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/IR/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/IR/ValueSymbolTable.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/SaveAndRestore.h"
28 #include "llvm/Support/raw_ostream.h"
31 static std::string getTypeString(Type *T) {
33 raw_string_ostream Tmp(Result);
38 /// Run: module ::= toplevelentity*
39 bool LLParser::Run() {
43 return ParseTopLevelEntities() ||
44 ValidateEndOfModule();
47 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
49 bool LLParser::ValidateEndOfModule() {
50 // Handle any instruction metadata forward references.
51 if (!ForwardRefInstMetadata.empty()) {
52 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
53 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
55 Instruction *Inst = I->first;
56 const std::vector<MDRef> &MDList = I->second;
58 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
59 unsigned SlotNo = MDList[i].MDSlot;
61 if (SlotNo >= NumberedMetadata.size() ||
62 NumberedMetadata[SlotNo] == nullptr)
63 return Error(MDList[i].Loc, "use of undefined metadata '!" +
65 assert(!NumberedMetadata[SlotNo]->isFunctionLocal() &&
66 "Unexpected function-local metadata");
67 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
70 ForwardRefInstMetadata.clear();
73 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
74 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
76 // Handle any function attribute group forward references.
77 for (std::map<Value*, std::vector<unsigned> >::iterator
78 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
81 std::vector<unsigned> &Vec = I->second;
84 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
86 B.merge(NumberedAttrBuilders[*VI]);
88 if (Function *Fn = dyn_cast<Function>(V)) {
89 AttributeSet AS = Fn->getAttributes();
90 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
91 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
92 AS.getFnAttributes());
96 // If the alignment was parsed as an attribute, move to the alignment
98 if (FnAttrs.hasAlignmentAttr()) {
99 Fn->setAlignment(FnAttrs.getAlignment());
100 FnAttrs.removeAttribute(Attribute::Alignment);
103 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
104 AttributeSet::get(Context,
105 AttributeSet::FunctionIndex,
107 Fn->setAttributes(AS);
108 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
109 AttributeSet AS = CI->getAttributes();
110 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
111 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
112 AS.getFnAttributes());
114 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
115 AttributeSet::get(Context,
116 AttributeSet::FunctionIndex,
118 CI->setAttributes(AS);
119 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
120 AttributeSet AS = II->getAttributes();
121 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
122 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
123 AS.getFnAttributes());
125 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
126 AttributeSet::get(Context,
127 AttributeSet::FunctionIndex,
129 II->setAttributes(AS);
131 llvm_unreachable("invalid object with forward attribute group reference");
135 // If there are entries in ForwardRefBlockAddresses at this point, the
136 // function was never defined.
137 if (!ForwardRefBlockAddresses.empty())
138 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
139 "expected function name in blockaddress");
141 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
142 if (NumberedTypes[i].second.isValid())
143 return Error(NumberedTypes[i].second,
144 "use of undefined type '%" + Twine(i) + "'");
146 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
147 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
148 if (I->second.second.isValid())
149 return Error(I->second.second,
150 "use of undefined type named '" + I->getKey() + "'");
152 if (!ForwardRefComdats.empty())
153 return Error(ForwardRefComdats.begin()->second,
154 "use of undefined comdat '$" +
155 ForwardRefComdats.begin()->first + "'");
157 if (!ForwardRefVals.empty())
158 return Error(ForwardRefVals.begin()->second.second,
159 "use of undefined value '@" + ForwardRefVals.begin()->first +
162 if (!ForwardRefValIDs.empty())
163 return Error(ForwardRefValIDs.begin()->second.second,
164 "use of undefined value '@" +
165 Twine(ForwardRefValIDs.begin()->first) + "'");
167 if (!ForwardRefMDNodes.empty())
168 return Error(ForwardRefMDNodes.begin()->second.second,
169 "use of undefined metadata '!" +
170 Twine(ForwardRefMDNodes.begin()->first) + "'");
173 // Look for intrinsic functions and CallInst that need to be upgraded
174 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
175 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
177 UpgradeDebugInfo(*M);
182 //===----------------------------------------------------------------------===//
183 // Top-Level Entities
184 //===----------------------------------------------------------------------===//
186 bool LLParser::ParseTopLevelEntities() {
188 switch (Lex.getKind()) {
189 default: return TokError("expected top-level entity");
190 case lltok::Eof: return false;
191 case lltok::kw_declare: if (ParseDeclare()) return true; break;
192 case lltok::kw_define: if (ParseDefine()) return true; break;
193 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
194 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
195 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
196 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
197 case lltok::LocalVar: if (ParseNamedType()) return true; break;
198 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
199 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
200 case lltok::ComdatVar: if (parseComdat()) return true; break;
201 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
202 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
204 // The Global variable production with no name can have many different
205 // optional leading prefixes, the production is:
206 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
207 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
208 // ('constant'|'global') ...
209 case lltok::kw_private: // OptionalLinkage
210 case lltok::kw_internal: // OptionalLinkage
211 case lltok::kw_weak: // OptionalLinkage
212 case lltok::kw_weak_odr: // OptionalLinkage
213 case lltok::kw_linkonce: // OptionalLinkage
214 case lltok::kw_linkonce_odr: // OptionalLinkage
215 case lltok::kw_appending: // OptionalLinkage
216 case lltok::kw_common: // OptionalLinkage
217 case lltok::kw_extern_weak: // OptionalLinkage
218 case lltok::kw_external: // OptionalLinkage
219 case lltok::kw_default: // OptionalVisibility
220 case lltok::kw_hidden: // OptionalVisibility
221 case lltok::kw_protected: // OptionalVisibility
222 case lltok::kw_dllimport: // OptionalDLLStorageClass
223 case lltok::kw_dllexport: // OptionalDLLStorageClass
224 case lltok::kw_thread_local: // OptionalThreadLocal
225 case lltok::kw_addrspace: // OptionalAddrSpace
226 case lltok::kw_constant: // GlobalType
227 case lltok::kw_global: { // GlobalType
228 unsigned Linkage, Visibility, DLLStorageClass;
230 GlobalVariable::ThreadLocalMode TLM;
232 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
233 ParseOptionalVisibility(Visibility) ||
234 ParseOptionalDLLStorageClass(DLLStorageClass) ||
235 ParseOptionalThreadLocal(TLM) ||
236 parseOptionalUnnamedAddr(UnnamedAddr) ||
237 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
238 DLLStorageClass, TLM, UnnamedAddr))
243 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
244 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
245 case lltok::kw_uselistorder_bb:
246 if (ParseUseListOrderBB()) return true; break;
253 /// ::= 'module' 'asm' STRINGCONSTANT
254 bool LLParser::ParseModuleAsm() {
255 assert(Lex.getKind() == lltok::kw_module);
259 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
260 ParseStringConstant(AsmStr)) return true;
262 M->appendModuleInlineAsm(AsmStr);
267 /// ::= 'target' 'triple' '=' STRINGCONSTANT
268 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
269 bool LLParser::ParseTargetDefinition() {
270 assert(Lex.getKind() == lltok::kw_target);
273 default: return TokError("unknown target property");
274 case lltok::kw_triple:
276 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
277 ParseStringConstant(Str))
279 M->setTargetTriple(Str);
281 case lltok::kw_datalayout:
283 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
284 ParseStringConstant(Str))
286 M->setDataLayout(Str);
292 /// ::= 'deplibs' '=' '[' ']'
293 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
294 /// FIXME: Remove in 4.0. Currently parse, but ignore.
295 bool LLParser::ParseDepLibs() {
296 assert(Lex.getKind() == lltok::kw_deplibs);
298 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
299 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
302 if (EatIfPresent(lltok::rsquare))
307 if (ParseStringConstant(Str)) return true;
308 } while (EatIfPresent(lltok::comma));
310 return ParseToken(lltok::rsquare, "expected ']' at end of list");
313 /// ParseUnnamedType:
314 /// ::= LocalVarID '=' 'type' type
315 bool LLParser::ParseUnnamedType() {
316 LocTy TypeLoc = Lex.getLoc();
317 unsigned TypeID = Lex.getUIntVal();
318 Lex.Lex(); // eat LocalVarID;
320 if (ParseToken(lltok::equal, "expected '=' after name") ||
321 ParseToken(lltok::kw_type, "expected 'type' after '='"))
324 if (TypeID >= NumberedTypes.size())
325 NumberedTypes.resize(TypeID+1);
327 Type *Result = nullptr;
328 if (ParseStructDefinition(TypeLoc, "",
329 NumberedTypes[TypeID], Result)) return true;
331 if (!isa<StructType>(Result)) {
332 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
334 return Error(TypeLoc, "non-struct types may not be recursive");
335 Entry.first = Result;
336 Entry.second = SMLoc();
344 /// ::= LocalVar '=' 'type' type
345 bool LLParser::ParseNamedType() {
346 std::string Name = Lex.getStrVal();
347 LocTy NameLoc = Lex.getLoc();
348 Lex.Lex(); // eat LocalVar.
350 if (ParseToken(lltok::equal, "expected '=' after name") ||
351 ParseToken(lltok::kw_type, "expected 'type' after name"))
354 Type *Result = nullptr;
355 if (ParseStructDefinition(NameLoc, Name,
356 NamedTypes[Name], Result)) return true;
358 if (!isa<StructType>(Result)) {
359 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
361 return Error(NameLoc, "non-struct types may not be recursive");
362 Entry.first = Result;
363 Entry.second = SMLoc();
371 /// ::= 'declare' FunctionHeader
372 bool LLParser::ParseDeclare() {
373 assert(Lex.getKind() == lltok::kw_declare);
377 return ParseFunctionHeader(F, false);
381 /// ::= 'define' FunctionHeader '{' ...
382 bool LLParser::ParseDefine() {
383 assert(Lex.getKind() == lltok::kw_define);
387 return ParseFunctionHeader(F, true) ||
388 ParseFunctionBody(*F);
394 bool LLParser::ParseGlobalType(bool &IsConstant) {
395 if (Lex.getKind() == lltok::kw_constant)
397 else if (Lex.getKind() == lltok::kw_global)
401 return TokError("expected 'global' or 'constant'");
407 /// ParseUnnamedGlobal:
408 /// OptionalVisibility ALIAS ...
409 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
410 /// ... -> global variable
411 /// GlobalID '=' OptionalVisibility ALIAS ...
412 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
413 /// ... -> global variable
414 bool LLParser::ParseUnnamedGlobal() {
415 unsigned VarID = NumberedVals.size();
417 LocTy NameLoc = Lex.getLoc();
419 // Handle the GlobalID form.
420 if (Lex.getKind() == lltok::GlobalID) {
421 if (Lex.getUIntVal() != VarID)
422 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
424 Lex.Lex(); // eat GlobalID;
426 if (ParseToken(lltok::equal, "expected '=' after name"))
431 unsigned Linkage, Visibility, DLLStorageClass;
432 GlobalVariable::ThreadLocalMode TLM;
434 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
435 ParseOptionalVisibility(Visibility) ||
436 ParseOptionalDLLStorageClass(DLLStorageClass) ||
437 ParseOptionalThreadLocal(TLM) ||
438 parseOptionalUnnamedAddr(UnnamedAddr))
441 if (Lex.getKind() != lltok::kw_alias)
442 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
443 DLLStorageClass, TLM, UnnamedAddr);
444 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
448 /// ParseNamedGlobal:
449 /// GlobalVar '=' OptionalVisibility ALIAS ...
450 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
451 /// ... -> global variable
452 bool LLParser::ParseNamedGlobal() {
453 assert(Lex.getKind() == lltok::GlobalVar);
454 LocTy NameLoc = Lex.getLoc();
455 std::string Name = Lex.getStrVal();
459 unsigned Linkage, Visibility, DLLStorageClass;
460 GlobalVariable::ThreadLocalMode TLM;
462 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
463 ParseOptionalLinkage(Linkage, HasLinkage) ||
464 ParseOptionalVisibility(Visibility) ||
465 ParseOptionalDLLStorageClass(DLLStorageClass) ||
466 ParseOptionalThreadLocal(TLM) ||
467 parseOptionalUnnamedAddr(UnnamedAddr))
470 if (Lex.getKind() != lltok::kw_alias)
471 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
472 DLLStorageClass, TLM, UnnamedAddr);
474 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
478 bool LLParser::parseComdat() {
479 assert(Lex.getKind() == lltok::ComdatVar);
480 std::string Name = Lex.getStrVal();
481 LocTy NameLoc = Lex.getLoc();
484 if (ParseToken(lltok::equal, "expected '=' here"))
487 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
488 return TokError("expected comdat type");
490 Comdat::SelectionKind SK;
491 switch (Lex.getKind()) {
493 return TokError("unknown selection kind");
497 case lltok::kw_exactmatch:
498 SK = Comdat::ExactMatch;
500 case lltok::kw_largest:
501 SK = Comdat::Largest;
503 case lltok::kw_noduplicates:
504 SK = Comdat::NoDuplicates;
506 case lltok::kw_samesize:
507 SK = Comdat::SameSize;
512 // See if the comdat was forward referenced, if so, use the comdat.
513 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
514 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
515 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
516 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
519 if (I != ComdatSymTab.end())
522 C = M->getOrInsertComdat(Name);
523 C->setSelectionKind(SK);
529 // ::= '!' STRINGCONSTANT
530 bool LLParser::ParseMDString(MDString *&Result) {
532 if (ParseStringConstant(Str)) return true;
533 llvm::UpgradeMDStringConstant(Str);
534 Result = MDString::get(Context, Str);
539 // ::= '!' MDNodeNumber
541 /// This version of ParseMDNodeID returns the slot number and null in the case
542 /// of a forward reference.
543 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
544 // !{ ..., !42, ... }
545 if (ParseUInt32(SlotNo)) return true;
547 // Check existing MDNode.
548 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != nullptr)
549 Result = NumberedMetadata[SlotNo];
555 bool LLParser::ParseMDNodeID(MDNode *&Result) {
556 // !{ ..., !42, ... }
558 if (ParseMDNodeID(Result, MID)) return true;
560 // If not a forward reference, just return it now.
561 if (Result) return false;
563 // Otherwise, create MDNode forward reference.
564 MDNode *FwdNode = MDNode::getTemporary(Context, None);
565 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
567 if (NumberedMetadata.size() <= MID)
568 NumberedMetadata.resize(MID+1);
569 NumberedMetadata[MID] = FwdNode;
574 /// ParseNamedMetadata:
575 /// !foo = !{ !1, !2 }
576 bool LLParser::ParseNamedMetadata() {
577 assert(Lex.getKind() == lltok::MetadataVar);
578 std::string Name = Lex.getStrVal();
581 if (ParseToken(lltok::equal, "expected '=' here") ||
582 ParseToken(lltok::exclaim, "Expected '!' here") ||
583 ParseToken(lltok::lbrace, "Expected '{' here"))
586 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
587 if (Lex.getKind() != lltok::rbrace)
589 if (ParseToken(lltok::exclaim, "Expected '!' here"))
593 if (ParseMDNodeID(N)) return true;
595 } while (EatIfPresent(lltok::comma));
597 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
603 /// ParseStandaloneMetadata:
605 bool LLParser::ParseStandaloneMetadata() {
606 assert(Lex.getKind() == lltok::exclaim);
608 unsigned MetadataID = 0;
612 SmallVector<Value *, 16> Elts;
613 if (ParseUInt32(MetadataID) ||
614 ParseToken(lltok::equal, "expected '=' here") ||
615 ParseType(Ty, TyLoc) ||
616 ParseToken(lltok::exclaim, "Expected '!' here") ||
617 ParseToken(lltok::lbrace, "Expected '{' here") ||
618 ParseMDNodeVector(Elts, nullptr) ||
619 ParseToken(lltok::rbrace, "expected end of metadata node"))
622 MDNode *Init = MDNode::get(Context, Elts);
624 // See if this was forward referenced, if so, handle it.
625 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
626 FI = ForwardRefMDNodes.find(MetadataID);
627 if (FI != ForwardRefMDNodes.end()) {
628 MDNode *Temp = FI->second.first;
629 Temp->replaceAllUsesWith(Init);
630 MDNode::deleteTemporary(Temp);
631 ForwardRefMDNodes.erase(FI);
633 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
635 if (MetadataID >= NumberedMetadata.size())
636 NumberedMetadata.resize(MetadataID+1);
638 if (NumberedMetadata[MetadataID] != nullptr)
639 return TokError("Metadata id is already used");
640 NumberedMetadata[MetadataID] = Init;
646 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
647 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
648 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
652 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
653 /// OptionalDLLStorageClass OptionalThreadLocal
654 /// OptionalUnNammedAddr 'alias' Aliasee
659 /// Everything through OptionalUnNammedAddr has already been parsed.
661 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
662 unsigned Visibility, unsigned DLLStorageClass,
663 GlobalVariable::ThreadLocalMode TLM,
665 assert(Lex.getKind() == lltok::kw_alias);
668 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
670 if(!GlobalAlias::isValidLinkage(Linkage))
671 return Error(NameLoc, "invalid linkage type for alias");
673 if (!isValidVisibilityForLinkage(Visibility, L))
674 return Error(NameLoc,
675 "symbol with local linkage must have default visibility");
678 LocTy AliaseeLoc = Lex.getLoc();
679 if (Lex.getKind() != lltok::kw_bitcast &&
680 Lex.getKind() != lltok::kw_getelementptr &&
681 Lex.getKind() != lltok::kw_addrspacecast &&
682 Lex.getKind() != lltok::kw_inttoptr) {
683 if (ParseGlobalTypeAndValue(Aliasee))
686 // The bitcast dest type is not present, it is implied by the dest type.
690 if (ID.Kind != ValID::t_Constant)
691 return Error(AliaseeLoc, "invalid aliasee");
692 Aliasee = ID.ConstantVal;
695 Type *AliaseeType = Aliasee->getType();
696 auto *PTy = dyn_cast<PointerType>(AliaseeType);
698 return Error(AliaseeLoc, "An alias must have pointer type");
699 Type *Ty = PTy->getElementType();
700 unsigned AddrSpace = PTy->getAddressSpace();
702 // Okay, create the alias but do not insert it into the module yet.
703 std::unique_ptr<GlobalAlias> GA(
704 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
705 Name, Aliasee, /*Parent*/ nullptr));
706 GA->setThreadLocalMode(TLM);
707 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
708 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
709 GA->setUnnamedAddr(UnnamedAddr);
711 // See if this value already exists in the symbol table. If so, it is either
712 // a redefinition or a definition of a forward reference.
713 if (GlobalValue *Val = M->getNamedValue(Name)) {
714 // See if this was a redefinition. If so, there is no entry in
716 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
717 I = ForwardRefVals.find(Name);
718 if (I == ForwardRefVals.end())
719 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
721 // Otherwise, this was a definition of forward ref. Verify that types
723 if (Val->getType() != GA->getType())
724 return Error(NameLoc,
725 "forward reference and definition of alias have different types");
727 // If they agree, just RAUW the old value with the alias and remove the
729 Val->replaceAllUsesWith(GA.get());
730 Val->eraseFromParent();
731 ForwardRefVals.erase(I);
734 // Insert into the module, we know its name won't collide now.
735 M->getAliasList().push_back(GA.get());
736 assert(GA->getName() == Name && "Should not be a name conflict!");
738 // The module owns this now
745 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
746 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
747 /// OptionalExternallyInitialized GlobalType Type Const
748 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
749 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
750 /// OptionalExternallyInitialized GlobalType Type Const
752 /// Everything up to and including OptionalUnNammedAddr has been parsed
755 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
756 unsigned Linkage, bool HasLinkage,
757 unsigned Visibility, unsigned DLLStorageClass,
758 GlobalVariable::ThreadLocalMode TLM,
760 if (!isValidVisibilityForLinkage(Visibility, Linkage))
761 return Error(NameLoc,
762 "symbol with local linkage must have default visibility");
765 bool IsConstant, IsExternallyInitialized;
766 LocTy IsExternallyInitializedLoc;
770 if (ParseOptionalAddrSpace(AddrSpace) ||
771 ParseOptionalToken(lltok::kw_externally_initialized,
772 IsExternallyInitialized,
773 &IsExternallyInitializedLoc) ||
774 ParseGlobalType(IsConstant) ||
775 ParseType(Ty, TyLoc))
778 // If the linkage is specified and is external, then no initializer is
780 Constant *Init = nullptr;
781 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
782 Linkage != GlobalValue::ExternalLinkage)) {
783 if (ParseGlobalValue(Ty, Init))
787 if (Ty->isFunctionTy() || Ty->isLabelTy())
788 return Error(TyLoc, "invalid type for global variable");
790 GlobalValue *GVal = nullptr;
792 // See if the global was forward referenced, if so, use the global.
794 GVal = M->getNamedValue(Name);
796 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
797 return Error(NameLoc, "redefinition of global '@" + Name + "'");
800 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
801 I = ForwardRefValIDs.find(NumberedVals.size());
802 if (I != ForwardRefValIDs.end()) {
803 GVal = I->second.first;
804 ForwardRefValIDs.erase(I);
810 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
811 Name, nullptr, GlobalVariable::NotThreadLocal,
814 if (GVal->getType()->getElementType() != Ty)
816 "forward reference and definition of global have different types");
818 GV = cast<GlobalVariable>(GVal);
820 // Move the forward-reference to the correct spot in the module.
821 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
825 NumberedVals.push_back(GV);
827 // Set the parsed properties on the global.
829 GV->setInitializer(Init);
830 GV->setConstant(IsConstant);
831 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
832 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
833 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
834 GV->setExternallyInitialized(IsExternallyInitialized);
835 GV->setThreadLocalMode(TLM);
836 GV->setUnnamedAddr(UnnamedAddr);
838 // Parse attributes on the global.
839 while (Lex.getKind() == lltok::comma) {
842 if (Lex.getKind() == lltok::kw_section) {
844 GV->setSection(Lex.getStrVal());
845 if (ParseToken(lltok::StringConstant, "expected global section string"))
847 } else if (Lex.getKind() == lltok::kw_align) {
849 if (ParseOptionalAlignment(Alignment)) return true;
850 GV->setAlignment(Alignment);
853 if (parseOptionalComdat(C))
858 return TokError("unknown global variable property!");
865 /// ParseUnnamedAttrGrp
866 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
867 bool LLParser::ParseUnnamedAttrGrp() {
868 assert(Lex.getKind() == lltok::kw_attributes);
869 LocTy AttrGrpLoc = Lex.getLoc();
872 if (Lex.getKind() != lltok::AttrGrpID)
873 return TokError("expected attribute group id");
875 unsigned VarID = Lex.getUIntVal();
876 std::vector<unsigned> unused;
880 if (ParseToken(lltok::equal, "expected '=' here") ||
881 ParseToken(lltok::lbrace, "expected '{' here") ||
882 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
884 ParseToken(lltok::rbrace, "expected end of attribute group"))
887 if (!NumberedAttrBuilders[VarID].hasAttributes())
888 return Error(AttrGrpLoc, "attribute group has no attributes");
893 /// ParseFnAttributeValuePairs
894 /// ::= <attr> | <attr> '=' <value>
895 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
896 std::vector<unsigned> &FwdRefAttrGrps,
897 bool inAttrGrp, LocTy &BuiltinLoc) {
898 bool HaveError = false;
903 lltok::Kind Token = Lex.getKind();
904 if (Token == lltok::kw_builtin)
905 BuiltinLoc = Lex.getLoc();
908 if (!inAttrGrp) return HaveError;
909 return Error(Lex.getLoc(), "unterminated attribute group");
914 case lltok::AttrGrpID: {
915 // Allow a function to reference an attribute group:
917 // define void @foo() #1 { ... }
921 "cannot have an attribute group reference in an attribute group");
923 unsigned AttrGrpNum = Lex.getUIntVal();
924 if (inAttrGrp) break;
926 // Save the reference to the attribute group. We'll fill it in later.
927 FwdRefAttrGrps.push_back(AttrGrpNum);
930 // Target-dependent attributes:
931 case lltok::StringConstant: {
932 std::string Attr = Lex.getStrVal();
935 if (EatIfPresent(lltok::equal) &&
936 ParseStringConstant(Val))
939 B.addAttribute(Attr, Val);
943 // Target-independent attributes:
944 case lltok::kw_align: {
945 // As a hack, we allow function alignment to be initially parsed as an
946 // attribute on a function declaration/definition or added to an attribute
947 // group and later moved to the alignment field.
951 if (ParseToken(lltok::equal, "expected '=' here") ||
952 ParseUInt32(Alignment))
955 if (ParseOptionalAlignment(Alignment))
958 B.addAlignmentAttr(Alignment);
961 case lltok::kw_alignstack: {
965 if (ParseToken(lltok::equal, "expected '=' here") ||
966 ParseUInt32(Alignment))
969 if (ParseOptionalStackAlignment(Alignment))
972 B.addStackAlignmentAttr(Alignment);
975 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
976 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
977 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
978 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
979 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
980 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
981 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
982 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
983 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
984 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
985 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
986 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
987 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
988 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
989 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
990 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
991 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
992 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
993 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
994 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
995 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
996 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
997 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
998 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
999 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
1000 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
1001 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1004 case lltok::kw_inreg:
1005 case lltok::kw_signext:
1006 case lltok::kw_zeroext:
1009 "invalid use of attribute on a function");
1011 case lltok::kw_byval:
1012 case lltok::kw_dereferenceable:
1013 case lltok::kw_inalloca:
1014 case lltok::kw_nest:
1015 case lltok::kw_noalias:
1016 case lltok::kw_nocapture:
1017 case lltok::kw_nonnull:
1018 case lltok::kw_returned:
1019 case lltok::kw_sret:
1022 "invalid use of parameter-only attribute on a function");
1030 //===----------------------------------------------------------------------===//
1031 // GlobalValue Reference/Resolution Routines.
1032 //===----------------------------------------------------------------------===//
1034 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1035 /// forward reference record if needed. This can return null if the value
1036 /// exists but does not have the right type.
1037 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1039 PointerType *PTy = dyn_cast<PointerType>(Ty);
1041 Error(Loc, "global variable reference must have pointer type");
1045 // Look this name up in the normal function symbol table.
1047 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1049 // If this is a forward reference for the value, see if we already created a
1050 // forward ref record.
1052 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1053 I = ForwardRefVals.find(Name);
1054 if (I != ForwardRefVals.end())
1055 Val = I->second.first;
1058 // If we have the value in the symbol table or fwd-ref table, return it.
1060 if (Val->getType() == Ty) return Val;
1061 Error(Loc, "'@" + Name + "' defined with type '" +
1062 getTypeString(Val->getType()) + "'");
1066 // Otherwise, create a new forward reference for this value and remember it.
1067 GlobalValue *FwdVal;
1068 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1069 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1071 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1072 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1073 nullptr, GlobalVariable::NotThreadLocal,
1074 PTy->getAddressSpace());
1076 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1080 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1081 PointerType *PTy = dyn_cast<PointerType>(Ty);
1083 Error(Loc, "global variable reference must have pointer type");
1087 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1089 // If this is a forward reference for the value, see if we already created a
1090 // forward ref record.
1092 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1093 I = ForwardRefValIDs.find(ID);
1094 if (I != ForwardRefValIDs.end())
1095 Val = I->second.first;
1098 // If we have the value in the symbol table or fwd-ref table, return it.
1100 if (Val->getType() == Ty) return Val;
1101 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1102 getTypeString(Val->getType()) + "'");
1106 // Otherwise, create a new forward reference for this value and remember it.
1107 GlobalValue *FwdVal;
1108 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1109 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1111 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1112 GlobalValue::ExternalWeakLinkage, nullptr, "");
1114 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1119 //===----------------------------------------------------------------------===//
1120 // Comdat Reference/Resolution Routines.
1121 //===----------------------------------------------------------------------===//
1123 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1124 // Look this name up in the comdat symbol table.
1125 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1126 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1127 if (I != ComdatSymTab.end())
1130 // Otherwise, create a new forward reference for this value and remember it.
1131 Comdat *C = M->getOrInsertComdat(Name);
1132 ForwardRefComdats[Name] = Loc;
1137 //===----------------------------------------------------------------------===//
1139 //===----------------------------------------------------------------------===//
1141 /// ParseToken - If the current token has the specified kind, eat it and return
1142 /// success. Otherwise, emit the specified error and return failure.
1143 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1144 if (Lex.getKind() != T)
1145 return TokError(ErrMsg);
1150 /// ParseStringConstant
1151 /// ::= StringConstant
1152 bool LLParser::ParseStringConstant(std::string &Result) {
1153 if (Lex.getKind() != lltok::StringConstant)
1154 return TokError("expected string constant");
1155 Result = Lex.getStrVal();
1162 bool LLParser::ParseUInt32(unsigned &Val) {
1163 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1164 return TokError("expected integer");
1165 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1166 if (Val64 != unsigned(Val64))
1167 return TokError("expected 32-bit integer (too large)");
1175 bool LLParser::ParseUInt64(uint64_t &Val) {
1176 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1177 return TokError("expected integer");
1178 Val = Lex.getAPSIntVal().getLimitedValue();
1184 /// := 'localdynamic'
1185 /// := 'initialexec'
1187 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1188 switch (Lex.getKind()) {
1190 return TokError("expected localdynamic, initialexec or localexec");
1191 case lltok::kw_localdynamic:
1192 TLM = GlobalVariable::LocalDynamicTLSModel;
1194 case lltok::kw_initialexec:
1195 TLM = GlobalVariable::InitialExecTLSModel;
1197 case lltok::kw_localexec:
1198 TLM = GlobalVariable::LocalExecTLSModel;
1206 /// ParseOptionalThreadLocal
1208 /// := 'thread_local'
1209 /// := 'thread_local' '(' tlsmodel ')'
1210 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1211 TLM = GlobalVariable::NotThreadLocal;
1212 if (!EatIfPresent(lltok::kw_thread_local))
1215 TLM = GlobalVariable::GeneralDynamicTLSModel;
1216 if (Lex.getKind() == lltok::lparen) {
1218 return ParseTLSModel(TLM) ||
1219 ParseToken(lltok::rparen, "expected ')' after thread local model");
1224 /// ParseOptionalAddrSpace
1226 /// := 'addrspace' '(' uint32 ')'
1227 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1229 if (!EatIfPresent(lltok::kw_addrspace))
1231 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1232 ParseUInt32(AddrSpace) ||
1233 ParseToken(lltok::rparen, "expected ')' in address space");
1236 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1237 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1238 bool HaveError = false;
1243 lltok::Kind Token = Lex.getKind();
1245 default: // End of attributes.
1247 case lltok::kw_align: {
1249 if (ParseOptionalAlignment(Alignment))
1251 B.addAlignmentAttr(Alignment);
1254 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1255 case lltok::kw_dereferenceable: {
1257 if (ParseOptionalDereferenceableBytes(Bytes))
1259 B.addDereferenceableAttr(Bytes);
1262 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1263 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1264 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1265 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1266 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1267 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1268 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1269 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1270 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1271 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1272 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1273 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1275 case lltok::kw_alignstack:
1276 case lltok::kw_alwaysinline:
1277 case lltok::kw_builtin:
1278 case lltok::kw_inlinehint:
1279 case lltok::kw_jumptable:
1280 case lltok::kw_minsize:
1281 case lltok::kw_naked:
1282 case lltok::kw_nobuiltin:
1283 case lltok::kw_noduplicate:
1284 case lltok::kw_noimplicitfloat:
1285 case lltok::kw_noinline:
1286 case lltok::kw_nonlazybind:
1287 case lltok::kw_noredzone:
1288 case lltok::kw_noreturn:
1289 case lltok::kw_nounwind:
1290 case lltok::kw_optnone:
1291 case lltok::kw_optsize:
1292 case lltok::kw_returns_twice:
1293 case lltok::kw_sanitize_address:
1294 case lltok::kw_sanitize_memory:
1295 case lltok::kw_sanitize_thread:
1297 case lltok::kw_sspreq:
1298 case lltok::kw_sspstrong:
1299 case lltok::kw_uwtable:
1300 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1308 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1309 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1310 bool HaveError = false;
1315 lltok::Kind Token = Lex.getKind();
1317 default: // End of attributes.
1319 case lltok::kw_dereferenceable: {
1321 if (ParseOptionalDereferenceableBytes(Bytes))
1323 B.addDereferenceableAttr(Bytes);
1326 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1327 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1328 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1329 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1330 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1333 case lltok::kw_align:
1334 case lltok::kw_byval:
1335 case lltok::kw_inalloca:
1336 case lltok::kw_nest:
1337 case lltok::kw_nocapture:
1338 case lltok::kw_returned:
1339 case lltok::kw_sret:
1340 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1343 case lltok::kw_alignstack:
1344 case lltok::kw_alwaysinline:
1345 case lltok::kw_builtin:
1346 case lltok::kw_cold:
1347 case lltok::kw_inlinehint:
1348 case lltok::kw_jumptable:
1349 case lltok::kw_minsize:
1350 case lltok::kw_naked:
1351 case lltok::kw_nobuiltin:
1352 case lltok::kw_noduplicate:
1353 case lltok::kw_noimplicitfloat:
1354 case lltok::kw_noinline:
1355 case lltok::kw_nonlazybind:
1356 case lltok::kw_noredzone:
1357 case lltok::kw_noreturn:
1358 case lltok::kw_nounwind:
1359 case lltok::kw_optnone:
1360 case lltok::kw_optsize:
1361 case lltok::kw_returns_twice:
1362 case lltok::kw_sanitize_address:
1363 case lltok::kw_sanitize_memory:
1364 case lltok::kw_sanitize_thread:
1366 case lltok::kw_sspreq:
1367 case lltok::kw_sspstrong:
1368 case lltok::kw_uwtable:
1369 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1372 case lltok::kw_readnone:
1373 case lltok::kw_readonly:
1374 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1381 /// ParseOptionalLinkage
1388 /// ::= 'linkonce_odr'
1389 /// ::= 'available_externally'
1392 /// ::= 'extern_weak'
1394 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1396 switch (Lex.getKind()) {
1397 default: Res=GlobalValue::ExternalLinkage; return false;
1398 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1399 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1400 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1401 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1402 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1403 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1404 case lltok::kw_available_externally:
1405 Res = GlobalValue::AvailableExternallyLinkage;
1407 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1408 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1409 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1410 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1417 /// ParseOptionalVisibility
1423 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1424 switch (Lex.getKind()) {
1425 default: Res = GlobalValue::DefaultVisibility; return false;
1426 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1427 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1428 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1434 /// ParseOptionalDLLStorageClass
1439 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1440 switch (Lex.getKind()) {
1441 default: Res = GlobalValue::DefaultStorageClass; return false;
1442 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1443 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1449 /// ParseOptionalCallingConv
1453 /// ::= 'intel_ocl_bicc'
1455 /// ::= 'x86_stdcallcc'
1456 /// ::= 'x86_fastcallcc'
1457 /// ::= 'x86_thiscallcc'
1458 /// ::= 'x86_vectorcallcc'
1459 /// ::= 'arm_apcscc'
1460 /// ::= 'arm_aapcscc'
1461 /// ::= 'arm_aapcs_vfpcc'
1462 /// ::= 'msp430_intrcc'
1463 /// ::= 'ptx_kernel'
1464 /// ::= 'ptx_device'
1466 /// ::= 'spir_kernel'
1467 /// ::= 'x86_64_sysvcc'
1468 /// ::= 'x86_64_win64cc'
1469 /// ::= 'webkit_jscc'
1471 /// ::= 'preserve_mostcc'
1472 /// ::= 'preserve_allcc'
1476 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1477 switch (Lex.getKind()) {
1478 default: CC = CallingConv::C; return false;
1479 case lltok::kw_ccc: CC = CallingConv::C; break;
1480 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1481 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1482 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1483 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1484 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1485 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1486 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1487 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1488 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1489 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1490 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1491 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1492 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1493 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1494 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1495 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1496 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1497 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1498 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1499 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1500 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1501 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1502 case lltok::kw_cc: {
1504 return ParseUInt32(CC);
1512 /// ParseInstructionMetadata
1513 /// ::= !dbg !42 (',' !dbg !57)*
1514 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1515 PerFunctionState *PFS) {
1517 if (Lex.getKind() != lltok::MetadataVar)
1518 return TokError("expected metadata after comma");
1520 std::string Name = Lex.getStrVal();
1521 unsigned MDK = M->getMDKindID(Name);
1525 SMLoc Loc = Lex.getLoc();
1527 if (ParseToken(lltok::exclaim, "expected '!' here"))
1530 // This code is similar to that of ParseMetadataValue, however it needs to
1531 // have special-case code for a forward reference; see the comments on
1532 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1533 // at the top level here.
1534 if (Lex.getKind() == lltok::lbrace) {
1536 if (ParseMetadataListValue(ID, PFS))
1538 assert(ID.Kind == ValID::t_MDNode);
1539 if (ID.MDNodeVal->isFunctionLocal())
1540 return Error(Loc, "unexpected function-local metadata");
1541 Inst->setMetadata(MDK, ID.MDNodeVal);
1543 unsigned NodeID = 0;
1544 if (ParseMDNodeID(Node, NodeID))
1547 // If we got the node, add it to the instruction.
1548 Inst->setMetadata(MDK, Node);
1550 MDRef R = { Loc, MDK, NodeID };
1551 // Otherwise, remember that this should be resolved later.
1552 ForwardRefInstMetadata[Inst].push_back(R);
1556 if (MDK == LLVMContext::MD_tbaa)
1557 InstsWithTBAATag.push_back(Inst);
1559 // If this is the end of the list, we're done.
1560 } while (EatIfPresent(lltok::comma));
1564 /// ParseOptionalAlignment
1567 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1569 if (!EatIfPresent(lltok::kw_align))
1571 LocTy AlignLoc = Lex.getLoc();
1572 if (ParseUInt32(Alignment)) return true;
1573 if (!isPowerOf2_32(Alignment))
1574 return Error(AlignLoc, "alignment is not a power of two");
1575 if (Alignment > Value::MaximumAlignment)
1576 return Error(AlignLoc, "huge alignments are not supported yet");
1580 /// ParseOptionalDereferenceableBytes
1582 /// ::= 'dereferenceable' '(' 4 ')'
1583 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1585 if (!EatIfPresent(lltok::kw_dereferenceable))
1587 LocTy ParenLoc = Lex.getLoc();
1588 if (!EatIfPresent(lltok::lparen))
1589 return Error(ParenLoc, "expected '('");
1590 LocTy DerefLoc = Lex.getLoc();
1591 if (ParseUInt64(Bytes)) return true;
1592 ParenLoc = Lex.getLoc();
1593 if (!EatIfPresent(lltok::rparen))
1594 return Error(ParenLoc, "expected ')'");
1596 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1600 /// ParseOptionalCommaAlign
1604 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1606 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1607 bool &AteExtraComma) {
1608 AteExtraComma = false;
1609 while (EatIfPresent(lltok::comma)) {
1610 // Metadata at the end is an early exit.
1611 if (Lex.getKind() == lltok::MetadataVar) {
1612 AteExtraComma = true;
1616 if (Lex.getKind() != lltok::kw_align)
1617 return Error(Lex.getLoc(), "expected metadata or 'align'");
1619 if (ParseOptionalAlignment(Alignment)) return true;
1625 /// ParseScopeAndOrdering
1626 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1629 /// This sets Scope and Ordering to the parsed values.
1630 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1631 AtomicOrdering &Ordering) {
1635 Scope = CrossThread;
1636 if (EatIfPresent(lltok::kw_singlethread))
1637 Scope = SingleThread;
1639 return ParseOrdering(Ordering);
1643 /// ::= AtomicOrdering
1645 /// This sets Ordering to the parsed value.
1646 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1647 switch (Lex.getKind()) {
1648 default: return TokError("Expected ordering on atomic instruction");
1649 case lltok::kw_unordered: Ordering = Unordered; break;
1650 case lltok::kw_monotonic: Ordering = Monotonic; break;
1651 case lltok::kw_acquire: Ordering = Acquire; break;
1652 case lltok::kw_release: Ordering = Release; break;
1653 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1654 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1660 /// ParseOptionalStackAlignment
1662 /// ::= 'alignstack' '(' 4 ')'
1663 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1665 if (!EatIfPresent(lltok::kw_alignstack))
1667 LocTy ParenLoc = Lex.getLoc();
1668 if (!EatIfPresent(lltok::lparen))
1669 return Error(ParenLoc, "expected '('");
1670 LocTy AlignLoc = Lex.getLoc();
1671 if (ParseUInt32(Alignment)) return true;
1672 ParenLoc = Lex.getLoc();
1673 if (!EatIfPresent(lltok::rparen))
1674 return Error(ParenLoc, "expected ')'");
1675 if (!isPowerOf2_32(Alignment))
1676 return Error(AlignLoc, "stack alignment is not a power of two");
1680 /// ParseIndexList - This parses the index list for an insert/extractvalue
1681 /// instruction. This sets AteExtraComma in the case where we eat an extra
1682 /// comma at the end of the line and find that it is followed by metadata.
1683 /// Clients that don't allow metadata can call the version of this function that
1684 /// only takes one argument.
1687 /// ::= (',' uint32)+
1689 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1690 bool &AteExtraComma) {
1691 AteExtraComma = false;
1693 if (Lex.getKind() != lltok::comma)
1694 return TokError("expected ',' as start of index list");
1696 while (EatIfPresent(lltok::comma)) {
1697 if (Lex.getKind() == lltok::MetadataVar) {
1698 AteExtraComma = true;
1702 if (ParseUInt32(Idx)) return true;
1703 Indices.push_back(Idx);
1709 //===----------------------------------------------------------------------===//
1711 //===----------------------------------------------------------------------===//
1713 /// ParseType - Parse a type.
1714 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1715 SMLoc TypeLoc = Lex.getLoc();
1716 switch (Lex.getKind()) {
1718 return TokError("expected type");
1720 // Type ::= 'float' | 'void' (etc)
1721 Result = Lex.getTyVal();
1725 // Type ::= StructType
1726 if (ParseAnonStructType(Result, false))
1729 case lltok::lsquare:
1730 // Type ::= '[' ... ']'
1731 Lex.Lex(); // eat the lsquare.
1732 if (ParseArrayVectorType(Result, false))
1735 case lltok::less: // Either vector or packed struct.
1736 // Type ::= '<' ... '>'
1738 if (Lex.getKind() == lltok::lbrace) {
1739 if (ParseAnonStructType(Result, true) ||
1740 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1742 } else if (ParseArrayVectorType(Result, true))
1745 case lltok::LocalVar: {
1747 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1749 // If the type hasn't been defined yet, create a forward definition and
1750 // remember where that forward def'n was seen (in case it never is defined).
1752 Entry.first = StructType::create(Context, Lex.getStrVal());
1753 Entry.second = Lex.getLoc();
1755 Result = Entry.first;
1760 case lltok::LocalVarID: {
1762 if (Lex.getUIntVal() >= NumberedTypes.size())
1763 NumberedTypes.resize(Lex.getUIntVal()+1);
1764 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1766 // If the type hasn't been defined yet, create a forward definition and
1767 // remember where that forward def'n was seen (in case it never is defined).
1769 Entry.first = StructType::create(Context);
1770 Entry.second = Lex.getLoc();
1772 Result = Entry.first;
1778 // Parse the type suffixes.
1780 switch (Lex.getKind()) {
1783 if (!AllowVoid && Result->isVoidTy())
1784 return Error(TypeLoc, "void type only allowed for function results");
1787 // Type ::= Type '*'
1789 if (Result->isLabelTy())
1790 return TokError("basic block pointers are invalid");
1791 if (Result->isVoidTy())
1792 return TokError("pointers to void are invalid - use i8* instead");
1793 if (!PointerType::isValidElementType(Result))
1794 return TokError("pointer to this type is invalid");
1795 Result = PointerType::getUnqual(Result);
1799 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1800 case lltok::kw_addrspace: {
1801 if (Result->isLabelTy())
1802 return TokError("basic block pointers are invalid");
1803 if (Result->isVoidTy())
1804 return TokError("pointers to void are invalid; use i8* instead");
1805 if (!PointerType::isValidElementType(Result))
1806 return TokError("pointer to this type is invalid");
1808 if (ParseOptionalAddrSpace(AddrSpace) ||
1809 ParseToken(lltok::star, "expected '*' in address space"))
1812 Result = PointerType::get(Result, AddrSpace);
1816 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1818 if (ParseFunctionType(Result))
1825 /// ParseParameterList
1827 /// ::= '(' Arg (',' Arg)* ')'
1829 /// ::= Type OptionalAttributes Value OptionalAttributes
1830 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1831 PerFunctionState &PFS, bool IsMustTailCall,
1832 bool InVarArgsFunc) {
1833 if (ParseToken(lltok::lparen, "expected '(' in call"))
1836 unsigned AttrIndex = 1;
1837 while (Lex.getKind() != lltok::rparen) {
1838 // If this isn't the first argument, we need a comma.
1839 if (!ArgList.empty() &&
1840 ParseToken(lltok::comma, "expected ',' in argument list"))
1843 // Parse an ellipsis if this is a musttail call in a variadic function.
1844 if (Lex.getKind() == lltok::dotdotdot) {
1845 const char *Msg = "unexpected ellipsis in argument list for ";
1846 if (!IsMustTailCall)
1847 return TokError(Twine(Msg) + "non-musttail call");
1849 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1850 Lex.Lex(); // Lex the '...', it is purely for readability.
1851 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1854 // Parse the argument.
1856 Type *ArgTy = nullptr;
1857 AttrBuilder ArgAttrs;
1859 if (ParseType(ArgTy, ArgLoc))
1862 // Otherwise, handle normal operands.
1863 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1865 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1870 if (IsMustTailCall && InVarArgsFunc)
1871 return TokError("expected '...' at end of argument list for musttail call "
1872 "in varargs function");
1874 Lex.Lex(); // Lex the ')'.
1880 /// ParseArgumentList - Parse the argument list for a function type or function
1882 /// ::= '(' ArgTypeListI ')'
1886 /// ::= ArgTypeList ',' '...'
1887 /// ::= ArgType (',' ArgType)*
1889 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1892 assert(Lex.getKind() == lltok::lparen);
1893 Lex.Lex(); // eat the (.
1895 if (Lex.getKind() == lltok::rparen) {
1897 } else if (Lex.getKind() == lltok::dotdotdot) {
1901 LocTy TypeLoc = Lex.getLoc();
1902 Type *ArgTy = nullptr;
1906 if (ParseType(ArgTy) ||
1907 ParseOptionalParamAttrs(Attrs)) return true;
1909 if (ArgTy->isVoidTy())
1910 return Error(TypeLoc, "argument can not have void type");
1912 if (Lex.getKind() == lltok::LocalVar) {
1913 Name = Lex.getStrVal();
1917 if (!FunctionType::isValidArgumentType(ArgTy))
1918 return Error(TypeLoc, "invalid type for function argument");
1920 unsigned AttrIndex = 1;
1921 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1922 AttributeSet::get(ArgTy->getContext(),
1923 AttrIndex++, Attrs), Name));
1925 while (EatIfPresent(lltok::comma)) {
1926 // Handle ... at end of arg list.
1927 if (EatIfPresent(lltok::dotdotdot)) {
1932 // Otherwise must be an argument type.
1933 TypeLoc = Lex.getLoc();
1934 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1936 if (ArgTy->isVoidTy())
1937 return Error(TypeLoc, "argument can not have void type");
1939 if (Lex.getKind() == lltok::LocalVar) {
1940 Name = Lex.getStrVal();
1946 if (!ArgTy->isFirstClassType())
1947 return Error(TypeLoc, "invalid type for function argument");
1949 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1950 AttributeSet::get(ArgTy->getContext(),
1951 AttrIndex++, Attrs),
1956 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1959 /// ParseFunctionType
1960 /// ::= Type ArgumentList OptionalAttrs
1961 bool LLParser::ParseFunctionType(Type *&Result) {
1962 assert(Lex.getKind() == lltok::lparen);
1964 if (!FunctionType::isValidReturnType(Result))
1965 return TokError("invalid function return type");
1967 SmallVector<ArgInfo, 8> ArgList;
1969 if (ParseArgumentList(ArgList, isVarArg))
1972 // Reject names on the arguments lists.
1973 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1974 if (!ArgList[i].Name.empty())
1975 return Error(ArgList[i].Loc, "argument name invalid in function type");
1976 if (ArgList[i].Attrs.hasAttributes(i + 1))
1977 return Error(ArgList[i].Loc,
1978 "argument attributes invalid in function type");
1981 SmallVector<Type*, 16> ArgListTy;
1982 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1983 ArgListTy.push_back(ArgList[i].Ty);
1985 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1989 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1991 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1992 SmallVector<Type*, 8> Elts;
1993 if (ParseStructBody(Elts)) return true;
1995 Result = StructType::get(Context, Elts, Packed);
1999 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2000 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2001 std::pair<Type*, LocTy> &Entry,
2003 // If the type was already defined, diagnose the redefinition.
2004 if (Entry.first && !Entry.second.isValid())
2005 return Error(TypeLoc, "redefinition of type");
2007 // If we have opaque, just return without filling in the definition for the
2008 // struct. This counts as a definition as far as the .ll file goes.
2009 if (EatIfPresent(lltok::kw_opaque)) {
2010 // This type is being defined, so clear the location to indicate this.
2011 Entry.second = SMLoc();
2013 // If this type number has never been uttered, create it.
2015 Entry.first = StructType::create(Context, Name);
2016 ResultTy = Entry.first;
2020 // If the type starts with '<', then it is either a packed struct or a vector.
2021 bool isPacked = EatIfPresent(lltok::less);
2023 // If we don't have a struct, then we have a random type alias, which we
2024 // accept for compatibility with old files. These types are not allowed to be
2025 // forward referenced and not allowed to be recursive.
2026 if (Lex.getKind() != lltok::lbrace) {
2028 return Error(TypeLoc, "forward references to non-struct type");
2032 return ParseArrayVectorType(ResultTy, true);
2033 return ParseType(ResultTy);
2036 // This type is being defined, so clear the location to indicate this.
2037 Entry.second = SMLoc();
2039 // If this type number has never been uttered, create it.
2041 Entry.first = StructType::create(Context, Name);
2043 StructType *STy = cast<StructType>(Entry.first);
2045 SmallVector<Type*, 8> Body;
2046 if (ParseStructBody(Body) ||
2047 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2050 STy->setBody(Body, isPacked);
2056 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2059 /// ::= '{' Type (',' Type)* '}'
2060 /// ::= '<' '{' '}' '>'
2061 /// ::= '<' '{' Type (',' Type)* '}' '>'
2062 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2063 assert(Lex.getKind() == lltok::lbrace);
2064 Lex.Lex(); // Consume the '{'
2066 // Handle the empty struct.
2067 if (EatIfPresent(lltok::rbrace))
2070 LocTy EltTyLoc = Lex.getLoc();
2072 if (ParseType(Ty)) return true;
2075 if (!StructType::isValidElementType(Ty))
2076 return Error(EltTyLoc, "invalid element type for struct");
2078 while (EatIfPresent(lltok::comma)) {
2079 EltTyLoc = Lex.getLoc();
2080 if (ParseType(Ty)) return true;
2082 if (!StructType::isValidElementType(Ty))
2083 return Error(EltTyLoc, "invalid element type for struct");
2088 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2091 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2092 /// token has already been consumed.
2094 /// ::= '[' APSINTVAL 'x' Types ']'
2095 /// ::= '<' APSINTVAL 'x' Types '>'
2096 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2097 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2098 Lex.getAPSIntVal().getBitWidth() > 64)
2099 return TokError("expected number in address space");
2101 LocTy SizeLoc = Lex.getLoc();
2102 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2105 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2108 LocTy TypeLoc = Lex.getLoc();
2109 Type *EltTy = nullptr;
2110 if (ParseType(EltTy)) return true;
2112 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2113 "expected end of sequential type"))
2118 return Error(SizeLoc, "zero element vector is illegal");
2119 if ((unsigned)Size != Size)
2120 return Error(SizeLoc, "size too large for vector");
2121 if (!VectorType::isValidElementType(EltTy))
2122 return Error(TypeLoc, "invalid vector element type");
2123 Result = VectorType::get(EltTy, unsigned(Size));
2125 if (!ArrayType::isValidElementType(EltTy))
2126 return Error(TypeLoc, "invalid array element type");
2127 Result = ArrayType::get(EltTy, Size);
2132 //===----------------------------------------------------------------------===//
2133 // Function Semantic Analysis.
2134 //===----------------------------------------------------------------------===//
2136 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2138 : P(p), F(f), FunctionNumber(functionNumber) {
2140 // Insert unnamed arguments into the NumberedVals list.
2141 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2144 NumberedVals.push_back(AI);
2147 LLParser::PerFunctionState::~PerFunctionState() {
2148 // If there were any forward referenced non-basicblock values, delete them.
2149 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2150 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2151 if (!isa<BasicBlock>(I->second.first)) {
2152 I->second.first->replaceAllUsesWith(
2153 UndefValue::get(I->second.first->getType()));
2154 delete I->second.first;
2155 I->second.first = nullptr;
2158 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2159 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2160 if (!isa<BasicBlock>(I->second.first)) {
2161 I->second.first->replaceAllUsesWith(
2162 UndefValue::get(I->second.first->getType()));
2163 delete I->second.first;
2164 I->second.first = nullptr;
2168 bool LLParser::PerFunctionState::FinishFunction() {
2169 if (!ForwardRefVals.empty())
2170 return P.Error(ForwardRefVals.begin()->second.second,
2171 "use of undefined value '%" + ForwardRefVals.begin()->first +
2173 if (!ForwardRefValIDs.empty())
2174 return P.Error(ForwardRefValIDs.begin()->second.second,
2175 "use of undefined value '%" +
2176 Twine(ForwardRefValIDs.begin()->first) + "'");
2181 /// GetVal - Get a value with the specified name or ID, creating a
2182 /// forward reference record if needed. This can return null if the value
2183 /// exists but does not have the right type.
2184 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2185 Type *Ty, LocTy Loc) {
2186 // Look this name up in the normal function symbol table.
2187 Value *Val = F.getValueSymbolTable().lookup(Name);
2189 // If this is a forward reference for the value, see if we already created a
2190 // forward ref record.
2192 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2193 I = ForwardRefVals.find(Name);
2194 if (I != ForwardRefVals.end())
2195 Val = I->second.first;
2198 // If we have the value in the symbol table or fwd-ref table, return it.
2200 if (Val->getType() == Ty) return Val;
2201 if (Ty->isLabelTy())
2202 P.Error(Loc, "'%" + Name + "' is not a basic block");
2204 P.Error(Loc, "'%" + Name + "' defined with type '" +
2205 getTypeString(Val->getType()) + "'");
2209 // Don't make placeholders with invalid type.
2210 if (!Ty->isFirstClassType()) {
2211 P.Error(Loc, "invalid use of a non-first-class type");
2215 // Otherwise, create a new forward reference for this value and remember it.
2217 if (Ty->isLabelTy())
2218 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2220 FwdVal = new Argument(Ty, Name);
2222 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2226 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2228 // Look this name up in the normal function symbol table.
2229 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2231 // If this is a forward reference for the value, see if we already created a
2232 // forward ref record.
2234 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2235 I = ForwardRefValIDs.find(ID);
2236 if (I != ForwardRefValIDs.end())
2237 Val = I->second.first;
2240 // If we have the value in the symbol table or fwd-ref table, return it.
2242 if (Val->getType() == Ty) return Val;
2243 if (Ty->isLabelTy())
2244 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2246 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2247 getTypeString(Val->getType()) + "'");
2251 if (!Ty->isFirstClassType()) {
2252 P.Error(Loc, "invalid use of a non-first-class type");
2256 // Otherwise, create a new forward reference for this value and remember it.
2258 if (Ty->isLabelTy())
2259 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2261 FwdVal = new Argument(Ty);
2263 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2267 /// SetInstName - After an instruction is parsed and inserted into its
2268 /// basic block, this installs its name.
2269 bool LLParser::PerFunctionState::SetInstName(int NameID,
2270 const std::string &NameStr,
2271 LocTy NameLoc, Instruction *Inst) {
2272 // If this instruction has void type, it cannot have a name or ID specified.
2273 if (Inst->getType()->isVoidTy()) {
2274 if (NameID != -1 || !NameStr.empty())
2275 return P.Error(NameLoc, "instructions returning void cannot have a name");
2279 // If this was a numbered instruction, verify that the instruction is the
2280 // expected value and resolve any forward references.
2281 if (NameStr.empty()) {
2282 // If neither a name nor an ID was specified, just use the next ID.
2284 NameID = NumberedVals.size();
2286 if (unsigned(NameID) != NumberedVals.size())
2287 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2288 Twine(NumberedVals.size()) + "'");
2290 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2291 ForwardRefValIDs.find(NameID);
2292 if (FI != ForwardRefValIDs.end()) {
2293 if (FI->second.first->getType() != Inst->getType())
2294 return P.Error(NameLoc, "instruction forward referenced with type '" +
2295 getTypeString(FI->second.first->getType()) + "'");
2296 FI->second.first->replaceAllUsesWith(Inst);
2297 delete FI->second.first;
2298 ForwardRefValIDs.erase(FI);
2301 NumberedVals.push_back(Inst);
2305 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2306 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2307 FI = ForwardRefVals.find(NameStr);
2308 if (FI != ForwardRefVals.end()) {
2309 if (FI->second.first->getType() != Inst->getType())
2310 return P.Error(NameLoc, "instruction forward referenced with type '" +
2311 getTypeString(FI->second.first->getType()) + "'");
2312 FI->second.first->replaceAllUsesWith(Inst);
2313 delete FI->second.first;
2314 ForwardRefVals.erase(FI);
2317 // Set the name on the instruction.
2318 Inst->setName(NameStr);
2320 if (Inst->getName() != NameStr)
2321 return P.Error(NameLoc, "multiple definition of local value named '" +
2326 /// GetBB - Get a basic block with the specified name or ID, creating a
2327 /// forward reference record if needed.
2328 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2330 return cast_or_null<BasicBlock>(GetVal(Name,
2331 Type::getLabelTy(F.getContext()), Loc));
2334 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2335 return cast_or_null<BasicBlock>(GetVal(ID,
2336 Type::getLabelTy(F.getContext()), Loc));
2339 /// DefineBB - Define the specified basic block, which is either named or
2340 /// unnamed. If there is an error, this returns null otherwise it returns
2341 /// the block being defined.
2342 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2346 BB = GetBB(NumberedVals.size(), Loc);
2348 BB = GetBB(Name, Loc);
2349 if (!BB) return nullptr; // Already diagnosed error.
2351 // Move the block to the end of the function. Forward ref'd blocks are
2352 // inserted wherever they happen to be referenced.
2353 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2355 // Remove the block from forward ref sets.
2357 ForwardRefValIDs.erase(NumberedVals.size());
2358 NumberedVals.push_back(BB);
2360 // BB forward references are already in the function symbol table.
2361 ForwardRefVals.erase(Name);
2367 //===----------------------------------------------------------------------===//
2369 //===----------------------------------------------------------------------===//
2371 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2372 /// type implied. For example, if we parse "4" we don't know what integer type
2373 /// it has. The value will later be combined with its type and checked for
2374 /// sanity. PFS is used to convert function-local operands of metadata (since
2375 /// metadata operands are not just parsed here but also converted to values).
2376 /// PFS can be null when we are not parsing metadata values inside a function.
2377 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2378 ID.Loc = Lex.getLoc();
2379 switch (Lex.getKind()) {
2380 default: return TokError("expected value token");
2381 case lltok::GlobalID: // @42
2382 ID.UIntVal = Lex.getUIntVal();
2383 ID.Kind = ValID::t_GlobalID;
2385 case lltok::GlobalVar: // @foo
2386 ID.StrVal = Lex.getStrVal();
2387 ID.Kind = ValID::t_GlobalName;
2389 case lltok::LocalVarID: // %42
2390 ID.UIntVal = Lex.getUIntVal();
2391 ID.Kind = ValID::t_LocalID;
2393 case lltok::LocalVar: // %foo
2394 ID.StrVal = Lex.getStrVal();
2395 ID.Kind = ValID::t_LocalName;
2397 case lltok::exclaim: // !42, !{...}, or !"foo"
2398 return ParseMetadataValue(ID, PFS);
2400 ID.APSIntVal = Lex.getAPSIntVal();
2401 ID.Kind = ValID::t_APSInt;
2403 case lltok::APFloat:
2404 ID.APFloatVal = Lex.getAPFloatVal();
2405 ID.Kind = ValID::t_APFloat;
2407 case lltok::kw_true:
2408 ID.ConstantVal = ConstantInt::getTrue(Context);
2409 ID.Kind = ValID::t_Constant;
2411 case lltok::kw_false:
2412 ID.ConstantVal = ConstantInt::getFalse(Context);
2413 ID.Kind = ValID::t_Constant;
2415 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2416 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2417 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2419 case lltok::lbrace: {
2420 // ValID ::= '{' ConstVector '}'
2422 SmallVector<Constant*, 16> Elts;
2423 if (ParseGlobalValueVector(Elts) ||
2424 ParseToken(lltok::rbrace, "expected end of struct constant"))
2427 ID.ConstantStructElts = new Constant*[Elts.size()];
2428 ID.UIntVal = Elts.size();
2429 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2430 ID.Kind = ValID::t_ConstantStruct;
2434 // ValID ::= '<' ConstVector '>' --> Vector.
2435 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2437 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2439 SmallVector<Constant*, 16> Elts;
2440 LocTy FirstEltLoc = Lex.getLoc();
2441 if (ParseGlobalValueVector(Elts) ||
2443 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2444 ParseToken(lltok::greater, "expected end of constant"))
2447 if (isPackedStruct) {
2448 ID.ConstantStructElts = new Constant*[Elts.size()];
2449 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2450 ID.UIntVal = Elts.size();
2451 ID.Kind = ValID::t_PackedConstantStruct;
2456 return Error(ID.Loc, "constant vector must not be empty");
2458 if (!Elts[0]->getType()->isIntegerTy() &&
2459 !Elts[0]->getType()->isFloatingPointTy() &&
2460 !Elts[0]->getType()->isPointerTy())
2461 return Error(FirstEltLoc,
2462 "vector elements must have integer, pointer or floating point type");
2464 // Verify that all the vector elements have the same type.
2465 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2466 if (Elts[i]->getType() != Elts[0]->getType())
2467 return Error(FirstEltLoc,
2468 "vector element #" + Twine(i) +
2469 " is not of type '" + getTypeString(Elts[0]->getType()));
2471 ID.ConstantVal = ConstantVector::get(Elts);
2472 ID.Kind = ValID::t_Constant;
2475 case lltok::lsquare: { // Array Constant
2477 SmallVector<Constant*, 16> Elts;
2478 LocTy FirstEltLoc = Lex.getLoc();
2479 if (ParseGlobalValueVector(Elts) ||
2480 ParseToken(lltok::rsquare, "expected end of array constant"))
2483 // Handle empty element.
2485 // Use undef instead of an array because it's inconvenient to determine
2486 // the element type at this point, there being no elements to examine.
2487 ID.Kind = ValID::t_EmptyArray;
2491 if (!Elts[0]->getType()->isFirstClassType())
2492 return Error(FirstEltLoc, "invalid array element type: " +
2493 getTypeString(Elts[0]->getType()));
2495 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2497 // Verify all elements are correct type!
2498 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2499 if (Elts[i]->getType() != Elts[0]->getType())
2500 return Error(FirstEltLoc,
2501 "array element #" + Twine(i) +
2502 " is not of type '" + getTypeString(Elts[0]->getType()));
2505 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2506 ID.Kind = ValID::t_Constant;
2509 case lltok::kw_c: // c "foo"
2511 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2513 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2514 ID.Kind = ValID::t_Constant;
2517 case lltok::kw_asm: {
2518 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2520 bool HasSideEffect, AlignStack, AsmDialect;
2522 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2523 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2524 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2525 ParseStringConstant(ID.StrVal) ||
2526 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2527 ParseToken(lltok::StringConstant, "expected constraint string"))
2529 ID.StrVal2 = Lex.getStrVal();
2530 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2531 (unsigned(AsmDialect)<<2);
2532 ID.Kind = ValID::t_InlineAsm;
2536 case lltok::kw_blockaddress: {
2537 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2542 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2544 ParseToken(lltok::comma, "expected comma in block address expression")||
2545 ParseValID(Label) ||
2546 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2549 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2550 return Error(Fn.Loc, "expected function name in blockaddress");
2551 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2552 return Error(Label.Loc, "expected basic block name in blockaddress");
2554 // Try to find the function (but skip it if it's forward-referenced).
2555 GlobalValue *GV = nullptr;
2556 if (Fn.Kind == ValID::t_GlobalID) {
2557 if (Fn.UIntVal < NumberedVals.size())
2558 GV = NumberedVals[Fn.UIntVal];
2559 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2560 GV = M->getNamedValue(Fn.StrVal);
2562 Function *F = nullptr;
2564 // Confirm that it's actually a function with a definition.
2565 if (!isa<Function>(GV))
2566 return Error(Fn.Loc, "expected function name in blockaddress");
2567 F = cast<Function>(GV);
2568 if (F->isDeclaration())
2569 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2573 // Make a global variable as a placeholder for this reference.
2574 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2576 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2577 GlobalValue::InternalLinkage, nullptr, "");
2578 ID.ConstantVal = FwdRef;
2579 ID.Kind = ValID::t_Constant;
2583 // We found the function; now find the basic block. Don't use PFS, since we
2584 // might be inside a constant expression.
2586 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2587 if (Label.Kind == ValID::t_LocalID)
2588 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2590 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2592 return Error(Label.Loc, "referenced value is not a basic block");
2594 if (Label.Kind == ValID::t_LocalID)
2595 return Error(Label.Loc, "cannot take address of numeric label after "
2596 "the function is defined");
2597 BB = dyn_cast_or_null<BasicBlock>(
2598 F->getValueSymbolTable().lookup(Label.StrVal));
2600 return Error(Label.Loc, "referenced value is not a basic block");
2603 ID.ConstantVal = BlockAddress::get(F, BB);
2604 ID.Kind = ValID::t_Constant;
2608 case lltok::kw_trunc:
2609 case lltok::kw_zext:
2610 case lltok::kw_sext:
2611 case lltok::kw_fptrunc:
2612 case lltok::kw_fpext:
2613 case lltok::kw_bitcast:
2614 case lltok::kw_addrspacecast:
2615 case lltok::kw_uitofp:
2616 case lltok::kw_sitofp:
2617 case lltok::kw_fptoui:
2618 case lltok::kw_fptosi:
2619 case lltok::kw_inttoptr:
2620 case lltok::kw_ptrtoint: {
2621 unsigned Opc = Lex.getUIntVal();
2622 Type *DestTy = nullptr;
2625 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2626 ParseGlobalTypeAndValue(SrcVal) ||
2627 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2628 ParseType(DestTy) ||
2629 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2631 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2632 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2633 getTypeString(SrcVal->getType()) + "' to '" +
2634 getTypeString(DestTy) + "'");
2635 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2637 ID.Kind = ValID::t_Constant;
2640 case lltok::kw_extractvalue: {
2643 SmallVector<unsigned, 4> Indices;
2644 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2645 ParseGlobalTypeAndValue(Val) ||
2646 ParseIndexList(Indices) ||
2647 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2650 if (!Val->getType()->isAggregateType())
2651 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2652 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2653 return Error(ID.Loc, "invalid indices for extractvalue");
2654 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2655 ID.Kind = ValID::t_Constant;
2658 case lltok::kw_insertvalue: {
2660 Constant *Val0, *Val1;
2661 SmallVector<unsigned, 4> Indices;
2662 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2663 ParseGlobalTypeAndValue(Val0) ||
2664 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2665 ParseGlobalTypeAndValue(Val1) ||
2666 ParseIndexList(Indices) ||
2667 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2669 if (!Val0->getType()->isAggregateType())
2670 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2671 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2672 return Error(ID.Loc, "invalid indices for insertvalue");
2673 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2674 ID.Kind = ValID::t_Constant;
2677 case lltok::kw_icmp:
2678 case lltok::kw_fcmp: {
2679 unsigned PredVal, Opc = Lex.getUIntVal();
2680 Constant *Val0, *Val1;
2682 if (ParseCmpPredicate(PredVal, Opc) ||
2683 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2684 ParseGlobalTypeAndValue(Val0) ||
2685 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2686 ParseGlobalTypeAndValue(Val1) ||
2687 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2690 if (Val0->getType() != Val1->getType())
2691 return Error(ID.Loc, "compare operands must have the same type");
2693 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2695 if (Opc == Instruction::FCmp) {
2696 if (!Val0->getType()->isFPOrFPVectorTy())
2697 return Error(ID.Loc, "fcmp requires floating point operands");
2698 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2700 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2701 if (!Val0->getType()->isIntOrIntVectorTy() &&
2702 !Val0->getType()->getScalarType()->isPointerTy())
2703 return Error(ID.Loc, "icmp requires pointer or integer operands");
2704 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2706 ID.Kind = ValID::t_Constant;
2710 // Binary Operators.
2712 case lltok::kw_fadd:
2714 case lltok::kw_fsub:
2716 case lltok::kw_fmul:
2717 case lltok::kw_udiv:
2718 case lltok::kw_sdiv:
2719 case lltok::kw_fdiv:
2720 case lltok::kw_urem:
2721 case lltok::kw_srem:
2722 case lltok::kw_frem:
2724 case lltok::kw_lshr:
2725 case lltok::kw_ashr: {
2729 unsigned Opc = Lex.getUIntVal();
2730 Constant *Val0, *Val1;
2732 LocTy ModifierLoc = Lex.getLoc();
2733 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2734 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2735 if (EatIfPresent(lltok::kw_nuw))
2737 if (EatIfPresent(lltok::kw_nsw)) {
2739 if (EatIfPresent(lltok::kw_nuw))
2742 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2743 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2744 if (EatIfPresent(lltok::kw_exact))
2747 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2748 ParseGlobalTypeAndValue(Val0) ||
2749 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2750 ParseGlobalTypeAndValue(Val1) ||
2751 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2753 if (Val0->getType() != Val1->getType())
2754 return Error(ID.Loc, "operands of constexpr must have same type");
2755 if (!Val0->getType()->isIntOrIntVectorTy()) {
2757 return Error(ModifierLoc, "nuw only applies to integer operations");
2759 return Error(ModifierLoc, "nsw only applies to integer operations");
2761 // Check that the type is valid for the operator.
2763 case Instruction::Add:
2764 case Instruction::Sub:
2765 case Instruction::Mul:
2766 case Instruction::UDiv:
2767 case Instruction::SDiv:
2768 case Instruction::URem:
2769 case Instruction::SRem:
2770 case Instruction::Shl:
2771 case Instruction::AShr:
2772 case Instruction::LShr:
2773 if (!Val0->getType()->isIntOrIntVectorTy())
2774 return Error(ID.Loc, "constexpr requires integer operands");
2776 case Instruction::FAdd:
2777 case Instruction::FSub:
2778 case Instruction::FMul:
2779 case Instruction::FDiv:
2780 case Instruction::FRem:
2781 if (!Val0->getType()->isFPOrFPVectorTy())
2782 return Error(ID.Loc, "constexpr requires fp operands");
2784 default: llvm_unreachable("Unknown binary operator!");
2787 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2788 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2789 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2790 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2792 ID.Kind = ValID::t_Constant;
2796 // Logical Operations
2799 case lltok::kw_xor: {
2800 unsigned Opc = Lex.getUIntVal();
2801 Constant *Val0, *Val1;
2803 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2804 ParseGlobalTypeAndValue(Val0) ||
2805 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2806 ParseGlobalTypeAndValue(Val1) ||
2807 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2809 if (Val0->getType() != Val1->getType())
2810 return Error(ID.Loc, "operands of constexpr must have same type");
2811 if (!Val0->getType()->isIntOrIntVectorTy())
2812 return Error(ID.Loc,
2813 "constexpr requires integer or integer vector operands");
2814 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2815 ID.Kind = ValID::t_Constant;
2819 case lltok::kw_getelementptr:
2820 case lltok::kw_shufflevector:
2821 case lltok::kw_insertelement:
2822 case lltok::kw_extractelement:
2823 case lltok::kw_select: {
2824 unsigned Opc = Lex.getUIntVal();
2825 SmallVector<Constant*, 16> Elts;
2826 bool InBounds = false;
2828 if (Opc == Instruction::GetElementPtr)
2829 InBounds = EatIfPresent(lltok::kw_inbounds);
2830 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2831 ParseGlobalValueVector(Elts) ||
2832 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2835 if (Opc == Instruction::GetElementPtr) {
2836 if (Elts.size() == 0 ||
2837 !Elts[0]->getType()->getScalarType()->isPointerTy())
2838 return Error(ID.Loc, "getelementptr requires pointer operand");
2840 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2841 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2842 return Error(ID.Loc, "invalid indices for getelementptr");
2843 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2845 } else if (Opc == Instruction::Select) {
2846 if (Elts.size() != 3)
2847 return Error(ID.Loc, "expected three operands to select");
2848 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2850 return Error(ID.Loc, Reason);
2851 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2852 } else if (Opc == Instruction::ShuffleVector) {
2853 if (Elts.size() != 3)
2854 return Error(ID.Loc, "expected three operands to shufflevector");
2855 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2856 return Error(ID.Loc, "invalid operands to shufflevector");
2858 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2859 } else if (Opc == Instruction::ExtractElement) {
2860 if (Elts.size() != 2)
2861 return Error(ID.Loc, "expected two operands to extractelement");
2862 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2863 return Error(ID.Loc, "invalid extractelement operands");
2864 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2866 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2867 if (Elts.size() != 3)
2868 return Error(ID.Loc, "expected three operands to insertelement");
2869 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2870 return Error(ID.Loc, "invalid insertelement operands");
2872 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2875 ID.Kind = ValID::t_Constant;
2884 /// ParseGlobalValue - Parse a global value with the specified type.
2885 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2889 bool Parsed = ParseValID(ID) ||
2890 ConvertValIDToValue(Ty, ID, V, nullptr);
2891 if (V && !(C = dyn_cast<Constant>(V)))
2892 return Error(ID.Loc, "global values must be constants");
2896 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2898 return ParseType(Ty) ||
2899 ParseGlobalValue(Ty, V);
2902 bool LLParser::parseOptionalComdat(Comdat *&C) {
2904 if (!EatIfPresent(lltok::kw_comdat))
2906 if (Lex.getKind() != lltok::ComdatVar)
2907 return TokError("expected comdat variable");
2908 LocTy Loc = Lex.getLoc();
2909 StringRef Name = Lex.getStrVal();
2910 C = getComdat(Name, Loc);
2915 /// ParseGlobalValueVector
2917 /// ::= TypeAndValue (',' TypeAndValue)*
2918 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2920 if (Lex.getKind() == lltok::rbrace ||
2921 Lex.getKind() == lltok::rsquare ||
2922 Lex.getKind() == lltok::greater ||
2923 Lex.getKind() == lltok::rparen)
2927 if (ParseGlobalTypeAndValue(C)) return true;
2930 while (EatIfPresent(lltok::comma)) {
2931 if (ParseGlobalTypeAndValue(C)) return true;
2938 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2939 assert(Lex.getKind() == lltok::lbrace);
2942 SmallVector<Value*, 16> Elts;
2943 if (ParseMDNodeVector(Elts, PFS) ||
2944 ParseToken(lltok::rbrace, "expected end of metadata node"))
2947 ID.MDNodeVal = MDNode::get(Context, Elts);
2948 ID.Kind = ValID::t_MDNode;
2952 /// ParseMetadataValue
2956 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2957 assert(Lex.getKind() == lltok::exclaim);
2962 if (Lex.getKind() == lltok::lbrace)
2963 return ParseMetadataListValue(ID, PFS);
2965 // Standalone metadata reference
2967 if (Lex.getKind() == lltok::APSInt) {
2968 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2969 ID.Kind = ValID::t_MDNode;
2974 // ::= '!' STRINGCONSTANT
2975 if (ParseMDString(ID.MDStringVal)) return true;
2976 ID.Kind = ValID::t_MDString;
2981 //===----------------------------------------------------------------------===//
2982 // Function Parsing.
2983 //===----------------------------------------------------------------------===//
2985 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2986 PerFunctionState *PFS) {
2987 if (Ty->isFunctionTy())
2988 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2991 case ValID::t_LocalID:
2992 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2993 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2994 return V == nullptr;
2995 case ValID::t_LocalName:
2996 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2997 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2998 return V == nullptr;
2999 case ValID::t_InlineAsm: {
3000 PointerType *PTy = dyn_cast<PointerType>(Ty);
3002 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3003 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3004 return Error(ID.Loc, "invalid type for inline asm constraint string");
3005 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3006 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3009 case ValID::t_MDNode:
3010 if (!Ty->isMetadataTy())
3011 return Error(ID.Loc, "metadata value must have metadata type");
3014 case ValID::t_MDString:
3015 if (!Ty->isMetadataTy())
3016 return Error(ID.Loc, "metadata value must have metadata type");
3019 case ValID::t_GlobalName:
3020 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3021 return V == nullptr;
3022 case ValID::t_GlobalID:
3023 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3024 return V == nullptr;
3025 case ValID::t_APSInt:
3026 if (!Ty->isIntegerTy())
3027 return Error(ID.Loc, "integer constant must have integer type");
3028 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3029 V = ConstantInt::get(Context, ID.APSIntVal);
3031 case ValID::t_APFloat:
3032 if (!Ty->isFloatingPointTy() ||
3033 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3034 return Error(ID.Loc, "floating point constant invalid for type");
3036 // The lexer has no type info, so builds all half, float, and double FP
3037 // constants as double. Fix this here. Long double does not need this.
3038 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3041 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3043 else if (Ty->isFloatTy())
3044 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3047 V = ConstantFP::get(Context, ID.APFloatVal);
3049 if (V->getType() != Ty)
3050 return Error(ID.Loc, "floating point constant does not have type '" +
3051 getTypeString(Ty) + "'");
3055 if (!Ty->isPointerTy())
3056 return Error(ID.Loc, "null must be a pointer type");
3057 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3059 case ValID::t_Undef:
3060 // FIXME: LabelTy should not be a first-class type.
3061 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3062 return Error(ID.Loc, "invalid type for undef constant");
3063 V = UndefValue::get(Ty);
3065 case ValID::t_EmptyArray:
3066 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3067 return Error(ID.Loc, "invalid empty array initializer");
3068 V = UndefValue::get(Ty);
3071 // FIXME: LabelTy should not be a first-class type.
3072 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3073 return Error(ID.Loc, "invalid type for null constant");
3074 V = Constant::getNullValue(Ty);
3076 case ValID::t_Constant:
3077 if (ID.ConstantVal->getType() != Ty)
3078 return Error(ID.Loc, "constant expression type mismatch");
3082 case ValID::t_ConstantStruct:
3083 case ValID::t_PackedConstantStruct:
3084 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3085 if (ST->getNumElements() != ID.UIntVal)
3086 return Error(ID.Loc,
3087 "initializer with struct type has wrong # elements");
3088 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3089 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3091 // Verify that the elements are compatible with the structtype.
3092 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3093 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3094 return Error(ID.Loc, "element " + Twine(i) +
3095 " of struct initializer doesn't match struct element type");
3097 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3100 return Error(ID.Loc, "constant expression type mismatch");
3103 llvm_unreachable("Invalid ValID");
3106 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3109 return ParseValID(ID, PFS) ||
3110 ConvertValIDToValue(Ty, ID, V, PFS);
3113 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3115 return ParseType(Ty) ||
3116 ParseValue(Ty, V, PFS);
3119 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3120 PerFunctionState &PFS) {
3123 if (ParseTypeAndValue(V, PFS)) return true;
3124 if (!isa<BasicBlock>(V))
3125 return Error(Loc, "expected a basic block");
3126 BB = cast<BasicBlock>(V);
3132 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3133 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3134 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3135 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3136 // Parse the linkage.
3137 LocTy LinkageLoc = Lex.getLoc();
3140 unsigned Visibility;
3141 unsigned DLLStorageClass;
3142 AttrBuilder RetAttrs;
3144 Type *RetType = nullptr;
3145 LocTy RetTypeLoc = Lex.getLoc();
3146 if (ParseOptionalLinkage(Linkage) ||
3147 ParseOptionalVisibility(Visibility) ||
3148 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3149 ParseOptionalCallingConv(CC) ||
3150 ParseOptionalReturnAttrs(RetAttrs) ||
3151 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3154 // Verify that the linkage is ok.
3155 switch ((GlobalValue::LinkageTypes)Linkage) {
3156 case GlobalValue::ExternalLinkage:
3157 break; // always ok.
3158 case GlobalValue::ExternalWeakLinkage:
3160 return Error(LinkageLoc, "invalid linkage for function definition");
3162 case GlobalValue::PrivateLinkage:
3163 case GlobalValue::InternalLinkage:
3164 case GlobalValue::AvailableExternallyLinkage:
3165 case GlobalValue::LinkOnceAnyLinkage:
3166 case GlobalValue::LinkOnceODRLinkage:
3167 case GlobalValue::WeakAnyLinkage:
3168 case GlobalValue::WeakODRLinkage:
3170 return Error(LinkageLoc, "invalid linkage for function declaration");
3172 case GlobalValue::AppendingLinkage:
3173 case GlobalValue::CommonLinkage:
3174 return Error(LinkageLoc, "invalid function linkage type");
3177 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3178 return Error(LinkageLoc,
3179 "symbol with local linkage must have default visibility");
3181 if (!FunctionType::isValidReturnType(RetType))
3182 return Error(RetTypeLoc, "invalid function return type");
3184 LocTy NameLoc = Lex.getLoc();
3186 std::string FunctionName;
3187 if (Lex.getKind() == lltok::GlobalVar) {
3188 FunctionName = Lex.getStrVal();
3189 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3190 unsigned NameID = Lex.getUIntVal();
3192 if (NameID != NumberedVals.size())
3193 return TokError("function expected to be numbered '%" +
3194 Twine(NumberedVals.size()) + "'");
3196 return TokError("expected function name");
3201 if (Lex.getKind() != lltok::lparen)
3202 return TokError("expected '(' in function argument list");
3204 SmallVector<ArgInfo, 8> ArgList;
3206 AttrBuilder FuncAttrs;
3207 std::vector<unsigned> FwdRefAttrGrps;
3209 std::string Section;
3213 LocTy UnnamedAddrLoc;
3214 Constant *Prefix = nullptr;
3215 Constant *Prologue = nullptr;
3218 if (ParseArgumentList(ArgList, isVarArg) ||
3219 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3221 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3223 (EatIfPresent(lltok::kw_section) &&
3224 ParseStringConstant(Section)) ||
3225 parseOptionalComdat(C) ||
3226 ParseOptionalAlignment(Alignment) ||
3227 (EatIfPresent(lltok::kw_gc) &&
3228 ParseStringConstant(GC)) ||
3229 (EatIfPresent(lltok::kw_prefix) &&
3230 ParseGlobalTypeAndValue(Prefix)) ||
3231 (EatIfPresent(lltok::kw_prologue) &&
3232 ParseGlobalTypeAndValue(Prologue)))
3235 if (FuncAttrs.contains(Attribute::Builtin))
3236 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3238 // If the alignment was parsed as an attribute, move to the alignment field.
3239 if (FuncAttrs.hasAlignmentAttr()) {
3240 Alignment = FuncAttrs.getAlignment();
3241 FuncAttrs.removeAttribute(Attribute::Alignment);
3244 // Okay, if we got here, the function is syntactically valid. Convert types
3245 // and do semantic checks.
3246 std::vector<Type*> ParamTypeList;
3247 SmallVector<AttributeSet, 8> Attrs;
3249 if (RetAttrs.hasAttributes())
3250 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3251 AttributeSet::ReturnIndex,
3254 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3255 ParamTypeList.push_back(ArgList[i].Ty);
3256 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3257 AttrBuilder B(ArgList[i].Attrs, i + 1);
3258 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3262 if (FuncAttrs.hasAttributes())
3263 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3264 AttributeSet::FunctionIndex,
3267 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3269 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3270 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3273 FunctionType::get(RetType, ParamTypeList, isVarArg);
3274 PointerType *PFT = PointerType::getUnqual(FT);
3277 if (!FunctionName.empty()) {
3278 // If this was a definition of a forward reference, remove the definition
3279 // from the forward reference table and fill in the forward ref.
3280 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3281 ForwardRefVals.find(FunctionName);
3282 if (FRVI != ForwardRefVals.end()) {
3283 Fn = M->getFunction(FunctionName);
3285 return Error(FRVI->second.second, "invalid forward reference to "
3286 "function as global value!");
3287 if (Fn->getType() != PFT)
3288 return Error(FRVI->second.second, "invalid forward reference to "
3289 "function '" + FunctionName + "' with wrong type!");
3291 ForwardRefVals.erase(FRVI);
3292 } else if ((Fn = M->getFunction(FunctionName))) {
3293 // Reject redefinitions.
3294 return Error(NameLoc, "invalid redefinition of function '" +
3295 FunctionName + "'");
3296 } else if (M->getNamedValue(FunctionName)) {
3297 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3301 // If this is a definition of a forward referenced function, make sure the
3303 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3304 = ForwardRefValIDs.find(NumberedVals.size());
3305 if (I != ForwardRefValIDs.end()) {
3306 Fn = cast<Function>(I->second.first);
3307 if (Fn->getType() != PFT)
3308 return Error(NameLoc, "type of definition and forward reference of '@" +
3309 Twine(NumberedVals.size()) + "' disagree");
3310 ForwardRefValIDs.erase(I);
3315 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3316 else // Move the forward-reference to the correct spot in the module.
3317 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3319 if (FunctionName.empty())
3320 NumberedVals.push_back(Fn);
3322 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3323 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3324 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3325 Fn->setCallingConv(CC);
3326 Fn->setAttributes(PAL);
3327 Fn->setUnnamedAddr(UnnamedAddr);
3328 Fn->setAlignment(Alignment);
3329 Fn->setSection(Section);
3331 if (!GC.empty()) Fn->setGC(GC.c_str());
3332 Fn->setPrefixData(Prefix);
3333 Fn->setPrologueData(Prologue);
3334 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3336 // Add all of the arguments we parsed to the function.
3337 Function::arg_iterator ArgIt = Fn->arg_begin();
3338 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3339 // If the argument has a name, insert it into the argument symbol table.
3340 if (ArgList[i].Name.empty()) continue;
3342 // Set the name, if it conflicted, it will be auto-renamed.
3343 ArgIt->setName(ArgList[i].Name);
3345 if (ArgIt->getName() != ArgList[i].Name)
3346 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3347 ArgList[i].Name + "'");
3353 // Check the declaration has no block address forward references.
3355 if (FunctionName.empty()) {
3356 ID.Kind = ValID::t_GlobalID;
3357 ID.UIntVal = NumberedVals.size() - 1;
3359 ID.Kind = ValID::t_GlobalName;
3360 ID.StrVal = FunctionName;
3362 auto Blocks = ForwardRefBlockAddresses.find(ID);
3363 if (Blocks != ForwardRefBlockAddresses.end())
3364 return Error(Blocks->first.Loc,
3365 "cannot take blockaddress inside a declaration");
3369 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3371 if (FunctionNumber == -1) {
3372 ID.Kind = ValID::t_GlobalName;
3373 ID.StrVal = F.getName();
3375 ID.Kind = ValID::t_GlobalID;
3376 ID.UIntVal = FunctionNumber;
3379 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3380 if (Blocks == P.ForwardRefBlockAddresses.end())
3383 for (const auto &I : Blocks->second) {
3384 const ValID &BBID = I.first;
3385 GlobalValue *GV = I.second;
3387 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3388 "Expected local id or name");
3390 if (BBID.Kind == ValID::t_LocalName)
3391 BB = GetBB(BBID.StrVal, BBID.Loc);
3393 BB = GetBB(BBID.UIntVal, BBID.Loc);
3395 return P.Error(BBID.Loc, "referenced value is not a basic block");
3397 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3398 GV->eraseFromParent();
3401 P.ForwardRefBlockAddresses.erase(Blocks);
3405 /// ParseFunctionBody
3406 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3407 bool LLParser::ParseFunctionBody(Function &Fn) {
3408 if (Lex.getKind() != lltok::lbrace)
3409 return TokError("expected '{' in function body");
3410 Lex.Lex(); // eat the {.
3412 int FunctionNumber = -1;
3413 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3415 PerFunctionState PFS(*this, Fn, FunctionNumber);
3417 // Resolve block addresses and allow basic blocks to be forward-declared
3418 // within this function.
3419 if (PFS.resolveForwardRefBlockAddresses())
3421 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3423 // We need at least one basic block.
3424 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3425 return TokError("function body requires at least one basic block");
3427 while (Lex.getKind() != lltok::rbrace &&
3428 Lex.getKind() != lltok::kw_uselistorder)
3429 if (ParseBasicBlock(PFS)) return true;
3431 while (Lex.getKind() != lltok::rbrace)
3432 if (ParseUseListOrder(&PFS))
3438 // Verify function is ok.
3439 return PFS.FinishFunction();
3443 /// ::= LabelStr? Instruction*
3444 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3445 // If this basic block starts out with a name, remember it.
3447 LocTy NameLoc = Lex.getLoc();
3448 if (Lex.getKind() == lltok::LabelStr) {
3449 Name = Lex.getStrVal();
3453 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3454 if (!BB) return true;
3456 std::string NameStr;
3458 // Parse the instructions in this block until we get a terminator.
3461 // This instruction may have three possibilities for a name: a) none
3462 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3463 LocTy NameLoc = Lex.getLoc();
3467 if (Lex.getKind() == lltok::LocalVarID) {
3468 NameID = Lex.getUIntVal();
3470 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3472 } else if (Lex.getKind() == lltok::LocalVar) {
3473 NameStr = Lex.getStrVal();
3475 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3479 switch (ParseInstruction(Inst, BB, PFS)) {
3480 default: llvm_unreachable("Unknown ParseInstruction result!");
3481 case InstError: return true;
3483 BB->getInstList().push_back(Inst);
3485 // With a normal result, we check to see if the instruction is followed by
3486 // a comma and metadata.
3487 if (EatIfPresent(lltok::comma))
3488 if (ParseInstructionMetadata(Inst, &PFS))
3491 case InstExtraComma:
3492 BB->getInstList().push_back(Inst);
3494 // If the instruction parser ate an extra comma at the end of it, it
3495 // *must* be followed by metadata.
3496 if (ParseInstructionMetadata(Inst, &PFS))
3501 // Set the name on the instruction.
3502 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3503 } while (!isa<TerminatorInst>(Inst));
3508 //===----------------------------------------------------------------------===//
3509 // Instruction Parsing.
3510 //===----------------------------------------------------------------------===//
3512 /// ParseInstruction - Parse one of the many different instructions.
3514 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3515 PerFunctionState &PFS) {
3516 lltok::Kind Token = Lex.getKind();
3517 if (Token == lltok::Eof)
3518 return TokError("found end of file when expecting more instructions");
3519 LocTy Loc = Lex.getLoc();
3520 unsigned KeywordVal = Lex.getUIntVal();
3521 Lex.Lex(); // Eat the keyword.
3524 default: return Error(Loc, "expected instruction opcode");
3525 // Terminator Instructions.
3526 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3527 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3528 case lltok::kw_br: return ParseBr(Inst, PFS);
3529 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3530 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3531 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3532 case lltok::kw_resume: return ParseResume(Inst, PFS);
3533 // Binary Operators.
3537 case lltok::kw_shl: {
3538 bool NUW = EatIfPresent(lltok::kw_nuw);
3539 bool NSW = EatIfPresent(lltok::kw_nsw);
3540 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3542 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3544 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3545 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3548 case lltok::kw_fadd:
3549 case lltok::kw_fsub:
3550 case lltok::kw_fmul:
3551 case lltok::kw_fdiv:
3552 case lltok::kw_frem: {
3553 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3554 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3558 Inst->setFastMathFlags(FMF);
3562 case lltok::kw_sdiv:
3563 case lltok::kw_udiv:
3564 case lltok::kw_lshr:
3565 case lltok::kw_ashr: {
3566 bool Exact = EatIfPresent(lltok::kw_exact);
3568 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3569 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3573 case lltok::kw_urem:
3574 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3577 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3578 case lltok::kw_icmp:
3579 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3581 case lltok::kw_trunc:
3582 case lltok::kw_zext:
3583 case lltok::kw_sext:
3584 case lltok::kw_fptrunc:
3585 case lltok::kw_fpext:
3586 case lltok::kw_bitcast:
3587 case lltok::kw_addrspacecast:
3588 case lltok::kw_uitofp:
3589 case lltok::kw_sitofp:
3590 case lltok::kw_fptoui:
3591 case lltok::kw_fptosi:
3592 case lltok::kw_inttoptr:
3593 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3595 case lltok::kw_select: return ParseSelect(Inst, PFS);
3596 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3597 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3598 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3599 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3600 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3601 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3603 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3604 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3605 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3607 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3608 case lltok::kw_load: return ParseLoad(Inst, PFS);
3609 case lltok::kw_store: return ParseStore(Inst, PFS);
3610 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3611 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3612 case lltok::kw_fence: return ParseFence(Inst, PFS);
3613 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3614 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3615 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3619 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3620 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3621 if (Opc == Instruction::FCmp) {
3622 switch (Lex.getKind()) {
3623 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3624 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3625 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3626 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3627 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3628 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3629 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3630 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3631 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3632 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3633 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3634 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3635 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3636 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3637 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3638 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3639 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3642 switch (Lex.getKind()) {
3643 default: return TokError("expected icmp predicate (e.g. 'eq')");
3644 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3645 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3646 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3647 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3648 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3649 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3650 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3651 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3652 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3653 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3660 //===----------------------------------------------------------------------===//
3661 // Terminator Instructions.
3662 //===----------------------------------------------------------------------===//
3664 /// ParseRet - Parse a return instruction.
3665 /// ::= 'ret' void (',' !dbg, !1)*
3666 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3667 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3668 PerFunctionState &PFS) {
3669 SMLoc TypeLoc = Lex.getLoc();
3671 if (ParseType(Ty, true /*void allowed*/)) return true;
3673 Type *ResType = PFS.getFunction().getReturnType();
3675 if (Ty->isVoidTy()) {
3676 if (!ResType->isVoidTy())
3677 return Error(TypeLoc, "value doesn't match function result type '" +
3678 getTypeString(ResType) + "'");
3680 Inst = ReturnInst::Create(Context);
3685 if (ParseValue(Ty, RV, PFS)) return true;
3687 if (ResType != RV->getType())
3688 return Error(TypeLoc, "value doesn't match function result type '" +
3689 getTypeString(ResType) + "'");
3691 Inst = ReturnInst::Create(Context, RV);
3697 /// ::= 'br' TypeAndValue
3698 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3699 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3702 BasicBlock *Op1, *Op2;
3703 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3705 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3706 Inst = BranchInst::Create(BB);
3710 if (Op0->getType() != Type::getInt1Ty(Context))
3711 return Error(Loc, "branch condition must have 'i1' type");
3713 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3714 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3715 ParseToken(lltok::comma, "expected ',' after true destination") ||
3716 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3719 Inst = BranchInst::Create(Op1, Op2, Op0);
3725 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3727 /// ::= (TypeAndValue ',' TypeAndValue)*
3728 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3729 LocTy CondLoc, BBLoc;
3731 BasicBlock *DefaultBB;
3732 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3733 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3734 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3735 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3738 if (!Cond->getType()->isIntegerTy())
3739 return Error(CondLoc, "switch condition must have integer type");
3741 // Parse the jump table pairs.
3742 SmallPtrSet<Value*, 32> SeenCases;
3743 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3744 while (Lex.getKind() != lltok::rsquare) {
3748 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3749 ParseToken(lltok::comma, "expected ',' after case value") ||
3750 ParseTypeAndBasicBlock(DestBB, PFS))
3753 if (!SeenCases.insert(Constant).second)
3754 return Error(CondLoc, "duplicate case value in switch");
3755 if (!isa<ConstantInt>(Constant))
3756 return Error(CondLoc, "case value is not a constant integer");
3758 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3761 Lex.Lex(); // Eat the ']'.
3763 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3764 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3765 SI->addCase(Table[i].first, Table[i].second);
3772 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3773 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3776 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3777 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3778 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3781 if (!Address->getType()->isPointerTy())
3782 return Error(AddrLoc, "indirectbr address must have pointer type");
3784 // Parse the destination list.
3785 SmallVector<BasicBlock*, 16> DestList;
3787 if (Lex.getKind() != lltok::rsquare) {
3789 if (ParseTypeAndBasicBlock(DestBB, PFS))
3791 DestList.push_back(DestBB);
3793 while (EatIfPresent(lltok::comma)) {
3794 if (ParseTypeAndBasicBlock(DestBB, PFS))
3796 DestList.push_back(DestBB);
3800 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3803 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3804 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3805 IBI->addDestination(DestList[i]);
3812 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3813 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3814 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3815 LocTy CallLoc = Lex.getLoc();
3816 AttrBuilder RetAttrs, FnAttrs;
3817 std::vector<unsigned> FwdRefAttrGrps;
3820 Type *RetType = nullptr;
3823 SmallVector<ParamInfo, 16> ArgList;
3825 BasicBlock *NormalBB, *UnwindBB;
3826 if (ParseOptionalCallingConv(CC) ||
3827 ParseOptionalReturnAttrs(RetAttrs) ||
3828 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3829 ParseValID(CalleeID) ||
3830 ParseParameterList(ArgList, PFS) ||
3831 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3833 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3834 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3835 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3836 ParseTypeAndBasicBlock(UnwindBB, PFS))
3839 // If RetType is a non-function pointer type, then this is the short syntax
3840 // for the call, which means that RetType is just the return type. Infer the
3841 // rest of the function argument types from the arguments that are present.
3842 PointerType *PFTy = nullptr;
3843 FunctionType *Ty = nullptr;
3844 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3845 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3846 // Pull out the types of all of the arguments...
3847 std::vector<Type*> ParamTypes;
3848 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3849 ParamTypes.push_back(ArgList[i].V->getType());
3851 if (!FunctionType::isValidReturnType(RetType))
3852 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3854 Ty = FunctionType::get(RetType, ParamTypes, false);
3855 PFTy = PointerType::getUnqual(Ty);
3858 // Look up the callee.
3860 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3862 // Set up the Attribute for the function.
3863 SmallVector<AttributeSet, 8> Attrs;
3864 if (RetAttrs.hasAttributes())
3865 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3866 AttributeSet::ReturnIndex,
3869 SmallVector<Value*, 8> Args;
3871 // Loop through FunctionType's arguments and ensure they are specified
3872 // correctly. Also, gather any parameter attributes.
3873 FunctionType::param_iterator I = Ty->param_begin();
3874 FunctionType::param_iterator E = Ty->param_end();
3875 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3876 Type *ExpectedTy = nullptr;
3879 } else if (!Ty->isVarArg()) {
3880 return Error(ArgList[i].Loc, "too many arguments specified");
3883 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3884 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3885 getTypeString(ExpectedTy) + "'");
3886 Args.push_back(ArgList[i].V);
3887 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3888 AttrBuilder B(ArgList[i].Attrs, i + 1);
3889 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3894 return Error(CallLoc, "not enough parameters specified for call");
3896 if (FnAttrs.hasAttributes())
3897 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3898 AttributeSet::FunctionIndex,
3901 // Finish off the Attribute and check them
3902 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3904 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3905 II->setCallingConv(CC);
3906 II->setAttributes(PAL);
3907 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3913 /// ::= 'resume' TypeAndValue
3914 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3915 Value *Exn; LocTy ExnLoc;
3916 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3919 ResumeInst *RI = ResumeInst::Create(Exn);
3924 //===----------------------------------------------------------------------===//
3925 // Binary Operators.
3926 //===----------------------------------------------------------------------===//
3929 /// ::= ArithmeticOps TypeAndValue ',' Value
3931 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3932 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3933 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3934 unsigned Opc, unsigned OperandType) {
3935 LocTy Loc; Value *LHS, *RHS;
3936 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3937 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3938 ParseValue(LHS->getType(), RHS, PFS))
3942 switch (OperandType) {
3943 default: llvm_unreachable("Unknown operand type!");
3944 case 0: // int or FP.
3945 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3946 LHS->getType()->isFPOrFPVectorTy();
3948 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3949 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3953 return Error(Loc, "invalid operand type for instruction");
3955 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3960 /// ::= ArithmeticOps TypeAndValue ',' Value {
3961 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3963 LocTy Loc; Value *LHS, *RHS;
3964 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3965 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3966 ParseValue(LHS->getType(), RHS, PFS))
3969 if (!LHS->getType()->isIntOrIntVectorTy())
3970 return Error(Loc,"instruction requires integer or integer vector operands");
3972 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3978 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3979 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3980 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3982 // Parse the integer/fp comparison predicate.
3986 if (ParseCmpPredicate(Pred, Opc) ||
3987 ParseTypeAndValue(LHS, Loc, PFS) ||
3988 ParseToken(lltok::comma, "expected ',' after compare value") ||
3989 ParseValue(LHS->getType(), RHS, PFS))
3992 if (Opc == Instruction::FCmp) {
3993 if (!LHS->getType()->isFPOrFPVectorTy())
3994 return Error(Loc, "fcmp requires floating point operands");
3995 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3997 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3998 if (!LHS->getType()->isIntOrIntVectorTy() &&
3999 !LHS->getType()->getScalarType()->isPointerTy())
4000 return Error(Loc, "icmp requires integer operands");
4001 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4006 //===----------------------------------------------------------------------===//
4007 // Other Instructions.
4008 //===----------------------------------------------------------------------===//
4012 /// ::= CastOpc TypeAndValue 'to' Type
4013 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4017 Type *DestTy = nullptr;
4018 if (ParseTypeAndValue(Op, Loc, PFS) ||
4019 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4023 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4024 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4025 return Error(Loc, "invalid cast opcode for cast from '" +
4026 getTypeString(Op->getType()) + "' to '" +
4027 getTypeString(DestTy) + "'");
4029 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4034 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4035 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4037 Value *Op0, *Op1, *Op2;
4038 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4039 ParseToken(lltok::comma, "expected ',' after select condition") ||
4040 ParseTypeAndValue(Op1, PFS) ||
4041 ParseToken(lltok::comma, "expected ',' after select value") ||
4042 ParseTypeAndValue(Op2, PFS))
4045 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4046 return Error(Loc, Reason);
4048 Inst = SelectInst::Create(Op0, Op1, Op2);
4053 /// ::= 'va_arg' TypeAndValue ',' Type
4054 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4056 Type *EltTy = nullptr;
4058 if (ParseTypeAndValue(Op, PFS) ||
4059 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4060 ParseType(EltTy, TypeLoc))
4063 if (!EltTy->isFirstClassType())
4064 return Error(TypeLoc, "va_arg requires operand with first class type");
4066 Inst = new VAArgInst(Op, EltTy);
4070 /// ParseExtractElement
4071 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4072 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4075 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4076 ParseToken(lltok::comma, "expected ',' after extract value") ||
4077 ParseTypeAndValue(Op1, PFS))
4080 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4081 return Error(Loc, "invalid extractelement operands");
4083 Inst = ExtractElementInst::Create(Op0, Op1);
4087 /// ParseInsertElement
4088 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4089 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4091 Value *Op0, *Op1, *Op2;
4092 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4093 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4094 ParseTypeAndValue(Op1, PFS) ||
4095 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4096 ParseTypeAndValue(Op2, PFS))
4099 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4100 return Error(Loc, "invalid insertelement operands");
4102 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4106 /// ParseShuffleVector
4107 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4108 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4110 Value *Op0, *Op1, *Op2;
4111 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4112 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4113 ParseTypeAndValue(Op1, PFS) ||
4114 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4115 ParseTypeAndValue(Op2, PFS))
4118 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4119 return Error(Loc, "invalid shufflevector operands");
4121 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4126 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4127 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4128 Type *Ty = nullptr; LocTy TypeLoc;
4131 if (ParseType(Ty, TypeLoc) ||
4132 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4133 ParseValue(Ty, Op0, PFS) ||
4134 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4135 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4136 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4139 bool AteExtraComma = false;
4140 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4142 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4144 if (!EatIfPresent(lltok::comma))
4147 if (Lex.getKind() == lltok::MetadataVar) {
4148 AteExtraComma = true;
4152 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4153 ParseValue(Ty, Op0, PFS) ||
4154 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4155 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4156 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4160 if (!Ty->isFirstClassType())
4161 return Error(TypeLoc, "phi node must have first class type");
4163 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4164 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4165 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4167 return AteExtraComma ? InstExtraComma : InstNormal;
4171 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4173 /// ::= 'catch' TypeAndValue
4175 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4176 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4177 Type *Ty = nullptr; LocTy TyLoc;
4178 Value *PersFn; LocTy PersFnLoc;
4180 if (ParseType(Ty, TyLoc) ||
4181 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4182 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4185 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4186 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4188 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4189 LandingPadInst::ClauseType CT;
4190 if (EatIfPresent(lltok::kw_catch))
4191 CT = LandingPadInst::Catch;
4192 else if (EatIfPresent(lltok::kw_filter))
4193 CT = LandingPadInst::Filter;
4195 return TokError("expected 'catch' or 'filter' clause type");
4199 if (ParseTypeAndValue(V, VLoc, PFS)) {
4204 // A 'catch' type expects a non-array constant. A filter clause expects an
4206 if (CT == LandingPadInst::Catch) {
4207 if (isa<ArrayType>(V->getType()))
4208 Error(VLoc, "'catch' clause has an invalid type");
4210 if (!isa<ArrayType>(V->getType()))
4211 Error(VLoc, "'filter' clause has an invalid type");
4214 LP->addClause(cast<Constant>(V));
4222 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4223 /// ParameterList OptionalAttrs
4224 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4225 /// ParameterList OptionalAttrs
4226 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4227 /// ParameterList OptionalAttrs
4228 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4229 CallInst::TailCallKind TCK) {
4230 AttrBuilder RetAttrs, FnAttrs;
4231 std::vector<unsigned> FwdRefAttrGrps;
4234 Type *RetType = nullptr;
4237 SmallVector<ParamInfo, 16> ArgList;
4238 LocTy CallLoc = Lex.getLoc();
4240 if ((TCK != CallInst::TCK_None &&
4241 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4242 ParseOptionalCallingConv(CC) ||
4243 ParseOptionalReturnAttrs(RetAttrs) ||
4244 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4245 ParseValID(CalleeID) ||
4246 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4247 PFS.getFunction().isVarArg()) ||
4248 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4252 // If RetType is a non-function pointer type, then this is the short syntax
4253 // for the call, which means that RetType is just the return type. Infer the
4254 // rest of the function argument types from the arguments that are present.
4255 PointerType *PFTy = nullptr;
4256 FunctionType *Ty = nullptr;
4257 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4258 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4259 // Pull out the types of all of the arguments...
4260 std::vector<Type*> ParamTypes;
4261 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4262 ParamTypes.push_back(ArgList[i].V->getType());
4264 if (!FunctionType::isValidReturnType(RetType))
4265 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4267 Ty = FunctionType::get(RetType, ParamTypes, false);
4268 PFTy = PointerType::getUnqual(Ty);
4271 // Look up the callee.
4273 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4275 // Set up the Attribute for the function.
4276 SmallVector<AttributeSet, 8> Attrs;
4277 if (RetAttrs.hasAttributes())
4278 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4279 AttributeSet::ReturnIndex,
4282 SmallVector<Value*, 8> Args;
4284 // Loop through FunctionType's arguments and ensure they are specified
4285 // correctly. Also, gather any parameter attributes.
4286 FunctionType::param_iterator I = Ty->param_begin();
4287 FunctionType::param_iterator E = Ty->param_end();
4288 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4289 Type *ExpectedTy = nullptr;
4292 } else if (!Ty->isVarArg()) {
4293 return Error(ArgList[i].Loc, "too many arguments specified");
4296 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4297 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4298 getTypeString(ExpectedTy) + "'");
4299 Args.push_back(ArgList[i].V);
4300 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4301 AttrBuilder B(ArgList[i].Attrs, i + 1);
4302 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4307 return Error(CallLoc, "not enough parameters specified for call");
4309 if (FnAttrs.hasAttributes())
4310 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4311 AttributeSet::FunctionIndex,
4314 // Finish off the Attribute and check them
4315 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4317 CallInst *CI = CallInst::Create(Callee, Args);
4318 CI->setTailCallKind(TCK);
4319 CI->setCallingConv(CC);
4320 CI->setAttributes(PAL);
4321 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4326 //===----------------------------------------------------------------------===//
4327 // Memory Instructions.
4328 //===----------------------------------------------------------------------===//
4331 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4332 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4333 Value *Size = nullptr;
4335 unsigned Alignment = 0;
4338 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4340 if (ParseType(Ty)) return true;
4342 bool AteExtraComma = false;
4343 if (EatIfPresent(lltok::comma)) {
4344 if (Lex.getKind() == lltok::kw_align) {
4345 if (ParseOptionalAlignment(Alignment)) return true;
4346 } else if (Lex.getKind() == lltok::MetadataVar) {
4347 AteExtraComma = true;
4349 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4350 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4355 if (Size && !Size->getType()->isIntegerTy())
4356 return Error(SizeLoc, "element count must have integer type");
4358 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4359 AI->setUsedWithInAlloca(IsInAlloca);
4361 return AteExtraComma ? InstExtraComma : InstNormal;
4365 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4366 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4367 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4368 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4369 Value *Val; LocTy Loc;
4370 unsigned Alignment = 0;
4371 bool AteExtraComma = false;
4372 bool isAtomic = false;
4373 AtomicOrdering Ordering = NotAtomic;
4374 SynchronizationScope Scope = CrossThread;
4376 if (Lex.getKind() == lltok::kw_atomic) {
4381 bool isVolatile = false;
4382 if (Lex.getKind() == lltok::kw_volatile) {
4387 if (ParseTypeAndValue(Val, Loc, PFS) ||
4388 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4389 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4392 if (!Val->getType()->isPointerTy() ||
4393 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4394 return Error(Loc, "load operand must be a pointer to a first class type");
4395 if (isAtomic && !Alignment)
4396 return Error(Loc, "atomic load must have explicit non-zero alignment");
4397 if (Ordering == Release || Ordering == AcquireRelease)
4398 return Error(Loc, "atomic load cannot use Release ordering");
4400 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4401 return AteExtraComma ? InstExtraComma : InstNormal;
4406 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4407 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4408 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4409 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4410 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4411 unsigned Alignment = 0;
4412 bool AteExtraComma = false;
4413 bool isAtomic = false;
4414 AtomicOrdering Ordering = NotAtomic;
4415 SynchronizationScope Scope = CrossThread;
4417 if (Lex.getKind() == lltok::kw_atomic) {
4422 bool isVolatile = false;
4423 if (Lex.getKind() == lltok::kw_volatile) {
4428 if (ParseTypeAndValue(Val, Loc, PFS) ||
4429 ParseToken(lltok::comma, "expected ',' after store operand") ||
4430 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4431 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4432 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4435 if (!Ptr->getType()->isPointerTy())
4436 return Error(PtrLoc, "store operand must be a pointer");
4437 if (!Val->getType()->isFirstClassType())
4438 return Error(Loc, "store operand must be a first class value");
4439 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4440 return Error(Loc, "stored value and pointer type do not match");
4441 if (isAtomic && !Alignment)
4442 return Error(Loc, "atomic store must have explicit non-zero alignment");
4443 if (Ordering == Acquire || Ordering == AcquireRelease)
4444 return Error(Loc, "atomic store cannot use Acquire ordering");
4446 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4447 return AteExtraComma ? InstExtraComma : InstNormal;
4451 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4452 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4453 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4454 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4455 bool AteExtraComma = false;
4456 AtomicOrdering SuccessOrdering = NotAtomic;
4457 AtomicOrdering FailureOrdering = NotAtomic;
4458 SynchronizationScope Scope = CrossThread;
4459 bool isVolatile = false;
4460 bool isWeak = false;
4462 if (EatIfPresent(lltok::kw_weak))
4465 if (EatIfPresent(lltok::kw_volatile))
4468 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4469 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4470 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4471 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4472 ParseTypeAndValue(New, NewLoc, PFS) ||
4473 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4474 ParseOrdering(FailureOrdering))
4477 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4478 return TokError("cmpxchg cannot be unordered");
4479 if (SuccessOrdering < FailureOrdering)
4480 return TokError("cmpxchg must be at least as ordered on success as failure");
4481 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4482 return TokError("cmpxchg failure ordering cannot include release semantics");
4483 if (!Ptr->getType()->isPointerTy())
4484 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4485 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4486 return Error(CmpLoc, "compare value and pointer type do not match");
4487 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4488 return Error(NewLoc, "new value and pointer type do not match");
4489 if (!New->getType()->isIntegerTy())
4490 return Error(NewLoc, "cmpxchg operand must be an integer");
4491 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4492 if (Size < 8 || (Size & (Size - 1)))
4493 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4496 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4497 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4498 CXI->setVolatile(isVolatile);
4499 CXI->setWeak(isWeak);
4501 return AteExtraComma ? InstExtraComma : InstNormal;
4505 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4506 /// 'singlethread'? AtomicOrdering
4507 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4508 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4509 bool AteExtraComma = false;
4510 AtomicOrdering Ordering = NotAtomic;
4511 SynchronizationScope Scope = CrossThread;
4512 bool isVolatile = false;
4513 AtomicRMWInst::BinOp Operation;
4515 if (EatIfPresent(lltok::kw_volatile))
4518 switch (Lex.getKind()) {
4519 default: return TokError("expected binary operation in atomicrmw");
4520 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4521 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4522 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4523 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4524 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4525 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4526 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4527 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4528 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4529 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4530 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4532 Lex.Lex(); // Eat the operation.
4534 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4535 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4536 ParseTypeAndValue(Val, ValLoc, PFS) ||
4537 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4540 if (Ordering == Unordered)
4541 return TokError("atomicrmw cannot be unordered");
4542 if (!Ptr->getType()->isPointerTy())
4543 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4544 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4545 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4546 if (!Val->getType()->isIntegerTy())
4547 return Error(ValLoc, "atomicrmw operand must be an integer");
4548 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4549 if (Size < 8 || (Size & (Size - 1)))
4550 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4553 AtomicRMWInst *RMWI =
4554 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4555 RMWI->setVolatile(isVolatile);
4557 return AteExtraComma ? InstExtraComma : InstNormal;
4561 /// ::= 'fence' 'singlethread'? AtomicOrdering
4562 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4563 AtomicOrdering Ordering = NotAtomic;
4564 SynchronizationScope Scope = CrossThread;
4565 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4568 if (Ordering == Unordered)
4569 return TokError("fence cannot be unordered");
4570 if (Ordering == Monotonic)
4571 return TokError("fence cannot be monotonic");
4573 Inst = new FenceInst(Context, Ordering, Scope);
4577 /// ParseGetElementPtr
4578 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4579 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4580 Value *Ptr = nullptr;
4581 Value *Val = nullptr;
4584 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4586 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4588 Type *BaseType = Ptr->getType();
4589 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4590 if (!BasePointerType)
4591 return Error(Loc, "base of getelementptr must be a pointer");
4593 SmallVector<Value*, 16> Indices;
4594 bool AteExtraComma = false;
4595 while (EatIfPresent(lltok::comma)) {
4596 if (Lex.getKind() == lltok::MetadataVar) {
4597 AteExtraComma = true;
4600 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4601 if (!Val->getType()->getScalarType()->isIntegerTy())
4602 return Error(EltLoc, "getelementptr index must be an integer");
4603 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4604 return Error(EltLoc, "getelementptr index type missmatch");
4605 if (Val->getType()->isVectorTy()) {
4606 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4607 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4608 if (ValNumEl != PtrNumEl)
4609 return Error(EltLoc,
4610 "getelementptr vector index has a wrong number of elements");
4612 Indices.push_back(Val);
4615 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4616 return Error(Loc, "base element of getelementptr must be sized");
4618 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4619 return Error(Loc, "invalid getelementptr indices");
4620 Inst = GetElementPtrInst::Create(Ptr, Indices);
4622 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4623 return AteExtraComma ? InstExtraComma : InstNormal;
4626 /// ParseExtractValue
4627 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4628 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4629 Value *Val; LocTy Loc;
4630 SmallVector<unsigned, 4> Indices;
4632 if (ParseTypeAndValue(Val, Loc, PFS) ||
4633 ParseIndexList(Indices, AteExtraComma))
4636 if (!Val->getType()->isAggregateType())
4637 return Error(Loc, "extractvalue operand must be aggregate type");
4639 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4640 return Error(Loc, "invalid indices for extractvalue");
4641 Inst = ExtractValueInst::Create(Val, Indices);
4642 return AteExtraComma ? InstExtraComma : InstNormal;
4645 /// ParseInsertValue
4646 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4647 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4648 Value *Val0, *Val1; LocTy Loc0, Loc1;
4649 SmallVector<unsigned, 4> Indices;
4651 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4652 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4653 ParseTypeAndValue(Val1, Loc1, PFS) ||
4654 ParseIndexList(Indices, AteExtraComma))
4657 if (!Val0->getType()->isAggregateType())
4658 return Error(Loc0, "insertvalue operand must be aggregate type");
4660 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4661 return Error(Loc0, "invalid indices for insertvalue");
4662 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4663 return AteExtraComma ? InstExtraComma : InstNormal;
4666 //===----------------------------------------------------------------------===//
4667 // Embedded metadata.
4668 //===----------------------------------------------------------------------===//
4670 /// ParseMDNodeVector
4671 /// ::= Element (',' Element)*
4673 /// ::= 'null' | TypeAndValue
4674 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4675 PerFunctionState *PFS) {
4676 // Check for an empty list.
4677 if (Lex.getKind() == lltok::rbrace)
4680 bool IsLocal = false;
4683 return TokError("unexpected operand after function-local metadata");
4685 // Null is a special case since it is typeless.
4686 if (EatIfPresent(lltok::kw_null)) {
4687 Elts.push_back(nullptr);
4692 if (ParseTypeAndValue(V, PFS)) return true;
4695 if (isa<MDNode>(V) && cast<MDNode>(V)->isFunctionLocal())
4696 return TokError("unexpected nested function-local metadata");
4697 if (!V->getType()->isMetadataTy() && !isa<Constant>(V)) {
4698 assert(PFS && "Unexpected function-local metadata without PFS");
4699 if (Elts.size() > 1)
4700 return TokError("unexpected function-local metadata");
4703 } while (EatIfPresent(lltok::comma));
4708 //===----------------------------------------------------------------------===//
4709 // Use-list order directives.
4710 //===----------------------------------------------------------------------===//
4711 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4714 return Error(Loc, "value has no uses");
4716 unsigned NumUses = 0;
4717 SmallDenseMap<const Use *, unsigned, 16> Order;
4718 for (const Use &U : V->uses()) {
4719 if (++NumUses > Indexes.size())
4721 Order[&U] = Indexes[NumUses - 1];
4724 return Error(Loc, "value only has one use");
4725 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4726 return Error(Loc, "wrong number of indexes, expected " +
4727 Twine(std::distance(V->use_begin(), V->use_end())));
4729 V->sortUseList([&](const Use &L, const Use &R) {
4730 return Order.lookup(&L) < Order.lookup(&R);
4735 /// ParseUseListOrderIndexes
4736 /// ::= '{' uint32 (',' uint32)+ '}'
4737 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4738 SMLoc Loc = Lex.getLoc();
4739 if (ParseToken(lltok::lbrace, "expected '{' here"))
4741 if (Lex.getKind() == lltok::rbrace)
4742 return Lex.Error("expected non-empty list of uselistorder indexes");
4744 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4745 // indexes should be distinct numbers in the range [0, size-1], and should
4747 unsigned Offset = 0;
4749 bool IsOrdered = true;
4750 assert(Indexes.empty() && "Expected empty order vector");
4753 if (ParseUInt32(Index))
4756 // Update consistency checks.
4757 Offset += Index - Indexes.size();
4758 Max = std::max(Max, Index);
4759 IsOrdered &= Index == Indexes.size();
4761 Indexes.push_back(Index);
4762 } while (EatIfPresent(lltok::comma));
4764 if (ParseToken(lltok::rbrace, "expected '}' here"))
4767 if (Indexes.size() < 2)
4768 return Error(Loc, "expected >= 2 uselistorder indexes");
4769 if (Offset != 0 || Max >= Indexes.size())
4770 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4772 return Error(Loc, "expected uselistorder indexes to change the order");
4777 /// ParseUseListOrder
4778 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4779 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4780 SMLoc Loc = Lex.getLoc();
4781 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4785 SmallVector<unsigned, 16> Indexes;
4786 if (ParseTypeAndValue(V, PFS) ||
4787 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4788 ParseUseListOrderIndexes(Indexes))
4791 return sortUseListOrder(V, Indexes, Loc);
4794 /// ParseUseListOrderBB
4795 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4796 bool LLParser::ParseUseListOrderBB() {
4797 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4798 SMLoc Loc = Lex.getLoc();
4802 SmallVector<unsigned, 16> Indexes;
4803 if (ParseValID(Fn) ||
4804 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4805 ParseValID(Label) ||
4806 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4807 ParseUseListOrderIndexes(Indexes))
4810 // Check the function.
4812 if (Fn.Kind == ValID::t_GlobalName)
4813 GV = M->getNamedValue(Fn.StrVal);
4814 else if (Fn.Kind == ValID::t_GlobalID)
4815 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4817 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4819 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4820 auto *F = dyn_cast<Function>(GV);
4822 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4823 if (F->isDeclaration())
4824 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4826 // Check the basic block.
4827 if (Label.Kind == ValID::t_LocalID)
4828 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4829 if (Label.Kind != ValID::t_LocalName)
4830 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4831 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4833 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4834 if (!isa<BasicBlock>(V))
4835 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4837 return sortUseListOrder(V, Indexes, Loc);