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 &NoBuiltinLoc) {
834 bool HaveError = false;
839 lltok::Kind Token = Lex.getKind();
840 if (Token == lltok::kw_nobuiltin)
841 NoBuiltinLoc = 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_inlinehint: B.addAttribute(Attribute::InlineHint); break;
913 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
914 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
915 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
916 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
917 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
918 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
919 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
920 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
921 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
922 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
923 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
924 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
925 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
926 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
927 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
928 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
929 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
930 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
931 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
932 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
933 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
936 case lltok::kw_inreg:
937 case lltok::kw_signext:
938 case lltok::kw_zeroext:
941 "invalid use of attribute on a function");
943 case lltok::kw_byval:
945 case lltok::kw_noalias:
946 case lltok::kw_nocapture:
947 case lltok::kw_returned:
951 "invalid use of parameter-only attribute on a function");
959 //===----------------------------------------------------------------------===//
960 // GlobalValue Reference/Resolution Routines.
961 //===----------------------------------------------------------------------===//
963 /// GetGlobalVal - Get a value with the specified name or ID, creating a
964 /// forward reference record if needed. This can return null if the value
965 /// exists but does not have the right type.
966 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
968 PointerType *PTy = dyn_cast<PointerType>(Ty);
970 Error(Loc, "global variable reference must have pointer type");
974 // Look this name up in the normal function symbol table.
976 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
978 // If this is a forward reference for the value, see if we already created a
979 // forward ref record.
981 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
982 I = ForwardRefVals.find(Name);
983 if (I != ForwardRefVals.end())
984 Val = I->second.first;
987 // If we have the value in the symbol table or fwd-ref table, return it.
989 if (Val->getType() == Ty) return Val;
990 Error(Loc, "'@" + Name + "' defined with type '" +
991 getTypeString(Val->getType()) + "'");
995 // Otherwise, create a new forward reference for this value and remember it.
997 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
998 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1000 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1001 GlobalValue::ExternalWeakLinkage, 0, Name,
1002 0, GlobalVariable::NotThreadLocal,
1003 PTy->getAddressSpace());
1005 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1009 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1010 PointerType *PTy = dyn_cast<PointerType>(Ty);
1012 Error(Loc, "global variable reference must have pointer type");
1016 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1018 // If this is a forward reference for the value, see if we already created a
1019 // forward ref record.
1021 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1022 I = ForwardRefValIDs.find(ID);
1023 if (I != ForwardRefValIDs.end())
1024 Val = I->second.first;
1027 // If we have the value in the symbol table or fwd-ref table, return it.
1029 if (Val->getType() == Ty) return Val;
1030 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1031 getTypeString(Val->getType()) + "'");
1035 // Otherwise, create a new forward reference for this value and remember it.
1036 GlobalValue *FwdVal;
1037 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1038 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1040 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1041 GlobalValue::ExternalWeakLinkage, 0, "");
1043 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1048 //===----------------------------------------------------------------------===//
1050 //===----------------------------------------------------------------------===//
1052 /// ParseToken - If the current token has the specified kind, eat it and return
1053 /// success. Otherwise, emit the specified error and return failure.
1054 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1055 if (Lex.getKind() != T)
1056 return TokError(ErrMsg);
1061 /// ParseStringConstant
1062 /// ::= StringConstant
1063 bool LLParser::ParseStringConstant(std::string &Result) {
1064 if (Lex.getKind() != lltok::StringConstant)
1065 return TokError("expected string constant");
1066 Result = Lex.getStrVal();
1073 bool LLParser::ParseUInt32(unsigned &Val) {
1074 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1075 return TokError("expected integer");
1076 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1077 if (Val64 != unsigned(Val64))
1078 return TokError("expected 32-bit integer (too large)");
1085 /// := 'localdynamic'
1086 /// := 'initialexec'
1088 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1089 switch (Lex.getKind()) {
1091 return TokError("expected localdynamic, initialexec or localexec");
1092 case lltok::kw_localdynamic:
1093 TLM = GlobalVariable::LocalDynamicTLSModel;
1095 case lltok::kw_initialexec:
1096 TLM = GlobalVariable::InitialExecTLSModel;
1098 case lltok::kw_localexec:
1099 TLM = GlobalVariable::LocalExecTLSModel;
1107 /// ParseOptionalThreadLocal
1109 /// := 'thread_local'
1110 /// := 'thread_local' '(' tlsmodel ')'
1111 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1112 TLM = GlobalVariable::NotThreadLocal;
1113 if (!EatIfPresent(lltok::kw_thread_local))
1116 TLM = GlobalVariable::GeneralDynamicTLSModel;
1117 if (Lex.getKind() == lltok::lparen) {
1119 return ParseTLSModel(TLM) ||
1120 ParseToken(lltok::rparen, "expected ')' after thread local model");
1125 /// ParseOptionalAddrSpace
1127 /// := 'addrspace' '(' uint32 ')'
1128 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1130 if (!EatIfPresent(lltok::kw_addrspace))
1132 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1133 ParseUInt32(AddrSpace) ||
1134 ParseToken(lltok::rparen, "expected ')' in address space");
1137 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1138 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1139 bool HaveError = false;
1144 lltok::Kind Token = Lex.getKind();
1146 default: // End of attributes.
1148 case lltok::kw_align: {
1150 if (ParseOptionalAlignment(Alignment))
1152 B.addAlignmentAttr(Alignment);
1155 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1156 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1157 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1158 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1159 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1160 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1161 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1162 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1163 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1165 case lltok::kw_alignstack:
1166 case lltok::kw_alwaysinline:
1167 case lltok::kw_inlinehint:
1168 case lltok::kw_minsize:
1169 case lltok::kw_naked:
1170 case lltok::kw_nobuiltin:
1171 case lltok::kw_noduplicate:
1172 case lltok::kw_noimplicitfloat:
1173 case lltok::kw_noinline:
1174 case lltok::kw_nonlazybind:
1175 case lltok::kw_noredzone:
1176 case lltok::kw_noreturn:
1177 case lltok::kw_nounwind:
1178 case lltok::kw_optsize:
1179 case lltok::kw_readnone:
1180 case lltok::kw_readonly:
1181 case lltok::kw_returns_twice:
1182 case lltok::kw_sanitize_address:
1183 case lltok::kw_sanitize_memory:
1184 case lltok::kw_sanitize_thread:
1186 case lltok::kw_sspreq:
1187 case lltok::kw_sspstrong:
1188 case lltok::kw_uwtable:
1189 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1197 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1198 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1199 bool HaveError = false;
1204 lltok::Kind Token = Lex.getKind();
1206 default: // End of attributes.
1208 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1209 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1210 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1211 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1214 case lltok::kw_align:
1215 case lltok::kw_byval:
1216 case lltok::kw_nest:
1217 case lltok::kw_nocapture:
1218 case lltok::kw_returned:
1219 case lltok::kw_sret:
1220 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1223 case lltok::kw_alignstack:
1224 case lltok::kw_alwaysinline:
1225 case lltok::kw_inlinehint:
1226 case lltok::kw_minsize:
1227 case lltok::kw_naked:
1228 case lltok::kw_nobuiltin:
1229 case lltok::kw_noduplicate:
1230 case lltok::kw_noimplicitfloat:
1231 case lltok::kw_noinline:
1232 case lltok::kw_nonlazybind:
1233 case lltok::kw_noredzone:
1234 case lltok::kw_noreturn:
1235 case lltok::kw_nounwind:
1236 case lltok::kw_optsize:
1237 case lltok::kw_readnone:
1238 case lltok::kw_readonly:
1239 case lltok::kw_returns_twice:
1240 case lltok::kw_sanitize_address:
1241 case lltok::kw_sanitize_memory:
1242 case lltok::kw_sanitize_thread:
1244 case lltok::kw_sspreq:
1245 case lltok::kw_sspstrong:
1246 case lltok::kw_uwtable:
1247 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1255 /// ParseOptionalLinkage
1258 /// ::= 'linker_private'
1259 /// ::= 'linker_private_weak'
1264 /// ::= 'linkonce_odr'
1265 /// ::= 'linkonce_odr_auto_hide'
1266 /// ::= 'available_externally'
1271 /// ::= 'extern_weak'
1273 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1275 switch (Lex.getKind()) {
1276 default: Res=GlobalValue::ExternalLinkage; return false;
1277 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1278 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1279 case lltok::kw_linker_private_weak:
1280 Res = GlobalValue::LinkerPrivateWeakLinkage;
1282 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1283 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1284 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1285 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1286 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1287 case lltok::kw_linkonce_odr_auto_hide:
1288 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1289 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1291 case lltok::kw_available_externally:
1292 Res = GlobalValue::AvailableExternallyLinkage;
1294 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1295 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1296 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1297 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1298 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1299 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1306 /// ParseOptionalVisibility
1312 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1313 switch (Lex.getKind()) {
1314 default: Res = GlobalValue::DefaultVisibility; return false;
1315 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1316 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1317 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1323 /// ParseOptionalCallingConv
1327 /// ::= 'kw_intel_ocl_bicc'
1329 /// ::= 'x86_stdcallcc'
1330 /// ::= 'x86_fastcallcc'
1331 /// ::= 'x86_thiscallcc'
1332 /// ::= 'arm_apcscc'
1333 /// ::= 'arm_aapcscc'
1334 /// ::= 'arm_aapcs_vfpcc'
1335 /// ::= 'msp430_intrcc'
1336 /// ::= 'ptx_kernel'
1337 /// ::= 'ptx_device'
1339 /// ::= 'spir_kernel'
1342 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1343 switch (Lex.getKind()) {
1344 default: CC = CallingConv::C; return false;
1345 case lltok::kw_ccc: CC = CallingConv::C; break;
1346 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1347 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1348 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1349 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1350 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1351 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1352 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1353 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1354 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1355 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1356 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1357 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1358 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1359 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1360 case lltok::kw_cc: {
1361 unsigned ArbitraryCC;
1363 if (ParseUInt32(ArbitraryCC))
1365 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1374 /// ParseInstructionMetadata
1375 /// ::= !dbg !42 (',' !dbg !57)*
1376 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1377 PerFunctionState *PFS) {
1379 if (Lex.getKind() != lltok::MetadataVar)
1380 return TokError("expected metadata after comma");
1382 std::string Name = Lex.getStrVal();
1383 unsigned MDK = M->getMDKindID(Name);
1387 SMLoc Loc = Lex.getLoc();
1389 if (ParseToken(lltok::exclaim, "expected '!' here"))
1392 // This code is similar to that of ParseMetadataValue, however it needs to
1393 // have special-case code for a forward reference; see the comments on
1394 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1395 // at the top level here.
1396 if (Lex.getKind() == lltok::lbrace) {
1398 if (ParseMetadataListValue(ID, PFS))
1400 assert(ID.Kind == ValID::t_MDNode);
1401 Inst->setMetadata(MDK, ID.MDNodeVal);
1403 unsigned NodeID = 0;
1404 if (ParseMDNodeID(Node, NodeID))
1407 // If we got the node, add it to the instruction.
1408 Inst->setMetadata(MDK, Node);
1410 MDRef R = { Loc, MDK, NodeID };
1411 // Otherwise, remember that this should be resolved later.
1412 ForwardRefInstMetadata[Inst].push_back(R);
1416 // If this is the end of the list, we're done.
1417 } while (EatIfPresent(lltok::comma));
1421 /// ParseOptionalAlignment
1424 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1426 if (!EatIfPresent(lltok::kw_align))
1428 LocTy AlignLoc = Lex.getLoc();
1429 if (ParseUInt32(Alignment)) return true;
1430 if (!isPowerOf2_32(Alignment))
1431 return Error(AlignLoc, "alignment is not a power of two");
1432 if (Alignment > Value::MaximumAlignment)
1433 return Error(AlignLoc, "huge alignments are not supported yet");
1437 /// ParseOptionalCommaAlign
1441 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1443 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1444 bool &AteExtraComma) {
1445 AteExtraComma = false;
1446 while (EatIfPresent(lltok::comma)) {
1447 // Metadata at the end is an early exit.
1448 if (Lex.getKind() == lltok::MetadataVar) {
1449 AteExtraComma = true;
1453 if (Lex.getKind() != lltok::kw_align)
1454 return Error(Lex.getLoc(), "expected metadata or 'align'");
1456 if (ParseOptionalAlignment(Alignment)) return true;
1462 /// ParseScopeAndOrdering
1463 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1466 /// This sets Scope and Ordering to the parsed values.
1467 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1468 AtomicOrdering &Ordering) {
1472 Scope = CrossThread;
1473 if (EatIfPresent(lltok::kw_singlethread))
1474 Scope = SingleThread;
1475 switch (Lex.getKind()) {
1476 default: return TokError("Expected ordering on atomic instruction");
1477 case lltok::kw_unordered: Ordering = Unordered; break;
1478 case lltok::kw_monotonic: Ordering = Monotonic; break;
1479 case lltok::kw_acquire: Ordering = Acquire; break;
1480 case lltok::kw_release: Ordering = Release; break;
1481 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1482 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1488 /// ParseOptionalStackAlignment
1490 /// ::= 'alignstack' '(' 4 ')'
1491 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1493 if (!EatIfPresent(lltok::kw_alignstack))
1495 LocTy ParenLoc = Lex.getLoc();
1496 if (!EatIfPresent(lltok::lparen))
1497 return Error(ParenLoc, "expected '('");
1498 LocTy AlignLoc = Lex.getLoc();
1499 if (ParseUInt32(Alignment)) return true;
1500 ParenLoc = Lex.getLoc();
1501 if (!EatIfPresent(lltok::rparen))
1502 return Error(ParenLoc, "expected ')'");
1503 if (!isPowerOf2_32(Alignment))
1504 return Error(AlignLoc, "stack alignment is not a power of two");
1508 /// ParseIndexList - This parses the index list for an insert/extractvalue
1509 /// instruction. This sets AteExtraComma in the case where we eat an extra
1510 /// comma at the end of the line and find that it is followed by metadata.
1511 /// Clients that don't allow metadata can call the version of this function that
1512 /// only takes one argument.
1515 /// ::= (',' uint32)+
1517 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1518 bool &AteExtraComma) {
1519 AteExtraComma = false;
1521 if (Lex.getKind() != lltok::comma)
1522 return TokError("expected ',' as start of index list");
1524 while (EatIfPresent(lltok::comma)) {
1525 if (Lex.getKind() == lltok::MetadataVar) {
1526 AteExtraComma = true;
1530 if (ParseUInt32(Idx)) return true;
1531 Indices.push_back(Idx);
1537 //===----------------------------------------------------------------------===//
1539 //===----------------------------------------------------------------------===//
1541 /// ParseType - Parse a type.
1542 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1543 SMLoc TypeLoc = Lex.getLoc();
1544 switch (Lex.getKind()) {
1546 return TokError("expected type");
1548 // Type ::= 'float' | 'void' (etc)
1549 Result = Lex.getTyVal();
1553 // Type ::= StructType
1554 if (ParseAnonStructType(Result, false))
1557 case lltok::lsquare:
1558 // Type ::= '[' ... ']'
1559 Lex.Lex(); // eat the lsquare.
1560 if (ParseArrayVectorType(Result, false))
1563 case lltok::less: // Either vector or packed struct.
1564 // Type ::= '<' ... '>'
1566 if (Lex.getKind() == lltok::lbrace) {
1567 if (ParseAnonStructType(Result, true) ||
1568 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1570 } else if (ParseArrayVectorType(Result, true))
1573 case lltok::LocalVar: {
1575 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1577 // If the type hasn't been defined yet, create a forward definition and
1578 // remember where that forward def'n was seen (in case it never is defined).
1579 if (Entry.first == 0) {
1580 Entry.first = StructType::create(Context, Lex.getStrVal());
1581 Entry.second = Lex.getLoc();
1583 Result = Entry.first;
1588 case lltok::LocalVarID: {
1590 if (Lex.getUIntVal() >= NumberedTypes.size())
1591 NumberedTypes.resize(Lex.getUIntVal()+1);
1592 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1594 // If the type hasn't been defined yet, create a forward definition and
1595 // remember where that forward def'n was seen (in case it never is defined).
1596 if (Entry.first == 0) {
1597 Entry.first = StructType::create(Context);
1598 Entry.second = Lex.getLoc();
1600 Result = Entry.first;
1606 // Parse the type suffixes.
1608 switch (Lex.getKind()) {
1611 if (!AllowVoid && Result->isVoidTy())
1612 return Error(TypeLoc, "void type only allowed for function results");
1615 // Type ::= Type '*'
1617 if (Result->isLabelTy())
1618 return TokError("basic block pointers are invalid");
1619 if (Result->isVoidTy())
1620 return TokError("pointers to void are invalid - use i8* instead");
1621 if (!PointerType::isValidElementType(Result))
1622 return TokError("pointer to this type is invalid");
1623 Result = PointerType::getUnqual(Result);
1627 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1628 case lltok::kw_addrspace: {
1629 if (Result->isLabelTy())
1630 return TokError("basic block pointers are invalid");
1631 if (Result->isVoidTy())
1632 return TokError("pointers to void are invalid; use i8* instead");
1633 if (!PointerType::isValidElementType(Result))
1634 return TokError("pointer to this type is invalid");
1636 if (ParseOptionalAddrSpace(AddrSpace) ||
1637 ParseToken(lltok::star, "expected '*' in address space"))
1640 Result = PointerType::get(Result, AddrSpace);
1644 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1646 if (ParseFunctionType(Result))
1653 /// ParseParameterList
1655 /// ::= '(' Arg (',' Arg)* ')'
1657 /// ::= Type OptionalAttributes Value OptionalAttributes
1658 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1659 PerFunctionState &PFS) {
1660 if (ParseToken(lltok::lparen, "expected '(' in call"))
1663 unsigned AttrIndex = 1;
1664 while (Lex.getKind() != lltok::rparen) {
1665 // If this isn't the first argument, we need a comma.
1666 if (!ArgList.empty() &&
1667 ParseToken(lltok::comma, "expected ',' in argument list"))
1670 // Parse the argument.
1673 AttrBuilder ArgAttrs;
1675 if (ParseType(ArgTy, ArgLoc))
1678 // Otherwise, handle normal operands.
1679 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1681 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1686 Lex.Lex(); // Lex the ')'.
1692 /// ParseArgumentList - Parse the argument list for a function type or function
1694 /// ::= '(' ArgTypeListI ')'
1698 /// ::= ArgTypeList ',' '...'
1699 /// ::= ArgType (',' ArgType)*
1701 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1704 assert(Lex.getKind() == lltok::lparen);
1705 Lex.Lex(); // eat the (.
1707 if (Lex.getKind() == lltok::rparen) {
1709 } else if (Lex.getKind() == lltok::dotdotdot) {
1713 LocTy TypeLoc = Lex.getLoc();
1718 if (ParseType(ArgTy) ||
1719 ParseOptionalParamAttrs(Attrs)) return true;
1721 if (ArgTy->isVoidTy())
1722 return Error(TypeLoc, "argument can not have void type");
1724 if (Lex.getKind() == lltok::LocalVar) {
1725 Name = Lex.getStrVal();
1729 if (!FunctionType::isValidArgumentType(ArgTy))
1730 return Error(TypeLoc, "invalid type for function argument");
1732 unsigned AttrIndex = 1;
1733 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1734 AttributeSet::get(ArgTy->getContext(),
1735 AttrIndex++, Attrs), Name));
1737 while (EatIfPresent(lltok::comma)) {
1738 // Handle ... at end of arg list.
1739 if (EatIfPresent(lltok::dotdotdot)) {
1744 // Otherwise must be an argument type.
1745 TypeLoc = Lex.getLoc();
1746 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1748 if (ArgTy->isVoidTy())
1749 return Error(TypeLoc, "argument can not have void type");
1751 if (Lex.getKind() == lltok::LocalVar) {
1752 Name = Lex.getStrVal();
1758 if (!ArgTy->isFirstClassType())
1759 return Error(TypeLoc, "invalid type for function argument");
1761 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1762 AttributeSet::get(ArgTy->getContext(),
1763 AttrIndex++, Attrs),
1768 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1771 /// ParseFunctionType
1772 /// ::= Type ArgumentList OptionalAttrs
1773 bool LLParser::ParseFunctionType(Type *&Result) {
1774 assert(Lex.getKind() == lltok::lparen);
1776 if (!FunctionType::isValidReturnType(Result))
1777 return TokError("invalid function return type");
1779 SmallVector<ArgInfo, 8> ArgList;
1781 if (ParseArgumentList(ArgList, isVarArg))
1784 // Reject names on the arguments lists.
1785 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1786 if (!ArgList[i].Name.empty())
1787 return Error(ArgList[i].Loc, "argument name invalid in function type");
1788 if (ArgList[i].Attrs.hasAttributes(i + 1))
1789 return Error(ArgList[i].Loc,
1790 "argument attributes invalid in function type");
1793 SmallVector<Type*, 16> ArgListTy;
1794 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1795 ArgListTy.push_back(ArgList[i].Ty);
1797 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1801 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1803 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1804 SmallVector<Type*, 8> Elts;
1805 if (ParseStructBody(Elts)) return true;
1807 Result = StructType::get(Context, Elts, Packed);
1811 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1812 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1813 std::pair<Type*, LocTy> &Entry,
1815 // If the type was already defined, diagnose the redefinition.
1816 if (Entry.first && !Entry.second.isValid())
1817 return Error(TypeLoc, "redefinition of type");
1819 // If we have opaque, just return without filling in the definition for the
1820 // struct. This counts as a definition as far as the .ll file goes.
1821 if (EatIfPresent(lltok::kw_opaque)) {
1822 // This type is being defined, so clear the location to indicate this.
1823 Entry.second = SMLoc();
1825 // If this type number has never been uttered, create it.
1826 if (Entry.first == 0)
1827 Entry.first = StructType::create(Context, Name);
1828 ResultTy = Entry.first;
1832 // If the type starts with '<', then it is either a packed struct or a vector.
1833 bool isPacked = EatIfPresent(lltok::less);
1835 // If we don't have a struct, then we have a random type alias, which we
1836 // accept for compatibility with old files. These types are not allowed to be
1837 // forward referenced and not allowed to be recursive.
1838 if (Lex.getKind() != lltok::lbrace) {
1840 return Error(TypeLoc, "forward references to non-struct type");
1844 return ParseArrayVectorType(ResultTy, true);
1845 return ParseType(ResultTy);
1848 // This type is being defined, so clear the location to indicate this.
1849 Entry.second = SMLoc();
1851 // If this type number has never been uttered, create it.
1852 if (Entry.first == 0)
1853 Entry.first = StructType::create(Context, Name);
1855 StructType *STy = cast<StructType>(Entry.first);
1857 SmallVector<Type*, 8> Body;
1858 if (ParseStructBody(Body) ||
1859 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1862 STy->setBody(Body, isPacked);
1868 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1871 /// ::= '{' Type (',' Type)* '}'
1872 /// ::= '<' '{' '}' '>'
1873 /// ::= '<' '{' Type (',' Type)* '}' '>'
1874 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1875 assert(Lex.getKind() == lltok::lbrace);
1876 Lex.Lex(); // Consume the '{'
1878 // Handle the empty struct.
1879 if (EatIfPresent(lltok::rbrace))
1882 LocTy EltTyLoc = Lex.getLoc();
1884 if (ParseType(Ty)) return true;
1887 if (!StructType::isValidElementType(Ty))
1888 return Error(EltTyLoc, "invalid element type for struct");
1890 while (EatIfPresent(lltok::comma)) {
1891 EltTyLoc = Lex.getLoc();
1892 if (ParseType(Ty)) return true;
1894 if (!StructType::isValidElementType(Ty))
1895 return Error(EltTyLoc, "invalid element type for struct");
1900 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1903 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1904 /// token has already been consumed.
1906 /// ::= '[' APSINTVAL 'x' Types ']'
1907 /// ::= '<' APSINTVAL 'x' Types '>'
1908 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1909 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1910 Lex.getAPSIntVal().getBitWidth() > 64)
1911 return TokError("expected number in address space");
1913 LocTy SizeLoc = Lex.getLoc();
1914 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1917 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1920 LocTy TypeLoc = Lex.getLoc();
1922 if (ParseType(EltTy)) return true;
1924 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1925 "expected end of sequential type"))
1930 return Error(SizeLoc, "zero element vector is illegal");
1931 if ((unsigned)Size != Size)
1932 return Error(SizeLoc, "size too large for vector");
1933 if (!VectorType::isValidElementType(EltTy))
1934 return Error(TypeLoc, "invalid vector element type");
1935 Result = VectorType::get(EltTy, unsigned(Size));
1937 if (!ArrayType::isValidElementType(EltTy))
1938 return Error(TypeLoc, "invalid array element type");
1939 Result = ArrayType::get(EltTy, Size);
1944 //===----------------------------------------------------------------------===//
1945 // Function Semantic Analysis.
1946 //===----------------------------------------------------------------------===//
1948 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1950 : P(p), F(f), FunctionNumber(functionNumber) {
1952 // Insert unnamed arguments into the NumberedVals list.
1953 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1956 NumberedVals.push_back(AI);
1959 LLParser::PerFunctionState::~PerFunctionState() {
1960 // If there were any forward referenced non-basicblock values, delete them.
1961 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1962 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1963 if (!isa<BasicBlock>(I->second.first)) {
1964 I->second.first->replaceAllUsesWith(
1965 UndefValue::get(I->second.first->getType()));
1966 delete I->second.first;
1967 I->second.first = 0;
1970 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1971 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1972 if (!isa<BasicBlock>(I->second.first)) {
1973 I->second.first->replaceAllUsesWith(
1974 UndefValue::get(I->second.first->getType()));
1975 delete I->second.first;
1976 I->second.first = 0;
1980 bool LLParser::PerFunctionState::FinishFunction() {
1981 // Check to see if someone took the address of labels in this block.
1982 if (!P.ForwardRefBlockAddresses.empty()) {
1984 if (!F.getName().empty()) {
1985 FunctionID.Kind = ValID::t_GlobalName;
1986 FunctionID.StrVal = F.getName();
1988 FunctionID.Kind = ValID::t_GlobalID;
1989 FunctionID.UIntVal = FunctionNumber;
1992 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1993 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1994 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1995 // Resolve all these references.
1996 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1999 P.ForwardRefBlockAddresses.erase(FRBAI);
2003 if (!ForwardRefVals.empty())
2004 return P.Error(ForwardRefVals.begin()->second.second,
2005 "use of undefined value '%" + ForwardRefVals.begin()->first +
2007 if (!ForwardRefValIDs.empty())
2008 return P.Error(ForwardRefValIDs.begin()->second.second,
2009 "use of undefined value '%" +
2010 Twine(ForwardRefValIDs.begin()->first) + "'");
2015 /// GetVal - Get a value with the specified name or ID, creating a
2016 /// forward reference record if needed. This can return null if the value
2017 /// exists but does not have the right type.
2018 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2019 Type *Ty, LocTy Loc) {
2020 // Look this name up in the normal function symbol table.
2021 Value *Val = F.getValueSymbolTable().lookup(Name);
2023 // If this is a forward reference for the value, see if we already created a
2024 // forward ref record.
2026 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2027 I = ForwardRefVals.find(Name);
2028 if (I != ForwardRefVals.end())
2029 Val = I->second.first;
2032 // If we have the value in the symbol table or fwd-ref table, return it.
2034 if (Val->getType() == Ty) return Val;
2035 if (Ty->isLabelTy())
2036 P.Error(Loc, "'%" + Name + "' is not a basic block");
2038 P.Error(Loc, "'%" + Name + "' defined with type '" +
2039 getTypeString(Val->getType()) + "'");
2043 // Don't make placeholders with invalid type.
2044 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2045 P.Error(Loc, "invalid use of a non-first-class type");
2049 // Otherwise, create a new forward reference for this value and remember it.
2051 if (Ty->isLabelTy())
2052 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2054 FwdVal = new Argument(Ty, Name);
2056 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2060 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2062 // Look this name up in the normal function symbol table.
2063 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2065 // If this is a forward reference for the value, see if we already created a
2066 // forward ref record.
2068 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2069 I = ForwardRefValIDs.find(ID);
2070 if (I != ForwardRefValIDs.end())
2071 Val = I->second.first;
2074 // If we have the value in the symbol table or fwd-ref table, return it.
2076 if (Val->getType() == Ty) return Val;
2077 if (Ty->isLabelTy())
2078 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2080 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2081 getTypeString(Val->getType()) + "'");
2085 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2086 P.Error(Loc, "invalid use of a non-first-class type");
2090 // Otherwise, create a new forward reference for this value and remember it.
2092 if (Ty->isLabelTy())
2093 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2095 FwdVal = new Argument(Ty);
2097 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2101 /// SetInstName - After an instruction is parsed and inserted into its
2102 /// basic block, this installs its name.
2103 bool LLParser::PerFunctionState::SetInstName(int NameID,
2104 const std::string &NameStr,
2105 LocTy NameLoc, Instruction *Inst) {
2106 // If this instruction has void type, it cannot have a name or ID specified.
2107 if (Inst->getType()->isVoidTy()) {
2108 if (NameID != -1 || !NameStr.empty())
2109 return P.Error(NameLoc, "instructions returning void cannot have a name");
2113 // If this was a numbered instruction, verify that the instruction is the
2114 // expected value and resolve any forward references.
2115 if (NameStr.empty()) {
2116 // If neither a name nor an ID was specified, just use the next ID.
2118 NameID = NumberedVals.size();
2120 if (unsigned(NameID) != NumberedVals.size())
2121 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2122 Twine(NumberedVals.size()) + "'");
2124 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2125 ForwardRefValIDs.find(NameID);
2126 if (FI != ForwardRefValIDs.end()) {
2127 if (FI->second.first->getType() != Inst->getType())
2128 return P.Error(NameLoc, "instruction forward referenced with type '" +
2129 getTypeString(FI->second.first->getType()) + "'");
2130 FI->second.first->replaceAllUsesWith(Inst);
2131 delete FI->second.first;
2132 ForwardRefValIDs.erase(FI);
2135 NumberedVals.push_back(Inst);
2139 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2140 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2141 FI = ForwardRefVals.find(NameStr);
2142 if (FI != ForwardRefVals.end()) {
2143 if (FI->second.first->getType() != Inst->getType())
2144 return P.Error(NameLoc, "instruction forward referenced with type '" +
2145 getTypeString(FI->second.first->getType()) + "'");
2146 FI->second.first->replaceAllUsesWith(Inst);
2147 delete FI->second.first;
2148 ForwardRefVals.erase(FI);
2151 // Set the name on the instruction.
2152 Inst->setName(NameStr);
2154 if (Inst->getName() != NameStr)
2155 return P.Error(NameLoc, "multiple definition of local value named '" +
2160 /// GetBB - Get a basic block with the specified name or ID, creating a
2161 /// forward reference record if needed.
2162 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2164 return cast_or_null<BasicBlock>(GetVal(Name,
2165 Type::getLabelTy(F.getContext()), Loc));
2168 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2169 return cast_or_null<BasicBlock>(GetVal(ID,
2170 Type::getLabelTy(F.getContext()), Loc));
2173 /// DefineBB - Define the specified basic block, which is either named or
2174 /// unnamed. If there is an error, this returns null otherwise it returns
2175 /// the block being defined.
2176 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2180 BB = GetBB(NumberedVals.size(), Loc);
2182 BB = GetBB(Name, Loc);
2183 if (BB == 0) return 0; // Already diagnosed error.
2185 // Move the block to the end of the function. Forward ref'd blocks are
2186 // inserted wherever they happen to be referenced.
2187 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2189 // Remove the block from forward ref sets.
2191 ForwardRefValIDs.erase(NumberedVals.size());
2192 NumberedVals.push_back(BB);
2194 // BB forward references are already in the function symbol table.
2195 ForwardRefVals.erase(Name);
2201 //===----------------------------------------------------------------------===//
2203 //===----------------------------------------------------------------------===//
2205 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2206 /// type implied. For example, if we parse "4" we don't know what integer type
2207 /// it has. The value will later be combined with its type and checked for
2208 /// sanity. PFS is used to convert function-local operands of metadata (since
2209 /// metadata operands are not just parsed here but also converted to values).
2210 /// PFS can be null when we are not parsing metadata values inside a function.
2211 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2212 ID.Loc = Lex.getLoc();
2213 switch (Lex.getKind()) {
2214 default: return TokError("expected value token");
2215 case lltok::GlobalID: // @42
2216 ID.UIntVal = Lex.getUIntVal();
2217 ID.Kind = ValID::t_GlobalID;
2219 case lltok::GlobalVar: // @foo
2220 ID.StrVal = Lex.getStrVal();
2221 ID.Kind = ValID::t_GlobalName;
2223 case lltok::LocalVarID: // %42
2224 ID.UIntVal = Lex.getUIntVal();
2225 ID.Kind = ValID::t_LocalID;
2227 case lltok::LocalVar: // %foo
2228 ID.StrVal = Lex.getStrVal();
2229 ID.Kind = ValID::t_LocalName;
2231 case lltok::exclaim: // !42, !{...}, or !"foo"
2232 return ParseMetadataValue(ID, PFS);
2234 ID.APSIntVal = Lex.getAPSIntVal();
2235 ID.Kind = ValID::t_APSInt;
2237 case lltok::APFloat:
2238 ID.APFloatVal = Lex.getAPFloatVal();
2239 ID.Kind = ValID::t_APFloat;
2241 case lltok::kw_true:
2242 ID.ConstantVal = ConstantInt::getTrue(Context);
2243 ID.Kind = ValID::t_Constant;
2245 case lltok::kw_false:
2246 ID.ConstantVal = ConstantInt::getFalse(Context);
2247 ID.Kind = ValID::t_Constant;
2249 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2250 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2251 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2253 case lltok::lbrace: {
2254 // ValID ::= '{' ConstVector '}'
2256 SmallVector<Constant*, 16> Elts;
2257 if (ParseGlobalValueVector(Elts) ||
2258 ParseToken(lltok::rbrace, "expected end of struct constant"))
2261 ID.ConstantStructElts = new Constant*[Elts.size()];
2262 ID.UIntVal = Elts.size();
2263 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2264 ID.Kind = ValID::t_ConstantStruct;
2268 // ValID ::= '<' ConstVector '>' --> Vector.
2269 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2271 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2273 SmallVector<Constant*, 16> Elts;
2274 LocTy FirstEltLoc = Lex.getLoc();
2275 if (ParseGlobalValueVector(Elts) ||
2277 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2278 ParseToken(lltok::greater, "expected end of constant"))
2281 if (isPackedStruct) {
2282 ID.ConstantStructElts = new Constant*[Elts.size()];
2283 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2284 ID.UIntVal = Elts.size();
2285 ID.Kind = ValID::t_PackedConstantStruct;
2290 return Error(ID.Loc, "constant vector must not be empty");
2292 if (!Elts[0]->getType()->isIntegerTy() &&
2293 !Elts[0]->getType()->isFloatingPointTy() &&
2294 !Elts[0]->getType()->isPointerTy())
2295 return Error(FirstEltLoc,
2296 "vector elements must have integer, pointer or floating point type");
2298 // Verify that all the vector elements have the same type.
2299 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2300 if (Elts[i]->getType() != Elts[0]->getType())
2301 return Error(FirstEltLoc,
2302 "vector element #" + Twine(i) +
2303 " is not of type '" + getTypeString(Elts[0]->getType()));
2305 ID.ConstantVal = ConstantVector::get(Elts);
2306 ID.Kind = ValID::t_Constant;
2309 case lltok::lsquare: { // Array Constant
2311 SmallVector<Constant*, 16> Elts;
2312 LocTy FirstEltLoc = Lex.getLoc();
2313 if (ParseGlobalValueVector(Elts) ||
2314 ParseToken(lltok::rsquare, "expected end of array constant"))
2317 // Handle empty element.
2319 // Use undef instead of an array because it's inconvenient to determine
2320 // the element type at this point, there being no elements to examine.
2321 ID.Kind = ValID::t_EmptyArray;
2325 if (!Elts[0]->getType()->isFirstClassType())
2326 return Error(FirstEltLoc, "invalid array element type: " +
2327 getTypeString(Elts[0]->getType()));
2329 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2331 // Verify all elements are correct type!
2332 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2333 if (Elts[i]->getType() != Elts[0]->getType())
2334 return Error(FirstEltLoc,
2335 "array element #" + Twine(i) +
2336 " is not of type '" + getTypeString(Elts[0]->getType()));
2339 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2340 ID.Kind = ValID::t_Constant;
2343 case lltok::kw_c: // c "foo"
2345 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2347 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2348 ID.Kind = ValID::t_Constant;
2351 case lltok::kw_asm: {
2352 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2354 bool HasSideEffect, AlignStack, AsmDialect;
2356 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2357 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2358 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2359 ParseStringConstant(ID.StrVal) ||
2360 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2361 ParseToken(lltok::StringConstant, "expected constraint string"))
2363 ID.StrVal2 = Lex.getStrVal();
2364 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2365 (unsigned(AsmDialect)<<2);
2366 ID.Kind = ValID::t_InlineAsm;
2370 case lltok::kw_blockaddress: {
2371 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2375 LocTy FnLoc, LabelLoc;
2377 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2379 ParseToken(lltok::comma, "expected comma in block address expression")||
2380 ParseValID(Label) ||
2381 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2384 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2385 return Error(Fn.Loc, "expected function name in blockaddress");
2386 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2387 return Error(Label.Loc, "expected basic block name in blockaddress");
2389 // Make a global variable as a placeholder for this reference.
2390 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2391 false, GlobalValue::InternalLinkage,
2393 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2394 ID.ConstantVal = FwdRef;
2395 ID.Kind = ValID::t_Constant;
2399 case lltok::kw_trunc:
2400 case lltok::kw_zext:
2401 case lltok::kw_sext:
2402 case lltok::kw_fptrunc:
2403 case lltok::kw_fpext:
2404 case lltok::kw_bitcast:
2405 case lltok::kw_uitofp:
2406 case lltok::kw_sitofp:
2407 case lltok::kw_fptoui:
2408 case lltok::kw_fptosi:
2409 case lltok::kw_inttoptr:
2410 case lltok::kw_ptrtoint: {
2411 unsigned Opc = Lex.getUIntVal();
2415 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2416 ParseGlobalTypeAndValue(SrcVal) ||
2417 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2418 ParseType(DestTy) ||
2419 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2421 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2422 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2423 getTypeString(SrcVal->getType()) + "' to '" +
2424 getTypeString(DestTy) + "'");
2425 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2427 ID.Kind = ValID::t_Constant;
2430 case lltok::kw_extractvalue: {
2433 SmallVector<unsigned, 4> Indices;
2434 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2435 ParseGlobalTypeAndValue(Val) ||
2436 ParseIndexList(Indices) ||
2437 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2440 if (!Val->getType()->isAggregateType())
2441 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2442 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2443 return Error(ID.Loc, "invalid indices for extractvalue");
2444 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2445 ID.Kind = ValID::t_Constant;
2448 case lltok::kw_insertvalue: {
2450 Constant *Val0, *Val1;
2451 SmallVector<unsigned, 4> Indices;
2452 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2453 ParseGlobalTypeAndValue(Val0) ||
2454 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2455 ParseGlobalTypeAndValue(Val1) ||
2456 ParseIndexList(Indices) ||
2457 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2459 if (!Val0->getType()->isAggregateType())
2460 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2461 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2462 return Error(ID.Loc, "invalid indices for insertvalue");
2463 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2464 ID.Kind = ValID::t_Constant;
2467 case lltok::kw_icmp:
2468 case lltok::kw_fcmp: {
2469 unsigned PredVal, Opc = Lex.getUIntVal();
2470 Constant *Val0, *Val1;
2472 if (ParseCmpPredicate(PredVal, Opc) ||
2473 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2474 ParseGlobalTypeAndValue(Val0) ||
2475 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2476 ParseGlobalTypeAndValue(Val1) ||
2477 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2480 if (Val0->getType() != Val1->getType())
2481 return Error(ID.Loc, "compare operands must have the same type");
2483 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2485 if (Opc == Instruction::FCmp) {
2486 if (!Val0->getType()->isFPOrFPVectorTy())
2487 return Error(ID.Loc, "fcmp requires floating point operands");
2488 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2490 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2491 if (!Val0->getType()->isIntOrIntVectorTy() &&
2492 !Val0->getType()->getScalarType()->isPointerTy())
2493 return Error(ID.Loc, "icmp requires pointer or integer operands");
2494 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2496 ID.Kind = ValID::t_Constant;
2500 // Binary Operators.
2502 case lltok::kw_fadd:
2504 case lltok::kw_fsub:
2506 case lltok::kw_fmul:
2507 case lltok::kw_udiv:
2508 case lltok::kw_sdiv:
2509 case lltok::kw_fdiv:
2510 case lltok::kw_urem:
2511 case lltok::kw_srem:
2512 case lltok::kw_frem:
2514 case lltok::kw_lshr:
2515 case lltok::kw_ashr: {
2519 unsigned Opc = Lex.getUIntVal();
2520 Constant *Val0, *Val1;
2522 LocTy ModifierLoc = Lex.getLoc();
2523 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2524 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2525 if (EatIfPresent(lltok::kw_nuw))
2527 if (EatIfPresent(lltok::kw_nsw)) {
2529 if (EatIfPresent(lltok::kw_nuw))
2532 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2533 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2534 if (EatIfPresent(lltok::kw_exact))
2537 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2538 ParseGlobalTypeAndValue(Val0) ||
2539 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2540 ParseGlobalTypeAndValue(Val1) ||
2541 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2543 if (Val0->getType() != Val1->getType())
2544 return Error(ID.Loc, "operands of constexpr must have same type");
2545 if (!Val0->getType()->isIntOrIntVectorTy()) {
2547 return Error(ModifierLoc, "nuw only applies to integer operations");
2549 return Error(ModifierLoc, "nsw only applies to integer operations");
2551 // Check that the type is valid for the operator.
2553 case Instruction::Add:
2554 case Instruction::Sub:
2555 case Instruction::Mul:
2556 case Instruction::UDiv:
2557 case Instruction::SDiv:
2558 case Instruction::URem:
2559 case Instruction::SRem:
2560 case Instruction::Shl:
2561 case Instruction::AShr:
2562 case Instruction::LShr:
2563 if (!Val0->getType()->isIntOrIntVectorTy())
2564 return Error(ID.Loc, "constexpr requires integer operands");
2566 case Instruction::FAdd:
2567 case Instruction::FSub:
2568 case Instruction::FMul:
2569 case Instruction::FDiv:
2570 case Instruction::FRem:
2571 if (!Val0->getType()->isFPOrFPVectorTy())
2572 return Error(ID.Loc, "constexpr requires fp operands");
2574 default: llvm_unreachable("Unknown binary operator!");
2577 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2578 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2579 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2580 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2582 ID.Kind = ValID::t_Constant;
2586 // Logical Operations
2589 case lltok::kw_xor: {
2590 unsigned Opc = Lex.getUIntVal();
2591 Constant *Val0, *Val1;
2593 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2594 ParseGlobalTypeAndValue(Val0) ||
2595 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2596 ParseGlobalTypeAndValue(Val1) ||
2597 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2599 if (Val0->getType() != Val1->getType())
2600 return Error(ID.Loc, "operands of constexpr must have same type");
2601 if (!Val0->getType()->isIntOrIntVectorTy())
2602 return Error(ID.Loc,
2603 "constexpr requires integer or integer vector operands");
2604 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2605 ID.Kind = ValID::t_Constant;
2609 case lltok::kw_getelementptr:
2610 case lltok::kw_shufflevector:
2611 case lltok::kw_insertelement:
2612 case lltok::kw_extractelement:
2613 case lltok::kw_select: {
2614 unsigned Opc = Lex.getUIntVal();
2615 SmallVector<Constant*, 16> Elts;
2616 bool InBounds = false;
2618 if (Opc == Instruction::GetElementPtr)
2619 InBounds = EatIfPresent(lltok::kw_inbounds);
2620 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2621 ParseGlobalValueVector(Elts) ||
2622 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2625 if (Opc == Instruction::GetElementPtr) {
2626 if (Elts.size() == 0 ||
2627 !Elts[0]->getType()->getScalarType()->isPointerTy())
2628 return Error(ID.Loc, "getelementptr requires pointer operand");
2630 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2631 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2632 return Error(ID.Loc, "invalid indices for getelementptr");
2633 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2635 } else if (Opc == Instruction::Select) {
2636 if (Elts.size() != 3)
2637 return Error(ID.Loc, "expected three operands to select");
2638 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2640 return Error(ID.Loc, Reason);
2641 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2642 } else if (Opc == Instruction::ShuffleVector) {
2643 if (Elts.size() != 3)
2644 return Error(ID.Loc, "expected three operands to shufflevector");
2645 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2646 return Error(ID.Loc, "invalid operands to shufflevector");
2648 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2649 } else if (Opc == Instruction::ExtractElement) {
2650 if (Elts.size() != 2)
2651 return Error(ID.Loc, "expected two operands to extractelement");
2652 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2653 return Error(ID.Loc, "invalid extractelement operands");
2654 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2656 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2657 if (Elts.size() != 3)
2658 return Error(ID.Loc, "expected three operands to insertelement");
2659 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2660 return Error(ID.Loc, "invalid insertelement operands");
2662 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2665 ID.Kind = ValID::t_Constant;
2674 /// ParseGlobalValue - Parse a global value with the specified type.
2675 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2679 bool Parsed = ParseValID(ID) ||
2680 ConvertValIDToValue(Ty, ID, V, NULL);
2681 if (V && !(C = dyn_cast<Constant>(V)))
2682 return Error(ID.Loc, "global values must be constants");
2686 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2688 return ParseType(Ty) ||
2689 ParseGlobalValue(Ty, V);
2692 /// ParseGlobalValueVector
2694 /// ::= TypeAndValue (',' TypeAndValue)*
2695 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2697 if (Lex.getKind() == lltok::rbrace ||
2698 Lex.getKind() == lltok::rsquare ||
2699 Lex.getKind() == lltok::greater ||
2700 Lex.getKind() == lltok::rparen)
2704 if (ParseGlobalTypeAndValue(C)) return true;
2707 while (EatIfPresent(lltok::comma)) {
2708 if (ParseGlobalTypeAndValue(C)) return true;
2715 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2716 assert(Lex.getKind() == lltok::lbrace);
2719 SmallVector<Value*, 16> Elts;
2720 if (ParseMDNodeVector(Elts, PFS) ||
2721 ParseToken(lltok::rbrace, "expected end of metadata node"))
2724 ID.MDNodeVal = MDNode::get(Context, Elts);
2725 ID.Kind = ValID::t_MDNode;
2729 /// ParseMetadataValue
2733 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2734 assert(Lex.getKind() == lltok::exclaim);
2739 if (Lex.getKind() == lltok::lbrace)
2740 return ParseMetadataListValue(ID, PFS);
2742 // Standalone metadata reference
2744 if (Lex.getKind() == lltok::APSInt) {
2745 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2746 ID.Kind = ValID::t_MDNode;
2751 // ::= '!' STRINGCONSTANT
2752 if (ParseMDString(ID.MDStringVal)) return true;
2753 ID.Kind = ValID::t_MDString;
2758 //===----------------------------------------------------------------------===//
2759 // Function Parsing.
2760 //===----------------------------------------------------------------------===//
2762 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2763 PerFunctionState *PFS) {
2764 if (Ty->isFunctionTy())
2765 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2768 case ValID::t_LocalID:
2769 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2770 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2772 case ValID::t_LocalName:
2773 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2774 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2776 case ValID::t_InlineAsm: {
2777 PointerType *PTy = dyn_cast<PointerType>(Ty);
2779 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2780 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2781 return Error(ID.Loc, "invalid type for inline asm constraint string");
2782 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2783 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2786 case ValID::t_MDNode:
2787 if (!Ty->isMetadataTy())
2788 return Error(ID.Loc, "metadata value must have metadata type");
2791 case ValID::t_MDString:
2792 if (!Ty->isMetadataTy())
2793 return Error(ID.Loc, "metadata value must have metadata type");
2796 case ValID::t_GlobalName:
2797 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2799 case ValID::t_GlobalID:
2800 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2802 case ValID::t_APSInt:
2803 if (!Ty->isIntegerTy())
2804 return Error(ID.Loc, "integer constant must have integer type");
2805 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2806 V = ConstantInt::get(Context, ID.APSIntVal);
2808 case ValID::t_APFloat:
2809 if (!Ty->isFloatingPointTy() ||
2810 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2811 return Error(ID.Loc, "floating point constant invalid for type");
2813 // The lexer has no type info, so builds all half, float, and double FP
2814 // constants as double. Fix this here. Long double does not need this.
2815 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2818 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2820 else if (Ty->isFloatTy())
2821 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2824 V = ConstantFP::get(Context, ID.APFloatVal);
2826 if (V->getType() != Ty)
2827 return Error(ID.Loc, "floating point constant does not have type '" +
2828 getTypeString(Ty) + "'");
2832 if (!Ty->isPointerTy())
2833 return Error(ID.Loc, "null must be a pointer type");
2834 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2836 case ValID::t_Undef:
2837 // FIXME: LabelTy should not be a first-class type.
2838 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2839 return Error(ID.Loc, "invalid type for undef constant");
2840 V = UndefValue::get(Ty);
2842 case ValID::t_EmptyArray:
2843 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2844 return Error(ID.Loc, "invalid empty array initializer");
2845 V = UndefValue::get(Ty);
2848 // FIXME: LabelTy should not be a first-class type.
2849 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2850 return Error(ID.Loc, "invalid type for null constant");
2851 V = Constant::getNullValue(Ty);
2853 case ValID::t_Constant:
2854 if (ID.ConstantVal->getType() != Ty)
2855 return Error(ID.Loc, "constant expression type mismatch");
2859 case ValID::t_ConstantStruct:
2860 case ValID::t_PackedConstantStruct:
2861 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2862 if (ST->getNumElements() != ID.UIntVal)
2863 return Error(ID.Loc,
2864 "initializer with struct type has wrong # elements");
2865 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2866 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2868 // Verify that the elements are compatible with the structtype.
2869 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2870 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2871 return Error(ID.Loc, "element " + Twine(i) +
2872 " of struct initializer doesn't match struct element type");
2874 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2877 return Error(ID.Loc, "constant expression type mismatch");
2880 llvm_unreachable("Invalid ValID");
2883 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2886 return ParseValID(ID, PFS) ||
2887 ConvertValIDToValue(Ty, ID, V, PFS);
2890 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2892 return ParseType(Ty) ||
2893 ParseValue(Ty, V, PFS);
2896 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2897 PerFunctionState &PFS) {
2900 if (ParseTypeAndValue(V, PFS)) return true;
2901 if (!isa<BasicBlock>(V))
2902 return Error(Loc, "expected a basic block");
2903 BB = cast<BasicBlock>(V);
2909 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2910 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2911 /// OptionalAlign OptGC
2912 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2913 // Parse the linkage.
2914 LocTy LinkageLoc = Lex.getLoc();
2917 unsigned Visibility;
2918 AttrBuilder RetAttrs;
2921 LocTy RetTypeLoc = Lex.getLoc();
2922 if (ParseOptionalLinkage(Linkage) ||
2923 ParseOptionalVisibility(Visibility) ||
2924 ParseOptionalCallingConv(CC) ||
2925 ParseOptionalReturnAttrs(RetAttrs) ||
2926 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2929 // Verify that the linkage is ok.
2930 switch ((GlobalValue::LinkageTypes)Linkage) {
2931 case GlobalValue::ExternalLinkage:
2932 break; // always ok.
2933 case GlobalValue::DLLImportLinkage:
2934 case GlobalValue::ExternalWeakLinkage:
2936 return Error(LinkageLoc, "invalid linkage for function definition");
2938 case GlobalValue::PrivateLinkage:
2939 case GlobalValue::LinkerPrivateLinkage:
2940 case GlobalValue::LinkerPrivateWeakLinkage:
2941 case GlobalValue::InternalLinkage:
2942 case GlobalValue::AvailableExternallyLinkage:
2943 case GlobalValue::LinkOnceAnyLinkage:
2944 case GlobalValue::LinkOnceODRLinkage:
2945 case GlobalValue::LinkOnceODRAutoHideLinkage:
2946 case GlobalValue::WeakAnyLinkage:
2947 case GlobalValue::WeakODRLinkage:
2948 case GlobalValue::DLLExportLinkage:
2950 return Error(LinkageLoc, "invalid linkage for function declaration");
2952 case GlobalValue::AppendingLinkage:
2953 case GlobalValue::CommonLinkage:
2954 return Error(LinkageLoc, "invalid function linkage type");
2957 if (!FunctionType::isValidReturnType(RetType))
2958 return Error(RetTypeLoc, "invalid function return type");
2960 LocTy NameLoc = Lex.getLoc();
2962 std::string FunctionName;
2963 if (Lex.getKind() == lltok::GlobalVar) {
2964 FunctionName = Lex.getStrVal();
2965 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2966 unsigned NameID = Lex.getUIntVal();
2968 if (NameID != NumberedVals.size())
2969 return TokError("function expected to be numbered '%" +
2970 Twine(NumberedVals.size()) + "'");
2972 return TokError("expected function name");
2977 if (Lex.getKind() != lltok::lparen)
2978 return TokError("expected '(' in function argument list");
2980 SmallVector<ArgInfo, 8> ArgList;
2982 AttrBuilder FuncAttrs;
2983 std::vector<unsigned> FwdRefAttrGrps;
2985 std::string Section;
2989 LocTy UnnamedAddrLoc;
2991 if (ParseArgumentList(ArgList, isVarArg) ||
2992 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2994 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
2996 (EatIfPresent(lltok::kw_section) &&
2997 ParseStringConstant(Section)) ||
2998 ParseOptionalAlignment(Alignment) ||
2999 (EatIfPresent(lltok::kw_gc) &&
3000 ParseStringConstant(GC)))
3003 if (FuncAttrs.contains(Attribute::NoBuiltin))
3004 return Error(NoBuiltinLoc, "'nobuiltin' attribute not valid on function");
3006 // If the alignment was parsed as an attribute, move to the alignment field.
3007 if (FuncAttrs.hasAlignmentAttr()) {
3008 Alignment = FuncAttrs.getAlignment();
3009 FuncAttrs.removeAttribute(Attribute::Alignment);
3012 // Okay, if we got here, the function is syntactically valid. Convert types
3013 // and do semantic checks.
3014 std::vector<Type*> ParamTypeList;
3015 SmallVector<AttributeSet, 8> Attrs;
3017 if (RetAttrs.hasAttributes())
3018 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3019 AttributeSet::ReturnIndex,
3022 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3023 ParamTypeList.push_back(ArgList[i].Ty);
3024 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3025 AttrBuilder B(ArgList[i].Attrs, i + 1);
3026 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3030 if (FuncAttrs.hasAttributes())
3031 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3032 AttributeSet::FunctionIndex,
3035 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3037 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3038 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3041 FunctionType::get(RetType, ParamTypeList, isVarArg);
3042 PointerType *PFT = PointerType::getUnqual(FT);
3045 if (!FunctionName.empty()) {
3046 // If this was a definition of a forward reference, remove the definition
3047 // from the forward reference table and fill in the forward ref.
3048 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3049 ForwardRefVals.find(FunctionName);
3050 if (FRVI != ForwardRefVals.end()) {
3051 Fn = M->getFunction(FunctionName);
3053 return Error(FRVI->second.second, "invalid forward reference to "
3054 "function as global value!");
3055 if (Fn->getType() != PFT)
3056 return Error(FRVI->second.second, "invalid forward reference to "
3057 "function '" + FunctionName + "' with wrong type!");
3059 ForwardRefVals.erase(FRVI);
3060 } else if ((Fn = M->getFunction(FunctionName))) {
3061 // Reject redefinitions.
3062 return Error(NameLoc, "invalid redefinition of function '" +
3063 FunctionName + "'");
3064 } else if (M->getNamedValue(FunctionName)) {
3065 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3069 // If this is a definition of a forward referenced function, make sure the
3071 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3072 = ForwardRefValIDs.find(NumberedVals.size());
3073 if (I != ForwardRefValIDs.end()) {
3074 Fn = cast<Function>(I->second.first);
3075 if (Fn->getType() != PFT)
3076 return Error(NameLoc, "type of definition and forward reference of '@" +
3077 Twine(NumberedVals.size()) + "' disagree");
3078 ForwardRefValIDs.erase(I);
3083 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3084 else // Move the forward-reference to the correct spot in the module.
3085 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3087 if (FunctionName.empty())
3088 NumberedVals.push_back(Fn);
3090 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3091 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3092 Fn->setCallingConv(CC);
3093 Fn->setAttributes(PAL);
3094 Fn->setUnnamedAddr(UnnamedAddr);
3095 Fn->setAlignment(Alignment);
3096 Fn->setSection(Section);
3097 if (!GC.empty()) Fn->setGC(GC.c_str());
3098 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3100 // Add all of the arguments we parsed to the function.
3101 Function::arg_iterator ArgIt = Fn->arg_begin();
3102 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3103 // If the argument has a name, insert it into the argument symbol table.
3104 if (ArgList[i].Name.empty()) continue;
3106 // Set the name, if it conflicted, it will be auto-renamed.
3107 ArgIt->setName(ArgList[i].Name);
3109 if (ArgIt->getName() != ArgList[i].Name)
3110 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3111 ArgList[i].Name + "'");
3118 /// ParseFunctionBody
3119 /// ::= '{' BasicBlock+ '}'
3121 bool LLParser::ParseFunctionBody(Function &Fn) {
3122 if (Lex.getKind() != lltok::lbrace)
3123 return TokError("expected '{' in function body");
3124 Lex.Lex(); // eat the {.
3126 int FunctionNumber = -1;
3127 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3129 PerFunctionState PFS(*this, Fn, FunctionNumber);
3131 // We need at least one basic block.
3132 if (Lex.getKind() == lltok::rbrace)
3133 return TokError("function body requires at least one basic block");
3135 while (Lex.getKind() != lltok::rbrace)
3136 if (ParseBasicBlock(PFS)) return true;
3141 // Verify function is ok.
3142 return PFS.FinishFunction();
3146 /// ::= LabelStr? Instruction*
3147 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3148 // If this basic block starts out with a name, remember it.
3150 LocTy NameLoc = Lex.getLoc();
3151 if (Lex.getKind() == lltok::LabelStr) {
3152 Name = Lex.getStrVal();
3156 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3157 if (BB == 0) return true;
3159 std::string NameStr;
3161 // Parse the instructions in this block until we get a terminator.
3163 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3165 // This instruction may have three possibilities for a name: a) none
3166 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3167 LocTy NameLoc = Lex.getLoc();
3171 if (Lex.getKind() == lltok::LocalVarID) {
3172 NameID = Lex.getUIntVal();
3174 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3176 } else if (Lex.getKind() == lltok::LocalVar) {
3177 NameStr = Lex.getStrVal();
3179 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3183 switch (ParseInstruction(Inst, BB, PFS)) {
3184 default: llvm_unreachable("Unknown ParseInstruction result!");
3185 case InstError: return true;
3187 BB->getInstList().push_back(Inst);
3189 // With a normal result, we check to see if the instruction is followed by
3190 // a comma and metadata.
3191 if (EatIfPresent(lltok::comma))
3192 if (ParseInstructionMetadata(Inst, &PFS))
3195 case InstExtraComma:
3196 BB->getInstList().push_back(Inst);
3198 // If the instruction parser ate an extra comma at the end of it, it
3199 // *must* be followed by metadata.
3200 if (ParseInstructionMetadata(Inst, &PFS))
3205 // Set the name on the instruction.
3206 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3207 } while (!isa<TerminatorInst>(Inst));
3212 //===----------------------------------------------------------------------===//
3213 // Instruction Parsing.
3214 //===----------------------------------------------------------------------===//
3216 /// ParseInstruction - Parse one of the many different instructions.
3218 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3219 PerFunctionState &PFS) {
3220 lltok::Kind Token = Lex.getKind();
3221 if (Token == lltok::Eof)
3222 return TokError("found end of file when expecting more instructions");
3223 LocTy Loc = Lex.getLoc();
3224 unsigned KeywordVal = Lex.getUIntVal();
3225 Lex.Lex(); // Eat the keyword.
3228 default: return Error(Loc, "expected instruction opcode");
3229 // Terminator Instructions.
3230 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3231 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3232 case lltok::kw_br: return ParseBr(Inst, PFS);
3233 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3234 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3235 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3236 case lltok::kw_resume: return ParseResume(Inst, PFS);
3237 // Binary Operators.
3241 case lltok::kw_shl: {
3242 bool NUW = EatIfPresent(lltok::kw_nuw);
3243 bool NSW = EatIfPresent(lltok::kw_nsw);
3244 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3246 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3248 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3249 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3252 case lltok::kw_fadd:
3253 case lltok::kw_fsub:
3254 case lltok::kw_fmul:
3255 case lltok::kw_fdiv:
3256 case lltok::kw_frem: {
3257 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3258 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3262 Inst->setFastMathFlags(FMF);
3266 case lltok::kw_sdiv:
3267 case lltok::kw_udiv:
3268 case lltok::kw_lshr:
3269 case lltok::kw_ashr: {
3270 bool Exact = EatIfPresent(lltok::kw_exact);
3272 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3273 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3277 case lltok::kw_urem:
3278 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3281 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3282 case lltok::kw_icmp:
3283 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3285 case lltok::kw_trunc:
3286 case lltok::kw_zext:
3287 case lltok::kw_sext:
3288 case lltok::kw_fptrunc:
3289 case lltok::kw_fpext:
3290 case lltok::kw_bitcast:
3291 case lltok::kw_uitofp:
3292 case lltok::kw_sitofp:
3293 case lltok::kw_fptoui:
3294 case lltok::kw_fptosi:
3295 case lltok::kw_inttoptr:
3296 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3298 case lltok::kw_select: return ParseSelect(Inst, PFS);
3299 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3300 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3301 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3302 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3303 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3304 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3305 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3306 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3308 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3309 case lltok::kw_load: return ParseLoad(Inst, PFS);
3310 case lltok::kw_store: return ParseStore(Inst, PFS);
3311 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3312 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3313 case lltok::kw_fence: return ParseFence(Inst, PFS);
3314 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3315 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3316 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3320 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3321 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3322 if (Opc == Instruction::FCmp) {
3323 switch (Lex.getKind()) {
3324 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3325 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3326 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3327 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3328 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3329 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3330 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3331 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3332 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3333 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3334 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3335 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3336 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3337 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3338 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3339 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3340 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3343 switch (Lex.getKind()) {
3344 default: return TokError("expected icmp predicate (e.g. 'eq')");
3345 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3346 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3347 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3348 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3349 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3350 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3351 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3352 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3353 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3354 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3361 //===----------------------------------------------------------------------===//
3362 // Terminator Instructions.
3363 //===----------------------------------------------------------------------===//
3365 /// ParseRet - Parse a return instruction.
3366 /// ::= 'ret' void (',' !dbg, !1)*
3367 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3368 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3369 PerFunctionState &PFS) {
3370 SMLoc TypeLoc = Lex.getLoc();
3372 if (ParseType(Ty, true /*void allowed*/)) return true;
3374 Type *ResType = PFS.getFunction().getReturnType();
3376 if (Ty->isVoidTy()) {
3377 if (!ResType->isVoidTy())
3378 return Error(TypeLoc, "value doesn't match function result type '" +
3379 getTypeString(ResType) + "'");
3381 Inst = ReturnInst::Create(Context);
3386 if (ParseValue(Ty, RV, PFS)) return true;
3388 if (ResType != RV->getType())
3389 return Error(TypeLoc, "value doesn't match function result type '" +
3390 getTypeString(ResType) + "'");
3392 Inst = ReturnInst::Create(Context, RV);
3398 /// ::= 'br' TypeAndValue
3399 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3400 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3403 BasicBlock *Op1, *Op2;
3404 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3406 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3407 Inst = BranchInst::Create(BB);
3411 if (Op0->getType() != Type::getInt1Ty(Context))
3412 return Error(Loc, "branch condition must have 'i1' type");
3414 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3415 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3416 ParseToken(lltok::comma, "expected ',' after true destination") ||
3417 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3420 Inst = BranchInst::Create(Op1, Op2, Op0);
3426 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3428 /// ::= (TypeAndValue ',' TypeAndValue)*
3429 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3430 LocTy CondLoc, BBLoc;
3432 BasicBlock *DefaultBB;
3433 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3434 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3435 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3436 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3439 if (!Cond->getType()->isIntegerTy())
3440 return Error(CondLoc, "switch condition must have integer type");
3442 // Parse the jump table pairs.
3443 SmallPtrSet<Value*, 32> SeenCases;
3444 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3445 while (Lex.getKind() != lltok::rsquare) {
3449 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3450 ParseToken(lltok::comma, "expected ',' after case value") ||
3451 ParseTypeAndBasicBlock(DestBB, PFS))
3454 if (!SeenCases.insert(Constant))
3455 return Error(CondLoc, "duplicate case value in switch");
3456 if (!isa<ConstantInt>(Constant))
3457 return Error(CondLoc, "case value is not a constant integer");
3459 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3462 Lex.Lex(); // Eat the ']'.
3464 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3465 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3466 SI->addCase(Table[i].first, Table[i].second);
3473 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3474 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3477 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3478 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3479 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3482 if (!Address->getType()->isPointerTy())
3483 return Error(AddrLoc, "indirectbr address must have pointer type");
3485 // Parse the destination list.
3486 SmallVector<BasicBlock*, 16> DestList;
3488 if (Lex.getKind() != lltok::rsquare) {
3490 if (ParseTypeAndBasicBlock(DestBB, PFS))
3492 DestList.push_back(DestBB);
3494 while (EatIfPresent(lltok::comma)) {
3495 if (ParseTypeAndBasicBlock(DestBB, PFS))
3497 DestList.push_back(DestBB);
3501 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3504 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3505 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3506 IBI->addDestination(DestList[i]);
3513 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3514 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3515 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3516 LocTy CallLoc = Lex.getLoc();
3517 AttrBuilder RetAttrs, FnAttrs;
3518 std::vector<unsigned> FwdRefAttrGrps;
3524 SmallVector<ParamInfo, 16> ArgList;
3526 BasicBlock *NormalBB, *UnwindBB;
3527 if (ParseOptionalCallingConv(CC) ||
3528 ParseOptionalReturnAttrs(RetAttrs) ||
3529 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3530 ParseValID(CalleeID) ||
3531 ParseParameterList(ArgList, PFS) ||
3532 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3534 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3535 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3536 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3537 ParseTypeAndBasicBlock(UnwindBB, PFS))
3540 // If RetType is a non-function pointer type, then this is the short syntax
3541 // for the call, which means that RetType is just the return type. Infer the
3542 // rest of the function argument types from the arguments that are present.
3543 PointerType *PFTy = 0;
3544 FunctionType *Ty = 0;
3545 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3546 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3547 // Pull out the types of all of the arguments...
3548 std::vector<Type*> ParamTypes;
3549 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3550 ParamTypes.push_back(ArgList[i].V->getType());
3552 if (!FunctionType::isValidReturnType(RetType))
3553 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3555 Ty = FunctionType::get(RetType, ParamTypes, false);
3556 PFTy = PointerType::getUnqual(Ty);
3559 // Look up the callee.
3561 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3563 // Set up the Attribute for the function.
3564 SmallVector<AttributeSet, 8> Attrs;
3565 if (RetAttrs.hasAttributes())
3566 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3567 AttributeSet::ReturnIndex,
3570 SmallVector<Value*, 8> Args;
3572 // Loop through FunctionType's arguments and ensure they are specified
3573 // correctly. Also, gather any parameter attributes.
3574 FunctionType::param_iterator I = Ty->param_begin();
3575 FunctionType::param_iterator E = Ty->param_end();
3576 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3577 Type *ExpectedTy = 0;
3580 } else if (!Ty->isVarArg()) {
3581 return Error(ArgList[i].Loc, "too many arguments specified");
3584 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3585 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3586 getTypeString(ExpectedTy) + "'");
3587 Args.push_back(ArgList[i].V);
3588 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3589 AttrBuilder B(ArgList[i].Attrs, i + 1);
3590 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3595 return Error(CallLoc, "not enough parameters specified for call");
3597 if (FnAttrs.hasAttributes())
3598 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3599 AttributeSet::FunctionIndex,
3602 // Finish off the Attribute and check them
3603 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3605 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3606 II->setCallingConv(CC);
3607 II->setAttributes(PAL);
3608 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3614 /// ::= 'resume' TypeAndValue
3615 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3616 Value *Exn; LocTy ExnLoc;
3617 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3620 ResumeInst *RI = ResumeInst::Create(Exn);
3625 //===----------------------------------------------------------------------===//
3626 // Binary Operators.
3627 //===----------------------------------------------------------------------===//
3630 /// ::= ArithmeticOps TypeAndValue ',' Value
3632 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3633 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3634 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3635 unsigned Opc, unsigned OperandType) {
3636 LocTy Loc; Value *LHS, *RHS;
3637 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3638 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3639 ParseValue(LHS->getType(), RHS, PFS))
3643 switch (OperandType) {
3644 default: llvm_unreachable("Unknown operand type!");
3645 case 0: // int or FP.
3646 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3647 LHS->getType()->isFPOrFPVectorTy();
3649 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3650 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3654 return Error(Loc, "invalid operand type for instruction");
3656 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3661 /// ::= ArithmeticOps TypeAndValue ',' Value {
3662 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3664 LocTy Loc; Value *LHS, *RHS;
3665 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3666 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3667 ParseValue(LHS->getType(), RHS, PFS))
3670 if (!LHS->getType()->isIntOrIntVectorTy())
3671 return Error(Loc,"instruction requires integer or integer vector operands");
3673 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3679 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3680 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3681 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3683 // Parse the integer/fp comparison predicate.
3687 if (ParseCmpPredicate(Pred, Opc) ||
3688 ParseTypeAndValue(LHS, Loc, PFS) ||
3689 ParseToken(lltok::comma, "expected ',' after compare value") ||
3690 ParseValue(LHS->getType(), RHS, PFS))
3693 if (Opc == Instruction::FCmp) {
3694 if (!LHS->getType()->isFPOrFPVectorTy())
3695 return Error(Loc, "fcmp requires floating point operands");
3696 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3698 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3699 if (!LHS->getType()->isIntOrIntVectorTy() &&
3700 !LHS->getType()->getScalarType()->isPointerTy())
3701 return Error(Loc, "icmp requires integer operands");
3702 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3707 //===----------------------------------------------------------------------===//
3708 // Other Instructions.
3709 //===----------------------------------------------------------------------===//
3713 /// ::= CastOpc TypeAndValue 'to' Type
3714 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3719 if (ParseTypeAndValue(Op, Loc, PFS) ||
3720 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3724 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3725 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3726 return Error(Loc, "invalid cast opcode for cast from '" +
3727 getTypeString(Op->getType()) + "' to '" +
3728 getTypeString(DestTy) + "'");
3730 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3735 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3736 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3738 Value *Op0, *Op1, *Op2;
3739 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3740 ParseToken(lltok::comma, "expected ',' after select condition") ||
3741 ParseTypeAndValue(Op1, PFS) ||
3742 ParseToken(lltok::comma, "expected ',' after select value") ||
3743 ParseTypeAndValue(Op2, PFS))
3746 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3747 return Error(Loc, Reason);
3749 Inst = SelectInst::Create(Op0, Op1, Op2);
3754 /// ::= 'va_arg' TypeAndValue ',' Type
3755 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3759 if (ParseTypeAndValue(Op, PFS) ||
3760 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3761 ParseType(EltTy, TypeLoc))
3764 if (!EltTy->isFirstClassType())
3765 return Error(TypeLoc, "va_arg requires operand with first class type");
3767 Inst = new VAArgInst(Op, EltTy);
3771 /// ParseExtractElement
3772 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3773 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3776 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3777 ParseToken(lltok::comma, "expected ',' after extract value") ||
3778 ParseTypeAndValue(Op1, PFS))
3781 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3782 return Error(Loc, "invalid extractelement operands");
3784 Inst = ExtractElementInst::Create(Op0, Op1);
3788 /// ParseInsertElement
3789 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3790 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3792 Value *Op0, *Op1, *Op2;
3793 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3794 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3795 ParseTypeAndValue(Op1, PFS) ||
3796 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3797 ParseTypeAndValue(Op2, PFS))
3800 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3801 return Error(Loc, "invalid insertelement operands");
3803 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3807 /// ParseShuffleVector
3808 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3809 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3811 Value *Op0, *Op1, *Op2;
3812 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3813 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3814 ParseTypeAndValue(Op1, PFS) ||
3815 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3816 ParseTypeAndValue(Op2, PFS))
3819 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3820 return Error(Loc, "invalid shufflevector operands");
3822 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3827 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3828 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3829 Type *Ty = 0; LocTy TypeLoc;
3832 if (ParseType(Ty, TypeLoc) ||
3833 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3834 ParseValue(Ty, Op0, PFS) ||
3835 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3836 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3837 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3840 bool AteExtraComma = false;
3841 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3843 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3845 if (!EatIfPresent(lltok::comma))
3848 if (Lex.getKind() == lltok::MetadataVar) {
3849 AteExtraComma = true;
3853 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3854 ParseValue(Ty, Op0, PFS) ||
3855 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3856 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3857 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3861 if (!Ty->isFirstClassType())
3862 return Error(TypeLoc, "phi node must have first class type");
3864 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3865 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3866 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3868 return AteExtraComma ? InstExtraComma : InstNormal;
3872 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3874 /// ::= 'catch' TypeAndValue
3876 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3877 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3878 Type *Ty = 0; LocTy TyLoc;
3879 Value *PersFn; LocTy PersFnLoc;
3881 if (ParseType(Ty, TyLoc) ||
3882 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3883 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3886 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3887 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3889 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3890 LandingPadInst::ClauseType CT;
3891 if (EatIfPresent(lltok::kw_catch))
3892 CT = LandingPadInst::Catch;
3893 else if (EatIfPresent(lltok::kw_filter))
3894 CT = LandingPadInst::Filter;
3896 return TokError("expected 'catch' or 'filter' clause type");
3898 Value *V; LocTy VLoc;
3899 if (ParseTypeAndValue(V, VLoc, PFS)) {
3904 // A 'catch' type expects a non-array constant. A filter clause expects an
3906 if (CT == LandingPadInst::Catch) {
3907 if (isa<ArrayType>(V->getType()))
3908 Error(VLoc, "'catch' clause has an invalid type");
3910 if (!isa<ArrayType>(V->getType()))
3911 Error(VLoc, "'filter' clause has an invalid type");
3922 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3923 /// ParameterList OptionalAttrs
3924 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3926 AttrBuilder RetAttrs, FnAttrs;
3927 std::vector<unsigned> FwdRefAttrGrps;
3933 SmallVector<ParamInfo, 16> ArgList;
3934 LocTy CallLoc = Lex.getLoc();
3936 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3937 ParseOptionalCallingConv(CC) ||
3938 ParseOptionalReturnAttrs(RetAttrs) ||
3939 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3940 ParseValID(CalleeID) ||
3941 ParseParameterList(ArgList, PFS) ||
3942 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3946 // If RetType is a non-function pointer type, then this is the short syntax
3947 // for the call, which means that RetType is just the return type. Infer the
3948 // rest of the function argument types from the arguments that are present.
3949 PointerType *PFTy = 0;
3950 FunctionType *Ty = 0;
3951 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3952 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3953 // Pull out the types of all of the arguments...
3954 std::vector<Type*> ParamTypes;
3955 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3956 ParamTypes.push_back(ArgList[i].V->getType());
3958 if (!FunctionType::isValidReturnType(RetType))
3959 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3961 Ty = FunctionType::get(RetType, ParamTypes, false);
3962 PFTy = PointerType::getUnqual(Ty);
3965 // Look up the callee.
3967 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3969 // Set up the Attribute for the function.
3970 SmallVector<AttributeSet, 8> Attrs;
3971 if (RetAttrs.hasAttributes())
3972 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3973 AttributeSet::ReturnIndex,
3976 SmallVector<Value*, 8> Args;
3978 // Loop through FunctionType's arguments and ensure they are specified
3979 // correctly. Also, gather any parameter attributes.
3980 FunctionType::param_iterator I = Ty->param_begin();
3981 FunctionType::param_iterator E = Ty->param_end();
3982 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3983 Type *ExpectedTy = 0;
3986 } else if (!Ty->isVarArg()) {
3987 return Error(ArgList[i].Loc, "too many arguments specified");
3990 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3991 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3992 getTypeString(ExpectedTy) + "'");
3993 Args.push_back(ArgList[i].V);
3994 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3995 AttrBuilder B(ArgList[i].Attrs, i + 1);
3996 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4001 return Error(CallLoc, "not enough parameters specified for call");
4003 if (FnAttrs.hasAttributes())
4004 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4005 AttributeSet::FunctionIndex,
4008 // Finish off the Attribute and check them
4009 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4011 CallInst *CI = CallInst::Create(Callee, Args);
4012 CI->setTailCall(isTail);
4013 CI->setCallingConv(CC);
4014 CI->setAttributes(PAL);
4015 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4020 //===----------------------------------------------------------------------===//
4021 // Memory Instructions.
4022 //===----------------------------------------------------------------------===//
4025 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4026 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4029 unsigned Alignment = 0;
4031 if (ParseType(Ty)) return true;
4033 bool AteExtraComma = false;
4034 if (EatIfPresent(lltok::comma)) {
4035 if (Lex.getKind() == lltok::kw_align) {
4036 if (ParseOptionalAlignment(Alignment)) return true;
4037 } else if (Lex.getKind() == lltok::MetadataVar) {
4038 AteExtraComma = true;
4040 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4041 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4046 if (Size && !Size->getType()->isIntegerTy())
4047 return Error(SizeLoc, "element count must have integer type");
4049 Inst = new AllocaInst(Ty, Size, Alignment);
4050 return AteExtraComma ? InstExtraComma : InstNormal;
4054 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4055 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4056 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4057 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4058 Value *Val; LocTy Loc;
4059 unsigned Alignment = 0;
4060 bool AteExtraComma = false;
4061 bool isAtomic = false;
4062 AtomicOrdering Ordering = NotAtomic;
4063 SynchronizationScope Scope = CrossThread;
4065 if (Lex.getKind() == lltok::kw_atomic) {
4070 bool isVolatile = false;
4071 if (Lex.getKind() == lltok::kw_volatile) {
4076 if (ParseTypeAndValue(Val, Loc, PFS) ||
4077 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4078 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4081 if (!Val->getType()->isPointerTy() ||
4082 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4083 return Error(Loc, "load operand must be a pointer to a first class type");
4084 if (isAtomic && !Alignment)
4085 return Error(Loc, "atomic load must have explicit non-zero alignment");
4086 if (Ordering == Release || Ordering == AcquireRelease)
4087 return Error(Loc, "atomic load cannot use Release ordering");
4089 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4090 return AteExtraComma ? InstExtraComma : InstNormal;
4095 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4096 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4097 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4098 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4099 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4100 unsigned Alignment = 0;
4101 bool AteExtraComma = false;
4102 bool isAtomic = false;
4103 AtomicOrdering Ordering = NotAtomic;
4104 SynchronizationScope Scope = CrossThread;
4106 if (Lex.getKind() == lltok::kw_atomic) {
4111 bool isVolatile = false;
4112 if (Lex.getKind() == lltok::kw_volatile) {
4117 if (ParseTypeAndValue(Val, Loc, PFS) ||
4118 ParseToken(lltok::comma, "expected ',' after store operand") ||
4119 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4120 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4121 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4124 if (!Ptr->getType()->isPointerTy())
4125 return Error(PtrLoc, "store operand must be a pointer");
4126 if (!Val->getType()->isFirstClassType())
4127 return Error(Loc, "store operand must be a first class value");
4128 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4129 return Error(Loc, "stored value and pointer type do not match");
4130 if (isAtomic && !Alignment)
4131 return Error(Loc, "atomic store must have explicit non-zero alignment");
4132 if (Ordering == Acquire || Ordering == AcquireRelease)
4133 return Error(Loc, "atomic store cannot use Acquire ordering");
4135 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4136 return AteExtraComma ? InstExtraComma : InstNormal;
4140 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4141 /// 'singlethread'? AtomicOrdering
4142 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4143 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4144 bool AteExtraComma = false;
4145 AtomicOrdering Ordering = NotAtomic;
4146 SynchronizationScope Scope = CrossThread;
4147 bool isVolatile = false;
4149 if (EatIfPresent(lltok::kw_volatile))
4152 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4153 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4154 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4155 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4156 ParseTypeAndValue(New, NewLoc, PFS) ||
4157 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4160 if (Ordering == Unordered)
4161 return TokError("cmpxchg cannot be unordered");
4162 if (!Ptr->getType()->isPointerTy())
4163 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4164 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4165 return Error(CmpLoc, "compare value and pointer type do not match");
4166 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4167 return Error(NewLoc, "new value and pointer type do not match");
4168 if (!New->getType()->isIntegerTy())
4169 return Error(NewLoc, "cmpxchg operand must be an integer");
4170 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4171 if (Size < 8 || (Size & (Size - 1)))
4172 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4175 AtomicCmpXchgInst *CXI =
4176 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4177 CXI->setVolatile(isVolatile);
4179 return AteExtraComma ? InstExtraComma : InstNormal;
4183 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4184 /// 'singlethread'? AtomicOrdering
4185 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4186 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4187 bool AteExtraComma = false;
4188 AtomicOrdering Ordering = NotAtomic;
4189 SynchronizationScope Scope = CrossThread;
4190 bool isVolatile = false;
4191 AtomicRMWInst::BinOp Operation;
4193 if (EatIfPresent(lltok::kw_volatile))
4196 switch (Lex.getKind()) {
4197 default: return TokError("expected binary operation in atomicrmw");
4198 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4199 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4200 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4201 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4202 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4203 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4204 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4205 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4206 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4207 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4208 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4210 Lex.Lex(); // Eat the operation.
4212 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4213 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4214 ParseTypeAndValue(Val, ValLoc, PFS) ||
4215 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4218 if (Ordering == Unordered)
4219 return TokError("atomicrmw cannot be unordered");
4220 if (!Ptr->getType()->isPointerTy())
4221 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4222 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4223 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4224 if (!Val->getType()->isIntegerTy())
4225 return Error(ValLoc, "atomicrmw operand must be an integer");
4226 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4227 if (Size < 8 || (Size & (Size - 1)))
4228 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4231 AtomicRMWInst *RMWI =
4232 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4233 RMWI->setVolatile(isVolatile);
4235 return AteExtraComma ? InstExtraComma : InstNormal;
4239 /// ::= 'fence' 'singlethread'? AtomicOrdering
4240 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4241 AtomicOrdering Ordering = NotAtomic;
4242 SynchronizationScope Scope = CrossThread;
4243 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4246 if (Ordering == Unordered)
4247 return TokError("fence cannot be unordered");
4248 if (Ordering == Monotonic)
4249 return TokError("fence cannot be monotonic");
4251 Inst = new FenceInst(Context, Ordering, Scope);
4255 /// ParseGetElementPtr
4256 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4257 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4262 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4264 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4266 Type *BaseType = Ptr->getType();
4267 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4268 if (!BasePointerType)
4269 return Error(Loc, "base of getelementptr must be a pointer");
4271 SmallVector<Value*, 16> Indices;
4272 bool AteExtraComma = false;
4273 while (EatIfPresent(lltok::comma)) {
4274 if (Lex.getKind() == lltok::MetadataVar) {
4275 AteExtraComma = true;
4278 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4279 if (!Val->getType()->getScalarType()->isIntegerTy())
4280 return Error(EltLoc, "getelementptr index must be an integer");
4281 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4282 return Error(EltLoc, "getelementptr index type missmatch");
4283 if (Val->getType()->isVectorTy()) {
4284 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4285 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4286 if (ValNumEl != PtrNumEl)
4287 return Error(EltLoc,
4288 "getelementptr vector index has a wrong number of elements");
4290 Indices.push_back(Val);
4293 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4294 return Error(Loc, "base element of getelementptr must be sized");
4296 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4297 return Error(Loc, "invalid getelementptr indices");
4298 Inst = GetElementPtrInst::Create(Ptr, Indices);
4300 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4301 return AteExtraComma ? InstExtraComma : InstNormal;
4304 /// ParseExtractValue
4305 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4306 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4307 Value *Val; LocTy Loc;
4308 SmallVector<unsigned, 4> Indices;
4310 if (ParseTypeAndValue(Val, Loc, PFS) ||
4311 ParseIndexList(Indices, AteExtraComma))
4314 if (!Val->getType()->isAggregateType())
4315 return Error(Loc, "extractvalue operand must be aggregate type");
4317 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4318 return Error(Loc, "invalid indices for extractvalue");
4319 Inst = ExtractValueInst::Create(Val, Indices);
4320 return AteExtraComma ? InstExtraComma : InstNormal;
4323 /// ParseInsertValue
4324 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4325 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4326 Value *Val0, *Val1; LocTy Loc0, Loc1;
4327 SmallVector<unsigned, 4> Indices;
4329 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4330 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4331 ParseTypeAndValue(Val1, Loc1, PFS) ||
4332 ParseIndexList(Indices, AteExtraComma))
4335 if (!Val0->getType()->isAggregateType())
4336 return Error(Loc0, "insertvalue operand must be aggregate type");
4338 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4339 return Error(Loc0, "invalid indices for insertvalue");
4340 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4341 return AteExtraComma ? InstExtraComma : InstNormal;
4344 //===----------------------------------------------------------------------===//
4345 // Embedded metadata.
4346 //===----------------------------------------------------------------------===//
4348 /// ParseMDNodeVector
4349 /// ::= Element (',' Element)*
4351 /// ::= 'null' | TypeAndValue
4352 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4353 PerFunctionState *PFS) {
4354 // Check for an empty list.
4355 if (Lex.getKind() == lltok::rbrace)
4359 // Null is a special case since it is typeless.
4360 if (EatIfPresent(lltok::kw_null)) {
4366 if (ParseTypeAndValue(V, PFS)) return true;
4368 } while (EatIfPresent(lltok::comma));