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_inlinehint: B.addAttribute(Attribute::InlineHint); break;
999 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1000 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1001 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1002 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1003 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1004 case lltok::kw_noimplicitfloat:
1005 B.addAttribute(Attribute::NoImplicitFloat); break;
1006 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1007 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1008 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1009 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1010 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1011 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1012 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1013 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1014 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1015 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1016 case lltok::kw_returns_twice:
1017 B.addAttribute(Attribute::ReturnsTwice); break;
1018 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1019 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1020 case lltok::kw_sspstrong:
1021 B.addAttribute(Attribute::StackProtectStrong); break;
1022 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1023 case lltok::kw_sanitize_address:
1024 B.addAttribute(Attribute::SanitizeAddress); break;
1025 case lltok::kw_sanitize_thread:
1026 B.addAttribute(Attribute::SanitizeThread); break;
1027 case lltok::kw_sanitize_memory:
1028 B.addAttribute(Attribute::SanitizeMemory); break;
1029 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1032 case lltok::kw_inreg:
1033 case lltok::kw_signext:
1034 case lltok::kw_zeroext:
1037 "invalid use of attribute on a function");
1039 case lltok::kw_byval:
1040 case lltok::kw_dereferenceable:
1041 case lltok::kw_dereferenceable_or_null:
1042 case lltok::kw_inalloca:
1043 case lltok::kw_nest:
1044 case lltok::kw_noalias:
1045 case lltok::kw_nocapture:
1046 case lltok::kw_nonnull:
1047 case lltok::kw_returned:
1048 case lltok::kw_sret:
1051 "invalid use of parameter-only attribute on a function");
1059 //===----------------------------------------------------------------------===//
1060 // GlobalValue Reference/Resolution Routines.
1061 //===----------------------------------------------------------------------===//
1063 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1064 const std::string &Name) {
1065 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1066 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1068 return new GlobalVariable(*M, PTy->getElementType(), false,
1069 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1070 nullptr, GlobalVariable::NotThreadLocal,
1071 PTy->getAddressSpace());
1074 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1075 /// forward reference record if needed. This can return null if the value
1076 /// exists but does not have the right type.
1077 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1079 PointerType *PTy = dyn_cast<PointerType>(Ty);
1081 Error(Loc, "global variable reference must have pointer type");
1085 // Look this name up in the normal function symbol table.
1087 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1089 // If this is a forward reference for the value, see if we already created a
1090 // forward ref record.
1092 auto I = ForwardRefVals.find(Name);
1093 if (I != ForwardRefVals.end())
1094 Val = I->second.first;
1097 // If we have the value in the symbol table or fwd-ref table, return it.
1099 if (Val->getType() == Ty) return Val;
1100 Error(Loc, "'@" + Name + "' defined with type '" +
1101 getTypeString(Val->getType()) + "'");
1105 // Otherwise, create a new forward reference for this value and remember it.
1106 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1107 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1111 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1112 PointerType *PTy = dyn_cast<PointerType>(Ty);
1114 Error(Loc, "global variable reference must have pointer type");
1118 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1120 // If this is a forward reference for the value, see if we already created a
1121 // forward ref record.
1123 auto I = ForwardRefValIDs.find(ID);
1124 if (I != ForwardRefValIDs.end())
1125 Val = I->second.first;
1128 // If we have the value in the symbol table or fwd-ref table, return it.
1130 if (Val->getType() == Ty) return Val;
1131 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1132 getTypeString(Val->getType()) + "'");
1136 // Otherwise, create a new forward reference for this value and remember it.
1137 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1138 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1143 //===----------------------------------------------------------------------===//
1144 // Comdat Reference/Resolution Routines.
1145 //===----------------------------------------------------------------------===//
1147 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1148 // Look this name up in the comdat symbol table.
1149 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1150 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1151 if (I != ComdatSymTab.end())
1154 // Otherwise, create a new forward reference for this value and remember it.
1155 Comdat *C = M->getOrInsertComdat(Name);
1156 ForwardRefComdats[Name] = Loc;
1161 //===----------------------------------------------------------------------===//
1163 //===----------------------------------------------------------------------===//
1165 /// ParseToken - If the current token has the specified kind, eat it and return
1166 /// success. Otherwise, emit the specified error and return failure.
1167 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1168 if (Lex.getKind() != T)
1169 return TokError(ErrMsg);
1174 /// ParseStringConstant
1175 /// ::= StringConstant
1176 bool LLParser::ParseStringConstant(std::string &Result) {
1177 if (Lex.getKind() != lltok::StringConstant)
1178 return TokError("expected string constant");
1179 Result = Lex.getStrVal();
1186 bool LLParser::ParseUInt32(unsigned &Val) {
1187 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1188 return TokError("expected integer");
1189 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1190 if (Val64 != unsigned(Val64))
1191 return TokError("expected 32-bit integer (too large)");
1199 bool LLParser::ParseUInt64(uint64_t &Val) {
1200 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1201 return TokError("expected integer");
1202 Val = Lex.getAPSIntVal().getLimitedValue();
1208 /// := 'localdynamic'
1209 /// := 'initialexec'
1211 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1212 switch (Lex.getKind()) {
1214 return TokError("expected localdynamic, initialexec or localexec");
1215 case lltok::kw_localdynamic:
1216 TLM = GlobalVariable::LocalDynamicTLSModel;
1218 case lltok::kw_initialexec:
1219 TLM = GlobalVariable::InitialExecTLSModel;
1221 case lltok::kw_localexec:
1222 TLM = GlobalVariable::LocalExecTLSModel;
1230 /// ParseOptionalThreadLocal
1232 /// := 'thread_local'
1233 /// := 'thread_local' '(' tlsmodel ')'
1234 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1235 TLM = GlobalVariable::NotThreadLocal;
1236 if (!EatIfPresent(lltok::kw_thread_local))
1239 TLM = GlobalVariable::GeneralDynamicTLSModel;
1240 if (Lex.getKind() == lltok::lparen) {
1242 return ParseTLSModel(TLM) ||
1243 ParseToken(lltok::rparen, "expected ')' after thread local model");
1248 /// ParseOptionalAddrSpace
1250 /// := 'addrspace' '(' uint32 ')'
1251 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1253 if (!EatIfPresent(lltok::kw_addrspace))
1255 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1256 ParseUInt32(AddrSpace) ||
1257 ParseToken(lltok::rparen, "expected ')' in address space");
1260 /// ParseStringAttribute
1261 /// := StringConstant
1262 /// := StringConstant '=' StringConstant
1263 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1264 std::string Attr = Lex.getStrVal();
1267 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1269 B.addAttribute(Attr, Val);
1273 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1274 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1275 bool HaveError = false;
1280 lltok::Kind Token = Lex.getKind();
1282 default: // End of attributes.
1284 case lltok::StringConstant: {
1285 if (ParseStringAttribute(B))
1289 case lltok::kw_align: {
1291 if (ParseOptionalAlignment(Alignment))
1293 B.addAlignmentAttr(Alignment);
1296 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1297 case lltok::kw_dereferenceable: {
1299 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1301 B.addDereferenceableAttr(Bytes);
1304 case lltok::kw_dereferenceable_or_null: {
1306 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1308 B.addDereferenceableOrNullAttr(Bytes);
1311 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1312 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1313 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1314 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1315 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1316 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1317 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1318 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1319 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1320 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1321 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1322 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1324 case lltok::kw_alignstack:
1325 case lltok::kw_alwaysinline:
1326 case lltok::kw_argmemonly:
1327 case lltok::kw_builtin:
1328 case lltok::kw_inlinehint:
1329 case lltok::kw_jumptable:
1330 case lltok::kw_minsize:
1331 case lltok::kw_naked:
1332 case lltok::kw_nobuiltin:
1333 case lltok::kw_noduplicate:
1334 case lltok::kw_noimplicitfloat:
1335 case lltok::kw_noinline:
1336 case lltok::kw_nonlazybind:
1337 case lltok::kw_noredzone:
1338 case lltok::kw_noreturn:
1339 case lltok::kw_nounwind:
1340 case lltok::kw_optnone:
1341 case lltok::kw_optsize:
1342 case lltok::kw_returns_twice:
1343 case lltok::kw_sanitize_address:
1344 case lltok::kw_sanitize_memory:
1345 case lltok::kw_sanitize_thread:
1347 case lltok::kw_sspreq:
1348 case lltok::kw_sspstrong:
1349 case lltok::kw_safestack:
1350 case lltok::kw_uwtable:
1351 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1359 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1360 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1361 bool HaveError = false;
1366 lltok::Kind Token = Lex.getKind();
1368 default: // End of attributes.
1370 case lltok::StringConstant: {
1371 if (ParseStringAttribute(B))
1375 case lltok::kw_dereferenceable: {
1377 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1379 B.addDereferenceableAttr(Bytes);
1382 case lltok::kw_dereferenceable_or_null: {
1384 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1386 B.addDereferenceableOrNullAttr(Bytes);
1389 case lltok::kw_align: {
1391 if (ParseOptionalAlignment(Alignment))
1393 B.addAlignmentAttr(Alignment);
1396 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1397 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1398 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1399 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1400 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1403 case lltok::kw_byval:
1404 case lltok::kw_inalloca:
1405 case lltok::kw_nest:
1406 case lltok::kw_nocapture:
1407 case lltok::kw_returned:
1408 case lltok::kw_sret:
1409 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1412 case lltok::kw_alignstack:
1413 case lltok::kw_alwaysinline:
1414 case lltok::kw_argmemonly:
1415 case lltok::kw_builtin:
1416 case lltok::kw_cold:
1417 case lltok::kw_inlinehint:
1418 case lltok::kw_jumptable:
1419 case lltok::kw_minsize:
1420 case lltok::kw_naked:
1421 case lltok::kw_nobuiltin:
1422 case lltok::kw_noduplicate:
1423 case lltok::kw_noimplicitfloat:
1424 case lltok::kw_noinline:
1425 case lltok::kw_nonlazybind:
1426 case lltok::kw_noredzone:
1427 case lltok::kw_noreturn:
1428 case lltok::kw_nounwind:
1429 case lltok::kw_optnone:
1430 case lltok::kw_optsize:
1431 case lltok::kw_returns_twice:
1432 case lltok::kw_sanitize_address:
1433 case lltok::kw_sanitize_memory:
1434 case lltok::kw_sanitize_thread:
1436 case lltok::kw_sspreq:
1437 case lltok::kw_sspstrong:
1438 case lltok::kw_safestack:
1439 case lltok::kw_uwtable:
1440 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1443 case lltok::kw_readnone:
1444 case lltok::kw_readonly:
1445 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1452 /// ParseOptionalLinkage
1459 /// ::= 'linkonce_odr'
1460 /// ::= 'available_externally'
1463 /// ::= 'extern_weak'
1465 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1467 switch (Lex.getKind()) {
1468 default: Res=GlobalValue::ExternalLinkage; return false;
1469 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1470 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1471 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1472 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1473 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1474 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1475 case lltok::kw_available_externally:
1476 Res = GlobalValue::AvailableExternallyLinkage;
1478 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1479 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1480 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1481 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1488 /// ParseOptionalVisibility
1494 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1495 switch (Lex.getKind()) {
1496 default: Res = GlobalValue::DefaultVisibility; return false;
1497 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1498 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1499 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1505 /// ParseOptionalDLLStorageClass
1510 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1511 switch (Lex.getKind()) {
1512 default: Res = GlobalValue::DefaultStorageClass; return false;
1513 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1514 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1520 /// ParseOptionalCallingConv
1524 /// ::= 'intel_ocl_bicc'
1526 /// ::= 'x86_stdcallcc'
1527 /// ::= 'x86_fastcallcc'
1528 /// ::= 'x86_thiscallcc'
1529 /// ::= 'x86_vectorcallcc'
1530 /// ::= 'arm_apcscc'
1531 /// ::= 'arm_aapcscc'
1532 /// ::= 'arm_aapcs_vfpcc'
1533 /// ::= 'msp430_intrcc'
1534 /// ::= 'ptx_kernel'
1535 /// ::= 'ptx_device'
1537 /// ::= 'spir_kernel'
1538 /// ::= 'x86_64_sysvcc'
1539 /// ::= 'x86_64_win64cc'
1540 /// ::= 'webkit_jscc'
1542 /// ::= 'preserve_mostcc'
1543 /// ::= 'preserve_allcc'
1549 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1550 switch (Lex.getKind()) {
1551 default: CC = CallingConv::C; return false;
1552 case lltok::kw_ccc: CC = CallingConv::C; break;
1553 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1554 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1555 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1556 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1557 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1558 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1559 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1560 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1561 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1562 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1563 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1564 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1565 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1566 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1567 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1568 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1569 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1570 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1571 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1572 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1573 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1574 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1575 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1576 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1577 case lltok::kw_cc: {
1579 return ParseUInt32(CC);
1587 /// ParseMetadataAttachment
1589 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1590 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1592 std::string Name = Lex.getStrVal();
1593 Kind = M->getMDKindID(Name);
1596 return ParseMDNode(MD);
1599 /// ParseInstructionMetadata
1600 /// ::= !dbg !42 (',' !dbg !57)*
1601 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1603 if (Lex.getKind() != lltok::MetadataVar)
1604 return TokError("expected metadata after comma");
1608 if (ParseMetadataAttachment(MDK, N))
1611 Inst.setMetadata(MDK, N);
1612 if (MDK == LLVMContext::MD_tbaa)
1613 InstsWithTBAATag.push_back(&Inst);
1615 // If this is the end of the list, we're done.
1616 } while (EatIfPresent(lltok::comma));
1620 /// ParseOptionalFunctionMetadata
1622 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1623 while (Lex.getKind() == lltok::MetadataVar) {
1626 if (ParseMetadataAttachment(MDK, N))
1629 F.setMetadata(MDK, N);
1634 /// ParseOptionalAlignment
1637 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1639 if (!EatIfPresent(lltok::kw_align))
1641 LocTy AlignLoc = Lex.getLoc();
1642 if (ParseUInt32(Alignment)) return true;
1643 if (!isPowerOf2_32(Alignment))
1644 return Error(AlignLoc, "alignment is not a power of two");
1645 if (Alignment > Value::MaximumAlignment)
1646 return Error(AlignLoc, "huge alignments are not supported yet");
1650 /// ParseOptionalDerefAttrBytes
1652 /// ::= AttrKind '(' 4 ')'
1654 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1655 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1657 assert((AttrKind == lltok::kw_dereferenceable ||
1658 AttrKind == lltok::kw_dereferenceable_or_null) &&
1662 if (!EatIfPresent(AttrKind))
1664 LocTy ParenLoc = Lex.getLoc();
1665 if (!EatIfPresent(lltok::lparen))
1666 return Error(ParenLoc, "expected '('");
1667 LocTy DerefLoc = Lex.getLoc();
1668 if (ParseUInt64(Bytes)) return true;
1669 ParenLoc = Lex.getLoc();
1670 if (!EatIfPresent(lltok::rparen))
1671 return Error(ParenLoc, "expected ')'");
1673 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1677 /// ParseOptionalCommaAlign
1681 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1683 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1684 bool &AteExtraComma) {
1685 AteExtraComma = false;
1686 while (EatIfPresent(lltok::comma)) {
1687 // Metadata at the end is an early exit.
1688 if (Lex.getKind() == lltok::MetadataVar) {
1689 AteExtraComma = true;
1693 if (Lex.getKind() != lltok::kw_align)
1694 return Error(Lex.getLoc(), "expected metadata or 'align'");
1696 if (ParseOptionalAlignment(Alignment)) return true;
1702 /// ParseScopeAndOrdering
1703 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1706 /// This sets Scope and Ordering to the parsed values.
1707 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1708 AtomicOrdering &Ordering) {
1712 Scope = CrossThread;
1713 if (EatIfPresent(lltok::kw_singlethread))
1714 Scope = SingleThread;
1716 return ParseOrdering(Ordering);
1720 /// ::= AtomicOrdering
1722 /// This sets Ordering to the parsed value.
1723 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1724 switch (Lex.getKind()) {
1725 default: return TokError("Expected ordering on atomic instruction");
1726 case lltok::kw_unordered: Ordering = Unordered; break;
1727 case lltok::kw_monotonic: Ordering = Monotonic; break;
1728 case lltok::kw_acquire: Ordering = Acquire; break;
1729 case lltok::kw_release: Ordering = Release; break;
1730 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1731 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1737 /// ParseOptionalStackAlignment
1739 /// ::= 'alignstack' '(' 4 ')'
1740 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1742 if (!EatIfPresent(lltok::kw_alignstack))
1744 LocTy ParenLoc = Lex.getLoc();
1745 if (!EatIfPresent(lltok::lparen))
1746 return Error(ParenLoc, "expected '('");
1747 LocTy AlignLoc = Lex.getLoc();
1748 if (ParseUInt32(Alignment)) return true;
1749 ParenLoc = Lex.getLoc();
1750 if (!EatIfPresent(lltok::rparen))
1751 return Error(ParenLoc, "expected ')'");
1752 if (!isPowerOf2_32(Alignment))
1753 return Error(AlignLoc, "stack alignment is not a power of two");
1757 /// ParseIndexList - This parses the index list for an insert/extractvalue
1758 /// instruction. This sets AteExtraComma in the case where we eat an extra
1759 /// comma at the end of the line and find that it is followed by metadata.
1760 /// Clients that don't allow metadata can call the version of this function that
1761 /// only takes one argument.
1764 /// ::= (',' uint32)+
1766 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1767 bool &AteExtraComma) {
1768 AteExtraComma = false;
1770 if (Lex.getKind() != lltok::comma)
1771 return TokError("expected ',' as start of index list");
1773 while (EatIfPresent(lltok::comma)) {
1774 if (Lex.getKind() == lltok::MetadataVar) {
1775 if (Indices.empty()) return TokError("expected index");
1776 AteExtraComma = true;
1780 if (ParseUInt32(Idx)) return true;
1781 Indices.push_back(Idx);
1787 //===----------------------------------------------------------------------===//
1789 //===----------------------------------------------------------------------===//
1791 /// ParseType - Parse a type.
1792 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1793 SMLoc TypeLoc = Lex.getLoc();
1794 switch (Lex.getKind()) {
1796 return TokError(Msg);
1798 // Type ::= 'float' | 'void' (etc)
1799 Result = Lex.getTyVal();
1803 // Type ::= StructType
1804 if (ParseAnonStructType(Result, false))
1807 case lltok::lsquare:
1808 // Type ::= '[' ... ']'
1809 Lex.Lex(); // eat the lsquare.
1810 if (ParseArrayVectorType(Result, false))
1813 case lltok::less: // Either vector or packed struct.
1814 // Type ::= '<' ... '>'
1816 if (Lex.getKind() == lltok::lbrace) {
1817 if (ParseAnonStructType(Result, true) ||
1818 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1820 } else if (ParseArrayVectorType(Result, true))
1823 case lltok::LocalVar: {
1825 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1827 // If the type hasn't been defined yet, create a forward definition and
1828 // remember where that forward def'n was seen (in case it never is defined).
1830 Entry.first = StructType::create(Context, Lex.getStrVal());
1831 Entry.second = Lex.getLoc();
1833 Result = Entry.first;
1838 case lltok::LocalVarID: {
1840 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1842 // If the type hasn't been defined yet, create a forward definition and
1843 // remember where that forward def'n was seen (in case it never is defined).
1845 Entry.first = StructType::create(Context);
1846 Entry.second = Lex.getLoc();
1848 Result = Entry.first;
1854 // Parse the type suffixes.
1856 switch (Lex.getKind()) {
1859 if (!AllowVoid && Result->isVoidTy())
1860 return Error(TypeLoc, "void type only allowed for function results");
1863 // Type ::= Type '*'
1865 if (Result->isLabelTy())
1866 return TokError("basic block pointers are invalid");
1867 if (Result->isVoidTy())
1868 return TokError("pointers to void are invalid - use i8* instead");
1869 if (!PointerType::isValidElementType(Result))
1870 return TokError("pointer to this type is invalid");
1871 Result = PointerType::getUnqual(Result);
1875 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1876 case lltok::kw_addrspace: {
1877 if (Result->isLabelTy())
1878 return TokError("basic block pointers are invalid");
1879 if (Result->isVoidTy())
1880 return TokError("pointers to void are invalid; use i8* instead");
1881 if (!PointerType::isValidElementType(Result))
1882 return TokError("pointer to this type is invalid");
1884 if (ParseOptionalAddrSpace(AddrSpace) ||
1885 ParseToken(lltok::star, "expected '*' in address space"))
1888 Result = PointerType::get(Result, AddrSpace);
1892 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1894 if (ParseFunctionType(Result))
1901 /// ParseParameterList
1903 /// ::= '(' Arg (',' Arg)* ')'
1905 /// ::= Type OptionalAttributes Value OptionalAttributes
1906 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1907 PerFunctionState &PFS, bool IsMustTailCall,
1908 bool InVarArgsFunc) {
1909 if (ParseToken(lltok::lparen, "expected '(' in call"))
1912 unsigned AttrIndex = 1;
1913 while (Lex.getKind() != lltok::rparen) {
1914 // If this isn't the first argument, we need a comma.
1915 if (!ArgList.empty() &&
1916 ParseToken(lltok::comma, "expected ',' in argument list"))
1919 // Parse an ellipsis if this is a musttail call in a variadic function.
1920 if (Lex.getKind() == lltok::dotdotdot) {
1921 const char *Msg = "unexpected ellipsis in argument list for ";
1922 if (!IsMustTailCall)
1923 return TokError(Twine(Msg) + "non-musttail call");
1925 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1926 Lex.Lex(); // Lex the '...', it is purely for readability.
1927 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1930 // Parse the argument.
1932 Type *ArgTy = nullptr;
1933 AttrBuilder ArgAttrs;
1935 if (ParseType(ArgTy, ArgLoc))
1938 if (ArgTy->isMetadataTy()) {
1939 if (ParseMetadataAsValue(V, PFS))
1942 // Otherwise, handle normal operands.
1943 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1946 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1951 if (IsMustTailCall && InVarArgsFunc)
1952 return TokError("expected '...' at end of argument list for musttail call "
1953 "in varargs function");
1955 Lex.Lex(); // Lex the ')'.
1959 /// ParseOptionalOperandBundles
1961 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
1964 /// ::= bundle-tag '(' ')'
1965 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
1967 /// bundle-tag ::= String Constant
1968 bool LLParser::ParseOptionalOperandBundles(
1969 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
1970 LocTy BeginLoc = Lex.getLoc();
1971 if (!EatIfPresent(lltok::lsquare))
1974 while (Lex.getKind() != lltok::rsquare) {
1975 // If this isn't the first operand bundle, we need a comma.
1976 if (!BundleList.empty() &&
1977 ParseToken(lltok::comma, "expected ',' in input list"))
1981 if (ParseStringConstant(Tag))
1984 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
1987 std::vector<Value *> Inputs;
1988 while (Lex.getKind() != lltok::rparen) {
1989 // If this isn't the first input, we need a comma.
1990 if (!Inputs.empty() &&
1991 ParseToken(lltok::comma, "expected ',' in input list"))
1995 Value *Input = nullptr;
1996 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
1998 Inputs.push_back(Input);
2001 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2003 Lex.Lex(); // Lex the ')'.
2006 if (BundleList.empty())
2007 return Error(BeginLoc, "operand bundle set must not be empty");
2009 Lex.Lex(); // Lex the ']'.
2013 /// ParseArgumentList - Parse the argument list for a function type or function
2015 /// ::= '(' ArgTypeListI ')'
2019 /// ::= ArgTypeList ',' '...'
2020 /// ::= ArgType (',' ArgType)*
2022 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2025 assert(Lex.getKind() == lltok::lparen);
2026 Lex.Lex(); // eat the (.
2028 if (Lex.getKind() == lltok::rparen) {
2030 } else if (Lex.getKind() == lltok::dotdotdot) {
2034 LocTy TypeLoc = Lex.getLoc();
2035 Type *ArgTy = nullptr;
2039 if (ParseType(ArgTy) ||
2040 ParseOptionalParamAttrs(Attrs)) return true;
2042 if (ArgTy->isVoidTy())
2043 return Error(TypeLoc, "argument can not have void type");
2045 if (Lex.getKind() == lltok::LocalVar) {
2046 Name = Lex.getStrVal();
2050 if (!FunctionType::isValidArgumentType(ArgTy))
2051 return Error(TypeLoc, "invalid type for function argument");
2053 unsigned AttrIndex = 1;
2054 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2055 AttrIndex++, Attrs),
2058 while (EatIfPresent(lltok::comma)) {
2059 // Handle ... at end of arg list.
2060 if (EatIfPresent(lltok::dotdotdot)) {
2065 // Otherwise must be an argument type.
2066 TypeLoc = Lex.getLoc();
2067 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2069 if (ArgTy->isVoidTy())
2070 return Error(TypeLoc, "argument can not have void type");
2072 if (Lex.getKind() == lltok::LocalVar) {
2073 Name = Lex.getStrVal();
2079 if (!ArgTy->isFirstClassType())
2080 return Error(TypeLoc, "invalid type for function argument");
2082 ArgList.emplace_back(
2084 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2089 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2092 /// ParseFunctionType
2093 /// ::= Type ArgumentList OptionalAttrs
2094 bool LLParser::ParseFunctionType(Type *&Result) {
2095 assert(Lex.getKind() == lltok::lparen);
2097 if (!FunctionType::isValidReturnType(Result))
2098 return TokError("invalid function return type");
2100 SmallVector<ArgInfo, 8> ArgList;
2102 if (ParseArgumentList(ArgList, isVarArg))
2105 // Reject names on the arguments lists.
2106 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2107 if (!ArgList[i].Name.empty())
2108 return Error(ArgList[i].Loc, "argument name invalid in function type");
2109 if (ArgList[i].Attrs.hasAttributes(i + 1))
2110 return Error(ArgList[i].Loc,
2111 "argument attributes invalid in function type");
2114 SmallVector<Type*, 16> ArgListTy;
2115 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2116 ArgListTy.push_back(ArgList[i].Ty);
2118 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2122 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2124 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2125 SmallVector<Type*, 8> Elts;
2126 if (ParseStructBody(Elts)) return true;
2128 Result = StructType::get(Context, Elts, Packed);
2132 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2133 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2134 std::pair<Type*, LocTy> &Entry,
2136 // If the type was already defined, diagnose the redefinition.
2137 if (Entry.first && !Entry.second.isValid())
2138 return Error(TypeLoc, "redefinition of type");
2140 // If we have opaque, just return without filling in the definition for the
2141 // struct. This counts as a definition as far as the .ll file goes.
2142 if (EatIfPresent(lltok::kw_opaque)) {
2143 // This type is being defined, so clear the location to indicate this.
2144 Entry.second = SMLoc();
2146 // If this type number has never been uttered, create it.
2148 Entry.first = StructType::create(Context, Name);
2149 ResultTy = Entry.first;
2153 // If the type starts with '<', then it is either a packed struct or a vector.
2154 bool isPacked = EatIfPresent(lltok::less);
2156 // If we don't have a struct, then we have a random type alias, which we
2157 // accept for compatibility with old files. These types are not allowed to be
2158 // forward referenced and not allowed to be recursive.
2159 if (Lex.getKind() != lltok::lbrace) {
2161 return Error(TypeLoc, "forward references to non-struct type");
2165 return ParseArrayVectorType(ResultTy, true);
2166 return ParseType(ResultTy);
2169 // This type is being defined, so clear the location to indicate this.
2170 Entry.second = SMLoc();
2172 // If this type number has never been uttered, create it.
2174 Entry.first = StructType::create(Context, Name);
2176 StructType *STy = cast<StructType>(Entry.first);
2178 SmallVector<Type*, 8> Body;
2179 if (ParseStructBody(Body) ||
2180 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2183 STy->setBody(Body, isPacked);
2189 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2192 /// ::= '{' Type (',' Type)* '}'
2193 /// ::= '<' '{' '}' '>'
2194 /// ::= '<' '{' Type (',' Type)* '}' '>'
2195 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2196 assert(Lex.getKind() == lltok::lbrace);
2197 Lex.Lex(); // Consume the '{'
2199 // Handle the empty struct.
2200 if (EatIfPresent(lltok::rbrace))
2203 LocTy EltTyLoc = Lex.getLoc();
2205 if (ParseType(Ty)) return true;
2208 if (!StructType::isValidElementType(Ty))
2209 return Error(EltTyLoc, "invalid element type for struct");
2211 while (EatIfPresent(lltok::comma)) {
2212 EltTyLoc = Lex.getLoc();
2213 if (ParseType(Ty)) return true;
2215 if (!StructType::isValidElementType(Ty))
2216 return Error(EltTyLoc, "invalid element type for struct");
2221 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2224 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2225 /// token has already been consumed.
2227 /// ::= '[' APSINTVAL 'x' Types ']'
2228 /// ::= '<' APSINTVAL 'x' Types '>'
2229 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2230 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2231 Lex.getAPSIntVal().getBitWidth() > 64)
2232 return TokError("expected number in address space");
2234 LocTy SizeLoc = Lex.getLoc();
2235 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2238 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2241 LocTy TypeLoc = Lex.getLoc();
2242 Type *EltTy = nullptr;
2243 if (ParseType(EltTy)) return true;
2245 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2246 "expected end of sequential type"))
2251 return Error(SizeLoc, "zero element vector is illegal");
2252 if ((unsigned)Size != Size)
2253 return Error(SizeLoc, "size too large for vector");
2254 if (!VectorType::isValidElementType(EltTy))
2255 return Error(TypeLoc, "invalid vector element type");
2256 Result = VectorType::get(EltTy, unsigned(Size));
2258 if (!ArrayType::isValidElementType(EltTy))
2259 return Error(TypeLoc, "invalid array element type");
2260 Result = ArrayType::get(EltTy, Size);
2265 //===----------------------------------------------------------------------===//
2266 // Function Semantic Analysis.
2267 //===----------------------------------------------------------------------===//
2269 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2271 : P(p), F(f), FunctionNumber(functionNumber) {
2273 // Insert unnamed arguments into the NumberedVals list.
2274 for (Argument &A : F.args())
2276 NumberedVals.push_back(&A);
2279 LLParser::PerFunctionState::~PerFunctionState() {
2280 // If there were any forward referenced non-basicblock values, delete them.
2282 for (const auto &P : ForwardRefVals) {
2283 if (isa<BasicBlock>(P.second.first))
2285 P.second.first->replaceAllUsesWith(
2286 UndefValue::get(P.second.first->getType()));
2287 delete P.second.first;
2290 for (const auto &P : ForwardRefValIDs) {
2291 if (isa<BasicBlock>(P.second.first))
2293 P.second.first->replaceAllUsesWith(
2294 UndefValue::get(P.second.first->getType()));
2295 delete P.second.first;
2299 bool LLParser::PerFunctionState::FinishFunction() {
2300 if (!ForwardRefVals.empty())
2301 return P.Error(ForwardRefVals.begin()->second.second,
2302 "use of undefined value '%" + ForwardRefVals.begin()->first +
2304 if (!ForwardRefValIDs.empty())
2305 return P.Error(ForwardRefValIDs.begin()->second.second,
2306 "use of undefined value '%" +
2307 Twine(ForwardRefValIDs.begin()->first) + "'");
2312 /// GetVal - Get a value with the specified name or ID, creating a
2313 /// forward reference record if needed. This can return null if the value
2314 /// exists but does not have the right type.
2315 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2316 LocTy Loc, OperatorConstraint OC) {
2317 // Look this name up in the normal function symbol table.
2318 Value *Val = F.getValueSymbolTable().lookup(Name);
2320 // If this is a forward reference for the value, see if we already created a
2321 // forward ref record.
2323 auto I = ForwardRefVals.find(Name);
2324 if (I != ForwardRefVals.end())
2325 Val = I->second.first;
2328 // If we have the value in the symbol table or fwd-ref table, return it.
2330 // Check operator constraints.
2336 if (!isa<CatchPadInst>(Val)) {
2337 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2342 if (!isa<CleanupPadInst>(Val)) {
2343 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2348 if (Val->getType() == Ty) return Val;
2349 if (Ty->isLabelTy())
2350 P.Error(Loc, "'%" + Name + "' is not a basic block");
2352 P.Error(Loc, "'%" + Name + "' defined with type '" +
2353 getTypeString(Val->getType()) + "'");
2357 // Don't make placeholders with invalid type.
2358 if (!Ty->isFirstClassType()) {
2359 P.Error(Loc, "invalid use of a non-first-class type");
2363 // Otherwise, create a new forward reference for this value and remember it.
2365 if (Ty->isLabelTy()) {
2367 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2369 FwdVal = new Argument(Ty, Name);
2373 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2377 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2380 llvm_unreachable("unexpected constraint");
2384 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2388 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2389 OperatorConstraint OC) {
2390 // Look this name up in the normal function symbol table.
2391 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2393 // If this is a forward reference for the value, see if we already created a
2394 // forward ref record.
2396 auto I = ForwardRefValIDs.find(ID);
2397 if (I != ForwardRefValIDs.end())
2398 Val = I->second.first;
2401 // If we have the value in the symbol table or fwd-ref table, return it.
2403 // Check operator constraint.
2409 if (!isa<CatchPadInst>(Val)) {
2410 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2415 if (!isa<CleanupPadInst>(Val)) {
2416 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2421 if (Val->getType() == Ty) return Val;
2422 if (Ty->isLabelTy())
2423 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2425 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2426 getTypeString(Val->getType()) + "'");
2430 if (!Ty->isFirstClassType()) {
2431 P.Error(Loc, "invalid use of a non-first-class type");
2435 // Otherwise, create a new forward reference for this value and remember it.
2437 if (Ty->isLabelTy()) {
2439 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2441 FwdVal = new Argument(Ty);
2445 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2448 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2451 llvm_unreachable("unexpected constraint");
2455 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2459 /// SetInstName - After an instruction is parsed and inserted into its
2460 /// basic block, this installs its name.
2461 bool LLParser::PerFunctionState::SetInstName(int NameID,
2462 const std::string &NameStr,
2463 LocTy NameLoc, Instruction *Inst) {
2464 // If this instruction has void type, it cannot have a name or ID specified.
2465 if (Inst->getType()->isVoidTy()) {
2466 if (NameID != -1 || !NameStr.empty())
2467 return P.Error(NameLoc, "instructions returning void cannot have a name");
2471 // If this was a numbered instruction, verify that the instruction is the
2472 // expected value and resolve any forward references.
2473 if (NameStr.empty()) {
2474 // If neither a name nor an ID was specified, just use the next ID.
2476 NameID = NumberedVals.size();
2478 if (unsigned(NameID) != NumberedVals.size())
2479 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2480 Twine(NumberedVals.size()) + "'");
2482 auto FI = ForwardRefValIDs.find(NameID);
2483 if (FI != ForwardRefValIDs.end()) {
2484 Value *Sentinel = FI->second.first;
2485 if (Sentinel->getType() != Inst->getType())
2486 return P.Error(NameLoc, "instruction forward referenced with type '" +
2487 getTypeString(FI->second.first->getType()) + "'");
2488 // Check operator constraints. We only put cleanuppads or catchpads in
2489 // the forward value map if the value is constrained to match.
2490 if (isa<CatchPadInst>(Sentinel)) {
2491 if (!isa<CatchPadInst>(Inst))
2492 return P.Error(FI->second.second,
2493 "'%" + Twine(NameID) + "' is not a catchpad");
2494 } else if (isa<CleanupPadInst>(Sentinel)) {
2495 if (!isa<CleanupPadInst>(Inst))
2496 return P.Error(FI->second.second,
2497 "'%" + Twine(NameID) + "' is not a cleanuppad");
2500 Sentinel->replaceAllUsesWith(Inst);
2502 ForwardRefValIDs.erase(FI);
2505 NumberedVals.push_back(Inst);
2509 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2510 auto FI = ForwardRefVals.find(NameStr);
2511 if (FI != ForwardRefVals.end()) {
2512 Value *Sentinel = FI->second.first;
2513 if (Sentinel->getType() != Inst->getType())
2514 return P.Error(NameLoc, "instruction forward referenced with type '" +
2515 getTypeString(FI->second.first->getType()) + "'");
2516 // Check operator constraints. We only put cleanuppads or catchpads in
2517 // the forward value map if the value is constrained to match.
2518 if (isa<CatchPadInst>(Sentinel)) {
2519 if (!isa<CatchPadInst>(Inst))
2520 return P.Error(FI->second.second,
2521 "'%" + NameStr + "' is not a catchpad");
2522 } else if (isa<CleanupPadInst>(Sentinel)) {
2523 if (!isa<CleanupPadInst>(Inst))
2524 return P.Error(FI->second.second,
2525 "'%" + NameStr + "' is not a cleanuppad");
2528 Sentinel->replaceAllUsesWith(Inst);
2530 ForwardRefVals.erase(FI);
2533 // Set the name on the instruction.
2534 Inst->setName(NameStr);
2536 if (Inst->getName() != NameStr)
2537 return P.Error(NameLoc, "multiple definition of local value named '" +
2542 /// GetBB - Get a basic block with the specified name or ID, creating a
2543 /// forward reference record if needed.
2544 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2546 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2547 Type::getLabelTy(F.getContext()), Loc));
2550 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2551 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2552 Type::getLabelTy(F.getContext()), Loc));
2555 /// DefineBB - Define the specified basic block, which is either named or
2556 /// unnamed. If there is an error, this returns null otherwise it returns
2557 /// the block being defined.
2558 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2562 BB = GetBB(NumberedVals.size(), Loc);
2564 BB = GetBB(Name, Loc);
2565 if (!BB) return nullptr; // Already diagnosed error.
2567 // Move the block to the end of the function. Forward ref'd blocks are
2568 // inserted wherever they happen to be referenced.
2569 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2571 // Remove the block from forward ref sets.
2573 ForwardRefValIDs.erase(NumberedVals.size());
2574 NumberedVals.push_back(BB);
2576 // BB forward references are already in the function symbol table.
2577 ForwardRefVals.erase(Name);
2583 //===----------------------------------------------------------------------===//
2585 //===----------------------------------------------------------------------===//
2587 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2588 /// type implied. For example, if we parse "4" we don't know what integer type
2589 /// it has. The value will later be combined with its type and checked for
2590 /// sanity. PFS is used to convert function-local operands of metadata (since
2591 /// metadata operands are not just parsed here but also converted to values).
2592 /// PFS can be null when we are not parsing metadata values inside a function.
2593 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2594 ID.Loc = Lex.getLoc();
2595 switch (Lex.getKind()) {
2596 default: return TokError("expected value token");
2597 case lltok::GlobalID: // @42
2598 ID.UIntVal = Lex.getUIntVal();
2599 ID.Kind = ValID::t_GlobalID;
2601 case lltok::GlobalVar: // @foo
2602 ID.StrVal = Lex.getStrVal();
2603 ID.Kind = ValID::t_GlobalName;
2605 case lltok::LocalVarID: // %42
2606 ID.UIntVal = Lex.getUIntVal();
2607 ID.Kind = ValID::t_LocalID;
2609 case lltok::LocalVar: // %foo
2610 ID.StrVal = Lex.getStrVal();
2611 ID.Kind = ValID::t_LocalName;
2614 ID.APSIntVal = Lex.getAPSIntVal();
2615 ID.Kind = ValID::t_APSInt;
2617 case lltok::APFloat:
2618 ID.APFloatVal = Lex.getAPFloatVal();
2619 ID.Kind = ValID::t_APFloat;
2621 case lltok::kw_true:
2622 ID.ConstantVal = ConstantInt::getTrue(Context);
2623 ID.Kind = ValID::t_Constant;
2625 case lltok::kw_false:
2626 ID.ConstantVal = ConstantInt::getFalse(Context);
2627 ID.Kind = ValID::t_Constant;
2629 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2630 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2631 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2632 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2634 case lltok::lbrace: {
2635 // ValID ::= '{' ConstVector '}'
2637 SmallVector<Constant*, 16> Elts;
2638 if (ParseGlobalValueVector(Elts) ||
2639 ParseToken(lltok::rbrace, "expected end of struct constant"))
2642 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2643 ID.UIntVal = Elts.size();
2644 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2645 Elts.size() * sizeof(Elts[0]));
2646 ID.Kind = ValID::t_ConstantStruct;
2650 // ValID ::= '<' ConstVector '>' --> Vector.
2651 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2653 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2655 SmallVector<Constant*, 16> Elts;
2656 LocTy FirstEltLoc = Lex.getLoc();
2657 if (ParseGlobalValueVector(Elts) ||
2659 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2660 ParseToken(lltok::greater, "expected end of constant"))
2663 if (isPackedStruct) {
2664 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2665 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2666 Elts.size() * sizeof(Elts[0]));
2667 ID.UIntVal = Elts.size();
2668 ID.Kind = ValID::t_PackedConstantStruct;
2673 return Error(ID.Loc, "constant vector must not be empty");
2675 if (!Elts[0]->getType()->isIntegerTy() &&
2676 !Elts[0]->getType()->isFloatingPointTy() &&
2677 !Elts[0]->getType()->isPointerTy())
2678 return Error(FirstEltLoc,
2679 "vector elements must have integer, pointer or floating point type");
2681 // Verify that all the vector elements have the same type.
2682 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2683 if (Elts[i]->getType() != Elts[0]->getType())
2684 return Error(FirstEltLoc,
2685 "vector element #" + Twine(i) +
2686 " is not of type '" + getTypeString(Elts[0]->getType()));
2688 ID.ConstantVal = ConstantVector::get(Elts);
2689 ID.Kind = ValID::t_Constant;
2692 case lltok::lsquare: { // Array Constant
2694 SmallVector<Constant*, 16> Elts;
2695 LocTy FirstEltLoc = Lex.getLoc();
2696 if (ParseGlobalValueVector(Elts) ||
2697 ParseToken(lltok::rsquare, "expected end of array constant"))
2700 // Handle empty element.
2702 // Use undef instead of an array because it's inconvenient to determine
2703 // the element type at this point, there being no elements to examine.
2704 ID.Kind = ValID::t_EmptyArray;
2708 if (!Elts[0]->getType()->isFirstClassType())
2709 return Error(FirstEltLoc, "invalid array element type: " +
2710 getTypeString(Elts[0]->getType()));
2712 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2714 // Verify all elements are correct type!
2715 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2716 if (Elts[i]->getType() != Elts[0]->getType())
2717 return Error(FirstEltLoc,
2718 "array element #" + Twine(i) +
2719 " is not of type '" + getTypeString(Elts[0]->getType()));
2722 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2723 ID.Kind = ValID::t_Constant;
2726 case lltok::kw_c: // c "foo"
2728 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2730 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2731 ID.Kind = ValID::t_Constant;
2734 case lltok::kw_asm: {
2735 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2737 bool HasSideEffect, AlignStack, AsmDialect;
2739 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2740 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2741 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2742 ParseStringConstant(ID.StrVal) ||
2743 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2744 ParseToken(lltok::StringConstant, "expected constraint string"))
2746 ID.StrVal2 = Lex.getStrVal();
2747 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2748 (unsigned(AsmDialect)<<2);
2749 ID.Kind = ValID::t_InlineAsm;
2753 case lltok::kw_blockaddress: {
2754 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2759 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2761 ParseToken(lltok::comma, "expected comma in block address expression")||
2762 ParseValID(Label) ||
2763 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2766 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2767 return Error(Fn.Loc, "expected function name in blockaddress");
2768 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2769 return Error(Label.Loc, "expected basic block name in blockaddress");
2771 // Try to find the function (but skip it if it's forward-referenced).
2772 GlobalValue *GV = nullptr;
2773 if (Fn.Kind == ValID::t_GlobalID) {
2774 if (Fn.UIntVal < NumberedVals.size())
2775 GV = NumberedVals[Fn.UIntVal];
2776 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2777 GV = M->getNamedValue(Fn.StrVal);
2779 Function *F = nullptr;
2781 // Confirm that it's actually a function with a definition.
2782 if (!isa<Function>(GV))
2783 return Error(Fn.Loc, "expected function name in blockaddress");
2784 F = cast<Function>(GV);
2785 if (F->isDeclaration())
2786 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2790 // Make a global variable as a placeholder for this reference.
2791 GlobalValue *&FwdRef =
2792 ForwardRefBlockAddresses.insert(std::make_pair(
2794 std::map<ValID, GlobalValue *>()))
2795 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2798 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2799 GlobalValue::InternalLinkage, nullptr, "");
2800 ID.ConstantVal = FwdRef;
2801 ID.Kind = ValID::t_Constant;
2805 // We found the function; now find the basic block. Don't use PFS, since we
2806 // might be inside a constant expression.
2808 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2809 if (Label.Kind == ValID::t_LocalID)
2810 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2812 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2814 return Error(Label.Loc, "referenced value is not a basic block");
2816 if (Label.Kind == ValID::t_LocalID)
2817 return Error(Label.Loc, "cannot take address of numeric label after "
2818 "the function is defined");
2819 BB = dyn_cast_or_null<BasicBlock>(
2820 F->getValueSymbolTable().lookup(Label.StrVal));
2822 return Error(Label.Loc, "referenced value is not a basic block");
2825 ID.ConstantVal = BlockAddress::get(F, BB);
2826 ID.Kind = ValID::t_Constant;
2830 case lltok::kw_trunc:
2831 case lltok::kw_zext:
2832 case lltok::kw_sext:
2833 case lltok::kw_fptrunc:
2834 case lltok::kw_fpext:
2835 case lltok::kw_bitcast:
2836 case lltok::kw_addrspacecast:
2837 case lltok::kw_uitofp:
2838 case lltok::kw_sitofp:
2839 case lltok::kw_fptoui:
2840 case lltok::kw_fptosi:
2841 case lltok::kw_inttoptr:
2842 case lltok::kw_ptrtoint: {
2843 unsigned Opc = Lex.getUIntVal();
2844 Type *DestTy = nullptr;
2847 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2848 ParseGlobalTypeAndValue(SrcVal) ||
2849 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2850 ParseType(DestTy) ||
2851 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2853 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2854 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2855 getTypeString(SrcVal->getType()) + "' to '" +
2856 getTypeString(DestTy) + "'");
2857 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2859 ID.Kind = ValID::t_Constant;
2862 case lltok::kw_extractvalue: {
2865 SmallVector<unsigned, 4> Indices;
2866 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2867 ParseGlobalTypeAndValue(Val) ||
2868 ParseIndexList(Indices) ||
2869 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2872 if (!Val->getType()->isAggregateType())
2873 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2874 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2875 return Error(ID.Loc, "invalid indices for extractvalue");
2876 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2877 ID.Kind = ValID::t_Constant;
2880 case lltok::kw_insertvalue: {
2882 Constant *Val0, *Val1;
2883 SmallVector<unsigned, 4> Indices;
2884 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2885 ParseGlobalTypeAndValue(Val0) ||
2886 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2887 ParseGlobalTypeAndValue(Val1) ||
2888 ParseIndexList(Indices) ||
2889 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2891 if (!Val0->getType()->isAggregateType())
2892 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2894 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2896 return Error(ID.Loc, "invalid indices for insertvalue");
2897 if (IndexedType != Val1->getType())
2898 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2899 getTypeString(Val1->getType()) +
2900 "' instead of '" + getTypeString(IndexedType) +
2902 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2903 ID.Kind = ValID::t_Constant;
2906 case lltok::kw_icmp:
2907 case lltok::kw_fcmp: {
2908 unsigned PredVal, Opc = Lex.getUIntVal();
2909 Constant *Val0, *Val1;
2911 if (ParseCmpPredicate(PredVal, Opc) ||
2912 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2913 ParseGlobalTypeAndValue(Val0) ||
2914 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2915 ParseGlobalTypeAndValue(Val1) ||
2916 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2919 if (Val0->getType() != Val1->getType())
2920 return Error(ID.Loc, "compare operands must have the same type");
2922 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2924 if (Opc == Instruction::FCmp) {
2925 if (!Val0->getType()->isFPOrFPVectorTy())
2926 return Error(ID.Loc, "fcmp requires floating point operands");
2927 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2929 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2930 if (!Val0->getType()->isIntOrIntVectorTy() &&
2931 !Val0->getType()->getScalarType()->isPointerTy())
2932 return Error(ID.Loc, "icmp requires pointer or integer operands");
2933 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2935 ID.Kind = ValID::t_Constant;
2939 // Binary Operators.
2941 case lltok::kw_fadd:
2943 case lltok::kw_fsub:
2945 case lltok::kw_fmul:
2946 case lltok::kw_udiv:
2947 case lltok::kw_sdiv:
2948 case lltok::kw_fdiv:
2949 case lltok::kw_urem:
2950 case lltok::kw_srem:
2951 case lltok::kw_frem:
2953 case lltok::kw_lshr:
2954 case lltok::kw_ashr: {
2958 unsigned Opc = Lex.getUIntVal();
2959 Constant *Val0, *Val1;
2961 LocTy ModifierLoc = Lex.getLoc();
2962 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2963 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2964 if (EatIfPresent(lltok::kw_nuw))
2966 if (EatIfPresent(lltok::kw_nsw)) {
2968 if (EatIfPresent(lltok::kw_nuw))
2971 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2972 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2973 if (EatIfPresent(lltok::kw_exact))
2976 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2977 ParseGlobalTypeAndValue(Val0) ||
2978 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2979 ParseGlobalTypeAndValue(Val1) ||
2980 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2982 if (Val0->getType() != Val1->getType())
2983 return Error(ID.Loc, "operands of constexpr must have same type");
2984 if (!Val0->getType()->isIntOrIntVectorTy()) {
2986 return Error(ModifierLoc, "nuw only applies to integer operations");
2988 return Error(ModifierLoc, "nsw only applies to integer operations");
2990 // Check that the type is valid for the operator.
2992 case Instruction::Add:
2993 case Instruction::Sub:
2994 case Instruction::Mul:
2995 case Instruction::UDiv:
2996 case Instruction::SDiv:
2997 case Instruction::URem:
2998 case Instruction::SRem:
2999 case Instruction::Shl:
3000 case Instruction::AShr:
3001 case Instruction::LShr:
3002 if (!Val0->getType()->isIntOrIntVectorTy())
3003 return Error(ID.Loc, "constexpr requires integer operands");
3005 case Instruction::FAdd:
3006 case Instruction::FSub:
3007 case Instruction::FMul:
3008 case Instruction::FDiv:
3009 case Instruction::FRem:
3010 if (!Val0->getType()->isFPOrFPVectorTy())
3011 return Error(ID.Loc, "constexpr requires fp operands");
3013 default: llvm_unreachable("Unknown binary operator!");
3016 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3017 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3018 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3019 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3021 ID.Kind = ValID::t_Constant;
3025 // Logical Operations
3028 case lltok::kw_xor: {
3029 unsigned Opc = Lex.getUIntVal();
3030 Constant *Val0, *Val1;
3032 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3033 ParseGlobalTypeAndValue(Val0) ||
3034 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3035 ParseGlobalTypeAndValue(Val1) ||
3036 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3038 if (Val0->getType() != Val1->getType())
3039 return Error(ID.Loc, "operands of constexpr must have same type");
3040 if (!Val0->getType()->isIntOrIntVectorTy())
3041 return Error(ID.Loc,
3042 "constexpr requires integer or integer vector operands");
3043 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3044 ID.Kind = ValID::t_Constant;
3048 case lltok::kw_getelementptr:
3049 case lltok::kw_shufflevector:
3050 case lltok::kw_insertelement:
3051 case lltok::kw_extractelement:
3052 case lltok::kw_select: {
3053 unsigned Opc = Lex.getUIntVal();
3054 SmallVector<Constant*, 16> Elts;
3055 bool InBounds = false;
3059 if (Opc == Instruction::GetElementPtr)
3060 InBounds = EatIfPresent(lltok::kw_inbounds);
3062 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3065 LocTy ExplicitTypeLoc = Lex.getLoc();
3066 if (Opc == Instruction::GetElementPtr) {
3067 if (ParseType(Ty) ||
3068 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3072 if (ParseGlobalValueVector(Elts) ||
3073 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3076 if (Opc == Instruction::GetElementPtr) {
3077 if (Elts.size() == 0 ||
3078 !Elts[0]->getType()->getScalarType()->isPointerTy())
3079 return Error(ID.Loc, "base of getelementptr must be a pointer");
3081 Type *BaseType = Elts[0]->getType();
3082 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3083 if (Ty != BasePointerType->getElementType())
3086 "explicit pointee type doesn't match operand's pointee type");
3088 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3089 for (Constant *Val : Indices) {
3090 Type *ValTy = Val->getType();
3091 if (!ValTy->getScalarType()->isIntegerTy())
3092 return Error(ID.Loc, "getelementptr index must be an integer");
3093 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3094 return Error(ID.Loc, "getelementptr index type missmatch");
3095 if (ValTy->isVectorTy()) {
3096 unsigned ValNumEl = ValTy->getVectorNumElements();
3097 unsigned PtrNumEl = BaseType->getVectorNumElements();
3098 if (ValNumEl != PtrNumEl)
3101 "getelementptr vector index has a wrong number of elements");
3105 SmallPtrSet<Type*, 4> Visited;
3106 if (!Indices.empty() && !Ty->isSized(&Visited))
3107 return Error(ID.Loc, "base element of getelementptr must be sized");
3109 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3110 return Error(ID.Loc, "invalid getelementptr indices");
3112 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3113 } else if (Opc == Instruction::Select) {
3114 if (Elts.size() != 3)
3115 return Error(ID.Loc, "expected three operands to select");
3116 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3118 return Error(ID.Loc, Reason);
3119 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3120 } else if (Opc == Instruction::ShuffleVector) {
3121 if (Elts.size() != 3)
3122 return Error(ID.Loc, "expected three operands to shufflevector");
3123 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3124 return Error(ID.Loc, "invalid operands to shufflevector");
3126 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3127 } else if (Opc == Instruction::ExtractElement) {
3128 if (Elts.size() != 2)
3129 return Error(ID.Loc, "expected two operands to extractelement");
3130 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3131 return Error(ID.Loc, "invalid extractelement operands");
3132 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3134 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3135 if (Elts.size() != 3)
3136 return Error(ID.Loc, "expected three operands to insertelement");
3137 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3138 return Error(ID.Loc, "invalid insertelement operands");
3140 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3143 ID.Kind = ValID::t_Constant;
3152 /// ParseGlobalValue - Parse a global value with the specified type.
3153 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3157 bool Parsed = ParseValID(ID) ||
3158 ConvertValIDToValue(Ty, ID, V, nullptr);
3159 if (V && !(C = dyn_cast<Constant>(V)))
3160 return Error(ID.Loc, "global values must be constants");
3164 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3166 return ParseType(Ty) ||
3167 ParseGlobalValue(Ty, V);
3170 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3173 LocTy KwLoc = Lex.getLoc();
3174 if (!EatIfPresent(lltok::kw_comdat))
3177 if (EatIfPresent(lltok::lparen)) {
3178 if (Lex.getKind() != lltok::ComdatVar)
3179 return TokError("expected comdat variable");
3180 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3182 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3185 if (GlobalName.empty())
3186 return TokError("comdat cannot be unnamed");
3187 C = getComdat(GlobalName, KwLoc);
3193 /// ParseGlobalValueVector
3195 /// ::= TypeAndValue (',' TypeAndValue)*
3196 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3198 if (Lex.getKind() == lltok::rbrace ||
3199 Lex.getKind() == lltok::rsquare ||
3200 Lex.getKind() == lltok::greater ||
3201 Lex.getKind() == lltok::rparen)
3205 if (ParseGlobalTypeAndValue(C)) return true;
3208 while (EatIfPresent(lltok::comma)) {
3209 if (ParseGlobalTypeAndValue(C)) return true;
3216 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3217 SmallVector<Metadata *, 16> Elts;
3218 if (ParseMDNodeVector(Elts))
3221 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3228 /// ::= !DILocation(...)
3229 bool LLParser::ParseMDNode(MDNode *&N) {
3230 if (Lex.getKind() == lltok::MetadataVar)
3231 return ParseSpecializedMDNode(N);
3233 return ParseToken(lltok::exclaim, "expected '!' here") ||
3237 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3239 if (Lex.getKind() == lltok::lbrace)
3240 return ParseMDTuple(N);
3243 return ParseMDNodeID(N);
3248 /// Structure to represent an optional metadata field.
3249 template <class FieldTy> struct MDFieldImpl {
3250 typedef MDFieldImpl ImplTy;
3254 void assign(FieldTy Val) {
3256 this->Val = std::move(Val);
3259 explicit MDFieldImpl(FieldTy Default)
3260 : Val(std::move(Default)), Seen(false) {}
3263 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3266 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3267 : ImplTy(Default), Max(Max) {}
3269 struct LineField : public MDUnsignedField {
3270 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3272 struct ColumnField : public MDUnsignedField {
3273 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3275 struct DwarfTagField : public MDUnsignedField {
3276 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3277 DwarfTagField(dwarf::Tag DefaultTag)
3278 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3280 struct DwarfAttEncodingField : public MDUnsignedField {
3281 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3283 struct DwarfVirtualityField : public MDUnsignedField {
3284 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3286 struct DwarfLangField : public MDUnsignedField {
3287 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3290 struct DIFlagField : public MDUnsignedField {
3291 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3294 struct MDSignedField : public MDFieldImpl<int64_t> {
3298 MDSignedField(int64_t Default = 0)
3299 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3300 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3301 : ImplTy(Default), Min(Min), Max(Max) {}
3304 struct MDBoolField : public MDFieldImpl<bool> {
3305 MDBoolField(bool Default = false) : ImplTy(Default) {}
3307 struct MDField : public MDFieldImpl<Metadata *> {
3310 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3312 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3313 MDConstant() : ImplTy(nullptr) {}
3315 struct MDStringField : public MDFieldImpl<MDString *> {
3317 MDStringField(bool AllowEmpty = true)
3318 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3320 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3321 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3329 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3330 MDUnsignedField &Result) {
3331 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3332 return TokError("expected unsigned integer");
3334 auto &U = Lex.getAPSIntVal();
3335 if (U.ugt(Result.Max))
3336 return TokError("value for '" + Name + "' too large, limit is " +
3338 Result.assign(U.getZExtValue());
3339 assert(Result.Val <= Result.Max && "Expected value in range");
3345 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3346 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3349 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3350 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3354 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3355 if (Lex.getKind() == lltok::APSInt)
3356 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3358 if (Lex.getKind() != lltok::DwarfTag)
3359 return TokError("expected DWARF tag");
3361 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3362 if (Tag == dwarf::DW_TAG_invalid)
3363 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3364 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3372 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3373 DwarfVirtualityField &Result) {
3374 if (Lex.getKind() == lltok::APSInt)
3375 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3377 if (Lex.getKind() != lltok::DwarfVirtuality)
3378 return TokError("expected DWARF virtuality code");
3380 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3382 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3383 Lex.getStrVal() + "'");
3384 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3385 Result.assign(Virtuality);
3391 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3392 if (Lex.getKind() == lltok::APSInt)
3393 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3395 if (Lex.getKind() != lltok::DwarfLang)
3396 return TokError("expected DWARF language");
3398 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3400 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3402 assert(Lang <= Result.Max && "Expected valid DWARF language");
3403 Result.assign(Lang);
3409 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3410 DwarfAttEncodingField &Result) {
3411 if (Lex.getKind() == lltok::APSInt)
3412 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3414 if (Lex.getKind() != lltok::DwarfAttEncoding)
3415 return TokError("expected DWARF type attribute encoding");
3417 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3419 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3420 Lex.getStrVal() + "'");
3421 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3422 Result.assign(Encoding);
3429 /// ::= DIFlagVector
3430 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3432 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3433 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3435 // Parser for a single flag.
3436 auto parseFlag = [&](unsigned &Val) {
3437 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3438 return ParseUInt32(Val);
3440 if (Lex.getKind() != lltok::DIFlag)
3441 return TokError("expected debug info flag");
3443 Val = DINode::getFlag(Lex.getStrVal());
3445 return TokError(Twine("invalid debug info flag flag '") +
3446 Lex.getStrVal() + "'");
3451 // Parse the flags and combine them together.
3452 unsigned Combined = 0;
3458 } while (EatIfPresent(lltok::bar));
3460 Result.assign(Combined);
3465 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3466 MDSignedField &Result) {
3467 if (Lex.getKind() != lltok::APSInt)
3468 return TokError("expected signed integer");
3470 auto &S = Lex.getAPSIntVal();
3472 return TokError("value for '" + Name + "' too small, limit is " +
3475 return TokError("value for '" + Name + "' too large, limit is " +
3477 Result.assign(S.getExtValue());
3478 assert(Result.Val >= Result.Min && "Expected value in range");
3479 assert(Result.Val <= Result.Max && "Expected value in range");
3485 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3486 switch (Lex.getKind()) {
3488 return TokError("expected 'true' or 'false'");
3489 case lltok::kw_true:
3490 Result.assign(true);
3492 case lltok::kw_false:
3493 Result.assign(false);
3501 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3502 if (Lex.getKind() == lltok::kw_null) {
3503 if (!Result.AllowNull)
3504 return TokError("'" + Name + "' cannot be null");
3506 Result.assign(nullptr);
3511 if (ParseMetadata(MD, nullptr))
3519 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3521 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3524 Result.assign(cast<ConstantAsMetadata>(MD));
3529 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3530 LocTy ValueLoc = Lex.getLoc();
3532 if (ParseStringConstant(S))
3535 if (!Result.AllowEmpty && S.empty())
3536 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3538 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3543 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3544 SmallVector<Metadata *, 4> MDs;
3545 if (ParseMDNodeVector(MDs))
3548 Result.assign(std::move(MDs));
3552 } // end namespace llvm
3554 template <class ParserTy>
3555 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3557 if (Lex.getKind() != lltok::LabelStr)
3558 return TokError("expected field label here");
3562 } while (EatIfPresent(lltok::comma));
3567 template <class ParserTy>
3568 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3569 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3572 if (ParseToken(lltok::lparen, "expected '(' here"))
3574 if (Lex.getKind() != lltok::rparen)
3575 if (ParseMDFieldsImplBody(parseField))
3578 ClosingLoc = Lex.getLoc();
3579 return ParseToken(lltok::rparen, "expected ')' here");
3582 template <class FieldTy>
3583 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3585 return TokError("field '" + Name + "' cannot be specified more than once");
3587 LocTy Loc = Lex.getLoc();
3589 return ParseMDField(Loc, Name, Result);
3592 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3593 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3595 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3596 if (Lex.getStrVal() == #CLASS) \
3597 return Parse##CLASS(N, IsDistinct);
3598 #include "llvm/IR/Metadata.def"
3600 return TokError("expected metadata type");
3603 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3604 #define NOP_FIELD(NAME, TYPE, INIT)
3605 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3607 return Error(ClosingLoc, "missing required field '" #NAME "'");
3608 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3609 if (Lex.getStrVal() == #NAME) \
3610 return ParseMDField(#NAME, NAME);
3611 #define PARSE_MD_FIELDS() \
3612 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3615 if (ParseMDFieldsImpl([&]() -> bool { \
3616 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3617 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3620 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3622 #define GET_OR_DISTINCT(CLASS, ARGS) \
3623 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3625 /// ParseDILocationFields:
3626 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3627 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3628 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3629 OPTIONAL(line, LineField, ); \
3630 OPTIONAL(column, ColumnField, ); \
3631 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3632 OPTIONAL(inlinedAt, MDField, );
3634 #undef VISIT_MD_FIELDS
3636 Result = GET_OR_DISTINCT(
3637 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3641 /// ParseGenericDINode:
3642 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3643 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3644 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3645 REQUIRED(tag, DwarfTagField, ); \
3646 OPTIONAL(header, MDStringField, ); \
3647 OPTIONAL(operands, MDFieldList, );
3649 #undef VISIT_MD_FIELDS
3651 Result = GET_OR_DISTINCT(GenericDINode,
3652 (Context, tag.Val, header.Val, operands.Val));
3656 /// ParseDISubrange:
3657 /// ::= !DISubrange(count: 30, lowerBound: 2)
3658 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3659 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3660 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3661 OPTIONAL(lowerBound, MDSignedField, );
3663 #undef VISIT_MD_FIELDS
3665 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3669 /// ParseDIEnumerator:
3670 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3671 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3672 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3673 REQUIRED(name, MDStringField, ); \
3674 REQUIRED(value, MDSignedField, );
3676 #undef VISIT_MD_FIELDS
3678 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3682 /// ParseDIBasicType:
3683 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3684 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3685 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3686 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3687 OPTIONAL(name, MDStringField, ); \
3688 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3689 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3690 OPTIONAL(encoding, DwarfAttEncodingField, );
3692 #undef VISIT_MD_FIELDS
3694 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3695 align.Val, encoding.Val));
3699 /// ParseDIDerivedType:
3700 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3701 /// line: 7, scope: !1, baseType: !2, size: 32,
3702 /// align: 32, offset: 0, flags: 0, extraData: !3)
3703 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3704 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3705 REQUIRED(tag, DwarfTagField, ); \
3706 OPTIONAL(name, MDStringField, ); \
3707 OPTIONAL(file, MDField, ); \
3708 OPTIONAL(line, LineField, ); \
3709 OPTIONAL(scope, MDField, ); \
3710 REQUIRED(baseType, MDField, ); \
3711 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3712 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3713 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3714 OPTIONAL(flags, DIFlagField, ); \
3715 OPTIONAL(extraData, MDField, );
3717 #undef VISIT_MD_FIELDS
3719 Result = GET_OR_DISTINCT(DIDerivedType,
3720 (Context, tag.Val, name.Val, file.Val, line.Val,
3721 scope.Val, baseType.Val, size.Val, align.Val,
3722 offset.Val, flags.Val, extraData.Val));
3726 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3727 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3728 REQUIRED(tag, DwarfTagField, ); \
3729 OPTIONAL(name, MDStringField, ); \
3730 OPTIONAL(file, MDField, ); \
3731 OPTIONAL(line, LineField, ); \
3732 OPTIONAL(scope, MDField, ); \
3733 OPTIONAL(baseType, MDField, ); \
3734 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3735 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3736 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3737 OPTIONAL(flags, DIFlagField, ); \
3738 OPTIONAL(elements, MDField, ); \
3739 OPTIONAL(runtimeLang, DwarfLangField, ); \
3740 OPTIONAL(vtableHolder, MDField, ); \
3741 OPTIONAL(templateParams, MDField, ); \
3742 OPTIONAL(identifier, MDStringField, );
3744 #undef VISIT_MD_FIELDS
3746 Result = GET_OR_DISTINCT(
3748 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3749 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3750 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3754 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3755 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3756 OPTIONAL(flags, DIFlagField, ); \
3757 REQUIRED(types, MDField, );
3759 #undef VISIT_MD_FIELDS
3761 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3765 /// ParseDIFileType:
3766 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3767 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3768 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3769 REQUIRED(filename, MDStringField, ); \
3770 REQUIRED(directory, MDStringField, );
3772 #undef VISIT_MD_FIELDS
3774 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3778 /// ParseDICompileUnit:
3779 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3780 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3781 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3782 /// enums: !1, retainedTypes: !2, subprograms: !3,
3783 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3784 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3786 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3788 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3789 REQUIRED(language, DwarfLangField, ); \
3790 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3791 OPTIONAL(producer, MDStringField, ); \
3792 OPTIONAL(isOptimized, MDBoolField, ); \
3793 OPTIONAL(flags, MDStringField, ); \
3794 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3795 OPTIONAL(splitDebugFilename, MDStringField, ); \
3796 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3797 OPTIONAL(enums, MDField, ); \
3798 OPTIONAL(retainedTypes, MDField, ); \
3799 OPTIONAL(subprograms, MDField, ); \
3800 OPTIONAL(globals, MDField, ); \
3801 OPTIONAL(imports, MDField, ); \
3802 OPTIONAL(dwoId, MDUnsignedField, );
3804 #undef VISIT_MD_FIELDS
3806 Result = DICompileUnit::getDistinct(
3807 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3808 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3809 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3813 /// ParseDISubprogram:
3814 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3815 /// file: !1, line: 7, type: !2, isLocal: false,
3816 /// isDefinition: true, scopeLine: 8, containingType: !3,
3817 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3818 /// virtualIndex: 10, flags: 11,
3819 /// isOptimized: false, templateParams: !4, declaration: !5,
3821 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3822 auto Loc = Lex.getLoc();
3823 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3824 OPTIONAL(scope, MDField, ); \
3825 OPTIONAL(name, MDStringField, ); \
3826 OPTIONAL(linkageName, MDStringField, ); \
3827 OPTIONAL(file, MDField, ); \
3828 OPTIONAL(line, LineField, ); \
3829 OPTIONAL(type, MDField, ); \
3830 OPTIONAL(isLocal, MDBoolField, ); \
3831 OPTIONAL(isDefinition, MDBoolField, (true)); \
3832 OPTIONAL(scopeLine, LineField, ); \
3833 OPTIONAL(containingType, MDField, ); \
3834 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3835 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3836 OPTIONAL(flags, DIFlagField, ); \
3837 OPTIONAL(isOptimized, MDBoolField, ); \
3838 OPTIONAL(templateParams, MDField, ); \
3839 OPTIONAL(declaration, MDField, ); \
3840 OPTIONAL(variables, MDField, );
3842 #undef VISIT_MD_FIELDS
3844 if (isDefinition.Val && !IsDistinct)
3847 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3849 Result = GET_OR_DISTINCT(
3851 (Context, scope.Val, name.Val, linkageName.Val, file.Val, line.Val,
3852 type.Val, isLocal.Val, isDefinition.Val, scopeLine.Val,
3853 containingType.Val, virtuality.Val, virtualIndex.Val, flags.Val,
3854 isOptimized.Val, templateParams.Val, declaration.Val, variables.Val));
3858 /// ParseDILexicalBlock:
3859 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3860 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3861 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3862 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3863 OPTIONAL(file, MDField, ); \
3864 OPTIONAL(line, LineField, ); \
3865 OPTIONAL(column, ColumnField, );
3867 #undef VISIT_MD_FIELDS
3869 Result = GET_OR_DISTINCT(
3870 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3874 /// ParseDILexicalBlockFile:
3875 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3876 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3877 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3878 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3879 OPTIONAL(file, MDField, ); \
3880 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3882 #undef VISIT_MD_FIELDS
3884 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3885 (Context, scope.Val, file.Val, discriminator.Val));
3889 /// ParseDINamespace:
3890 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3891 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3892 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3893 REQUIRED(scope, MDField, ); \
3894 OPTIONAL(file, MDField, ); \
3895 OPTIONAL(name, MDStringField, ); \
3896 OPTIONAL(line, LineField, );
3898 #undef VISIT_MD_FIELDS
3900 Result = GET_OR_DISTINCT(DINamespace,
3901 (Context, scope.Val, file.Val, name.Val, line.Val));
3906 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3907 /// includePath: "/usr/include", isysroot: "/")
3908 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3909 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3910 REQUIRED(scope, MDField, ); \
3911 REQUIRED(name, MDStringField, ); \
3912 OPTIONAL(configMacros, MDStringField, ); \
3913 OPTIONAL(includePath, MDStringField, ); \
3914 OPTIONAL(isysroot, MDStringField, );
3916 #undef VISIT_MD_FIELDS
3918 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3919 configMacros.Val, includePath.Val, isysroot.Val));
3923 /// ParseDITemplateTypeParameter:
3924 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3925 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3926 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3927 OPTIONAL(name, MDStringField, ); \
3928 REQUIRED(type, MDField, );
3930 #undef VISIT_MD_FIELDS
3933 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3937 /// ParseDITemplateValueParameter:
3938 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3939 /// name: "V", type: !1, value: i32 7)
3940 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3941 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3942 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3943 OPTIONAL(name, MDStringField, ); \
3944 OPTIONAL(type, MDField, ); \
3945 REQUIRED(value, MDField, );
3947 #undef VISIT_MD_FIELDS
3949 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3950 (Context, tag.Val, name.Val, type.Val, value.Val));
3954 /// ParseDIGlobalVariable:
3955 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3956 /// file: !1, line: 7, type: !2, isLocal: false,
3957 /// isDefinition: true, variable: i32* @foo,
3958 /// declaration: !3)
3959 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3960 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3961 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3962 OPTIONAL(scope, MDField, ); \
3963 OPTIONAL(linkageName, MDStringField, ); \
3964 OPTIONAL(file, MDField, ); \
3965 OPTIONAL(line, LineField, ); \
3966 OPTIONAL(type, MDField, ); \
3967 OPTIONAL(isLocal, MDBoolField, ); \
3968 OPTIONAL(isDefinition, MDBoolField, (true)); \
3969 OPTIONAL(variable, MDConstant, ); \
3970 OPTIONAL(declaration, MDField, );
3972 #undef VISIT_MD_FIELDS
3974 Result = GET_OR_DISTINCT(DIGlobalVariable,
3975 (Context, scope.Val, name.Val, linkageName.Val,
3976 file.Val, line.Val, type.Val, isLocal.Val,
3977 isDefinition.Val, variable.Val, declaration.Val));
3981 /// ParseDILocalVariable:
3982 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3983 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3984 /// ::= !DILocalVariable(scope: !0, name: "foo",
3985 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3986 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3987 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3988 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3989 OPTIONAL(name, MDStringField, ); \
3990 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3991 OPTIONAL(file, MDField, ); \
3992 OPTIONAL(line, LineField, ); \
3993 OPTIONAL(type, MDField, ); \
3994 OPTIONAL(flags, DIFlagField, );
3996 #undef VISIT_MD_FIELDS
3998 Result = GET_OR_DISTINCT(DILocalVariable,
3999 (Context, scope.Val, name.Val, file.Val, line.Val,
4000 type.Val, arg.Val, flags.Val));
4004 /// ParseDIExpression:
4005 /// ::= !DIExpression(0, 7, -1)
4006 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4007 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4010 if (ParseToken(lltok::lparen, "expected '(' here"))
4013 SmallVector<uint64_t, 8> Elements;
4014 if (Lex.getKind() != lltok::rparen)
4016 if (Lex.getKind() == lltok::DwarfOp) {
4017 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4019 Elements.push_back(Op);
4022 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4025 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4026 return TokError("expected unsigned integer");
4028 auto &U = Lex.getAPSIntVal();
4029 if (U.ugt(UINT64_MAX))
4030 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4031 Elements.push_back(U.getZExtValue());
4033 } while (EatIfPresent(lltok::comma));
4035 if (ParseToken(lltok::rparen, "expected ')' here"))
4038 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4042 /// ParseDIObjCProperty:
4043 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4044 /// getter: "getFoo", attributes: 7, type: !2)
4045 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4046 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4047 OPTIONAL(name, MDStringField, ); \
4048 OPTIONAL(file, MDField, ); \
4049 OPTIONAL(line, LineField, ); \
4050 OPTIONAL(setter, MDStringField, ); \
4051 OPTIONAL(getter, MDStringField, ); \
4052 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4053 OPTIONAL(type, MDField, );
4055 #undef VISIT_MD_FIELDS
4057 Result = GET_OR_DISTINCT(DIObjCProperty,
4058 (Context, name.Val, file.Val, line.Val, setter.Val,
4059 getter.Val, attributes.Val, type.Val));
4063 /// ParseDIImportedEntity:
4064 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4065 /// line: 7, name: "foo")
4066 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4067 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4068 REQUIRED(tag, DwarfTagField, ); \
4069 REQUIRED(scope, MDField, ); \
4070 OPTIONAL(entity, MDField, ); \
4071 OPTIONAL(line, LineField, ); \
4072 OPTIONAL(name, MDStringField, );
4074 #undef VISIT_MD_FIELDS
4076 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4077 entity.Val, line.Val, name.Val));
4081 #undef PARSE_MD_FIELD
4083 #undef REQUIRE_FIELD
4084 #undef DECLARE_FIELD
4086 /// ParseMetadataAsValue
4087 /// ::= metadata i32 %local
4088 /// ::= metadata i32 @global
4089 /// ::= metadata i32 7
4091 /// ::= metadata !{...}
4092 /// ::= metadata !"string"
4093 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4094 // Note: the type 'metadata' has already been parsed.
4096 if (ParseMetadata(MD, &PFS))
4099 V = MetadataAsValue::get(Context, MD);
4103 /// ParseValueAsMetadata
4107 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4108 PerFunctionState *PFS) {
4111 if (ParseType(Ty, TypeMsg, Loc))
4113 if (Ty->isMetadataTy())
4114 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4117 if (ParseValue(Ty, V, PFS))
4120 MD = ValueAsMetadata::get(V);
4131 /// ::= !DILocation(...)
4132 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4133 if (Lex.getKind() == lltok::MetadataVar) {
4135 if (ParseSpecializedMDNode(N))
4143 if (Lex.getKind() != lltok::exclaim)
4144 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4147 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4151 // ::= '!' STRINGCONSTANT
4152 if (Lex.getKind() == lltok::StringConstant) {
4154 if (ParseMDString(S))
4164 if (ParseMDNodeTail(N))
4171 //===----------------------------------------------------------------------===//
4172 // Function Parsing.
4173 //===----------------------------------------------------------------------===//
4175 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4176 PerFunctionState *PFS,
4177 OperatorConstraint OC) {
4178 if (Ty->isFunctionTy())
4179 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4181 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4184 return Error(ID.Loc, "Catchpad value required in this position");
4186 return Error(ID.Loc, "Cleanuppad value required in this position");
4188 llvm_unreachable("Unexpected constraint kind");
4193 case ValID::t_LocalID:
4194 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4195 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4196 return V == nullptr;
4197 case ValID::t_LocalName:
4198 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4199 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4200 return V == nullptr;
4201 case ValID::t_InlineAsm: {
4202 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4203 return Error(ID.Loc, "invalid type for inline asm constraint string");
4204 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4205 (ID.UIntVal >> 1) & 1,
4206 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4209 case ValID::t_GlobalName:
4210 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4211 return V == nullptr;
4212 case ValID::t_GlobalID:
4213 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4214 return V == nullptr;
4215 case ValID::t_APSInt:
4216 if (!Ty->isIntegerTy())
4217 return Error(ID.Loc, "integer constant must have integer type");
4218 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4219 V = ConstantInt::get(Context, ID.APSIntVal);
4221 case ValID::t_APFloat:
4222 if (!Ty->isFloatingPointTy() ||
4223 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4224 return Error(ID.Loc, "floating point constant invalid for type");
4226 // The lexer has no type info, so builds all half, float, and double FP
4227 // constants as double. Fix this here. Long double does not need this.
4228 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4231 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4233 else if (Ty->isFloatTy())
4234 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4237 V = ConstantFP::get(Context, ID.APFloatVal);
4239 if (V->getType() != Ty)
4240 return Error(ID.Loc, "floating point constant does not have type '" +
4241 getTypeString(Ty) + "'");
4245 if (!Ty->isPointerTy())
4246 return Error(ID.Loc, "null must be a pointer type");
4247 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4249 case ValID::t_Undef:
4250 // FIXME: LabelTy should not be a first-class type.
4251 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4252 return Error(ID.Loc, "invalid type for undef constant");
4253 V = UndefValue::get(Ty);
4255 case ValID::t_EmptyArray:
4256 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4257 return Error(ID.Loc, "invalid empty array initializer");
4258 V = UndefValue::get(Ty);
4261 // FIXME: LabelTy should not be a first-class type.
4262 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4263 return Error(ID.Loc, "invalid type for null constant");
4264 V = Constant::getNullValue(Ty);
4267 if (!Ty->isTokenTy())
4268 return Error(ID.Loc, "invalid type for none constant");
4269 V = Constant::getNullValue(Ty);
4271 case ValID::t_Constant:
4272 if (ID.ConstantVal->getType() != Ty)
4273 return Error(ID.Loc, "constant expression type mismatch");
4277 case ValID::t_ConstantStruct:
4278 case ValID::t_PackedConstantStruct:
4279 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4280 if (ST->getNumElements() != ID.UIntVal)
4281 return Error(ID.Loc,
4282 "initializer with struct type has wrong # elements");
4283 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4284 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4286 // Verify that the elements are compatible with the structtype.
4287 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4288 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4289 return Error(ID.Loc, "element " + Twine(i) +
4290 " of struct initializer doesn't match struct element type");
4292 V = ConstantStruct::get(
4293 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4295 return Error(ID.Loc, "constant expression type mismatch");
4298 llvm_unreachable("Invalid ValID");
4301 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4304 auto Loc = Lex.getLoc();
4305 if (ParseValID(ID, /*PFS=*/nullptr))
4308 case ValID::t_APSInt:
4309 case ValID::t_APFloat:
4310 case ValID::t_Undef:
4311 case ValID::t_Constant:
4312 case ValID::t_ConstantStruct:
4313 case ValID::t_PackedConstantStruct: {
4315 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4317 assert(isa<Constant>(V) && "Expected a constant value");
4318 C = cast<Constant>(V);
4322 return Error(Loc, "expected a constant value");
4326 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4327 OperatorConstraint OC) {
4330 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4333 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4335 return ParseType(Ty) ||
4336 ParseValue(Ty, V, PFS);
4339 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4340 PerFunctionState &PFS) {
4343 if (ParseTypeAndValue(V, PFS)) return true;
4344 if (!isa<BasicBlock>(V))
4345 return Error(Loc, "expected a basic block");
4346 BB = cast<BasicBlock>(V);
4352 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4353 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4354 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4355 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4356 // Parse the linkage.
4357 LocTy LinkageLoc = Lex.getLoc();
4360 unsigned Visibility;
4361 unsigned DLLStorageClass;
4362 AttrBuilder RetAttrs;
4364 Type *RetType = nullptr;
4365 LocTy RetTypeLoc = Lex.getLoc();
4366 if (ParseOptionalLinkage(Linkage) ||
4367 ParseOptionalVisibility(Visibility) ||
4368 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4369 ParseOptionalCallingConv(CC) ||
4370 ParseOptionalReturnAttrs(RetAttrs) ||
4371 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4374 // Verify that the linkage is ok.
4375 switch ((GlobalValue::LinkageTypes)Linkage) {
4376 case GlobalValue::ExternalLinkage:
4377 break; // always ok.
4378 case GlobalValue::ExternalWeakLinkage:
4380 return Error(LinkageLoc, "invalid linkage for function definition");
4382 case GlobalValue::PrivateLinkage:
4383 case GlobalValue::InternalLinkage:
4384 case GlobalValue::AvailableExternallyLinkage:
4385 case GlobalValue::LinkOnceAnyLinkage:
4386 case GlobalValue::LinkOnceODRLinkage:
4387 case GlobalValue::WeakAnyLinkage:
4388 case GlobalValue::WeakODRLinkage:
4390 return Error(LinkageLoc, "invalid linkage for function declaration");
4392 case GlobalValue::AppendingLinkage:
4393 case GlobalValue::CommonLinkage:
4394 return Error(LinkageLoc, "invalid function linkage type");
4397 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4398 return Error(LinkageLoc,
4399 "symbol with local linkage must have default visibility");
4401 if (!FunctionType::isValidReturnType(RetType))
4402 return Error(RetTypeLoc, "invalid function return type");
4404 LocTy NameLoc = Lex.getLoc();
4406 std::string FunctionName;
4407 if (Lex.getKind() == lltok::GlobalVar) {
4408 FunctionName = Lex.getStrVal();
4409 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4410 unsigned NameID = Lex.getUIntVal();
4412 if (NameID != NumberedVals.size())
4413 return TokError("function expected to be numbered '%" +
4414 Twine(NumberedVals.size()) + "'");
4416 return TokError("expected function name");
4421 if (Lex.getKind() != lltok::lparen)
4422 return TokError("expected '(' in function argument list");
4424 SmallVector<ArgInfo, 8> ArgList;
4426 AttrBuilder FuncAttrs;
4427 std::vector<unsigned> FwdRefAttrGrps;
4429 std::string Section;
4433 LocTy UnnamedAddrLoc;
4434 Constant *Prefix = nullptr;
4435 Constant *Prologue = nullptr;
4436 Constant *PersonalityFn = nullptr;
4439 if (ParseArgumentList(ArgList, isVarArg) ||
4440 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4442 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4444 (EatIfPresent(lltok::kw_section) &&
4445 ParseStringConstant(Section)) ||
4446 parseOptionalComdat(FunctionName, C) ||
4447 ParseOptionalAlignment(Alignment) ||
4448 (EatIfPresent(lltok::kw_gc) &&
4449 ParseStringConstant(GC)) ||
4450 (EatIfPresent(lltok::kw_prefix) &&
4451 ParseGlobalTypeAndValue(Prefix)) ||
4452 (EatIfPresent(lltok::kw_prologue) &&
4453 ParseGlobalTypeAndValue(Prologue)) ||
4454 (EatIfPresent(lltok::kw_personality) &&
4455 ParseGlobalTypeAndValue(PersonalityFn)))
4458 if (FuncAttrs.contains(Attribute::Builtin))
4459 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4461 // If the alignment was parsed as an attribute, move to the alignment field.
4462 if (FuncAttrs.hasAlignmentAttr()) {
4463 Alignment = FuncAttrs.getAlignment();
4464 FuncAttrs.removeAttribute(Attribute::Alignment);
4467 // Okay, if we got here, the function is syntactically valid. Convert types
4468 // and do semantic checks.
4469 std::vector<Type*> ParamTypeList;
4470 SmallVector<AttributeSet, 8> Attrs;
4472 if (RetAttrs.hasAttributes())
4473 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4474 AttributeSet::ReturnIndex,
4477 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4478 ParamTypeList.push_back(ArgList[i].Ty);
4479 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4480 AttrBuilder B(ArgList[i].Attrs, i + 1);
4481 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4485 if (FuncAttrs.hasAttributes())
4486 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4487 AttributeSet::FunctionIndex,
4490 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4492 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4493 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4496 FunctionType::get(RetType, ParamTypeList, isVarArg);
4497 PointerType *PFT = PointerType::getUnqual(FT);
4500 if (!FunctionName.empty()) {
4501 // If this was a definition of a forward reference, remove the definition
4502 // from the forward reference table and fill in the forward ref.
4503 auto FRVI = ForwardRefVals.find(FunctionName);
4504 if (FRVI != ForwardRefVals.end()) {
4505 Fn = M->getFunction(FunctionName);
4507 return Error(FRVI->second.second, "invalid forward reference to "
4508 "function as global value!");
4509 if (Fn->getType() != PFT)
4510 return Error(FRVI->second.second, "invalid forward reference to "
4511 "function '" + FunctionName + "' with wrong type!");
4513 ForwardRefVals.erase(FRVI);
4514 } else if ((Fn = M->getFunction(FunctionName))) {
4515 // Reject redefinitions.
4516 return Error(NameLoc, "invalid redefinition of function '" +
4517 FunctionName + "'");
4518 } else if (M->getNamedValue(FunctionName)) {
4519 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4523 // If this is a definition of a forward referenced function, make sure the
4525 auto I = ForwardRefValIDs.find(NumberedVals.size());
4526 if (I != ForwardRefValIDs.end()) {
4527 Fn = cast<Function>(I->second.first);
4528 if (Fn->getType() != PFT)
4529 return Error(NameLoc, "type of definition and forward reference of '@" +
4530 Twine(NumberedVals.size()) + "' disagree");
4531 ForwardRefValIDs.erase(I);
4536 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4537 else // Move the forward-reference to the correct spot in the module.
4538 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4540 if (FunctionName.empty())
4541 NumberedVals.push_back(Fn);
4543 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4544 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4545 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4546 Fn->setCallingConv(CC);
4547 Fn->setAttributes(PAL);
4548 Fn->setUnnamedAddr(UnnamedAddr);
4549 Fn->setAlignment(Alignment);
4550 Fn->setSection(Section);
4552 Fn->setPersonalityFn(PersonalityFn);
4553 if (!GC.empty()) Fn->setGC(GC.c_str());
4554 Fn->setPrefixData(Prefix);
4555 Fn->setPrologueData(Prologue);
4556 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4558 // Add all of the arguments we parsed to the function.
4559 Function::arg_iterator ArgIt = Fn->arg_begin();
4560 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4561 // If the argument has a name, insert it into the argument symbol table.
4562 if (ArgList[i].Name.empty()) continue;
4564 // Set the name, if it conflicted, it will be auto-renamed.
4565 ArgIt->setName(ArgList[i].Name);
4567 if (ArgIt->getName() != ArgList[i].Name)
4568 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4569 ArgList[i].Name + "'");
4575 // Check the declaration has no block address forward references.
4577 if (FunctionName.empty()) {
4578 ID.Kind = ValID::t_GlobalID;
4579 ID.UIntVal = NumberedVals.size() - 1;
4581 ID.Kind = ValID::t_GlobalName;
4582 ID.StrVal = FunctionName;
4584 auto Blocks = ForwardRefBlockAddresses.find(ID);
4585 if (Blocks != ForwardRefBlockAddresses.end())
4586 return Error(Blocks->first.Loc,
4587 "cannot take blockaddress inside a declaration");
4591 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4593 if (FunctionNumber == -1) {
4594 ID.Kind = ValID::t_GlobalName;
4595 ID.StrVal = F.getName();
4597 ID.Kind = ValID::t_GlobalID;
4598 ID.UIntVal = FunctionNumber;
4601 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4602 if (Blocks == P.ForwardRefBlockAddresses.end())
4605 for (const auto &I : Blocks->second) {
4606 const ValID &BBID = I.first;
4607 GlobalValue *GV = I.second;
4609 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4610 "Expected local id or name");
4612 if (BBID.Kind == ValID::t_LocalName)
4613 BB = GetBB(BBID.StrVal, BBID.Loc);
4615 BB = GetBB(BBID.UIntVal, BBID.Loc);
4617 return P.Error(BBID.Loc, "referenced value is not a basic block");
4619 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4620 GV->eraseFromParent();
4623 P.ForwardRefBlockAddresses.erase(Blocks);
4627 /// ParseFunctionBody
4628 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4629 bool LLParser::ParseFunctionBody(Function &Fn) {
4630 if (Lex.getKind() != lltok::lbrace)
4631 return TokError("expected '{' in function body");
4632 Lex.Lex(); // eat the {.
4634 int FunctionNumber = -1;
4635 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4637 PerFunctionState PFS(*this, Fn, FunctionNumber);
4639 // Resolve block addresses and allow basic blocks to be forward-declared
4640 // within this function.
4641 if (PFS.resolveForwardRefBlockAddresses())
4643 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4645 // We need at least one basic block.
4646 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4647 return TokError("function body requires at least one basic block");
4649 while (Lex.getKind() != lltok::rbrace &&
4650 Lex.getKind() != lltok::kw_uselistorder)
4651 if (ParseBasicBlock(PFS)) return true;
4653 while (Lex.getKind() != lltok::rbrace)
4654 if (ParseUseListOrder(&PFS))
4660 // Verify function is ok.
4661 return PFS.FinishFunction();
4665 /// ::= LabelStr? Instruction*
4666 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4667 // If this basic block starts out with a name, remember it.
4669 LocTy NameLoc = Lex.getLoc();
4670 if (Lex.getKind() == lltok::LabelStr) {
4671 Name = Lex.getStrVal();
4675 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4677 return Error(NameLoc,
4678 "unable to create block named '" + Name + "'");
4680 std::string NameStr;
4682 // Parse the instructions in this block until we get a terminator.
4685 // This instruction may have three possibilities for a name: a) none
4686 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4687 LocTy NameLoc = Lex.getLoc();
4691 if (Lex.getKind() == lltok::LocalVarID) {
4692 NameID = Lex.getUIntVal();
4694 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4696 } else if (Lex.getKind() == lltok::LocalVar) {
4697 NameStr = Lex.getStrVal();
4699 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4703 switch (ParseInstruction(Inst, BB, PFS)) {
4704 default: llvm_unreachable("Unknown ParseInstruction result!");
4705 case InstError: return true;
4707 BB->getInstList().push_back(Inst);
4709 // With a normal result, we check to see if the instruction is followed by
4710 // a comma and metadata.
4711 if (EatIfPresent(lltok::comma))
4712 if (ParseInstructionMetadata(*Inst))
4715 case InstExtraComma:
4716 BB->getInstList().push_back(Inst);
4718 // If the instruction parser ate an extra comma at the end of it, it
4719 // *must* be followed by metadata.
4720 if (ParseInstructionMetadata(*Inst))
4725 // Set the name on the instruction.
4726 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4727 } while (!isa<TerminatorInst>(Inst));
4732 //===----------------------------------------------------------------------===//
4733 // Instruction Parsing.
4734 //===----------------------------------------------------------------------===//
4736 /// ParseInstruction - Parse one of the many different instructions.
4738 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4739 PerFunctionState &PFS) {
4740 lltok::Kind Token = Lex.getKind();
4741 if (Token == lltok::Eof)
4742 return TokError("found end of file when expecting more instructions");
4743 LocTy Loc = Lex.getLoc();
4744 unsigned KeywordVal = Lex.getUIntVal();
4745 Lex.Lex(); // Eat the keyword.
4748 default: return Error(Loc, "expected instruction opcode");
4749 // Terminator Instructions.
4750 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4751 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4752 case lltok::kw_br: return ParseBr(Inst, PFS);
4753 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4754 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4755 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4756 case lltok::kw_resume: return ParseResume(Inst, PFS);
4757 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4758 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4759 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4760 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4761 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4762 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4763 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4764 // Binary Operators.
4768 case lltok::kw_shl: {
4769 bool NUW = EatIfPresent(lltok::kw_nuw);
4770 bool NSW = EatIfPresent(lltok::kw_nsw);
4771 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4773 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4775 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4776 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4779 case lltok::kw_fadd:
4780 case lltok::kw_fsub:
4781 case lltok::kw_fmul:
4782 case lltok::kw_fdiv:
4783 case lltok::kw_frem: {
4784 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4785 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4789 Inst->setFastMathFlags(FMF);
4793 case lltok::kw_sdiv:
4794 case lltok::kw_udiv:
4795 case lltok::kw_lshr:
4796 case lltok::kw_ashr: {
4797 bool Exact = EatIfPresent(lltok::kw_exact);
4799 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4800 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4804 case lltok::kw_urem:
4805 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4808 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4809 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4810 case lltok::kw_fcmp: {
4811 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4812 int Res = ParseCompare(Inst, PFS, KeywordVal);
4816 Inst->setFastMathFlags(FMF);
4821 case lltok::kw_trunc:
4822 case lltok::kw_zext:
4823 case lltok::kw_sext:
4824 case lltok::kw_fptrunc:
4825 case lltok::kw_fpext:
4826 case lltok::kw_bitcast:
4827 case lltok::kw_addrspacecast:
4828 case lltok::kw_uitofp:
4829 case lltok::kw_sitofp:
4830 case lltok::kw_fptoui:
4831 case lltok::kw_fptosi:
4832 case lltok::kw_inttoptr:
4833 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4835 case lltok::kw_select: return ParseSelect(Inst, PFS);
4836 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4837 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4838 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4839 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4840 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4841 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4843 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4844 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4845 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4846 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
4848 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4849 case lltok::kw_load: return ParseLoad(Inst, PFS);
4850 case lltok::kw_store: return ParseStore(Inst, PFS);
4851 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4852 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4853 case lltok::kw_fence: return ParseFence(Inst, PFS);
4854 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4855 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4856 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4860 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4861 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4862 if (Opc == Instruction::FCmp) {
4863 switch (Lex.getKind()) {
4864 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4865 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4866 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4867 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4868 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4869 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4870 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4871 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4872 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4873 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4874 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4875 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4876 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4877 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4878 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4879 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4880 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4883 switch (Lex.getKind()) {
4884 default: return TokError("expected icmp predicate (e.g. 'eq')");
4885 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4886 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4887 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4888 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4889 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4890 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4891 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4892 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4893 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4894 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4901 //===----------------------------------------------------------------------===//
4902 // Terminator Instructions.
4903 //===----------------------------------------------------------------------===//
4905 /// ParseRet - Parse a return instruction.
4906 /// ::= 'ret' void (',' !dbg, !1)*
4907 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4908 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4909 PerFunctionState &PFS) {
4910 SMLoc TypeLoc = Lex.getLoc();
4912 if (ParseType(Ty, true /*void allowed*/)) return true;
4914 Type *ResType = PFS.getFunction().getReturnType();
4916 if (Ty->isVoidTy()) {
4917 if (!ResType->isVoidTy())
4918 return Error(TypeLoc, "value doesn't match function result type '" +
4919 getTypeString(ResType) + "'");
4921 Inst = ReturnInst::Create(Context);
4926 if (ParseValue(Ty, RV, PFS)) return true;
4928 if (ResType != RV->getType())
4929 return Error(TypeLoc, "value doesn't match function result type '" +
4930 getTypeString(ResType) + "'");
4932 Inst = ReturnInst::Create(Context, RV);
4938 /// ::= 'br' TypeAndValue
4939 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4940 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4943 BasicBlock *Op1, *Op2;
4944 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4946 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4947 Inst = BranchInst::Create(BB);
4951 if (Op0->getType() != Type::getInt1Ty(Context))
4952 return Error(Loc, "branch condition must have 'i1' type");
4954 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4955 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4956 ParseToken(lltok::comma, "expected ',' after true destination") ||
4957 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4960 Inst = BranchInst::Create(Op1, Op2, Op0);
4966 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4968 /// ::= (TypeAndValue ',' TypeAndValue)*
4969 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4970 LocTy CondLoc, BBLoc;
4972 BasicBlock *DefaultBB;
4973 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4974 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4975 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4976 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4979 if (!Cond->getType()->isIntegerTy())
4980 return Error(CondLoc, "switch condition must have integer type");
4982 // Parse the jump table pairs.
4983 SmallPtrSet<Value*, 32> SeenCases;
4984 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4985 while (Lex.getKind() != lltok::rsquare) {
4989 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4990 ParseToken(lltok::comma, "expected ',' after case value") ||
4991 ParseTypeAndBasicBlock(DestBB, PFS))
4994 if (!SeenCases.insert(Constant).second)
4995 return Error(CondLoc, "duplicate case value in switch");
4996 if (!isa<ConstantInt>(Constant))
4997 return Error(CondLoc, "case value is not a constant integer");
4999 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5002 Lex.Lex(); // Eat the ']'.
5004 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5005 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5006 SI->addCase(Table[i].first, Table[i].second);
5013 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5014 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5017 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5018 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5019 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5022 if (!Address->getType()->isPointerTy())
5023 return Error(AddrLoc, "indirectbr address must have pointer type");
5025 // Parse the destination list.
5026 SmallVector<BasicBlock*, 16> DestList;
5028 if (Lex.getKind() != lltok::rsquare) {
5030 if (ParseTypeAndBasicBlock(DestBB, PFS))
5032 DestList.push_back(DestBB);
5034 while (EatIfPresent(lltok::comma)) {
5035 if (ParseTypeAndBasicBlock(DestBB, PFS))
5037 DestList.push_back(DestBB);
5041 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5044 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5045 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5046 IBI->addDestination(DestList[i]);
5053 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5054 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5055 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5056 LocTy CallLoc = Lex.getLoc();
5057 AttrBuilder RetAttrs, FnAttrs;
5058 std::vector<unsigned> FwdRefAttrGrps;
5061 Type *RetType = nullptr;
5064 SmallVector<ParamInfo, 16> ArgList;
5065 SmallVector<OperandBundleDef, 2> BundleList;
5067 BasicBlock *NormalBB, *UnwindBB;
5068 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5069 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5070 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5071 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5073 ParseOptionalOperandBundles(BundleList, PFS) ||
5074 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5075 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5076 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5077 ParseTypeAndBasicBlock(UnwindBB, PFS))
5080 // If RetType is a non-function pointer type, then this is the short syntax
5081 // for the call, which means that RetType is just the return type. Infer the
5082 // rest of the function argument types from the arguments that are present.
5083 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5085 // Pull out the types of all of the arguments...
5086 std::vector<Type*> ParamTypes;
5087 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5088 ParamTypes.push_back(ArgList[i].V->getType());
5090 if (!FunctionType::isValidReturnType(RetType))
5091 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5093 Ty = FunctionType::get(RetType, ParamTypes, false);
5098 // Look up the callee.
5100 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5103 // Set up the Attribute for the function.
5104 SmallVector<AttributeSet, 8> Attrs;
5105 if (RetAttrs.hasAttributes())
5106 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5107 AttributeSet::ReturnIndex,
5110 SmallVector<Value*, 8> Args;
5112 // Loop through FunctionType's arguments and ensure they are specified
5113 // correctly. Also, gather any parameter attributes.
5114 FunctionType::param_iterator I = Ty->param_begin();
5115 FunctionType::param_iterator E = Ty->param_end();
5116 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5117 Type *ExpectedTy = nullptr;
5120 } else if (!Ty->isVarArg()) {
5121 return Error(ArgList[i].Loc, "too many arguments specified");
5124 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5125 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5126 getTypeString(ExpectedTy) + "'");
5127 Args.push_back(ArgList[i].V);
5128 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5129 AttrBuilder B(ArgList[i].Attrs, i + 1);
5130 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5135 return Error(CallLoc, "not enough parameters specified for call");
5137 if (FnAttrs.hasAttributes()) {
5138 if (FnAttrs.hasAlignmentAttr())
5139 return Error(CallLoc, "invoke instructions may not have an alignment");
5141 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5142 AttributeSet::FunctionIndex,
5146 // Finish off the Attribute and check them
5147 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5150 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5151 II->setCallingConv(CC);
5152 II->setAttributes(PAL);
5153 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5159 /// ::= 'resume' TypeAndValue
5160 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5161 Value *Exn; LocTy ExnLoc;
5162 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5165 ResumeInst *RI = ResumeInst::Create(Exn);
5170 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5171 PerFunctionState &PFS) {
5172 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5175 while (Lex.getKind() != lltok::rsquare) {
5176 // If this isn't the first argument, we need a comma.
5177 if (!Args.empty() &&
5178 ParseToken(lltok::comma, "expected ',' in argument list"))
5181 // Parse the argument.
5183 Type *ArgTy = nullptr;
5184 if (ParseType(ArgTy, ArgLoc))
5188 if (ArgTy->isMetadataTy()) {
5189 if (ParseMetadataAsValue(V, PFS))
5192 if (ParseValue(ArgTy, V, PFS))
5198 Lex.Lex(); // Lex the ']'.
5203 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5204 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5205 Value *CleanupPad = nullptr;
5207 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5210 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5213 BasicBlock *UnwindBB = nullptr;
5214 if (Lex.getKind() == lltok::kw_to) {
5216 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5219 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5224 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5229 /// ::= 'catchret' Value 'to' TypeAndValue
5230 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5231 Value *CatchPad = nullptr;
5233 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5237 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5238 ParseTypeAndBasicBlock(BB, PFS))
5241 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5246 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5247 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5248 SmallVector<Value *, 8> Args;
5249 if (ParseExceptionArgs(Args, PFS))
5252 BasicBlock *NormalBB, *UnwindBB;
5253 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5254 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5255 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5256 ParseTypeAndBasicBlock(UnwindBB, PFS))
5259 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5263 /// ParseTerminatePad
5264 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5265 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5266 SmallVector<Value *, 8> Args;
5267 if (ParseExceptionArgs(Args, PFS))
5270 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5273 BasicBlock *UnwindBB = nullptr;
5274 if (Lex.getKind() == lltok::kw_to) {
5276 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5279 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5284 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5289 /// ::= 'cleanuppad' ParamList
5290 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5291 SmallVector<Value *, 8> Args;
5292 if (ParseExceptionArgs(Args, PFS))
5295 Inst = CleanupPadInst::Create(Context, Args);
5299 /// ParseCatchEndPad
5300 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5301 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5302 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5305 BasicBlock *UnwindBB = nullptr;
5306 if (Lex.getKind() == lltok::kw_to) {
5308 if (Lex.getKind() == lltok::kw_caller) {
5314 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5319 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5323 /// ParseCatchEndPad
5324 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5325 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5326 Value *CleanupPad = nullptr;
5328 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5331 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5334 BasicBlock *UnwindBB = nullptr;
5335 if (Lex.getKind() == lltok::kw_to) {
5337 if (Lex.getKind() == lltok::kw_caller) {
5343 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5348 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5352 //===----------------------------------------------------------------------===//
5353 // Binary Operators.
5354 //===----------------------------------------------------------------------===//
5357 /// ::= ArithmeticOps TypeAndValue ',' Value
5359 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5360 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5361 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5362 unsigned Opc, unsigned OperandType) {
5363 LocTy Loc; Value *LHS, *RHS;
5364 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5365 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5366 ParseValue(LHS->getType(), RHS, PFS))
5370 switch (OperandType) {
5371 default: llvm_unreachable("Unknown operand type!");
5372 case 0: // int or FP.
5373 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5374 LHS->getType()->isFPOrFPVectorTy();
5376 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5377 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5381 return Error(Loc, "invalid operand type for instruction");
5383 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5388 /// ::= ArithmeticOps TypeAndValue ',' Value {
5389 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5391 LocTy Loc; Value *LHS, *RHS;
5392 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5393 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5394 ParseValue(LHS->getType(), RHS, PFS))
5397 if (!LHS->getType()->isIntOrIntVectorTy())
5398 return Error(Loc,"instruction requires integer or integer vector operands");
5400 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5406 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5407 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5408 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5410 // Parse the integer/fp comparison predicate.
5414 if (ParseCmpPredicate(Pred, Opc) ||
5415 ParseTypeAndValue(LHS, Loc, PFS) ||
5416 ParseToken(lltok::comma, "expected ',' after compare value") ||
5417 ParseValue(LHS->getType(), RHS, PFS))
5420 if (Opc == Instruction::FCmp) {
5421 if (!LHS->getType()->isFPOrFPVectorTy())
5422 return Error(Loc, "fcmp requires floating point operands");
5423 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5425 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5426 if (!LHS->getType()->isIntOrIntVectorTy() &&
5427 !LHS->getType()->getScalarType()->isPointerTy())
5428 return Error(Loc, "icmp requires integer operands");
5429 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5434 //===----------------------------------------------------------------------===//
5435 // Other Instructions.
5436 //===----------------------------------------------------------------------===//
5440 /// ::= CastOpc TypeAndValue 'to' Type
5441 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5445 Type *DestTy = nullptr;
5446 if (ParseTypeAndValue(Op, Loc, PFS) ||
5447 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5451 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5452 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5453 return Error(Loc, "invalid cast opcode for cast from '" +
5454 getTypeString(Op->getType()) + "' to '" +
5455 getTypeString(DestTy) + "'");
5457 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5462 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5463 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5465 Value *Op0, *Op1, *Op2;
5466 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5467 ParseToken(lltok::comma, "expected ',' after select condition") ||
5468 ParseTypeAndValue(Op1, PFS) ||
5469 ParseToken(lltok::comma, "expected ',' after select value") ||
5470 ParseTypeAndValue(Op2, PFS))
5473 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5474 return Error(Loc, Reason);
5476 Inst = SelectInst::Create(Op0, Op1, Op2);
5481 /// ::= 'va_arg' TypeAndValue ',' Type
5482 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5484 Type *EltTy = nullptr;
5486 if (ParseTypeAndValue(Op, PFS) ||
5487 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5488 ParseType(EltTy, TypeLoc))
5491 if (!EltTy->isFirstClassType())
5492 return Error(TypeLoc, "va_arg requires operand with first class type");
5494 Inst = new VAArgInst(Op, EltTy);
5498 /// ParseExtractElement
5499 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5500 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5503 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5504 ParseToken(lltok::comma, "expected ',' after extract value") ||
5505 ParseTypeAndValue(Op1, PFS))
5508 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5509 return Error(Loc, "invalid extractelement operands");
5511 Inst = ExtractElementInst::Create(Op0, Op1);
5515 /// ParseInsertElement
5516 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5517 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5519 Value *Op0, *Op1, *Op2;
5520 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5521 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5522 ParseTypeAndValue(Op1, PFS) ||
5523 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5524 ParseTypeAndValue(Op2, PFS))
5527 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5528 return Error(Loc, "invalid insertelement operands");
5530 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5534 /// ParseShuffleVector
5535 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5536 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5538 Value *Op0, *Op1, *Op2;
5539 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5540 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5541 ParseTypeAndValue(Op1, PFS) ||
5542 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5543 ParseTypeAndValue(Op2, PFS))
5546 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5547 return Error(Loc, "invalid shufflevector operands");
5549 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5554 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5555 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5556 Type *Ty = nullptr; LocTy TypeLoc;
5559 if (ParseType(Ty, TypeLoc) ||
5560 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5561 ParseValue(Ty, Op0, PFS) ||
5562 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5563 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5564 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5567 bool AteExtraComma = false;
5568 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5570 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5572 if (!EatIfPresent(lltok::comma))
5575 if (Lex.getKind() == lltok::MetadataVar) {
5576 AteExtraComma = true;
5580 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5581 ParseValue(Ty, Op0, PFS) ||
5582 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5583 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5584 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5588 if (!Ty->isFirstClassType())
5589 return Error(TypeLoc, "phi node must have first class type");
5591 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5592 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5593 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5595 return AteExtraComma ? InstExtraComma : InstNormal;
5599 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5601 /// ::= 'catch' TypeAndValue
5603 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5604 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5605 Type *Ty = nullptr; LocTy TyLoc;
5607 if (ParseType(Ty, TyLoc))
5610 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5611 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5613 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5614 LandingPadInst::ClauseType CT;
5615 if (EatIfPresent(lltok::kw_catch))
5616 CT = LandingPadInst::Catch;
5617 else if (EatIfPresent(lltok::kw_filter))
5618 CT = LandingPadInst::Filter;
5620 return TokError("expected 'catch' or 'filter' clause type");
5624 if (ParseTypeAndValue(V, VLoc, PFS))
5627 // A 'catch' type expects a non-array constant. A filter clause expects an
5629 if (CT == LandingPadInst::Catch) {
5630 if (isa<ArrayType>(V->getType()))
5631 Error(VLoc, "'catch' clause has an invalid type");
5633 if (!isa<ArrayType>(V->getType()))
5634 Error(VLoc, "'filter' clause has an invalid type");
5637 Constant *CV = dyn_cast<Constant>(V);
5639 return Error(VLoc, "clause argument must be a constant");
5643 Inst = LP.release();
5648 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5649 /// ParameterList OptionalAttrs
5650 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5651 /// ParameterList OptionalAttrs
5652 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5653 /// ParameterList OptionalAttrs
5654 /// ::= 'notail' 'call' OptionalCallingConv OptionalAttrs Type Value
5655 /// ParameterList OptionalAttrs
5656 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5657 CallInst::TailCallKind TCK) {
5658 AttrBuilder RetAttrs, FnAttrs;
5659 std::vector<unsigned> FwdRefAttrGrps;
5662 Type *RetType = nullptr;
5665 SmallVector<ParamInfo, 16> ArgList;
5666 SmallVector<OperandBundleDef, 2> BundleList;
5667 LocTy CallLoc = Lex.getLoc();
5669 if ((TCK != CallInst::TCK_None &&
5670 ParseToken(lltok::kw_call,
5671 "expected 'tail call', 'musttail call', or 'notail call'")) ||
5672 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5673 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5674 ParseValID(CalleeID) ||
5675 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5676 PFS.getFunction().isVarArg()) ||
5677 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5678 ParseOptionalOperandBundles(BundleList, PFS))
5681 // If RetType is a non-function pointer type, then this is the short syntax
5682 // for the call, which means that RetType is just the return type. Infer the
5683 // rest of the function argument types from the arguments that are present.
5684 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5686 // Pull out the types of all of the arguments...
5687 std::vector<Type*> ParamTypes;
5688 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5689 ParamTypes.push_back(ArgList[i].V->getType());
5691 if (!FunctionType::isValidReturnType(RetType))
5692 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5694 Ty = FunctionType::get(RetType, ParamTypes, false);
5699 // Look up the callee.
5701 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5704 // Set up the Attribute for the function.
5705 SmallVector<AttributeSet, 8> Attrs;
5706 if (RetAttrs.hasAttributes())
5707 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5708 AttributeSet::ReturnIndex,
5711 SmallVector<Value*, 8> Args;
5713 // Loop through FunctionType's arguments and ensure they are specified
5714 // correctly. Also, gather any parameter attributes.
5715 FunctionType::param_iterator I = Ty->param_begin();
5716 FunctionType::param_iterator E = Ty->param_end();
5717 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5718 Type *ExpectedTy = nullptr;
5721 } else if (!Ty->isVarArg()) {
5722 return Error(ArgList[i].Loc, "too many arguments specified");
5725 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5726 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5727 getTypeString(ExpectedTy) + "'");
5728 Args.push_back(ArgList[i].V);
5729 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5730 AttrBuilder B(ArgList[i].Attrs, i + 1);
5731 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5736 return Error(CallLoc, "not enough parameters specified for call");
5738 if (FnAttrs.hasAttributes()) {
5739 if (FnAttrs.hasAlignmentAttr())
5740 return Error(CallLoc, "call instructions may not have an alignment");
5742 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5743 AttributeSet::FunctionIndex,
5747 // Finish off the Attribute and check them
5748 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5750 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5751 CI->setTailCallKind(TCK);
5752 CI->setCallingConv(CC);
5753 CI->setAttributes(PAL);
5754 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5759 //===----------------------------------------------------------------------===//
5760 // Memory Instructions.
5761 //===----------------------------------------------------------------------===//
5764 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5765 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5766 Value *Size = nullptr;
5767 LocTy SizeLoc, TyLoc;
5768 unsigned Alignment = 0;
5771 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5773 if (ParseType(Ty, TyLoc)) return true;
5775 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5776 return Error(TyLoc, "invalid type for alloca");
5778 bool AteExtraComma = false;
5779 if (EatIfPresent(lltok::comma)) {
5780 if (Lex.getKind() == lltok::kw_align) {
5781 if (ParseOptionalAlignment(Alignment)) return true;
5782 } else if (Lex.getKind() == lltok::MetadataVar) {
5783 AteExtraComma = true;
5785 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5786 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5791 if (Size && !Size->getType()->isIntegerTy())
5792 return Error(SizeLoc, "element count must have integer type");
5794 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5795 AI->setUsedWithInAlloca(IsInAlloca);
5797 return AteExtraComma ? InstExtraComma : InstNormal;
5801 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5802 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5803 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5804 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5805 Value *Val; LocTy Loc;
5806 unsigned Alignment = 0;
5807 bool AteExtraComma = false;
5808 bool isAtomic = false;
5809 AtomicOrdering Ordering = NotAtomic;
5810 SynchronizationScope Scope = CrossThread;
5812 if (Lex.getKind() == lltok::kw_atomic) {
5817 bool isVolatile = false;
5818 if (Lex.getKind() == lltok::kw_volatile) {
5824 LocTy ExplicitTypeLoc = Lex.getLoc();
5825 if (ParseType(Ty) ||
5826 ParseToken(lltok::comma, "expected comma after load's type") ||
5827 ParseTypeAndValue(Val, Loc, PFS) ||
5828 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5829 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5832 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5833 return Error(Loc, "load operand must be a pointer to a first class type");
5834 if (isAtomic && !Alignment)
5835 return Error(Loc, "atomic load must have explicit non-zero alignment");
5836 if (Ordering == Release || Ordering == AcquireRelease)
5837 return Error(Loc, "atomic load cannot use Release ordering");
5839 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5840 return Error(ExplicitTypeLoc,
5841 "explicit pointee type doesn't match operand's pointee type");
5843 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5844 return AteExtraComma ? InstExtraComma : InstNormal;
5849 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5850 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5851 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5852 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5853 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5854 unsigned Alignment = 0;
5855 bool AteExtraComma = false;
5856 bool isAtomic = false;
5857 AtomicOrdering Ordering = NotAtomic;
5858 SynchronizationScope Scope = CrossThread;
5860 if (Lex.getKind() == lltok::kw_atomic) {
5865 bool isVolatile = false;
5866 if (Lex.getKind() == lltok::kw_volatile) {
5871 if (ParseTypeAndValue(Val, Loc, PFS) ||
5872 ParseToken(lltok::comma, "expected ',' after store operand") ||
5873 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5874 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5875 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5878 if (!Ptr->getType()->isPointerTy())
5879 return Error(PtrLoc, "store operand must be a pointer");
5880 if (!Val->getType()->isFirstClassType())
5881 return Error(Loc, "store operand must be a first class value");
5882 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5883 return Error(Loc, "stored value and pointer type do not match");
5884 if (isAtomic && !Alignment)
5885 return Error(Loc, "atomic store must have explicit non-zero alignment");
5886 if (Ordering == Acquire || Ordering == AcquireRelease)
5887 return Error(Loc, "atomic store cannot use Acquire ordering");
5889 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5890 return AteExtraComma ? InstExtraComma : InstNormal;
5894 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5895 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5896 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5897 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5898 bool AteExtraComma = false;
5899 AtomicOrdering SuccessOrdering = NotAtomic;
5900 AtomicOrdering FailureOrdering = NotAtomic;
5901 SynchronizationScope Scope = CrossThread;
5902 bool isVolatile = false;
5903 bool isWeak = false;
5905 if (EatIfPresent(lltok::kw_weak))
5908 if (EatIfPresent(lltok::kw_volatile))
5911 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5912 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5913 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5914 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5915 ParseTypeAndValue(New, NewLoc, PFS) ||
5916 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5917 ParseOrdering(FailureOrdering))
5920 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5921 return TokError("cmpxchg cannot be unordered");
5922 if (SuccessOrdering < FailureOrdering)
5923 return TokError("cmpxchg must be at least as ordered on success as failure");
5924 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5925 return TokError("cmpxchg failure ordering cannot include release semantics");
5926 if (!Ptr->getType()->isPointerTy())
5927 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5928 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5929 return Error(CmpLoc, "compare value and pointer type do not match");
5930 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5931 return Error(NewLoc, "new value and pointer type do not match");
5932 if (!New->getType()->isIntegerTy())
5933 return Error(NewLoc, "cmpxchg operand must be an integer");
5934 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5935 if (Size < 8 || (Size & (Size - 1)))
5936 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5939 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5940 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5941 CXI->setVolatile(isVolatile);
5942 CXI->setWeak(isWeak);
5944 return AteExtraComma ? InstExtraComma : InstNormal;
5948 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5949 /// 'singlethread'? AtomicOrdering
5950 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5951 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5952 bool AteExtraComma = false;
5953 AtomicOrdering Ordering = NotAtomic;
5954 SynchronizationScope Scope = CrossThread;
5955 bool isVolatile = false;
5956 AtomicRMWInst::BinOp Operation;
5958 if (EatIfPresent(lltok::kw_volatile))
5961 switch (Lex.getKind()) {
5962 default: return TokError("expected binary operation in atomicrmw");
5963 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5964 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5965 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5966 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5967 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5968 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5969 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5970 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5971 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5972 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5973 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5975 Lex.Lex(); // Eat the operation.
5977 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5978 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5979 ParseTypeAndValue(Val, ValLoc, PFS) ||
5980 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5983 if (Ordering == Unordered)
5984 return TokError("atomicrmw cannot be unordered");
5985 if (!Ptr->getType()->isPointerTy())
5986 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5987 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5988 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5989 if (!Val->getType()->isIntegerTy())
5990 return Error(ValLoc, "atomicrmw operand must be an integer");
5991 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5992 if (Size < 8 || (Size & (Size - 1)))
5993 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5996 AtomicRMWInst *RMWI =
5997 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5998 RMWI->setVolatile(isVolatile);
6000 return AteExtraComma ? InstExtraComma : InstNormal;
6004 /// ::= 'fence' 'singlethread'? AtomicOrdering
6005 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6006 AtomicOrdering Ordering = NotAtomic;
6007 SynchronizationScope Scope = CrossThread;
6008 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6011 if (Ordering == Unordered)
6012 return TokError("fence cannot be unordered");
6013 if (Ordering == Monotonic)
6014 return TokError("fence cannot be monotonic");
6016 Inst = new FenceInst(Context, Ordering, Scope);
6020 /// ParseGetElementPtr
6021 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6022 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6023 Value *Ptr = nullptr;
6024 Value *Val = nullptr;
6027 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6030 LocTy ExplicitTypeLoc = Lex.getLoc();
6031 if (ParseType(Ty) ||
6032 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6033 ParseTypeAndValue(Ptr, Loc, PFS))
6036 Type *BaseType = Ptr->getType();
6037 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6038 if (!BasePointerType)
6039 return Error(Loc, "base of getelementptr must be a pointer");
6041 if (Ty != BasePointerType->getElementType())
6042 return Error(ExplicitTypeLoc,
6043 "explicit pointee type doesn't match operand's pointee type");
6045 SmallVector<Value*, 16> Indices;
6046 bool AteExtraComma = false;
6047 // GEP returns a vector of pointers if at least one of parameters is a vector.
6048 // All vector parameters should have the same vector width.
6049 unsigned GEPWidth = BaseType->isVectorTy() ?
6050 BaseType->getVectorNumElements() : 0;
6052 while (EatIfPresent(lltok::comma)) {
6053 if (Lex.getKind() == lltok::MetadataVar) {
6054 AteExtraComma = true;
6057 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6058 if (!Val->getType()->getScalarType()->isIntegerTy())
6059 return Error(EltLoc, "getelementptr index must be an integer");
6061 if (Val->getType()->isVectorTy()) {
6062 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6063 if (GEPWidth && GEPWidth != ValNumEl)
6064 return Error(EltLoc,
6065 "getelementptr vector index has a wrong number of elements");
6066 GEPWidth = ValNumEl;
6068 Indices.push_back(Val);
6071 SmallPtrSet<Type*, 4> Visited;
6072 if (!Indices.empty() && !Ty->isSized(&Visited))
6073 return Error(Loc, "base element of getelementptr must be sized");
6075 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6076 return Error(Loc, "invalid getelementptr indices");
6077 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6079 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6080 return AteExtraComma ? InstExtraComma : InstNormal;
6083 /// ParseExtractValue
6084 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6085 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6086 Value *Val; LocTy Loc;
6087 SmallVector<unsigned, 4> Indices;
6089 if (ParseTypeAndValue(Val, Loc, PFS) ||
6090 ParseIndexList(Indices, AteExtraComma))
6093 if (!Val->getType()->isAggregateType())
6094 return Error(Loc, "extractvalue operand must be aggregate type");
6096 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6097 return Error(Loc, "invalid indices for extractvalue");
6098 Inst = ExtractValueInst::Create(Val, Indices);
6099 return AteExtraComma ? InstExtraComma : InstNormal;
6102 /// ParseInsertValue
6103 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6104 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6105 Value *Val0, *Val1; LocTy Loc0, Loc1;
6106 SmallVector<unsigned, 4> Indices;
6108 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6109 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6110 ParseTypeAndValue(Val1, Loc1, PFS) ||
6111 ParseIndexList(Indices, AteExtraComma))
6114 if (!Val0->getType()->isAggregateType())
6115 return Error(Loc0, "insertvalue operand must be aggregate type");
6117 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6119 return Error(Loc0, "invalid indices for insertvalue");
6120 if (IndexedType != Val1->getType())
6121 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6122 getTypeString(Val1->getType()) + "' instead of '" +
6123 getTypeString(IndexedType) + "'");
6124 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6125 return AteExtraComma ? InstExtraComma : InstNormal;
6128 //===----------------------------------------------------------------------===//
6129 // Embedded metadata.
6130 //===----------------------------------------------------------------------===//
6132 /// ParseMDNodeVector
6133 /// ::= { Element (',' Element)* }
6135 /// ::= 'null' | TypeAndValue
6136 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6137 if (ParseToken(lltok::lbrace, "expected '{' here"))
6140 // Check for an empty list.
6141 if (EatIfPresent(lltok::rbrace))
6145 // Null is a special case since it is typeless.
6146 if (EatIfPresent(lltok::kw_null)) {
6147 Elts.push_back(nullptr);
6152 if (ParseMetadata(MD, nullptr))
6155 } while (EatIfPresent(lltok::comma));
6157 return ParseToken(lltok::rbrace, "expected end of metadata node");
6160 //===----------------------------------------------------------------------===//
6161 // Use-list order directives.
6162 //===----------------------------------------------------------------------===//
6163 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6166 return Error(Loc, "value has no uses");
6168 unsigned NumUses = 0;
6169 SmallDenseMap<const Use *, unsigned, 16> Order;
6170 for (const Use &U : V->uses()) {
6171 if (++NumUses > Indexes.size())
6173 Order[&U] = Indexes[NumUses - 1];
6176 return Error(Loc, "value only has one use");
6177 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6178 return Error(Loc, "wrong number of indexes, expected " +
6179 Twine(std::distance(V->use_begin(), V->use_end())));
6181 V->sortUseList([&](const Use &L, const Use &R) {
6182 return Order.lookup(&L) < Order.lookup(&R);
6187 /// ParseUseListOrderIndexes
6188 /// ::= '{' uint32 (',' uint32)+ '}'
6189 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6190 SMLoc Loc = Lex.getLoc();
6191 if (ParseToken(lltok::lbrace, "expected '{' here"))
6193 if (Lex.getKind() == lltok::rbrace)
6194 return Lex.Error("expected non-empty list of uselistorder indexes");
6196 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6197 // indexes should be distinct numbers in the range [0, size-1], and should
6199 unsigned Offset = 0;
6201 bool IsOrdered = true;
6202 assert(Indexes.empty() && "Expected empty order vector");
6205 if (ParseUInt32(Index))
6208 // Update consistency checks.
6209 Offset += Index - Indexes.size();
6210 Max = std::max(Max, Index);
6211 IsOrdered &= Index == Indexes.size();
6213 Indexes.push_back(Index);
6214 } while (EatIfPresent(lltok::comma));
6216 if (ParseToken(lltok::rbrace, "expected '}' here"))
6219 if (Indexes.size() < 2)
6220 return Error(Loc, "expected >= 2 uselistorder indexes");
6221 if (Offset != 0 || Max >= Indexes.size())
6222 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6224 return Error(Loc, "expected uselistorder indexes to change the order");
6229 /// ParseUseListOrder
6230 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6231 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6232 SMLoc Loc = Lex.getLoc();
6233 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6237 SmallVector<unsigned, 16> Indexes;
6238 if (ParseTypeAndValue(V, PFS) ||
6239 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6240 ParseUseListOrderIndexes(Indexes))
6243 return sortUseListOrder(V, Indexes, Loc);
6246 /// ParseUseListOrderBB
6247 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6248 bool LLParser::ParseUseListOrderBB() {
6249 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6250 SMLoc Loc = Lex.getLoc();
6254 SmallVector<unsigned, 16> Indexes;
6255 if (ParseValID(Fn) ||
6256 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6257 ParseValID(Label) ||
6258 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6259 ParseUseListOrderIndexes(Indexes))
6262 // Check the function.
6264 if (Fn.Kind == ValID::t_GlobalName)
6265 GV = M->getNamedValue(Fn.StrVal);
6266 else if (Fn.Kind == ValID::t_GlobalID)
6267 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6269 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6271 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6272 auto *F = dyn_cast<Function>(GV);
6274 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6275 if (F->isDeclaration())
6276 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6278 // Check the basic block.
6279 if (Label.Kind == ValID::t_LocalID)
6280 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6281 if (Label.Kind != ValID::t_LocalName)
6282 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6283 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6285 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6286 if (!isa<BasicBlock>(V))
6287 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6289 return sortUseListOrder(V, Indexes, Loc);