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 GlobalVariable *GV = nullptr;
792 // See if the global was forward referenced, if so, use the global.
794 if (GlobalValue *GVal = M->getNamedValue(Name)) {
795 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
796 return Error(NameLoc, "redefinition of global '@" + Name + "'");
797 GV = cast<GlobalVariable>(GVal);
800 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
801 I = ForwardRefValIDs.find(NumberedVals.size());
802 if (I != ForwardRefValIDs.end()) {
803 GV = cast<GlobalVariable>(I->second.first);
804 ForwardRefValIDs.erase(I);
809 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
810 Name, nullptr, GlobalVariable::NotThreadLocal,
813 if (GV->getType()->getElementType() != Ty)
815 "forward reference and definition of global have different types");
817 // Move the forward-reference to the correct spot in the module.
818 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
822 NumberedVals.push_back(GV);
824 // Set the parsed properties on the global.
826 GV->setInitializer(Init);
827 GV->setConstant(IsConstant);
828 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
829 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
830 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
831 GV->setExternallyInitialized(IsExternallyInitialized);
832 GV->setThreadLocalMode(TLM);
833 GV->setUnnamedAddr(UnnamedAddr);
835 // Parse attributes on the global.
836 while (Lex.getKind() == lltok::comma) {
839 if (Lex.getKind() == lltok::kw_section) {
841 GV->setSection(Lex.getStrVal());
842 if (ParseToken(lltok::StringConstant, "expected global section string"))
844 } else if (Lex.getKind() == lltok::kw_align) {
846 if (ParseOptionalAlignment(Alignment)) return true;
847 GV->setAlignment(Alignment);
850 if (parseOptionalComdat(C))
855 return TokError("unknown global variable property!");
862 /// ParseUnnamedAttrGrp
863 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
864 bool LLParser::ParseUnnamedAttrGrp() {
865 assert(Lex.getKind() == lltok::kw_attributes);
866 LocTy AttrGrpLoc = Lex.getLoc();
869 assert(Lex.getKind() == lltok::AttrGrpID);
870 unsigned VarID = Lex.getUIntVal();
871 std::vector<unsigned> unused;
875 if (ParseToken(lltok::equal, "expected '=' here") ||
876 ParseToken(lltok::lbrace, "expected '{' here") ||
877 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
879 ParseToken(lltok::rbrace, "expected end of attribute group"))
882 if (!NumberedAttrBuilders[VarID].hasAttributes())
883 return Error(AttrGrpLoc, "attribute group has no attributes");
888 /// ParseFnAttributeValuePairs
889 /// ::= <attr> | <attr> '=' <value>
890 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
891 std::vector<unsigned> &FwdRefAttrGrps,
892 bool inAttrGrp, LocTy &BuiltinLoc) {
893 bool HaveError = false;
898 lltok::Kind Token = Lex.getKind();
899 if (Token == lltok::kw_builtin)
900 BuiltinLoc = Lex.getLoc();
903 if (!inAttrGrp) return HaveError;
904 return Error(Lex.getLoc(), "unterminated attribute group");
909 case lltok::AttrGrpID: {
910 // Allow a function to reference an attribute group:
912 // define void @foo() #1 { ... }
916 "cannot have an attribute group reference in an attribute group");
918 unsigned AttrGrpNum = Lex.getUIntVal();
919 if (inAttrGrp) break;
921 // Save the reference to the attribute group. We'll fill it in later.
922 FwdRefAttrGrps.push_back(AttrGrpNum);
925 // Target-dependent attributes:
926 case lltok::StringConstant: {
927 std::string Attr = Lex.getStrVal();
930 if (EatIfPresent(lltok::equal) &&
931 ParseStringConstant(Val))
934 B.addAttribute(Attr, Val);
938 // Target-independent attributes:
939 case lltok::kw_align: {
940 // As a hack, we allow function alignment to be initially parsed as an
941 // attribute on a function declaration/definition or added to an attribute
942 // group and later moved to the alignment field.
946 if (ParseToken(lltok::equal, "expected '=' here") ||
947 ParseUInt32(Alignment))
950 if (ParseOptionalAlignment(Alignment))
953 B.addAlignmentAttr(Alignment);
956 case lltok::kw_alignstack: {
960 if (ParseToken(lltok::equal, "expected '=' here") ||
961 ParseUInt32(Alignment))
964 if (ParseOptionalStackAlignment(Alignment))
967 B.addStackAlignmentAttr(Alignment);
970 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
971 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
972 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
973 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
974 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
975 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
976 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
977 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
978 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
979 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
980 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
981 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
982 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
983 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
984 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
985 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
986 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
987 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
988 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
989 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
990 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
991 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
992 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
993 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
994 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
995 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
996 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
999 case lltok::kw_inreg:
1000 case lltok::kw_signext:
1001 case lltok::kw_zeroext:
1004 "invalid use of attribute on a function");
1006 case lltok::kw_byval:
1007 case lltok::kw_dereferenceable:
1008 case lltok::kw_inalloca:
1009 case lltok::kw_nest:
1010 case lltok::kw_noalias:
1011 case lltok::kw_nocapture:
1012 case lltok::kw_nonnull:
1013 case lltok::kw_returned:
1014 case lltok::kw_sret:
1017 "invalid use of parameter-only attribute on a function");
1025 //===----------------------------------------------------------------------===//
1026 // GlobalValue Reference/Resolution Routines.
1027 //===----------------------------------------------------------------------===//
1029 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1030 /// forward reference record if needed. This can return null if the value
1031 /// exists but does not have the right type.
1032 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1034 PointerType *PTy = dyn_cast<PointerType>(Ty);
1036 Error(Loc, "global variable reference must have pointer type");
1040 // Look this name up in the normal function symbol table.
1042 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1044 // If this is a forward reference for the value, see if we already created a
1045 // forward ref record.
1047 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1048 I = ForwardRefVals.find(Name);
1049 if (I != ForwardRefVals.end())
1050 Val = I->second.first;
1053 // If we have the value in the symbol table or fwd-ref table, return it.
1055 if (Val->getType() == Ty) return Val;
1056 Error(Loc, "'@" + Name + "' defined with type '" +
1057 getTypeString(Val->getType()) + "'");
1061 // Otherwise, create a new forward reference for this value and remember it.
1062 GlobalValue *FwdVal;
1063 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1064 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1066 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1067 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1068 nullptr, GlobalVariable::NotThreadLocal,
1069 PTy->getAddressSpace());
1071 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1075 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1076 PointerType *PTy = dyn_cast<PointerType>(Ty);
1078 Error(Loc, "global variable reference must have pointer type");
1082 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1084 // If this is a forward reference for the value, see if we already created a
1085 // forward ref record.
1087 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1088 I = ForwardRefValIDs.find(ID);
1089 if (I != ForwardRefValIDs.end())
1090 Val = I->second.first;
1093 // If we have the value in the symbol table or fwd-ref table, return it.
1095 if (Val->getType() == Ty) return Val;
1096 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1097 getTypeString(Val->getType()) + "'");
1101 // Otherwise, create a new forward reference for this value and remember it.
1102 GlobalValue *FwdVal;
1103 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1104 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1106 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1107 GlobalValue::ExternalWeakLinkage, nullptr, "");
1109 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1114 //===----------------------------------------------------------------------===//
1115 // Comdat Reference/Resolution Routines.
1116 //===----------------------------------------------------------------------===//
1118 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1119 // Look this name up in the comdat symbol table.
1120 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1121 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1122 if (I != ComdatSymTab.end())
1125 // Otherwise, create a new forward reference for this value and remember it.
1126 Comdat *C = M->getOrInsertComdat(Name);
1127 ForwardRefComdats[Name] = Loc;
1132 //===----------------------------------------------------------------------===//
1134 //===----------------------------------------------------------------------===//
1136 /// ParseToken - If the current token has the specified kind, eat it and return
1137 /// success. Otherwise, emit the specified error and return failure.
1138 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1139 if (Lex.getKind() != T)
1140 return TokError(ErrMsg);
1145 /// ParseStringConstant
1146 /// ::= StringConstant
1147 bool LLParser::ParseStringConstant(std::string &Result) {
1148 if (Lex.getKind() != lltok::StringConstant)
1149 return TokError("expected string constant");
1150 Result = Lex.getStrVal();
1157 bool LLParser::ParseUInt32(unsigned &Val) {
1158 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1159 return TokError("expected integer");
1160 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1161 if (Val64 != unsigned(Val64))
1162 return TokError("expected 32-bit integer (too large)");
1170 bool LLParser::ParseUInt64(uint64_t &Val) {
1171 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1172 return TokError("expected integer");
1173 Val = Lex.getAPSIntVal().getLimitedValue();
1179 /// := 'localdynamic'
1180 /// := 'initialexec'
1182 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1183 switch (Lex.getKind()) {
1185 return TokError("expected localdynamic, initialexec or localexec");
1186 case lltok::kw_localdynamic:
1187 TLM = GlobalVariable::LocalDynamicTLSModel;
1189 case lltok::kw_initialexec:
1190 TLM = GlobalVariable::InitialExecTLSModel;
1192 case lltok::kw_localexec:
1193 TLM = GlobalVariable::LocalExecTLSModel;
1201 /// ParseOptionalThreadLocal
1203 /// := 'thread_local'
1204 /// := 'thread_local' '(' tlsmodel ')'
1205 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1206 TLM = GlobalVariable::NotThreadLocal;
1207 if (!EatIfPresent(lltok::kw_thread_local))
1210 TLM = GlobalVariable::GeneralDynamicTLSModel;
1211 if (Lex.getKind() == lltok::lparen) {
1213 return ParseTLSModel(TLM) ||
1214 ParseToken(lltok::rparen, "expected ')' after thread local model");
1219 /// ParseOptionalAddrSpace
1221 /// := 'addrspace' '(' uint32 ')'
1222 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1224 if (!EatIfPresent(lltok::kw_addrspace))
1226 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1227 ParseUInt32(AddrSpace) ||
1228 ParseToken(lltok::rparen, "expected ')' in address space");
1231 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1232 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1233 bool HaveError = false;
1238 lltok::Kind Token = Lex.getKind();
1240 default: // End of attributes.
1242 case lltok::kw_align: {
1244 if (ParseOptionalAlignment(Alignment))
1246 B.addAlignmentAttr(Alignment);
1249 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1250 case lltok::kw_dereferenceable: {
1252 if (ParseOptionalDereferenceableBytes(Bytes))
1254 B.addDereferenceableAttr(Bytes);
1257 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1258 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1259 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1260 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1261 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1262 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1263 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1264 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1265 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1266 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1267 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1268 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1270 case lltok::kw_alignstack:
1271 case lltok::kw_alwaysinline:
1272 case lltok::kw_builtin:
1273 case lltok::kw_inlinehint:
1274 case lltok::kw_jumptable:
1275 case lltok::kw_minsize:
1276 case lltok::kw_naked:
1277 case lltok::kw_nobuiltin:
1278 case lltok::kw_noduplicate:
1279 case lltok::kw_noimplicitfloat:
1280 case lltok::kw_noinline:
1281 case lltok::kw_nonlazybind:
1282 case lltok::kw_noredzone:
1283 case lltok::kw_noreturn:
1284 case lltok::kw_nounwind:
1285 case lltok::kw_optnone:
1286 case lltok::kw_optsize:
1287 case lltok::kw_returns_twice:
1288 case lltok::kw_sanitize_address:
1289 case lltok::kw_sanitize_memory:
1290 case lltok::kw_sanitize_thread:
1292 case lltok::kw_sspreq:
1293 case lltok::kw_sspstrong:
1294 case lltok::kw_uwtable:
1295 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1303 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1304 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1305 bool HaveError = false;
1310 lltok::Kind Token = Lex.getKind();
1312 default: // End of attributes.
1314 case lltok::kw_dereferenceable: {
1316 if (ParseOptionalDereferenceableBytes(Bytes))
1318 B.addDereferenceableAttr(Bytes);
1321 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1322 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1323 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1324 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1325 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1328 case lltok::kw_align:
1329 case lltok::kw_byval:
1330 case lltok::kw_inalloca:
1331 case lltok::kw_nest:
1332 case lltok::kw_nocapture:
1333 case lltok::kw_returned:
1334 case lltok::kw_sret:
1335 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1338 case lltok::kw_alignstack:
1339 case lltok::kw_alwaysinline:
1340 case lltok::kw_builtin:
1341 case lltok::kw_cold:
1342 case lltok::kw_inlinehint:
1343 case lltok::kw_jumptable:
1344 case lltok::kw_minsize:
1345 case lltok::kw_naked:
1346 case lltok::kw_nobuiltin:
1347 case lltok::kw_noduplicate:
1348 case lltok::kw_noimplicitfloat:
1349 case lltok::kw_noinline:
1350 case lltok::kw_nonlazybind:
1351 case lltok::kw_noredzone:
1352 case lltok::kw_noreturn:
1353 case lltok::kw_nounwind:
1354 case lltok::kw_optnone:
1355 case lltok::kw_optsize:
1356 case lltok::kw_returns_twice:
1357 case lltok::kw_sanitize_address:
1358 case lltok::kw_sanitize_memory:
1359 case lltok::kw_sanitize_thread:
1361 case lltok::kw_sspreq:
1362 case lltok::kw_sspstrong:
1363 case lltok::kw_uwtable:
1364 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1367 case lltok::kw_readnone:
1368 case lltok::kw_readonly:
1369 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1376 /// ParseOptionalLinkage
1383 /// ::= 'linkonce_odr'
1384 /// ::= 'available_externally'
1387 /// ::= 'extern_weak'
1389 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1391 switch (Lex.getKind()) {
1392 default: Res=GlobalValue::ExternalLinkage; return false;
1393 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1394 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1395 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1396 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1397 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1398 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1399 case lltok::kw_available_externally:
1400 Res = GlobalValue::AvailableExternallyLinkage;
1402 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1403 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1404 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1405 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1412 /// ParseOptionalVisibility
1418 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1419 switch (Lex.getKind()) {
1420 default: Res = GlobalValue::DefaultVisibility; return false;
1421 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1422 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1423 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1429 /// ParseOptionalDLLStorageClass
1434 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1435 switch (Lex.getKind()) {
1436 default: Res = GlobalValue::DefaultStorageClass; return false;
1437 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1438 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1444 /// ParseOptionalCallingConv
1448 /// ::= 'intel_ocl_bicc'
1450 /// ::= 'x86_stdcallcc'
1451 /// ::= 'x86_fastcallcc'
1452 /// ::= 'x86_thiscallcc'
1453 /// ::= 'x86_vectorcallcc'
1454 /// ::= 'arm_apcscc'
1455 /// ::= 'arm_aapcscc'
1456 /// ::= 'arm_aapcs_vfpcc'
1457 /// ::= 'msp430_intrcc'
1458 /// ::= 'ptx_kernel'
1459 /// ::= 'ptx_device'
1461 /// ::= 'spir_kernel'
1462 /// ::= 'x86_64_sysvcc'
1463 /// ::= 'x86_64_win64cc'
1464 /// ::= 'webkit_jscc'
1466 /// ::= 'preserve_mostcc'
1467 /// ::= 'preserve_allcc'
1471 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1472 switch (Lex.getKind()) {
1473 default: CC = CallingConv::C; return false;
1474 case lltok::kw_ccc: CC = CallingConv::C; break;
1475 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1476 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1477 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1478 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1479 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1480 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1481 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1482 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1483 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1484 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1485 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1486 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1487 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1488 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1489 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1490 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1491 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1492 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1493 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1494 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1495 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1496 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1497 case lltok::kw_cc: {
1499 return ParseUInt32(CC);
1507 /// ParseInstructionMetadata
1508 /// ::= !dbg !42 (',' !dbg !57)*
1509 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1510 PerFunctionState *PFS) {
1512 if (Lex.getKind() != lltok::MetadataVar)
1513 return TokError("expected metadata after comma");
1515 std::string Name = Lex.getStrVal();
1516 unsigned MDK = M->getMDKindID(Name);
1520 SMLoc Loc = Lex.getLoc();
1522 if (ParseToken(lltok::exclaim, "expected '!' here"))
1525 // This code is similar to that of ParseMetadataValue, however it needs to
1526 // have special-case code for a forward reference; see the comments on
1527 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1528 // at the top level here.
1529 if (Lex.getKind() == lltok::lbrace) {
1531 if (ParseMetadataListValue(ID, PFS))
1533 assert(ID.Kind == ValID::t_MDNode);
1534 if (ID.MDNodeVal->isFunctionLocal())
1535 return TokError("unexpected function-local metadata");
1536 Inst->setMetadata(MDK, ID.MDNodeVal);
1538 unsigned NodeID = 0;
1539 if (ParseMDNodeID(Node, NodeID))
1542 // If we got the node, add it to the instruction.
1543 Inst->setMetadata(MDK, Node);
1545 MDRef R = { Loc, MDK, NodeID };
1546 // Otherwise, remember that this should be resolved later.
1547 ForwardRefInstMetadata[Inst].push_back(R);
1551 if (MDK == LLVMContext::MD_tbaa)
1552 InstsWithTBAATag.push_back(Inst);
1554 // If this is the end of the list, we're done.
1555 } while (EatIfPresent(lltok::comma));
1559 /// ParseOptionalAlignment
1562 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1564 if (!EatIfPresent(lltok::kw_align))
1566 LocTy AlignLoc = Lex.getLoc();
1567 if (ParseUInt32(Alignment)) return true;
1568 if (!isPowerOf2_32(Alignment))
1569 return Error(AlignLoc, "alignment is not a power of two");
1570 if (Alignment > Value::MaximumAlignment)
1571 return Error(AlignLoc, "huge alignments are not supported yet");
1575 /// ParseOptionalDereferenceableBytes
1577 /// ::= 'dereferenceable' '(' 4 ')'
1578 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1580 if (!EatIfPresent(lltok::kw_dereferenceable))
1582 LocTy ParenLoc = Lex.getLoc();
1583 if (!EatIfPresent(lltok::lparen))
1584 return Error(ParenLoc, "expected '('");
1585 LocTy DerefLoc = Lex.getLoc();
1586 if (ParseUInt64(Bytes)) return true;
1587 ParenLoc = Lex.getLoc();
1588 if (!EatIfPresent(lltok::rparen))
1589 return Error(ParenLoc, "expected ')'");
1591 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1595 /// ParseOptionalCommaAlign
1599 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1601 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1602 bool &AteExtraComma) {
1603 AteExtraComma = false;
1604 while (EatIfPresent(lltok::comma)) {
1605 // Metadata at the end is an early exit.
1606 if (Lex.getKind() == lltok::MetadataVar) {
1607 AteExtraComma = true;
1611 if (Lex.getKind() != lltok::kw_align)
1612 return Error(Lex.getLoc(), "expected metadata or 'align'");
1614 if (ParseOptionalAlignment(Alignment)) return true;
1620 /// ParseScopeAndOrdering
1621 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1624 /// This sets Scope and Ordering to the parsed values.
1625 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1626 AtomicOrdering &Ordering) {
1630 Scope = CrossThread;
1631 if (EatIfPresent(lltok::kw_singlethread))
1632 Scope = SingleThread;
1634 return ParseOrdering(Ordering);
1638 /// ::= AtomicOrdering
1640 /// This sets Ordering to the parsed value.
1641 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1642 switch (Lex.getKind()) {
1643 default: return TokError("Expected ordering on atomic instruction");
1644 case lltok::kw_unordered: Ordering = Unordered; break;
1645 case lltok::kw_monotonic: Ordering = Monotonic; break;
1646 case lltok::kw_acquire: Ordering = Acquire; break;
1647 case lltok::kw_release: Ordering = Release; break;
1648 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1649 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1655 /// ParseOptionalStackAlignment
1657 /// ::= 'alignstack' '(' 4 ')'
1658 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1660 if (!EatIfPresent(lltok::kw_alignstack))
1662 LocTy ParenLoc = Lex.getLoc();
1663 if (!EatIfPresent(lltok::lparen))
1664 return Error(ParenLoc, "expected '('");
1665 LocTy AlignLoc = Lex.getLoc();
1666 if (ParseUInt32(Alignment)) return true;
1667 ParenLoc = Lex.getLoc();
1668 if (!EatIfPresent(lltok::rparen))
1669 return Error(ParenLoc, "expected ')'");
1670 if (!isPowerOf2_32(Alignment))
1671 return Error(AlignLoc, "stack alignment is not a power of two");
1675 /// ParseIndexList - This parses the index list for an insert/extractvalue
1676 /// instruction. This sets AteExtraComma in the case where we eat an extra
1677 /// comma at the end of the line and find that it is followed by metadata.
1678 /// Clients that don't allow metadata can call the version of this function that
1679 /// only takes one argument.
1682 /// ::= (',' uint32)+
1684 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1685 bool &AteExtraComma) {
1686 AteExtraComma = false;
1688 if (Lex.getKind() != lltok::comma)
1689 return TokError("expected ',' as start of index list");
1691 while (EatIfPresent(lltok::comma)) {
1692 if (Lex.getKind() == lltok::MetadataVar) {
1693 AteExtraComma = true;
1697 if (ParseUInt32(Idx)) return true;
1698 Indices.push_back(Idx);
1704 //===----------------------------------------------------------------------===//
1706 //===----------------------------------------------------------------------===//
1708 /// ParseType - Parse a type.
1709 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1710 SMLoc TypeLoc = Lex.getLoc();
1711 switch (Lex.getKind()) {
1713 return TokError("expected type");
1715 // Type ::= 'float' | 'void' (etc)
1716 Result = Lex.getTyVal();
1720 // Type ::= StructType
1721 if (ParseAnonStructType(Result, false))
1724 case lltok::lsquare:
1725 // Type ::= '[' ... ']'
1726 Lex.Lex(); // eat the lsquare.
1727 if (ParseArrayVectorType(Result, false))
1730 case lltok::less: // Either vector or packed struct.
1731 // Type ::= '<' ... '>'
1733 if (Lex.getKind() == lltok::lbrace) {
1734 if (ParseAnonStructType(Result, true) ||
1735 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1737 } else if (ParseArrayVectorType(Result, true))
1740 case lltok::LocalVar: {
1742 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1744 // If the type hasn't been defined yet, create a forward definition and
1745 // remember where that forward def'n was seen (in case it never is defined).
1747 Entry.first = StructType::create(Context, Lex.getStrVal());
1748 Entry.second = Lex.getLoc();
1750 Result = Entry.first;
1755 case lltok::LocalVarID: {
1757 if (Lex.getUIntVal() >= NumberedTypes.size())
1758 NumberedTypes.resize(Lex.getUIntVal()+1);
1759 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1761 // If the type hasn't been defined yet, create a forward definition and
1762 // remember where that forward def'n was seen (in case it never is defined).
1764 Entry.first = StructType::create(Context);
1765 Entry.second = Lex.getLoc();
1767 Result = Entry.first;
1773 // Parse the type suffixes.
1775 switch (Lex.getKind()) {
1778 if (!AllowVoid && Result->isVoidTy())
1779 return Error(TypeLoc, "void type only allowed for function results");
1782 // Type ::= Type '*'
1784 if (Result->isLabelTy())
1785 return TokError("basic block pointers are invalid");
1786 if (Result->isVoidTy())
1787 return TokError("pointers to void are invalid - use i8* instead");
1788 if (!PointerType::isValidElementType(Result))
1789 return TokError("pointer to this type is invalid");
1790 Result = PointerType::getUnqual(Result);
1794 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1795 case lltok::kw_addrspace: {
1796 if (Result->isLabelTy())
1797 return TokError("basic block pointers are invalid");
1798 if (Result->isVoidTy())
1799 return TokError("pointers to void are invalid; use i8* instead");
1800 if (!PointerType::isValidElementType(Result))
1801 return TokError("pointer to this type is invalid");
1803 if (ParseOptionalAddrSpace(AddrSpace) ||
1804 ParseToken(lltok::star, "expected '*' in address space"))
1807 Result = PointerType::get(Result, AddrSpace);
1811 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1813 if (ParseFunctionType(Result))
1820 /// ParseParameterList
1822 /// ::= '(' Arg (',' Arg)* ')'
1824 /// ::= Type OptionalAttributes Value OptionalAttributes
1825 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1826 PerFunctionState &PFS, bool IsMustTailCall,
1827 bool InVarArgsFunc) {
1828 if (ParseToken(lltok::lparen, "expected '(' in call"))
1831 unsigned AttrIndex = 1;
1832 while (Lex.getKind() != lltok::rparen) {
1833 // If this isn't the first argument, we need a comma.
1834 if (!ArgList.empty() &&
1835 ParseToken(lltok::comma, "expected ',' in argument list"))
1838 // Parse an ellipsis if this is a musttail call in a variadic function.
1839 if (Lex.getKind() == lltok::dotdotdot) {
1840 const char *Msg = "unexpected ellipsis in argument list for ";
1841 if (!IsMustTailCall)
1842 return TokError(Twine(Msg) + "non-musttail call");
1844 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1845 Lex.Lex(); // Lex the '...', it is purely for readability.
1846 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1849 // Parse the argument.
1851 Type *ArgTy = nullptr;
1852 AttrBuilder ArgAttrs;
1854 if (ParseType(ArgTy, ArgLoc))
1857 // Otherwise, handle normal operands.
1858 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1860 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1865 if (IsMustTailCall && InVarArgsFunc)
1866 return TokError("expected '...' at end of argument list for musttail call "
1867 "in varargs function");
1869 Lex.Lex(); // Lex the ')'.
1875 /// ParseArgumentList - Parse the argument list for a function type or function
1877 /// ::= '(' ArgTypeListI ')'
1881 /// ::= ArgTypeList ',' '...'
1882 /// ::= ArgType (',' ArgType)*
1884 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1887 assert(Lex.getKind() == lltok::lparen);
1888 Lex.Lex(); // eat the (.
1890 if (Lex.getKind() == lltok::rparen) {
1892 } else if (Lex.getKind() == lltok::dotdotdot) {
1896 LocTy TypeLoc = Lex.getLoc();
1897 Type *ArgTy = nullptr;
1901 if (ParseType(ArgTy) ||
1902 ParseOptionalParamAttrs(Attrs)) return true;
1904 if (ArgTy->isVoidTy())
1905 return Error(TypeLoc, "argument can not have void type");
1907 if (Lex.getKind() == lltok::LocalVar) {
1908 Name = Lex.getStrVal();
1912 if (!FunctionType::isValidArgumentType(ArgTy))
1913 return Error(TypeLoc, "invalid type for function argument");
1915 unsigned AttrIndex = 1;
1916 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1917 AttributeSet::get(ArgTy->getContext(),
1918 AttrIndex++, Attrs), Name));
1920 while (EatIfPresent(lltok::comma)) {
1921 // Handle ... at end of arg list.
1922 if (EatIfPresent(lltok::dotdotdot)) {
1927 // Otherwise must be an argument type.
1928 TypeLoc = Lex.getLoc();
1929 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1931 if (ArgTy->isVoidTy())
1932 return Error(TypeLoc, "argument can not have void type");
1934 if (Lex.getKind() == lltok::LocalVar) {
1935 Name = Lex.getStrVal();
1941 if (!ArgTy->isFirstClassType())
1942 return Error(TypeLoc, "invalid type for function argument");
1944 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1945 AttributeSet::get(ArgTy->getContext(),
1946 AttrIndex++, Attrs),
1951 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1954 /// ParseFunctionType
1955 /// ::= Type ArgumentList OptionalAttrs
1956 bool LLParser::ParseFunctionType(Type *&Result) {
1957 assert(Lex.getKind() == lltok::lparen);
1959 if (!FunctionType::isValidReturnType(Result))
1960 return TokError("invalid function return type");
1962 SmallVector<ArgInfo, 8> ArgList;
1964 if (ParseArgumentList(ArgList, isVarArg))
1967 // Reject names on the arguments lists.
1968 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1969 if (!ArgList[i].Name.empty())
1970 return Error(ArgList[i].Loc, "argument name invalid in function type");
1971 if (ArgList[i].Attrs.hasAttributes(i + 1))
1972 return Error(ArgList[i].Loc,
1973 "argument attributes invalid in function type");
1976 SmallVector<Type*, 16> ArgListTy;
1977 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1978 ArgListTy.push_back(ArgList[i].Ty);
1980 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1984 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1986 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1987 SmallVector<Type*, 8> Elts;
1988 if (ParseStructBody(Elts)) return true;
1990 Result = StructType::get(Context, Elts, Packed);
1994 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1995 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1996 std::pair<Type*, LocTy> &Entry,
1998 // If the type was already defined, diagnose the redefinition.
1999 if (Entry.first && !Entry.second.isValid())
2000 return Error(TypeLoc, "redefinition of type");
2002 // If we have opaque, just return without filling in the definition for the
2003 // struct. This counts as a definition as far as the .ll file goes.
2004 if (EatIfPresent(lltok::kw_opaque)) {
2005 // This type is being defined, so clear the location to indicate this.
2006 Entry.second = SMLoc();
2008 // If this type number has never been uttered, create it.
2010 Entry.first = StructType::create(Context, Name);
2011 ResultTy = Entry.first;
2015 // If the type starts with '<', then it is either a packed struct or a vector.
2016 bool isPacked = EatIfPresent(lltok::less);
2018 // If we don't have a struct, then we have a random type alias, which we
2019 // accept for compatibility with old files. These types are not allowed to be
2020 // forward referenced and not allowed to be recursive.
2021 if (Lex.getKind() != lltok::lbrace) {
2023 return Error(TypeLoc, "forward references to non-struct type");
2027 return ParseArrayVectorType(ResultTy, true);
2028 return ParseType(ResultTy);
2031 // This type is being defined, so clear the location to indicate this.
2032 Entry.second = SMLoc();
2034 // If this type number has never been uttered, create it.
2036 Entry.first = StructType::create(Context, Name);
2038 StructType *STy = cast<StructType>(Entry.first);
2040 SmallVector<Type*, 8> Body;
2041 if (ParseStructBody(Body) ||
2042 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2045 STy->setBody(Body, isPacked);
2051 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2054 /// ::= '{' Type (',' Type)* '}'
2055 /// ::= '<' '{' '}' '>'
2056 /// ::= '<' '{' Type (',' Type)* '}' '>'
2057 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2058 assert(Lex.getKind() == lltok::lbrace);
2059 Lex.Lex(); // Consume the '{'
2061 // Handle the empty struct.
2062 if (EatIfPresent(lltok::rbrace))
2065 LocTy EltTyLoc = Lex.getLoc();
2067 if (ParseType(Ty)) return true;
2070 if (!StructType::isValidElementType(Ty))
2071 return Error(EltTyLoc, "invalid element type for struct");
2073 while (EatIfPresent(lltok::comma)) {
2074 EltTyLoc = Lex.getLoc();
2075 if (ParseType(Ty)) return true;
2077 if (!StructType::isValidElementType(Ty))
2078 return Error(EltTyLoc, "invalid element type for struct");
2083 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2086 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2087 /// token has already been consumed.
2089 /// ::= '[' APSINTVAL 'x' Types ']'
2090 /// ::= '<' APSINTVAL 'x' Types '>'
2091 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2092 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2093 Lex.getAPSIntVal().getBitWidth() > 64)
2094 return TokError("expected number in address space");
2096 LocTy SizeLoc = Lex.getLoc();
2097 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2100 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2103 LocTy TypeLoc = Lex.getLoc();
2104 Type *EltTy = nullptr;
2105 if (ParseType(EltTy)) return true;
2107 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2108 "expected end of sequential type"))
2113 return Error(SizeLoc, "zero element vector is illegal");
2114 if ((unsigned)Size != Size)
2115 return Error(SizeLoc, "size too large for vector");
2116 if (!VectorType::isValidElementType(EltTy))
2117 return Error(TypeLoc, "invalid vector element type");
2118 Result = VectorType::get(EltTy, unsigned(Size));
2120 if (!ArrayType::isValidElementType(EltTy))
2121 return Error(TypeLoc, "invalid array element type");
2122 Result = ArrayType::get(EltTy, Size);
2127 //===----------------------------------------------------------------------===//
2128 // Function Semantic Analysis.
2129 //===----------------------------------------------------------------------===//
2131 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2133 : P(p), F(f), FunctionNumber(functionNumber) {
2135 // Insert unnamed arguments into the NumberedVals list.
2136 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2139 NumberedVals.push_back(AI);
2142 LLParser::PerFunctionState::~PerFunctionState() {
2143 // If there were any forward referenced non-basicblock values, delete them.
2144 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2145 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2146 if (!isa<BasicBlock>(I->second.first)) {
2147 I->second.first->replaceAllUsesWith(
2148 UndefValue::get(I->second.first->getType()));
2149 delete I->second.first;
2150 I->second.first = nullptr;
2153 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2154 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2155 if (!isa<BasicBlock>(I->second.first)) {
2156 I->second.first->replaceAllUsesWith(
2157 UndefValue::get(I->second.first->getType()));
2158 delete I->second.first;
2159 I->second.first = nullptr;
2163 bool LLParser::PerFunctionState::FinishFunction() {
2164 if (!ForwardRefVals.empty())
2165 return P.Error(ForwardRefVals.begin()->second.second,
2166 "use of undefined value '%" + ForwardRefVals.begin()->first +
2168 if (!ForwardRefValIDs.empty())
2169 return P.Error(ForwardRefValIDs.begin()->second.second,
2170 "use of undefined value '%" +
2171 Twine(ForwardRefValIDs.begin()->first) + "'");
2176 /// GetVal - Get a value with the specified name or ID, creating a
2177 /// forward reference record if needed. This can return null if the value
2178 /// exists but does not have the right type.
2179 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2180 Type *Ty, LocTy Loc) {
2181 // Look this name up in the normal function symbol table.
2182 Value *Val = F.getValueSymbolTable().lookup(Name);
2184 // If this is a forward reference for the value, see if we already created a
2185 // forward ref record.
2187 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2188 I = ForwardRefVals.find(Name);
2189 if (I != ForwardRefVals.end())
2190 Val = I->second.first;
2193 // If we have the value in the symbol table or fwd-ref table, return it.
2195 if (Val->getType() == Ty) return Val;
2196 if (Ty->isLabelTy())
2197 P.Error(Loc, "'%" + Name + "' is not a basic block");
2199 P.Error(Loc, "'%" + Name + "' defined with type '" +
2200 getTypeString(Val->getType()) + "'");
2204 // Don't make placeholders with invalid type.
2205 if (!Ty->isFirstClassType()) {
2206 P.Error(Loc, "invalid use of a non-first-class type");
2210 // Otherwise, create a new forward reference for this value and remember it.
2212 if (Ty->isLabelTy())
2213 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2215 FwdVal = new Argument(Ty, Name);
2217 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2221 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2223 // Look this name up in the normal function symbol table.
2224 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2226 // If this is a forward reference for the value, see if we already created a
2227 // forward ref record.
2229 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2230 I = ForwardRefValIDs.find(ID);
2231 if (I != ForwardRefValIDs.end())
2232 Val = I->second.first;
2235 // If we have the value in the symbol table or fwd-ref table, return it.
2237 if (Val->getType() == Ty) return Val;
2238 if (Ty->isLabelTy())
2239 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2241 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2242 getTypeString(Val->getType()) + "'");
2246 if (!Ty->isFirstClassType()) {
2247 P.Error(Loc, "invalid use of a non-first-class type");
2251 // Otherwise, create a new forward reference for this value and remember it.
2253 if (Ty->isLabelTy())
2254 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2256 FwdVal = new Argument(Ty);
2258 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2262 /// SetInstName - After an instruction is parsed and inserted into its
2263 /// basic block, this installs its name.
2264 bool LLParser::PerFunctionState::SetInstName(int NameID,
2265 const std::string &NameStr,
2266 LocTy NameLoc, Instruction *Inst) {
2267 // If this instruction has void type, it cannot have a name or ID specified.
2268 if (Inst->getType()->isVoidTy()) {
2269 if (NameID != -1 || !NameStr.empty())
2270 return P.Error(NameLoc, "instructions returning void cannot have a name");
2274 // If this was a numbered instruction, verify that the instruction is the
2275 // expected value and resolve any forward references.
2276 if (NameStr.empty()) {
2277 // If neither a name nor an ID was specified, just use the next ID.
2279 NameID = NumberedVals.size();
2281 if (unsigned(NameID) != NumberedVals.size())
2282 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2283 Twine(NumberedVals.size()) + "'");
2285 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2286 ForwardRefValIDs.find(NameID);
2287 if (FI != ForwardRefValIDs.end()) {
2288 if (FI->second.first->getType() != Inst->getType())
2289 return P.Error(NameLoc, "instruction forward referenced with type '" +
2290 getTypeString(FI->second.first->getType()) + "'");
2291 FI->second.first->replaceAllUsesWith(Inst);
2292 delete FI->second.first;
2293 ForwardRefValIDs.erase(FI);
2296 NumberedVals.push_back(Inst);
2300 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2301 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2302 FI = ForwardRefVals.find(NameStr);
2303 if (FI != ForwardRefVals.end()) {
2304 if (FI->second.first->getType() != Inst->getType())
2305 return P.Error(NameLoc, "instruction forward referenced with type '" +
2306 getTypeString(FI->second.first->getType()) + "'");
2307 FI->second.first->replaceAllUsesWith(Inst);
2308 delete FI->second.first;
2309 ForwardRefVals.erase(FI);
2312 // Set the name on the instruction.
2313 Inst->setName(NameStr);
2315 if (Inst->getName() != NameStr)
2316 return P.Error(NameLoc, "multiple definition of local value named '" +
2321 /// GetBB - Get a basic block with the specified name or ID, creating a
2322 /// forward reference record if needed.
2323 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2325 return cast_or_null<BasicBlock>(GetVal(Name,
2326 Type::getLabelTy(F.getContext()), Loc));
2329 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2330 return cast_or_null<BasicBlock>(GetVal(ID,
2331 Type::getLabelTy(F.getContext()), Loc));
2334 /// DefineBB - Define the specified basic block, which is either named or
2335 /// unnamed. If there is an error, this returns null otherwise it returns
2336 /// the block being defined.
2337 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2341 BB = GetBB(NumberedVals.size(), Loc);
2343 BB = GetBB(Name, Loc);
2344 if (!BB) return nullptr; // Already diagnosed error.
2346 // Move the block to the end of the function. Forward ref'd blocks are
2347 // inserted wherever they happen to be referenced.
2348 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2350 // Remove the block from forward ref sets.
2352 ForwardRefValIDs.erase(NumberedVals.size());
2353 NumberedVals.push_back(BB);
2355 // BB forward references are already in the function symbol table.
2356 ForwardRefVals.erase(Name);
2362 //===----------------------------------------------------------------------===//
2364 //===----------------------------------------------------------------------===//
2366 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2367 /// type implied. For example, if we parse "4" we don't know what integer type
2368 /// it has. The value will later be combined with its type and checked for
2369 /// sanity. PFS is used to convert function-local operands of metadata (since
2370 /// metadata operands are not just parsed here but also converted to values).
2371 /// PFS can be null when we are not parsing metadata values inside a function.
2372 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2373 ID.Loc = Lex.getLoc();
2374 switch (Lex.getKind()) {
2375 default: return TokError("expected value token");
2376 case lltok::GlobalID: // @42
2377 ID.UIntVal = Lex.getUIntVal();
2378 ID.Kind = ValID::t_GlobalID;
2380 case lltok::GlobalVar: // @foo
2381 ID.StrVal = Lex.getStrVal();
2382 ID.Kind = ValID::t_GlobalName;
2384 case lltok::LocalVarID: // %42
2385 ID.UIntVal = Lex.getUIntVal();
2386 ID.Kind = ValID::t_LocalID;
2388 case lltok::LocalVar: // %foo
2389 ID.StrVal = Lex.getStrVal();
2390 ID.Kind = ValID::t_LocalName;
2392 case lltok::exclaim: // !42, !{...}, or !"foo"
2393 return ParseMetadataValue(ID, PFS);
2395 ID.APSIntVal = Lex.getAPSIntVal();
2396 ID.Kind = ValID::t_APSInt;
2398 case lltok::APFloat:
2399 ID.APFloatVal = Lex.getAPFloatVal();
2400 ID.Kind = ValID::t_APFloat;
2402 case lltok::kw_true:
2403 ID.ConstantVal = ConstantInt::getTrue(Context);
2404 ID.Kind = ValID::t_Constant;
2406 case lltok::kw_false:
2407 ID.ConstantVal = ConstantInt::getFalse(Context);
2408 ID.Kind = ValID::t_Constant;
2410 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2411 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2412 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2414 case lltok::lbrace: {
2415 // ValID ::= '{' ConstVector '}'
2417 SmallVector<Constant*, 16> Elts;
2418 if (ParseGlobalValueVector(Elts) ||
2419 ParseToken(lltok::rbrace, "expected end of struct constant"))
2422 ID.ConstantStructElts = new Constant*[Elts.size()];
2423 ID.UIntVal = Elts.size();
2424 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2425 ID.Kind = ValID::t_ConstantStruct;
2429 // ValID ::= '<' ConstVector '>' --> Vector.
2430 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2432 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2434 SmallVector<Constant*, 16> Elts;
2435 LocTy FirstEltLoc = Lex.getLoc();
2436 if (ParseGlobalValueVector(Elts) ||
2438 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2439 ParseToken(lltok::greater, "expected end of constant"))
2442 if (isPackedStruct) {
2443 ID.ConstantStructElts = new Constant*[Elts.size()];
2444 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2445 ID.UIntVal = Elts.size();
2446 ID.Kind = ValID::t_PackedConstantStruct;
2451 return Error(ID.Loc, "constant vector must not be empty");
2453 if (!Elts[0]->getType()->isIntegerTy() &&
2454 !Elts[0]->getType()->isFloatingPointTy() &&
2455 !Elts[0]->getType()->isPointerTy())
2456 return Error(FirstEltLoc,
2457 "vector elements must have integer, pointer or floating point type");
2459 // Verify that all the vector elements have the same type.
2460 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2461 if (Elts[i]->getType() != Elts[0]->getType())
2462 return Error(FirstEltLoc,
2463 "vector element #" + Twine(i) +
2464 " is not of type '" + getTypeString(Elts[0]->getType()));
2466 ID.ConstantVal = ConstantVector::get(Elts);
2467 ID.Kind = ValID::t_Constant;
2470 case lltok::lsquare: { // Array Constant
2472 SmallVector<Constant*, 16> Elts;
2473 LocTy FirstEltLoc = Lex.getLoc();
2474 if (ParseGlobalValueVector(Elts) ||
2475 ParseToken(lltok::rsquare, "expected end of array constant"))
2478 // Handle empty element.
2480 // Use undef instead of an array because it's inconvenient to determine
2481 // the element type at this point, there being no elements to examine.
2482 ID.Kind = ValID::t_EmptyArray;
2486 if (!Elts[0]->getType()->isFirstClassType())
2487 return Error(FirstEltLoc, "invalid array element type: " +
2488 getTypeString(Elts[0]->getType()));
2490 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2492 // Verify all elements are correct type!
2493 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2494 if (Elts[i]->getType() != Elts[0]->getType())
2495 return Error(FirstEltLoc,
2496 "array element #" + Twine(i) +
2497 " is not of type '" + getTypeString(Elts[0]->getType()));
2500 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2501 ID.Kind = ValID::t_Constant;
2504 case lltok::kw_c: // c "foo"
2506 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2508 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2509 ID.Kind = ValID::t_Constant;
2512 case lltok::kw_asm: {
2513 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2515 bool HasSideEffect, AlignStack, AsmDialect;
2517 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2518 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2519 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2520 ParseStringConstant(ID.StrVal) ||
2521 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2522 ParseToken(lltok::StringConstant, "expected constraint string"))
2524 ID.StrVal2 = Lex.getStrVal();
2525 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2526 (unsigned(AsmDialect)<<2);
2527 ID.Kind = ValID::t_InlineAsm;
2531 case lltok::kw_blockaddress: {
2532 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2537 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2539 ParseToken(lltok::comma, "expected comma in block address expression")||
2540 ParseValID(Label) ||
2541 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2544 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2545 return Error(Fn.Loc, "expected function name in blockaddress");
2546 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2547 return Error(Label.Loc, "expected basic block name in blockaddress");
2549 // Try to find the function (but skip it if it's forward-referenced).
2550 GlobalValue *GV = nullptr;
2551 if (Fn.Kind == ValID::t_GlobalID) {
2552 if (Fn.UIntVal < NumberedVals.size())
2553 GV = NumberedVals[Fn.UIntVal];
2554 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2555 GV = M->getNamedValue(Fn.StrVal);
2557 Function *F = nullptr;
2559 // Confirm that it's actually a function with a definition.
2560 if (!isa<Function>(GV))
2561 return Error(Fn.Loc, "expected function name in blockaddress");
2562 F = cast<Function>(GV);
2563 if (F->isDeclaration())
2564 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2568 // Make a global variable as a placeholder for this reference.
2569 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2571 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2572 GlobalValue::InternalLinkage, nullptr, "");
2573 ID.ConstantVal = FwdRef;
2574 ID.Kind = ValID::t_Constant;
2578 // We found the function; now find the basic block. Don't use PFS, since we
2579 // might be inside a constant expression.
2581 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2582 if (Label.Kind == ValID::t_LocalID)
2583 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2585 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2587 return Error(Label.Loc, "referenced value is not a basic block");
2589 if (Label.Kind == ValID::t_LocalID)
2590 return Error(Label.Loc, "cannot take address of numeric label after "
2591 "the function is defined");
2592 BB = dyn_cast_or_null<BasicBlock>(
2593 F->getValueSymbolTable().lookup(Label.StrVal));
2595 return Error(Label.Loc, "referenced value is not a basic block");
2598 ID.ConstantVal = BlockAddress::get(F, BB);
2599 ID.Kind = ValID::t_Constant;
2603 case lltok::kw_trunc:
2604 case lltok::kw_zext:
2605 case lltok::kw_sext:
2606 case lltok::kw_fptrunc:
2607 case lltok::kw_fpext:
2608 case lltok::kw_bitcast:
2609 case lltok::kw_addrspacecast:
2610 case lltok::kw_uitofp:
2611 case lltok::kw_sitofp:
2612 case lltok::kw_fptoui:
2613 case lltok::kw_fptosi:
2614 case lltok::kw_inttoptr:
2615 case lltok::kw_ptrtoint: {
2616 unsigned Opc = Lex.getUIntVal();
2617 Type *DestTy = nullptr;
2620 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2621 ParseGlobalTypeAndValue(SrcVal) ||
2622 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2623 ParseType(DestTy) ||
2624 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2626 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2627 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2628 getTypeString(SrcVal->getType()) + "' to '" +
2629 getTypeString(DestTy) + "'");
2630 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2632 ID.Kind = ValID::t_Constant;
2635 case lltok::kw_extractvalue: {
2638 SmallVector<unsigned, 4> Indices;
2639 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2640 ParseGlobalTypeAndValue(Val) ||
2641 ParseIndexList(Indices) ||
2642 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2645 if (!Val->getType()->isAggregateType())
2646 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2647 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2648 return Error(ID.Loc, "invalid indices for extractvalue");
2649 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2650 ID.Kind = ValID::t_Constant;
2653 case lltok::kw_insertvalue: {
2655 Constant *Val0, *Val1;
2656 SmallVector<unsigned, 4> Indices;
2657 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2658 ParseGlobalTypeAndValue(Val0) ||
2659 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2660 ParseGlobalTypeAndValue(Val1) ||
2661 ParseIndexList(Indices) ||
2662 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2664 if (!Val0->getType()->isAggregateType())
2665 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2666 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2667 return Error(ID.Loc, "invalid indices for insertvalue");
2668 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2669 ID.Kind = ValID::t_Constant;
2672 case lltok::kw_icmp:
2673 case lltok::kw_fcmp: {
2674 unsigned PredVal, Opc = Lex.getUIntVal();
2675 Constant *Val0, *Val1;
2677 if (ParseCmpPredicate(PredVal, Opc) ||
2678 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2679 ParseGlobalTypeAndValue(Val0) ||
2680 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2681 ParseGlobalTypeAndValue(Val1) ||
2682 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2685 if (Val0->getType() != Val1->getType())
2686 return Error(ID.Loc, "compare operands must have the same type");
2688 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2690 if (Opc == Instruction::FCmp) {
2691 if (!Val0->getType()->isFPOrFPVectorTy())
2692 return Error(ID.Loc, "fcmp requires floating point operands");
2693 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2695 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2696 if (!Val0->getType()->isIntOrIntVectorTy() &&
2697 !Val0->getType()->getScalarType()->isPointerTy())
2698 return Error(ID.Loc, "icmp requires pointer or integer operands");
2699 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2701 ID.Kind = ValID::t_Constant;
2705 // Binary Operators.
2707 case lltok::kw_fadd:
2709 case lltok::kw_fsub:
2711 case lltok::kw_fmul:
2712 case lltok::kw_udiv:
2713 case lltok::kw_sdiv:
2714 case lltok::kw_fdiv:
2715 case lltok::kw_urem:
2716 case lltok::kw_srem:
2717 case lltok::kw_frem:
2719 case lltok::kw_lshr:
2720 case lltok::kw_ashr: {
2724 unsigned Opc = Lex.getUIntVal();
2725 Constant *Val0, *Val1;
2727 LocTy ModifierLoc = Lex.getLoc();
2728 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2729 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2730 if (EatIfPresent(lltok::kw_nuw))
2732 if (EatIfPresent(lltok::kw_nsw)) {
2734 if (EatIfPresent(lltok::kw_nuw))
2737 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2738 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2739 if (EatIfPresent(lltok::kw_exact))
2742 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2743 ParseGlobalTypeAndValue(Val0) ||
2744 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2745 ParseGlobalTypeAndValue(Val1) ||
2746 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2748 if (Val0->getType() != Val1->getType())
2749 return Error(ID.Loc, "operands of constexpr must have same type");
2750 if (!Val0->getType()->isIntOrIntVectorTy()) {
2752 return Error(ModifierLoc, "nuw only applies to integer operations");
2754 return Error(ModifierLoc, "nsw only applies to integer operations");
2756 // Check that the type is valid for the operator.
2758 case Instruction::Add:
2759 case Instruction::Sub:
2760 case Instruction::Mul:
2761 case Instruction::UDiv:
2762 case Instruction::SDiv:
2763 case Instruction::URem:
2764 case Instruction::SRem:
2765 case Instruction::Shl:
2766 case Instruction::AShr:
2767 case Instruction::LShr:
2768 if (!Val0->getType()->isIntOrIntVectorTy())
2769 return Error(ID.Loc, "constexpr requires integer operands");
2771 case Instruction::FAdd:
2772 case Instruction::FSub:
2773 case Instruction::FMul:
2774 case Instruction::FDiv:
2775 case Instruction::FRem:
2776 if (!Val0->getType()->isFPOrFPVectorTy())
2777 return Error(ID.Loc, "constexpr requires fp operands");
2779 default: llvm_unreachable("Unknown binary operator!");
2782 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2783 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2784 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2785 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2787 ID.Kind = ValID::t_Constant;
2791 // Logical Operations
2794 case lltok::kw_xor: {
2795 unsigned Opc = Lex.getUIntVal();
2796 Constant *Val0, *Val1;
2798 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2799 ParseGlobalTypeAndValue(Val0) ||
2800 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2801 ParseGlobalTypeAndValue(Val1) ||
2802 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2804 if (Val0->getType() != Val1->getType())
2805 return Error(ID.Loc, "operands of constexpr must have same type");
2806 if (!Val0->getType()->isIntOrIntVectorTy())
2807 return Error(ID.Loc,
2808 "constexpr requires integer or integer vector operands");
2809 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2810 ID.Kind = ValID::t_Constant;
2814 case lltok::kw_getelementptr:
2815 case lltok::kw_shufflevector:
2816 case lltok::kw_insertelement:
2817 case lltok::kw_extractelement:
2818 case lltok::kw_select: {
2819 unsigned Opc = Lex.getUIntVal();
2820 SmallVector<Constant*, 16> Elts;
2821 bool InBounds = false;
2823 if (Opc == Instruction::GetElementPtr)
2824 InBounds = EatIfPresent(lltok::kw_inbounds);
2825 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2826 ParseGlobalValueVector(Elts) ||
2827 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2830 if (Opc == Instruction::GetElementPtr) {
2831 if (Elts.size() == 0 ||
2832 !Elts[0]->getType()->getScalarType()->isPointerTy())
2833 return Error(ID.Loc, "getelementptr requires pointer operand");
2835 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2836 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2837 return Error(ID.Loc, "invalid indices for getelementptr");
2838 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2840 } else if (Opc == Instruction::Select) {
2841 if (Elts.size() != 3)
2842 return Error(ID.Loc, "expected three operands to select");
2843 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2845 return Error(ID.Loc, Reason);
2846 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2847 } else if (Opc == Instruction::ShuffleVector) {
2848 if (Elts.size() != 3)
2849 return Error(ID.Loc, "expected three operands to shufflevector");
2850 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2851 return Error(ID.Loc, "invalid operands to shufflevector");
2853 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2854 } else if (Opc == Instruction::ExtractElement) {
2855 if (Elts.size() != 2)
2856 return Error(ID.Loc, "expected two operands to extractelement");
2857 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2858 return Error(ID.Loc, "invalid extractelement operands");
2859 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2861 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2862 if (Elts.size() != 3)
2863 return Error(ID.Loc, "expected three operands to insertelement");
2864 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2865 return Error(ID.Loc, "invalid insertelement operands");
2867 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2870 ID.Kind = ValID::t_Constant;
2879 /// ParseGlobalValue - Parse a global value with the specified type.
2880 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2884 bool Parsed = ParseValID(ID) ||
2885 ConvertValIDToValue(Ty, ID, V, nullptr);
2886 if (V && !(C = dyn_cast<Constant>(V)))
2887 return Error(ID.Loc, "global values must be constants");
2891 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2893 return ParseType(Ty) ||
2894 ParseGlobalValue(Ty, V);
2897 bool LLParser::parseOptionalComdat(Comdat *&C) {
2899 if (!EatIfPresent(lltok::kw_comdat))
2901 if (Lex.getKind() != lltok::ComdatVar)
2902 return TokError("expected comdat variable");
2903 LocTy Loc = Lex.getLoc();
2904 StringRef Name = Lex.getStrVal();
2905 C = getComdat(Name, Loc);
2910 /// ParseGlobalValueVector
2912 /// ::= TypeAndValue (',' TypeAndValue)*
2913 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2915 if (Lex.getKind() == lltok::rbrace ||
2916 Lex.getKind() == lltok::rsquare ||
2917 Lex.getKind() == lltok::greater ||
2918 Lex.getKind() == lltok::rparen)
2922 if (ParseGlobalTypeAndValue(C)) return true;
2925 while (EatIfPresent(lltok::comma)) {
2926 if (ParseGlobalTypeAndValue(C)) return true;
2933 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2934 assert(Lex.getKind() == lltok::lbrace);
2937 SmallVector<Value*, 16> Elts;
2938 if (ParseMDNodeVector(Elts, PFS) ||
2939 ParseToken(lltok::rbrace, "expected end of metadata node"))
2942 ID.MDNodeVal = MDNode::get(Context, Elts);
2943 ID.Kind = ValID::t_MDNode;
2947 /// ParseMetadataValue
2951 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2952 assert(Lex.getKind() == lltok::exclaim);
2957 if (Lex.getKind() == lltok::lbrace)
2958 return ParseMetadataListValue(ID, PFS);
2960 // Standalone metadata reference
2962 if (Lex.getKind() == lltok::APSInt) {
2963 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2964 ID.Kind = ValID::t_MDNode;
2969 // ::= '!' STRINGCONSTANT
2970 if (ParseMDString(ID.MDStringVal)) return true;
2971 ID.Kind = ValID::t_MDString;
2976 //===----------------------------------------------------------------------===//
2977 // Function Parsing.
2978 //===----------------------------------------------------------------------===//
2980 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2981 PerFunctionState *PFS) {
2982 if (Ty->isFunctionTy())
2983 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2986 case ValID::t_LocalID:
2987 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2988 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2989 return V == nullptr;
2990 case ValID::t_LocalName:
2991 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2992 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2993 return V == nullptr;
2994 case ValID::t_InlineAsm: {
2995 PointerType *PTy = dyn_cast<PointerType>(Ty);
2997 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
2998 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2999 return Error(ID.Loc, "invalid type for inline asm constraint string");
3000 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3001 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3004 case ValID::t_MDNode:
3005 if (!Ty->isMetadataTy())
3006 return Error(ID.Loc, "metadata value must have metadata type");
3009 case ValID::t_MDString:
3010 if (!Ty->isMetadataTy())
3011 return Error(ID.Loc, "metadata value must have metadata type");
3014 case ValID::t_GlobalName:
3015 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3016 return V == nullptr;
3017 case ValID::t_GlobalID:
3018 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3019 return V == nullptr;
3020 case ValID::t_APSInt:
3021 if (!Ty->isIntegerTy())
3022 return Error(ID.Loc, "integer constant must have integer type");
3023 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3024 V = ConstantInt::get(Context, ID.APSIntVal);
3026 case ValID::t_APFloat:
3027 if (!Ty->isFloatingPointTy() ||
3028 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3029 return Error(ID.Loc, "floating point constant invalid for type");
3031 // The lexer has no type info, so builds all half, float, and double FP
3032 // constants as double. Fix this here. Long double does not need this.
3033 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3036 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3038 else if (Ty->isFloatTy())
3039 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3042 V = ConstantFP::get(Context, ID.APFloatVal);
3044 if (V->getType() != Ty)
3045 return Error(ID.Loc, "floating point constant does not have type '" +
3046 getTypeString(Ty) + "'");
3050 if (!Ty->isPointerTy())
3051 return Error(ID.Loc, "null must be a pointer type");
3052 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3054 case ValID::t_Undef:
3055 // FIXME: LabelTy should not be a first-class type.
3056 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3057 return Error(ID.Loc, "invalid type for undef constant");
3058 V = UndefValue::get(Ty);
3060 case ValID::t_EmptyArray:
3061 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3062 return Error(ID.Loc, "invalid empty array initializer");
3063 V = UndefValue::get(Ty);
3066 // FIXME: LabelTy should not be a first-class type.
3067 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3068 return Error(ID.Loc, "invalid type for null constant");
3069 V = Constant::getNullValue(Ty);
3071 case ValID::t_Constant:
3072 if (ID.ConstantVal->getType() != Ty)
3073 return Error(ID.Loc, "constant expression type mismatch");
3077 case ValID::t_ConstantStruct:
3078 case ValID::t_PackedConstantStruct:
3079 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3080 if (ST->getNumElements() != ID.UIntVal)
3081 return Error(ID.Loc,
3082 "initializer with struct type has wrong # elements");
3083 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3084 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3086 // Verify that the elements are compatible with the structtype.
3087 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3088 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3089 return Error(ID.Loc, "element " + Twine(i) +
3090 " of struct initializer doesn't match struct element type");
3092 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3095 return Error(ID.Loc, "constant expression type mismatch");
3098 llvm_unreachable("Invalid ValID");
3101 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3104 return ParseValID(ID, PFS) ||
3105 ConvertValIDToValue(Ty, ID, V, PFS);
3108 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3110 return ParseType(Ty) ||
3111 ParseValue(Ty, V, PFS);
3114 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3115 PerFunctionState &PFS) {
3118 if (ParseTypeAndValue(V, PFS)) return true;
3119 if (!isa<BasicBlock>(V))
3120 return Error(Loc, "expected a basic block");
3121 BB = cast<BasicBlock>(V);
3127 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3128 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3129 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3130 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3131 // Parse the linkage.
3132 LocTy LinkageLoc = Lex.getLoc();
3135 unsigned Visibility;
3136 unsigned DLLStorageClass;
3137 AttrBuilder RetAttrs;
3139 Type *RetType = nullptr;
3140 LocTy RetTypeLoc = Lex.getLoc();
3141 if (ParseOptionalLinkage(Linkage) ||
3142 ParseOptionalVisibility(Visibility) ||
3143 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3144 ParseOptionalCallingConv(CC) ||
3145 ParseOptionalReturnAttrs(RetAttrs) ||
3146 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3149 // Verify that the linkage is ok.
3150 switch ((GlobalValue::LinkageTypes)Linkage) {
3151 case GlobalValue::ExternalLinkage:
3152 break; // always ok.
3153 case GlobalValue::ExternalWeakLinkage:
3155 return Error(LinkageLoc, "invalid linkage for function definition");
3157 case GlobalValue::PrivateLinkage:
3158 case GlobalValue::InternalLinkage:
3159 case GlobalValue::AvailableExternallyLinkage:
3160 case GlobalValue::LinkOnceAnyLinkage:
3161 case GlobalValue::LinkOnceODRLinkage:
3162 case GlobalValue::WeakAnyLinkage:
3163 case GlobalValue::WeakODRLinkage:
3165 return Error(LinkageLoc, "invalid linkage for function declaration");
3167 case GlobalValue::AppendingLinkage:
3168 case GlobalValue::CommonLinkage:
3169 return Error(LinkageLoc, "invalid function linkage type");
3172 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3173 return Error(LinkageLoc,
3174 "symbol with local linkage must have default visibility");
3176 if (!FunctionType::isValidReturnType(RetType))
3177 return Error(RetTypeLoc, "invalid function return type");
3179 LocTy NameLoc = Lex.getLoc();
3181 std::string FunctionName;
3182 if (Lex.getKind() == lltok::GlobalVar) {
3183 FunctionName = Lex.getStrVal();
3184 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3185 unsigned NameID = Lex.getUIntVal();
3187 if (NameID != NumberedVals.size())
3188 return TokError("function expected to be numbered '%" +
3189 Twine(NumberedVals.size()) + "'");
3191 return TokError("expected function name");
3196 if (Lex.getKind() != lltok::lparen)
3197 return TokError("expected '(' in function argument list");
3199 SmallVector<ArgInfo, 8> ArgList;
3201 AttrBuilder FuncAttrs;
3202 std::vector<unsigned> FwdRefAttrGrps;
3204 std::string Section;
3208 LocTy UnnamedAddrLoc;
3209 Constant *Prefix = nullptr;
3210 Constant *Prologue = nullptr;
3213 if (ParseArgumentList(ArgList, isVarArg) ||
3214 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3216 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3218 (EatIfPresent(lltok::kw_section) &&
3219 ParseStringConstant(Section)) ||
3220 parseOptionalComdat(C) ||
3221 ParseOptionalAlignment(Alignment) ||
3222 (EatIfPresent(lltok::kw_gc) &&
3223 ParseStringConstant(GC)) ||
3224 (EatIfPresent(lltok::kw_prefix) &&
3225 ParseGlobalTypeAndValue(Prefix)) ||
3226 (EatIfPresent(lltok::kw_prologue) &&
3227 ParseGlobalTypeAndValue(Prologue)))
3230 if (FuncAttrs.contains(Attribute::Builtin))
3231 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3233 // If the alignment was parsed as an attribute, move to the alignment field.
3234 if (FuncAttrs.hasAlignmentAttr()) {
3235 Alignment = FuncAttrs.getAlignment();
3236 FuncAttrs.removeAttribute(Attribute::Alignment);
3239 // Okay, if we got here, the function is syntactically valid. Convert types
3240 // and do semantic checks.
3241 std::vector<Type*> ParamTypeList;
3242 SmallVector<AttributeSet, 8> Attrs;
3244 if (RetAttrs.hasAttributes())
3245 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3246 AttributeSet::ReturnIndex,
3249 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3250 ParamTypeList.push_back(ArgList[i].Ty);
3251 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3252 AttrBuilder B(ArgList[i].Attrs, i + 1);
3253 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3257 if (FuncAttrs.hasAttributes())
3258 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3259 AttributeSet::FunctionIndex,
3262 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3264 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3265 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3268 FunctionType::get(RetType, ParamTypeList, isVarArg);
3269 PointerType *PFT = PointerType::getUnqual(FT);
3272 if (!FunctionName.empty()) {
3273 // If this was a definition of a forward reference, remove the definition
3274 // from the forward reference table and fill in the forward ref.
3275 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3276 ForwardRefVals.find(FunctionName);
3277 if (FRVI != ForwardRefVals.end()) {
3278 Fn = M->getFunction(FunctionName);
3280 return Error(FRVI->second.second, "invalid forward reference to "
3281 "function as global value!");
3282 if (Fn->getType() != PFT)
3283 return Error(FRVI->second.second, "invalid forward reference to "
3284 "function '" + FunctionName + "' with wrong type!");
3286 ForwardRefVals.erase(FRVI);
3287 } else if ((Fn = M->getFunction(FunctionName))) {
3288 // Reject redefinitions.
3289 return Error(NameLoc, "invalid redefinition of function '" +
3290 FunctionName + "'");
3291 } else if (M->getNamedValue(FunctionName)) {
3292 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3296 // If this is a definition of a forward referenced function, make sure the
3298 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3299 = ForwardRefValIDs.find(NumberedVals.size());
3300 if (I != ForwardRefValIDs.end()) {
3301 Fn = cast<Function>(I->second.first);
3302 if (Fn->getType() != PFT)
3303 return Error(NameLoc, "type of definition and forward reference of '@" +
3304 Twine(NumberedVals.size()) + "' disagree");
3305 ForwardRefValIDs.erase(I);
3310 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3311 else // Move the forward-reference to the correct spot in the module.
3312 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3314 if (FunctionName.empty())
3315 NumberedVals.push_back(Fn);
3317 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3318 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3319 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3320 Fn->setCallingConv(CC);
3321 Fn->setAttributes(PAL);
3322 Fn->setUnnamedAddr(UnnamedAddr);
3323 Fn->setAlignment(Alignment);
3324 Fn->setSection(Section);
3326 if (!GC.empty()) Fn->setGC(GC.c_str());
3327 Fn->setPrefixData(Prefix);
3328 Fn->setPrologueData(Prologue);
3329 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3331 // Add all of the arguments we parsed to the function.
3332 Function::arg_iterator ArgIt = Fn->arg_begin();
3333 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3334 // If the argument has a name, insert it into the argument symbol table.
3335 if (ArgList[i].Name.empty()) continue;
3337 // Set the name, if it conflicted, it will be auto-renamed.
3338 ArgIt->setName(ArgList[i].Name);
3340 if (ArgIt->getName() != ArgList[i].Name)
3341 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3342 ArgList[i].Name + "'");
3348 // Check the declaration has no block address forward references.
3350 if (FunctionName.empty()) {
3351 ID.Kind = ValID::t_GlobalID;
3352 ID.UIntVal = NumberedVals.size() - 1;
3354 ID.Kind = ValID::t_GlobalName;
3355 ID.StrVal = FunctionName;
3357 auto Blocks = ForwardRefBlockAddresses.find(ID);
3358 if (Blocks != ForwardRefBlockAddresses.end())
3359 return Error(Blocks->first.Loc,
3360 "cannot take blockaddress inside a declaration");
3364 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3366 if (FunctionNumber == -1) {
3367 ID.Kind = ValID::t_GlobalName;
3368 ID.StrVal = F.getName();
3370 ID.Kind = ValID::t_GlobalID;
3371 ID.UIntVal = FunctionNumber;
3374 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3375 if (Blocks == P.ForwardRefBlockAddresses.end())
3378 for (const auto &I : Blocks->second) {
3379 const ValID &BBID = I.first;
3380 GlobalValue *GV = I.second;
3382 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3383 "Expected local id or name");
3385 if (BBID.Kind == ValID::t_LocalName)
3386 BB = GetBB(BBID.StrVal, BBID.Loc);
3388 BB = GetBB(BBID.UIntVal, BBID.Loc);
3390 return P.Error(BBID.Loc, "referenced value is not a basic block");
3392 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3393 GV->eraseFromParent();
3396 P.ForwardRefBlockAddresses.erase(Blocks);
3400 /// ParseFunctionBody
3401 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3402 bool LLParser::ParseFunctionBody(Function &Fn) {
3403 if (Lex.getKind() != lltok::lbrace)
3404 return TokError("expected '{' in function body");
3405 Lex.Lex(); // eat the {.
3407 int FunctionNumber = -1;
3408 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3410 PerFunctionState PFS(*this, Fn, FunctionNumber);
3412 // Resolve block addresses and allow basic blocks to be forward-declared
3413 // within this function.
3414 if (PFS.resolveForwardRefBlockAddresses())
3416 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3418 // We need at least one basic block.
3419 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3420 return TokError("function body requires at least one basic block");
3422 while (Lex.getKind() != lltok::rbrace &&
3423 Lex.getKind() != lltok::kw_uselistorder)
3424 if (ParseBasicBlock(PFS)) return true;
3426 while (Lex.getKind() != lltok::rbrace)
3427 if (ParseUseListOrder(&PFS))
3433 // Verify function is ok.
3434 return PFS.FinishFunction();
3438 /// ::= LabelStr? Instruction*
3439 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3440 // If this basic block starts out with a name, remember it.
3442 LocTy NameLoc = Lex.getLoc();
3443 if (Lex.getKind() == lltok::LabelStr) {
3444 Name = Lex.getStrVal();
3448 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3449 if (!BB) return true;
3451 std::string NameStr;
3453 // Parse the instructions in this block until we get a terminator.
3456 // This instruction may have three possibilities for a name: a) none
3457 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3458 LocTy NameLoc = Lex.getLoc();
3462 if (Lex.getKind() == lltok::LocalVarID) {
3463 NameID = Lex.getUIntVal();
3465 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3467 } else if (Lex.getKind() == lltok::LocalVar) {
3468 NameStr = Lex.getStrVal();
3470 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3474 switch (ParseInstruction(Inst, BB, PFS)) {
3475 default: llvm_unreachable("Unknown ParseInstruction result!");
3476 case InstError: return true;
3478 BB->getInstList().push_back(Inst);
3480 // With a normal result, we check to see if the instruction is followed by
3481 // a comma and metadata.
3482 if (EatIfPresent(lltok::comma))
3483 if (ParseInstructionMetadata(Inst, &PFS))
3486 case InstExtraComma:
3487 BB->getInstList().push_back(Inst);
3489 // If the instruction parser ate an extra comma at the end of it, it
3490 // *must* be followed by metadata.
3491 if (ParseInstructionMetadata(Inst, &PFS))
3496 // Set the name on the instruction.
3497 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3498 } while (!isa<TerminatorInst>(Inst));
3503 //===----------------------------------------------------------------------===//
3504 // Instruction Parsing.
3505 //===----------------------------------------------------------------------===//
3507 /// ParseInstruction - Parse one of the many different instructions.
3509 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3510 PerFunctionState &PFS) {
3511 lltok::Kind Token = Lex.getKind();
3512 if (Token == lltok::Eof)
3513 return TokError("found end of file when expecting more instructions");
3514 LocTy Loc = Lex.getLoc();
3515 unsigned KeywordVal = Lex.getUIntVal();
3516 Lex.Lex(); // Eat the keyword.
3519 default: return Error(Loc, "expected instruction opcode");
3520 // Terminator Instructions.
3521 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3522 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3523 case lltok::kw_br: return ParseBr(Inst, PFS);
3524 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3525 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3526 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3527 case lltok::kw_resume: return ParseResume(Inst, PFS);
3528 // Binary Operators.
3532 case lltok::kw_shl: {
3533 bool NUW = EatIfPresent(lltok::kw_nuw);
3534 bool NSW = EatIfPresent(lltok::kw_nsw);
3535 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3537 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3539 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3540 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3543 case lltok::kw_fadd:
3544 case lltok::kw_fsub:
3545 case lltok::kw_fmul:
3546 case lltok::kw_fdiv:
3547 case lltok::kw_frem: {
3548 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3549 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3553 Inst->setFastMathFlags(FMF);
3557 case lltok::kw_sdiv:
3558 case lltok::kw_udiv:
3559 case lltok::kw_lshr:
3560 case lltok::kw_ashr: {
3561 bool Exact = EatIfPresent(lltok::kw_exact);
3563 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3564 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3568 case lltok::kw_urem:
3569 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3572 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3573 case lltok::kw_icmp:
3574 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3576 case lltok::kw_trunc:
3577 case lltok::kw_zext:
3578 case lltok::kw_sext:
3579 case lltok::kw_fptrunc:
3580 case lltok::kw_fpext:
3581 case lltok::kw_bitcast:
3582 case lltok::kw_addrspacecast:
3583 case lltok::kw_uitofp:
3584 case lltok::kw_sitofp:
3585 case lltok::kw_fptoui:
3586 case lltok::kw_fptosi:
3587 case lltok::kw_inttoptr:
3588 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3590 case lltok::kw_select: return ParseSelect(Inst, PFS);
3591 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3592 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3593 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3594 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3595 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3596 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3598 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3599 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3600 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3602 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3603 case lltok::kw_load: return ParseLoad(Inst, PFS);
3604 case lltok::kw_store: return ParseStore(Inst, PFS);
3605 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3606 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3607 case lltok::kw_fence: return ParseFence(Inst, PFS);
3608 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3609 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3610 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3614 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3615 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3616 if (Opc == Instruction::FCmp) {
3617 switch (Lex.getKind()) {
3618 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3619 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3620 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3621 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3622 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3623 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3624 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3625 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3626 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3627 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3628 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3629 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3630 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3631 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3632 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3633 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3634 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3637 switch (Lex.getKind()) {
3638 default: return TokError("expected icmp predicate (e.g. 'eq')");
3639 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3640 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3641 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3642 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3643 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3644 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3645 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3646 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3647 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3648 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3655 //===----------------------------------------------------------------------===//
3656 // Terminator Instructions.
3657 //===----------------------------------------------------------------------===//
3659 /// ParseRet - Parse a return instruction.
3660 /// ::= 'ret' void (',' !dbg, !1)*
3661 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3662 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3663 PerFunctionState &PFS) {
3664 SMLoc TypeLoc = Lex.getLoc();
3666 if (ParseType(Ty, true /*void allowed*/)) return true;
3668 Type *ResType = PFS.getFunction().getReturnType();
3670 if (Ty->isVoidTy()) {
3671 if (!ResType->isVoidTy())
3672 return Error(TypeLoc, "value doesn't match function result type '" +
3673 getTypeString(ResType) + "'");
3675 Inst = ReturnInst::Create(Context);
3680 if (ParseValue(Ty, RV, PFS)) return true;
3682 if (ResType != RV->getType())
3683 return Error(TypeLoc, "value doesn't match function result type '" +
3684 getTypeString(ResType) + "'");
3686 Inst = ReturnInst::Create(Context, RV);
3692 /// ::= 'br' TypeAndValue
3693 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3694 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3697 BasicBlock *Op1, *Op2;
3698 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3700 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3701 Inst = BranchInst::Create(BB);
3705 if (Op0->getType() != Type::getInt1Ty(Context))
3706 return Error(Loc, "branch condition must have 'i1' type");
3708 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3709 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3710 ParseToken(lltok::comma, "expected ',' after true destination") ||
3711 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3714 Inst = BranchInst::Create(Op1, Op2, Op0);
3720 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3722 /// ::= (TypeAndValue ',' TypeAndValue)*
3723 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3724 LocTy CondLoc, BBLoc;
3726 BasicBlock *DefaultBB;
3727 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3728 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3729 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3730 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3733 if (!Cond->getType()->isIntegerTy())
3734 return Error(CondLoc, "switch condition must have integer type");
3736 // Parse the jump table pairs.
3737 SmallPtrSet<Value*, 32> SeenCases;
3738 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3739 while (Lex.getKind() != lltok::rsquare) {
3743 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3744 ParseToken(lltok::comma, "expected ',' after case value") ||
3745 ParseTypeAndBasicBlock(DestBB, PFS))
3748 if (!SeenCases.insert(Constant).second)
3749 return Error(CondLoc, "duplicate case value in switch");
3750 if (!isa<ConstantInt>(Constant))
3751 return Error(CondLoc, "case value is not a constant integer");
3753 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3756 Lex.Lex(); // Eat the ']'.
3758 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3759 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3760 SI->addCase(Table[i].first, Table[i].second);
3767 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3768 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3771 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3772 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3773 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3776 if (!Address->getType()->isPointerTy())
3777 return Error(AddrLoc, "indirectbr address must have pointer type");
3779 // Parse the destination list.
3780 SmallVector<BasicBlock*, 16> DestList;
3782 if (Lex.getKind() != lltok::rsquare) {
3784 if (ParseTypeAndBasicBlock(DestBB, PFS))
3786 DestList.push_back(DestBB);
3788 while (EatIfPresent(lltok::comma)) {
3789 if (ParseTypeAndBasicBlock(DestBB, PFS))
3791 DestList.push_back(DestBB);
3795 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3798 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3799 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3800 IBI->addDestination(DestList[i]);
3807 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3808 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3809 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3810 LocTy CallLoc = Lex.getLoc();
3811 AttrBuilder RetAttrs, FnAttrs;
3812 std::vector<unsigned> FwdRefAttrGrps;
3815 Type *RetType = nullptr;
3818 SmallVector<ParamInfo, 16> ArgList;
3820 BasicBlock *NormalBB, *UnwindBB;
3821 if (ParseOptionalCallingConv(CC) ||
3822 ParseOptionalReturnAttrs(RetAttrs) ||
3823 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3824 ParseValID(CalleeID) ||
3825 ParseParameterList(ArgList, PFS) ||
3826 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3828 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3829 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3830 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3831 ParseTypeAndBasicBlock(UnwindBB, PFS))
3834 // If RetType is a non-function pointer type, then this is the short syntax
3835 // for the call, which means that RetType is just the return type. Infer the
3836 // rest of the function argument types from the arguments that are present.
3837 PointerType *PFTy = nullptr;
3838 FunctionType *Ty = nullptr;
3839 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3840 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3841 // Pull out the types of all of the arguments...
3842 std::vector<Type*> ParamTypes;
3843 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3844 ParamTypes.push_back(ArgList[i].V->getType());
3846 if (!FunctionType::isValidReturnType(RetType))
3847 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3849 Ty = FunctionType::get(RetType, ParamTypes, false);
3850 PFTy = PointerType::getUnqual(Ty);
3853 // Look up the callee.
3855 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3857 // Set up the Attribute for the function.
3858 SmallVector<AttributeSet, 8> Attrs;
3859 if (RetAttrs.hasAttributes())
3860 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3861 AttributeSet::ReturnIndex,
3864 SmallVector<Value*, 8> Args;
3866 // Loop through FunctionType's arguments and ensure they are specified
3867 // correctly. Also, gather any parameter attributes.
3868 FunctionType::param_iterator I = Ty->param_begin();
3869 FunctionType::param_iterator E = Ty->param_end();
3870 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3871 Type *ExpectedTy = nullptr;
3874 } else if (!Ty->isVarArg()) {
3875 return Error(ArgList[i].Loc, "too many arguments specified");
3878 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3879 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3880 getTypeString(ExpectedTy) + "'");
3881 Args.push_back(ArgList[i].V);
3882 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3883 AttrBuilder B(ArgList[i].Attrs, i + 1);
3884 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3889 return Error(CallLoc, "not enough parameters specified for call");
3891 if (FnAttrs.hasAttributes())
3892 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3893 AttributeSet::FunctionIndex,
3896 // Finish off the Attribute and check them
3897 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3899 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3900 II->setCallingConv(CC);
3901 II->setAttributes(PAL);
3902 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3908 /// ::= 'resume' TypeAndValue
3909 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3910 Value *Exn; LocTy ExnLoc;
3911 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3914 ResumeInst *RI = ResumeInst::Create(Exn);
3919 //===----------------------------------------------------------------------===//
3920 // Binary Operators.
3921 //===----------------------------------------------------------------------===//
3924 /// ::= ArithmeticOps TypeAndValue ',' Value
3926 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3927 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3928 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3929 unsigned Opc, unsigned OperandType) {
3930 LocTy Loc; Value *LHS, *RHS;
3931 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3932 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3933 ParseValue(LHS->getType(), RHS, PFS))
3937 switch (OperandType) {
3938 default: llvm_unreachable("Unknown operand type!");
3939 case 0: // int or FP.
3940 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3941 LHS->getType()->isFPOrFPVectorTy();
3943 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3944 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3948 return Error(Loc, "invalid operand type for instruction");
3950 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3955 /// ::= ArithmeticOps TypeAndValue ',' Value {
3956 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3958 LocTy Loc; Value *LHS, *RHS;
3959 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3960 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3961 ParseValue(LHS->getType(), RHS, PFS))
3964 if (!LHS->getType()->isIntOrIntVectorTy())
3965 return Error(Loc,"instruction requires integer or integer vector operands");
3967 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3973 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3974 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3975 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3977 // Parse the integer/fp comparison predicate.
3981 if (ParseCmpPredicate(Pred, Opc) ||
3982 ParseTypeAndValue(LHS, Loc, PFS) ||
3983 ParseToken(lltok::comma, "expected ',' after compare value") ||
3984 ParseValue(LHS->getType(), RHS, PFS))
3987 if (Opc == Instruction::FCmp) {
3988 if (!LHS->getType()->isFPOrFPVectorTy())
3989 return Error(Loc, "fcmp requires floating point operands");
3990 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3992 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3993 if (!LHS->getType()->isIntOrIntVectorTy() &&
3994 !LHS->getType()->getScalarType()->isPointerTy())
3995 return Error(Loc, "icmp requires integer operands");
3996 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4001 //===----------------------------------------------------------------------===//
4002 // Other Instructions.
4003 //===----------------------------------------------------------------------===//
4007 /// ::= CastOpc TypeAndValue 'to' Type
4008 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4012 Type *DestTy = nullptr;
4013 if (ParseTypeAndValue(Op, Loc, PFS) ||
4014 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4018 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4019 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4020 return Error(Loc, "invalid cast opcode for cast from '" +
4021 getTypeString(Op->getType()) + "' to '" +
4022 getTypeString(DestTy) + "'");
4024 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4029 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4030 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4032 Value *Op0, *Op1, *Op2;
4033 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4034 ParseToken(lltok::comma, "expected ',' after select condition") ||
4035 ParseTypeAndValue(Op1, PFS) ||
4036 ParseToken(lltok::comma, "expected ',' after select value") ||
4037 ParseTypeAndValue(Op2, PFS))
4040 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4041 return Error(Loc, Reason);
4043 Inst = SelectInst::Create(Op0, Op1, Op2);
4048 /// ::= 'va_arg' TypeAndValue ',' Type
4049 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4051 Type *EltTy = nullptr;
4053 if (ParseTypeAndValue(Op, PFS) ||
4054 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4055 ParseType(EltTy, TypeLoc))
4058 if (!EltTy->isFirstClassType())
4059 return Error(TypeLoc, "va_arg requires operand with first class type");
4061 Inst = new VAArgInst(Op, EltTy);
4065 /// ParseExtractElement
4066 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4067 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4070 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4071 ParseToken(lltok::comma, "expected ',' after extract value") ||
4072 ParseTypeAndValue(Op1, PFS))
4075 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4076 return Error(Loc, "invalid extractelement operands");
4078 Inst = ExtractElementInst::Create(Op0, Op1);
4082 /// ParseInsertElement
4083 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4084 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4086 Value *Op0, *Op1, *Op2;
4087 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4088 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4089 ParseTypeAndValue(Op1, PFS) ||
4090 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4091 ParseTypeAndValue(Op2, PFS))
4094 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4095 return Error(Loc, "invalid insertelement operands");
4097 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4101 /// ParseShuffleVector
4102 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4103 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4105 Value *Op0, *Op1, *Op2;
4106 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4107 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4108 ParseTypeAndValue(Op1, PFS) ||
4109 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4110 ParseTypeAndValue(Op2, PFS))
4113 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4114 return Error(Loc, "invalid shufflevector operands");
4116 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4121 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4122 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4123 Type *Ty = nullptr; LocTy TypeLoc;
4126 if (ParseType(Ty, TypeLoc) ||
4127 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4128 ParseValue(Ty, Op0, PFS) ||
4129 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4130 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4131 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4134 bool AteExtraComma = false;
4135 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4137 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4139 if (!EatIfPresent(lltok::comma))
4142 if (Lex.getKind() == lltok::MetadataVar) {
4143 AteExtraComma = true;
4147 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4148 ParseValue(Ty, Op0, PFS) ||
4149 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4150 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4151 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4155 if (!Ty->isFirstClassType())
4156 return Error(TypeLoc, "phi node must have first class type");
4158 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4159 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4160 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4162 return AteExtraComma ? InstExtraComma : InstNormal;
4166 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4168 /// ::= 'catch' TypeAndValue
4170 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4171 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4172 Type *Ty = nullptr; LocTy TyLoc;
4173 Value *PersFn; LocTy PersFnLoc;
4175 if (ParseType(Ty, TyLoc) ||
4176 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4177 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4180 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4181 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4183 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4184 LandingPadInst::ClauseType CT;
4185 if (EatIfPresent(lltok::kw_catch))
4186 CT = LandingPadInst::Catch;
4187 else if (EatIfPresent(lltok::kw_filter))
4188 CT = LandingPadInst::Filter;
4190 return TokError("expected 'catch' or 'filter' clause type");
4194 if (ParseTypeAndValue(V, VLoc, PFS)) {
4199 // A 'catch' type expects a non-array constant. A filter clause expects an
4201 if (CT == LandingPadInst::Catch) {
4202 if (isa<ArrayType>(V->getType()))
4203 Error(VLoc, "'catch' clause has an invalid type");
4205 if (!isa<ArrayType>(V->getType()))
4206 Error(VLoc, "'filter' clause has an invalid type");
4209 LP->addClause(cast<Constant>(V));
4217 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4218 /// ParameterList OptionalAttrs
4219 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4220 /// ParameterList OptionalAttrs
4221 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4222 /// ParameterList OptionalAttrs
4223 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4224 CallInst::TailCallKind TCK) {
4225 AttrBuilder RetAttrs, FnAttrs;
4226 std::vector<unsigned> FwdRefAttrGrps;
4229 Type *RetType = nullptr;
4232 SmallVector<ParamInfo, 16> ArgList;
4233 LocTy CallLoc = Lex.getLoc();
4235 if ((TCK != CallInst::TCK_None &&
4236 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4237 ParseOptionalCallingConv(CC) ||
4238 ParseOptionalReturnAttrs(RetAttrs) ||
4239 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4240 ParseValID(CalleeID) ||
4241 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4242 PFS.getFunction().isVarArg()) ||
4243 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4247 // If RetType is a non-function pointer type, then this is the short syntax
4248 // for the call, which means that RetType is just the return type. Infer the
4249 // rest of the function argument types from the arguments that are present.
4250 PointerType *PFTy = nullptr;
4251 FunctionType *Ty = nullptr;
4252 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4253 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4254 // Pull out the types of all of the arguments...
4255 std::vector<Type*> ParamTypes;
4256 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4257 ParamTypes.push_back(ArgList[i].V->getType());
4259 if (!FunctionType::isValidReturnType(RetType))
4260 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4262 Ty = FunctionType::get(RetType, ParamTypes, false);
4263 PFTy = PointerType::getUnqual(Ty);
4266 // Look up the callee.
4268 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4270 // Set up the Attribute for the function.
4271 SmallVector<AttributeSet, 8> Attrs;
4272 if (RetAttrs.hasAttributes())
4273 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4274 AttributeSet::ReturnIndex,
4277 SmallVector<Value*, 8> Args;
4279 // Loop through FunctionType's arguments and ensure they are specified
4280 // correctly. Also, gather any parameter attributes.
4281 FunctionType::param_iterator I = Ty->param_begin();
4282 FunctionType::param_iterator E = Ty->param_end();
4283 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4284 Type *ExpectedTy = nullptr;
4287 } else if (!Ty->isVarArg()) {
4288 return Error(ArgList[i].Loc, "too many arguments specified");
4291 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4292 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4293 getTypeString(ExpectedTy) + "'");
4294 Args.push_back(ArgList[i].V);
4295 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4296 AttrBuilder B(ArgList[i].Attrs, i + 1);
4297 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4302 return Error(CallLoc, "not enough parameters specified for call");
4304 if (FnAttrs.hasAttributes())
4305 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4306 AttributeSet::FunctionIndex,
4309 // Finish off the Attribute and check them
4310 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4312 CallInst *CI = CallInst::Create(Callee, Args);
4313 CI->setTailCallKind(TCK);
4314 CI->setCallingConv(CC);
4315 CI->setAttributes(PAL);
4316 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4321 //===----------------------------------------------------------------------===//
4322 // Memory Instructions.
4323 //===----------------------------------------------------------------------===//
4326 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4327 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4328 Value *Size = nullptr;
4330 unsigned Alignment = 0;
4333 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4335 if (ParseType(Ty)) return true;
4337 bool AteExtraComma = false;
4338 if (EatIfPresent(lltok::comma)) {
4339 if (Lex.getKind() == lltok::kw_align) {
4340 if (ParseOptionalAlignment(Alignment)) return true;
4341 } else if (Lex.getKind() == lltok::MetadataVar) {
4342 AteExtraComma = true;
4344 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4345 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4350 if (Size && !Size->getType()->isIntegerTy())
4351 return Error(SizeLoc, "element count must have integer type");
4353 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4354 AI->setUsedWithInAlloca(IsInAlloca);
4356 return AteExtraComma ? InstExtraComma : InstNormal;
4360 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4361 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4362 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4363 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4364 Value *Val; LocTy Loc;
4365 unsigned Alignment = 0;
4366 bool AteExtraComma = false;
4367 bool isAtomic = false;
4368 AtomicOrdering Ordering = NotAtomic;
4369 SynchronizationScope Scope = CrossThread;
4371 if (Lex.getKind() == lltok::kw_atomic) {
4376 bool isVolatile = false;
4377 if (Lex.getKind() == lltok::kw_volatile) {
4382 if (ParseTypeAndValue(Val, Loc, PFS) ||
4383 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4384 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4387 if (!Val->getType()->isPointerTy() ||
4388 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4389 return Error(Loc, "load operand must be a pointer to a first class type");
4390 if (isAtomic && !Alignment)
4391 return Error(Loc, "atomic load must have explicit non-zero alignment");
4392 if (Ordering == Release || Ordering == AcquireRelease)
4393 return Error(Loc, "atomic load cannot use Release ordering");
4395 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4396 return AteExtraComma ? InstExtraComma : InstNormal;
4401 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4402 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4403 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4404 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4405 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4406 unsigned Alignment = 0;
4407 bool AteExtraComma = false;
4408 bool isAtomic = false;
4409 AtomicOrdering Ordering = NotAtomic;
4410 SynchronizationScope Scope = CrossThread;
4412 if (Lex.getKind() == lltok::kw_atomic) {
4417 bool isVolatile = false;
4418 if (Lex.getKind() == lltok::kw_volatile) {
4423 if (ParseTypeAndValue(Val, Loc, PFS) ||
4424 ParseToken(lltok::comma, "expected ',' after store operand") ||
4425 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4426 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4427 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4430 if (!Ptr->getType()->isPointerTy())
4431 return Error(PtrLoc, "store operand must be a pointer");
4432 if (!Val->getType()->isFirstClassType())
4433 return Error(Loc, "store operand must be a first class value");
4434 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4435 return Error(Loc, "stored value and pointer type do not match");
4436 if (isAtomic && !Alignment)
4437 return Error(Loc, "atomic store must have explicit non-zero alignment");
4438 if (Ordering == Acquire || Ordering == AcquireRelease)
4439 return Error(Loc, "atomic store cannot use Acquire ordering");
4441 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4442 return AteExtraComma ? InstExtraComma : InstNormal;
4446 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4447 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4448 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4449 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4450 bool AteExtraComma = false;
4451 AtomicOrdering SuccessOrdering = NotAtomic;
4452 AtomicOrdering FailureOrdering = NotAtomic;
4453 SynchronizationScope Scope = CrossThread;
4454 bool isVolatile = false;
4455 bool isWeak = false;
4457 if (EatIfPresent(lltok::kw_weak))
4460 if (EatIfPresent(lltok::kw_volatile))
4463 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4464 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4465 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4466 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4467 ParseTypeAndValue(New, NewLoc, PFS) ||
4468 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4469 ParseOrdering(FailureOrdering))
4472 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4473 return TokError("cmpxchg cannot be unordered");
4474 if (SuccessOrdering < FailureOrdering)
4475 return TokError("cmpxchg must be at least as ordered on success as failure");
4476 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4477 return TokError("cmpxchg failure ordering cannot include release semantics");
4478 if (!Ptr->getType()->isPointerTy())
4479 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4480 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4481 return Error(CmpLoc, "compare value and pointer type do not match");
4482 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4483 return Error(NewLoc, "new value and pointer type do not match");
4484 if (!New->getType()->isIntegerTy())
4485 return Error(NewLoc, "cmpxchg operand must be an integer");
4486 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4487 if (Size < 8 || (Size & (Size - 1)))
4488 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4491 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4492 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4493 CXI->setVolatile(isVolatile);
4494 CXI->setWeak(isWeak);
4496 return AteExtraComma ? InstExtraComma : InstNormal;
4500 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4501 /// 'singlethread'? AtomicOrdering
4502 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4503 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4504 bool AteExtraComma = false;
4505 AtomicOrdering Ordering = NotAtomic;
4506 SynchronizationScope Scope = CrossThread;
4507 bool isVolatile = false;
4508 AtomicRMWInst::BinOp Operation;
4510 if (EatIfPresent(lltok::kw_volatile))
4513 switch (Lex.getKind()) {
4514 default: return TokError("expected binary operation in atomicrmw");
4515 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4516 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4517 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4518 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4519 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4520 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4521 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4522 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4523 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4524 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4525 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4527 Lex.Lex(); // Eat the operation.
4529 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4530 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4531 ParseTypeAndValue(Val, ValLoc, PFS) ||
4532 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4535 if (Ordering == Unordered)
4536 return TokError("atomicrmw cannot be unordered");
4537 if (!Ptr->getType()->isPointerTy())
4538 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4539 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4540 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4541 if (!Val->getType()->isIntegerTy())
4542 return Error(ValLoc, "atomicrmw operand must be an integer");
4543 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4544 if (Size < 8 || (Size & (Size - 1)))
4545 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4548 AtomicRMWInst *RMWI =
4549 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4550 RMWI->setVolatile(isVolatile);
4552 return AteExtraComma ? InstExtraComma : InstNormal;
4556 /// ::= 'fence' 'singlethread'? AtomicOrdering
4557 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4558 AtomicOrdering Ordering = NotAtomic;
4559 SynchronizationScope Scope = CrossThread;
4560 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4563 if (Ordering == Unordered)
4564 return TokError("fence cannot be unordered");
4565 if (Ordering == Monotonic)
4566 return TokError("fence cannot be monotonic");
4568 Inst = new FenceInst(Context, Ordering, Scope);
4572 /// ParseGetElementPtr
4573 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4574 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4575 Value *Ptr = nullptr;
4576 Value *Val = nullptr;
4579 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4581 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4583 Type *BaseType = Ptr->getType();
4584 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4585 if (!BasePointerType)
4586 return Error(Loc, "base of getelementptr must be a pointer");
4588 SmallVector<Value*, 16> Indices;
4589 bool AteExtraComma = false;
4590 while (EatIfPresent(lltok::comma)) {
4591 if (Lex.getKind() == lltok::MetadataVar) {
4592 AteExtraComma = true;
4595 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4596 if (!Val->getType()->getScalarType()->isIntegerTy())
4597 return Error(EltLoc, "getelementptr index must be an integer");
4598 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4599 return Error(EltLoc, "getelementptr index type missmatch");
4600 if (Val->getType()->isVectorTy()) {
4601 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4602 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4603 if (ValNumEl != PtrNumEl)
4604 return Error(EltLoc,
4605 "getelementptr vector index has a wrong number of elements");
4607 Indices.push_back(Val);
4610 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4611 return Error(Loc, "base element of getelementptr must be sized");
4613 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4614 return Error(Loc, "invalid getelementptr indices");
4615 Inst = GetElementPtrInst::Create(Ptr, Indices);
4617 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4618 return AteExtraComma ? InstExtraComma : InstNormal;
4621 /// ParseExtractValue
4622 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4623 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4624 Value *Val; LocTy Loc;
4625 SmallVector<unsigned, 4> Indices;
4627 if (ParseTypeAndValue(Val, Loc, PFS) ||
4628 ParseIndexList(Indices, AteExtraComma))
4631 if (!Val->getType()->isAggregateType())
4632 return Error(Loc, "extractvalue operand must be aggregate type");
4634 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4635 return Error(Loc, "invalid indices for extractvalue");
4636 Inst = ExtractValueInst::Create(Val, Indices);
4637 return AteExtraComma ? InstExtraComma : InstNormal;
4640 /// ParseInsertValue
4641 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4642 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4643 Value *Val0, *Val1; LocTy Loc0, Loc1;
4644 SmallVector<unsigned, 4> Indices;
4646 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4647 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4648 ParseTypeAndValue(Val1, Loc1, PFS) ||
4649 ParseIndexList(Indices, AteExtraComma))
4652 if (!Val0->getType()->isAggregateType())
4653 return Error(Loc0, "insertvalue operand must be aggregate type");
4655 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4656 return Error(Loc0, "invalid indices for insertvalue");
4657 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4658 return AteExtraComma ? InstExtraComma : InstNormal;
4661 //===----------------------------------------------------------------------===//
4662 // Embedded metadata.
4663 //===----------------------------------------------------------------------===//
4665 /// ParseMDNodeVector
4666 /// ::= Element (',' Element)*
4668 /// ::= 'null' | TypeAndValue
4669 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4670 PerFunctionState *PFS) {
4671 // Check for an empty list.
4672 if (Lex.getKind() == lltok::rbrace)
4675 bool IsLocal = false;
4678 return TokError("unexpected operand after function-local metadata");
4680 // Null is a special case since it is typeless.
4681 if (EatIfPresent(lltok::kw_null)) {
4682 Elts.push_back(nullptr);
4687 if (ParseTypeAndValue(V, PFS)) return true;
4690 if (isa<MDNode>(V) && cast<MDNode>(V)->isFunctionLocal())
4691 return TokError("unexpected nested function-local metadata");
4692 if (!V->getType()->isMetadataTy() && !isa<Constant>(V)) {
4693 assert(PFS && "Unexpected function-local metadata without PFS");
4694 if (Elts.size() > 1)
4695 return TokError("unexpected function-local metadata");
4698 } while (EatIfPresent(lltok::comma));
4703 //===----------------------------------------------------------------------===//
4704 // Use-list order directives.
4705 //===----------------------------------------------------------------------===//
4706 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4709 return Error(Loc, "value has no uses");
4711 unsigned NumUses = 0;
4712 SmallDenseMap<const Use *, unsigned, 16> Order;
4713 for (const Use &U : V->uses()) {
4714 if (++NumUses > Indexes.size())
4716 Order[&U] = Indexes[NumUses - 1];
4719 return Error(Loc, "value only has one use");
4720 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4721 return Error(Loc, "wrong number of indexes, expected " +
4722 Twine(std::distance(V->use_begin(), V->use_end())));
4724 V->sortUseList([&](const Use &L, const Use &R) {
4725 return Order.lookup(&L) < Order.lookup(&R);
4730 /// ParseUseListOrderIndexes
4731 /// ::= '{' uint32 (',' uint32)+ '}'
4732 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4733 SMLoc Loc = Lex.getLoc();
4734 if (ParseToken(lltok::lbrace, "expected '{' here"))
4736 if (Lex.getKind() == lltok::rbrace)
4737 return Lex.Error("expected non-empty list of uselistorder indexes");
4739 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4740 // indexes should be distinct numbers in the range [0, size-1], and should
4742 unsigned Offset = 0;
4744 bool IsOrdered = true;
4745 assert(Indexes.empty() && "Expected empty order vector");
4748 if (ParseUInt32(Index))
4751 // Update consistency checks.
4752 Offset += Index - Indexes.size();
4753 Max = std::max(Max, Index);
4754 IsOrdered &= Index == Indexes.size();
4756 Indexes.push_back(Index);
4757 } while (EatIfPresent(lltok::comma));
4759 if (ParseToken(lltok::rbrace, "expected '}' here"))
4762 if (Indexes.size() < 2)
4763 return Error(Loc, "expected >= 2 uselistorder indexes");
4764 if (Offset != 0 || Max >= Indexes.size())
4765 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4767 return Error(Loc, "expected uselistorder indexes to change the order");
4772 /// ParseUseListOrder
4773 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4774 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4775 SMLoc Loc = Lex.getLoc();
4776 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4780 SmallVector<unsigned, 16> Indexes;
4781 if (ParseTypeAndValue(V, PFS) ||
4782 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4783 ParseUseListOrderIndexes(Indexes))
4786 return sortUseListOrder(V, Indexes, Loc);
4789 /// ParseUseListOrderBB
4790 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4791 bool LLParser::ParseUseListOrderBB() {
4792 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4793 SMLoc Loc = Lex.getLoc();
4797 SmallVector<unsigned, 16> Indexes;
4798 if (ParseValID(Fn) ||
4799 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4800 ParseValID(Label) ||
4801 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4802 ParseUseListOrderIndexes(Indexes))
4805 // Check the function.
4807 if (Fn.Kind == ValID::t_GlobalName)
4808 GV = M->getNamedValue(Fn.StrVal);
4809 else if (Fn.Kind == ValID::t_GlobalID)
4810 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4812 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4814 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4815 auto *F = dyn_cast<Function>(GV);
4817 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4818 if (F->isDeclaration())
4819 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4821 // Check the basic block.
4822 if (Label.Kind == ValID::t_LocalID)
4823 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4824 if (Label.Kind != ValID::t_LocalName)
4825 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4826 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4828 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4829 if (!isa<BasicBlock>(V))
4830 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4832 return sortUseListOrder(V, Indexes, Loc);