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, ArrayRef<Value*>());
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;
815 if (ParseToken(lltok::equal, "expected '=' here") ||
816 ParseToken(lltok::lbrace, "expected '{' here") ||
817 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true) ||
818 ParseToken(lltok::rbrace, "expected end of attribute group"))
821 if (!NumberedAttrBuilders[VarID].hasAttributes())
822 return Error(AttrGrpLoc, "attribute group has no attributes");
827 /// ParseFnAttributeValuePairs
828 /// ::= <attr> | <attr> '=' <value>
829 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
830 std::vector<unsigned> &FwdRefAttrGrps,
832 bool HaveError = false;
837 lltok::Kind Token = Lex.getKind();
840 if (!inAttrGrp) return HaveError;
841 return Error(Lex.getLoc(), "unterminated attribute group");
846 case lltok::AttrGrpID: {
847 // Allow a function to reference an attribute group:
849 // define void @foo() #1 { ... }
853 "cannot have an attribute group reference in an attribute group");
855 unsigned AttrGrpNum = Lex.getUIntVal();
856 if (inAttrGrp) break;
858 // Save the reference to the attribute group. We'll fill it in later.
859 FwdRefAttrGrps.push_back(AttrGrpNum);
862 // Target-dependent attributes:
863 case lltok::StringConstant: {
864 std::string Attr = Lex.getStrVal();
867 if (EatIfPresent(lltok::equal) &&
868 ParseStringConstant(Val))
871 B.addAttribute(Attr, Val);
875 // Target-independent attributes:
876 case lltok::kw_align: {
877 // As a hack, we allow "align 2" on functions as a synonym for "alignstack
882 if (ParseToken(lltok::equal, "expected '=' here") ||
883 ParseUInt32(Alignment))
886 if (ParseOptionalAlignment(Alignment))
889 B.addAlignmentAttr(Alignment);
892 case lltok::kw_alignstack: {
896 if (ParseToken(lltok::equal, "expected '=' here") ||
897 ParseUInt32(Alignment))
900 if (ParseOptionalStackAlignment(Alignment))
903 B.addStackAlignmentAttr(Alignment);
906 case lltok::kw_address_safety: B.addAttribute(Attribute::AddressSafety); break;
907 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
908 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
909 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
910 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
911 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
912 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
913 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
914 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
915 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
916 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
917 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
918 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
919 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
920 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
921 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
922 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
923 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
924 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
925 case lltok::kw_thread_safety: B.addAttribute(Attribute::ThreadSafety); break;
926 case lltok::kw_uninitialized_checks: B.addAttribute(Attribute::UninitializedChecks); break;
927 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
930 case lltok::kw_inreg:
931 case lltok::kw_signext:
932 case lltok::kw_zeroext:
935 "invalid use of attribute on a function");
937 case lltok::kw_byval:
939 case lltok::kw_noalias:
940 case lltok::kw_nocapture:
944 "invalid use of parameter-only attribute on a function");
952 //===----------------------------------------------------------------------===//
953 // GlobalValue Reference/Resolution Routines.
954 //===----------------------------------------------------------------------===//
956 /// GetGlobalVal - Get a value with the specified name or ID, creating a
957 /// forward reference record if needed. This can return null if the value
958 /// exists but does not have the right type.
959 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
961 PointerType *PTy = dyn_cast<PointerType>(Ty);
963 Error(Loc, "global variable reference must have pointer type");
967 // Look this name up in the normal function symbol table.
969 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
971 // If this is a forward reference for the value, see if we already created a
972 // forward ref record.
974 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
975 I = ForwardRefVals.find(Name);
976 if (I != ForwardRefVals.end())
977 Val = I->second.first;
980 // If we have the value in the symbol table or fwd-ref table, return it.
982 if (Val->getType() == Ty) return Val;
983 Error(Loc, "'@" + Name + "' defined with type '" +
984 getTypeString(Val->getType()) + "'");
988 // Otherwise, create a new forward reference for this value and remember it.
990 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
991 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
993 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
994 GlobalValue::ExternalWeakLinkage, 0, Name,
995 0, GlobalVariable::NotThreadLocal,
996 PTy->getAddressSpace());
998 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1002 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1003 PointerType *PTy = dyn_cast<PointerType>(Ty);
1005 Error(Loc, "global variable reference must have pointer type");
1009 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1011 // If this is a forward reference for the value, see if we already created a
1012 // forward ref record.
1014 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1015 I = ForwardRefValIDs.find(ID);
1016 if (I != ForwardRefValIDs.end())
1017 Val = I->second.first;
1020 // If we have the value in the symbol table or fwd-ref table, return it.
1022 if (Val->getType() == Ty) return Val;
1023 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1024 getTypeString(Val->getType()) + "'");
1028 // Otherwise, create a new forward reference for this value and remember it.
1029 GlobalValue *FwdVal;
1030 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1031 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1033 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1034 GlobalValue::ExternalWeakLinkage, 0, "");
1036 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1041 //===----------------------------------------------------------------------===//
1043 //===----------------------------------------------------------------------===//
1045 /// ParseToken - If the current token has the specified kind, eat it and return
1046 /// success. Otherwise, emit the specified error and return failure.
1047 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1048 if (Lex.getKind() != T)
1049 return TokError(ErrMsg);
1054 /// ParseStringConstant
1055 /// ::= StringConstant
1056 bool LLParser::ParseStringConstant(std::string &Result) {
1057 if (Lex.getKind() != lltok::StringConstant)
1058 return TokError("expected string constant");
1059 Result = Lex.getStrVal();
1066 bool LLParser::ParseUInt32(unsigned &Val) {
1067 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1068 return TokError("expected integer");
1069 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1070 if (Val64 != unsigned(Val64))
1071 return TokError("expected 32-bit integer (too large)");
1078 /// := 'localdynamic'
1079 /// := 'initialexec'
1081 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1082 switch (Lex.getKind()) {
1084 return TokError("expected localdynamic, initialexec or localexec");
1085 case lltok::kw_localdynamic:
1086 TLM = GlobalVariable::LocalDynamicTLSModel;
1088 case lltok::kw_initialexec:
1089 TLM = GlobalVariable::InitialExecTLSModel;
1091 case lltok::kw_localexec:
1092 TLM = GlobalVariable::LocalExecTLSModel;
1100 /// ParseOptionalThreadLocal
1102 /// := 'thread_local'
1103 /// := 'thread_local' '(' tlsmodel ')'
1104 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1105 TLM = GlobalVariable::NotThreadLocal;
1106 if (!EatIfPresent(lltok::kw_thread_local))
1109 TLM = GlobalVariable::GeneralDynamicTLSModel;
1110 if (Lex.getKind() == lltok::lparen) {
1112 return ParseTLSModel(TLM) ||
1113 ParseToken(lltok::rparen, "expected ')' after thread local model");
1118 /// ParseOptionalAddrSpace
1120 /// := 'addrspace' '(' uint32 ')'
1121 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1123 if (!EatIfPresent(lltok::kw_addrspace))
1125 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1126 ParseUInt32(AddrSpace) ||
1127 ParseToken(lltok::rparen, "expected ')' in address space");
1130 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1131 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1132 bool HaveError = false;
1137 lltok::Kind Token = Lex.getKind();
1139 default: // End of attributes.
1141 case lltok::kw_align: {
1143 if (ParseOptionalAlignment(Alignment))
1145 B.addAlignmentAttr(Alignment);
1148 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1149 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1150 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1151 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1152 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1153 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1154 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1155 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1157 case lltok::kw_noreturn: case lltok::kw_nounwind:
1158 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1159 case lltok::kw_noinline: case lltok::kw_readnone:
1160 case lltok::kw_readonly: case lltok::kw_inlinehint:
1161 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1162 case lltok::kw_ssp: case lltok::kw_sspreq:
1163 case lltok::kw_noredzone: case lltok::kw_noimplicitfloat:
1164 case lltok::kw_naked: case lltok::kw_nonlazybind:
1165 case lltok::kw_address_safety: case lltok::kw_minsize:
1166 case lltok::kw_alignstack: case lltok::kw_thread_safety:
1167 case lltok::kw_uninitialized_checks:
1168 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1176 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1177 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1178 bool HaveError = false;
1183 lltok::Kind Token = Lex.getKind();
1185 default: // End of attributes.
1187 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1188 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1189 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1190 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1193 case lltok::kw_sret: case lltok::kw_nocapture:
1194 case lltok::kw_byval: case lltok::kw_nest:
1195 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1198 case lltok::kw_noreturn: case lltok::kw_nounwind:
1199 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1200 case lltok::kw_noinline: case lltok::kw_readnone:
1201 case lltok::kw_readonly: case lltok::kw_inlinehint:
1202 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1203 case lltok::kw_ssp: case lltok::kw_sspreq:
1204 case lltok::kw_sspstrong: case lltok::kw_noimplicitfloat:
1205 case lltok::kw_noredzone: case lltok::kw_naked:
1206 case lltok::kw_nonlazybind: case lltok::kw_address_safety:
1207 case lltok::kw_minsize: case lltok::kw_alignstack:
1208 case lltok::kw_align: case lltok::kw_noduplicate:
1209 case lltok::kw_thread_safety: case lltok::kw_uninitialized_checks:
1210 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1218 /// ParseOptionalLinkage
1221 /// ::= 'linker_private'
1222 /// ::= 'linker_private_weak'
1227 /// ::= 'linkonce_odr'
1228 /// ::= 'linkonce_odr_auto_hide'
1229 /// ::= 'available_externally'
1234 /// ::= 'extern_weak'
1236 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1238 switch (Lex.getKind()) {
1239 default: Res=GlobalValue::ExternalLinkage; return false;
1240 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1241 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1242 case lltok::kw_linker_private_weak:
1243 Res = GlobalValue::LinkerPrivateWeakLinkage;
1245 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1246 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1247 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1248 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1249 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1250 case lltok::kw_linkonce_odr_auto_hide:
1251 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1252 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1254 case lltok::kw_available_externally:
1255 Res = GlobalValue::AvailableExternallyLinkage;
1257 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1258 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1259 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1260 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1261 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1262 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1269 /// ParseOptionalVisibility
1275 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1276 switch (Lex.getKind()) {
1277 default: Res = GlobalValue::DefaultVisibility; return false;
1278 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1279 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1280 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1286 /// ParseOptionalCallingConv
1290 /// ::= 'kw_intel_ocl_bicc'
1292 /// ::= 'x86_stdcallcc'
1293 /// ::= 'x86_fastcallcc'
1294 /// ::= 'x86_thiscallcc'
1295 /// ::= 'arm_apcscc'
1296 /// ::= 'arm_aapcscc'
1297 /// ::= 'arm_aapcs_vfpcc'
1298 /// ::= 'msp430_intrcc'
1299 /// ::= 'ptx_kernel'
1300 /// ::= 'ptx_device'
1302 /// ::= 'spir_kernel'
1305 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1306 switch (Lex.getKind()) {
1307 default: CC = CallingConv::C; return false;
1308 case lltok::kw_ccc: CC = CallingConv::C; break;
1309 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1310 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1311 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1312 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1313 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1314 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1315 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1316 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1317 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1318 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1319 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1320 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1321 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1322 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1323 case lltok::kw_cc: {
1324 unsigned ArbitraryCC;
1326 if (ParseUInt32(ArbitraryCC))
1328 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1337 /// ParseInstructionMetadata
1338 /// ::= !dbg !42 (',' !dbg !57)*
1339 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1340 PerFunctionState *PFS) {
1342 if (Lex.getKind() != lltok::MetadataVar)
1343 return TokError("expected metadata after comma");
1345 std::string Name = Lex.getStrVal();
1346 unsigned MDK = M->getMDKindID(Name);
1350 SMLoc Loc = Lex.getLoc();
1352 if (ParseToken(lltok::exclaim, "expected '!' here"))
1355 // This code is similar to that of ParseMetadataValue, however it needs to
1356 // have special-case code for a forward reference; see the comments on
1357 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1358 // at the top level here.
1359 if (Lex.getKind() == lltok::lbrace) {
1361 if (ParseMetadataListValue(ID, PFS))
1363 assert(ID.Kind == ValID::t_MDNode);
1364 Inst->setMetadata(MDK, ID.MDNodeVal);
1366 unsigned NodeID = 0;
1367 if (ParseMDNodeID(Node, NodeID))
1370 // If we got the node, add it to the instruction.
1371 Inst->setMetadata(MDK, Node);
1373 MDRef R = { Loc, MDK, NodeID };
1374 // Otherwise, remember that this should be resolved later.
1375 ForwardRefInstMetadata[Inst].push_back(R);
1379 // If this is the end of the list, we're done.
1380 } while (EatIfPresent(lltok::comma));
1384 /// ParseOptionalAlignment
1387 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1389 if (!EatIfPresent(lltok::kw_align))
1391 LocTy AlignLoc = Lex.getLoc();
1392 if (ParseUInt32(Alignment)) return true;
1393 if (!isPowerOf2_32(Alignment))
1394 return Error(AlignLoc, "alignment is not a power of two");
1395 if (Alignment > Value::MaximumAlignment)
1396 return Error(AlignLoc, "huge alignments are not supported yet");
1400 /// ParseOptionalCommaAlign
1404 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1406 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1407 bool &AteExtraComma) {
1408 AteExtraComma = false;
1409 while (EatIfPresent(lltok::comma)) {
1410 // Metadata at the end is an early exit.
1411 if (Lex.getKind() == lltok::MetadataVar) {
1412 AteExtraComma = true;
1416 if (Lex.getKind() != lltok::kw_align)
1417 return Error(Lex.getLoc(), "expected metadata or 'align'");
1419 if (ParseOptionalAlignment(Alignment)) return true;
1425 /// ParseScopeAndOrdering
1426 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1429 /// This sets Scope and Ordering to the parsed values.
1430 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1431 AtomicOrdering &Ordering) {
1435 Scope = CrossThread;
1436 if (EatIfPresent(lltok::kw_singlethread))
1437 Scope = SingleThread;
1438 switch (Lex.getKind()) {
1439 default: return TokError("Expected ordering on atomic instruction");
1440 case lltok::kw_unordered: Ordering = Unordered; break;
1441 case lltok::kw_monotonic: Ordering = Monotonic; break;
1442 case lltok::kw_acquire: Ordering = Acquire; break;
1443 case lltok::kw_release: Ordering = Release; break;
1444 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1445 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1451 /// ParseOptionalStackAlignment
1453 /// ::= 'alignstack' '(' 4 ')'
1454 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1456 if (!EatIfPresent(lltok::kw_alignstack))
1458 LocTy ParenLoc = Lex.getLoc();
1459 if (!EatIfPresent(lltok::lparen))
1460 return Error(ParenLoc, "expected '('");
1461 LocTy AlignLoc = Lex.getLoc();
1462 if (ParseUInt32(Alignment)) return true;
1463 ParenLoc = Lex.getLoc();
1464 if (!EatIfPresent(lltok::rparen))
1465 return Error(ParenLoc, "expected ')'");
1466 if (!isPowerOf2_32(Alignment))
1467 return Error(AlignLoc, "stack alignment is not a power of two");
1471 /// ParseIndexList - This parses the index list for an insert/extractvalue
1472 /// instruction. This sets AteExtraComma in the case where we eat an extra
1473 /// comma at the end of the line and find that it is followed by metadata.
1474 /// Clients that don't allow metadata can call the version of this function that
1475 /// only takes one argument.
1478 /// ::= (',' uint32)+
1480 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1481 bool &AteExtraComma) {
1482 AteExtraComma = false;
1484 if (Lex.getKind() != lltok::comma)
1485 return TokError("expected ',' as start of index list");
1487 while (EatIfPresent(lltok::comma)) {
1488 if (Lex.getKind() == lltok::MetadataVar) {
1489 AteExtraComma = true;
1493 if (ParseUInt32(Idx)) return true;
1494 Indices.push_back(Idx);
1500 //===----------------------------------------------------------------------===//
1502 //===----------------------------------------------------------------------===//
1504 /// ParseType - Parse a type.
1505 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1506 SMLoc TypeLoc = Lex.getLoc();
1507 switch (Lex.getKind()) {
1509 return TokError("expected type");
1511 // Type ::= 'float' | 'void' (etc)
1512 Result = Lex.getTyVal();
1516 // Type ::= StructType
1517 if (ParseAnonStructType(Result, false))
1520 case lltok::lsquare:
1521 // Type ::= '[' ... ']'
1522 Lex.Lex(); // eat the lsquare.
1523 if (ParseArrayVectorType(Result, false))
1526 case lltok::less: // Either vector or packed struct.
1527 // Type ::= '<' ... '>'
1529 if (Lex.getKind() == lltok::lbrace) {
1530 if (ParseAnonStructType(Result, true) ||
1531 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1533 } else if (ParseArrayVectorType(Result, true))
1536 case lltok::LocalVar: {
1538 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1540 // If the type hasn't been defined yet, create a forward definition and
1541 // remember where that forward def'n was seen (in case it never is defined).
1542 if (Entry.first == 0) {
1543 Entry.first = StructType::create(Context, Lex.getStrVal());
1544 Entry.second = Lex.getLoc();
1546 Result = Entry.first;
1551 case lltok::LocalVarID: {
1553 if (Lex.getUIntVal() >= NumberedTypes.size())
1554 NumberedTypes.resize(Lex.getUIntVal()+1);
1555 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1557 // If the type hasn't been defined yet, create a forward definition and
1558 // remember where that forward def'n was seen (in case it never is defined).
1559 if (Entry.first == 0) {
1560 Entry.first = StructType::create(Context);
1561 Entry.second = Lex.getLoc();
1563 Result = Entry.first;
1569 // Parse the type suffixes.
1571 switch (Lex.getKind()) {
1574 if (!AllowVoid && Result->isVoidTy())
1575 return Error(TypeLoc, "void type only allowed for function results");
1578 // Type ::= Type '*'
1580 if (Result->isLabelTy())
1581 return TokError("basic block pointers are invalid");
1582 if (Result->isVoidTy())
1583 return TokError("pointers to void are invalid - use i8* instead");
1584 if (!PointerType::isValidElementType(Result))
1585 return TokError("pointer to this type is invalid");
1586 Result = PointerType::getUnqual(Result);
1590 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1591 case lltok::kw_addrspace: {
1592 if (Result->isLabelTy())
1593 return TokError("basic block pointers are invalid");
1594 if (Result->isVoidTy())
1595 return TokError("pointers to void are invalid; use i8* instead");
1596 if (!PointerType::isValidElementType(Result))
1597 return TokError("pointer to this type is invalid");
1599 if (ParseOptionalAddrSpace(AddrSpace) ||
1600 ParseToken(lltok::star, "expected '*' in address space"))
1603 Result = PointerType::get(Result, AddrSpace);
1607 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1609 if (ParseFunctionType(Result))
1616 /// ParseParameterList
1618 /// ::= '(' Arg (',' Arg)* ')'
1620 /// ::= Type OptionalAttributes Value OptionalAttributes
1621 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1622 PerFunctionState &PFS) {
1623 if (ParseToken(lltok::lparen, "expected '(' in call"))
1626 unsigned AttrIndex = 1;
1627 while (Lex.getKind() != lltok::rparen) {
1628 // If this isn't the first argument, we need a comma.
1629 if (!ArgList.empty() &&
1630 ParseToken(lltok::comma, "expected ',' in argument list"))
1633 // Parse the argument.
1636 AttrBuilder ArgAttrs;
1638 if (ParseType(ArgTy, ArgLoc))
1641 // Otherwise, handle normal operands.
1642 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1644 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1649 Lex.Lex(); // Lex the ')'.
1655 /// ParseArgumentList - Parse the argument list for a function type or function
1657 /// ::= '(' ArgTypeListI ')'
1661 /// ::= ArgTypeList ',' '...'
1662 /// ::= ArgType (',' ArgType)*
1664 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1667 assert(Lex.getKind() == lltok::lparen);
1668 Lex.Lex(); // eat the (.
1670 if (Lex.getKind() == lltok::rparen) {
1672 } else if (Lex.getKind() == lltok::dotdotdot) {
1676 LocTy TypeLoc = Lex.getLoc();
1681 if (ParseType(ArgTy) ||
1682 ParseOptionalParamAttrs(Attrs)) return true;
1684 if (ArgTy->isVoidTy())
1685 return Error(TypeLoc, "argument can not have void type");
1687 if (Lex.getKind() == lltok::LocalVar) {
1688 Name = Lex.getStrVal();
1692 if (!FunctionType::isValidArgumentType(ArgTy))
1693 return Error(TypeLoc, "invalid type for function argument");
1695 unsigned AttrIndex = 1;
1696 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1697 AttributeSet::get(ArgTy->getContext(),
1698 AttrIndex++, Attrs), Name));
1700 while (EatIfPresent(lltok::comma)) {
1701 // Handle ... at end of arg list.
1702 if (EatIfPresent(lltok::dotdotdot)) {
1707 // Otherwise must be an argument type.
1708 TypeLoc = Lex.getLoc();
1709 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1711 if (ArgTy->isVoidTy())
1712 return Error(TypeLoc, "argument can not have void type");
1714 if (Lex.getKind() == lltok::LocalVar) {
1715 Name = Lex.getStrVal();
1721 if (!ArgTy->isFirstClassType())
1722 return Error(TypeLoc, "invalid type for function argument");
1724 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1725 AttributeSet::get(ArgTy->getContext(),
1726 AttrIndex++, Attrs),
1731 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1734 /// ParseFunctionType
1735 /// ::= Type ArgumentList OptionalAttrs
1736 bool LLParser::ParseFunctionType(Type *&Result) {
1737 assert(Lex.getKind() == lltok::lparen);
1739 if (!FunctionType::isValidReturnType(Result))
1740 return TokError("invalid function return type");
1742 SmallVector<ArgInfo, 8> ArgList;
1744 if (ParseArgumentList(ArgList, isVarArg))
1747 // Reject names on the arguments lists.
1748 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1749 if (!ArgList[i].Name.empty())
1750 return Error(ArgList[i].Loc, "argument name invalid in function type");
1751 if (ArgList[i].Attrs.hasAttributes(i + 1))
1752 return Error(ArgList[i].Loc,
1753 "argument attributes invalid in function type");
1756 SmallVector<Type*, 16> ArgListTy;
1757 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1758 ArgListTy.push_back(ArgList[i].Ty);
1760 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1764 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1766 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1767 SmallVector<Type*, 8> Elts;
1768 if (ParseStructBody(Elts)) return true;
1770 Result = StructType::get(Context, Elts, Packed);
1774 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1775 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1776 std::pair<Type*, LocTy> &Entry,
1778 // If the type was already defined, diagnose the redefinition.
1779 if (Entry.first && !Entry.second.isValid())
1780 return Error(TypeLoc, "redefinition of type");
1782 // If we have opaque, just return without filling in the definition for the
1783 // struct. This counts as a definition as far as the .ll file goes.
1784 if (EatIfPresent(lltok::kw_opaque)) {
1785 // This type is being defined, so clear the location to indicate this.
1786 Entry.second = SMLoc();
1788 // If this type number has never been uttered, create it.
1789 if (Entry.first == 0)
1790 Entry.first = StructType::create(Context, Name);
1791 ResultTy = Entry.first;
1795 // If the type starts with '<', then it is either a packed struct or a vector.
1796 bool isPacked = EatIfPresent(lltok::less);
1798 // If we don't have a struct, then we have a random type alias, which we
1799 // accept for compatibility with old files. These types are not allowed to be
1800 // forward referenced and not allowed to be recursive.
1801 if (Lex.getKind() != lltok::lbrace) {
1803 return Error(TypeLoc, "forward references to non-struct type");
1807 return ParseArrayVectorType(ResultTy, true);
1808 return ParseType(ResultTy);
1811 // This type is being defined, so clear the location to indicate this.
1812 Entry.second = SMLoc();
1814 // If this type number has never been uttered, create it.
1815 if (Entry.first == 0)
1816 Entry.first = StructType::create(Context, Name);
1818 StructType *STy = cast<StructType>(Entry.first);
1820 SmallVector<Type*, 8> Body;
1821 if (ParseStructBody(Body) ||
1822 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1825 STy->setBody(Body, isPacked);
1831 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1834 /// ::= '{' Type (',' Type)* '}'
1835 /// ::= '<' '{' '}' '>'
1836 /// ::= '<' '{' Type (',' Type)* '}' '>'
1837 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1838 assert(Lex.getKind() == lltok::lbrace);
1839 Lex.Lex(); // Consume the '{'
1841 // Handle the empty struct.
1842 if (EatIfPresent(lltok::rbrace))
1845 LocTy EltTyLoc = Lex.getLoc();
1847 if (ParseType(Ty)) return true;
1850 if (!StructType::isValidElementType(Ty))
1851 return Error(EltTyLoc, "invalid element type for struct");
1853 while (EatIfPresent(lltok::comma)) {
1854 EltTyLoc = Lex.getLoc();
1855 if (ParseType(Ty)) return true;
1857 if (!StructType::isValidElementType(Ty))
1858 return Error(EltTyLoc, "invalid element type for struct");
1863 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1866 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1867 /// token has already been consumed.
1869 /// ::= '[' APSINTVAL 'x' Types ']'
1870 /// ::= '<' APSINTVAL 'x' Types '>'
1871 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1872 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1873 Lex.getAPSIntVal().getBitWidth() > 64)
1874 return TokError("expected number in address space");
1876 LocTy SizeLoc = Lex.getLoc();
1877 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1880 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1883 LocTy TypeLoc = Lex.getLoc();
1885 if (ParseType(EltTy)) return true;
1887 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1888 "expected end of sequential type"))
1893 return Error(SizeLoc, "zero element vector is illegal");
1894 if ((unsigned)Size != Size)
1895 return Error(SizeLoc, "size too large for vector");
1896 if (!VectorType::isValidElementType(EltTy))
1897 return Error(TypeLoc, "invalid vector element type");
1898 Result = VectorType::get(EltTy, unsigned(Size));
1900 if (!ArrayType::isValidElementType(EltTy))
1901 return Error(TypeLoc, "invalid array element type");
1902 Result = ArrayType::get(EltTy, Size);
1907 //===----------------------------------------------------------------------===//
1908 // Function Semantic Analysis.
1909 //===----------------------------------------------------------------------===//
1911 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1913 : P(p), F(f), FunctionNumber(functionNumber) {
1915 // Insert unnamed arguments into the NumberedVals list.
1916 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1919 NumberedVals.push_back(AI);
1922 LLParser::PerFunctionState::~PerFunctionState() {
1923 // If there were any forward referenced non-basicblock values, delete them.
1924 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1925 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1926 if (!isa<BasicBlock>(I->second.first)) {
1927 I->second.first->replaceAllUsesWith(
1928 UndefValue::get(I->second.first->getType()));
1929 delete I->second.first;
1930 I->second.first = 0;
1933 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1934 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1935 if (!isa<BasicBlock>(I->second.first)) {
1936 I->second.first->replaceAllUsesWith(
1937 UndefValue::get(I->second.first->getType()));
1938 delete I->second.first;
1939 I->second.first = 0;
1943 bool LLParser::PerFunctionState::FinishFunction() {
1944 // Check to see if someone took the address of labels in this block.
1945 if (!P.ForwardRefBlockAddresses.empty()) {
1947 if (!F.getName().empty()) {
1948 FunctionID.Kind = ValID::t_GlobalName;
1949 FunctionID.StrVal = F.getName();
1951 FunctionID.Kind = ValID::t_GlobalID;
1952 FunctionID.UIntVal = FunctionNumber;
1955 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1956 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1957 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1958 // Resolve all these references.
1959 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1962 P.ForwardRefBlockAddresses.erase(FRBAI);
1966 if (!ForwardRefVals.empty())
1967 return P.Error(ForwardRefVals.begin()->second.second,
1968 "use of undefined value '%" + ForwardRefVals.begin()->first +
1970 if (!ForwardRefValIDs.empty())
1971 return P.Error(ForwardRefValIDs.begin()->second.second,
1972 "use of undefined value '%" +
1973 Twine(ForwardRefValIDs.begin()->first) + "'");
1978 /// GetVal - Get a value with the specified name or ID, creating a
1979 /// forward reference record if needed. This can return null if the value
1980 /// exists but does not have the right type.
1981 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1982 Type *Ty, LocTy Loc) {
1983 // Look this name up in the normal function symbol table.
1984 Value *Val = F.getValueSymbolTable().lookup(Name);
1986 // If this is a forward reference for the value, see if we already created a
1987 // forward ref record.
1989 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1990 I = ForwardRefVals.find(Name);
1991 if (I != ForwardRefVals.end())
1992 Val = I->second.first;
1995 // If we have the value in the symbol table or fwd-ref table, return it.
1997 if (Val->getType() == Ty) return Val;
1998 if (Ty->isLabelTy())
1999 P.Error(Loc, "'%" + Name + "' is not a basic block");
2001 P.Error(Loc, "'%" + Name + "' defined with type '" +
2002 getTypeString(Val->getType()) + "'");
2006 // Don't make placeholders with invalid type.
2007 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2008 P.Error(Loc, "invalid use of a non-first-class type");
2012 // Otherwise, create a new forward reference for this value and remember it.
2014 if (Ty->isLabelTy())
2015 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2017 FwdVal = new Argument(Ty, Name);
2019 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2023 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2025 // Look this name up in the normal function symbol table.
2026 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2028 // If this is a forward reference for the value, see if we already created a
2029 // forward ref record.
2031 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2032 I = ForwardRefValIDs.find(ID);
2033 if (I != ForwardRefValIDs.end())
2034 Val = I->second.first;
2037 // If we have the value in the symbol table or fwd-ref table, return it.
2039 if (Val->getType() == Ty) return Val;
2040 if (Ty->isLabelTy())
2041 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2043 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2044 getTypeString(Val->getType()) + "'");
2048 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2049 P.Error(Loc, "invalid use of a non-first-class type");
2053 // Otherwise, create a new forward reference for this value and remember it.
2055 if (Ty->isLabelTy())
2056 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2058 FwdVal = new Argument(Ty);
2060 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2064 /// SetInstName - After an instruction is parsed and inserted into its
2065 /// basic block, this installs its name.
2066 bool LLParser::PerFunctionState::SetInstName(int NameID,
2067 const std::string &NameStr,
2068 LocTy NameLoc, Instruction *Inst) {
2069 // If this instruction has void type, it cannot have a name or ID specified.
2070 if (Inst->getType()->isVoidTy()) {
2071 if (NameID != -1 || !NameStr.empty())
2072 return P.Error(NameLoc, "instructions returning void cannot have a name");
2076 // If this was a numbered instruction, verify that the instruction is the
2077 // expected value and resolve any forward references.
2078 if (NameStr.empty()) {
2079 // If neither a name nor an ID was specified, just use the next ID.
2081 NameID = NumberedVals.size();
2083 if (unsigned(NameID) != NumberedVals.size())
2084 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2085 Twine(NumberedVals.size()) + "'");
2087 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2088 ForwardRefValIDs.find(NameID);
2089 if (FI != ForwardRefValIDs.end()) {
2090 if (FI->second.first->getType() != Inst->getType())
2091 return P.Error(NameLoc, "instruction forward referenced with type '" +
2092 getTypeString(FI->second.first->getType()) + "'");
2093 FI->second.first->replaceAllUsesWith(Inst);
2094 delete FI->second.first;
2095 ForwardRefValIDs.erase(FI);
2098 NumberedVals.push_back(Inst);
2102 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2103 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2104 FI = ForwardRefVals.find(NameStr);
2105 if (FI != ForwardRefVals.end()) {
2106 if (FI->second.first->getType() != Inst->getType())
2107 return P.Error(NameLoc, "instruction forward referenced with type '" +
2108 getTypeString(FI->second.first->getType()) + "'");
2109 FI->second.first->replaceAllUsesWith(Inst);
2110 delete FI->second.first;
2111 ForwardRefVals.erase(FI);
2114 // Set the name on the instruction.
2115 Inst->setName(NameStr);
2117 if (Inst->getName() != NameStr)
2118 return P.Error(NameLoc, "multiple definition of local value named '" +
2123 /// GetBB - Get a basic block with the specified name or ID, creating a
2124 /// forward reference record if needed.
2125 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2127 return cast_or_null<BasicBlock>(GetVal(Name,
2128 Type::getLabelTy(F.getContext()), Loc));
2131 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2132 return cast_or_null<BasicBlock>(GetVal(ID,
2133 Type::getLabelTy(F.getContext()), Loc));
2136 /// DefineBB - Define the specified basic block, which is either named or
2137 /// unnamed. If there is an error, this returns null otherwise it returns
2138 /// the block being defined.
2139 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2143 BB = GetBB(NumberedVals.size(), Loc);
2145 BB = GetBB(Name, Loc);
2146 if (BB == 0) return 0; // Already diagnosed error.
2148 // Move the block to the end of the function. Forward ref'd blocks are
2149 // inserted wherever they happen to be referenced.
2150 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2152 // Remove the block from forward ref sets.
2154 ForwardRefValIDs.erase(NumberedVals.size());
2155 NumberedVals.push_back(BB);
2157 // BB forward references are already in the function symbol table.
2158 ForwardRefVals.erase(Name);
2164 //===----------------------------------------------------------------------===//
2166 //===----------------------------------------------------------------------===//
2168 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2169 /// type implied. For example, if we parse "4" we don't know what integer type
2170 /// it has. The value will later be combined with its type and checked for
2171 /// sanity. PFS is used to convert function-local operands of metadata (since
2172 /// metadata operands are not just parsed here but also converted to values).
2173 /// PFS can be null when we are not parsing metadata values inside a function.
2174 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2175 ID.Loc = Lex.getLoc();
2176 switch (Lex.getKind()) {
2177 default: return TokError("expected value token");
2178 case lltok::GlobalID: // @42
2179 ID.UIntVal = Lex.getUIntVal();
2180 ID.Kind = ValID::t_GlobalID;
2182 case lltok::GlobalVar: // @foo
2183 ID.StrVal = Lex.getStrVal();
2184 ID.Kind = ValID::t_GlobalName;
2186 case lltok::LocalVarID: // %42
2187 ID.UIntVal = Lex.getUIntVal();
2188 ID.Kind = ValID::t_LocalID;
2190 case lltok::LocalVar: // %foo
2191 ID.StrVal = Lex.getStrVal();
2192 ID.Kind = ValID::t_LocalName;
2194 case lltok::exclaim: // !42, !{...}, or !"foo"
2195 return ParseMetadataValue(ID, PFS);
2197 ID.APSIntVal = Lex.getAPSIntVal();
2198 ID.Kind = ValID::t_APSInt;
2200 case lltok::APFloat:
2201 ID.APFloatVal = Lex.getAPFloatVal();
2202 ID.Kind = ValID::t_APFloat;
2204 case lltok::kw_true:
2205 ID.ConstantVal = ConstantInt::getTrue(Context);
2206 ID.Kind = ValID::t_Constant;
2208 case lltok::kw_false:
2209 ID.ConstantVal = ConstantInt::getFalse(Context);
2210 ID.Kind = ValID::t_Constant;
2212 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2213 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2214 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2216 case lltok::lbrace: {
2217 // ValID ::= '{' ConstVector '}'
2219 SmallVector<Constant*, 16> Elts;
2220 if (ParseGlobalValueVector(Elts) ||
2221 ParseToken(lltok::rbrace, "expected end of struct constant"))
2224 ID.ConstantStructElts = new Constant*[Elts.size()];
2225 ID.UIntVal = Elts.size();
2226 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2227 ID.Kind = ValID::t_ConstantStruct;
2231 // ValID ::= '<' ConstVector '>' --> Vector.
2232 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2234 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2236 SmallVector<Constant*, 16> Elts;
2237 LocTy FirstEltLoc = Lex.getLoc();
2238 if (ParseGlobalValueVector(Elts) ||
2240 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2241 ParseToken(lltok::greater, "expected end of constant"))
2244 if (isPackedStruct) {
2245 ID.ConstantStructElts = new Constant*[Elts.size()];
2246 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2247 ID.UIntVal = Elts.size();
2248 ID.Kind = ValID::t_PackedConstantStruct;
2253 return Error(ID.Loc, "constant vector must not be empty");
2255 if (!Elts[0]->getType()->isIntegerTy() &&
2256 !Elts[0]->getType()->isFloatingPointTy() &&
2257 !Elts[0]->getType()->isPointerTy())
2258 return Error(FirstEltLoc,
2259 "vector elements must have integer, pointer or floating point type");
2261 // Verify that all the vector elements have the same type.
2262 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2263 if (Elts[i]->getType() != Elts[0]->getType())
2264 return Error(FirstEltLoc,
2265 "vector element #" + Twine(i) +
2266 " is not of type '" + getTypeString(Elts[0]->getType()));
2268 ID.ConstantVal = ConstantVector::get(Elts);
2269 ID.Kind = ValID::t_Constant;
2272 case lltok::lsquare: { // Array Constant
2274 SmallVector<Constant*, 16> Elts;
2275 LocTy FirstEltLoc = Lex.getLoc();
2276 if (ParseGlobalValueVector(Elts) ||
2277 ParseToken(lltok::rsquare, "expected end of array constant"))
2280 // Handle empty element.
2282 // Use undef instead of an array because it's inconvenient to determine
2283 // the element type at this point, there being no elements to examine.
2284 ID.Kind = ValID::t_EmptyArray;
2288 if (!Elts[0]->getType()->isFirstClassType())
2289 return Error(FirstEltLoc, "invalid array element type: " +
2290 getTypeString(Elts[0]->getType()));
2292 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2294 // Verify all elements are correct type!
2295 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2296 if (Elts[i]->getType() != Elts[0]->getType())
2297 return Error(FirstEltLoc,
2298 "array element #" + Twine(i) +
2299 " is not of type '" + getTypeString(Elts[0]->getType()));
2302 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2303 ID.Kind = ValID::t_Constant;
2306 case lltok::kw_c: // c "foo"
2308 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2310 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2311 ID.Kind = ValID::t_Constant;
2314 case lltok::kw_asm: {
2315 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2316 bool HasSideEffect, AlignStack, AsmDialect;
2318 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2319 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2320 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2321 ParseStringConstant(ID.StrVal) ||
2322 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2323 ParseToken(lltok::StringConstant, "expected constraint string"))
2325 ID.StrVal2 = Lex.getStrVal();
2326 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2327 (unsigned(AsmDialect)<<2);
2328 ID.Kind = ValID::t_InlineAsm;
2332 case lltok::kw_blockaddress: {
2333 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2337 LocTy FnLoc, LabelLoc;
2339 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2341 ParseToken(lltok::comma, "expected comma in block address expression")||
2342 ParseValID(Label) ||
2343 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2346 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2347 return Error(Fn.Loc, "expected function name in blockaddress");
2348 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2349 return Error(Label.Loc, "expected basic block name in blockaddress");
2351 // Make a global variable as a placeholder for this reference.
2352 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2353 false, GlobalValue::InternalLinkage,
2355 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2356 ID.ConstantVal = FwdRef;
2357 ID.Kind = ValID::t_Constant;
2361 case lltok::kw_trunc:
2362 case lltok::kw_zext:
2363 case lltok::kw_sext:
2364 case lltok::kw_fptrunc:
2365 case lltok::kw_fpext:
2366 case lltok::kw_bitcast:
2367 case lltok::kw_uitofp:
2368 case lltok::kw_sitofp:
2369 case lltok::kw_fptoui:
2370 case lltok::kw_fptosi:
2371 case lltok::kw_inttoptr:
2372 case lltok::kw_ptrtoint: {
2373 unsigned Opc = Lex.getUIntVal();
2377 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2378 ParseGlobalTypeAndValue(SrcVal) ||
2379 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2380 ParseType(DestTy) ||
2381 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2383 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2384 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2385 getTypeString(SrcVal->getType()) + "' to '" +
2386 getTypeString(DestTy) + "'");
2387 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2389 ID.Kind = ValID::t_Constant;
2392 case lltok::kw_extractvalue: {
2395 SmallVector<unsigned, 4> Indices;
2396 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2397 ParseGlobalTypeAndValue(Val) ||
2398 ParseIndexList(Indices) ||
2399 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2402 if (!Val->getType()->isAggregateType())
2403 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2404 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2405 return Error(ID.Loc, "invalid indices for extractvalue");
2406 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2407 ID.Kind = ValID::t_Constant;
2410 case lltok::kw_insertvalue: {
2412 Constant *Val0, *Val1;
2413 SmallVector<unsigned, 4> Indices;
2414 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2415 ParseGlobalTypeAndValue(Val0) ||
2416 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2417 ParseGlobalTypeAndValue(Val1) ||
2418 ParseIndexList(Indices) ||
2419 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2421 if (!Val0->getType()->isAggregateType())
2422 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2423 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2424 return Error(ID.Loc, "invalid indices for insertvalue");
2425 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2426 ID.Kind = ValID::t_Constant;
2429 case lltok::kw_icmp:
2430 case lltok::kw_fcmp: {
2431 unsigned PredVal, Opc = Lex.getUIntVal();
2432 Constant *Val0, *Val1;
2434 if (ParseCmpPredicate(PredVal, Opc) ||
2435 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2436 ParseGlobalTypeAndValue(Val0) ||
2437 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2438 ParseGlobalTypeAndValue(Val1) ||
2439 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2442 if (Val0->getType() != Val1->getType())
2443 return Error(ID.Loc, "compare operands must have the same type");
2445 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2447 if (Opc == Instruction::FCmp) {
2448 if (!Val0->getType()->isFPOrFPVectorTy())
2449 return Error(ID.Loc, "fcmp requires floating point operands");
2450 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2452 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2453 if (!Val0->getType()->isIntOrIntVectorTy() &&
2454 !Val0->getType()->getScalarType()->isPointerTy())
2455 return Error(ID.Loc, "icmp requires pointer or integer operands");
2456 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2458 ID.Kind = ValID::t_Constant;
2462 // Binary Operators.
2464 case lltok::kw_fadd:
2466 case lltok::kw_fsub:
2468 case lltok::kw_fmul:
2469 case lltok::kw_udiv:
2470 case lltok::kw_sdiv:
2471 case lltok::kw_fdiv:
2472 case lltok::kw_urem:
2473 case lltok::kw_srem:
2474 case lltok::kw_frem:
2476 case lltok::kw_lshr:
2477 case lltok::kw_ashr: {
2481 unsigned Opc = Lex.getUIntVal();
2482 Constant *Val0, *Val1;
2484 LocTy ModifierLoc = Lex.getLoc();
2485 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2486 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2487 if (EatIfPresent(lltok::kw_nuw))
2489 if (EatIfPresent(lltok::kw_nsw)) {
2491 if (EatIfPresent(lltok::kw_nuw))
2494 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2495 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2496 if (EatIfPresent(lltok::kw_exact))
2499 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2500 ParseGlobalTypeAndValue(Val0) ||
2501 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2502 ParseGlobalTypeAndValue(Val1) ||
2503 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2505 if (Val0->getType() != Val1->getType())
2506 return Error(ID.Loc, "operands of constexpr must have same type");
2507 if (!Val0->getType()->isIntOrIntVectorTy()) {
2509 return Error(ModifierLoc, "nuw only applies to integer operations");
2511 return Error(ModifierLoc, "nsw only applies to integer operations");
2513 // Check that the type is valid for the operator.
2515 case Instruction::Add:
2516 case Instruction::Sub:
2517 case Instruction::Mul:
2518 case Instruction::UDiv:
2519 case Instruction::SDiv:
2520 case Instruction::URem:
2521 case Instruction::SRem:
2522 case Instruction::Shl:
2523 case Instruction::AShr:
2524 case Instruction::LShr:
2525 if (!Val0->getType()->isIntOrIntVectorTy())
2526 return Error(ID.Loc, "constexpr requires integer operands");
2528 case Instruction::FAdd:
2529 case Instruction::FSub:
2530 case Instruction::FMul:
2531 case Instruction::FDiv:
2532 case Instruction::FRem:
2533 if (!Val0->getType()->isFPOrFPVectorTy())
2534 return Error(ID.Loc, "constexpr requires fp operands");
2536 default: llvm_unreachable("Unknown binary operator!");
2539 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2540 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2541 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2542 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2544 ID.Kind = ValID::t_Constant;
2548 // Logical Operations
2551 case lltok::kw_xor: {
2552 unsigned Opc = Lex.getUIntVal();
2553 Constant *Val0, *Val1;
2555 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2556 ParseGlobalTypeAndValue(Val0) ||
2557 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2558 ParseGlobalTypeAndValue(Val1) ||
2559 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2561 if (Val0->getType() != Val1->getType())
2562 return Error(ID.Loc, "operands of constexpr must have same type");
2563 if (!Val0->getType()->isIntOrIntVectorTy())
2564 return Error(ID.Loc,
2565 "constexpr requires integer or integer vector operands");
2566 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2567 ID.Kind = ValID::t_Constant;
2571 case lltok::kw_getelementptr:
2572 case lltok::kw_shufflevector:
2573 case lltok::kw_insertelement:
2574 case lltok::kw_extractelement:
2575 case lltok::kw_select: {
2576 unsigned Opc = Lex.getUIntVal();
2577 SmallVector<Constant*, 16> Elts;
2578 bool InBounds = false;
2580 if (Opc == Instruction::GetElementPtr)
2581 InBounds = EatIfPresent(lltok::kw_inbounds);
2582 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2583 ParseGlobalValueVector(Elts) ||
2584 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2587 if (Opc == Instruction::GetElementPtr) {
2588 if (Elts.size() == 0 ||
2589 !Elts[0]->getType()->getScalarType()->isPointerTy())
2590 return Error(ID.Loc, "getelementptr requires pointer operand");
2592 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2593 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2594 return Error(ID.Loc, "invalid indices for getelementptr");
2595 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2597 } else if (Opc == Instruction::Select) {
2598 if (Elts.size() != 3)
2599 return Error(ID.Loc, "expected three operands to select");
2600 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2602 return Error(ID.Loc, Reason);
2603 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2604 } else if (Opc == Instruction::ShuffleVector) {
2605 if (Elts.size() != 3)
2606 return Error(ID.Loc, "expected three operands to shufflevector");
2607 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2608 return Error(ID.Loc, "invalid operands to shufflevector");
2610 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2611 } else if (Opc == Instruction::ExtractElement) {
2612 if (Elts.size() != 2)
2613 return Error(ID.Loc, "expected two operands to extractelement");
2614 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2615 return Error(ID.Loc, "invalid extractelement operands");
2616 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2618 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2619 if (Elts.size() != 3)
2620 return Error(ID.Loc, "expected three operands to insertelement");
2621 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2622 return Error(ID.Loc, "invalid insertelement operands");
2624 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2627 ID.Kind = ValID::t_Constant;
2636 /// ParseGlobalValue - Parse a global value with the specified type.
2637 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2641 bool Parsed = ParseValID(ID) ||
2642 ConvertValIDToValue(Ty, ID, V, NULL);
2643 if (V && !(C = dyn_cast<Constant>(V)))
2644 return Error(ID.Loc, "global values must be constants");
2648 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2650 return ParseType(Ty) ||
2651 ParseGlobalValue(Ty, V);
2654 /// ParseGlobalValueVector
2656 /// ::= TypeAndValue (',' TypeAndValue)*
2657 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2659 if (Lex.getKind() == lltok::rbrace ||
2660 Lex.getKind() == lltok::rsquare ||
2661 Lex.getKind() == lltok::greater ||
2662 Lex.getKind() == lltok::rparen)
2666 if (ParseGlobalTypeAndValue(C)) return true;
2669 while (EatIfPresent(lltok::comma)) {
2670 if (ParseGlobalTypeAndValue(C)) return true;
2677 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2678 assert(Lex.getKind() == lltok::lbrace);
2681 SmallVector<Value*, 16> Elts;
2682 if (ParseMDNodeVector(Elts, PFS) ||
2683 ParseToken(lltok::rbrace, "expected end of metadata node"))
2686 ID.MDNodeVal = MDNode::get(Context, Elts);
2687 ID.Kind = ValID::t_MDNode;
2691 /// ParseMetadataValue
2695 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2696 assert(Lex.getKind() == lltok::exclaim);
2701 if (Lex.getKind() == lltok::lbrace)
2702 return ParseMetadataListValue(ID, PFS);
2704 // Standalone metadata reference
2706 if (Lex.getKind() == lltok::APSInt) {
2707 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2708 ID.Kind = ValID::t_MDNode;
2713 // ::= '!' STRINGCONSTANT
2714 if (ParseMDString(ID.MDStringVal)) return true;
2715 ID.Kind = ValID::t_MDString;
2720 //===----------------------------------------------------------------------===//
2721 // Function Parsing.
2722 //===----------------------------------------------------------------------===//
2724 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2725 PerFunctionState *PFS) {
2726 if (Ty->isFunctionTy())
2727 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2730 case ValID::t_LocalID:
2731 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2732 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2734 case ValID::t_LocalName:
2735 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2736 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2738 case ValID::t_InlineAsm: {
2739 PointerType *PTy = dyn_cast<PointerType>(Ty);
2741 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2742 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2743 return Error(ID.Loc, "invalid type for inline asm constraint string");
2744 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2745 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2748 case ValID::t_MDNode:
2749 if (!Ty->isMetadataTy())
2750 return Error(ID.Loc, "metadata value must have metadata type");
2753 case ValID::t_MDString:
2754 if (!Ty->isMetadataTy())
2755 return Error(ID.Loc, "metadata value must have metadata type");
2758 case ValID::t_GlobalName:
2759 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2761 case ValID::t_GlobalID:
2762 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2764 case ValID::t_APSInt:
2765 if (!Ty->isIntegerTy())
2766 return Error(ID.Loc, "integer constant must have integer type");
2767 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2768 V = ConstantInt::get(Context, ID.APSIntVal);
2770 case ValID::t_APFloat:
2771 if (!Ty->isFloatingPointTy() ||
2772 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2773 return Error(ID.Loc, "floating point constant invalid for type");
2775 // The lexer has no type info, so builds all half, float, and double FP
2776 // constants as double. Fix this here. Long double does not need this.
2777 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2780 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2782 else if (Ty->isFloatTy())
2783 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2786 V = ConstantFP::get(Context, ID.APFloatVal);
2788 if (V->getType() != Ty)
2789 return Error(ID.Loc, "floating point constant does not have type '" +
2790 getTypeString(Ty) + "'");
2794 if (!Ty->isPointerTy())
2795 return Error(ID.Loc, "null must be a pointer type");
2796 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2798 case ValID::t_Undef:
2799 // FIXME: LabelTy should not be a first-class type.
2800 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2801 return Error(ID.Loc, "invalid type for undef constant");
2802 V = UndefValue::get(Ty);
2804 case ValID::t_EmptyArray:
2805 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2806 return Error(ID.Loc, "invalid empty array initializer");
2807 V = UndefValue::get(Ty);
2810 // FIXME: LabelTy should not be a first-class type.
2811 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2812 return Error(ID.Loc, "invalid type for null constant");
2813 V = Constant::getNullValue(Ty);
2815 case ValID::t_Constant:
2816 if (ID.ConstantVal->getType() != Ty)
2817 return Error(ID.Loc, "constant expression type mismatch");
2821 case ValID::t_ConstantStruct:
2822 case ValID::t_PackedConstantStruct:
2823 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2824 if (ST->getNumElements() != ID.UIntVal)
2825 return Error(ID.Loc,
2826 "initializer with struct type has wrong # elements");
2827 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2828 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2830 // Verify that the elements are compatible with the structtype.
2831 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2832 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2833 return Error(ID.Loc, "element " + Twine(i) +
2834 " of struct initializer doesn't match struct element type");
2836 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2839 return Error(ID.Loc, "constant expression type mismatch");
2842 llvm_unreachable("Invalid ValID");
2845 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2848 return ParseValID(ID, PFS) ||
2849 ConvertValIDToValue(Ty, ID, V, PFS);
2852 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2854 return ParseType(Ty) ||
2855 ParseValue(Ty, V, PFS);
2858 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2859 PerFunctionState &PFS) {
2862 if (ParseTypeAndValue(V, PFS)) return true;
2863 if (!isa<BasicBlock>(V))
2864 return Error(Loc, "expected a basic block");
2865 BB = cast<BasicBlock>(V);
2871 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2872 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2873 /// OptionalAlign OptGC
2874 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2875 // Parse the linkage.
2876 LocTy LinkageLoc = Lex.getLoc();
2879 unsigned Visibility;
2880 AttrBuilder RetAttrs;
2883 LocTy RetTypeLoc = Lex.getLoc();
2884 if (ParseOptionalLinkage(Linkage) ||
2885 ParseOptionalVisibility(Visibility) ||
2886 ParseOptionalCallingConv(CC) ||
2887 ParseOptionalReturnAttrs(RetAttrs) ||
2888 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2891 // Verify that the linkage is ok.
2892 switch ((GlobalValue::LinkageTypes)Linkage) {
2893 case GlobalValue::ExternalLinkage:
2894 break; // always ok.
2895 case GlobalValue::DLLImportLinkage:
2896 case GlobalValue::ExternalWeakLinkage:
2898 return Error(LinkageLoc, "invalid linkage for function definition");
2900 case GlobalValue::PrivateLinkage:
2901 case GlobalValue::LinkerPrivateLinkage:
2902 case GlobalValue::LinkerPrivateWeakLinkage:
2903 case GlobalValue::InternalLinkage:
2904 case GlobalValue::AvailableExternallyLinkage:
2905 case GlobalValue::LinkOnceAnyLinkage:
2906 case GlobalValue::LinkOnceODRLinkage:
2907 case GlobalValue::LinkOnceODRAutoHideLinkage:
2908 case GlobalValue::WeakAnyLinkage:
2909 case GlobalValue::WeakODRLinkage:
2910 case GlobalValue::DLLExportLinkage:
2912 return Error(LinkageLoc, "invalid linkage for function declaration");
2914 case GlobalValue::AppendingLinkage:
2915 case GlobalValue::CommonLinkage:
2916 return Error(LinkageLoc, "invalid function linkage type");
2919 if (!FunctionType::isValidReturnType(RetType))
2920 return Error(RetTypeLoc, "invalid function return type");
2922 LocTy NameLoc = Lex.getLoc();
2924 std::string FunctionName;
2925 if (Lex.getKind() == lltok::GlobalVar) {
2926 FunctionName = Lex.getStrVal();
2927 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2928 unsigned NameID = Lex.getUIntVal();
2930 if (NameID != NumberedVals.size())
2931 return TokError("function expected to be numbered '%" +
2932 Twine(NumberedVals.size()) + "'");
2934 return TokError("expected function name");
2939 if (Lex.getKind() != lltok::lparen)
2940 return TokError("expected '(' in function argument list");
2942 SmallVector<ArgInfo, 8> ArgList;
2944 AttrBuilder FuncAttrs;
2945 std::vector<unsigned> FwdRefAttrGrps;
2946 std::string Section;
2950 LocTy UnnamedAddrLoc;
2952 if (ParseArgumentList(ArgList, isVarArg) ||
2953 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2955 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false) ||
2956 (EatIfPresent(lltok::kw_section) &&
2957 ParseStringConstant(Section)) ||
2958 ParseOptionalAlignment(Alignment) ||
2959 (EatIfPresent(lltok::kw_gc) &&
2960 ParseStringConstant(GC)))
2963 // If the alignment was parsed as an attribute, move to the alignment field.
2964 if (FuncAttrs.hasAlignmentAttr()) {
2965 Alignment = FuncAttrs.getAlignment();
2966 FuncAttrs.removeAttribute(Attribute::Alignment);
2969 // Okay, if we got here, the function is syntactically valid. Convert types
2970 // and do semantic checks.
2971 std::vector<Type*> ParamTypeList;
2972 SmallVector<AttributeSet, 8> Attrs;
2974 if (RetAttrs.hasAttributes())
2975 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2976 AttributeSet::ReturnIndex,
2979 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2980 ParamTypeList.push_back(ArgList[i].Ty);
2981 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
2982 AttrBuilder B(ArgList[i].Attrs, i + 1);
2983 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
2987 if (FuncAttrs.hasAttributes())
2988 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2989 AttributeSet::FunctionIndex,
2992 AttributeSet PAL = AttributeSet::get(Context, Attrs);
2994 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
2995 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2998 FunctionType::get(RetType, ParamTypeList, isVarArg);
2999 PointerType *PFT = PointerType::getUnqual(FT);
3002 if (!FunctionName.empty()) {
3003 // If this was a definition of a forward reference, remove the definition
3004 // from the forward reference table and fill in the forward ref.
3005 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3006 ForwardRefVals.find(FunctionName);
3007 if (FRVI != ForwardRefVals.end()) {
3008 Fn = M->getFunction(FunctionName);
3010 return Error(FRVI->second.second, "invalid forward reference to "
3011 "function as global value!");
3012 if (Fn->getType() != PFT)
3013 return Error(FRVI->second.second, "invalid forward reference to "
3014 "function '" + FunctionName + "' with wrong type!");
3016 ForwardRefVals.erase(FRVI);
3017 } else if ((Fn = M->getFunction(FunctionName))) {
3018 // Reject redefinitions.
3019 return Error(NameLoc, "invalid redefinition of function '" +
3020 FunctionName + "'");
3021 } else if (M->getNamedValue(FunctionName)) {
3022 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3026 // If this is a definition of a forward referenced function, make sure the
3028 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3029 = ForwardRefValIDs.find(NumberedVals.size());
3030 if (I != ForwardRefValIDs.end()) {
3031 Fn = cast<Function>(I->second.first);
3032 if (Fn->getType() != PFT)
3033 return Error(NameLoc, "type of definition and forward reference of '@" +
3034 Twine(NumberedVals.size()) + "' disagree");
3035 ForwardRefValIDs.erase(I);
3040 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3041 else // Move the forward-reference to the correct spot in the module.
3042 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3044 if (FunctionName.empty())
3045 NumberedVals.push_back(Fn);
3047 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3048 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3049 Fn->setCallingConv(CC);
3050 Fn->setAttributes(PAL);
3051 Fn->setUnnamedAddr(UnnamedAddr);
3052 Fn->setAlignment(Alignment);
3053 Fn->setSection(Section);
3054 if (!GC.empty()) Fn->setGC(GC.c_str());
3055 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3057 // Add all of the arguments we parsed to the function.
3058 Function::arg_iterator ArgIt = Fn->arg_begin();
3059 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3060 // If the argument has a name, insert it into the argument symbol table.
3061 if (ArgList[i].Name.empty()) continue;
3063 // Set the name, if it conflicted, it will be auto-renamed.
3064 ArgIt->setName(ArgList[i].Name);
3066 if (ArgIt->getName() != ArgList[i].Name)
3067 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3068 ArgList[i].Name + "'");
3075 /// ParseFunctionBody
3076 /// ::= '{' BasicBlock+ '}'
3078 bool LLParser::ParseFunctionBody(Function &Fn) {
3079 if (Lex.getKind() != lltok::lbrace)
3080 return TokError("expected '{' in function body");
3081 Lex.Lex(); // eat the {.
3083 int FunctionNumber = -1;
3084 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3086 PerFunctionState PFS(*this, Fn, FunctionNumber);
3088 // We need at least one basic block.
3089 if (Lex.getKind() == lltok::rbrace)
3090 return TokError("function body requires at least one basic block");
3092 while (Lex.getKind() != lltok::rbrace)
3093 if (ParseBasicBlock(PFS)) return true;
3098 // Verify function is ok.
3099 return PFS.FinishFunction();
3103 /// ::= LabelStr? Instruction*
3104 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3105 // If this basic block starts out with a name, remember it.
3107 LocTy NameLoc = Lex.getLoc();
3108 if (Lex.getKind() == lltok::LabelStr) {
3109 Name = Lex.getStrVal();
3113 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3114 if (BB == 0) return true;
3116 std::string NameStr;
3118 // Parse the instructions in this block until we get a terminator.
3120 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3122 // This instruction may have three possibilities for a name: a) none
3123 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3124 LocTy NameLoc = Lex.getLoc();
3128 if (Lex.getKind() == lltok::LocalVarID) {
3129 NameID = Lex.getUIntVal();
3131 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3133 } else if (Lex.getKind() == lltok::LocalVar) {
3134 NameStr = Lex.getStrVal();
3136 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3140 switch (ParseInstruction(Inst, BB, PFS)) {
3141 default: llvm_unreachable("Unknown ParseInstruction result!");
3142 case InstError: return true;
3144 BB->getInstList().push_back(Inst);
3146 // With a normal result, we check to see if the instruction is followed by
3147 // a comma and metadata.
3148 if (EatIfPresent(lltok::comma))
3149 if (ParseInstructionMetadata(Inst, &PFS))
3152 case InstExtraComma:
3153 BB->getInstList().push_back(Inst);
3155 // If the instruction parser ate an extra comma at the end of it, it
3156 // *must* be followed by metadata.
3157 if (ParseInstructionMetadata(Inst, &PFS))
3162 // Set the name on the instruction.
3163 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3164 } while (!isa<TerminatorInst>(Inst));
3169 //===----------------------------------------------------------------------===//
3170 // Instruction Parsing.
3171 //===----------------------------------------------------------------------===//
3173 /// ParseInstruction - Parse one of the many different instructions.
3175 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3176 PerFunctionState &PFS) {
3177 lltok::Kind Token = Lex.getKind();
3178 if (Token == lltok::Eof)
3179 return TokError("found end of file when expecting more instructions");
3180 LocTy Loc = Lex.getLoc();
3181 unsigned KeywordVal = Lex.getUIntVal();
3182 Lex.Lex(); // Eat the keyword.
3185 default: return Error(Loc, "expected instruction opcode");
3186 // Terminator Instructions.
3187 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3188 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3189 case lltok::kw_br: return ParseBr(Inst, PFS);
3190 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3191 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3192 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3193 case lltok::kw_resume: return ParseResume(Inst, PFS);
3194 // Binary Operators.
3198 case lltok::kw_shl: {
3199 bool NUW = EatIfPresent(lltok::kw_nuw);
3200 bool NSW = EatIfPresent(lltok::kw_nsw);
3201 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3203 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3205 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3206 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3209 case lltok::kw_fadd:
3210 case lltok::kw_fsub:
3211 case lltok::kw_fmul:
3212 case lltok::kw_fdiv:
3213 case lltok::kw_frem: {
3214 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3215 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3219 Inst->setFastMathFlags(FMF);
3223 case lltok::kw_sdiv:
3224 case lltok::kw_udiv:
3225 case lltok::kw_lshr:
3226 case lltok::kw_ashr: {
3227 bool Exact = EatIfPresent(lltok::kw_exact);
3229 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3230 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3234 case lltok::kw_urem:
3235 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3238 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3239 case lltok::kw_icmp:
3240 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3242 case lltok::kw_trunc:
3243 case lltok::kw_zext:
3244 case lltok::kw_sext:
3245 case lltok::kw_fptrunc:
3246 case lltok::kw_fpext:
3247 case lltok::kw_bitcast:
3248 case lltok::kw_uitofp:
3249 case lltok::kw_sitofp:
3250 case lltok::kw_fptoui:
3251 case lltok::kw_fptosi:
3252 case lltok::kw_inttoptr:
3253 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3255 case lltok::kw_select: return ParseSelect(Inst, PFS);
3256 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3257 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3258 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3259 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3260 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3261 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3262 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3263 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3265 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3266 case lltok::kw_load: return ParseLoad(Inst, PFS);
3267 case lltok::kw_store: return ParseStore(Inst, PFS);
3268 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3269 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3270 case lltok::kw_fence: return ParseFence(Inst, PFS);
3271 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3272 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3273 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3277 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3278 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3279 if (Opc == Instruction::FCmp) {
3280 switch (Lex.getKind()) {
3281 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3282 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3283 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3284 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3285 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3286 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3287 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3288 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3289 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3290 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3291 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3292 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3293 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3294 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3295 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3296 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3297 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3300 switch (Lex.getKind()) {
3301 default: return TokError("expected icmp predicate (e.g. 'eq')");
3302 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3303 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3304 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3305 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3306 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3307 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3308 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3309 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3310 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3311 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3318 //===----------------------------------------------------------------------===//
3319 // Terminator Instructions.
3320 //===----------------------------------------------------------------------===//
3322 /// ParseRet - Parse a return instruction.
3323 /// ::= 'ret' void (',' !dbg, !1)*
3324 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3325 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3326 PerFunctionState &PFS) {
3327 SMLoc TypeLoc = Lex.getLoc();
3329 if (ParseType(Ty, true /*void allowed*/)) return true;
3331 Type *ResType = PFS.getFunction().getReturnType();
3333 if (Ty->isVoidTy()) {
3334 if (!ResType->isVoidTy())
3335 return Error(TypeLoc, "value doesn't match function result type '" +
3336 getTypeString(ResType) + "'");
3338 Inst = ReturnInst::Create(Context);
3343 if (ParseValue(Ty, RV, PFS)) return true;
3345 if (ResType != RV->getType())
3346 return Error(TypeLoc, "value doesn't match function result type '" +
3347 getTypeString(ResType) + "'");
3349 Inst = ReturnInst::Create(Context, RV);
3355 /// ::= 'br' TypeAndValue
3356 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3357 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3360 BasicBlock *Op1, *Op2;
3361 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3363 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3364 Inst = BranchInst::Create(BB);
3368 if (Op0->getType() != Type::getInt1Ty(Context))
3369 return Error(Loc, "branch condition must have 'i1' type");
3371 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3372 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3373 ParseToken(lltok::comma, "expected ',' after true destination") ||
3374 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3377 Inst = BranchInst::Create(Op1, Op2, Op0);
3383 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3385 /// ::= (TypeAndValue ',' TypeAndValue)*
3386 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3387 LocTy CondLoc, BBLoc;
3389 BasicBlock *DefaultBB;
3390 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3391 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3392 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3393 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3396 if (!Cond->getType()->isIntegerTy())
3397 return Error(CondLoc, "switch condition must have integer type");
3399 // Parse the jump table pairs.
3400 SmallPtrSet<Value*, 32> SeenCases;
3401 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3402 while (Lex.getKind() != lltok::rsquare) {
3406 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3407 ParseToken(lltok::comma, "expected ',' after case value") ||
3408 ParseTypeAndBasicBlock(DestBB, PFS))
3411 if (!SeenCases.insert(Constant))
3412 return Error(CondLoc, "duplicate case value in switch");
3413 if (!isa<ConstantInt>(Constant))
3414 return Error(CondLoc, "case value is not a constant integer");
3416 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3419 Lex.Lex(); // Eat the ']'.
3421 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3422 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3423 SI->addCase(Table[i].first, Table[i].second);
3430 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3431 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3434 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3435 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3436 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3439 if (!Address->getType()->isPointerTy())
3440 return Error(AddrLoc, "indirectbr address must have pointer type");
3442 // Parse the destination list.
3443 SmallVector<BasicBlock*, 16> DestList;
3445 if (Lex.getKind() != lltok::rsquare) {
3447 if (ParseTypeAndBasicBlock(DestBB, PFS))
3449 DestList.push_back(DestBB);
3451 while (EatIfPresent(lltok::comma)) {
3452 if (ParseTypeAndBasicBlock(DestBB, PFS))
3454 DestList.push_back(DestBB);
3458 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3461 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3462 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3463 IBI->addDestination(DestList[i]);
3470 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3471 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3472 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3473 LocTy CallLoc = Lex.getLoc();
3474 AttrBuilder RetAttrs, FnAttrs;
3475 std::vector<unsigned> FwdRefAttrGrps;
3480 SmallVector<ParamInfo, 16> ArgList;
3482 BasicBlock *NormalBB, *UnwindBB;
3483 if (ParseOptionalCallingConv(CC) ||
3484 ParseOptionalReturnAttrs(RetAttrs) ||
3485 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3486 ParseValID(CalleeID) ||
3487 ParseParameterList(ArgList, PFS) ||
3488 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false) ||
3489 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3490 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3491 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3492 ParseTypeAndBasicBlock(UnwindBB, PFS))
3495 // If RetType is a non-function pointer type, then this is the short syntax
3496 // for the call, which means that RetType is just the return type. Infer the
3497 // rest of the function argument types from the arguments that are present.
3498 PointerType *PFTy = 0;
3499 FunctionType *Ty = 0;
3500 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3501 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3502 // Pull out the types of all of the arguments...
3503 std::vector<Type*> ParamTypes;
3504 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3505 ParamTypes.push_back(ArgList[i].V->getType());
3507 if (!FunctionType::isValidReturnType(RetType))
3508 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3510 Ty = FunctionType::get(RetType, ParamTypes, false);
3511 PFTy = PointerType::getUnqual(Ty);
3514 // Look up the callee.
3516 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3518 // Set up the Attribute for the function.
3519 SmallVector<AttributeSet, 8> Attrs;
3520 if (RetAttrs.hasAttributes())
3521 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3522 AttributeSet::ReturnIndex,
3525 SmallVector<Value*, 8> Args;
3527 // Loop through FunctionType's arguments and ensure they are specified
3528 // correctly. Also, gather any parameter attributes.
3529 FunctionType::param_iterator I = Ty->param_begin();
3530 FunctionType::param_iterator E = Ty->param_end();
3531 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3532 Type *ExpectedTy = 0;
3535 } else if (!Ty->isVarArg()) {
3536 return Error(ArgList[i].Loc, "too many arguments specified");
3539 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3540 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3541 getTypeString(ExpectedTy) + "'");
3542 Args.push_back(ArgList[i].V);
3543 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3544 AttrBuilder B(ArgList[i].Attrs, i + 1);
3545 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3550 return Error(CallLoc, "not enough parameters specified for call");
3552 if (FnAttrs.hasAttributes())
3553 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3554 AttributeSet::FunctionIndex,
3557 // Finish off the Attribute and check them
3558 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3560 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3561 II->setCallingConv(CC);
3562 II->setAttributes(PAL);
3563 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3569 /// ::= 'resume' TypeAndValue
3570 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3571 Value *Exn; LocTy ExnLoc;
3572 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3575 ResumeInst *RI = ResumeInst::Create(Exn);
3580 //===----------------------------------------------------------------------===//
3581 // Binary Operators.
3582 //===----------------------------------------------------------------------===//
3585 /// ::= ArithmeticOps TypeAndValue ',' Value
3587 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3588 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3589 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3590 unsigned Opc, unsigned OperandType) {
3591 LocTy Loc; Value *LHS, *RHS;
3592 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3593 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3594 ParseValue(LHS->getType(), RHS, PFS))
3598 switch (OperandType) {
3599 default: llvm_unreachable("Unknown operand type!");
3600 case 0: // int or FP.
3601 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3602 LHS->getType()->isFPOrFPVectorTy();
3604 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3605 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3609 return Error(Loc, "invalid operand type for instruction");
3611 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3616 /// ::= ArithmeticOps TypeAndValue ',' Value {
3617 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3619 LocTy Loc; Value *LHS, *RHS;
3620 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3621 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3622 ParseValue(LHS->getType(), RHS, PFS))
3625 if (!LHS->getType()->isIntOrIntVectorTy())
3626 return Error(Loc,"instruction requires integer or integer vector operands");
3628 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3634 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3635 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3636 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3638 // Parse the integer/fp comparison predicate.
3642 if (ParseCmpPredicate(Pred, Opc) ||
3643 ParseTypeAndValue(LHS, Loc, PFS) ||
3644 ParseToken(lltok::comma, "expected ',' after compare value") ||
3645 ParseValue(LHS->getType(), RHS, PFS))
3648 if (Opc == Instruction::FCmp) {
3649 if (!LHS->getType()->isFPOrFPVectorTy())
3650 return Error(Loc, "fcmp requires floating point operands");
3651 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3653 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3654 if (!LHS->getType()->isIntOrIntVectorTy() &&
3655 !LHS->getType()->getScalarType()->isPointerTy())
3656 return Error(Loc, "icmp requires integer operands");
3657 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3662 //===----------------------------------------------------------------------===//
3663 // Other Instructions.
3664 //===----------------------------------------------------------------------===//
3668 /// ::= CastOpc TypeAndValue 'to' Type
3669 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3674 if (ParseTypeAndValue(Op, Loc, PFS) ||
3675 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3679 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3680 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3681 return Error(Loc, "invalid cast opcode for cast from '" +
3682 getTypeString(Op->getType()) + "' to '" +
3683 getTypeString(DestTy) + "'");
3685 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3690 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3691 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3693 Value *Op0, *Op1, *Op2;
3694 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3695 ParseToken(lltok::comma, "expected ',' after select condition") ||
3696 ParseTypeAndValue(Op1, PFS) ||
3697 ParseToken(lltok::comma, "expected ',' after select value") ||
3698 ParseTypeAndValue(Op2, PFS))
3701 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3702 return Error(Loc, Reason);
3704 Inst = SelectInst::Create(Op0, Op1, Op2);
3709 /// ::= 'va_arg' TypeAndValue ',' Type
3710 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3714 if (ParseTypeAndValue(Op, PFS) ||
3715 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3716 ParseType(EltTy, TypeLoc))
3719 if (!EltTy->isFirstClassType())
3720 return Error(TypeLoc, "va_arg requires operand with first class type");
3722 Inst = new VAArgInst(Op, EltTy);
3726 /// ParseExtractElement
3727 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3728 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3731 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3732 ParseToken(lltok::comma, "expected ',' after extract value") ||
3733 ParseTypeAndValue(Op1, PFS))
3736 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3737 return Error(Loc, "invalid extractelement operands");
3739 Inst = ExtractElementInst::Create(Op0, Op1);
3743 /// ParseInsertElement
3744 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3745 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3747 Value *Op0, *Op1, *Op2;
3748 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3749 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3750 ParseTypeAndValue(Op1, PFS) ||
3751 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3752 ParseTypeAndValue(Op2, PFS))
3755 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3756 return Error(Loc, "invalid insertelement operands");
3758 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3762 /// ParseShuffleVector
3763 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3764 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3766 Value *Op0, *Op1, *Op2;
3767 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3768 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3769 ParseTypeAndValue(Op1, PFS) ||
3770 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3771 ParseTypeAndValue(Op2, PFS))
3774 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3775 return Error(Loc, "invalid shufflevector operands");
3777 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3782 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3783 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3784 Type *Ty = 0; LocTy TypeLoc;
3787 if (ParseType(Ty, TypeLoc) ||
3788 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3789 ParseValue(Ty, Op0, PFS) ||
3790 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3791 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3792 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3795 bool AteExtraComma = false;
3796 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3798 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3800 if (!EatIfPresent(lltok::comma))
3803 if (Lex.getKind() == lltok::MetadataVar) {
3804 AteExtraComma = true;
3808 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3809 ParseValue(Ty, Op0, PFS) ||
3810 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3811 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3812 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3816 if (!Ty->isFirstClassType())
3817 return Error(TypeLoc, "phi node must have first class type");
3819 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3820 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3821 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3823 return AteExtraComma ? InstExtraComma : InstNormal;
3827 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3829 /// ::= 'catch' TypeAndValue
3831 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3832 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3833 Type *Ty = 0; LocTy TyLoc;
3834 Value *PersFn; LocTy PersFnLoc;
3836 if (ParseType(Ty, TyLoc) ||
3837 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3838 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3841 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3842 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3844 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3845 LandingPadInst::ClauseType CT;
3846 if (EatIfPresent(lltok::kw_catch))
3847 CT = LandingPadInst::Catch;
3848 else if (EatIfPresent(lltok::kw_filter))
3849 CT = LandingPadInst::Filter;
3851 return TokError("expected 'catch' or 'filter' clause type");
3853 Value *V; LocTy VLoc;
3854 if (ParseTypeAndValue(V, VLoc, PFS)) {
3859 // A 'catch' type expects a non-array constant. A filter clause expects an
3861 if (CT == LandingPadInst::Catch) {
3862 if (isa<ArrayType>(V->getType()))
3863 Error(VLoc, "'catch' clause has an invalid type");
3865 if (!isa<ArrayType>(V->getType()))
3866 Error(VLoc, "'filter' clause has an invalid type");
3877 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3878 /// ParameterList OptionalAttrs
3879 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3881 AttrBuilder RetAttrs, FnAttrs;
3882 std::vector<unsigned> FwdRefAttrGrps;
3887 SmallVector<ParamInfo, 16> ArgList;
3888 LocTy CallLoc = Lex.getLoc();
3890 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3891 ParseOptionalCallingConv(CC) ||
3892 ParseOptionalReturnAttrs(RetAttrs) ||
3893 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3894 ParseValID(CalleeID) ||
3895 ParseParameterList(ArgList, PFS) ||
3896 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false))
3899 // If RetType is a non-function pointer type, then this is the short syntax
3900 // for the call, which means that RetType is just the return type. Infer the
3901 // rest of the function argument types from the arguments that are present.
3902 PointerType *PFTy = 0;
3903 FunctionType *Ty = 0;
3904 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3905 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3906 // Pull out the types of all of the arguments...
3907 std::vector<Type*> ParamTypes;
3908 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3909 ParamTypes.push_back(ArgList[i].V->getType());
3911 if (!FunctionType::isValidReturnType(RetType))
3912 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3914 Ty = FunctionType::get(RetType, ParamTypes, false);
3915 PFTy = PointerType::getUnqual(Ty);
3918 // Look up the callee.
3920 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3922 // Set up the Attribute for the function.
3923 SmallVector<AttributeSet, 8> Attrs;
3924 if (RetAttrs.hasAttributes())
3925 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3926 AttributeSet::ReturnIndex,
3929 SmallVector<Value*, 8> Args;
3931 // Loop through FunctionType's arguments and ensure they are specified
3932 // correctly. Also, gather any parameter attributes.
3933 FunctionType::param_iterator I = Ty->param_begin();
3934 FunctionType::param_iterator E = Ty->param_end();
3935 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3936 Type *ExpectedTy = 0;
3939 } else if (!Ty->isVarArg()) {
3940 return Error(ArgList[i].Loc, "too many arguments specified");
3943 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3944 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3945 getTypeString(ExpectedTy) + "'");
3946 Args.push_back(ArgList[i].V);
3947 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3948 AttrBuilder B(ArgList[i].Attrs, i + 1);
3949 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3954 return Error(CallLoc, "not enough parameters specified for call");
3956 if (FnAttrs.hasAttributes())
3957 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3958 AttributeSet::FunctionIndex,
3961 // Finish off the Attribute and check them
3962 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3964 CallInst *CI = CallInst::Create(Callee, Args);
3965 CI->setTailCall(isTail);
3966 CI->setCallingConv(CC);
3967 CI->setAttributes(PAL);
3968 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
3973 //===----------------------------------------------------------------------===//
3974 // Memory Instructions.
3975 //===----------------------------------------------------------------------===//
3978 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3979 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3982 unsigned Alignment = 0;
3984 if (ParseType(Ty)) return true;
3986 bool AteExtraComma = false;
3987 if (EatIfPresent(lltok::comma)) {
3988 if (Lex.getKind() == lltok::kw_align) {
3989 if (ParseOptionalAlignment(Alignment)) return true;
3990 } else if (Lex.getKind() == lltok::MetadataVar) {
3991 AteExtraComma = true;
3993 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3994 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3999 if (Size && !Size->getType()->isIntegerTy())
4000 return Error(SizeLoc, "element count must have integer type");
4002 Inst = new AllocaInst(Ty, Size, Alignment);
4003 return AteExtraComma ? InstExtraComma : InstNormal;
4007 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4008 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4009 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4010 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4011 Value *Val; LocTy Loc;
4012 unsigned Alignment = 0;
4013 bool AteExtraComma = false;
4014 bool isAtomic = false;
4015 AtomicOrdering Ordering = NotAtomic;
4016 SynchronizationScope Scope = CrossThread;
4018 if (Lex.getKind() == lltok::kw_atomic) {
4023 bool isVolatile = false;
4024 if (Lex.getKind() == lltok::kw_volatile) {
4029 if (ParseTypeAndValue(Val, Loc, PFS) ||
4030 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4031 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4034 if (!Val->getType()->isPointerTy() ||
4035 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4036 return Error(Loc, "load operand must be a pointer to a first class type");
4037 if (isAtomic && !Alignment)
4038 return Error(Loc, "atomic load must have explicit non-zero alignment");
4039 if (Ordering == Release || Ordering == AcquireRelease)
4040 return Error(Loc, "atomic load cannot use Release ordering");
4042 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4043 return AteExtraComma ? InstExtraComma : InstNormal;
4048 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4049 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4050 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4051 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4052 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4053 unsigned Alignment = 0;
4054 bool AteExtraComma = false;
4055 bool isAtomic = false;
4056 AtomicOrdering Ordering = NotAtomic;
4057 SynchronizationScope Scope = CrossThread;
4059 if (Lex.getKind() == lltok::kw_atomic) {
4064 bool isVolatile = false;
4065 if (Lex.getKind() == lltok::kw_volatile) {
4070 if (ParseTypeAndValue(Val, Loc, PFS) ||
4071 ParseToken(lltok::comma, "expected ',' after store operand") ||
4072 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4073 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4074 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4077 if (!Ptr->getType()->isPointerTy())
4078 return Error(PtrLoc, "store operand must be a pointer");
4079 if (!Val->getType()->isFirstClassType())
4080 return Error(Loc, "store operand must be a first class value");
4081 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4082 return Error(Loc, "stored value and pointer type do not match");
4083 if (isAtomic && !Alignment)
4084 return Error(Loc, "atomic store must have explicit non-zero alignment");
4085 if (Ordering == Acquire || Ordering == AcquireRelease)
4086 return Error(Loc, "atomic store cannot use Acquire ordering");
4088 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4089 return AteExtraComma ? InstExtraComma : InstNormal;
4093 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4094 /// 'singlethread'? AtomicOrdering
4095 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4096 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4097 bool AteExtraComma = false;
4098 AtomicOrdering Ordering = NotAtomic;
4099 SynchronizationScope Scope = CrossThread;
4100 bool isVolatile = false;
4102 if (EatIfPresent(lltok::kw_volatile))
4105 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4106 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4107 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4108 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4109 ParseTypeAndValue(New, NewLoc, PFS) ||
4110 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4113 if (Ordering == Unordered)
4114 return TokError("cmpxchg cannot be unordered");
4115 if (!Ptr->getType()->isPointerTy())
4116 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4117 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4118 return Error(CmpLoc, "compare value and pointer type do not match");
4119 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4120 return Error(NewLoc, "new value and pointer type do not match");
4121 if (!New->getType()->isIntegerTy())
4122 return Error(NewLoc, "cmpxchg operand must be an integer");
4123 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4124 if (Size < 8 || (Size & (Size - 1)))
4125 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4128 AtomicCmpXchgInst *CXI =
4129 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4130 CXI->setVolatile(isVolatile);
4132 return AteExtraComma ? InstExtraComma : InstNormal;
4136 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4137 /// 'singlethread'? AtomicOrdering
4138 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4139 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4140 bool AteExtraComma = false;
4141 AtomicOrdering Ordering = NotAtomic;
4142 SynchronizationScope Scope = CrossThread;
4143 bool isVolatile = false;
4144 AtomicRMWInst::BinOp Operation;
4146 if (EatIfPresent(lltok::kw_volatile))
4149 switch (Lex.getKind()) {
4150 default: return TokError("expected binary operation in atomicrmw");
4151 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4152 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4153 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4154 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4155 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4156 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4157 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4158 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4159 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4160 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4161 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4163 Lex.Lex(); // Eat the operation.
4165 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4166 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4167 ParseTypeAndValue(Val, ValLoc, PFS) ||
4168 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4171 if (Ordering == Unordered)
4172 return TokError("atomicrmw cannot be unordered");
4173 if (!Ptr->getType()->isPointerTy())
4174 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4175 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4176 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4177 if (!Val->getType()->isIntegerTy())
4178 return Error(ValLoc, "atomicrmw operand must be an integer");
4179 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4180 if (Size < 8 || (Size & (Size - 1)))
4181 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4184 AtomicRMWInst *RMWI =
4185 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4186 RMWI->setVolatile(isVolatile);
4188 return AteExtraComma ? InstExtraComma : InstNormal;
4192 /// ::= 'fence' 'singlethread'? AtomicOrdering
4193 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4194 AtomicOrdering Ordering = NotAtomic;
4195 SynchronizationScope Scope = CrossThread;
4196 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4199 if (Ordering == Unordered)
4200 return TokError("fence cannot be unordered");
4201 if (Ordering == Monotonic)
4202 return TokError("fence cannot be monotonic");
4204 Inst = new FenceInst(Context, Ordering, Scope);
4208 /// ParseGetElementPtr
4209 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4210 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4215 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4217 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4219 if (!Ptr->getType()->getScalarType()->isPointerTy())
4220 return Error(Loc, "base of getelementptr must be a pointer");
4222 SmallVector<Value*, 16> Indices;
4223 bool AteExtraComma = false;
4224 while (EatIfPresent(lltok::comma)) {
4225 if (Lex.getKind() == lltok::MetadataVar) {
4226 AteExtraComma = true;
4229 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4230 if (!Val->getType()->getScalarType()->isIntegerTy())
4231 return Error(EltLoc, "getelementptr index must be an integer");
4232 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4233 return Error(EltLoc, "getelementptr index type missmatch");
4234 if (Val->getType()->isVectorTy()) {
4235 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4236 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4237 if (ValNumEl != PtrNumEl)
4238 return Error(EltLoc,
4239 "getelementptr vector index has a wrong number of elements");
4241 Indices.push_back(Val);
4244 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4245 return Error(Loc, "invalid getelementptr indices");
4246 Inst = GetElementPtrInst::Create(Ptr, Indices);
4248 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4249 return AteExtraComma ? InstExtraComma : InstNormal;
4252 /// ParseExtractValue
4253 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4254 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4255 Value *Val; LocTy Loc;
4256 SmallVector<unsigned, 4> Indices;
4258 if (ParseTypeAndValue(Val, Loc, PFS) ||
4259 ParseIndexList(Indices, AteExtraComma))
4262 if (!Val->getType()->isAggregateType())
4263 return Error(Loc, "extractvalue operand must be aggregate type");
4265 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4266 return Error(Loc, "invalid indices for extractvalue");
4267 Inst = ExtractValueInst::Create(Val, Indices);
4268 return AteExtraComma ? InstExtraComma : InstNormal;
4271 /// ParseInsertValue
4272 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4273 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4274 Value *Val0, *Val1; LocTy Loc0, Loc1;
4275 SmallVector<unsigned, 4> Indices;
4277 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4278 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4279 ParseTypeAndValue(Val1, Loc1, PFS) ||
4280 ParseIndexList(Indices, AteExtraComma))
4283 if (!Val0->getType()->isAggregateType())
4284 return Error(Loc0, "insertvalue operand must be aggregate type");
4286 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4287 return Error(Loc0, "invalid indices for insertvalue");
4288 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4289 return AteExtraComma ? InstExtraComma : InstNormal;
4292 //===----------------------------------------------------------------------===//
4293 // Embedded metadata.
4294 //===----------------------------------------------------------------------===//
4296 /// ParseMDNodeVector
4297 /// ::= Element (',' Element)*
4299 /// ::= 'null' | TypeAndValue
4300 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4301 PerFunctionState *PFS) {
4302 // Check for an empty list.
4303 if (Lex.getKind() == lltok::rbrace)
4307 // Null is a special case since it is typeless.
4308 if (EatIfPresent(lltok::kw_null)) {
4314 if (ParseTypeAndValue(V, PFS)) return true;
4316 } while (EatIfPresent(lltok::comma));