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/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/Module.h"
23 #include "llvm/IR/Operator.h"
24 #include "llvm/IR/ValueSymbolTable.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
68 // Handle any function attribute group forward references.
69 for (std::map<Value*, std::vector<unsigned> >::iterator
70 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
73 std::vector<unsigned> &Vec = I->second;
76 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
78 B.merge(NumberedAttrBuilders[*VI]);
80 if (Function *Fn = dyn_cast<Function>(V)) {
81 AttributeSet AS = Fn->getAttributes();
82 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
83 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
84 AS.getFnAttributes());
88 // If the alignment was parsed as an attribute, move to the alignment
90 if (FnAttrs.hasAlignmentAttr()) {
91 Fn->setAlignment(FnAttrs.getAlignment());
92 FnAttrs.removeAttribute(Attribute::Alignment);
95 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
96 AttributeSet::get(Context,
97 AttributeSet::FunctionIndex,
99 Fn->setAttributes(AS);
100 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
101 AttributeSet AS = CI->getAttributes();
102 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
103 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
104 AS.getFnAttributes());
106 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
107 AttributeSet::get(Context,
108 AttributeSet::FunctionIndex,
110 CI->setAttributes(AS);
111 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
112 AttributeSet AS = II->getAttributes();
113 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
114 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
115 AS.getFnAttributes());
117 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
118 AttributeSet::get(Context,
119 AttributeSet::FunctionIndex,
121 II->setAttributes(AS);
123 llvm_unreachable("invalid object with forward attribute group reference");
127 // If there are entries in ForwardRefBlockAddresses at this point, they are
128 // references after the function was defined. Resolve those now.
129 while (!ForwardRefBlockAddresses.empty()) {
130 // Okay, we are referencing an already-parsed function, resolve them now.
132 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
133 if (Fn.Kind == ValID::t_GlobalName)
134 TheFn = M->getFunction(Fn.StrVal);
135 else if (Fn.UIntVal < NumberedVals.size())
136 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
139 return Error(Fn.Loc, "unknown function referenced by blockaddress");
141 // Resolve all these references.
142 if (ResolveForwardRefBlockAddresses(TheFn,
143 ForwardRefBlockAddresses.begin()->second,
147 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
150 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
151 if (NumberedTypes[i].second.isValid())
152 return Error(NumberedTypes[i].second,
153 "use of undefined type '%" + Twine(i) + "'");
155 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
156 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
157 if (I->second.second.isValid())
158 return Error(I->second.second,
159 "use of undefined type named '" + I->getKey() + "'");
161 if (!ForwardRefVals.empty())
162 return Error(ForwardRefVals.begin()->second.second,
163 "use of undefined value '@" + ForwardRefVals.begin()->first +
166 if (!ForwardRefValIDs.empty())
167 return Error(ForwardRefValIDs.begin()->second.second,
168 "use of undefined value '@" +
169 Twine(ForwardRefValIDs.begin()->first) + "'");
171 if (!ForwardRefMDNodes.empty())
172 return Error(ForwardRefMDNodes.begin()->second.second,
173 "use of undefined metadata '!" +
174 Twine(ForwardRefMDNodes.begin()->first) + "'");
177 // Look for intrinsic functions and CallInst that need to be upgraded
178 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
179 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
184 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
185 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
186 PerFunctionState *PFS) {
187 // Loop over all the references, resolving them.
188 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
191 if (Refs[i].first.Kind == ValID::t_LocalName)
192 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
194 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
195 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
196 return Error(Refs[i].first.Loc,
197 "cannot take address of numeric label after the function is defined");
199 Res = dyn_cast_or_null<BasicBlock>(
200 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
204 return Error(Refs[i].first.Loc,
205 "referenced value is not a basic block");
207 // Get the BlockAddress for this and update references to use it.
208 BlockAddress *BA = BlockAddress::get(TheFn, Res);
209 Refs[i].second->replaceAllUsesWith(BA);
210 Refs[i].second->eraseFromParent();
216 //===----------------------------------------------------------------------===//
217 // Top-Level Entities
218 //===----------------------------------------------------------------------===//
220 bool LLParser::ParseTopLevelEntities() {
222 switch (Lex.getKind()) {
223 default: return TokError("expected top-level entity");
224 case lltok::Eof: return false;
225 case lltok::kw_declare: if (ParseDeclare()) return true; break;
226 case lltok::kw_define: if (ParseDefine()) return true; break;
227 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
228 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
229 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
230 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
231 case lltok::LocalVar: if (ParseNamedType()) return true; break;
232 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
233 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
234 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
235 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
237 // The Global variable production with no name can have many different
238 // optional leading prefixes, the production is:
239 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
240 // OptionalAddrSpace OptionalUnNammedAddr
241 // ('constant'|'global') ...
242 case lltok::kw_private: // OptionalLinkage
243 case lltok::kw_linker_private: // OptionalLinkage
244 case lltok::kw_linker_private_weak: // OptionalLinkage
245 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
246 case lltok::kw_internal: // OptionalLinkage
247 case lltok::kw_weak: // OptionalLinkage
248 case lltok::kw_weak_odr: // OptionalLinkage
249 case lltok::kw_linkonce: // OptionalLinkage
250 case lltok::kw_linkonce_odr: // OptionalLinkage
251 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
252 case lltok::kw_appending: // OptionalLinkage
253 case lltok::kw_dllexport: // OptionalLinkage
254 case lltok::kw_common: // OptionalLinkage
255 case lltok::kw_dllimport: // OptionalLinkage
256 case lltok::kw_extern_weak: // OptionalLinkage
257 case lltok::kw_external: { // OptionalLinkage
258 unsigned Linkage, Visibility;
259 if (ParseOptionalLinkage(Linkage) ||
260 ParseOptionalVisibility(Visibility) ||
261 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
265 case lltok::kw_default: // OptionalVisibility
266 case lltok::kw_hidden: // OptionalVisibility
267 case lltok::kw_protected: { // OptionalVisibility
269 if (ParseOptionalVisibility(Visibility) ||
270 ParseGlobal("", SMLoc(), 0, false, Visibility))
275 case lltok::kw_thread_local: // OptionalThreadLocal
276 case lltok::kw_addrspace: // OptionalAddrSpace
277 case lltok::kw_constant: // GlobalType
278 case lltok::kw_global: // GlobalType
279 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
282 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
289 /// ::= 'module' 'asm' STRINGCONSTANT
290 bool LLParser::ParseModuleAsm() {
291 assert(Lex.getKind() == lltok::kw_module);
295 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
296 ParseStringConstant(AsmStr)) return true;
298 M->appendModuleInlineAsm(AsmStr);
303 /// ::= 'target' 'triple' '=' STRINGCONSTANT
304 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
305 bool LLParser::ParseTargetDefinition() {
306 assert(Lex.getKind() == lltok::kw_target);
309 default: return TokError("unknown target property");
310 case lltok::kw_triple:
312 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
313 ParseStringConstant(Str))
315 M->setTargetTriple(Str);
317 case lltok::kw_datalayout:
319 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
320 ParseStringConstant(Str))
322 M->setDataLayout(Str);
328 /// ::= 'deplibs' '=' '[' ']'
329 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
330 /// FIXME: Remove in 4.0. Currently parse, but ignore.
331 bool LLParser::ParseDepLibs() {
332 assert(Lex.getKind() == lltok::kw_deplibs);
334 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
335 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
338 if (EatIfPresent(lltok::rsquare))
343 if (ParseStringConstant(Str)) return true;
344 } while (EatIfPresent(lltok::comma));
346 return ParseToken(lltok::rsquare, "expected ']' at end of list");
349 /// ParseUnnamedType:
350 /// ::= LocalVarID '=' 'type' type
351 bool LLParser::ParseUnnamedType() {
352 LocTy TypeLoc = Lex.getLoc();
353 unsigned TypeID = Lex.getUIntVal();
354 Lex.Lex(); // eat LocalVarID;
356 if (ParseToken(lltok::equal, "expected '=' after name") ||
357 ParseToken(lltok::kw_type, "expected 'type' after '='"))
360 if (TypeID >= NumberedTypes.size())
361 NumberedTypes.resize(TypeID+1);
364 if (ParseStructDefinition(TypeLoc, "",
365 NumberedTypes[TypeID], Result)) return true;
367 if (!isa<StructType>(Result)) {
368 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
370 return Error(TypeLoc, "non-struct types may not be recursive");
371 Entry.first = Result;
372 Entry.second = SMLoc();
380 /// ::= LocalVar '=' 'type' type
381 bool LLParser::ParseNamedType() {
382 std::string Name = Lex.getStrVal();
383 LocTy NameLoc = Lex.getLoc();
384 Lex.Lex(); // eat LocalVar.
386 if (ParseToken(lltok::equal, "expected '=' after name") ||
387 ParseToken(lltok::kw_type, "expected 'type' after name"))
391 if (ParseStructDefinition(NameLoc, Name,
392 NamedTypes[Name], Result)) return true;
394 if (!isa<StructType>(Result)) {
395 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
397 return Error(NameLoc, "non-struct types may not be recursive");
398 Entry.first = Result;
399 Entry.second = SMLoc();
407 /// ::= 'declare' FunctionHeader
408 bool LLParser::ParseDeclare() {
409 assert(Lex.getKind() == lltok::kw_declare);
413 return ParseFunctionHeader(F, false);
417 /// ::= 'define' FunctionHeader '{' ...
418 bool LLParser::ParseDefine() {
419 assert(Lex.getKind() == lltok::kw_define);
423 return ParseFunctionHeader(F, true) ||
424 ParseFunctionBody(*F);
430 bool LLParser::ParseGlobalType(bool &IsConstant) {
431 if (Lex.getKind() == lltok::kw_constant)
433 else if (Lex.getKind() == lltok::kw_global)
437 return TokError("expected 'global' or 'constant'");
443 /// ParseUnnamedGlobal:
444 /// OptionalVisibility ALIAS ...
445 /// OptionalLinkage OptionalVisibility ... -> global variable
446 /// GlobalID '=' OptionalVisibility ALIAS ...
447 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
448 bool LLParser::ParseUnnamedGlobal() {
449 unsigned VarID = NumberedVals.size();
451 LocTy NameLoc = Lex.getLoc();
453 // Handle the GlobalID form.
454 if (Lex.getKind() == lltok::GlobalID) {
455 if (Lex.getUIntVal() != VarID)
456 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
458 Lex.Lex(); // eat GlobalID;
460 if (ParseToken(lltok::equal, "expected '=' after name"))
465 unsigned Linkage, Visibility;
466 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
467 ParseOptionalVisibility(Visibility))
470 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
471 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
472 return ParseAlias(Name, NameLoc, Visibility);
475 /// ParseNamedGlobal:
476 /// GlobalVar '=' OptionalVisibility ALIAS ...
477 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
478 bool LLParser::ParseNamedGlobal() {
479 assert(Lex.getKind() == lltok::GlobalVar);
480 LocTy NameLoc = Lex.getLoc();
481 std::string Name = Lex.getStrVal();
485 unsigned Linkage, Visibility;
486 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
487 ParseOptionalLinkage(Linkage, HasLinkage) ||
488 ParseOptionalVisibility(Visibility))
491 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
492 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
493 return ParseAlias(Name, NameLoc, Visibility);
497 // ::= '!' STRINGCONSTANT
498 bool LLParser::ParseMDString(MDString *&Result) {
500 if (ParseStringConstant(Str)) return true;
501 Result = MDString::get(Context, Str);
506 // ::= '!' MDNodeNumber
508 /// This version of ParseMDNodeID returns the slot number and null in the case
509 /// of a forward reference.
510 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
511 // !{ ..., !42, ... }
512 if (ParseUInt32(SlotNo)) return true;
514 // Check existing MDNode.
515 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
516 Result = NumberedMetadata[SlotNo];
522 bool LLParser::ParseMDNodeID(MDNode *&Result) {
523 // !{ ..., !42, ... }
525 if (ParseMDNodeID(Result, MID)) return true;
527 // If not a forward reference, just return it now.
528 if (Result) return false;
530 // Otherwise, create MDNode forward reference.
531 MDNode *FwdNode = MDNode::getTemporary(Context, None);
532 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
534 if (NumberedMetadata.size() <= MID)
535 NumberedMetadata.resize(MID+1);
536 NumberedMetadata[MID] = FwdNode;
541 /// ParseNamedMetadata:
542 /// !foo = !{ !1, !2 }
543 bool LLParser::ParseNamedMetadata() {
544 assert(Lex.getKind() == lltok::MetadataVar);
545 std::string Name = Lex.getStrVal();
548 if (ParseToken(lltok::equal, "expected '=' here") ||
549 ParseToken(lltok::exclaim, "Expected '!' here") ||
550 ParseToken(lltok::lbrace, "Expected '{' here"))
553 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
554 if (Lex.getKind() != lltok::rbrace)
556 if (ParseToken(lltok::exclaim, "Expected '!' here"))
560 if (ParseMDNodeID(N)) return true;
562 } while (EatIfPresent(lltok::comma));
564 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
579 SmallVector<Value *, 16> Elts;
580 if (ParseUInt32(MetadataID) ||
581 ParseToken(lltok::equal, "expected '=' here") ||
582 ParseType(Ty, TyLoc) ||
583 ParseToken(lltok::exclaim, "Expected '!' here") ||
584 ParseToken(lltok::lbrace, "Expected '{' here") ||
585 ParseMDNodeVector(Elts, NULL) ||
586 ParseToken(lltok::rbrace, "expected end of metadata node"))
589 MDNode *Init = MDNode::get(Context, Elts);
591 // See if this was forward referenced, if so, handle it.
592 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
593 FI = ForwardRefMDNodes.find(MetadataID);
594 if (FI != ForwardRefMDNodes.end()) {
595 MDNode *Temp = FI->second.first;
596 Temp->replaceAllUsesWith(Init);
597 MDNode::deleteTemporary(Temp);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (MetadataID >= NumberedMetadata.size())
603 NumberedMetadata.resize(MetadataID+1);
605 if (NumberedMetadata[MetadataID] != 0)
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID] = Init;
614 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
617 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
618 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
620 /// Everything through visibility has already been parsed.
622 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
623 unsigned Visibility) {
624 assert(Lex.getKind() == lltok::kw_alias);
627 LocTy LinkageLoc = Lex.getLoc();
628 if (ParseOptionalLinkage(Linkage))
631 if (Linkage != GlobalValue::ExternalLinkage &&
632 Linkage != GlobalValue::WeakAnyLinkage &&
633 Linkage != GlobalValue::WeakODRLinkage &&
634 Linkage != GlobalValue::InternalLinkage &&
635 Linkage != GlobalValue::PrivateLinkage &&
636 Linkage != GlobalValue::LinkerPrivateLinkage &&
637 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
638 return Error(LinkageLoc, "invalid linkage type for alias");
641 LocTy AliaseeLoc = Lex.getLoc();
642 if (Lex.getKind() != lltok::kw_bitcast &&
643 Lex.getKind() != lltok::kw_getelementptr) {
644 if (ParseGlobalTypeAndValue(Aliasee)) return true;
646 // The bitcast dest type is not present, it is implied by the dest type.
648 if (ParseValID(ID)) return true;
649 if (ID.Kind != ValID::t_Constant)
650 return Error(AliaseeLoc, "invalid aliasee");
651 Aliasee = ID.ConstantVal;
654 if (!Aliasee->getType()->isPointerTy())
655 return Error(AliaseeLoc, "alias must have pointer type");
657 // Okay, create the alias but do not insert it into the module yet.
658 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
659 (GlobalValue::LinkageTypes)Linkage, Name,
661 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
663 // See if this value already exists in the symbol table. If so, it is either
664 // a redefinition or a definition of a forward reference.
665 if (GlobalValue *Val = M->getNamedValue(Name)) {
666 // See if this was a redefinition. If so, there is no entry in
668 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
669 I = ForwardRefVals.find(Name);
670 if (I == ForwardRefVals.end())
671 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
673 // Otherwise, this was a definition of forward ref. Verify that types
675 if (Val->getType() != GA->getType())
676 return Error(NameLoc,
677 "forward reference and definition of alias have different types");
679 // If they agree, just RAUW the old value with the alias and remove the
681 Val->replaceAllUsesWith(GA);
682 Val->eraseFromParent();
683 ForwardRefVals.erase(I);
686 // Insert into the module, we know its name won't collide now.
687 M->getAliasList().push_back(GA);
688 assert(GA->getName() == Name && "Should not be a name conflict!");
694 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
695 /// OptionalAddrSpace OptionalUnNammedAddr
696 /// OptionalExternallyInitialized GlobalType Type Const
697 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
698 /// OptionalAddrSpace OptionalUnNammedAddr
699 /// OptionalExternallyInitialized GlobalType Type Const
701 /// Everything through visibility has been parsed already.
703 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
704 unsigned Linkage, bool HasLinkage,
705 unsigned Visibility) {
707 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
708 GlobalVariable::ThreadLocalMode TLM;
709 LocTy UnnamedAddrLoc;
710 LocTy IsExternallyInitializedLoc;
714 if (ParseOptionalThreadLocal(TLM) ||
715 ParseOptionalAddrSpace(AddrSpace) ||
716 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
718 ParseOptionalToken(lltok::kw_externally_initialized,
719 IsExternallyInitialized,
720 &IsExternallyInitializedLoc) ||
721 ParseGlobalType(IsConstant) ||
722 ParseType(Ty, TyLoc))
725 // If the linkage is specified and is external, then no initializer is
728 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
729 Linkage != GlobalValue::ExternalWeakLinkage &&
730 Linkage != GlobalValue::ExternalLinkage)) {
731 if (ParseGlobalValue(Ty, Init))
735 if (Ty->isFunctionTy() || Ty->isLabelTy())
736 return Error(TyLoc, "invalid type for global variable");
738 GlobalVariable *GV = 0;
740 // See if the global was forward referenced, if so, use the global.
742 if (GlobalValue *GVal = M->getNamedValue(Name)) {
743 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
744 return Error(NameLoc, "redefinition of global '@" + Name + "'");
745 GV = cast<GlobalVariable>(GVal);
748 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
749 I = ForwardRefValIDs.find(NumberedVals.size());
750 if (I != ForwardRefValIDs.end()) {
751 GV = cast<GlobalVariable>(I->second.first);
752 ForwardRefValIDs.erase(I);
757 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
758 Name, 0, GlobalVariable::NotThreadLocal,
761 if (GV->getType()->getElementType() != Ty)
763 "forward reference and definition of global have different types");
765 // Move the forward-reference to the correct spot in the module.
766 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
770 NumberedVals.push_back(GV);
772 // Set the parsed properties on the global.
774 GV->setInitializer(Init);
775 GV->setConstant(IsConstant);
776 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
777 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
778 GV->setExternallyInitialized(IsExternallyInitialized);
779 GV->setThreadLocalMode(TLM);
780 GV->setUnnamedAddr(UnnamedAddr);
782 // Parse attributes on the global.
783 while (Lex.getKind() == lltok::comma) {
786 if (Lex.getKind() == lltok::kw_section) {
788 GV->setSection(Lex.getStrVal());
789 if (ParseToken(lltok::StringConstant, "expected global section string"))
791 } else if (Lex.getKind() == lltok::kw_align) {
793 if (ParseOptionalAlignment(Alignment)) return true;
794 GV->setAlignment(Alignment);
796 TokError("unknown global variable property!");
803 /// ParseUnnamedAttrGrp
804 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
805 bool LLParser::ParseUnnamedAttrGrp() {
806 assert(Lex.getKind() == lltok::kw_attributes);
807 LocTy AttrGrpLoc = Lex.getLoc();
810 assert(Lex.getKind() == lltok::AttrGrpID);
811 unsigned VarID = Lex.getUIntVal();
812 std::vector<unsigned> unused;
816 if (ParseToken(lltok::equal, "expected '=' here") ||
817 ParseToken(lltok::lbrace, "expected '{' here") ||
818 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
820 ParseToken(lltok::rbrace, "expected end of attribute group"))
823 if (!NumberedAttrBuilders[VarID].hasAttributes())
824 return Error(AttrGrpLoc, "attribute group has no attributes");
829 /// ParseFnAttributeValuePairs
830 /// ::= <attr> | <attr> '=' <value>
831 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
832 std::vector<unsigned> &FwdRefAttrGrps,
833 bool inAttrGrp, LocTy &BuiltinLoc) {
834 bool HaveError = false;
839 lltok::Kind Token = Lex.getKind();
840 if (Token == lltok::kw_builtin)
841 BuiltinLoc = Lex.getLoc();
844 if (!inAttrGrp) return HaveError;
845 return Error(Lex.getLoc(), "unterminated attribute group");
850 case lltok::AttrGrpID: {
851 // Allow a function to reference an attribute group:
853 // define void @foo() #1 { ... }
857 "cannot have an attribute group reference in an attribute group");
859 unsigned AttrGrpNum = Lex.getUIntVal();
860 if (inAttrGrp) break;
862 // Save the reference to the attribute group. We'll fill it in later.
863 FwdRefAttrGrps.push_back(AttrGrpNum);
866 // Target-dependent attributes:
867 case lltok::StringConstant: {
868 std::string Attr = Lex.getStrVal();
871 if (EatIfPresent(lltok::equal) &&
872 ParseStringConstant(Val))
875 B.addAttribute(Attr, Val);
879 // Target-independent attributes:
880 case lltok::kw_align: {
881 // As a hack, we allow function alignment to be initially parsed as an
882 // attribute on a function declaration/definition or added to an attribute
883 // group and later moved to the alignment field.
887 if (ParseToken(lltok::equal, "expected '=' here") ||
888 ParseUInt32(Alignment))
891 if (ParseOptionalAlignment(Alignment))
894 B.addAlignmentAttr(Alignment);
897 case lltok::kw_alignstack: {
901 if (ParseToken(lltok::equal, "expected '=' here") ||
902 ParseUInt32(Alignment))
905 if (ParseOptionalStackAlignment(Alignment))
908 B.addStackAlignmentAttr(Alignment);
911 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
912 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
913 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
914 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
915 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
916 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
917 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
918 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
919 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
920 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
921 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
922 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
923 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
924 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
925 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
926 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
927 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
928 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
929 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
930 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
931 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
932 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
933 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
934 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
935 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
936 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
939 case lltok::kw_inreg:
940 case lltok::kw_signext:
941 case lltok::kw_zeroext:
944 "invalid use of attribute on a function");
946 case lltok::kw_byval:
948 case lltok::kw_noalias:
949 case lltok::kw_nocapture:
950 case lltok::kw_returned:
954 "invalid use of parameter-only attribute on a function");
962 //===----------------------------------------------------------------------===//
963 // GlobalValue Reference/Resolution Routines.
964 //===----------------------------------------------------------------------===//
966 /// GetGlobalVal - Get a value with the specified name or ID, creating a
967 /// forward reference record if needed. This can return null if the value
968 /// exists but does not have the right type.
969 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
971 PointerType *PTy = dyn_cast<PointerType>(Ty);
973 Error(Loc, "global variable reference must have pointer type");
977 // Look this name up in the normal function symbol table.
979 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
981 // If this is a forward reference for the value, see if we already created a
982 // forward ref record.
984 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
985 I = ForwardRefVals.find(Name);
986 if (I != ForwardRefVals.end())
987 Val = I->second.first;
990 // If we have the value in the symbol table or fwd-ref table, return it.
992 if (Val->getType() == Ty) return Val;
993 Error(Loc, "'@" + Name + "' defined with type '" +
994 getTypeString(Val->getType()) + "'");
998 // Otherwise, create a new forward reference for this value and remember it.
1000 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1001 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1003 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1004 GlobalValue::ExternalWeakLinkage, 0, Name,
1005 0, GlobalVariable::NotThreadLocal,
1006 PTy->getAddressSpace());
1008 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1012 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1013 PointerType *PTy = dyn_cast<PointerType>(Ty);
1015 Error(Loc, "global variable reference must have pointer type");
1019 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1021 // If this is a forward reference for the value, see if we already created a
1022 // forward ref record.
1024 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1025 I = ForwardRefValIDs.find(ID);
1026 if (I != ForwardRefValIDs.end())
1027 Val = I->second.first;
1030 // If we have the value in the symbol table or fwd-ref table, return it.
1032 if (Val->getType() == Ty) return Val;
1033 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1034 getTypeString(Val->getType()) + "'");
1038 // Otherwise, create a new forward reference for this value and remember it.
1039 GlobalValue *FwdVal;
1040 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1041 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1043 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1044 GlobalValue::ExternalWeakLinkage, 0, "");
1046 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1051 //===----------------------------------------------------------------------===//
1053 //===----------------------------------------------------------------------===//
1055 /// ParseToken - If the current token has the specified kind, eat it and return
1056 /// success. Otherwise, emit the specified error and return failure.
1057 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1058 if (Lex.getKind() != T)
1059 return TokError(ErrMsg);
1064 /// ParseStringConstant
1065 /// ::= StringConstant
1066 bool LLParser::ParseStringConstant(std::string &Result) {
1067 if (Lex.getKind() != lltok::StringConstant)
1068 return TokError("expected string constant");
1069 Result = Lex.getStrVal();
1076 bool LLParser::ParseUInt32(unsigned &Val) {
1077 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1078 return TokError("expected integer");
1079 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1080 if (Val64 != unsigned(Val64))
1081 return TokError("expected 32-bit integer (too large)");
1088 /// := 'localdynamic'
1089 /// := 'initialexec'
1091 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1092 switch (Lex.getKind()) {
1094 return TokError("expected localdynamic, initialexec or localexec");
1095 case lltok::kw_localdynamic:
1096 TLM = GlobalVariable::LocalDynamicTLSModel;
1098 case lltok::kw_initialexec:
1099 TLM = GlobalVariable::InitialExecTLSModel;
1101 case lltok::kw_localexec:
1102 TLM = GlobalVariable::LocalExecTLSModel;
1110 /// ParseOptionalThreadLocal
1112 /// := 'thread_local'
1113 /// := 'thread_local' '(' tlsmodel ')'
1114 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1115 TLM = GlobalVariable::NotThreadLocal;
1116 if (!EatIfPresent(lltok::kw_thread_local))
1119 TLM = GlobalVariable::GeneralDynamicTLSModel;
1120 if (Lex.getKind() == lltok::lparen) {
1122 return ParseTLSModel(TLM) ||
1123 ParseToken(lltok::rparen, "expected ')' after thread local model");
1128 /// ParseOptionalAddrSpace
1130 /// := 'addrspace' '(' uint32 ')'
1131 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1133 if (!EatIfPresent(lltok::kw_addrspace))
1135 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1136 ParseUInt32(AddrSpace) ||
1137 ParseToken(lltok::rparen, "expected ')' in address space");
1140 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1141 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1142 bool HaveError = false;
1147 lltok::Kind Token = Lex.getKind();
1149 default: // End of attributes.
1151 case lltok::kw_align: {
1153 if (ParseOptionalAlignment(Alignment))
1155 B.addAlignmentAttr(Alignment);
1158 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1159 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1160 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1161 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1162 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1163 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1164 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1165 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1166 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1167 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1168 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1170 case lltok::kw_alignstack:
1171 case lltok::kw_alwaysinline:
1172 case lltok::kw_builtin:
1173 case lltok::kw_inlinehint:
1174 case lltok::kw_minsize:
1175 case lltok::kw_naked:
1176 case lltok::kw_nobuiltin:
1177 case lltok::kw_noduplicate:
1178 case lltok::kw_noimplicitfloat:
1179 case lltok::kw_noinline:
1180 case lltok::kw_nonlazybind:
1181 case lltok::kw_noredzone:
1182 case lltok::kw_noreturn:
1183 case lltok::kw_nounwind:
1184 case lltok::kw_optnone:
1185 case lltok::kw_optsize:
1186 case lltok::kw_returns_twice:
1187 case lltok::kw_sanitize_address:
1188 case lltok::kw_sanitize_memory:
1189 case lltok::kw_sanitize_thread:
1191 case lltok::kw_sspreq:
1192 case lltok::kw_sspstrong:
1193 case lltok::kw_uwtable:
1194 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1202 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1203 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1204 bool HaveError = false;
1209 lltok::Kind Token = Lex.getKind();
1211 default: // End of attributes.
1213 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1214 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1215 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1216 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1219 case lltok::kw_align:
1220 case lltok::kw_byval:
1221 case lltok::kw_nest:
1222 case lltok::kw_nocapture:
1223 case lltok::kw_returned:
1224 case lltok::kw_sret:
1225 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1228 case lltok::kw_alignstack:
1229 case lltok::kw_alwaysinline:
1230 case lltok::kw_builtin:
1231 case lltok::kw_cold:
1232 case lltok::kw_inlinehint:
1233 case lltok::kw_minsize:
1234 case lltok::kw_naked:
1235 case lltok::kw_nobuiltin:
1236 case lltok::kw_noduplicate:
1237 case lltok::kw_noimplicitfloat:
1238 case lltok::kw_noinline:
1239 case lltok::kw_nonlazybind:
1240 case lltok::kw_noredzone:
1241 case lltok::kw_noreturn:
1242 case lltok::kw_nounwind:
1243 case lltok::kw_optnone:
1244 case lltok::kw_optsize:
1245 case lltok::kw_returns_twice:
1246 case lltok::kw_sanitize_address:
1247 case lltok::kw_sanitize_memory:
1248 case lltok::kw_sanitize_thread:
1250 case lltok::kw_sspreq:
1251 case lltok::kw_sspstrong:
1252 case lltok::kw_uwtable:
1253 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1256 case lltok::kw_readnone:
1257 case lltok::kw_readonly:
1258 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1265 /// ParseOptionalLinkage
1268 /// ::= 'linker_private'
1269 /// ::= 'linker_private_weak'
1274 /// ::= 'linkonce_odr'
1275 /// ::= 'linkonce_odr_auto_hide'
1276 /// ::= 'available_externally'
1281 /// ::= 'extern_weak'
1283 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1285 switch (Lex.getKind()) {
1286 default: Res=GlobalValue::ExternalLinkage; return false;
1287 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1288 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1289 case lltok::kw_linker_private_weak:
1290 Res = GlobalValue::LinkerPrivateWeakLinkage;
1292 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1293 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1294 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1295 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1296 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1297 case lltok::kw_linkonce_odr_auto_hide:
1298 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1299 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1301 case lltok::kw_available_externally:
1302 Res = GlobalValue::AvailableExternallyLinkage;
1304 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1305 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1306 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1307 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1308 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1309 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1316 /// ParseOptionalVisibility
1322 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1323 switch (Lex.getKind()) {
1324 default: Res = GlobalValue::DefaultVisibility; return false;
1325 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1326 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1327 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1333 /// ParseOptionalCallingConv
1337 /// ::= 'kw_intel_ocl_bicc'
1339 /// ::= 'x86_stdcallcc'
1340 /// ::= 'x86_fastcallcc'
1341 /// ::= 'x86_thiscallcc'
1342 /// ::= 'arm_apcscc'
1343 /// ::= 'arm_aapcscc'
1344 /// ::= 'arm_aapcs_vfpcc'
1345 /// ::= 'msp430_intrcc'
1346 /// ::= 'ptx_kernel'
1347 /// ::= 'ptx_device'
1349 /// ::= 'spir_kernel'
1350 /// ::= 'x86_64_sysvcc'
1351 /// ::= 'x86_64_win64cc'
1354 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1355 switch (Lex.getKind()) {
1356 default: CC = CallingConv::C; return false;
1357 case lltok::kw_ccc: CC = CallingConv::C; break;
1358 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1359 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1360 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1361 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1362 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1363 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1364 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1365 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1366 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1367 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1368 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1369 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1370 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1371 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1372 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1373 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1374 case lltok::kw_cc: {
1375 unsigned ArbitraryCC;
1377 if (ParseUInt32(ArbitraryCC))
1379 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1388 /// ParseInstructionMetadata
1389 /// ::= !dbg !42 (',' !dbg !57)*
1390 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1391 PerFunctionState *PFS) {
1393 if (Lex.getKind() != lltok::MetadataVar)
1394 return TokError("expected metadata after comma");
1396 std::string Name = Lex.getStrVal();
1397 unsigned MDK = M->getMDKindID(Name);
1401 SMLoc Loc = Lex.getLoc();
1403 if (ParseToken(lltok::exclaim, "expected '!' here"))
1406 // This code is similar to that of ParseMetadataValue, however it needs to
1407 // have special-case code for a forward reference; see the comments on
1408 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1409 // at the top level here.
1410 if (Lex.getKind() == lltok::lbrace) {
1412 if (ParseMetadataListValue(ID, PFS))
1414 assert(ID.Kind == ValID::t_MDNode);
1415 Inst->setMetadata(MDK, ID.MDNodeVal);
1417 unsigned NodeID = 0;
1418 if (ParseMDNodeID(Node, NodeID))
1421 // If we got the node, add it to the instruction.
1422 Inst->setMetadata(MDK, Node);
1424 MDRef R = { Loc, MDK, NodeID };
1425 // Otherwise, remember that this should be resolved later.
1426 ForwardRefInstMetadata[Inst].push_back(R);
1430 // If this is the end of the list, we're done.
1431 } while (EatIfPresent(lltok::comma));
1435 /// ParseOptionalAlignment
1438 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1440 if (!EatIfPresent(lltok::kw_align))
1442 LocTy AlignLoc = Lex.getLoc();
1443 if (ParseUInt32(Alignment)) return true;
1444 if (!isPowerOf2_32(Alignment))
1445 return Error(AlignLoc, "alignment is not a power of two");
1446 if (Alignment > Value::MaximumAlignment)
1447 return Error(AlignLoc, "huge alignments are not supported yet");
1451 /// ParseOptionalCommaAlign
1455 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1457 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1458 bool &AteExtraComma) {
1459 AteExtraComma = false;
1460 while (EatIfPresent(lltok::comma)) {
1461 // Metadata at the end is an early exit.
1462 if (Lex.getKind() == lltok::MetadataVar) {
1463 AteExtraComma = true;
1467 if (Lex.getKind() != lltok::kw_align)
1468 return Error(Lex.getLoc(), "expected metadata or 'align'");
1470 if (ParseOptionalAlignment(Alignment)) return true;
1476 /// ParseScopeAndOrdering
1477 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1480 /// This sets Scope and Ordering to the parsed values.
1481 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1482 AtomicOrdering &Ordering) {
1486 Scope = CrossThread;
1487 if (EatIfPresent(lltok::kw_singlethread))
1488 Scope = SingleThread;
1489 switch (Lex.getKind()) {
1490 default: return TokError("Expected ordering on atomic instruction");
1491 case lltok::kw_unordered: Ordering = Unordered; break;
1492 case lltok::kw_monotonic: Ordering = Monotonic; break;
1493 case lltok::kw_acquire: Ordering = Acquire; break;
1494 case lltok::kw_release: Ordering = Release; break;
1495 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1496 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1502 /// ParseOptionalStackAlignment
1504 /// ::= 'alignstack' '(' 4 ')'
1505 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1507 if (!EatIfPresent(lltok::kw_alignstack))
1509 LocTy ParenLoc = Lex.getLoc();
1510 if (!EatIfPresent(lltok::lparen))
1511 return Error(ParenLoc, "expected '('");
1512 LocTy AlignLoc = Lex.getLoc();
1513 if (ParseUInt32(Alignment)) return true;
1514 ParenLoc = Lex.getLoc();
1515 if (!EatIfPresent(lltok::rparen))
1516 return Error(ParenLoc, "expected ')'");
1517 if (!isPowerOf2_32(Alignment))
1518 return Error(AlignLoc, "stack alignment is not a power of two");
1522 /// ParseIndexList - This parses the index list for an insert/extractvalue
1523 /// instruction. This sets AteExtraComma in the case where we eat an extra
1524 /// comma at the end of the line and find that it is followed by metadata.
1525 /// Clients that don't allow metadata can call the version of this function that
1526 /// only takes one argument.
1529 /// ::= (',' uint32)+
1531 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1532 bool &AteExtraComma) {
1533 AteExtraComma = false;
1535 if (Lex.getKind() != lltok::comma)
1536 return TokError("expected ',' as start of index list");
1538 while (EatIfPresent(lltok::comma)) {
1539 if (Lex.getKind() == lltok::MetadataVar) {
1540 AteExtraComma = true;
1544 if (ParseUInt32(Idx)) return true;
1545 Indices.push_back(Idx);
1551 //===----------------------------------------------------------------------===//
1553 //===----------------------------------------------------------------------===//
1555 /// ParseType - Parse a type.
1556 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1557 SMLoc TypeLoc = Lex.getLoc();
1558 switch (Lex.getKind()) {
1560 return TokError("expected type");
1562 // Type ::= 'float' | 'void' (etc)
1563 Result = Lex.getTyVal();
1567 // Type ::= StructType
1568 if (ParseAnonStructType(Result, false))
1571 case lltok::lsquare:
1572 // Type ::= '[' ... ']'
1573 Lex.Lex(); // eat the lsquare.
1574 if (ParseArrayVectorType(Result, false))
1577 case lltok::less: // Either vector or packed struct.
1578 // Type ::= '<' ... '>'
1580 if (Lex.getKind() == lltok::lbrace) {
1581 if (ParseAnonStructType(Result, true) ||
1582 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1584 } else if (ParseArrayVectorType(Result, true))
1587 case lltok::LocalVar: {
1589 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1591 // If the type hasn't been defined yet, create a forward definition and
1592 // remember where that forward def'n was seen (in case it never is defined).
1593 if (Entry.first == 0) {
1594 Entry.first = StructType::create(Context, Lex.getStrVal());
1595 Entry.second = Lex.getLoc();
1597 Result = Entry.first;
1602 case lltok::LocalVarID: {
1604 if (Lex.getUIntVal() >= NumberedTypes.size())
1605 NumberedTypes.resize(Lex.getUIntVal()+1);
1606 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1608 // If the type hasn't been defined yet, create a forward definition and
1609 // remember where that forward def'n was seen (in case it never is defined).
1610 if (Entry.first == 0) {
1611 Entry.first = StructType::create(Context);
1612 Entry.second = Lex.getLoc();
1614 Result = Entry.first;
1620 // Parse the type suffixes.
1622 switch (Lex.getKind()) {
1625 if (!AllowVoid && Result->isVoidTy())
1626 return Error(TypeLoc, "void type only allowed for function results");
1629 // Type ::= Type '*'
1631 if (Result->isLabelTy())
1632 return TokError("basic block pointers are invalid");
1633 if (Result->isVoidTy())
1634 return TokError("pointers to void are invalid - use i8* instead");
1635 if (!PointerType::isValidElementType(Result))
1636 return TokError("pointer to this type is invalid");
1637 Result = PointerType::getUnqual(Result);
1641 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1642 case lltok::kw_addrspace: {
1643 if (Result->isLabelTy())
1644 return TokError("basic block pointers are invalid");
1645 if (Result->isVoidTy())
1646 return TokError("pointers to void are invalid; use i8* instead");
1647 if (!PointerType::isValidElementType(Result))
1648 return TokError("pointer to this type is invalid");
1650 if (ParseOptionalAddrSpace(AddrSpace) ||
1651 ParseToken(lltok::star, "expected '*' in address space"))
1654 Result = PointerType::get(Result, AddrSpace);
1658 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1660 if (ParseFunctionType(Result))
1667 /// ParseParameterList
1669 /// ::= '(' Arg (',' Arg)* ')'
1671 /// ::= Type OptionalAttributes Value OptionalAttributes
1672 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1673 PerFunctionState &PFS) {
1674 if (ParseToken(lltok::lparen, "expected '(' in call"))
1677 unsigned AttrIndex = 1;
1678 while (Lex.getKind() != lltok::rparen) {
1679 // If this isn't the first argument, we need a comma.
1680 if (!ArgList.empty() &&
1681 ParseToken(lltok::comma, "expected ',' in argument list"))
1684 // Parse the argument.
1687 AttrBuilder ArgAttrs;
1689 if (ParseType(ArgTy, ArgLoc))
1692 // Otherwise, handle normal operands.
1693 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1695 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1700 Lex.Lex(); // Lex the ')'.
1706 /// ParseArgumentList - Parse the argument list for a function type or function
1708 /// ::= '(' ArgTypeListI ')'
1712 /// ::= ArgTypeList ',' '...'
1713 /// ::= ArgType (',' ArgType)*
1715 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1718 assert(Lex.getKind() == lltok::lparen);
1719 Lex.Lex(); // eat the (.
1721 if (Lex.getKind() == lltok::rparen) {
1723 } else if (Lex.getKind() == lltok::dotdotdot) {
1727 LocTy TypeLoc = Lex.getLoc();
1732 if (ParseType(ArgTy) ||
1733 ParseOptionalParamAttrs(Attrs)) return true;
1735 if (ArgTy->isVoidTy())
1736 return Error(TypeLoc, "argument can not have void type");
1738 if (Lex.getKind() == lltok::LocalVar) {
1739 Name = Lex.getStrVal();
1743 if (!FunctionType::isValidArgumentType(ArgTy))
1744 return Error(TypeLoc, "invalid type for function argument");
1746 unsigned AttrIndex = 1;
1747 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1748 AttributeSet::get(ArgTy->getContext(),
1749 AttrIndex++, Attrs), Name));
1751 while (EatIfPresent(lltok::comma)) {
1752 // Handle ... at end of arg list.
1753 if (EatIfPresent(lltok::dotdotdot)) {
1758 // Otherwise must be an argument type.
1759 TypeLoc = Lex.getLoc();
1760 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1762 if (ArgTy->isVoidTy())
1763 return Error(TypeLoc, "argument can not have void type");
1765 if (Lex.getKind() == lltok::LocalVar) {
1766 Name = Lex.getStrVal();
1772 if (!ArgTy->isFirstClassType())
1773 return Error(TypeLoc, "invalid type for function argument");
1775 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1776 AttributeSet::get(ArgTy->getContext(),
1777 AttrIndex++, Attrs),
1782 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1785 /// ParseFunctionType
1786 /// ::= Type ArgumentList OptionalAttrs
1787 bool LLParser::ParseFunctionType(Type *&Result) {
1788 assert(Lex.getKind() == lltok::lparen);
1790 if (!FunctionType::isValidReturnType(Result))
1791 return TokError("invalid function return type");
1793 SmallVector<ArgInfo, 8> ArgList;
1795 if (ParseArgumentList(ArgList, isVarArg))
1798 // Reject names on the arguments lists.
1799 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1800 if (!ArgList[i].Name.empty())
1801 return Error(ArgList[i].Loc, "argument name invalid in function type");
1802 if (ArgList[i].Attrs.hasAttributes(i + 1))
1803 return Error(ArgList[i].Loc,
1804 "argument attributes invalid in function type");
1807 SmallVector<Type*, 16> ArgListTy;
1808 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1809 ArgListTy.push_back(ArgList[i].Ty);
1811 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1815 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1817 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1818 SmallVector<Type*, 8> Elts;
1819 if (ParseStructBody(Elts)) return true;
1821 Result = StructType::get(Context, Elts, Packed);
1825 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1826 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1827 std::pair<Type*, LocTy> &Entry,
1829 // If the type was already defined, diagnose the redefinition.
1830 if (Entry.first && !Entry.second.isValid())
1831 return Error(TypeLoc, "redefinition of type");
1833 // If we have opaque, just return without filling in the definition for the
1834 // struct. This counts as a definition as far as the .ll file goes.
1835 if (EatIfPresent(lltok::kw_opaque)) {
1836 // This type is being defined, so clear the location to indicate this.
1837 Entry.second = SMLoc();
1839 // If this type number has never been uttered, create it.
1840 if (Entry.first == 0)
1841 Entry.first = StructType::create(Context, Name);
1842 ResultTy = Entry.first;
1846 // If the type starts with '<', then it is either a packed struct or a vector.
1847 bool isPacked = EatIfPresent(lltok::less);
1849 // If we don't have a struct, then we have a random type alias, which we
1850 // accept for compatibility with old files. These types are not allowed to be
1851 // forward referenced and not allowed to be recursive.
1852 if (Lex.getKind() != lltok::lbrace) {
1854 return Error(TypeLoc, "forward references to non-struct type");
1858 return ParseArrayVectorType(ResultTy, true);
1859 return ParseType(ResultTy);
1862 // This type is being defined, so clear the location to indicate this.
1863 Entry.second = SMLoc();
1865 // If this type number has never been uttered, create it.
1866 if (Entry.first == 0)
1867 Entry.first = StructType::create(Context, Name);
1869 StructType *STy = cast<StructType>(Entry.first);
1871 SmallVector<Type*, 8> Body;
1872 if (ParseStructBody(Body) ||
1873 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1876 STy->setBody(Body, isPacked);
1882 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1885 /// ::= '{' Type (',' Type)* '}'
1886 /// ::= '<' '{' '}' '>'
1887 /// ::= '<' '{' Type (',' Type)* '}' '>'
1888 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1889 assert(Lex.getKind() == lltok::lbrace);
1890 Lex.Lex(); // Consume the '{'
1892 // Handle the empty struct.
1893 if (EatIfPresent(lltok::rbrace))
1896 LocTy EltTyLoc = Lex.getLoc();
1898 if (ParseType(Ty)) return true;
1901 if (!StructType::isValidElementType(Ty))
1902 return Error(EltTyLoc, "invalid element type for struct");
1904 while (EatIfPresent(lltok::comma)) {
1905 EltTyLoc = Lex.getLoc();
1906 if (ParseType(Ty)) return true;
1908 if (!StructType::isValidElementType(Ty))
1909 return Error(EltTyLoc, "invalid element type for struct");
1914 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1917 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1918 /// token has already been consumed.
1920 /// ::= '[' APSINTVAL 'x' Types ']'
1921 /// ::= '<' APSINTVAL 'x' Types '>'
1922 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1923 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1924 Lex.getAPSIntVal().getBitWidth() > 64)
1925 return TokError("expected number in address space");
1927 LocTy SizeLoc = Lex.getLoc();
1928 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1931 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1934 LocTy TypeLoc = Lex.getLoc();
1936 if (ParseType(EltTy)) return true;
1938 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1939 "expected end of sequential type"))
1944 return Error(SizeLoc, "zero element vector is illegal");
1945 if ((unsigned)Size != Size)
1946 return Error(SizeLoc, "size too large for vector");
1947 if (!VectorType::isValidElementType(EltTy))
1948 return Error(TypeLoc, "invalid vector element type");
1949 Result = VectorType::get(EltTy, unsigned(Size));
1951 if (!ArrayType::isValidElementType(EltTy))
1952 return Error(TypeLoc, "invalid array element type");
1953 Result = ArrayType::get(EltTy, Size);
1958 //===----------------------------------------------------------------------===//
1959 // Function Semantic Analysis.
1960 //===----------------------------------------------------------------------===//
1962 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1964 : P(p), F(f), FunctionNumber(functionNumber) {
1966 // Insert unnamed arguments into the NumberedVals list.
1967 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1970 NumberedVals.push_back(AI);
1973 LLParser::PerFunctionState::~PerFunctionState() {
1974 // If there were any forward referenced non-basicblock values, delete them.
1975 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1976 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1977 if (!isa<BasicBlock>(I->second.first)) {
1978 I->second.first->replaceAllUsesWith(
1979 UndefValue::get(I->second.first->getType()));
1980 delete I->second.first;
1981 I->second.first = 0;
1984 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1985 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1986 if (!isa<BasicBlock>(I->second.first)) {
1987 I->second.first->replaceAllUsesWith(
1988 UndefValue::get(I->second.first->getType()));
1989 delete I->second.first;
1990 I->second.first = 0;
1994 bool LLParser::PerFunctionState::FinishFunction() {
1995 // Check to see if someone took the address of labels in this block.
1996 if (!P.ForwardRefBlockAddresses.empty()) {
1998 if (!F.getName().empty()) {
1999 FunctionID.Kind = ValID::t_GlobalName;
2000 FunctionID.StrVal = F.getName();
2002 FunctionID.Kind = ValID::t_GlobalID;
2003 FunctionID.UIntVal = FunctionNumber;
2006 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2007 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2008 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2009 // Resolve all these references.
2010 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2013 P.ForwardRefBlockAddresses.erase(FRBAI);
2017 if (!ForwardRefVals.empty())
2018 return P.Error(ForwardRefVals.begin()->second.second,
2019 "use of undefined value '%" + ForwardRefVals.begin()->first +
2021 if (!ForwardRefValIDs.empty())
2022 return P.Error(ForwardRefValIDs.begin()->second.second,
2023 "use of undefined value '%" +
2024 Twine(ForwardRefValIDs.begin()->first) + "'");
2029 /// GetVal - Get a value with the specified name or ID, creating a
2030 /// forward reference record if needed. This can return null if the value
2031 /// exists but does not have the right type.
2032 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2033 Type *Ty, LocTy Loc) {
2034 // Look this name up in the normal function symbol table.
2035 Value *Val = F.getValueSymbolTable().lookup(Name);
2037 // If this is a forward reference for the value, see if we already created a
2038 // forward ref record.
2040 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2041 I = ForwardRefVals.find(Name);
2042 if (I != ForwardRefVals.end())
2043 Val = I->second.first;
2046 // If we have the value in the symbol table or fwd-ref table, return it.
2048 if (Val->getType() == Ty) return Val;
2049 if (Ty->isLabelTy())
2050 P.Error(Loc, "'%" + Name + "' is not a basic block");
2052 P.Error(Loc, "'%" + Name + "' defined with type '" +
2053 getTypeString(Val->getType()) + "'");
2057 // Don't make placeholders with invalid type.
2058 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2059 P.Error(Loc, "invalid use of a non-first-class type");
2063 // Otherwise, create a new forward reference for this value and remember it.
2065 if (Ty->isLabelTy())
2066 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2068 FwdVal = new Argument(Ty, Name);
2070 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2074 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2076 // Look this name up in the normal function symbol table.
2077 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2079 // If this is a forward reference for the value, see if we already created a
2080 // forward ref record.
2082 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2083 I = ForwardRefValIDs.find(ID);
2084 if (I != ForwardRefValIDs.end())
2085 Val = I->second.first;
2088 // If we have the value in the symbol table or fwd-ref table, return it.
2090 if (Val->getType() == Ty) return Val;
2091 if (Ty->isLabelTy())
2092 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2094 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2095 getTypeString(Val->getType()) + "'");
2099 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2100 P.Error(Loc, "invalid use of a non-first-class type");
2104 // Otherwise, create a new forward reference for this value and remember it.
2106 if (Ty->isLabelTy())
2107 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2109 FwdVal = new Argument(Ty);
2111 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2115 /// SetInstName - After an instruction is parsed and inserted into its
2116 /// basic block, this installs its name.
2117 bool LLParser::PerFunctionState::SetInstName(int NameID,
2118 const std::string &NameStr,
2119 LocTy NameLoc, Instruction *Inst) {
2120 // If this instruction has void type, it cannot have a name or ID specified.
2121 if (Inst->getType()->isVoidTy()) {
2122 if (NameID != -1 || !NameStr.empty())
2123 return P.Error(NameLoc, "instructions returning void cannot have a name");
2127 // If this was a numbered instruction, verify that the instruction is the
2128 // expected value and resolve any forward references.
2129 if (NameStr.empty()) {
2130 // If neither a name nor an ID was specified, just use the next ID.
2132 NameID = NumberedVals.size();
2134 if (unsigned(NameID) != NumberedVals.size())
2135 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2136 Twine(NumberedVals.size()) + "'");
2138 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2139 ForwardRefValIDs.find(NameID);
2140 if (FI != ForwardRefValIDs.end()) {
2141 if (FI->second.first->getType() != Inst->getType())
2142 return P.Error(NameLoc, "instruction forward referenced with type '" +
2143 getTypeString(FI->second.first->getType()) + "'");
2144 FI->second.first->replaceAllUsesWith(Inst);
2145 delete FI->second.first;
2146 ForwardRefValIDs.erase(FI);
2149 NumberedVals.push_back(Inst);
2153 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2154 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2155 FI = ForwardRefVals.find(NameStr);
2156 if (FI != ForwardRefVals.end()) {
2157 if (FI->second.first->getType() != Inst->getType())
2158 return P.Error(NameLoc, "instruction forward referenced with type '" +
2159 getTypeString(FI->second.first->getType()) + "'");
2160 FI->second.first->replaceAllUsesWith(Inst);
2161 delete FI->second.first;
2162 ForwardRefVals.erase(FI);
2165 // Set the name on the instruction.
2166 Inst->setName(NameStr);
2168 if (Inst->getName() != NameStr)
2169 return P.Error(NameLoc, "multiple definition of local value named '" +
2174 /// GetBB - Get a basic block with the specified name or ID, creating a
2175 /// forward reference record if needed.
2176 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2178 return cast_or_null<BasicBlock>(GetVal(Name,
2179 Type::getLabelTy(F.getContext()), Loc));
2182 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2183 return cast_or_null<BasicBlock>(GetVal(ID,
2184 Type::getLabelTy(F.getContext()), Loc));
2187 /// DefineBB - Define the specified basic block, which is either named or
2188 /// unnamed. If there is an error, this returns null otherwise it returns
2189 /// the block being defined.
2190 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2194 BB = GetBB(NumberedVals.size(), Loc);
2196 BB = GetBB(Name, Loc);
2197 if (BB == 0) return 0; // Already diagnosed error.
2199 // Move the block to the end of the function. Forward ref'd blocks are
2200 // inserted wherever they happen to be referenced.
2201 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2203 // Remove the block from forward ref sets.
2205 ForwardRefValIDs.erase(NumberedVals.size());
2206 NumberedVals.push_back(BB);
2208 // BB forward references are already in the function symbol table.
2209 ForwardRefVals.erase(Name);
2215 //===----------------------------------------------------------------------===//
2217 //===----------------------------------------------------------------------===//
2219 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2220 /// type implied. For example, if we parse "4" we don't know what integer type
2221 /// it has. The value will later be combined with its type and checked for
2222 /// sanity. PFS is used to convert function-local operands of metadata (since
2223 /// metadata operands are not just parsed here but also converted to values).
2224 /// PFS can be null when we are not parsing metadata values inside a function.
2225 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2226 ID.Loc = Lex.getLoc();
2227 switch (Lex.getKind()) {
2228 default: return TokError("expected value token");
2229 case lltok::GlobalID: // @42
2230 ID.UIntVal = Lex.getUIntVal();
2231 ID.Kind = ValID::t_GlobalID;
2233 case lltok::GlobalVar: // @foo
2234 ID.StrVal = Lex.getStrVal();
2235 ID.Kind = ValID::t_GlobalName;
2237 case lltok::LocalVarID: // %42
2238 ID.UIntVal = Lex.getUIntVal();
2239 ID.Kind = ValID::t_LocalID;
2241 case lltok::LocalVar: // %foo
2242 ID.StrVal = Lex.getStrVal();
2243 ID.Kind = ValID::t_LocalName;
2245 case lltok::exclaim: // !42, !{...}, or !"foo"
2246 return ParseMetadataValue(ID, PFS);
2248 ID.APSIntVal = Lex.getAPSIntVal();
2249 ID.Kind = ValID::t_APSInt;
2251 case lltok::APFloat:
2252 ID.APFloatVal = Lex.getAPFloatVal();
2253 ID.Kind = ValID::t_APFloat;
2255 case lltok::kw_true:
2256 ID.ConstantVal = ConstantInt::getTrue(Context);
2257 ID.Kind = ValID::t_Constant;
2259 case lltok::kw_false:
2260 ID.ConstantVal = ConstantInt::getFalse(Context);
2261 ID.Kind = ValID::t_Constant;
2263 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2264 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2265 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2267 case lltok::lbrace: {
2268 // ValID ::= '{' ConstVector '}'
2270 SmallVector<Constant*, 16> Elts;
2271 if (ParseGlobalValueVector(Elts) ||
2272 ParseToken(lltok::rbrace, "expected end of struct constant"))
2275 ID.ConstantStructElts = new Constant*[Elts.size()];
2276 ID.UIntVal = Elts.size();
2277 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2278 ID.Kind = ValID::t_ConstantStruct;
2282 // ValID ::= '<' ConstVector '>' --> Vector.
2283 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2285 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2287 SmallVector<Constant*, 16> Elts;
2288 LocTy FirstEltLoc = Lex.getLoc();
2289 if (ParseGlobalValueVector(Elts) ||
2291 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2292 ParseToken(lltok::greater, "expected end of constant"))
2295 if (isPackedStruct) {
2296 ID.ConstantStructElts = new Constant*[Elts.size()];
2297 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2298 ID.UIntVal = Elts.size();
2299 ID.Kind = ValID::t_PackedConstantStruct;
2304 return Error(ID.Loc, "constant vector must not be empty");
2306 if (!Elts[0]->getType()->isIntegerTy() &&
2307 !Elts[0]->getType()->isFloatingPointTy() &&
2308 !Elts[0]->getType()->isPointerTy())
2309 return Error(FirstEltLoc,
2310 "vector elements must have integer, pointer or floating point type");
2312 // Verify that all the vector elements have the same type.
2313 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2314 if (Elts[i]->getType() != Elts[0]->getType())
2315 return Error(FirstEltLoc,
2316 "vector element #" + Twine(i) +
2317 " is not of type '" + getTypeString(Elts[0]->getType()));
2319 ID.ConstantVal = ConstantVector::get(Elts);
2320 ID.Kind = ValID::t_Constant;
2323 case lltok::lsquare: { // Array Constant
2325 SmallVector<Constant*, 16> Elts;
2326 LocTy FirstEltLoc = Lex.getLoc();
2327 if (ParseGlobalValueVector(Elts) ||
2328 ParseToken(lltok::rsquare, "expected end of array constant"))
2331 // Handle empty element.
2333 // Use undef instead of an array because it's inconvenient to determine
2334 // the element type at this point, there being no elements to examine.
2335 ID.Kind = ValID::t_EmptyArray;
2339 if (!Elts[0]->getType()->isFirstClassType())
2340 return Error(FirstEltLoc, "invalid array element type: " +
2341 getTypeString(Elts[0]->getType()));
2343 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2345 // Verify all elements are correct type!
2346 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2347 if (Elts[i]->getType() != Elts[0]->getType())
2348 return Error(FirstEltLoc,
2349 "array element #" + Twine(i) +
2350 " is not of type '" + getTypeString(Elts[0]->getType()));
2353 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2354 ID.Kind = ValID::t_Constant;
2357 case lltok::kw_c: // c "foo"
2359 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2361 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2362 ID.Kind = ValID::t_Constant;
2365 case lltok::kw_asm: {
2366 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2368 bool HasSideEffect, AlignStack, AsmDialect;
2370 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2371 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2372 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2373 ParseStringConstant(ID.StrVal) ||
2374 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2375 ParseToken(lltok::StringConstant, "expected constraint string"))
2377 ID.StrVal2 = Lex.getStrVal();
2378 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2379 (unsigned(AsmDialect)<<2);
2380 ID.Kind = ValID::t_InlineAsm;
2384 case lltok::kw_blockaddress: {
2385 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2389 LocTy FnLoc, LabelLoc;
2391 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2393 ParseToken(lltok::comma, "expected comma in block address expression")||
2394 ParseValID(Label) ||
2395 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2398 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2399 return Error(Fn.Loc, "expected function name in blockaddress");
2400 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2401 return Error(Label.Loc, "expected basic block name in blockaddress");
2403 // Make a global variable as a placeholder for this reference.
2404 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2405 false, GlobalValue::InternalLinkage,
2407 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2408 ID.ConstantVal = FwdRef;
2409 ID.Kind = ValID::t_Constant;
2413 case lltok::kw_trunc:
2414 case lltok::kw_zext:
2415 case lltok::kw_sext:
2416 case lltok::kw_fptrunc:
2417 case lltok::kw_fpext:
2418 case lltok::kw_bitcast:
2419 case lltok::kw_uitofp:
2420 case lltok::kw_sitofp:
2421 case lltok::kw_fptoui:
2422 case lltok::kw_fptosi:
2423 case lltok::kw_inttoptr:
2424 case lltok::kw_ptrtoint: {
2425 unsigned Opc = Lex.getUIntVal();
2429 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2430 ParseGlobalTypeAndValue(SrcVal) ||
2431 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2432 ParseType(DestTy) ||
2433 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2435 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2436 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2437 getTypeString(SrcVal->getType()) + "' to '" +
2438 getTypeString(DestTy) + "'");
2439 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2441 ID.Kind = ValID::t_Constant;
2444 case lltok::kw_extractvalue: {
2447 SmallVector<unsigned, 4> Indices;
2448 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2449 ParseGlobalTypeAndValue(Val) ||
2450 ParseIndexList(Indices) ||
2451 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2454 if (!Val->getType()->isAggregateType())
2455 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2456 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2457 return Error(ID.Loc, "invalid indices for extractvalue");
2458 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2459 ID.Kind = ValID::t_Constant;
2462 case lltok::kw_insertvalue: {
2464 Constant *Val0, *Val1;
2465 SmallVector<unsigned, 4> Indices;
2466 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2467 ParseGlobalTypeAndValue(Val0) ||
2468 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2469 ParseGlobalTypeAndValue(Val1) ||
2470 ParseIndexList(Indices) ||
2471 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2473 if (!Val0->getType()->isAggregateType())
2474 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2475 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2476 return Error(ID.Loc, "invalid indices for insertvalue");
2477 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2478 ID.Kind = ValID::t_Constant;
2481 case lltok::kw_icmp:
2482 case lltok::kw_fcmp: {
2483 unsigned PredVal, Opc = Lex.getUIntVal();
2484 Constant *Val0, *Val1;
2486 if (ParseCmpPredicate(PredVal, Opc) ||
2487 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2488 ParseGlobalTypeAndValue(Val0) ||
2489 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2490 ParseGlobalTypeAndValue(Val1) ||
2491 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2494 if (Val0->getType() != Val1->getType())
2495 return Error(ID.Loc, "compare operands must have the same type");
2497 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2499 if (Opc == Instruction::FCmp) {
2500 if (!Val0->getType()->isFPOrFPVectorTy())
2501 return Error(ID.Loc, "fcmp requires floating point operands");
2502 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2504 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2505 if (!Val0->getType()->isIntOrIntVectorTy() &&
2506 !Val0->getType()->getScalarType()->isPointerTy())
2507 return Error(ID.Loc, "icmp requires pointer or integer operands");
2508 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2510 ID.Kind = ValID::t_Constant;
2514 // Binary Operators.
2516 case lltok::kw_fadd:
2518 case lltok::kw_fsub:
2520 case lltok::kw_fmul:
2521 case lltok::kw_udiv:
2522 case lltok::kw_sdiv:
2523 case lltok::kw_fdiv:
2524 case lltok::kw_urem:
2525 case lltok::kw_srem:
2526 case lltok::kw_frem:
2528 case lltok::kw_lshr:
2529 case lltok::kw_ashr: {
2533 unsigned Opc = Lex.getUIntVal();
2534 Constant *Val0, *Val1;
2536 LocTy ModifierLoc = Lex.getLoc();
2537 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2538 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2539 if (EatIfPresent(lltok::kw_nuw))
2541 if (EatIfPresent(lltok::kw_nsw)) {
2543 if (EatIfPresent(lltok::kw_nuw))
2546 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2547 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2548 if (EatIfPresent(lltok::kw_exact))
2551 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2552 ParseGlobalTypeAndValue(Val0) ||
2553 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2554 ParseGlobalTypeAndValue(Val1) ||
2555 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2557 if (Val0->getType() != Val1->getType())
2558 return Error(ID.Loc, "operands of constexpr must have same type");
2559 if (!Val0->getType()->isIntOrIntVectorTy()) {
2561 return Error(ModifierLoc, "nuw only applies to integer operations");
2563 return Error(ModifierLoc, "nsw only applies to integer operations");
2565 // Check that the type is valid for the operator.
2567 case Instruction::Add:
2568 case Instruction::Sub:
2569 case Instruction::Mul:
2570 case Instruction::UDiv:
2571 case Instruction::SDiv:
2572 case Instruction::URem:
2573 case Instruction::SRem:
2574 case Instruction::Shl:
2575 case Instruction::AShr:
2576 case Instruction::LShr:
2577 if (!Val0->getType()->isIntOrIntVectorTy())
2578 return Error(ID.Loc, "constexpr requires integer operands");
2580 case Instruction::FAdd:
2581 case Instruction::FSub:
2582 case Instruction::FMul:
2583 case Instruction::FDiv:
2584 case Instruction::FRem:
2585 if (!Val0->getType()->isFPOrFPVectorTy())
2586 return Error(ID.Loc, "constexpr requires fp operands");
2588 default: llvm_unreachable("Unknown binary operator!");
2591 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2592 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2593 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2594 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2596 ID.Kind = ValID::t_Constant;
2600 // Logical Operations
2603 case lltok::kw_xor: {
2604 unsigned Opc = Lex.getUIntVal();
2605 Constant *Val0, *Val1;
2607 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2608 ParseGlobalTypeAndValue(Val0) ||
2609 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2610 ParseGlobalTypeAndValue(Val1) ||
2611 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2613 if (Val0->getType() != Val1->getType())
2614 return Error(ID.Loc, "operands of constexpr must have same type");
2615 if (!Val0->getType()->isIntOrIntVectorTy())
2616 return Error(ID.Loc,
2617 "constexpr requires integer or integer vector operands");
2618 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2619 ID.Kind = ValID::t_Constant;
2623 case lltok::kw_getelementptr:
2624 case lltok::kw_shufflevector:
2625 case lltok::kw_insertelement:
2626 case lltok::kw_extractelement:
2627 case lltok::kw_select: {
2628 unsigned Opc = Lex.getUIntVal();
2629 SmallVector<Constant*, 16> Elts;
2630 bool InBounds = false;
2632 if (Opc == Instruction::GetElementPtr)
2633 InBounds = EatIfPresent(lltok::kw_inbounds);
2634 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2635 ParseGlobalValueVector(Elts) ||
2636 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2639 if (Opc == Instruction::GetElementPtr) {
2640 if (Elts.size() == 0 ||
2641 !Elts[0]->getType()->getScalarType()->isPointerTy())
2642 return Error(ID.Loc, "getelementptr requires pointer operand");
2644 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2645 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2646 return Error(ID.Loc, "invalid indices for getelementptr");
2647 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2649 } else if (Opc == Instruction::Select) {
2650 if (Elts.size() != 3)
2651 return Error(ID.Loc, "expected three operands to select");
2652 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2654 return Error(ID.Loc, Reason);
2655 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2656 } else if (Opc == Instruction::ShuffleVector) {
2657 if (Elts.size() != 3)
2658 return Error(ID.Loc, "expected three operands to shufflevector");
2659 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2660 return Error(ID.Loc, "invalid operands to shufflevector");
2662 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2663 } else if (Opc == Instruction::ExtractElement) {
2664 if (Elts.size() != 2)
2665 return Error(ID.Loc, "expected two operands to extractelement");
2666 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2667 return Error(ID.Loc, "invalid extractelement operands");
2668 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2670 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2671 if (Elts.size() != 3)
2672 return Error(ID.Loc, "expected three operands to insertelement");
2673 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2674 return Error(ID.Loc, "invalid insertelement operands");
2676 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2679 ID.Kind = ValID::t_Constant;
2688 /// ParseGlobalValue - Parse a global value with the specified type.
2689 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2693 bool Parsed = ParseValID(ID) ||
2694 ConvertValIDToValue(Ty, ID, V, NULL);
2695 if (V && !(C = dyn_cast<Constant>(V)))
2696 return Error(ID.Loc, "global values must be constants");
2700 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2702 return ParseType(Ty) ||
2703 ParseGlobalValue(Ty, V);
2706 /// ParseGlobalValueVector
2708 /// ::= TypeAndValue (',' TypeAndValue)*
2709 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2711 if (Lex.getKind() == lltok::rbrace ||
2712 Lex.getKind() == lltok::rsquare ||
2713 Lex.getKind() == lltok::greater ||
2714 Lex.getKind() == lltok::rparen)
2718 if (ParseGlobalTypeAndValue(C)) return true;
2721 while (EatIfPresent(lltok::comma)) {
2722 if (ParseGlobalTypeAndValue(C)) return true;
2729 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2730 assert(Lex.getKind() == lltok::lbrace);
2733 SmallVector<Value*, 16> Elts;
2734 if (ParseMDNodeVector(Elts, PFS) ||
2735 ParseToken(lltok::rbrace, "expected end of metadata node"))
2738 ID.MDNodeVal = MDNode::get(Context, Elts);
2739 ID.Kind = ValID::t_MDNode;
2743 /// ParseMetadataValue
2747 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2748 assert(Lex.getKind() == lltok::exclaim);
2753 if (Lex.getKind() == lltok::lbrace)
2754 return ParseMetadataListValue(ID, PFS);
2756 // Standalone metadata reference
2758 if (Lex.getKind() == lltok::APSInt) {
2759 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2760 ID.Kind = ValID::t_MDNode;
2765 // ::= '!' STRINGCONSTANT
2766 if (ParseMDString(ID.MDStringVal)) return true;
2767 ID.Kind = ValID::t_MDString;
2772 //===----------------------------------------------------------------------===//
2773 // Function Parsing.
2774 //===----------------------------------------------------------------------===//
2776 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2777 PerFunctionState *PFS) {
2778 if (Ty->isFunctionTy())
2779 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2782 case ValID::t_LocalID:
2783 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2784 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2786 case ValID::t_LocalName:
2787 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2788 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2790 case ValID::t_InlineAsm: {
2791 PointerType *PTy = dyn_cast<PointerType>(Ty);
2793 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2794 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2795 return Error(ID.Loc, "invalid type for inline asm constraint string");
2796 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2797 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2800 case ValID::t_MDNode:
2801 if (!Ty->isMetadataTy())
2802 return Error(ID.Loc, "metadata value must have metadata type");
2805 case ValID::t_MDString:
2806 if (!Ty->isMetadataTy())
2807 return Error(ID.Loc, "metadata value must have metadata type");
2810 case ValID::t_GlobalName:
2811 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2813 case ValID::t_GlobalID:
2814 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2816 case ValID::t_APSInt:
2817 if (!Ty->isIntegerTy())
2818 return Error(ID.Loc, "integer constant must have integer type");
2819 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2820 V = ConstantInt::get(Context, ID.APSIntVal);
2822 case ValID::t_APFloat:
2823 if (!Ty->isFloatingPointTy() ||
2824 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2825 return Error(ID.Loc, "floating point constant invalid for type");
2827 // The lexer has no type info, so builds all half, float, and double FP
2828 // constants as double. Fix this here. Long double does not need this.
2829 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2832 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2834 else if (Ty->isFloatTy())
2835 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2838 V = ConstantFP::get(Context, ID.APFloatVal);
2840 if (V->getType() != Ty)
2841 return Error(ID.Loc, "floating point constant does not have type '" +
2842 getTypeString(Ty) + "'");
2846 if (!Ty->isPointerTy())
2847 return Error(ID.Loc, "null must be a pointer type");
2848 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2850 case ValID::t_Undef:
2851 // FIXME: LabelTy should not be a first-class type.
2852 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2853 return Error(ID.Loc, "invalid type for undef constant");
2854 V = UndefValue::get(Ty);
2856 case ValID::t_EmptyArray:
2857 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2858 return Error(ID.Loc, "invalid empty array initializer");
2859 V = UndefValue::get(Ty);
2862 // FIXME: LabelTy should not be a first-class type.
2863 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2864 return Error(ID.Loc, "invalid type for null constant");
2865 V = Constant::getNullValue(Ty);
2867 case ValID::t_Constant:
2868 if (ID.ConstantVal->getType() != Ty)
2869 return Error(ID.Loc, "constant expression type mismatch");
2873 case ValID::t_ConstantStruct:
2874 case ValID::t_PackedConstantStruct:
2875 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2876 if (ST->getNumElements() != ID.UIntVal)
2877 return Error(ID.Loc,
2878 "initializer with struct type has wrong # elements");
2879 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2880 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2882 // Verify that the elements are compatible with the structtype.
2883 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2884 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2885 return Error(ID.Loc, "element " + Twine(i) +
2886 " of struct initializer doesn't match struct element type");
2888 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2891 return Error(ID.Loc, "constant expression type mismatch");
2894 llvm_unreachable("Invalid ValID");
2897 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2900 return ParseValID(ID, PFS) ||
2901 ConvertValIDToValue(Ty, ID, V, PFS);
2904 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2906 return ParseType(Ty) ||
2907 ParseValue(Ty, V, PFS);
2910 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2911 PerFunctionState &PFS) {
2914 if (ParseTypeAndValue(V, PFS)) return true;
2915 if (!isa<BasicBlock>(V))
2916 return Error(Loc, "expected a basic block");
2917 BB = cast<BasicBlock>(V);
2923 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2924 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2925 /// OptionalAlign OptGC
2926 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2927 // Parse the linkage.
2928 LocTy LinkageLoc = Lex.getLoc();
2931 unsigned Visibility;
2932 AttrBuilder RetAttrs;
2935 LocTy RetTypeLoc = Lex.getLoc();
2936 if (ParseOptionalLinkage(Linkage) ||
2937 ParseOptionalVisibility(Visibility) ||
2938 ParseOptionalCallingConv(CC) ||
2939 ParseOptionalReturnAttrs(RetAttrs) ||
2940 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2943 // Verify that the linkage is ok.
2944 switch ((GlobalValue::LinkageTypes)Linkage) {
2945 case GlobalValue::ExternalLinkage:
2946 break; // always ok.
2947 case GlobalValue::DLLImportLinkage:
2948 case GlobalValue::ExternalWeakLinkage:
2950 return Error(LinkageLoc, "invalid linkage for function definition");
2952 case GlobalValue::PrivateLinkage:
2953 case GlobalValue::LinkerPrivateLinkage:
2954 case GlobalValue::LinkerPrivateWeakLinkage:
2955 case GlobalValue::InternalLinkage:
2956 case GlobalValue::AvailableExternallyLinkage:
2957 case GlobalValue::LinkOnceAnyLinkage:
2958 case GlobalValue::LinkOnceODRLinkage:
2959 case GlobalValue::LinkOnceODRAutoHideLinkage:
2960 case GlobalValue::WeakAnyLinkage:
2961 case GlobalValue::WeakODRLinkage:
2962 case GlobalValue::DLLExportLinkage:
2964 return Error(LinkageLoc, "invalid linkage for function declaration");
2966 case GlobalValue::AppendingLinkage:
2967 case GlobalValue::CommonLinkage:
2968 return Error(LinkageLoc, "invalid function linkage type");
2971 if (!FunctionType::isValidReturnType(RetType))
2972 return Error(RetTypeLoc, "invalid function return type");
2974 LocTy NameLoc = Lex.getLoc();
2976 std::string FunctionName;
2977 if (Lex.getKind() == lltok::GlobalVar) {
2978 FunctionName = Lex.getStrVal();
2979 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2980 unsigned NameID = Lex.getUIntVal();
2982 if (NameID != NumberedVals.size())
2983 return TokError("function expected to be numbered '%" +
2984 Twine(NumberedVals.size()) + "'");
2986 return TokError("expected function name");
2991 if (Lex.getKind() != lltok::lparen)
2992 return TokError("expected '(' in function argument list");
2994 SmallVector<ArgInfo, 8> ArgList;
2996 AttrBuilder FuncAttrs;
2997 std::vector<unsigned> FwdRefAttrGrps;
2999 std::string Section;
3003 LocTy UnnamedAddrLoc;
3005 if (ParseArgumentList(ArgList, isVarArg) ||
3006 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3008 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3010 (EatIfPresent(lltok::kw_section) &&
3011 ParseStringConstant(Section)) ||
3012 ParseOptionalAlignment(Alignment) ||
3013 (EatIfPresent(lltok::kw_gc) &&
3014 ParseStringConstant(GC)))
3017 if (FuncAttrs.contains(Attribute::Builtin))
3018 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3020 // If the alignment was parsed as an attribute, move to the alignment field.
3021 if (FuncAttrs.hasAlignmentAttr()) {
3022 Alignment = FuncAttrs.getAlignment();
3023 FuncAttrs.removeAttribute(Attribute::Alignment);
3026 // Okay, if we got here, the function is syntactically valid. Convert types
3027 // and do semantic checks.
3028 std::vector<Type*> ParamTypeList;
3029 SmallVector<AttributeSet, 8> Attrs;
3031 if (RetAttrs.hasAttributes())
3032 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3033 AttributeSet::ReturnIndex,
3036 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3037 ParamTypeList.push_back(ArgList[i].Ty);
3038 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3039 AttrBuilder B(ArgList[i].Attrs, i + 1);
3040 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3044 if (FuncAttrs.hasAttributes())
3045 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3046 AttributeSet::FunctionIndex,
3049 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3051 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3052 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3055 FunctionType::get(RetType, ParamTypeList, isVarArg);
3056 PointerType *PFT = PointerType::getUnqual(FT);
3059 if (!FunctionName.empty()) {
3060 // If this was a definition of a forward reference, remove the definition
3061 // from the forward reference table and fill in the forward ref.
3062 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3063 ForwardRefVals.find(FunctionName);
3064 if (FRVI != ForwardRefVals.end()) {
3065 Fn = M->getFunction(FunctionName);
3067 return Error(FRVI->second.second, "invalid forward reference to "
3068 "function as global value!");
3069 if (Fn->getType() != PFT)
3070 return Error(FRVI->second.second, "invalid forward reference to "
3071 "function '" + FunctionName + "' with wrong type!");
3073 ForwardRefVals.erase(FRVI);
3074 } else if ((Fn = M->getFunction(FunctionName))) {
3075 // Reject redefinitions.
3076 return Error(NameLoc, "invalid redefinition of function '" +
3077 FunctionName + "'");
3078 } else if (M->getNamedValue(FunctionName)) {
3079 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3083 // If this is a definition of a forward referenced function, make sure the
3085 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3086 = ForwardRefValIDs.find(NumberedVals.size());
3087 if (I != ForwardRefValIDs.end()) {
3088 Fn = cast<Function>(I->second.first);
3089 if (Fn->getType() != PFT)
3090 return Error(NameLoc, "type of definition and forward reference of '@" +
3091 Twine(NumberedVals.size()) + "' disagree");
3092 ForwardRefValIDs.erase(I);
3097 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3098 else // Move the forward-reference to the correct spot in the module.
3099 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3101 if (FunctionName.empty())
3102 NumberedVals.push_back(Fn);
3104 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3105 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3106 Fn->setCallingConv(CC);
3107 Fn->setAttributes(PAL);
3108 Fn->setUnnamedAddr(UnnamedAddr);
3109 Fn->setAlignment(Alignment);
3110 Fn->setSection(Section);
3111 if (!GC.empty()) Fn->setGC(GC.c_str());
3112 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3114 // Add all of the arguments we parsed to the function.
3115 Function::arg_iterator ArgIt = Fn->arg_begin();
3116 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3117 // If the argument has a name, insert it into the argument symbol table.
3118 if (ArgList[i].Name.empty()) continue;
3120 // Set the name, if it conflicted, it will be auto-renamed.
3121 ArgIt->setName(ArgList[i].Name);
3123 if (ArgIt->getName() != ArgList[i].Name)
3124 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3125 ArgList[i].Name + "'");
3132 /// ParseFunctionBody
3133 /// ::= '{' BasicBlock+ '}'
3135 bool LLParser::ParseFunctionBody(Function &Fn) {
3136 if (Lex.getKind() != lltok::lbrace)
3137 return TokError("expected '{' in function body");
3138 Lex.Lex(); // eat the {.
3140 int FunctionNumber = -1;
3141 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3143 PerFunctionState PFS(*this, Fn, FunctionNumber);
3145 // We need at least one basic block.
3146 if (Lex.getKind() == lltok::rbrace)
3147 return TokError("function body requires at least one basic block");
3149 while (Lex.getKind() != lltok::rbrace)
3150 if (ParseBasicBlock(PFS)) return true;
3155 // Verify function is ok.
3156 return PFS.FinishFunction();
3160 /// ::= LabelStr? Instruction*
3161 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3162 // If this basic block starts out with a name, remember it.
3164 LocTy NameLoc = Lex.getLoc();
3165 if (Lex.getKind() == lltok::LabelStr) {
3166 Name = Lex.getStrVal();
3170 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3171 if (BB == 0) return true;
3173 std::string NameStr;
3175 // Parse the instructions in this block until we get a terminator.
3177 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3179 // This instruction may have three possibilities for a name: a) none
3180 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3181 LocTy NameLoc = Lex.getLoc();
3185 if (Lex.getKind() == lltok::LocalVarID) {
3186 NameID = Lex.getUIntVal();
3188 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3190 } else if (Lex.getKind() == lltok::LocalVar) {
3191 NameStr = Lex.getStrVal();
3193 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3197 switch (ParseInstruction(Inst, BB, PFS)) {
3198 default: llvm_unreachable("Unknown ParseInstruction result!");
3199 case InstError: return true;
3201 BB->getInstList().push_back(Inst);
3203 // With a normal result, we check to see if the instruction is followed by
3204 // a comma and metadata.
3205 if (EatIfPresent(lltok::comma))
3206 if (ParseInstructionMetadata(Inst, &PFS))
3209 case InstExtraComma:
3210 BB->getInstList().push_back(Inst);
3212 // If the instruction parser ate an extra comma at the end of it, it
3213 // *must* be followed by metadata.
3214 if (ParseInstructionMetadata(Inst, &PFS))
3219 // Set the name on the instruction.
3220 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3221 } while (!isa<TerminatorInst>(Inst));
3226 //===----------------------------------------------------------------------===//
3227 // Instruction Parsing.
3228 //===----------------------------------------------------------------------===//
3230 /// ParseInstruction - Parse one of the many different instructions.
3232 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3233 PerFunctionState &PFS) {
3234 lltok::Kind Token = Lex.getKind();
3235 if (Token == lltok::Eof)
3236 return TokError("found end of file when expecting more instructions");
3237 LocTy Loc = Lex.getLoc();
3238 unsigned KeywordVal = Lex.getUIntVal();
3239 Lex.Lex(); // Eat the keyword.
3242 default: return Error(Loc, "expected instruction opcode");
3243 // Terminator Instructions.
3244 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3245 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3246 case lltok::kw_br: return ParseBr(Inst, PFS);
3247 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3248 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3249 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3250 case lltok::kw_resume: return ParseResume(Inst, PFS);
3251 // Binary Operators.
3255 case lltok::kw_shl: {
3256 bool NUW = EatIfPresent(lltok::kw_nuw);
3257 bool NSW = EatIfPresent(lltok::kw_nsw);
3258 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3260 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3262 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3263 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3266 case lltok::kw_fadd:
3267 case lltok::kw_fsub:
3268 case lltok::kw_fmul:
3269 case lltok::kw_fdiv:
3270 case lltok::kw_frem: {
3271 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3272 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3276 Inst->setFastMathFlags(FMF);
3280 case lltok::kw_sdiv:
3281 case lltok::kw_udiv:
3282 case lltok::kw_lshr:
3283 case lltok::kw_ashr: {
3284 bool Exact = EatIfPresent(lltok::kw_exact);
3286 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3287 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3291 case lltok::kw_urem:
3292 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3295 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3296 case lltok::kw_icmp:
3297 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3299 case lltok::kw_trunc:
3300 case lltok::kw_zext:
3301 case lltok::kw_sext:
3302 case lltok::kw_fptrunc:
3303 case lltok::kw_fpext:
3304 case lltok::kw_bitcast:
3305 case lltok::kw_uitofp:
3306 case lltok::kw_sitofp:
3307 case lltok::kw_fptoui:
3308 case lltok::kw_fptosi:
3309 case lltok::kw_inttoptr:
3310 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3312 case lltok::kw_select: return ParseSelect(Inst, PFS);
3313 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3314 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3315 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3316 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3317 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3318 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3319 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3320 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3322 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3323 case lltok::kw_load: return ParseLoad(Inst, PFS);
3324 case lltok::kw_store: return ParseStore(Inst, PFS);
3325 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3326 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3327 case lltok::kw_fence: return ParseFence(Inst, PFS);
3328 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3329 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3330 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3334 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3335 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3336 if (Opc == Instruction::FCmp) {
3337 switch (Lex.getKind()) {
3338 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3339 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3340 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3341 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3342 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3343 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3344 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3345 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3346 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3347 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3348 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3349 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3350 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3351 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3352 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3353 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3354 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3357 switch (Lex.getKind()) {
3358 default: return TokError("expected icmp predicate (e.g. 'eq')");
3359 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3360 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3361 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3362 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3363 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3364 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3365 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3366 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3367 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3368 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3375 //===----------------------------------------------------------------------===//
3376 // Terminator Instructions.
3377 //===----------------------------------------------------------------------===//
3379 /// ParseRet - Parse a return instruction.
3380 /// ::= 'ret' void (',' !dbg, !1)*
3381 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3382 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3383 PerFunctionState &PFS) {
3384 SMLoc TypeLoc = Lex.getLoc();
3386 if (ParseType(Ty, true /*void allowed*/)) return true;
3388 Type *ResType = PFS.getFunction().getReturnType();
3390 if (Ty->isVoidTy()) {
3391 if (!ResType->isVoidTy())
3392 return Error(TypeLoc, "value doesn't match function result type '" +
3393 getTypeString(ResType) + "'");
3395 Inst = ReturnInst::Create(Context);
3400 if (ParseValue(Ty, RV, PFS)) return true;
3402 if (ResType != RV->getType())
3403 return Error(TypeLoc, "value doesn't match function result type '" +
3404 getTypeString(ResType) + "'");
3406 Inst = ReturnInst::Create(Context, RV);
3412 /// ::= 'br' TypeAndValue
3413 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3414 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3417 BasicBlock *Op1, *Op2;
3418 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3420 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3421 Inst = BranchInst::Create(BB);
3425 if (Op0->getType() != Type::getInt1Ty(Context))
3426 return Error(Loc, "branch condition must have 'i1' type");
3428 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3429 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3430 ParseToken(lltok::comma, "expected ',' after true destination") ||
3431 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3434 Inst = BranchInst::Create(Op1, Op2, Op0);
3440 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3442 /// ::= (TypeAndValue ',' TypeAndValue)*
3443 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3444 LocTy CondLoc, BBLoc;
3446 BasicBlock *DefaultBB;
3447 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3448 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3449 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3450 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3453 if (!Cond->getType()->isIntegerTy())
3454 return Error(CondLoc, "switch condition must have integer type");
3456 // Parse the jump table pairs.
3457 SmallPtrSet<Value*, 32> SeenCases;
3458 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3459 while (Lex.getKind() != lltok::rsquare) {
3463 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3464 ParseToken(lltok::comma, "expected ',' after case value") ||
3465 ParseTypeAndBasicBlock(DestBB, PFS))
3468 if (!SeenCases.insert(Constant))
3469 return Error(CondLoc, "duplicate case value in switch");
3470 if (!isa<ConstantInt>(Constant))
3471 return Error(CondLoc, "case value is not a constant integer");
3473 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3476 Lex.Lex(); // Eat the ']'.
3478 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3479 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3480 SI->addCase(Table[i].first, Table[i].second);
3487 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3488 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3491 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3492 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3493 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3496 if (!Address->getType()->isPointerTy())
3497 return Error(AddrLoc, "indirectbr address must have pointer type");
3499 // Parse the destination list.
3500 SmallVector<BasicBlock*, 16> DestList;
3502 if (Lex.getKind() != lltok::rsquare) {
3504 if (ParseTypeAndBasicBlock(DestBB, PFS))
3506 DestList.push_back(DestBB);
3508 while (EatIfPresent(lltok::comma)) {
3509 if (ParseTypeAndBasicBlock(DestBB, PFS))
3511 DestList.push_back(DestBB);
3515 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3518 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3519 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3520 IBI->addDestination(DestList[i]);
3527 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3528 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3529 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3530 LocTy CallLoc = Lex.getLoc();
3531 AttrBuilder RetAttrs, FnAttrs;
3532 std::vector<unsigned> FwdRefAttrGrps;
3538 SmallVector<ParamInfo, 16> ArgList;
3540 BasicBlock *NormalBB, *UnwindBB;
3541 if (ParseOptionalCallingConv(CC) ||
3542 ParseOptionalReturnAttrs(RetAttrs) ||
3543 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3544 ParseValID(CalleeID) ||
3545 ParseParameterList(ArgList, PFS) ||
3546 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3548 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3549 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3550 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3551 ParseTypeAndBasicBlock(UnwindBB, PFS))
3554 // If RetType is a non-function pointer type, then this is the short syntax
3555 // for the call, which means that RetType is just the return type. Infer the
3556 // rest of the function argument types from the arguments that are present.
3557 PointerType *PFTy = 0;
3558 FunctionType *Ty = 0;
3559 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3560 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3561 // Pull out the types of all of the arguments...
3562 std::vector<Type*> ParamTypes;
3563 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3564 ParamTypes.push_back(ArgList[i].V->getType());
3566 if (!FunctionType::isValidReturnType(RetType))
3567 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3569 Ty = FunctionType::get(RetType, ParamTypes, false);
3570 PFTy = PointerType::getUnqual(Ty);
3573 // Look up the callee.
3575 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3577 // Set up the Attribute for the function.
3578 SmallVector<AttributeSet, 8> Attrs;
3579 if (RetAttrs.hasAttributes())
3580 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3581 AttributeSet::ReturnIndex,
3584 SmallVector<Value*, 8> Args;
3586 // Loop through FunctionType's arguments and ensure they are specified
3587 // correctly. Also, gather any parameter attributes.
3588 FunctionType::param_iterator I = Ty->param_begin();
3589 FunctionType::param_iterator E = Ty->param_end();
3590 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3591 Type *ExpectedTy = 0;
3594 } else if (!Ty->isVarArg()) {
3595 return Error(ArgList[i].Loc, "too many arguments specified");
3598 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3599 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3600 getTypeString(ExpectedTy) + "'");
3601 Args.push_back(ArgList[i].V);
3602 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3603 AttrBuilder B(ArgList[i].Attrs, i + 1);
3604 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3609 return Error(CallLoc, "not enough parameters specified for call");
3611 if (FnAttrs.hasAttributes())
3612 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3613 AttributeSet::FunctionIndex,
3616 // Finish off the Attribute and check them
3617 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3619 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3620 II->setCallingConv(CC);
3621 II->setAttributes(PAL);
3622 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3628 /// ::= 'resume' TypeAndValue
3629 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3630 Value *Exn; LocTy ExnLoc;
3631 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3634 ResumeInst *RI = ResumeInst::Create(Exn);
3639 //===----------------------------------------------------------------------===//
3640 // Binary Operators.
3641 //===----------------------------------------------------------------------===//
3644 /// ::= ArithmeticOps TypeAndValue ',' Value
3646 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3647 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3648 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3649 unsigned Opc, unsigned OperandType) {
3650 LocTy Loc; Value *LHS, *RHS;
3651 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3652 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3653 ParseValue(LHS->getType(), RHS, PFS))
3657 switch (OperandType) {
3658 default: llvm_unreachable("Unknown operand type!");
3659 case 0: // int or FP.
3660 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3661 LHS->getType()->isFPOrFPVectorTy();
3663 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3664 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3668 return Error(Loc, "invalid operand type for instruction");
3670 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3675 /// ::= ArithmeticOps TypeAndValue ',' Value {
3676 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3678 LocTy Loc; Value *LHS, *RHS;
3679 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3680 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3681 ParseValue(LHS->getType(), RHS, PFS))
3684 if (!LHS->getType()->isIntOrIntVectorTy())
3685 return Error(Loc,"instruction requires integer or integer vector operands");
3687 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3693 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3694 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3695 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3697 // Parse the integer/fp comparison predicate.
3701 if (ParseCmpPredicate(Pred, Opc) ||
3702 ParseTypeAndValue(LHS, Loc, PFS) ||
3703 ParseToken(lltok::comma, "expected ',' after compare value") ||
3704 ParseValue(LHS->getType(), RHS, PFS))
3707 if (Opc == Instruction::FCmp) {
3708 if (!LHS->getType()->isFPOrFPVectorTy())
3709 return Error(Loc, "fcmp requires floating point operands");
3710 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3712 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3713 if (!LHS->getType()->isIntOrIntVectorTy() &&
3714 !LHS->getType()->getScalarType()->isPointerTy())
3715 return Error(Loc, "icmp requires integer operands");
3716 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3721 //===----------------------------------------------------------------------===//
3722 // Other Instructions.
3723 //===----------------------------------------------------------------------===//
3727 /// ::= CastOpc TypeAndValue 'to' Type
3728 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3733 if (ParseTypeAndValue(Op, Loc, PFS) ||
3734 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3738 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3739 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3740 return Error(Loc, "invalid cast opcode for cast from '" +
3741 getTypeString(Op->getType()) + "' to '" +
3742 getTypeString(DestTy) + "'");
3744 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3749 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3750 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3752 Value *Op0, *Op1, *Op2;
3753 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3754 ParseToken(lltok::comma, "expected ',' after select condition") ||
3755 ParseTypeAndValue(Op1, PFS) ||
3756 ParseToken(lltok::comma, "expected ',' after select value") ||
3757 ParseTypeAndValue(Op2, PFS))
3760 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3761 return Error(Loc, Reason);
3763 Inst = SelectInst::Create(Op0, Op1, Op2);
3768 /// ::= 'va_arg' TypeAndValue ',' Type
3769 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3773 if (ParseTypeAndValue(Op, PFS) ||
3774 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3775 ParseType(EltTy, TypeLoc))
3778 if (!EltTy->isFirstClassType())
3779 return Error(TypeLoc, "va_arg requires operand with first class type");
3781 Inst = new VAArgInst(Op, EltTy);
3785 /// ParseExtractElement
3786 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3787 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3790 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3791 ParseToken(lltok::comma, "expected ',' after extract value") ||
3792 ParseTypeAndValue(Op1, PFS))
3795 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3796 return Error(Loc, "invalid extractelement operands");
3798 Inst = ExtractElementInst::Create(Op0, Op1);
3802 /// ParseInsertElement
3803 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3804 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3806 Value *Op0, *Op1, *Op2;
3807 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3808 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3809 ParseTypeAndValue(Op1, PFS) ||
3810 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3811 ParseTypeAndValue(Op2, PFS))
3814 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3815 return Error(Loc, "invalid insertelement operands");
3817 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3821 /// ParseShuffleVector
3822 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3823 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3825 Value *Op0, *Op1, *Op2;
3826 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3827 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3828 ParseTypeAndValue(Op1, PFS) ||
3829 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3830 ParseTypeAndValue(Op2, PFS))
3833 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3834 return Error(Loc, "invalid shufflevector operands");
3836 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3841 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3842 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3843 Type *Ty = 0; LocTy TypeLoc;
3846 if (ParseType(Ty, TypeLoc) ||
3847 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3848 ParseValue(Ty, Op0, PFS) ||
3849 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3850 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3851 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3854 bool AteExtraComma = false;
3855 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3857 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3859 if (!EatIfPresent(lltok::comma))
3862 if (Lex.getKind() == lltok::MetadataVar) {
3863 AteExtraComma = true;
3867 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3868 ParseValue(Ty, Op0, PFS) ||
3869 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3870 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3871 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3875 if (!Ty->isFirstClassType())
3876 return Error(TypeLoc, "phi node must have first class type");
3878 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3879 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3880 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3882 return AteExtraComma ? InstExtraComma : InstNormal;
3886 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3888 /// ::= 'catch' TypeAndValue
3890 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3891 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3892 Type *Ty = 0; LocTy TyLoc;
3893 Value *PersFn; LocTy PersFnLoc;
3895 if (ParseType(Ty, TyLoc) ||
3896 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3897 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3900 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3901 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3903 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3904 LandingPadInst::ClauseType CT;
3905 if (EatIfPresent(lltok::kw_catch))
3906 CT = LandingPadInst::Catch;
3907 else if (EatIfPresent(lltok::kw_filter))
3908 CT = LandingPadInst::Filter;
3910 return TokError("expected 'catch' or 'filter' clause type");
3912 Value *V; LocTy VLoc;
3913 if (ParseTypeAndValue(V, VLoc, PFS)) {
3918 // A 'catch' type expects a non-array constant. A filter clause expects an
3920 if (CT == LandingPadInst::Catch) {
3921 if (isa<ArrayType>(V->getType()))
3922 Error(VLoc, "'catch' clause has an invalid type");
3924 if (!isa<ArrayType>(V->getType()))
3925 Error(VLoc, "'filter' clause has an invalid type");
3936 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3937 /// ParameterList OptionalAttrs
3938 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3940 AttrBuilder RetAttrs, FnAttrs;
3941 std::vector<unsigned> FwdRefAttrGrps;
3947 SmallVector<ParamInfo, 16> ArgList;
3948 LocTy CallLoc = Lex.getLoc();
3950 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3951 ParseOptionalCallingConv(CC) ||
3952 ParseOptionalReturnAttrs(RetAttrs) ||
3953 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3954 ParseValID(CalleeID) ||
3955 ParseParameterList(ArgList, PFS) ||
3956 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3960 // If RetType is a non-function pointer type, then this is the short syntax
3961 // for the call, which means that RetType is just the return type. Infer the
3962 // rest of the function argument types from the arguments that are present.
3963 PointerType *PFTy = 0;
3964 FunctionType *Ty = 0;
3965 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3966 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3967 // Pull out the types of all of the arguments...
3968 std::vector<Type*> ParamTypes;
3969 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3970 ParamTypes.push_back(ArgList[i].V->getType());
3972 if (!FunctionType::isValidReturnType(RetType))
3973 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3975 Ty = FunctionType::get(RetType, ParamTypes, false);
3976 PFTy = PointerType::getUnqual(Ty);
3979 // Look up the callee.
3981 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3983 // Set up the Attribute for the function.
3984 SmallVector<AttributeSet, 8> Attrs;
3985 if (RetAttrs.hasAttributes())
3986 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3987 AttributeSet::ReturnIndex,
3990 SmallVector<Value*, 8> Args;
3992 // Loop through FunctionType's arguments and ensure they are specified
3993 // correctly. Also, gather any parameter attributes.
3994 FunctionType::param_iterator I = Ty->param_begin();
3995 FunctionType::param_iterator E = Ty->param_end();
3996 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3997 Type *ExpectedTy = 0;
4000 } else if (!Ty->isVarArg()) {
4001 return Error(ArgList[i].Loc, "too many arguments specified");
4004 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4005 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4006 getTypeString(ExpectedTy) + "'");
4007 Args.push_back(ArgList[i].V);
4008 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4009 AttrBuilder B(ArgList[i].Attrs, i + 1);
4010 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4015 return Error(CallLoc, "not enough parameters specified for call");
4017 if (FnAttrs.hasAttributes())
4018 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4019 AttributeSet::FunctionIndex,
4022 // Finish off the Attribute and check them
4023 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4025 CallInst *CI = CallInst::Create(Callee, Args);
4026 CI->setTailCall(isTail);
4027 CI->setCallingConv(CC);
4028 CI->setAttributes(PAL);
4029 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4034 //===----------------------------------------------------------------------===//
4035 // Memory Instructions.
4036 //===----------------------------------------------------------------------===//
4039 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4040 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4043 unsigned Alignment = 0;
4045 if (ParseType(Ty)) return true;
4047 bool AteExtraComma = false;
4048 if (EatIfPresent(lltok::comma)) {
4049 if (Lex.getKind() == lltok::kw_align) {
4050 if (ParseOptionalAlignment(Alignment)) return true;
4051 } else if (Lex.getKind() == lltok::MetadataVar) {
4052 AteExtraComma = true;
4054 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4055 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4060 if (Size && !Size->getType()->isIntegerTy())
4061 return Error(SizeLoc, "element count must have integer type");
4063 Inst = new AllocaInst(Ty, Size, Alignment);
4064 return AteExtraComma ? InstExtraComma : InstNormal;
4068 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4069 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4070 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4071 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4072 Value *Val; LocTy Loc;
4073 unsigned Alignment = 0;
4074 bool AteExtraComma = false;
4075 bool isAtomic = false;
4076 AtomicOrdering Ordering = NotAtomic;
4077 SynchronizationScope Scope = CrossThread;
4079 if (Lex.getKind() == lltok::kw_atomic) {
4084 bool isVolatile = false;
4085 if (Lex.getKind() == lltok::kw_volatile) {
4090 if (ParseTypeAndValue(Val, Loc, PFS) ||
4091 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4092 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4095 if (!Val->getType()->isPointerTy() ||
4096 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4097 return Error(Loc, "load operand must be a pointer to a first class type");
4098 if (isAtomic && !Alignment)
4099 return Error(Loc, "atomic load must have explicit non-zero alignment");
4100 if (Ordering == Release || Ordering == AcquireRelease)
4101 return Error(Loc, "atomic load cannot use Release ordering");
4103 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4104 return AteExtraComma ? InstExtraComma : InstNormal;
4109 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4110 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4111 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4112 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4113 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4114 unsigned Alignment = 0;
4115 bool AteExtraComma = false;
4116 bool isAtomic = false;
4117 AtomicOrdering Ordering = NotAtomic;
4118 SynchronizationScope Scope = CrossThread;
4120 if (Lex.getKind() == lltok::kw_atomic) {
4125 bool isVolatile = false;
4126 if (Lex.getKind() == lltok::kw_volatile) {
4131 if (ParseTypeAndValue(Val, Loc, PFS) ||
4132 ParseToken(lltok::comma, "expected ',' after store operand") ||
4133 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4134 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4135 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4138 if (!Ptr->getType()->isPointerTy())
4139 return Error(PtrLoc, "store operand must be a pointer");
4140 if (!Val->getType()->isFirstClassType())
4141 return Error(Loc, "store operand must be a first class value");
4142 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4143 return Error(Loc, "stored value and pointer type do not match");
4144 if (isAtomic && !Alignment)
4145 return Error(Loc, "atomic store must have explicit non-zero alignment");
4146 if (Ordering == Acquire || Ordering == AcquireRelease)
4147 return Error(Loc, "atomic store cannot use Acquire ordering");
4149 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4150 return AteExtraComma ? InstExtraComma : InstNormal;
4154 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4155 /// 'singlethread'? AtomicOrdering
4156 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4157 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4158 bool AteExtraComma = false;
4159 AtomicOrdering Ordering = NotAtomic;
4160 SynchronizationScope Scope = CrossThread;
4161 bool isVolatile = false;
4163 if (EatIfPresent(lltok::kw_volatile))
4166 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4167 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4168 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4169 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4170 ParseTypeAndValue(New, NewLoc, PFS) ||
4171 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4174 if (Ordering == Unordered)
4175 return TokError("cmpxchg cannot be unordered");
4176 if (!Ptr->getType()->isPointerTy())
4177 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4178 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4179 return Error(CmpLoc, "compare value and pointer type do not match");
4180 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4181 return Error(NewLoc, "new value and pointer type do not match");
4182 if (!New->getType()->isIntegerTy())
4183 return Error(NewLoc, "cmpxchg operand must be an integer");
4184 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4185 if (Size < 8 || (Size & (Size - 1)))
4186 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4189 AtomicCmpXchgInst *CXI =
4190 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4191 CXI->setVolatile(isVolatile);
4193 return AteExtraComma ? InstExtraComma : InstNormal;
4197 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4198 /// 'singlethread'? AtomicOrdering
4199 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4200 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4201 bool AteExtraComma = false;
4202 AtomicOrdering Ordering = NotAtomic;
4203 SynchronizationScope Scope = CrossThread;
4204 bool isVolatile = false;
4205 AtomicRMWInst::BinOp Operation;
4207 if (EatIfPresent(lltok::kw_volatile))
4210 switch (Lex.getKind()) {
4211 default: return TokError("expected binary operation in atomicrmw");
4212 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4213 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4214 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4215 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4216 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4217 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4218 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4219 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4220 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4221 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4222 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4224 Lex.Lex(); // Eat the operation.
4226 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4227 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4228 ParseTypeAndValue(Val, ValLoc, PFS) ||
4229 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4232 if (Ordering == Unordered)
4233 return TokError("atomicrmw cannot be unordered");
4234 if (!Ptr->getType()->isPointerTy())
4235 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4236 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4237 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4238 if (!Val->getType()->isIntegerTy())
4239 return Error(ValLoc, "atomicrmw operand must be an integer");
4240 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4241 if (Size < 8 || (Size & (Size - 1)))
4242 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4245 AtomicRMWInst *RMWI =
4246 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4247 RMWI->setVolatile(isVolatile);
4249 return AteExtraComma ? InstExtraComma : InstNormal;
4253 /// ::= 'fence' 'singlethread'? AtomicOrdering
4254 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4255 AtomicOrdering Ordering = NotAtomic;
4256 SynchronizationScope Scope = CrossThread;
4257 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4260 if (Ordering == Unordered)
4261 return TokError("fence cannot be unordered");
4262 if (Ordering == Monotonic)
4263 return TokError("fence cannot be monotonic");
4265 Inst = new FenceInst(Context, Ordering, Scope);
4269 /// ParseGetElementPtr
4270 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4271 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4276 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4278 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4280 Type *BaseType = Ptr->getType();
4281 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4282 if (!BasePointerType)
4283 return Error(Loc, "base of getelementptr must be a pointer");
4285 SmallVector<Value*, 16> Indices;
4286 bool AteExtraComma = false;
4287 while (EatIfPresent(lltok::comma)) {
4288 if (Lex.getKind() == lltok::MetadataVar) {
4289 AteExtraComma = true;
4292 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4293 if (!Val->getType()->getScalarType()->isIntegerTy())
4294 return Error(EltLoc, "getelementptr index must be an integer");
4295 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4296 return Error(EltLoc, "getelementptr index type missmatch");
4297 if (Val->getType()->isVectorTy()) {
4298 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4299 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4300 if (ValNumEl != PtrNumEl)
4301 return Error(EltLoc,
4302 "getelementptr vector index has a wrong number of elements");
4304 Indices.push_back(Val);
4307 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4308 return Error(Loc, "base element of getelementptr must be sized");
4310 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4311 return Error(Loc, "invalid getelementptr indices");
4312 Inst = GetElementPtrInst::Create(Ptr, Indices);
4314 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4315 return AteExtraComma ? InstExtraComma : InstNormal;
4318 /// ParseExtractValue
4319 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4320 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4321 Value *Val; LocTy Loc;
4322 SmallVector<unsigned, 4> Indices;
4324 if (ParseTypeAndValue(Val, Loc, PFS) ||
4325 ParseIndexList(Indices, AteExtraComma))
4328 if (!Val->getType()->isAggregateType())
4329 return Error(Loc, "extractvalue operand must be aggregate type");
4331 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4332 return Error(Loc, "invalid indices for extractvalue");
4333 Inst = ExtractValueInst::Create(Val, Indices);
4334 return AteExtraComma ? InstExtraComma : InstNormal;
4337 /// ParseInsertValue
4338 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4339 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4340 Value *Val0, *Val1; LocTy Loc0, Loc1;
4341 SmallVector<unsigned, 4> Indices;
4343 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4344 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4345 ParseTypeAndValue(Val1, Loc1, PFS) ||
4346 ParseIndexList(Indices, AteExtraComma))
4349 if (!Val0->getType()->isAggregateType())
4350 return Error(Loc0, "insertvalue operand must be aggregate type");
4352 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4353 return Error(Loc0, "invalid indices for insertvalue");
4354 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4355 return AteExtraComma ? InstExtraComma : InstNormal;
4358 //===----------------------------------------------------------------------===//
4359 // Embedded metadata.
4360 //===----------------------------------------------------------------------===//
4362 /// ParseMDNodeVector
4363 /// ::= Element (',' Element)*
4365 /// ::= 'null' | TypeAndValue
4366 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4367 PerFunctionState *PFS) {
4368 // Check for an empty list.
4369 if (Lex.getKind() == lltok::rbrace)
4373 // Null is a special case since it is typeless.
4374 if (EatIfPresent(lltok::kw_null)) {
4380 if (ParseTypeAndValue(V, PFS)) return true;
4382 } while (EatIfPresent(lltok::comma));