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/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Handle any instruction metadata forward references.
43 if (!ForwardRefInstMetadata.empty()) {
44 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
45 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
47 Instruction *Inst = I->first;
48 const std::vector<MDRef> &MDList = I->second;
50 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
51 unsigned SlotNo = MDList[i].MDSlot;
53 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
54 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 utostr(SlotNo) + "'");
56 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
59 ForwardRefInstMetadata.clear();
63 // Update auto-upgraded malloc calls to "malloc".
64 // FIXME: Remove in LLVM 3.0.
66 MallocF->setName("malloc");
67 // If setName() does not set the name to "malloc", then there is already a
68 // declaration of "malloc". In that case, iterate over all calls to MallocF
69 // and get them to call the declared "malloc" instead.
70 if (MallocF->getName() != "malloc") {
71 Constant *RealMallocF = M->getFunction("malloc");
72 if (RealMallocF->getType() != MallocF->getType())
73 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
74 MallocF->replaceAllUsesWith(RealMallocF);
75 MallocF->eraseFromParent();
81 // If there are entries in ForwardRefBlockAddresses at this point, they are
82 // references after the function was defined. Resolve those now.
83 while (!ForwardRefBlockAddresses.empty()) {
84 // Okay, we are referencing an already-parsed function, resolve them now.
86 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
87 if (Fn.Kind == ValID::t_GlobalName)
88 TheFn = M->getFunction(Fn.StrVal);
89 else if (Fn.UIntVal < NumberedVals.size())
90 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
93 return Error(Fn.Loc, "unknown function referenced by blockaddress");
95 // Resolve all these references.
96 if (ResolveForwardRefBlockAddresses(TheFn,
97 ForwardRefBlockAddresses.begin()->second,
101 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
105 if (!ForwardRefTypes.empty())
106 return Error(ForwardRefTypes.begin()->second.second,
107 "use of undefined type named '" +
108 ForwardRefTypes.begin()->first + "'");
109 if (!ForwardRefTypeIDs.empty())
110 return Error(ForwardRefTypeIDs.begin()->second.second,
111 "use of undefined type '%" +
112 utostr(ForwardRefTypeIDs.begin()->first) + "'");
114 if (!ForwardRefVals.empty())
115 return Error(ForwardRefVals.begin()->second.second,
116 "use of undefined value '@" + ForwardRefVals.begin()->first +
119 if (!ForwardRefValIDs.empty())
120 return Error(ForwardRefValIDs.begin()->second.second,
121 "use of undefined value '@" +
122 utostr(ForwardRefValIDs.begin()->first) + "'");
124 if (!ForwardRefMDNodes.empty())
125 return Error(ForwardRefMDNodes.begin()->second.second,
126 "use of undefined metadata '!" +
127 utostr(ForwardRefMDNodes.begin()->first) + "'");
130 // Look for intrinsic functions and CallInst that need to be upgraded
131 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
132 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
134 // Check debug info intrinsics.
135 CheckDebugInfoIntrinsics(M);
139 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
140 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
141 PerFunctionState *PFS) {
142 // Loop over all the references, resolving them.
143 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
146 if (Refs[i].first.Kind == ValID::t_LocalName)
147 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
149 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
150 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
151 return Error(Refs[i].first.Loc,
152 "cannot take address of numeric label after the function is defined");
154 Res = dyn_cast_or_null<BasicBlock>(
155 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
159 return Error(Refs[i].first.Loc,
160 "referenced value is not a basic block");
162 // Get the BlockAddress for this and update references to use it.
163 BlockAddress *BA = BlockAddress::get(TheFn, Res);
164 Refs[i].second->replaceAllUsesWith(BA);
165 Refs[i].second->eraseFromParent();
171 //===----------------------------------------------------------------------===//
172 // Top-Level Entities
173 //===----------------------------------------------------------------------===//
175 bool LLParser::ParseTopLevelEntities() {
177 switch (Lex.getKind()) {
178 default: return TokError("expected top-level entity");
179 case lltok::Eof: return false;
180 //case lltok::kw_define:
181 case lltok::kw_declare: if (ParseDeclare()) return true; break;
182 case lltok::kw_define: if (ParseDefine()) return true; break;
183 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
184 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
185 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
186 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
187 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
188 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
189 case lltok::LocalVar: if (ParseNamedType()) return true; break;
190 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
191 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
192 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
193 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
195 // The Global variable production with no name can have many different
196 // optional leading prefixes, the production is:
197 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
198 // OptionalAddrSpace ('constant'|'global') ...
199 case lltok::kw_private: // OptionalLinkage
200 case lltok::kw_linker_private: // OptionalLinkage
201 case lltok::kw_linker_private_weak: // OptionalLinkage
202 case lltok::kw_internal: // OptionalLinkage
203 case lltok::kw_weak: // OptionalLinkage
204 case lltok::kw_weak_odr: // OptionalLinkage
205 case lltok::kw_linkonce: // OptionalLinkage
206 case lltok::kw_linkonce_odr: // OptionalLinkage
207 case lltok::kw_appending: // OptionalLinkage
208 case lltok::kw_dllexport: // OptionalLinkage
209 case lltok::kw_common: // OptionalLinkage
210 case lltok::kw_dllimport: // OptionalLinkage
211 case lltok::kw_extern_weak: // OptionalLinkage
212 case lltok::kw_external: { // OptionalLinkage
213 unsigned Linkage, Visibility;
214 if (ParseOptionalLinkage(Linkage) ||
215 ParseOptionalVisibility(Visibility) ||
216 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
220 case lltok::kw_default: // OptionalVisibility
221 case lltok::kw_hidden: // OptionalVisibility
222 case lltok::kw_protected: { // OptionalVisibility
224 if (ParseOptionalVisibility(Visibility) ||
225 ParseGlobal("", SMLoc(), 0, false, Visibility))
230 case lltok::kw_thread_local: // OptionalThreadLocal
231 case lltok::kw_addrspace: // OptionalAddrSpace
232 case lltok::kw_constant: // GlobalType
233 case lltok::kw_global: // GlobalType
234 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
242 /// ::= 'module' 'asm' STRINGCONSTANT
243 bool LLParser::ParseModuleAsm() {
244 assert(Lex.getKind() == lltok::kw_module);
248 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
249 ParseStringConstant(AsmStr)) return true;
251 const std::string &AsmSoFar = M->getModuleInlineAsm();
252 if (AsmSoFar.empty())
253 M->setModuleInlineAsm(AsmStr);
255 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
260 /// ::= 'target' 'triple' '=' STRINGCONSTANT
261 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
262 bool LLParser::ParseTargetDefinition() {
263 assert(Lex.getKind() == lltok::kw_target);
266 default: return TokError("unknown target property");
267 case lltok::kw_triple:
269 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
270 ParseStringConstant(Str))
272 M->setTargetTriple(Str);
274 case lltok::kw_datalayout:
276 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
277 ParseStringConstant(Str))
279 M->setDataLayout(Str);
285 /// ::= 'deplibs' '=' '[' ']'
286 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
287 bool LLParser::ParseDepLibs() {
288 assert(Lex.getKind() == lltok::kw_deplibs);
290 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
291 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
294 if (EatIfPresent(lltok::rsquare))
298 if (ParseStringConstant(Str)) return true;
301 while (EatIfPresent(lltok::comma)) {
302 if (ParseStringConstant(Str)) return true;
306 return ParseToken(lltok::rsquare, "expected ']' at end of list");
309 /// ParseUnnamedType:
311 /// ::= LocalVarID '=' 'type' type
312 bool LLParser::ParseUnnamedType() {
313 unsigned TypeID = NumberedTypes.size();
315 // Handle the LocalVarID form.
316 if (Lex.getKind() == lltok::LocalVarID) {
317 if (Lex.getUIntVal() != TypeID)
318 return Error(Lex.getLoc(), "type expected to be numbered '%" +
319 utostr(TypeID) + "'");
320 Lex.Lex(); // eat LocalVarID;
322 if (ParseToken(lltok::equal, "expected '=' after name"))
326 LocTy TypeLoc = Lex.getLoc();
327 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
329 PATypeHolder Ty(Type::getVoidTy(Context));
330 if (ParseType(Ty)) return true;
332 // See if this type was previously referenced.
333 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
334 FI = ForwardRefTypeIDs.find(TypeID);
335 if (FI != ForwardRefTypeIDs.end()) {
336 if (FI->second.first.get() == Ty)
337 return Error(TypeLoc, "self referential type is invalid");
339 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
340 Ty = FI->second.first.get();
341 ForwardRefTypeIDs.erase(FI);
344 NumberedTypes.push_back(Ty);
350 /// ::= LocalVar '=' 'type' type
351 bool LLParser::ParseNamedType() {
352 std::string Name = Lex.getStrVal();
353 LocTy NameLoc = Lex.getLoc();
354 Lex.Lex(); // eat LocalVar.
356 PATypeHolder Ty(Type::getVoidTy(Context));
358 if (ParseToken(lltok::equal, "expected '=' after name") ||
359 ParseToken(lltok::kw_type, "expected 'type' after name") ||
363 // Set the type name, checking for conflicts as we do so.
364 bool AlreadyExists = M->addTypeName(Name, Ty);
365 if (!AlreadyExists) return false;
367 // See if this type is a forward reference. We need to eagerly resolve
368 // types to allow recursive type redefinitions below.
369 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
370 FI = ForwardRefTypes.find(Name);
371 if (FI != ForwardRefTypes.end()) {
372 if (FI->second.first.get() == Ty)
373 return Error(NameLoc, "self referential type is invalid");
375 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
376 Ty = FI->second.first.get();
377 ForwardRefTypes.erase(FI);
380 // Inserting a name that is already defined, get the existing name.
381 const Type *Existing = M->getTypeByName(Name);
382 assert(Existing && "Conflict but no matching type?!");
384 // Otherwise, this is an attempt to redefine a type. That's okay if
385 // the redefinition is identical to the original.
386 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
387 if (Existing == Ty) return false;
389 // Any other kind of (non-equivalent) redefinition is an error.
390 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
391 Ty->getDescription() + "'");
396 /// ::= 'declare' FunctionHeader
397 bool LLParser::ParseDeclare() {
398 assert(Lex.getKind() == lltok::kw_declare);
402 return ParseFunctionHeader(F, false);
406 /// ::= 'define' FunctionHeader '{' ...
407 bool LLParser::ParseDefine() {
408 assert(Lex.getKind() == lltok::kw_define);
412 return ParseFunctionHeader(F, true) ||
413 ParseFunctionBody(*F);
419 bool LLParser::ParseGlobalType(bool &IsConstant) {
420 if (Lex.getKind() == lltok::kw_constant)
422 else if (Lex.getKind() == lltok::kw_global)
426 return TokError("expected 'global' or 'constant'");
432 /// ParseUnnamedGlobal:
433 /// OptionalVisibility ALIAS ...
434 /// OptionalLinkage OptionalVisibility ... -> global variable
435 /// GlobalID '=' OptionalVisibility ALIAS ...
436 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
446 utostr(VarID) + "'");
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility;
455 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
464 /// ParseNamedGlobal:
465 /// GlobalVar '=' OptionalVisibility ALIAS ...
466 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
467 bool LLParser::ParseNamedGlobal() {
468 assert(Lex.getKind() == lltok::GlobalVar);
469 LocTy NameLoc = Lex.getLoc();
470 std::string Name = Lex.getStrVal();
474 unsigned Linkage, Visibility;
475 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
476 ParseOptionalLinkage(Linkage, HasLinkage) ||
477 ParseOptionalVisibility(Visibility))
480 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
481 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
482 return ParseAlias(Name, NameLoc, Visibility);
486 // ::= '!' STRINGCONSTANT
487 bool LLParser::ParseMDString(MDString *&Result) {
489 if (ParseStringConstant(Str)) return true;
490 Result = MDString::get(Context, Str);
495 // ::= '!' MDNodeNumber
497 /// This version of ParseMDNodeID returns the slot number and null in the case
498 /// of a forward reference.
499 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
500 // !{ ..., !42, ... }
501 if (ParseUInt32(SlotNo)) return true;
503 // Check existing MDNode.
504 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
505 Result = NumberedMetadata[SlotNo];
511 bool LLParser::ParseMDNodeID(MDNode *&Result) {
512 // !{ ..., !42, ... }
514 if (ParseMDNodeID(Result, MID)) return true;
516 // If not a forward reference, just return it now.
517 if (Result) return false;
519 // Otherwise, create MDNode forward reference.
521 // FIXME: This is not unique enough!
522 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
523 Value *V = MDString::get(Context, FwdRefName);
524 MDNode *FwdNode = MDNode::get(Context, &V, 1);
525 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
527 if (NumberedMetadata.size() <= MID)
528 NumberedMetadata.resize(MID+1);
529 NumberedMetadata[MID] = FwdNode;
534 /// ParseNamedMetadata:
535 /// !foo = !{ !1, !2 }
536 bool LLParser::ParseNamedMetadata() {
537 assert(Lex.getKind() == lltok::MetadataVar);
538 std::string Name = Lex.getStrVal();
541 if (ParseToken(lltok::equal, "expected '=' here") ||
542 ParseToken(lltok::exclaim, "Expected '!' here") ||
543 ParseToken(lltok::lbrace, "Expected '{' here"))
546 SmallVector<MDNode *, 8> Elts;
547 if (Lex.getKind() != lltok::rbrace)
549 // Null is a special case since it is typeless.
550 if (EatIfPresent(lltok::kw_null)) {
555 if (ParseToken(lltok::exclaim, "Expected '!' here"))
559 if (ParseMDNodeID(N)) return true;
561 } while (EatIfPresent(lltok::comma));
563 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
566 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
578 PATypeHolder Ty(Type::getVoidTy(Context));
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.data(), Elts.size());
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 FI->second.first->replaceAllUsesWith(Init);
596 ForwardRefMDNodes.erase(FI);
598 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
600 if (MetadataID >= NumberedMetadata.size())
601 NumberedMetadata.resize(MetadataID+1);
603 if (NumberedMetadata[MetadataID] != 0)
604 return TokError("Metadata id is already used");
605 NumberedMetadata[MetadataID] = Init;
612 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
615 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
616 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
618 /// Everything through visibility has already been parsed.
620 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
621 unsigned Visibility) {
622 assert(Lex.getKind() == lltok::kw_alias);
625 LocTy LinkageLoc = Lex.getLoc();
626 if (ParseOptionalLinkage(Linkage))
629 if (Linkage != GlobalValue::ExternalLinkage &&
630 Linkage != GlobalValue::WeakAnyLinkage &&
631 Linkage != GlobalValue::WeakODRLinkage &&
632 Linkage != GlobalValue::InternalLinkage &&
633 Linkage != GlobalValue::PrivateLinkage &&
634 Linkage != GlobalValue::LinkerPrivateLinkage &&
635 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
636 return Error(LinkageLoc, "invalid linkage type for alias");
639 LocTy AliaseeLoc = Lex.getLoc();
640 if (Lex.getKind() != lltok::kw_bitcast &&
641 Lex.getKind() != lltok::kw_getelementptr) {
642 if (ParseGlobalTypeAndValue(Aliasee)) return true;
644 // The bitcast dest type is not present, it is implied by the dest type.
646 if (ParseValID(ID)) return true;
647 if (ID.Kind != ValID::t_Constant)
648 return Error(AliaseeLoc, "invalid aliasee");
649 Aliasee = ID.ConstantVal;
652 if (!Aliasee->getType()->isPointerTy())
653 return Error(AliaseeLoc, "alias must have pointer type");
655 // Okay, create the alias but do not insert it into the module yet.
656 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
657 (GlobalValue::LinkageTypes)Linkage, Name,
659 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
661 // See if this value already exists in the symbol table. If so, it is either
662 // a redefinition or a definition of a forward reference.
663 if (GlobalValue *Val = M->getNamedValue(Name)) {
664 // See if this was a redefinition. If so, there is no entry in
666 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
667 I = ForwardRefVals.find(Name);
668 if (I == ForwardRefVals.end())
669 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
671 // Otherwise, this was a definition of forward ref. Verify that types
673 if (Val->getType() != GA->getType())
674 return Error(NameLoc,
675 "forward reference and definition of alias have different types");
677 // If they agree, just RAUW the old value with the alias and remove the
679 Val->replaceAllUsesWith(GA);
680 Val->eraseFromParent();
681 ForwardRefVals.erase(I);
684 // Insert into the module, we know its name won't collide now.
685 M->getAliasList().push_back(GA);
686 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
692 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
693 /// OptionalAddrSpace GlobalType Type Const
694 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
695 /// OptionalAddrSpace GlobalType Type Const
697 /// Everything through visibility has been parsed already.
699 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
700 unsigned Linkage, bool HasLinkage,
701 unsigned Visibility) {
703 bool ThreadLocal, IsConstant;
706 PATypeHolder Ty(Type::getVoidTy(Context));
707 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
708 ParseOptionalAddrSpace(AddrSpace) ||
709 ParseGlobalType(IsConstant) ||
710 ParseType(Ty, TyLoc))
713 // If the linkage is specified and is external, then no initializer is
716 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
717 Linkage != GlobalValue::ExternalWeakLinkage &&
718 Linkage != GlobalValue::ExternalLinkage)) {
719 if (ParseGlobalValue(Ty, Init))
723 if (Ty->isFunctionTy() || Ty->isLabelTy())
724 return Error(TyLoc, "invalid type for global variable");
726 GlobalVariable *GV = 0;
728 // See if the global was forward referenced, if so, use the global.
730 if (GlobalValue *GVal = M->getNamedValue(Name)) {
731 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
732 return Error(NameLoc, "redefinition of global '@" + Name + "'");
733 GV = cast<GlobalVariable>(GVal);
736 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
737 I = ForwardRefValIDs.find(NumberedVals.size());
738 if (I != ForwardRefValIDs.end()) {
739 GV = cast<GlobalVariable>(I->second.first);
740 ForwardRefValIDs.erase(I);
745 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
746 Name, 0, false, AddrSpace);
748 if (GV->getType()->getElementType() != Ty)
750 "forward reference and definition of global have different types");
752 // Move the forward-reference to the correct spot in the module.
753 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
757 NumberedVals.push_back(GV);
759 // Set the parsed properties on the global.
761 GV->setInitializer(Init);
762 GV->setConstant(IsConstant);
763 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
764 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
765 GV->setThreadLocal(ThreadLocal);
767 // Parse attributes on the global.
768 while (Lex.getKind() == lltok::comma) {
771 if (Lex.getKind() == lltok::kw_section) {
773 GV->setSection(Lex.getStrVal());
774 if (ParseToken(lltok::StringConstant, "expected global section string"))
776 } else if (Lex.getKind() == lltok::kw_align) {
778 if (ParseOptionalAlignment(Alignment)) return true;
779 GV->setAlignment(Alignment);
781 TokError("unknown global variable property!");
789 //===----------------------------------------------------------------------===//
790 // GlobalValue Reference/Resolution Routines.
791 //===----------------------------------------------------------------------===//
793 /// GetGlobalVal - Get a value with the specified name or ID, creating a
794 /// forward reference record if needed. This can return null if the value
795 /// exists but does not have the right type.
796 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
798 const PointerType *PTy = dyn_cast<PointerType>(Ty);
800 Error(Loc, "global variable reference must have pointer type");
804 // Look this name up in the normal function symbol table.
806 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
808 // If this is a forward reference for the value, see if we already created a
809 // forward ref record.
811 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
812 I = ForwardRefVals.find(Name);
813 if (I != ForwardRefVals.end())
814 Val = I->second.first;
817 // If we have the value in the symbol table or fwd-ref table, return it.
819 if (Val->getType() == Ty) return Val;
820 Error(Loc, "'@" + Name + "' defined with type '" +
821 Val->getType()->getDescription() + "'");
825 // Otherwise, create a new forward reference for this value and remember it.
827 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
828 // Function types can return opaque but functions can't.
829 if (FT->getReturnType()->isOpaqueTy()) {
830 Error(Loc, "function may not return opaque type");
834 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
836 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
837 GlobalValue::ExternalWeakLinkage, 0, Name);
840 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
844 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
845 const PointerType *PTy = dyn_cast<PointerType>(Ty);
847 Error(Loc, "global variable reference must have pointer type");
851 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
853 // If this is a forward reference for the value, see if we already created a
854 // forward ref record.
856 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
857 I = ForwardRefValIDs.find(ID);
858 if (I != ForwardRefValIDs.end())
859 Val = I->second.first;
862 // If we have the value in the symbol table or fwd-ref table, return it.
864 if (Val->getType() == Ty) return Val;
865 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
866 Val->getType()->getDescription() + "'");
870 // Otherwise, create a new forward reference for this value and remember it.
872 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
873 // Function types can return opaque but functions can't.
874 if (FT->getReturnType()->isOpaqueTy()) {
875 Error(Loc, "function may not return opaque type");
878 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
880 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
881 GlobalValue::ExternalWeakLinkage, 0, "");
884 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
889 //===----------------------------------------------------------------------===//
891 //===----------------------------------------------------------------------===//
893 /// ParseToken - If the current token has the specified kind, eat it and return
894 /// success. Otherwise, emit the specified error and return failure.
895 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
896 if (Lex.getKind() != T)
897 return TokError(ErrMsg);
902 /// ParseStringConstant
903 /// ::= StringConstant
904 bool LLParser::ParseStringConstant(std::string &Result) {
905 if (Lex.getKind() != lltok::StringConstant)
906 return TokError("expected string constant");
907 Result = Lex.getStrVal();
914 bool LLParser::ParseUInt32(unsigned &Val) {
915 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
916 return TokError("expected integer");
917 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
918 if (Val64 != unsigned(Val64))
919 return TokError("expected 32-bit integer (too large)");
926 /// ParseOptionalAddrSpace
928 /// := 'addrspace' '(' uint32 ')'
929 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
931 if (!EatIfPresent(lltok::kw_addrspace))
933 return ParseToken(lltok::lparen, "expected '(' in address space") ||
934 ParseUInt32(AddrSpace) ||
935 ParseToken(lltok::rparen, "expected ')' in address space");
938 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
939 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
940 /// 2: function attr.
941 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
942 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
943 Attrs = Attribute::None;
944 LocTy AttrLoc = Lex.getLoc();
947 switch (Lex.getKind()) {
950 // Treat these as signext/zeroext if they occur in the argument list after
951 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
952 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
954 // FIXME: REMOVE THIS IN LLVM 3.0
956 if (Lex.getKind() == lltok::kw_sext)
957 Attrs |= Attribute::SExt;
959 Attrs |= Attribute::ZExt;
963 default: // End of attributes.
964 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
965 return Error(AttrLoc, "invalid use of function-only attribute");
967 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
968 return Error(AttrLoc, "invalid use of parameter-only attribute");
971 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
972 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
973 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
974 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
975 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
976 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
977 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
978 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
980 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
981 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
982 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
983 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
984 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
985 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
986 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
987 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
988 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
989 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
990 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
991 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
992 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
994 case lltok::kw_alignstack: {
996 if (ParseOptionalStackAlignment(Alignment))
998 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
1002 case lltok::kw_align: {
1004 if (ParseOptionalAlignment(Alignment))
1006 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1015 /// ParseOptionalLinkage
1018 /// ::= 'linker_private'
1019 /// ::= 'linker_private_weak'
1024 /// ::= 'linkonce_odr'
1025 /// ::= 'available_externally'
1030 /// ::= 'extern_weak'
1032 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1034 switch (Lex.getKind()) {
1035 default: Res=GlobalValue::ExternalLinkage; return false;
1036 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1037 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1038 case lltok::kw_linker_private_weak:
1039 Res = GlobalValue::LinkerPrivateWeakLinkage;
1041 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1042 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1043 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1044 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1045 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1046 case lltok::kw_available_externally:
1047 Res = GlobalValue::AvailableExternallyLinkage;
1049 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1050 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1051 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1052 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1053 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1054 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1061 /// ParseOptionalVisibility
1067 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1068 switch (Lex.getKind()) {
1069 default: Res = GlobalValue::DefaultVisibility; return false;
1070 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1071 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1072 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1078 /// ParseOptionalCallingConv
1083 /// ::= 'x86_stdcallcc'
1084 /// ::= 'x86_fastcallcc'
1085 /// ::= 'x86_thiscallcc'
1086 /// ::= 'arm_apcscc'
1087 /// ::= 'arm_aapcscc'
1088 /// ::= 'arm_aapcs_vfpcc'
1089 /// ::= 'msp430_intrcc'
1092 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1093 switch (Lex.getKind()) {
1094 default: CC = CallingConv::C; return false;
1095 case lltok::kw_ccc: CC = CallingConv::C; break;
1096 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1097 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1098 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1099 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1100 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1101 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1102 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1103 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1104 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1105 case lltok::kw_cc: {
1106 unsigned ArbitraryCC;
1108 if (ParseUInt32(ArbitraryCC)) {
1111 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1121 /// ParseInstructionMetadata
1122 /// ::= !dbg !42 (',' !dbg !57)*
1123 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1125 if (Lex.getKind() != lltok::MetadataVar)
1126 return TokError("expected metadata after comma");
1128 std::string Name = Lex.getStrVal();
1133 SMLoc Loc = Lex.getLoc();
1134 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1135 ParseMDNodeID(Node, NodeID))
1138 unsigned MDK = M->getMDKindID(Name.c_str());
1140 // If we got the node, add it to the instruction.
1141 Inst->setMetadata(MDK, Node);
1143 MDRef R = { Loc, MDK, NodeID };
1144 // Otherwise, remember that this should be resolved later.
1145 ForwardRefInstMetadata[Inst].push_back(R);
1148 // If this is the end of the list, we're done.
1149 } while (EatIfPresent(lltok::comma));
1153 /// ParseOptionalAlignment
1156 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1158 if (!EatIfPresent(lltok::kw_align))
1160 LocTy AlignLoc = Lex.getLoc();
1161 if (ParseUInt32(Alignment)) return true;
1162 if (!isPowerOf2_32(Alignment))
1163 return Error(AlignLoc, "alignment is not a power of two");
1167 /// ParseOptionalCommaAlign
1171 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1173 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1174 bool &AteExtraComma) {
1175 AteExtraComma = false;
1176 while (EatIfPresent(lltok::comma)) {
1177 // Metadata at the end is an early exit.
1178 if (Lex.getKind() == lltok::MetadataVar) {
1179 AteExtraComma = true;
1183 if (Lex.getKind() != lltok::kw_align)
1184 return Error(Lex.getLoc(), "expected metadata or 'align'");
1186 if (ParseOptionalAlignment(Alignment)) return true;
1192 /// ParseOptionalStackAlignment
1194 /// ::= 'alignstack' '(' 4 ')'
1195 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1197 if (!EatIfPresent(lltok::kw_alignstack))
1199 LocTy ParenLoc = Lex.getLoc();
1200 if (!EatIfPresent(lltok::lparen))
1201 return Error(ParenLoc, "expected '('");
1202 LocTy AlignLoc = Lex.getLoc();
1203 if (ParseUInt32(Alignment)) return true;
1204 ParenLoc = Lex.getLoc();
1205 if (!EatIfPresent(lltok::rparen))
1206 return Error(ParenLoc, "expected ')'");
1207 if (!isPowerOf2_32(Alignment))
1208 return Error(AlignLoc, "stack alignment is not a power of two");
1212 /// ParseIndexList - This parses the index list for an insert/extractvalue
1213 /// instruction. This sets AteExtraComma in the case where we eat an extra
1214 /// comma at the end of the line and find that it is followed by metadata.
1215 /// Clients that don't allow metadata can call the version of this function that
1216 /// only takes one argument.
1219 /// ::= (',' uint32)+
1221 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1222 bool &AteExtraComma) {
1223 AteExtraComma = false;
1225 if (Lex.getKind() != lltok::comma)
1226 return TokError("expected ',' as start of index list");
1228 while (EatIfPresent(lltok::comma)) {
1229 if (Lex.getKind() == lltok::MetadataVar) {
1230 AteExtraComma = true;
1234 if (ParseUInt32(Idx)) return true;
1235 Indices.push_back(Idx);
1241 //===----------------------------------------------------------------------===//
1243 //===----------------------------------------------------------------------===//
1245 /// ParseType - Parse and resolve a full type.
1246 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1247 LocTy TypeLoc = Lex.getLoc();
1248 if (ParseTypeRec(Result)) return true;
1250 // Verify no unresolved uprefs.
1251 if (!UpRefs.empty())
1252 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1254 if (!AllowVoid && Result.get()->isVoidTy())
1255 return Error(TypeLoc, "void type only allowed for function results");
1260 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1261 /// called. It loops through the UpRefs vector, which is a list of the
1262 /// currently active types. For each type, if the up-reference is contained in
1263 /// the newly completed type, we decrement the level count. When the level
1264 /// count reaches zero, the up-referenced type is the type that is passed in:
1265 /// thus we can complete the cycle.
1267 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1268 // If Ty isn't abstract, or if there are no up-references in it, then there is
1269 // nothing to resolve here.
1270 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1272 PATypeHolder Ty(ty);
1274 dbgs() << "Type '" << Ty->getDescription()
1275 << "' newly formed. Resolving upreferences.\n"
1276 << UpRefs.size() << " upreferences active!\n";
1279 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1280 // to zero), we resolve them all together before we resolve them to Ty. At
1281 // the end of the loop, if there is anything to resolve to Ty, it will be in
1283 OpaqueType *TypeToResolve = 0;
1285 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1286 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1288 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1289 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1292 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1293 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1294 << (ContainsType ? "true" : "false")
1295 << " level=" << UpRefs[i].NestingLevel << "\n";
1300 // Decrement level of upreference
1301 unsigned Level = --UpRefs[i].NestingLevel;
1302 UpRefs[i].LastContainedTy = Ty;
1304 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1309 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1312 TypeToResolve = UpRefs[i].UpRefTy;
1314 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1315 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1316 --i; // Do not skip the next element.
1320 TypeToResolve->refineAbstractTypeTo(Ty);
1326 /// ParseTypeRec - The recursive function used to process the internal
1327 /// implementation details of types.
1328 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1329 switch (Lex.getKind()) {
1331 return TokError("expected type");
1333 // TypeRec ::= 'float' | 'void' (etc)
1334 Result = Lex.getTyVal();
1337 case lltok::kw_opaque:
1338 // TypeRec ::= 'opaque'
1339 Result = OpaqueType::get(Context);
1343 // TypeRec ::= '{' ... '}'
1344 if (ParseStructType(Result, false))
1347 case lltok::kw_union:
1348 // TypeRec ::= 'union' '{' ... '}'
1349 if (ParseUnionType(Result))
1352 case lltok::lsquare:
1353 // TypeRec ::= '[' ... ']'
1354 Lex.Lex(); // eat the lsquare.
1355 if (ParseArrayVectorType(Result, false))
1358 case lltok::less: // Either vector or packed struct.
1359 // TypeRec ::= '<' ... '>'
1361 if (Lex.getKind() == lltok::lbrace) {
1362 if (ParseStructType(Result, true) ||
1363 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1365 } else if (ParseArrayVectorType(Result, true))
1368 case lltok::LocalVar:
1369 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1371 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1374 Result = OpaqueType::get(Context);
1375 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1376 std::make_pair(Result,
1378 M->addTypeName(Lex.getStrVal(), Result.get());
1383 case lltok::LocalVarID:
1385 if (Lex.getUIntVal() < NumberedTypes.size())
1386 Result = NumberedTypes[Lex.getUIntVal()];
1388 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1389 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1390 if (I != ForwardRefTypeIDs.end())
1391 Result = I->second.first;
1393 Result = OpaqueType::get(Context);
1394 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1395 std::make_pair(Result,
1401 case lltok::backslash: {
1402 // TypeRec ::= '\' 4
1405 if (ParseUInt32(Val)) return true;
1406 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1407 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1413 // Parse the type suffixes.
1415 switch (Lex.getKind()) {
1417 default: return false;
1419 // TypeRec ::= TypeRec '*'
1421 if (Result.get()->isLabelTy())
1422 return TokError("basic block pointers are invalid");
1423 if (Result.get()->isVoidTy())
1424 return TokError("pointers to void are invalid; use i8* instead");
1425 if (!PointerType::isValidElementType(Result.get()))
1426 return TokError("pointer to this type is invalid");
1427 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1431 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1432 case lltok::kw_addrspace: {
1433 if (Result.get()->isLabelTy())
1434 return TokError("basic block pointers are invalid");
1435 if (Result.get()->isVoidTy())
1436 return TokError("pointers to void are invalid; use i8* instead");
1437 if (!PointerType::isValidElementType(Result.get()))
1438 return TokError("pointer to this type is invalid");
1440 if (ParseOptionalAddrSpace(AddrSpace) ||
1441 ParseToken(lltok::star, "expected '*' in address space"))
1444 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1448 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1450 if (ParseFunctionType(Result))
1457 /// ParseParameterList
1459 /// ::= '(' Arg (',' Arg)* ')'
1461 /// ::= Type OptionalAttributes Value OptionalAttributes
1462 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1463 PerFunctionState &PFS) {
1464 if (ParseToken(lltok::lparen, "expected '(' in call"))
1467 while (Lex.getKind() != lltok::rparen) {
1468 // If this isn't the first argument, we need a comma.
1469 if (!ArgList.empty() &&
1470 ParseToken(lltok::comma, "expected ',' in argument list"))
1473 // Parse the argument.
1475 PATypeHolder ArgTy(Type::getVoidTy(Context));
1476 unsigned ArgAttrs1 = Attribute::None;
1477 unsigned ArgAttrs2 = Attribute::None;
1479 if (ParseType(ArgTy, ArgLoc))
1482 // Otherwise, handle normal operands.
1483 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1484 ParseValue(ArgTy, V, PFS) ||
1485 // FIXME: Should not allow attributes after the argument, remove this
1487 ParseOptionalAttrs(ArgAttrs2, 3))
1489 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1492 Lex.Lex(); // Lex the ')'.
1498 /// ParseArgumentList - Parse the argument list for a function type or function
1499 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1500 /// ::= '(' ArgTypeListI ')'
1504 /// ::= ArgTypeList ',' '...'
1505 /// ::= ArgType (',' ArgType)*
1507 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1508 bool &isVarArg, bool inType) {
1510 assert(Lex.getKind() == lltok::lparen);
1511 Lex.Lex(); // eat the (.
1513 if (Lex.getKind() == lltok::rparen) {
1515 } else if (Lex.getKind() == lltok::dotdotdot) {
1519 LocTy TypeLoc = Lex.getLoc();
1520 PATypeHolder ArgTy(Type::getVoidTy(Context));
1524 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1525 // types (such as a function returning a pointer to itself). If parsing a
1526 // function prototype, we require fully resolved types.
1527 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1528 ParseOptionalAttrs(Attrs, 0)) return true;
1530 if (ArgTy->isVoidTy())
1531 return Error(TypeLoc, "argument can not have void type");
1533 if (Lex.getKind() == lltok::LocalVar ||
1534 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1535 Name = Lex.getStrVal();
1539 if (!FunctionType::isValidArgumentType(ArgTy))
1540 return Error(TypeLoc, "invalid type for function argument");
1542 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1544 while (EatIfPresent(lltok::comma)) {
1545 // Handle ... at end of arg list.
1546 if (EatIfPresent(lltok::dotdotdot)) {
1551 // Otherwise must be an argument type.
1552 TypeLoc = Lex.getLoc();
1553 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1554 ParseOptionalAttrs(Attrs, 0)) return true;
1556 if (ArgTy->isVoidTy())
1557 return Error(TypeLoc, "argument can not have void type");
1559 if (Lex.getKind() == lltok::LocalVar ||
1560 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1561 Name = Lex.getStrVal();
1567 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1568 return Error(TypeLoc, "invalid type for function argument");
1570 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1574 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1577 /// ParseFunctionType
1578 /// ::= Type ArgumentList OptionalAttrs
1579 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1580 assert(Lex.getKind() == lltok::lparen);
1582 if (!FunctionType::isValidReturnType(Result))
1583 return TokError("invalid function return type");
1585 std::vector<ArgInfo> ArgList;
1588 if (ParseArgumentList(ArgList, isVarArg, true) ||
1589 // FIXME: Allow, but ignore attributes on function types!
1590 // FIXME: Remove in LLVM 3.0
1591 ParseOptionalAttrs(Attrs, 2))
1594 // Reject names on the arguments lists.
1595 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1596 if (!ArgList[i].Name.empty())
1597 return Error(ArgList[i].Loc, "argument name invalid in function type");
1598 if (!ArgList[i].Attrs != 0) {
1599 // Allow but ignore attributes on function types; this permits
1601 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1605 std::vector<const Type*> ArgListTy;
1606 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1607 ArgListTy.push_back(ArgList[i].Type);
1609 Result = HandleUpRefs(FunctionType::get(Result.get(),
1610 ArgListTy, isVarArg));
1614 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1617 /// ::= '{' TypeRec (',' TypeRec)* '}'
1618 /// ::= '<' '{' '}' '>'
1619 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1620 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1621 assert(Lex.getKind() == lltok::lbrace);
1622 Lex.Lex(); // Consume the '{'
1624 if (EatIfPresent(lltok::rbrace)) {
1625 Result = StructType::get(Context, Packed);
1629 std::vector<PATypeHolder> ParamsList;
1630 LocTy EltTyLoc = Lex.getLoc();
1631 if (ParseTypeRec(Result)) return true;
1632 ParamsList.push_back(Result);
1634 if (Result->isVoidTy())
1635 return Error(EltTyLoc, "struct element can not have void type");
1636 if (!StructType::isValidElementType(Result))
1637 return Error(EltTyLoc, "invalid element type for struct");
1639 while (EatIfPresent(lltok::comma)) {
1640 EltTyLoc = Lex.getLoc();
1641 if (ParseTypeRec(Result)) return true;
1643 if (Result->isVoidTy())
1644 return Error(EltTyLoc, "struct element can not have void type");
1645 if (!StructType::isValidElementType(Result))
1646 return Error(EltTyLoc, "invalid element type for struct");
1648 ParamsList.push_back(Result);
1651 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1654 std::vector<const Type*> ParamsListTy;
1655 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1656 ParamsListTy.push_back(ParamsList[i].get());
1657 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1663 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1664 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1665 assert(Lex.getKind() == lltok::kw_union);
1666 Lex.Lex(); // Consume the 'union'
1668 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1670 SmallVector<PATypeHolder, 8> ParamsList;
1672 LocTy EltTyLoc = Lex.getLoc();
1673 if (ParseTypeRec(Result)) return true;
1674 ParamsList.push_back(Result);
1676 if (Result->isVoidTy())
1677 return Error(EltTyLoc, "union element can not have void type");
1678 if (!UnionType::isValidElementType(Result))
1679 return Error(EltTyLoc, "invalid element type for union");
1681 } while (EatIfPresent(lltok::comma)) ;
1683 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1686 SmallVector<const Type*, 8> ParamsListTy;
1687 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1688 ParamsListTy.push_back(ParamsList[i].get());
1689 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1693 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1694 /// token has already been consumed.
1696 /// ::= '[' APSINTVAL 'x' Types ']'
1697 /// ::= '<' APSINTVAL 'x' Types '>'
1698 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1699 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1700 Lex.getAPSIntVal().getBitWidth() > 64)
1701 return TokError("expected number in address space");
1703 LocTy SizeLoc = Lex.getLoc();
1704 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1707 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1710 LocTy TypeLoc = Lex.getLoc();
1711 PATypeHolder EltTy(Type::getVoidTy(Context));
1712 if (ParseTypeRec(EltTy)) return true;
1714 if (EltTy->isVoidTy())
1715 return Error(TypeLoc, "array and vector element type cannot be void");
1717 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1718 "expected end of sequential type"))
1723 return Error(SizeLoc, "zero element vector is illegal");
1724 if ((unsigned)Size != Size)
1725 return Error(SizeLoc, "size too large for vector");
1726 if (!VectorType::isValidElementType(EltTy))
1727 return Error(TypeLoc, "vector element type must be fp or integer");
1728 Result = VectorType::get(EltTy, unsigned(Size));
1730 if (!ArrayType::isValidElementType(EltTy))
1731 return Error(TypeLoc, "invalid array element type");
1732 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1737 //===----------------------------------------------------------------------===//
1738 // Function Semantic Analysis.
1739 //===----------------------------------------------------------------------===//
1741 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1743 : P(p), F(f), FunctionNumber(functionNumber) {
1745 // Insert unnamed arguments into the NumberedVals list.
1746 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1749 NumberedVals.push_back(AI);
1752 LLParser::PerFunctionState::~PerFunctionState() {
1753 // If there were any forward referenced non-basicblock values, delete them.
1754 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1755 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1756 if (!isa<BasicBlock>(I->second.first)) {
1757 I->second.first->replaceAllUsesWith(
1758 UndefValue::get(I->second.first->getType()));
1759 delete I->second.first;
1760 I->second.first = 0;
1763 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1764 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1765 if (!isa<BasicBlock>(I->second.first)) {
1766 I->second.first->replaceAllUsesWith(
1767 UndefValue::get(I->second.first->getType()));
1768 delete I->second.first;
1769 I->second.first = 0;
1773 bool LLParser::PerFunctionState::FinishFunction() {
1774 // Check to see if someone took the address of labels in this block.
1775 if (!P.ForwardRefBlockAddresses.empty()) {
1777 if (!F.getName().empty()) {
1778 FunctionID.Kind = ValID::t_GlobalName;
1779 FunctionID.StrVal = F.getName();
1781 FunctionID.Kind = ValID::t_GlobalID;
1782 FunctionID.UIntVal = FunctionNumber;
1785 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1786 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1787 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1788 // Resolve all these references.
1789 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1792 P.ForwardRefBlockAddresses.erase(FRBAI);
1796 if (!ForwardRefVals.empty())
1797 return P.Error(ForwardRefVals.begin()->second.second,
1798 "use of undefined value '%" + ForwardRefVals.begin()->first +
1800 if (!ForwardRefValIDs.empty())
1801 return P.Error(ForwardRefValIDs.begin()->second.second,
1802 "use of undefined value '%" +
1803 utostr(ForwardRefValIDs.begin()->first) + "'");
1808 /// GetVal - Get a value with the specified name or ID, creating a
1809 /// forward reference record if needed. This can return null if the value
1810 /// exists but does not have the right type.
1811 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1812 const Type *Ty, LocTy Loc) {
1813 // Look this name up in the normal function symbol table.
1814 Value *Val = F.getValueSymbolTable().lookup(Name);
1816 // If this is a forward reference for the value, see if we already created a
1817 // forward ref record.
1819 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1820 I = ForwardRefVals.find(Name);
1821 if (I != ForwardRefVals.end())
1822 Val = I->second.first;
1825 // If we have the value in the symbol table or fwd-ref table, return it.
1827 if (Val->getType() == Ty) return Val;
1828 if (Ty->isLabelTy())
1829 P.Error(Loc, "'%" + Name + "' is not a basic block");
1831 P.Error(Loc, "'%" + Name + "' defined with type '" +
1832 Val->getType()->getDescription() + "'");
1836 // Don't make placeholders with invalid type.
1837 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1838 P.Error(Loc, "invalid use of a non-first-class type");
1842 // Otherwise, create a new forward reference for this value and remember it.
1844 if (Ty->isLabelTy())
1845 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1847 FwdVal = new Argument(Ty, Name);
1849 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1853 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1855 // Look this name up in the normal function symbol table.
1856 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1858 // If this is a forward reference for the value, see if we already created a
1859 // forward ref record.
1861 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1862 I = ForwardRefValIDs.find(ID);
1863 if (I != ForwardRefValIDs.end())
1864 Val = I->second.first;
1867 // If we have the value in the symbol table or fwd-ref table, return it.
1869 if (Val->getType() == Ty) return Val;
1870 if (Ty->isLabelTy())
1871 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1873 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1874 Val->getType()->getDescription() + "'");
1878 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1879 P.Error(Loc, "invalid use of a non-first-class type");
1883 // Otherwise, create a new forward reference for this value and remember it.
1885 if (Ty->isLabelTy())
1886 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1888 FwdVal = new Argument(Ty);
1890 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1894 /// SetInstName - After an instruction is parsed and inserted into its
1895 /// basic block, this installs its name.
1896 bool LLParser::PerFunctionState::SetInstName(int NameID,
1897 const std::string &NameStr,
1898 LocTy NameLoc, Instruction *Inst) {
1899 // If this instruction has void type, it cannot have a name or ID specified.
1900 if (Inst->getType()->isVoidTy()) {
1901 if (NameID != -1 || !NameStr.empty())
1902 return P.Error(NameLoc, "instructions returning void cannot have a name");
1906 // If this was a numbered instruction, verify that the instruction is the
1907 // expected value and resolve any forward references.
1908 if (NameStr.empty()) {
1909 // If neither a name nor an ID was specified, just use the next ID.
1911 NameID = NumberedVals.size();
1913 if (unsigned(NameID) != NumberedVals.size())
1914 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1915 utostr(NumberedVals.size()) + "'");
1917 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1918 ForwardRefValIDs.find(NameID);
1919 if (FI != ForwardRefValIDs.end()) {
1920 if (FI->second.first->getType() != Inst->getType())
1921 return P.Error(NameLoc, "instruction forward referenced with type '" +
1922 FI->second.first->getType()->getDescription() + "'");
1923 FI->second.first->replaceAllUsesWith(Inst);
1924 delete FI->second.first;
1925 ForwardRefValIDs.erase(FI);
1928 NumberedVals.push_back(Inst);
1932 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1933 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1934 FI = ForwardRefVals.find(NameStr);
1935 if (FI != ForwardRefVals.end()) {
1936 if (FI->second.first->getType() != Inst->getType())
1937 return P.Error(NameLoc, "instruction forward referenced with type '" +
1938 FI->second.first->getType()->getDescription() + "'");
1939 FI->second.first->replaceAllUsesWith(Inst);
1940 delete FI->second.first;
1941 ForwardRefVals.erase(FI);
1944 // Set the name on the instruction.
1945 Inst->setName(NameStr);
1947 if (Inst->getNameStr() != NameStr)
1948 return P.Error(NameLoc, "multiple definition of local value named '" +
1953 /// GetBB - Get a basic block with the specified name or ID, creating a
1954 /// forward reference record if needed.
1955 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1957 return cast_or_null<BasicBlock>(GetVal(Name,
1958 Type::getLabelTy(F.getContext()), Loc));
1961 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1962 return cast_or_null<BasicBlock>(GetVal(ID,
1963 Type::getLabelTy(F.getContext()), Loc));
1966 /// DefineBB - Define the specified basic block, which is either named or
1967 /// unnamed. If there is an error, this returns null otherwise it returns
1968 /// the block being defined.
1969 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1973 BB = GetBB(NumberedVals.size(), Loc);
1975 BB = GetBB(Name, Loc);
1976 if (BB == 0) return 0; // Already diagnosed error.
1978 // Move the block to the end of the function. Forward ref'd blocks are
1979 // inserted wherever they happen to be referenced.
1980 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1982 // Remove the block from forward ref sets.
1984 ForwardRefValIDs.erase(NumberedVals.size());
1985 NumberedVals.push_back(BB);
1987 // BB forward references are already in the function symbol table.
1988 ForwardRefVals.erase(Name);
1994 //===----------------------------------------------------------------------===//
1996 //===----------------------------------------------------------------------===//
1998 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1999 /// type implied. For example, if we parse "4" we don't know what integer type
2000 /// it has. The value will later be combined with its type and checked for
2001 /// sanity. PFS is used to convert function-local operands of metadata (since
2002 /// metadata operands are not just parsed here but also converted to values).
2003 /// PFS can be null when we are not parsing metadata values inside a function.
2004 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2005 ID.Loc = Lex.getLoc();
2006 switch (Lex.getKind()) {
2007 default: return TokError("expected value token");
2008 case lltok::GlobalID: // @42
2009 ID.UIntVal = Lex.getUIntVal();
2010 ID.Kind = ValID::t_GlobalID;
2012 case lltok::GlobalVar: // @foo
2013 ID.StrVal = Lex.getStrVal();
2014 ID.Kind = ValID::t_GlobalName;
2016 case lltok::LocalVarID: // %42
2017 ID.UIntVal = Lex.getUIntVal();
2018 ID.Kind = ValID::t_LocalID;
2020 case lltok::LocalVar: // %foo
2021 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2022 ID.StrVal = Lex.getStrVal();
2023 ID.Kind = ValID::t_LocalName;
2025 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2028 if (EatIfPresent(lltok::lbrace)) {
2029 SmallVector<Value*, 16> Elts;
2030 if (ParseMDNodeVector(Elts, PFS) ||
2031 ParseToken(lltok::rbrace, "expected end of metadata node"))
2034 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2035 ID.Kind = ValID::t_MDNode;
2039 // Standalone metadata reference
2040 // !{ ..., !42, ... }
2041 if (Lex.getKind() == lltok::APSInt) {
2042 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2043 ID.Kind = ValID::t_MDNode;
2048 // ::= '!' STRINGCONSTANT
2049 if (ParseMDString(ID.MDStringVal)) return true;
2050 ID.Kind = ValID::t_MDString;
2053 ID.APSIntVal = Lex.getAPSIntVal();
2054 ID.Kind = ValID::t_APSInt;
2056 case lltok::APFloat:
2057 ID.APFloatVal = Lex.getAPFloatVal();
2058 ID.Kind = ValID::t_APFloat;
2060 case lltok::kw_true:
2061 ID.ConstantVal = ConstantInt::getTrue(Context);
2062 ID.Kind = ValID::t_Constant;
2064 case lltok::kw_false:
2065 ID.ConstantVal = ConstantInt::getFalse(Context);
2066 ID.Kind = ValID::t_Constant;
2068 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2069 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2070 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2072 case lltok::lbrace: {
2073 // ValID ::= '{' ConstVector '}'
2075 SmallVector<Constant*, 16> Elts;
2076 if (ParseGlobalValueVector(Elts) ||
2077 ParseToken(lltok::rbrace, "expected end of struct constant"))
2080 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2081 Elts.size(), false);
2082 ID.Kind = ValID::t_Constant;
2086 // ValID ::= '<' ConstVector '>' --> Vector.
2087 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2089 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2091 SmallVector<Constant*, 16> Elts;
2092 LocTy FirstEltLoc = Lex.getLoc();
2093 if (ParseGlobalValueVector(Elts) ||
2095 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2096 ParseToken(lltok::greater, "expected end of constant"))
2099 if (isPackedStruct) {
2101 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2102 ID.Kind = ValID::t_Constant;
2107 return Error(ID.Loc, "constant vector must not be empty");
2109 if (!Elts[0]->getType()->isIntegerTy() &&
2110 !Elts[0]->getType()->isFloatingPointTy())
2111 return Error(FirstEltLoc,
2112 "vector elements must have integer or floating point type");
2114 // Verify that all the vector elements have the same type.
2115 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2116 if (Elts[i]->getType() != Elts[0]->getType())
2117 return Error(FirstEltLoc,
2118 "vector element #" + utostr(i) +
2119 " is not of type '" + Elts[0]->getType()->getDescription());
2121 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2122 ID.Kind = ValID::t_Constant;
2125 case lltok::lsquare: { // Array Constant
2127 SmallVector<Constant*, 16> Elts;
2128 LocTy FirstEltLoc = Lex.getLoc();
2129 if (ParseGlobalValueVector(Elts) ||
2130 ParseToken(lltok::rsquare, "expected end of array constant"))
2133 // Handle empty element.
2135 // Use undef instead of an array because it's inconvenient to determine
2136 // the element type at this point, there being no elements to examine.
2137 ID.Kind = ValID::t_EmptyArray;
2141 if (!Elts[0]->getType()->isFirstClassType())
2142 return Error(FirstEltLoc, "invalid array element type: " +
2143 Elts[0]->getType()->getDescription());
2145 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2147 // Verify all elements are correct type!
2148 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2149 if (Elts[i]->getType() != Elts[0]->getType())
2150 return Error(FirstEltLoc,
2151 "array element #" + utostr(i) +
2152 " is not of type '" +Elts[0]->getType()->getDescription());
2155 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2156 ID.Kind = ValID::t_Constant;
2159 case lltok::kw_c: // c "foo"
2161 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2162 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2163 ID.Kind = ValID::t_Constant;
2166 case lltok::kw_asm: {
2167 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2168 bool HasSideEffect, AlignStack;
2170 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2171 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2172 ParseStringConstant(ID.StrVal) ||
2173 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2174 ParseToken(lltok::StringConstant, "expected constraint string"))
2176 ID.StrVal2 = Lex.getStrVal();
2177 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2178 ID.Kind = ValID::t_InlineAsm;
2182 case lltok::kw_blockaddress: {
2183 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2187 LocTy FnLoc, LabelLoc;
2189 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2191 ParseToken(lltok::comma, "expected comma in block address expression")||
2192 ParseValID(Label) ||
2193 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2196 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2197 return Error(Fn.Loc, "expected function name in blockaddress");
2198 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2199 return Error(Label.Loc, "expected basic block name in blockaddress");
2201 // Make a global variable as a placeholder for this reference.
2202 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2203 false, GlobalValue::InternalLinkage,
2205 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2206 ID.ConstantVal = FwdRef;
2207 ID.Kind = ValID::t_Constant;
2211 case lltok::kw_trunc:
2212 case lltok::kw_zext:
2213 case lltok::kw_sext:
2214 case lltok::kw_fptrunc:
2215 case lltok::kw_fpext:
2216 case lltok::kw_bitcast:
2217 case lltok::kw_uitofp:
2218 case lltok::kw_sitofp:
2219 case lltok::kw_fptoui:
2220 case lltok::kw_fptosi:
2221 case lltok::kw_inttoptr:
2222 case lltok::kw_ptrtoint: {
2223 unsigned Opc = Lex.getUIntVal();
2224 PATypeHolder DestTy(Type::getVoidTy(Context));
2227 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2228 ParseGlobalTypeAndValue(SrcVal) ||
2229 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2230 ParseType(DestTy) ||
2231 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2233 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2234 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2235 SrcVal->getType()->getDescription() + "' to '" +
2236 DestTy->getDescription() + "'");
2237 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2239 ID.Kind = ValID::t_Constant;
2242 case lltok::kw_extractvalue: {
2245 SmallVector<unsigned, 4> Indices;
2246 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2247 ParseGlobalTypeAndValue(Val) ||
2248 ParseIndexList(Indices) ||
2249 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2252 if (!Val->getType()->isAggregateType())
2253 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2254 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2256 return Error(ID.Loc, "invalid indices for extractvalue");
2258 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2259 ID.Kind = ValID::t_Constant;
2262 case lltok::kw_insertvalue: {
2264 Constant *Val0, *Val1;
2265 SmallVector<unsigned, 4> Indices;
2266 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2267 ParseGlobalTypeAndValue(Val0) ||
2268 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2269 ParseGlobalTypeAndValue(Val1) ||
2270 ParseIndexList(Indices) ||
2271 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2273 if (!Val0->getType()->isAggregateType())
2274 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2275 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2277 return Error(ID.Loc, "invalid indices for insertvalue");
2278 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2279 Indices.data(), Indices.size());
2280 ID.Kind = ValID::t_Constant;
2283 case lltok::kw_icmp:
2284 case lltok::kw_fcmp: {
2285 unsigned PredVal, Opc = Lex.getUIntVal();
2286 Constant *Val0, *Val1;
2288 if (ParseCmpPredicate(PredVal, Opc) ||
2289 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2290 ParseGlobalTypeAndValue(Val0) ||
2291 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2292 ParseGlobalTypeAndValue(Val1) ||
2293 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2296 if (Val0->getType() != Val1->getType())
2297 return Error(ID.Loc, "compare operands must have the same type");
2299 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2301 if (Opc == Instruction::FCmp) {
2302 if (!Val0->getType()->isFPOrFPVectorTy())
2303 return Error(ID.Loc, "fcmp requires floating point operands");
2304 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2306 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2307 if (!Val0->getType()->isIntOrIntVectorTy() &&
2308 !Val0->getType()->isPointerTy())
2309 return Error(ID.Loc, "icmp requires pointer or integer operands");
2310 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2312 ID.Kind = ValID::t_Constant;
2316 // Binary Operators.
2318 case lltok::kw_fadd:
2320 case lltok::kw_fsub:
2322 case lltok::kw_fmul:
2323 case lltok::kw_udiv:
2324 case lltok::kw_sdiv:
2325 case lltok::kw_fdiv:
2326 case lltok::kw_urem:
2327 case lltok::kw_srem:
2328 case lltok::kw_frem: {
2332 unsigned Opc = Lex.getUIntVal();
2333 Constant *Val0, *Val1;
2335 LocTy ModifierLoc = Lex.getLoc();
2336 if (Opc == Instruction::Add ||
2337 Opc == Instruction::Sub ||
2338 Opc == Instruction::Mul) {
2339 if (EatIfPresent(lltok::kw_nuw))
2341 if (EatIfPresent(lltok::kw_nsw)) {
2343 if (EatIfPresent(lltok::kw_nuw))
2346 } else if (Opc == Instruction::SDiv) {
2347 if (EatIfPresent(lltok::kw_exact))
2350 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2351 ParseGlobalTypeAndValue(Val0) ||
2352 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2353 ParseGlobalTypeAndValue(Val1) ||
2354 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2356 if (Val0->getType() != Val1->getType())
2357 return Error(ID.Loc, "operands of constexpr must have same type");
2358 if (!Val0->getType()->isIntOrIntVectorTy()) {
2360 return Error(ModifierLoc, "nuw only applies to integer operations");
2362 return Error(ModifierLoc, "nsw only applies to integer operations");
2364 // Check that the type is valid for the operator.
2366 case Instruction::Add:
2367 case Instruction::Sub:
2368 case Instruction::Mul:
2369 case Instruction::UDiv:
2370 case Instruction::SDiv:
2371 case Instruction::URem:
2372 case Instruction::SRem:
2373 if (!Val0->getType()->isIntOrIntVectorTy())
2374 return Error(ID.Loc, "constexpr requires integer operands");
2376 case Instruction::FAdd:
2377 case Instruction::FSub:
2378 case Instruction::FMul:
2379 case Instruction::FDiv:
2380 case Instruction::FRem:
2381 if (!Val0->getType()->isFPOrFPVectorTy())
2382 return Error(ID.Loc, "constexpr requires fp operands");
2384 default: llvm_unreachable("Unknown binary operator!");
2387 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2388 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2389 if (Exact) Flags |= SDivOperator::IsExact;
2390 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2392 ID.Kind = ValID::t_Constant;
2396 // Logical Operations
2398 case lltok::kw_lshr:
2399 case lltok::kw_ashr:
2402 case lltok::kw_xor: {
2403 unsigned Opc = Lex.getUIntVal();
2404 Constant *Val0, *Val1;
2406 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2407 ParseGlobalTypeAndValue(Val0) ||
2408 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2409 ParseGlobalTypeAndValue(Val1) ||
2410 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2412 if (Val0->getType() != Val1->getType())
2413 return Error(ID.Loc, "operands of constexpr must have same type");
2414 if (!Val0->getType()->isIntOrIntVectorTy())
2415 return Error(ID.Loc,
2416 "constexpr requires integer or integer vector operands");
2417 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2418 ID.Kind = ValID::t_Constant;
2422 case lltok::kw_getelementptr:
2423 case lltok::kw_shufflevector:
2424 case lltok::kw_insertelement:
2425 case lltok::kw_extractelement:
2426 case lltok::kw_select: {
2427 unsigned Opc = Lex.getUIntVal();
2428 SmallVector<Constant*, 16> Elts;
2429 bool InBounds = false;
2431 if (Opc == Instruction::GetElementPtr)
2432 InBounds = EatIfPresent(lltok::kw_inbounds);
2433 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2434 ParseGlobalValueVector(Elts) ||
2435 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2438 if (Opc == Instruction::GetElementPtr) {
2439 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2440 return Error(ID.Loc, "getelementptr requires pointer operand");
2442 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2443 (Value**)(Elts.data() + 1),
2445 return Error(ID.Loc, "invalid indices for getelementptr");
2446 ID.ConstantVal = InBounds ?
2447 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2450 ConstantExpr::getGetElementPtr(Elts[0],
2451 Elts.data() + 1, Elts.size() - 1);
2452 } else if (Opc == Instruction::Select) {
2453 if (Elts.size() != 3)
2454 return Error(ID.Loc, "expected three operands to select");
2455 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2457 return Error(ID.Loc, Reason);
2458 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2459 } else if (Opc == Instruction::ShuffleVector) {
2460 if (Elts.size() != 3)
2461 return Error(ID.Loc, "expected three operands to shufflevector");
2462 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2463 return Error(ID.Loc, "invalid operands to shufflevector");
2465 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2466 } else if (Opc == Instruction::ExtractElement) {
2467 if (Elts.size() != 2)
2468 return Error(ID.Loc, "expected two operands to extractelement");
2469 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2470 return Error(ID.Loc, "invalid extractelement operands");
2471 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2473 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2474 if (Elts.size() != 3)
2475 return Error(ID.Loc, "expected three operands to insertelement");
2476 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2477 return Error(ID.Loc, "invalid insertelement operands");
2479 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2482 ID.Kind = ValID::t_Constant;
2491 /// ParseGlobalValue - Parse a global value with the specified type.
2492 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2496 bool Parsed = ParseValID(ID) ||
2497 ConvertValIDToValue(Ty, ID, V, NULL);
2498 if (V && !(C = dyn_cast<Constant>(V)))
2499 return Error(ID.Loc, "global values must be constants");
2503 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2504 PATypeHolder Type(Type::getVoidTy(Context));
2505 return ParseType(Type) ||
2506 ParseGlobalValue(Type, V);
2509 /// ParseGlobalValueVector
2511 /// ::= TypeAndValue (',' TypeAndValue)*
2512 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2514 if (Lex.getKind() == lltok::rbrace ||
2515 Lex.getKind() == lltok::rsquare ||
2516 Lex.getKind() == lltok::greater ||
2517 Lex.getKind() == lltok::rparen)
2521 if (ParseGlobalTypeAndValue(C)) return true;
2524 while (EatIfPresent(lltok::comma)) {
2525 if (ParseGlobalTypeAndValue(C)) return true;
2533 //===----------------------------------------------------------------------===//
2534 // Function Parsing.
2535 //===----------------------------------------------------------------------===//
2537 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2538 PerFunctionState *PFS) {
2539 if (Ty->isFunctionTy())
2540 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2543 default: llvm_unreachable("Unknown ValID!");
2544 case ValID::t_LocalID:
2545 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2546 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2548 case ValID::t_LocalName:
2549 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2550 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2552 case ValID::t_InlineAsm: {
2553 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2554 const FunctionType *FTy =
2555 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2556 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2557 return Error(ID.Loc, "invalid type for inline asm constraint string");
2558 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2561 case ValID::t_MDNode:
2562 if (!Ty->isMetadataTy())
2563 return Error(ID.Loc, "metadata value must have metadata type");
2566 case ValID::t_MDString:
2567 if (!Ty->isMetadataTy())
2568 return Error(ID.Loc, "metadata value must have metadata type");
2571 case ValID::t_GlobalName:
2572 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2574 case ValID::t_GlobalID:
2575 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2577 case ValID::t_APSInt:
2578 if (!Ty->isIntegerTy())
2579 return Error(ID.Loc, "integer constant must have integer type");
2580 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2581 V = ConstantInt::get(Context, ID.APSIntVal);
2583 case ValID::t_APFloat:
2584 if (!Ty->isFloatingPointTy() ||
2585 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2586 return Error(ID.Loc, "floating point constant invalid for type");
2588 // The lexer has no type info, so builds all float and double FP constants
2589 // as double. Fix this here. Long double does not need this.
2590 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2593 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2596 V = ConstantFP::get(Context, ID.APFloatVal);
2598 if (V->getType() != Ty)
2599 return Error(ID.Loc, "floating point constant does not have type '" +
2600 Ty->getDescription() + "'");
2604 if (!Ty->isPointerTy())
2605 return Error(ID.Loc, "null must be a pointer type");
2606 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2608 case ValID::t_Undef:
2609 // FIXME: LabelTy should not be a first-class type.
2610 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2612 return Error(ID.Loc, "invalid type for undef constant");
2613 V = UndefValue::get(Ty);
2615 case ValID::t_EmptyArray:
2616 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2617 return Error(ID.Loc, "invalid empty array initializer");
2618 V = UndefValue::get(Ty);
2621 // FIXME: LabelTy should not be a first-class type.
2622 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2623 return Error(ID.Loc, "invalid type for null constant");
2624 V = Constant::getNullValue(Ty);
2626 case ValID::t_Constant:
2627 if (ID.ConstantVal->getType() != Ty) {
2628 // Allow a constant struct with a single member to be converted
2629 // to a union, if the union has a member which is the same type
2630 // as the struct member.
2631 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2632 return ParseUnionValue(utype, ID, V);
2635 return Error(ID.Loc, "constant expression type mismatch");
2643 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2646 return ParseValID(ID, &PFS) ||
2647 ConvertValIDToValue(Ty, ID, V, &PFS);
2650 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2651 PATypeHolder T(Type::getVoidTy(Context));
2652 return ParseType(T) ||
2653 ParseValue(T, V, PFS);
2656 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2657 PerFunctionState &PFS) {
2660 if (ParseTypeAndValue(V, PFS)) return true;
2661 if (!isa<BasicBlock>(V))
2662 return Error(Loc, "expected a basic block");
2663 BB = cast<BasicBlock>(V);
2667 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2668 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2669 if (stype->getNumContainedTypes() != 1)
2670 return Error(ID.Loc, "constant expression type mismatch");
2671 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2673 return Error(ID.Loc, "initializer type is not a member of the union");
2675 V = ConstantUnion::get(
2676 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2680 return Error(ID.Loc, "constant expression type mismatch");
2685 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2686 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2687 /// OptionalAlign OptGC
2688 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2689 // Parse the linkage.
2690 LocTy LinkageLoc = Lex.getLoc();
2693 unsigned Visibility, RetAttrs;
2695 PATypeHolder RetType(Type::getVoidTy(Context));
2696 LocTy RetTypeLoc = Lex.getLoc();
2697 if (ParseOptionalLinkage(Linkage) ||
2698 ParseOptionalVisibility(Visibility) ||
2699 ParseOptionalCallingConv(CC) ||
2700 ParseOptionalAttrs(RetAttrs, 1) ||
2701 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2704 // Verify that the linkage is ok.
2705 switch ((GlobalValue::LinkageTypes)Linkage) {
2706 case GlobalValue::ExternalLinkage:
2707 break; // always ok.
2708 case GlobalValue::DLLImportLinkage:
2709 case GlobalValue::ExternalWeakLinkage:
2711 return Error(LinkageLoc, "invalid linkage for function definition");
2713 case GlobalValue::PrivateLinkage:
2714 case GlobalValue::LinkerPrivateLinkage:
2715 case GlobalValue::LinkerPrivateWeakLinkage:
2716 case GlobalValue::InternalLinkage:
2717 case GlobalValue::AvailableExternallyLinkage:
2718 case GlobalValue::LinkOnceAnyLinkage:
2719 case GlobalValue::LinkOnceODRLinkage:
2720 case GlobalValue::WeakAnyLinkage:
2721 case GlobalValue::WeakODRLinkage:
2722 case GlobalValue::DLLExportLinkage:
2724 return Error(LinkageLoc, "invalid linkage for function declaration");
2726 case GlobalValue::AppendingLinkage:
2727 case GlobalValue::CommonLinkage:
2728 return Error(LinkageLoc, "invalid function linkage type");
2731 if (!FunctionType::isValidReturnType(RetType) ||
2732 RetType->isOpaqueTy())
2733 return Error(RetTypeLoc, "invalid function return type");
2735 LocTy NameLoc = Lex.getLoc();
2737 std::string FunctionName;
2738 if (Lex.getKind() == lltok::GlobalVar) {
2739 FunctionName = Lex.getStrVal();
2740 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2741 unsigned NameID = Lex.getUIntVal();
2743 if (NameID != NumberedVals.size())
2744 return TokError("function expected to be numbered '%" +
2745 utostr(NumberedVals.size()) + "'");
2747 return TokError("expected function name");
2752 if (Lex.getKind() != lltok::lparen)
2753 return TokError("expected '(' in function argument list");
2755 std::vector<ArgInfo> ArgList;
2758 std::string Section;
2762 if (ParseArgumentList(ArgList, isVarArg, false) ||
2763 ParseOptionalAttrs(FuncAttrs, 2) ||
2764 (EatIfPresent(lltok::kw_section) &&
2765 ParseStringConstant(Section)) ||
2766 ParseOptionalAlignment(Alignment) ||
2767 (EatIfPresent(lltok::kw_gc) &&
2768 ParseStringConstant(GC)))
2771 // If the alignment was parsed as an attribute, move to the alignment field.
2772 if (FuncAttrs & Attribute::Alignment) {
2773 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2774 FuncAttrs &= ~Attribute::Alignment;
2777 // Okay, if we got here, the function is syntactically valid. Convert types
2778 // and do semantic checks.
2779 std::vector<const Type*> ParamTypeList;
2780 SmallVector<AttributeWithIndex, 8> Attrs;
2781 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2783 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2784 if (FuncAttrs & ObsoleteFuncAttrs) {
2785 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2786 FuncAttrs &= ~ObsoleteFuncAttrs;
2789 if (RetAttrs != Attribute::None)
2790 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2792 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2793 ParamTypeList.push_back(ArgList[i].Type);
2794 if (ArgList[i].Attrs != Attribute::None)
2795 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2798 if (FuncAttrs != Attribute::None)
2799 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2801 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2803 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2804 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2806 const FunctionType *FT =
2807 FunctionType::get(RetType, ParamTypeList, isVarArg);
2808 const PointerType *PFT = PointerType::getUnqual(FT);
2811 if (!FunctionName.empty()) {
2812 // If this was a definition of a forward reference, remove the definition
2813 // from the forward reference table and fill in the forward ref.
2814 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2815 ForwardRefVals.find(FunctionName);
2816 if (FRVI != ForwardRefVals.end()) {
2817 Fn = M->getFunction(FunctionName);
2818 if (Fn->getType() != PFT)
2819 return Error(FRVI->second.second, "invalid forward reference to "
2820 "function '" + FunctionName + "' with wrong type!");
2822 ForwardRefVals.erase(FRVI);
2823 } else if ((Fn = M->getFunction(FunctionName))) {
2824 // If this function already exists in the symbol table, then it is
2825 // multiply defined. We accept a few cases for old backwards compat.
2826 // FIXME: Remove this stuff for LLVM 3.0.
2827 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2828 (!Fn->isDeclaration() && isDefine)) {
2829 // If the redefinition has different type or different attributes,
2830 // reject it. If both have bodies, reject it.
2831 return Error(NameLoc, "invalid redefinition of function '" +
2832 FunctionName + "'");
2833 } else if (Fn->isDeclaration()) {
2834 // Make sure to strip off any argument names so we can't get conflicts.
2835 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2839 } else if (M->getNamedValue(FunctionName)) {
2840 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2844 // If this is a definition of a forward referenced function, make sure the
2846 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2847 = ForwardRefValIDs.find(NumberedVals.size());
2848 if (I != ForwardRefValIDs.end()) {
2849 Fn = cast<Function>(I->second.first);
2850 if (Fn->getType() != PFT)
2851 return Error(NameLoc, "type of definition and forward reference of '@" +
2852 utostr(NumberedVals.size()) +"' disagree");
2853 ForwardRefValIDs.erase(I);
2858 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2859 else // Move the forward-reference to the correct spot in the module.
2860 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2862 if (FunctionName.empty())
2863 NumberedVals.push_back(Fn);
2865 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2866 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2867 Fn->setCallingConv(CC);
2868 Fn->setAttributes(PAL);
2869 Fn->setAlignment(Alignment);
2870 Fn->setSection(Section);
2871 if (!GC.empty()) Fn->setGC(GC.c_str());
2873 // Add all of the arguments we parsed to the function.
2874 Function::arg_iterator ArgIt = Fn->arg_begin();
2875 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2876 // If we run out of arguments in the Function prototype, exit early.
2877 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2878 if (ArgIt == Fn->arg_end()) break;
2880 // If the argument has a name, insert it into the argument symbol table.
2881 if (ArgList[i].Name.empty()) continue;
2883 // Set the name, if it conflicted, it will be auto-renamed.
2884 ArgIt->setName(ArgList[i].Name);
2886 if (ArgIt->getNameStr() != ArgList[i].Name)
2887 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2888 ArgList[i].Name + "'");
2895 /// ParseFunctionBody
2896 /// ::= '{' BasicBlock+ '}'
2897 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2899 bool LLParser::ParseFunctionBody(Function &Fn) {
2900 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2901 return TokError("expected '{' in function body");
2902 Lex.Lex(); // eat the {.
2904 int FunctionNumber = -1;
2905 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2907 PerFunctionState PFS(*this, Fn, FunctionNumber);
2909 // We need at least one basic block.
2910 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2911 return TokError("function body requires at least one basic block");
2913 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2914 if (ParseBasicBlock(PFS)) return true;
2919 // Verify function is ok.
2920 return PFS.FinishFunction();
2924 /// ::= LabelStr? Instruction*
2925 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2926 // If this basic block starts out with a name, remember it.
2928 LocTy NameLoc = Lex.getLoc();
2929 if (Lex.getKind() == lltok::LabelStr) {
2930 Name = Lex.getStrVal();
2934 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2935 if (BB == 0) return true;
2937 std::string NameStr;
2939 // Parse the instructions in this block until we get a terminator.
2941 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2943 // This instruction may have three possibilities for a name: a) none
2944 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2945 LocTy NameLoc = Lex.getLoc();
2949 if (Lex.getKind() == lltok::LocalVarID) {
2950 NameID = Lex.getUIntVal();
2952 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2954 } else if (Lex.getKind() == lltok::LocalVar ||
2955 // FIXME: REMOVE IN LLVM 3.0
2956 Lex.getKind() == lltok::StringConstant) {
2957 NameStr = Lex.getStrVal();
2959 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2963 switch (ParseInstruction(Inst, BB, PFS)) {
2964 default: assert(0 && "Unknown ParseInstruction result!");
2965 case InstError: return true;
2967 BB->getInstList().push_back(Inst);
2969 // With a normal result, we check to see if the instruction is followed by
2970 // a comma and metadata.
2971 if (EatIfPresent(lltok::comma))
2972 if (ParseInstructionMetadata(Inst))
2975 case InstExtraComma:
2976 BB->getInstList().push_back(Inst);
2978 // If the instruction parser ate an extra comma at the end of it, it
2979 // *must* be followed by metadata.
2980 if (ParseInstructionMetadata(Inst))
2985 // Set the name on the instruction.
2986 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2987 } while (!isa<TerminatorInst>(Inst));
2992 //===----------------------------------------------------------------------===//
2993 // Instruction Parsing.
2994 //===----------------------------------------------------------------------===//
2996 /// ParseInstruction - Parse one of the many different instructions.
2998 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2999 PerFunctionState &PFS) {
3000 lltok::Kind Token = Lex.getKind();
3001 if (Token == lltok::Eof)
3002 return TokError("found end of file when expecting more instructions");
3003 LocTy Loc = Lex.getLoc();
3004 unsigned KeywordVal = Lex.getUIntVal();
3005 Lex.Lex(); // Eat the keyword.
3008 default: return Error(Loc, "expected instruction opcode");
3009 // Terminator Instructions.
3010 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3011 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3012 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3013 case lltok::kw_br: return ParseBr(Inst, PFS);
3014 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3015 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3016 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3017 // Binary Operators.
3020 case lltok::kw_mul: {
3023 LocTy ModifierLoc = Lex.getLoc();
3024 if (EatIfPresent(lltok::kw_nuw))
3026 if (EatIfPresent(lltok::kw_nsw)) {
3028 if (EatIfPresent(lltok::kw_nuw))
3031 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3033 if (!Inst->getType()->isIntOrIntVectorTy()) {
3035 return Error(ModifierLoc, "nuw only applies to integer operations");
3037 return Error(ModifierLoc, "nsw only applies to integer operations");
3040 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3042 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3046 case lltok::kw_fadd:
3047 case lltok::kw_fsub:
3048 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3050 case lltok::kw_sdiv: {
3052 if (EatIfPresent(lltok::kw_exact))
3054 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3057 cast<BinaryOperator>(Inst)->setIsExact(true);
3061 case lltok::kw_udiv:
3062 case lltok::kw_urem:
3063 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3064 case lltok::kw_fdiv:
3065 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3067 case lltok::kw_lshr:
3068 case lltok::kw_ashr:
3071 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3072 case lltok::kw_icmp:
3073 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3075 case lltok::kw_trunc:
3076 case lltok::kw_zext:
3077 case lltok::kw_sext:
3078 case lltok::kw_fptrunc:
3079 case lltok::kw_fpext:
3080 case lltok::kw_bitcast:
3081 case lltok::kw_uitofp:
3082 case lltok::kw_sitofp:
3083 case lltok::kw_fptoui:
3084 case lltok::kw_fptosi:
3085 case lltok::kw_inttoptr:
3086 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3088 case lltok::kw_select: return ParseSelect(Inst, PFS);
3089 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3090 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3091 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3092 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3093 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3094 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3095 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3097 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3098 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3099 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3100 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3101 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3102 case lltok::kw_volatile:
3103 if (EatIfPresent(lltok::kw_load))
3104 return ParseLoad(Inst, PFS, true);
3105 else if (EatIfPresent(lltok::kw_store))
3106 return ParseStore(Inst, PFS, true);
3108 return TokError("expected 'load' or 'store'");
3109 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3110 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3111 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3112 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3116 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3117 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3118 if (Opc == Instruction::FCmp) {
3119 switch (Lex.getKind()) {
3120 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3121 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3122 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3123 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3124 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3125 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3126 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3127 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3128 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3129 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3130 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3131 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3132 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3133 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3134 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3135 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3136 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3139 switch (Lex.getKind()) {
3140 default: TokError("expected icmp predicate (e.g. 'eq')");
3141 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3142 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3143 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3144 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3145 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3146 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3147 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3148 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3149 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3150 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3157 //===----------------------------------------------------------------------===//
3158 // Terminator Instructions.
3159 //===----------------------------------------------------------------------===//
3161 /// ParseRet - Parse a return instruction.
3162 /// ::= 'ret' void (',' !dbg, !1)*
3163 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3164 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3165 /// [[obsolete: LLVM 3.0]]
3166 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3167 PerFunctionState &PFS) {
3168 PATypeHolder Ty(Type::getVoidTy(Context));
3169 if (ParseType(Ty, true /*void allowed*/)) return true;
3171 if (Ty->isVoidTy()) {
3172 Inst = ReturnInst::Create(Context);
3177 if (ParseValue(Ty, RV, PFS)) return true;
3179 bool ExtraComma = false;
3180 if (EatIfPresent(lltok::comma)) {
3181 // Parse optional custom metadata, e.g. !dbg
3182 if (Lex.getKind() == lltok::MetadataVar) {
3185 // The normal case is one return value.
3186 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3187 // use of 'ret {i32,i32} {i32 1, i32 2}'
3188 SmallVector<Value*, 8> RVs;
3192 // If optional custom metadata, e.g. !dbg is seen then this is the
3194 if (Lex.getKind() == lltok::MetadataVar)
3196 if (ParseTypeAndValue(RV, PFS)) return true;
3198 } while (EatIfPresent(lltok::comma));
3200 RV = UndefValue::get(PFS.getFunction().getReturnType());
3201 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3202 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3203 BB->getInstList().push_back(I);
3209 Inst = ReturnInst::Create(Context, RV);
3210 return ExtraComma ? InstExtraComma : InstNormal;
3215 /// ::= 'br' TypeAndValue
3216 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3217 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3220 BasicBlock *Op1, *Op2;
3221 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3223 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3224 Inst = BranchInst::Create(BB);
3228 if (Op0->getType() != Type::getInt1Ty(Context))
3229 return Error(Loc, "branch condition must have 'i1' type");
3231 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3232 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3233 ParseToken(lltok::comma, "expected ',' after true destination") ||
3234 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3237 Inst = BranchInst::Create(Op1, Op2, Op0);
3243 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3245 /// ::= (TypeAndValue ',' TypeAndValue)*
3246 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3247 LocTy CondLoc, BBLoc;
3249 BasicBlock *DefaultBB;
3250 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3251 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3252 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3253 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3256 if (!Cond->getType()->isIntegerTy())
3257 return Error(CondLoc, "switch condition must have integer type");
3259 // Parse the jump table pairs.
3260 SmallPtrSet<Value*, 32> SeenCases;
3261 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3262 while (Lex.getKind() != lltok::rsquare) {
3266 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3267 ParseToken(lltok::comma, "expected ',' after case value") ||
3268 ParseTypeAndBasicBlock(DestBB, PFS))
3271 if (!SeenCases.insert(Constant))
3272 return Error(CondLoc, "duplicate case value in switch");
3273 if (!isa<ConstantInt>(Constant))
3274 return Error(CondLoc, "case value is not a constant integer");
3276 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3279 Lex.Lex(); // Eat the ']'.
3281 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3282 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3283 SI->addCase(Table[i].first, Table[i].second);
3290 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3291 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3294 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3295 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3296 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3299 if (!Address->getType()->isPointerTy())
3300 return Error(AddrLoc, "indirectbr address must have pointer type");
3302 // Parse the destination list.
3303 SmallVector<BasicBlock*, 16> DestList;
3305 if (Lex.getKind() != lltok::rsquare) {
3307 if (ParseTypeAndBasicBlock(DestBB, PFS))
3309 DestList.push_back(DestBB);
3311 while (EatIfPresent(lltok::comma)) {
3312 if (ParseTypeAndBasicBlock(DestBB, PFS))
3314 DestList.push_back(DestBB);
3318 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3321 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3322 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3323 IBI->addDestination(DestList[i]);
3330 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3331 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3332 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3333 LocTy CallLoc = Lex.getLoc();
3334 unsigned RetAttrs, FnAttrs;
3336 PATypeHolder RetType(Type::getVoidTy(Context));
3339 SmallVector<ParamInfo, 16> ArgList;
3341 BasicBlock *NormalBB, *UnwindBB;
3342 if (ParseOptionalCallingConv(CC) ||
3343 ParseOptionalAttrs(RetAttrs, 1) ||
3344 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3345 ParseValID(CalleeID) ||
3346 ParseParameterList(ArgList, PFS) ||
3347 ParseOptionalAttrs(FnAttrs, 2) ||
3348 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3349 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3350 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3351 ParseTypeAndBasicBlock(UnwindBB, PFS))
3354 // If RetType is a non-function pointer type, then this is the short syntax
3355 // for the call, which means that RetType is just the return type. Infer the
3356 // rest of the function argument types from the arguments that are present.
3357 const PointerType *PFTy = 0;
3358 const FunctionType *Ty = 0;
3359 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3360 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3361 // Pull out the types of all of the arguments...
3362 std::vector<const Type*> ParamTypes;
3363 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3364 ParamTypes.push_back(ArgList[i].V->getType());
3366 if (!FunctionType::isValidReturnType(RetType))
3367 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3369 Ty = FunctionType::get(RetType, ParamTypes, false);
3370 PFTy = PointerType::getUnqual(Ty);
3373 // Look up the callee.
3375 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3377 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3378 // function attributes.
3379 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3380 if (FnAttrs & ObsoleteFuncAttrs) {
3381 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3382 FnAttrs &= ~ObsoleteFuncAttrs;
3385 // Set up the Attributes for the function.
3386 SmallVector<AttributeWithIndex, 8> Attrs;
3387 if (RetAttrs != Attribute::None)
3388 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3390 SmallVector<Value*, 8> Args;
3392 // Loop through FunctionType's arguments and ensure they are specified
3393 // correctly. Also, gather any parameter attributes.
3394 FunctionType::param_iterator I = Ty->param_begin();
3395 FunctionType::param_iterator E = Ty->param_end();
3396 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3397 const Type *ExpectedTy = 0;
3400 } else if (!Ty->isVarArg()) {
3401 return Error(ArgList[i].Loc, "too many arguments specified");
3404 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3405 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3406 ExpectedTy->getDescription() + "'");
3407 Args.push_back(ArgList[i].V);
3408 if (ArgList[i].Attrs != Attribute::None)
3409 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3413 return Error(CallLoc, "not enough parameters specified for call");
3415 if (FnAttrs != Attribute::None)
3416 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3418 // Finish off the Attributes and check them
3419 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3421 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3422 Args.begin(), Args.end());
3423 II->setCallingConv(CC);
3424 II->setAttributes(PAL);
3431 //===----------------------------------------------------------------------===//
3432 // Binary Operators.
3433 //===----------------------------------------------------------------------===//
3436 /// ::= ArithmeticOps TypeAndValue ',' Value
3438 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3439 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3440 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3441 unsigned Opc, unsigned OperandType) {
3442 LocTy Loc; Value *LHS, *RHS;
3443 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3444 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3445 ParseValue(LHS->getType(), RHS, PFS))
3449 switch (OperandType) {
3450 default: llvm_unreachable("Unknown operand type!");
3451 case 0: // int or FP.
3452 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3453 LHS->getType()->isFPOrFPVectorTy();
3455 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3456 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3460 return Error(Loc, "invalid operand type for instruction");
3462 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3467 /// ::= ArithmeticOps TypeAndValue ',' Value {
3468 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3470 LocTy Loc; Value *LHS, *RHS;
3471 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3472 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3473 ParseValue(LHS->getType(), RHS, PFS))
3476 if (!LHS->getType()->isIntOrIntVectorTy())
3477 return Error(Loc,"instruction requires integer or integer vector operands");
3479 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3485 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3486 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3487 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3489 // Parse the integer/fp comparison predicate.
3493 if (ParseCmpPredicate(Pred, Opc) ||
3494 ParseTypeAndValue(LHS, Loc, PFS) ||
3495 ParseToken(lltok::comma, "expected ',' after compare value") ||
3496 ParseValue(LHS->getType(), RHS, PFS))
3499 if (Opc == Instruction::FCmp) {
3500 if (!LHS->getType()->isFPOrFPVectorTy())
3501 return Error(Loc, "fcmp requires floating point operands");
3502 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3504 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3505 if (!LHS->getType()->isIntOrIntVectorTy() &&
3506 !LHS->getType()->isPointerTy())
3507 return Error(Loc, "icmp requires integer operands");
3508 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3513 //===----------------------------------------------------------------------===//
3514 // Other Instructions.
3515 //===----------------------------------------------------------------------===//
3519 /// ::= CastOpc TypeAndValue 'to' Type
3520 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3522 LocTy Loc; Value *Op;
3523 PATypeHolder DestTy(Type::getVoidTy(Context));
3524 if (ParseTypeAndValue(Op, Loc, PFS) ||
3525 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3529 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3530 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3531 return Error(Loc, "invalid cast opcode for cast from '" +
3532 Op->getType()->getDescription() + "' to '" +
3533 DestTy->getDescription() + "'");
3535 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3540 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3541 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3543 Value *Op0, *Op1, *Op2;
3544 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3545 ParseToken(lltok::comma, "expected ',' after select condition") ||
3546 ParseTypeAndValue(Op1, PFS) ||
3547 ParseToken(lltok::comma, "expected ',' after select value") ||
3548 ParseTypeAndValue(Op2, PFS))
3551 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3552 return Error(Loc, Reason);
3554 Inst = SelectInst::Create(Op0, Op1, Op2);
3559 /// ::= 'va_arg' TypeAndValue ',' Type
3560 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3562 PATypeHolder EltTy(Type::getVoidTy(Context));
3564 if (ParseTypeAndValue(Op, PFS) ||
3565 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3566 ParseType(EltTy, TypeLoc))
3569 if (!EltTy->isFirstClassType())
3570 return Error(TypeLoc, "va_arg requires operand with first class type");
3572 Inst = new VAArgInst(Op, EltTy);
3576 /// ParseExtractElement
3577 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3578 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3581 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3582 ParseToken(lltok::comma, "expected ',' after extract value") ||
3583 ParseTypeAndValue(Op1, PFS))
3586 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3587 return Error(Loc, "invalid extractelement operands");
3589 Inst = ExtractElementInst::Create(Op0, Op1);
3593 /// ParseInsertElement
3594 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3595 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3597 Value *Op0, *Op1, *Op2;
3598 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3599 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3600 ParseTypeAndValue(Op1, PFS) ||
3601 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3602 ParseTypeAndValue(Op2, PFS))
3605 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3606 return Error(Loc, "invalid insertelement operands");
3608 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3612 /// ParseShuffleVector
3613 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3614 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3616 Value *Op0, *Op1, *Op2;
3617 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3618 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3619 ParseTypeAndValue(Op1, PFS) ||
3620 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3621 ParseTypeAndValue(Op2, PFS))
3624 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3625 return Error(Loc, "invalid extractelement operands");
3627 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3632 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3633 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3634 PATypeHolder Ty(Type::getVoidTy(Context));
3636 LocTy TypeLoc = Lex.getLoc();
3638 if (ParseType(Ty) ||
3639 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3640 ParseValue(Ty, Op0, PFS) ||
3641 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3642 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3643 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3646 bool AteExtraComma = false;
3647 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3649 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3651 if (!EatIfPresent(lltok::comma))
3654 if (Lex.getKind() == lltok::MetadataVar) {
3655 AteExtraComma = true;
3659 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3660 ParseValue(Ty, Op0, PFS) ||
3661 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3662 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3663 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3667 if (!Ty->isFirstClassType())
3668 return Error(TypeLoc, "phi node must have first class type");
3670 PHINode *PN = PHINode::Create(Ty);
3671 PN->reserveOperandSpace(PHIVals.size());
3672 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3673 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3675 return AteExtraComma ? InstExtraComma : InstNormal;
3679 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3680 /// ParameterList OptionalAttrs
3681 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3683 unsigned RetAttrs, FnAttrs;
3685 PATypeHolder RetType(Type::getVoidTy(Context));
3688 SmallVector<ParamInfo, 16> ArgList;
3689 LocTy CallLoc = Lex.getLoc();
3691 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3692 ParseOptionalCallingConv(CC) ||
3693 ParseOptionalAttrs(RetAttrs, 1) ||
3694 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3695 ParseValID(CalleeID) ||
3696 ParseParameterList(ArgList, PFS) ||
3697 ParseOptionalAttrs(FnAttrs, 2))
3700 // If RetType is a non-function pointer type, then this is the short syntax
3701 // for the call, which means that RetType is just the return type. Infer the
3702 // rest of the function argument types from the arguments that are present.
3703 const PointerType *PFTy = 0;
3704 const FunctionType *Ty = 0;
3705 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3706 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3707 // Pull out the types of all of the arguments...
3708 std::vector<const Type*> ParamTypes;
3709 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3710 ParamTypes.push_back(ArgList[i].V->getType());
3712 if (!FunctionType::isValidReturnType(RetType))
3713 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3715 Ty = FunctionType::get(RetType, ParamTypes, false);
3716 PFTy = PointerType::getUnqual(Ty);
3719 // Look up the callee.
3721 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3723 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3724 // function attributes.
3725 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3726 if (FnAttrs & ObsoleteFuncAttrs) {
3727 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3728 FnAttrs &= ~ObsoleteFuncAttrs;
3731 // Set up the Attributes for the function.
3732 SmallVector<AttributeWithIndex, 8> Attrs;
3733 if (RetAttrs != Attribute::None)
3734 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3736 SmallVector<Value*, 8> Args;
3738 // Loop through FunctionType's arguments and ensure they are specified
3739 // correctly. Also, gather any parameter attributes.
3740 FunctionType::param_iterator I = Ty->param_begin();
3741 FunctionType::param_iterator E = Ty->param_end();
3742 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3743 const Type *ExpectedTy = 0;
3746 } else if (!Ty->isVarArg()) {
3747 return Error(ArgList[i].Loc, "too many arguments specified");
3750 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3751 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3752 ExpectedTy->getDescription() + "'");
3753 Args.push_back(ArgList[i].V);
3754 if (ArgList[i].Attrs != Attribute::None)
3755 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3759 return Error(CallLoc, "not enough parameters specified for call");
3761 if (FnAttrs != Attribute::None)
3762 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3764 // Finish off the Attributes and check them
3765 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3767 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3768 CI->setTailCall(isTail);
3769 CI->setCallingConv(CC);
3770 CI->setAttributes(PAL);
3775 //===----------------------------------------------------------------------===//
3776 // Memory Instructions.
3777 //===----------------------------------------------------------------------===//
3780 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3781 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3782 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3783 BasicBlock* BB, bool isAlloca) {
3784 PATypeHolder Ty(Type::getVoidTy(Context));
3787 unsigned Alignment = 0;
3788 if (ParseType(Ty)) return true;
3790 bool AteExtraComma = false;
3791 if (EatIfPresent(lltok::comma)) {
3792 if (Lex.getKind() == lltok::kw_align) {
3793 if (ParseOptionalAlignment(Alignment)) return true;
3794 } else if (Lex.getKind() == lltok::MetadataVar) {
3795 AteExtraComma = true;
3797 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3798 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3803 if (Size && !Size->getType()->isIntegerTy())
3804 return Error(SizeLoc, "element count must have integer type");
3807 Inst = new AllocaInst(Ty, Size, Alignment);
3808 return AteExtraComma ? InstExtraComma : InstNormal;
3811 // Autoupgrade old malloc instruction to malloc call.
3812 // FIXME: Remove in LLVM 3.0.
3813 if (Size && !Size->getType()->isIntegerTy(32))
3814 return Error(SizeLoc, "element count must be i32");
3815 const Type *IntPtrTy = Type::getInt32Ty(Context);
3816 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3817 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3819 // Prototype malloc as "void *(int32)".
3820 // This function is renamed as "malloc" in ValidateEndOfModule().
3821 MallocF = cast<Function>(
3822 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3823 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3824 return AteExtraComma ? InstExtraComma : InstNormal;
3828 /// ::= 'free' TypeAndValue
3829 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3831 Value *Val; LocTy Loc;
3832 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3833 if (!Val->getType()->isPointerTy())
3834 return Error(Loc, "operand to free must be a pointer");
3835 Inst = CallInst::CreateFree(Val, BB);
3840 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3841 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3843 Value *Val; LocTy Loc;
3844 unsigned Alignment = 0;
3845 bool AteExtraComma = false;
3846 if (ParseTypeAndValue(Val, Loc, PFS) ||
3847 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3850 if (!Val->getType()->isPointerTy() ||
3851 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3852 return Error(Loc, "load operand must be a pointer to a first class type");
3854 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3855 return AteExtraComma ? InstExtraComma : InstNormal;
3859 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3860 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3862 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3863 unsigned Alignment = 0;
3864 bool AteExtraComma = false;
3865 if (ParseTypeAndValue(Val, Loc, PFS) ||
3866 ParseToken(lltok::comma, "expected ',' after store operand") ||
3867 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3868 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3871 if (!Ptr->getType()->isPointerTy())
3872 return Error(PtrLoc, "store operand must be a pointer");
3873 if (!Val->getType()->isFirstClassType())
3874 return Error(Loc, "store operand must be a first class value");
3875 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3876 return Error(Loc, "stored value and pointer type do not match");
3878 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3879 return AteExtraComma ? InstExtraComma : InstNormal;
3883 /// ::= 'getresult' TypeAndValue ',' i32
3884 /// FIXME: Remove support for getresult in LLVM 3.0
3885 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3886 Value *Val; LocTy ValLoc, EltLoc;
3888 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3889 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3890 ParseUInt32(Element, EltLoc))
3893 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3894 return Error(ValLoc, "getresult inst requires an aggregate operand");
3895 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3896 return Error(EltLoc, "invalid getresult index for value");
3897 Inst = ExtractValueInst::Create(Val, Element);
3901 /// ParseGetElementPtr
3902 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3903 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3904 Value *Ptr, *Val; LocTy Loc, EltLoc;
3906 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3908 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3910 if (!Ptr->getType()->isPointerTy())
3911 return Error(Loc, "base of getelementptr must be a pointer");
3913 SmallVector<Value*, 16> Indices;
3914 bool AteExtraComma = false;
3915 while (EatIfPresent(lltok::comma)) {
3916 if (Lex.getKind() == lltok::MetadataVar) {
3917 AteExtraComma = true;
3920 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3921 if (!Val->getType()->isIntegerTy())
3922 return Error(EltLoc, "getelementptr index must be an integer");
3923 Indices.push_back(Val);
3926 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3927 Indices.begin(), Indices.end()))
3928 return Error(Loc, "invalid getelementptr indices");
3929 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3931 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3932 return AteExtraComma ? InstExtraComma : InstNormal;
3935 /// ParseExtractValue
3936 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3937 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3938 Value *Val; LocTy Loc;
3939 SmallVector<unsigned, 4> Indices;
3941 if (ParseTypeAndValue(Val, Loc, PFS) ||
3942 ParseIndexList(Indices, AteExtraComma))
3945 if (!Val->getType()->isAggregateType())
3946 return Error(Loc, "extractvalue operand must be aggregate type");
3948 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3950 return Error(Loc, "invalid indices for extractvalue");
3951 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3952 return AteExtraComma ? InstExtraComma : InstNormal;
3955 /// ParseInsertValue
3956 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3957 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3958 Value *Val0, *Val1; LocTy Loc0, Loc1;
3959 SmallVector<unsigned, 4> Indices;
3961 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3962 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3963 ParseTypeAndValue(Val1, Loc1, PFS) ||
3964 ParseIndexList(Indices, AteExtraComma))
3967 if (!Val0->getType()->isAggregateType())
3968 return Error(Loc0, "insertvalue operand must be aggregate type");
3970 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3972 return Error(Loc0, "invalid indices for insertvalue");
3973 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3974 return AteExtraComma ? InstExtraComma : InstNormal;
3977 //===----------------------------------------------------------------------===//
3978 // Embedded metadata.
3979 //===----------------------------------------------------------------------===//
3981 /// ParseMDNodeVector
3982 /// ::= Element (',' Element)*
3984 /// ::= 'null' | TypeAndValue
3985 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3986 PerFunctionState *PFS) {
3987 // Check for an empty list.
3988 if (Lex.getKind() == lltok::rbrace)
3992 // Null is a special case since it is typeless.
3993 if (EatIfPresent(lltok::kw_null)) {
3999 PATypeHolder Ty(Type::getVoidTy(Context));
4001 if (ParseType(Ty) || ParseValID(ID, PFS) ||
4002 ConvertValIDToValue(Ty, ID, V, PFS))
4006 } while (EatIfPresent(lltok::comma));