i].Loc,
2117 "argument attributes invalid in function type");
2120 SmallVector<Type*, 16> ArgListTy;
2121 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2122 ArgListTy.push_back(ArgList[i].Ty);
2124 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2128 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2130 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2131 SmallVector<Type*, 8> Elts;
2132 if (ParseStructBody(Elts)) return true;
2134 Result = StructType::get(Context, Elts, Packed);
2138 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2139 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2140 std::pair<Type*, LocTy> &Entry,
2142 // If the type was already defined, diagnose the redefinition.
2143 if (Entry.first && !Entry.second.isValid())
2144 return Error(TypeLoc, "redefinition of type");
2146 // If we have opaque, just return without filling in the definition for the
2147 // struct. This counts as a definition as far as the .ll file goes.
2148 if (EatIfPresent(lltok::kw_opaque)) {
2149 // This type is being defined, so clear the location to indicate this.
2150 Entry.second = SMLoc();
2152 // If this type number has never been uttered, create it.
2154 Entry.first = StructType::create(Context, Name);
2155 ResultTy = Entry.first;
2159 // If the type starts with '<', then it is either a packed struct or a vector.
2160 bool isPacked = EatIfPresent(lltok::less);
2162 // If we don't have a struct, then we have a random type alias, which we
2163 // accept for compatibility with old files. These types are not allowed to be
2164 // forward referenced and not allowed to be recursive.
2165 if (Lex.getKind() != lltok::lbrace) {
2167 return Error(TypeLoc, "forward references to non-struct type");
2171 return ParseArrayVectorType(ResultTy, true);
2172 return ParseType(ResultTy);
2175 // This type is being defined, so clear the location to indicate this.
2176 Entry.second = SMLoc();
2178 // If this type number has never been uttered, create it.
2180 Entry.first = StructType::create(Context, Name);
2182 StructType *STy = cast<StructType>(Entry.first);
2184 SmallVector<Type*, 8> Body;
2185 if (ParseStructBody(Body) ||
2186 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2189 STy->setBody(Body, isPacked);
2195 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2198 /// ::= '{' Type (',' Type)* '}'
2199 /// ::= '<' '{' '}' '>'
2200 /// ::= '<' '{' Type (',' Type)* '}' '>'
2201 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2202 assert(Lex.getKind() == lltok::lbrace);
2203 Lex.Lex(); // Consume the '{'
2205 // Handle the empty struct.
2206 if (EatIfPresent(lltok::rbrace))
2209 LocTy EltTyLoc = Lex.getLoc();
2211 if (ParseType(Ty)) return true;
2214 if (!StructType::isValidElementType(Ty))
2215 return Error(EltTyLoc, "invalid element type for struct");
2217 while (EatIfPresent(lltok::comma)) {
2218 EltTyLoc = Lex.getLoc();
2219 if (ParseType(Ty)) return true;
2221 if (!StructType::isValidElementType(Ty))
2222 return Error(EltTyLoc, "invalid element type for struct");
2227 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2230 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2231 /// token has already been consumed.
2233 /// ::= '[' APSINTVAL 'x' Types ']'
2234 /// ::= '<' APSINTVAL 'x' Types '>'
2235 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2236 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2237 Lex.getAPSIntVal().getBitWidth() > 64)
2238 return TokError("expected number in address space");
2240 LocTy SizeLoc = Lex.getLoc();
2241 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2244 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2247 LocTy TypeLoc = Lex.getLoc();
2248 Type *EltTy = nullptr;
2249 if (ParseType(EltTy)) return true;
2251 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2252 "expected end of sequential type"))
2257 return Error(SizeLoc, "zero element vector is illegal");
2258 if ((unsigned)Size != Size)
2259 return Error(SizeLoc, "size too large for vector");
2260 if (!VectorType::isValidElementType(EltTy))
2261 return Error(TypeLoc, "invalid vector element type");
2262 Result = VectorType::get(EltTy, unsigned(Size));
2264 if (!ArrayType::isValidElementType(EltTy))
2265 return Error(TypeLoc, "invalid array element type");
2266 Result = ArrayType::get(EltTy, Size);
2271 //===----------------------------------------------------------------------===//
2272 // Function Semantic Analysis.
2273 //===----------------------------------------------------------------------===//
2275 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2277 : P(p), F(f), FunctionNumber(functionNumber) {
2279 // Insert unnamed arguments into the NumberedVals list.
2280 for (Argument &A : F.args())
2282 NumberedVals.push_back(&A);
2285 LLParser::PerFunctionState::~PerFunctionState() {
2286 // If there were any forward referenced non-basicblock values, delete them.
2288 for (const auto &P : ForwardRefVals) {
2289 if (isa<BasicBlock>(P.second.first))
2291 P.second.first->replaceAllUsesWith(
2292 UndefValue::get(P.second.first->getType()));
2293 delete P.second.first;
2296 for (const auto &P : ForwardRefValIDs) {
2297 if (isa<BasicBlock>(P.second.first))
2299 P.second.first->replaceAllUsesWith(
2300 UndefValue::get(P.second.first->getType()));
2301 delete P.second.first;
2305 bool LLParser::PerFunctionState::FinishFunction() {
2306 if (!ForwardRefVals.empty())
2307 return P.Error(ForwardRefVals.begin()->second.second,
2308 "use of undefined value '%" + ForwardRefVals.begin()->first +
2310 if (!ForwardRefValIDs.empty())
2311 return P.Error(ForwardRefValIDs.begin()->second.second,
2312 "use of undefined value '%" +
2313 Twine(ForwardRefValIDs.begin()->first) + "'");
2318 /// GetVal - Get a value with the specified name or ID, creating a
2319 /// forward reference record if needed. This can return null if the value
2320 /// exists but does not have the right type.
2321 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2323 // Look this name up in the normal function symbol table.
2324 Value *Val = F.getValueSymbolTable().lookup(Name);
2326 // If this is a forward reference for the value, see if we already created a
2327 // forward ref record.
2329 auto I = ForwardRefVals.find(Name);
2330 if (I != ForwardRefVals.end())
2331 Val = I->second.first;
2334 // If we have the value in the symbol table or fwd-ref table, return it.
2336 if (Val->getType() == Ty) return Val;
2337 if (Ty->isLabelTy())
2338 P.Error(Loc, "'%" + Name + "' is not a basic block");
2340 P.Error(Loc, "'%" + Name + "' defined with type '" +
2341 getTypeString(Val->getType()) + "'");
2345 // Don't make placeholders with invalid type.
2346 if (!Ty->isFirstClassType()) {
2347 P.Error(Loc, "invalid use of a non-first-class type");
2351 // Otherwise, create a new forward reference for this value and remember it.
2353 if (Ty->isLabelTy()) {
2354 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2356 FwdVal = new Argument(Ty, Name);
2359 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2363 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2364 // Look this name up in the normal function symbol table.
2365 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2367 // If this is a forward reference for the value, see if we already created a
2368 // forward ref record.
2370 auto I = ForwardRefValIDs.find(ID);
2371 if (I != ForwardRefValIDs.end())
2372 Val = I->second.first;
2375 // If we have the value in the symbol table or fwd-ref table, return it.
2377 if (Val->getType() == Ty) return Val;
2378 if (Ty->isLabelTy())
2379 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2381 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2382 getTypeString(Val->getType()) + "'");
2386 if (!Ty->isFirstClassType()) {
2387 P.Error(Loc, "invalid use of a non-first-class type");
2391 // Otherwise, create a new forward reference for this value and remember it.
2393 if (Ty->isLabelTy()) {
2394 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2396 FwdVal = new Argument(Ty);
2399 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2403 /// SetInstName - After an instruction is parsed and inserted into its
2404 /// basic block, this installs its name.
2405 bool LLParser::PerFunctionState::SetInstName(int NameID,
2406 const std::string &NameStr,
2407 LocTy NameLoc, Instruction *Inst) {
2408 // If this instruction has void type, it cannot have a name or ID specified.
2409 if (Inst->getType()->isVoidTy()) {
2410 if (NameID != -1 || !NameStr.empty())
2411 return P.Error(NameLoc, "instructions returning void cannot have a name");
2415 // If this was a numbered instruction, verify that the instruction is the
2416 // expected value and resolve any forward references.
2417 if (NameStr.empty()) {
2418 // If neither a name nor an ID was specified, just use the next ID.
2420 NameID = NumberedVals.size();
2422 if (unsigned(NameID) != NumberedVals.size())
2423 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2424 Twine(NumberedVals.size()) + "'");
2426 auto FI = ForwardRefValIDs.find(NameID);
2427 if (FI != ForwardRefValIDs.end()) {
2428 Value *Sentinel = FI->second.first;
2429 if (Sentinel->getType() != Inst->getType())
2430 return P.Error(NameLoc, "instruction forward referenced with type '" +
2431 getTypeString(FI->second.first->getType()) + "'");
2433 Sentinel->replaceAllUsesWith(Inst);
2435 ForwardRefValIDs.erase(FI);
2438 NumberedVals.push_back(Inst);
2442 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2443 auto FI = ForwardRefVals.find(NameStr);
2444 if (FI != ForwardRefVals.end()) {
2445 Value *Sentinel = FI->second.first;
2446 if (Sentinel->getType() != Inst->getType())
2447 return P.Error(NameLoc, "instruction forward referenced with type '" +
2448 getTypeString(FI->second.first->getType()) + "'");
2450 Sentinel->replaceAllUsesWith(Inst);
2452 ForwardRefVals.erase(FI);
2455 // Set the name on the instruction.
2456 Inst->setName(NameStr);
2458 if (Inst->getName() != NameStr)
2459 return P.Error(NameLoc, "multiple definition of local value named '" +
2464 /// GetBB - Get a basic block with the specified name or ID, creating a
2465 /// forward reference record if needed.
2466 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2468 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2469 Type::getLabelTy(F.getContext()), Loc));
2472 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2473 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2474 Type::getLabelTy(F.getContext()), Loc));
2477 /// DefineBB - Define the specified basic block, which is either named or
2478 /// unnamed. If there is an error, this returns null otherwise it returns
2479 /// the block being defined.
2480 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2484 BB = GetBB(NumberedVals.size(), Loc);
2486 BB = GetBB(Name, Loc);
2487 if (!BB) return nullptr; // Already diagnosed error.
2489 // Move the block to the end of the function. Forward ref'd blocks are
2490 // inserted wherever they happen to be referenced.
2491 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2493 // Remove the block from forward ref sets.
2495 ForwardRefValIDs.erase(NumberedVals.size());
2496 NumberedVals.push_back(BB);
2498 // BB forward references are already in the function symbol table.
2499 ForwardRefVals.erase(Name);
2505 //===----------------------------------------------------------------------===//
2507 //===----------------------------------------------------------------------===//
2509 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2510 /// type implied. For example, if we parse "4" we don't know what integer type
2511 /// it has. The value will later be combined with its type and checked for
2512 /// sanity. PFS is used to convert function-local operands of metadata (since
2513 /// metadata operands are not just parsed here but also converted to values).
2514 /// PFS can be null when we are not parsing metadata values inside a function.
2515 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2516 ID.Loc = Lex.getLoc();
2517 switch (Lex.getKind()) {
2518 default: return TokError("expected value token");
2519 case lltok::GlobalID: // @42
2520 ID.UIntVal = Lex.getUIntVal();
2521 ID.Kind = ValID::t_GlobalID;
2523 case lltok::GlobalVar: // @foo
2524 ID.StrVal = Lex.getStrVal();
2525 ID.Kind = ValID::t_GlobalName;
2527 case lltok::LocalVarID: // %42
2528 ID.UIntVal = Lex.getUIntVal();
2529 ID.Kind = ValID::t_LocalID;
2531 case lltok::LocalVar: // %foo
2532 ID.StrVal = Lex.getStrVal();
2533 ID.Kind = ValID::t_LocalName;
2536 ID.APSIntVal = Lex.getAPSIntVal();
2537 ID.Kind = ValID::t_APSInt;
2539 case lltok::APFloat:
2540 ID.APFloatVal = Lex.getAPFloatVal();
2541 ID.Kind = ValID::t_APFloat;
2543 case lltok::kw_true:
2544 ID.ConstantVal = ConstantInt::getTrue(Context);
2545 ID.Kind = ValID::t_Constant;
2547 case lltok::kw_false:
2548 ID.ConstantVal = ConstantInt::getFalse(Context);
2549 ID.Kind = ValID::t_Constant;
2551 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2552 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2553 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2554 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2556 case lltok::lbrace: {
2557 // ValID ::= '{' ConstVector '}'
2559 SmallVector<Constant*, 16> Elts;
2560 if (ParseGlobalValueVector(Elts) ||
2561 ParseToken(lltok::rbrace, "expected end of struct constant"))
2564 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2565 ID.UIntVal = Elts.size();
2566 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2567 Elts.size() * sizeof(Elts[0]));
2568 ID.Kind = ValID::t_ConstantStruct;
2572 // ValID ::= '<' ConstVector '>' --> Vector.
2573 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2575 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2577 SmallVector<Constant*, 16> Elts;
2578 LocTy FirstEltLoc = Lex.getLoc();
2579 if (ParseGlobalValueVector(Elts) ||
2581 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2582 ParseToken(lltok::greater, "expected end of constant"))
2585 if (isPackedStruct) {
2586 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2587 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2588 Elts.size() * sizeof(Elts[0]));
2589 ID.UIntVal = Elts.size();
2590 ID.Kind = ValID::t_PackedConstantStruct;
2595 return Error(ID.Loc, "constant vector must not be empty");
2597 if (!Elts[0]->getType()->isIntegerTy() &&
2598 !Elts[0]->getType()->isFloatingPointTy() &&
2599 !Elts[0]->getType()->isPointerTy())
2600 return Error(FirstEltLoc,
2601 "vector elements must have integer, pointer or floating point type");
2603 // Verify that all the vector elements have the same type.
2604 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2605 if (Elts[i]->getType() != Elts[0]->getType())
2606 return Error(FirstEltLoc,
2607 "vector element #" + Twine(i) +
2608 " is not of type '" + getTypeString(Elts[0]->getType()));
2610 ID.ConstantVal = ConstantVector::get(Elts);
2611 ID.Kind = ValID::t_Constant;
2614 case lltok::lsquare: { // Array Constant
2616 SmallVector<Constant*, 16> Elts;
2617 LocTy FirstEltLoc = Lex.getLoc();
2618 if (ParseGlobalValueVector(Elts) ||
2619 ParseToken(lltok::rsquare, "expected end of array constant"))
2622 // Handle empty element.
2624 // Use undef instead of an array because it's inconvenient to determine
2625 // the element type at this point, there being no elements to examine.
2626 ID.Kind = ValID::t_EmptyArray;
2630 if (!Elts[0]->getType()->isFirstClassType())
2631 return Error(FirstEltLoc, "invalid array element type: " +
2632 getTypeString(Elts[0]->getType()));
2634 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2636 // Verify all elements are correct type!
2637 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2638 if (Elts[i]->getType() != Elts[0]->getType())
2639 return Error(FirstEltLoc,
2640 "array element #" + Twine(i) +
2641 " is not of type '" + getTypeString(Elts[0]->getType()));
2644 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2645 ID.Kind = ValID::t_Constant;
2648 case lltok::kw_c: // c "foo"
2650 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2652 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2653 ID.Kind = ValID::t_Constant;
2656 case lltok::kw_asm: {
2657 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2659 bool HasSideEffect, AlignStack, AsmDialect;
2661 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2662 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2663 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2664 ParseStringConstant(ID.StrVal) ||
2665 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2666 ParseToken(lltok::StringConstant, "expected constraint string"))
2668 ID.StrVal2 = Lex.getStrVal();
2669 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2670 (unsigned(AsmDialect)<<2);
2671 ID.Kind = ValID::t_InlineAsm;
2675 case lltok::kw_blockaddress: {
2676 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2681 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2683 ParseToken(lltok::comma, "expected comma in block address expression")||
2684 ParseValID(Label) ||
2685 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2688 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2689 return Error(Fn.Loc, "expected function name in blockaddress");
2690 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2691 return Error(Label.Loc, "expected basic block name in blockaddress");
2693 // Try to find the function (but skip it if it's forward-referenced).
2694 GlobalValue *GV = nullptr;
2695 if (Fn.Kind == ValID::t_GlobalID) {
2696 if (Fn.UIntVal < NumberedVals.size())
2697 GV = NumberedVals[Fn.UIntVal];
2698 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2699 GV = M->getNamedValue(Fn.StrVal);
2701 Function *F = nullptr;
2703 // Confirm that it's actually a function with a definition.
2704 if (!isa<Function>(GV))
2705 return Error(Fn.Loc, "expected function name in blockaddress");
2706 F = cast<Function>(GV);
2707 if (F->isDeclaration())
2708 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2712 // Make a global variable as a placeholder for this reference.
2713 GlobalValue *&FwdRef =
2714 ForwardRefBlockAddresses.insert(std::make_pair(
2716 std::map<ValID, GlobalValue *>()))
2717 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2720 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2721 GlobalValue::InternalLinkage, nullptr, "");
2722 ID.ConstantVal = FwdRef;
2723 ID.Kind = ValID::t_Constant;
2727 // We found the function; now find the basic block. Don't use PFS, since we
2728 // might be inside a constant expression.
2730 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2731 if (Label.Kind == ValID::t_LocalID)
2732 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2734 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2736 return Error(Label.Loc, "referenced value is not a basic block");
2738 if (Label.Kind == ValID::t_LocalID)
2739 return Error(Label.Loc, "cannot take address of numeric label after "
2740 "the function is defined");
2741 BB = dyn_cast_or_null<BasicBlock>(
2742 F->getValueSymbolTable().lookup(Label.StrVal));
2744 return Error(Label.Loc, "referenced value is not a basic block");
2747 ID.ConstantVal = BlockAddress::get(F, BB);
2748 ID.Kind = ValID::t_Constant;
2752 case lltok::kw_trunc:
2753 case lltok::kw_zext:
2754 case lltok::kw_sext:
2755 case lltok::kw_fptrunc:
2756 case lltok::kw_fpext:
2757 case lltok::kw_bitcast:
2758 case lltok::kw_addrspacecast:
2759 case lltok::kw_uitofp:
2760 case lltok::kw_sitofp:
2761 case lltok::kw_fptoui:
2762 case lltok::kw_fptosi:
2763 case lltok::kw_inttoptr:
2764 case lltok::kw_ptrtoint: {
2765 unsigned Opc = Lex.getUIntVal();
2766 Type *DestTy = nullptr;
2769 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2770 ParseGlobalTypeAndValue(SrcVal) ||
2771 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2772 ParseType(DestTy) ||
2773 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2775 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2776 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2777 getTypeString(SrcVal->getType()) + "' to '" +
2778 getTypeString(DestTy) + "'");
2779 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2781 ID.Kind = ValID::t_Constant;
2784 case lltok::kw_extractvalue: {
2787 SmallVector<unsigned, 4> Indices;
2788 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2789 ParseGlobalTypeAndValue(Val) ||
2790 ParseIndexList(Indices) ||
2791 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2794 if (!Val->getType()->isAggregateType())
2795 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2796 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2797 return Error(ID.Loc, "invalid indices for extractvalue");
2798 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2799 ID.Kind = ValID::t_Constant;
2802 case lltok::kw_insertvalue: {
2804 Constant *Val0, *Val1;
2805 SmallVector<unsigned, 4> Indices;
2806 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2807 ParseGlobalTypeAndValue(Val0) ||
2808 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2809 ParseGlobalTypeAndValue(Val1) ||
2810 ParseIndexList(Indices) ||
2811 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2813 if (!Val0->getType()->isAggregateType())
2814 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2816 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2818 return Error(ID.Loc, "invalid indices for insertvalue");
2819 if (IndexedType != Val1->getType())
2820 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2821 getTypeString(Val1->getType()) +
2822 "' instead of '" + getTypeString(IndexedType) +
2824 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2825 ID.Kind = ValID::t_Constant;
2828 case lltok::kw_icmp:
2829 case lltok::kw_fcmp: {
2830 unsigned PredVal, Opc = Lex.getUIntVal();
2831 Constant *Val0, *Val1;
2833 if (ParseCmpPredicate(PredVal, Opc) ||
2834 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2835 ParseGlobalTypeAndValue(Val0) ||
2836 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2837 ParseGlobalTypeAndValue(Val1) ||
2838 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2841 if (Val0->getType() != Val1->getType())
2842 return Error(ID.Loc, "compare operands must have the same type");
2844 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2846 if (Opc == Instruction::FCmp) {
2847 if (!Val0->getType()->isFPOrFPVectorTy())
2848 return Error(ID.Loc, "fcmp requires floating point operands");
2849 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2851 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2852 if (!Val0->getType()->isIntOrIntVectorTy() &&
2853 !Val0->getType()->getScalarType()->isPointerTy())
2854 return Error(ID.Loc, "icmp requires pointer or integer operands");
2855 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2857 ID.Kind = ValID::t_Constant;
2861 // Binary Operators.
2863 case lltok::kw_fadd:
2865 case lltok::kw_fsub:
2867 case lltok::kw_fmul:
2868 case lltok::kw_udiv:
2869 case lltok::kw_sdiv:
2870 case lltok::kw_fdiv:
2871 case lltok::kw_urem:
2872 case lltok::kw_srem:
2873 case lltok::kw_frem:
2875 case lltok::kw_lshr:
2876 case lltok::kw_ashr: {
2880 unsigned Opc = Lex.getUIntVal();
2881 Constant *Val0, *Val1;
2883 LocTy ModifierLoc = Lex.getLoc();
2884 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2885 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2886 if (EatIfPresent(lltok::kw_nuw))
2888 if (EatIfPresent(lltok::kw_nsw)) {
2890 if (EatIfPresent(lltok::kw_nuw))
2893 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2894 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2895 if (EatIfPresent(lltok::kw_exact))
2898 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2899 ParseGlobalTypeAndValue(Val0) ||
2900 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2901 ParseGlobalTypeAndValue(Val1) ||
2902 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2904 if (Val0->getType() != Val1->getType())
2905 return Error(ID.Loc, "operands of constexpr must have same type");
2906 if (!Val0->getType()->isIntOrIntVectorTy()) {
2908 return Error(ModifierLoc, "nuw only applies to integer operations");
2910 return Error(ModifierLoc, "nsw only applies to integer operations");
2912 // Check that the type is valid for the operator.
2914 case Instruction::Add:
2915 case Instruction::Sub:
2916 case Instruction::Mul:
2917 case Instruction::UDiv:
2918 case Instruction::SDiv:
2919 case Instruction::URem:
2920 case Instruction::SRem:
2921 case Instruction::Shl:
2922 case Instruction::AShr:
2923 case Instruction::LShr:
2924 if (!Val0->getType()->isIntOrIntVectorTy())
2925 return Error(ID.Loc, "constexpr requires integer operands");
2927 case Instruction::FAdd:
2928 case Instruction::FSub:
2929 case Instruction::FMul:
2930 case Instruction::FDiv:
2931 case Instruction::FRem:
2932 if (!Val0->getType()->isFPOrFPVectorTy())
2933 return Error(ID.Loc, "constexpr requires fp operands");
2935 default: llvm_unreachable("Unknown binary operator!");
2938 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2939 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2940 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2941 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2943 ID.Kind = ValID::t_Constant;
2947 // Logical Operations
2950 case lltok::kw_xor: {
2951 unsigned Opc = Lex.getUIntVal();
2952 Constant *Val0, *Val1;
2954 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2955 ParseGlobalTypeAndValue(Val0) ||
2956 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2957 ParseGlobalTypeAndValue(Val1) ||
2958 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2960 if (Val0->getType() != Val1->getType())
2961 return Error(ID.Loc, "operands of constexpr must have same type");
2962 if (!Val0->getType()->isIntOrIntVectorTy())
2963 return Error(ID.Loc,
2964 "constexpr requires integer or integer vector operands");
2965 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2966 ID.Kind = ValID::t_Constant;
2970 case lltok::kw_getelementptr:
2971 case lltok::kw_shufflevector:
2972 case lltok::kw_insertelement:
2973 case lltok::kw_extractelement:
2974 case lltok::kw_select: {
2975 unsigned Opc = Lex.getUIntVal();
2976 SmallVector<Constant*, 16> Elts;
2977 bool InBounds = false;
2981 if (Opc == Instruction::GetElementPtr)
2982 InBounds = EatIfPresent(lltok::kw_inbounds);
2984 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2987 LocTy ExplicitTypeLoc = Lex.getLoc();
2988 if (Opc == Instruction::GetElementPtr) {
2989 if (ParseType(Ty) ||
2990 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2994 if (ParseGlobalValueVector(Elts) ||
2995 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2998 if (Opc == Instruction::GetElementPtr) {
2999 if (Elts.size() == 0 ||
3000 !Elts[0]->getType()->getScalarType()->isPointerTy())
3001 return Error(ID.Loc, "base of getelementptr must be a pointer");
3003 Type *BaseType = Elts[0]->getType();
3004 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3005 if (Ty != BasePointerType->getElementType())
3008 "explicit pointee type doesn't match operand's pointee type");
3010 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3011 for (Constant *Val : Indices) {
3012 Type *ValTy = Val->getType();
3013 if (!ValTy->getScalarType()->isIntegerTy())
3014 return Error(ID.Loc, "getelementptr index must be an integer");
3015 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3016 return Error(ID.Loc, "getelementptr index type missmatch");
3017 if (ValTy->isVectorTy()) {
3018 unsigned ValNumEl = ValTy->getVectorNumElements();
3019 unsigned PtrNumEl = BaseType->getVectorNumElements();
3020 if (ValNumEl != PtrNumEl)
3023 "getelementptr vector index has a wrong number of elements");
3027 SmallPtrSet<Type*, 4> Visited;
3028 if (!Indices.empty() && !Ty->isSized(&Visited))
3029 return Error(ID.Loc, "base element of getelementptr must be sized");
3031 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3032 return Error(ID.Loc, "invalid getelementptr indices");
3034 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3035 } else if (Opc == Instruction::Select) {
3036 if (Elts.size() != 3)
3037 return Error(ID.Loc, "expected three operands to select");
3038 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3040 return Error(ID.Loc, Reason);
3041 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3042 } else if (Opc == Instruction::ShuffleVector) {
3043 if (Elts.size() != 3)
3044 return Error(ID.Loc, "expected three operands to shufflevector");
3045 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3046 return Error(ID.Loc, "invalid operands to shufflevector");
3048 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3049 } else if (Opc == Instruction::ExtractElement) {
3050 if (Elts.size() != 2)
3051 return Error(ID.Loc, "expected two operands to extractelement");
3052 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3053 return Error(ID.Loc, "invalid extractelement operands");
3054 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3056 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3057 if (Elts.size() != 3)
3058 return Error(ID.Loc, "expected three operands to insertelement");
3059 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3060 return Error(ID.Loc, "invalid insertelement operands");
3062 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3065 ID.Kind = ValID::t_Constant;
3074 /// ParseGlobalValue - Parse a global value with the specified type.
3075 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3079 bool Parsed = ParseValID(ID) ||
3080 ConvertValIDToValue(Ty, ID, V, nullptr);
3081 if (V && !(C = dyn_cast<Constant>(V)))
3082 return Error(ID.Loc, "global values must be constants");
3086 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3088 return ParseType(Ty) ||
3089 ParseGlobalValue(Ty, V);
3092 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3095 LocTy KwLoc = Lex.getLoc();
3096 if (!EatIfPresent(lltok::kw_comdat))
3099 if (EatIfPresent(lltok::lparen)) {
3100 if (Lex.getKind() != lltok::ComdatVar)
3101 return TokError("expected comdat variable");
3102 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3104 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3107 if (GlobalName.empty())
3108 return TokError("comdat cannot be unnamed");
3109 C = getComdat(GlobalName, KwLoc);
3115 /// ParseGlobalValueVector
3117 /// ::= TypeAndValue (',' TypeAndValue)*
3118 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3120 if (Lex.getKind() == lltok::rbrace ||
3121 Lex.getKind() == lltok::rsquare ||
3122 Lex.getKind() == lltok::greater ||
3123 Lex.getKind() == lltok::rparen)
3127 if (ParseGlobalTypeAndValue(C)) return true;
3130 while (EatIfPresent(lltok::comma)) {
3131 if (ParseGlobalTypeAndValue(C)) return true;
3138 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3139 SmallVector<Metadata *, 16> Elts;
3140 if (ParseMDNodeVector(Elts))
3143 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3150 /// ::= !DILocation(...)
3151 bool LLParser::ParseMDNode(MDNode *&N) {
3152 if (Lex.getKind() == lltok::MetadataVar)
3153 return ParseSpecializedMDNode(N);
3155 return ParseToken(lltok::exclaim, "expected '!' here") ||
3159 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3161 if (Lex.getKind() == lltok::lbrace)
3162 return ParseMDTuple(N);
3165 return ParseMDNodeID(N);
3170 /// Structure to represent an optional metadata field.
3171 template <class FieldTy> struct MDFieldImpl {
3172 typedef MDFieldImpl ImplTy;
3176 void assign(FieldTy Val) {
3178 this->Val = std::move(Val);
3181 explicit MDFieldImpl(FieldTy Default)
3182 : Val(std::move(Default)), Seen(false) {}
3185 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3188 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3189 : ImplTy(Default), Max(Max) {}
3191 struct LineField : public MDUnsignedField {
3192 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3194 struct ColumnField : public MDUnsignedField {
3195 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3197 struct DwarfTagField : public MDUnsignedField {
3198 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3199 DwarfTagField(dwarf::Tag DefaultTag)
3200 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3202 struct DwarfMacinfoTypeField : public MDUnsignedField {
3203 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3204 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3205 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3207 struct DwarfAttEncodingField : public MDUnsignedField {
3208 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3210 struct DwarfVirtualityField : public MDUnsignedField {
3211 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3213 struct DwarfLangField : public MDUnsignedField {
3214 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3217 struct DIFlagField : public MDUnsignedField {
3218 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3221 struct MDSignedField : public MDFieldImpl<int64_t> {
3225 MDSignedField(int64_t Default = 0)
3226 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3227 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3228 : ImplTy(Default), Min(Min), Max(Max) {}
3231 struct MDBoolField : public MDFieldImpl<bool> {
3232 MDBoolField(bool Default = false) : ImplTy(Default) {}
3234 struct MDField : public MDFieldImpl<Metadata *> {
3237 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3239 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3240 MDConstant() : ImplTy(nullptr) {}
3242 struct MDStringField : public MDFieldImpl<MDString *> {
3244 MDStringField(bool AllowEmpty = true)
3245 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3247 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3248 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3256 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3257 MDUnsignedField &Result) {
3258 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3259 return TokError("expected unsigned integer");
3261 auto &U = Lex.getAPSIntVal();
3262 if (U.ugt(Result.Max))
3263 return TokError("value for '" + Name + "' too large, limit is " +
3265 Result.assign(U.getZExtValue());
3266 assert(Result.Val <= Result.Max && "Expected value in range");
3272 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3273 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3276 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3277 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3281 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3282 if (Lex.getKind() == lltok::APSInt)
3283 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3285 if (Lex.getKind() != lltok::DwarfTag)
3286 return TokError("expected DWARF tag");
3288 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3289 if (Tag == dwarf::DW_TAG_invalid)
3290 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3291 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3299 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3300 DwarfMacinfoTypeField &Result) {
3301 if (Lex.getKind() == lltok::APSInt)
3302 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3304 if (Lex.getKind() != lltok::DwarfMacinfo)
3305 return TokError("expected DWARF macinfo type");
3307 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3308 if (Macinfo == dwarf::DW_MACINFO_invalid)
3310 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3311 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type");
3313 Result.assign(Macinfo);
3319 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3320 DwarfVirtualityField &Result) {
3321 if (Lex.getKind() == lltok::APSInt)
3322 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3324 if (Lex.getKind() != lltok::DwarfVirtuality)
3325 return TokError("expected DWARF virtuality code");
3327 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3329 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3330 Lex.getStrVal() + "'");
3331 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3332 Result.assign(Virtuality);
3338 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3339 if (Lex.getKind() == lltok::APSInt)
3340 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3342 if (Lex.getKind() != lltok::DwarfLang)
3343 return TokError("expected DWARF language");
3345 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3347 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3349 assert(Lang <= Result.Max && "Expected valid DWARF language");
3350 Result.assign(Lang);
3356 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3357 DwarfAttEncodingField &Result) {
3358 if (Lex.getKind() == lltok::APSInt)
3359 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3361 if (Lex.getKind() != lltok::DwarfAttEncoding)
3362 return TokError("expected DWARF type attribute encoding");
3364 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3366 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3367 Lex.getStrVal() + "'");
3368 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3369 Result.assign(Encoding);
3376 /// ::= DIFlagVector
3377 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3379 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3380 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3382 // Parser for a single flag.
3383 auto parseFlag = [&](unsigned &Val) {
3384 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3385 return ParseUInt32(Val);
3387 if (Lex.getKind() != lltok::DIFlag)
3388 return TokError("expected debug info flag");
3390 Val = DINode::getFlag(Lex.getStrVal());
3392 return TokError(Twine("invalid debug info flag flag '") +
3393 Lex.getStrVal() + "'");
3398 // Parse the flags and combine them together.
3399 unsigned Combined = 0;
3405 } while (EatIfPresent(lltok::bar));
3407 Result.assign(Combined);
3412 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3413 MDSignedField &Result) {
3414 if (Lex.getKind() != lltok::APSInt)
3415 return TokError("expected signed integer");
3417 auto &S = Lex.getAPSIntVal();
3419 return TokError("value for '" + Name + "' too small, limit is " +
3422 return TokError("value for '" + Name + "' too large, limit is " +
3424 Result.assign(S.getExtValue());
3425 assert(Result.Val >= Result.Min && "Expected value in range");
3426 assert(Result.Val <= Result.Max && "Expected value in range");
3432 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3433 switch (Lex.getKind()) {
3435 return TokError("expected 'true' or 'false'");
3436 case lltok::kw_true:
3437 Result.assign(true);
3439 case lltok::kw_false:
3440 Result.assign(false);
3448 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3449 if (Lex.getKind() == lltok::kw_null) {
3450 if (!Result.AllowNull)
3451 return TokError("'" + Name + "' cannot be null");
3453 Result.assign(nullptr);
3458 if (ParseMetadata(MD, nullptr))
3466 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3468 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3471 Result.assign(cast<ConstantAsMetadata>(MD));
3476 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3477 LocTy ValueLoc = Lex.getLoc();
3479 if (ParseStringConstant(S))
3482 if (!Result.AllowEmpty && S.empty())
3483 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3485 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3490 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3491 SmallVector<Metadata *, 4> MDs;
3492 if (ParseMDNodeVector(MDs))
3495 Result.assign(std::move(MDs));
3499 } // end namespace llvm
3501 template <class ParserTy>
3502 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3504 if (Lex.getKind() != lltok::LabelStr)
3505 return TokError("expected field label here");
3509 } while (EatIfPresent(lltok::comma));
3514 template <class ParserTy>
3515 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3516 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3519 if (ParseToken(lltok::lparen, "expected '(' here"))
3521 if (Lex.getKind() != lltok::rparen)
3522 if (ParseMDFieldsImplBody(parseField))
3525 ClosingLoc = Lex.getLoc();
3526 return ParseToken(lltok::rparen, "expected ')' here");
3529 template <class FieldTy>
3530 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3532 return TokError("field '" + Name + "' cannot be specified more than once");
3534 LocTy Loc = Lex.getLoc();
3536 return ParseMDField(Loc, Name, Result);
3539 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3540 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3542 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3543 if (Lex.getStrVal() == #CLASS) \
3544 return Parse##CLASS(N, IsDistinct);
3545 #include "llvm/IR/Metadata.def"
3547 return TokError("expected metadata type");
3550 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3551 #define NOP_FIELD(NAME, TYPE, INIT)
3552 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3554 return Error(ClosingLoc, "missing required field '" #NAME "'");
3555 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3556 if (Lex.getStrVal() == #NAME) \
3557 return ParseMDField(#NAME, NAME);
3558 #define PARSE_MD_FIELDS() \
3559 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3562 if (ParseMDFieldsImpl([&]() -> bool { \
3563 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3564 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3567 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3569 #define GET_OR_DISTINCT(CLASS, ARGS) \
3570 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3572 /// ParseDILocationFields:
3573 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3574 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3575 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3576 OPTIONAL(line, LineField, ); \
3577 OPTIONAL(column, ColumnField, ); \
3578 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3579 OPTIONAL(inlinedAt, MDField, );
3581 #undef VISIT_MD_FIELDS
3583 Result = GET_OR_DISTINCT(
3584 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3588 /// ParseGenericDINode:
3589 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3590 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3591 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3592 REQUIRED(tag, DwarfTagField, ); \
3593 OPTIONAL(header, MDStringField, ); \
3594 OPTIONAL(operands, MDFieldList, );
3596 #undef VISIT_MD_FIELDS
3598 Result = GET_OR_DISTINCT(GenericDINode,
3599 (Context, tag.Val, header.Val, operands.Val));
3603 /// ParseDISubrange:
3604 /// ::= !DISubrange(count: 30, lowerBound: 2)
3605 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3606 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3607 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3608 OPTIONAL(lowerBound, MDSignedField, );
3610 #undef VISIT_MD_FIELDS
3612 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3616 /// ParseDIEnumerator:
3617 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3618 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3619 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3620 REQUIRED(name, MDStringField, ); \
3621 REQUIRED(value, MDSignedField, );
3623 #undef VISIT_MD_FIELDS
3625 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3629 /// ParseDIBasicType:
3630 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3631 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3632 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3633 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3634 OPTIONAL(name, MDStringField, ); \
3635 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3636 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3637 OPTIONAL(encoding, DwarfAttEncodingField, );
3639 #undef VISIT_MD_FIELDS
3641 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3642 align.Val, encoding.Val));
3646 /// ParseDIDerivedType:
3647 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3648 /// line: 7, scope: !1, baseType: !2, size: 32,
3649 /// align: 32, offset: 0, flags: 0, extraData: !3)
3650 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3651 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3652 REQUIRED(tag, DwarfTagField, ); \
3653 OPTIONAL(name, MDStringField, ); \
3654 OPTIONAL(file, MDField, ); \
3655 OPTIONAL(line, LineField, ); \
3656 OPTIONAL(scope, MDField, ); \
3657 REQUIRED(baseType, MDField, ); \
3658 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3659 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3660 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3661 OPTIONAL(flags, DIFlagField, ); \
3662 OPTIONAL(extraData, MDField, );
3664 #undef VISIT_MD_FIELDS
3666 Result = GET_OR_DISTINCT(DIDerivedType,
3667 (Context, tag.Val, name.Val, file.Val, line.Val,
3668 scope.Val, baseType.Val, size.Val, align.Val,
3669 offset.Val, flags.Val, extraData.Val));
3673 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3674 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3675 REQUIRED(tag, DwarfTagField, ); \
3676 OPTIONAL(name, MDStringField, ); \
3677 OPTIONAL(file, MDField, ); \
3678 OPTIONAL(line, LineField, ); \
3679 OPTIONAL(scope, MDField, ); \
3680 OPTIONAL(baseType, MDField, ); \
3681 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3682 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3683 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3684 OPTIONAL(flags, DIFlagField, ); \
3685 OPTIONAL(elements, MDField, ); \
3686 OPTIONAL(runtimeLang, DwarfLangField, ); \
3687 OPTIONAL(vtableHolder, MDField, ); \
3688 OPTIONAL(templateParams, MDField, ); \
3689 OPTIONAL(identifier, MDStringField, );
3691 #undef VISIT_MD_FIELDS
3693 Result = GET_OR_DISTINCT(
3695 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3696 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3697 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3701 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3702 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3703 OPTIONAL(flags, DIFlagField, ); \
3704 REQUIRED(types, MDField, );
3706 #undef VISIT_MD_FIELDS
3708 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3712 /// ParseDIFileType:
3713 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3714 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3715 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3716 REQUIRED(filename, MDStringField, ); \
3717 REQUIRED(directory, MDStringField, );
3719 #undef VISIT_MD_FIELDS
3721 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3725 /// ParseDICompileUnit:
3726 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3727 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3728 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3729 /// enums: !1, retainedTypes: !2, subprograms: !3,
3730 /// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
3731 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3733 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3735 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3736 REQUIRED(language, DwarfLangField, ); \
3737 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3738 OPTIONAL(producer, MDStringField, ); \
3739 OPTIONAL(isOptimized, MDBoolField, ); \
3740 OPTIONAL(flags, MDStringField, ); \
3741 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3742 OPTIONAL(splitDebugFilename, MDStringField, ); \
3743 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3744 OPTIONAL(enums, MDField, ); \
3745 OPTIONAL(retainedTypes, MDField, ); \
3746 OPTIONAL(subprograms, MDField, ); \
3747 OPTIONAL(globals, MDField, ); \
3748 OPTIONAL(imports, MDField, ); \
3749 OPTIONAL(macros, MDField, ); \
3750 OPTIONAL(dwoId, MDUnsignedField, );
3752 #undef VISIT_MD_FIELDS
3754 Result = DICompileUnit::getDistinct(
3755 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3756 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3757 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, macros.Val,
3762 /// ParseDISubprogram:
3763 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3764 /// file: !1, line: 7, type: !2, isLocal: false,
3765 /// isDefinition: true, scopeLine: 8, containingType: !3,
3766 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3767 /// virtualIndex: 10, flags: 11,
3768 /// isOptimized: false, templateParams: !4, declaration: !5,
3770 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3771 auto Loc = Lex.getLoc();
3772 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3773 OPTIONAL(scope, MDField, ); \
3774 OPTIONAL(name, MDStringField, ); \
3775 OPTIONAL(linkageName, MDStringField, ); \
3776 OPTIONAL(file, MDField, ); \
3777 OPTIONAL(line, LineField, ); \
3778 OPTIONAL(type, MDField, ); \
3779 OPTIONAL(isLocal, MDBoolField, ); \
3780 OPTIONAL(isDefinition, MDBoolField, (true)); \
3781 OPTIONAL(scopeLine, LineField, ); \
3782 OPTIONAL(containingType, MDField, ); \
3783 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3784 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3785 OPTIONAL(flags, DIFlagField, ); \
3786 OPTIONAL(isOptimized, MDBoolField, ); \
3787 OPTIONAL(templateParams, MDField, ); \
3788 OPTIONAL(declaration, MDField, ); \
3789 OPTIONAL(variables, MDField, );
3791 #undef VISIT_MD_FIELDS
3793 if (isDefinition.Val && !IsDistinct)
3796 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3798 Result = GET_OR_DISTINCT(
3800 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3801 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3802 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3803 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3807 /// ParseDILexicalBlock:
3808 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3809 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3810 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3811 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3812 OPTIONAL(file, MDField, ); \
3813 OPTIONAL(line, LineField, ); \
3814 OPTIONAL(column, ColumnField, );
3816 #undef VISIT_MD_FIELDS
3818 Result = GET_OR_DISTINCT(
3819 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3823 /// ParseDILexicalBlockFile:
3824 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3825 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3826 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3827 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3828 OPTIONAL(file, MDField, ); \
3829 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3831 #undef VISIT_MD_FIELDS
3833 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3834 (Context, scope.Val, file.Val, discriminator.Val));
3838 /// ParseDINamespace:
3839 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3840 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3841 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3842 REQUIRED(scope, MDField, ); \
3843 OPTIONAL(file, MDField, ); \
3844 OPTIONAL(name, MDStringField, ); \
3845 OPTIONAL(line, LineField, );
3847 #undef VISIT_MD_FIELDS
3849 Result = GET_OR_DISTINCT(DINamespace,
3850 (Context, scope.Val, file.Val, name.Val, line.Val));
3855 /// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
3856 bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
3857 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3858 REQUIRED(type, DwarfMacinfoTypeField, ); \
3859 REQUIRED(line, LineField, ); \
3860 REQUIRED(name, MDStringField, ); \
3861 OPTIONAL(value, MDStringField, );
3863 #undef VISIT_MD_FIELDS
3865 Result = GET_OR_DISTINCT(DIMacro,
3866 (Context, type.Val, line.Val, name.Val, value.Val));
3870 /// ParseDIMacroFile:
3871 /// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
3872 bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
3873 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3874 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
3875 REQUIRED(line, LineField, ); \
3876 REQUIRED(file, MDField, ); \
3877 OPTIONAL(nodes, MDField, );
3879 #undef VISIT_MD_FIELDS
3881 Result = GET_OR_DISTINCT(DIMacroFile,
3882 (Context, type.Val, line.Val, file.Val, nodes.Val));
3888 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3889 /// includePath: "/usr/include", isysroot: "/")
3890 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3891 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3892 REQUIRED(scope, MDField, ); \
3893 REQUIRED(name, MDStringField, ); \
3894 OPTIONAL(configMacros, MDStringField, ); \
3895 OPTIONAL(includePath, MDStringField, ); \
3896 OPTIONAL(isysroot, MDStringField, );
3898 #undef VISIT_MD_FIELDS
3900 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3901 configMacros.Val, includePath.Val, isysroot.Val));
3905 /// ParseDITemplateTypeParameter:
3906 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3907 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3908 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3909 OPTIONAL(name, MDStringField, ); \
3910 REQUIRED(type, MDField, );
3912 #undef VISIT_MD_FIELDS
3915 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3919 /// ParseDITemplateValueParameter:
3920 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3921 /// name: "V", type: !1, value: i32 7)
3922 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3923 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3924 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3925 OPTIONAL(name, MDStringField, ); \
3926 OPTIONAL(type, MDField, ); \
3927 REQUIRED(value, MDField, );
3929 #undef VISIT_MD_FIELDS
3931 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3932 (Context, tag.Val, name.Val, type.Val, value.Val));
3936 /// ParseDIGlobalVariable:
3937 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3938 /// file: !1, line: 7, type: !2, isLocal: false,
3939 /// isDefinition: true, variable: i32* @foo,
3940 /// declaration: !3)
3941 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3942 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3943 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3944 OPTIONAL(scope, MDField, ); \
3945 OPTIONAL(linkageName, MDStringField, ); \
3946 OPTIONAL(file, MDField, ); \
3947 OPTIONAL(line, LineField, ); \
3948 OPTIONAL(type, MDField, ); \
3949 OPTIONAL(isLocal, MDBoolField, ); \
3950 OPTIONAL(isDefinition, MDBoolField, (true)); \
3951 OPTIONAL(variable, MDConstant, ); \
3952 OPTIONAL(declaration, MDField, );
3954 #undef VISIT_MD_FIELDS
3956 Result = GET_OR_DISTINCT(DIGlobalVariable,
3957 (Context, scope.Val, name.Val, linkageName.Val,
3958 file.Val, line.Val, type.Val, isLocal.Val,
3959 isDefinition.Val, variable.Val, declaration.Val));
3963 /// ParseDILocalVariable:
3964 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3965 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3966 /// ::= !DILocalVariable(scope: !0, name: "foo",
3967 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3968 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3969 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3970 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3971 OPTIONAL(name, MDStringField, ); \
3972 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3973 OPTIONAL(file, MDField, ); \
3974 OPTIONAL(line, LineField, ); \
3975 OPTIONAL(type, MDField, ); \
3976 OPTIONAL(flags, DIFlagField, );
3978 #undef VISIT_MD_FIELDS
3980 Result = GET_OR_DISTINCT(DILocalVariable,
3981 (Context, scope.Val, name.Val, file.Val, line.Val,
3982 type.Val, arg.Val, flags.Val));
3986 /// ParseDIExpression:
3987 /// ::= !DIExpression(0, 7, -1)
3988 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3989 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3992 if (ParseToken(lltok::lparen, "expected '(' here"))
3995 SmallVector<uint64_t, 8> Elements;
3996 if (Lex.getKind() != lltok::rparen)
3998 if (Lex.getKind() == lltok::DwarfOp) {
3999 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4001 Elements.push_back(Op);
4004 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4007 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4008 return TokError("expected unsigned integer");
4010 auto &U = Lex.getAPSIntVal();
4011 if (U.ugt(UINT64_MAX))
4012 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4013 Elements.push_back(U.getZExtValue());
4015 } while (EatIfPresent(lltok::comma));
4017 if (ParseToken(lltok::rparen, "expected ')' here"))
4020 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4024 /// ParseDIObjCProperty:
4025 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4026 /// getter: "getFoo", attributes: 7, type: !2)
4027 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4028 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4029 OPTIONAL(name, MDStringField, ); \
4030 OPTIONAL(file, MDField, ); \
4031 OPTIONAL(line, LineField, ); \
4032 OPTIONAL(setter, MDStringField, ); \
4033 OPTIONAL(getter, MDStringField, ); \
4034 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4035 OPTIONAL(type, MDField, );
4037 #undef VISIT_MD_FIELDS
4039 Result = GET_OR_DISTINCT(DIObjCProperty,
4040 (Context, name.Val, file.Val, line.Val, setter.Val,
4041 getter.Val, attributes.Val, type.Val));
4045 /// ParseDIImportedEntity:
4046 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4047 /// line: 7, name: "foo")
4048 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4049 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4050 REQUIRED(tag, DwarfTagField, ); \
4051 REQUIRED(scope, MDField, ); \
4052 OPTIONAL(entity, MDField, ); \
4053 OPTIONAL(line, LineField, ); \
4054 OPTIONAL(name, MDStringField, );
4056 #undef VISIT_MD_FIELDS
4058 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4059 entity.Val, line.Val, name.Val));
4063 #undef PARSE_MD_FIELD
4065 #undef REQUIRE_FIELD
4066 #undef DECLARE_FIELD
4068 /// ParseMetadataAsValue
4069 /// ::= metadata i32 %local
4070 /// ::= metadata i32 @global
4071 /// ::= metadata i32 7
4073 /// ::= metadata !{...}
4074 /// ::= metadata !"string"
4075 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4076 // Note: the type 'metadata' has already been parsed.
4078 if (ParseMetadata(MD, &PFS))
4081 V = MetadataAsValue::get(Context, MD);
4085 /// ParseValueAsMetadata
4089 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4090 PerFunctionState *PFS) {
4093 if (ParseType(Ty, TypeMsg, Loc))
4095 if (Ty->isMetadataTy())
4096 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4099 if (ParseValue(Ty, V, PFS))
4102 MD = ValueAsMetadata::get(V);
4113 /// ::= !DILocation(...)
4114 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4115 if (Lex.getKind() == lltok::MetadataVar) {
4117 if (ParseSpecializedMDNode(N))
4125 if (Lex.getKind() != lltok::exclaim)
4126 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4129 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4133 // ::= '!' STRINGCONSTANT
4134 if (Lex.getKind() == lltok::StringConstant) {
4136 if (ParseMDString(S))
4146 if (ParseMDNodeTail(N))
4153 //===----------------------------------------------------------------------===//
4154 // Function Parsing.
4155 //===----------------------------------------------------------------------===//
4157 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4158 PerFunctionState *PFS) {
4159 if (Ty->isFunctionTy())
4160 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4163 case ValID::t_LocalID:
4164 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4165 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4166 return V == nullptr;
4167 case ValID::t_LocalName:
4168 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4169 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4170 return V == nullptr;
4171 case ValID::t_InlineAsm: {
4172 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4173 return Error(ID.Loc, "invalid type for inline asm constraint string");
4174 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4175 (ID.UIntVal >> 1) & 1,
4176 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4179 case ValID::t_GlobalName:
4180 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4181 return V == nullptr;
4182 case ValID::t_GlobalID:
4183 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4184 return V == nullptr;
4185 case ValID::t_APSInt:
4186 if (!Ty->isIntegerTy())
4187 return Error(ID.Loc, "integer constant must have integer type");
4188 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4189 V = ConstantInt::get(Context, ID.APSIntVal);
4191 case ValID::t_APFloat:
4192 if (!Ty->isFloatingPointTy() ||
4193 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4194 return Error(ID.Loc, "floating point constant invalid for type");
4196 // The lexer has no type info, so builds all half, float, and double FP
4197 // constants as double. Fix this here. Long double does not need this.
4198 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4201 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4203 else if (Ty->isFloatTy())
4204 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4207 V = ConstantFP::get(Context, ID.APFloatVal);
4209 if (V->getType() != Ty)
4210 return Error(ID.Loc, "floating point constant does not have type '" +
4211 getTypeString(Ty) + "'");
4215 if (!Ty->isPointerTy())
4216 return Error(ID.Loc, "null must be a pointer type");
4217 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4219 case ValID::t_Undef:
4220 // FIXME: LabelTy should not be a first-class type.
4221 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4222 return Error(ID.Loc, "invalid type for undef constant");
4223 V = UndefValue::get(Ty);
4225 case ValID::t_EmptyArray:
4226 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4227 return Error(ID.Loc, "invalid empty array initializer");
4228 V = UndefValue::get(Ty);
4231 // FIXME: LabelTy should not be a first-class type.
4232 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4233 return Error(ID.Loc, "invalid type for null constant");
4234 V = Constant::getNullValue(Ty);
4237 if (!Ty->isTokenTy())
4238 return Error(ID.Loc, "invalid type for none constant");
4239 V = Constant::getNullValue(Ty);
4241 case ValID::t_Constant:
4242 if (ID.ConstantVal->getType() != Ty)
4243 return Error(ID.Loc, "constant expression type mismatch");
4247 case ValID::t_ConstantStruct:
4248 case ValID::t_PackedConstantStruct:
4249 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4250 if (ST->getNumElements() != ID.UIntVal)
4251 return Error(ID.Loc,
4252 "initializer with struct type has wrong # elements");
4253 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4254 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4256 // Verify that the elements are compatible with the structtype.
4257 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4258 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4259 return Error(ID.Loc, "element " + Twine(i) +
4260 " of struct initializer doesn't match struct element type");
4262 V = ConstantStruct::get(
4263 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4265 return Error(ID.Loc, "constant expression type mismatch");
4268 llvm_unreachable("Invalid ValID");
4271 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4274 auto Loc = Lex.getLoc();
4275 if (ParseValID(ID, /*PFS=*/nullptr))
4278 case ValID::t_APSInt:
4279 case ValID::t_APFloat:
4280 case ValID::t_Undef:
4281 case ValID::t_Constant:
4282 case ValID::t_ConstantStruct:
4283 case ValID::t_PackedConstantStruct: {
4285 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4287 assert(isa<Constant>(V) && "Expected a constant value");
4288 C = cast<Constant>(V);
4292 return Error(Loc, "expected a constant value");
4296 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4299 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4302 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4304 return ParseType(Ty) ||
4305 ParseValue(Ty, V, PFS);
4308 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4309 PerFunctionState &PFS) {
4312 if (ParseTypeAndValue(V, PFS)) return true;
4313 if (!isa<BasicBlock>(V))
4314 return Error(Loc, "expected a basic block");
4315 BB = cast<BasicBlock>(V);
4321 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4322 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4323 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4324 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4325 // Parse the linkage.
4326 LocTy LinkageLoc = Lex.getLoc();
4329 unsigned Visibility;
4330 unsigned DLLStorageClass;
4331 AttrBuilder RetAttrs;
4333 Type *RetType = nullptr;
4334 LocTy RetTypeLoc = Lex.getLoc();
4335 if (ParseOptionalLinkage(Linkage) ||
4336 ParseOptionalVisibility(Visibility) ||
4337 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4338 ParseOptionalCallingConv(CC) ||
4339 ParseOptionalReturnAttrs(RetAttrs) ||
4340 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4343 // Verify that the linkage is ok.
4344 switch ((GlobalValue::LinkageTypes)Linkage) {
4345 case GlobalValue::ExternalLinkage:
4346 break; // always ok.
4347 case GlobalValue::ExternalWeakLinkage:
4349 return Error(LinkageLoc, "invalid linkage for function definition");
4351 case GlobalValue::PrivateLinkage:
4352 case GlobalValue::InternalLinkage:
4353 case GlobalValue::AvailableExternallyLinkage:
4354 case GlobalValue::LinkOnceAnyLinkage:
4355 case GlobalValue::LinkOnceODRLinkage:
4356 case GlobalValue::WeakAnyLinkage:
4357 case GlobalValue::WeakODRLinkage:
4359 return Error(LinkageLoc, "invalid linkage for function declaration");
4361 case GlobalValue::AppendingLinkage:
4362 case GlobalValue::CommonLinkage:
4363 return Error(LinkageLoc, "invalid function linkage type");
4366 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4367 return Error(LinkageLoc,
4368 "symbol with local linkage must have default visibility");
4370 if (!FunctionType::isValidReturnType(RetType))
4371 return Error(RetTypeLoc, "invalid function return type");
4373 LocTy NameLoc = Lex.getLoc();
4375 std::string FunctionName;
4376 if (Lex.getKind() == lltok::GlobalVar) {
4377 FunctionName = Lex.getStrVal();
4378 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4379 unsigned NameID = Lex.getUIntVal();
4381 if (NameID != NumberedVals.size())
4382 return TokError("function expected to be numbered '%" +
4383 Twine(NumberedVals.size()) + "'");
4385 return TokError("expected function name");
4390 if (Lex.getKind() != lltok::lparen)
4391 return TokError("expected '(' in function argument list");
4393 SmallVector<ArgInfo, 8> ArgList;
4395 AttrBuilder FuncAttrs;
4396 std::vector<unsigned> FwdRefAttrGrps;
4398 std::string Section;
4402 LocTy UnnamedAddrLoc;
4403 Constant *Prefix = nullptr;
4404 Constant *Prologue = nullptr;
4405 Constant *PersonalityFn = nullptr;
4408 if (ParseArgumentList(ArgList, isVarArg) ||
4409 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4411 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4413 (EatIfPresent(lltok::kw_section) &&
4414 ParseStringConstant(Section)) ||
4415 parseOptionalComdat(FunctionName, C) ||
4416 ParseOptionalAlignment(Alignment) ||
4417 (EatIfPresent(lltok::kw_gc) &&
4418 ParseStringConstant(GC)) ||
4419 (EatIfPresent(lltok::kw_prefix) &&
4420 ParseGlobalTypeAndValue(Prefix)) ||
4421 (EatIfPresent(lltok::kw_prologue) &&
4422 ParseGlobalTypeAndValue(Prologue)) ||
4423 (EatIfPresent(lltok::kw_personality) &&
4424 ParseGlobalTypeAndValue(PersonalityFn)))
4427 if (FuncAttrs.contains(Attribute::Builtin))
4428 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4430 // If the alignment was parsed as an attribute, move to the alignment field.
4431 if (FuncAttrs.hasAlignmentAttr()) {
4432 Alignment = FuncAttrs.getAlignment();
4433 FuncAttrs.removeAttribute(Attribute::Alignment);
4436 // Okay, if we got here, the function is syntactically valid. Convert types
4437 // and do semantic checks.
4438 std::vector<Type*> ParamTypeList;
4439 SmallVector<AttributeSet, 8> Attrs;
4441 if (RetAttrs.hasAttributes())
4442 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4443 AttributeSet::ReturnIndex,
4446 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4447 ParamTypeList.push_back(ArgList[i].Ty);
4448 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4449 AttrBuilder B(ArgList[i].Attrs, i + 1);
4450 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4454 if (FuncAttrs.hasAttributes())
4455 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4456 AttributeSet::FunctionIndex,
4459 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4461 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4462 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4465 FunctionType::get(RetType, ParamTypeList, isVarArg);
4466 PointerType *PFT = PointerType::getUnqual(FT);
4469 if (!FunctionName.empty()) {
4470 // If this was a definition of a forward reference, remove the definition
4471 // from the forward reference table and fill in the forward ref.
4472 auto FRVI = ForwardRefVals.find(FunctionName);
4473 if (FRVI != ForwardRefVals.end()) {
4474 Fn = M->getFunction(FunctionName);
4476 return Error(FRVI->second.second, "invalid forward reference to "
4477 "function as global value!");
4478 if (Fn->getType() != PFT)
4479 return Error(FRVI->second.second, "invalid forward reference to "
4480 "function '" + FunctionName + "' with wrong type!");
4482 ForwardRefVals.erase(FRVI);
4483 } else if ((Fn = M->getFunction(FunctionName))) {
4484 // Reject redefinitions.
4485 return Error(NameLoc, "invalid redefinition of function '" +
4486 FunctionName + "'");
4487 } else if (M->getNamedValue(FunctionName)) {
4488 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4492 // If this is a definition of a forward referenced function, make sure the
4494 auto I = ForwardRefValIDs.find(NumberedVals.size());
4495 if (I != ForwardRefValIDs.end()) {
4496 Fn = cast<Function>(I->second.first);
4497 if (Fn->getType() != PFT)
4498 return Error(NameLoc, "type of definition and forward reference of '@" +
4499 Twine(NumberedVals.size()) + "' disagree");
4500 ForwardRefValIDs.erase(I);
4505 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4506 else // Move the forward-reference to the correct spot in the module.
4507 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4509 if (FunctionName.empty())
4510 NumberedVals.push_back(Fn);
4512 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4513 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4514 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4515 Fn->setCallingConv(CC);
4516 Fn->setAttributes(PAL);
4517 Fn->setUnnamedAddr(UnnamedAddr);
4518 Fn->setAlignment(Alignment);
4519 Fn->setSection(Section);
4521 Fn->setPersonalityFn(PersonalityFn);
4522 if (!GC.empty()) Fn->setGC(GC.c_str());
4523 Fn->setPrefixData(Prefix);
4524 Fn->setPrologueData(Prologue);
4525 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4527 // Add all of the arguments we parsed to the function.
4528 Function::arg_iterator ArgIt = Fn->arg_begin();
4529 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4530 // If the argument has a name, insert it into the argument symbol table.
4531 if (ArgList[i].Name.empty()) continue;
4533 // Set the name, if it conflicted, it will be auto-renamed.
4534 ArgIt->setName(ArgList[i].Name);
4536 if (ArgIt->getName() != ArgList[i].Name)
4537 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4538 ArgList[i].Name + "'");
4544 // Check the declaration has no block address forward references.
4546 if (FunctionName.empty()) {
4547 ID.Kind = ValID::t_GlobalID;
4548 ID.UIntVal = NumberedVals.size() - 1;
4550 ID.Kind = ValID::t_GlobalName;
4551 ID.StrVal = FunctionName;
4553 auto Blocks = ForwardRefBlockAddresses.find(ID);
4554 if (Blocks != ForwardRefBlockAddresses.end())
4555 return Error(Blocks->first.Loc,
4556 "cannot take blockaddress inside a declaration");
4560 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4562 if (FunctionNumber == -1) {
4563 ID.Kind = ValID::t_GlobalName;
4564 ID.StrVal = F.getName();
4566 ID.Kind = ValID::t_GlobalID;
4567 ID.UIntVal = FunctionNumber;
4570 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4571 if (Blocks == P.ForwardRefBlockAddresses.end())
4574 for (const auto &I : Blocks->second) {
4575 const ValID &BBID = I.first;
4576 GlobalValue *GV = I.second;
4578 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4579 "Expected local id or name");
4581 if (BBID.Kind == ValID::t_LocalName)
4582 BB = GetBB(BBID.StrVal, BBID.Loc);
4584 BB = GetBB(BBID.UIntVal, BBID.Loc);
4586 return P.Error(BBID.Loc, "referenced value is not a basic block");
4588 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4589 GV->eraseFromParent();
4592 P.ForwardRefBlockAddresses.erase(Blocks);
4596 /// ParseFunctionBody
4597 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4598 bool LLParser::ParseFunctionBody(Function &Fn) {
4599 if (Lex.getKind() != lltok::lbrace)
4600 return TokError("expected '{' in function body");
4601 Lex.Lex(); // eat the {.
4603 int FunctionNumber = -1;
4604 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4606 PerFunctionState PFS(*this, Fn, FunctionNumber);
4608 // Resolve block addresses and allow basic blocks to be forward-declared
4609 // within this function.
4610 if (PFS.resolveForwardRefBlockAddresses())
4612 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4614 // We need at least one basic block.
4615 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4616 return TokError("function body requires at least one basic block");
4618 while (Lex.getKind() != lltok::rbrace &&
4619 Lex.getKind() != lltok::kw_uselistorder)
4620 if (ParseBasicBlock(PFS)) return true;
4622 while (Lex.getKind() != lltok::rbrace)
4623 if (ParseUseListOrder(&PFS))
4629 // Verify function is ok.
4630 return PFS.FinishFunction();
4634 /// ::= LabelStr? Instruction*
4635 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4636 // If this basic block starts out with a name, remember it.
4638 LocTy NameLoc = Lex.getLoc();
4639 if (Lex.getKind() == lltok::LabelStr) {
4640 Name = Lex.getStrVal();
4644 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4646 return Error(NameLoc,
4647 "unable to create block named '" + Name + "'");
4649 std::string NameStr;
4651 // Parse the instructions in this block until we get a terminator.
4654 // This instruction may have three possibilities for a name: a) none
4655 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4656 LocTy NameLoc = Lex.getLoc();
4660 if (Lex.getKind() == lltok::LocalVarID) {
4661 NameID = Lex.getUIntVal();
4663 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4665 } else if (Lex.getKind() == lltok::LocalVar) {
4666 NameStr = Lex.getStrVal();
4668 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4672 switch (ParseInstruction(Inst, BB, PFS)) {
4673 default: llvm_unreachable("Unknown ParseInstruction result!");
4674 case InstError: return true;
4676 BB->getInstList().push_back(Inst);
4678 // With a normal result, we check to see if the instruction is followed by
4679 // a comma and metadata.
4680 if (EatIfPresent(lltok::comma))
4681 if (ParseInstructionMetadata(*Inst))
4684 case InstExtraComma:
4685 BB->getInstList().push_back(Inst);
4687 // If the instruction parser ate an extra comma at the end of it, it
4688 // *must* be followed by metadata.
4689 if (ParseInstructionMetadata(*Inst))
4694 // Set the name on the instruction.
4695 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4696 } while (!isa<TerminatorInst>(Inst));
4701 //===----------------------------------------------------------------------===//
4702 // Instruction Parsing.
4703 //===----------------------------------------------------------------------===//
4705 /// ParseInstruction - Parse one of the many different instructions.
4707 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4708 PerFunctionState &PFS) {
4709 lltok::Kind Token = Lex.getKind();
4710 if (Token == lltok::Eof)
4711 return TokError("found end of file when expecting more instructions");
4712 LocTy Loc = Lex.getLoc();
4713 unsigned KeywordVal = Lex.getUIntVal();
4714 Lex.Lex(); // Eat the keyword.
4717 default: return Error(Loc, "expected instruction opcode");
4718 // Terminator Instructions.
4719 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4720 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4721 case lltok::kw_br: return ParseBr(Inst, PFS);
4722 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4723 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4724 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4725 case lltok::kw_resume: return ParseResume(Inst, PFS);
4726 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4727 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4728 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
4729 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4730 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4731 // Binary Operators.
4735 case lltok::kw_shl: {
4736 bool NUW = EatIfPresent(lltok::kw_nuw);
4737 bool NSW = EatIfPresent(lltok::kw_nsw);
4738 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4740 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4742 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4743 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4746 case lltok::kw_fadd:
4747 case lltok::kw_fsub:
4748 case lltok::kw_fmul:
4749 case lltok::kw_fdiv:
4750 case lltok::kw_frem: {
4751 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4752 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4756 Inst->setFastMathFlags(FMF);
4760 case lltok::kw_sdiv:
4761 case lltok::kw_udiv:
4762 case lltok::kw_lshr:
4763 case lltok::kw_ashr: {
4764 bool Exact = EatIfPresent(lltok::kw_exact);
4766 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4767 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4771 case lltok::kw_urem:
4772 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4775 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4776 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4777 case lltok::kw_fcmp: {
4778 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4779 int Res = ParseCompare(Inst, PFS, KeywordVal);
4783 Inst->setFastMathFlags(FMF);
4788 case lltok::kw_trunc:
4789 case lltok::kw_zext:
4790 case lltok::kw_sext:
4791 case lltok::kw_fptrunc:
4792 case lltok::kw_fpext:
4793 case lltok::kw_bitcast:
4794 case lltok::kw_addrspacecast:
4795 case lltok::kw_uitofp:
4796 case lltok::kw_sitofp:
4797 case lltok::kw_fptoui:
4798 case lltok::kw_fptosi:
4799 case lltok::kw_inttoptr:
4800 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4802 case lltok::kw_select: return ParseSelect(Inst, PFS);
4803 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4804 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4805 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4806 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4807 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4808 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4810 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4811 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4812 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4813 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
4815 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4816 case lltok::kw_load: return ParseLoad(Inst, PFS);
4817 case lltok::kw_store: return ParseStore(Inst, PFS);
4818 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4819 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4820 case lltok::kw_fence: return ParseFence(Inst, PFS);
4821 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4822 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4823 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4827 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4828 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4829 if (Opc == Instruction::FCmp) {
4830 switch (Lex.getKind()) {
4831 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4832 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4833 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4834 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4835 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4836 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4837 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4838 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4839 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4840 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4841 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4842 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4843 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4844 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4845 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4846 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4847 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4850 switch (Lex.getKind()) {
4851 default: return TokError("expected icmp predicate (e.g. 'eq')");
4852 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4853 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4854 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4855 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4856 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4857 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4858 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4859 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4860 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4861 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4868 //===----------------------------------------------------------------------===//
4869 // Terminator Instructions.
4870 //===----------------------------------------------------------------------===//
4872 /// ParseRet - Parse a return instruction.
4873 /// ::= 'ret' void (',' !dbg, !1)*
4874 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4875 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4876 PerFunctionState &PFS) {
4877 SMLoc TypeLoc = Lex.getLoc();
4879 if (ParseType(Ty, true /*void allowed*/)) return true;
4881 Type *ResType = PFS.getFunction().getReturnType();
4883 if (Ty->isVoidTy()) {
4884 if (!ResType->isVoidTy())
4885 return Error(TypeLoc, "value doesn't match function result type '" +
4886 getTypeString(ResType) + "'");
4888 Inst = ReturnInst::Create(Context);
4893 if (ParseValue(Ty, RV, PFS)) return true;
4895 if (ResType != RV->getType())
4896 return Error(TypeLoc, "value doesn't match function result type '" +
4897 getTypeString(ResType) + "'");
4899 Inst = ReturnInst::Create(Context, RV);
4905 /// ::= 'br' TypeAndValue
4906 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4907 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4910 BasicBlock *Op1, *Op2;
4911 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4913 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4914 Inst = BranchInst::Create(BB);
4918 if (Op0->getType() != Type::getInt1Ty(Context))
4919 return Error(Loc, "branch condition must have 'i1' type");
4921 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4922 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4923 ParseToken(lltok::comma, "expected ',' after true destination") ||
4924 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4927 Inst = BranchInst::Create(Op1, Op2, Op0);
4933 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4935 /// ::= (TypeAndValue ',' TypeAndValue)*
4936 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4937 LocTy CondLoc, BBLoc;
4939 BasicBlock *DefaultBB;
4940 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4941 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4942 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4943 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4946 if (!Cond->getType()->isIntegerTy())
4947 return Error(CondLoc, "switch condition must have integer type");
4949 // Parse the jump table pairs.
4950 SmallPtrSet<Value*, 32> SeenCases;
4951 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4952 while (Lex.getKind() != lltok::rsquare) {
4956 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4957 ParseToken(lltok::comma, "expected ',' after case value") ||
4958 ParseTypeAndBasicBlock(DestBB, PFS))
4961 if (!SeenCases.insert(Constant).second)
4962 return Error(CondLoc, "duplicate case value in switch");
4963 if (!isa<ConstantInt>(Constant))
4964 return Error(CondLoc, "case value is not a constant integer");
4966 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4969 Lex.Lex(); // Eat the ']'.
4971 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4972 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4973 SI->addCase(Table[i].first, Table[i].second);
4980 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4981 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4984 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4985 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4986 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4989 if (!Address->getType()->isPointerTy())
4990 return Error(AddrLoc, "indirectbr address must have pointer type");
4992 // Parse the destination list.
4993 SmallVector<BasicBlock*, 16> DestList;
4995 if (Lex.getKind() != lltok::rsquare) {
4997 if (ParseTypeAndBasicBlock(DestBB, PFS))
4999 DestList.push_back(DestBB);
5001 while (EatIfPresent(lltok::comma)) {
5002 if (ParseTypeAndBasicBlock(DestBB, PFS))
5004 DestList.push_back(DestBB);
5008 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5011 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5012 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5013 IBI->addDestination(DestList[i]);
5020 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5021 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5022 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5023 LocTy CallLoc = Lex.getLoc();
5024 AttrBuilder RetAttrs, FnAttrs;
5025 std::vector<unsigned> FwdRefAttrGrps;
5028 Type *RetType = nullptr;
5031 SmallVector<ParamInfo, 16> ArgList;
5032 SmallVector<OperandBundleDef, 2> BundleList;
5034 BasicBlock *NormalBB, *UnwindBB;
5035 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5036 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5037 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5038 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5040 ParseOptionalOperandBundles(BundleList, PFS) ||
5041 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5042 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5043 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5044 ParseTypeAndBasicBlock(UnwindBB, PFS))
5047 // If RetType is a non-function pointer type, then this is the short syntax
5048 // for the call, which means that RetType is just the return type. Infer the
5049 // rest of the function argument types from the arguments that are present.
5050 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5052 // Pull out the types of all of the arguments...
5053 std::vector<Type*> ParamTypes;
5054 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5055 ParamTypes.push_back(ArgList[i].V->getType());
5057 if (!FunctionType::isValidReturnType(RetType))
5058 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5060 Ty = FunctionType::get(RetType, ParamTypes, false);
5065 // Look up the callee.
5067 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5070 // Set up the Attribute for the function.
5071 SmallVector<AttributeSet, 8> Attrs;
5072 if (RetAttrs.hasAttributes())
5073 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5074 AttributeSet::ReturnIndex,
5077 SmallVector<Value*, 8> Args;
5079 // Loop through FunctionType's arguments and ensure they are specified
5080 // correctly. Also, gather any parameter attributes.
5081 FunctionType::param_iterator I = Ty->param_begin();
5082 FunctionType::param_iterator E = Ty->param_end();
5083 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5084 Type *ExpectedTy = nullptr;
5087 } else if (!Ty->isVarArg()) {
5088 return Error(ArgList[i].Loc, "too many arguments specified");
5091 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5092 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5093 getTypeString(ExpectedTy) + "'");
5094 Args.push_back(ArgList[i].V);
5095 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5096 AttrBuilder B(ArgList[i].Attrs, i + 1);
5097 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5102 return Error(CallLoc, "not enough parameters specified for call");
5104 if (FnAttrs.hasAttributes()) {
5105 if (FnAttrs.hasAlignmentAttr())
5106 return Error(CallLoc, "invoke instructions may not have an alignment");
5108 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5109 AttributeSet::FunctionIndex,
5113 // Finish off the Attribute and check them
5114 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5117 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5118 II->setCallingConv(CC);
5119 II->setAttributes(PAL);
5120 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5126 /// ::= 'resume' TypeAndValue
5127 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5128 Value *Exn; LocTy ExnLoc;
5129 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5132 ResumeInst *RI = ResumeInst::Create(Exn);
5137 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5138 PerFunctionState &PFS) {
5139 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5142 while (Lex.getKind() != lltok::rsquare) {
5143 // If this isn't the first argument, we need a comma.
5144 if (!Args.empty() &&
5145 ParseToken(lltok::comma, "expected ',' in argument list"))
5148 // Parse the argument.
5150 Type *ArgTy = nullptr;
5151 if (ParseType(ArgTy, ArgLoc))
5155 if (ArgTy->isMetadataTy()) {
5156 if (ParseMetadataAsValue(V, PFS))
5159 if (ParseValue(ArgTy, V, PFS))
5165 Lex.Lex(); // Lex the ']'.
5170 /// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5171 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5172 Value *CleanupPad = nullptr;
5174 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5177 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5180 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5183 BasicBlock *UnwindBB = nullptr;
5184 if (Lex.getKind() == lltok::kw_to) {
5186 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5189 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5194 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5199 /// ::= 'catchret' from Parent Value 'to' TypeAndValue
5200 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5201 Value *CatchPad = nullptr;
5203 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5206 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5210 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5211 ParseTypeAndBasicBlock(BB, PFS))
5214 Inst = CatchReturnInst::Create(CatchPad, BB);
5218 /// ParseCatchSwitch
5219 /// ::= 'catchswitch' within Parent
5220 bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5224 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5227 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5228 Lex.getKind() != lltok::LocalVarID)
5229 return TokError("expected scope value for catchswitch");
5231 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5234 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5237 SmallVector<BasicBlock *, 32> Table;
5240 if (ParseTypeAndBasicBlock(DestBB, PFS))
5242 Table.push_back(DestBB);
5243 } while (EatIfPresent(lltok::comma));
5245 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5248 if (ParseToken(lltok::kw_unwind,
5249 "expected 'unwind' after catchswitch scope"))
5252 BasicBlock *UnwindBB = nullptr;
5253 if (EatIfPresent(lltok::kw_to)) {
5254 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5257 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5262 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5263 for (BasicBlock *DestBB : Table)
5264 CatchSwitch->addHandler(DestBB);
5270 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5271 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5272 Value *CatchSwitch = nullptr;
5274 if (ParseToken(lltok::kw_within, "expected 'within' after catchpad"))
5277 if (Lex.getKind() != lltok::LocalVar && Lex.getKind() != lltok::LocalVarID)
5278 return TokError("expected scope value for catchpad");
5280 if (ParseValue(Type::getTokenTy(Context), CatchSwitch, PFS))
5283 SmallVector<Value *, 8> Args;
5284 if (ParseExceptionArgs(Args, PFS))
5287 Inst = CatchPadInst::Create(CatchSwitch, Args);
5292 /// ::= 'cleanuppad' within Parent ParamList
5293 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5294 Value *ParentPad = nullptr;
5296 if (ParseToken(lltok::kw_within, "expected 'within' after cleanuppad"))
5299 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5300 Lex.getKind() != lltok::LocalVarID)
5301 return TokError("expected scope value for cleanuppad");
5303 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5306 SmallVector<Value *, 8> Args;
5307 if (ParseExceptionArgs(Args, PFS))
5310 Inst = CleanupPadInst::Create(ParentPad, Args);
5314 //===----------------------------------------------------------------------===//
5315 // Binary Operators.
5316 //===----------------------------------------------------------------------===//
5319 /// ::= ArithmeticOps TypeAndValue ',' Value
5321 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5322 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5323 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5324 unsigned Opc, unsigned OperandType) {
5325 LocTy Loc; Value *LHS, *RHS;
5326 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5327 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5328 ParseValue(LHS->getType(), RHS, PFS))
5332 switch (OperandType) {
5333 default: llvm_unreachable("Unknown operand type!");
5334 case 0: // int or FP.
5335 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5336 LHS->getType()->isFPOrFPVectorTy();
5338 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5339 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5343 return Error(Loc, "invalid operand type for instruction");
5345 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5350 /// ::= ArithmeticOps TypeAndValue ',' Value {
5351 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5353 LocTy Loc; Value *LHS, *RHS;
5354 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5355 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5356 ParseValue(LHS->getType(), RHS, PFS))
5359 if (!LHS->getType()->isIntOrIntVectorTy())
5360 return Error(Loc,"instruction requires integer or integer vector operands");
5362 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5368 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5369 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5370 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5372 // Parse the integer/fp comparison predicate.
5376 if (ParseCmpPredicate(Pred, Opc) ||
5377 ParseTypeAndValue(LHS, Loc, PFS) ||
5378 ParseToken(lltok::comma, "expected ',' after compare value") ||
5379 ParseValue(LHS->getType(), RHS, PFS))
5382 if (Opc == Instruction::FCmp) {
5383 if (!LHS->getType()->isFPOrFPVectorTy())
5384 return Error(Loc, "fcmp requires floating point operands");
5385 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5387 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5388 if (!LHS->getType()->isIntOrIntVectorTy() &&
5389 !LHS->getType()->getScalarType()->isPointerTy())
5390 return Error(Loc, "icmp requires integer operands");
5391 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5396 //===----------------------------------------------------------------------===//
5397 // Other Instructions.
5398 //===----------------------------------------------------------------------===//
5402 /// ::= CastOpc TypeAndValue 'to' Type
5403 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5407 Type *DestTy = nullptr;
5408 if (ParseTypeAndValue(Op, Loc, PFS) ||
5409 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5413 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5414 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5415 return Error(Loc, "invalid cast opcode for cast from '" +
5416 getTypeString(Op->getType()) + "' to '" +
5417 getTypeString(DestTy) + "'");
5419 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5424 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5425 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5427 Value *Op0, *Op1, *Op2;
5428 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5429 ParseToken(lltok::comma, "expected ',' after select condition") ||
5430 ParseTypeAndValue(Op1, PFS) ||
5431 ParseToken(lltok::comma, "expected ',' after select value") ||
5432 ParseTypeAndValue(Op2, PFS))
5435 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5436 return Error(Loc, Reason);
5438 Inst = SelectInst::Create(Op0, Op1, Op2);
5443 /// ::= 'va_arg' TypeAndValue ',' Type
5444 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5446 Type *EltTy = nullptr;
5448 if (ParseTypeAndValue(Op, PFS) ||
5449 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5450 ParseType(EltTy, TypeLoc))
5453 if (!EltTy->isFirstClassType())
5454 return Error(TypeLoc, "va_arg requires operand with first class type");
5456 Inst = new VAArgInst(Op, EltTy);
5460 /// ParseExtractElement
5461 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5462 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5465 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5466 ParseToken(lltok::comma, "expected ',' after extract value") ||
5467 ParseTypeAndValue(Op1, PFS))
5470 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5471 return Error(Loc, "invalid extractelement operands");
5473 Inst = ExtractElementInst::Create(Op0, Op1);
5477 /// ParseInsertElement
5478 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5479 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5481 Value *Op0, *Op1, *Op2;
5482 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5483 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5484 ParseTypeAndValue(Op1, PFS) ||
5485 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5486 ParseTypeAndValue(Op2, PFS))
5489 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5490 return Error(Loc, "invalid insertelement operands");
5492 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5496 /// ParseShuffleVector
5497 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5498 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5500 Value *Op0, *Op1, *Op2;
5501 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5502 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5503 ParseTypeAndValue(Op1, PFS) ||
5504 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5505 ParseTypeAndValue(Op2, PFS))
5508 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5509 return Error(Loc, "invalid shufflevector operands");
5511 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5516 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5517 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5518 Type *Ty = nullptr; LocTy TypeLoc;
5521 if (ParseType(Ty, TypeLoc) ||
5522 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5523 ParseValue(Ty, Op0, PFS) ||
5524 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5525 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5526 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5529 bool AteExtraComma = false;
5530 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5532 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5534 if (!EatIfPresent(lltok::comma))
5537 if (Lex.getKind() == lltok::MetadataVar) {
5538 AteExtraComma = true;
5542 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5543 ParseValue(Ty, Op0, PFS) ||
5544 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5545 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5546 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5550 if (!Ty->isFirstClassType())
5551 return Error(TypeLoc, "phi node must have first class type");
5553 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5554 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5555 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5557 return AteExtraComma ? InstExtraComma : InstNormal;
5561 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5563 /// ::= 'catch' TypeAndValue
5565 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5566 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5567 Type *Ty = nullptr; LocTy TyLoc;
5569 if (ParseType(Ty, TyLoc))
5572 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5573 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5575 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5576 LandingPadInst::ClauseType CT;
5577 if (EatIfPresent(lltok::kw_catch))
5578 CT = LandingPadInst::Catch;
5579 else if (EatIfPresent(lltok::kw_filter))
5580 CT = LandingPadInst::Filter;
5582 return TokError("expected 'catch' or 'filter' clause type");
5586 if (ParseTypeAndValue(V, VLoc, PFS))
5589 // A 'catch' type expects a non-array constant. A filter clause expects an
5591 if (CT == LandingPadInst::Catch) {
5592 if (isa<ArrayType>(V->getType()))
5593 Error(VLoc, "'catch' clause has an invalid type");
5595 if (!isa<ArrayType>(V->getType()))
5596 Error(VLoc, "'filter' clause has an invalid type");
5599 Constant *CV = dyn_cast<Constant>(V);
5601 return Error(VLoc, "clause argument must be a constant");
5605 Inst = LP.release();
5610 /// ::= 'call' OptionalFastMathFlags OptionalCallingConv
5611 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5612 /// ::= 'tail' 'call' OptionalFastMathFlags OptionalCallingConv
5613 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5614 /// ::= 'musttail' 'call' OptionalFastMathFlags OptionalCallingConv
5615 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5616 /// ::= 'notail' 'call' OptionalFastMathFlags OptionalCallingConv
5617 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5618 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5619 CallInst::TailCallKind TCK) {
5620 AttrBuilder RetAttrs, FnAttrs;
5621 std::vector<unsigned> FwdRefAttrGrps;
5624 Type *RetType = nullptr;
5627 SmallVector<ParamInfo, 16> ArgList;
5628 SmallVector<OperandBundleDef, 2> BundleList;
5629 LocTy CallLoc = Lex.getLoc();
5631 if (TCK != CallInst::TCK_None &&
5632 ParseToken(lltok::kw_call,
5633 "expected 'tail call', 'musttail call', or 'notail call'"))
5636 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5638 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5639 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5640 ParseValID(CalleeID) ||
5641 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5642 PFS.getFunction().isVarArg()) ||
5643 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5644 ParseOptionalOperandBundles(BundleList, PFS))
5647 if (FMF.any() && !RetType->isFPOrFPVectorTy())
5648 return Error(CallLoc, "fast-math-flags specified for call without "
5649 "floating-point scalar or vector return type");
5651 // If RetType is a non-function pointer type, then this is the short syntax
5652 // for the call, which means that RetType is just the return type. Infer the
5653 // rest of the function argument types from the arguments that are present.
5654 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5656 // Pull out the types of all of the arguments...
5657 std::vector<Type*> ParamTypes;
5658 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5659 ParamTypes.push_back(ArgList[i].V->getType());
5661 if (!FunctionType::isValidReturnType(RetType))
5662 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5664 Ty = FunctionType::get(RetType, ParamTypes, false);
5669 // Look up the callee.
5671 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5674 // Set up the Attribute for the function.
5675 SmallVector<AttributeSet, 8> Attrs;
5676 if (RetAttrs.hasAttributes())
5677 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5678 AttributeSet::ReturnIndex,
5681 SmallVector<Value*, 8> Args;
5683 // Loop through FunctionType's arguments and ensure they are specified
5684 // correctly. Also, gather any parameter attributes.
5685 FunctionType::param_iterator I = Ty->param_begin();
5686 FunctionType::param_iterator E = Ty->param_end();
5687 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5688 Type *ExpectedTy = nullptr;
5691 } else if (!Ty->isVarArg()) {
5692 return Error(ArgList[i].Loc, "too many arguments specified");
5695 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5696 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5697 getTypeString(ExpectedTy) + "'");
5698 Args.push_back(ArgList[i].V);
5699 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5700 AttrBuilder B(ArgList[i].Attrs, i + 1);
5701 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5706 return Error(CallLoc, "not enough parameters specified for call");
5708 if (FnAttrs.hasAttributes()) {
5709 if (FnAttrs.hasAlignmentAttr())
5710 return Error(CallLoc, "call instructions may not have an alignment");
5712 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5713 AttributeSet::FunctionIndex,
5717 // Finish off the Attribute and check them
5718 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5720 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5721 CI->setTailCallKind(TCK);
5722 CI->setCallingConv(CC);
5724 CI->setFastMathFlags(FMF);
5725 CI->setAttributes(PAL);
5726 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5731 //===----------------------------------------------------------------------===//
5732 // Memory Instructions.
5733 //===----------------------------------------------------------------------===//
5736 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5737 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5738 Value *Size = nullptr;
5739 LocTy SizeLoc, TyLoc;
5740 unsigned Alignment = 0;
5743 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5745 if (ParseType(Ty, TyLoc)) return true;
5747 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5748 return Error(TyLoc, "invalid type for alloca");
5750 bool AteExtraComma = false;
5751 if (EatIfPresent(lltok::comma)) {
5752 if (Lex.getKind() == lltok::kw_align) {
5753 if (ParseOptionalAlignment(Alignment)) return true;
5754 } else if (Lex.getKind() == lltok::MetadataVar) {
5755 AteExtraComma = true;
5757 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5758 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5763 if (Size && !Size->getType()->isIntegerTy())
5764 return Error(SizeLoc, "element count must have integer type");
5766 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5767 AI->setUsedWithInAlloca(IsInAlloca);
5769 return AteExtraComma ? InstExtraComma : InstNormal;
5773 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5774 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5775 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5776 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5777 Value *Val; LocTy Loc;
5778 unsigned Alignment = 0;
5779 bool AteExtraComma = false;
5780 bool isAtomic = false;
5781 AtomicOrdering Ordering = NotAtomic;
5782 SynchronizationScope Scope = CrossThread;
5784 if (Lex.getKind() == lltok::kw_atomic) {
5789 bool isVolatile = false;
5790 if (Lex.getKind() == lltok::kw_volatile) {
5796 LocTy ExplicitTypeLoc = Lex.getLoc();
5797 if (ParseType(Ty) ||
5798 ParseToken(lltok::comma, "expected comma after load's type") ||
5799 ParseTypeAndValue(Val, Loc, PFS) ||
5800 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5801 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5804 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5805 return Error(Loc, "load operand must be a pointer to a first class type");
5806 if (isAtomic && !Alignment)
5807 return Error(Loc, "atomic load must have explicit non-zero alignment");
5808 if (Ordering == Release || Ordering == AcquireRelease)
5809 return Error(Loc, "atomic load cannot use Release ordering");
5811 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5812 return Error(ExplicitTypeLoc,
5813 "explicit pointee type doesn't match operand's pointee type");
5815 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5816 return AteExtraComma ? InstExtraComma : InstNormal;
5821 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5822 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5823 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5824 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5825 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5826 unsigned Alignment = 0;
5827 bool AteExtraComma = false;
5828 bool isAtomic = false;
5829 AtomicOrdering Ordering = NotAtomic;
5830 SynchronizationScope Scope = CrossThread;
5832 if (Lex.getKind() == lltok::kw_atomic) {
5837 bool isVolatile = false;
5838 if (Lex.getKind() == lltok::kw_volatile) {
5843 if (ParseTypeAndValue(Val, Loc, PFS) ||
5844 ParseToken(lltok::comma, "expected ',' after store operand") ||
5845 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5846 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5847 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5850 if (!Ptr->getType()->isPointerTy())
5851 return Error(PtrLoc, "store operand must be a pointer");
5852 if (!Val->getType()->isFirstClassType())
5853 return Error(Loc, "store operand must be a first class value");
5854 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5855 return Error(Loc, "stored value and pointer type do not match");
5856 if (isAtomic && !Alignment)
5857 return Error(Loc, "atomic store must have explicit non-zero alignment");
5858 if (Ordering == Acquire || Ordering == AcquireRelease)
5859 return Error(Loc, "atomic store cannot use Acquire ordering");
5861 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5862 return AteExtraComma ? InstExtraComma : InstNormal;
5866 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5867 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5868 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5869 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5870 bool AteExtraComma = false;
5871 AtomicOrdering SuccessOrdering = NotAtomic;
5872 AtomicOrdering FailureOrdering = NotAtomic;
5873 SynchronizationScope Scope = CrossThread;
5874 bool isVolatile = false;
5875 bool isWeak = false;
5877 if (EatIfPresent(lltok::kw_weak))
5880 if (EatIfPresent(lltok::kw_volatile))
5883 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5884 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5885 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5886 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5887 ParseTypeAndValue(New, NewLoc, PFS) ||
5888 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5889 ParseOrdering(FailureOrdering))
5892 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5893 return TokError("cmpxchg cannot be unordered");
5894 if (SuccessOrdering < FailureOrdering)
5895 return TokError("cmpxchg must be at least as ordered on success as failure");
5896 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5897 return TokError("cmpxchg failure ordering cannot include release semantics");
5898 if (!Ptr->getType()->isPointerTy())
5899 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5900 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5901 return Error(CmpLoc, "compare value and pointer type do not match");
5902 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5903 return Error(NewLoc, "new value and pointer type do not match");
5904 if (!New->getType()->isIntegerTy())
5905 return Error(NewLoc, "cmpxchg operand must be an integer");
5906 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5907 if (Size < 8 || (Size & (Size - 1)))
5908 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5911 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5912 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5913 CXI->setVolatile(isVolatile);
5914 CXI->setWeak(isWeak);
5916 return AteExtraComma ? InstExtraComma : InstNormal;
5920 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5921 /// 'singlethread'? AtomicOrdering
5922 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5923 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5924 bool AteExtraComma = false;
5925 AtomicOrdering Ordering = NotAtomic;
5926 SynchronizationScope Scope = CrossThread;
5927 bool isVolatile = false;
5928 AtomicRMWInst::BinOp Operation;
5930 if (EatIfPresent(lltok::kw_volatile))
5933 switch (Lex.getKind()) {
5934 default: return TokError("expected binary operation in atomicrmw");
5935 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5936 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5937 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5938 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5939 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5940 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5941 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5942 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5943 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5944 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5945 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5947 Lex.Lex(); // Eat the operation.
5949 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5950 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5951 ParseTypeAndValue(Val, ValLoc, PFS) ||
5952 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5955 if (Ordering == Unordered)
5956 return TokError("atomicrmw cannot be unordered");
5957 if (!Ptr->getType()->isPointerTy())
5958 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5959 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5960 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5961 if (!Val->getType()->isIntegerTy())
5962 return Error(ValLoc, "atomicrmw operand must be an integer");
5963 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5964 if (Size < 8 || (Size & (Size - 1)))
5965 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5968 AtomicRMWInst *RMWI =
5969 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5970 RMWI->setVolatile(isVolatile);
5972 return AteExtraComma ? InstExtraComma : InstNormal;
5976 /// ::= 'fence' 'singlethread'? AtomicOrdering
5977 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5978 AtomicOrdering Ordering = NotAtomic;
5979 SynchronizationScope Scope = CrossThread;
5980 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5983 if (Ordering == Unordered)
5984 return TokError("fence cannot be unordered");
5985 if (Ordering == Monotonic)
5986 return TokError("fence cannot be monotonic");
5988 Inst = new FenceInst(Context, Ordering, Scope);
5992 /// ParseGetElementPtr
5993 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5994 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5995 Value *Ptr = nullptr;
5996 Value *Val = nullptr;
5999 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6002 LocTy ExplicitTypeLoc = Lex.getLoc();
6003 if (ParseType(Ty) ||
6004 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6005 ParseTypeAndValue(Ptr, Loc, PFS))
6008 Type *BaseType = Ptr->getType();
6009 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6010 if (!BasePointerType)
6011 return Error(Loc, "base of getelementptr must be a pointer");
6013 if (Ty != BasePointerType->getElementType())
6014 return Error(ExplicitTypeLoc,
6015 "explicit pointee type doesn't match operand's pointee type");
6017 SmallVector<Value*, 16> Indices;
6018 bool AteExtraComma = false;
6019 // GEP returns a vector of pointers if at least one of parameters is a vector.
6020 // All vector parameters should have the same vector width.
6021 unsigned GEPWidth = BaseType->isVectorTy() ?
6022 BaseType->getVectorNumElements() : 0;
6024 while (EatIfPresent(lltok::comma)) {
6025 if (Lex.getKind() == lltok::MetadataVar) {
6026 AteExtraComma = true;
6029 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6030 if (!Val->getType()->getScalarType()->isIntegerTy())
6031 return Error(EltLoc, "getelementptr index must be an integer");
6033 if (Val->getType()->isVectorTy()) {
6034 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6035 if (GEPWidth && GEPWidth != ValNumEl)
6036 return Error(EltLoc,
6037 "getelementptr vector index has a wrong number of elements");
6038 GEPWidth = ValNumEl;
6040 Indices.push_back(Val);
6043 SmallPtrSet<Type*, 4> Visited;
6044 if (!Indices.empty() && !Ty->isSized(&Visited))
6045 return Error(Loc, "base element of getelementptr must be sized");
6047 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6048 return Error(Loc, "invalid getelementptr indices");
6049 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6051 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6052 return AteExtraComma ? InstExtraComma : InstNormal;
6055 /// ParseExtractValue
6056 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6057 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6058 Value *Val; LocTy Loc;
6059 SmallVector<unsigned, 4> Indices;
6061 if (ParseTypeAndValue(Val, Loc, PFS) ||
6062 ParseIndexList(Indices, AteExtraComma))
6065 if (!Val->getType()->isAggregateType())
6066 return Error(Loc, "extractvalue operand must be aggregate type");
6068 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6069 return Error(Loc, "invalid indices for extractvalue");
6070 Inst = ExtractValueInst::Create(Val, Indices);
6071 return AteExtraComma ? InstExtraComma : InstNormal;
6074 /// ParseInsertValue
6075 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6076 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6077 Value *Val0, *Val1; LocTy Loc0, Loc1;
6078 SmallVector<unsigned, 4> Indices;
6080 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6081 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6082 ParseTypeAndValue(Val1, Loc1, PFS) ||
6083 ParseIndexList(Indices, AteExtraComma))
6086 if (!Val0->getType()->isAggregateType())
6087 return Error(Loc0, "insertvalue operand must be aggregate type");
6089 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6091 return Error(Loc0, "invalid indices for insertvalue");
6092 if (IndexedType != Val1->getType())
6093 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6094 getTypeString(Val1->getType()) + "' instead of '" +
6095 getTypeString(IndexedType) + "'");
6096 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6097 return AteExtraComma ? InstExtraComma : InstNormal;
6100 //===----------------------------------------------------------------------===//
6101 // Embedded metadata.
6102 //===----------------------------------------------------------------------===//
6104 /// ParseMDNodeVector
6105 /// ::= { Element (',' Element)* }
6107 /// ::= 'null' | TypeAndValue
6108 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6109 if (ParseToken(lltok::lbrace, "expected '{' here"))
6112 // Check for an empty list.
6113 if (EatIfPresent(lltok::rbrace))
6117 // Null is a special case since it is typeless.
6118 if (EatIfPresent(lltok::kw_null)) {
6119 Elts.push_back(nullptr);
6124 if (ParseMetadata(MD, nullptr))
6127 } while (EatIfPresent(lltok::comma));
6129 return ParseToken(lltok::rbrace, "expected end of metadata node");
6132 //===----------------------------------------------------------------------===//
6133 // Use-list order directives.
6134 //===----------------------------------------------------------------------===//
6135 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6138 return Error(Loc, "value has no uses");
6140 unsigned NumUses = 0;
6141 SmallDenseMap<const Use *, unsigned, 16> Order;
6142 for (const Use &U : V->uses()) {
6143 if (++NumUses > Indexes.size())
6145 Order[&U] = Indexes[NumUses - 1];
6148 return Error(Loc, "value only has one use");
6149 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6150 return Error(Loc, "wrong number of indexes, expected " +
6151 Twine(std::distance(V->use_begin(), V->use_end())));
6153 V->sortUseList([&](const Use &L, const Use &R) {
6154 return Order.lookup(&L) < Order.lookup(&R);
6159 /// ParseUseListOrderIndexes
6160 /// ::= '{' uint32 (',' uint32)+ '}'
6161 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6162 SMLoc Loc = Lex.getLoc();
6163 if (ParseToken(lltok::lbrace, "expected '{' here"))
6165 if (Lex.getKind() == lltok::rbrace)
6166 return Lex.Error("expected non-empty list of uselistorder indexes");
6168 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6169 // indexes should be distinct numbers in the range [0, size-1], and should
6171 unsigned Offset = 0;
6173 bool IsOrdered = true;
6174 assert(Indexes.empty() && "Expected empty order vector");
6177 if (ParseUInt32(Index))
6180 // Update consistency checks.
6181 Offset += Index - Indexes.size();
6182 Max = std::max(Max, Index);
6183 IsOrdered &= Index == Indexes.size();
6185 Indexes.push_back(Index);
6186 } while (EatIfPresent(lltok::comma));
6188 if (ParseToken(lltok::rbrace, "expected '}' here"))
6191 if (Indexes.size() < 2)
6192 return Error(Loc, "expected >= 2 uselistorder indexes");
6193 if (Offset != 0 || Max >= Indexes.size())
6194 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6196 return Error(Loc, "expected uselistorder indexes to change the order");
6201 /// ParseUseListOrder
6202 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6203 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6204 SMLoc Loc = Lex.getLoc();
6205 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6209 SmallVector<unsigned, 16> Indexes;
6210 if (ParseTypeAndValue(V, PFS) ||
6211 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6212 ParseUseListOrderIndexes(Indexes))
6215 return sortUseListOrder(V, Indexes, Loc);
6218 /// ParseUseListOrderBB
6219 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6220 bool LLParser::ParseUseListOrderBB() {
6221 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6222 SMLoc Loc = Lex.getLoc();
6226 SmallVector<unsigned, 16> Indexes;
6227 if (ParseValID(Fn) ||
6228 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6229 ParseValID(Label) ||
6230 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6231 ParseUseListOrderIndexes(Indexes))
6234 // Check the function.
6236 if (Fn.Kind == ValID::t_GlobalName)
6237 GV = M->getNamedValue(Fn.StrVal);
6238 else if (Fn.Kind == ValID::t_GlobalID)
6239 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6241 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6243 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6244 auto *F = dyn_cast<Function>(GV);
6246 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6247 if (F->isDeclaration())
6248 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6250 // Check the basic block.
6251 if (Label.Kind == ValID::t_LocalID)
6252 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6253 if (Label.Kind != ValID::t_LocalName)
6254 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6255 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6257 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6258 if (!isa<BasicBlock>(V))
6259 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6261 return sortUseListOrder(V, Indexes, Loc);