1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/Module.h"
23 #include "llvm/IR/Operator.h"
24 #include "llvm/IR/ValueSymbolTable.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
68 // Handle any function attribute group forward references.
69 for (std::map<Value*, std::vector<unsigned> >::iterator
70 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
73 std::vector<unsigned> &Vec = I->second;
76 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
78 B.merge(NumberedAttrBuilders[*VI]);
80 if (Function *Fn = dyn_cast<Function>(V)) {
81 AttributeSet AS = Fn->getAttributes();
82 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
83 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
84 AS.getFnAttributes());
88 // If the alignment was parsed as an attribute, move to the alignment
90 if (FnAttrs.hasAlignmentAttr()) {
91 Fn->setAlignment(FnAttrs.getAlignment());
92 FnAttrs.removeAttribute(Attribute::Alignment);
95 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
96 AttributeSet::get(Context,
97 AttributeSet::FunctionIndex,
99 Fn->setAttributes(AS);
100 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
101 AttributeSet AS = CI->getAttributes();
102 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
103 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
104 AS.getFnAttributes());
106 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
107 AttributeSet::get(Context,
108 AttributeSet::FunctionIndex,
110 CI->setAttributes(AS);
111 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
112 AttributeSet AS = II->getAttributes();
113 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
114 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
115 AS.getFnAttributes());
117 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
118 AttributeSet::get(Context,
119 AttributeSet::FunctionIndex,
121 II->setAttributes(AS);
123 llvm_unreachable("invalid object with forward attribute group reference");
127 // If there are entries in ForwardRefBlockAddresses at this point, they are
128 // references after the function was defined. Resolve those now.
129 while (!ForwardRefBlockAddresses.empty()) {
130 // Okay, we are referencing an already-parsed function, resolve them now.
132 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
133 if (Fn.Kind == ValID::t_GlobalName)
134 TheFn = M->getFunction(Fn.StrVal);
135 else if (Fn.UIntVal < NumberedVals.size())
136 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
139 return Error(Fn.Loc, "unknown function referenced by blockaddress");
141 // Resolve all these references.
142 if (ResolveForwardRefBlockAddresses(TheFn,
143 ForwardRefBlockAddresses.begin()->second,
147 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
150 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
151 if (NumberedTypes[i].second.isValid())
152 return Error(NumberedTypes[i].second,
153 "use of undefined type '%" + Twine(i) + "'");
155 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
156 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
157 if (I->second.second.isValid())
158 return Error(I->second.second,
159 "use of undefined type named '" + I->getKey() + "'");
161 if (!ForwardRefVals.empty())
162 return Error(ForwardRefVals.begin()->second.second,
163 "use of undefined value '@" + ForwardRefVals.begin()->first +
166 if (!ForwardRefValIDs.empty())
167 return Error(ForwardRefValIDs.begin()->second.second,
168 "use of undefined value '@" +
169 Twine(ForwardRefValIDs.begin()->first) + "'");
171 if (!ForwardRefMDNodes.empty())
172 return Error(ForwardRefMDNodes.begin()->second.second,
173 "use of undefined metadata '!" +
174 Twine(ForwardRefMDNodes.begin()->first) + "'");
177 // Look for intrinsic functions and CallInst that need to be upgraded
178 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
179 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
184 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
185 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
186 PerFunctionState *PFS) {
187 // Loop over all the references, resolving them.
188 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
191 if (Refs[i].first.Kind == ValID::t_LocalName)
192 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
194 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
195 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
196 return Error(Refs[i].first.Loc,
197 "cannot take address of numeric label after the function is defined");
199 Res = dyn_cast_or_null<BasicBlock>(
200 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
204 return Error(Refs[i].first.Loc,
205 "referenced value is not a basic block");
207 // Get the BlockAddress for this and update references to use it.
208 BlockAddress *BA = BlockAddress::get(TheFn, Res);
209 Refs[i].second->replaceAllUsesWith(BA);
210 Refs[i].second->eraseFromParent();
216 //===----------------------------------------------------------------------===//
217 // Top-Level Entities
218 //===----------------------------------------------------------------------===//
220 bool LLParser::ParseTopLevelEntities() {
222 switch (Lex.getKind()) {
223 default: return TokError("expected top-level entity");
224 case lltok::Eof: return false;
225 case lltok::kw_declare: if (ParseDeclare()) return true; break;
226 case lltok::kw_define: if (ParseDefine()) return true; break;
227 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
228 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
229 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
230 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
231 case lltok::LocalVar: if (ParseNamedType()) return true; break;
232 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
233 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
234 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
235 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
237 // The Global variable production with no name can have many different
238 // optional leading prefixes, the production is:
239 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
240 // OptionalAddrSpace OptionalUnNammedAddr
241 // ('constant'|'global') ...
242 case lltok::kw_private: // OptionalLinkage
243 case lltok::kw_linker_private: // OptionalLinkage
244 case lltok::kw_linker_private_weak: // OptionalLinkage
245 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
246 case lltok::kw_internal: // OptionalLinkage
247 case lltok::kw_weak: // OptionalLinkage
248 case lltok::kw_weak_odr: // OptionalLinkage
249 case lltok::kw_linkonce: // OptionalLinkage
250 case lltok::kw_linkonce_odr: // OptionalLinkage
251 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
252 case lltok::kw_appending: // OptionalLinkage
253 case lltok::kw_dllexport: // OptionalLinkage
254 case lltok::kw_common: // OptionalLinkage
255 case lltok::kw_dllimport: // OptionalLinkage
256 case lltok::kw_extern_weak: // OptionalLinkage
257 case lltok::kw_external: { // OptionalLinkage
258 unsigned Linkage, Visibility;
259 if (ParseOptionalLinkage(Linkage) ||
260 ParseOptionalVisibility(Visibility) ||
261 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
265 case lltok::kw_default: // OptionalVisibility
266 case lltok::kw_hidden: // OptionalVisibility
267 case lltok::kw_protected: { // OptionalVisibility
269 if (ParseOptionalVisibility(Visibility) ||
270 ParseGlobal("", SMLoc(), 0, false, Visibility))
275 case lltok::kw_thread_local: // OptionalThreadLocal
276 case lltok::kw_addrspace: // OptionalAddrSpace
277 case lltok::kw_constant: // GlobalType
278 case lltok::kw_global: // GlobalType
279 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
282 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
289 /// ::= 'module' 'asm' STRINGCONSTANT
290 bool LLParser::ParseModuleAsm() {
291 assert(Lex.getKind() == lltok::kw_module);
295 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
296 ParseStringConstant(AsmStr)) return true;
298 M->appendModuleInlineAsm(AsmStr);
303 /// ::= 'target' 'triple' '=' STRINGCONSTANT
304 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
305 bool LLParser::ParseTargetDefinition() {
306 assert(Lex.getKind() == lltok::kw_target);
309 default: return TokError("unknown target property");
310 case lltok::kw_triple:
312 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
313 ParseStringConstant(Str))
315 M->setTargetTriple(Str);
317 case lltok::kw_datalayout:
319 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
320 ParseStringConstant(Str))
322 M->setDataLayout(Str);
328 /// ::= 'deplibs' '=' '[' ']'
329 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
330 /// FIXME: Remove in 4.0. Currently parse, but ignore.
331 bool LLParser::ParseDepLibs() {
332 assert(Lex.getKind() == lltok::kw_deplibs);
334 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
335 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
338 if (EatIfPresent(lltok::rsquare))
343 if (ParseStringConstant(Str)) return true;
344 } while (EatIfPresent(lltok::comma));
346 return ParseToken(lltok::rsquare, "expected ']' at end of list");
349 /// ParseUnnamedType:
350 /// ::= LocalVarID '=' 'type' type
351 bool LLParser::ParseUnnamedType() {
352 LocTy TypeLoc = Lex.getLoc();
353 unsigned TypeID = Lex.getUIntVal();
354 Lex.Lex(); // eat LocalVarID;
356 if (ParseToken(lltok::equal, "expected '=' after name") ||
357 ParseToken(lltok::kw_type, "expected 'type' after '='"))
360 if (TypeID >= NumberedTypes.size())
361 NumberedTypes.resize(TypeID+1);
364 if (ParseStructDefinition(TypeLoc, "",
365 NumberedTypes[TypeID], Result)) return true;
367 if (!isa<StructType>(Result)) {
368 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
370 return Error(TypeLoc, "non-struct types may not be recursive");
371 Entry.first = Result;
372 Entry.second = SMLoc();
380 /// ::= LocalVar '=' 'type' type
381 bool LLParser::ParseNamedType() {
382 std::string Name = Lex.getStrVal();
383 LocTy NameLoc = Lex.getLoc();
384 Lex.Lex(); // eat LocalVar.
386 if (ParseToken(lltok::equal, "expected '=' after name") ||
387 ParseToken(lltok::kw_type, "expected 'type' after name"))
391 if (ParseStructDefinition(NameLoc, Name,
392 NamedTypes[Name], Result)) return true;
394 if (!isa<StructType>(Result)) {
395 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
397 return Error(NameLoc, "non-struct types may not be recursive");
398 Entry.first = Result;
399 Entry.second = SMLoc();
407 /// ::= 'declare' FunctionHeader
408 bool LLParser::ParseDeclare() {
409 assert(Lex.getKind() == lltok::kw_declare);
413 return ParseFunctionHeader(F, false);
417 /// ::= 'define' FunctionHeader '{' ...
418 bool LLParser::ParseDefine() {
419 assert(Lex.getKind() == lltok::kw_define);
423 return ParseFunctionHeader(F, true) ||
424 ParseFunctionBody(*F);
430 bool LLParser::ParseGlobalType(bool &IsConstant) {
431 if (Lex.getKind() == lltok::kw_constant)
433 else if (Lex.getKind() == lltok::kw_global)
437 return TokError("expected 'global' or 'constant'");
443 /// ParseUnnamedGlobal:
444 /// OptionalVisibility ALIAS ...
445 /// OptionalLinkage OptionalVisibility ... -> global variable
446 /// GlobalID '=' OptionalVisibility ALIAS ...
447 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
448 bool LLParser::ParseUnnamedGlobal() {
449 unsigned VarID = NumberedVals.size();
451 LocTy NameLoc = Lex.getLoc();
453 // Handle the GlobalID form.
454 if (Lex.getKind() == lltok::GlobalID) {
455 if (Lex.getUIntVal() != VarID)
456 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
458 Lex.Lex(); // eat GlobalID;
460 if (ParseToken(lltok::equal, "expected '=' after name"))
465 unsigned Linkage, Visibility;
466 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
467 ParseOptionalVisibility(Visibility))
470 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
471 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
472 return ParseAlias(Name, NameLoc, Visibility);
475 /// ParseNamedGlobal:
476 /// GlobalVar '=' OptionalVisibility ALIAS ...
477 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
478 bool LLParser::ParseNamedGlobal() {
479 assert(Lex.getKind() == lltok::GlobalVar);
480 LocTy NameLoc = Lex.getLoc();
481 std::string Name = Lex.getStrVal();
485 unsigned Linkage, Visibility;
486 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
487 ParseOptionalLinkage(Linkage, HasLinkage) ||
488 ParseOptionalVisibility(Visibility))
491 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
492 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
493 return ParseAlias(Name, NameLoc, Visibility);
497 // ::= '!' STRINGCONSTANT
498 bool LLParser::ParseMDString(MDString *&Result) {
500 if (ParseStringConstant(Str)) return true;
501 Result = MDString::get(Context, Str);
506 // ::= '!' MDNodeNumber
508 /// This version of ParseMDNodeID returns the slot number and null in the case
509 /// of a forward reference.
510 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
511 // !{ ..., !42, ... }
512 if (ParseUInt32(SlotNo)) return true;
514 // Check existing MDNode.
515 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
516 Result = NumberedMetadata[SlotNo];
522 bool LLParser::ParseMDNodeID(MDNode *&Result) {
523 // !{ ..., !42, ... }
525 if (ParseMDNodeID(Result, MID)) return true;
527 // If not a forward reference, just return it now.
528 if (Result) return false;
530 // Otherwise, create MDNode forward reference.
531 MDNode *FwdNode = MDNode::getTemporary(Context, None);
532 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
534 if (NumberedMetadata.size() <= MID)
535 NumberedMetadata.resize(MID+1);
536 NumberedMetadata[MID] = FwdNode;
541 /// ParseNamedMetadata:
542 /// !foo = !{ !1, !2 }
543 bool LLParser::ParseNamedMetadata() {
544 assert(Lex.getKind() == lltok::MetadataVar);
545 std::string Name = Lex.getStrVal();
548 if (ParseToken(lltok::equal, "expected '=' here") ||
549 ParseToken(lltok::exclaim, "Expected '!' here") ||
550 ParseToken(lltok::lbrace, "Expected '{' here"))
553 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
554 if (Lex.getKind() != lltok::rbrace)
556 if (ParseToken(lltok::exclaim, "Expected '!' here"))
560 if (ParseMDNodeID(N)) return true;
562 } while (EatIfPresent(lltok::comma));
564 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
579 SmallVector<Value *, 16> Elts;
580 if (ParseUInt32(MetadataID) ||
581 ParseToken(lltok::equal, "expected '=' here") ||
582 ParseType(Ty, TyLoc) ||
583 ParseToken(lltok::exclaim, "Expected '!' here") ||
584 ParseToken(lltok::lbrace, "Expected '{' here") ||
585 ParseMDNodeVector(Elts, NULL) ||
586 ParseToken(lltok::rbrace, "expected end of metadata node"))
589 MDNode *Init = MDNode::get(Context, Elts);
591 // See if this was forward referenced, if so, handle it.
592 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
593 FI = ForwardRefMDNodes.find(MetadataID);
594 if (FI != ForwardRefMDNodes.end()) {
595 MDNode *Temp = FI->second.first;
596 Temp->replaceAllUsesWith(Init);
597 MDNode::deleteTemporary(Temp);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (MetadataID >= NumberedMetadata.size())
603 NumberedMetadata.resize(MetadataID+1);
605 if (NumberedMetadata[MetadataID] != 0)
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID] = Init;
614 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
617 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
618 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
620 /// Everything through visibility has already been parsed.
622 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
623 unsigned Visibility) {
624 assert(Lex.getKind() == lltok::kw_alias);
627 LocTy LinkageLoc = Lex.getLoc();
628 if (ParseOptionalLinkage(Linkage))
631 if (Linkage != GlobalValue::ExternalLinkage &&
632 Linkage != GlobalValue::WeakAnyLinkage &&
633 Linkage != GlobalValue::WeakODRLinkage &&
634 Linkage != GlobalValue::InternalLinkage &&
635 Linkage != GlobalValue::PrivateLinkage &&
636 Linkage != GlobalValue::LinkerPrivateLinkage &&
637 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
638 return Error(LinkageLoc, "invalid linkage type for alias");
641 LocTy AliaseeLoc = Lex.getLoc();
642 if (Lex.getKind() != lltok::kw_bitcast &&
643 Lex.getKind() != lltok::kw_getelementptr) {
644 if (ParseGlobalTypeAndValue(Aliasee)) return true;
646 // The bitcast dest type is not present, it is implied by the dest type.
648 if (ParseValID(ID)) return true;
649 if (ID.Kind != ValID::t_Constant)
650 return Error(AliaseeLoc, "invalid aliasee");
651 Aliasee = ID.ConstantVal;
654 if (!Aliasee->getType()->isPointerTy())
655 return Error(AliaseeLoc, "alias must have pointer type");
657 // Okay, create the alias but do not insert it into the module yet.
658 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
659 (GlobalValue::LinkageTypes)Linkage, Name,
661 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
663 // See if this value already exists in the symbol table. If so, it is either
664 // a redefinition or a definition of a forward reference.
665 if (GlobalValue *Val = M->getNamedValue(Name)) {
666 // See if this was a redefinition. If so, there is no entry in
668 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
669 I = ForwardRefVals.find(Name);
670 if (I == ForwardRefVals.end())
671 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
673 // Otherwise, this was a definition of forward ref. Verify that types
675 if (Val->getType() != GA->getType())
676 return Error(NameLoc,
677 "forward reference and definition of alias have different types");
679 // If they agree, just RAUW the old value with the alias and remove the
681 Val->replaceAllUsesWith(GA);
682 Val->eraseFromParent();
683 ForwardRefVals.erase(I);
686 // Insert into the module, we know its name won't collide now.
687 M->getAliasList().push_back(GA);
688 assert(GA->getName() == Name && "Should not be a name conflict!");
694 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
695 /// OptionalAddrSpace OptionalUnNammedAddr
696 /// OptionalExternallyInitialized GlobalType Type Const
697 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
698 /// OptionalAddrSpace OptionalUnNammedAddr
699 /// OptionalExternallyInitialized GlobalType Type Const
701 /// Everything through visibility has been parsed already.
703 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
704 unsigned Linkage, bool HasLinkage,
705 unsigned Visibility) {
707 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
708 GlobalVariable::ThreadLocalMode TLM;
709 LocTy UnnamedAddrLoc;
710 LocTy IsExternallyInitializedLoc;
714 if (ParseOptionalThreadLocal(TLM) ||
715 ParseOptionalAddrSpace(AddrSpace) ||
716 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
718 ParseOptionalToken(lltok::kw_externally_initialized,
719 IsExternallyInitialized,
720 &IsExternallyInitializedLoc) ||
721 ParseGlobalType(IsConstant) ||
722 ParseType(Ty, TyLoc))
725 // If the linkage is specified and is external, then no initializer is
728 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
729 Linkage != GlobalValue::ExternalWeakLinkage &&
730 Linkage != GlobalValue::ExternalLinkage)) {
731 if (ParseGlobalValue(Ty, Init))
735 if (Ty->isFunctionTy() || Ty->isLabelTy())
736 return Error(TyLoc, "invalid type for global variable");
738 GlobalVariable *GV = 0;
740 // See if the global was forward referenced, if so, use the global.
742 if (GlobalValue *GVal = M->getNamedValue(Name)) {
743 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
744 return Error(NameLoc, "redefinition of global '@" + Name + "'");
745 GV = cast<GlobalVariable>(GVal);
748 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
749 I = ForwardRefValIDs.find(NumberedVals.size());
750 if (I != ForwardRefValIDs.end()) {
751 GV = cast<GlobalVariable>(I->second.first);
752 ForwardRefValIDs.erase(I);
757 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
758 Name, 0, GlobalVariable::NotThreadLocal,
761 if (GV->getType()->getElementType() != Ty)
763 "forward reference and definition of global have different types");
765 // Move the forward-reference to the correct spot in the module.
766 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
770 NumberedVals.push_back(GV);
772 // Set the parsed properties on the global.
774 GV->setInitializer(Init);
775 GV->setConstant(IsConstant);
776 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
777 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
778 GV->setExternallyInitialized(IsExternallyInitialized);
779 GV->setThreadLocalMode(TLM);
780 GV->setUnnamedAddr(UnnamedAddr);
782 // Parse attributes on the global.
783 while (Lex.getKind() == lltok::comma) {
786 if (Lex.getKind() == lltok::kw_section) {
788 GV->setSection(Lex.getStrVal());
789 if (ParseToken(lltok::StringConstant, "expected global section string"))
791 } else if (Lex.getKind() == lltok::kw_align) {
793 if (ParseOptionalAlignment(Alignment)) return true;
794 GV->setAlignment(Alignment);
796 TokError("unknown global variable property!");
803 /// ParseUnnamedAttrGrp
804 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
805 bool LLParser::ParseUnnamedAttrGrp() {
806 assert(Lex.getKind() == lltok::kw_attributes);
807 LocTy AttrGrpLoc = Lex.getLoc();
810 assert(Lex.getKind() == lltok::AttrGrpID);
811 unsigned VarID = Lex.getUIntVal();
812 std::vector<unsigned> unused;
816 if (ParseToken(lltok::equal, "expected '=' here") ||
817 ParseToken(lltok::lbrace, "expected '{' here") ||
818 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
820 ParseToken(lltok::rbrace, "expected end of attribute group"))
823 if (!NumberedAttrBuilders[VarID].hasAttributes())
824 return Error(AttrGrpLoc, "attribute group has no attributes");
829 /// ParseFnAttributeValuePairs
830 /// ::= <attr> | <attr> '=' <value>
831 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
832 std::vector<unsigned> &FwdRefAttrGrps,
833 bool inAttrGrp, LocTy &BuiltinLoc) {
834 bool HaveError = false;
839 lltok::Kind Token = Lex.getKind();
840 if (Token == lltok::kw_builtin)
841 BuiltinLoc = Lex.getLoc();
844 if (!inAttrGrp) return HaveError;
845 return Error(Lex.getLoc(), "unterminated attribute group");
850 case lltok::AttrGrpID: {
851 // Allow a function to reference an attribute group:
853 // define void @foo() #1 { ... }
857 "cannot have an attribute group reference in an attribute group");
859 unsigned AttrGrpNum = Lex.getUIntVal();
860 if (inAttrGrp) break;
862 // Save the reference to the attribute group. We'll fill it in later.
863 FwdRefAttrGrps.push_back(AttrGrpNum);
866 // Target-dependent attributes:
867 case lltok::StringConstant: {
868 std::string Attr = Lex.getStrVal();
871 if (EatIfPresent(lltok::equal) &&
872 ParseStringConstant(Val))
875 B.addAttribute(Attr, Val);
879 // Target-independent attributes:
880 case lltok::kw_align: {
881 // As a hack, we allow function alignment to be initially parsed as an
882 // attribute on a function declaration/definition or added to an attribute
883 // group and later moved to the alignment field.
887 if (ParseToken(lltok::equal, "expected '=' here") ||
888 ParseUInt32(Alignment))
891 if (ParseOptionalAlignment(Alignment))
894 B.addAlignmentAttr(Alignment);
897 case lltok::kw_alignstack: {
901 if (ParseToken(lltok::equal, "expected '=' here") ||
902 ParseUInt32(Alignment))
905 if (ParseOptionalStackAlignment(Alignment))
908 B.addStackAlignmentAttr(Alignment);
911 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
912 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
913 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
914 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
915 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
916 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
917 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
918 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
919 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
920 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
921 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
922 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
923 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
924 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
925 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
926 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
927 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
928 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
929 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
930 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
931 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
932 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
933 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
934 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
935 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
938 case lltok::kw_inreg:
939 case lltok::kw_signext:
940 case lltok::kw_zeroext:
943 "invalid use of attribute on a function");
945 case lltok::kw_byval:
947 case lltok::kw_noalias:
948 case lltok::kw_nocapture:
949 case lltok::kw_returned:
953 "invalid use of parameter-only attribute on a function");
961 //===----------------------------------------------------------------------===//
962 // GlobalValue Reference/Resolution Routines.
963 //===----------------------------------------------------------------------===//
965 /// GetGlobalVal - Get a value with the specified name or ID, creating a
966 /// forward reference record if needed. This can return null if the value
967 /// exists but does not have the right type.
968 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
970 PointerType *PTy = dyn_cast<PointerType>(Ty);
972 Error(Loc, "global variable reference must have pointer type");
976 // Look this name up in the normal function symbol table.
978 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
980 // If this is a forward reference for the value, see if we already created a
981 // forward ref record.
983 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
984 I = ForwardRefVals.find(Name);
985 if (I != ForwardRefVals.end())
986 Val = I->second.first;
989 // If we have the value in the symbol table or fwd-ref table, return it.
991 if (Val->getType() == Ty) return Val;
992 Error(Loc, "'@" + Name + "' defined with type '" +
993 getTypeString(Val->getType()) + "'");
997 // Otherwise, create a new forward reference for this value and remember it.
999 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1000 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1002 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1003 GlobalValue::ExternalWeakLinkage, 0, Name,
1004 0, GlobalVariable::NotThreadLocal,
1005 PTy->getAddressSpace());
1007 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1011 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1012 PointerType *PTy = dyn_cast<PointerType>(Ty);
1014 Error(Loc, "global variable reference must have pointer type");
1018 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1020 // If this is a forward reference for the value, see if we already created a
1021 // forward ref record.
1023 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1024 I = ForwardRefValIDs.find(ID);
1025 if (I != ForwardRefValIDs.end())
1026 Val = I->second.first;
1029 // If we have the value in the symbol table or fwd-ref table, return it.
1031 if (Val->getType() == Ty) return Val;
1032 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1033 getTypeString(Val->getType()) + "'");
1037 // Otherwise, create a new forward reference for this value and remember it.
1038 GlobalValue *FwdVal;
1039 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1040 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1042 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1043 GlobalValue::ExternalWeakLinkage, 0, "");
1045 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1050 //===----------------------------------------------------------------------===//
1052 //===----------------------------------------------------------------------===//
1054 /// ParseToken - If the current token has the specified kind, eat it and return
1055 /// success. Otherwise, emit the specified error and return failure.
1056 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1057 if (Lex.getKind() != T)
1058 return TokError(ErrMsg);
1063 /// ParseStringConstant
1064 /// ::= StringConstant
1065 bool LLParser::ParseStringConstant(std::string &Result) {
1066 if (Lex.getKind() != lltok::StringConstant)
1067 return TokError("expected string constant");
1068 Result = Lex.getStrVal();
1075 bool LLParser::ParseUInt32(unsigned &Val) {
1076 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1077 return TokError("expected integer");
1078 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1079 if (Val64 != unsigned(Val64))
1080 return TokError("expected 32-bit integer (too large)");
1087 /// := 'localdynamic'
1088 /// := 'initialexec'
1090 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1091 switch (Lex.getKind()) {
1093 return TokError("expected localdynamic, initialexec or localexec");
1094 case lltok::kw_localdynamic:
1095 TLM = GlobalVariable::LocalDynamicTLSModel;
1097 case lltok::kw_initialexec:
1098 TLM = GlobalVariable::InitialExecTLSModel;
1100 case lltok::kw_localexec:
1101 TLM = GlobalVariable::LocalExecTLSModel;
1109 /// ParseOptionalThreadLocal
1111 /// := 'thread_local'
1112 /// := 'thread_local' '(' tlsmodel ')'
1113 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1114 TLM = GlobalVariable::NotThreadLocal;
1115 if (!EatIfPresent(lltok::kw_thread_local))
1118 TLM = GlobalVariable::GeneralDynamicTLSModel;
1119 if (Lex.getKind() == lltok::lparen) {
1121 return ParseTLSModel(TLM) ||
1122 ParseToken(lltok::rparen, "expected ')' after thread local model");
1127 /// ParseOptionalAddrSpace
1129 /// := 'addrspace' '(' uint32 ')'
1130 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1132 if (!EatIfPresent(lltok::kw_addrspace))
1134 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1135 ParseUInt32(AddrSpace) ||
1136 ParseToken(lltok::rparen, "expected ')' in address space");
1139 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1140 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1141 bool HaveError = false;
1146 lltok::Kind Token = Lex.getKind();
1148 default: // End of attributes.
1150 case lltok::kw_align: {
1152 if (ParseOptionalAlignment(Alignment))
1154 B.addAlignmentAttr(Alignment);
1157 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1158 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1159 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1160 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1161 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1162 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1163 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1164 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1165 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1166 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1167 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1169 case lltok::kw_alignstack:
1170 case lltok::kw_alwaysinline:
1171 case lltok::kw_builtin:
1172 case lltok::kw_inlinehint:
1173 case lltok::kw_minsize:
1174 case lltok::kw_naked:
1175 case lltok::kw_nobuiltin:
1176 case lltok::kw_noduplicate:
1177 case lltok::kw_noimplicitfloat:
1178 case lltok::kw_noinline:
1179 case lltok::kw_nonlazybind:
1180 case lltok::kw_noredzone:
1181 case lltok::kw_noreturn:
1182 case lltok::kw_nounwind:
1183 case lltok::kw_optsize:
1184 case lltok::kw_returns_twice:
1185 case lltok::kw_sanitize_address:
1186 case lltok::kw_sanitize_memory:
1187 case lltok::kw_sanitize_thread:
1189 case lltok::kw_sspreq:
1190 case lltok::kw_sspstrong:
1191 case lltok::kw_uwtable:
1192 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1200 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1201 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1202 bool HaveError = false;
1207 lltok::Kind Token = Lex.getKind();
1209 default: // End of attributes.
1211 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1212 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1213 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1214 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1217 case lltok::kw_align:
1218 case lltok::kw_byval:
1219 case lltok::kw_nest:
1220 case lltok::kw_nocapture:
1221 case lltok::kw_returned:
1222 case lltok::kw_sret:
1223 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1226 case lltok::kw_alignstack:
1227 case lltok::kw_alwaysinline:
1228 case lltok::kw_builtin:
1229 case lltok::kw_cold:
1230 case lltok::kw_inlinehint:
1231 case lltok::kw_minsize:
1232 case lltok::kw_naked:
1233 case lltok::kw_nobuiltin:
1234 case lltok::kw_noduplicate:
1235 case lltok::kw_noimplicitfloat:
1236 case lltok::kw_noinline:
1237 case lltok::kw_nonlazybind:
1238 case lltok::kw_noredzone:
1239 case lltok::kw_noreturn:
1240 case lltok::kw_nounwind:
1241 case lltok::kw_optsize:
1242 case lltok::kw_returns_twice:
1243 case lltok::kw_sanitize_address:
1244 case lltok::kw_sanitize_memory:
1245 case lltok::kw_sanitize_thread:
1247 case lltok::kw_sspreq:
1248 case lltok::kw_sspstrong:
1249 case lltok::kw_uwtable:
1250 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1253 case lltok::kw_readnone:
1254 case lltok::kw_readonly:
1255 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1262 /// ParseOptionalLinkage
1265 /// ::= 'linker_private'
1266 /// ::= 'linker_private_weak'
1271 /// ::= 'linkonce_odr'
1272 /// ::= 'linkonce_odr_auto_hide'
1273 /// ::= 'available_externally'
1278 /// ::= 'extern_weak'
1280 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1282 switch (Lex.getKind()) {
1283 default: Res=GlobalValue::ExternalLinkage; return false;
1284 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1285 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1286 case lltok::kw_linker_private_weak:
1287 Res = GlobalValue::LinkerPrivateWeakLinkage;
1289 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1290 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1291 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1292 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1293 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1294 case lltok::kw_linkonce_odr_auto_hide:
1295 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1296 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1298 case lltok::kw_available_externally:
1299 Res = GlobalValue::AvailableExternallyLinkage;
1301 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1302 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1303 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1304 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1305 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1306 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1313 /// ParseOptionalVisibility
1319 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1320 switch (Lex.getKind()) {
1321 default: Res = GlobalValue::DefaultVisibility; return false;
1322 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1323 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1324 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1330 /// ParseOptionalCallingConv
1334 /// ::= 'kw_intel_ocl_bicc'
1336 /// ::= 'x86_stdcallcc'
1337 /// ::= 'x86_fastcallcc'
1338 /// ::= 'x86_thiscallcc'
1339 /// ::= 'arm_apcscc'
1340 /// ::= 'arm_aapcscc'
1341 /// ::= 'arm_aapcs_vfpcc'
1342 /// ::= 'msp430_intrcc'
1343 /// ::= 'ptx_kernel'
1344 /// ::= 'ptx_device'
1346 /// ::= 'spir_kernel'
1349 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1350 switch (Lex.getKind()) {
1351 default: CC = CallingConv::C; return false;
1352 case lltok::kw_ccc: CC = CallingConv::C; break;
1353 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1354 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1355 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1356 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1357 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1358 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1359 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1360 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1361 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1362 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1363 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1364 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1365 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1366 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1367 case lltok::kw_cc: {
1368 unsigned ArbitraryCC;
1370 if (ParseUInt32(ArbitraryCC))
1372 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1381 /// ParseInstructionMetadata
1382 /// ::= !dbg !42 (',' !dbg !57)*
1383 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1384 PerFunctionState *PFS) {
1386 if (Lex.getKind() != lltok::MetadataVar)
1387 return TokError("expected metadata after comma");
1389 std::string Name = Lex.getStrVal();
1390 unsigned MDK = M->getMDKindID(Name);
1394 SMLoc Loc = Lex.getLoc();
1396 if (ParseToken(lltok::exclaim, "expected '!' here"))
1399 // This code is similar to that of ParseMetadataValue, however it needs to
1400 // have special-case code for a forward reference; see the comments on
1401 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1402 // at the top level here.
1403 if (Lex.getKind() == lltok::lbrace) {
1405 if (ParseMetadataListValue(ID, PFS))
1407 assert(ID.Kind == ValID::t_MDNode);
1408 Inst->setMetadata(MDK, ID.MDNodeVal);
1410 unsigned NodeID = 0;
1411 if (ParseMDNodeID(Node, NodeID))
1414 // If we got the node, add it to the instruction.
1415 Inst->setMetadata(MDK, Node);
1417 MDRef R = { Loc, MDK, NodeID };
1418 // Otherwise, remember that this should be resolved later.
1419 ForwardRefInstMetadata[Inst].push_back(R);
1423 // If this is the end of the list, we're done.
1424 } while (EatIfPresent(lltok::comma));
1428 /// ParseOptionalAlignment
1431 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1433 if (!EatIfPresent(lltok::kw_align))
1435 LocTy AlignLoc = Lex.getLoc();
1436 if (ParseUInt32(Alignment)) return true;
1437 if (!isPowerOf2_32(Alignment))
1438 return Error(AlignLoc, "alignment is not a power of two");
1439 if (Alignment > Value::MaximumAlignment)
1440 return Error(AlignLoc, "huge alignments are not supported yet");
1444 /// ParseOptionalCommaAlign
1448 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1450 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1451 bool &AteExtraComma) {
1452 AteExtraComma = false;
1453 while (EatIfPresent(lltok::comma)) {
1454 // Metadata at the end is an early exit.
1455 if (Lex.getKind() == lltok::MetadataVar) {
1456 AteExtraComma = true;
1460 if (Lex.getKind() != lltok::kw_align)
1461 return Error(Lex.getLoc(), "expected metadata or 'align'");
1463 if (ParseOptionalAlignment(Alignment)) return true;
1469 /// ParseScopeAndOrdering
1470 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1473 /// This sets Scope and Ordering to the parsed values.
1474 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1475 AtomicOrdering &Ordering) {
1479 Scope = CrossThread;
1480 if (EatIfPresent(lltok::kw_singlethread))
1481 Scope = SingleThread;
1482 switch (Lex.getKind()) {
1483 default: return TokError("Expected ordering on atomic instruction");
1484 case lltok::kw_unordered: Ordering = Unordered; break;
1485 case lltok::kw_monotonic: Ordering = Monotonic; break;
1486 case lltok::kw_acquire: Ordering = Acquire; break;
1487 case lltok::kw_release: Ordering = Release; break;
1488 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1489 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1495 /// ParseOptionalStackAlignment
1497 /// ::= 'alignstack' '(' 4 ')'
1498 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1500 if (!EatIfPresent(lltok::kw_alignstack))
1502 LocTy ParenLoc = Lex.getLoc();
1503 if (!EatIfPresent(lltok::lparen))
1504 return Error(ParenLoc, "expected '('");
1505 LocTy AlignLoc = Lex.getLoc();
1506 if (ParseUInt32(Alignment)) return true;
1507 ParenLoc = Lex.getLoc();
1508 if (!EatIfPresent(lltok::rparen))
1509 return Error(ParenLoc, "expected ')'");
1510 if (!isPowerOf2_32(Alignment))
1511 return Error(AlignLoc, "stack alignment is not a power of two");
1515 /// ParseIndexList - This parses the index list for an insert/extractvalue
1516 /// instruction. This sets AteExtraComma in the case where we eat an extra
1517 /// comma at the end of the line and find that it is followed by metadata.
1518 /// Clients that don't allow metadata can call the version of this function that
1519 /// only takes one argument.
1522 /// ::= (',' uint32)+
1524 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1525 bool &AteExtraComma) {
1526 AteExtraComma = false;
1528 if (Lex.getKind() != lltok::comma)
1529 return TokError("expected ',' as start of index list");
1531 while (EatIfPresent(lltok::comma)) {
1532 if (Lex.getKind() == lltok::MetadataVar) {
1533 AteExtraComma = true;
1537 if (ParseUInt32(Idx)) return true;
1538 Indices.push_back(Idx);
1544 //===----------------------------------------------------------------------===//
1546 //===----------------------------------------------------------------------===//
1548 /// ParseType - Parse a type.
1549 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1550 SMLoc TypeLoc = Lex.getLoc();
1551 switch (Lex.getKind()) {
1553 return TokError("expected type");
1555 // Type ::= 'float' | 'void' (etc)
1556 Result = Lex.getTyVal();
1560 // Type ::= StructType
1561 if (ParseAnonStructType(Result, false))
1564 case lltok::lsquare:
1565 // Type ::= '[' ... ']'
1566 Lex.Lex(); // eat the lsquare.
1567 if (ParseArrayVectorType(Result, false))
1570 case lltok::less: // Either vector or packed struct.
1571 // Type ::= '<' ... '>'
1573 if (Lex.getKind() == lltok::lbrace) {
1574 if (ParseAnonStructType(Result, true) ||
1575 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1577 } else if (ParseArrayVectorType(Result, true))
1580 case lltok::LocalVar: {
1582 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1584 // If the type hasn't been defined yet, create a forward definition and
1585 // remember where that forward def'n was seen (in case it never is defined).
1586 if (Entry.first == 0) {
1587 Entry.first = StructType::create(Context, Lex.getStrVal());
1588 Entry.second = Lex.getLoc();
1590 Result = Entry.first;
1595 case lltok::LocalVarID: {
1597 if (Lex.getUIntVal() >= NumberedTypes.size())
1598 NumberedTypes.resize(Lex.getUIntVal()+1);
1599 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1601 // If the type hasn't been defined yet, create a forward definition and
1602 // remember where that forward def'n was seen (in case it never is defined).
1603 if (Entry.first == 0) {
1604 Entry.first = StructType::create(Context);
1605 Entry.second = Lex.getLoc();
1607 Result = Entry.first;
1613 // Parse the type suffixes.
1615 switch (Lex.getKind()) {
1618 if (!AllowVoid && Result->isVoidTy())
1619 return Error(TypeLoc, "void type only allowed for function results");
1622 // Type ::= Type '*'
1624 if (Result->isLabelTy())
1625 return TokError("basic block pointers are invalid");
1626 if (Result->isVoidTy())
1627 return TokError("pointers to void are invalid - use i8* instead");
1628 if (!PointerType::isValidElementType(Result))
1629 return TokError("pointer to this type is invalid");
1630 Result = PointerType::getUnqual(Result);
1634 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1635 case lltok::kw_addrspace: {
1636 if (Result->isLabelTy())
1637 return TokError("basic block pointers are invalid");
1638 if (Result->isVoidTy())
1639 return TokError("pointers to void are invalid; use i8* instead");
1640 if (!PointerType::isValidElementType(Result))
1641 return TokError("pointer to this type is invalid");
1643 if (ParseOptionalAddrSpace(AddrSpace) ||
1644 ParseToken(lltok::star, "expected '*' in address space"))
1647 Result = PointerType::get(Result, AddrSpace);
1651 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1653 if (ParseFunctionType(Result))
1660 /// ParseParameterList
1662 /// ::= '(' Arg (',' Arg)* ')'
1664 /// ::= Type OptionalAttributes Value OptionalAttributes
1665 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1666 PerFunctionState &PFS) {
1667 if (ParseToken(lltok::lparen, "expected '(' in call"))
1670 unsigned AttrIndex = 1;
1671 while (Lex.getKind() != lltok::rparen) {
1672 // If this isn't the first argument, we need a comma.
1673 if (!ArgList.empty() &&
1674 ParseToken(lltok::comma, "expected ',' in argument list"))
1677 // Parse the argument.
1680 AttrBuilder ArgAttrs;
1682 if (ParseType(ArgTy, ArgLoc))
1685 // Otherwise, handle normal operands.
1686 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1688 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1693 Lex.Lex(); // Lex the ')'.
1699 /// ParseArgumentList - Parse the argument list for a function type or function
1701 /// ::= '(' ArgTypeListI ')'
1705 /// ::= ArgTypeList ',' '...'
1706 /// ::= ArgType (',' ArgType)*
1708 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1711 assert(Lex.getKind() == lltok::lparen);
1712 Lex.Lex(); // eat the (.
1714 if (Lex.getKind() == lltok::rparen) {
1716 } else if (Lex.getKind() == lltok::dotdotdot) {
1720 LocTy TypeLoc = Lex.getLoc();
1725 if (ParseType(ArgTy) ||
1726 ParseOptionalParamAttrs(Attrs)) return true;
1728 if (ArgTy->isVoidTy())
1729 return Error(TypeLoc, "argument can not have void type");
1731 if (Lex.getKind() == lltok::LocalVar) {
1732 Name = Lex.getStrVal();
1736 if (!FunctionType::isValidArgumentType(ArgTy))
1737 return Error(TypeLoc, "invalid type for function argument");
1739 unsigned AttrIndex = 1;
1740 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1741 AttributeSet::get(ArgTy->getContext(),
1742 AttrIndex++, Attrs), Name));
1744 while (EatIfPresent(lltok::comma)) {
1745 // Handle ... at end of arg list.
1746 if (EatIfPresent(lltok::dotdotdot)) {
1751 // Otherwise must be an argument type.
1752 TypeLoc = Lex.getLoc();
1753 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1755 if (ArgTy->isVoidTy())
1756 return Error(TypeLoc, "argument can not have void type");
1758 if (Lex.getKind() == lltok::LocalVar) {
1759 Name = Lex.getStrVal();
1765 if (!ArgTy->isFirstClassType())
1766 return Error(TypeLoc, "invalid type for function argument");
1768 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1769 AttributeSet::get(ArgTy->getContext(),
1770 AttrIndex++, Attrs),
1775 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1778 /// ParseFunctionType
1779 /// ::= Type ArgumentList OptionalAttrs
1780 bool LLParser::ParseFunctionType(Type *&Result) {
1781 assert(Lex.getKind() == lltok::lparen);
1783 if (!FunctionType::isValidReturnType(Result))
1784 return TokError("invalid function return type");
1786 SmallVector<ArgInfo, 8> ArgList;
1788 if (ParseArgumentList(ArgList, isVarArg))
1791 // Reject names on the arguments lists.
1792 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1793 if (!ArgList[i].Name.empty())
1794 return Error(ArgList[i].Loc, "argument name invalid in function type");
1795 if (ArgList[i].Attrs.hasAttributes(i + 1))
1796 return Error(ArgList[i].Loc,
1797 "argument attributes invalid in function type");
1800 SmallVector<Type*, 16> ArgListTy;
1801 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1802 ArgListTy.push_back(ArgList[i].Ty);
1804 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1808 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1810 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1811 SmallVector<Type*, 8> Elts;
1812 if (ParseStructBody(Elts)) return true;
1814 Result = StructType::get(Context, Elts, Packed);
1818 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1819 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1820 std::pair<Type*, LocTy> &Entry,
1822 // If the type was already defined, diagnose the redefinition.
1823 if (Entry.first && !Entry.second.isValid())
1824 return Error(TypeLoc, "redefinition of type");
1826 // If we have opaque, just return without filling in the definition for the
1827 // struct. This counts as a definition as far as the .ll file goes.
1828 if (EatIfPresent(lltok::kw_opaque)) {
1829 // This type is being defined, so clear the location to indicate this.
1830 Entry.second = SMLoc();
1832 // If this type number has never been uttered, create it.
1833 if (Entry.first == 0)
1834 Entry.first = StructType::create(Context, Name);
1835 ResultTy = Entry.first;
1839 // If the type starts with '<', then it is either a packed struct or a vector.
1840 bool isPacked = EatIfPresent(lltok::less);
1842 // If we don't have a struct, then we have a random type alias, which we
1843 // accept for compatibility with old files. These types are not allowed to be
1844 // forward referenced and not allowed to be recursive.
1845 if (Lex.getKind() != lltok::lbrace) {
1847 return Error(TypeLoc, "forward references to non-struct type");
1851 return ParseArrayVectorType(ResultTy, true);
1852 return ParseType(ResultTy);
1855 // This type is being defined, so clear the location to indicate this.
1856 Entry.second = SMLoc();
1858 // If this type number has never been uttered, create it.
1859 if (Entry.first == 0)
1860 Entry.first = StructType::create(Context, Name);
1862 StructType *STy = cast<StructType>(Entry.first);
1864 SmallVector<Type*, 8> Body;
1865 if (ParseStructBody(Body) ||
1866 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1869 STy->setBody(Body, isPacked);
1875 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1878 /// ::= '{' Type (',' Type)* '}'
1879 /// ::= '<' '{' '}' '>'
1880 /// ::= '<' '{' Type (',' Type)* '}' '>'
1881 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1882 assert(Lex.getKind() == lltok::lbrace);
1883 Lex.Lex(); // Consume the '{'
1885 // Handle the empty struct.
1886 if (EatIfPresent(lltok::rbrace))
1889 LocTy EltTyLoc = Lex.getLoc();
1891 if (ParseType(Ty)) return true;
1894 if (!StructType::isValidElementType(Ty))
1895 return Error(EltTyLoc, "invalid element type for struct");
1897 while (EatIfPresent(lltok::comma)) {
1898 EltTyLoc = Lex.getLoc();
1899 if (ParseType(Ty)) return true;
1901 if (!StructType::isValidElementType(Ty))
1902 return Error(EltTyLoc, "invalid element type for struct");
1907 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1910 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1911 /// token has already been consumed.
1913 /// ::= '[' APSINTVAL 'x' Types ']'
1914 /// ::= '<' APSINTVAL 'x' Types '>'
1915 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1916 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1917 Lex.getAPSIntVal().getBitWidth() > 64)
1918 return TokError("expected number in address space");
1920 LocTy SizeLoc = Lex.getLoc();
1921 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1924 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1927 LocTy TypeLoc = Lex.getLoc();
1929 if (ParseType(EltTy)) return true;
1931 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1932 "expected end of sequential type"))
1937 return Error(SizeLoc, "zero element vector is illegal");
1938 if ((unsigned)Size != Size)
1939 return Error(SizeLoc, "size too large for vector");
1940 if (!VectorType::isValidElementType(EltTy))
1941 return Error(TypeLoc, "invalid vector element type");
1942 Result = VectorType::get(EltTy, unsigned(Size));
1944 if (!ArrayType::isValidElementType(EltTy))
1945 return Error(TypeLoc, "invalid array element type");
1946 Result = ArrayType::get(EltTy, Size);
1951 //===----------------------------------------------------------------------===//
1952 // Function Semantic Analysis.
1953 //===----------------------------------------------------------------------===//
1955 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1957 : P(p), F(f), FunctionNumber(functionNumber) {
1959 // Insert unnamed arguments into the NumberedVals list.
1960 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1963 NumberedVals.push_back(AI);
1966 LLParser::PerFunctionState::~PerFunctionState() {
1967 // If there were any forward referenced non-basicblock values, delete them.
1968 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1969 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1970 if (!isa<BasicBlock>(I->second.first)) {
1971 I->second.first->replaceAllUsesWith(
1972 UndefValue::get(I->second.first->getType()));
1973 delete I->second.first;
1974 I->second.first = 0;
1977 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1978 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1979 if (!isa<BasicBlock>(I->second.first)) {
1980 I->second.first->replaceAllUsesWith(
1981 UndefValue::get(I->second.first->getType()));
1982 delete I->second.first;
1983 I->second.first = 0;
1987 bool LLParser::PerFunctionState::FinishFunction() {
1988 // Check to see if someone took the address of labels in this block.
1989 if (!P.ForwardRefBlockAddresses.empty()) {
1991 if (!F.getName().empty()) {
1992 FunctionID.Kind = ValID::t_GlobalName;
1993 FunctionID.StrVal = F.getName();
1995 FunctionID.Kind = ValID::t_GlobalID;
1996 FunctionID.UIntVal = FunctionNumber;
1999 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2000 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2001 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2002 // Resolve all these references.
2003 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2006 P.ForwardRefBlockAddresses.erase(FRBAI);
2010 if (!ForwardRefVals.empty())
2011 return P.Error(ForwardRefVals.begin()->second.second,
2012 "use of undefined value '%" + ForwardRefVals.begin()->first +
2014 if (!ForwardRefValIDs.empty())
2015 return P.Error(ForwardRefValIDs.begin()->second.second,
2016 "use of undefined value '%" +
2017 Twine(ForwardRefValIDs.begin()->first) + "'");
2022 /// GetVal - Get a value with the specified name or ID, creating a
2023 /// forward reference record if needed. This can return null if the value
2024 /// exists but does not have the right type.
2025 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2026 Type *Ty, LocTy Loc) {
2027 // Look this name up in the normal function symbol table.
2028 Value *Val = F.getValueSymbolTable().lookup(Name);
2030 // If this is a forward reference for the value, see if we already created a
2031 // forward ref record.
2033 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2034 I = ForwardRefVals.find(Name);
2035 if (I != ForwardRefVals.end())
2036 Val = I->second.first;
2039 // If we have the value in the symbol table or fwd-ref table, return it.
2041 if (Val->getType() == Ty) return Val;
2042 if (Ty->isLabelTy())
2043 P.Error(Loc, "'%" + Name + "' is not a basic block");
2045 P.Error(Loc, "'%" + Name + "' defined with type '" +
2046 getTypeString(Val->getType()) + "'");
2050 // Don't make placeholders with invalid type.
2051 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2052 P.Error(Loc, "invalid use of a non-first-class type");
2056 // Otherwise, create a new forward reference for this value and remember it.
2058 if (Ty->isLabelTy())
2059 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2061 FwdVal = new Argument(Ty, Name);
2063 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2067 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2069 // Look this name up in the normal function symbol table.
2070 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2072 // If this is a forward reference for the value, see if we already created a
2073 // forward ref record.
2075 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2076 I = ForwardRefValIDs.find(ID);
2077 if (I != ForwardRefValIDs.end())
2078 Val = I->second.first;
2081 // If we have the value in the symbol table or fwd-ref table, return it.
2083 if (Val->getType() == Ty) return Val;
2084 if (Ty->isLabelTy())
2085 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2087 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2088 getTypeString(Val->getType()) + "'");
2092 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2093 P.Error(Loc, "invalid use of a non-first-class type");
2097 // Otherwise, create a new forward reference for this value and remember it.
2099 if (Ty->isLabelTy())
2100 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2102 FwdVal = new Argument(Ty);
2104 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2108 /// SetInstName - After an instruction is parsed and inserted into its
2109 /// basic block, this installs its name.
2110 bool LLParser::PerFunctionState::SetInstName(int NameID,
2111 const std::string &NameStr,
2112 LocTy NameLoc, Instruction *Inst) {
2113 // If this instruction has void type, it cannot have a name or ID specified.
2114 if (Inst->getType()->isVoidTy()) {
2115 if (NameID != -1 || !NameStr.empty())
2116 return P.Error(NameLoc, "instructions returning void cannot have a name");
2120 // If this was a numbered instruction, verify that the instruction is the
2121 // expected value and resolve any forward references.
2122 if (NameStr.empty()) {
2123 // If neither a name nor an ID was specified, just use the next ID.
2125 NameID = NumberedVals.size();
2127 if (unsigned(NameID) != NumberedVals.size())
2128 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2129 Twine(NumberedVals.size()) + "'");
2131 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2132 ForwardRefValIDs.find(NameID);
2133 if (FI != ForwardRefValIDs.end()) {
2134 if (FI->second.first->getType() != Inst->getType())
2135 return P.Error(NameLoc, "instruction forward referenced with type '" +
2136 getTypeString(FI->second.first->getType()) + "'");
2137 FI->second.first->replaceAllUsesWith(Inst);
2138 delete FI->second.first;
2139 ForwardRefValIDs.erase(FI);
2142 NumberedVals.push_back(Inst);
2146 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2147 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2148 FI = ForwardRefVals.find(NameStr);
2149 if (FI != ForwardRefVals.end()) {
2150 if (FI->second.first->getType() != Inst->getType())
2151 return P.Error(NameLoc, "instruction forward referenced with type '" +
2152 getTypeString(FI->second.first->getType()) + "'");
2153 FI->second.first->replaceAllUsesWith(Inst);
2154 delete FI->second.first;
2155 ForwardRefVals.erase(FI);
2158 // Set the name on the instruction.
2159 Inst->setName(NameStr);
2161 if (Inst->getName() != NameStr)
2162 return P.Error(NameLoc, "multiple definition of local value named '" +
2167 /// GetBB - Get a basic block with the specified name or ID, creating a
2168 /// forward reference record if needed.
2169 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2171 return cast_or_null<BasicBlock>(GetVal(Name,
2172 Type::getLabelTy(F.getContext()), Loc));
2175 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2176 return cast_or_null<BasicBlock>(GetVal(ID,
2177 Type::getLabelTy(F.getContext()), Loc));
2180 /// DefineBB - Define the specified basic block, which is either named or
2181 /// unnamed. If there is an error, this returns null otherwise it returns
2182 /// the block being defined.
2183 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2187 BB = GetBB(NumberedVals.size(), Loc);
2189 BB = GetBB(Name, Loc);
2190 if (BB == 0) return 0; // Already diagnosed error.
2192 // Move the block to the end of the function. Forward ref'd blocks are
2193 // inserted wherever they happen to be referenced.
2194 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2196 // Remove the block from forward ref sets.
2198 ForwardRefValIDs.erase(NumberedVals.size());
2199 NumberedVals.push_back(BB);
2201 // BB forward references are already in the function symbol table.
2202 ForwardRefVals.erase(Name);
2208 //===----------------------------------------------------------------------===//
2210 //===----------------------------------------------------------------------===//
2212 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2213 /// type implied. For example, if we parse "4" we don't know what integer type
2214 /// it has. The value will later be combined with its type and checked for
2215 /// sanity. PFS is used to convert function-local operands of metadata (since
2216 /// metadata operands are not just parsed here but also converted to values).
2217 /// PFS can be null when we are not parsing metadata values inside a function.
2218 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2219 ID.Loc = Lex.getLoc();
2220 switch (Lex.getKind()) {
2221 default: return TokError("expected value token");
2222 case lltok::GlobalID: // @42
2223 ID.UIntVal = Lex.getUIntVal();
2224 ID.Kind = ValID::t_GlobalID;
2226 case lltok::GlobalVar: // @foo
2227 ID.StrVal = Lex.getStrVal();
2228 ID.Kind = ValID::t_GlobalName;
2230 case lltok::LocalVarID: // %42
2231 ID.UIntVal = Lex.getUIntVal();
2232 ID.Kind = ValID::t_LocalID;
2234 case lltok::LocalVar: // %foo
2235 ID.StrVal = Lex.getStrVal();
2236 ID.Kind = ValID::t_LocalName;
2238 case lltok::exclaim: // !42, !{...}, or !"foo"
2239 return ParseMetadataValue(ID, PFS);
2241 ID.APSIntVal = Lex.getAPSIntVal();
2242 ID.Kind = ValID::t_APSInt;
2244 case lltok::APFloat:
2245 ID.APFloatVal = Lex.getAPFloatVal();
2246 ID.Kind = ValID::t_APFloat;
2248 case lltok::kw_true:
2249 ID.ConstantVal = ConstantInt::getTrue(Context);
2250 ID.Kind = ValID::t_Constant;
2252 case lltok::kw_false:
2253 ID.ConstantVal = ConstantInt::getFalse(Context);
2254 ID.Kind = ValID::t_Constant;
2256 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2257 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2258 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2260 case lltok::lbrace: {
2261 // ValID ::= '{' ConstVector '}'
2263 SmallVector<Constant*, 16> Elts;
2264 if (ParseGlobalValueVector(Elts) ||
2265 ParseToken(lltok::rbrace, "expected end of struct constant"))
2268 ID.ConstantStructElts = new Constant*[Elts.size()];
2269 ID.UIntVal = Elts.size();
2270 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2271 ID.Kind = ValID::t_ConstantStruct;
2275 // ValID ::= '<' ConstVector '>' --> Vector.
2276 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2278 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2280 SmallVector<Constant*, 16> Elts;
2281 LocTy FirstEltLoc = Lex.getLoc();
2282 if (ParseGlobalValueVector(Elts) ||
2284 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2285 ParseToken(lltok::greater, "expected end of constant"))
2288 if (isPackedStruct) {
2289 ID.ConstantStructElts = new Constant*[Elts.size()];
2290 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2291 ID.UIntVal = Elts.size();
2292 ID.Kind = ValID::t_PackedConstantStruct;
2297 return Error(ID.Loc, "constant vector must not be empty");
2299 if (!Elts[0]->getType()->isIntegerTy() &&
2300 !Elts[0]->getType()->isFloatingPointTy() &&
2301 !Elts[0]->getType()->isPointerTy())
2302 return Error(FirstEltLoc,
2303 "vector elements must have integer, pointer or floating point type");
2305 // Verify that all the vector elements have the same type.
2306 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2307 if (Elts[i]->getType() != Elts[0]->getType())
2308 return Error(FirstEltLoc,
2309 "vector element #" + Twine(i) +
2310 " is not of type '" + getTypeString(Elts[0]->getType()));
2312 ID.ConstantVal = ConstantVector::get(Elts);
2313 ID.Kind = ValID::t_Constant;
2316 case lltok::lsquare: { // Array Constant
2318 SmallVector<Constant*, 16> Elts;
2319 LocTy FirstEltLoc = Lex.getLoc();
2320 if (ParseGlobalValueVector(Elts) ||
2321 ParseToken(lltok::rsquare, "expected end of array constant"))
2324 // Handle empty element.
2326 // Use undef instead of an array because it's inconvenient to determine
2327 // the element type at this point, there being no elements to examine.
2328 ID.Kind = ValID::t_EmptyArray;
2332 if (!Elts[0]->getType()->isFirstClassType())
2333 return Error(FirstEltLoc, "invalid array element type: " +
2334 getTypeString(Elts[0]->getType()));
2336 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2338 // Verify all elements are correct type!
2339 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2340 if (Elts[i]->getType() != Elts[0]->getType())
2341 return Error(FirstEltLoc,
2342 "array element #" + Twine(i) +
2343 " is not of type '" + getTypeString(Elts[0]->getType()));
2346 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2347 ID.Kind = ValID::t_Constant;
2350 case lltok::kw_c: // c "foo"
2352 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2354 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2355 ID.Kind = ValID::t_Constant;
2358 case lltok::kw_asm: {
2359 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2361 bool HasSideEffect, AlignStack, AsmDialect;
2363 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2364 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2365 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2366 ParseStringConstant(ID.StrVal) ||
2367 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2368 ParseToken(lltok::StringConstant, "expected constraint string"))
2370 ID.StrVal2 = Lex.getStrVal();
2371 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2372 (unsigned(AsmDialect)<<2);
2373 ID.Kind = ValID::t_InlineAsm;
2377 case lltok::kw_blockaddress: {
2378 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2382 LocTy FnLoc, LabelLoc;
2384 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2386 ParseToken(lltok::comma, "expected comma in block address expression")||
2387 ParseValID(Label) ||
2388 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2391 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2392 return Error(Fn.Loc, "expected function name in blockaddress");
2393 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2394 return Error(Label.Loc, "expected basic block name in blockaddress");
2396 // Make a global variable as a placeholder for this reference.
2397 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2398 false, GlobalValue::InternalLinkage,
2400 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2401 ID.ConstantVal = FwdRef;
2402 ID.Kind = ValID::t_Constant;
2406 case lltok::kw_trunc:
2407 case lltok::kw_zext:
2408 case lltok::kw_sext:
2409 case lltok::kw_fptrunc:
2410 case lltok::kw_fpext:
2411 case lltok::kw_bitcast:
2412 case lltok::kw_uitofp:
2413 case lltok::kw_sitofp:
2414 case lltok::kw_fptoui:
2415 case lltok::kw_fptosi:
2416 case lltok::kw_inttoptr:
2417 case lltok::kw_ptrtoint: {
2418 unsigned Opc = Lex.getUIntVal();
2422 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2423 ParseGlobalTypeAndValue(SrcVal) ||
2424 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2425 ParseType(DestTy) ||
2426 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2428 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2429 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2430 getTypeString(SrcVal->getType()) + "' to '" +
2431 getTypeString(DestTy) + "'");
2432 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2434 ID.Kind = ValID::t_Constant;
2437 case lltok::kw_extractvalue: {
2440 SmallVector<unsigned, 4> Indices;
2441 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2442 ParseGlobalTypeAndValue(Val) ||
2443 ParseIndexList(Indices) ||
2444 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2447 if (!Val->getType()->isAggregateType())
2448 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2449 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2450 return Error(ID.Loc, "invalid indices for extractvalue");
2451 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2452 ID.Kind = ValID::t_Constant;
2455 case lltok::kw_insertvalue: {
2457 Constant *Val0, *Val1;
2458 SmallVector<unsigned, 4> Indices;
2459 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2460 ParseGlobalTypeAndValue(Val0) ||
2461 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2462 ParseGlobalTypeAndValue(Val1) ||
2463 ParseIndexList(Indices) ||
2464 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2466 if (!Val0->getType()->isAggregateType())
2467 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2468 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2469 return Error(ID.Loc, "invalid indices for insertvalue");
2470 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2471 ID.Kind = ValID::t_Constant;
2474 case lltok::kw_icmp:
2475 case lltok::kw_fcmp: {
2476 unsigned PredVal, Opc = Lex.getUIntVal();
2477 Constant *Val0, *Val1;
2479 if (ParseCmpPredicate(PredVal, Opc) ||
2480 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2481 ParseGlobalTypeAndValue(Val0) ||
2482 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2483 ParseGlobalTypeAndValue(Val1) ||
2484 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2487 if (Val0->getType() != Val1->getType())
2488 return Error(ID.Loc, "compare operands must have the same type");
2490 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2492 if (Opc == Instruction::FCmp) {
2493 if (!Val0->getType()->isFPOrFPVectorTy())
2494 return Error(ID.Loc, "fcmp requires floating point operands");
2495 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2497 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2498 if (!Val0->getType()->isIntOrIntVectorTy() &&
2499 !Val0->getType()->getScalarType()->isPointerTy())
2500 return Error(ID.Loc, "icmp requires pointer or integer operands");
2501 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2503 ID.Kind = ValID::t_Constant;
2507 // Binary Operators.
2509 case lltok::kw_fadd:
2511 case lltok::kw_fsub:
2513 case lltok::kw_fmul:
2514 case lltok::kw_udiv:
2515 case lltok::kw_sdiv:
2516 case lltok::kw_fdiv:
2517 case lltok::kw_urem:
2518 case lltok::kw_srem:
2519 case lltok::kw_frem:
2521 case lltok::kw_lshr:
2522 case lltok::kw_ashr: {
2526 unsigned Opc = Lex.getUIntVal();
2527 Constant *Val0, *Val1;
2529 LocTy ModifierLoc = Lex.getLoc();
2530 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2531 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2532 if (EatIfPresent(lltok::kw_nuw))
2534 if (EatIfPresent(lltok::kw_nsw)) {
2536 if (EatIfPresent(lltok::kw_nuw))
2539 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2540 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2541 if (EatIfPresent(lltok::kw_exact))
2544 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2545 ParseGlobalTypeAndValue(Val0) ||
2546 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2547 ParseGlobalTypeAndValue(Val1) ||
2548 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2550 if (Val0->getType() != Val1->getType())
2551 return Error(ID.Loc, "operands of constexpr must have same type");
2552 if (!Val0->getType()->isIntOrIntVectorTy()) {
2554 return Error(ModifierLoc, "nuw only applies to integer operations");
2556 return Error(ModifierLoc, "nsw only applies to integer operations");
2558 // Check that the type is valid for the operator.
2560 case Instruction::Add:
2561 case Instruction::Sub:
2562 case Instruction::Mul:
2563 case Instruction::UDiv:
2564 case Instruction::SDiv:
2565 case Instruction::URem:
2566 case Instruction::SRem:
2567 case Instruction::Shl:
2568 case Instruction::AShr:
2569 case Instruction::LShr:
2570 if (!Val0->getType()->isIntOrIntVectorTy())
2571 return Error(ID.Loc, "constexpr requires integer operands");
2573 case Instruction::FAdd:
2574 case Instruction::FSub:
2575 case Instruction::FMul:
2576 case Instruction::FDiv:
2577 case Instruction::FRem:
2578 if (!Val0->getType()->isFPOrFPVectorTy())
2579 return Error(ID.Loc, "constexpr requires fp operands");
2581 default: llvm_unreachable("Unknown binary operator!");
2584 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2585 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2586 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2587 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2589 ID.Kind = ValID::t_Constant;
2593 // Logical Operations
2596 case lltok::kw_xor: {
2597 unsigned Opc = Lex.getUIntVal();
2598 Constant *Val0, *Val1;
2600 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2601 ParseGlobalTypeAndValue(Val0) ||
2602 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2603 ParseGlobalTypeAndValue(Val1) ||
2604 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2606 if (Val0->getType() != Val1->getType())
2607 return Error(ID.Loc, "operands of constexpr must have same type");
2608 if (!Val0->getType()->isIntOrIntVectorTy())
2609 return Error(ID.Loc,
2610 "constexpr requires integer or integer vector operands");
2611 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2612 ID.Kind = ValID::t_Constant;
2616 case lltok::kw_getelementptr:
2617 case lltok::kw_shufflevector:
2618 case lltok::kw_insertelement:
2619 case lltok::kw_extractelement:
2620 case lltok::kw_select: {
2621 unsigned Opc = Lex.getUIntVal();
2622 SmallVector<Constant*, 16> Elts;
2623 bool InBounds = false;
2625 if (Opc == Instruction::GetElementPtr)
2626 InBounds = EatIfPresent(lltok::kw_inbounds);
2627 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2628 ParseGlobalValueVector(Elts) ||
2629 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2632 if (Opc == Instruction::GetElementPtr) {
2633 if (Elts.size() == 0 ||
2634 !Elts[0]->getType()->getScalarType()->isPointerTy())
2635 return Error(ID.Loc, "getelementptr requires pointer operand");
2637 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2638 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2639 return Error(ID.Loc, "invalid indices for getelementptr");
2640 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2642 } else if (Opc == Instruction::Select) {
2643 if (Elts.size() != 3)
2644 return Error(ID.Loc, "expected three operands to select");
2645 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2647 return Error(ID.Loc, Reason);
2648 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2649 } else if (Opc == Instruction::ShuffleVector) {
2650 if (Elts.size() != 3)
2651 return Error(ID.Loc, "expected three operands to shufflevector");
2652 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2653 return Error(ID.Loc, "invalid operands to shufflevector");
2655 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2656 } else if (Opc == Instruction::ExtractElement) {
2657 if (Elts.size() != 2)
2658 return Error(ID.Loc, "expected two operands to extractelement");
2659 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2660 return Error(ID.Loc, "invalid extractelement operands");
2661 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2663 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2664 if (Elts.size() != 3)
2665 return Error(ID.Loc, "expected three operands to insertelement");
2666 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2667 return Error(ID.Loc, "invalid insertelement operands");
2669 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2672 ID.Kind = ValID::t_Constant;
2681 /// ParseGlobalValue - Parse a global value with the specified type.
2682 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2686 bool Parsed = ParseValID(ID) ||
2687 ConvertValIDToValue(Ty, ID, V, NULL);
2688 if (V && !(C = dyn_cast<Constant>(V)))
2689 return Error(ID.Loc, "global values must be constants");
2693 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2695 return ParseType(Ty) ||
2696 ParseGlobalValue(Ty, V);
2699 /// ParseGlobalValueVector
2701 /// ::= TypeAndValue (',' TypeAndValue)*
2702 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2704 if (Lex.getKind() == lltok::rbrace ||
2705 Lex.getKind() == lltok::rsquare ||
2706 Lex.getKind() == lltok::greater ||
2707 Lex.getKind() == lltok::rparen)
2711 if (ParseGlobalTypeAndValue(C)) return true;
2714 while (EatIfPresent(lltok::comma)) {
2715 if (ParseGlobalTypeAndValue(C)) return true;
2722 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2723 assert(Lex.getKind() == lltok::lbrace);
2726 SmallVector<Value*, 16> Elts;
2727 if (ParseMDNodeVector(Elts, PFS) ||
2728 ParseToken(lltok::rbrace, "expected end of metadata node"))
2731 ID.MDNodeVal = MDNode::get(Context, Elts);
2732 ID.Kind = ValID::t_MDNode;
2736 /// ParseMetadataValue
2740 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2741 assert(Lex.getKind() == lltok::exclaim);
2746 if (Lex.getKind() == lltok::lbrace)
2747 return ParseMetadataListValue(ID, PFS);
2749 // Standalone metadata reference
2751 if (Lex.getKind() == lltok::APSInt) {
2752 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2753 ID.Kind = ValID::t_MDNode;
2758 // ::= '!' STRINGCONSTANT
2759 if (ParseMDString(ID.MDStringVal)) return true;
2760 ID.Kind = ValID::t_MDString;
2765 //===----------------------------------------------------------------------===//
2766 // Function Parsing.
2767 //===----------------------------------------------------------------------===//
2769 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2770 PerFunctionState *PFS) {
2771 if (Ty->isFunctionTy())
2772 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2775 case ValID::t_LocalID:
2776 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2777 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2779 case ValID::t_LocalName:
2780 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2781 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2783 case ValID::t_InlineAsm: {
2784 PointerType *PTy = dyn_cast<PointerType>(Ty);
2786 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2787 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2788 return Error(ID.Loc, "invalid type for inline asm constraint string");
2789 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2790 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2793 case ValID::t_MDNode:
2794 if (!Ty->isMetadataTy())
2795 return Error(ID.Loc, "metadata value must have metadata type");
2798 case ValID::t_MDString:
2799 if (!Ty->isMetadataTy())
2800 return Error(ID.Loc, "metadata value must have metadata type");
2803 case ValID::t_GlobalName:
2804 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2806 case ValID::t_GlobalID:
2807 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2809 case ValID::t_APSInt:
2810 if (!Ty->isIntegerTy())
2811 return Error(ID.Loc, "integer constant must have integer type");
2812 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2813 V = ConstantInt::get(Context, ID.APSIntVal);
2815 case ValID::t_APFloat:
2816 if (!Ty->isFloatingPointTy() ||
2817 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2818 return Error(ID.Loc, "floating point constant invalid for type");
2820 // The lexer has no type info, so builds all half, float, and double FP
2821 // constants as double. Fix this here. Long double does not need this.
2822 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2825 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2827 else if (Ty->isFloatTy())
2828 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2831 V = ConstantFP::get(Context, ID.APFloatVal);
2833 if (V->getType() != Ty)
2834 return Error(ID.Loc, "floating point constant does not have type '" +
2835 getTypeString(Ty) + "'");
2839 if (!Ty->isPointerTy())
2840 return Error(ID.Loc, "null must be a pointer type");
2841 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2843 case ValID::t_Undef:
2844 // FIXME: LabelTy should not be a first-class type.
2845 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2846 return Error(ID.Loc, "invalid type for undef constant");
2847 V = UndefValue::get(Ty);
2849 case ValID::t_EmptyArray:
2850 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2851 return Error(ID.Loc, "invalid empty array initializer");
2852 V = UndefValue::get(Ty);
2855 // FIXME: LabelTy should not be a first-class type.
2856 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2857 return Error(ID.Loc, "invalid type for null constant");
2858 V = Constant::getNullValue(Ty);
2860 case ValID::t_Constant:
2861 if (ID.ConstantVal->getType() != Ty)
2862 return Error(ID.Loc, "constant expression type mismatch");
2866 case ValID::t_ConstantStruct:
2867 case ValID::t_PackedConstantStruct:
2868 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2869 if (ST->getNumElements() != ID.UIntVal)
2870 return Error(ID.Loc,
2871 "initializer with struct type has wrong # elements");
2872 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2873 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2875 // Verify that the elements are compatible with the structtype.
2876 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2877 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2878 return Error(ID.Loc, "element " + Twine(i) +
2879 " of struct initializer doesn't match struct element type");
2881 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2884 return Error(ID.Loc, "constant expression type mismatch");
2887 llvm_unreachable("Invalid ValID");
2890 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2893 return ParseValID(ID, PFS) ||
2894 ConvertValIDToValue(Ty, ID, V, PFS);
2897 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2899 return ParseType(Ty) ||
2900 ParseValue(Ty, V, PFS);
2903 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2904 PerFunctionState &PFS) {
2907 if (ParseTypeAndValue(V, PFS)) return true;
2908 if (!isa<BasicBlock>(V))
2909 return Error(Loc, "expected a basic block");
2910 BB = cast<BasicBlock>(V);
2916 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2917 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2918 /// OptionalAlign OptGC
2919 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2920 // Parse the linkage.
2921 LocTy LinkageLoc = Lex.getLoc();
2924 unsigned Visibility;
2925 AttrBuilder RetAttrs;
2928 LocTy RetTypeLoc = Lex.getLoc();
2929 if (ParseOptionalLinkage(Linkage) ||
2930 ParseOptionalVisibility(Visibility) ||
2931 ParseOptionalCallingConv(CC) ||
2932 ParseOptionalReturnAttrs(RetAttrs) ||
2933 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2936 // Verify that the linkage is ok.
2937 switch ((GlobalValue::LinkageTypes)Linkage) {
2938 case GlobalValue::ExternalLinkage:
2939 break; // always ok.
2940 case GlobalValue::DLLImportLinkage:
2941 case GlobalValue::ExternalWeakLinkage:
2943 return Error(LinkageLoc, "invalid linkage for function definition");
2945 case GlobalValue::PrivateLinkage:
2946 case GlobalValue::LinkerPrivateLinkage:
2947 case GlobalValue::LinkerPrivateWeakLinkage:
2948 case GlobalValue::InternalLinkage:
2949 case GlobalValue::AvailableExternallyLinkage:
2950 case GlobalValue::LinkOnceAnyLinkage:
2951 case GlobalValue::LinkOnceODRLinkage:
2952 case GlobalValue::LinkOnceODRAutoHideLinkage:
2953 case GlobalValue::WeakAnyLinkage:
2954 case GlobalValue::WeakODRLinkage:
2955 case GlobalValue::DLLExportLinkage:
2957 return Error(LinkageLoc, "invalid linkage for function declaration");
2959 case GlobalValue::AppendingLinkage:
2960 case GlobalValue::CommonLinkage:
2961 return Error(LinkageLoc, "invalid function linkage type");
2964 if (!FunctionType::isValidReturnType(RetType))
2965 return Error(RetTypeLoc, "invalid function return type");
2967 LocTy NameLoc = Lex.getLoc();
2969 std::string FunctionName;
2970 if (Lex.getKind() == lltok::GlobalVar) {
2971 FunctionName = Lex.getStrVal();
2972 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2973 unsigned NameID = Lex.getUIntVal();
2975 if (NameID != NumberedVals.size())
2976 return TokError("function expected to be numbered '%" +
2977 Twine(NumberedVals.size()) + "'");
2979 return TokError("expected function name");
2984 if (Lex.getKind() != lltok::lparen)
2985 return TokError("expected '(' in function argument list");
2987 SmallVector<ArgInfo, 8> ArgList;
2989 AttrBuilder FuncAttrs;
2990 std::vector<unsigned> FwdRefAttrGrps;
2992 std::string Section;
2996 LocTy UnnamedAddrLoc;
2998 if (ParseArgumentList(ArgList, isVarArg) ||
2999 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3001 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3003 (EatIfPresent(lltok::kw_section) &&
3004 ParseStringConstant(Section)) ||
3005 ParseOptionalAlignment(Alignment) ||
3006 (EatIfPresent(lltok::kw_gc) &&
3007 ParseStringConstant(GC)))
3010 if (FuncAttrs.contains(Attribute::Builtin))
3011 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3013 // If the alignment was parsed as an attribute, move to the alignment field.
3014 if (FuncAttrs.hasAlignmentAttr()) {
3015 Alignment = FuncAttrs.getAlignment();
3016 FuncAttrs.removeAttribute(Attribute::Alignment);
3019 // Okay, if we got here, the function is syntactically valid. Convert types
3020 // and do semantic checks.
3021 std::vector<Type*> ParamTypeList;
3022 SmallVector<AttributeSet, 8> Attrs;
3024 if (RetAttrs.hasAttributes())
3025 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3026 AttributeSet::ReturnIndex,
3029 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3030 ParamTypeList.push_back(ArgList[i].Ty);
3031 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3032 AttrBuilder B(ArgList[i].Attrs, i + 1);
3033 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3037 if (FuncAttrs.hasAttributes())
3038 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3039 AttributeSet::FunctionIndex,
3042 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3044 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3045 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3048 FunctionType::get(RetType, ParamTypeList, isVarArg);
3049 PointerType *PFT = PointerType::getUnqual(FT);
3052 if (!FunctionName.empty()) {
3053 // If this was a definition of a forward reference, remove the definition
3054 // from the forward reference table and fill in the forward ref.
3055 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3056 ForwardRefVals.find(FunctionName);
3057 if (FRVI != ForwardRefVals.end()) {
3058 Fn = M->getFunction(FunctionName);
3060 return Error(FRVI->second.second, "invalid forward reference to "
3061 "function as global value!");
3062 if (Fn->getType() != PFT)
3063 return Error(FRVI->second.second, "invalid forward reference to "
3064 "function '" + FunctionName + "' with wrong type!");
3066 ForwardRefVals.erase(FRVI);
3067 } else if ((Fn = M->getFunction(FunctionName))) {
3068 // Reject redefinitions.
3069 return Error(NameLoc, "invalid redefinition of function '" +
3070 FunctionName + "'");
3071 } else if (M->getNamedValue(FunctionName)) {
3072 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3076 // If this is a definition of a forward referenced function, make sure the
3078 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3079 = ForwardRefValIDs.find(NumberedVals.size());
3080 if (I != ForwardRefValIDs.end()) {
3081 Fn = cast<Function>(I->second.first);
3082 if (Fn->getType() != PFT)
3083 return Error(NameLoc, "type of definition and forward reference of '@" +
3084 Twine(NumberedVals.size()) + "' disagree");
3085 ForwardRefValIDs.erase(I);
3090 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3091 else // Move the forward-reference to the correct spot in the module.
3092 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3094 if (FunctionName.empty())
3095 NumberedVals.push_back(Fn);
3097 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3098 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3099 Fn->setCallingConv(CC);
3100 Fn->setAttributes(PAL);
3101 Fn->setUnnamedAddr(UnnamedAddr);
3102 Fn->setAlignment(Alignment);
3103 Fn->setSection(Section);
3104 if (!GC.empty()) Fn->setGC(GC.c_str());
3105 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3107 // Add all of the arguments we parsed to the function.
3108 Function::arg_iterator ArgIt = Fn->arg_begin();
3109 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3110 // If the argument has a name, insert it into the argument symbol table.
3111 if (ArgList[i].Name.empty()) continue;
3113 // Set the name, if it conflicted, it will be auto-renamed.
3114 ArgIt->setName(ArgList[i].Name);
3116 if (ArgIt->getName() != ArgList[i].Name)
3117 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3118 ArgList[i].Name + "'");
3125 /// ParseFunctionBody
3126 /// ::= '{' BasicBlock+ '}'
3128 bool LLParser::ParseFunctionBody(Function &Fn) {
3129 if (Lex.getKind() != lltok::lbrace)
3130 return TokError("expected '{' in function body");
3131 Lex.Lex(); // eat the {.
3133 int FunctionNumber = -1;
3134 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3136 PerFunctionState PFS(*this, Fn, FunctionNumber);
3138 // We need at least one basic block.
3139 if (Lex.getKind() == lltok::rbrace)
3140 return TokError("function body requires at least one basic block");
3142 while (Lex.getKind() != lltok::rbrace)
3143 if (ParseBasicBlock(PFS)) return true;
3148 // Verify function is ok.
3149 return PFS.FinishFunction();
3153 /// ::= LabelStr? Instruction*
3154 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3155 // If this basic block starts out with a name, remember it.
3157 LocTy NameLoc = Lex.getLoc();
3158 if (Lex.getKind() == lltok::LabelStr) {
3159 Name = Lex.getStrVal();
3163 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3164 if (BB == 0) return true;
3166 std::string NameStr;
3168 // Parse the instructions in this block until we get a terminator.
3170 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3172 // This instruction may have three possibilities for a name: a) none
3173 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3174 LocTy NameLoc = Lex.getLoc();
3178 if (Lex.getKind() == lltok::LocalVarID) {
3179 NameID = Lex.getUIntVal();
3181 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3183 } else if (Lex.getKind() == lltok::LocalVar) {
3184 NameStr = Lex.getStrVal();
3186 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3190 switch (ParseInstruction(Inst, BB, PFS)) {
3191 default: llvm_unreachable("Unknown ParseInstruction result!");
3192 case InstError: return true;
3194 BB->getInstList().push_back(Inst);
3196 // With a normal result, we check to see if the instruction is followed by
3197 // a comma and metadata.
3198 if (EatIfPresent(lltok::comma))
3199 if (ParseInstructionMetadata(Inst, &PFS))
3202 case InstExtraComma:
3203 BB->getInstList().push_back(Inst);
3205 // If the instruction parser ate an extra comma at the end of it, it
3206 // *must* be followed by metadata.
3207 if (ParseInstructionMetadata(Inst, &PFS))
3212 // Set the name on the instruction.
3213 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3214 } while (!isa<TerminatorInst>(Inst));
3219 //===----------------------------------------------------------------------===//
3220 // Instruction Parsing.
3221 //===----------------------------------------------------------------------===//
3223 /// ParseInstruction - Parse one of the many different instructions.
3225 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3226 PerFunctionState &PFS) {
3227 lltok::Kind Token = Lex.getKind();
3228 if (Token == lltok::Eof)
3229 return TokError("found end of file when expecting more instructions");
3230 LocTy Loc = Lex.getLoc();
3231 unsigned KeywordVal = Lex.getUIntVal();
3232 Lex.Lex(); // Eat the keyword.
3235 default: return Error(Loc, "expected instruction opcode");
3236 // Terminator Instructions.
3237 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3238 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3239 case lltok::kw_br: return ParseBr(Inst, PFS);
3240 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3241 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3242 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3243 case lltok::kw_resume: return ParseResume(Inst, PFS);
3244 // Binary Operators.
3248 case lltok::kw_shl: {
3249 bool NUW = EatIfPresent(lltok::kw_nuw);
3250 bool NSW = EatIfPresent(lltok::kw_nsw);
3251 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3253 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3255 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3256 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3259 case lltok::kw_fadd:
3260 case lltok::kw_fsub:
3261 case lltok::kw_fmul:
3262 case lltok::kw_fdiv:
3263 case lltok::kw_frem: {
3264 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3265 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3269 Inst->setFastMathFlags(FMF);
3273 case lltok::kw_sdiv:
3274 case lltok::kw_udiv:
3275 case lltok::kw_lshr:
3276 case lltok::kw_ashr: {
3277 bool Exact = EatIfPresent(lltok::kw_exact);
3279 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3280 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3284 case lltok::kw_urem:
3285 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3288 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3289 case lltok::kw_icmp:
3290 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3292 case lltok::kw_trunc:
3293 case lltok::kw_zext:
3294 case lltok::kw_sext:
3295 case lltok::kw_fptrunc:
3296 case lltok::kw_fpext:
3297 case lltok::kw_bitcast:
3298 case lltok::kw_uitofp:
3299 case lltok::kw_sitofp:
3300 case lltok::kw_fptoui:
3301 case lltok::kw_fptosi:
3302 case lltok::kw_inttoptr:
3303 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3305 case lltok::kw_select: return ParseSelect(Inst, PFS);
3306 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3307 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3308 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3309 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3310 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3311 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3312 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3313 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3315 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3316 case lltok::kw_load: return ParseLoad(Inst, PFS);
3317 case lltok::kw_store: return ParseStore(Inst, PFS);
3318 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3319 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3320 case lltok::kw_fence: return ParseFence(Inst, PFS);
3321 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3322 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3323 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3327 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3328 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3329 if (Opc == Instruction::FCmp) {
3330 switch (Lex.getKind()) {
3331 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3332 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3333 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3334 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3335 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3336 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3337 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3338 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3339 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3340 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3341 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3342 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3343 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3344 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3345 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3346 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3347 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3350 switch (Lex.getKind()) {
3351 default: return TokError("expected icmp predicate (e.g. 'eq')");
3352 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3353 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3354 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3355 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3356 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3357 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3358 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3359 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3360 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3361 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3368 //===----------------------------------------------------------------------===//
3369 // Terminator Instructions.
3370 //===----------------------------------------------------------------------===//
3372 /// ParseRet - Parse a return instruction.
3373 /// ::= 'ret' void (',' !dbg, !1)*
3374 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3375 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3376 PerFunctionState &PFS) {
3377 SMLoc TypeLoc = Lex.getLoc();
3379 if (ParseType(Ty, true /*void allowed*/)) return true;
3381 Type *ResType = PFS.getFunction().getReturnType();
3383 if (Ty->isVoidTy()) {
3384 if (!ResType->isVoidTy())
3385 return Error(TypeLoc, "value doesn't match function result type '" +
3386 getTypeString(ResType) + "'");
3388 Inst = ReturnInst::Create(Context);
3393 if (ParseValue(Ty, RV, PFS)) return true;
3395 if (ResType != RV->getType())
3396 return Error(TypeLoc, "value doesn't match function result type '" +
3397 getTypeString(ResType) + "'");
3399 Inst = ReturnInst::Create(Context, RV);
3405 /// ::= 'br' TypeAndValue
3406 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3407 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3410 BasicBlock *Op1, *Op2;
3411 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3413 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3414 Inst = BranchInst::Create(BB);
3418 if (Op0->getType() != Type::getInt1Ty(Context))
3419 return Error(Loc, "branch condition must have 'i1' type");
3421 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3422 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3423 ParseToken(lltok::comma, "expected ',' after true destination") ||
3424 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3427 Inst = BranchInst::Create(Op1, Op2, Op0);
3433 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3435 /// ::= (TypeAndValue ',' TypeAndValue)*
3436 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3437 LocTy CondLoc, BBLoc;
3439 BasicBlock *DefaultBB;
3440 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3441 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3442 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3443 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3446 if (!Cond->getType()->isIntegerTy())
3447 return Error(CondLoc, "switch condition must have integer type");
3449 // Parse the jump table pairs.
3450 SmallPtrSet<Value*, 32> SeenCases;
3451 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3452 while (Lex.getKind() != lltok::rsquare) {
3456 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3457 ParseToken(lltok::comma, "expected ',' after case value") ||
3458 ParseTypeAndBasicBlock(DestBB, PFS))
3461 if (!SeenCases.insert(Constant))
3462 return Error(CondLoc, "duplicate case value in switch");
3463 if (!isa<ConstantInt>(Constant))
3464 return Error(CondLoc, "case value is not a constant integer");
3466 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3469 Lex.Lex(); // Eat the ']'.
3471 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3472 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3473 SI->addCase(Table[i].first, Table[i].second);
3480 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3481 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3484 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3485 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3486 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3489 if (!Address->getType()->isPointerTy())
3490 return Error(AddrLoc, "indirectbr address must have pointer type");
3492 // Parse the destination list.
3493 SmallVector<BasicBlock*, 16> DestList;
3495 if (Lex.getKind() != lltok::rsquare) {
3497 if (ParseTypeAndBasicBlock(DestBB, PFS))
3499 DestList.push_back(DestBB);
3501 while (EatIfPresent(lltok::comma)) {
3502 if (ParseTypeAndBasicBlock(DestBB, PFS))
3504 DestList.push_back(DestBB);
3508 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3511 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3512 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3513 IBI->addDestination(DestList[i]);
3520 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3521 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3522 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3523 LocTy CallLoc = Lex.getLoc();
3524 AttrBuilder RetAttrs, FnAttrs;
3525 std::vector<unsigned> FwdRefAttrGrps;
3531 SmallVector<ParamInfo, 16> ArgList;
3533 BasicBlock *NormalBB, *UnwindBB;
3534 if (ParseOptionalCallingConv(CC) ||
3535 ParseOptionalReturnAttrs(RetAttrs) ||
3536 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3537 ParseValID(CalleeID) ||
3538 ParseParameterList(ArgList, PFS) ||
3539 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3541 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3542 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3543 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3544 ParseTypeAndBasicBlock(UnwindBB, PFS))
3547 // If RetType is a non-function pointer type, then this is the short syntax
3548 // for the call, which means that RetType is just the return type. Infer the
3549 // rest of the function argument types from the arguments that are present.
3550 PointerType *PFTy = 0;
3551 FunctionType *Ty = 0;
3552 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3553 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3554 // Pull out the types of all of the arguments...
3555 std::vector<Type*> ParamTypes;
3556 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3557 ParamTypes.push_back(ArgList[i].V->getType());
3559 if (!FunctionType::isValidReturnType(RetType))
3560 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3562 Ty = FunctionType::get(RetType, ParamTypes, false);
3563 PFTy = PointerType::getUnqual(Ty);
3566 // Look up the callee.
3568 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3570 // Set up the Attribute for the function.
3571 SmallVector<AttributeSet, 8> Attrs;
3572 if (RetAttrs.hasAttributes())
3573 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3574 AttributeSet::ReturnIndex,
3577 SmallVector<Value*, 8> Args;
3579 // Loop through FunctionType's arguments and ensure they are specified
3580 // correctly. Also, gather any parameter attributes.
3581 FunctionType::param_iterator I = Ty->param_begin();
3582 FunctionType::param_iterator E = Ty->param_end();
3583 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3584 Type *ExpectedTy = 0;
3587 } else if (!Ty->isVarArg()) {
3588 return Error(ArgList[i].Loc, "too many arguments specified");
3591 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3592 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3593 getTypeString(ExpectedTy) + "'");
3594 Args.push_back(ArgList[i].V);
3595 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3596 AttrBuilder B(ArgList[i].Attrs, i + 1);
3597 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3602 return Error(CallLoc, "not enough parameters specified for call");
3604 if (FnAttrs.hasAttributes())
3605 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3606 AttributeSet::FunctionIndex,
3609 // Finish off the Attribute and check them
3610 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3612 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3613 II->setCallingConv(CC);
3614 II->setAttributes(PAL);
3615 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3621 /// ::= 'resume' TypeAndValue
3622 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3623 Value *Exn; LocTy ExnLoc;
3624 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3627 ResumeInst *RI = ResumeInst::Create(Exn);
3632 //===----------------------------------------------------------------------===//
3633 // Binary Operators.
3634 //===----------------------------------------------------------------------===//
3637 /// ::= ArithmeticOps TypeAndValue ',' Value
3639 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3640 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3641 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3642 unsigned Opc, unsigned OperandType) {
3643 LocTy Loc; Value *LHS, *RHS;
3644 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3645 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3646 ParseValue(LHS->getType(), RHS, PFS))
3650 switch (OperandType) {
3651 default: llvm_unreachable("Unknown operand type!");
3652 case 0: // int or FP.
3653 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3654 LHS->getType()->isFPOrFPVectorTy();
3656 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3657 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3661 return Error(Loc, "invalid operand type for instruction");
3663 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3668 /// ::= ArithmeticOps TypeAndValue ',' Value {
3669 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3671 LocTy Loc; Value *LHS, *RHS;
3672 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3673 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3674 ParseValue(LHS->getType(), RHS, PFS))
3677 if (!LHS->getType()->isIntOrIntVectorTy())
3678 return Error(Loc,"instruction requires integer or integer vector operands");
3680 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3686 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3687 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3688 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3690 // Parse the integer/fp comparison predicate.
3694 if (ParseCmpPredicate(Pred, Opc) ||
3695 ParseTypeAndValue(LHS, Loc, PFS) ||
3696 ParseToken(lltok::comma, "expected ',' after compare value") ||
3697 ParseValue(LHS->getType(), RHS, PFS))
3700 if (Opc == Instruction::FCmp) {
3701 if (!LHS->getType()->isFPOrFPVectorTy())
3702 return Error(Loc, "fcmp requires floating point operands");
3703 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3705 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3706 if (!LHS->getType()->isIntOrIntVectorTy() &&
3707 !LHS->getType()->getScalarType()->isPointerTy())
3708 return Error(Loc, "icmp requires integer operands");
3709 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3714 //===----------------------------------------------------------------------===//
3715 // Other Instructions.
3716 //===----------------------------------------------------------------------===//
3720 /// ::= CastOpc TypeAndValue 'to' Type
3721 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3726 if (ParseTypeAndValue(Op, Loc, PFS) ||
3727 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3731 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3732 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3733 return Error(Loc, "invalid cast opcode for cast from '" +
3734 getTypeString(Op->getType()) + "' to '" +
3735 getTypeString(DestTy) + "'");
3737 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3742 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3743 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3745 Value *Op0, *Op1, *Op2;
3746 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3747 ParseToken(lltok::comma, "expected ',' after select condition") ||
3748 ParseTypeAndValue(Op1, PFS) ||
3749 ParseToken(lltok::comma, "expected ',' after select value") ||
3750 ParseTypeAndValue(Op2, PFS))
3753 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3754 return Error(Loc, Reason);
3756 Inst = SelectInst::Create(Op0, Op1, Op2);
3761 /// ::= 'va_arg' TypeAndValue ',' Type
3762 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3766 if (ParseTypeAndValue(Op, PFS) ||
3767 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3768 ParseType(EltTy, TypeLoc))
3771 if (!EltTy->isFirstClassType())
3772 return Error(TypeLoc, "va_arg requires operand with first class type");
3774 Inst = new VAArgInst(Op, EltTy);
3778 /// ParseExtractElement
3779 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3780 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3783 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3784 ParseToken(lltok::comma, "expected ',' after extract value") ||
3785 ParseTypeAndValue(Op1, PFS))
3788 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3789 return Error(Loc, "invalid extractelement operands");
3791 Inst = ExtractElementInst::Create(Op0, Op1);
3795 /// ParseInsertElement
3796 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3797 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3799 Value *Op0, *Op1, *Op2;
3800 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3801 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3802 ParseTypeAndValue(Op1, PFS) ||
3803 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3804 ParseTypeAndValue(Op2, PFS))
3807 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3808 return Error(Loc, "invalid insertelement operands");
3810 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3814 /// ParseShuffleVector
3815 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3816 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3818 Value *Op0, *Op1, *Op2;
3819 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3820 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3821 ParseTypeAndValue(Op1, PFS) ||
3822 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3823 ParseTypeAndValue(Op2, PFS))
3826 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3827 return Error(Loc, "invalid shufflevector operands");
3829 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3834 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3835 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3836 Type *Ty = 0; LocTy TypeLoc;
3839 if (ParseType(Ty, TypeLoc) ||
3840 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3841 ParseValue(Ty, Op0, PFS) ||
3842 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3843 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3844 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3847 bool AteExtraComma = false;
3848 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3850 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3852 if (!EatIfPresent(lltok::comma))
3855 if (Lex.getKind() == lltok::MetadataVar) {
3856 AteExtraComma = true;
3860 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3861 ParseValue(Ty, Op0, PFS) ||
3862 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3863 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3864 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3868 if (!Ty->isFirstClassType())
3869 return Error(TypeLoc, "phi node must have first class type");
3871 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3872 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3873 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3875 return AteExtraComma ? InstExtraComma : InstNormal;
3879 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3881 /// ::= 'catch' TypeAndValue
3883 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3884 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3885 Type *Ty = 0; LocTy TyLoc;
3886 Value *PersFn; LocTy PersFnLoc;
3888 if (ParseType(Ty, TyLoc) ||
3889 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3890 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3893 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3894 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3896 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3897 LandingPadInst::ClauseType CT;
3898 if (EatIfPresent(lltok::kw_catch))
3899 CT = LandingPadInst::Catch;
3900 else if (EatIfPresent(lltok::kw_filter))
3901 CT = LandingPadInst::Filter;
3903 return TokError("expected 'catch' or 'filter' clause type");
3905 Value *V; LocTy VLoc;
3906 if (ParseTypeAndValue(V, VLoc, PFS)) {
3911 // A 'catch' type expects a non-array constant. A filter clause expects an
3913 if (CT == LandingPadInst::Catch) {
3914 if (isa<ArrayType>(V->getType()))
3915 Error(VLoc, "'catch' clause has an invalid type");
3917 if (!isa<ArrayType>(V->getType()))
3918 Error(VLoc, "'filter' clause has an invalid type");
3929 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3930 /// ParameterList OptionalAttrs
3931 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3933 AttrBuilder RetAttrs, FnAttrs;
3934 std::vector<unsigned> FwdRefAttrGrps;
3940 SmallVector<ParamInfo, 16> ArgList;
3941 LocTy CallLoc = Lex.getLoc();
3943 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3944 ParseOptionalCallingConv(CC) ||
3945 ParseOptionalReturnAttrs(RetAttrs) ||
3946 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3947 ParseValID(CalleeID) ||
3948 ParseParameterList(ArgList, PFS) ||
3949 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3953 // If RetType is a non-function pointer type, then this is the short syntax
3954 // for the call, which means that RetType is just the return type. Infer the
3955 // rest of the function argument types from the arguments that are present.
3956 PointerType *PFTy = 0;
3957 FunctionType *Ty = 0;
3958 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3959 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3960 // Pull out the types of all of the arguments...
3961 std::vector<Type*> ParamTypes;
3962 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3963 ParamTypes.push_back(ArgList[i].V->getType());
3965 if (!FunctionType::isValidReturnType(RetType))
3966 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3968 Ty = FunctionType::get(RetType, ParamTypes, false);
3969 PFTy = PointerType::getUnqual(Ty);
3972 // Look up the callee.
3974 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3976 // Set up the Attribute for the function.
3977 SmallVector<AttributeSet, 8> Attrs;
3978 if (RetAttrs.hasAttributes())
3979 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3980 AttributeSet::ReturnIndex,
3983 SmallVector<Value*, 8> Args;
3985 // Loop through FunctionType's arguments and ensure they are specified
3986 // correctly. Also, gather any parameter attributes.
3987 FunctionType::param_iterator I = Ty->param_begin();
3988 FunctionType::param_iterator E = Ty->param_end();
3989 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3990 Type *ExpectedTy = 0;
3993 } else if (!Ty->isVarArg()) {
3994 return Error(ArgList[i].Loc, "too many arguments specified");
3997 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3998 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3999 getTypeString(ExpectedTy) + "'");
4000 Args.push_back(ArgList[i].V);
4001 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4002 AttrBuilder B(ArgList[i].Attrs, i + 1);
4003 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4008 return Error(CallLoc, "not enough parameters specified for call");
4010 if (FnAttrs.hasAttributes())
4011 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4012 AttributeSet::FunctionIndex,
4015 // Finish off the Attribute and check them
4016 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4018 CallInst *CI = CallInst::Create(Callee, Args);
4019 CI->setTailCall(isTail);
4020 CI->setCallingConv(CC);
4021 CI->setAttributes(PAL);
4022 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4027 //===----------------------------------------------------------------------===//
4028 // Memory Instructions.
4029 //===----------------------------------------------------------------------===//
4032 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4033 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4036 unsigned Alignment = 0;
4038 if (ParseType(Ty)) return true;
4040 bool AteExtraComma = false;
4041 if (EatIfPresent(lltok::comma)) {
4042 if (Lex.getKind() == lltok::kw_align) {
4043 if (ParseOptionalAlignment(Alignment)) return true;
4044 } else if (Lex.getKind() == lltok::MetadataVar) {
4045 AteExtraComma = true;
4047 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4048 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4053 if (Size && !Size->getType()->isIntegerTy())
4054 return Error(SizeLoc, "element count must have integer type");
4056 Inst = new AllocaInst(Ty, Size, Alignment);
4057 return AteExtraComma ? InstExtraComma : InstNormal;
4061 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4062 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4063 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4064 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4065 Value *Val; LocTy Loc;
4066 unsigned Alignment = 0;
4067 bool AteExtraComma = false;
4068 bool isAtomic = false;
4069 AtomicOrdering Ordering = NotAtomic;
4070 SynchronizationScope Scope = CrossThread;
4072 if (Lex.getKind() == lltok::kw_atomic) {
4077 bool isVolatile = false;
4078 if (Lex.getKind() == lltok::kw_volatile) {
4083 if (ParseTypeAndValue(Val, Loc, PFS) ||
4084 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4085 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4088 if (!Val->getType()->isPointerTy() ||
4089 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4090 return Error(Loc, "load operand must be a pointer to a first class type");
4091 if (isAtomic && !Alignment)
4092 return Error(Loc, "atomic load must have explicit non-zero alignment");
4093 if (Ordering == Release || Ordering == AcquireRelease)
4094 return Error(Loc, "atomic load cannot use Release ordering");
4096 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4097 return AteExtraComma ? InstExtraComma : InstNormal;
4102 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4103 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4104 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4105 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4106 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4107 unsigned Alignment = 0;
4108 bool AteExtraComma = false;
4109 bool isAtomic = false;
4110 AtomicOrdering Ordering = NotAtomic;
4111 SynchronizationScope Scope = CrossThread;
4113 if (Lex.getKind() == lltok::kw_atomic) {
4118 bool isVolatile = false;
4119 if (Lex.getKind() == lltok::kw_volatile) {
4124 if (ParseTypeAndValue(Val, Loc, PFS) ||
4125 ParseToken(lltok::comma, "expected ',' after store operand") ||
4126 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4127 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4128 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4131 if (!Ptr->getType()->isPointerTy())
4132 return Error(PtrLoc, "store operand must be a pointer");
4133 if (!Val->getType()->isFirstClassType())
4134 return Error(Loc, "store operand must be a first class value");
4135 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4136 return Error(Loc, "stored value and pointer type do not match");
4137 if (isAtomic && !Alignment)
4138 return Error(Loc, "atomic store must have explicit non-zero alignment");
4139 if (Ordering == Acquire || Ordering == AcquireRelease)
4140 return Error(Loc, "atomic store cannot use Acquire ordering");
4142 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4143 return AteExtraComma ? InstExtraComma : InstNormal;
4147 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4148 /// 'singlethread'? AtomicOrdering
4149 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4150 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4151 bool AteExtraComma = false;
4152 AtomicOrdering Ordering = NotAtomic;
4153 SynchronizationScope Scope = CrossThread;
4154 bool isVolatile = false;
4156 if (EatIfPresent(lltok::kw_volatile))
4159 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4160 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4161 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4162 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4163 ParseTypeAndValue(New, NewLoc, PFS) ||
4164 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4167 if (Ordering == Unordered)
4168 return TokError("cmpxchg cannot be unordered");
4169 if (!Ptr->getType()->isPointerTy())
4170 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4171 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4172 return Error(CmpLoc, "compare value and pointer type do not match");
4173 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4174 return Error(NewLoc, "new value and pointer type do not match");
4175 if (!New->getType()->isIntegerTy())
4176 return Error(NewLoc, "cmpxchg operand must be an integer");
4177 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4178 if (Size < 8 || (Size & (Size - 1)))
4179 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4182 AtomicCmpXchgInst *CXI =
4183 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4184 CXI->setVolatile(isVolatile);
4186 return AteExtraComma ? InstExtraComma : InstNormal;
4190 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4191 /// 'singlethread'? AtomicOrdering
4192 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4193 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4194 bool AteExtraComma = false;
4195 AtomicOrdering Ordering = NotAtomic;
4196 SynchronizationScope Scope = CrossThread;
4197 bool isVolatile = false;
4198 AtomicRMWInst::BinOp Operation;
4200 if (EatIfPresent(lltok::kw_volatile))
4203 switch (Lex.getKind()) {
4204 default: return TokError("expected binary operation in atomicrmw");
4205 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4206 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4207 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4208 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4209 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4210 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4211 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4212 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4213 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4214 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4215 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4217 Lex.Lex(); // Eat the operation.
4219 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4220 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4221 ParseTypeAndValue(Val, ValLoc, PFS) ||
4222 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4225 if (Ordering == Unordered)
4226 return TokError("atomicrmw cannot be unordered");
4227 if (!Ptr->getType()->isPointerTy())
4228 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4229 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4230 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4231 if (!Val->getType()->isIntegerTy())
4232 return Error(ValLoc, "atomicrmw operand must be an integer");
4233 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4234 if (Size < 8 || (Size & (Size - 1)))
4235 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4238 AtomicRMWInst *RMWI =
4239 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4240 RMWI->setVolatile(isVolatile);
4242 return AteExtraComma ? InstExtraComma : InstNormal;
4246 /// ::= 'fence' 'singlethread'? AtomicOrdering
4247 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4248 AtomicOrdering Ordering = NotAtomic;
4249 SynchronizationScope Scope = CrossThread;
4250 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4253 if (Ordering == Unordered)
4254 return TokError("fence cannot be unordered");
4255 if (Ordering == Monotonic)
4256 return TokError("fence cannot be monotonic");
4258 Inst = new FenceInst(Context, Ordering, Scope);
4262 /// ParseGetElementPtr
4263 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4264 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4269 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4271 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4273 Type *BaseType = Ptr->getType();
4274 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4275 if (!BasePointerType)
4276 return Error(Loc, "base of getelementptr must be a pointer");
4278 SmallVector<Value*, 16> Indices;
4279 bool AteExtraComma = false;
4280 while (EatIfPresent(lltok::comma)) {
4281 if (Lex.getKind() == lltok::MetadataVar) {
4282 AteExtraComma = true;
4285 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4286 if (!Val->getType()->getScalarType()->isIntegerTy())
4287 return Error(EltLoc, "getelementptr index must be an integer");
4288 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4289 return Error(EltLoc, "getelementptr index type missmatch");
4290 if (Val->getType()->isVectorTy()) {
4291 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4292 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4293 if (ValNumEl != PtrNumEl)
4294 return Error(EltLoc,
4295 "getelementptr vector index has a wrong number of elements");
4297 Indices.push_back(Val);
4300 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4301 return Error(Loc, "base element of getelementptr must be sized");
4303 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4304 return Error(Loc, "invalid getelementptr indices");
4305 Inst = GetElementPtrInst::Create(Ptr, Indices);
4307 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4308 return AteExtraComma ? InstExtraComma : InstNormal;
4311 /// ParseExtractValue
4312 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4313 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4314 Value *Val; LocTy Loc;
4315 SmallVector<unsigned, 4> Indices;
4317 if (ParseTypeAndValue(Val, Loc, PFS) ||
4318 ParseIndexList(Indices, AteExtraComma))
4321 if (!Val->getType()->isAggregateType())
4322 return Error(Loc, "extractvalue operand must be aggregate type");
4324 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4325 return Error(Loc, "invalid indices for extractvalue");
4326 Inst = ExtractValueInst::Create(Val, Indices);
4327 return AteExtraComma ? InstExtraComma : InstNormal;
4330 /// ParseInsertValue
4331 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4332 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4333 Value *Val0, *Val1; LocTy Loc0, Loc1;
4334 SmallVector<unsigned, 4> Indices;
4336 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4337 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4338 ParseTypeAndValue(Val1, Loc1, PFS) ||
4339 ParseIndexList(Indices, AteExtraComma))
4342 if (!Val0->getType()->isAggregateType())
4343 return Error(Loc0, "insertvalue operand must be aggregate type");
4345 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4346 return Error(Loc0, "invalid indices for insertvalue");
4347 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4348 return AteExtraComma ? InstExtraComma : InstNormal;
4351 //===----------------------------------------------------------------------===//
4352 // Embedded metadata.
4353 //===----------------------------------------------------------------------===//
4355 /// ParseMDNodeVector
4356 /// ::= Element (',' Element)*
4358 /// ::= 'null' | TypeAndValue
4359 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4360 PerFunctionState *PFS) {
4361 // Check for an empty list.
4362 if (Lex.getKind() == lltok::rbrace)
4366 // Null is a special case since it is typeless.
4367 if (EatIfPresent(lltok::kw_null)) {
4373 if (ParseTypeAndValue(V, PFS)) return true;
4375 } while (EatIfPresent(lltok::comma));