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 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1044 /// forward reference record if needed. This can return null if the value
1045 /// exists but does not have the right type.
1046 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1048 PointerType *PTy = dyn_cast<PointerType>(Ty);
1050 Error(Loc, "global variable reference must have pointer type");
1054 // Look this name up in the normal function symbol table.
1056 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1058 // If this is a forward reference for the value, see if we already created a
1059 // forward ref record.
1061 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1062 I = ForwardRefVals.find(Name);
1063 if (I != ForwardRefVals.end())
1064 Val = I->second.first;
1067 // If we have the value in the symbol table or fwd-ref table, return it.
1069 if (Val->getType() == Ty) return Val;
1070 Error(Loc, "'@" + Name + "' defined with type '" +
1071 getTypeString(Val->getType()) + "'");
1075 // Otherwise, create a new forward reference for this value and remember it.
1076 GlobalValue *FwdVal;
1077 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1078 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1080 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1081 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1082 nullptr, GlobalVariable::NotThreadLocal,
1083 PTy->getAddressSpace());
1085 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1089 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1090 PointerType *PTy = dyn_cast<PointerType>(Ty);
1092 Error(Loc, "global variable reference must have pointer type");
1096 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1098 // If this is a forward reference for the value, see if we already created a
1099 // forward ref record.
1101 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1102 I = ForwardRefValIDs.find(ID);
1103 if (I != ForwardRefValIDs.end())
1104 Val = I->second.first;
1107 // If we have the value in the symbol table or fwd-ref table, return it.
1109 if (Val->getType() == Ty) return Val;
1110 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1111 getTypeString(Val->getType()) + "'");
1115 // Otherwise, create a new forward reference for this value and remember it.
1116 GlobalValue *FwdVal;
1117 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1118 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1120 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1121 GlobalValue::ExternalWeakLinkage, nullptr, "");
1123 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1128 //===----------------------------------------------------------------------===//
1129 // Comdat Reference/Resolution Routines.
1130 //===----------------------------------------------------------------------===//
1132 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1133 // Look this name up in the comdat symbol table.
1134 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1135 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1136 if (I != ComdatSymTab.end())
1139 // Otherwise, create a new forward reference for this value and remember it.
1140 Comdat *C = M->getOrInsertComdat(Name);
1141 ForwardRefComdats[Name] = Loc;
1146 //===----------------------------------------------------------------------===//
1148 //===----------------------------------------------------------------------===//
1150 /// ParseToken - If the current token has the specified kind, eat it and return
1151 /// success. Otherwise, emit the specified error and return failure.
1152 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1153 if (Lex.getKind() != T)
1154 return TokError(ErrMsg);
1159 /// ParseStringConstant
1160 /// ::= StringConstant
1161 bool LLParser::ParseStringConstant(std::string &Result) {
1162 if (Lex.getKind() != lltok::StringConstant)
1163 return TokError("expected string constant");
1164 Result = Lex.getStrVal();
1171 bool LLParser::ParseUInt32(unsigned &Val) {
1172 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1173 return TokError("expected integer");
1174 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1175 if (Val64 != unsigned(Val64))
1176 return TokError("expected 32-bit integer (too large)");
1184 bool LLParser::ParseUInt64(uint64_t &Val) {
1185 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1186 return TokError("expected integer");
1187 Val = Lex.getAPSIntVal().getLimitedValue();
1193 /// := 'localdynamic'
1194 /// := 'initialexec'
1196 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1197 switch (Lex.getKind()) {
1199 return TokError("expected localdynamic, initialexec or localexec");
1200 case lltok::kw_localdynamic:
1201 TLM = GlobalVariable::LocalDynamicTLSModel;
1203 case lltok::kw_initialexec:
1204 TLM = GlobalVariable::InitialExecTLSModel;
1206 case lltok::kw_localexec:
1207 TLM = GlobalVariable::LocalExecTLSModel;
1215 /// ParseOptionalThreadLocal
1217 /// := 'thread_local'
1218 /// := 'thread_local' '(' tlsmodel ')'
1219 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1220 TLM = GlobalVariable::NotThreadLocal;
1221 if (!EatIfPresent(lltok::kw_thread_local))
1224 TLM = GlobalVariable::GeneralDynamicTLSModel;
1225 if (Lex.getKind() == lltok::lparen) {
1227 return ParseTLSModel(TLM) ||
1228 ParseToken(lltok::rparen, "expected ')' after thread local model");
1233 /// ParseOptionalAddrSpace
1235 /// := 'addrspace' '(' uint32 ')'
1236 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1238 if (!EatIfPresent(lltok::kw_addrspace))
1240 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1241 ParseUInt32(AddrSpace) ||
1242 ParseToken(lltok::rparen, "expected ')' in address space");
1245 /// ParseStringAttribute
1246 /// := StringConstant
1247 /// := StringConstant '=' StringConstant
1248 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1249 std::string Attr = Lex.getStrVal();
1252 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1254 B.addAttribute(Attr, Val);
1258 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1259 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1260 bool HaveError = false;
1265 lltok::Kind Token = Lex.getKind();
1267 default: // End of attributes.
1269 case lltok::StringConstant: {
1270 if (ParseStringAttribute(B))
1274 case lltok::kw_align: {
1276 if (ParseOptionalAlignment(Alignment))
1278 B.addAlignmentAttr(Alignment);
1281 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1282 case lltok::kw_dereferenceable: {
1284 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1286 B.addDereferenceableAttr(Bytes);
1289 case lltok::kw_dereferenceable_or_null: {
1291 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1293 B.addDereferenceableOrNullAttr(Bytes);
1296 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1297 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1298 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1299 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1300 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1301 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1302 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1303 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1304 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1305 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1306 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1307 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1309 case lltok::kw_alignstack:
1310 case lltok::kw_alwaysinline:
1311 case lltok::kw_argmemonly:
1312 case lltok::kw_builtin:
1313 case lltok::kw_inlinehint:
1314 case lltok::kw_jumptable:
1315 case lltok::kw_minsize:
1316 case lltok::kw_naked:
1317 case lltok::kw_nobuiltin:
1318 case lltok::kw_noduplicate:
1319 case lltok::kw_noimplicitfloat:
1320 case lltok::kw_noinline:
1321 case lltok::kw_nonlazybind:
1322 case lltok::kw_noredzone:
1323 case lltok::kw_noreturn:
1324 case lltok::kw_nounwind:
1325 case lltok::kw_optnone:
1326 case lltok::kw_optsize:
1327 case lltok::kw_returns_twice:
1328 case lltok::kw_sanitize_address:
1329 case lltok::kw_sanitize_memory:
1330 case lltok::kw_sanitize_thread:
1332 case lltok::kw_sspreq:
1333 case lltok::kw_sspstrong:
1334 case lltok::kw_safestack:
1335 case lltok::kw_uwtable:
1336 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1344 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1345 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1346 bool HaveError = false;
1351 lltok::Kind Token = Lex.getKind();
1353 default: // End of attributes.
1355 case lltok::StringConstant: {
1356 if (ParseStringAttribute(B))
1360 case lltok::kw_dereferenceable: {
1362 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1364 B.addDereferenceableAttr(Bytes);
1367 case lltok::kw_dereferenceable_or_null: {
1369 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1371 B.addDereferenceableOrNullAttr(Bytes);
1374 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1375 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1376 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1377 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1378 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1381 case lltok::kw_align:
1382 case lltok::kw_byval:
1383 case lltok::kw_inalloca:
1384 case lltok::kw_nest:
1385 case lltok::kw_nocapture:
1386 case lltok::kw_returned:
1387 case lltok::kw_sret:
1388 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1391 case lltok::kw_alignstack:
1392 case lltok::kw_alwaysinline:
1393 case lltok::kw_argmemonly:
1394 case lltok::kw_builtin:
1395 case lltok::kw_cold:
1396 case lltok::kw_inlinehint:
1397 case lltok::kw_jumptable:
1398 case lltok::kw_minsize:
1399 case lltok::kw_naked:
1400 case lltok::kw_nobuiltin:
1401 case lltok::kw_noduplicate:
1402 case lltok::kw_noimplicitfloat:
1403 case lltok::kw_noinline:
1404 case lltok::kw_nonlazybind:
1405 case lltok::kw_noredzone:
1406 case lltok::kw_noreturn:
1407 case lltok::kw_nounwind:
1408 case lltok::kw_optnone:
1409 case lltok::kw_optsize:
1410 case lltok::kw_returns_twice:
1411 case lltok::kw_sanitize_address:
1412 case lltok::kw_sanitize_memory:
1413 case lltok::kw_sanitize_thread:
1415 case lltok::kw_sspreq:
1416 case lltok::kw_sspstrong:
1417 case lltok::kw_safestack:
1418 case lltok::kw_uwtable:
1419 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1422 case lltok::kw_readnone:
1423 case lltok::kw_readonly:
1424 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1431 /// ParseOptionalLinkage
1438 /// ::= 'linkonce_odr'
1439 /// ::= 'available_externally'
1442 /// ::= 'extern_weak'
1444 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1446 switch (Lex.getKind()) {
1447 default: Res=GlobalValue::ExternalLinkage; return false;
1448 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1449 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1450 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1451 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1452 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1453 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1454 case lltok::kw_available_externally:
1455 Res = GlobalValue::AvailableExternallyLinkage;
1457 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1458 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1459 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1460 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1467 /// ParseOptionalVisibility
1473 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1474 switch (Lex.getKind()) {
1475 default: Res = GlobalValue::DefaultVisibility; return false;
1476 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1477 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1478 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1484 /// ParseOptionalDLLStorageClass
1489 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1490 switch (Lex.getKind()) {
1491 default: Res = GlobalValue::DefaultStorageClass; return false;
1492 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1493 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1499 /// ParseOptionalCallingConv
1503 /// ::= 'intel_ocl_bicc'
1505 /// ::= 'x86_stdcallcc'
1506 /// ::= 'x86_fastcallcc'
1507 /// ::= 'x86_thiscallcc'
1508 /// ::= 'x86_vectorcallcc'
1509 /// ::= 'arm_apcscc'
1510 /// ::= 'arm_aapcscc'
1511 /// ::= 'arm_aapcs_vfpcc'
1512 /// ::= 'msp430_intrcc'
1513 /// ::= 'ptx_kernel'
1514 /// ::= 'ptx_device'
1516 /// ::= 'spir_kernel'
1517 /// ::= 'x86_64_sysvcc'
1518 /// ::= 'x86_64_win64cc'
1519 /// ::= 'webkit_jscc'
1521 /// ::= 'preserve_mostcc'
1522 /// ::= 'preserve_allcc'
1526 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1527 switch (Lex.getKind()) {
1528 default: CC = CallingConv::C; return false;
1529 case lltok::kw_ccc: CC = CallingConv::C; break;
1530 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1531 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1532 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1533 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1534 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1535 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1536 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1537 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1538 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1539 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1540 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1541 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1542 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1543 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1544 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1545 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1546 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1547 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1548 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1549 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1550 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1551 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1552 case lltok::kw_cc: {
1554 return ParseUInt32(CC);
1562 /// ParseMetadataAttachment
1564 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1565 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1567 std::string Name = Lex.getStrVal();
1568 Kind = M->getMDKindID(Name);
1571 return ParseMDNode(MD);
1574 /// ParseInstructionMetadata
1575 /// ::= !dbg !42 (',' !dbg !57)*
1576 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1578 if (Lex.getKind() != lltok::MetadataVar)
1579 return TokError("expected metadata after comma");
1583 if (ParseMetadataAttachment(MDK, N))
1586 Inst.setMetadata(MDK, N);
1587 if (MDK == LLVMContext::MD_tbaa)
1588 InstsWithTBAATag.push_back(&Inst);
1590 // If this is the end of the list, we're done.
1591 } while (EatIfPresent(lltok::comma));
1595 /// ParseOptionalFunctionMetadata
1597 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1598 while (Lex.getKind() == lltok::MetadataVar) {
1601 if (ParseMetadataAttachment(MDK, N))
1604 F.setMetadata(MDK, N);
1609 /// ParseOptionalAlignment
1612 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1614 if (!EatIfPresent(lltok::kw_align))
1616 LocTy AlignLoc = Lex.getLoc();
1617 if (ParseUInt32(Alignment)) return true;
1618 if (!isPowerOf2_32(Alignment))
1619 return Error(AlignLoc, "alignment is not a power of two");
1620 if (Alignment > Value::MaximumAlignment)
1621 return Error(AlignLoc, "huge alignments are not supported yet");
1625 /// ParseOptionalDerefAttrBytes
1627 /// ::= AttrKind '(' 4 ')'
1629 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1630 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1632 assert((AttrKind == lltok::kw_dereferenceable ||
1633 AttrKind == lltok::kw_dereferenceable_or_null) &&
1637 if (!EatIfPresent(AttrKind))
1639 LocTy ParenLoc = Lex.getLoc();
1640 if (!EatIfPresent(lltok::lparen))
1641 return Error(ParenLoc, "expected '('");
1642 LocTy DerefLoc = Lex.getLoc();
1643 if (ParseUInt64(Bytes)) return true;
1644 ParenLoc = Lex.getLoc();
1645 if (!EatIfPresent(lltok::rparen))
1646 return Error(ParenLoc, "expected ')'");
1648 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1652 /// ParseOptionalCommaAlign
1656 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1658 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1659 bool &AteExtraComma) {
1660 AteExtraComma = false;
1661 while (EatIfPresent(lltok::comma)) {
1662 // Metadata at the end is an early exit.
1663 if (Lex.getKind() == lltok::MetadataVar) {
1664 AteExtraComma = true;
1668 if (Lex.getKind() != lltok::kw_align)
1669 return Error(Lex.getLoc(), "expected metadata or 'align'");
1671 if (ParseOptionalAlignment(Alignment)) return true;
1677 /// ParseScopeAndOrdering
1678 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1681 /// This sets Scope and Ordering to the parsed values.
1682 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1683 AtomicOrdering &Ordering) {
1687 Scope = CrossThread;
1688 if (EatIfPresent(lltok::kw_singlethread))
1689 Scope = SingleThread;
1691 return ParseOrdering(Ordering);
1695 /// ::= AtomicOrdering
1697 /// This sets Ordering to the parsed value.
1698 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1699 switch (Lex.getKind()) {
1700 default: return TokError("Expected ordering on atomic instruction");
1701 case lltok::kw_unordered: Ordering = Unordered; break;
1702 case lltok::kw_monotonic: Ordering = Monotonic; break;
1703 case lltok::kw_acquire: Ordering = Acquire; break;
1704 case lltok::kw_release: Ordering = Release; break;
1705 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1706 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1712 /// ParseOptionalStackAlignment
1714 /// ::= 'alignstack' '(' 4 ')'
1715 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1717 if (!EatIfPresent(lltok::kw_alignstack))
1719 LocTy ParenLoc = Lex.getLoc();
1720 if (!EatIfPresent(lltok::lparen))
1721 return Error(ParenLoc, "expected '('");
1722 LocTy AlignLoc = Lex.getLoc();
1723 if (ParseUInt32(Alignment)) return true;
1724 ParenLoc = Lex.getLoc();
1725 if (!EatIfPresent(lltok::rparen))
1726 return Error(ParenLoc, "expected ')'");
1727 if (!isPowerOf2_32(Alignment))
1728 return Error(AlignLoc, "stack alignment is not a power of two");
1732 /// ParseIndexList - This parses the index list for an insert/extractvalue
1733 /// instruction. This sets AteExtraComma in the case where we eat an extra
1734 /// comma at the end of the line and find that it is followed by metadata.
1735 /// Clients that don't allow metadata can call the version of this function that
1736 /// only takes one argument.
1739 /// ::= (',' uint32)+
1741 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1742 bool &AteExtraComma) {
1743 AteExtraComma = false;
1745 if (Lex.getKind() != lltok::comma)
1746 return TokError("expected ',' as start of index list");
1748 while (EatIfPresent(lltok::comma)) {
1749 if (Lex.getKind() == lltok::MetadataVar) {
1750 if (Indices.empty()) return TokError("expected index");
1751 AteExtraComma = true;
1755 if (ParseUInt32(Idx)) return true;
1756 Indices.push_back(Idx);
1762 //===----------------------------------------------------------------------===//
1764 //===----------------------------------------------------------------------===//
1766 /// ParseType - Parse a type.
1767 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1768 SMLoc TypeLoc = Lex.getLoc();
1769 switch (Lex.getKind()) {
1771 return TokError(Msg);
1773 // Type ::= 'float' | 'void' (etc)
1774 Result = Lex.getTyVal();
1778 // Type ::= StructType
1779 if (ParseAnonStructType(Result, false))
1782 case lltok::lsquare:
1783 // Type ::= '[' ... ']'
1784 Lex.Lex(); // eat the lsquare.
1785 if (ParseArrayVectorType(Result, false))
1788 case lltok::less: // Either vector or packed struct.
1789 // Type ::= '<' ... '>'
1791 if (Lex.getKind() == lltok::lbrace) {
1792 if (ParseAnonStructType(Result, true) ||
1793 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1795 } else if (ParseArrayVectorType(Result, true))
1798 case lltok::LocalVar: {
1800 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1802 // If the type hasn't been defined yet, create a forward definition and
1803 // remember where that forward def'n was seen (in case it never is defined).
1805 Entry.first = StructType::create(Context, Lex.getStrVal());
1806 Entry.second = Lex.getLoc();
1808 Result = Entry.first;
1813 case lltok::LocalVarID: {
1815 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1817 // If the type hasn't been defined yet, create a forward definition and
1818 // remember where that forward def'n was seen (in case it never is defined).
1820 Entry.first = StructType::create(Context);
1821 Entry.second = Lex.getLoc();
1823 Result = Entry.first;
1829 // Parse the type suffixes.
1831 switch (Lex.getKind()) {
1834 if (!AllowVoid && Result->isVoidTy())
1835 return Error(TypeLoc, "void type only allowed for function results");
1838 // Type ::= Type '*'
1840 if (Result->isLabelTy())
1841 return TokError("basic block pointers are invalid");
1842 if (Result->isVoidTy())
1843 return TokError("pointers to void are invalid - use i8* instead");
1844 if (!PointerType::isValidElementType(Result))
1845 return TokError("pointer to this type is invalid");
1846 Result = PointerType::getUnqual(Result);
1850 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1851 case lltok::kw_addrspace: {
1852 if (Result->isLabelTy())
1853 return TokError("basic block pointers are invalid");
1854 if (Result->isVoidTy())
1855 return TokError("pointers to void are invalid; use i8* instead");
1856 if (!PointerType::isValidElementType(Result))
1857 return TokError("pointer to this type is invalid");
1859 if (ParseOptionalAddrSpace(AddrSpace) ||
1860 ParseToken(lltok::star, "expected '*' in address space"))
1863 Result = PointerType::get(Result, AddrSpace);
1867 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1869 if (ParseFunctionType(Result))
1876 /// ParseParameterList
1878 /// ::= '(' Arg (',' Arg)* ')'
1880 /// ::= Type OptionalAttributes Value OptionalAttributes
1881 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1882 PerFunctionState &PFS, bool IsMustTailCall,
1883 bool InVarArgsFunc) {
1884 if (ParseToken(lltok::lparen, "expected '(' in call"))
1887 unsigned AttrIndex = 1;
1888 while (Lex.getKind() != lltok::rparen) {
1889 // If this isn't the first argument, we need a comma.
1890 if (!ArgList.empty() &&
1891 ParseToken(lltok::comma, "expected ',' in argument list"))
1894 // Parse an ellipsis if this is a musttail call in a variadic function.
1895 if (Lex.getKind() == lltok::dotdotdot) {
1896 const char *Msg = "unexpected ellipsis in argument list for ";
1897 if (!IsMustTailCall)
1898 return TokError(Twine(Msg) + "non-musttail call");
1900 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1901 Lex.Lex(); // Lex the '...', it is purely for readability.
1902 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1905 // Parse the argument.
1907 Type *ArgTy = nullptr;
1908 AttrBuilder ArgAttrs;
1910 if (ParseType(ArgTy, ArgLoc))
1913 if (ArgTy->isMetadataTy()) {
1914 if (ParseMetadataAsValue(V, PFS))
1917 // Otherwise, handle normal operands.
1918 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1921 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1926 if (IsMustTailCall && InVarArgsFunc)
1927 return TokError("expected '...' at end of argument list for musttail call "
1928 "in varargs function");
1930 Lex.Lex(); // Lex the ')'.
1936 /// ParseArgumentList - Parse the argument list for a function type or function
1938 /// ::= '(' ArgTypeListI ')'
1942 /// ::= ArgTypeList ',' '...'
1943 /// ::= ArgType (',' ArgType)*
1945 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1948 assert(Lex.getKind() == lltok::lparen);
1949 Lex.Lex(); // eat the (.
1951 if (Lex.getKind() == lltok::rparen) {
1953 } else if (Lex.getKind() == lltok::dotdotdot) {
1957 LocTy TypeLoc = Lex.getLoc();
1958 Type *ArgTy = nullptr;
1962 if (ParseType(ArgTy) ||
1963 ParseOptionalParamAttrs(Attrs)) return true;
1965 if (ArgTy->isVoidTy())
1966 return Error(TypeLoc, "argument can not have void type");
1968 if (Lex.getKind() == lltok::LocalVar) {
1969 Name = Lex.getStrVal();
1973 if (!FunctionType::isValidArgumentType(ArgTy))
1974 return Error(TypeLoc, "invalid type for function argument");
1976 unsigned AttrIndex = 1;
1977 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1978 AttrIndex++, Attrs),
1981 while (EatIfPresent(lltok::comma)) {
1982 // Handle ... at end of arg list.
1983 if (EatIfPresent(lltok::dotdotdot)) {
1988 // Otherwise must be an argument type.
1989 TypeLoc = Lex.getLoc();
1990 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1992 if (ArgTy->isVoidTy())
1993 return Error(TypeLoc, "argument can not have void type");
1995 if (Lex.getKind() == lltok::LocalVar) {
1996 Name = Lex.getStrVal();
2002 if (!ArgTy->isFirstClassType())
2003 return Error(TypeLoc, "invalid type for function argument");
2005 ArgList.emplace_back(
2007 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2012 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2015 /// ParseFunctionType
2016 /// ::= Type ArgumentList OptionalAttrs
2017 bool LLParser::ParseFunctionType(Type *&Result) {
2018 assert(Lex.getKind() == lltok::lparen);
2020 if (!FunctionType::isValidReturnType(Result))
2021 return TokError("invalid function return type");
2023 SmallVector<ArgInfo, 8> ArgList;
2025 if (ParseArgumentList(ArgList, isVarArg))
2028 // Reject names on the arguments lists.
2029 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2030 if (!ArgList[i].Name.empty())
2031 return Error(ArgList[i].Loc, "argument name invalid in function type");
2032 if (ArgList[i].Attrs.hasAttributes(i + 1))
2033 return Error(ArgList[i].Loc,
2034 "argument attributes invalid in function type");
2037 SmallVector<Type*, 16> ArgListTy;
2038 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2039 ArgListTy.push_back(ArgList[i].Ty);
2041 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2045 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2047 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2048 SmallVector<Type*, 8> Elts;
2049 if (ParseStructBody(Elts)) return true;
2051 Result = StructType::get(Context, Elts, Packed);
2055 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2056 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2057 std::pair<Type*, LocTy> &Entry,
2059 // If the type was already defined, diagnose the redefinition.
2060 if (Entry.first && !Entry.second.isValid())
2061 return Error(TypeLoc, "redefinition of type");
2063 // If we have opaque, just return without filling in the definition for the
2064 // struct. This counts as a definition as far as the .ll file goes.
2065 if (EatIfPresent(lltok::kw_opaque)) {
2066 // This type is being defined, so clear the location to indicate this.
2067 Entry.second = SMLoc();
2069 // If this type number has never been uttered, create it.
2071 Entry.first = StructType::create(Context, Name);
2072 ResultTy = Entry.first;
2076 // If the type starts with '<', then it is either a packed struct or a vector.
2077 bool isPacked = EatIfPresent(lltok::less);
2079 // If we don't have a struct, then we have a random type alias, which we
2080 // accept for compatibility with old files. These types are not allowed to be
2081 // forward referenced and not allowed to be recursive.
2082 if (Lex.getKind() != lltok::lbrace) {
2084 return Error(TypeLoc, "forward references to non-struct type");
2088 return ParseArrayVectorType(ResultTy, true);
2089 return ParseType(ResultTy);
2092 // This type is being defined, so clear the location to indicate this.
2093 Entry.second = SMLoc();
2095 // If this type number has never been uttered, create it.
2097 Entry.first = StructType::create(Context, Name);
2099 StructType *STy = cast<StructType>(Entry.first);
2101 SmallVector<Type*, 8> Body;
2102 if (ParseStructBody(Body) ||
2103 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2106 STy->setBody(Body, isPacked);
2112 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2115 /// ::= '{' Type (',' Type)* '}'
2116 /// ::= '<' '{' '}' '>'
2117 /// ::= '<' '{' Type (',' Type)* '}' '>'
2118 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2119 assert(Lex.getKind() == lltok::lbrace);
2120 Lex.Lex(); // Consume the '{'
2122 // Handle the empty struct.
2123 if (EatIfPresent(lltok::rbrace))
2126 LocTy EltTyLoc = Lex.getLoc();
2128 if (ParseType(Ty)) return true;
2131 if (!StructType::isValidElementType(Ty))
2132 return Error(EltTyLoc, "invalid element type for struct");
2134 while (EatIfPresent(lltok::comma)) {
2135 EltTyLoc = Lex.getLoc();
2136 if (ParseType(Ty)) return true;
2138 if (!StructType::isValidElementType(Ty))
2139 return Error(EltTyLoc, "invalid element type for struct");
2144 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2147 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2148 /// token has already been consumed.
2150 /// ::= '[' APSINTVAL 'x' Types ']'
2151 /// ::= '<' APSINTVAL 'x' Types '>'
2152 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2153 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2154 Lex.getAPSIntVal().getBitWidth() > 64)
2155 return TokError("expected number in address space");
2157 LocTy SizeLoc = Lex.getLoc();
2158 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2161 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2164 LocTy TypeLoc = Lex.getLoc();
2165 Type *EltTy = nullptr;
2166 if (ParseType(EltTy)) return true;
2168 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2169 "expected end of sequential type"))
2174 return Error(SizeLoc, "zero element vector is illegal");
2175 if ((unsigned)Size != Size)
2176 return Error(SizeLoc, "size too large for vector");
2177 if (!VectorType::isValidElementType(EltTy))
2178 return Error(TypeLoc, "invalid vector element type");
2179 Result = VectorType::get(EltTy, unsigned(Size));
2181 if (!ArrayType::isValidElementType(EltTy))
2182 return Error(TypeLoc, "invalid array element type");
2183 Result = ArrayType::get(EltTy, Size);
2188 //===----------------------------------------------------------------------===//
2189 // Function Semantic Analysis.
2190 //===----------------------------------------------------------------------===//
2192 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2194 : P(p), F(f), FunctionNumber(functionNumber) {
2196 // Insert unnamed arguments into the NumberedVals list.
2197 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2200 NumberedVals.push_back(AI);
2203 LLParser::PerFunctionState::~PerFunctionState() {
2204 // If there were any forward referenced non-basicblock values, delete them.
2205 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2206 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2207 if (!isa<BasicBlock>(I->second.first)) {
2208 I->second.first->replaceAllUsesWith(
2209 UndefValue::get(I->second.first->getType()));
2210 delete I->second.first;
2211 I->second.first = nullptr;
2214 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2215 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2216 if (!isa<BasicBlock>(I->second.first)) {
2217 I->second.first->replaceAllUsesWith(
2218 UndefValue::get(I->second.first->getType()));
2219 delete I->second.first;
2220 I->second.first = nullptr;
2224 bool LLParser::PerFunctionState::FinishFunction() {
2225 if (!ForwardRefVals.empty())
2226 return P.Error(ForwardRefVals.begin()->second.second,
2227 "use of undefined value '%" + ForwardRefVals.begin()->first +
2229 if (!ForwardRefValIDs.empty())
2230 return P.Error(ForwardRefValIDs.begin()->second.second,
2231 "use of undefined value '%" +
2232 Twine(ForwardRefValIDs.begin()->first) + "'");
2237 /// GetVal - Get a value with the specified name or ID, creating a
2238 /// forward reference record if needed. This can return null if the value
2239 /// exists but does not have the right type.
2240 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2241 LocTy Loc, OperatorConstraint OC) {
2242 // Look this name up in the normal function symbol table.
2243 Value *Val = F.getValueSymbolTable().lookup(Name);
2245 // If this is a forward reference for the value, see if we already created a
2246 // forward ref record.
2248 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2249 I = ForwardRefVals.find(Name);
2250 if (I != ForwardRefVals.end())
2251 Val = I->second.first;
2254 // If we have the value in the symbol table or fwd-ref table, return it.
2256 // Check operator constraints.
2262 if (!isa<CatchPadInst>(Val)) {
2263 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2268 if (!isa<CleanupPadInst>(Val)) {
2269 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2274 if (Val->getType() == Ty) return Val;
2275 if (Ty->isLabelTy())
2276 P.Error(Loc, "'%" + Name + "' is not a basic block");
2278 P.Error(Loc, "'%" + Name + "' defined with type '" +
2279 getTypeString(Val->getType()) + "'");
2283 // Don't make placeholders with invalid type.
2284 if (!Ty->isFirstClassType()) {
2285 P.Error(Loc, "invalid use of a non-first-class type");
2289 // Otherwise, create a new forward reference for this value and remember it.
2291 if (Ty->isLabelTy()) {
2293 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2295 FwdVal = new Argument(Ty, Name);
2299 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2303 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2306 llvm_unreachable("unexpected constraint");
2310 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2314 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2315 OperatorConstraint OC) {
2316 // Look this name up in the normal function symbol table.
2317 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2319 // If this is a forward reference for the value, see if we already created a
2320 // forward ref record.
2322 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2323 I = ForwardRefValIDs.find(ID);
2324 if (I != ForwardRefValIDs.end())
2325 Val = I->second.first;
2328 // If we have the value in the symbol table or fwd-ref table, return it.
2330 // Check operator constraint.
2336 if (!isa<CatchPadInst>(Val)) {
2337 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2342 if (!isa<CleanupPadInst>(Val)) {
2343 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2348 if (Val->getType() == Ty) return Val;
2349 if (Ty->isLabelTy())
2350 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2352 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2353 getTypeString(Val->getType()) + "'");
2357 if (!Ty->isFirstClassType()) {
2358 P.Error(Loc, "invalid use of a non-first-class type");
2362 // Otherwise, create a new forward reference for this value and remember it.
2364 if (Ty->isLabelTy()) {
2366 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2368 FwdVal = new Argument(Ty);
2372 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2375 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2378 llvm_unreachable("unexpected constraint");
2382 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2386 /// SetInstName - After an instruction is parsed and inserted into its
2387 /// basic block, this installs its name.
2388 bool LLParser::PerFunctionState::SetInstName(int NameID,
2389 const std::string &NameStr,
2390 LocTy NameLoc, Instruction *Inst) {
2391 // If this instruction has void type, it cannot have a name or ID specified.
2392 if (Inst->getType()->isVoidTy()) {
2393 if (NameID != -1 || !NameStr.empty())
2394 return P.Error(NameLoc, "instructions returning void cannot have a name");
2398 // If this was a numbered instruction, verify that the instruction is the
2399 // expected value and resolve any forward references.
2400 if (NameStr.empty()) {
2401 // If neither a name nor an ID was specified, just use the next ID.
2403 NameID = NumberedVals.size();
2405 if (unsigned(NameID) != NumberedVals.size())
2406 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2407 Twine(NumberedVals.size()) + "'");
2409 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2410 ForwardRefValIDs.find(NameID);
2411 if (FI != ForwardRefValIDs.end()) {
2412 Value *Sentinel = FI->second.first;
2413 if (Sentinel->getType() != Inst->getType())
2414 return P.Error(NameLoc, "instruction forward referenced with type '" +
2415 getTypeString(FI->second.first->getType()) + "'");
2416 // Check operator constraints. We only put cleanuppads or catchpads in
2417 // the forward value map if the value is constrained to match.
2418 if (isa<CatchPadInst>(Sentinel)) {
2419 if (!isa<CatchPadInst>(Inst))
2420 return P.Error(FI->second.second,
2421 "'%" + Twine(NameID) + "' is not a catchpad");
2422 } else if (isa<CleanupPadInst>(Sentinel)) {
2423 if (!isa<CleanupPadInst>(Inst))
2424 return P.Error(FI->second.second,
2425 "'%" + Twine(NameID) + "' is not a cleanuppad");
2428 Sentinel->replaceAllUsesWith(Inst);
2430 ForwardRefValIDs.erase(FI);
2433 NumberedVals.push_back(Inst);
2437 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2438 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2439 FI = ForwardRefVals.find(NameStr);
2440 if (FI != ForwardRefVals.end()) {
2441 Value *Sentinel = FI->second.first;
2442 if (Sentinel->getType() != Inst->getType())
2443 return P.Error(NameLoc, "instruction forward referenced with type '" +
2444 getTypeString(FI->second.first->getType()) + "'");
2445 // Check operator constraints. We only put cleanuppads or catchpads in
2446 // the forward value map if the value is constrained to match.
2447 if (isa<CatchPadInst>(Sentinel)) {
2448 if (!isa<CatchPadInst>(Inst))
2449 return P.Error(FI->second.second,
2450 "'%" + NameStr + "' is not a catchpad");
2451 } else if (isa<CleanupPadInst>(Sentinel)) {
2452 if (!isa<CleanupPadInst>(Inst))
2453 return P.Error(FI->second.second,
2454 "'%" + NameStr + "' is not a cleanuppad");
2457 Sentinel->replaceAllUsesWith(Inst);
2459 ForwardRefVals.erase(FI);
2462 // Set the name on the instruction.
2463 Inst->setName(NameStr);
2465 if (Inst->getName() != NameStr)
2466 return P.Error(NameLoc, "multiple definition of local value named '" +
2471 /// GetBB - Get a basic block with the specified name or ID, creating a
2472 /// forward reference record if needed.
2473 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2475 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2476 Type::getLabelTy(F.getContext()), Loc));
2479 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2480 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2481 Type::getLabelTy(F.getContext()), Loc));
2484 /// DefineBB - Define the specified basic block, which is either named or
2485 /// unnamed. If there is an error, this returns null otherwise it returns
2486 /// the block being defined.
2487 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2491 BB = GetBB(NumberedVals.size(), Loc);
2493 BB = GetBB(Name, Loc);
2494 if (!BB) return nullptr; // Already diagnosed error.
2496 // Move the block to the end of the function. Forward ref'd blocks are
2497 // inserted wherever they happen to be referenced.
2498 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2500 // Remove the block from forward ref sets.
2502 ForwardRefValIDs.erase(NumberedVals.size());
2503 NumberedVals.push_back(BB);
2505 // BB forward references are already in the function symbol table.
2506 ForwardRefVals.erase(Name);
2512 //===----------------------------------------------------------------------===//
2514 //===----------------------------------------------------------------------===//
2516 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2517 /// type implied. For example, if we parse "4" we don't know what integer type
2518 /// it has. The value will later be combined with its type and checked for
2519 /// sanity. PFS is used to convert function-local operands of metadata (since
2520 /// metadata operands are not just parsed here but also converted to values).
2521 /// PFS can be null when we are not parsing metadata values inside a function.
2522 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2523 ID.Loc = Lex.getLoc();
2524 switch (Lex.getKind()) {
2525 default: return TokError("expected value token");
2526 case lltok::GlobalID: // @42
2527 ID.UIntVal = Lex.getUIntVal();
2528 ID.Kind = ValID::t_GlobalID;
2530 case lltok::GlobalVar: // @foo
2531 ID.StrVal = Lex.getStrVal();
2532 ID.Kind = ValID::t_GlobalName;
2534 case lltok::LocalVarID: // %42
2535 ID.UIntVal = Lex.getUIntVal();
2536 ID.Kind = ValID::t_LocalID;
2538 case lltok::LocalVar: // %foo
2539 ID.StrVal = Lex.getStrVal();
2540 ID.Kind = ValID::t_LocalName;
2543 ID.APSIntVal = Lex.getAPSIntVal();
2544 ID.Kind = ValID::t_APSInt;
2546 case lltok::APFloat:
2547 ID.APFloatVal = Lex.getAPFloatVal();
2548 ID.Kind = ValID::t_APFloat;
2550 case lltok::kw_true:
2551 ID.ConstantVal = ConstantInt::getTrue(Context);
2552 ID.Kind = ValID::t_Constant;
2554 case lltok::kw_false:
2555 ID.ConstantVal = ConstantInt::getFalse(Context);
2556 ID.Kind = ValID::t_Constant;
2558 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2559 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2560 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2562 case lltok::lbrace: {
2563 // ValID ::= '{' ConstVector '}'
2565 SmallVector<Constant*, 16> Elts;
2566 if (ParseGlobalValueVector(Elts) ||
2567 ParseToken(lltok::rbrace, "expected end of struct constant"))
2570 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2571 ID.UIntVal = Elts.size();
2572 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2573 Elts.size() * sizeof(Elts[0]));
2574 ID.Kind = ValID::t_ConstantStruct;
2578 // ValID ::= '<' ConstVector '>' --> Vector.
2579 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2581 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2583 SmallVector<Constant*, 16> Elts;
2584 LocTy FirstEltLoc = Lex.getLoc();
2585 if (ParseGlobalValueVector(Elts) ||
2587 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2588 ParseToken(lltok::greater, "expected end of constant"))
2591 if (isPackedStruct) {
2592 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2593 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2594 Elts.size() * sizeof(Elts[0]));
2595 ID.UIntVal = Elts.size();
2596 ID.Kind = ValID::t_PackedConstantStruct;
2601 return Error(ID.Loc, "constant vector must not be empty");
2603 if (!Elts[0]->getType()->isIntegerTy() &&
2604 !Elts[0]->getType()->isFloatingPointTy() &&
2605 !Elts[0]->getType()->isPointerTy())
2606 return Error(FirstEltLoc,
2607 "vector elements must have integer, pointer or floating point type");
2609 // Verify that all the vector elements have the same type.
2610 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2611 if (Elts[i]->getType() != Elts[0]->getType())
2612 return Error(FirstEltLoc,
2613 "vector element #" + Twine(i) +
2614 " is not of type '" + getTypeString(Elts[0]->getType()));
2616 ID.ConstantVal = ConstantVector::get(Elts);
2617 ID.Kind = ValID::t_Constant;
2620 case lltok::lsquare: { // Array Constant
2622 SmallVector<Constant*, 16> Elts;
2623 LocTy FirstEltLoc = Lex.getLoc();
2624 if (ParseGlobalValueVector(Elts) ||
2625 ParseToken(lltok::rsquare, "expected end of array constant"))
2628 // Handle empty element.
2630 // Use undef instead of an array because it's inconvenient to determine
2631 // the element type at this point, there being no elements to examine.
2632 ID.Kind = ValID::t_EmptyArray;
2636 if (!Elts[0]->getType()->isFirstClassType())
2637 return Error(FirstEltLoc, "invalid array element type: " +
2638 getTypeString(Elts[0]->getType()));
2640 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2642 // Verify all elements are correct type!
2643 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2644 if (Elts[i]->getType() != Elts[0]->getType())
2645 return Error(FirstEltLoc,
2646 "array element #" + Twine(i) +
2647 " is not of type '" + getTypeString(Elts[0]->getType()));
2650 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2651 ID.Kind = ValID::t_Constant;
2654 case lltok::kw_c: // c "foo"
2656 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2658 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2659 ID.Kind = ValID::t_Constant;
2662 case lltok::kw_asm: {
2663 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2665 bool HasSideEffect, AlignStack, AsmDialect;
2667 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2668 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2669 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2670 ParseStringConstant(ID.StrVal) ||
2671 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2672 ParseToken(lltok::StringConstant, "expected constraint string"))
2674 ID.StrVal2 = Lex.getStrVal();
2675 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2676 (unsigned(AsmDialect)<<2);
2677 ID.Kind = ValID::t_InlineAsm;
2681 case lltok::kw_blockaddress: {
2682 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2687 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2689 ParseToken(lltok::comma, "expected comma in block address expression")||
2690 ParseValID(Label) ||
2691 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2694 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2695 return Error(Fn.Loc, "expected function name in blockaddress");
2696 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2697 return Error(Label.Loc, "expected basic block name in blockaddress");
2699 // Try to find the function (but skip it if it's forward-referenced).
2700 GlobalValue *GV = nullptr;
2701 if (Fn.Kind == ValID::t_GlobalID) {
2702 if (Fn.UIntVal < NumberedVals.size())
2703 GV = NumberedVals[Fn.UIntVal];
2704 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2705 GV = M->getNamedValue(Fn.StrVal);
2707 Function *F = nullptr;
2709 // Confirm that it's actually a function with a definition.
2710 if (!isa<Function>(GV))
2711 return Error(Fn.Loc, "expected function name in blockaddress");
2712 F = cast<Function>(GV);
2713 if (F->isDeclaration())
2714 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2718 // Make a global variable as a placeholder for this reference.
2719 GlobalValue *&FwdRef =
2720 ForwardRefBlockAddresses.insert(std::make_pair(
2722 std::map<ValID, GlobalValue *>()))
2723 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2726 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2727 GlobalValue::InternalLinkage, nullptr, "");
2728 ID.ConstantVal = FwdRef;
2729 ID.Kind = ValID::t_Constant;
2733 // We found the function; now find the basic block. Don't use PFS, since we
2734 // might be inside a constant expression.
2736 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2737 if (Label.Kind == ValID::t_LocalID)
2738 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2740 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2742 return Error(Label.Loc, "referenced value is not a basic block");
2744 if (Label.Kind == ValID::t_LocalID)
2745 return Error(Label.Loc, "cannot take address of numeric label after "
2746 "the function is defined");
2747 BB = dyn_cast_or_null<BasicBlock>(
2748 F->getValueSymbolTable().lookup(Label.StrVal));
2750 return Error(Label.Loc, "referenced value is not a basic block");
2753 ID.ConstantVal = BlockAddress::get(F, BB);
2754 ID.Kind = ValID::t_Constant;
2758 case lltok::kw_trunc:
2759 case lltok::kw_zext:
2760 case lltok::kw_sext:
2761 case lltok::kw_fptrunc:
2762 case lltok::kw_fpext:
2763 case lltok::kw_bitcast:
2764 case lltok::kw_addrspacecast:
2765 case lltok::kw_uitofp:
2766 case lltok::kw_sitofp:
2767 case lltok::kw_fptoui:
2768 case lltok::kw_fptosi:
2769 case lltok::kw_inttoptr:
2770 case lltok::kw_ptrtoint: {
2771 unsigned Opc = Lex.getUIntVal();
2772 Type *DestTy = nullptr;
2775 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2776 ParseGlobalTypeAndValue(SrcVal) ||
2777 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2778 ParseType(DestTy) ||
2779 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2781 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2782 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2783 getTypeString(SrcVal->getType()) + "' to '" +
2784 getTypeString(DestTy) + "'");
2785 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2787 ID.Kind = ValID::t_Constant;
2790 case lltok::kw_extractvalue: {
2793 SmallVector<unsigned, 4> Indices;
2794 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2795 ParseGlobalTypeAndValue(Val) ||
2796 ParseIndexList(Indices) ||
2797 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2800 if (!Val->getType()->isAggregateType())
2801 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2802 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2803 return Error(ID.Loc, "invalid indices for extractvalue");
2804 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2805 ID.Kind = ValID::t_Constant;
2808 case lltok::kw_insertvalue: {
2810 Constant *Val0, *Val1;
2811 SmallVector<unsigned, 4> Indices;
2812 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2813 ParseGlobalTypeAndValue(Val0) ||
2814 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2815 ParseGlobalTypeAndValue(Val1) ||
2816 ParseIndexList(Indices) ||
2817 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2819 if (!Val0->getType()->isAggregateType())
2820 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2822 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2824 return Error(ID.Loc, "invalid indices for insertvalue");
2825 if (IndexedType != Val1->getType())
2826 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2827 getTypeString(Val1->getType()) +
2828 "' instead of '" + getTypeString(IndexedType) +
2830 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2831 ID.Kind = ValID::t_Constant;
2834 case lltok::kw_icmp:
2835 case lltok::kw_fcmp: {
2836 unsigned PredVal, Opc = Lex.getUIntVal();
2837 Constant *Val0, *Val1;
2839 if (ParseCmpPredicate(PredVal, Opc) ||
2840 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2841 ParseGlobalTypeAndValue(Val0) ||
2842 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2843 ParseGlobalTypeAndValue(Val1) ||
2844 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2847 if (Val0->getType() != Val1->getType())
2848 return Error(ID.Loc, "compare operands must have the same type");
2850 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2852 if (Opc == Instruction::FCmp) {
2853 if (!Val0->getType()->isFPOrFPVectorTy())
2854 return Error(ID.Loc, "fcmp requires floating point operands");
2855 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2857 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2858 if (!Val0->getType()->isIntOrIntVectorTy() &&
2859 !Val0->getType()->getScalarType()->isPointerTy())
2860 return Error(ID.Loc, "icmp requires pointer or integer operands");
2861 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2863 ID.Kind = ValID::t_Constant;
2867 // Binary Operators.
2869 case lltok::kw_fadd:
2871 case lltok::kw_fsub:
2873 case lltok::kw_fmul:
2874 case lltok::kw_udiv:
2875 case lltok::kw_sdiv:
2876 case lltok::kw_fdiv:
2877 case lltok::kw_urem:
2878 case lltok::kw_srem:
2879 case lltok::kw_frem:
2881 case lltok::kw_lshr:
2882 case lltok::kw_ashr: {
2886 unsigned Opc = Lex.getUIntVal();
2887 Constant *Val0, *Val1;
2889 LocTy ModifierLoc = Lex.getLoc();
2890 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2891 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2892 if (EatIfPresent(lltok::kw_nuw))
2894 if (EatIfPresent(lltok::kw_nsw)) {
2896 if (EatIfPresent(lltok::kw_nuw))
2899 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2900 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2901 if (EatIfPresent(lltok::kw_exact))
2904 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2905 ParseGlobalTypeAndValue(Val0) ||
2906 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2907 ParseGlobalTypeAndValue(Val1) ||
2908 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2910 if (Val0->getType() != Val1->getType())
2911 return Error(ID.Loc, "operands of constexpr must have same type");
2912 if (!Val0->getType()->isIntOrIntVectorTy()) {
2914 return Error(ModifierLoc, "nuw only applies to integer operations");
2916 return Error(ModifierLoc, "nsw only applies to integer operations");
2918 // Check that the type is valid for the operator.
2920 case Instruction::Add:
2921 case Instruction::Sub:
2922 case Instruction::Mul:
2923 case Instruction::UDiv:
2924 case Instruction::SDiv:
2925 case Instruction::URem:
2926 case Instruction::SRem:
2927 case Instruction::Shl:
2928 case Instruction::AShr:
2929 case Instruction::LShr:
2930 if (!Val0->getType()->isIntOrIntVectorTy())
2931 return Error(ID.Loc, "constexpr requires integer operands");
2933 case Instruction::FAdd:
2934 case Instruction::FSub:
2935 case Instruction::FMul:
2936 case Instruction::FDiv:
2937 case Instruction::FRem:
2938 if (!Val0->getType()->isFPOrFPVectorTy())
2939 return Error(ID.Loc, "constexpr requires fp operands");
2941 default: llvm_unreachable("Unknown binary operator!");
2944 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2945 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2946 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2947 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2949 ID.Kind = ValID::t_Constant;
2953 // Logical Operations
2956 case lltok::kw_xor: {
2957 unsigned Opc = Lex.getUIntVal();
2958 Constant *Val0, *Val1;
2960 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2961 ParseGlobalTypeAndValue(Val0) ||
2962 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2963 ParseGlobalTypeAndValue(Val1) ||
2964 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2966 if (Val0->getType() != Val1->getType())
2967 return Error(ID.Loc, "operands of constexpr must have same type");
2968 if (!Val0->getType()->isIntOrIntVectorTy())
2969 return Error(ID.Loc,
2970 "constexpr requires integer or integer vector operands");
2971 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2972 ID.Kind = ValID::t_Constant;
2976 case lltok::kw_getelementptr:
2977 case lltok::kw_shufflevector:
2978 case lltok::kw_insertelement:
2979 case lltok::kw_extractelement:
2980 case lltok::kw_select: {
2981 unsigned Opc = Lex.getUIntVal();
2982 SmallVector<Constant*, 16> Elts;
2983 bool InBounds = false;
2987 if (Opc == Instruction::GetElementPtr)
2988 InBounds = EatIfPresent(lltok::kw_inbounds);
2990 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2993 LocTy ExplicitTypeLoc = Lex.getLoc();
2994 if (Opc == Instruction::GetElementPtr) {
2995 if (ParseType(Ty) ||
2996 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3000 if (ParseGlobalValueVector(Elts) ||
3001 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3004 if (Opc == Instruction::GetElementPtr) {
3005 if (Elts.size() == 0 ||
3006 !Elts[0]->getType()->getScalarType()->isPointerTy())
3007 return Error(ID.Loc, "base of getelementptr must be a pointer");
3009 Type *BaseType = Elts[0]->getType();
3010 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3011 if (Ty != BasePointerType->getElementType())
3014 "explicit pointee type doesn't match operand's pointee type");
3016 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3017 for (Constant *Val : Indices) {
3018 Type *ValTy = Val->getType();
3019 if (!ValTy->getScalarType()->isIntegerTy())
3020 return Error(ID.Loc, "getelementptr index must be an integer");
3021 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3022 return Error(ID.Loc, "getelementptr index type missmatch");
3023 if (ValTy->isVectorTy()) {
3024 unsigned ValNumEl = ValTy->getVectorNumElements();
3025 unsigned PtrNumEl = BaseType->getVectorNumElements();
3026 if (ValNumEl != PtrNumEl)
3029 "getelementptr vector index has a wrong number of elements");
3033 SmallPtrSet<Type*, 4> Visited;
3034 if (!Indices.empty() && !Ty->isSized(&Visited))
3035 return Error(ID.Loc, "base element of getelementptr must be sized");
3037 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3038 return Error(ID.Loc, "invalid getelementptr indices");
3040 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3041 } else if (Opc == Instruction::Select) {
3042 if (Elts.size() != 3)
3043 return Error(ID.Loc, "expected three operands to select");
3044 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3046 return Error(ID.Loc, Reason);
3047 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3048 } else if (Opc == Instruction::ShuffleVector) {
3049 if (Elts.size() != 3)
3050 return Error(ID.Loc, "expected three operands to shufflevector");
3051 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3052 return Error(ID.Loc, "invalid operands to shufflevector");
3054 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3055 } else if (Opc == Instruction::ExtractElement) {
3056 if (Elts.size() != 2)
3057 return Error(ID.Loc, "expected two operands to extractelement");
3058 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3059 return Error(ID.Loc, "invalid extractelement operands");
3060 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3062 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3063 if (Elts.size() != 3)
3064 return Error(ID.Loc, "expected three operands to insertelement");
3065 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3066 return Error(ID.Loc, "invalid insertelement operands");
3068 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3071 ID.Kind = ValID::t_Constant;
3080 /// ParseGlobalValue - Parse a global value with the specified type.
3081 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3085 bool Parsed = ParseValID(ID) ||
3086 ConvertValIDToValue(Ty, ID, V, nullptr);
3087 if (V && !(C = dyn_cast<Constant>(V)))
3088 return Error(ID.Loc, "global values must be constants");
3092 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3094 return ParseType(Ty) ||
3095 ParseGlobalValue(Ty, V);
3098 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3101 LocTy KwLoc = Lex.getLoc();
3102 if (!EatIfPresent(lltok::kw_comdat))
3105 if (EatIfPresent(lltok::lparen)) {
3106 if (Lex.getKind() != lltok::ComdatVar)
3107 return TokError("expected comdat variable");
3108 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3110 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3113 if (GlobalName.empty())
3114 return TokError("comdat cannot be unnamed");
3115 C = getComdat(GlobalName, KwLoc);
3121 /// ParseGlobalValueVector
3123 /// ::= TypeAndValue (',' TypeAndValue)*
3124 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3126 if (Lex.getKind() == lltok::rbrace ||
3127 Lex.getKind() == lltok::rsquare ||
3128 Lex.getKind() == lltok::greater ||
3129 Lex.getKind() == lltok::rparen)
3133 if (ParseGlobalTypeAndValue(C)) return true;
3136 while (EatIfPresent(lltok::comma)) {
3137 if (ParseGlobalTypeAndValue(C)) return true;
3144 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3145 SmallVector<Metadata *, 16> Elts;
3146 if (ParseMDNodeVector(Elts))
3149 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3156 /// ::= !DILocation(...)
3157 bool LLParser::ParseMDNode(MDNode *&N) {
3158 if (Lex.getKind() == lltok::MetadataVar)
3159 return ParseSpecializedMDNode(N);
3161 return ParseToken(lltok::exclaim, "expected '!' here") ||
3165 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3167 if (Lex.getKind() == lltok::lbrace)
3168 return ParseMDTuple(N);
3171 return ParseMDNodeID(N);
3176 /// Structure to represent an optional metadata field.
3177 template <class FieldTy> struct MDFieldImpl {
3178 typedef MDFieldImpl ImplTy;
3182 void assign(FieldTy Val) {
3184 this->Val = std::move(Val);
3187 explicit MDFieldImpl(FieldTy Default)
3188 : Val(std::move(Default)), Seen(false) {}
3191 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3194 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3195 : ImplTy(Default), Max(Max) {}
3197 struct LineField : public MDUnsignedField {
3198 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3200 struct ColumnField : public MDUnsignedField {
3201 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3203 struct DwarfTagField : public MDUnsignedField {
3204 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3205 DwarfTagField(dwarf::Tag DefaultTag)
3206 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3208 struct DwarfAttEncodingField : public MDUnsignedField {
3209 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3211 struct DwarfVirtualityField : public MDUnsignedField {
3212 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3214 struct DwarfLangField : public MDUnsignedField {
3215 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3218 struct DIFlagField : public MDUnsignedField {
3219 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3222 struct MDSignedField : public MDFieldImpl<int64_t> {
3226 MDSignedField(int64_t Default = 0)
3227 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3228 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3229 : ImplTy(Default), Min(Min), Max(Max) {}
3232 struct MDBoolField : public MDFieldImpl<bool> {
3233 MDBoolField(bool Default = false) : ImplTy(Default) {}
3235 struct MDField : public MDFieldImpl<Metadata *> {
3238 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3240 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3241 MDConstant() : ImplTy(nullptr) {}
3243 struct MDStringField : public MDFieldImpl<MDString *> {
3245 MDStringField(bool AllowEmpty = true)
3246 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3248 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3249 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3257 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3258 MDUnsignedField &Result) {
3259 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3260 return TokError("expected unsigned integer");
3262 auto &U = Lex.getAPSIntVal();
3263 if (U.ugt(Result.Max))
3264 return TokError("value for '" + Name + "' too large, limit is " +
3266 Result.assign(U.getZExtValue());
3267 assert(Result.Val <= Result.Max && "Expected value in range");
3273 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3274 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3277 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3278 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3282 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3283 if (Lex.getKind() == lltok::APSInt)
3284 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3286 if (Lex.getKind() != lltok::DwarfTag)
3287 return TokError("expected DWARF tag");
3289 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3290 if (Tag == dwarf::DW_TAG_invalid)
3291 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3292 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3300 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3301 DwarfVirtualityField &Result) {
3302 if (Lex.getKind() == lltok::APSInt)
3303 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3305 if (Lex.getKind() != lltok::DwarfVirtuality)
3306 return TokError("expected DWARF virtuality code");
3308 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3310 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3311 Lex.getStrVal() + "'");
3312 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3313 Result.assign(Virtuality);
3319 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3320 if (Lex.getKind() == lltok::APSInt)
3321 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3323 if (Lex.getKind() != lltok::DwarfLang)
3324 return TokError("expected DWARF language");
3326 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3328 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3330 assert(Lang <= Result.Max && "Expected valid DWARF language");
3331 Result.assign(Lang);
3337 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3338 DwarfAttEncodingField &Result) {
3339 if (Lex.getKind() == lltok::APSInt)
3340 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3342 if (Lex.getKind() != lltok::DwarfAttEncoding)
3343 return TokError("expected DWARF type attribute encoding");
3345 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3347 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3348 Lex.getStrVal() + "'");
3349 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3350 Result.assign(Encoding);
3357 /// ::= DIFlagVector
3358 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3360 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3361 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3363 // Parser for a single flag.
3364 auto parseFlag = [&](unsigned &Val) {
3365 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3366 return ParseUInt32(Val);
3368 if (Lex.getKind() != lltok::DIFlag)
3369 return TokError("expected debug info flag");
3371 Val = DINode::getFlag(Lex.getStrVal());
3373 return TokError(Twine("invalid debug info flag flag '") +
3374 Lex.getStrVal() + "'");
3379 // Parse the flags and combine them together.
3380 unsigned Combined = 0;
3386 } while (EatIfPresent(lltok::bar));
3388 Result.assign(Combined);
3393 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3394 MDSignedField &Result) {
3395 if (Lex.getKind() != lltok::APSInt)
3396 return TokError("expected signed integer");
3398 auto &S = Lex.getAPSIntVal();
3400 return TokError("value for '" + Name + "' too small, limit is " +
3403 return TokError("value for '" + Name + "' too large, limit is " +
3405 Result.assign(S.getExtValue());
3406 assert(Result.Val >= Result.Min && "Expected value in range");
3407 assert(Result.Val <= Result.Max && "Expected value in range");
3413 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3414 switch (Lex.getKind()) {
3416 return TokError("expected 'true' or 'false'");
3417 case lltok::kw_true:
3418 Result.assign(true);
3420 case lltok::kw_false:
3421 Result.assign(false);
3429 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3430 if (Lex.getKind() == lltok::kw_null) {
3431 if (!Result.AllowNull)
3432 return TokError("'" + Name + "' cannot be null");
3434 Result.assign(nullptr);
3439 if (ParseMetadata(MD, nullptr))
3447 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3449 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3452 Result.assign(cast<ConstantAsMetadata>(MD));
3457 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3458 LocTy ValueLoc = Lex.getLoc();
3460 if (ParseStringConstant(S))
3463 if (!Result.AllowEmpty && S.empty())
3464 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3466 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3471 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3472 SmallVector<Metadata *, 4> MDs;
3473 if (ParseMDNodeVector(MDs))
3476 Result.assign(std::move(MDs));
3480 } // end namespace llvm
3482 template <class ParserTy>
3483 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3485 if (Lex.getKind() != lltok::LabelStr)
3486 return TokError("expected field label here");
3490 } while (EatIfPresent(lltok::comma));
3495 template <class ParserTy>
3496 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3497 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3500 if (ParseToken(lltok::lparen, "expected '(' here"))
3502 if (Lex.getKind() != lltok::rparen)
3503 if (ParseMDFieldsImplBody(parseField))
3506 ClosingLoc = Lex.getLoc();
3507 return ParseToken(lltok::rparen, "expected ')' here");
3510 template <class FieldTy>
3511 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3513 return TokError("field '" + Name + "' cannot be specified more than once");
3515 LocTy Loc = Lex.getLoc();
3517 return ParseMDField(Loc, Name, Result);
3520 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3521 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3523 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3524 if (Lex.getStrVal() == #CLASS) \
3525 return Parse##CLASS(N, IsDistinct);
3526 #include "llvm/IR/Metadata.def"
3528 return TokError("expected metadata type");
3531 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3532 #define NOP_FIELD(NAME, TYPE, INIT)
3533 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3535 return Error(ClosingLoc, "missing required field '" #NAME "'");
3536 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3537 if (Lex.getStrVal() == #NAME) \
3538 return ParseMDField(#NAME, NAME);
3539 #define PARSE_MD_FIELDS() \
3540 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3543 if (ParseMDFieldsImpl([&]() -> bool { \
3544 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3545 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3548 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3550 #define GET_OR_DISTINCT(CLASS, ARGS) \
3551 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3553 /// ParseDILocationFields:
3554 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3555 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3556 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3557 OPTIONAL(line, LineField, ); \
3558 OPTIONAL(column, ColumnField, ); \
3559 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3560 OPTIONAL(inlinedAt, MDField, );
3562 #undef VISIT_MD_FIELDS
3564 Result = GET_OR_DISTINCT(
3565 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3569 /// ParseGenericDINode:
3570 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3571 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3572 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3573 REQUIRED(tag, DwarfTagField, ); \
3574 OPTIONAL(header, MDStringField, ); \
3575 OPTIONAL(operands, MDFieldList, );
3577 #undef VISIT_MD_FIELDS
3579 Result = GET_OR_DISTINCT(GenericDINode,
3580 (Context, tag.Val, header.Val, operands.Val));
3584 /// ParseDISubrange:
3585 /// ::= !DISubrange(count: 30, lowerBound: 2)
3586 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3587 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3588 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3589 OPTIONAL(lowerBound, MDSignedField, );
3591 #undef VISIT_MD_FIELDS
3593 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3597 /// ParseDIEnumerator:
3598 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3599 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3600 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3601 REQUIRED(name, MDStringField, ); \
3602 REQUIRED(value, MDSignedField, );
3604 #undef VISIT_MD_FIELDS
3606 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3610 /// ParseDIBasicType:
3611 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3612 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3613 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3614 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3615 OPTIONAL(name, MDStringField, ); \
3616 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3617 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3618 OPTIONAL(encoding, DwarfAttEncodingField, );
3620 #undef VISIT_MD_FIELDS
3622 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3623 align.Val, encoding.Val));
3627 /// ParseDIDerivedType:
3628 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3629 /// line: 7, scope: !1, baseType: !2, size: 32,
3630 /// align: 32, offset: 0, flags: 0, extraData: !3)
3631 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3632 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3633 REQUIRED(tag, DwarfTagField, ); \
3634 OPTIONAL(name, MDStringField, ); \
3635 OPTIONAL(file, MDField, ); \
3636 OPTIONAL(line, LineField, ); \
3637 OPTIONAL(scope, MDField, ); \
3638 REQUIRED(baseType, MDField, ); \
3639 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3640 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3641 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3642 OPTIONAL(flags, DIFlagField, ); \
3643 OPTIONAL(extraData, MDField, );
3645 #undef VISIT_MD_FIELDS
3647 Result = GET_OR_DISTINCT(DIDerivedType,
3648 (Context, tag.Val, name.Val, file.Val, line.Val,
3649 scope.Val, baseType.Val, size.Val, align.Val,
3650 offset.Val, flags.Val, extraData.Val));
3654 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3655 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3656 REQUIRED(tag, DwarfTagField, ); \
3657 OPTIONAL(name, MDStringField, ); \
3658 OPTIONAL(file, MDField, ); \
3659 OPTIONAL(line, LineField, ); \
3660 OPTIONAL(scope, MDField, ); \
3661 OPTIONAL(baseType, MDField, ); \
3662 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3663 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3664 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3665 OPTIONAL(flags, DIFlagField, ); \
3666 OPTIONAL(elements, MDField, ); \
3667 OPTIONAL(runtimeLang, DwarfLangField, ); \
3668 OPTIONAL(vtableHolder, MDField, ); \
3669 OPTIONAL(templateParams, MDField, ); \
3670 OPTIONAL(identifier, MDStringField, );
3672 #undef VISIT_MD_FIELDS
3674 Result = GET_OR_DISTINCT(
3676 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3677 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3678 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3682 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3683 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3684 OPTIONAL(flags, DIFlagField, ); \
3685 REQUIRED(types, MDField, );
3687 #undef VISIT_MD_FIELDS
3689 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3693 /// ParseDIFileType:
3694 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3695 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3696 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3697 REQUIRED(filename, MDStringField, ); \
3698 REQUIRED(directory, MDStringField, );
3700 #undef VISIT_MD_FIELDS
3702 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3706 /// ParseDICompileUnit:
3707 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3708 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3709 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3710 /// enums: !1, retainedTypes: !2, subprograms: !3,
3711 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3712 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3714 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3716 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3717 REQUIRED(language, DwarfLangField, ); \
3718 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3719 OPTIONAL(producer, MDStringField, ); \
3720 OPTIONAL(isOptimized, MDBoolField, ); \
3721 OPTIONAL(flags, MDStringField, ); \
3722 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3723 OPTIONAL(splitDebugFilename, MDStringField, ); \
3724 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3725 OPTIONAL(enums, MDField, ); \
3726 OPTIONAL(retainedTypes, MDField, ); \
3727 OPTIONAL(subprograms, MDField, ); \
3728 OPTIONAL(globals, MDField, ); \
3729 OPTIONAL(imports, MDField, ); \
3730 OPTIONAL(dwoId, MDUnsignedField, );
3732 #undef VISIT_MD_FIELDS
3734 Result = DICompileUnit::getDistinct(
3735 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3736 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3737 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3741 /// ParseDISubprogram:
3742 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3743 /// file: !1, line: 7, type: !2, isLocal: false,
3744 /// isDefinition: true, scopeLine: 8, containingType: !3,
3745 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3746 /// virtualIndex: 10, flags: 11,
3747 /// isOptimized: false, function: void ()* @_Z3foov,
3748 /// templateParams: !4, declaration: !5, variables: !6)
3749 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3750 auto Loc = Lex.getLoc();
3751 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3752 OPTIONAL(scope, MDField, ); \
3753 OPTIONAL(name, MDStringField, ); \
3754 OPTIONAL(linkageName, MDStringField, ); \
3755 OPTIONAL(file, MDField, ); \
3756 OPTIONAL(line, LineField, ); \
3757 OPTIONAL(type, MDField, ); \
3758 OPTIONAL(isLocal, MDBoolField, ); \
3759 OPTIONAL(isDefinition, MDBoolField, (true)); \
3760 OPTIONAL(scopeLine, LineField, ); \
3761 OPTIONAL(containingType, MDField, ); \
3762 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3763 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3764 OPTIONAL(flags, DIFlagField, ); \
3765 OPTIONAL(isOptimized, MDBoolField, ); \
3766 OPTIONAL(function, MDConstant, ); \
3767 OPTIONAL(templateParams, MDField, ); \
3768 OPTIONAL(declaration, MDField, ); \
3769 OPTIONAL(variables, MDField, );
3771 #undef VISIT_MD_FIELDS
3773 if (isDefinition.Val && !IsDistinct)
3776 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3778 Result = GET_OR_DISTINCT(
3779 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3780 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3781 scopeLine.Val, containingType.Val, virtuality.Val,
3782 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3783 templateParams.Val, declaration.Val, variables.Val));
3787 /// ParseDILexicalBlock:
3788 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3789 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3790 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3791 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3792 OPTIONAL(file, MDField, ); \
3793 OPTIONAL(line, LineField, ); \
3794 OPTIONAL(column, ColumnField, );
3796 #undef VISIT_MD_FIELDS
3798 Result = GET_OR_DISTINCT(
3799 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3803 /// ParseDILexicalBlockFile:
3804 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3805 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3806 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3807 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3808 OPTIONAL(file, MDField, ); \
3809 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3811 #undef VISIT_MD_FIELDS
3813 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3814 (Context, scope.Val, file.Val, discriminator.Val));
3818 /// ParseDINamespace:
3819 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3820 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3821 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3822 REQUIRED(scope, MDField, ); \
3823 OPTIONAL(file, MDField, ); \
3824 OPTIONAL(name, MDStringField, ); \
3825 OPTIONAL(line, LineField, );
3827 #undef VISIT_MD_FIELDS
3829 Result = GET_OR_DISTINCT(DINamespace,
3830 (Context, scope.Val, file.Val, name.Val, line.Val));
3835 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3836 /// includePath: "/usr/include", isysroot: "/")
3837 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3838 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3839 REQUIRED(scope, MDField, ); \
3840 REQUIRED(name, MDStringField, ); \
3841 OPTIONAL(configMacros, MDStringField, ); \
3842 OPTIONAL(includePath, MDStringField, ); \
3843 OPTIONAL(isysroot, MDStringField, );
3845 #undef VISIT_MD_FIELDS
3847 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3848 configMacros.Val, includePath.Val, isysroot.Val));
3852 /// ParseDITemplateTypeParameter:
3853 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3854 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3855 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3856 OPTIONAL(name, MDStringField, ); \
3857 REQUIRED(type, MDField, );
3859 #undef VISIT_MD_FIELDS
3862 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3866 /// ParseDITemplateValueParameter:
3867 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3868 /// name: "V", type: !1, value: i32 7)
3869 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3870 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3871 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3872 OPTIONAL(name, MDStringField, ); \
3873 OPTIONAL(type, MDField, ); \
3874 REQUIRED(value, MDField, );
3876 #undef VISIT_MD_FIELDS
3878 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3879 (Context, tag.Val, name.Val, type.Val, value.Val));
3883 /// ParseDIGlobalVariable:
3884 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3885 /// file: !1, line: 7, type: !2, isLocal: false,
3886 /// isDefinition: true, variable: i32* @foo,
3887 /// declaration: !3)
3888 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3889 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3890 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3891 OPTIONAL(scope, MDField, ); \
3892 OPTIONAL(linkageName, MDStringField, ); \
3893 OPTIONAL(file, MDField, ); \
3894 OPTIONAL(line, LineField, ); \
3895 OPTIONAL(type, MDField, ); \
3896 OPTIONAL(isLocal, MDBoolField, ); \
3897 OPTIONAL(isDefinition, MDBoolField, (true)); \
3898 OPTIONAL(variable, MDConstant, ); \
3899 OPTIONAL(declaration, MDField, );
3901 #undef VISIT_MD_FIELDS
3903 Result = GET_OR_DISTINCT(DIGlobalVariable,
3904 (Context, scope.Val, name.Val, linkageName.Val,
3905 file.Val, line.Val, type.Val, isLocal.Val,
3906 isDefinition.Val, variable.Val, declaration.Val));
3910 /// ParseDILocalVariable:
3911 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3912 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3913 /// ::= !DILocalVariable(scope: !0, name: "foo",
3914 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3915 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3916 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3917 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3918 OPTIONAL(name, MDStringField, ); \
3919 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3920 OPTIONAL(file, MDField, ); \
3921 OPTIONAL(line, LineField, ); \
3922 OPTIONAL(type, MDField, ); \
3923 OPTIONAL(flags, DIFlagField, );
3925 #undef VISIT_MD_FIELDS
3927 Result = GET_OR_DISTINCT(DILocalVariable,
3928 (Context, scope.Val, name.Val, file.Val, line.Val,
3929 type.Val, arg.Val, flags.Val));
3933 /// ParseDIExpression:
3934 /// ::= !DIExpression(0, 7, -1)
3935 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3936 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3939 if (ParseToken(lltok::lparen, "expected '(' here"))
3942 SmallVector<uint64_t, 8> Elements;
3943 if (Lex.getKind() != lltok::rparen)
3945 if (Lex.getKind() == lltok::DwarfOp) {
3946 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3948 Elements.push_back(Op);
3951 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3954 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3955 return TokError("expected unsigned integer");
3957 auto &U = Lex.getAPSIntVal();
3958 if (U.ugt(UINT64_MAX))
3959 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3960 Elements.push_back(U.getZExtValue());
3962 } while (EatIfPresent(lltok::comma));
3964 if (ParseToken(lltok::rparen, "expected ')' here"))
3967 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3971 /// ParseDIObjCProperty:
3972 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3973 /// getter: "getFoo", attributes: 7, type: !2)
3974 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3975 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3976 OPTIONAL(name, MDStringField, ); \
3977 OPTIONAL(file, MDField, ); \
3978 OPTIONAL(line, LineField, ); \
3979 OPTIONAL(setter, MDStringField, ); \
3980 OPTIONAL(getter, MDStringField, ); \
3981 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3982 OPTIONAL(type, MDField, );
3984 #undef VISIT_MD_FIELDS
3986 Result = GET_OR_DISTINCT(DIObjCProperty,
3987 (Context, name.Val, file.Val, line.Val, setter.Val,
3988 getter.Val, attributes.Val, type.Val));
3992 /// ParseDIImportedEntity:
3993 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3994 /// line: 7, name: "foo")
3995 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3996 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3997 REQUIRED(tag, DwarfTagField, ); \
3998 REQUIRED(scope, MDField, ); \
3999 OPTIONAL(entity, MDField, ); \
4000 OPTIONAL(line, LineField, ); \
4001 OPTIONAL(name, MDStringField, );
4003 #undef VISIT_MD_FIELDS
4005 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4006 entity.Val, line.Val, name.Val));
4010 #undef PARSE_MD_FIELD
4012 #undef REQUIRE_FIELD
4013 #undef DECLARE_FIELD
4015 /// ParseMetadataAsValue
4016 /// ::= metadata i32 %local
4017 /// ::= metadata i32 @global
4018 /// ::= metadata i32 7
4020 /// ::= metadata !{...}
4021 /// ::= metadata !"string"
4022 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4023 // Note: the type 'metadata' has already been parsed.
4025 if (ParseMetadata(MD, &PFS))
4028 V = MetadataAsValue::get(Context, MD);
4032 /// ParseValueAsMetadata
4036 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4037 PerFunctionState *PFS) {
4040 if (ParseType(Ty, TypeMsg, Loc))
4042 if (Ty->isMetadataTy())
4043 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4046 if (ParseValue(Ty, V, PFS))
4049 MD = ValueAsMetadata::get(V);
4060 /// ::= !DILocation(...)
4061 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4062 if (Lex.getKind() == lltok::MetadataVar) {
4064 if (ParseSpecializedMDNode(N))
4072 if (Lex.getKind() != lltok::exclaim)
4073 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4076 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4080 // ::= '!' STRINGCONSTANT
4081 if (Lex.getKind() == lltok::StringConstant) {
4083 if (ParseMDString(S))
4093 if (ParseMDNodeTail(N))
4100 //===----------------------------------------------------------------------===//
4101 // Function Parsing.
4102 //===----------------------------------------------------------------------===//
4104 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4105 PerFunctionState *PFS,
4106 OperatorConstraint OC) {
4107 if (Ty->isFunctionTy())
4108 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4110 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4113 return Error(ID.Loc, "Catchpad value required in this position");
4115 return Error(ID.Loc, "Cleanuppad value required in this position");
4117 llvm_unreachable("Unexpected constraint kind");
4122 case ValID::t_LocalID:
4123 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4124 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4125 return V == nullptr;
4126 case ValID::t_LocalName:
4127 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4128 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4129 return V == nullptr;
4130 case ValID::t_InlineAsm: {
4132 if (!InlineAsm::Verify(ID.FTy, ID.StrVal2))
4133 return Error(ID.Loc, "invalid type for inline asm constraint string");
4134 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4135 (ID.UIntVal >> 1) & 1,
4136 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4139 case ValID::t_GlobalName:
4140 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4141 return V == nullptr;
4142 case ValID::t_GlobalID:
4143 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4144 return V == nullptr;
4145 case ValID::t_APSInt:
4146 if (!Ty->isIntegerTy())
4147 return Error(ID.Loc, "integer constant must have integer type");
4148 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4149 V = ConstantInt::get(Context, ID.APSIntVal);
4151 case ValID::t_APFloat:
4152 if (!Ty->isFloatingPointTy() ||
4153 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4154 return Error(ID.Loc, "floating point constant invalid for type");
4156 // The lexer has no type info, so builds all half, float, and double FP
4157 // constants as double. Fix this here. Long double does not need this.
4158 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4161 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4163 else if (Ty->isFloatTy())
4164 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4167 V = ConstantFP::get(Context, ID.APFloatVal);
4169 if (V->getType() != Ty)
4170 return Error(ID.Loc, "floating point constant does not have type '" +
4171 getTypeString(Ty) + "'");
4175 if (!Ty->isPointerTy())
4176 return Error(ID.Loc, "null must be a pointer type");
4177 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4179 case ValID::t_Undef:
4180 // FIXME: LabelTy should not be a first-class type.
4181 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4182 return Error(ID.Loc, "invalid type for undef constant");
4183 V = UndefValue::get(Ty);
4185 case ValID::t_EmptyArray:
4186 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4187 return Error(ID.Loc, "invalid empty array initializer");
4188 V = UndefValue::get(Ty);
4191 // FIXME: LabelTy should not be a first-class type.
4192 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4193 return Error(ID.Loc, "invalid type for null constant");
4194 V = Constant::getNullValue(Ty);
4196 case ValID::t_Constant:
4197 if (ID.ConstantVal->getType() != Ty)
4198 return Error(ID.Loc, "constant expression type mismatch");
4202 case ValID::t_ConstantStruct:
4203 case ValID::t_PackedConstantStruct:
4204 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4205 if (ST->getNumElements() != ID.UIntVal)
4206 return Error(ID.Loc,
4207 "initializer with struct type has wrong # elements");
4208 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4209 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4211 // Verify that the elements are compatible with the structtype.
4212 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4213 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4214 return Error(ID.Loc, "element " + Twine(i) +
4215 " of struct initializer doesn't match struct element type");
4217 V = ConstantStruct::get(
4218 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4220 return Error(ID.Loc, "constant expression type mismatch");
4223 llvm_unreachable("Invalid ValID");
4226 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4229 auto Loc = Lex.getLoc();
4230 if (ParseValID(ID, /*PFS=*/nullptr))
4233 case ValID::t_APSInt:
4234 case ValID::t_APFloat:
4235 case ValID::t_Constant:
4236 case ValID::t_ConstantStruct:
4237 case ValID::t_PackedConstantStruct: {
4239 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4241 assert(isa<Constant>(V) && "Expected a constant value");
4242 C = cast<Constant>(V);
4246 return Error(Loc, "expected a constant value");
4250 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4251 OperatorConstraint OC) {
4254 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4257 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4259 return ParseType(Ty) ||
4260 ParseValue(Ty, V, PFS);
4263 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4264 PerFunctionState &PFS) {
4267 if (ParseTypeAndValue(V, PFS)) return true;
4268 if (!isa<BasicBlock>(V))
4269 return Error(Loc, "expected a basic block");
4270 BB = cast<BasicBlock>(V);
4276 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4277 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4278 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4279 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4280 // Parse the linkage.
4281 LocTy LinkageLoc = Lex.getLoc();
4284 unsigned Visibility;
4285 unsigned DLLStorageClass;
4286 AttrBuilder RetAttrs;
4288 Type *RetType = nullptr;
4289 LocTy RetTypeLoc = Lex.getLoc();
4290 if (ParseOptionalLinkage(Linkage) ||
4291 ParseOptionalVisibility(Visibility) ||
4292 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4293 ParseOptionalCallingConv(CC) ||
4294 ParseOptionalReturnAttrs(RetAttrs) ||
4295 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4298 // Verify that the linkage is ok.
4299 switch ((GlobalValue::LinkageTypes)Linkage) {
4300 case GlobalValue::ExternalLinkage:
4301 break; // always ok.
4302 case GlobalValue::ExternalWeakLinkage:
4304 return Error(LinkageLoc, "invalid linkage for function definition");
4306 case GlobalValue::PrivateLinkage:
4307 case GlobalValue::InternalLinkage:
4308 case GlobalValue::AvailableExternallyLinkage:
4309 case GlobalValue::LinkOnceAnyLinkage:
4310 case GlobalValue::LinkOnceODRLinkage:
4311 case GlobalValue::WeakAnyLinkage:
4312 case GlobalValue::WeakODRLinkage:
4314 return Error(LinkageLoc, "invalid linkage for function declaration");
4316 case GlobalValue::AppendingLinkage:
4317 case GlobalValue::CommonLinkage:
4318 return Error(LinkageLoc, "invalid function linkage type");
4321 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4322 return Error(LinkageLoc,
4323 "symbol with local linkage must have default visibility");
4325 if (!FunctionType::isValidReturnType(RetType))
4326 return Error(RetTypeLoc, "invalid function return type");
4328 LocTy NameLoc = Lex.getLoc();
4330 std::string FunctionName;
4331 if (Lex.getKind() == lltok::GlobalVar) {
4332 FunctionName = Lex.getStrVal();
4333 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4334 unsigned NameID = Lex.getUIntVal();
4336 if (NameID != NumberedVals.size())
4337 return TokError("function expected to be numbered '%" +
4338 Twine(NumberedVals.size()) + "'");
4340 return TokError("expected function name");
4345 if (Lex.getKind() != lltok::lparen)
4346 return TokError("expected '(' in function argument list");
4348 SmallVector<ArgInfo, 8> ArgList;
4350 AttrBuilder FuncAttrs;
4351 std::vector<unsigned> FwdRefAttrGrps;
4353 std::string Section;
4357 LocTy UnnamedAddrLoc;
4358 Constant *Prefix = nullptr;
4359 Constant *Prologue = nullptr;
4360 Constant *PersonalityFn = nullptr;
4363 if (ParseArgumentList(ArgList, isVarArg) ||
4364 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4366 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4368 (EatIfPresent(lltok::kw_section) &&
4369 ParseStringConstant(Section)) ||
4370 parseOptionalComdat(FunctionName, C) ||
4371 ParseOptionalAlignment(Alignment) ||
4372 (EatIfPresent(lltok::kw_gc) &&
4373 ParseStringConstant(GC)) ||
4374 (EatIfPresent(lltok::kw_prefix) &&
4375 ParseGlobalTypeAndValue(Prefix)) ||
4376 (EatIfPresent(lltok::kw_prologue) &&
4377 ParseGlobalTypeAndValue(Prologue)) ||
4378 (EatIfPresent(lltok::kw_personality) &&
4379 ParseGlobalTypeAndValue(PersonalityFn)))
4382 if (FuncAttrs.contains(Attribute::Builtin))
4383 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4385 // If the alignment was parsed as an attribute, move to the alignment field.
4386 if (FuncAttrs.hasAlignmentAttr()) {
4387 Alignment = FuncAttrs.getAlignment();
4388 FuncAttrs.removeAttribute(Attribute::Alignment);
4391 // Okay, if we got here, the function is syntactically valid. Convert types
4392 // and do semantic checks.
4393 std::vector<Type*> ParamTypeList;
4394 SmallVector<AttributeSet, 8> Attrs;
4396 if (RetAttrs.hasAttributes())
4397 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4398 AttributeSet::ReturnIndex,
4401 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4402 ParamTypeList.push_back(ArgList[i].Ty);
4403 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4404 AttrBuilder B(ArgList[i].Attrs, i + 1);
4405 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4409 if (FuncAttrs.hasAttributes())
4410 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4411 AttributeSet::FunctionIndex,
4414 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4416 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4417 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4420 FunctionType::get(RetType, ParamTypeList, isVarArg);
4421 PointerType *PFT = PointerType::getUnqual(FT);
4424 if (!FunctionName.empty()) {
4425 // If this was a definition of a forward reference, remove the definition
4426 // from the forward reference table and fill in the forward ref.
4427 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4428 ForwardRefVals.find(FunctionName);
4429 if (FRVI != ForwardRefVals.end()) {
4430 Fn = M->getFunction(FunctionName);
4432 return Error(FRVI->second.second, "invalid forward reference to "
4433 "function as global value!");
4434 if (Fn->getType() != PFT)
4435 return Error(FRVI->second.second, "invalid forward reference to "
4436 "function '" + FunctionName + "' with wrong type!");
4438 ForwardRefVals.erase(FRVI);
4439 } else if ((Fn = M->getFunction(FunctionName))) {
4440 // Reject redefinitions.
4441 return Error(NameLoc, "invalid redefinition of function '" +
4442 FunctionName + "'");
4443 } else if (M->getNamedValue(FunctionName)) {
4444 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4448 // If this is a definition of a forward referenced function, make sure the
4450 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4451 = ForwardRefValIDs.find(NumberedVals.size());
4452 if (I != ForwardRefValIDs.end()) {
4453 Fn = cast<Function>(I->second.first);
4454 if (Fn->getType() != PFT)
4455 return Error(NameLoc, "type of definition and forward reference of '@" +
4456 Twine(NumberedVals.size()) + "' disagree");
4457 ForwardRefValIDs.erase(I);
4462 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4463 else // Move the forward-reference to the correct spot in the module.
4464 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4466 if (FunctionName.empty())
4467 NumberedVals.push_back(Fn);
4469 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4470 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4471 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4472 Fn->setCallingConv(CC);
4473 Fn->setAttributes(PAL);
4474 Fn->setUnnamedAddr(UnnamedAddr);
4475 Fn->setAlignment(Alignment);
4476 Fn->setSection(Section);
4478 Fn->setPersonalityFn(PersonalityFn);
4479 if (!GC.empty()) Fn->setGC(GC.c_str());
4480 Fn->setPrefixData(Prefix);
4481 Fn->setPrologueData(Prologue);
4482 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4484 // Add all of the arguments we parsed to the function.
4485 Function::arg_iterator ArgIt = Fn->arg_begin();
4486 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4487 // If the argument has a name, insert it into the argument symbol table.
4488 if (ArgList[i].Name.empty()) continue;
4490 // Set the name, if it conflicted, it will be auto-renamed.
4491 ArgIt->setName(ArgList[i].Name);
4493 if (ArgIt->getName() != ArgList[i].Name)
4494 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4495 ArgList[i].Name + "'");
4501 // Check the declaration has no block address forward references.
4503 if (FunctionName.empty()) {
4504 ID.Kind = ValID::t_GlobalID;
4505 ID.UIntVal = NumberedVals.size() - 1;
4507 ID.Kind = ValID::t_GlobalName;
4508 ID.StrVal = FunctionName;
4510 auto Blocks = ForwardRefBlockAddresses.find(ID);
4511 if (Blocks != ForwardRefBlockAddresses.end())
4512 return Error(Blocks->first.Loc,
4513 "cannot take blockaddress inside a declaration");
4517 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4519 if (FunctionNumber == -1) {
4520 ID.Kind = ValID::t_GlobalName;
4521 ID.StrVal = F.getName();
4523 ID.Kind = ValID::t_GlobalID;
4524 ID.UIntVal = FunctionNumber;
4527 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4528 if (Blocks == P.ForwardRefBlockAddresses.end())
4531 for (const auto &I : Blocks->second) {
4532 const ValID &BBID = I.first;
4533 GlobalValue *GV = I.second;
4535 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4536 "Expected local id or name");
4538 if (BBID.Kind == ValID::t_LocalName)
4539 BB = GetBB(BBID.StrVal, BBID.Loc);
4541 BB = GetBB(BBID.UIntVal, BBID.Loc);
4543 return P.Error(BBID.Loc, "referenced value is not a basic block");
4545 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4546 GV->eraseFromParent();
4549 P.ForwardRefBlockAddresses.erase(Blocks);
4553 /// ParseFunctionBody
4554 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4555 bool LLParser::ParseFunctionBody(Function &Fn) {
4556 if (Lex.getKind() != lltok::lbrace)
4557 return TokError("expected '{' in function body");
4558 Lex.Lex(); // eat the {.
4560 int FunctionNumber = -1;
4561 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4563 PerFunctionState PFS(*this, Fn, FunctionNumber);
4565 // Resolve block addresses and allow basic blocks to be forward-declared
4566 // within this function.
4567 if (PFS.resolveForwardRefBlockAddresses())
4569 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4571 // We need at least one basic block.
4572 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4573 return TokError("function body requires at least one basic block");
4575 while (Lex.getKind() != lltok::rbrace &&
4576 Lex.getKind() != lltok::kw_uselistorder)
4577 if (ParseBasicBlock(PFS)) return true;
4579 while (Lex.getKind() != lltok::rbrace)
4580 if (ParseUseListOrder(&PFS))
4586 // Verify function is ok.
4587 return PFS.FinishFunction();
4591 /// ::= LabelStr? Instruction*
4592 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4593 // If this basic block starts out with a name, remember it.
4595 LocTy NameLoc = Lex.getLoc();
4596 if (Lex.getKind() == lltok::LabelStr) {
4597 Name = Lex.getStrVal();
4601 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4603 return Error(NameLoc,
4604 "unable to create block named '" + Name + "'");
4606 std::string NameStr;
4608 // Parse the instructions in this block until we get a terminator.
4611 // This instruction may have three possibilities for a name: a) none
4612 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4613 LocTy NameLoc = Lex.getLoc();
4617 if (Lex.getKind() == lltok::LocalVarID) {
4618 NameID = Lex.getUIntVal();
4620 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4622 } else if (Lex.getKind() == lltok::LocalVar) {
4623 NameStr = Lex.getStrVal();
4625 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4629 switch (ParseInstruction(Inst, BB, PFS)) {
4630 default: llvm_unreachable("Unknown ParseInstruction result!");
4631 case InstError: return true;
4633 BB->getInstList().push_back(Inst);
4635 // With a normal result, we check to see if the instruction is followed by
4636 // a comma and metadata.
4637 if (EatIfPresent(lltok::comma))
4638 if (ParseInstructionMetadata(*Inst))
4641 case InstExtraComma:
4642 BB->getInstList().push_back(Inst);
4644 // If the instruction parser ate an extra comma at the end of it, it
4645 // *must* be followed by metadata.
4646 if (ParseInstructionMetadata(*Inst))
4651 // Set the name on the instruction.
4652 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4653 } while (!isa<TerminatorInst>(Inst));
4658 //===----------------------------------------------------------------------===//
4659 // Instruction Parsing.
4660 //===----------------------------------------------------------------------===//
4662 /// ParseInstruction - Parse one of the many different instructions.
4664 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4665 PerFunctionState &PFS) {
4666 lltok::Kind Token = Lex.getKind();
4667 if (Token == lltok::Eof)
4668 return TokError("found end of file when expecting more instructions");
4669 LocTy Loc = Lex.getLoc();
4670 unsigned KeywordVal = Lex.getUIntVal();
4671 Lex.Lex(); // Eat the keyword.
4674 default: return Error(Loc, "expected instruction opcode");
4675 // Terminator Instructions.
4676 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4677 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4678 case lltok::kw_br: return ParseBr(Inst, PFS);
4679 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4680 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4681 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4682 case lltok::kw_resume: return ParseResume(Inst, PFS);
4683 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4684 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4685 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4686 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4687 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4688 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4689 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4690 // Binary Operators.
4694 case lltok::kw_shl: {
4695 bool NUW = EatIfPresent(lltok::kw_nuw);
4696 bool NSW = EatIfPresent(lltok::kw_nsw);
4697 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4699 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4701 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4702 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4705 case lltok::kw_fadd:
4706 case lltok::kw_fsub:
4707 case lltok::kw_fmul:
4708 case lltok::kw_fdiv:
4709 case lltok::kw_frem: {
4710 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4711 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4715 Inst->setFastMathFlags(FMF);
4719 case lltok::kw_sdiv:
4720 case lltok::kw_udiv:
4721 case lltok::kw_lshr:
4722 case lltok::kw_ashr: {
4723 bool Exact = EatIfPresent(lltok::kw_exact);
4725 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4726 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4730 case lltok::kw_urem:
4731 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4734 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4735 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4736 case lltok::kw_fcmp: {
4737 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4738 int Res = ParseCompare(Inst, PFS, KeywordVal);
4742 Inst->setFastMathFlags(FMF);
4747 case lltok::kw_trunc:
4748 case lltok::kw_zext:
4749 case lltok::kw_sext:
4750 case lltok::kw_fptrunc:
4751 case lltok::kw_fpext:
4752 case lltok::kw_bitcast:
4753 case lltok::kw_addrspacecast:
4754 case lltok::kw_uitofp:
4755 case lltok::kw_sitofp:
4756 case lltok::kw_fptoui:
4757 case lltok::kw_fptosi:
4758 case lltok::kw_inttoptr:
4759 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4761 case lltok::kw_select: return ParseSelect(Inst, PFS);
4762 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4763 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4764 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4765 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4766 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4767 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4769 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4770 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4771 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4773 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4774 case lltok::kw_load: return ParseLoad(Inst, PFS);
4775 case lltok::kw_store: return ParseStore(Inst, PFS);
4776 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4777 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4778 case lltok::kw_fence: return ParseFence(Inst, PFS);
4779 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4780 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4781 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4785 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4786 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4787 if (Opc == Instruction::FCmp) {
4788 switch (Lex.getKind()) {
4789 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4790 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4791 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4792 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4793 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4794 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4795 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4796 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4797 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4798 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4799 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4800 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4801 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4802 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4803 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4804 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4805 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4808 switch (Lex.getKind()) {
4809 default: return TokError("expected icmp predicate (e.g. 'eq')");
4810 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4811 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4812 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4813 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4814 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4815 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4816 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4817 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4818 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4819 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4826 //===----------------------------------------------------------------------===//
4827 // Terminator Instructions.
4828 //===----------------------------------------------------------------------===//
4830 /// ParseRet - Parse a return instruction.
4831 /// ::= 'ret' void (',' !dbg, !1)*
4832 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4833 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4834 PerFunctionState &PFS) {
4835 SMLoc TypeLoc = Lex.getLoc();
4837 if (ParseType(Ty, true /*void allowed*/)) return true;
4839 Type *ResType = PFS.getFunction().getReturnType();
4841 if (Ty->isVoidTy()) {
4842 if (!ResType->isVoidTy())
4843 return Error(TypeLoc, "value doesn't match function result type '" +
4844 getTypeString(ResType) + "'");
4846 Inst = ReturnInst::Create(Context);
4851 if (ParseValue(Ty, RV, PFS)) return true;
4853 if (ResType != RV->getType())
4854 return Error(TypeLoc, "value doesn't match function result type '" +
4855 getTypeString(ResType) + "'");
4857 Inst = ReturnInst::Create(Context, RV);
4863 /// ::= 'br' TypeAndValue
4864 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4865 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4868 BasicBlock *Op1, *Op2;
4869 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4871 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4872 Inst = BranchInst::Create(BB);
4876 if (Op0->getType() != Type::getInt1Ty(Context))
4877 return Error(Loc, "branch condition must have 'i1' type");
4879 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4880 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4881 ParseToken(lltok::comma, "expected ',' after true destination") ||
4882 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4885 Inst = BranchInst::Create(Op1, Op2, Op0);
4891 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4893 /// ::= (TypeAndValue ',' TypeAndValue)*
4894 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4895 LocTy CondLoc, BBLoc;
4897 BasicBlock *DefaultBB;
4898 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4899 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4900 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4901 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4904 if (!Cond->getType()->isIntegerTy())
4905 return Error(CondLoc, "switch condition must have integer type");
4907 // Parse the jump table pairs.
4908 SmallPtrSet<Value*, 32> SeenCases;
4909 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4910 while (Lex.getKind() != lltok::rsquare) {
4914 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4915 ParseToken(lltok::comma, "expected ',' after case value") ||
4916 ParseTypeAndBasicBlock(DestBB, PFS))
4919 if (!SeenCases.insert(Constant).second)
4920 return Error(CondLoc, "duplicate case value in switch");
4921 if (!isa<ConstantInt>(Constant))
4922 return Error(CondLoc, "case value is not a constant integer");
4924 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4927 Lex.Lex(); // Eat the ']'.
4929 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4930 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4931 SI->addCase(Table[i].first, Table[i].second);
4938 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4939 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4942 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4943 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4944 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4947 if (!Address->getType()->isPointerTy())
4948 return Error(AddrLoc, "indirectbr address must have pointer type");
4950 // Parse the destination list.
4951 SmallVector<BasicBlock*, 16> DestList;
4953 if (Lex.getKind() != lltok::rsquare) {
4955 if (ParseTypeAndBasicBlock(DestBB, PFS))
4957 DestList.push_back(DestBB);
4959 while (EatIfPresent(lltok::comma)) {
4960 if (ParseTypeAndBasicBlock(DestBB, PFS))
4962 DestList.push_back(DestBB);
4966 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4969 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4970 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4971 IBI->addDestination(DestList[i]);
4978 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4979 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4980 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4981 LocTy CallLoc = Lex.getLoc();
4982 AttrBuilder RetAttrs, FnAttrs;
4983 std::vector<unsigned> FwdRefAttrGrps;
4986 Type *RetType = nullptr;
4989 SmallVector<ParamInfo, 16> ArgList;
4991 BasicBlock *NormalBB, *UnwindBB;
4992 if (ParseOptionalCallingConv(CC) ||
4993 ParseOptionalReturnAttrs(RetAttrs) ||
4994 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4995 ParseValID(CalleeID) ||
4996 ParseParameterList(ArgList, PFS) ||
4997 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4999 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5000 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5001 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5002 ParseTypeAndBasicBlock(UnwindBB, PFS))
5005 // If RetType is a non-function pointer type, then this is the short syntax
5006 // for the call, which means that RetType is just the return type. Infer the
5007 // rest of the function argument types from the arguments that are present.
5008 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5010 // Pull out the types of all of the arguments...
5011 std::vector<Type*> ParamTypes;
5012 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5013 ParamTypes.push_back(ArgList[i].V->getType());
5015 if (!FunctionType::isValidReturnType(RetType))
5016 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5018 Ty = FunctionType::get(RetType, ParamTypes, false);
5023 // Look up the callee.
5025 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5028 // Set up the Attribute for the function.
5029 SmallVector<AttributeSet, 8> Attrs;
5030 if (RetAttrs.hasAttributes())
5031 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5032 AttributeSet::ReturnIndex,
5035 SmallVector<Value*, 8> Args;
5037 // Loop through FunctionType's arguments and ensure they are specified
5038 // correctly. Also, gather any parameter attributes.
5039 FunctionType::param_iterator I = Ty->param_begin();
5040 FunctionType::param_iterator E = Ty->param_end();
5041 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5042 Type *ExpectedTy = nullptr;
5045 } else if (!Ty->isVarArg()) {
5046 return Error(ArgList[i].Loc, "too many arguments specified");
5049 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5050 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5051 getTypeString(ExpectedTy) + "'");
5052 Args.push_back(ArgList[i].V);
5053 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5054 AttrBuilder B(ArgList[i].Attrs, i + 1);
5055 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5060 return Error(CallLoc, "not enough parameters specified for call");
5062 if (FnAttrs.hasAttributes()) {
5063 if (FnAttrs.hasAlignmentAttr())
5064 return Error(CallLoc, "invoke instructions may not have an alignment");
5066 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5067 AttributeSet::FunctionIndex,
5071 // Finish off the Attribute and check them
5072 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5074 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
5075 II->setCallingConv(CC);
5076 II->setAttributes(PAL);
5077 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5083 /// ::= 'resume' TypeAndValue
5084 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5085 Value *Exn; LocTy ExnLoc;
5086 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5089 ResumeInst *RI = ResumeInst::Create(Exn);
5094 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5095 PerFunctionState &PFS) {
5096 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5099 while (Lex.getKind() != lltok::rsquare) {
5100 // If this isn't the first argument, we need a comma.
5101 if (!Args.empty() &&
5102 ParseToken(lltok::comma, "expected ',' in argument list"))
5105 // Parse the argument.
5107 Type *ArgTy = nullptr;
5108 if (ParseType(ArgTy, ArgLoc))
5112 if (ArgTy->isMetadataTy()) {
5113 if (ParseMetadataAsValue(V, PFS))
5116 if (ParseValue(ArgTy, V, PFS))
5122 Lex.Lex(); // Lex the ']'.
5127 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5128 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5129 Value *CleanupPad = nullptr;
5131 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5134 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5137 BasicBlock *UnwindBB = nullptr;
5138 if (Lex.getKind() == lltok::kw_to) {
5140 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5143 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5148 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5153 /// ::= 'catchret' Value 'to' TypeAndValue
5154 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5155 Value *CatchPad = nullptr;
5157 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5161 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5162 ParseTypeAndBasicBlock(BB, PFS))
5165 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5170 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5171 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5172 SmallVector<Value *, 8> Args;
5173 if (ParseExceptionArgs(Args, PFS))
5176 BasicBlock *NormalBB, *UnwindBB;
5177 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5178 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5179 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5180 ParseTypeAndBasicBlock(UnwindBB, PFS))
5183 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5187 /// ParseTerminatePad
5188 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5189 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5190 SmallVector<Value *, 8> Args;
5191 if (ParseExceptionArgs(Args, PFS))
5194 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5197 BasicBlock *UnwindBB = nullptr;
5198 if (Lex.getKind() == lltok::kw_to) {
5200 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5203 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5208 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5213 /// ::= 'cleanuppad' ParamList
5214 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5215 SmallVector<Value *, 8> Args;
5216 if (ParseExceptionArgs(Args, PFS))
5219 Inst = CleanupPadInst::Create(Context, Args);
5223 /// ParseCatchEndPad
5224 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5225 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5226 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5229 BasicBlock *UnwindBB = nullptr;
5230 if (Lex.getKind() == lltok::kw_to) {
5232 if (Lex.getKind() == lltok::kw_caller) {
5238 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5243 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5247 /// ParseCatchEndPad
5248 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5249 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5250 Value *CleanupPad = nullptr;
5252 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5255 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5258 BasicBlock *UnwindBB = nullptr;
5259 if (Lex.getKind() == lltok::kw_to) {
5261 if (Lex.getKind() == lltok::kw_caller) {
5267 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5272 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5276 //===----------------------------------------------------------------------===//
5277 // Binary Operators.
5278 //===----------------------------------------------------------------------===//
5281 /// ::= ArithmeticOps TypeAndValue ',' Value
5283 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5284 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5285 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5286 unsigned Opc, unsigned OperandType) {
5287 LocTy Loc; Value *LHS, *RHS;
5288 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5289 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5290 ParseValue(LHS->getType(), RHS, PFS))
5294 switch (OperandType) {
5295 default: llvm_unreachable("Unknown operand type!");
5296 case 0: // int or FP.
5297 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5298 LHS->getType()->isFPOrFPVectorTy();
5300 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5301 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5305 return Error(Loc, "invalid operand type for instruction");
5307 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5312 /// ::= ArithmeticOps TypeAndValue ',' Value {
5313 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5315 LocTy Loc; Value *LHS, *RHS;
5316 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5317 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5318 ParseValue(LHS->getType(), RHS, PFS))
5321 if (!LHS->getType()->isIntOrIntVectorTy())
5322 return Error(Loc,"instruction requires integer or integer vector operands");
5324 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5330 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5331 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5332 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5334 // Parse the integer/fp comparison predicate.
5338 if (ParseCmpPredicate(Pred, Opc) ||
5339 ParseTypeAndValue(LHS, Loc, PFS) ||
5340 ParseToken(lltok::comma, "expected ',' after compare value") ||
5341 ParseValue(LHS->getType(), RHS, PFS))
5344 if (Opc == Instruction::FCmp) {
5345 if (!LHS->getType()->isFPOrFPVectorTy())
5346 return Error(Loc, "fcmp requires floating point operands");
5347 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5349 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5350 if (!LHS->getType()->isIntOrIntVectorTy() &&
5351 !LHS->getType()->getScalarType()->isPointerTy())
5352 return Error(Loc, "icmp requires integer operands");
5353 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5358 //===----------------------------------------------------------------------===//
5359 // Other Instructions.
5360 //===----------------------------------------------------------------------===//
5364 /// ::= CastOpc TypeAndValue 'to' Type
5365 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5369 Type *DestTy = nullptr;
5370 if (ParseTypeAndValue(Op, Loc, PFS) ||
5371 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5375 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5376 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5377 return Error(Loc, "invalid cast opcode for cast from '" +
5378 getTypeString(Op->getType()) + "' to '" +
5379 getTypeString(DestTy) + "'");
5381 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5386 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5387 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5389 Value *Op0, *Op1, *Op2;
5390 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5391 ParseToken(lltok::comma, "expected ',' after select condition") ||
5392 ParseTypeAndValue(Op1, PFS) ||
5393 ParseToken(lltok::comma, "expected ',' after select value") ||
5394 ParseTypeAndValue(Op2, PFS))
5397 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5398 return Error(Loc, Reason);
5400 Inst = SelectInst::Create(Op0, Op1, Op2);
5405 /// ::= 'va_arg' TypeAndValue ',' Type
5406 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5408 Type *EltTy = nullptr;
5410 if (ParseTypeAndValue(Op, PFS) ||
5411 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5412 ParseType(EltTy, TypeLoc))
5415 if (!EltTy->isFirstClassType())
5416 return Error(TypeLoc, "va_arg requires operand with first class type");
5418 Inst = new VAArgInst(Op, EltTy);
5422 /// ParseExtractElement
5423 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5424 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5427 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5428 ParseToken(lltok::comma, "expected ',' after extract value") ||
5429 ParseTypeAndValue(Op1, PFS))
5432 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5433 return Error(Loc, "invalid extractelement operands");
5435 Inst = ExtractElementInst::Create(Op0, Op1);
5439 /// ParseInsertElement
5440 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5441 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5443 Value *Op0, *Op1, *Op2;
5444 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5445 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5446 ParseTypeAndValue(Op1, PFS) ||
5447 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5448 ParseTypeAndValue(Op2, PFS))
5451 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5452 return Error(Loc, "invalid insertelement operands");
5454 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5458 /// ParseShuffleVector
5459 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5460 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5462 Value *Op0, *Op1, *Op2;
5463 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5464 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5465 ParseTypeAndValue(Op1, PFS) ||
5466 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5467 ParseTypeAndValue(Op2, PFS))
5470 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5471 return Error(Loc, "invalid shufflevector operands");
5473 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5478 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5479 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5480 Type *Ty = nullptr; LocTy TypeLoc;
5483 if (ParseType(Ty, TypeLoc) ||
5484 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5485 ParseValue(Ty, Op0, PFS) ||
5486 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5487 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5488 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5491 bool AteExtraComma = false;
5492 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5494 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5496 if (!EatIfPresent(lltok::comma))
5499 if (Lex.getKind() == lltok::MetadataVar) {
5500 AteExtraComma = true;
5504 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5505 ParseValue(Ty, Op0, PFS) ||
5506 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5507 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5508 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5512 if (!Ty->isFirstClassType())
5513 return Error(TypeLoc, "phi node must have first class type");
5515 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5516 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5517 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5519 return AteExtraComma ? InstExtraComma : InstNormal;
5523 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5525 /// ::= 'catch' TypeAndValue
5527 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5528 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5529 Type *Ty = nullptr; LocTy TyLoc;
5531 if (ParseType(Ty, TyLoc))
5534 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5535 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5537 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5538 LandingPadInst::ClauseType CT;
5539 if (EatIfPresent(lltok::kw_catch))
5540 CT = LandingPadInst::Catch;
5541 else if (EatIfPresent(lltok::kw_filter))
5542 CT = LandingPadInst::Filter;
5544 return TokError("expected 'catch' or 'filter' clause type");
5548 if (ParseTypeAndValue(V, VLoc, PFS))
5551 // A 'catch' type expects a non-array constant. A filter clause expects an
5553 if (CT == LandingPadInst::Catch) {
5554 if (isa<ArrayType>(V->getType()))
5555 Error(VLoc, "'catch' clause has an invalid type");
5557 if (!isa<ArrayType>(V->getType()))
5558 Error(VLoc, "'filter' clause has an invalid type");
5561 Constant *CV = dyn_cast<Constant>(V);
5563 return Error(VLoc, "clause argument must be a constant");
5567 Inst = LP.release();
5572 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5573 /// ParameterList OptionalAttrs
5574 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5575 /// ParameterList OptionalAttrs
5576 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5577 /// ParameterList OptionalAttrs
5578 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5579 CallInst::TailCallKind TCK) {
5580 AttrBuilder RetAttrs, FnAttrs;
5581 std::vector<unsigned> FwdRefAttrGrps;
5584 Type *RetType = nullptr;
5587 SmallVector<ParamInfo, 16> ArgList;
5588 LocTy CallLoc = Lex.getLoc();
5590 if ((TCK != CallInst::TCK_None &&
5591 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5592 ParseOptionalCallingConv(CC) ||
5593 ParseOptionalReturnAttrs(RetAttrs) ||
5594 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5595 ParseValID(CalleeID) ||
5596 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5597 PFS.getFunction().isVarArg()) ||
5598 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5602 // If RetType is a non-function pointer type, then this is the short syntax
5603 // for the call, which means that RetType is just the return type. Infer the
5604 // rest of the function argument types from the arguments that are present.
5605 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5607 // Pull out the types of all of the arguments...
5608 std::vector<Type*> ParamTypes;
5609 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5610 ParamTypes.push_back(ArgList[i].V->getType());
5612 if (!FunctionType::isValidReturnType(RetType))
5613 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5615 Ty = FunctionType::get(RetType, ParamTypes, false);
5620 // Look up the callee.
5622 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5625 // Set up the Attribute for the function.
5626 SmallVector<AttributeSet, 8> Attrs;
5627 if (RetAttrs.hasAttributes())
5628 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5629 AttributeSet::ReturnIndex,
5632 SmallVector<Value*, 8> Args;
5634 // Loop through FunctionType's arguments and ensure they are specified
5635 // correctly. Also, gather any parameter attributes.
5636 FunctionType::param_iterator I = Ty->param_begin();
5637 FunctionType::param_iterator E = Ty->param_end();
5638 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5639 Type *ExpectedTy = nullptr;
5642 } else if (!Ty->isVarArg()) {
5643 return Error(ArgList[i].Loc, "too many arguments specified");
5646 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5647 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5648 getTypeString(ExpectedTy) + "'");
5649 Args.push_back(ArgList[i].V);
5650 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5651 AttrBuilder B(ArgList[i].Attrs, i + 1);
5652 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5657 return Error(CallLoc, "not enough parameters specified for call");
5659 if (FnAttrs.hasAttributes()) {
5660 if (FnAttrs.hasAlignmentAttr())
5661 return Error(CallLoc, "call instructions may not have an alignment");
5663 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5664 AttributeSet::FunctionIndex,
5668 // Finish off the Attribute and check them
5669 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5671 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5672 CI->setTailCallKind(TCK);
5673 CI->setCallingConv(CC);
5674 CI->setAttributes(PAL);
5675 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5680 //===----------------------------------------------------------------------===//
5681 // Memory Instructions.
5682 //===----------------------------------------------------------------------===//
5685 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5686 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5687 Value *Size = nullptr;
5688 LocTy SizeLoc, TyLoc;
5689 unsigned Alignment = 0;
5692 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5694 if (ParseType(Ty, TyLoc)) return true;
5696 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5697 return Error(TyLoc, "invalid type for alloca");
5699 bool AteExtraComma = false;
5700 if (EatIfPresent(lltok::comma)) {
5701 if (Lex.getKind() == lltok::kw_align) {
5702 if (ParseOptionalAlignment(Alignment)) return true;
5703 } else if (Lex.getKind() == lltok::MetadataVar) {
5704 AteExtraComma = true;
5706 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5707 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5712 if (Size && !Size->getType()->isIntegerTy())
5713 return Error(SizeLoc, "element count must have integer type");
5715 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5716 AI->setUsedWithInAlloca(IsInAlloca);
5718 return AteExtraComma ? InstExtraComma : InstNormal;
5722 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5723 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5724 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5725 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5726 Value *Val; LocTy Loc;
5727 unsigned Alignment = 0;
5728 bool AteExtraComma = false;
5729 bool isAtomic = false;
5730 AtomicOrdering Ordering = NotAtomic;
5731 SynchronizationScope Scope = CrossThread;
5733 if (Lex.getKind() == lltok::kw_atomic) {
5738 bool isVolatile = false;
5739 if (Lex.getKind() == lltok::kw_volatile) {
5745 LocTy ExplicitTypeLoc = Lex.getLoc();
5746 if (ParseType(Ty) ||
5747 ParseToken(lltok::comma, "expected comma after load's type") ||
5748 ParseTypeAndValue(Val, Loc, PFS) ||
5749 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5750 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5753 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5754 return Error(Loc, "load operand must be a pointer to a first class type");
5755 if (isAtomic && !Alignment)
5756 return Error(Loc, "atomic load must have explicit non-zero alignment");
5757 if (Ordering == Release || Ordering == AcquireRelease)
5758 return Error(Loc, "atomic load cannot use Release ordering");
5760 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5761 return Error(ExplicitTypeLoc,
5762 "explicit pointee type doesn't match operand's pointee type");
5764 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5765 return AteExtraComma ? InstExtraComma : InstNormal;
5770 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5771 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5772 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5773 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5774 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5775 unsigned Alignment = 0;
5776 bool AteExtraComma = false;
5777 bool isAtomic = false;
5778 AtomicOrdering Ordering = NotAtomic;
5779 SynchronizationScope Scope = CrossThread;
5781 if (Lex.getKind() == lltok::kw_atomic) {
5786 bool isVolatile = false;
5787 if (Lex.getKind() == lltok::kw_volatile) {
5792 if (ParseTypeAndValue(Val, Loc, PFS) ||
5793 ParseToken(lltok::comma, "expected ',' after store operand") ||
5794 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5795 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5796 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5799 if (!Ptr->getType()->isPointerTy())
5800 return Error(PtrLoc, "store operand must be a pointer");
5801 if (!Val->getType()->isFirstClassType())
5802 return Error(Loc, "store operand must be a first class value");
5803 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5804 return Error(Loc, "stored value and pointer type do not match");
5805 if (isAtomic && !Alignment)
5806 return Error(Loc, "atomic store must have explicit non-zero alignment");
5807 if (Ordering == Acquire || Ordering == AcquireRelease)
5808 return Error(Loc, "atomic store cannot use Acquire ordering");
5810 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5811 return AteExtraComma ? InstExtraComma : InstNormal;
5815 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5816 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5817 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5818 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5819 bool AteExtraComma = false;
5820 AtomicOrdering SuccessOrdering = NotAtomic;
5821 AtomicOrdering FailureOrdering = NotAtomic;
5822 SynchronizationScope Scope = CrossThread;
5823 bool isVolatile = false;
5824 bool isWeak = false;
5826 if (EatIfPresent(lltok::kw_weak))
5829 if (EatIfPresent(lltok::kw_volatile))
5832 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5833 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5834 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5835 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5836 ParseTypeAndValue(New, NewLoc, PFS) ||
5837 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5838 ParseOrdering(FailureOrdering))
5841 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5842 return TokError("cmpxchg cannot be unordered");
5843 if (SuccessOrdering < FailureOrdering)
5844 return TokError("cmpxchg must be at least as ordered on success as failure");
5845 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5846 return TokError("cmpxchg failure ordering cannot include release semantics");
5847 if (!Ptr->getType()->isPointerTy())
5848 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5849 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5850 return Error(CmpLoc, "compare value and pointer type do not match");
5851 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5852 return Error(NewLoc, "new value and pointer type do not match");
5853 if (!New->getType()->isIntegerTy())
5854 return Error(NewLoc, "cmpxchg operand must be an integer");
5855 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5856 if (Size < 8 || (Size & (Size - 1)))
5857 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5860 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5861 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5862 CXI->setVolatile(isVolatile);
5863 CXI->setWeak(isWeak);
5865 return AteExtraComma ? InstExtraComma : InstNormal;
5869 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5870 /// 'singlethread'? AtomicOrdering
5871 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5872 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5873 bool AteExtraComma = false;
5874 AtomicOrdering Ordering = NotAtomic;
5875 SynchronizationScope Scope = CrossThread;
5876 bool isVolatile = false;
5877 AtomicRMWInst::BinOp Operation;
5879 if (EatIfPresent(lltok::kw_volatile))
5882 switch (Lex.getKind()) {
5883 default: return TokError("expected binary operation in atomicrmw");
5884 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5885 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5886 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5887 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5888 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5889 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5890 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5891 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5892 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5893 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5894 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5896 Lex.Lex(); // Eat the operation.
5898 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5899 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5900 ParseTypeAndValue(Val, ValLoc, PFS) ||
5901 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5904 if (Ordering == Unordered)
5905 return TokError("atomicrmw cannot be unordered");
5906 if (!Ptr->getType()->isPointerTy())
5907 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5908 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5909 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5910 if (!Val->getType()->isIntegerTy())
5911 return Error(ValLoc, "atomicrmw operand must be an integer");
5912 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5913 if (Size < 8 || (Size & (Size - 1)))
5914 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5917 AtomicRMWInst *RMWI =
5918 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5919 RMWI->setVolatile(isVolatile);
5921 return AteExtraComma ? InstExtraComma : InstNormal;
5925 /// ::= 'fence' 'singlethread'? AtomicOrdering
5926 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5927 AtomicOrdering Ordering = NotAtomic;
5928 SynchronizationScope Scope = CrossThread;
5929 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5932 if (Ordering == Unordered)
5933 return TokError("fence cannot be unordered");
5934 if (Ordering == Monotonic)
5935 return TokError("fence cannot be monotonic");
5937 Inst = new FenceInst(Context, Ordering, Scope);
5941 /// ParseGetElementPtr
5942 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5943 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5944 Value *Ptr = nullptr;
5945 Value *Val = nullptr;
5948 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5951 LocTy ExplicitTypeLoc = Lex.getLoc();
5952 if (ParseType(Ty) ||
5953 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5954 ParseTypeAndValue(Ptr, Loc, PFS))
5957 Type *BaseType = Ptr->getType();
5958 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5959 if (!BasePointerType)
5960 return Error(Loc, "base of getelementptr must be a pointer");
5962 if (Ty != BasePointerType->getElementType())
5963 return Error(ExplicitTypeLoc,
5964 "explicit pointee type doesn't match operand's pointee type");
5966 SmallVector<Value*, 16> Indices;
5967 bool AteExtraComma = false;
5968 // GEP returns a vector of pointers if at least one of parameters is a vector.
5969 // All vector parameters should have the same vector width.
5970 unsigned GEPWidth = BaseType->isVectorTy() ?
5971 BaseType->getVectorNumElements() : 0;
5973 while (EatIfPresent(lltok::comma)) {
5974 if (Lex.getKind() == lltok::MetadataVar) {
5975 AteExtraComma = true;
5978 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5979 if (!Val->getType()->getScalarType()->isIntegerTy())
5980 return Error(EltLoc, "getelementptr index must be an integer");
5982 if (Val->getType()->isVectorTy()) {
5983 unsigned ValNumEl = Val->getType()->getVectorNumElements();
5984 if (GEPWidth && GEPWidth != ValNumEl)
5985 return Error(EltLoc,
5986 "getelementptr vector index has a wrong number of elements");
5987 GEPWidth = ValNumEl;
5989 Indices.push_back(Val);
5992 SmallPtrSet<Type*, 4> Visited;
5993 if (!Indices.empty() && !Ty->isSized(&Visited))
5994 return Error(Loc, "base element of getelementptr must be sized");
5996 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5997 return Error(Loc, "invalid getelementptr indices");
5998 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6000 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6001 return AteExtraComma ? InstExtraComma : InstNormal;
6004 /// ParseExtractValue
6005 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6006 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6007 Value *Val; LocTy Loc;
6008 SmallVector<unsigned, 4> Indices;
6010 if (ParseTypeAndValue(Val, Loc, PFS) ||
6011 ParseIndexList(Indices, AteExtraComma))
6014 if (!Val->getType()->isAggregateType())
6015 return Error(Loc, "extractvalue operand must be aggregate type");
6017 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6018 return Error(Loc, "invalid indices for extractvalue");
6019 Inst = ExtractValueInst::Create(Val, Indices);
6020 return AteExtraComma ? InstExtraComma : InstNormal;
6023 /// ParseInsertValue
6024 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6025 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6026 Value *Val0, *Val1; LocTy Loc0, Loc1;
6027 SmallVector<unsigned, 4> Indices;
6029 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6030 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6031 ParseTypeAndValue(Val1, Loc1, PFS) ||
6032 ParseIndexList(Indices, AteExtraComma))
6035 if (!Val0->getType()->isAggregateType())
6036 return Error(Loc0, "insertvalue operand must be aggregate type");
6038 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6040 return Error(Loc0, "invalid indices for insertvalue");
6041 if (IndexedType != Val1->getType())
6042 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6043 getTypeString(Val1->getType()) + "' instead of '" +
6044 getTypeString(IndexedType) + "'");
6045 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6046 return AteExtraComma ? InstExtraComma : InstNormal;
6049 //===----------------------------------------------------------------------===//
6050 // Embedded metadata.
6051 //===----------------------------------------------------------------------===//
6053 /// ParseMDNodeVector
6054 /// ::= { Element (',' Element)* }
6056 /// ::= 'null' | TypeAndValue
6057 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6058 if (ParseToken(lltok::lbrace, "expected '{' here"))
6061 // Check for an empty list.
6062 if (EatIfPresent(lltok::rbrace))
6066 // Null is a special case since it is typeless.
6067 if (EatIfPresent(lltok::kw_null)) {
6068 Elts.push_back(nullptr);
6073 if (ParseMetadata(MD, nullptr))
6076 } while (EatIfPresent(lltok::comma));
6078 return ParseToken(lltok::rbrace, "expected end of metadata node");
6081 //===----------------------------------------------------------------------===//
6082 // Use-list order directives.
6083 //===----------------------------------------------------------------------===//
6084 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6087 return Error(Loc, "value has no uses");
6089 unsigned NumUses = 0;
6090 SmallDenseMap<const Use *, unsigned, 16> Order;
6091 for (const Use &U : V->uses()) {
6092 if (++NumUses > Indexes.size())
6094 Order[&U] = Indexes[NumUses - 1];
6097 return Error(Loc, "value only has one use");
6098 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6099 return Error(Loc, "wrong number of indexes, expected " +
6100 Twine(std::distance(V->use_begin(), V->use_end())));
6102 V->sortUseList([&](const Use &L, const Use &R) {
6103 return Order.lookup(&L) < Order.lookup(&R);
6108 /// ParseUseListOrderIndexes
6109 /// ::= '{' uint32 (',' uint32)+ '}'
6110 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6111 SMLoc Loc = Lex.getLoc();
6112 if (ParseToken(lltok::lbrace, "expected '{' here"))
6114 if (Lex.getKind() == lltok::rbrace)
6115 return Lex.Error("expected non-empty list of uselistorder indexes");
6117 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6118 // indexes should be distinct numbers in the range [0, size-1], and should
6120 unsigned Offset = 0;
6122 bool IsOrdered = true;
6123 assert(Indexes.empty() && "Expected empty order vector");
6126 if (ParseUInt32(Index))
6129 // Update consistency checks.
6130 Offset += Index - Indexes.size();
6131 Max = std::max(Max, Index);
6132 IsOrdered &= Index == Indexes.size();
6134 Indexes.push_back(Index);
6135 } while (EatIfPresent(lltok::comma));
6137 if (ParseToken(lltok::rbrace, "expected '}' here"))
6140 if (Indexes.size() < 2)
6141 return Error(Loc, "expected >= 2 uselistorder indexes");
6142 if (Offset != 0 || Max >= Indexes.size())
6143 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6145 return Error(Loc, "expected uselistorder indexes to change the order");
6150 /// ParseUseListOrder
6151 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6152 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6153 SMLoc Loc = Lex.getLoc();
6154 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6158 SmallVector<unsigned, 16> Indexes;
6159 if (ParseTypeAndValue(V, PFS) ||
6160 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6161 ParseUseListOrderIndexes(Indexes))
6164 return sortUseListOrder(V, Indexes, Loc);
6167 /// ParseUseListOrderBB
6168 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6169 bool LLParser::ParseUseListOrderBB() {
6170 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6171 SMLoc Loc = Lex.getLoc();
6175 SmallVector<unsigned, 16> Indexes;
6176 if (ParseValID(Fn) ||
6177 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6178 ParseValID(Label) ||
6179 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6180 ParseUseListOrderIndexes(Indexes))
6183 // Check the function.
6185 if (Fn.Kind == ValID::t_GlobalName)
6186 GV = M->getNamedValue(Fn.StrVal);
6187 else if (Fn.Kind == ValID::t_GlobalID)
6188 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6190 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6192 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6193 auto *F = dyn_cast<Function>(GV);
6195 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6196 if (F->isDeclaration())
6197 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6199 // Check the basic block.
6200 if (Label.Kind == ValID::t_LocalID)
6201 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6202 if (Label.Kind != ValID::t_LocalName)
6203 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6204 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6206 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6207 if (!isa<BasicBlock>(V))
6208 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6210 return sortUseListOrder(V, Indexes, Loc);