1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/AsmParser/SlotMapping.h"
18 #include "llvm/IR/AutoUpgrade.h"
19 #include "llvm/IR/CallingConv.h"
20 #include "llvm/IR/Constants.h"
21 #include "llvm/IR/DebugInfo.h"
22 #include "llvm/IR/DebugInfoMetadata.h"
23 #include "llvm/IR/DerivedTypes.h"
24 #include "llvm/IR/InlineAsm.h"
25 #include "llvm/IR/Instructions.h"
26 #include "llvm/IR/LLVMContext.h"
27 #include "llvm/IR/Module.h"
28 #include "llvm/IR/Operator.h"
29 #include "llvm/IR/ValueSymbolTable.h"
30 #include "llvm/Support/Dwarf.h"
31 #include "llvm/Support/ErrorHandling.h"
32 #include "llvm/Support/SaveAndRestore.h"
33 #include "llvm/Support/raw_ostream.h"
36 static std::string getTypeString(Type *T) {
38 raw_string_ostream Tmp(Result);
43 /// Run: module ::= toplevelentity*
44 bool LLParser::Run() {
48 return ParseTopLevelEntities() ||
49 ValidateEndOfModule();
52 bool LLParser::parseStandaloneConstantValue(Constant *&C,
53 const SlotMapping *Slots) {
54 restoreParsingState(Slots);
58 if (ParseType(Ty) || parseConstantValue(Ty, C))
60 if (Lex.getKind() != lltok::Eof)
61 return Error(Lex.getLoc(), "expected end of string");
65 void LLParser::restoreParsingState(const SlotMapping *Slots) {
68 NumberedVals = Slots->GlobalValues;
69 NumberedMetadata = Slots->MetadataNodes;
70 for (const auto &I : Slots->NamedTypes)
72 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
73 for (const auto &I : Slots->Types)
75 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
78 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
80 bool LLParser::ValidateEndOfModule() {
81 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
82 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
84 // Handle any function attribute group forward references.
85 for (std::map<Value*, std::vector<unsigned> >::iterator
86 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
89 std::vector<unsigned> &Vec = I->second;
92 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
94 B.merge(NumberedAttrBuilders[*VI]);
96 if (Function *Fn = dyn_cast<Function>(V)) {
97 AttributeSet AS = Fn->getAttributes();
98 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
99 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
100 AS.getFnAttributes());
104 // If the alignment was parsed as an attribute, move to the alignment
106 if (FnAttrs.hasAlignmentAttr()) {
107 Fn->setAlignment(FnAttrs.getAlignment());
108 FnAttrs.removeAttribute(Attribute::Alignment);
111 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
112 AttributeSet::get(Context,
113 AttributeSet::FunctionIndex,
115 Fn->setAttributes(AS);
116 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
117 AttributeSet AS = CI->getAttributes();
118 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
119 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
120 AS.getFnAttributes());
122 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
123 AttributeSet::get(Context,
124 AttributeSet::FunctionIndex,
126 CI->setAttributes(AS);
127 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
128 AttributeSet AS = II->getAttributes();
129 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
130 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
131 AS.getFnAttributes());
133 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
134 AttributeSet::get(Context,
135 AttributeSet::FunctionIndex,
137 II->setAttributes(AS);
139 llvm_unreachable("invalid object with forward attribute group reference");
143 // If there are entries in ForwardRefBlockAddresses at this point, the
144 // function was never defined.
145 if (!ForwardRefBlockAddresses.empty())
146 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
147 "expected function name in blockaddress");
149 for (const auto &NT : NumberedTypes)
150 if (NT.second.second.isValid())
151 return Error(NT.second.second,
152 "use of undefined type '%" + Twine(NT.first) + "'");
154 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
155 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
156 if (I->second.second.isValid())
157 return Error(I->second.second,
158 "use of undefined type named '" + I->getKey() + "'");
160 if (!ForwardRefComdats.empty())
161 return Error(ForwardRefComdats.begin()->second,
162 "use of undefined comdat '$" +
163 ForwardRefComdats.begin()->first + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
180 // Resolve metadata cycles.
181 for (auto &N : NumberedMetadata) {
182 if (N.second && !N.second->isResolved())
183 N.second->resolveCycles();
186 // Look for intrinsic functions and CallInst that need to be upgraded
187 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
188 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
190 UpgradeDebugInfo(*M);
194 // Initialize the slot mapping.
195 // Because by this point we've parsed and validated everything, we can "steal"
196 // the mapping from LLParser as it doesn't need it anymore.
197 Slots->GlobalValues = std::move(NumberedVals);
198 Slots->MetadataNodes = std::move(NumberedMetadata);
199 for (const auto &I : NamedTypes)
200 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
201 for (const auto &I : NumberedTypes)
202 Slots->Types.insert(std::make_pair(I.first, I.second.first));
207 //===----------------------------------------------------------------------===//
208 // Top-Level Entities
209 //===----------------------------------------------------------------------===//
211 bool LLParser::ParseTopLevelEntities() {
213 switch (Lex.getKind()) {
214 default: return TokError("expected top-level entity");
215 case lltok::Eof: return false;
216 case lltok::kw_declare: if (ParseDeclare()) return true; break;
217 case lltok::kw_define: if (ParseDefine()) return true; break;
218 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
219 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
220 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
221 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
222 case lltok::LocalVar: if (ParseNamedType()) return true; break;
223 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
224 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
225 case lltok::ComdatVar: if (parseComdat()) return true; break;
226 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
227 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
229 // The Global variable production with no name can have many different
230 // optional leading prefixes, the production is:
231 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
232 // OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
233 // ('constant'|'global') ...
234 case lltok::kw_private: // OptionalLinkage
235 case lltok::kw_internal: // OptionalLinkage
236 case lltok::kw_weak: // OptionalLinkage
237 case lltok::kw_weak_odr: // OptionalLinkage
238 case lltok::kw_linkonce: // OptionalLinkage
239 case lltok::kw_linkonce_odr: // OptionalLinkage
240 case lltok::kw_appending: // OptionalLinkage
241 case lltok::kw_common: // OptionalLinkage
242 case lltok::kw_extern_weak: // OptionalLinkage
243 case lltok::kw_external: // OptionalLinkage
244 case lltok::kw_default: // OptionalVisibility
245 case lltok::kw_hidden: // OptionalVisibility
246 case lltok::kw_protected: // OptionalVisibility
247 case lltok::kw_dllimport: // OptionalDLLStorageClass
248 case lltok::kw_dllexport: // OptionalDLLStorageClass
249 case lltok::kw_thread_local: // OptionalThreadLocal
250 case lltok::kw_addrspace: // OptionalAddrSpace
251 case lltok::kw_constant: // GlobalType
252 case lltok::kw_global: { // GlobalType
253 unsigned Linkage, Visibility, DLLStorageClass;
255 GlobalVariable::ThreadLocalMode TLM;
257 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
258 ParseOptionalVisibility(Visibility) ||
259 ParseOptionalDLLStorageClass(DLLStorageClass) ||
260 ParseOptionalThreadLocal(TLM) ||
261 parseOptionalUnnamedAddr(UnnamedAddr) ||
262 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
263 DLLStorageClass, TLM, UnnamedAddr))
268 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
269 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
270 case lltok::kw_uselistorder_bb:
271 if (ParseUseListOrderBB()) return true; break;
278 /// ::= 'module' 'asm' STRINGCONSTANT
279 bool LLParser::ParseModuleAsm() {
280 assert(Lex.getKind() == lltok::kw_module);
284 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
285 ParseStringConstant(AsmStr)) return true;
287 M->appendModuleInlineAsm(AsmStr);
292 /// ::= 'target' 'triple' '=' STRINGCONSTANT
293 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
294 bool LLParser::ParseTargetDefinition() {
295 assert(Lex.getKind() == lltok::kw_target);
298 default: return TokError("unknown target property");
299 case lltok::kw_triple:
301 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
302 ParseStringConstant(Str))
304 M->setTargetTriple(Str);
306 case lltok::kw_datalayout:
308 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
309 ParseStringConstant(Str))
311 M->setDataLayout(Str);
317 /// ::= 'deplibs' '=' '[' ']'
318 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
319 /// FIXME: Remove in 4.0. Currently parse, but ignore.
320 bool LLParser::ParseDepLibs() {
321 assert(Lex.getKind() == lltok::kw_deplibs);
323 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
324 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
327 if (EatIfPresent(lltok::rsquare))
332 if (ParseStringConstant(Str)) return true;
333 } while (EatIfPresent(lltok::comma));
335 return ParseToken(lltok::rsquare, "expected ']' at end of list");
338 /// ParseUnnamedType:
339 /// ::= LocalVarID '=' 'type' type
340 bool LLParser::ParseUnnamedType() {
341 LocTy TypeLoc = Lex.getLoc();
342 unsigned TypeID = Lex.getUIntVal();
343 Lex.Lex(); // eat LocalVarID;
345 if (ParseToken(lltok::equal, "expected '=' after name") ||
346 ParseToken(lltok::kw_type, "expected 'type' after '='"))
349 Type *Result = nullptr;
350 if (ParseStructDefinition(TypeLoc, "",
351 NumberedTypes[TypeID], Result)) return true;
353 if (!isa<StructType>(Result)) {
354 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
356 return Error(TypeLoc, "non-struct types may not be recursive");
357 Entry.first = Result;
358 Entry.second = SMLoc();
366 /// ::= LocalVar '=' 'type' type
367 bool LLParser::ParseNamedType() {
368 std::string Name = Lex.getStrVal();
369 LocTy NameLoc = Lex.getLoc();
370 Lex.Lex(); // eat LocalVar.
372 if (ParseToken(lltok::equal, "expected '=' after name") ||
373 ParseToken(lltok::kw_type, "expected 'type' after name"))
376 Type *Result = nullptr;
377 if (ParseStructDefinition(NameLoc, Name,
378 NamedTypes[Name], Result)) return true;
380 if (!isa<StructType>(Result)) {
381 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
383 return Error(NameLoc, "non-struct types may not be recursive");
384 Entry.first = Result;
385 Entry.second = SMLoc();
393 /// ::= 'declare' FunctionHeader
394 bool LLParser::ParseDeclare() {
395 assert(Lex.getKind() == lltok::kw_declare);
399 return ParseFunctionHeader(F, false);
403 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
404 bool LLParser::ParseDefine() {
405 assert(Lex.getKind() == lltok::kw_define);
409 return ParseFunctionHeader(F, true) ||
410 ParseOptionalFunctionMetadata(*F) ||
411 ParseFunctionBody(*F);
417 bool LLParser::ParseGlobalType(bool &IsConstant) {
418 if (Lex.getKind() == lltok::kw_constant)
420 else if (Lex.getKind() == lltok::kw_global)
424 return TokError("expected 'global' or 'constant'");
430 /// ParseUnnamedGlobal:
431 /// OptionalVisibility ALIAS ...
432 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
433 /// ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
436 /// ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility, DLLStorageClass;
455 GlobalVariable::ThreadLocalMode TLM;
457 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
458 ParseOptionalVisibility(Visibility) ||
459 ParseOptionalDLLStorageClass(DLLStorageClass) ||
460 ParseOptionalThreadLocal(TLM) ||
461 parseOptionalUnnamedAddr(UnnamedAddr))
464 if (Lex.getKind() != lltok::kw_alias)
465 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
466 DLLStorageClass, TLM, UnnamedAddr);
467 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
471 /// ParseNamedGlobal:
472 /// GlobalVar '=' OptionalVisibility ALIAS ...
473 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
474 /// ... -> global variable
475 bool LLParser::ParseNamedGlobal() {
476 assert(Lex.getKind() == lltok::GlobalVar);
477 LocTy NameLoc = Lex.getLoc();
478 std::string Name = Lex.getStrVal();
482 unsigned Linkage, Visibility, DLLStorageClass;
483 GlobalVariable::ThreadLocalMode TLM;
485 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
486 ParseOptionalLinkage(Linkage, HasLinkage) ||
487 ParseOptionalVisibility(Visibility) ||
488 ParseOptionalDLLStorageClass(DLLStorageClass) ||
489 ParseOptionalThreadLocal(TLM) ||
490 parseOptionalUnnamedAddr(UnnamedAddr))
493 if (Lex.getKind() != lltok::kw_alias)
494 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
495 DLLStorageClass, TLM, UnnamedAddr);
497 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
501 bool LLParser::parseComdat() {
502 assert(Lex.getKind() == lltok::ComdatVar);
503 std::string Name = Lex.getStrVal();
504 LocTy NameLoc = Lex.getLoc();
507 if (ParseToken(lltok::equal, "expected '=' here"))
510 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
511 return TokError("expected comdat type");
513 Comdat::SelectionKind SK;
514 switch (Lex.getKind()) {
516 return TokError("unknown selection kind");
520 case lltok::kw_exactmatch:
521 SK = Comdat::ExactMatch;
523 case lltok::kw_largest:
524 SK = Comdat::Largest;
526 case lltok::kw_noduplicates:
527 SK = Comdat::NoDuplicates;
529 case lltok::kw_samesize:
530 SK = Comdat::SameSize;
535 // See if the comdat was forward referenced, if so, use the comdat.
536 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
537 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
538 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
539 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
542 if (I != ComdatSymTab.end())
545 C = M->getOrInsertComdat(Name);
546 C->setSelectionKind(SK);
552 // ::= '!' STRINGCONSTANT
553 bool LLParser::ParseMDString(MDString *&Result) {
555 if (ParseStringConstant(Str)) return true;
556 llvm::UpgradeMDStringConstant(Str);
557 Result = MDString::get(Context, Str);
562 // ::= '!' MDNodeNumber
563 bool LLParser::ParseMDNodeID(MDNode *&Result) {
564 // !{ ..., !42, ... }
566 if (ParseUInt32(MID))
569 // If not a forward reference, just return it now.
570 if (NumberedMetadata.count(MID)) {
571 Result = NumberedMetadata[MID];
575 // Otherwise, create MDNode forward reference.
576 auto &FwdRef = ForwardRefMDNodes[MID];
577 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
579 Result = FwdRef.first.get();
580 NumberedMetadata[MID].reset(Result);
584 /// ParseNamedMetadata:
585 /// !foo = !{ !1, !2 }
586 bool LLParser::ParseNamedMetadata() {
587 assert(Lex.getKind() == lltok::MetadataVar);
588 std::string Name = Lex.getStrVal();
591 if (ParseToken(lltok::equal, "expected '=' here") ||
592 ParseToken(lltok::exclaim, "Expected '!' here") ||
593 ParseToken(lltok::lbrace, "Expected '{' here"))
596 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
597 if (Lex.getKind() != lltok::rbrace)
599 if (ParseToken(lltok::exclaim, "Expected '!' here"))
603 if (ParseMDNodeID(N)) return true;
605 } while (EatIfPresent(lltok::comma));
607 return ParseToken(lltok::rbrace, "expected end of metadata node");
610 /// ParseStandaloneMetadata:
612 bool LLParser::ParseStandaloneMetadata() {
613 assert(Lex.getKind() == lltok::exclaim);
615 unsigned MetadataID = 0;
618 if (ParseUInt32(MetadataID) ||
619 ParseToken(lltok::equal, "expected '=' here"))
622 // Detect common error, from old metadata syntax.
623 if (Lex.getKind() == lltok::Type)
624 return TokError("unexpected type in metadata definition");
626 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
627 if (Lex.getKind() == lltok::MetadataVar) {
628 if (ParseSpecializedMDNode(Init, IsDistinct))
630 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
631 ParseMDTuple(Init, IsDistinct))
634 // See if this was forward referenced, if so, handle it.
635 auto FI = ForwardRefMDNodes.find(MetadataID);
636 if (FI != ForwardRefMDNodes.end()) {
637 FI->second.first->replaceAllUsesWith(Init);
638 ForwardRefMDNodes.erase(FI);
640 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
642 if (NumberedMetadata.count(MetadataID))
643 return TokError("Metadata id is already used");
644 NumberedMetadata[MetadataID].reset(Init);
650 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
651 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
652 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
656 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
657 /// OptionalDLLStorageClass OptionalThreadLocal
658 /// OptionalUnnamedAddr 'alias' Aliasee
663 /// Everything through OptionalUnnamedAddr has already been parsed.
665 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
666 unsigned Visibility, unsigned DLLStorageClass,
667 GlobalVariable::ThreadLocalMode TLM,
669 assert(Lex.getKind() == lltok::kw_alias);
672 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
674 if(!GlobalAlias::isValidLinkage(Linkage))
675 return Error(NameLoc, "invalid linkage type for alias");
677 if (!isValidVisibilityForLinkage(Visibility, L))
678 return Error(NameLoc,
679 "symbol with local linkage must have default visibility");
682 LocTy ExplicitTypeLoc = Lex.getLoc();
684 ParseToken(lltok::comma, "expected comma after alias's type"))
688 LocTy AliaseeLoc = Lex.getLoc();
689 if (Lex.getKind() != lltok::kw_bitcast &&
690 Lex.getKind() != lltok::kw_getelementptr &&
691 Lex.getKind() != lltok::kw_addrspacecast &&
692 Lex.getKind() != lltok::kw_inttoptr) {
693 if (ParseGlobalTypeAndValue(Aliasee))
696 // The bitcast dest type is not present, it is implied by the dest type.
700 if (ID.Kind != ValID::t_Constant)
701 return Error(AliaseeLoc, "invalid aliasee");
702 Aliasee = ID.ConstantVal;
705 Type *AliaseeType = Aliasee->getType();
706 auto *PTy = dyn_cast<PointerType>(AliaseeType);
708 return Error(AliaseeLoc, "An alias must have pointer type");
709 unsigned AddrSpace = PTy->getAddressSpace();
711 if (Ty != PTy->getElementType())
714 "explicit pointee type doesn't match operand's pointee type");
716 // Okay, create the alias but do not insert it into the module yet.
717 std::unique_ptr<GlobalAlias> GA(
718 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
719 Name, Aliasee, /*Parent*/ nullptr));
720 GA->setThreadLocalMode(TLM);
721 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
722 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
723 GA->setUnnamedAddr(UnnamedAddr);
726 NumberedVals.push_back(GA.get());
728 // See if this value already exists in the symbol table. If so, it is either
729 // a redefinition or a definition of a forward reference.
730 if (GlobalValue *Val = M->getNamedValue(Name)) {
731 // See if this was a redefinition. If so, there is no entry in
733 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
734 I = ForwardRefVals.find(Name);
735 if (I == ForwardRefVals.end())
736 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
738 // Otherwise, this was a definition of forward ref. Verify that types
740 if (Val->getType() != GA->getType())
741 return Error(NameLoc,
742 "forward reference and definition of alias have different types");
744 // If they agree, just RAUW the old value with the alias and remove the
746 Val->replaceAllUsesWith(GA.get());
747 Val->eraseFromParent();
748 ForwardRefVals.erase(I);
751 // Insert into the module, we know its name won't collide now.
752 M->getAliasList().push_back(GA.get());
753 assert(GA->getName() == Name && "Should not be a name conflict!");
755 // The module owns this now
762 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
763 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
764 /// OptionalExternallyInitialized GlobalType Type Const
765 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
766 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
767 /// OptionalExternallyInitialized GlobalType Type Const
769 /// Everything up to and including OptionalUnnamedAddr has been parsed
772 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
773 unsigned Linkage, bool HasLinkage,
774 unsigned Visibility, unsigned DLLStorageClass,
775 GlobalVariable::ThreadLocalMode TLM,
777 if (!isValidVisibilityForLinkage(Visibility, Linkage))
778 return Error(NameLoc,
779 "symbol with local linkage must have default visibility");
782 bool IsConstant, IsExternallyInitialized;
783 LocTy IsExternallyInitializedLoc;
787 if (ParseOptionalAddrSpace(AddrSpace) ||
788 ParseOptionalToken(lltok::kw_externally_initialized,
789 IsExternallyInitialized,
790 &IsExternallyInitializedLoc) ||
791 ParseGlobalType(IsConstant) ||
792 ParseType(Ty, TyLoc))
795 // If the linkage is specified and is external, then no initializer is
797 Constant *Init = nullptr;
798 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
799 Linkage != GlobalValue::ExternalLinkage)) {
800 if (ParseGlobalValue(Ty, Init))
804 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
805 return Error(TyLoc, "invalid type for global variable");
807 GlobalValue *GVal = nullptr;
809 // See if the global was forward referenced, if so, use the global.
811 GVal = M->getNamedValue(Name);
813 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
814 return Error(NameLoc, "redefinition of global '@" + Name + "'");
817 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
818 I = ForwardRefValIDs.find(NumberedVals.size());
819 if (I != ForwardRefValIDs.end()) {
820 GVal = I->second.first;
821 ForwardRefValIDs.erase(I);
827 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
828 Name, nullptr, GlobalVariable::NotThreadLocal,
831 if (GVal->getValueType() != Ty)
833 "forward reference and definition of global have different types");
835 GV = cast<GlobalVariable>(GVal);
837 // Move the forward-reference to the correct spot in the module.
838 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
842 NumberedVals.push_back(GV);
844 // Set the parsed properties on the global.
846 GV->setInitializer(Init);
847 GV->setConstant(IsConstant);
848 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
849 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
850 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
851 GV->setExternallyInitialized(IsExternallyInitialized);
852 GV->setThreadLocalMode(TLM);
853 GV->setUnnamedAddr(UnnamedAddr);
855 // Parse attributes on the global.
856 while (Lex.getKind() == lltok::comma) {
859 if (Lex.getKind() == lltok::kw_section) {
861 GV->setSection(Lex.getStrVal());
862 if (ParseToken(lltok::StringConstant, "expected global section string"))
864 } else if (Lex.getKind() == lltok::kw_align) {
866 if (ParseOptionalAlignment(Alignment)) return true;
867 GV->setAlignment(Alignment);
870 if (parseOptionalComdat(Name, C))
875 return TokError("unknown global variable property!");
882 /// ParseUnnamedAttrGrp
883 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
884 bool LLParser::ParseUnnamedAttrGrp() {
885 assert(Lex.getKind() == lltok::kw_attributes);
886 LocTy AttrGrpLoc = Lex.getLoc();
889 if (Lex.getKind() != lltok::AttrGrpID)
890 return TokError("expected attribute group id");
892 unsigned VarID = Lex.getUIntVal();
893 std::vector<unsigned> unused;
897 if (ParseToken(lltok::equal, "expected '=' here") ||
898 ParseToken(lltok::lbrace, "expected '{' here") ||
899 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
901 ParseToken(lltok::rbrace, "expected end of attribute group"))
904 if (!NumberedAttrBuilders[VarID].hasAttributes())
905 return Error(AttrGrpLoc, "attribute group has no attributes");
910 /// ParseFnAttributeValuePairs
911 /// ::= <attr> | <attr> '=' <value>
912 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
913 std::vector<unsigned> &FwdRefAttrGrps,
914 bool inAttrGrp, LocTy &BuiltinLoc) {
915 bool HaveError = false;
920 lltok::Kind Token = Lex.getKind();
921 if (Token == lltok::kw_builtin)
922 BuiltinLoc = Lex.getLoc();
925 if (!inAttrGrp) return HaveError;
926 return Error(Lex.getLoc(), "unterminated attribute group");
931 case lltok::AttrGrpID: {
932 // Allow a function to reference an attribute group:
934 // define void @foo() #1 { ... }
938 "cannot have an attribute group reference in an attribute group");
940 unsigned AttrGrpNum = Lex.getUIntVal();
941 if (inAttrGrp) break;
943 // Save the reference to the attribute group. We'll fill it in later.
944 FwdRefAttrGrps.push_back(AttrGrpNum);
947 // Target-dependent attributes:
948 case lltok::StringConstant: {
949 if (ParseStringAttribute(B))
954 // Target-independent attributes:
955 case lltok::kw_align: {
956 // As a hack, we allow function alignment to be initially parsed as an
957 // attribute on a function declaration/definition or added to an attribute
958 // group and later moved to the alignment field.
962 if (ParseToken(lltok::equal, "expected '=' here") ||
963 ParseUInt32(Alignment))
966 if (ParseOptionalAlignment(Alignment))
969 B.addAlignmentAttr(Alignment);
972 case lltok::kw_alignstack: {
976 if (ParseToken(lltok::equal, "expected '=' here") ||
977 ParseUInt32(Alignment))
980 if (ParseOptionalStackAlignment(Alignment))
983 B.addStackAlignmentAttr(Alignment);
986 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
987 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
988 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
989 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
990 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
991 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
992 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
993 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
994 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
995 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
996 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
997 case lltok::kw_noimplicitfloat:
998 B.addAttribute(Attribute::NoImplicitFloat); break;
999 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1000 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1001 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1002 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1003 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1004 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1005 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1006 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1007 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1008 case lltok::kw_returns_twice:
1009 B.addAttribute(Attribute::ReturnsTwice); break;
1010 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1011 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1012 case lltok::kw_sspstrong:
1013 B.addAttribute(Attribute::StackProtectStrong); break;
1014 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1015 case lltok::kw_sanitize_address:
1016 B.addAttribute(Attribute::SanitizeAddress); break;
1017 case lltok::kw_sanitize_thread:
1018 B.addAttribute(Attribute::SanitizeThread); break;
1019 case lltok::kw_sanitize_memory:
1020 B.addAttribute(Attribute::SanitizeMemory); break;
1021 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1024 case lltok::kw_inreg:
1025 case lltok::kw_signext:
1026 case lltok::kw_zeroext:
1029 "invalid use of attribute on a function");
1031 case lltok::kw_byval:
1032 case lltok::kw_dereferenceable:
1033 case lltok::kw_dereferenceable_or_null:
1034 case lltok::kw_inalloca:
1035 case lltok::kw_nest:
1036 case lltok::kw_noalias:
1037 case lltok::kw_nocapture:
1038 case lltok::kw_nonnull:
1039 case lltok::kw_returned:
1040 case lltok::kw_sret:
1043 "invalid use of parameter-only attribute on a function");
1051 //===----------------------------------------------------------------------===//
1052 // GlobalValue Reference/Resolution Routines.
1053 //===----------------------------------------------------------------------===//
1055 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1056 const std::string &Name) {
1057 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1058 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1060 return new GlobalVariable(*M, PTy->getElementType(), false,
1061 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1062 nullptr, GlobalVariable::NotThreadLocal,
1063 PTy->getAddressSpace());
1066 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1067 /// forward reference record if needed. This can return null if the value
1068 /// exists but does not have the right type.
1069 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1071 PointerType *PTy = dyn_cast<PointerType>(Ty);
1073 Error(Loc, "global variable reference must have pointer type");
1077 // Look this name up in the normal function symbol table.
1079 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1081 // If this is a forward reference for the value, see if we already created a
1082 // forward ref record.
1084 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1085 I = ForwardRefVals.find(Name);
1086 if (I != ForwardRefVals.end())
1087 Val = I->second.first;
1090 // If we have the value in the symbol table or fwd-ref table, return it.
1092 if (Val->getType() == Ty) return Val;
1093 Error(Loc, "'@" + Name + "' defined with type '" +
1094 getTypeString(Val->getType()) + "'");
1098 // Otherwise, create a new forward reference for this value and remember it.
1099 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1100 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1104 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1105 PointerType *PTy = dyn_cast<PointerType>(Ty);
1107 Error(Loc, "global variable reference must have pointer type");
1111 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1113 // If this is a forward reference for the value, see if we already created a
1114 // forward ref record.
1116 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1117 I = ForwardRefValIDs.find(ID);
1118 if (I != ForwardRefValIDs.end())
1119 Val = I->second.first;
1122 // If we have the value in the symbol table or fwd-ref table, return it.
1124 if (Val->getType() == Ty) return Val;
1125 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1126 getTypeString(Val->getType()) + "'");
1130 // Otherwise, create a new forward reference for this value and remember it.
1131 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1132 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1137 //===----------------------------------------------------------------------===//
1138 // Comdat Reference/Resolution Routines.
1139 //===----------------------------------------------------------------------===//
1141 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1142 // Look this name up in the comdat symbol table.
1143 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1144 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1145 if (I != ComdatSymTab.end())
1148 // Otherwise, create a new forward reference for this value and remember it.
1149 Comdat *C = M->getOrInsertComdat(Name);
1150 ForwardRefComdats[Name] = Loc;
1155 //===----------------------------------------------------------------------===//
1157 //===----------------------------------------------------------------------===//
1159 /// ParseToken - If the current token has the specified kind, eat it and return
1160 /// success. Otherwise, emit the specified error and return failure.
1161 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1162 if (Lex.getKind() != T)
1163 return TokError(ErrMsg);
1168 /// ParseStringConstant
1169 /// ::= StringConstant
1170 bool LLParser::ParseStringConstant(std::string &Result) {
1171 if (Lex.getKind() != lltok::StringConstant)
1172 return TokError("expected string constant");
1173 Result = Lex.getStrVal();
1180 bool LLParser::ParseUInt32(unsigned &Val) {
1181 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1182 return TokError("expected integer");
1183 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1184 if (Val64 != unsigned(Val64))
1185 return TokError("expected 32-bit integer (too large)");
1193 bool LLParser::ParseUInt64(uint64_t &Val) {
1194 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1195 return TokError("expected integer");
1196 Val = Lex.getAPSIntVal().getLimitedValue();
1202 /// := 'localdynamic'
1203 /// := 'initialexec'
1205 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1206 switch (Lex.getKind()) {
1208 return TokError("expected localdynamic, initialexec or localexec");
1209 case lltok::kw_localdynamic:
1210 TLM = GlobalVariable::LocalDynamicTLSModel;
1212 case lltok::kw_initialexec:
1213 TLM = GlobalVariable::InitialExecTLSModel;
1215 case lltok::kw_localexec:
1216 TLM = GlobalVariable::LocalExecTLSModel;
1224 /// ParseOptionalThreadLocal
1226 /// := 'thread_local'
1227 /// := 'thread_local' '(' tlsmodel ')'
1228 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1229 TLM = GlobalVariable::NotThreadLocal;
1230 if (!EatIfPresent(lltok::kw_thread_local))
1233 TLM = GlobalVariable::GeneralDynamicTLSModel;
1234 if (Lex.getKind() == lltok::lparen) {
1236 return ParseTLSModel(TLM) ||
1237 ParseToken(lltok::rparen, "expected ')' after thread local model");
1242 /// ParseOptionalAddrSpace
1244 /// := 'addrspace' '(' uint32 ')'
1245 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1247 if (!EatIfPresent(lltok::kw_addrspace))
1249 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1250 ParseUInt32(AddrSpace) ||
1251 ParseToken(lltok::rparen, "expected ')' in address space");
1254 /// ParseStringAttribute
1255 /// := StringConstant
1256 /// := StringConstant '=' StringConstant
1257 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1258 std::string Attr = Lex.getStrVal();
1261 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1263 B.addAttribute(Attr, Val);
1267 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1268 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1269 bool HaveError = false;
1274 lltok::Kind Token = Lex.getKind();
1276 default: // End of attributes.
1278 case lltok::StringConstant: {
1279 if (ParseStringAttribute(B))
1283 case lltok::kw_align: {
1285 if (ParseOptionalAlignment(Alignment))
1287 B.addAlignmentAttr(Alignment);
1290 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1291 case lltok::kw_dereferenceable: {
1293 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1295 B.addDereferenceableAttr(Bytes);
1298 case lltok::kw_dereferenceable_or_null: {
1300 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1302 B.addDereferenceableOrNullAttr(Bytes);
1305 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1306 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1307 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1308 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1309 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1310 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1311 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1312 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1313 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1314 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1315 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1316 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1318 case lltok::kw_alignstack:
1319 case lltok::kw_alwaysinline:
1320 case lltok::kw_argmemonly:
1321 case lltok::kw_builtin:
1322 case lltok::kw_inlinehint:
1323 case lltok::kw_jumptable:
1324 case lltok::kw_minsize:
1325 case lltok::kw_naked:
1326 case lltok::kw_nobuiltin:
1327 case lltok::kw_noduplicate:
1328 case lltok::kw_noimplicitfloat:
1329 case lltok::kw_noinline:
1330 case lltok::kw_nonlazybind:
1331 case lltok::kw_noredzone:
1332 case lltok::kw_noreturn:
1333 case lltok::kw_nounwind:
1334 case lltok::kw_optnone:
1335 case lltok::kw_optsize:
1336 case lltok::kw_returns_twice:
1337 case lltok::kw_sanitize_address:
1338 case lltok::kw_sanitize_memory:
1339 case lltok::kw_sanitize_thread:
1341 case lltok::kw_sspreq:
1342 case lltok::kw_sspstrong:
1343 case lltok::kw_safestack:
1344 case lltok::kw_uwtable:
1345 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1353 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1354 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1355 bool HaveError = false;
1360 lltok::Kind Token = Lex.getKind();
1362 default: // End of attributes.
1364 case lltok::StringConstant: {
1365 if (ParseStringAttribute(B))
1369 case lltok::kw_dereferenceable: {
1371 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1373 B.addDereferenceableAttr(Bytes);
1376 case lltok::kw_dereferenceable_or_null: {
1378 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1380 B.addDereferenceableOrNullAttr(Bytes);
1383 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1384 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1385 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1386 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1387 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1390 case lltok::kw_align:
1391 case lltok::kw_byval:
1392 case lltok::kw_inalloca:
1393 case lltok::kw_nest:
1394 case lltok::kw_nocapture:
1395 case lltok::kw_returned:
1396 case lltok::kw_sret:
1397 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1400 case lltok::kw_alignstack:
1401 case lltok::kw_alwaysinline:
1402 case lltok::kw_argmemonly:
1403 case lltok::kw_builtin:
1404 case lltok::kw_cold:
1405 case lltok::kw_inlinehint:
1406 case lltok::kw_jumptable:
1407 case lltok::kw_minsize:
1408 case lltok::kw_naked:
1409 case lltok::kw_nobuiltin:
1410 case lltok::kw_noduplicate:
1411 case lltok::kw_noimplicitfloat:
1412 case lltok::kw_noinline:
1413 case lltok::kw_nonlazybind:
1414 case lltok::kw_noredzone:
1415 case lltok::kw_noreturn:
1416 case lltok::kw_nounwind:
1417 case lltok::kw_optnone:
1418 case lltok::kw_optsize:
1419 case lltok::kw_returns_twice:
1420 case lltok::kw_sanitize_address:
1421 case lltok::kw_sanitize_memory:
1422 case lltok::kw_sanitize_thread:
1424 case lltok::kw_sspreq:
1425 case lltok::kw_sspstrong:
1426 case lltok::kw_safestack:
1427 case lltok::kw_uwtable:
1428 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1431 case lltok::kw_readnone:
1432 case lltok::kw_readonly:
1433 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1440 /// ParseOptionalLinkage
1447 /// ::= 'linkonce_odr'
1448 /// ::= 'available_externally'
1451 /// ::= 'extern_weak'
1453 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1455 switch (Lex.getKind()) {
1456 default: Res=GlobalValue::ExternalLinkage; return false;
1457 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1458 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1459 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1460 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1461 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1462 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1463 case lltok::kw_available_externally:
1464 Res = GlobalValue::AvailableExternallyLinkage;
1466 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1467 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1468 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1469 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1476 /// ParseOptionalVisibility
1482 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1483 switch (Lex.getKind()) {
1484 default: Res = GlobalValue::DefaultVisibility; return false;
1485 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1486 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1487 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1493 /// ParseOptionalDLLStorageClass
1498 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1499 switch (Lex.getKind()) {
1500 default: Res = GlobalValue::DefaultStorageClass; return false;
1501 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1502 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1508 /// ParseOptionalCallingConv
1512 /// ::= 'intel_ocl_bicc'
1514 /// ::= 'x86_stdcallcc'
1515 /// ::= 'x86_fastcallcc'
1516 /// ::= 'x86_thiscallcc'
1517 /// ::= 'x86_vectorcallcc'
1518 /// ::= 'arm_apcscc'
1519 /// ::= 'arm_aapcscc'
1520 /// ::= 'arm_aapcs_vfpcc'
1521 /// ::= 'msp430_intrcc'
1522 /// ::= 'ptx_kernel'
1523 /// ::= 'ptx_device'
1525 /// ::= 'spir_kernel'
1526 /// ::= 'x86_64_sysvcc'
1527 /// ::= 'x86_64_win64cc'
1528 /// ::= 'webkit_jscc'
1530 /// ::= 'preserve_mostcc'
1531 /// ::= 'preserve_allcc'
1535 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1536 switch (Lex.getKind()) {
1537 default: CC = CallingConv::C; return false;
1538 case lltok::kw_ccc: CC = CallingConv::C; break;
1539 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1540 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1541 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1542 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1543 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1544 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1545 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1546 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1547 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1548 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1549 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1550 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1551 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1552 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1553 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1554 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1555 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1556 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1557 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1558 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1559 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1560 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1561 case lltok::kw_cc: {
1563 return ParseUInt32(CC);
1571 /// ParseMetadataAttachment
1573 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1574 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1576 std::string Name = Lex.getStrVal();
1577 Kind = M->getMDKindID(Name);
1580 return ParseMDNode(MD);
1583 /// ParseInstructionMetadata
1584 /// ::= !dbg !42 (',' !dbg !57)*
1585 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1587 if (Lex.getKind() != lltok::MetadataVar)
1588 return TokError("expected metadata after comma");
1592 if (ParseMetadataAttachment(MDK, N))
1595 Inst.setMetadata(MDK, N);
1596 if (MDK == LLVMContext::MD_tbaa)
1597 InstsWithTBAATag.push_back(&Inst);
1599 // If this is the end of the list, we're done.
1600 } while (EatIfPresent(lltok::comma));
1604 /// ParseOptionalFunctionMetadata
1606 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1607 while (Lex.getKind() == lltok::MetadataVar) {
1610 if (ParseMetadataAttachment(MDK, N))
1613 F.setMetadata(MDK, N);
1618 /// ParseOptionalAlignment
1621 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1623 if (!EatIfPresent(lltok::kw_align))
1625 LocTy AlignLoc = Lex.getLoc();
1626 if (ParseUInt32(Alignment)) return true;
1627 if (!isPowerOf2_32(Alignment))
1628 return Error(AlignLoc, "alignment is not a power of two");
1629 if (Alignment > Value::MaximumAlignment)
1630 return Error(AlignLoc, "huge alignments are not supported yet");
1634 /// ParseOptionalDerefAttrBytes
1636 /// ::= AttrKind '(' 4 ')'
1638 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1639 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1641 assert((AttrKind == lltok::kw_dereferenceable ||
1642 AttrKind == lltok::kw_dereferenceable_or_null) &&
1646 if (!EatIfPresent(AttrKind))
1648 LocTy ParenLoc = Lex.getLoc();
1649 if (!EatIfPresent(lltok::lparen))
1650 return Error(ParenLoc, "expected '('");
1651 LocTy DerefLoc = Lex.getLoc();
1652 if (ParseUInt64(Bytes)) return true;
1653 ParenLoc = Lex.getLoc();
1654 if (!EatIfPresent(lltok::rparen))
1655 return Error(ParenLoc, "expected ')'");
1657 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1661 /// ParseOptionalCommaAlign
1665 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1667 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1668 bool &AteExtraComma) {
1669 AteExtraComma = false;
1670 while (EatIfPresent(lltok::comma)) {
1671 // Metadata at the end is an early exit.
1672 if (Lex.getKind() == lltok::MetadataVar) {
1673 AteExtraComma = true;
1677 if (Lex.getKind() != lltok::kw_align)
1678 return Error(Lex.getLoc(), "expected metadata or 'align'");
1680 if (ParseOptionalAlignment(Alignment)) return true;
1686 /// ParseScopeAndOrdering
1687 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1690 /// This sets Scope and Ordering to the parsed values.
1691 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1692 AtomicOrdering &Ordering) {
1696 Scope = CrossThread;
1697 if (EatIfPresent(lltok::kw_singlethread))
1698 Scope = SingleThread;
1700 return ParseOrdering(Ordering);
1704 /// ::= AtomicOrdering
1706 /// This sets Ordering to the parsed value.
1707 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1708 switch (Lex.getKind()) {
1709 default: return TokError("Expected ordering on atomic instruction");
1710 case lltok::kw_unordered: Ordering = Unordered; break;
1711 case lltok::kw_monotonic: Ordering = Monotonic; break;
1712 case lltok::kw_acquire: Ordering = Acquire; break;
1713 case lltok::kw_release: Ordering = Release; break;
1714 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1715 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1721 /// ParseOptionalStackAlignment
1723 /// ::= 'alignstack' '(' 4 ')'
1724 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1726 if (!EatIfPresent(lltok::kw_alignstack))
1728 LocTy ParenLoc = Lex.getLoc();
1729 if (!EatIfPresent(lltok::lparen))
1730 return Error(ParenLoc, "expected '('");
1731 LocTy AlignLoc = Lex.getLoc();
1732 if (ParseUInt32(Alignment)) return true;
1733 ParenLoc = Lex.getLoc();
1734 if (!EatIfPresent(lltok::rparen))
1735 return Error(ParenLoc, "expected ')'");
1736 if (!isPowerOf2_32(Alignment))
1737 return Error(AlignLoc, "stack alignment is not a power of two");
1741 /// ParseIndexList - This parses the index list for an insert/extractvalue
1742 /// instruction. This sets AteExtraComma in the case where we eat an extra
1743 /// comma at the end of the line and find that it is followed by metadata.
1744 /// Clients that don't allow metadata can call the version of this function that
1745 /// only takes one argument.
1748 /// ::= (',' uint32)+
1750 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1751 bool &AteExtraComma) {
1752 AteExtraComma = false;
1754 if (Lex.getKind() != lltok::comma)
1755 return TokError("expected ',' as start of index list");
1757 while (EatIfPresent(lltok::comma)) {
1758 if (Lex.getKind() == lltok::MetadataVar) {
1759 if (Indices.empty()) return TokError("expected index");
1760 AteExtraComma = true;
1764 if (ParseUInt32(Idx)) return true;
1765 Indices.push_back(Idx);
1771 //===----------------------------------------------------------------------===//
1773 //===----------------------------------------------------------------------===//
1775 /// ParseType - Parse a type.
1776 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1777 SMLoc TypeLoc = Lex.getLoc();
1778 switch (Lex.getKind()) {
1780 return TokError(Msg);
1782 // Type ::= 'float' | 'void' (etc)
1783 Result = Lex.getTyVal();
1787 // Type ::= StructType
1788 if (ParseAnonStructType(Result, false))
1791 case lltok::lsquare:
1792 // Type ::= '[' ... ']'
1793 Lex.Lex(); // eat the lsquare.
1794 if (ParseArrayVectorType(Result, false))
1797 case lltok::less: // Either vector or packed struct.
1798 // Type ::= '<' ... '>'
1800 if (Lex.getKind() == lltok::lbrace) {
1801 if (ParseAnonStructType(Result, true) ||
1802 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1804 } else if (ParseArrayVectorType(Result, true))
1807 case lltok::LocalVar: {
1809 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1811 // If the type hasn't been defined yet, create a forward definition and
1812 // remember where that forward def'n was seen (in case it never is defined).
1814 Entry.first = StructType::create(Context, Lex.getStrVal());
1815 Entry.second = Lex.getLoc();
1817 Result = Entry.first;
1822 case lltok::LocalVarID: {
1824 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1826 // If the type hasn't been defined yet, create a forward definition and
1827 // remember where that forward def'n was seen (in case it never is defined).
1829 Entry.first = StructType::create(Context);
1830 Entry.second = Lex.getLoc();
1832 Result = Entry.first;
1838 // Parse the type suffixes.
1840 switch (Lex.getKind()) {
1843 if (!AllowVoid && Result->isVoidTy())
1844 return Error(TypeLoc, "void type only allowed for function results");
1847 // Type ::= Type '*'
1849 if (Result->isLabelTy())
1850 return TokError("basic block pointers are invalid");
1851 if (Result->isVoidTy())
1852 return TokError("pointers to void are invalid - use i8* instead");
1853 if (!PointerType::isValidElementType(Result))
1854 return TokError("pointer to this type is invalid");
1855 Result = PointerType::getUnqual(Result);
1859 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1860 case lltok::kw_addrspace: {
1861 if (Result->isLabelTy())
1862 return TokError("basic block pointers are invalid");
1863 if (Result->isVoidTy())
1864 return TokError("pointers to void are invalid; use i8* instead");
1865 if (!PointerType::isValidElementType(Result))
1866 return TokError("pointer to this type is invalid");
1868 if (ParseOptionalAddrSpace(AddrSpace) ||
1869 ParseToken(lltok::star, "expected '*' in address space"))
1872 Result = PointerType::get(Result, AddrSpace);
1876 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1878 if (ParseFunctionType(Result))
1885 /// ParseParameterList
1887 /// ::= '(' Arg (',' Arg)* ')'
1889 /// ::= Type OptionalAttributes Value OptionalAttributes
1890 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1891 PerFunctionState &PFS, bool IsMustTailCall,
1892 bool InVarArgsFunc) {
1893 if (ParseToken(lltok::lparen, "expected '(' in call"))
1896 unsigned AttrIndex = 1;
1897 while (Lex.getKind() != lltok::rparen) {
1898 // If this isn't the first argument, we need a comma.
1899 if (!ArgList.empty() &&
1900 ParseToken(lltok::comma, "expected ',' in argument list"))
1903 // Parse an ellipsis if this is a musttail call in a variadic function.
1904 if (Lex.getKind() == lltok::dotdotdot) {
1905 const char *Msg = "unexpected ellipsis in argument list for ";
1906 if (!IsMustTailCall)
1907 return TokError(Twine(Msg) + "non-musttail call");
1909 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1910 Lex.Lex(); // Lex the '...', it is purely for readability.
1911 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1914 // Parse the argument.
1916 Type *ArgTy = nullptr;
1917 AttrBuilder ArgAttrs;
1919 if (ParseType(ArgTy, ArgLoc))
1922 if (ArgTy->isMetadataTy()) {
1923 if (ParseMetadataAsValue(V, PFS))
1926 // Otherwise, handle normal operands.
1927 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1930 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1935 if (IsMustTailCall && InVarArgsFunc)
1936 return TokError("expected '...' at end of argument list for musttail call "
1937 "in varargs function");
1939 Lex.Lex(); // Lex the ')'.
1945 /// ParseArgumentList - Parse the argument list for a function type or function
1947 /// ::= '(' ArgTypeListI ')'
1951 /// ::= ArgTypeList ',' '...'
1952 /// ::= ArgType (',' ArgType)*
1954 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1957 assert(Lex.getKind() == lltok::lparen);
1958 Lex.Lex(); // eat the (.
1960 if (Lex.getKind() == lltok::rparen) {
1962 } else if (Lex.getKind() == lltok::dotdotdot) {
1966 LocTy TypeLoc = Lex.getLoc();
1967 Type *ArgTy = nullptr;
1971 if (ParseType(ArgTy) ||
1972 ParseOptionalParamAttrs(Attrs)) return true;
1974 if (ArgTy->isVoidTy())
1975 return Error(TypeLoc, "argument can not have void type");
1977 if (Lex.getKind() == lltok::LocalVar) {
1978 Name = Lex.getStrVal();
1982 if (!FunctionType::isValidArgumentType(ArgTy))
1983 return Error(TypeLoc, "invalid type for function argument");
1985 unsigned AttrIndex = 1;
1986 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1987 AttrIndex++, Attrs),
1990 while (EatIfPresent(lltok::comma)) {
1991 // Handle ... at end of arg list.
1992 if (EatIfPresent(lltok::dotdotdot)) {
1997 // Otherwise must be an argument type.
1998 TypeLoc = Lex.getLoc();
1999 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2001 if (ArgTy->isVoidTy())
2002 return Error(TypeLoc, "argument can not have void type");
2004 if (Lex.getKind() == lltok::LocalVar) {
2005 Name = Lex.getStrVal();
2011 if (!ArgTy->isFirstClassType())
2012 return Error(TypeLoc, "invalid type for function argument");
2014 ArgList.emplace_back(
2016 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2021 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2024 /// ParseFunctionType
2025 /// ::= Type ArgumentList OptionalAttrs
2026 bool LLParser::ParseFunctionType(Type *&Result) {
2027 assert(Lex.getKind() == lltok::lparen);
2029 if (!FunctionType::isValidReturnType(Result))
2030 return TokError("invalid function return type");
2032 SmallVector<ArgInfo, 8> ArgList;
2034 if (ParseArgumentList(ArgList, isVarArg))
2037 // Reject names on the arguments lists.
2038 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2039 if (!ArgList[i].Name.empty())
2040 return Error(ArgList[i].Loc, "argument name invalid in function type");
2041 if (ArgList[i].Attrs.hasAttributes(i + 1))
2042 return Error(ArgList[i].Loc,
2043 "argument attributes invalid in function type");
2046 SmallVector<Type*, 16> ArgListTy;
2047 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2048 ArgListTy.push_back(ArgList[i].Ty);
2050 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2054 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2056 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2057 SmallVector<Type*, 8> Elts;
2058 if (ParseStructBody(Elts)) return true;
2060 Result = StructType::get(Context, Elts, Packed);
2064 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2065 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2066 std::pair<Type*, LocTy> &Entry,
2068 // If the type was already defined, diagnose the redefinition.
2069 if (Entry.first && !Entry.second.isValid())
2070 return Error(TypeLoc, "redefinition of type");
2072 // If we have opaque, just return without filling in the definition for the
2073 // struct. This counts as a definition as far as the .ll file goes.
2074 if (EatIfPresent(lltok::kw_opaque)) {
2075 // This type is being defined, so clear the location to indicate this.
2076 Entry.second = SMLoc();
2078 // If this type number has never been uttered, create it.
2080 Entry.first = StructType::create(Context, Name);
2081 ResultTy = Entry.first;
2085 // If the type starts with '<', then it is either a packed struct or a vector.
2086 bool isPacked = EatIfPresent(lltok::less);
2088 // If we don't have a struct, then we have a random type alias, which we
2089 // accept for compatibility with old files. These types are not allowed to be
2090 // forward referenced and not allowed to be recursive.
2091 if (Lex.getKind() != lltok::lbrace) {
2093 return Error(TypeLoc, "forward references to non-struct type");
2097 return ParseArrayVectorType(ResultTy, true);
2098 return ParseType(ResultTy);
2101 // This type is being defined, so clear the location to indicate this.
2102 Entry.second = SMLoc();
2104 // If this type number has never been uttered, create it.
2106 Entry.first = StructType::create(Context, Name);
2108 StructType *STy = cast<StructType>(Entry.first);
2110 SmallVector<Type*, 8> Body;
2111 if (ParseStructBody(Body) ||
2112 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2115 STy->setBody(Body, isPacked);
2121 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2124 /// ::= '{' Type (',' Type)* '}'
2125 /// ::= '<' '{' '}' '>'
2126 /// ::= '<' '{' Type (',' Type)* '}' '>'
2127 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2128 assert(Lex.getKind() == lltok::lbrace);
2129 Lex.Lex(); // Consume the '{'
2131 // Handle the empty struct.
2132 if (EatIfPresent(lltok::rbrace))
2135 LocTy EltTyLoc = Lex.getLoc();
2137 if (ParseType(Ty)) return true;
2140 if (!StructType::isValidElementType(Ty))
2141 return Error(EltTyLoc, "invalid element type for struct");
2143 while (EatIfPresent(lltok::comma)) {
2144 EltTyLoc = Lex.getLoc();
2145 if (ParseType(Ty)) return true;
2147 if (!StructType::isValidElementType(Ty))
2148 return Error(EltTyLoc, "invalid element type for struct");
2153 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2156 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2157 /// token has already been consumed.
2159 /// ::= '[' APSINTVAL 'x' Types ']'
2160 /// ::= '<' APSINTVAL 'x' Types '>'
2161 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2162 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2163 Lex.getAPSIntVal().getBitWidth() > 64)
2164 return TokError("expected number in address space");
2166 LocTy SizeLoc = Lex.getLoc();
2167 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2170 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2173 LocTy TypeLoc = Lex.getLoc();
2174 Type *EltTy = nullptr;
2175 if (ParseType(EltTy)) return true;
2177 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2178 "expected end of sequential type"))
2183 return Error(SizeLoc, "zero element vector is illegal");
2184 if ((unsigned)Size != Size)
2185 return Error(SizeLoc, "size too large for vector");
2186 if (!VectorType::isValidElementType(EltTy))
2187 return Error(TypeLoc, "invalid vector element type");
2188 Result = VectorType::get(EltTy, unsigned(Size));
2190 if (!ArrayType::isValidElementType(EltTy))
2191 return Error(TypeLoc, "invalid array element type");
2192 Result = ArrayType::get(EltTy, Size);
2197 //===----------------------------------------------------------------------===//
2198 // Function Semantic Analysis.
2199 //===----------------------------------------------------------------------===//
2201 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2203 : P(p), F(f), FunctionNumber(functionNumber) {
2205 // Insert unnamed arguments into the NumberedVals list.
2206 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2209 NumberedVals.push_back(AI);
2212 LLParser::PerFunctionState::~PerFunctionState() {
2213 // If there were any forward referenced non-basicblock values, delete them.
2214 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2215 I = ForwardRefVals.begin(), E = ForwardRefVals.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;
2223 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2224 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2225 if (!isa<BasicBlock>(I->second.first)) {
2226 I->second.first->replaceAllUsesWith(
2227 UndefValue::get(I->second.first->getType()));
2228 delete I->second.first;
2229 I->second.first = nullptr;
2233 bool LLParser::PerFunctionState::FinishFunction() {
2234 if (!ForwardRefVals.empty())
2235 return P.Error(ForwardRefVals.begin()->second.second,
2236 "use of undefined value '%" + ForwardRefVals.begin()->first +
2238 if (!ForwardRefValIDs.empty())
2239 return P.Error(ForwardRefValIDs.begin()->second.second,
2240 "use of undefined value '%" +
2241 Twine(ForwardRefValIDs.begin()->first) + "'");
2246 /// GetVal - Get a value with the specified name or ID, creating a
2247 /// forward reference record if needed. This can return null if the value
2248 /// exists but does not have the right type.
2249 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2250 LocTy Loc, OperatorConstraint OC) {
2251 // Look this name up in the normal function symbol table.
2252 Value *Val = F.getValueSymbolTable().lookup(Name);
2254 // If this is a forward reference for the value, see if we already created a
2255 // forward ref record.
2257 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2258 I = ForwardRefVals.find(Name);
2259 if (I != ForwardRefVals.end())
2260 Val = I->second.first;
2263 // If we have the value in the symbol table or fwd-ref table, return it.
2265 // Check operator constraints.
2271 if (!isa<CatchPadInst>(Val)) {
2272 P.Error(Loc, "'%" + Name + "' is not a catchpad");
2277 if (!isa<CleanupPadInst>(Val)) {
2278 P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
2283 if (Val->getType() == Ty) return Val;
2284 if (Ty->isLabelTy())
2285 P.Error(Loc, "'%" + Name + "' is not a basic block");
2287 P.Error(Loc, "'%" + Name + "' defined with type '" +
2288 getTypeString(Val->getType()) + "'");
2292 // Don't make placeholders with invalid type.
2293 if (!Ty->isFirstClassType()) {
2294 P.Error(Loc, "invalid use of a non-first-class type");
2298 // Otherwise, create a new forward reference for this value and remember it.
2300 if (Ty->isLabelTy()) {
2302 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2304 FwdVal = new Argument(Ty, Name);
2308 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
2312 FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
2315 llvm_unreachable("unexpected constraint");
2319 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2323 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
2324 OperatorConstraint OC) {
2325 // Look this name up in the normal function symbol table.
2326 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2328 // If this is a forward reference for the value, see if we already created a
2329 // forward ref record.
2331 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2332 I = ForwardRefValIDs.find(ID);
2333 if (I != ForwardRefValIDs.end())
2334 Val = I->second.first;
2337 // If we have the value in the symbol table or fwd-ref table, return it.
2339 // Check operator constraint.
2345 if (!isa<CatchPadInst>(Val)) {
2346 P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
2351 if (!isa<CleanupPadInst>(Val)) {
2352 P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
2357 if (Val->getType() == Ty) return Val;
2358 if (Ty->isLabelTy())
2359 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2361 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2362 getTypeString(Val->getType()) + "'");
2366 if (!Ty->isFirstClassType()) {
2367 P.Error(Loc, "invalid use of a non-first-class type");
2371 // Otherwise, create a new forward reference for this value and remember it.
2373 if (Ty->isLabelTy()) {
2375 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2377 FwdVal = new Argument(Ty);
2381 FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
2384 FwdVal = CleanupPadInst::Create(F.getContext(), {});
2387 llvm_unreachable("unexpected constraint");
2391 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2395 /// SetInstName - After an instruction is parsed and inserted into its
2396 /// basic block, this installs its name.
2397 bool LLParser::PerFunctionState::SetInstName(int NameID,
2398 const std::string &NameStr,
2399 LocTy NameLoc, Instruction *Inst) {
2400 // If this instruction has void type, it cannot have a name or ID specified.
2401 if (Inst->getType()->isVoidTy()) {
2402 if (NameID != -1 || !NameStr.empty())
2403 return P.Error(NameLoc, "instructions returning void cannot have a name");
2407 // If this was a numbered instruction, verify that the instruction is the
2408 // expected value and resolve any forward references.
2409 if (NameStr.empty()) {
2410 // If neither a name nor an ID was specified, just use the next ID.
2412 NameID = NumberedVals.size();
2414 if (unsigned(NameID) != NumberedVals.size())
2415 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2416 Twine(NumberedVals.size()) + "'");
2418 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2419 ForwardRefValIDs.find(NameID);
2420 if (FI != ForwardRefValIDs.end()) {
2421 Value *Sentinel = FI->second.first;
2422 if (Sentinel->getType() != Inst->getType())
2423 return P.Error(NameLoc, "instruction forward referenced with type '" +
2424 getTypeString(FI->second.first->getType()) + "'");
2425 // Check operator constraints. We only put cleanuppads or catchpads in
2426 // the forward value map if the value is constrained to match.
2427 if (isa<CatchPadInst>(Sentinel)) {
2428 if (!isa<CatchPadInst>(Inst))
2429 return P.Error(FI->second.second,
2430 "'%" + Twine(NameID) + "' is not a catchpad");
2431 } else if (isa<CleanupPadInst>(Sentinel)) {
2432 if (!isa<CleanupPadInst>(Inst))
2433 return P.Error(FI->second.second,
2434 "'%" + Twine(NameID) + "' is not a cleanuppad");
2437 Sentinel->replaceAllUsesWith(Inst);
2439 ForwardRefValIDs.erase(FI);
2442 NumberedVals.push_back(Inst);
2446 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2447 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2448 FI = ForwardRefVals.find(NameStr);
2449 if (FI != ForwardRefVals.end()) {
2450 Value *Sentinel = FI->second.first;
2451 if (Sentinel->getType() != Inst->getType())
2452 return P.Error(NameLoc, "instruction forward referenced with type '" +
2453 getTypeString(FI->second.first->getType()) + "'");
2454 // Check operator constraints. We only put cleanuppads or catchpads in
2455 // the forward value map if the value is constrained to match.
2456 if (isa<CatchPadInst>(Sentinel)) {
2457 if (!isa<CatchPadInst>(Inst))
2458 return P.Error(FI->second.second,
2459 "'%" + NameStr + "' is not a catchpad");
2460 } else if (isa<CleanupPadInst>(Sentinel)) {
2461 if (!isa<CleanupPadInst>(Inst))
2462 return P.Error(FI->second.second,
2463 "'%" + NameStr + "' is not a cleanuppad");
2466 Sentinel->replaceAllUsesWith(Inst);
2468 ForwardRefVals.erase(FI);
2471 // Set the name on the instruction.
2472 Inst->setName(NameStr);
2474 if (Inst->getName() != NameStr)
2475 return P.Error(NameLoc, "multiple definition of local value named '" +
2480 /// GetBB - Get a basic block with the specified name or ID, creating a
2481 /// forward reference record if needed.
2482 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2484 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2485 Type::getLabelTy(F.getContext()), Loc));
2488 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2489 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2490 Type::getLabelTy(F.getContext()), Loc));
2493 /// DefineBB - Define the specified basic block, which is either named or
2494 /// unnamed. If there is an error, this returns null otherwise it returns
2495 /// the block being defined.
2496 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2500 BB = GetBB(NumberedVals.size(), Loc);
2502 BB = GetBB(Name, Loc);
2503 if (!BB) return nullptr; // Already diagnosed error.
2505 // Move the block to the end of the function. Forward ref'd blocks are
2506 // inserted wherever they happen to be referenced.
2507 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2509 // Remove the block from forward ref sets.
2511 ForwardRefValIDs.erase(NumberedVals.size());
2512 NumberedVals.push_back(BB);
2514 // BB forward references are already in the function symbol table.
2515 ForwardRefVals.erase(Name);
2521 //===----------------------------------------------------------------------===//
2523 //===----------------------------------------------------------------------===//
2525 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2526 /// type implied. For example, if we parse "4" we don't know what integer type
2527 /// it has. The value will later be combined with its type and checked for
2528 /// sanity. PFS is used to convert function-local operands of metadata (since
2529 /// metadata operands are not just parsed here but also converted to values).
2530 /// PFS can be null when we are not parsing metadata values inside a function.
2531 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2532 ID.Loc = Lex.getLoc();
2533 switch (Lex.getKind()) {
2534 default: return TokError("expected value token");
2535 case lltok::GlobalID: // @42
2536 ID.UIntVal = Lex.getUIntVal();
2537 ID.Kind = ValID::t_GlobalID;
2539 case lltok::GlobalVar: // @foo
2540 ID.StrVal = Lex.getStrVal();
2541 ID.Kind = ValID::t_GlobalName;
2543 case lltok::LocalVarID: // %42
2544 ID.UIntVal = Lex.getUIntVal();
2545 ID.Kind = ValID::t_LocalID;
2547 case lltok::LocalVar: // %foo
2548 ID.StrVal = Lex.getStrVal();
2549 ID.Kind = ValID::t_LocalName;
2552 ID.APSIntVal = Lex.getAPSIntVal();
2553 ID.Kind = ValID::t_APSInt;
2555 case lltok::APFloat:
2556 ID.APFloatVal = Lex.getAPFloatVal();
2557 ID.Kind = ValID::t_APFloat;
2559 case lltok::kw_true:
2560 ID.ConstantVal = ConstantInt::getTrue(Context);
2561 ID.Kind = ValID::t_Constant;
2563 case lltok::kw_false:
2564 ID.ConstantVal = ConstantInt::getFalse(Context);
2565 ID.Kind = ValID::t_Constant;
2567 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2568 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2569 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2571 case lltok::lbrace: {
2572 // ValID ::= '{' ConstVector '}'
2574 SmallVector<Constant*, 16> Elts;
2575 if (ParseGlobalValueVector(Elts) ||
2576 ParseToken(lltok::rbrace, "expected end of struct constant"))
2579 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2580 ID.UIntVal = Elts.size();
2581 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2582 Elts.size() * sizeof(Elts[0]));
2583 ID.Kind = ValID::t_ConstantStruct;
2587 // ValID ::= '<' ConstVector '>' --> Vector.
2588 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2590 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2592 SmallVector<Constant*, 16> Elts;
2593 LocTy FirstEltLoc = Lex.getLoc();
2594 if (ParseGlobalValueVector(Elts) ||
2596 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2597 ParseToken(lltok::greater, "expected end of constant"))
2600 if (isPackedStruct) {
2601 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2602 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2603 Elts.size() * sizeof(Elts[0]));
2604 ID.UIntVal = Elts.size();
2605 ID.Kind = ValID::t_PackedConstantStruct;
2610 return Error(ID.Loc, "constant vector must not be empty");
2612 if (!Elts[0]->getType()->isIntegerTy() &&
2613 !Elts[0]->getType()->isFloatingPointTy() &&
2614 !Elts[0]->getType()->isPointerTy())
2615 return Error(FirstEltLoc,
2616 "vector elements must have integer, pointer or floating point type");
2618 // Verify that all the vector elements have the same type.
2619 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2620 if (Elts[i]->getType() != Elts[0]->getType())
2621 return Error(FirstEltLoc,
2622 "vector element #" + Twine(i) +
2623 " is not of type '" + getTypeString(Elts[0]->getType()));
2625 ID.ConstantVal = ConstantVector::get(Elts);
2626 ID.Kind = ValID::t_Constant;
2629 case lltok::lsquare: { // Array Constant
2631 SmallVector<Constant*, 16> Elts;
2632 LocTy FirstEltLoc = Lex.getLoc();
2633 if (ParseGlobalValueVector(Elts) ||
2634 ParseToken(lltok::rsquare, "expected end of array constant"))
2637 // Handle empty element.
2639 // Use undef instead of an array because it's inconvenient to determine
2640 // the element type at this point, there being no elements to examine.
2641 ID.Kind = ValID::t_EmptyArray;
2645 if (!Elts[0]->getType()->isFirstClassType())
2646 return Error(FirstEltLoc, "invalid array element type: " +
2647 getTypeString(Elts[0]->getType()));
2649 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2651 // Verify all elements are correct type!
2652 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2653 if (Elts[i]->getType() != Elts[0]->getType())
2654 return Error(FirstEltLoc,
2655 "array element #" + Twine(i) +
2656 " is not of type '" + getTypeString(Elts[0]->getType()));
2659 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2660 ID.Kind = ValID::t_Constant;
2663 case lltok::kw_c: // c "foo"
2665 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2667 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2668 ID.Kind = ValID::t_Constant;
2671 case lltok::kw_asm: {
2672 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2674 bool HasSideEffect, AlignStack, AsmDialect;
2676 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2677 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2678 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2679 ParseStringConstant(ID.StrVal) ||
2680 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2681 ParseToken(lltok::StringConstant, "expected constraint string"))
2683 ID.StrVal2 = Lex.getStrVal();
2684 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2685 (unsigned(AsmDialect)<<2);
2686 ID.Kind = ValID::t_InlineAsm;
2690 case lltok::kw_blockaddress: {
2691 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2696 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2698 ParseToken(lltok::comma, "expected comma in block address expression")||
2699 ParseValID(Label) ||
2700 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2703 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2704 return Error(Fn.Loc, "expected function name in blockaddress");
2705 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2706 return Error(Label.Loc, "expected basic block name in blockaddress");
2708 // Try to find the function (but skip it if it's forward-referenced).
2709 GlobalValue *GV = nullptr;
2710 if (Fn.Kind == ValID::t_GlobalID) {
2711 if (Fn.UIntVal < NumberedVals.size())
2712 GV = NumberedVals[Fn.UIntVal];
2713 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2714 GV = M->getNamedValue(Fn.StrVal);
2716 Function *F = nullptr;
2718 // Confirm that it's actually a function with a definition.
2719 if (!isa<Function>(GV))
2720 return Error(Fn.Loc, "expected function name in blockaddress");
2721 F = cast<Function>(GV);
2722 if (F->isDeclaration())
2723 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2727 // Make a global variable as a placeholder for this reference.
2728 GlobalValue *&FwdRef =
2729 ForwardRefBlockAddresses.insert(std::make_pair(
2731 std::map<ValID, GlobalValue *>()))
2732 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2735 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2736 GlobalValue::InternalLinkage, nullptr, "");
2737 ID.ConstantVal = FwdRef;
2738 ID.Kind = ValID::t_Constant;
2742 // We found the function; now find the basic block. Don't use PFS, since we
2743 // might be inside a constant expression.
2745 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2746 if (Label.Kind == ValID::t_LocalID)
2747 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2749 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2751 return Error(Label.Loc, "referenced value is not a basic block");
2753 if (Label.Kind == ValID::t_LocalID)
2754 return Error(Label.Loc, "cannot take address of numeric label after "
2755 "the function is defined");
2756 BB = dyn_cast_or_null<BasicBlock>(
2757 F->getValueSymbolTable().lookup(Label.StrVal));
2759 return Error(Label.Loc, "referenced value is not a basic block");
2762 ID.ConstantVal = BlockAddress::get(F, BB);
2763 ID.Kind = ValID::t_Constant;
2767 case lltok::kw_trunc:
2768 case lltok::kw_zext:
2769 case lltok::kw_sext:
2770 case lltok::kw_fptrunc:
2771 case lltok::kw_fpext:
2772 case lltok::kw_bitcast:
2773 case lltok::kw_addrspacecast:
2774 case lltok::kw_uitofp:
2775 case lltok::kw_sitofp:
2776 case lltok::kw_fptoui:
2777 case lltok::kw_fptosi:
2778 case lltok::kw_inttoptr:
2779 case lltok::kw_ptrtoint: {
2780 unsigned Opc = Lex.getUIntVal();
2781 Type *DestTy = nullptr;
2784 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2785 ParseGlobalTypeAndValue(SrcVal) ||
2786 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2787 ParseType(DestTy) ||
2788 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2790 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2791 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2792 getTypeString(SrcVal->getType()) + "' to '" +
2793 getTypeString(DestTy) + "'");
2794 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2796 ID.Kind = ValID::t_Constant;
2799 case lltok::kw_extractvalue: {
2802 SmallVector<unsigned, 4> Indices;
2803 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2804 ParseGlobalTypeAndValue(Val) ||
2805 ParseIndexList(Indices) ||
2806 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2809 if (!Val->getType()->isAggregateType())
2810 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2811 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2812 return Error(ID.Loc, "invalid indices for extractvalue");
2813 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2814 ID.Kind = ValID::t_Constant;
2817 case lltok::kw_insertvalue: {
2819 Constant *Val0, *Val1;
2820 SmallVector<unsigned, 4> Indices;
2821 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2822 ParseGlobalTypeAndValue(Val0) ||
2823 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2824 ParseGlobalTypeAndValue(Val1) ||
2825 ParseIndexList(Indices) ||
2826 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2828 if (!Val0->getType()->isAggregateType())
2829 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2831 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2833 return Error(ID.Loc, "invalid indices for insertvalue");
2834 if (IndexedType != Val1->getType())
2835 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2836 getTypeString(Val1->getType()) +
2837 "' instead of '" + getTypeString(IndexedType) +
2839 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2840 ID.Kind = ValID::t_Constant;
2843 case lltok::kw_icmp:
2844 case lltok::kw_fcmp: {
2845 unsigned PredVal, Opc = Lex.getUIntVal();
2846 Constant *Val0, *Val1;
2848 if (ParseCmpPredicate(PredVal, Opc) ||
2849 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2850 ParseGlobalTypeAndValue(Val0) ||
2851 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2852 ParseGlobalTypeAndValue(Val1) ||
2853 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2856 if (Val0->getType() != Val1->getType())
2857 return Error(ID.Loc, "compare operands must have the same type");
2859 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2861 if (Opc == Instruction::FCmp) {
2862 if (!Val0->getType()->isFPOrFPVectorTy())
2863 return Error(ID.Loc, "fcmp requires floating point operands");
2864 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2866 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2867 if (!Val0->getType()->isIntOrIntVectorTy() &&
2868 !Val0->getType()->getScalarType()->isPointerTy())
2869 return Error(ID.Loc, "icmp requires pointer or integer operands");
2870 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2872 ID.Kind = ValID::t_Constant;
2876 // Binary Operators.
2878 case lltok::kw_fadd:
2880 case lltok::kw_fsub:
2882 case lltok::kw_fmul:
2883 case lltok::kw_udiv:
2884 case lltok::kw_sdiv:
2885 case lltok::kw_fdiv:
2886 case lltok::kw_urem:
2887 case lltok::kw_srem:
2888 case lltok::kw_frem:
2890 case lltok::kw_lshr:
2891 case lltok::kw_ashr: {
2895 unsigned Opc = Lex.getUIntVal();
2896 Constant *Val0, *Val1;
2898 LocTy ModifierLoc = Lex.getLoc();
2899 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2900 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2901 if (EatIfPresent(lltok::kw_nuw))
2903 if (EatIfPresent(lltok::kw_nsw)) {
2905 if (EatIfPresent(lltok::kw_nuw))
2908 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2909 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2910 if (EatIfPresent(lltok::kw_exact))
2913 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2914 ParseGlobalTypeAndValue(Val0) ||
2915 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2916 ParseGlobalTypeAndValue(Val1) ||
2917 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2919 if (Val0->getType() != Val1->getType())
2920 return Error(ID.Loc, "operands of constexpr must have same type");
2921 if (!Val0->getType()->isIntOrIntVectorTy()) {
2923 return Error(ModifierLoc, "nuw only applies to integer operations");
2925 return Error(ModifierLoc, "nsw only applies to integer operations");
2927 // Check that the type is valid for the operator.
2929 case Instruction::Add:
2930 case Instruction::Sub:
2931 case Instruction::Mul:
2932 case Instruction::UDiv:
2933 case Instruction::SDiv:
2934 case Instruction::URem:
2935 case Instruction::SRem:
2936 case Instruction::Shl:
2937 case Instruction::AShr:
2938 case Instruction::LShr:
2939 if (!Val0->getType()->isIntOrIntVectorTy())
2940 return Error(ID.Loc, "constexpr requires integer operands");
2942 case Instruction::FAdd:
2943 case Instruction::FSub:
2944 case Instruction::FMul:
2945 case Instruction::FDiv:
2946 case Instruction::FRem:
2947 if (!Val0->getType()->isFPOrFPVectorTy())
2948 return Error(ID.Loc, "constexpr requires fp operands");
2950 default: llvm_unreachable("Unknown binary operator!");
2953 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2954 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2955 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2956 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2958 ID.Kind = ValID::t_Constant;
2962 // Logical Operations
2965 case lltok::kw_xor: {
2966 unsigned Opc = Lex.getUIntVal();
2967 Constant *Val0, *Val1;
2969 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2970 ParseGlobalTypeAndValue(Val0) ||
2971 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2972 ParseGlobalTypeAndValue(Val1) ||
2973 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2975 if (Val0->getType() != Val1->getType())
2976 return Error(ID.Loc, "operands of constexpr must have same type");
2977 if (!Val0->getType()->isIntOrIntVectorTy())
2978 return Error(ID.Loc,
2979 "constexpr requires integer or integer vector operands");
2980 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2981 ID.Kind = ValID::t_Constant;
2985 case lltok::kw_getelementptr:
2986 case lltok::kw_shufflevector:
2987 case lltok::kw_insertelement:
2988 case lltok::kw_extractelement:
2989 case lltok::kw_select: {
2990 unsigned Opc = Lex.getUIntVal();
2991 SmallVector<Constant*, 16> Elts;
2992 bool InBounds = false;
2996 if (Opc == Instruction::GetElementPtr)
2997 InBounds = EatIfPresent(lltok::kw_inbounds);
2999 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3002 LocTy ExplicitTypeLoc = Lex.getLoc();
3003 if (Opc == Instruction::GetElementPtr) {
3004 if (ParseType(Ty) ||
3005 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3009 if (ParseGlobalValueVector(Elts) ||
3010 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3013 if (Opc == Instruction::GetElementPtr) {
3014 if (Elts.size() == 0 ||
3015 !Elts[0]->getType()->getScalarType()->isPointerTy())
3016 return Error(ID.Loc, "base of getelementptr must be a pointer");
3018 Type *BaseType = Elts[0]->getType();
3019 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3020 if (Ty != BasePointerType->getElementType())
3023 "explicit pointee type doesn't match operand's pointee type");
3025 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3026 for (Constant *Val : Indices) {
3027 Type *ValTy = Val->getType();
3028 if (!ValTy->getScalarType()->isIntegerTy())
3029 return Error(ID.Loc, "getelementptr index must be an integer");
3030 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3031 return Error(ID.Loc, "getelementptr index type missmatch");
3032 if (ValTy->isVectorTy()) {
3033 unsigned ValNumEl = ValTy->getVectorNumElements();
3034 unsigned PtrNumEl = BaseType->getVectorNumElements();
3035 if (ValNumEl != PtrNumEl)
3038 "getelementptr vector index has a wrong number of elements");
3042 SmallPtrSet<Type*, 4> Visited;
3043 if (!Indices.empty() && !Ty->isSized(&Visited))
3044 return Error(ID.Loc, "base element of getelementptr must be sized");
3046 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3047 return Error(ID.Loc, "invalid getelementptr indices");
3049 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3050 } else if (Opc == Instruction::Select) {
3051 if (Elts.size() != 3)
3052 return Error(ID.Loc, "expected three operands to select");
3053 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3055 return Error(ID.Loc, Reason);
3056 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3057 } else if (Opc == Instruction::ShuffleVector) {
3058 if (Elts.size() != 3)
3059 return Error(ID.Loc, "expected three operands to shufflevector");
3060 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3061 return Error(ID.Loc, "invalid operands to shufflevector");
3063 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3064 } else if (Opc == Instruction::ExtractElement) {
3065 if (Elts.size() != 2)
3066 return Error(ID.Loc, "expected two operands to extractelement");
3067 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3068 return Error(ID.Loc, "invalid extractelement operands");
3069 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3071 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3072 if (Elts.size() != 3)
3073 return Error(ID.Loc, "expected three operands to insertelement");
3074 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3075 return Error(ID.Loc, "invalid insertelement operands");
3077 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3080 ID.Kind = ValID::t_Constant;
3089 /// ParseGlobalValue - Parse a global value with the specified type.
3090 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3094 bool Parsed = ParseValID(ID) ||
3095 ConvertValIDToValue(Ty, ID, V, nullptr);
3096 if (V && !(C = dyn_cast<Constant>(V)))
3097 return Error(ID.Loc, "global values must be constants");
3101 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3103 return ParseType(Ty) ||
3104 ParseGlobalValue(Ty, V);
3107 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3110 LocTy KwLoc = Lex.getLoc();
3111 if (!EatIfPresent(lltok::kw_comdat))
3114 if (EatIfPresent(lltok::lparen)) {
3115 if (Lex.getKind() != lltok::ComdatVar)
3116 return TokError("expected comdat variable");
3117 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3119 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3122 if (GlobalName.empty())
3123 return TokError("comdat cannot be unnamed");
3124 C = getComdat(GlobalName, KwLoc);
3130 /// ParseGlobalValueVector
3132 /// ::= TypeAndValue (',' TypeAndValue)*
3133 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3135 if (Lex.getKind() == lltok::rbrace ||
3136 Lex.getKind() == lltok::rsquare ||
3137 Lex.getKind() == lltok::greater ||
3138 Lex.getKind() == lltok::rparen)
3142 if (ParseGlobalTypeAndValue(C)) return true;
3145 while (EatIfPresent(lltok::comma)) {
3146 if (ParseGlobalTypeAndValue(C)) return true;
3153 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3154 SmallVector<Metadata *, 16> Elts;
3155 if (ParseMDNodeVector(Elts))
3158 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3165 /// ::= !DILocation(...)
3166 bool LLParser::ParseMDNode(MDNode *&N) {
3167 if (Lex.getKind() == lltok::MetadataVar)
3168 return ParseSpecializedMDNode(N);
3170 return ParseToken(lltok::exclaim, "expected '!' here") ||
3174 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3176 if (Lex.getKind() == lltok::lbrace)
3177 return ParseMDTuple(N);
3180 return ParseMDNodeID(N);
3185 /// Structure to represent an optional metadata field.
3186 template <class FieldTy> struct MDFieldImpl {
3187 typedef MDFieldImpl ImplTy;
3191 void assign(FieldTy Val) {
3193 this->Val = std::move(Val);
3196 explicit MDFieldImpl(FieldTy Default)
3197 : Val(std::move(Default)), Seen(false) {}
3200 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3203 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3204 : ImplTy(Default), Max(Max) {}
3206 struct LineField : public MDUnsignedField {
3207 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3209 struct ColumnField : public MDUnsignedField {
3210 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3212 struct DwarfTagField : public MDUnsignedField {
3213 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3214 DwarfTagField(dwarf::Tag DefaultTag)
3215 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3217 struct DwarfAttEncodingField : public MDUnsignedField {
3218 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3220 struct DwarfVirtualityField : public MDUnsignedField {
3221 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3223 struct DwarfLangField : public MDUnsignedField {
3224 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3227 struct DIFlagField : public MDUnsignedField {
3228 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3231 struct MDSignedField : public MDFieldImpl<int64_t> {
3235 MDSignedField(int64_t Default = 0)
3236 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3237 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3238 : ImplTy(Default), Min(Min), Max(Max) {}
3241 struct MDBoolField : public MDFieldImpl<bool> {
3242 MDBoolField(bool Default = false) : ImplTy(Default) {}
3244 struct MDField : public MDFieldImpl<Metadata *> {
3247 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3249 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3250 MDConstant() : ImplTy(nullptr) {}
3252 struct MDStringField : public MDFieldImpl<MDString *> {
3254 MDStringField(bool AllowEmpty = true)
3255 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3257 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3258 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3266 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3267 MDUnsignedField &Result) {
3268 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3269 return TokError("expected unsigned integer");
3271 auto &U = Lex.getAPSIntVal();
3272 if (U.ugt(Result.Max))
3273 return TokError("value for '" + Name + "' too large, limit is " +
3275 Result.assign(U.getZExtValue());
3276 assert(Result.Val <= Result.Max && "Expected value in range");
3282 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3283 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3286 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3287 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3291 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3292 if (Lex.getKind() == lltok::APSInt)
3293 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3295 if (Lex.getKind() != lltok::DwarfTag)
3296 return TokError("expected DWARF tag");
3298 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3299 if (Tag == dwarf::DW_TAG_invalid)
3300 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3301 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3309 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3310 DwarfVirtualityField &Result) {
3311 if (Lex.getKind() == lltok::APSInt)
3312 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3314 if (Lex.getKind() != lltok::DwarfVirtuality)
3315 return TokError("expected DWARF virtuality code");
3317 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3319 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3320 Lex.getStrVal() + "'");
3321 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3322 Result.assign(Virtuality);
3328 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3329 if (Lex.getKind() == lltok::APSInt)
3330 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3332 if (Lex.getKind() != lltok::DwarfLang)
3333 return TokError("expected DWARF language");
3335 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3337 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3339 assert(Lang <= Result.Max && "Expected valid DWARF language");
3340 Result.assign(Lang);
3346 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3347 DwarfAttEncodingField &Result) {
3348 if (Lex.getKind() == lltok::APSInt)
3349 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3351 if (Lex.getKind() != lltok::DwarfAttEncoding)
3352 return TokError("expected DWARF type attribute encoding");
3354 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3356 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3357 Lex.getStrVal() + "'");
3358 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3359 Result.assign(Encoding);
3366 /// ::= DIFlagVector
3367 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3369 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3370 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3372 // Parser for a single flag.
3373 auto parseFlag = [&](unsigned &Val) {
3374 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3375 return ParseUInt32(Val);
3377 if (Lex.getKind() != lltok::DIFlag)
3378 return TokError("expected debug info flag");
3380 Val = DINode::getFlag(Lex.getStrVal());
3382 return TokError(Twine("invalid debug info flag flag '") +
3383 Lex.getStrVal() + "'");
3388 // Parse the flags and combine them together.
3389 unsigned Combined = 0;
3395 } while (EatIfPresent(lltok::bar));
3397 Result.assign(Combined);
3402 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3403 MDSignedField &Result) {
3404 if (Lex.getKind() != lltok::APSInt)
3405 return TokError("expected signed integer");
3407 auto &S = Lex.getAPSIntVal();
3409 return TokError("value for '" + Name + "' too small, limit is " +
3412 return TokError("value for '" + Name + "' too large, limit is " +
3414 Result.assign(S.getExtValue());
3415 assert(Result.Val >= Result.Min && "Expected value in range");
3416 assert(Result.Val <= Result.Max && "Expected value in range");
3422 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3423 switch (Lex.getKind()) {
3425 return TokError("expected 'true' or 'false'");
3426 case lltok::kw_true:
3427 Result.assign(true);
3429 case lltok::kw_false:
3430 Result.assign(false);
3438 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3439 if (Lex.getKind() == lltok::kw_null) {
3440 if (!Result.AllowNull)
3441 return TokError("'" + Name + "' cannot be null");
3443 Result.assign(nullptr);
3448 if (ParseMetadata(MD, nullptr))
3456 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3458 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3461 Result.assign(cast<ConstantAsMetadata>(MD));
3466 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3467 LocTy ValueLoc = Lex.getLoc();
3469 if (ParseStringConstant(S))
3472 if (!Result.AllowEmpty && S.empty())
3473 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3475 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3480 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3481 SmallVector<Metadata *, 4> MDs;
3482 if (ParseMDNodeVector(MDs))
3485 Result.assign(std::move(MDs));
3489 } // end namespace llvm
3491 template <class ParserTy>
3492 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3494 if (Lex.getKind() != lltok::LabelStr)
3495 return TokError("expected field label here");
3499 } while (EatIfPresent(lltok::comma));
3504 template <class ParserTy>
3505 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3506 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3509 if (ParseToken(lltok::lparen, "expected '(' here"))
3511 if (Lex.getKind() != lltok::rparen)
3512 if (ParseMDFieldsImplBody(parseField))
3515 ClosingLoc = Lex.getLoc();
3516 return ParseToken(lltok::rparen, "expected ')' here");
3519 template <class FieldTy>
3520 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3522 return TokError("field '" + Name + "' cannot be specified more than once");
3524 LocTy Loc = Lex.getLoc();
3526 return ParseMDField(Loc, Name, Result);
3529 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3530 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3532 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3533 if (Lex.getStrVal() == #CLASS) \
3534 return Parse##CLASS(N, IsDistinct);
3535 #include "llvm/IR/Metadata.def"
3537 return TokError("expected metadata type");
3540 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3541 #define NOP_FIELD(NAME, TYPE, INIT)
3542 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3544 return Error(ClosingLoc, "missing required field '" #NAME "'");
3545 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3546 if (Lex.getStrVal() == #NAME) \
3547 return ParseMDField(#NAME, NAME);
3548 #define PARSE_MD_FIELDS() \
3549 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3552 if (ParseMDFieldsImpl([&]() -> bool { \
3553 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3554 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3557 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3559 #define GET_OR_DISTINCT(CLASS, ARGS) \
3560 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3562 /// ParseDILocationFields:
3563 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3564 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3565 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3566 OPTIONAL(line, LineField, ); \
3567 OPTIONAL(column, ColumnField, ); \
3568 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3569 OPTIONAL(inlinedAt, MDField, );
3571 #undef VISIT_MD_FIELDS
3573 Result = GET_OR_DISTINCT(
3574 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3578 /// ParseGenericDINode:
3579 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3580 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3581 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3582 REQUIRED(tag, DwarfTagField, ); \
3583 OPTIONAL(header, MDStringField, ); \
3584 OPTIONAL(operands, MDFieldList, );
3586 #undef VISIT_MD_FIELDS
3588 Result = GET_OR_DISTINCT(GenericDINode,
3589 (Context, tag.Val, header.Val, operands.Val));
3593 /// ParseDISubrange:
3594 /// ::= !DISubrange(count: 30, lowerBound: 2)
3595 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3596 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3597 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3598 OPTIONAL(lowerBound, MDSignedField, );
3600 #undef VISIT_MD_FIELDS
3602 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3606 /// ParseDIEnumerator:
3607 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3608 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3609 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3610 REQUIRED(name, MDStringField, ); \
3611 REQUIRED(value, MDSignedField, );
3613 #undef VISIT_MD_FIELDS
3615 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3619 /// ParseDIBasicType:
3620 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3621 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3622 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3623 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3624 OPTIONAL(name, MDStringField, ); \
3625 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3626 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3627 OPTIONAL(encoding, DwarfAttEncodingField, );
3629 #undef VISIT_MD_FIELDS
3631 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3632 align.Val, encoding.Val));
3636 /// ParseDIDerivedType:
3637 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3638 /// line: 7, scope: !1, baseType: !2, size: 32,
3639 /// align: 32, offset: 0, flags: 0, extraData: !3)
3640 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3641 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3642 REQUIRED(tag, DwarfTagField, ); \
3643 OPTIONAL(name, MDStringField, ); \
3644 OPTIONAL(file, MDField, ); \
3645 OPTIONAL(line, LineField, ); \
3646 OPTIONAL(scope, MDField, ); \
3647 REQUIRED(baseType, MDField, ); \
3648 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3649 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3650 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3651 OPTIONAL(flags, DIFlagField, ); \
3652 OPTIONAL(extraData, MDField, );
3654 #undef VISIT_MD_FIELDS
3656 Result = GET_OR_DISTINCT(DIDerivedType,
3657 (Context, tag.Val, name.Val, file.Val, line.Val,
3658 scope.Val, baseType.Val, size.Val, align.Val,
3659 offset.Val, flags.Val, extraData.Val));
3663 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3664 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3665 REQUIRED(tag, DwarfTagField, ); \
3666 OPTIONAL(name, MDStringField, ); \
3667 OPTIONAL(file, MDField, ); \
3668 OPTIONAL(line, LineField, ); \
3669 OPTIONAL(scope, MDField, ); \
3670 OPTIONAL(baseType, MDField, ); \
3671 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3672 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3673 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3674 OPTIONAL(flags, DIFlagField, ); \
3675 OPTIONAL(elements, MDField, ); \
3676 OPTIONAL(runtimeLang, DwarfLangField, ); \
3677 OPTIONAL(vtableHolder, MDField, ); \
3678 OPTIONAL(templateParams, MDField, ); \
3679 OPTIONAL(identifier, MDStringField, );
3681 #undef VISIT_MD_FIELDS
3683 Result = GET_OR_DISTINCT(
3685 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3686 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3687 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3691 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3692 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3693 OPTIONAL(flags, DIFlagField, ); \
3694 REQUIRED(types, MDField, );
3696 #undef VISIT_MD_FIELDS
3698 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3702 /// ParseDIFileType:
3703 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3704 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3705 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3706 REQUIRED(filename, MDStringField, ); \
3707 REQUIRED(directory, MDStringField, );
3709 #undef VISIT_MD_FIELDS
3711 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3715 /// ParseDICompileUnit:
3716 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3717 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3718 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3719 /// enums: !1, retainedTypes: !2, subprograms: !3,
3720 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3721 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3723 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3725 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3726 REQUIRED(language, DwarfLangField, ); \
3727 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3728 OPTIONAL(producer, MDStringField, ); \
3729 OPTIONAL(isOptimized, MDBoolField, ); \
3730 OPTIONAL(flags, MDStringField, ); \
3731 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3732 OPTIONAL(splitDebugFilename, MDStringField, ); \
3733 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3734 OPTIONAL(enums, MDField, ); \
3735 OPTIONAL(retainedTypes, MDField, ); \
3736 OPTIONAL(subprograms, MDField, ); \
3737 OPTIONAL(globals, MDField, ); \
3738 OPTIONAL(imports, MDField, ); \
3739 OPTIONAL(dwoId, MDUnsignedField, );
3741 #undef VISIT_MD_FIELDS
3743 Result = DICompileUnit::getDistinct(
3744 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
3745 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
3746 retainedTypes.Val, subprograms.Val, globals.Val, imports.Val, dwoId.Val);
3750 /// ParseDISubprogram:
3751 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3752 /// file: !1, line: 7, type: !2, isLocal: false,
3753 /// isDefinition: true, scopeLine: 8, containingType: !3,
3754 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3755 /// virtualIndex: 10, flags: 11,
3756 /// isOptimized: false, function: void ()* @_Z3foov,
3757 /// templateParams: !4, declaration: !5, variables: !6)
3758 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3759 auto Loc = Lex.getLoc();
3760 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3761 OPTIONAL(scope, MDField, ); \
3762 OPTIONAL(name, MDStringField, ); \
3763 OPTIONAL(linkageName, MDStringField, ); \
3764 OPTIONAL(file, MDField, ); \
3765 OPTIONAL(line, LineField, ); \
3766 OPTIONAL(type, MDField, ); \
3767 OPTIONAL(isLocal, MDBoolField, ); \
3768 OPTIONAL(isDefinition, MDBoolField, (true)); \
3769 OPTIONAL(scopeLine, LineField, ); \
3770 OPTIONAL(containingType, MDField, ); \
3771 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3772 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3773 OPTIONAL(flags, DIFlagField, ); \
3774 OPTIONAL(isOptimized, MDBoolField, ); \
3775 OPTIONAL(function, MDConstant, ); \
3776 OPTIONAL(templateParams, MDField, ); \
3777 OPTIONAL(declaration, MDField, ); \
3778 OPTIONAL(variables, MDField, );
3780 #undef VISIT_MD_FIELDS
3782 if (isDefinition.Val && !IsDistinct)
3785 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
3787 Result = GET_OR_DISTINCT(
3788 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3789 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3790 scopeLine.Val, containingType.Val, virtuality.Val,
3791 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3792 templateParams.Val, declaration.Val, variables.Val));
3796 /// ParseDILexicalBlock:
3797 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3798 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3799 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3800 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3801 OPTIONAL(file, MDField, ); \
3802 OPTIONAL(line, LineField, ); \
3803 OPTIONAL(column, ColumnField, );
3805 #undef VISIT_MD_FIELDS
3807 Result = GET_OR_DISTINCT(
3808 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3812 /// ParseDILexicalBlockFile:
3813 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3814 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3815 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3816 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3817 OPTIONAL(file, MDField, ); \
3818 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3820 #undef VISIT_MD_FIELDS
3822 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3823 (Context, scope.Val, file.Val, discriminator.Val));
3827 /// ParseDINamespace:
3828 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3829 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3830 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3831 REQUIRED(scope, MDField, ); \
3832 OPTIONAL(file, MDField, ); \
3833 OPTIONAL(name, MDStringField, ); \
3834 OPTIONAL(line, LineField, );
3836 #undef VISIT_MD_FIELDS
3838 Result = GET_OR_DISTINCT(DINamespace,
3839 (Context, scope.Val, file.Val, name.Val, line.Val));
3844 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3845 /// includePath: "/usr/include", isysroot: "/")
3846 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3847 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3848 REQUIRED(scope, MDField, ); \
3849 REQUIRED(name, MDStringField, ); \
3850 OPTIONAL(configMacros, MDStringField, ); \
3851 OPTIONAL(includePath, MDStringField, ); \
3852 OPTIONAL(isysroot, MDStringField, );
3854 #undef VISIT_MD_FIELDS
3856 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3857 configMacros.Val, includePath.Val, isysroot.Val));
3861 /// ParseDITemplateTypeParameter:
3862 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3863 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3864 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3865 OPTIONAL(name, MDStringField, ); \
3866 REQUIRED(type, MDField, );
3868 #undef VISIT_MD_FIELDS
3871 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3875 /// ParseDITemplateValueParameter:
3876 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3877 /// name: "V", type: !1, value: i32 7)
3878 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3879 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3880 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3881 OPTIONAL(name, MDStringField, ); \
3882 OPTIONAL(type, MDField, ); \
3883 REQUIRED(value, MDField, );
3885 #undef VISIT_MD_FIELDS
3887 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3888 (Context, tag.Val, name.Val, type.Val, value.Val));
3892 /// ParseDIGlobalVariable:
3893 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3894 /// file: !1, line: 7, type: !2, isLocal: false,
3895 /// isDefinition: true, variable: i32* @foo,
3896 /// declaration: !3)
3897 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3898 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3899 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3900 OPTIONAL(scope, MDField, ); \
3901 OPTIONAL(linkageName, MDStringField, ); \
3902 OPTIONAL(file, MDField, ); \
3903 OPTIONAL(line, LineField, ); \
3904 OPTIONAL(type, MDField, ); \
3905 OPTIONAL(isLocal, MDBoolField, ); \
3906 OPTIONAL(isDefinition, MDBoolField, (true)); \
3907 OPTIONAL(variable, MDConstant, ); \
3908 OPTIONAL(declaration, MDField, );
3910 #undef VISIT_MD_FIELDS
3912 Result = GET_OR_DISTINCT(DIGlobalVariable,
3913 (Context, scope.Val, name.Val, linkageName.Val,
3914 file.Val, line.Val, type.Val, isLocal.Val,
3915 isDefinition.Val, variable.Val, declaration.Val));
3919 /// ParseDILocalVariable:
3920 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
3921 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3922 /// ::= !DILocalVariable(scope: !0, name: "foo",
3923 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3924 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3925 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3926 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3927 OPTIONAL(name, MDStringField, ); \
3928 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3929 OPTIONAL(file, MDField, ); \
3930 OPTIONAL(line, LineField, ); \
3931 OPTIONAL(type, MDField, ); \
3932 OPTIONAL(flags, DIFlagField, );
3934 #undef VISIT_MD_FIELDS
3936 Result = GET_OR_DISTINCT(DILocalVariable,
3937 (Context, scope.Val, name.Val, file.Val, line.Val,
3938 type.Val, arg.Val, flags.Val));
3942 /// ParseDIExpression:
3943 /// ::= !DIExpression(0, 7, -1)
3944 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3945 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3948 if (ParseToken(lltok::lparen, "expected '(' here"))
3951 SmallVector<uint64_t, 8> Elements;
3952 if (Lex.getKind() != lltok::rparen)
3954 if (Lex.getKind() == lltok::DwarfOp) {
3955 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3957 Elements.push_back(Op);
3960 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3963 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3964 return TokError("expected unsigned integer");
3966 auto &U = Lex.getAPSIntVal();
3967 if (U.ugt(UINT64_MAX))
3968 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3969 Elements.push_back(U.getZExtValue());
3971 } while (EatIfPresent(lltok::comma));
3973 if (ParseToken(lltok::rparen, "expected ')' here"))
3976 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3980 /// ParseDIObjCProperty:
3981 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3982 /// getter: "getFoo", attributes: 7, type: !2)
3983 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3984 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3985 OPTIONAL(name, MDStringField, ); \
3986 OPTIONAL(file, MDField, ); \
3987 OPTIONAL(line, LineField, ); \
3988 OPTIONAL(setter, MDStringField, ); \
3989 OPTIONAL(getter, MDStringField, ); \
3990 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3991 OPTIONAL(type, MDField, );
3993 #undef VISIT_MD_FIELDS
3995 Result = GET_OR_DISTINCT(DIObjCProperty,
3996 (Context, name.Val, file.Val, line.Val, setter.Val,
3997 getter.Val, attributes.Val, type.Val));
4001 /// ParseDIImportedEntity:
4002 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4003 /// line: 7, name: "foo")
4004 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4005 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4006 REQUIRED(tag, DwarfTagField, ); \
4007 REQUIRED(scope, MDField, ); \
4008 OPTIONAL(entity, MDField, ); \
4009 OPTIONAL(line, LineField, ); \
4010 OPTIONAL(name, MDStringField, );
4012 #undef VISIT_MD_FIELDS
4014 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4015 entity.Val, line.Val, name.Val));
4019 #undef PARSE_MD_FIELD
4021 #undef REQUIRE_FIELD
4022 #undef DECLARE_FIELD
4024 /// ParseMetadataAsValue
4025 /// ::= metadata i32 %local
4026 /// ::= metadata i32 @global
4027 /// ::= metadata i32 7
4029 /// ::= metadata !{...}
4030 /// ::= metadata !"string"
4031 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4032 // Note: the type 'metadata' has already been parsed.
4034 if (ParseMetadata(MD, &PFS))
4037 V = MetadataAsValue::get(Context, MD);
4041 /// ParseValueAsMetadata
4045 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4046 PerFunctionState *PFS) {
4049 if (ParseType(Ty, TypeMsg, Loc))
4051 if (Ty->isMetadataTy())
4052 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4055 if (ParseValue(Ty, V, PFS))
4058 MD = ValueAsMetadata::get(V);
4069 /// ::= !DILocation(...)
4070 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4071 if (Lex.getKind() == lltok::MetadataVar) {
4073 if (ParseSpecializedMDNode(N))
4081 if (Lex.getKind() != lltok::exclaim)
4082 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4085 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4089 // ::= '!' STRINGCONSTANT
4090 if (Lex.getKind() == lltok::StringConstant) {
4092 if (ParseMDString(S))
4102 if (ParseMDNodeTail(N))
4109 //===----------------------------------------------------------------------===//
4110 // Function Parsing.
4111 //===----------------------------------------------------------------------===//
4113 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4114 PerFunctionState *PFS,
4115 OperatorConstraint OC) {
4116 if (Ty->isFunctionTy())
4117 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4119 if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
4122 return Error(ID.Loc, "Catchpad value required in this position");
4124 return Error(ID.Loc, "Cleanuppad value required in this position");
4126 llvm_unreachable("Unexpected constraint kind");
4131 case ValID::t_LocalID:
4132 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4133 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
4134 return V == nullptr;
4135 case ValID::t_LocalName:
4136 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4137 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
4138 return V == nullptr;
4139 case ValID::t_InlineAsm: {
4140 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4141 return Error(ID.Loc, "invalid type for inline asm constraint string");
4142 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4143 (ID.UIntVal >> 1) & 1,
4144 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4147 case ValID::t_GlobalName:
4148 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4149 return V == nullptr;
4150 case ValID::t_GlobalID:
4151 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4152 return V == nullptr;
4153 case ValID::t_APSInt:
4154 if (!Ty->isIntegerTy())
4155 return Error(ID.Loc, "integer constant must have integer type");
4156 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4157 V = ConstantInt::get(Context, ID.APSIntVal);
4159 case ValID::t_APFloat:
4160 if (!Ty->isFloatingPointTy() ||
4161 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4162 return Error(ID.Loc, "floating point constant invalid for type");
4164 // The lexer has no type info, so builds all half, float, and double FP
4165 // constants as double. Fix this here. Long double does not need this.
4166 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4169 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4171 else if (Ty->isFloatTy())
4172 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4175 V = ConstantFP::get(Context, ID.APFloatVal);
4177 if (V->getType() != Ty)
4178 return Error(ID.Loc, "floating point constant does not have type '" +
4179 getTypeString(Ty) + "'");
4183 if (!Ty->isPointerTy())
4184 return Error(ID.Loc, "null must be a pointer type");
4185 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4187 case ValID::t_Undef:
4188 // FIXME: LabelTy should not be a first-class type.
4189 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4190 return Error(ID.Loc, "invalid type for undef constant");
4191 V = UndefValue::get(Ty);
4193 case ValID::t_EmptyArray:
4194 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4195 return Error(ID.Loc, "invalid empty array initializer");
4196 V = UndefValue::get(Ty);
4199 // FIXME: LabelTy should not be a first-class type.
4200 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4201 return Error(ID.Loc, "invalid type for null constant");
4202 V = Constant::getNullValue(Ty);
4204 case ValID::t_Constant:
4205 if (ID.ConstantVal->getType() != Ty)
4206 return Error(ID.Loc, "constant expression type mismatch");
4210 case ValID::t_ConstantStruct:
4211 case ValID::t_PackedConstantStruct:
4212 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4213 if (ST->getNumElements() != ID.UIntVal)
4214 return Error(ID.Loc,
4215 "initializer with struct type has wrong # elements");
4216 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4217 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4219 // Verify that the elements are compatible with the structtype.
4220 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4221 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4222 return Error(ID.Loc, "element " + Twine(i) +
4223 " of struct initializer doesn't match struct element type");
4225 V = ConstantStruct::get(
4226 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4228 return Error(ID.Loc, "constant expression type mismatch");
4231 llvm_unreachable("Invalid ValID");
4234 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4237 auto Loc = Lex.getLoc();
4238 if (ParseValID(ID, /*PFS=*/nullptr))
4241 case ValID::t_APSInt:
4242 case ValID::t_APFloat:
4243 case ValID::t_Undef:
4244 case ValID::t_Constant:
4245 case ValID::t_ConstantStruct:
4246 case ValID::t_PackedConstantStruct: {
4248 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4250 assert(isa<Constant>(V) && "Expected a constant value");
4251 C = cast<Constant>(V);
4255 return Error(Loc, "expected a constant value");
4259 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
4260 OperatorConstraint OC) {
4263 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
4266 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4268 return ParseType(Ty) ||
4269 ParseValue(Ty, V, PFS);
4272 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4273 PerFunctionState &PFS) {
4276 if (ParseTypeAndValue(V, PFS)) return true;
4277 if (!isa<BasicBlock>(V))
4278 return Error(Loc, "expected a basic block");
4279 BB = cast<BasicBlock>(V);
4285 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4286 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4287 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4288 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4289 // Parse the linkage.
4290 LocTy LinkageLoc = Lex.getLoc();
4293 unsigned Visibility;
4294 unsigned DLLStorageClass;
4295 AttrBuilder RetAttrs;
4297 Type *RetType = nullptr;
4298 LocTy RetTypeLoc = Lex.getLoc();
4299 if (ParseOptionalLinkage(Linkage) ||
4300 ParseOptionalVisibility(Visibility) ||
4301 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4302 ParseOptionalCallingConv(CC) ||
4303 ParseOptionalReturnAttrs(RetAttrs) ||
4304 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4307 // Verify that the linkage is ok.
4308 switch ((GlobalValue::LinkageTypes)Linkage) {
4309 case GlobalValue::ExternalLinkage:
4310 break; // always ok.
4311 case GlobalValue::ExternalWeakLinkage:
4313 return Error(LinkageLoc, "invalid linkage for function definition");
4315 case GlobalValue::PrivateLinkage:
4316 case GlobalValue::InternalLinkage:
4317 case GlobalValue::AvailableExternallyLinkage:
4318 case GlobalValue::LinkOnceAnyLinkage:
4319 case GlobalValue::LinkOnceODRLinkage:
4320 case GlobalValue::WeakAnyLinkage:
4321 case GlobalValue::WeakODRLinkage:
4323 return Error(LinkageLoc, "invalid linkage for function declaration");
4325 case GlobalValue::AppendingLinkage:
4326 case GlobalValue::CommonLinkage:
4327 return Error(LinkageLoc, "invalid function linkage type");
4330 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4331 return Error(LinkageLoc,
4332 "symbol with local linkage must have default visibility");
4334 if (!FunctionType::isValidReturnType(RetType))
4335 return Error(RetTypeLoc, "invalid function return type");
4337 LocTy NameLoc = Lex.getLoc();
4339 std::string FunctionName;
4340 if (Lex.getKind() == lltok::GlobalVar) {
4341 FunctionName = Lex.getStrVal();
4342 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4343 unsigned NameID = Lex.getUIntVal();
4345 if (NameID != NumberedVals.size())
4346 return TokError("function expected to be numbered '%" +
4347 Twine(NumberedVals.size()) + "'");
4349 return TokError("expected function name");
4354 if (Lex.getKind() != lltok::lparen)
4355 return TokError("expected '(' in function argument list");
4357 SmallVector<ArgInfo, 8> ArgList;
4359 AttrBuilder FuncAttrs;
4360 std::vector<unsigned> FwdRefAttrGrps;
4362 std::string Section;
4366 LocTy UnnamedAddrLoc;
4367 Constant *Prefix = nullptr;
4368 Constant *Prologue = nullptr;
4369 Constant *PersonalityFn = nullptr;
4372 if (ParseArgumentList(ArgList, isVarArg) ||
4373 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4375 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4377 (EatIfPresent(lltok::kw_section) &&
4378 ParseStringConstant(Section)) ||
4379 parseOptionalComdat(FunctionName, C) ||
4380 ParseOptionalAlignment(Alignment) ||
4381 (EatIfPresent(lltok::kw_gc) &&
4382 ParseStringConstant(GC)) ||
4383 (EatIfPresent(lltok::kw_prefix) &&
4384 ParseGlobalTypeAndValue(Prefix)) ||
4385 (EatIfPresent(lltok::kw_prologue) &&
4386 ParseGlobalTypeAndValue(Prologue)) ||
4387 (EatIfPresent(lltok::kw_personality) &&
4388 ParseGlobalTypeAndValue(PersonalityFn)))
4391 if (FuncAttrs.contains(Attribute::Builtin))
4392 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4394 // If the alignment was parsed as an attribute, move to the alignment field.
4395 if (FuncAttrs.hasAlignmentAttr()) {
4396 Alignment = FuncAttrs.getAlignment();
4397 FuncAttrs.removeAttribute(Attribute::Alignment);
4400 // Okay, if we got here, the function is syntactically valid. Convert types
4401 // and do semantic checks.
4402 std::vector<Type*> ParamTypeList;
4403 SmallVector<AttributeSet, 8> Attrs;
4405 if (RetAttrs.hasAttributes())
4406 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4407 AttributeSet::ReturnIndex,
4410 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4411 ParamTypeList.push_back(ArgList[i].Ty);
4412 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4413 AttrBuilder B(ArgList[i].Attrs, i + 1);
4414 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4418 if (FuncAttrs.hasAttributes())
4419 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4420 AttributeSet::FunctionIndex,
4423 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4425 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4426 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4429 FunctionType::get(RetType, ParamTypeList, isVarArg);
4430 PointerType *PFT = PointerType::getUnqual(FT);
4433 if (!FunctionName.empty()) {
4434 // If this was a definition of a forward reference, remove the definition
4435 // from the forward reference table and fill in the forward ref.
4436 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4437 ForwardRefVals.find(FunctionName);
4438 if (FRVI != ForwardRefVals.end()) {
4439 Fn = M->getFunction(FunctionName);
4441 return Error(FRVI->second.second, "invalid forward reference to "
4442 "function as global value!");
4443 if (Fn->getType() != PFT)
4444 return Error(FRVI->second.second, "invalid forward reference to "
4445 "function '" + FunctionName + "' with wrong type!");
4447 ForwardRefVals.erase(FRVI);
4448 } else if ((Fn = M->getFunction(FunctionName))) {
4449 // Reject redefinitions.
4450 return Error(NameLoc, "invalid redefinition of function '" +
4451 FunctionName + "'");
4452 } else if (M->getNamedValue(FunctionName)) {
4453 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4457 // If this is a definition of a forward referenced function, make sure the
4459 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4460 = ForwardRefValIDs.find(NumberedVals.size());
4461 if (I != ForwardRefValIDs.end()) {
4462 Fn = cast<Function>(I->second.first);
4463 if (Fn->getType() != PFT)
4464 return Error(NameLoc, "type of definition and forward reference of '@" +
4465 Twine(NumberedVals.size()) + "' disagree");
4466 ForwardRefValIDs.erase(I);
4471 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4472 else // Move the forward-reference to the correct spot in the module.
4473 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4475 if (FunctionName.empty())
4476 NumberedVals.push_back(Fn);
4478 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4479 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4480 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4481 Fn->setCallingConv(CC);
4482 Fn->setAttributes(PAL);
4483 Fn->setUnnamedAddr(UnnamedAddr);
4484 Fn->setAlignment(Alignment);
4485 Fn->setSection(Section);
4487 Fn->setPersonalityFn(PersonalityFn);
4488 if (!GC.empty()) Fn->setGC(GC.c_str());
4489 Fn->setPrefixData(Prefix);
4490 Fn->setPrologueData(Prologue);
4491 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4493 // Add all of the arguments we parsed to the function.
4494 Function::arg_iterator ArgIt = Fn->arg_begin();
4495 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4496 // If the argument has a name, insert it into the argument symbol table.
4497 if (ArgList[i].Name.empty()) continue;
4499 // Set the name, if it conflicted, it will be auto-renamed.
4500 ArgIt->setName(ArgList[i].Name);
4502 if (ArgIt->getName() != ArgList[i].Name)
4503 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4504 ArgList[i].Name + "'");
4510 // Check the declaration has no block address forward references.
4512 if (FunctionName.empty()) {
4513 ID.Kind = ValID::t_GlobalID;
4514 ID.UIntVal = NumberedVals.size() - 1;
4516 ID.Kind = ValID::t_GlobalName;
4517 ID.StrVal = FunctionName;
4519 auto Blocks = ForwardRefBlockAddresses.find(ID);
4520 if (Blocks != ForwardRefBlockAddresses.end())
4521 return Error(Blocks->first.Loc,
4522 "cannot take blockaddress inside a declaration");
4526 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4528 if (FunctionNumber == -1) {
4529 ID.Kind = ValID::t_GlobalName;
4530 ID.StrVal = F.getName();
4532 ID.Kind = ValID::t_GlobalID;
4533 ID.UIntVal = FunctionNumber;
4536 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4537 if (Blocks == P.ForwardRefBlockAddresses.end())
4540 for (const auto &I : Blocks->second) {
4541 const ValID &BBID = I.first;
4542 GlobalValue *GV = I.second;
4544 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4545 "Expected local id or name");
4547 if (BBID.Kind == ValID::t_LocalName)
4548 BB = GetBB(BBID.StrVal, BBID.Loc);
4550 BB = GetBB(BBID.UIntVal, BBID.Loc);
4552 return P.Error(BBID.Loc, "referenced value is not a basic block");
4554 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4555 GV->eraseFromParent();
4558 P.ForwardRefBlockAddresses.erase(Blocks);
4562 /// ParseFunctionBody
4563 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4564 bool LLParser::ParseFunctionBody(Function &Fn) {
4565 if (Lex.getKind() != lltok::lbrace)
4566 return TokError("expected '{' in function body");
4567 Lex.Lex(); // eat the {.
4569 int FunctionNumber = -1;
4570 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4572 PerFunctionState PFS(*this, Fn, FunctionNumber);
4574 // Resolve block addresses and allow basic blocks to be forward-declared
4575 // within this function.
4576 if (PFS.resolveForwardRefBlockAddresses())
4578 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4580 // We need at least one basic block.
4581 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4582 return TokError("function body requires at least one basic block");
4584 while (Lex.getKind() != lltok::rbrace &&
4585 Lex.getKind() != lltok::kw_uselistorder)
4586 if (ParseBasicBlock(PFS)) return true;
4588 while (Lex.getKind() != lltok::rbrace)
4589 if (ParseUseListOrder(&PFS))
4595 // Verify function is ok.
4596 return PFS.FinishFunction();
4600 /// ::= LabelStr? Instruction*
4601 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4602 // If this basic block starts out with a name, remember it.
4604 LocTy NameLoc = Lex.getLoc();
4605 if (Lex.getKind() == lltok::LabelStr) {
4606 Name = Lex.getStrVal();
4610 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4612 return Error(NameLoc,
4613 "unable to create block named '" + Name + "'");
4615 std::string NameStr;
4617 // Parse the instructions in this block until we get a terminator.
4620 // This instruction may have three possibilities for a name: a) none
4621 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4622 LocTy NameLoc = Lex.getLoc();
4626 if (Lex.getKind() == lltok::LocalVarID) {
4627 NameID = Lex.getUIntVal();
4629 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4631 } else if (Lex.getKind() == lltok::LocalVar) {
4632 NameStr = Lex.getStrVal();
4634 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4638 switch (ParseInstruction(Inst, BB, PFS)) {
4639 default: llvm_unreachable("Unknown ParseInstruction result!");
4640 case InstError: return true;
4642 BB->getInstList().push_back(Inst);
4644 // With a normal result, we check to see if the instruction is followed by
4645 // a comma and metadata.
4646 if (EatIfPresent(lltok::comma))
4647 if (ParseInstructionMetadata(*Inst))
4650 case InstExtraComma:
4651 BB->getInstList().push_back(Inst);
4653 // If the instruction parser ate an extra comma at the end of it, it
4654 // *must* be followed by metadata.
4655 if (ParseInstructionMetadata(*Inst))
4660 // Set the name on the instruction.
4661 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4662 } while (!isa<TerminatorInst>(Inst));
4667 //===----------------------------------------------------------------------===//
4668 // Instruction Parsing.
4669 //===----------------------------------------------------------------------===//
4671 /// ParseInstruction - Parse one of the many different instructions.
4673 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4674 PerFunctionState &PFS) {
4675 lltok::Kind Token = Lex.getKind();
4676 if (Token == lltok::Eof)
4677 return TokError("found end of file when expecting more instructions");
4678 LocTy Loc = Lex.getLoc();
4679 unsigned KeywordVal = Lex.getUIntVal();
4680 Lex.Lex(); // Eat the keyword.
4683 default: return Error(Loc, "expected instruction opcode");
4684 // Terminator Instructions.
4685 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4686 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4687 case lltok::kw_br: return ParseBr(Inst, PFS);
4688 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4689 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4690 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4691 case lltok::kw_resume: return ParseResume(Inst, PFS);
4692 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4693 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4694 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4695 case lltok::kw_terminatepad: return ParseTerminatePad(Inst, PFS);
4696 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4697 case lltok::kw_catchendpad: return ParseCatchEndPad(Inst, PFS);
4698 case lltok::kw_cleanupendpad: return ParseCleanupEndPad(Inst, PFS);
4699 // Binary Operators.
4703 case lltok::kw_shl: {
4704 bool NUW = EatIfPresent(lltok::kw_nuw);
4705 bool NSW = EatIfPresent(lltok::kw_nsw);
4706 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4708 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4710 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4711 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4714 case lltok::kw_fadd:
4715 case lltok::kw_fsub:
4716 case lltok::kw_fmul:
4717 case lltok::kw_fdiv:
4718 case lltok::kw_frem: {
4719 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4720 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4724 Inst->setFastMathFlags(FMF);
4728 case lltok::kw_sdiv:
4729 case lltok::kw_udiv:
4730 case lltok::kw_lshr:
4731 case lltok::kw_ashr: {
4732 bool Exact = EatIfPresent(lltok::kw_exact);
4734 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4735 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4739 case lltok::kw_urem:
4740 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4743 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4744 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4745 case lltok::kw_fcmp: {
4746 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4747 int Res = ParseCompare(Inst, PFS, KeywordVal);
4751 Inst->setFastMathFlags(FMF);
4756 case lltok::kw_trunc:
4757 case lltok::kw_zext:
4758 case lltok::kw_sext:
4759 case lltok::kw_fptrunc:
4760 case lltok::kw_fpext:
4761 case lltok::kw_bitcast:
4762 case lltok::kw_addrspacecast:
4763 case lltok::kw_uitofp:
4764 case lltok::kw_sitofp:
4765 case lltok::kw_fptoui:
4766 case lltok::kw_fptosi:
4767 case lltok::kw_inttoptr:
4768 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4770 case lltok::kw_select: return ParseSelect(Inst, PFS);
4771 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4772 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4773 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4774 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4775 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4776 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4778 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4779 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4780 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4782 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4783 case lltok::kw_load: return ParseLoad(Inst, PFS);
4784 case lltok::kw_store: return ParseStore(Inst, PFS);
4785 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4786 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4787 case lltok::kw_fence: return ParseFence(Inst, PFS);
4788 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4789 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4790 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4794 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4795 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4796 if (Opc == Instruction::FCmp) {
4797 switch (Lex.getKind()) {
4798 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4799 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4800 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4801 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4802 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4803 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4804 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4805 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4806 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4807 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4808 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4809 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4810 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4811 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4812 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4813 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4814 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4817 switch (Lex.getKind()) {
4818 default: return TokError("expected icmp predicate (e.g. 'eq')");
4819 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4820 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4821 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4822 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4823 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4824 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4825 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4826 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4827 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4828 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4835 //===----------------------------------------------------------------------===//
4836 // Terminator Instructions.
4837 //===----------------------------------------------------------------------===//
4839 /// ParseRet - Parse a return instruction.
4840 /// ::= 'ret' void (',' !dbg, !1)*
4841 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4842 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4843 PerFunctionState &PFS) {
4844 SMLoc TypeLoc = Lex.getLoc();
4846 if (ParseType(Ty, true /*void allowed*/)) return true;
4848 Type *ResType = PFS.getFunction().getReturnType();
4850 if (Ty->isVoidTy()) {
4851 if (!ResType->isVoidTy())
4852 return Error(TypeLoc, "value doesn't match function result type '" +
4853 getTypeString(ResType) + "'");
4855 Inst = ReturnInst::Create(Context);
4860 if (ParseValue(Ty, RV, PFS)) return true;
4862 if (ResType != RV->getType())
4863 return Error(TypeLoc, "value doesn't match function result type '" +
4864 getTypeString(ResType) + "'");
4866 Inst = ReturnInst::Create(Context, RV);
4872 /// ::= 'br' TypeAndValue
4873 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4874 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4877 BasicBlock *Op1, *Op2;
4878 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4880 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4881 Inst = BranchInst::Create(BB);
4885 if (Op0->getType() != Type::getInt1Ty(Context))
4886 return Error(Loc, "branch condition must have 'i1' type");
4888 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4889 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4890 ParseToken(lltok::comma, "expected ',' after true destination") ||
4891 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4894 Inst = BranchInst::Create(Op1, Op2, Op0);
4900 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4902 /// ::= (TypeAndValue ',' TypeAndValue)*
4903 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4904 LocTy CondLoc, BBLoc;
4906 BasicBlock *DefaultBB;
4907 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4908 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4909 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4910 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4913 if (!Cond->getType()->isIntegerTy())
4914 return Error(CondLoc, "switch condition must have integer type");
4916 // Parse the jump table pairs.
4917 SmallPtrSet<Value*, 32> SeenCases;
4918 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4919 while (Lex.getKind() != lltok::rsquare) {
4923 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4924 ParseToken(lltok::comma, "expected ',' after case value") ||
4925 ParseTypeAndBasicBlock(DestBB, PFS))
4928 if (!SeenCases.insert(Constant).second)
4929 return Error(CondLoc, "duplicate case value in switch");
4930 if (!isa<ConstantInt>(Constant))
4931 return Error(CondLoc, "case value is not a constant integer");
4933 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4936 Lex.Lex(); // Eat the ']'.
4938 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4939 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4940 SI->addCase(Table[i].first, Table[i].second);
4947 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4948 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4951 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4952 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4953 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4956 if (!Address->getType()->isPointerTy())
4957 return Error(AddrLoc, "indirectbr address must have pointer type");
4959 // Parse the destination list.
4960 SmallVector<BasicBlock*, 16> DestList;
4962 if (Lex.getKind() != lltok::rsquare) {
4964 if (ParseTypeAndBasicBlock(DestBB, PFS))
4966 DestList.push_back(DestBB);
4968 while (EatIfPresent(lltok::comma)) {
4969 if (ParseTypeAndBasicBlock(DestBB, PFS))
4971 DestList.push_back(DestBB);
4975 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4978 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4979 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4980 IBI->addDestination(DestList[i]);
4987 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4988 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4989 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4990 LocTy CallLoc = Lex.getLoc();
4991 AttrBuilder RetAttrs, FnAttrs;
4992 std::vector<unsigned> FwdRefAttrGrps;
4995 Type *RetType = nullptr;
4998 SmallVector<ParamInfo, 16> ArgList;
5000 BasicBlock *NormalBB, *UnwindBB;
5001 if (ParseOptionalCallingConv(CC) ||
5002 ParseOptionalReturnAttrs(RetAttrs) ||
5003 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5004 ParseValID(CalleeID) ||
5005 ParseParameterList(ArgList, PFS) ||
5006 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5008 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5009 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5010 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5011 ParseTypeAndBasicBlock(UnwindBB, PFS))
5014 // If RetType is a non-function pointer type, then this is the short syntax
5015 // for the call, which means that RetType is just the return type. Infer the
5016 // rest of the function argument types from the arguments that are present.
5017 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5019 // Pull out the types of all of the arguments...
5020 std::vector<Type*> ParamTypes;
5021 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5022 ParamTypes.push_back(ArgList[i].V->getType());
5024 if (!FunctionType::isValidReturnType(RetType))
5025 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5027 Ty = FunctionType::get(RetType, ParamTypes, false);
5032 // Look up the callee.
5034 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5037 // Set up the Attribute for the function.
5038 SmallVector<AttributeSet, 8> Attrs;
5039 if (RetAttrs.hasAttributes())
5040 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5041 AttributeSet::ReturnIndex,
5044 SmallVector<Value*, 8> Args;
5046 // Loop through FunctionType's arguments and ensure they are specified
5047 // correctly. Also, gather any parameter attributes.
5048 FunctionType::param_iterator I = Ty->param_begin();
5049 FunctionType::param_iterator E = Ty->param_end();
5050 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5051 Type *ExpectedTy = nullptr;
5054 } else if (!Ty->isVarArg()) {
5055 return Error(ArgList[i].Loc, "too many arguments specified");
5058 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5059 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5060 getTypeString(ExpectedTy) + "'");
5061 Args.push_back(ArgList[i].V);
5062 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5063 AttrBuilder B(ArgList[i].Attrs, i + 1);
5064 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5069 return Error(CallLoc, "not enough parameters specified for call");
5071 if (FnAttrs.hasAttributes()) {
5072 if (FnAttrs.hasAlignmentAttr())
5073 return Error(CallLoc, "invoke instructions may not have an alignment");
5075 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5076 AttributeSet::FunctionIndex,
5080 // Finish off the Attribute and check them
5081 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5083 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
5084 II->setCallingConv(CC);
5085 II->setAttributes(PAL);
5086 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5092 /// ::= 'resume' TypeAndValue
5093 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5094 Value *Exn; LocTy ExnLoc;
5095 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5098 ResumeInst *RI = ResumeInst::Create(Exn);
5103 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5104 PerFunctionState &PFS) {
5105 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5108 while (Lex.getKind() != lltok::rsquare) {
5109 // If this isn't the first argument, we need a comma.
5110 if (!Args.empty() &&
5111 ParseToken(lltok::comma, "expected ',' in argument list"))
5114 // Parse the argument.
5116 Type *ArgTy = nullptr;
5117 if (ParseType(ArgTy, ArgLoc))
5121 if (ArgTy->isMetadataTy()) {
5122 if (ParseMetadataAsValue(V, PFS))
5125 if (ParseValue(ArgTy, V, PFS))
5131 Lex.Lex(); // Lex the ']'.
5136 /// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
5137 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5138 Value *CleanupPad = nullptr;
5140 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5143 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5146 BasicBlock *UnwindBB = nullptr;
5147 if (Lex.getKind() == lltok::kw_to) {
5149 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5152 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5157 Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5162 /// ::= 'catchret' Value 'to' TypeAndValue
5163 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5164 Value *CatchPad = nullptr;
5166 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
5170 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5171 ParseTypeAndBasicBlock(BB, PFS))
5174 Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
5179 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5180 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5181 SmallVector<Value *, 8> Args;
5182 if (ParseExceptionArgs(Args, PFS))
5185 BasicBlock *NormalBB, *UnwindBB;
5186 if (ParseToken(lltok::kw_to, "expected 'to' in catchpad") ||
5187 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5188 ParseToken(lltok::kw_unwind, "expected 'unwind' in catchpad") ||
5189 ParseTypeAndBasicBlock(UnwindBB, PFS))
5192 Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
5196 /// ParseTerminatePad
5197 /// ::= 'terminatepad' ParamList 'to' TypeAndValue
5198 bool LLParser::ParseTerminatePad(Instruction *&Inst, PerFunctionState &PFS) {
5199 SmallVector<Value *, 8> Args;
5200 if (ParseExceptionArgs(Args, PFS))
5203 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminatepad"))
5206 BasicBlock *UnwindBB = nullptr;
5207 if (Lex.getKind() == lltok::kw_to) {
5209 if (ParseToken(lltok::kw_caller, "expected 'caller' in terminatepad"))
5212 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5217 Inst = TerminatePadInst::Create(Context, UnwindBB, Args);
5222 /// ::= 'cleanuppad' ParamList
5223 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5224 SmallVector<Value *, 8> Args;
5225 if (ParseExceptionArgs(Args, PFS))
5228 Inst = CleanupPadInst::Create(Context, Args);
5232 /// ParseCatchEndPad
5233 /// ::= 'catchendpad' unwind ('to' 'caller' | TypeAndValue)
5234 bool LLParser::ParseCatchEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5235 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5238 BasicBlock *UnwindBB = nullptr;
5239 if (Lex.getKind() == lltok::kw_to) {
5241 if (Lex.getKind() == lltok::kw_caller) {
5247 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5252 Inst = CatchEndPadInst::Create(Context, UnwindBB);
5256 /// ParseCatchEndPad
5257 /// ::= 'cleanupendpad' Value unwind ('to' 'caller' | TypeAndValue)
5258 bool LLParser::ParseCleanupEndPad(Instruction *&Inst, PerFunctionState &PFS) {
5259 Value *CleanupPad = nullptr;
5261 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
5264 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in catchendpad"))
5267 BasicBlock *UnwindBB = nullptr;
5268 if (Lex.getKind() == lltok::kw_to) {
5270 if (Lex.getKind() == lltok::kw_caller) {
5276 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5281 Inst = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
5285 //===----------------------------------------------------------------------===//
5286 // Binary Operators.
5287 //===----------------------------------------------------------------------===//
5290 /// ::= ArithmeticOps TypeAndValue ',' Value
5292 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5293 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5294 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5295 unsigned Opc, unsigned OperandType) {
5296 LocTy Loc; Value *LHS, *RHS;
5297 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5298 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5299 ParseValue(LHS->getType(), RHS, PFS))
5303 switch (OperandType) {
5304 default: llvm_unreachable("Unknown operand type!");
5305 case 0: // int or FP.
5306 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5307 LHS->getType()->isFPOrFPVectorTy();
5309 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5310 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5314 return Error(Loc, "invalid operand type for instruction");
5316 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5321 /// ::= ArithmeticOps TypeAndValue ',' Value {
5322 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5324 LocTy Loc; Value *LHS, *RHS;
5325 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5326 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5327 ParseValue(LHS->getType(), RHS, PFS))
5330 if (!LHS->getType()->isIntOrIntVectorTy())
5331 return Error(Loc,"instruction requires integer or integer vector operands");
5333 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5339 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5340 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5341 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5343 // Parse the integer/fp comparison predicate.
5347 if (ParseCmpPredicate(Pred, Opc) ||
5348 ParseTypeAndValue(LHS, Loc, PFS) ||
5349 ParseToken(lltok::comma, "expected ',' after compare value") ||
5350 ParseValue(LHS->getType(), RHS, PFS))
5353 if (Opc == Instruction::FCmp) {
5354 if (!LHS->getType()->isFPOrFPVectorTy())
5355 return Error(Loc, "fcmp requires floating point operands");
5356 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5358 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5359 if (!LHS->getType()->isIntOrIntVectorTy() &&
5360 !LHS->getType()->getScalarType()->isPointerTy())
5361 return Error(Loc, "icmp requires integer operands");
5362 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5367 //===----------------------------------------------------------------------===//
5368 // Other Instructions.
5369 //===----------------------------------------------------------------------===//
5373 /// ::= CastOpc TypeAndValue 'to' Type
5374 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5378 Type *DestTy = nullptr;
5379 if (ParseTypeAndValue(Op, Loc, PFS) ||
5380 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5384 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5385 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5386 return Error(Loc, "invalid cast opcode for cast from '" +
5387 getTypeString(Op->getType()) + "' to '" +
5388 getTypeString(DestTy) + "'");
5390 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5395 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5396 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5398 Value *Op0, *Op1, *Op2;
5399 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5400 ParseToken(lltok::comma, "expected ',' after select condition") ||
5401 ParseTypeAndValue(Op1, PFS) ||
5402 ParseToken(lltok::comma, "expected ',' after select value") ||
5403 ParseTypeAndValue(Op2, PFS))
5406 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5407 return Error(Loc, Reason);
5409 Inst = SelectInst::Create(Op0, Op1, Op2);
5414 /// ::= 'va_arg' TypeAndValue ',' Type
5415 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5417 Type *EltTy = nullptr;
5419 if (ParseTypeAndValue(Op, PFS) ||
5420 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5421 ParseType(EltTy, TypeLoc))
5424 if (!EltTy->isFirstClassType())
5425 return Error(TypeLoc, "va_arg requires operand with first class type");
5427 Inst = new VAArgInst(Op, EltTy);
5431 /// ParseExtractElement
5432 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5433 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5436 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5437 ParseToken(lltok::comma, "expected ',' after extract value") ||
5438 ParseTypeAndValue(Op1, PFS))
5441 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5442 return Error(Loc, "invalid extractelement operands");
5444 Inst = ExtractElementInst::Create(Op0, Op1);
5448 /// ParseInsertElement
5449 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5450 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5452 Value *Op0, *Op1, *Op2;
5453 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5454 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5455 ParseTypeAndValue(Op1, PFS) ||
5456 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5457 ParseTypeAndValue(Op2, PFS))
5460 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5461 return Error(Loc, "invalid insertelement operands");
5463 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5467 /// ParseShuffleVector
5468 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5469 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5471 Value *Op0, *Op1, *Op2;
5472 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5473 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5474 ParseTypeAndValue(Op1, PFS) ||
5475 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5476 ParseTypeAndValue(Op2, PFS))
5479 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5480 return Error(Loc, "invalid shufflevector operands");
5482 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5487 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5488 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5489 Type *Ty = nullptr; LocTy TypeLoc;
5492 if (ParseType(Ty, TypeLoc) ||
5493 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5494 ParseValue(Ty, Op0, PFS) ||
5495 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5496 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5497 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5500 bool AteExtraComma = false;
5501 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5503 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5505 if (!EatIfPresent(lltok::comma))
5508 if (Lex.getKind() == lltok::MetadataVar) {
5509 AteExtraComma = true;
5513 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5514 ParseValue(Ty, Op0, PFS) ||
5515 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5516 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5517 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5521 if (!Ty->isFirstClassType())
5522 return Error(TypeLoc, "phi node must have first class type");
5524 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5525 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5526 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5528 return AteExtraComma ? InstExtraComma : InstNormal;
5532 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5534 /// ::= 'catch' TypeAndValue
5536 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5537 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5538 Type *Ty = nullptr; LocTy TyLoc;
5540 if (ParseType(Ty, TyLoc))
5543 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5544 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5546 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5547 LandingPadInst::ClauseType CT;
5548 if (EatIfPresent(lltok::kw_catch))
5549 CT = LandingPadInst::Catch;
5550 else if (EatIfPresent(lltok::kw_filter))
5551 CT = LandingPadInst::Filter;
5553 return TokError("expected 'catch' or 'filter' clause type");
5557 if (ParseTypeAndValue(V, VLoc, PFS))
5560 // A 'catch' type expects a non-array constant. A filter clause expects an
5562 if (CT == LandingPadInst::Catch) {
5563 if (isa<ArrayType>(V->getType()))
5564 Error(VLoc, "'catch' clause has an invalid type");
5566 if (!isa<ArrayType>(V->getType()))
5567 Error(VLoc, "'filter' clause has an invalid type");
5570 Constant *CV = dyn_cast<Constant>(V);
5572 return Error(VLoc, "clause argument must be a constant");
5576 Inst = LP.release();
5581 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5582 /// ParameterList OptionalAttrs
5583 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5584 /// ParameterList OptionalAttrs
5585 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5586 /// ParameterList OptionalAttrs
5587 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5588 CallInst::TailCallKind TCK) {
5589 AttrBuilder RetAttrs, FnAttrs;
5590 std::vector<unsigned> FwdRefAttrGrps;
5593 Type *RetType = nullptr;
5596 SmallVector<ParamInfo, 16> ArgList;
5597 LocTy CallLoc = Lex.getLoc();
5599 if ((TCK != CallInst::TCK_None &&
5600 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5601 ParseOptionalCallingConv(CC) ||
5602 ParseOptionalReturnAttrs(RetAttrs) ||
5603 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5604 ParseValID(CalleeID) ||
5605 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5606 PFS.getFunction().isVarArg()) ||
5607 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5611 // If RetType is a non-function pointer type, then this is the short syntax
5612 // for the call, which means that RetType is just the return type. Infer the
5613 // rest of the function argument types from the arguments that are present.
5614 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5616 // Pull out the types of all of the arguments...
5617 std::vector<Type*> ParamTypes;
5618 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5619 ParamTypes.push_back(ArgList[i].V->getType());
5621 if (!FunctionType::isValidReturnType(RetType))
5622 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5624 Ty = FunctionType::get(RetType, ParamTypes, false);
5629 // Look up the callee.
5631 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5634 // Set up the Attribute for the function.
5635 SmallVector<AttributeSet, 8> Attrs;
5636 if (RetAttrs.hasAttributes())
5637 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5638 AttributeSet::ReturnIndex,
5641 SmallVector<Value*, 8> Args;
5643 // Loop through FunctionType's arguments and ensure they are specified
5644 // correctly. Also, gather any parameter attributes.
5645 FunctionType::param_iterator I = Ty->param_begin();
5646 FunctionType::param_iterator E = Ty->param_end();
5647 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5648 Type *ExpectedTy = nullptr;
5651 } else if (!Ty->isVarArg()) {
5652 return Error(ArgList[i].Loc, "too many arguments specified");
5655 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5656 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5657 getTypeString(ExpectedTy) + "'");
5658 Args.push_back(ArgList[i].V);
5659 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5660 AttrBuilder B(ArgList[i].Attrs, i + 1);
5661 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5666 return Error(CallLoc, "not enough parameters specified for call");
5668 if (FnAttrs.hasAttributes()) {
5669 if (FnAttrs.hasAlignmentAttr())
5670 return Error(CallLoc, "call instructions may not have an alignment");
5672 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5673 AttributeSet::FunctionIndex,
5677 // Finish off the Attribute and check them
5678 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5680 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5681 CI->setTailCallKind(TCK);
5682 CI->setCallingConv(CC);
5683 CI->setAttributes(PAL);
5684 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5689 //===----------------------------------------------------------------------===//
5690 // Memory Instructions.
5691 //===----------------------------------------------------------------------===//
5694 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5695 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5696 Value *Size = nullptr;
5697 LocTy SizeLoc, TyLoc;
5698 unsigned Alignment = 0;
5701 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5703 if (ParseType(Ty, TyLoc)) return true;
5705 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5706 return Error(TyLoc, "invalid type for alloca");
5708 bool AteExtraComma = false;
5709 if (EatIfPresent(lltok::comma)) {
5710 if (Lex.getKind() == lltok::kw_align) {
5711 if (ParseOptionalAlignment(Alignment)) return true;
5712 } else if (Lex.getKind() == lltok::MetadataVar) {
5713 AteExtraComma = true;
5715 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5716 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5721 if (Size && !Size->getType()->isIntegerTy())
5722 return Error(SizeLoc, "element count must have integer type");
5724 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5725 AI->setUsedWithInAlloca(IsInAlloca);
5727 return AteExtraComma ? InstExtraComma : InstNormal;
5731 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5732 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5733 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5734 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5735 Value *Val; LocTy Loc;
5736 unsigned Alignment = 0;
5737 bool AteExtraComma = false;
5738 bool isAtomic = false;
5739 AtomicOrdering Ordering = NotAtomic;
5740 SynchronizationScope Scope = CrossThread;
5742 if (Lex.getKind() == lltok::kw_atomic) {
5747 bool isVolatile = false;
5748 if (Lex.getKind() == lltok::kw_volatile) {
5754 LocTy ExplicitTypeLoc = Lex.getLoc();
5755 if (ParseType(Ty) ||
5756 ParseToken(lltok::comma, "expected comma after load's type") ||
5757 ParseTypeAndValue(Val, Loc, PFS) ||
5758 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5759 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5762 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5763 return Error(Loc, "load operand must be a pointer to a first class type");
5764 if (isAtomic && !Alignment)
5765 return Error(Loc, "atomic load must have explicit non-zero alignment");
5766 if (Ordering == Release || Ordering == AcquireRelease)
5767 return Error(Loc, "atomic load cannot use Release ordering");
5769 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5770 return Error(ExplicitTypeLoc,
5771 "explicit pointee type doesn't match operand's pointee type");
5773 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5774 return AteExtraComma ? InstExtraComma : InstNormal;
5779 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5780 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5781 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5782 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5783 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5784 unsigned Alignment = 0;
5785 bool AteExtraComma = false;
5786 bool isAtomic = false;
5787 AtomicOrdering Ordering = NotAtomic;
5788 SynchronizationScope Scope = CrossThread;
5790 if (Lex.getKind() == lltok::kw_atomic) {
5795 bool isVolatile = false;
5796 if (Lex.getKind() == lltok::kw_volatile) {
5801 if (ParseTypeAndValue(Val, Loc, PFS) ||
5802 ParseToken(lltok::comma, "expected ',' after store operand") ||
5803 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5804 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5805 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5808 if (!Ptr->getType()->isPointerTy())
5809 return Error(PtrLoc, "store operand must be a pointer");
5810 if (!Val->getType()->isFirstClassType())
5811 return Error(Loc, "store operand must be a first class value");
5812 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5813 return Error(Loc, "stored value and pointer type do not match");
5814 if (isAtomic && !Alignment)
5815 return Error(Loc, "atomic store must have explicit non-zero alignment");
5816 if (Ordering == Acquire || Ordering == AcquireRelease)
5817 return Error(Loc, "atomic store cannot use Acquire ordering");
5819 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5820 return AteExtraComma ? InstExtraComma : InstNormal;
5824 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5825 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5826 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5827 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5828 bool AteExtraComma = false;
5829 AtomicOrdering SuccessOrdering = NotAtomic;
5830 AtomicOrdering FailureOrdering = NotAtomic;
5831 SynchronizationScope Scope = CrossThread;
5832 bool isVolatile = false;
5833 bool isWeak = false;
5835 if (EatIfPresent(lltok::kw_weak))
5838 if (EatIfPresent(lltok::kw_volatile))
5841 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5842 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5843 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5844 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5845 ParseTypeAndValue(New, NewLoc, PFS) ||
5846 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5847 ParseOrdering(FailureOrdering))
5850 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5851 return TokError("cmpxchg cannot be unordered");
5852 if (SuccessOrdering < FailureOrdering)
5853 return TokError("cmpxchg must be at least as ordered on success as failure");
5854 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5855 return TokError("cmpxchg failure ordering cannot include release semantics");
5856 if (!Ptr->getType()->isPointerTy())
5857 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5858 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5859 return Error(CmpLoc, "compare value and pointer type do not match");
5860 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5861 return Error(NewLoc, "new value and pointer type do not match");
5862 if (!New->getType()->isIntegerTy())
5863 return Error(NewLoc, "cmpxchg operand must be an integer");
5864 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5865 if (Size < 8 || (Size & (Size - 1)))
5866 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5869 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5870 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5871 CXI->setVolatile(isVolatile);
5872 CXI->setWeak(isWeak);
5874 return AteExtraComma ? InstExtraComma : InstNormal;
5878 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5879 /// 'singlethread'? AtomicOrdering
5880 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5881 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5882 bool AteExtraComma = false;
5883 AtomicOrdering Ordering = NotAtomic;
5884 SynchronizationScope Scope = CrossThread;
5885 bool isVolatile = false;
5886 AtomicRMWInst::BinOp Operation;
5888 if (EatIfPresent(lltok::kw_volatile))
5891 switch (Lex.getKind()) {
5892 default: return TokError("expected binary operation in atomicrmw");
5893 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5894 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5895 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5896 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5897 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5898 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5899 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5900 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5901 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5902 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5903 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5905 Lex.Lex(); // Eat the operation.
5907 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5908 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5909 ParseTypeAndValue(Val, ValLoc, PFS) ||
5910 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5913 if (Ordering == Unordered)
5914 return TokError("atomicrmw cannot be unordered");
5915 if (!Ptr->getType()->isPointerTy())
5916 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5917 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5918 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5919 if (!Val->getType()->isIntegerTy())
5920 return Error(ValLoc, "atomicrmw operand must be an integer");
5921 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5922 if (Size < 8 || (Size & (Size - 1)))
5923 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5926 AtomicRMWInst *RMWI =
5927 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5928 RMWI->setVolatile(isVolatile);
5930 return AteExtraComma ? InstExtraComma : InstNormal;
5934 /// ::= 'fence' 'singlethread'? AtomicOrdering
5935 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5936 AtomicOrdering Ordering = NotAtomic;
5937 SynchronizationScope Scope = CrossThread;
5938 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5941 if (Ordering == Unordered)
5942 return TokError("fence cannot be unordered");
5943 if (Ordering == Monotonic)
5944 return TokError("fence cannot be monotonic");
5946 Inst = new FenceInst(Context, Ordering, Scope);
5950 /// ParseGetElementPtr
5951 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5952 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5953 Value *Ptr = nullptr;
5954 Value *Val = nullptr;
5957 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5960 LocTy ExplicitTypeLoc = Lex.getLoc();
5961 if (ParseType(Ty) ||
5962 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5963 ParseTypeAndValue(Ptr, Loc, PFS))
5966 Type *BaseType = Ptr->getType();
5967 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5968 if (!BasePointerType)
5969 return Error(Loc, "base of getelementptr must be a pointer");
5971 if (Ty != BasePointerType->getElementType())
5972 return Error(ExplicitTypeLoc,
5973 "explicit pointee type doesn't match operand's pointee type");
5975 SmallVector<Value*, 16> Indices;
5976 bool AteExtraComma = false;
5977 // GEP returns a vector of pointers if at least one of parameters is a vector.
5978 // All vector parameters should have the same vector width.
5979 unsigned GEPWidth = BaseType->isVectorTy() ?
5980 BaseType->getVectorNumElements() : 0;
5982 while (EatIfPresent(lltok::comma)) {
5983 if (Lex.getKind() == lltok::MetadataVar) {
5984 AteExtraComma = true;
5987 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5988 if (!Val->getType()->getScalarType()->isIntegerTy())
5989 return Error(EltLoc, "getelementptr index must be an integer");
5991 if (Val->getType()->isVectorTy()) {
5992 unsigned ValNumEl = Val->getType()->getVectorNumElements();
5993 if (GEPWidth && GEPWidth != ValNumEl)
5994 return Error(EltLoc,
5995 "getelementptr vector index has a wrong number of elements");
5996 GEPWidth = ValNumEl;
5998 Indices.push_back(Val);
6001 SmallPtrSet<Type*, 4> Visited;
6002 if (!Indices.empty() && !Ty->isSized(&Visited))
6003 return Error(Loc, "base element of getelementptr must be sized");
6005 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6006 return Error(Loc, "invalid getelementptr indices");
6007 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6009 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6010 return AteExtraComma ? InstExtraComma : InstNormal;
6013 /// ParseExtractValue
6014 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6015 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6016 Value *Val; LocTy Loc;
6017 SmallVector<unsigned, 4> Indices;
6019 if (ParseTypeAndValue(Val, Loc, PFS) ||
6020 ParseIndexList(Indices, AteExtraComma))
6023 if (!Val->getType()->isAggregateType())
6024 return Error(Loc, "extractvalue operand must be aggregate type");
6026 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6027 return Error(Loc, "invalid indices for extractvalue");
6028 Inst = ExtractValueInst::Create(Val, Indices);
6029 return AteExtraComma ? InstExtraComma : InstNormal;
6032 /// ParseInsertValue
6033 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6034 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6035 Value *Val0, *Val1; LocTy Loc0, Loc1;
6036 SmallVector<unsigned, 4> Indices;
6038 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6039 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6040 ParseTypeAndValue(Val1, Loc1, PFS) ||
6041 ParseIndexList(Indices, AteExtraComma))
6044 if (!Val0->getType()->isAggregateType())
6045 return Error(Loc0, "insertvalue operand must be aggregate type");
6047 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6049 return Error(Loc0, "invalid indices for insertvalue");
6050 if (IndexedType != Val1->getType())
6051 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6052 getTypeString(Val1->getType()) + "' instead of '" +
6053 getTypeString(IndexedType) + "'");
6054 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6055 return AteExtraComma ? InstExtraComma : InstNormal;
6058 //===----------------------------------------------------------------------===//
6059 // Embedded metadata.
6060 //===----------------------------------------------------------------------===//
6062 /// ParseMDNodeVector
6063 /// ::= { Element (',' Element)* }
6065 /// ::= 'null' | TypeAndValue
6066 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6067 if (ParseToken(lltok::lbrace, "expected '{' here"))
6070 // Check for an empty list.
6071 if (EatIfPresent(lltok::rbrace))
6075 // Null is a special case since it is typeless.
6076 if (EatIfPresent(lltok::kw_null)) {
6077 Elts.push_back(nullptr);
6082 if (ParseMetadata(MD, nullptr))
6085 } while (EatIfPresent(lltok::comma));
6087 return ParseToken(lltok::rbrace, "expected end of metadata node");
6090 //===----------------------------------------------------------------------===//
6091 // Use-list order directives.
6092 //===----------------------------------------------------------------------===//
6093 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6096 return Error(Loc, "value has no uses");
6098 unsigned NumUses = 0;
6099 SmallDenseMap<const Use *, unsigned, 16> Order;
6100 for (const Use &U : V->uses()) {
6101 if (++NumUses > Indexes.size())
6103 Order[&U] = Indexes[NumUses - 1];
6106 return Error(Loc, "value only has one use");
6107 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6108 return Error(Loc, "wrong number of indexes, expected " +
6109 Twine(std::distance(V->use_begin(), V->use_end())));
6111 V->sortUseList([&](const Use &L, const Use &R) {
6112 return Order.lookup(&L) < Order.lookup(&R);
6117 /// ParseUseListOrderIndexes
6118 /// ::= '{' uint32 (',' uint32)+ '}'
6119 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6120 SMLoc Loc = Lex.getLoc();
6121 if (ParseToken(lltok::lbrace, "expected '{' here"))
6123 if (Lex.getKind() == lltok::rbrace)
6124 return Lex.Error("expected non-empty list of uselistorder indexes");
6126 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6127 // indexes should be distinct numbers in the range [0, size-1], and should
6129 unsigned Offset = 0;
6131 bool IsOrdered = true;
6132 assert(Indexes.empty() && "Expected empty order vector");
6135 if (ParseUInt32(Index))
6138 // Update consistency checks.
6139 Offset += Index - Indexes.size();
6140 Max = std::max(Max, Index);
6141 IsOrdered &= Index == Indexes.size();
6143 Indexes.push_back(Index);
6144 } while (EatIfPresent(lltok::comma));
6146 if (ParseToken(lltok::rbrace, "expected '}' here"))
6149 if (Indexes.size() < 2)
6150 return Error(Loc, "expected >= 2 uselistorder indexes");
6151 if (Offset != 0 || Max >= Indexes.size())
6152 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6154 return Error(Loc, "expected uselistorder indexes to change the order");
6159 /// ParseUseListOrder
6160 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6161 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6162 SMLoc Loc = Lex.getLoc();
6163 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6167 SmallVector<unsigned, 16> Indexes;
6168 if (ParseTypeAndValue(V, PFS) ||
6169 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6170 ParseUseListOrderIndexes(Indexes))
6173 return sortUseListOrder(V, Indexes, Loc);
6176 /// ParseUseListOrderBB
6177 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6178 bool LLParser::ParseUseListOrderBB() {
6179 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6180 SMLoc Loc = Lex.getLoc();
6184 SmallVector<unsigned, 16> Indexes;
6185 if (ParseValID(Fn) ||
6186 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6187 ParseValID(Label) ||
6188 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6189 ParseUseListOrderIndexes(Indexes))
6192 // Check the function.
6194 if (Fn.Kind == ValID::t_GlobalName)
6195 GV = M->getNamedValue(Fn.StrVal);
6196 else if (Fn.Kind == ValID::t_GlobalID)
6197 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6199 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6201 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6202 auto *F = dyn_cast<Function>(GV);
6204 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6205 if (F->isDeclaration())
6206 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6208 // Check the basic block.
6209 if (Label.Kind == ValID::t_LocalID)
6210 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6211 if (Label.Kind != ValID::t_LocalName)
6212 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6213 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
6215 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6216 if (!isa<BasicBlock>(V))
6217 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6219 return sortUseListOrder(V, Indexes, Loc);