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 AliaseeLoc = Lex.getLoc();
683 if (Lex.getKind() != lltok::kw_bitcast &&
684 Lex.getKind() != lltok::kw_getelementptr &&
685 Lex.getKind() != lltok::kw_addrspacecast &&
686 Lex.getKind() != lltok::kw_inttoptr) {
687 if (ParseGlobalTypeAndValue(Aliasee))
690 // The bitcast dest type is not present, it is implied by the dest type.
694 if (ID.Kind != ValID::t_Constant)
695 return Error(AliaseeLoc, "invalid aliasee");
696 Aliasee = ID.ConstantVal;
699 Type *AliaseeType = Aliasee->getType();
700 auto *PTy = dyn_cast<PointerType>(AliaseeType);
702 return Error(AliaseeLoc, "An alias must have pointer type");
704 // Okay, create the alias but do not insert it into the module yet.
705 std::unique_ptr<GlobalAlias> GA(
706 GlobalAlias::create(PTy, (GlobalValue::LinkageTypes)Linkage, Name,
707 Aliasee, /*Parent*/ nullptr));
708 GA->setThreadLocalMode(TLM);
709 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
710 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
711 GA->setUnnamedAddr(UnnamedAddr);
714 NumberedVals.push_back(GA.get());
716 // See if this value already exists in the symbol table. If so, it is either
717 // a redefinition or a definition of a forward reference.
718 if (GlobalValue *Val = M->getNamedValue(Name)) {
719 // See if this was a redefinition. If so, there is no entry in
721 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
722 I = ForwardRefVals.find(Name);
723 if (I == ForwardRefVals.end())
724 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
726 // Otherwise, this was a definition of forward ref. Verify that types
728 if (Val->getType() != GA->getType())
729 return Error(NameLoc,
730 "forward reference and definition of alias have different types");
732 // If they agree, just RAUW the old value with the alias and remove the
734 Val->replaceAllUsesWith(GA.get());
735 Val->eraseFromParent();
736 ForwardRefVals.erase(I);
739 // Insert into the module, we know its name won't collide now.
740 M->getAliasList().push_back(GA.get());
741 assert(GA->getName() == Name && "Should not be a name conflict!");
743 // The module owns this now
750 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
751 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
752 /// OptionalExternallyInitialized GlobalType Type Const
753 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
754 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
755 /// OptionalExternallyInitialized GlobalType Type Const
757 /// Everything up to and including OptionalUnnamedAddr has been parsed
760 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
761 unsigned Linkage, bool HasLinkage,
762 unsigned Visibility, unsigned DLLStorageClass,
763 GlobalVariable::ThreadLocalMode TLM,
765 if (!isValidVisibilityForLinkage(Visibility, Linkage))
766 return Error(NameLoc,
767 "symbol with local linkage must have default visibility");
770 bool IsConstant, IsExternallyInitialized;
771 LocTy IsExternallyInitializedLoc;
775 if (ParseOptionalAddrSpace(AddrSpace) ||
776 ParseOptionalToken(lltok::kw_externally_initialized,
777 IsExternallyInitialized,
778 &IsExternallyInitializedLoc) ||
779 ParseGlobalType(IsConstant) ||
780 ParseType(Ty, TyLoc))
783 // If the linkage is specified and is external, then no initializer is
785 Constant *Init = nullptr;
786 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
787 Linkage != GlobalValue::ExternalLinkage)) {
788 if (ParseGlobalValue(Ty, Init))
792 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
793 return Error(TyLoc, "invalid type for global variable");
795 GlobalValue *GVal = nullptr;
797 // See if the global was forward referenced, if so, use the global.
799 GVal = M->getNamedValue(Name);
801 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
802 return Error(NameLoc, "redefinition of global '@" + Name + "'");
805 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
806 I = ForwardRefValIDs.find(NumberedVals.size());
807 if (I != ForwardRefValIDs.end()) {
808 GVal = I->second.first;
809 ForwardRefValIDs.erase(I);
815 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
816 Name, nullptr, GlobalVariable::NotThreadLocal,
819 if (GVal->getValueType() != Ty)
821 "forward reference and definition of global have different types");
823 GV = cast<GlobalVariable>(GVal);
825 // Move the forward-reference to the correct spot in the module.
826 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
830 NumberedVals.push_back(GV);
832 // Set the parsed properties on the global.
834 GV->setInitializer(Init);
835 GV->setConstant(IsConstant);
836 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
837 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
838 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
839 GV->setExternallyInitialized(IsExternallyInitialized);
840 GV->setThreadLocalMode(TLM);
841 GV->setUnnamedAddr(UnnamedAddr);
843 // Parse attributes on the global.
844 while (Lex.getKind() == lltok::comma) {
847 if (Lex.getKind() == lltok::kw_section) {
849 GV->setSection(Lex.getStrVal());
850 if (ParseToken(lltok::StringConstant, "expected global section string"))
852 } else if (Lex.getKind() == lltok::kw_align) {
854 if (ParseOptionalAlignment(Alignment)) return true;
855 GV->setAlignment(Alignment);
858 if (parseOptionalComdat(Name, C))
863 return TokError("unknown global variable property!");
870 /// ParseUnnamedAttrGrp
871 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
872 bool LLParser::ParseUnnamedAttrGrp() {
873 assert(Lex.getKind() == lltok::kw_attributes);
874 LocTy AttrGrpLoc = Lex.getLoc();
877 if (Lex.getKind() != lltok::AttrGrpID)
878 return TokError("expected attribute group id");
880 unsigned VarID = Lex.getUIntVal();
881 std::vector<unsigned> unused;
885 if (ParseToken(lltok::equal, "expected '=' here") ||
886 ParseToken(lltok::lbrace, "expected '{' here") ||
887 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
889 ParseToken(lltok::rbrace, "expected end of attribute group"))
892 if (!NumberedAttrBuilders[VarID].hasAttributes())
893 return Error(AttrGrpLoc, "attribute group has no attributes");
898 /// ParseFnAttributeValuePairs
899 /// ::= <attr> | <attr> '=' <value>
900 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
901 std::vector<unsigned> &FwdRefAttrGrps,
902 bool inAttrGrp, LocTy &BuiltinLoc) {
903 bool HaveError = false;
908 lltok::Kind Token = Lex.getKind();
909 if (Token == lltok::kw_builtin)
910 BuiltinLoc = Lex.getLoc();
913 if (!inAttrGrp) return HaveError;
914 return Error(Lex.getLoc(), "unterminated attribute group");
919 case lltok::AttrGrpID: {
920 // Allow a function to reference an attribute group:
922 // define void @foo() #1 { ... }
926 "cannot have an attribute group reference in an attribute group");
928 unsigned AttrGrpNum = Lex.getUIntVal();
929 if (inAttrGrp) break;
931 // Save the reference to the attribute group. We'll fill it in later.
932 FwdRefAttrGrps.push_back(AttrGrpNum);
935 // Target-dependent attributes:
936 case lltok::StringConstant: {
937 if (ParseStringAttribute(B))
942 // Target-independent attributes:
943 case lltok::kw_align: {
944 // As a hack, we allow function alignment to be initially parsed as an
945 // attribute on a function declaration/definition or added to an attribute
946 // group and later moved to the alignment field.
950 if (ParseToken(lltok::equal, "expected '=' here") ||
951 ParseUInt32(Alignment))
954 if (ParseOptionalAlignment(Alignment))
957 B.addAlignmentAttr(Alignment);
960 case lltok::kw_alignstack: {
964 if (ParseToken(lltok::equal, "expected '=' here") ||
965 ParseUInt32(Alignment))
968 if (ParseOptionalStackAlignment(Alignment))
971 B.addStackAlignmentAttr(Alignment);
974 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
975 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
976 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
977 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
978 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
979 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
980 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
981 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
982 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
983 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
984 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
985 case lltok::kw_noimplicitfloat:
986 B.addAttribute(Attribute::NoImplicitFloat); break;
987 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
988 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
989 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
990 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
991 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
992 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
993 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
994 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
995 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
996 case lltok::kw_returns_twice:
997 B.addAttribute(Attribute::ReturnsTwice); break;
998 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
999 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1000 case lltok::kw_sspstrong:
1001 B.addAttribute(Attribute::StackProtectStrong); break;
1002 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1003 case lltok::kw_sanitize_address:
1004 B.addAttribute(Attribute::SanitizeAddress); break;
1005 case lltok::kw_sanitize_thread:
1006 B.addAttribute(Attribute::SanitizeThread); break;
1007 case lltok::kw_sanitize_memory:
1008 B.addAttribute(Attribute::SanitizeMemory); break;
1009 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1012 case lltok::kw_inreg:
1013 case lltok::kw_signext:
1014 case lltok::kw_zeroext:
1017 "invalid use of attribute on a function");
1019 case lltok::kw_byval:
1020 case lltok::kw_dereferenceable:
1021 case lltok::kw_dereferenceable_or_null:
1022 case lltok::kw_inalloca:
1023 case lltok::kw_nest:
1024 case lltok::kw_noalias:
1025 case lltok::kw_nocapture:
1026 case lltok::kw_nonnull:
1027 case lltok::kw_returned:
1028 case lltok::kw_sret:
1031 "invalid use of parameter-only attribute on a function");
1039 //===----------------------------------------------------------------------===//
1040 // GlobalValue Reference/Resolution Routines.
1041 //===----------------------------------------------------------------------===//
1043 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1044 const std::string &Name) {
1045 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1046 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1048 return new GlobalVariable(*M, PTy->getElementType(), false,
1049 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1050 nullptr, GlobalVariable::NotThreadLocal,
1051 PTy->getAddressSpace());
1054 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1055 /// forward reference record if needed. This can return null if the value
1056 /// exists but does not have the right type.
1057 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1059 PointerType *PTy = dyn_cast<PointerType>(Ty);
1061 Error(Loc, "global variable reference must have pointer type");
1065 // Look this name up in the normal function symbol table.
1067 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1069 // If this is a forward reference for the value, see if we already created a
1070 // forward ref record.
1072 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1073 I = ForwardRefVals.find(Name);
1074 if (I != ForwardRefVals.end())
1075 Val = I->second.first;
1078 // If we have the value in the symbol table or fwd-ref table, return it.
1080 if (Val->getType() == Ty) return Val;
1081 Error(Loc, "'@" + Name + "' defined with type '" +
1082 getTypeString(Val->getType()) + "'");
1086 // Otherwise, create a new forward reference for this value and remember it.
1087 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1088 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1092 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1093 PointerType *PTy = dyn_cast<PointerType>(Ty);
1095 Error(Loc, "global variable reference must have pointer type");
1099 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1101 // If this is a forward reference for the value, see if we already created a
1102 // forward ref record.
1104 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1105 I = ForwardRefValIDs.find(ID);
1106 if (I != ForwardRefValIDs.end())
1107 Val = I->second.first;
1110 // If we have the value in the symbol table or fwd-ref table, return it.
1112 if (Val->getType() == Ty) return Val;
1113 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1114 getTypeString(Val->getType()) + "'");
1118 // Otherwise, create a new forward reference for this value and remember it.
1119 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1120 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1125 //===----------------------------------------------------------------------===//
1126 // Comdat Reference/Resolution Routines.
1127 //===----------------------------------------------------------------------===//
1129 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1130 // Look this name up in the comdat symbol table.
1131 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1132 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1133 if (I != ComdatSymTab.end())
1136 // Otherwise, create a new forward reference for this value and remember it.
1137 Comdat *C = M->getOrInsertComdat(Name);
1138 ForwardRefComdats[Name] = Loc;
1143 //===----------------------------------------------------------------------===//
1145 //===----------------------------------------------------------------------===//
1147 /// ParseToken - If the current token has the specified kind, eat it and return
1148 /// success. Otherwise, emit the specified error and return failure.
1149 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1150 if (Lex.getKind() != T)
1151 return TokError(ErrMsg);
1156 /// ParseStringConstant
1157 /// ::= StringConstant
1158 bool LLParser::ParseStringConstant(std::string &Result) {
1159 if (Lex.getKind() != lltok::StringConstant)
1160 return TokError("expected string constant");
1161 Result = Lex.getStrVal();
1168 bool LLParser::ParseUInt32(unsigned &Val) {
1169 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1170 return TokError("expected integer");
1171 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1172 if (Val64 != unsigned(Val64))
1173 return TokError("expected 32-bit integer (too large)");
1181 bool LLParser::ParseUInt64(uint64_t &Val) {
1182 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1183 return TokError("expected integer");
1184 Val = Lex.getAPSIntVal().getLimitedValue();
1190 /// := 'localdynamic'
1191 /// := 'initialexec'
1193 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1194 switch (Lex.getKind()) {
1196 return TokError("expected localdynamic, initialexec or localexec");
1197 case lltok::kw_localdynamic:
1198 TLM = GlobalVariable::LocalDynamicTLSModel;
1200 case lltok::kw_initialexec:
1201 TLM = GlobalVariable::InitialExecTLSModel;
1203 case lltok::kw_localexec:
1204 TLM = GlobalVariable::LocalExecTLSModel;
1212 /// ParseOptionalThreadLocal
1214 /// := 'thread_local'
1215 /// := 'thread_local' '(' tlsmodel ')'
1216 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1217 TLM = GlobalVariable::NotThreadLocal;
1218 if (!EatIfPresent(lltok::kw_thread_local))
1221 TLM = GlobalVariable::GeneralDynamicTLSModel;
1222 if (Lex.getKind() == lltok::lparen) {
1224 return ParseTLSModel(TLM) ||
1225 ParseToken(lltok::rparen, "expected ')' after thread local model");
1230 /// ParseOptionalAddrSpace
1232 /// := 'addrspace' '(' uint32 ')'
1233 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1235 if (!EatIfPresent(lltok::kw_addrspace))
1237 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1238 ParseUInt32(AddrSpace) ||
1239 ParseToken(lltok::rparen, "expected ')' in address space");
1242 /// ParseStringAttribute
1243 /// := StringConstant
1244 /// := StringConstant '=' StringConstant
1245 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1246 std::string Attr = Lex.getStrVal();
1249 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1251 B.addAttribute(Attr, Val);
1255 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1256 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1257 bool HaveError = false;
1262 lltok::Kind Token = Lex.getKind();
1264 default: // End of attributes.
1266 case lltok::StringConstant: {
1267 if (ParseStringAttribute(B))
1271 case lltok::kw_align: {
1273 if (ParseOptionalAlignment(Alignment))
1275 B.addAlignmentAttr(Alignment);
1278 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1279 case lltok::kw_dereferenceable: {
1281 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1283 B.addDereferenceableAttr(Bytes);
1286 case lltok::kw_dereferenceable_or_null: {
1288 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1290 B.addDereferenceableOrNullAttr(Bytes);
1293 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1294 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1295 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1296 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1297 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1298 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1299 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1300 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1301 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1302 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1303 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1304 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1306 case lltok::kw_alignstack:
1307 case lltok::kw_alwaysinline:
1308 case lltok::kw_argmemonly:
1309 case lltok::kw_builtin:
1310 case lltok::kw_inlinehint:
1311 case lltok::kw_jumptable:
1312 case lltok::kw_minsize:
1313 case lltok::kw_naked:
1314 case lltok::kw_nobuiltin:
1315 case lltok::kw_noduplicate:
1316 case lltok::kw_noimplicitfloat:
1317 case lltok::kw_noinline:
1318 case lltok::kw_nonlazybind:
1319 case lltok::kw_noredzone:
1320 case lltok::kw_noreturn:
1321 case lltok::kw_nounwind:
1322 case lltok::kw_optnone:
1323 case lltok::kw_optsize:
1324 case lltok::kw_returns_twice:
1325 case lltok::kw_sanitize_address:
1326 case lltok::kw_sanitize_memory:
1327 case lltok::kw_sanitize_thread:
1329 case lltok::kw_sspreq:
1330 case lltok::kw_sspstrong:
1331 case lltok::kw_safestack:
1332 case lltok::kw_uwtable:
1333 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1341 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1342 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1343 bool HaveError = false;
1348 lltok::Kind Token = Lex.getKind();
1350 default: // End of attributes.
1352 case lltok::StringConstant: {
1353 if (ParseStringAttribute(B))
1357 case lltok::kw_dereferenceable: {
1359 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1361 B.addDereferenceableAttr(Bytes);
1364 case lltok::kw_dereferenceable_or_null: {
1366 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1368 B.addDereferenceableOrNullAttr(Bytes);
1371 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1372 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1373 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1374 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1375 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1378 case lltok::kw_align:
1379 case lltok::kw_byval:
1380 case lltok::kw_inalloca:
1381 case lltok::kw_nest:
1382 case lltok::kw_nocapture:
1383 case lltok::kw_returned:
1384 case lltok::kw_sret:
1385 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1388 case lltok::kw_alignstack:
1389 case lltok::kw_alwaysinline:
1390 case lltok::kw_argmemonly:
1391 case lltok::kw_builtin:
1392 case lltok::kw_cold:
1393 case lltok::kw_inlinehint:
1394 case lltok::kw_jumptable:
1395 case lltok::kw_minsize:
1396 case lltok::kw_naked:
1397 case lltok::kw_nobuiltin:
1398 case lltok::kw_noduplicate:
1399 case lltok::kw_noimplicitfloat:
1400 case lltok::kw_noinline:
1401 case lltok::kw_nonlazybind:
1402 case lltok::kw_noredzone:
1403 case lltok::kw_noreturn:
1404 case lltok::kw_nounwind:
1405 case lltok::kw_optnone:
1406 case lltok::kw_optsize:
1407 case lltok::kw_returns_twice:
1408 case lltok::kw_sanitize_address:
1409 case lltok::kw_sanitize_memory:
1410 case lltok::kw_sanitize_thread:
1412 case lltok::kw_sspreq:
1413 case lltok::kw_sspstrong:
1414 case lltok::kw_safestack:
1415 case lltok::kw_uwtable:
1416 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1419 case lltok::kw_readnone:
1420 case lltok::kw_readonly:
1421 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1428 /// ParseOptionalLinkage
1435 /// ::= 'linkonce_odr'
1436 /// ::= 'available_externally'
1439 /// ::= 'extern_weak'
1441 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1443 switch (Lex.getKind()) {
1444 default: Res=GlobalValue::ExternalLinkage; return false;
1445 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1446 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1447 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1448 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1449 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1450 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1451 case lltok::kw_available_externally:
1452 Res = GlobalValue::AvailableExternallyLinkage;
1454 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1455 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1456 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1457 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1464 /// ParseOptionalVisibility
1470 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1471 switch (Lex.getKind()) {
1472 default: Res = GlobalValue::DefaultVisibility; return false;
1473 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1474 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1475 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1481 /// ParseOptionalDLLStorageClass
1486 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1487 switch (Lex.getKind()) {
1488 default: Res = GlobalValue::DefaultStorageClass; return false;
1489 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1490 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1496 /// ParseOptionalCallingConv
1500 /// ::= 'intel_ocl_bicc'
1502 /// ::= 'x86_stdcallcc'
1503 /// ::= 'x86_fastcallcc'
1504 /// ::= 'x86_thiscallcc'
1505 /// ::= 'x86_vectorcallcc'
1506 /// ::= 'arm_apcscc'
1507 /// ::= 'arm_aapcscc'
1508 /// ::= 'arm_aapcs_vfpcc'
1509 /// ::= 'msp430_intrcc'
1510 /// ::= 'ptx_kernel'
1511 /// ::= 'ptx_device'
1513 /// ::= 'spir_kernel'
1514 /// ::= 'x86_64_sysvcc'
1515 /// ::= 'x86_64_win64cc'
1516 /// ::= 'webkit_jscc'
1518 /// ::= 'preserve_mostcc'
1519 /// ::= 'preserve_allcc'
1523 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1524 switch (Lex.getKind()) {
1525 default: CC = CallingConv::C; return false;
1526 case lltok::kw_ccc: CC = CallingConv::C; break;
1527 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1528 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1529 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1530 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1531 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1532 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1533 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1534 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1535 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1536 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1537 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1538 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1539 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1540 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1541 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1542 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1543 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1544 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1545 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1546 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1547 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1548 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1549 case lltok::kw_cc: {
1551 return ParseUInt32(CC);
1559 /// ParseMetadataAttachment
1561 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1562 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1564 std::string Name = Lex.getStrVal();
1565 Kind = M->getMDKindID(Name);
1568 return ParseMDNode(MD);
1571 /// ParseInstructionMetadata
1572 /// ::= !dbg !42 (',' !dbg !57)*
1573 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1575 if (Lex.getKind() != lltok::MetadataVar)
1576 return TokError("expected metadata after comma");
1580 if (ParseMetadataAttachment(MDK, N))
1583 Inst.setMetadata(MDK, N);
1584 if (MDK == LLVMContext::MD_tbaa)
1585 InstsWithTBAATag.push_back(&Inst);
1587 // If this is the end of the list, we're done.
1588 } while (EatIfPresent(lltok::comma));
1592 /// ParseOptionalFunctionMetadata
1594 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1595 while (Lex.getKind() == lltok::MetadataVar) {
1598 if (ParseMetadataAttachment(MDK, N))
1601 F.setMetadata(MDK, N);
1606 /// ParseOptionalAlignment
1609 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1611 if (!EatIfPresent(lltok::kw_align))
1613 LocTy AlignLoc = Lex.getLoc();
1614 if (ParseUInt32(Alignment)) return true;
1615 if (!isPowerOf2_32(Alignment))
1616 return Error(AlignLoc, "alignment is not a power of two");
1617 if (Alignment > Value::MaximumAlignment)
1618 return Error(AlignLoc, "huge alignments are not supported yet");
1622 /// ParseOptionalDerefAttrBytes
1624 /// ::= AttrKind '(' 4 ')'
1626 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1627 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1629 assert((AttrKind == lltok::kw_dereferenceable ||
1630 AttrKind == lltok::kw_dereferenceable_or_null) &&
1634 if (!EatIfPresent(AttrKind))
1636 LocTy ParenLoc = Lex.getLoc();
1637 if (!EatIfPresent(lltok::lparen))
1638 return Error(ParenLoc, "expected '('");
1639 LocTy DerefLoc = Lex.getLoc();
1640 if (ParseUInt64(Bytes)) return true;
1641 ParenLoc = Lex.getLoc();
1642 if (!EatIfPresent(lltok::rparen))
1643 return Error(ParenLoc, "expected ')'");
1645 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1649 /// ParseOptionalCommaAlign
1653 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1655 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1656 bool &AteExtraComma) {
1657 AteExtraComma = false;
1658 while (EatIfPresent(lltok::comma)) {
1659 // Metadata at the end is an early exit.
1660 if (Lex.getKind() == lltok::MetadataVar) {
1661 AteExtraComma = true;
1665 if (Lex.getKind() != lltok::kw_align)
1666 return Error(Lex.getLoc(), "expected metadata or 'align'");
1668 if (ParseOptionalAlignment(Alignment)) return true;
1674 /// ParseScopeAndOrdering
1675 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1678 /// This sets Scope and Ordering to the parsed values.
1679 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1680 AtomicOrdering &Ordering) {
1684 Scope = CrossThread;
1685 if (EatIfPresent(lltok::kw_singlethread))
1686 Scope = SingleThread;
1688 return ParseOrdering(Ordering);
1692 /// ::= AtomicOrdering
1694 /// This sets Ordering to the parsed value.
1695 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1696 switch (Lex.getKind()) {
1697 default: return TokError("Expected ordering on atomic instruction");
1698 case lltok::kw_unordered: Ordering = Unordered; break;
1699 case lltok::kw_monotonic: Ordering = Monotonic; break;
1700 case lltok::kw_acquire: Ordering = Acquire; break;
1701 case lltok::kw_release: Ordering = Release; break;
1702 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1703 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1709 /// ParseOptionalStackAlignment
1711 /// ::= 'alignstack' '(' 4 ')'
1712 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1714 if (!EatIfPresent(lltok::kw_alignstack))
1716 LocTy ParenLoc = Lex.getLoc();
1717 if (!EatIfPresent(lltok::lparen))
1718 return Error(ParenLoc, "expected '('");
1719 LocTy AlignLoc = Lex.getLoc();
1720 if (ParseUInt32(Alignment)) return true;
1721 ParenLoc = Lex.getLoc();
1722 if (!EatIfPresent(lltok::rparen))
1723 return Error(ParenLoc, "expected ')'");
1724 if (!isPowerOf2_32(Alignment))
1725 return Error(AlignLoc, "stack alignment is not a power of two");
1729 /// ParseIndexList - This parses the index list for an insert/extractvalue
1730 /// instruction. This sets AteExtraComma in the case where we eat an extra
1731 /// comma at the end of the line and find that it is followed by metadata.
1732 /// Clients that don't allow metadata can call the version of this function that
1733 /// only takes one argument.
1736 /// ::= (',' uint32)+
1738 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1739 bool &AteExtraComma) {
1740 AteExtraComma = false;
1742 if (Lex.getKind() != lltok::comma)
1743 return TokError("expected ',' as start of index list");
1745 while (EatIfPresent(lltok::comma)) {
1746 if (Lex.getKind() == lltok::MetadataVar) {
1747 if (Indices.empty()) return TokError("expected index");
1748 AteExtraComma = true;
1752 if (ParseUInt32(Idx)) return true;
1753 Indices.push_back(Idx);
1759 //===----------------------------------------------------------------------===//
1761 //===----------------------------------------------------------------------===//
1763 /// ParseType - Parse a type.
1764 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1765 SMLoc TypeLoc = Lex.getLoc();
1766 switch (Lex.getKind()) {
1768 return TokError(Msg);
1770 // Type ::= 'float' | 'void' (etc)
1771 Result = Lex.getTyVal();
1775 // Type ::= StructType
1776 if (ParseAnonStructType(Result, false))
1779 case lltok::lsquare:
1780 // Type ::= '[' ... ']'
1781 Lex.Lex(); // eat the lsquare.
1782 if (ParseArrayVectorType(Result, false))
1785 case lltok::less: // Either vector or packed struct.
1786 // Type ::= '<' ... '>'
1788 if (Lex.getKind() == lltok::lbrace) {
1789 if (ParseAnonStructType(Result, true) ||
1790 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1792 } else if (ParseArrayVectorType(Result, true))
1795 case lltok::LocalVar: {
1797 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1799 // If the type hasn't been defined yet, create a forward definition and
1800 // remember where that forward def'n was seen (in case it never is defined).
1802 Entry.first = StructType::create(Context, Lex.getStrVal());
1803 Entry.second = Lex.getLoc();
1805 Result = Entry.first;
1810 case lltok::LocalVarID: {
1812 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1814 // If the type hasn't been defined yet, create a forward definition and
1815 // remember where that forward def'n was seen (in case it never is defined).
1817 Entry.first = StructType::create(Context);
1818 Entry.second = Lex.getLoc();
1820 Result = Entry.first;
1826 // Parse the type suffixes.
1828 switch (Lex.getKind()) {
1831 if (!AllowVoid && Result->isVoidTy())
1832 return Error(TypeLoc, "void type only allowed for function results");
1835 // Type ::= Type '*'
1837 if (Result->isLabelTy())
1838 return TokError("basic block pointers are invalid");
1839 if (Result->isVoidTy())
1840 return TokError("pointers to void are invalid - use i8* instead");
1841 if (!PointerType::isValidElementType(Result))
1842 return TokError("pointer to this type is invalid");
1843 Result = PointerType::getUnqual(Result);
1847 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1848 case lltok::kw_addrspace: {
1849 if (Result->isLabelTy())
1850 return TokError("basic block pointers are invalid");
1851 if (Result->isVoidTy())
1852 return TokError("pointers to void are invalid; use i8* instead");
1853 if (!PointerType::isValidElementType(Result))
1854 return TokError("pointer to this type is invalid");
1856 if (ParseOptionalAddrSpace(AddrSpace) ||
1857 ParseToken(lltok::star, "expected '*' in address space"))
1860 Result = PointerType::get(Result, AddrSpace);
1864 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1866 if (ParseFunctionType(Result))
1873 /// ParseParameterList
1875 /// ::= '(' Arg (',' Arg)* ')'
1877 /// ::= Type OptionalAttributes Value OptionalAttributes
1878 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1879 PerFunctionState &PFS, bool IsMustTailCall,
1880 bool InVarArgsFunc) {
1881 if (ParseToken(lltok::lparen, "expected '(' in call"))
1884 unsigned AttrIndex = 1;
1885 while (Lex.getKind() != lltok::rparen) {
1886 // If this isn't the first argument, we need a comma.
1887 if (!ArgList.empty() &&
1888 ParseToken(lltok::comma, "expected ',' in argument list"))
1891 // Parse an ellipsis if this is a musttail call in a variadic function.
1892 if (Lex.getKind() == lltok::dotdotdot) {
1893 const char *Msg = "unexpected ellipsis in argument list for ";
1894 if (!IsMustTailCall)
1895 return TokError(Twine(Msg) + "non-musttail call");
1897 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1898 Lex.Lex(); // Lex the '...', it is purely for readability.
1899 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1902 // Parse the argument.
1904 Type *ArgTy = nullptr;
1905 AttrBuilder ArgAttrs;
1907 if (ParseType(ArgTy, ArgLoc))
1910 if (ArgTy->isMetadataTy()) {
1911 if (ParseMetadataAsValue(V, PFS))
1914 // Otherwise, handle normal operands.
1915 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1918 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1923 if (IsMustTailCall && InVarArgsFunc)
1924 return TokError("expected '...' at end of argument list for musttail call "
1925 "in varargs function");
1927 Lex.Lex(); // Lex the ')'.
1933 /// ParseArgumentList - Parse the argument list for a function type or function
1935 /// ::= '(' ArgTypeListI ')'
1939 /// ::= ArgTypeList ',' '...'
1940 /// ::= ArgType (',' ArgType)*
1942 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1945 assert(Lex.getKind() == lltok::lparen);
1946 Lex.Lex(); // eat the (.
1948 if (Lex.getKind() == lltok::rparen) {
1950 } else if (Lex.getKind() == lltok::dotdotdot) {
1954 LocTy TypeLoc = Lex.getLoc();
1955 Type *ArgTy = nullptr;
1959 if (ParseType(ArgTy) ||
1960 ParseOptionalParamAttrs(Attrs)) return true;
1962 if (ArgTy->isVoidTy())
1963 return Error(TypeLoc, "argument can not have void type");
1965 if (Lex.getKind() == lltok::LocalVar) {
1966 Name = Lex.getStrVal();
1970 if (!FunctionType::isValidArgumentType(ArgTy))
1971 return Error(TypeLoc, "invalid type for function argument");
1973 unsigned AttrIndex = 1;
1974 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1975 AttrIndex++, Attrs),
1978 while (EatIfPresent(lltok::comma)) {
1979 // Handle ... at end of arg list.
1980 if (EatIfPresent(lltok::dotdotdot)) {
1985 // Otherwise must be an argument type.
1986 TypeLoc = Lex.getLoc();
1987 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1989 if (ArgTy->isVoidTy())
1990 return Error(TypeLoc, "argument can not have void type");
1992 if (Lex.getKind() == lltok::LocalVar) {
1993 Name = Lex.getStrVal();
1999 if (!ArgTy->isFirstClassType())
2000 return Error(TypeLoc, "invalid type for function argument");
2002 ArgList.emplace_back(
2004 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2009 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2012 /// ParseFunctionType
2013 /// ::= Type ArgumentList OptionalAttrs
2014 bool LLParser::ParseFunctionType(Type *&Result) {
2015 assert(Lex.getKind() == lltok::lparen);
2017 if (!FunctionType::isValidReturnType(Result))
2018 return TokError("invalid function return type");
2020 SmallVector<ArgInfo, 8> ArgList;
2022 if (ParseArgumentList(ArgList, isVarArg))
2025 // Reject names on the arguments lists.
2026 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2027 if (!ArgList[i].Name.empty())
2028 return Error(ArgList[i].Loc, "argument name invalid in function type");
2029 if (ArgList[i].Attrs.hasAttributes(i + 1))
2030 return Error(ArgList[i].Loc,
2031 "argument attributes invalid in function type");
2034 SmallVector<Type*, 16> ArgListTy;
2035 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2036 ArgListTy.push_back(ArgList[i].Ty);
2038 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2042 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2044 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2045 SmallVector<Type*, 8> Elts;
2046 if (ParseStructBody(Elts)) return true;
2048 Result = StructType::get(Context, Elts, Packed);
2052 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2053 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2054 std::pair<Type*, LocTy> &Entry,
2056 // If the type was already defined, diagnose the redefinition.
2057 if (Entry.first && !Entry.second.isValid())
2058 return Error(TypeLoc, "redefinition of type");
2060 // If we have opaque, just return without filling in the definition for the
2061 // struct. This counts as a definition as far as the .ll file goes.
2062 if (EatIfPresent(lltok::kw_opaque)) {
2063 // This type is being defined, so clear the location to indicate this.
2064 Entry.second = SMLoc();
2066 // If this type number has never been uttered, create it.
2068 Entry.first = StructType::create(Context, Name);
2069 ResultTy = Entry.first;
2073 // If the type starts with '<', then it is either a packed struct or a vector.
2074 bool isPacked = EatIfPresent(lltok::less);
2076 // If we don't have a struct, then we have a random type alias, which we
2077 // accept for compatibility with old files. These types are not allowed to be
2078 // forward referenced and not allowed to be recursive.
2079 if (Lex.getKind() != lltok::lbrace) {
2081 return Error(TypeLoc, "forward references to non-struct type");
2085 return ParseArrayVectorType(ResultTy, true);
2086 return ParseType(ResultTy);
2089 // This type is being defined, so clear the location to indicate this.
2090 Entry.second = SMLoc();
2092 // If this type number has never been uttered, create it.
2094 Entry.first = StructType::create(Context, Name);
2096 StructType *STy = cast<StructType>(Entry.first);
2098 SmallVector<Type*, 8> Body;
2099 if (ParseStructBody(Body) ||
2100 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2103 STy->setBody(Body, isPacked);
2109 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2112 /// ::= '{' Type (',' Type)* '}'
2113 /// ::= '<' '{' '}' '>'
2114 /// ::= '<' '{' Type (',' Type)* '}' '>'
2115 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2116 assert(Lex.getKind() == lltok::lbrace);
2117 Lex.Lex(); // Consume the '{'
2119 // Handle the empty struct.
2120 if (EatIfPresent(lltok::rbrace))
2123 LocTy EltTyLoc = Lex.getLoc();
2125 if (ParseType(Ty)) return true;
2128 if (!StructType::isValidElementType(Ty))
2129 return Error(EltTyLoc, "invalid element type for struct");
2131 while (EatIfPresent(lltok::comma)) {
2132 EltTyLoc = Lex.getLoc();
2133 if (ParseType(Ty)) return true;
2135 if (!StructType::isValidElementType(Ty))
2136 return Error(EltTyLoc, "invalid element type for struct");
2141 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2144 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2145 /// token has already been consumed.
2147 /// ::= '[' APSINTVAL 'x' Types ']'
2148 /// ::= '<' APSINTVAL 'x' Types '>'
2149 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2150 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2151 Lex.getAPSIntVal().getBitWidth() > 64)
2152 return TokError("expected number in address space");
2154 LocTy SizeLoc = Lex.getLoc();
2155 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2158 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2161 LocTy TypeLoc = Lex.getLoc();
2162 Type *EltTy = nullptr;
2163 if (ParseType(EltTy)) return true;
2165 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2166 "expected end of sequential type"))
2171 return Error(SizeLoc, "zero element vector is illegal");
2172 if ((unsigned)Size != Size)
2173 return Error(SizeLoc, "size too large for vector");
2174 if (!VectorType::isValidElementType(EltTy))
2175 return Error(TypeLoc, "invalid vector element type");
2176 Result = VectorType::get(EltTy, unsigned(Size));
2178 if (!ArrayType::isValidElementType(EltTy))
2179 return Error(TypeLoc, "invalid array element type");
2180 Result = ArrayType::get(EltTy, Size);
2185 //===----------------------------------------------------------------------===//
2186 // Function Semantic Analysis.
2187 //===----------------------------------------------------------------------===//
2189 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2191 : P(p), F(f), FunctionNumber(functionNumber) {
2193 // Insert unnamed arguments into the NumberedVals list.
2194 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2197 NumberedVals.push_back(AI);
2200 LLParser::PerFunctionState::~PerFunctionState() {
2201 // If there were any forward referenced non-basicblock values, delete them.
2202 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2203 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2204 if (!isa<BasicBlock>(I->second.first)) {
2205 I->second.first->replaceAllUsesWith(
2206 UndefValue::get(I->second.first->getType()));
2207 delete I->second.first;
2208 I->second.first = nullptr;
2211 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2212 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2213 if (!isa<BasicBlock>(I->second.first)) {
2214 I->second.first->replaceAllUsesWith(
2215 UndefValue::get(I->second.first->getType()));
2216 delete I->second.first;
2217 I->second.first = nullptr;
2221 bool LLParser::PerFunctionState::FinishFunction() {
2222 if (!ForwardRefVals.empty())
2223 return P.Error(ForwardRefVals.begin()->second.second,
2224 "use of undefined value '%" + ForwardRefVals.begin()->first +
2226 if (!ForwardRefValIDs.empty())
2227 return P.Error(ForwardRefValIDs.begin()->second.second,
2228 "use of undefined value '%" +
2229 Twine(ForwardRefValIDs.begin()->first) + "'");
2234 /// GetVal - Get a value with the specified name or ID, creating a
2235 /// forward reference record if needed. This can return null if the value
2236 /// exists but does not have the right type.
2237 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2238 LocTy Loc, OperatorConstraint OC) {
2239 // Look this name up in the normal function symbol table.
2240 Value *Val = F.getValueSymbolTable().lookup(Name);
2242 // If this is a forward reference for the value, see if we already created a
2243 // forward ref record.
2245 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2246 I = ForwardRefVals.find(Name);
2247 if (I != ForwardRefVals.end())
2248 Val = I->second.first;
2251 // If we have the value in the symbol table or fwd-ref table, return it.
2253 // Check operator constraints.
2259 if (!isa<CatchPadInst>(Val)) {
2260 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2265 if (!isa<CleanupPadInst>(Val)) {
2266 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2271 if (Val->getType() == Ty) return Val;
2272 if (Ty->isLabelTy())
2273 P.Error(Loc, "'%" + Name + "' is not a basic block");
2275 P.Error(Loc, "'%" + Name + "' defined with type '" +
2276 getTypeString(Val->getType()) + "'");
2280 // Don't make placeholders with invalid type.
2281 if (!Ty->isFirstClassType()) {
2282 P.Error(Loc, "invalid use of a non-first-class type");
2286 // Otherwise, create a new forward reference for this value and remember it.
2288 if (Ty->isLabelTy()) {
2290 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2292 FwdVal = new Argument(Ty, Name);
2296 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2300 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2303 llvm_unreachable("unexpected constraint");
2307 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2311 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2312 OperatorConstraint OC) {
2313 // Look this name up in the normal function symbol table.
2314 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2316 // If this is a forward reference for the value, see if we already created a
2317 // forward ref record.
2319 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2320 I = ForwardRefValIDs.find(ID);
2321 if (I != ForwardRefValIDs.end())
2322 Val = I->second.first;
2325 // If we have the value in the symbol table or fwd-ref table, return it.
2327 // Check operator constraint.
2333 if (!isa<CatchPadInst>(Val)) {
2334 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2339 if (!isa<CleanupPadInst>(Val)) {
2340 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2345 if (Val->getType() == Ty) return Val;
2346 if (Ty->isLabelTy())
2347 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2349 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2350 getTypeString(Val->getType()) + "'");
2354 if (!Ty->isFirstClassType()) {
2355 P.Error(Loc, "invalid use of a non-first-class type");
2359 // Otherwise, create a new forward reference for this value and remember it.
2361 if (Ty->isLabelTy()) {
2363 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2365 FwdVal = new Argument(Ty);
2369 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2372 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2375 llvm_unreachable("unexpected constraint");
2379 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2383 /// SetInstName - After an instruction is parsed and inserted into its
2384 /// basic block, this installs its name.
2385 bool LLParser::PerFunctionState::SetInstName(int NameID,
2386 const std::string &NameStr,
2387 LocTy NameLoc, Instruction *Inst) {
2388 // If this instruction has void type, it cannot have a name or ID specified.
2389 if (Inst->getType()->isVoidTy()) {
2390 if (NameID != -1 || !NameStr.empty())
2391 return P.Error(NameLoc, "instructions returning void cannot have a name");
2395 // If this was a numbered instruction, verify that the instruction is the
2396 // expected value and resolve any forward references.
2397 if (NameStr.empty()) {
2398 // If neither a name nor an ID was specified, just use the next ID.
2400 NameID = NumberedVals.size();
2402 if (unsigned(NameID) != NumberedVals.size())
2403 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2404 Twine(NumberedVals.size()) + "'");
2406 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2407 ForwardRefValIDs.find(NameID);
2408 if (FI != ForwardRefValIDs.end()) {
2409 Value *Sentinel = FI->second.first;
2410 if (Sentinel->getType() != Inst->getType())
2411 return P.Error(NameLoc, "instruction forward referenced with type '" +
2412 getTypeString(FI->second.first->getType()) + "'");
2413 // Check operator constraints. We only put cleanuppads or catchpads in
2414 // the forward value map if the value is constrained to match.
2415 if (isa<CatchPadInst>(Sentinel)) {
2416 if (!isa<CatchPadInst>(Inst))
2417 return P.Error(FI->second.second,
2418 "'%" + Twine(NameID) + "' is not a catchpad");
2419 } else if (isa<CleanupPadInst>(Sentinel)) {
2420 if (!isa<CleanupPadInst>(Inst))
2421 return P.Error(FI->second.second,
2422 "'%" + Twine(NameID) + "' is not a cleanuppad");
2425 Sentinel->replaceAllUsesWith(Inst);
2427 ForwardRefValIDs.erase(FI);
2430 NumberedVals.push_back(Inst);
2434 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2435 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2436 FI = ForwardRefVals.find(NameStr);
2437 if (FI != ForwardRefVals.end()) {
2438 Value *Sentinel = FI->second.first;
2439 if (Sentinel->getType() != Inst->getType())
2440 return P.Error(NameLoc, "instruction forward referenced with type '" +
2441 getTypeString(FI->second.first->getType()) + "'");
2442 // Check operator constraints. We only put cleanuppads or catchpads in
2443 // the forward value map if the value is constrained to match.
2444 if (isa<CatchPadInst>(Sentinel)) {
2445 if (!isa<CatchPadInst>(Inst))
2446 return P.Error(FI->second.second,
2447 "'%" + NameStr + "' is not a catchpad");
2448 } else if (isa<CleanupPadInst>(Sentinel)) {
2449 if (!isa<CleanupPadInst>(Inst))
2450 return P.Error(FI->second.second,
2451 "'%" + NameStr + "' is not a cleanuppad");
2454 Sentinel->replaceAllUsesWith(Inst);
2456 ForwardRefVals.erase(FI);
2459 // Set the name on the instruction.
2460 Inst->setName(NameStr);
2462 if (Inst->getName() != NameStr)
2463 return P.Error(NameLoc, "multiple definition of local value named '" +
2468 /// GetBB - Get a basic block with the specified name or ID, creating a
2469 /// forward reference record if needed.
2470 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2472 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2473 Type::getLabelTy(F.getContext()), Loc));
2476 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2477 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2478 Type::getLabelTy(F.getContext()), Loc));
2481 /// DefineBB - Define the specified basic block, which is either named or
2482 /// unnamed. If there is an error, this returns null otherwise it returns
2483 /// the block being defined.
2484 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2488 BB = GetBB(NumberedVals.size(), Loc);
2490 BB = GetBB(Name, Loc);
2491 if (!BB) return nullptr; // Already diagnosed error.
2493 // Move the block to the end of the function. Forward ref'd blocks are
2494 // inserted wherever they happen to be referenced.
2495 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2497 // Remove the block from forward ref sets.
2499 ForwardRefValIDs.erase(NumberedVals.size());
2500 NumberedVals.push_back(BB);
2502 // BB forward references are already in the function symbol table.
2503 ForwardRefVals.erase(Name);
2509 //===----------------------------------------------------------------------===//
2511 //===----------------------------------------------------------------------===//
2513 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2514 /// type implied. For example, if we parse "4" we don't know what integer type
2515 /// it has. The value will later be combined with its type and checked for
2516 /// sanity. PFS is used to convert function-local operands of metadata (since
2517 /// metadata operands are not just parsed here but also converted to values).
2518 /// PFS can be null when we are not parsing metadata values inside a function.
2519 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2520 ID.Loc = Lex.getLoc();
2521 switch (Lex.getKind()) {
2522 default: return TokError("expected value token");
2523 case lltok::GlobalID: // @42
2524 ID.UIntVal = Lex.getUIntVal();
2525 ID.Kind = ValID::t_GlobalID;
2527 case lltok::GlobalVar: // @foo
2528 ID.StrVal = Lex.getStrVal();
2529 ID.Kind = ValID::t_GlobalName;
2531 case lltok::LocalVarID: // %42
2532 ID.UIntVal = Lex.getUIntVal();
2533 ID.Kind = ValID::t_LocalID;
2535 case lltok::LocalVar: // %foo
2536 ID.StrVal = Lex.getStrVal();
2537 ID.Kind = ValID::t_LocalName;
2540 ID.APSIntVal = Lex.getAPSIntVal();
2541 ID.Kind = ValID::t_APSInt;
2543 case lltok::APFloat:
2544 ID.APFloatVal = Lex.getAPFloatVal();
2545 ID.Kind = ValID::t_APFloat;
2547 case lltok::kw_true:
2548 ID.ConstantVal = ConstantInt::getTrue(Context);
2549 ID.Kind = ValID::t_Constant;
2551 case lltok::kw_false:
2552 ID.ConstantVal = ConstantInt::getFalse(Context);
2553 ID.Kind = ValID::t_Constant;
2555 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2556 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2557 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2559 case lltok::lbrace: {
2560 // ValID ::= '{' ConstVector '}'
2562 SmallVector<Constant*, 16> Elts;
2563 if (ParseGlobalValueVector(Elts) ||
2564 ParseToken(lltok::rbrace, "expected end of struct constant"))
2567 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2568 ID.UIntVal = Elts.size();
2569 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2570 Elts.size() * sizeof(Elts[0]));
2571 ID.Kind = ValID::t_ConstantStruct;
2575 // ValID ::= '<' ConstVector '>' --> Vector.
2576 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2578 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2580 SmallVector<Constant*, 16> Elts;
2581 LocTy FirstEltLoc = Lex.getLoc();
2582 if (ParseGlobalValueVector(Elts) ||
2584 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2585 ParseToken(lltok::greater, "expected end of constant"))
2588 if (isPackedStruct) {
2589 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2590 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2591 Elts.size() * sizeof(Elts[0]));
2592 ID.UIntVal = Elts.size();
2593 ID.Kind = ValID::t_PackedConstantStruct;
2598 return Error(ID.Loc, "constant vector must not be empty");
2600 if (!Elts[0]->getType()->isIntegerTy() &&
2601 !Elts[0]->getType()->isFloatingPointTy() &&
2602 !Elts[0]->getType()->isPointerTy())
2603 return Error(FirstEltLoc,
2604 "vector elements must have integer, pointer or floating point type");
2606 // Verify that all the vector elements have the same type.
2607 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2608 if (Elts[i]->getType() != Elts[0]->getType())
2609 return Error(FirstEltLoc,
2610 "vector element #" + Twine(i) +
2611 " is not of type '" + getTypeString(Elts[0]->getType()));
2613 ID.ConstantVal = ConstantVector::get(Elts);
2614 ID.Kind = ValID::t_Constant;
2617 case lltok::lsquare: { // Array Constant
2619 SmallVector<Constant*, 16> Elts;
2620 LocTy FirstEltLoc = Lex.getLoc();
2621 if (ParseGlobalValueVector(Elts) ||
2622 ParseToken(lltok::rsquare, "expected end of array constant"))
2625 // Handle empty element.
2627 // Use undef instead of an array because it's inconvenient to determine
2628 // the element type at this point, there being no elements to examine.
2629 ID.Kind = ValID::t_EmptyArray;
2633 if (!Elts[0]->getType()->isFirstClassType())
2634 return Error(FirstEltLoc, "invalid array element type: " +
2635 getTypeString(Elts[0]->getType()));
2637 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2639 // Verify all elements are correct type!
2640 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2641 if (Elts[i]->getType() != Elts[0]->getType())
2642 return Error(FirstEltLoc,
2643 "array element #" + Twine(i) +
2644 " is not of type '" + getTypeString(Elts[0]->getType()));
2647 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2648 ID.Kind = ValID::t_Constant;
2651 case lltok::kw_c: // c "foo"
2653 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2655 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2656 ID.Kind = ValID::t_Constant;
2659 case lltok::kw_asm: {
2660 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2662 bool HasSideEffect, AlignStack, AsmDialect;
2664 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2665 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2666 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2667 ParseStringConstant(ID.StrVal) ||
2668 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2669 ParseToken(lltok::StringConstant, "expected constraint string"))
2671 ID.StrVal2 = Lex.getStrVal();
2672 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2673 (unsigned(AsmDialect)<<2);
2674 ID.Kind = ValID::t_InlineAsm;
2678 case lltok::kw_blockaddress: {
2679 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2684 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2686 ParseToken(lltok::comma, "expected comma in block address expression")||
2687 ParseValID(Label) ||
2688 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2691 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2692 return Error(Fn.Loc, "expected function name in blockaddress");
2693 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2694 return Error(Label.Loc, "expected basic block name in blockaddress");
2696 // Try to find the function (but skip it if it's forward-referenced).
2697 GlobalValue *GV = nullptr;
2698 if (Fn.Kind == ValID::t_GlobalID) {
2699 if (Fn.UIntVal < NumberedVals.size())
2700 GV = NumberedVals[Fn.UIntVal];
2701 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2702 GV = M->getNamedValue(Fn.StrVal);
2704 Function *F = nullptr;
2706 // Confirm that it's actually a function with a definition.
2707 if (!isa<Function>(GV))
2708 return Error(Fn.Loc, "expected function name in blockaddress");
2709 F = cast<Function>(GV);
2710 if (F->isDeclaration())
2711 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2715 // Make a global variable as a placeholder for this reference.
2716 GlobalValue *&FwdRef =
2717 ForwardRefBlockAddresses.insert(std::make_pair(
2719 std::map<ValID, GlobalValue *>()))
2720 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2723 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2724 GlobalValue::InternalLinkage, nullptr, "");
2725 ID.ConstantVal = FwdRef;
2726 ID.Kind = ValID::t_Constant;
2730 // We found the function; now find the basic block. Don't use PFS, since we
2731 // might be inside a constant expression.
2733 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2734 if (Label.Kind == ValID::t_LocalID)
2735 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2737 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2739 return Error(Label.Loc, "referenced value is not a basic block");
2741 if (Label.Kind == ValID::t_LocalID)
2742 return Error(Label.Loc, "cannot take address of numeric label after "
2743 "the function is defined");
2744 BB = dyn_cast_or_null<BasicBlock>(
2745 F->getValueSymbolTable().lookup(Label.StrVal));
2747 return Error(Label.Loc, "referenced value is not a basic block");
2750 ID.ConstantVal = BlockAddress::get(F, BB);
2751 ID.Kind = ValID::t_Constant;
2755 case lltok::kw_trunc:
2756 case lltok::kw_zext:
2757 case lltok::kw_sext:
2758 case lltok::kw_fptrunc:
2759 case lltok::kw_fpext:
2760 case lltok::kw_bitcast:
2761 case lltok::kw_addrspacecast:
2762 case lltok::kw_uitofp:
2763 case lltok::kw_sitofp:
2764 case lltok::kw_fptoui:
2765 case lltok::kw_fptosi:
2766 case lltok::kw_inttoptr:
2767 case lltok::kw_ptrtoint: {
2768 unsigned Opc = Lex.getUIntVal();
2769 Type *DestTy = nullptr;
2772 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2773 ParseGlobalTypeAndValue(SrcVal) ||
2774 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2775 ParseType(DestTy) ||
2776 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2778 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2779 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2780 getTypeString(SrcVal->getType()) + "' to '" +
2781 getTypeString(DestTy) + "'");
2782 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2784 ID.Kind = ValID::t_Constant;
2787 case lltok::kw_extractvalue: {
2790 SmallVector<unsigned, 4> Indices;
2791 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2792 ParseGlobalTypeAndValue(Val) ||
2793 ParseIndexList(Indices) ||
2794 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2797 if (!Val->getType()->isAggregateType())
2798 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2799 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2800 return Error(ID.Loc, "invalid indices for extractvalue");
2801 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2802 ID.Kind = ValID::t_Constant;
2805 case lltok::kw_insertvalue: {
2807 Constant *Val0, *Val1;
2808 SmallVector<unsigned, 4> Indices;
2809 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2810 ParseGlobalTypeAndValue(Val0) ||
2811 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2812 ParseGlobalTypeAndValue(Val1) ||
2813 ParseIndexList(Indices) ||
2814 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2816 if (!Val0->getType()->isAggregateType())
2817 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2819 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2821 return Error(ID.Loc, "invalid indices for insertvalue");
2822 if (IndexedType != Val1->getType())
2823 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2824 getTypeString(Val1->getType()) +
2825 "' instead of '" + getTypeString(IndexedType) +
2827 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2828 ID.Kind = ValID::t_Constant;
2831 case lltok::kw_icmp:
2832 case lltok::kw_fcmp: {
2833 unsigned PredVal, Opc = Lex.getUIntVal();
2834 Constant *Val0, *Val1;
2836 if (ParseCmpPredicate(PredVal, Opc) ||
2837 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2838 ParseGlobalTypeAndValue(Val0) ||
2839 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2840 ParseGlobalTypeAndValue(Val1) ||
2841 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2844 if (Val0->getType() != Val1->getType())
2845 return Error(ID.Loc, "compare operands must have the same type");
2847 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2849 if (Opc == Instruction::FCmp) {
2850 if (!Val0->getType()->isFPOrFPVectorTy())
2851 return Error(ID.Loc, "fcmp requires floating point operands");
2852 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2854 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2855 if (!Val0->getType()->isIntOrIntVectorTy() &&
2856 !Val0->getType()->getScalarType()->isPointerTy())
2857 return Error(ID.Loc, "icmp requires pointer or integer operands");
2858 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2860 ID.Kind = ValID::t_Constant;
2864 // Binary Operators.
2866 case lltok::kw_fadd:
2868 case lltok::kw_fsub:
2870 case lltok::kw_fmul:
2871 case lltok::kw_udiv:
2872 case lltok::kw_sdiv:
2873 case lltok::kw_fdiv:
2874 case lltok::kw_urem:
2875 case lltok::kw_srem:
2876 case lltok::kw_frem:
2878 case lltok::kw_lshr:
2879 case lltok::kw_ashr: {
2883 unsigned Opc = Lex.getUIntVal();
2884 Constant *Val0, *Val1;
2886 LocTy ModifierLoc = Lex.getLoc();
2887 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2888 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2889 if (EatIfPresent(lltok::kw_nuw))
2891 if (EatIfPresent(lltok::kw_nsw)) {
2893 if (EatIfPresent(lltok::kw_nuw))
2896 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2897 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2898 if (EatIfPresent(lltok::kw_exact))
2901 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2902 ParseGlobalTypeAndValue(Val0) ||
2903 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2904 ParseGlobalTypeAndValue(Val1) ||
2905 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2907 if (Val0->getType() != Val1->getType())
2908 return Error(ID.Loc, "operands of constexpr must have same type");
2909 if (!Val0->getType()->isIntOrIntVectorTy()) {
2911 return Error(ModifierLoc, "nuw only applies to integer operations");
2913 return Error(ModifierLoc, "nsw only applies to integer operations");
2915 // Check that the type is valid for the operator.
2917 case Instruction::Add:
2918 case Instruction::Sub:
2919 case Instruction::Mul:
2920 case Instruction::UDiv:
2921 case Instruction::SDiv:
2922 case Instruction::URem:
2923 case Instruction::SRem:
2924 case Instruction::Shl:
2925 case Instruction::AShr:
2926 case Instruction::LShr:
2927 if (!Val0->getType()->isIntOrIntVectorTy())
2928 return Error(ID.Loc, "constexpr requires integer operands");
2930 case Instruction::FAdd:
2931 case Instruction::FSub:
2932 case Instruction::FMul:
2933 case Instruction::FDiv:
2934 case Instruction::FRem:
2935 if (!Val0->getType()->isFPOrFPVectorTy())
2936 return Error(ID.Loc, "constexpr requires fp operands");
2938 default: llvm_unreachable("Unknown binary operator!");
2941 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2942 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2943 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2944 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2946 ID.Kind = ValID::t_Constant;
2950 // Logical Operations
2953 case lltok::kw_xor: {
2954 unsigned Opc = Lex.getUIntVal();
2955 Constant *Val0, *Val1;
2957 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2958 ParseGlobalTypeAndValue(Val0) ||
2959 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2960 ParseGlobalTypeAndValue(Val1) ||
2961 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2963 if (Val0->getType() != Val1->getType())
2964 return Error(ID.Loc, "operands of constexpr must have same type");
2965 if (!Val0->getType()->isIntOrIntVectorTy())
2966 return Error(ID.Loc,
2967 "constexpr requires integer or integer vector operands");
2968 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2969 ID.Kind = ValID::t_Constant;
2973 case lltok::kw_getelementptr:
2974 case lltok::kw_shufflevector:
2975 case lltok::kw_insertelement:
2976 case lltok::kw_extractelement:
2977 case lltok::kw_select: {
2978 unsigned Opc = Lex.getUIntVal();
2979 SmallVector<Constant*, 16> Elts;
2980 bool InBounds = false;
2984 if (Opc == Instruction::GetElementPtr)
2985 InBounds = EatIfPresent(lltok::kw_inbounds);
2987 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2990 LocTy ExplicitTypeLoc = Lex.getLoc();
2991 if (Opc == Instruction::GetElementPtr) {
2992 if (ParseType(Ty) ||
2993 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2997 if (ParseGlobalValueVector(Elts) ||
2998 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3001 if (Opc == Instruction::GetElementPtr) {
3002 if (Elts.size() == 0 ||
3003 !Elts[0]->getType()->getScalarType()->isPointerTy())
3004 return Error(ID.Loc, "base of getelementptr must be a pointer");
3006 Type *BaseType = Elts[0]->getType();
3007 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3008 if (Ty != BasePointerType->getElementType())
3011 "explicit pointee type doesn't match operand's pointee type");
3013 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3014 for (Constant *Val : Indices) {
3015 Type *ValTy = Val->getType();
3016 if (!ValTy->getScalarType()->isIntegerTy())
3017 return Error(ID.Loc, "getelementptr index must be an integer");
3018 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3019 return Error(ID.Loc, "getelementptr index type missmatch");
3020 if (ValTy->isVectorTy()) {
3021 unsigned ValNumEl = ValTy->getVectorNumElements();
3022 unsigned PtrNumEl = BaseType->getVectorNumElements();
3023 if (ValNumEl != PtrNumEl)
3026 "getelementptr vector index has a wrong number of elements");
3030 SmallPtrSet<Type*, 4> Visited;
3031 if (!Indices.empty() && !Ty->isSized(&Visited))
3032 return Error(ID.Loc, "base element of getelementptr must be sized");
3034 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3035 return Error(ID.Loc, "invalid getelementptr indices");
3037 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3038 } else if (Opc == Instruction::Select) {
3039 if (Elts.size() != 3)
3040 return Error(ID.Loc, "expected three operands to select");
3041 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3043 return Error(ID.Loc, Reason);
3044 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3045 } else if (Opc == Instruction::ShuffleVector) {
3046 if (Elts.size() != 3)
3047 return Error(ID.Loc, "expected three operands to shufflevector");
3048 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3049 return Error(ID.Loc, "invalid operands to shufflevector");
3051 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3052 } else if (Opc == Instruction::ExtractElement) {
3053 if (Elts.size() != 2)
3054 return Error(ID.Loc, "expected two operands to extractelement");
3055 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3056 return Error(ID.Loc, "invalid extractelement operands");
3057 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3059 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3060 if (Elts.size() != 3)
3061 return Error(ID.Loc, "expected three operands to insertelement");
3062 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3063 return Error(ID.Loc, "invalid insertelement operands");
3065 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3068 ID.Kind = ValID::t_Constant;
3077 /// ParseGlobalValue - Parse a global value with the specified type.
3078 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3082 bool Parsed = ParseValID(ID) ||
3083 ConvertValIDToValue(Ty, ID, V, nullptr);
3084 if (V && !(C = dyn_cast<Constant>(V)))
3085 return Error(ID.Loc, "global values must be constants");
3089 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3091 return ParseType(Ty) ||
3092 ParseGlobalValue(Ty, V);
3095 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3098 LocTy KwLoc = Lex.getLoc();
3099 if (!EatIfPresent(lltok::kw_comdat))
3102 if (EatIfPresent(lltok::lparen)) {
3103 if (Lex.getKind() != lltok::ComdatVar)
3104 return TokError("expected comdat variable");
3105 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3107 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3110 if (GlobalName.empty())
3111 return TokError("comdat cannot be unnamed");
3112 C = getComdat(GlobalName, KwLoc);
3118 /// ParseGlobalValueVector
3120 /// ::= TypeAndValue (',' TypeAndValue)*
3121 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3123 if (Lex.getKind() == lltok::rbrace ||
3124 Lex.getKind() == lltok::rsquare ||
3125 Lex.getKind() == lltok::greater ||
3126 Lex.getKind() == lltok::rparen)
3130 if (ParseGlobalTypeAndValue(C)) return true;
3133 while (EatIfPresent(lltok::comma)) {
3134 if (ParseGlobalTypeAndValue(C)) return true;
3141 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3142 SmallVector<Metadata *, 16> Elts;
3143 if (ParseMDNodeVector(Elts))
3146 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3153 /// ::= !DILocation(...)
3154 bool LLParser::ParseMDNode(MDNode *&N) {
3155 if (Lex.getKind() == lltok::MetadataVar)
3156 return ParseSpecializedMDNode(N);
3158 return ParseToken(lltok::exclaim, "expected '!' here") ||
3162 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3164 if (Lex.getKind() == lltok::lbrace)
3165 return ParseMDTuple(N);
3168 return ParseMDNodeID(N);
3173 /// Structure to represent an optional metadata field.
3174 template <class FieldTy> struct MDFieldImpl {
3175 typedef MDFieldImpl ImplTy;
3179 void assign(FieldTy Val) {
3181 this->Val = std::move(Val);
3184 explicit MDFieldImpl(FieldTy Default)
3185 : Val(std::move(Default)), Seen(false) {}
3188 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3191 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3192 : ImplTy(Default), Max(Max) {}
3194 struct LineField : public MDUnsignedField {
3195 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3197 struct ColumnField : public MDUnsignedField {
3198 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3200 struct DwarfTagField : public MDUnsignedField {
3201 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3202 DwarfTagField(dwarf::Tag DefaultTag)
3203 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3205 struct DwarfAttEncodingField : public MDUnsignedField {
3206 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3208 struct DwarfVirtualityField : public MDUnsignedField {
3209 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3211 struct DwarfLangField : public MDUnsignedField {
3212 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3215 struct DIFlagField : public MDUnsignedField {
3216 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3219 struct MDSignedField : public MDFieldImpl<int64_t> {
3223 MDSignedField(int64_t Default = 0)
3224 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3225 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3226 : ImplTy(Default), Min(Min), Max(Max) {}
3229 struct MDBoolField : public MDFieldImpl<bool> {
3230 MDBoolField(bool Default = false) : ImplTy(Default) {}
3232 struct MDField : public MDFieldImpl<Metadata *> {
3235 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3237 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3238 MDConstant() : ImplTy(nullptr) {}
3240 struct MDStringField : public MDFieldImpl<MDString *> {
3242 MDStringField(bool AllowEmpty = true)
3243 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3245 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3246 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3254 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3255 MDUnsignedField &Result) {
3256 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3257 return TokError("expected unsigned integer");
3259 auto &U = Lex.getAPSIntVal();
3260 if (U.ugt(Result.Max))
3261 return TokError("value for '" + Name + "' too large, limit is " +
3263 Result.assign(U.getZExtValue());
3264 assert(Result.Val <= Result.Max && "Expected value in range");
3270 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3271 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3274 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3275 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3279 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3280 if (Lex.getKind() == lltok::APSInt)
3281 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3283 if (Lex.getKind() != lltok::DwarfTag)
3284 return TokError("expected DWARF tag");
3286 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3287 if (Tag == dwarf::DW_TAG_invalid)
3288 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3289 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3297 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3298 DwarfVirtualityField &Result) {
3299 if (Lex.getKind() == lltok::APSInt)
3300 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3302 if (Lex.getKind() != lltok::DwarfVirtuality)
3303 return TokError("expected DWARF virtuality code");
3305 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3307 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3308 Lex.getStrVal() + "'");
3309 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3310 Result.assign(Virtuality);
3316 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3317 if (Lex.getKind() == lltok::APSInt)
3318 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3320 if (Lex.getKind() != lltok::DwarfLang)
3321 return TokError("expected DWARF language");
3323 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3325 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3327 assert(Lang <= Result.Max && "Expected valid DWARF language");
3328 Result.assign(Lang);
3334 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3335 DwarfAttEncodingField &Result) {
3336 if (Lex.getKind() == lltok::APSInt)
3337 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3339 if (Lex.getKind() != lltok::DwarfAttEncoding)
3340 return TokError("expected DWARF type attribute encoding");
3342 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3344 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3345 Lex.getStrVal() + "'");
3346 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3347 Result.assign(Encoding);
3354 /// ::= DIFlagVector
3355 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3357 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3358 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3360 // Parser for a single flag.
3361 auto parseFlag = [&](unsigned &Val) {
3362 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3363 return ParseUInt32(Val);
3365 if (Lex.getKind() != lltok::DIFlag)
3366 return TokError("expected debug info flag");
3368 Val = DINode::getFlag(Lex.getStrVal());
3370 return TokError(Twine("invalid debug info flag flag '") +
3371 Lex.getStrVal() + "'");
3376 // Parse the flags and combine them together.
3377 unsigned Combined = 0;
3383 } while (EatIfPresent(lltok::bar));
3385 Result.assign(Combined);
3390 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3391 MDSignedField &Result) {
3392 if (Lex.getKind() != lltok::APSInt)
3393 return TokError("expected signed integer");
3395 auto &S = Lex.getAPSIntVal();
3397 return TokError("value for '" + Name + "' too small, limit is " +
3400 return TokError("value for '" + Name + "' too large, limit is " +
3402 Result.assign(S.getExtValue());
3403 assert(Result.Val >= Result.Min && "Expected value in range");
3404 assert(Result.Val <= Result.Max && "Expected value in range");
3410 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3411 switch (Lex.getKind()) {
3413 return TokError("expected 'true' or 'false'");
3414 case lltok::kw_true:
3415 Result.assign(true);
3417 case lltok::kw_false:
3418 Result.assign(false);
3426 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3427 if (Lex.getKind() == lltok::kw_null) {
3428 if (!Result.AllowNull)
3429 return TokError("'" + Name + "' cannot be null");
3431 Result.assign(nullptr);
3436 if (ParseMetadata(MD, nullptr))
3444 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3446 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3449 Result.assign(cast<ConstantAsMetadata>(MD));
3454 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3455 LocTy ValueLoc = Lex.getLoc();
3457 if (ParseStringConstant(S))
3460 if (!Result.AllowEmpty && S.empty())
3461 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3463 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3468 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3469 SmallVector<Metadata *, 4> MDs;
3470 if (ParseMDNodeVector(MDs))
3473 Result.assign(std::move(MDs));
3477 } // end namespace llvm
3479 template <class ParserTy>
3480 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3482 if (Lex.getKind() != lltok::LabelStr)
3483 return TokError("expected field label here");
3487 } while (EatIfPresent(lltok::comma));
3492 template <class ParserTy>
3493 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3494 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3497 if (ParseToken(lltok::lparen, "expected '(' here"))
3499 if (Lex.getKind() != lltok::rparen)
3500 if (ParseMDFieldsImplBody(parseField))
3503 ClosingLoc = Lex.getLoc();
3504 return ParseToken(lltok::rparen, "expected ')' here");
3507 template <class FieldTy>
3508 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3510 return TokError("field '" + Name + "' cannot be specified more than once");
3512 LocTy Loc = Lex.getLoc();
3514 return ParseMDField(Loc, Name, Result);
3517 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3518 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3520 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3521 if (Lex.getStrVal() == #CLASS) \
3522 return Parse##CLASS(N, IsDistinct);
3523 #include "llvm/IR/Metadata.def"
3525 return TokError("expected metadata type");
3528 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3529 #define NOP_FIELD(NAME, TYPE, INIT)
3530 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3532 return Error(ClosingLoc, "missing required field '" #NAME "'");
3533 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3534 if (Lex.getStrVal() == #NAME) \
3535 return ParseMDField(#NAME, NAME);
3536 #define PARSE_MD_FIELDS() \
3537 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3540 if (ParseMDFieldsImpl([&]() -> bool { \
3541 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3542 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3545 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3547 #define GET_OR_DISTINCT(CLASS, ARGS) \
3548 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3550 /// ParseDILocationFields:
3551 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3552 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3553 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3554 OPTIONAL(line, LineField, ); \
3555 OPTIONAL(column, ColumnField, ); \
3556 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3557 OPTIONAL(inlinedAt, MDField, );
3559 #undef VISIT_MD_FIELDS
3561 Result = GET_OR_DISTINCT(
3562 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3566 /// ParseGenericDINode:
3567 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3568 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3569 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3570 REQUIRED(tag, DwarfTagField, ); \
3571 OPTIONAL(header, MDStringField, ); \
3572 OPTIONAL(operands, MDFieldList, );
3574 #undef VISIT_MD_FIELDS
3576 Result = GET_OR_DISTINCT(GenericDINode,
3577 (Context, tag.Val, header.Val, operands.Val));
3581 /// ParseDISubrange:
3582 /// ::= !DISubrange(count: 30, lowerBound: 2)
3583 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3584 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3585 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3586 OPTIONAL(lowerBound, MDSignedField, );
3588 #undef VISIT_MD_FIELDS
3590 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3594 /// ParseDIEnumerator:
3595 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3596 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3597 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3598 REQUIRED(name, MDStringField, ); \
3599 REQUIRED(value, MDSignedField, );
3601 #undef VISIT_MD_FIELDS
3603 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3607 /// ParseDIBasicType:
3608 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3609 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3610 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3611 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3612 OPTIONAL(name, MDStringField, ); \
3613 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3614 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3615 OPTIONAL(encoding, DwarfAttEncodingField, );
3617 #undef VISIT_MD_FIELDS
3619 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3620 align.Val, encoding.Val));
3624 /// ParseDIDerivedType:
3625 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3626 /// line: 7, scope: !1, baseType: !2, size: 32,
3627 /// align: 32, offset: 0, flags: 0, extraData: !3)
3628 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3629 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3630 REQUIRED(tag, DwarfTagField, ); \
3631 OPTIONAL(name, MDStringField, ); \
3632 OPTIONAL(file, MDField, ); \
3633 OPTIONAL(line, LineField, ); \
3634 OPTIONAL(scope, MDField, ); \
3635 REQUIRED(baseType, MDField, ); \
3636 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3637 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3638 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3639 OPTIONAL(flags, DIFlagField, ); \
3640 OPTIONAL(extraData, MDField, );
3642 #undef VISIT_MD_FIELDS
3644 Result = GET_OR_DISTINCT(DIDerivedType,
3645 (Context, tag.Val, name.Val, file.Val, line.Val,
3646 scope.Val, baseType.Val, size.Val, align.Val,
3647 offset.Val, flags.Val, extraData.Val));
3651 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3652 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3653 REQUIRED(tag, DwarfTagField, ); \
3654 OPTIONAL(name, MDStringField, ); \
3655 OPTIONAL(file, MDField, ); \
3656 OPTIONAL(line, LineField, ); \
3657 OPTIONAL(scope, MDField, ); \
3658 OPTIONAL(baseType, MDField, ); \
3659 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3660 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3661 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3662 OPTIONAL(flags, DIFlagField, ); \
3663 OPTIONAL(elements, MDField, ); \
3664 OPTIONAL(runtimeLang, DwarfLangField, ); \
3665 OPTIONAL(vtableHolder, MDField, ); \
3666 OPTIONAL(templateParams, MDField, ); \
3667 OPTIONAL(identifier, MDStringField, );
3669 #undef VISIT_MD_FIELDS
3671 Result = GET_OR_DISTINCT(
3673 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3674 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3675 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3679 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3680 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3681 OPTIONAL(flags, DIFlagField, ); \
3682 REQUIRED(types, MDField, );
3684 #undef VISIT_MD_FIELDS
3686 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3690 /// ParseDIFileType:
3691 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3692 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3693 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3694 REQUIRED(filename, MDStringField, ); \
3695 REQUIRED(directory, MDStringField, );
3697 #undef VISIT_MD_FIELDS
3699 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3703 /// ParseDICompileUnit:
3704 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3705 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3706 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3707 /// enums: !1, retainedTypes: !2, subprograms: !3,
3708 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3709 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3711 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3713 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3714 REQUIRED(language, DwarfLangField, ); \
3715 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3716 OPTIONAL(producer, MDStringField, ); \
3717 OPTIONAL(isOptimized, MDBoolField, ); \
3718 OPTIONAL(flags, MDStringField, ); \
3719 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3720 OPTIONAL(splitDebugFilename, MDStringField, ); \
3721 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3722 OPTIONAL(enums, MDField, ); \
3723 OPTIONAL(retainedTypes, MDField, ); \
3724 OPTIONAL(subprograms, MDField, ); \
3725 OPTIONAL(globals, MDField, ); \
3726 OPTIONAL(imports, MDField, ); \
3727 OPTIONAL(dwoId, MDUnsignedField, );
3729 #undef VISIT_MD_FIELDS
3731 Result = DICompileUnit::getDistinct(
3732 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3733 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3734 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3738 /// ParseDISubprogram:
3739 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3740 /// file: !1, line: 7, type: !2, isLocal: false,
3741 /// isDefinition: true, scopeLine: 8, containingType: !3,
3742 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3743 /// virtualIndex: 10, flags: 11,
3744 /// isOptimized: false, function: void ()* @_Z3foov,
3745 /// templateParams: !4, declaration: !5, variables: !6)
3746 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3747 auto Loc = Lex.getLoc();
3748 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3749 OPTIONAL(scope, MDField, ); \
3750 OPTIONAL(name, MDStringField, ); \
3751 OPTIONAL(linkageName, MDStringField, ); \
3752 OPTIONAL(file, MDField, ); \
3753 OPTIONAL(line, LineField, ); \
3754 OPTIONAL(type, MDField, ); \
3755 OPTIONAL(isLocal, MDBoolField, ); \
3756 OPTIONAL(isDefinition, MDBoolField, (true)); \
3757 OPTIONAL(scopeLine, LineField, ); \
3758 OPTIONAL(containingType, MDField, ); \
3759 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3760 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3761 OPTIONAL(flags, DIFlagField, ); \
3762 OPTIONAL(isOptimized, MDBoolField, ); \
3763 OPTIONAL(function, MDConstant, ); \
3764 OPTIONAL(templateParams, MDField, ); \
3765 OPTIONAL(declaration, MDField, ); \
3766 OPTIONAL(variables, MDField, );
3768 #undef VISIT_MD_FIELDS
3770 if (isDefinition.Val && !IsDistinct)
3773 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3775 Result = GET_OR_DISTINCT(
3776 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3777 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3778 scopeLine.Val, containingType.Val, virtuality.Val,
3779 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3780 templateParams.Val, declaration.Val, variables.Val));
3784 /// ParseDILexicalBlock:
3785 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3786 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3787 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3788 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3789 OPTIONAL(file, MDField, ); \
3790 OPTIONAL(line, LineField, ); \
3791 OPTIONAL(column, ColumnField, );
3793 #undef VISIT_MD_FIELDS
3795 Result = GET_OR_DISTINCT(
3796 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3800 /// ParseDILexicalBlockFile:
3801 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3802 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3803 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3804 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3805 OPTIONAL(file, MDField, ); \
3806 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3808 #undef VISIT_MD_FIELDS
3810 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3811 (Context, scope.Val, file.Val, discriminator.Val));
3815 /// ParseDINamespace:
3816 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3817 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3818 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3819 REQUIRED(scope, MDField, ); \
3820 OPTIONAL(file, MDField, ); \
3821 OPTIONAL(name, MDStringField, ); \
3822 OPTIONAL(line, LineField, );
3824 #undef VISIT_MD_FIELDS
3826 Result = GET_OR_DISTINCT(DINamespace,
3827 (Context, scope.Val, file.Val, name.Val, line.Val));
3832 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3833 /// includePath: "/usr/include", isysroot: "/")
3834 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3835 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3836 REQUIRED(scope, MDField, ); \
3837 REQUIRED(name, MDStringField, ); \
3838 OPTIONAL(configMacros, MDStringField, ); \
3839 OPTIONAL(includePath, MDStringField, ); \
3840 OPTIONAL(isysroot, MDStringField, );
3842 #undef VISIT_MD_FIELDS
3844 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3845 configMacros.Val, includePath.Val, isysroot.Val));
3849 /// ParseDITemplateTypeParameter:
3850 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3851 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3852 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3853 OPTIONAL(name, MDStringField, ); \
3854 REQUIRED(type, MDField, );
3856 #undef VISIT_MD_FIELDS
3859 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3863 /// ParseDITemplateValueParameter:
3864 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3865 /// name: "V", type: !1, value: i32 7)
3866 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3867 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3868 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3869 OPTIONAL(name, MDStringField, ); \
3870 OPTIONAL(type, MDField, ); \
3871 REQUIRED(value, MDField, );
3873 #undef VISIT_MD_FIELDS
3875 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3876 (Context, tag.Val, name.Val, type.Val, value.Val));
3880 /// ParseDIGlobalVariable:
3881 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3882 /// file: !1, line: 7, type: !2, isLocal: false,
3883 /// isDefinition: true, variable: i32* @foo,
3884 /// declaration: !3)
3885 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3886 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3887 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3888 OPTIONAL(scope, MDField, ); \
3889 OPTIONAL(linkageName, MDStringField, ); \
3890 OPTIONAL(file, MDField, ); \
3891 OPTIONAL(line, LineField, ); \
3892 OPTIONAL(type, MDField, ); \
3893 OPTIONAL(isLocal, MDBoolField, ); \
3894 OPTIONAL(isDefinition, MDBoolField, (true)); \
3895 OPTIONAL(variable, MDConstant, ); \
3896 OPTIONAL(declaration, MDField, );
3898 #undef VISIT_MD_FIELDS
3900 Result = GET_OR_DISTINCT(DIGlobalVariable,
3901 (Context, scope.Val, name.Val, linkageName.Val,
3902 file.Val, line.Val, type.Val, isLocal.Val,
3903 isDefinition.Val, variable.Val, declaration.Val));
3907 /// ParseDILocalVariable:
3908 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3909 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3910 /// ::= !DILocalVariable(scope: !0, name: "foo",
3911 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3912 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3913 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3914 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3915 OPTIONAL(name, MDStringField, ); \
3916 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3917 OPTIONAL(file, MDField, ); \
3918 OPTIONAL(line, LineField, ); \
3919 OPTIONAL(type, MDField, ); \
3920 OPTIONAL(flags, DIFlagField, );
3922 #undef VISIT_MD_FIELDS
3924 Result = GET_OR_DISTINCT(DILocalVariable,
3925 (Context, scope.Val, name.Val, file.Val, line.Val,
3926 type.Val, arg.Val, flags.Val));
3930 /// ParseDIExpression:
3931 /// ::= !DIExpression(0, 7, -1)
3932 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3933 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3936 if (ParseToken(lltok::lparen, "expected '(' here"))
3939 SmallVector<uint64_t, 8> Elements;
3940 if (Lex.getKind() != lltok::rparen)
3942 if (Lex.getKind() == lltok::DwarfOp) {
3943 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3945 Elements.push_back(Op);
3948 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3951 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3952 return TokError("expected unsigned integer");
3954 auto &U = Lex.getAPSIntVal();
3955 if (U.ugt(UINT64_MAX))
3956 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3957 Elements.push_back(U.getZExtValue());
3959 } while (EatIfPresent(lltok::comma));
3961 if (ParseToken(lltok::rparen, "expected ')' here"))
3964 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3968 /// ParseDIObjCProperty:
3969 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3970 /// getter: "getFoo", attributes: 7, type: !2)
3971 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3972 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3973 OPTIONAL(name, MDStringField, ); \
3974 OPTIONAL(file, MDField, ); \
3975 OPTIONAL(line, LineField, ); \
3976 OPTIONAL(setter, MDStringField, ); \
3977 OPTIONAL(getter, MDStringField, ); \
3978 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3979 OPTIONAL(type, MDField, );
3981 #undef VISIT_MD_FIELDS
3983 Result = GET_OR_DISTINCT(DIObjCProperty,
3984 (Context, name.Val, file.Val, line.Val, setter.Val,
3985 getter.Val, attributes.Val, type.Val));
3989 /// ParseDIImportedEntity:
3990 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3991 /// line: 7, name: "foo")
3992 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3993 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3994 REQUIRED(tag, DwarfTagField, ); \
3995 REQUIRED(scope, MDField, ); \
3996 OPTIONAL(entity, MDField, ); \
3997 OPTIONAL(line, LineField, ); \
3998 OPTIONAL(name, MDStringField, );
4000 #undef VISIT_MD_FIELDS
4002 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4003 entity.Val, line.Val, name.Val));
4007 #undef PARSE_MD_FIELD
4009 #undef REQUIRE_FIELD
4010 #undef DECLARE_FIELD
4012 /// ParseMetadataAsValue
4013 /// ::= metadata i32 %local
4014 /// ::= metadata i32 @global
4015 /// ::= metadata i32 7
4017 /// ::= metadata !{...}
4018 /// ::= metadata !"string"
4019 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4020 // Note: the type 'metadata' has already been parsed.
4022 if (ParseMetadata(MD, &PFS))
4025 V = MetadataAsValue::get(Context, MD);
4029 /// ParseValueAsMetadata
4033 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4034 PerFunctionState *PFS) {
4037 if (ParseType(Ty, TypeMsg, Loc))
4039 if (Ty->isMetadataTy())
4040 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4043 if (ParseValue(Ty, V, PFS))
4046 MD = ValueAsMetadata::get(V);
4057 /// ::= !DILocation(...)
4058 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4059 if (Lex.getKind() == lltok::MetadataVar) {
4061 if (ParseSpecializedMDNode(N))
4069 if (Lex.getKind() != lltok::exclaim)
4070 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4073 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4077 // ::= '!' STRINGCONSTANT
4078 if (Lex.getKind() == lltok::StringConstant) {
4080 if (ParseMDString(S))
4090 if (ParseMDNodeTail(N))
4097 //===----------------------------------------------------------------------===//
4098 // Function Parsing.
4099 //===----------------------------------------------------------------------===//
4101 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4102 PerFunctionState *PFS,
4103 OperatorConstraint OC) {
4104 if (Ty->isFunctionTy())
4105 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4107 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4110 return Error(ID.Loc, "Catchpad value required in this position");
4112 return Error(ID.Loc, "Cleanuppad value required in this position");
4114 llvm_unreachable("Unexpected constraint kind");
4119 case ValID::t_LocalID:
4120 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4121 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4122 return V == nullptr;
4123 case ValID::t_LocalName:
4124 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4125 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4126 return V == nullptr;
4127 case ValID::t_InlineAsm: {
4128 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4129 return Error(ID.Loc, "invalid type for inline asm constraint string");
4130 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4131 (ID.UIntVal >> 1) & 1,
4132 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4135 case ValID::t_GlobalName:
4136 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4137 return V == nullptr;
4138 case ValID::t_GlobalID:
4139 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4140 return V == nullptr;
4141 case ValID::t_APSInt:
4142 if (!Ty->isIntegerTy())
4143 return Error(ID.Loc, "integer constant must have integer type");
4144 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4145 V = ConstantInt::get(Context, ID.APSIntVal);
4147 case ValID::t_APFloat:
4148 if (!Ty->isFloatingPointTy() ||
4149 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4150 return Error(ID.Loc, "floating point constant invalid for type");
4152 // The lexer has no type info, so builds all half, float, and double FP
4153 // constants as double. Fix this here. Long double does not need this.
4154 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4157 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4159 else if (Ty->isFloatTy())
4160 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4163 V = ConstantFP::get(Context, ID.APFloatVal);
4165 if (V->getType() != Ty)
4166 return Error(ID.Loc, "floating point constant does not have type '" +
4167 getTypeString(Ty) + "'");
4171 if (!Ty->isPointerTy())
4172 return Error(ID.Loc, "null must be a pointer type");
4173 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4175 case ValID::t_Undef:
4176 // FIXME: LabelTy should not be a first-class type.
4177 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4178 return Error(ID.Loc, "invalid type for undef constant");
4179 V = UndefValue::get(Ty);
4181 case ValID::t_EmptyArray:
4182 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4183 return Error(ID.Loc, "invalid empty array initializer");
4184 V = UndefValue::get(Ty);
4187 // FIXME: LabelTy should not be a first-class type.
4188 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4189 return Error(ID.Loc, "invalid type for null constant");
4190 V = Constant::getNullValue(Ty);
4192 case ValID::t_Constant:
4193 if (ID.ConstantVal->getType() != Ty)
4194 return Error(ID.Loc, "constant expression type mismatch");
4198 case ValID::t_ConstantStruct:
4199 case ValID::t_PackedConstantStruct:
4200 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4201 if (ST->getNumElements() != ID.UIntVal)
4202 return Error(ID.Loc,
4203 "initializer with struct type has wrong # elements");
4204 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4205 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4207 // Verify that the elements are compatible with the structtype.
4208 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4209 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4210 return Error(ID.Loc, "element " + Twine(i) +
4211 " of struct initializer doesn't match struct element type");
4213 V = ConstantStruct::get(
4214 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4216 return Error(ID.Loc, "constant expression type mismatch");
4219 llvm_unreachable("Invalid ValID");
4222 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4225 auto Loc = Lex.getLoc();
4226 if (ParseValID(ID, /*PFS=*/nullptr))
4229 case ValID::t_APSInt:
4230 case ValID::t_APFloat:
4231 case ValID::t_Constant:
4232 case ValID::t_ConstantStruct:
4233 case ValID::t_PackedConstantStruct: {
4235 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4237 assert(isa<Constant>(V) && "Expected a constant value");
4238 C = cast<Constant>(V);
4242 return Error(Loc, "expected a constant value");
4246 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4247 OperatorConstraint OC) {
4250 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4253 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4255 return ParseType(Ty) ||
4256 ParseValue(Ty, V, PFS);
4259 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4260 PerFunctionState &PFS) {
4263 if (ParseTypeAndValue(V, PFS)) return true;
4264 if (!isa<BasicBlock>(V))
4265 return Error(Loc, "expected a basic block");
4266 BB = cast<BasicBlock>(V);
4272 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4273 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4274 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4275 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4276 // Parse the linkage.
4277 LocTy LinkageLoc = Lex.getLoc();
4280 unsigned Visibility;
4281 unsigned DLLStorageClass;
4282 AttrBuilder RetAttrs;
4284 Type *RetType = nullptr;
4285 LocTy RetTypeLoc = Lex.getLoc();
4286 if (ParseOptionalLinkage(Linkage) ||
4287 ParseOptionalVisibility(Visibility) ||
4288 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4289 ParseOptionalCallingConv(CC) ||
4290 ParseOptionalReturnAttrs(RetAttrs) ||
4291 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4294 // Verify that the linkage is ok.
4295 switch ((GlobalValue::LinkageTypes)Linkage) {
4296 case GlobalValue::ExternalLinkage:
4297 break; // always ok.
4298 case GlobalValue::ExternalWeakLinkage:
4300 return Error(LinkageLoc, "invalid linkage for function definition");
4302 case GlobalValue::PrivateLinkage:
4303 case GlobalValue::InternalLinkage:
4304 case GlobalValue::AvailableExternallyLinkage:
4305 case GlobalValue::LinkOnceAnyLinkage:
4306 case GlobalValue::LinkOnceODRLinkage:
4307 case GlobalValue::WeakAnyLinkage:
4308 case GlobalValue::WeakODRLinkage:
4310 return Error(LinkageLoc, "invalid linkage for function declaration");
4312 case GlobalValue::AppendingLinkage:
4313 case GlobalValue::CommonLinkage:
4314 return Error(LinkageLoc, "invalid function linkage type");
4317 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4318 return Error(LinkageLoc,
4319 "symbol with local linkage must have default visibility");
4321 if (!FunctionType::isValidReturnType(RetType))
4322 return Error(RetTypeLoc, "invalid function return type");
4324 LocTy NameLoc = Lex.getLoc();
4326 std::string FunctionName;
4327 if (Lex.getKind() == lltok::GlobalVar) {
4328 FunctionName = Lex.getStrVal();
4329 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4330 unsigned NameID = Lex.getUIntVal();
4332 if (NameID != NumberedVals.size())
4333 return TokError("function expected to be numbered '%" +
4334 Twine(NumberedVals.size()) + "'");
4336 return TokError("expected function name");
4341 if (Lex.getKind() != lltok::lparen)
4342 return TokError("expected '(' in function argument list");
4344 SmallVector<ArgInfo, 8> ArgList;
4346 AttrBuilder FuncAttrs;
4347 std::vector<unsigned> FwdRefAttrGrps;
4349 std::string Section;
4353 LocTy UnnamedAddrLoc;
4354 Constant *Prefix = nullptr;
4355 Constant *Prologue = nullptr;
4356 Constant *PersonalityFn = nullptr;
4359 if (ParseArgumentList(ArgList, isVarArg) ||
4360 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4362 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4364 (EatIfPresent(lltok::kw_section) &&
4365 ParseStringConstant(Section)) ||
4366 parseOptionalComdat(FunctionName, C) ||
4367 ParseOptionalAlignment(Alignment) ||
4368 (EatIfPresent(lltok::kw_gc) &&
4369 ParseStringConstant(GC)) ||
4370 (EatIfPresent(lltok::kw_prefix) &&
4371 ParseGlobalTypeAndValue(Prefix)) ||
4372 (EatIfPresent(lltok::kw_prologue) &&
4373 ParseGlobalTypeAndValue(Prologue)) ||
4374 (EatIfPresent(lltok::kw_personality) &&
4375 ParseGlobalTypeAndValue(PersonalityFn)))
4378 if (FuncAttrs.contains(Attribute::Builtin))
4379 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4381 // If the alignment was parsed as an attribute, move to the alignment field.
4382 if (FuncAttrs.hasAlignmentAttr()) {
4383 Alignment = FuncAttrs.getAlignment();
4384 FuncAttrs.removeAttribute(Attribute::Alignment);
4387 // Okay, if we got here, the function is syntactically valid. Convert types
4388 // and do semantic checks.
4389 std::vector<Type*> ParamTypeList;
4390 SmallVector<AttributeSet, 8> Attrs;
4392 if (RetAttrs.hasAttributes())
4393 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4394 AttributeSet::ReturnIndex,
4397 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4398 ParamTypeList.push_back(ArgList[i].Ty);
4399 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4400 AttrBuilder B(ArgList[i].Attrs, i + 1);
4401 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4405 if (FuncAttrs.hasAttributes())
4406 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4407 AttributeSet::FunctionIndex,
4410 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4412 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4413 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4416 FunctionType::get(RetType, ParamTypeList, isVarArg);
4417 PointerType *PFT = PointerType::getUnqual(FT);
4420 if (!FunctionName.empty()) {
4421 // If this was a definition of a forward reference, remove the definition
4422 // from the forward reference table and fill in the forward ref.
4423 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4424 ForwardRefVals.find(FunctionName);
4425 if (FRVI != ForwardRefVals.end()) {
4426 Fn = M->getFunction(FunctionName);
4428 return Error(FRVI->second.second, "invalid forward reference to "
4429 "function as global value!");
4430 if (Fn->getType() != PFT)
4431 return Error(FRVI->second.second, "invalid forward reference to "
4432 "function '" + FunctionName + "' with wrong type!");
4434 ForwardRefVals.erase(FRVI);
4435 } else if ((Fn = M->getFunction(FunctionName))) {
4436 // Reject redefinitions.
4437 return Error(NameLoc, "invalid redefinition of function '" +
4438 FunctionName + "'");
4439 } else if (M->getNamedValue(FunctionName)) {
4440 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4444 // If this is a definition of a forward referenced function, make sure the
4446 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4447 = ForwardRefValIDs.find(NumberedVals.size());
4448 if (I != ForwardRefValIDs.end()) {
4449 Fn = cast<Function>(I->second.first);
4450 if (Fn->getType() != PFT)
4451 return Error(NameLoc, "type of definition and forward reference of '@" +
4452 Twine(NumberedVals.size()) + "' disagree");
4453 ForwardRefValIDs.erase(I);
4458 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4459 else // Move the forward-reference to the correct spot in the module.
4460 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4462 if (FunctionName.empty())
4463 NumberedVals.push_back(Fn);
4465 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4466 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4467 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4468 Fn->setCallingConv(CC);
4469 Fn->setAttributes(PAL);
4470 Fn->setUnnamedAddr(UnnamedAddr);
4471 Fn->setAlignment(Alignment);
4472 Fn->setSection(Section);
4474 Fn->setPersonalityFn(PersonalityFn);
4475 if (!GC.empty()) Fn->setGC(GC.c_str());
4476 Fn->setPrefixData(Prefix);
4477 Fn->setPrologueData(Prologue);
4478 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4480 // Add all of the arguments we parsed to the function.
4481 Function::arg_iterator ArgIt = Fn->arg_begin();
4482 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4483 // If the argument has a name, insert it into the argument symbol table.
4484 if (ArgList[i].Name.empty()) continue;
4486 // Set the name, if it conflicted, it will be auto-renamed.
4487 ArgIt->setName(ArgList[i].Name);
4489 if (ArgIt->getName() != ArgList[i].Name)
4490 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4491 ArgList[i].Name + "'");
4497 // Check the declaration has no block address forward references.
4499 if (FunctionName.empty()) {
4500 ID.Kind = ValID::t_GlobalID;
4501 ID.UIntVal = NumberedVals.size() - 1;
4503 ID.Kind = ValID::t_GlobalName;
4504 ID.StrVal = FunctionName;
4506 auto Blocks = ForwardRefBlockAddresses.find(ID);
4507 if (Blocks != ForwardRefBlockAddresses.end())
4508 return Error(Blocks->first.Loc,
4509 "cannot take blockaddress inside a declaration");
4513 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4515 if (FunctionNumber == -1) {
4516 ID.Kind = ValID::t_GlobalName;
4517 ID.StrVal = F.getName();
4519 ID.Kind = ValID::t_GlobalID;
4520 ID.UIntVal = FunctionNumber;
4523 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4524 if (Blocks == P.ForwardRefBlockAddresses.end())
4527 for (const auto &I : Blocks->second) {
4528 const ValID &BBID = I.first;
4529 GlobalValue *GV = I.second;
4531 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4532 "Expected local id or name");
4534 if (BBID.Kind == ValID::t_LocalName)
4535 BB = GetBB(BBID.StrVal, BBID.Loc);
4537 BB = GetBB(BBID.UIntVal, BBID.Loc);
4539 return P.Error(BBID.Loc, "referenced value is not a basic block");
4541 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4542 GV->eraseFromParent();
4545 P.ForwardRefBlockAddresses.erase(Blocks);
4549 /// ParseFunctionBody
4550 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4551 bool LLParser::ParseFunctionBody(Function &Fn) {
4552 if (Lex.getKind() != lltok::lbrace)
4553 return TokError("expected '{' in function body");
4554 Lex.Lex(); // eat the {.
4556 int FunctionNumber = -1;
4557 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4559 PerFunctionState PFS(*this, Fn, FunctionNumber);
4561 // Resolve block addresses and allow basic blocks to be forward-declared
4562 // within this function.
4563 if (PFS.resolveForwardRefBlockAddresses())
4565 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4567 // We need at least one basic block.
4568 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4569 return TokError("function body requires at least one basic block");
4571 while (Lex.getKind() != lltok::rbrace &&
4572 Lex.getKind() != lltok::kw_uselistorder)
4573 if (ParseBasicBlock(PFS)) return true;
4575 while (Lex.getKind() != lltok::rbrace)
4576 if (ParseUseListOrder(&PFS))
4582 // Verify function is ok.
4583 return PFS.FinishFunction();
4587 /// ::= LabelStr? Instruction*
4588 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4589 // If this basic block starts out with a name, remember it.
4591 LocTy NameLoc = Lex.getLoc();
4592 if (Lex.getKind() == lltok::LabelStr) {
4593 Name = Lex.getStrVal();
4597 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4599 return Error(NameLoc,
4600 "unable to create block named '" + Name + "'");
4602 std::string NameStr;
4604 // Parse the instructions in this block until we get a terminator.
4607 // This instruction may have three possibilities for a name: a) none
4608 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4609 LocTy NameLoc = Lex.getLoc();
4613 if (Lex.getKind() == lltok::LocalVarID) {
4614 NameID = Lex.getUIntVal();
4616 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4618 } else if (Lex.getKind() == lltok::LocalVar) {
4619 NameStr = Lex.getStrVal();
4621 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4625 switch (ParseInstruction(Inst, BB, PFS)) {
4626 default: llvm_unreachable("Unknown ParseInstruction result!");
4627 case InstError: return true;
4629 BB->getInstList().push_back(Inst);
4631 // With a normal result, we check to see if the instruction is followed by
4632 // a comma and metadata.
4633 if (EatIfPresent(lltok::comma))
4634 if (ParseInstructionMetadata(*Inst))
4637 case InstExtraComma:
4638 BB->getInstList().push_back(Inst);
4640 // If the instruction parser ate an extra comma at the end of it, it
4641 // *must* be followed by metadata.
4642 if (ParseInstructionMetadata(*Inst))
4647 // Set the name on the instruction.
4648 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4649 } while (!isa<TerminatorInst>(Inst));
4654 //===----------------------------------------------------------------------===//
4655 // Instruction Parsing.
4656 //===----------------------------------------------------------------------===//
4658 /// ParseInstruction - Parse one of the many different instructions.
4660 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4661 PerFunctionState &PFS) {
4662 lltok::Kind Token = Lex.getKind();
4663 if (Token == lltok::Eof)
4664 return TokError("found end of file when expecting more instructions");
4665 LocTy Loc = Lex.getLoc();
4666 unsigned KeywordVal = Lex.getUIntVal();
4667 Lex.Lex(); // Eat the keyword.
4670 default: return Error(Loc, "expected instruction opcode");
4671 // Terminator Instructions.
4672 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4673 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4674 case lltok::kw_br: return ParseBr(Inst, PFS);
4675 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4676 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4677 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4678 case lltok::kw_resume: return ParseResume(Inst, PFS);
4679 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4680 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4681 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4682 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4683 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4684 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4685 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4686 // Binary Operators.
4690 case lltok::kw_shl: {
4691 bool NUW = EatIfPresent(lltok::kw_nuw);
4692 bool NSW = EatIfPresent(lltok::kw_nsw);
4693 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4695 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4697 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4698 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4701 case lltok::kw_fadd:
4702 case lltok::kw_fsub:
4703 case lltok::kw_fmul:
4704 case lltok::kw_fdiv:
4705 case lltok::kw_frem: {
4706 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4707 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4711 Inst->setFastMathFlags(FMF);
4715 case lltok::kw_sdiv:
4716 case lltok::kw_udiv:
4717 case lltok::kw_lshr:
4718 case lltok::kw_ashr: {
4719 bool Exact = EatIfPresent(lltok::kw_exact);
4721 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4722 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4726 case lltok::kw_urem:
4727 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4730 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4731 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4732 case lltok::kw_fcmp: {
4733 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4734 int Res = ParseCompare(Inst, PFS, KeywordVal);
4738 Inst->setFastMathFlags(FMF);
4743 case lltok::kw_trunc:
4744 case lltok::kw_zext:
4745 case lltok::kw_sext:
4746 case lltok::kw_fptrunc:
4747 case lltok::kw_fpext:
4748 case lltok::kw_bitcast:
4749 case lltok::kw_addrspacecast:
4750 case lltok::kw_uitofp:
4751 case lltok::kw_sitofp:
4752 case lltok::kw_fptoui:
4753 case lltok::kw_fptosi:
4754 case lltok::kw_inttoptr:
4755 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4757 case lltok::kw_select: return ParseSelect(Inst, PFS);
4758 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4759 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4760 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4761 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4762 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4763 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4765 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4766 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4767 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4769 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4770 case lltok::kw_load: return ParseLoad(Inst, PFS);
4771 case lltok::kw_store: return ParseStore(Inst, PFS);
4772 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4773 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4774 case lltok::kw_fence: return ParseFence(Inst, PFS);
4775 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4776 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4777 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4781 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4782 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4783 if (Opc == Instruction::FCmp) {
4784 switch (Lex.getKind()) {
4785 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4786 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4787 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4788 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4789 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4790 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4791 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4792 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4793 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4794 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4795 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4796 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4797 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4798 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4799 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4800 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4801 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4804 switch (Lex.getKind()) {
4805 default: return TokError("expected icmp predicate (e.g. 'eq')");
4806 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4807 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4808 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4809 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4810 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4811 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4812 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4813 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4814 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4815 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4822 //===----------------------------------------------------------------------===//
4823 // Terminator Instructions.
4824 //===----------------------------------------------------------------------===//
4826 /// ParseRet - Parse a return instruction.
4827 /// ::= 'ret' void (',' !dbg, !1)*
4828 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4829 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4830 PerFunctionState &PFS) {
4831 SMLoc TypeLoc = Lex.getLoc();
4833 if (ParseType(Ty, true /*void allowed*/)) return true;
4835 Type *ResType = PFS.getFunction().getReturnType();
4837 if (Ty->isVoidTy()) {
4838 if (!ResType->isVoidTy())
4839 return Error(TypeLoc, "value doesn't match function result type '" +
4840 getTypeString(ResType) + "'");
4842 Inst = ReturnInst::Create(Context);
4847 if (ParseValue(Ty, RV, PFS)) return true;
4849 if (ResType != RV->getType())
4850 return Error(TypeLoc, "value doesn't match function result type '" +
4851 getTypeString(ResType) + "'");
4853 Inst = ReturnInst::Create(Context, RV);
4859 /// ::= 'br' TypeAndValue
4860 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4861 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4864 BasicBlock *Op1, *Op2;
4865 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4867 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4868 Inst = BranchInst::Create(BB);
4872 if (Op0->getType() != Type::getInt1Ty(Context))
4873 return Error(Loc, "branch condition must have 'i1' type");
4875 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4876 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4877 ParseToken(lltok::comma, "expected ',' after true destination") ||
4878 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4881 Inst = BranchInst::Create(Op1, Op2, Op0);
4887 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4889 /// ::= (TypeAndValue ',' TypeAndValue)*
4890 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4891 LocTy CondLoc, BBLoc;
4893 BasicBlock *DefaultBB;
4894 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4895 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4896 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4897 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4900 if (!Cond->getType()->isIntegerTy())
4901 return Error(CondLoc, "switch condition must have integer type");
4903 // Parse the jump table pairs.
4904 SmallPtrSet<Value*, 32> SeenCases;
4905 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4906 while (Lex.getKind() != lltok::rsquare) {
4910 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4911 ParseToken(lltok::comma, "expected ',' after case value") ||
4912 ParseTypeAndBasicBlock(DestBB, PFS))
4915 if (!SeenCases.insert(Constant).second)
4916 return Error(CondLoc, "duplicate case value in switch");
4917 if (!isa<ConstantInt>(Constant))
4918 return Error(CondLoc, "case value is not a constant integer");
4920 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4923 Lex.Lex(); // Eat the ']'.
4925 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4926 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4927 SI->addCase(Table[i].first, Table[i].second);
4934 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4935 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4938 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4939 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4940 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4943 if (!Address->getType()->isPointerTy())
4944 return Error(AddrLoc, "indirectbr address must have pointer type");
4946 // Parse the destination list.
4947 SmallVector<BasicBlock*, 16> DestList;
4949 if (Lex.getKind() != lltok::rsquare) {
4951 if (ParseTypeAndBasicBlock(DestBB, PFS))
4953 DestList.push_back(DestBB);
4955 while (EatIfPresent(lltok::comma)) {
4956 if (ParseTypeAndBasicBlock(DestBB, PFS))
4958 DestList.push_back(DestBB);
4962 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4965 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4966 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4967 IBI->addDestination(DestList[i]);
4974 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4975 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4976 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4977 LocTy CallLoc = Lex.getLoc();
4978 AttrBuilder RetAttrs, FnAttrs;
4979 std::vector<unsigned> FwdRefAttrGrps;
4982 Type *RetType = nullptr;
4985 SmallVector<ParamInfo, 16> ArgList;
4987 BasicBlock *NormalBB, *UnwindBB;
4988 if (ParseOptionalCallingConv(CC) ||
4989 ParseOptionalReturnAttrs(RetAttrs) ||
4990 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4991 ParseValID(CalleeID) ||
4992 ParseParameterList(ArgList, PFS) ||
4993 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4995 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4996 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4997 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4998 ParseTypeAndBasicBlock(UnwindBB, PFS))
5001 // If RetType is a non-function pointer type, then this is the short syntax
5002 // for the call, which means that RetType is just the return type. Infer the
5003 // rest of the function argument types from the arguments that are present.
5004 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5006 // Pull out the types of all of the arguments...
5007 std::vector<Type*> ParamTypes;
5008 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5009 ParamTypes.push_back(ArgList[i].V->getType());
5011 if (!FunctionType::isValidReturnType(RetType))
5012 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5014 Ty = FunctionType::get(RetType, ParamTypes, false);
5019 // Look up the callee.
5021 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5024 // Set up the Attribute for the function.
5025 SmallVector<AttributeSet, 8> Attrs;
5026 if (RetAttrs.hasAttributes())
5027 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5028 AttributeSet::ReturnIndex,
5031 SmallVector<Value*, 8> Args;
5033 // Loop through FunctionType's arguments and ensure they are specified
5034 // correctly. Also, gather any parameter attributes.
5035 FunctionType::param_iterator I = Ty->param_begin();
5036 FunctionType::param_iterator E = Ty->param_end();
5037 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5038 Type *ExpectedTy = nullptr;
5041 } else if (!Ty->isVarArg()) {
5042 return Error(ArgList[i].Loc, "too many arguments specified");
5045 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5046 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5047 getTypeString(ExpectedTy) + "'");
5048 Args.push_back(ArgList[i].V);
5049 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5050 AttrBuilder B(ArgList[i].Attrs, i + 1);
5051 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5056 return Error(CallLoc, "not enough parameters specified for call");
5058 if (FnAttrs.hasAttributes()) {
5059 if (FnAttrs.hasAlignmentAttr())
5060 return Error(CallLoc, "invoke instructions may not have an alignment");
5062 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5063 AttributeSet::FunctionIndex,
5067 // Finish off the Attribute and check them
5068 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5070 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
5071 II->setCallingConv(CC);
5072 II->setAttributes(PAL);
5073 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5079 /// ::= 'resume' TypeAndValue
5080 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5081 Value *Exn; LocTy ExnLoc;
5082 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5085 ResumeInst *RI = ResumeInst::Create(Exn);
5090 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5091 PerFunctionState &PFS) {
5092 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5095 while (Lex.getKind() != lltok::rsquare) {
5096 // If this isn't the first argument, we need a comma.
5097 if (!Args.empty() &&
5098 ParseToken(lltok::comma, "expected ',' in argument list"))
5101 // Parse the argument.
5103 Type *ArgTy = nullptr;
5104 if (ParseType(ArgTy, ArgLoc))
5108 if (ArgTy->isMetadataTy()) {
5109 if (ParseMetadataAsValue(V, PFS))
5112 if (ParseValue(ArgTy, V, PFS))
5118 Lex.Lex(); // Lex the ']'.
5123 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5124 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5125 Value *CleanupPad = nullptr;
5127 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5130 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5133 BasicBlock *UnwindBB = nullptr;
5134 if (Lex.getKind() == lltok::kw_to) {
5136 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5139 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5144 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5149 /// ::= 'catchret' Value 'to' TypeAndValue
5150 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5151 Value *CatchPad = nullptr;
5153 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5157 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5158 ParseTypeAndBasicBlock(BB, PFS))
5161 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5166 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5167 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5168 SmallVector<Value *, 8> Args;
5169 if (ParseExceptionArgs(Args, PFS))
5172 BasicBlock *NormalBB, *UnwindBB;
5173 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5174 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5175 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5176 ParseTypeAndBasicBlock(UnwindBB, PFS))
5179 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5183 /// ParseTerminatePad
5184 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5185 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5186 SmallVector<Value *, 8> Args;
5187 if (ParseExceptionArgs(Args, PFS))
5190 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5193 BasicBlock *UnwindBB = nullptr;
5194 if (Lex.getKind() == lltok::kw_to) {
5196 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5199 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5204 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5209 /// ::= 'cleanuppad' ParamList
5210 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5211 SmallVector<Value *, 8> Args;
5212 if (ParseExceptionArgs(Args, PFS))
5215 Inst = CleanupPadInst::Create(Context, Args);
5219 /// ParseCatchEndPad
5220 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5221 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5222 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5225 BasicBlock *UnwindBB = nullptr;
5226 if (Lex.getKind() == lltok::kw_to) {
5228 if (Lex.getKind() == lltok::kw_caller) {
5234 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5239 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5243 /// ParseCatchEndPad
5244 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5245 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5246 Value *CleanupPad = nullptr;
5248 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5251 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5254 BasicBlock *UnwindBB = nullptr;
5255 if (Lex.getKind() == lltok::kw_to) {
5257 if (Lex.getKind() == lltok::kw_caller) {
5263 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5268 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5272 //===----------------------------------------------------------------------===//
5273 // Binary Operators.
5274 //===----------------------------------------------------------------------===//
5277 /// ::= ArithmeticOps TypeAndValue ',' Value
5279 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5280 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5281 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5282 unsigned Opc, unsigned OperandType) {
5283 LocTy Loc; Value *LHS, *RHS;
5284 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5285 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5286 ParseValue(LHS->getType(), RHS, PFS))
5290 switch (OperandType) {
5291 default: llvm_unreachable("Unknown operand type!");
5292 case 0: // int or FP.
5293 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5294 LHS->getType()->isFPOrFPVectorTy();
5296 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5297 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5301 return Error(Loc, "invalid operand type for instruction");
5303 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5308 /// ::= ArithmeticOps TypeAndValue ',' Value {
5309 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5311 LocTy Loc; Value *LHS, *RHS;
5312 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5313 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5314 ParseValue(LHS->getType(), RHS, PFS))
5317 if (!LHS->getType()->isIntOrIntVectorTy())
5318 return Error(Loc,"instruction requires integer or integer vector operands");
5320 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5326 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5327 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5328 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5330 // Parse the integer/fp comparison predicate.
5334 if (ParseCmpPredicate(Pred, Opc) ||
5335 ParseTypeAndValue(LHS, Loc, PFS) ||
5336 ParseToken(lltok::comma, "expected ',' after compare value") ||
5337 ParseValue(LHS->getType(), RHS, PFS))
5340 if (Opc == Instruction::FCmp) {
5341 if (!LHS->getType()->isFPOrFPVectorTy())
5342 return Error(Loc, "fcmp requires floating point operands");
5343 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5345 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5346 if (!LHS->getType()->isIntOrIntVectorTy() &&
5347 !LHS->getType()->getScalarType()->isPointerTy())
5348 return Error(Loc, "icmp requires integer operands");
5349 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5354 //===----------------------------------------------------------------------===//
5355 // Other Instructions.
5356 //===----------------------------------------------------------------------===//
5360 /// ::= CastOpc TypeAndValue 'to' Type
5361 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5365 Type *DestTy = nullptr;
5366 if (ParseTypeAndValue(Op, Loc, PFS) ||
5367 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5371 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5372 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5373 return Error(Loc, "invalid cast opcode for cast from '" +
5374 getTypeString(Op->getType()) + "' to '" +
5375 getTypeString(DestTy) + "'");
5377 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5382 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5383 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5385 Value *Op0, *Op1, *Op2;
5386 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5387 ParseToken(lltok::comma, "expected ',' after select condition") ||
5388 ParseTypeAndValue(Op1, PFS) ||
5389 ParseToken(lltok::comma, "expected ',' after select value") ||
5390 ParseTypeAndValue(Op2, PFS))
5393 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5394 return Error(Loc, Reason);
5396 Inst = SelectInst::Create(Op0, Op1, Op2);
5401 /// ::= 'va_arg' TypeAndValue ',' Type
5402 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5404 Type *EltTy = nullptr;
5406 if (ParseTypeAndValue(Op, PFS) ||
5407 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5408 ParseType(EltTy, TypeLoc))
5411 if (!EltTy->isFirstClassType())
5412 return Error(TypeLoc, "va_arg requires operand with first class type");
5414 Inst = new VAArgInst(Op, EltTy);
5418 /// ParseExtractElement
5419 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5420 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5423 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5424 ParseToken(lltok::comma, "expected ',' after extract value") ||
5425 ParseTypeAndValue(Op1, PFS))
5428 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5429 return Error(Loc, "invalid extractelement operands");
5431 Inst = ExtractElementInst::Create(Op0, Op1);
5435 /// ParseInsertElement
5436 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5437 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5439 Value *Op0, *Op1, *Op2;
5440 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5441 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5442 ParseTypeAndValue(Op1, PFS) ||
5443 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5444 ParseTypeAndValue(Op2, PFS))
5447 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5448 return Error(Loc, "invalid insertelement operands");
5450 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5454 /// ParseShuffleVector
5455 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5456 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5458 Value *Op0, *Op1, *Op2;
5459 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5460 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5461 ParseTypeAndValue(Op1, PFS) ||
5462 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5463 ParseTypeAndValue(Op2, PFS))
5466 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5467 return Error(Loc, "invalid shufflevector operands");
5469 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5474 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5475 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5476 Type *Ty = nullptr; LocTy TypeLoc;
5479 if (ParseType(Ty, TypeLoc) ||
5480 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5481 ParseValue(Ty, Op0, PFS) ||
5482 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5483 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5484 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5487 bool AteExtraComma = false;
5488 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5490 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5492 if (!EatIfPresent(lltok::comma))
5495 if (Lex.getKind() == lltok::MetadataVar) {
5496 AteExtraComma = true;
5500 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5501 ParseValue(Ty, Op0, PFS) ||
5502 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5503 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5504 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5508 if (!Ty->isFirstClassType())
5509 return Error(TypeLoc, "phi node must have first class type");
5511 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5512 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5513 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5515 return AteExtraComma ? InstExtraComma : InstNormal;
5519 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5521 /// ::= 'catch' TypeAndValue
5523 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5524 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5525 Type *Ty = nullptr; LocTy TyLoc;
5527 if (ParseType(Ty, TyLoc))
5530 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5531 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5533 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5534 LandingPadInst::ClauseType CT;
5535 if (EatIfPresent(lltok::kw_catch))
5536 CT = LandingPadInst::Catch;
5537 else if (EatIfPresent(lltok::kw_filter))
5538 CT = LandingPadInst::Filter;
5540 return TokError("expected 'catch' or 'filter' clause type");
5544 if (ParseTypeAndValue(V, VLoc, PFS))
5547 // A 'catch' type expects a non-array constant. A filter clause expects an
5549 if (CT == LandingPadInst::Catch) {
5550 if (isa<ArrayType>(V->getType()))
5551 Error(VLoc, "'catch' clause has an invalid type");
5553 if (!isa<ArrayType>(V->getType()))
5554 Error(VLoc, "'filter' clause has an invalid type");
5557 Constant *CV = dyn_cast<Constant>(V);
5559 return Error(VLoc, "clause argument must be a constant");
5563 Inst = LP.release();
5568 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5569 /// ParameterList OptionalAttrs
5570 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5571 /// ParameterList OptionalAttrs
5572 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5573 /// ParameterList OptionalAttrs
5574 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5575 CallInst::TailCallKind TCK) {
5576 AttrBuilder RetAttrs, FnAttrs;
5577 std::vector<unsigned> FwdRefAttrGrps;
5580 Type *RetType = nullptr;
5583 SmallVector<ParamInfo, 16> ArgList;
5584 LocTy CallLoc = Lex.getLoc();
5586 if ((TCK != CallInst::TCK_None &&
5587 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5588 ParseOptionalCallingConv(CC) ||
5589 ParseOptionalReturnAttrs(RetAttrs) ||
5590 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5591 ParseValID(CalleeID) ||
5592 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5593 PFS.getFunction().isVarArg()) ||
5594 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5598 // If RetType is a non-function pointer type, then this is the short syntax
5599 // for the call, which means that RetType is just the return type. Infer the
5600 // rest of the function argument types from the arguments that are present.
5601 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5603 // Pull out the types of all of the arguments...
5604 std::vector<Type*> ParamTypes;
5605 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5606 ParamTypes.push_back(ArgList[i].V->getType());
5608 if (!FunctionType::isValidReturnType(RetType))
5609 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5611 Ty = FunctionType::get(RetType, ParamTypes, false);
5616 // Look up the callee.
5618 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5621 // Set up the Attribute for the function.
5622 SmallVector<AttributeSet, 8> Attrs;
5623 if (RetAttrs.hasAttributes())
5624 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5625 AttributeSet::ReturnIndex,
5628 SmallVector<Value*, 8> Args;
5630 // Loop through FunctionType's arguments and ensure they are specified
5631 // correctly. Also, gather any parameter attributes.
5632 FunctionType::param_iterator I = Ty->param_begin();
5633 FunctionType::param_iterator E = Ty->param_end();
5634 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5635 Type *ExpectedTy = nullptr;
5638 } else if (!Ty->isVarArg()) {
5639 return Error(ArgList[i].Loc, "too many arguments specified");
5642 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5643 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5644 getTypeString(ExpectedTy) + "'");
5645 Args.push_back(ArgList[i].V);
5646 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5647 AttrBuilder B(ArgList[i].Attrs, i + 1);
5648 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5653 return Error(CallLoc, "not enough parameters specified for call");
5655 if (FnAttrs.hasAttributes()) {
5656 if (FnAttrs.hasAlignmentAttr())
5657 return Error(CallLoc, "call instructions may not have an alignment");
5659 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5660 AttributeSet::FunctionIndex,
5664 // Finish off the Attribute and check them
5665 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5667 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5668 CI->setTailCallKind(TCK);
5669 CI->setCallingConv(CC);
5670 CI->setAttributes(PAL);
5671 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5676 //===----------------------------------------------------------------------===//
5677 // Memory Instructions.
5678 //===----------------------------------------------------------------------===//
5681 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5682 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5683 Value *Size = nullptr;
5684 LocTy SizeLoc, TyLoc;
5685 unsigned Alignment = 0;
5688 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5690 if (ParseType(Ty, TyLoc)) return true;
5692 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5693 return Error(TyLoc, "invalid type for alloca");
5695 bool AteExtraComma = false;
5696 if (EatIfPresent(lltok::comma)) {
5697 if (Lex.getKind() == lltok::kw_align) {
5698 if (ParseOptionalAlignment(Alignment)) return true;
5699 } else if (Lex.getKind() == lltok::MetadataVar) {
5700 AteExtraComma = true;
5702 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5703 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5708 if (Size && !Size->getType()->isIntegerTy())
5709 return Error(SizeLoc, "element count must have integer type");
5711 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5712 AI->setUsedWithInAlloca(IsInAlloca);
5714 return AteExtraComma ? InstExtraComma : InstNormal;
5718 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5719 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5720 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5721 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5722 Value *Val; LocTy Loc;
5723 unsigned Alignment = 0;
5724 bool AteExtraComma = false;
5725 bool isAtomic = false;
5726 AtomicOrdering Ordering = NotAtomic;
5727 SynchronizationScope Scope = CrossThread;
5729 if (Lex.getKind() == lltok::kw_atomic) {
5734 bool isVolatile = false;
5735 if (Lex.getKind() == lltok::kw_volatile) {
5741 LocTy ExplicitTypeLoc = Lex.getLoc();
5742 if (ParseType(Ty) ||
5743 ParseToken(lltok::comma, "expected comma after load's type") ||
5744 ParseTypeAndValue(Val, Loc, PFS) ||
5745 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5746 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5749 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5750 return Error(Loc, "load operand must be a pointer to a first class type");
5751 if (isAtomic && !Alignment)
5752 return Error(Loc, "atomic load must have explicit non-zero alignment");
5753 if (Ordering == Release || Ordering == AcquireRelease)
5754 return Error(Loc, "atomic load cannot use Release ordering");
5756 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5757 return Error(ExplicitTypeLoc,
5758 "explicit pointee type doesn't match operand's pointee type");
5760 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5761 return AteExtraComma ? InstExtraComma : InstNormal;
5766 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5767 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5768 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5769 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5770 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5771 unsigned Alignment = 0;
5772 bool AteExtraComma = false;
5773 bool isAtomic = false;
5774 AtomicOrdering Ordering = NotAtomic;
5775 SynchronizationScope Scope = CrossThread;
5777 if (Lex.getKind() == lltok::kw_atomic) {
5782 bool isVolatile = false;
5783 if (Lex.getKind() == lltok::kw_volatile) {
5788 if (ParseTypeAndValue(Val, Loc, PFS) ||
5789 ParseToken(lltok::comma, "expected ',' after store operand") ||
5790 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5791 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5792 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5795 if (!Ptr->getType()->isPointerTy())
5796 return Error(PtrLoc, "store operand must be a pointer");
5797 if (!Val->getType()->isFirstClassType())
5798 return Error(Loc, "store operand must be a first class value");
5799 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5800 return Error(Loc, "stored value and pointer type do not match");
5801 if (isAtomic && !Alignment)
5802 return Error(Loc, "atomic store must have explicit non-zero alignment");
5803 if (Ordering == Acquire || Ordering == AcquireRelease)
5804 return Error(Loc, "atomic store cannot use Acquire ordering");
5806 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5807 return AteExtraComma ? InstExtraComma : InstNormal;
5811 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5812 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5813 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5814 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5815 bool AteExtraComma = false;
5816 AtomicOrdering SuccessOrdering = NotAtomic;
5817 AtomicOrdering FailureOrdering = NotAtomic;
5818 SynchronizationScope Scope = CrossThread;
5819 bool isVolatile = false;
5820 bool isWeak = false;
5822 if (EatIfPresent(lltok::kw_weak))
5825 if (EatIfPresent(lltok::kw_volatile))
5828 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5829 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5830 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5831 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5832 ParseTypeAndValue(New, NewLoc, PFS) ||
5833 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5834 ParseOrdering(FailureOrdering))
5837 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5838 return TokError("cmpxchg cannot be unordered");
5839 if (SuccessOrdering < FailureOrdering)
5840 return TokError("cmpxchg must be at least as ordered on success as failure");
5841 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5842 return TokError("cmpxchg failure ordering cannot include release semantics");
5843 if (!Ptr->getType()->isPointerTy())
5844 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5845 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5846 return Error(CmpLoc, "compare value and pointer type do not match");
5847 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5848 return Error(NewLoc, "new value and pointer type do not match");
5849 if (!New->getType()->isIntegerTy())
5850 return Error(NewLoc, "cmpxchg operand must be an integer");
5851 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5852 if (Size < 8 || (Size & (Size - 1)))
5853 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5856 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5857 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5858 CXI->setVolatile(isVolatile);
5859 CXI->setWeak(isWeak);
5861 return AteExtraComma ? InstExtraComma : InstNormal;
5865 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5866 /// 'singlethread'? AtomicOrdering
5867 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5868 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5869 bool AteExtraComma = false;
5870 AtomicOrdering Ordering = NotAtomic;
5871 SynchronizationScope Scope = CrossThread;
5872 bool isVolatile = false;
5873 AtomicRMWInst::BinOp Operation;
5875 if (EatIfPresent(lltok::kw_volatile))
5878 switch (Lex.getKind()) {
5879 default: return TokError("expected binary operation in atomicrmw");
5880 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5881 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5882 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5883 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5884 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5885 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5886 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5887 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5888 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5889 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5890 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5892 Lex.Lex(); // Eat the operation.
5894 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5895 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5896 ParseTypeAndValue(Val, ValLoc, PFS) ||
5897 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5900 if (Ordering == Unordered)
5901 return TokError("atomicrmw cannot be unordered");
5902 if (!Ptr->getType()->isPointerTy())
5903 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5904 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5905 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5906 if (!Val->getType()->isIntegerTy())
5907 return Error(ValLoc, "atomicrmw operand must be an integer");
5908 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5909 if (Size < 8 || (Size & (Size - 1)))
5910 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5913 AtomicRMWInst *RMWI =
5914 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5915 RMWI->setVolatile(isVolatile);
5917 return AteExtraComma ? InstExtraComma : InstNormal;
5921 /// ::= 'fence' 'singlethread'? AtomicOrdering
5922 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5923 AtomicOrdering Ordering = NotAtomic;
5924 SynchronizationScope Scope = CrossThread;
5925 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5928 if (Ordering == Unordered)
5929 return TokError("fence cannot be unordered");
5930 if (Ordering == Monotonic)
5931 return TokError("fence cannot be monotonic");
5933 Inst = new FenceInst(Context, Ordering, Scope);
5937 /// ParseGetElementPtr
5938 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5939 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5940 Value *Ptr = nullptr;
5941 Value *Val = nullptr;
5944 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5947 LocTy ExplicitTypeLoc = Lex.getLoc();
5948 if (ParseType(Ty) ||
5949 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5950 ParseTypeAndValue(Ptr, Loc, PFS))
5953 Type *BaseType = Ptr->getType();
5954 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5955 if (!BasePointerType)
5956 return Error(Loc, "base of getelementptr must be a pointer");
5958 if (Ty != BasePointerType->getElementType())
5959 return Error(ExplicitTypeLoc,
5960 "explicit pointee type doesn't match operand's pointee type");
5962 SmallVector<Value*, 16> Indices;
5963 bool AteExtraComma = false;
5964 // GEP returns a vector of pointers if at least one of parameters is a vector.
5965 // All vector parameters should have the same vector width.
5966 unsigned GEPWidth = BaseType->isVectorTy() ?
5967 BaseType->getVectorNumElements() : 0;
5969 while (EatIfPresent(lltok::comma)) {
5970 if (Lex.getKind() == lltok::MetadataVar) {
5971 AteExtraComma = true;
5974 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5975 if (!Val->getType()->getScalarType()->isIntegerTy())
5976 return Error(EltLoc, "getelementptr index must be an integer");
5978 if (Val->getType()->isVectorTy()) {
5979 unsigned ValNumEl = Val->getType()->getVectorNumElements();
5980 if (GEPWidth && GEPWidth != ValNumEl)
5981 return Error(EltLoc,
5982 "getelementptr vector index has a wrong number of elements");
5983 GEPWidth = ValNumEl;
5985 Indices.push_back(Val);
5988 SmallPtrSet<Type*, 4> Visited;
5989 if (!Indices.empty() && !Ty->isSized(&Visited))
5990 return Error(Loc, "base element of getelementptr must be sized");
5992 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5993 return Error(Loc, "invalid getelementptr indices");
5994 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5996 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5997 return AteExtraComma ? InstExtraComma : InstNormal;
6000 /// ParseExtractValue
6001 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6002 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6003 Value *Val; LocTy Loc;
6004 SmallVector<unsigned, 4> Indices;
6006 if (ParseTypeAndValue(Val, Loc, PFS) ||
6007 ParseIndexList(Indices, AteExtraComma))
6010 if (!Val->getType()->isAggregateType())
6011 return Error(Loc, "extractvalue operand must be aggregate type");
6013 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6014 return Error(Loc, "invalid indices for extractvalue");
6015 Inst = ExtractValueInst::Create(Val, Indices);
6016 return AteExtraComma ? InstExtraComma : InstNormal;
6019 /// ParseInsertValue
6020 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6021 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6022 Value *Val0, *Val1; LocTy Loc0, Loc1;
6023 SmallVector<unsigned, 4> Indices;
6025 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6026 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6027 ParseTypeAndValue(Val1, Loc1, PFS) ||
6028 ParseIndexList(Indices, AteExtraComma))
6031 if (!Val0->getType()->isAggregateType())
6032 return Error(Loc0, "insertvalue operand must be aggregate type");
6034 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6036 return Error(Loc0, "invalid indices for insertvalue");
6037 if (IndexedType != Val1->getType())
6038 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6039 getTypeString(Val1->getType()) + "' instead of '" +
6040 getTypeString(IndexedType) + "'");
6041 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6042 return AteExtraComma ? InstExtraComma : InstNormal;
6045 //===----------------------------------------------------------------------===//
6046 // Embedded metadata.
6047 //===----------------------------------------------------------------------===//
6049 /// ParseMDNodeVector
6050 /// ::= { Element (',' Element)* }
6052 /// ::= 'null' | TypeAndValue
6053 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6054 if (ParseToken(lltok::lbrace, "expected '{' here"))
6057 // Check for an empty list.
6058 if (EatIfPresent(lltok::rbrace))
6062 // Null is a special case since it is typeless.
6063 if (EatIfPresent(lltok::kw_null)) {
6064 Elts.push_back(nullptr);
6069 if (ParseMetadata(MD, nullptr))
6072 } while (EatIfPresent(lltok::comma));
6074 return ParseToken(lltok::rbrace, "expected end of metadata node");
6077 //===----------------------------------------------------------------------===//
6078 // Use-list order directives.
6079 //===----------------------------------------------------------------------===//
6080 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6083 return Error(Loc, "value has no uses");
6085 unsigned NumUses = 0;
6086 SmallDenseMap<const Use *, unsigned, 16> Order;
6087 for (const Use &U : V->uses()) {
6088 if (++NumUses > Indexes.size())
6090 Order[&U] = Indexes[NumUses - 1];
6093 return Error(Loc, "value only has one use");
6094 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6095 return Error(Loc, "wrong number of indexes, expected " +
6096 Twine(std::distance(V->use_begin(), V->use_end())));
6098 V->sortUseList([&](const Use &L, const Use &R) {
6099 return Order.lookup(&L) < Order.lookup(&R);
6104 /// ParseUseListOrderIndexes
6105 /// ::= '{' uint32 (',' uint32)+ '}'
6106 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6107 SMLoc Loc = Lex.getLoc();
6108 if (ParseToken(lltok::lbrace, "expected '{' here"))
6110 if (Lex.getKind() == lltok::rbrace)
6111 return Lex.Error("expected non-empty list of uselistorder indexes");
6113 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6114 // indexes should be distinct numbers in the range [0, size-1], and should
6116 unsigned Offset = 0;
6118 bool IsOrdered = true;
6119 assert(Indexes.empty() && "Expected empty order vector");
6122 if (ParseUInt32(Index))
6125 // Update consistency checks.
6126 Offset += Index - Indexes.size();
6127 Max = std::max(Max, Index);
6128 IsOrdered &= Index == Indexes.size();
6130 Indexes.push_back(Index);
6131 } while (EatIfPresent(lltok::comma));
6133 if (ParseToken(lltok::rbrace, "expected '}' here"))
6136 if (Indexes.size() < 2)
6137 return Error(Loc, "expected >= 2 uselistorder indexes");
6138 if (Offset != 0 || Max >= Indexes.size())
6139 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6141 return Error(Loc, "expected uselistorder indexes to change the order");
6146 /// ParseUseListOrder
6147 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6148 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6149 SMLoc Loc = Lex.getLoc();
6150 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6154 SmallVector<unsigned, 16> Indexes;
6155 if (ParseTypeAndValue(V, PFS) ||
6156 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6157 ParseUseListOrderIndexes(Indexes))
6160 return sortUseListOrder(V, Indexes, Loc);
6163 /// ParseUseListOrderBB
6164 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6165 bool LLParser::ParseUseListOrderBB() {
6166 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6167 SMLoc Loc = Lex.getLoc();
6171 SmallVector<unsigned, 16> Indexes;
6172 if (ParseValID(Fn) ||
6173 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6174 ParseValID(Label) ||
6175 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6176 ParseUseListOrderIndexes(Indexes))
6179 // Check the function.
6181 if (Fn.Kind == ValID::t_GlobalName)
6182 GV = M->getNamedValue(Fn.StrVal);
6183 else if (Fn.Kind == ValID::t_GlobalID)
6184 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6186 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6188 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6189 auto *F = dyn_cast<Function>(GV);
6191 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6192 if (F->isDeclaration())
6193 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6195 // Check the basic block.
6196 if (Label.Kind == ValID::t_LocalID)
6197 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6198 if (Label.Kind != ValID::t_LocalName)
6199 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6200 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6202 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6203 if (!isa<BasicBlock>(V))
6204 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6206 return sortUseListOrder(V, Indexes, Loc);