1 //===-- llvmAsmParser.y - Parser for llvm assembly files --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the bison parser for LLVM assembly languages files.
12 //===----------------------------------------------------------------------===//
15 #include "ParserInternals.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/InlineAsm.h"
18 #include "llvm/Instructions.h"
19 #include "llvm/Module.h"
20 #include "llvm/ValueSymbolTable.h"
21 #include "llvm/AutoUpgrade.h"
22 #include "llvm/Support/GetElementPtrTypeIterator.h"
23 #include "llvm/Support/CommandLine.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/STLExtras.h"
26 #include "llvm/Support/MathExtras.h"
27 #include "llvm/Support/Streams.h"
36 // The following is a gross hack. In order to rid the libAsmParser library of
37 // exceptions, we have to have a way of getting the yyparse function to go into
38 // an error situation. So, whenever we want an error to occur, the GenerateError
39 // function (see bottom of file) sets TriggerError. Then, at the end of each
40 // production in the grammer we use CHECK_FOR_ERROR which will invoke YYERROR
41 // (a goto) to put YACC in error state. Furthermore, several calls to
42 // GenerateError are made from inside productions and they must simulate the
43 // previous exception behavior by exiting the production immediately. We have
44 // replaced these with the GEN_ERROR macro which calls GeneratError and then
45 // immediately invokes YYERROR. This would be so much cleaner if it was a
46 // recursive descent parser.
47 static bool TriggerError = false;
48 #define CHECK_FOR_ERROR { if (TriggerError) { TriggerError = false; YYABORT; } }
49 #define GEN_ERROR(msg) { GenerateError(msg); YYERROR; }
51 int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
52 int yylex(); // declaration" of xxx warnings.
56 std::string CurFilename;
59 Debug("debug-yacc", cl::desc("Print yacc debug state changes"),
60 cl::Hidden, cl::init(false));
65 static Module *ParserResult;
67 // DEBUG_UPREFS - Define this symbol if you want to enable debugging output
68 // relating to upreferences in the input stream.
70 //#define DEBUG_UPREFS 1
72 #define UR_OUT(X) cerr << X
77 #define YYERROR_VERBOSE 1
79 static GlobalVariable *CurGV;
82 // This contains info used when building the body of a function. It is
83 // destroyed when the function is completed.
85 typedef std::vector<Value *> ValueList; // Numbered defs
88 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers=0);
90 static struct PerModuleInfo {
91 Module *CurrentModule;
92 ValueList Values; // Module level numbered definitions
93 ValueList LateResolveValues;
94 std::vector<PATypeHolder> Types;
95 std::map<ValID, PATypeHolder> LateResolveTypes;
97 /// PlaceHolderInfo - When temporary placeholder objects are created, remember
98 /// how they were referenced and on which line of the input they came from so
99 /// that we can resolve them later and print error messages as appropriate.
100 std::map<Value*, std::pair<ValID, int> > PlaceHolderInfo;
102 // GlobalRefs - This maintains a mapping between <Type, ValID>'s and forward
103 // references to global values. Global values may be referenced before they
104 // are defined, and if so, the temporary object that they represent is held
105 // here. This is used for forward references of GlobalValues.
107 typedef std::map<std::pair<const PointerType *,
108 ValID>, GlobalValue*> GlobalRefsType;
109 GlobalRefsType GlobalRefs;
112 // If we could not resolve some functions at function compilation time
113 // (calls to functions before they are defined), resolve them now... Types
114 // are resolved when the constant pool has been completely parsed.
116 ResolveDefinitions(LateResolveValues);
120 // Check to make sure that all global value forward references have been
123 if (!GlobalRefs.empty()) {
124 std::string UndefinedReferences = "Unresolved global references exist:\n";
126 for (GlobalRefsType::iterator I = GlobalRefs.begin(), E =GlobalRefs.end();
128 UndefinedReferences += " " + I->first.first->getDescription() + " " +
129 I->first.second.getName() + "\n";
131 GenerateError(UndefinedReferences);
135 // Look for intrinsic functions and CallInst that need to be upgraded
136 for (Module::iterator FI = CurrentModule->begin(),
137 FE = CurrentModule->end(); FI != FE; )
138 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
140 Values.clear(); // Clear out function local definitions
145 // GetForwardRefForGlobal - Check to see if there is a forward reference
146 // for this global. If so, remove it from the GlobalRefs map and return it.
147 // If not, just return null.
148 GlobalValue *GetForwardRefForGlobal(const PointerType *PTy, ValID ID) {
149 // Check to see if there is a forward reference to this global variable...
150 // if there is, eliminate it and patch the reference to use the new def'n.
151 GlobalRefsType::iterator I = GlobalRefs.find(std::make_pair(PTy, ID));
152 GlobalValue *Ret = 0;
153 if (I != GlobalRefs.end()) {
160 bool TypeIsUnresolved(PATypeHolder* PATy) {
161 // If it isn't abstract, its resolved
162 const Type* Ty = PATy->get();
163 if (!Ty->isAbstract())
165 // Traverse the type looking for abstract types. If it isn't abstract then
166 // we don't need to traverse that leg of the type.
167 std::vector<const Type*> WorkList, SeenList;
168 WorkList.push_back(Ty);
169 while (!WorkList.empty()) {
170 const Type* Ty = WorkList.back();
171 SeenList.push_back(Ty);
173 if (const OpaqueType* OpTy = dyn_cast<OpaqueType>(Ty)) {
174 // Check to see if this is an unresolved type
175 std::map<ValID, PATypeHolder>::iterator I = LateResolveTypes.begin();
176 std::map<ValID, PATypeHolder>::iterator E = LateResolveTypes.end();
177 for ( ; I != E; ++I) {
178 if (I->second.get() == OpTy)
181 } else if (const SequentialType* SeqTy = dyn_cast<SequentialType>(Ty)) {
182 const Type* TheTy = SeqTy->getElementType();
183 if (TheTy->isAbstract() && TheTy != Ty) {
184 std::vector<const Type*>::iterator I = SeenList.begin(),
190 WorkList.push_back(TheTy);
192 } else if (const StructType* StrTy = dyn_cast<StructType>(Ty)) {
193 for (unsigned i = 0; i < StrTy->getNumElements(); ++i) {
194 const Type* TheTy = StrTy->getElementType(i);
195 if (TheTy->isAbstract() && TheTy != Ty) {
196 std::vector<const Type*>::iterator I = SeenList.begin(),
202 WorkList.push_back(TheTy);
211 static struct PerFunctionInfo {
212 Function *CurrentFunction; // Pointer to current function being created
214 ValueList Values; // Keep track of #'d definitions
216 ValueList LateResolveValues;
217 bool isDeclare; // Is this function a forward declararation?
218 GlobalValue::LinkageTypes Linkage; // Linkage for forward declaration.
219 GlobalValue::VisibilityTypes Visibility;
221 /// BBForwardRefs - When we see forward references to basic blocks, keep
222 /// track of them here.
223 std::map<ValID, BasicBlock*> BBForwardRefs;
225 inline PerFunctionInfo() {
228 Linkage = GlobalValue::ExternalLinkage;
229 Visibility = GlobalValue::DefaultVisibility;
232 inline void FunctionStart(Function *M) {
237 void FunctionDone() {
238 // Any forward referenced blocks left?
239 if (!BBForwardRefs.empty()) {
240 GenerateError("Undefined reference to label " +
241 BBForwardRefs.begin()->second->getName());
245 // Resolve all forward references now.
246 ResolveDefinitions(LateResolveValues, &CurModule.LateResolveValues);
248 Values.clear(); // Clear out function local definitions
249 BBForwardRefs.clear();
252 Linkage = GlobalValue::ExternalLinkage;
253 Visibility = GlobalValue::DefaultVisibility;
255 } CurFun; // Info for the current function...
257 static bool inFunctionScope() { return CurFun.CurrentFunction != 0; }
260 //===----------------------------------------------------------------------===//
261 // Code to handle definitions of all the types
262 //===----------------------------------------------------------------------===//
264 static void InsertValue(Value *V, ValueList &ValueTab = CurFun.Values) {
265 // Things that have names or are void typed don't get slot numbers
266 if (V->hasName() || (V->getType() == Type::VoidTy))
269 // In the case of function values, we have to allow for the forward reference
270 // of basic blocks, which are included in the numbering. Consequently, we keep
271 // track of the next insertion location with NextValNum. When a BB gets
272 // inserted, it could change the size of the CurFun.Values vector.
273 if (&ValueTab == &CurFun.Values) {
274 if (ValueTab.size() <= CurFun.NextValNum)
275 ValueTab.resize(CurFun.NextValNum+1);
276 ValueTab[CurFun.NextValNum++] = V;
279 // For all other lists, its okay to just tack it on the back of the vector.
280 ValueTab.push_back(V);
283 static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
285 case ValID::LocalID: // Is it a numbered definition?
286 // Module constants occupy the lowest numbered slots...
287 if (D.Num < CurModule.Types.size())
288 return CurModule.Types[D.Num];
290 case ValID::LocalName: // Is it a named definition?
291 if (const Type *N = CurModule.CurrentModule->getTypeByName(D.getName())) {
292 D.destroy(); // Free old strdup'd memory...
297 GenerateError("Internal parser error: Invalid symbol type reference");
301 // If we reached here, we referenced either a symbol that we don't know about
302 // or an id number that hasn't been read yet. We may be referencing something
303 // forward, so just create an entry to be resolved later and get to it...
305 if (DoNotImprovise) return 0; // Do we just want a null to be returned?
308 if (inFunctionScope()) {
309 if (D.Type == ValID::LocalName) {
310 GenerateError("Reference to an undefined type: '" + D.getName() + "'");
313 GenerateError("Reference to an undefined type: #" + utostr(D.Num));
318 std::map<ValID, PATypeHolder>::iterator I =CurModule.LateResolveTypes.find(D);
319 if (I != CurModule.LateResolveTypes.end())
322 Type *Typ = OpaqueType::get();
323 CurModule.LateResolveTypes.insert(std::make_pair(D, Typ));
327 // getExistingVal - Look up the value specified by the provided type and
328 // the provided ValID. If the value exists and has already been defined, return
329 // it. Otherwise return null.
331 static Value *getExistingVal(const Type *Ty, const ValID &D) {
332 if (isa<FunctionType>(Ty)) {
333 GenerateError("Functions are not values and "
334 "must be referenced as pointers");
339 case ValID::LocalID: { // Is it a numbered definition?
340 // Check that the number is within bounds.
341 if (D.Num >= CurFun.Values.size())
343 Value *Result = CurFun.Values[D.Num];
344 if (Ty != Result->getType()) {
345 GenerateError("Numbered value (%" + utostr(D.Num) + ") of type '" +
346 Result->getType()->getDescription() + "' does not match "
347 "expected type, '" + Ty->getDescription() + "'");
352 case ValID::GlobalID: { // Is it a numbered definition?
353 if (D.Num >= CurModule.Values.size())
355 Value *Result = CurModule.Values[D.Num];
356 if (Ty != Result->getType()) {
357 GenerateError("Numbered value (@" + utostr(D.Num) + ") of type '" +
358 Result->getType()->getDescription() + "' does not match "
359 "expected type, '" + Ty->getDescription() + "'");
365 case ValID::LocalName: { // Is it a named definition?
366 if (!inFunctionScope())
368 ValueSymbolTable &SymTab = CurFun.CurrentFunction->getValueSymbolTable();
369 Value *N = SymTab.lookup(D.getName());
372 if (N->getType() != Ty)
375 D.destroy(); // Free old strdup'd memory...
378 case ValID::GlobalName: { // Is it a named definition?
379 ValueSymbolTable &SymTab = CurModule.CurrentModule->getValueSymbolTable();
380 Value *N = SymTab.lookup(D.getName());
383 if (N->getType() != Ty)
386 D.destroy(); // Free old strdup'd memory...
390 // Check to make sure that "Ty" is an integral type, and that our
391 // value will fit into the specified type...
392 case ValID::ConstSIntVal: // Is it a constant pool reference??
393 if (!ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
394 GenerateError("Signed integral constant '" +
395 itostr(D.ConstPool64) + "' is invalid for type '" +
396 Ty->getDescription() + "'");
399 return ConstantInt::get(Ty, D.ConstPool64, true);
401 case ValID::ConstUIntVal: // Is it an unsigned const pool reference?
402 if (!ConstantInt::isValueValidForType(Ty, D.UConstPool64)) {
403 if (!ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
404 GenerateError("Integral constant '" + utostr(D.UConstPool64) +
405 "' is invalid or out of range");
407 } else { // This is really a signed reference. Transmogrify.
408 return ConstantInt::get(Ty, D.ConstPool64, true);
411 return ConstantInt::get(Ty, D.UConstPool64);
414 case ValID::ConstFPVal: // Is it a floating point const pool reference?
415 if (!ConstantFP::isValueValidForType(Ty, *D.ConstPoolFP)) {
416 GenerateError("FP constant invalid for type");
419 // Lexer has no type info, so builds all FP constants as double.
421 if (Ty==Type::FloatTy)
422 D.ConstPoolFP->convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven);
423 return ConstantFP::get(Ty, *D.ConstPoolFP);
425 case ValID::ConstNullVal: // Is it a null value?
426 if (!isa<PointerType>(Ty)) {
427 GenerateError("Cannot create a a non pointer null");
430 return ConstantPointerNull::get(cast<PointerType>(Ty));
432 case ValID::ConstUndefVal: // Is it an undef value?
433 return UndefValue::get(Ty);
435 case ValID::ConstZeroVal: // Is it a zero value?
436 return Constant::getNullValue(Ty);
438 case ValID::ConstantVal: // Fully resolved constant?
439 if (D.ConstantValue->getType() != Ty) {
440 GenerateError("Constant expression type different from required type");
443 return D.ConstantValue;
445 case ValID::InlineAsmVal: { // Inline asm expression
446 const PointerType *PTy = dyn_cast<PointerType>(Ty);
447 const FunctionType *FTy =
448 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
449 if (!FTy || !InlineAsm::Verify(FTy, D.IAD->Constraints)) {
450 GenerateError("Invalid type for asm constraint string");
453 InlineAsm *IA = InlineAsm::get(FTy, D.IAD->AsmString, D.IAD->Constraints,
454 D.IAD->HasSideEffects);
455 D.destroy(); // Free InlineAsmDescriptor.
459 assert(0 && "Unhandled case!");
463 assert(0 && "Unhandled case!");
467 // getVal - This function is identical to getExistingVal, except that if a
468 // value is not already defined, it "improvises" by creating a placeholder var
469 // that looks and acts just like the requested variable. When the value is
470 // defined later, all uses of the placeholder variable are replaced with the
473 static Value *getVal(const Type *Ty, const ValID &ID) {
474 if (Ty == Type::LabelTy) {
475 GenerateError("Cannot use a basic block here");
479 // See if the value has already been defined.
480 Value *V = getExistingVal(Ty, ID);
482 if (TriggerError) return 0;
484 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty)) {
485 GenerateError("Invalid use of a composite type");
489 // If we reached here, we referenced either a symbol that we don't know about
490 // or an id number that hasn't been read yet. We may be referencing something
491 // forward, so just create an entry to be resolved later and get to it...
494 case ValID::GlobalName:
495 case ValID::GlobalID: {
496 const PointerType *PTy = dyn_cast<PointerType>(Ty);
498 GenerateError("Invalid type for reference to global" );
501 const Type* ElTy = PTy->getElementType();
502 if (const FunctionType *FTy = dyn_cast<FunctionType>(ElTy))
503 V = new Function(FTy, GlobalValue::ExternalLinkage);
505 V = new GlobalVariable(ElTy, false, GlobalValue::ExternalLinkage);
509 V = new Argument(Ty);
512 // Remember where this forward reference came from. FIXME, shouldn't we try
513 // to recycle these things??
514 CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
517 if (inFunctionScope())
518 InsertValue(V, CurFun.LateResolveValues);
520 InsertValue(V, CurModule.LateResolveValues);
524 /// defineBBVal - This is a definition of a new basic block with the specified
525 /// identifier which must be the same as CurFun.NextValNum, if its numeric.
526 static BasicBlock *defineBBVal(const ValID &ID) {
527 assert(inFunctionScope() && "Can't get basic block at global scope!");
531 // First, see if this was forward referenced
533 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
534 if (BBI != CurFun.BBForwardRefs.end()) {
536 // The forward declaration could have been inserted anywhere in the
537 // function: insert it into the correct place now.
538 CurFun.CurrentFunction->getBasicBlockList().remove(BB);
539 CurFun.CurrentFunction->getBasicBlockList().push_back(BB);
541 // We're about to erase the entry, save the key so we can clean it up.
542 ValID Tmp = BBI->first;
544 // Erase the forward ref from the map as its no longer "forward"
545 CurFun.BBForwardRefs.erase(ID);
547 // The key has been removed from the map but so we don't want to leave
548 // strdup'd memory around so destroy it too.
551 // If its a numbered definition, bump the number and set the BB value.
552 if (ID.Type == ValID::LocalID) {
553 assert(ID.Num == CurFun.NextValNum && "Invalid new block number");
561 // We haven't seen this BB before and its first mention is a definition.
562 // Just create it and return it.
563 std::string Name (ID.Type == ValID::LocalName ? ID.getName() : "");
564 BB = new BasicBlock(Name, CurFun.CurrentFunction);
565 if (ID.Type == ValID::LocalID) {
566 assert(ID.Num == CurFun.NextValNum && "Invalid new block number");
570 ID.destroy(); // Free strdup'd memory
574 /// getBBVal - get an existing BB value or create a forward reference for it.
576 static BasicBlock *getBBVal(const ValID &ID) {
577 assert(inFunctionScope() && "Can't get basic block at global scope!");
581 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
582 if (BBI != CurFun.BBForwardRefs.end()) {
584 } if (ID.Type == ValID::LocalName) {
585 std::string Name = ID.getName();
586 Value *N = CurFun.CurrentFunction->getValueSymbolTable().lookup(Name);
588 if (N->getType()->getTypeID() == Type::LabelTyID)
589 BB = cast<BasicBlock>(N);
591 GenerateError("Reference to label '" + Name + "' is actually of type '"+
592 N->getType()->getDescription() + "'");
593 } else if (ID.Type == ValID::LocalID) {
594 if (ID.Num < CurFun.NextValNum && ID.Num < CurFun.Values.size()) {
595 if (CurFun.Values[ID.Num]->getType()->getTypeID() == Type::LabelTyID)
596 BB = cast<BasicBlock>(CurFun.Values[ID.Num]);
598 GenerateError("Reference to label '%" + utostr(ID.Num) +
599 "' is actually of type '"+
600 CurFun.Values[ID.Num]->getType()->getDescription() + "'");
603 GenerateError("Illegal label reference " + ID.getName());
607 // If its already been defined, return it now.
609 ID.destroy(); // Free strdup'd memory.
613 // Otherwise, this block has not been seen before, create it.
615 if (ID.Type == ValID::LocalName)
617 BB = new BasicBlock(Name, CurFun.CurrentFunction);
619 // Insert it in the forward refs map.
620 CurFun.BBForwardRefs[ID] = BB;
626 //===----------------------------------------------------------------------===//
627 // Code to handle forward references in instructions
628 //===----------------------------------------------------------------------===//
630 // This code handles the late binding needed with statements that reference
631 // values not defined yet... for example, a forward branch, or the PHI node for
634 // This keeps a table (CurFun.LateResolveValues) of all such forward references
635 // and back patchs after we are done.
638 // ResolveDefinitions - If we could not resolve some defs at parsing
639 // time (forward branches, phi functions for loops, etc...) resolve the
643 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers) {
644 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
645 while (!LateResolvers.empty()) {
646 Value *V = LateResolvers.back();
647 LateResolvers.pop_back();
649 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
650 CurModule.PlaceHolderInfo.find(V);
651 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
653 ValID &DID = PHI->second.first;
655 Value *TheRealValue = getExistingVal(V->getType(), DID);
659 V->replaceAllUsesWith(TheRealValue);
661 CurModule.PlaceHolderInfo.erase(PHI);
662 } else if (FutureLateResolvers) {
663 // Functions have their unresolved items forwarded to the module late
665 InsertValue(V, *FutureLateResolvers);
667 if (DID.Type == ValID::LocalName || DID.Type == ValID::GlobalName) {
668 GenerateError("Reference to an invalid definition: '" +DID.getName()+
669 "' of type '" + V->getType()->getDescription() + "'",
673 GenerateError("Reference to an invalid definition: #" +
674 itostr(DID.Num) + " of type '" +
675 V->getType()->getDescription() + "'",
681 LateResolvers.clear();
684 // ResolveTypeTo - A brand new type was just declared. This means that (if
685 // name is not null) things referencing Name can be resolved. Otherwise, things
686 // refering to the number can be resolved. Do this now.
688 static void ResolveTypeTo(std::string *Name, const Type *ToTy) {
691 D = ValID::createLocalName(*Name);
693 D = ValID::createLocalID(CurModule.Types.size());
695 std::map<ValID, PATypeHolder>::iterator I =
696 CurModule.LateResolveTypes.find(D);
697 if (I != CurModule.LateResolveTypes.end()) {
698 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
699 CurModule.LateResolveTypes.erase(I);
703 // setValueName - Set the specified value to the name given. The name may be
704 // null potentially, in which case this is a noop. The string passed in is
705 // assumed to be a malloc'd string buffer, and is free'd by this function.
707 static void setValueName(Value *V, std::string *NameStr) {
708 if (!NameStr) return;
709 std::string Name(*NameStr); // Copy string
710 delete NameStr; // Free old string
712 if (V->getType() == Type::VoidTy) {
713 GenerateError("Can't assign name '" + Name+"' to value with void type");
717 assert(inFunctionScope() && "Must be in function scope!");
718 ValueSymbolTable &ST = CurFun.CurrentFunction->getValueSymbolTable();
719 if (ST.lookup(Name)) {
720 GenerateError("Redefinition of value '" + Name + "' of type '" +
721 V->getType()->getDescription() + "'");
729 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
730 /// this is a declaration, otherwise it is a definition.
731 static GlobalVariable *
732 ParseGlobalVariable(std::string *NameStr,
733 GlobalValue::LinkageTypes Linkage,
734 GlobalValue::VisibilityTypes Visibility,
735 bool isConstantGlobal, const Type *Ty,
736 Constant *Initializer, bool IsThreadLocal) {
737 if (isa<FunctionType>(Ty)) {
738 GenerateError("Cannot declare global vars of function type");
742 const PointerType *PTy = PointerType::get(Ty);
746 Name = *NameStr; // Copy string
747 delete NameStr; // Free old string
750 // See if this global value was forward referenced. If so, recycle the
754 ID = ValID::createGlobalName(Name);
756 ID = ValID::createGlobalID(CurModule.Values.size());
759 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
760 // Move the global to the end of the list, from whereever it was
761 // previously inserted.
762 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
763 CurModule.CurrentModule->getGlobalList().remove(GV);
764 CurModule.CurrentModule->getGlobalList().push_back(GV);
765 GV->setInitializer(Initializer);
766 GV->setLinkage(Linkage);
767 GV->setVisibility(Visibility);
768 GV->setConstant(isConstantGlobal);
769 GV->setThreadLocal(IsThreadLocal);
770 InsertValue(GV, CurModule.Values);
774 // If this global has a name
776 // if the global we're parsing has an initializer (is a definition) and
777 // has external linkage.
778 if (Initializer && Linkage != GlobalValue::InternalLinkage)
779 // If there is already a global with external linkage with this name
780 if (CurModule.CurrentModule->getGlobalVariable(Name, false)) {
781 // If we allow this GVar to get created, it will be renamed in the
782 // symbol table because it conflicts with an existing GVar. We can't
783 // allow redefinition of GVars whose linking indicates that their name
784 // must stay the same. Issue the error.
785 GenerateError("Redefinition of global variable named '" + Name +
786 "' of type '" + Ty->getDescription() + "'");
791 // Otherwise there is no existing GV to use, create one now.
793 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
794 CurModule.CurrentModule, IsThreadLocal);
795 GV->setVisibility(Visibility);
796 InsertValue(GV, CurModule.Values);
800 // setTypeName - Set the specified type to the name given. The name may be
801 // null potentially, in which case this is a noop. The string passed in is
802 // assumed to be a malloc'd string buffer, and is freed by this function.
804 // This function returns true if the type has already been defined, but is
805 // allowed to be redefined in the specified context. If the name is a new name
806 // for the type plane, it is inserted and false is returned.
807 static bool setTypeName(const Type *T, std::string *NameStr) {
808 assert(!inFunctionScope() && "Can't give types function-local names!");
809 if (NameStr == 0) return false;
811 std::string Name(*NameStr); // Copy string
812 delete NameStr; // Free old string
814 // We don't allow assigning names to void type
815 if (T == Type::VoidTy) {
816 GenerateError("Can't assign name '" + Name + "' to the void type");
820 // Set the type name, checking for conflicts as we do so.
821 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
823 if (AlreadyExists) { // Inserting a name that is already defined???
824 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
825 assert(Existing && "Conflict but no matching type?!");
827 // There is only one case where this is allowed: when we are refining an
828 // opaque type. In this case, Existing will be an opaque type.
829 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
830 // We ARE replacing an opaque type!
831 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
835 // Otherwise, this is an attempt to redefine a type. That's okay if
836 // the redefinition is identical to the original. This will be so if
837 // Existing and T point to the same Type object. In this one case we
838 // allow the equivalent redefinition.
839 if (Existing == T) return true; // Yes, it's equal.
841 // Any other kind of (non-equivalent) redefinition is an error.
842 GenerateError("Redefinition of type named '" + Name + "' of type '" +
843 T->getDescription() + "'");
849 //===----------------------------------------------------------------------===//
850 // Code for handling upreferences in type names...
853 // TypeContains - Returns true if Ty directly contains E in it.
855 static bool TypeContains(const Type *Ty, const Type *E) {
856 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
857 E) != Ty->subtype_end();
862 // NestingLevel - The number of nesting levels that need to be popped before
863 // this type is resolved.
864 unsigned NestingLevel;
866 // LastContainedTy - This is the type at the current binding level for the
867 // type. Every time we reduce the nesting level, this gets updated.
868 const Type *LastContainedTy;
870 // UpRefTy - This is the actual opaque type that the upreference is
874 UpRefRecord(unsigned NL, OpaqueType *URTy)
875 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
879 // UpRefs - A list of the outstanding upreferences that need to be resolved.
880 static std::vector<UpRefRecord> UpRefs;
882 /// HandleUpRefs - Every time we finish a new layer of types, this function is
883 /// called. It loops through the UpRefs vector, which is a list of the
884 /// currently active types. For each type, if the up reference is contained in
885 /// the newly completed type, we decrement the level count. When the level
886 /// count reaches zero, the upreferenced type is the type that is passed in:
887 /// thus we can complete the cycle.
889 static PATypeHolder HandleUpRefs(const Type *ty) {
890 // If Ty isn't abstract, or if there are no up-references in it, then there is
891 // nothing to resolve here.
892 if (!ty->isAbstract() || UpRefs.empty()) return ty;
895 UR_OUT("Type '" << Ty->getDescription() <<
896 "' newly formed. Resolving upreferences.\n" <<
897 UpRefs.size() << " upreferences active!\n");
899 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
900 // to zero), we resolve them all together before we resolve them to Ty. At
901 // the end of the loop, if there is anything to resolve to Ty, it will be in
903 OpaqueType *TypeToResolve = 0;
905 for (unsigned i = 0; i != UpRefs.size(); ++i) {
906 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
907 << UpRefs[i].second->getDescription() << ") = "
908 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
909 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
910 // Decrement level of upreference
911 unsigned Level = --UpRefs[i].NestingLevel;
912 UpRefs[i].LastContainedTy = Ty;
913 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
914 if (Level == 0) { // Upreference should be resolved!
915 if (!TypeToResolve) {
916 TypeToResolve = UpRefs[i].UpRefTy;
918 UR_OUT(" * Resolving upreference for "
919 << UpRefs[i].second->getDescription() << "\n";
920 std::string OldName = UpRefs[i].UpRefTy->getDescription());
921 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
922 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
923 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
925 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
926 --i; // Do not skip the next element...
932 UR_OUT(" * Resolving upreference for "
933 << UpRefs[i].second->getDescription() << "\n";
934 std::string OldName = TypeToResolve->getDescription());
935 TypeToResolve->refineAbstractTypeTo(Ty);
941 //===----------------------------------------------------------------------===//
942 // RunVMAsmParser - Define an interface to this parser
943 //===----------------------------------------------------------------------===//
945 static Module* RunParser(Module * M);
947 Module *llvm::RunVMAsmParser(const std::string &Filename, FILE *F) {
950 CurFilename = Filename;
951 return RunParser(new Module(CurFilename));
954 Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
955 set_scan_string(AsmString);
957 CurFilename = "from_memory";
959 return RunParser(new Module (CurFilename));
968 llvm::Module *ModuleVal;
969 llvm::Function *FunctionVal;
970 llvm::BasicBlock *BasicBlockVal;
971 llvm::TerminatorInst *TermInstVal;
972 llvm::Instruction *InstVal;
973 llvm::Constant *ConstVal;
975 const llvm::Type *PrimType;
976 std::list<llvm::PATypeHolder> *TypeList;
977 llvm::PATypeHolder *TypeVal;
978 llvm::Value *ValueVal;
979 std::vector<llvm::Value*> *ValueList;
980 llvm::ArgListType *ArgList;
981 llvm::TypeWithAttrs TypeWithAttrs;
982 llvm::TypeWithAttrsList *TypeWithAttrsList;
983 llvm::ValueRefList *ValueRefList;
985 // Represent the RHS of PHI node
986 std::list<std::pair<llvm::Value*,
987 llvm::BasicBlock*> > *PHIList;
988 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
989 std::vector<llvm::Constant*> *ConstVector;
991 llvm::GlobalValue::LinkageTypes Linkage;
992 llvm::GlobalValue::VisibilityTypes Visibility;
994 llvm::APInt *APIntVal;
999 llvm::APFloat *FPVal;
1002 std::string *StrVal; // This memory must be deleted
1003 llvm::ValID ValIDVal;
1005 llvm::Instruction::BinaryOps BinaryOpVal;
1006 llvm::Instruction::TermOps TermOpVal;
1007 llvm::Instruction::MemoryOps MemOpVal;
1008 llvm::Instruction::CastOps CastOpVal;
1009 llvm::Instruction::OtherOps OtherOpVal;
1010 llvm::ICmpInst::Predicate IPredicate;
1011 llvm::FCmpInst::Predicate FPredicate;
1014 %type <ModuleVal> Module
1015 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
1016 %type <BasicBlockVal> BasicBlock InstructionList
1017 %type <TermInstVal> BBTerminatorInst
1018 %type <InstVal> Inst InstVal MemoryInst
1019 %type <ConstVal> ConstVal ConstExpr AliaseeRef
1020 %type <ConstVector> ConstVector
1021 %type <ArgList> ArgList ArgListH
1022 %type <PHIList> PHIList
1023 %type <ValueRefList> ValueRefList // For call param lists & GEP indices
1024 %type <ValueList> IndexList // For GEP indices
1025 %type <TypeList> TypeListI
1026 %type <TypeWithAttrsList> ArgTypeList ArgTypeListI
1027 %type <TypeWithAttrs> ArgType
1028 %type <JumpTable> JumpTable
1029 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
1030 %type <BoolVal> ThreadLocal // 'thread_local' or not
1031 %type <BoolVal> OptVolatile // 'volatile' or not
1032 %type <BoolVal> OptTailCall // TAIL CALL or plain CALL.
1033 %type <BoolVal> OptSideEffect // 'sideeffect' or not.
1034 %type <Linkage> GVInternalLinkage GVExternalLinkage
1035 %type <Linkage> FunctionDefineLinkage FunctionDeclareLinkage
1036 %type <Linkage> AliasLinkage
1037 %type <Visibility> GVVisibilityStyle
1039 // ValueRef - Unresolved reference to a definition or BB
1040 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
1041 %type <ValueVal> ResolvedVal // <type> <valref> pair
1042 // Tokens and types for handling constant integer values
1044 // ESINT64VAL - A negative number within long long range
1045 %token <SInt64Val> ESINT64VAL
1047 // EUINT64VAL - A positive number within uns. long long range
1048 %token <UInt64Val> EUINT64VAL
1050 // ESAPINTVAL - A negative number with arbitrary precision
1051 %token <APIntVal> ESAPINTVAL
1053 // EUAPINTVAL - A positive number with arbitrary precision
1054 %token <APIntVal> EUAPINTVAL
1056 %token <UIntVal> LOCALVAL_ID GLOBALVAL_ID // %123 @123
1057 %token <FPVal> FPVAL // Float or Double constant
1059 // Built in types...
1060 %type <TypeVal> Types ResultTypes
1061 %type <PrimType> IntType FPType PrimType // Classifications
1062 %token <PrimType> VOID INTTYPE
1063 %token <PrimType> FLOAT DOUBLE X86_FP80 FP128 PPC_FP128 LABEL
1067 %token<StrVal> LOCALVAR GLOBALVAR LABELSTR
1068 %token<StrVal> STRINGCONSTANT ATSTRINGCONSTANT PCTSTRINGCONSTANT
1069 %type <StrVal> LocalName OptLocalName OptLocalAssign
1070 %type <StrVal> GlobalName OptGlobalAssign GlobalAssign
1071 %type <StrVal> OptSection SectionString
1073 %type <UIntVal> OptAlign OptCAlign
1075 %token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
1076 %token DECLARE DEFINE GLOBAL CONSTANT SECTION ALIAS VOLATILE THREAD_LOCAL
1077 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
1078 %token DLLIMPORT DLLEXPORT EXTERN_WEAK
1079 %token OPAQUE EXTERNAL TARGET TRIPLE ALIGN
1080 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
1081 %token CC_TOK CCC_TOK FASTCC_TOK COLDCC_TOK X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
1083 %type <UIntVal> OptCallingConv
1084 %type <ParamAttrs> OptParamAttrs ParamAttr
1085 %type <ParamAttrs> OptFuncAttrs FuncAttr
1087 // Basic Block Terminating Operators
1088 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
1091 %type <BinaryOpVal> ArithmeticOps LogicalOps // Binops Subcatagories
1092 %token <BinaryOpVal> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
1093 %token <BinaryOpVal> SHL LSHR ASHR
1095 %token <OtherOpVal> ICMP FCMP
1096 %type <IPredicate> IPredicates
1097 %type <FPredicate> FPredicates
1098 %token EQ NE SLT SGT SLE SGE ULT UGT ULE UGE
1099 %token OEQ ONE OLT OGT OLE OGE ORD UNO UEQ UNE
1101 // Memory Instructions
1102 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
1105 %type <CastOpVal> CastOps
1106 %token <CastOpVal> TRUNC ZEXT SEXT FPTRUNC FPEXT BITCAST
1107 %token <CastOpVal> UITOFP SITOFP FPTOUI FPTOSI INTTOPTR PTRTOINT
1110 %token <OtherOpVal> PHI_TOK SELECT VAARG
1111 %token <OtherOpVal> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
1113 // Function Attributes
1114 %token SIGNEXT ZEROEXT NORETURN INREG SRET NOUNWIND NOALIAS BYVAL NEST
1116 // Visibility Styles
1117 %token DEFAULT HIDDEN PROTECTED
1123 // Operations that are notably excluded from this list include:
1124 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
1126 ArithmeticOps: ADD | SUB | MUL | UDIV | SDIV | FDIV | UREM | SREM | FREM;
1127 LogicalOps : SHL | LSHR | ASHR | AND | OR | XOR;
1128 CastOps : TRUNC | ZEXT | SEXT | FPTRUNC | FPEXT | BITCAST |
1129 UITOFP | SITOFP | FPTOUI | FPTOSI | INTTOPTR | PTRTOINT;
1132 : EQ { $$ = ICmpInst::ICMP_EQ; } | NE { $$ = ICmpInst::ICMP_NE; }
1133 | SLT { $$ = ICmpInst::ICMP_SLT; } | SGT { $$ = ICmpInst::ICMP_SGT; }
1134 | SLE { $$ = ICmpInst::ICMP_SLE; } | SGE { $$ = ICmpInst::ICMP_SGE; }
1135 | ULT { $$ = ICmpInst::ICMP_ULT; } | UGT { $$ = ICmpInst::ICMP_UGT; }
1136 | ULE { $$ = ICmpInst::ICMP_ULE; } | UGE { $$ = ICmpInst::ICMP_UGE; }
1140 : OEQ { $$ = FCmpInst::FCMP_OEQ; } | ONE { $$ = FCmpInst::FCMP_ONE; }
1141 | OLT { $$ = FCmpInst::FCMP_OLT; } | OGT { $$ = FCmpInst::FCMP_OGT; }
1142 | OLE { $$ = FCmpInst::FCMP_OLE; } | OGE { $$ = FCmpInst::FCMP_OGE; }
1143 | ORD { $$ = FCmpInst::FCMP_ORD; } | UNO { $$ = FCmpInst::FCMP_UNO; }
1144 | UEQ { $$ = FCmpInst::FCMP_UEQ; } | UNE { $$ = FCmpInst::FCMP_UNE; }
1145 | ULT { $$ = FCmpInst::FCMP_ULT; } | UGT { $$ = FCmpInst::FCMP_UGT; }
1146 | ULE { $$ = FCmpInst::FCMP_ULE; } | UGE { $$ = FCmpInst::FCMP_UGE; }
1147 | TRUETOK { $$ = FCmpInst::FCMP_TRUE; }
1148 | FALSETOK { $$ = FCmpInst::FCMP_FALSE; }
1151 // These are some types that allow classification if we only want a particular
1152 // thing... for example, only a signed, unsigned, or integral type.
1154 FPType : FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80;
1156 LocalName : LOCALVAR | STRINGCONSTANT | PCTSTRINGCONSTANT ;
1157 OptLocalName : LocalName | /*empty*/ { $$ = 0; };
1159 /// OptLocalAssign - Value producing statements have an optional assignment
1161 OptLocalAssign : LocalName '=' {
1170 GlobalName : GLOBALVAR | ATSTRINGCONSTANT ;
1172 OptGlobalAssign : GlobalAssign
1178 GlobalAssign : GlobalName '=' {
1184 : INTERNAL { $$ = GlobalValue::InternalLinkage; }
1185 | WEAK { $$ = GlobalValue::WeakLinkage; }
1186 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1187 | APPENDING { $$ = GlobalValue::AppendingLinkage; }
1188 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1192 : DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1193 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1194 | EXTERNAL { $$ = GlobalValue::ExternalLinkage; }
1198 : /*empty*/ { $$ = GlobalValue::DefaultVisibility; }
1199 | DEFAULT { $$ = GlobalValue::DefaultVisibility; }
1200 | HIDDEN { $$ = GlobalValue::HiddenVisibility; }
1201 | PROTECTED { $$ = GlobalValue::ProtectedVisibility; }
1204 FunctionDeclareLinkage
1205 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1206 | DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1207 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1210 FunctionDefineLinkage
1211 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1212 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1213 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1214 | WEAK { $$ = GlobalValue::WeakLinkage; }
1215 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1219 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1220 | WEAK { $$ = GlobalValue::WeakLinkage; }
1221 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1224 OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
1225 CCC_TOK { $$ = CallingConv::C; } |
1226 FASTCC_TOK { $$ = CallingConv::Fast; } |
1227 COLDCC_TOK { $$ = CallingConv::Cold; } |
1228 X86_STDCALLCC_TOK { $$ = CallingConv::X86_StdCall; } |
1229 X86_FASTCALLCC_TOK { $$ = CallingConv::X86_FastCall; } |
1231 if ((unsigned)$2 != $2)
1232 GEN_ERROR("Calling conv too large");
1237 ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; }
1238 | ZEXT { $$ = ParamAttr::ZExt; }
1239 | SIGNEXT { $$ = ParamAttr::SExt; }
1240 | SEXT { $$ = ParamAttr::SExt; }
1241 | INREG { $$ = ParamAttr::InReg; }
1242 | SRET { $$ = ParamAttr::StructRet; }
1243 | NOALIAS { $$ = ParamAttr::NoAlias; }
1244 | BYVAL { $$ = ParamAttr::ByVal; }
1245 | NEST { $$ = ParamAttr::Nest; }
1248 OptParamAttrs : /* empty */ { $$ = ParamAttr::None; }
1249 | OptParamAttrs ParamAttr {
1254 FuncAttr : NORETURN { $$ = ParamAttr::NoReturn; }
1255 | NOUNWIND { $$ = ParamAttr::NoUnwind; }
1256 | ZEROEXT { $$ = ParamAttr::ZExt; }
1257 | SIGNEXT { $$ = ParamAttr::SExt; }
1260 OptFuncAttrs : /* empty */ { $$ = ParamAttr::None; }
1261 | OptFuncAttrs FuncAttr {
1266 // OptAlign/OptCAlign - An optional alignment, and an optional alignment with
1267 // a comma before it.
1268 OptAlign : /*empty*/ { $$ = 0; } |
1271 if ($$ != 0 && !isPowerOf2_32($$))
1272 GEN_ERROR("Alignment must be a power of two");
1275 OptCAlign : /*empty*/ { $$ = 0; } |
1276 ',' ALIGN EUINT64VAL {
1278 if ($$ != 0 && !isPowerOf2_32($$))
1279 GEN_ERROR("Alignment must be a power of two");
1284 SectionString : SECTION STRINGCONSTANT {
1285 for (unsigned i = 0, e = $2->length(); i != e; ++i)
1286 if ((*$2)[i] == '"' || (*$2)[i] == '\\')
1287 GEN_ERROR("Invalid character in section name");
1292 OptSection : /*empty*/ { $$ = 0; } |
1293 SectionString { $$ = $1; };
1295 // GlobalVarAttributes - Used to pass the attributes string on a global. CurGV
1296 // is set to be the global we are processing.
1298 GlobalVarAttributes : /* empty */ {} |
1299 ',' GlobalVarAttribute GlobalVarAttributes {};
1300 GlobalVarAttribute : SectionString {
1301 CurGV->setSection(*$1);
1305 | ALIGN EUINT64VAL {
1306 if ($2 != 0 && !isPowerOf2_32($2))
1307 GEN_ERROR("Alignment must be a power of two");
1308 CurGV->setAlignment($2);
1312 //===----------------------------------------------------------------------===//
1313 // Types includes all predefined types... except void, because it can only be
1314 // used in specific contexts (function returning void for example).
1316 // Derived types are added later...
1318 PrimType : INTTYPE | FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80 | LABEL ;
1322 $$ = new PATypeHolder(OpaqueType::get());
1326 $$ = new PATypeHolder($1);
1329 | Types '*' { // Pointer type?
1330 if (*$1 == Type::LabelTy)
1331 GEN_ERROR("Cannot form a pointer to a basic block");
1332 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1)));
1336 | SymbolicValueRef { // Named types are also simple types...
1337 const Type* tmp = getTypeVal($1);
1339 $$ = new PATypeHolder(tmp);
1341 | '\\' EUINT64VAL { // Type UpReference
1342 if ($2 > (uint64_t)~0U) GEN_ERROR("Value out of range");
1343 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1344 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1345 $$ = new PATypeHolder(OT);
1346 UR_OUT("New Upreference!\n");
1349 | Types '(' ArgTypeListI ')' OptFuncAttrs {
1350 std::vector<const Type*> Params;
1351 ParamAttrsVector Attrs;
1352 if ($5 != ParamAttr::None) {
1353 ParamAttrsWithIndex X; X.index = 0; X.attrs = $5;
1357 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1358 for (; I != E; ++I, ++index) {
1359 const Type *Ty = I->Ty->get();
1360 Params.push_back(Ty);
1361 if (Ty != Type::VoidTy)
1362 if (I->Attrs != ParamAttr::None) {
1363 ParamAttrsWithIndex X; X.index = index; X.attrs = I->Attrs;
1367 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1368 if (isVarArg) Params.pop_back();
1370 ParamAttrsList *ActualAttrs = 0;
1372 ActualAttrs = ParamAttrsList::get(Attrs);
1373 FunctionType *FT = FunctionType::get(*$1, Params, isVarArg, ActualAttrs);
1374 delete $3; // Delete the argument list
1375 delete $1; // Delete the return type handle
1376 $$ = new PATypeHolder(HandleUpRefs(FT));
1379 | VOID '(' ArgTypeListI ')' OptFuncAttrs {
1380 std::vector<const Type*> Params;
1381 ParamAttrsVector Attrs;
1382 if ($5 != ParamAttr::None) {
1383 ParamAttrsWithIndex X; X.index = 0; X.attrs = $5;
1386 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1388 for ( ; I != E; ++I, ++index) {
1389 const Type* Ty = I->Ty->get();
1390 Params.push_back(Ty);
1391 if (Ty != Type::VoidTy)
1392 if (I->Attrs != ParamAttr::None) {
1393 ParamAttrsWithIndex X; X.index = index; X.attrs = I->Attrs;
1397 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1398 if (isVarArg) Params.pop_back();
1400 ParamAttrsList *ActualAttrs = 0;
1402 ActualAttrs = ParamAttrsList::get(Attrs);
1404 FunctionType *FT = FunctionType::get($1, Params, isVarArg, ActualAttrs);
1405 delete $3; // Delete the argument list
1406 $$ = new PATypeHolder(HandleUpRefs(FT));
1410 | '[' EUINT64VAL 'x' Types ']' { // Sized array type?
1411 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1415 | '<' EUINT64VAL 'x' Types '>' { // Vector type?
1416 const llvm::Type* ElemTy = $4->get();
1417 if ((unsigned)$2 != $2)
1418 GEN_ERROR("Unsigned result not equal to signed result");
1419 if (!ElemTy->isFloatingPoint() && !ElemTy->isInteger())
1420 GEN_ERROR("Element type of a VectorType must be primitive");
1421 if (!isPowerOf2_32($2))
1422 GEN_ERROR("Vector length should be a power of 2");
1423 $$ = new PATypeHolder(HandleUpRefs(VectorType::get(*$4, (unsigned)$2)));
1427 | '{' TypeListI '}' { // Structure type?
1428 std::vector<const Type*> Elements;
1429 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1430 E = $2->end(); I != E; ++I)
1431 Elements.push_back(*I);
1433 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1437 | '{' '}' { // Empty structure type?
1438 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1441 | '<' '{' TypeListI '}' '>' {
1442 std::vector<const Type*> Elements;
1443 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1444 E = $3->end(); I != E; ++I)
1445 Elements.push_back(*I);
1447 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements, true)));
1451 | '<' '{' '}' '>' { // Empty structure type?
1452 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>(), true));
1458 : Types OptParamAttrs {
1466 if (!UpRefs.empty())
1467 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1468 if (!(*$1)->isFirstClassType())
1469 GEN_ERROR("LLVM functions cannot return aggregate types");
1473 $$ = new PATypeHolder(Type::VoidTy);
1477 ArgTypeList : ArgType {
1478 $$ = new TypeWithAttrsList();
1482 | ArgTypeList ',' ArgType {
1483 ($$=$1)->push_back($3);
1490 | ArgTypeList ',' DOTDOTDOT {
1492 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1493 TWA.Ty = new PATypeHolder(Type::VoidTy);
1498 $$ = new TypeWithAttrsList;
1499 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1500 TWA.Ty = new PATypeHolder(Type::VoidTy);
1505 $$ = new TypeWithAttrsList();
1509 // TypeList - Used for struct declarations and as a basis for function type
1510 // declaration type lists
1513 $$ = new std::list<PATypeHolder>();
1518 | TypeListI ',' Types {
1519 ($$=$1)->push_back(*$3);
1524 // ConstVal - The various declarations that go into the constant pool. This
1525 // production is used ONLY to represent constants that show up AFTER a 'const',
1526 // 'constant' or 'global' token at global scope. Constants that can be inlined
1527 // into other expressions (such as integers and constexprs) are handled by the
1528 // ResolvedVal, ValueRef and ConstValueRef productions.
1530 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1531 if (!UpRefs.empty())
1532 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1533 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1535 GEN_ERROR("Cannot make array constant with type: '" +
1536 (*$1)->getDescription() + "'");
1537 const Type *ETy = ATy->getElementType();
1538 int NumElements = ATy->getNumElements();
1540 // Verify that we have the correct size...
1541 if (NumElements != -1 && NumElements != (int)$3->size())
1542 GEN_ERROR("Type mismatch: constant sized array initialized with " +
1543 utostr($3->size()) + " arguments, but has size of " +
1544 itostr(NumElements) + "");
1546 // Verify all elements are correct type!
1547 for (unsigned i = 0; i < $3->size(); i++) {
1548 if (ETy != (*$3)[i]->getType())
1549 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1550 ETy->getDescription() +"' as required!\nIt is of type '"+
1551 (*$3)[i]->getType()->getDescription() + "'.");
1554 $$ = ConstantArray::get(ATy, *$3);
1555 delete $1; delete $3;
1559 if (!UpRefs.empty())
1560 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1561 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1563 GEN_ERROR("Cannot make array constant with type: '" +
1564 (*$1)->getDescription() + "'");
1566 int NumElements = ATy->getNumElements();
1567 if (NumElements != -1 && NumElements != 0)
1568 GEN_ERROR("Type mismatch: constant sized array initialized with 0"
1569 " arguments, but has size of " + itostr(NumElements) +"");
1570 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1574 | Types 'c' STRINGCONSTANT {
1575 if (!UpRefs.empty())
1576 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1577 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1579 GEN_ERROR("Cannot make array constant with type: '" +
1580 (*$1)->getDescription() + "'");
1582 int NumElements = ATy->getNumElements();
1583 const Type *ETy = ATy->getElementType();
1584 if (NumElements != -1 && NumElements != int($3->length()))
1585 GEN_ERROR("Can't build string constant of size " +
1586 itostr((int)($3->length())) +
1587 " when array has size " + itostr(NumElements) + "");
1588 std::vector<Constant*> Vals;
1589 if (ETy == Type::Int8Ty) {
1590 for (unsigned i = 0; i < $3->length(); ++i)
1591 Vals.push_back(ConstantInt::get(ETy, (*$3)[i]));
1594 GEN_ERROR("Cannot build string arrays of non byte sized elements");
1597 $$ = ConstantArray::get(ATy, Vals);
1601 | Types '<' ConstVector '>' { // Nonempty unsized arr
1602 if (!UpRefs.empty())
1603 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1604 const VectorType *PTy = dyn_cast<VectorType>($1->get());
1606 GEN_ERROR("Cannot make packed constant with type: '" +
1607 (*$1)->getDescription() + "'");
1608 const Type *ETy = PTy->getElementType();
1609 int NumElements = PTy->getNumElements();
1611 // Verify that we have the correct size...
1612 if (NumElements != -1 && NumElements != (int)$3->size())
1613 GEN_ERROR("Type mismatch: constant sized packed initialized with " +
1614 utostr($3->size()) + " arguments, but has size of " +
1615 itostr(NumElements) + "");
1617 // Verify all elements are correct type!
1618 for (unsigned i = 0; i < $3->size(); i++) {
1619 if (ETy != (*$3)[i]->getType())
1620 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1621 ETy->getDescription() +"' as required!\nIt is of type '"+
1622 (*$3)[i]->getType()->getDescription() + "'.");
1625 $$ = ConstantVector::get(PTy, *$3);
1626 delete $1; delete $3;
1629 | Types '{' ConstVector '}' {
1630 const StructType *STy = dyn_cast<StructType>($1->get());
1632 GEN_ERROR("Cannot make struct constant with type: '" +
1633 (*$1)->getDescription() + "'");
1635 if ($3->size() != STy->getNumContainedTypes())
1636 GEN_ERROR("Illegal number of initializers for structure type");
1638 // Check to ensure that constants are compatible with the type initializer!
1639 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1640 if ((*$3)[i]->getType() != STy->getElementType(i))
1641 GEN_ERROR("Expected type '" +
1642 STy->getElementType(i)->getDescription() +
1643 "' for element #" + utostr(i) +
1644 " of structure initializer");
1646 // Check to ensure that Type is not packed
1647 if (STy->isPacked())
1648 GEN_ERROR("Unpacked Initializer to vector type '" +
1649 STy->getDescription() + "'");
1651 $$ = ConstantStruct::get(STy, *$3);
1652 delete $1; delete $3;
1656 if (!UpRefs.empty())
1657 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1658 const StructType *STy = dyn_cast<StructType>($1->get());
1660 GEN_ERROR("Cannot make struct constant with type: '" +
1661 (*$1)->getDescription() + "'");
1663 if (STy->getNumContainedTypes() != 0)
1664 GEN_ERROR("Illegal number of initializers for structure type");
1666 // Check to ensure that Type is not packed
1667 if (STy->isPacked())
1668 GEN_ERROR("Unpacked Initializer to vector type '" +
1669 STy->getDescription() + "'");
1671 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1675 | Types '<' '{' ConstVector '}' '>' {
1676 const StructType *STy = dyn_cast<StructType>($1->get());
1678 GEN_ERROR("Cannot make struct constant with type: '" +
1679 (*$1)->getDescription() + "'");
1681 if ($4->size() != STy->getNumContainedTypes())
1682 GEN_ERROR("Illegal number of initializers for structure type");
1684 // Check to ensure that constants are compatible with the type initializer!
1685 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1686 if ((*$4)[i]->getType() != STy->getElementType(i))
1687 GEN_ERROR("Expected type '" +
1688 STy->getElementType(i)->getDescription() +
1689 "' for element #" + utostr(i) +
1690 " of structure initializer");
1692 // Check to ensure that Type is packed
1693 if (!STy->isPacked())
1694 GEN_ERROR("Vector initializer to non-vector type '" +
1695 STy->getDescription() + "'");
1697 $$ = ConstantStruct::get(STy, *$4);
1698 delete $1; delete $4;
1701 | Types '<' '{' '}' '>' {
1702 if (!UpRefs.empty())
1703 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1704 const StructType *STy = dyn_cast<StructType>($1->get());
1706 GEN_ERROR("Cannot make struct constant with type: '" +
1707 (*$1)->getDescription() + "'");
1709 if (STy->getNumContainedTypes() != 0)
1710 GEN_ERROR("Illegal number of initializers for structure type");
1712 // Check to ensure that Type is packed
1713 if (!STy->isPacked())
1714 GEN_ERROR("Vector initializer to non-vector type '" +
1715 STy->getDescription() + "'");
1717 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1722 if (!UpRefs.empty())
1723 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1724 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1726 GEN_ERROR("Cannot make null pointer constant with type: '" +
1727 (*$1)->getDescription() + "'");
1729 $$ = ConstantPointerNull::get(PTy);
1734 if (!UpRefs.empty())
1735 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1736 $$ = UndefValue::get($1->get());
1740 | Types SymbolicValueRef {
1741 if (!UpRefs.empty())
1742 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1743 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1745 GEN_ERROR("Global const reference must be a pointer type");
1747 // ConstExprs can exist in the body of a function, thus creating
1748 // GlobalValues whenever they refer to a variable. Because we are in
1749 // the context of a function, getExistingVal will search the functions
1750 // symbol table instead of the module symbol table for the global symbol,
1751 // which throws things all off. To get around this, we just tell
1752 // getExistingVal that we are at global scope here.
1754 Function *SavedCurFn = CurFun.CurrentFunction;
1755 CurFun.CurrentFunction = 0;
1757 Value *V = getExistingVal(Ty, $2);
1760 CurFun.CurrentFunction = SavedCurFn;
1762 // If this is an initializer for a constant pointer, which is referencing a
1763 // (currently) undefined variable, create a stub now that shall be replaced
1764 // in the future with the right type of variable.
1767 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1768 const PointerType *PT = cast<PointerType>(Ty);
1770 // First check to see if the forward references value is already created!
1771 PerModuleInfo::GlobalRefsType::iterator I =
1772 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1774 if (I != CurModule.GlobalRefs.end()) {
1775 V = I->second; // Placeholder already exists, use it...
1779 if ($2.Type == ValID::GlobalName)
1780 Name = $2.getName();
1781 else if ($2.Type != ValID::GlobalID)
1782 GEN_ERROR("Invalid reference to global");
1784 // Create the forward referenced global.
1786 if (const FunctionType *FTy =
1787 dyn_cast<FunctionType>(PT->getElementType())) {
1788 GV = new Function(FTy, GlobalValue::ExternalWeakLinkage, Name,
1789 CurModule.CurrentModule);
1791 GV = new GlobalVariable(PT->getElementType(), false,
1792 GlobalValue::ExternalWeakLinkage, 0,
1793 Name, CurModule.CurrentModule);
1796 // Keep track of the fact that we have a forward ref to recycle it
1797 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1802 $$ = cast<GlobalValue>(V);
1803 delete $1; // Free the type handle
1807 if (!UpRefs.empty())
1808 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1809 if ($1->get() != $2->getType())
1810 GEN_ERROR("Mismatched types for constant expression: " +
1811 (*$1)->getDescription() + " and " + $2->getType()->getDescription());
1816 | Types ZEROINITIALIZER {
1817 if (!UpRefs.empty())
1818 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1819 const Type *Ty = $1->get();
1820 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1821 GEN_ERROR("Cannot create a null initialized value of this type");
1822 $$ = Constant::getNullValue(Ty);
1826 | IntType ESINT64VAL { // integral constants
1827 if (!ConstantInt::isValueValidForType($1, $2))
1828 GEN_ERROR("Constant value doesn't fit in type");
1829 $$ = ConstantInt::get($1, $2, true);
1832 | IntType ESAPINTVAL { // arbitrary precision integer constants
1833 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1834 if ($2->getBitWidth() > BitWidth) {
1835 GEN_ERROR("Constant value does not fit in type");
1837 $2->sextOrTrunc(BitWidth);
1838 $$ = ConstantInt::get(*$2);
1842 | IntType EUINT64VAL { // integral constants
1843 if (!ConstantInt::isValueValidForType($1, $2))
1844 GEN_ERROR("Constant value doesn't fit in type");
1845 $$ = ConstantInt::get($1, $2, false);
1848 | IntType EUAPINTVAL { // arbitrary precision integer constants
1849 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1850 if ($2->getBitWidth() > BitWidth) {
1851 GEN_ERROR("Constant value does not fit in type");
1853 $2->zextOrTrunc(BitWidth);
1854 $$ = ConstantInt::get(*$2);
1858 | INTTYPE TRUETOK { // Boolean constants
1859 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1860 $$ = ConstantInt::getTrue();
1863 | INTTYPE FALSETOK { // Boolean constants
1864 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1865 $$ = ConstantInt::getFalse();
1868 | FPType FPVAL { // Float & Double constants
1869 if (!ConstantFP::isValueValidForType($1, *$2))
1870 GEN_ERROR("Floating point constant invalid for type");
1871 // Lexer has no type info, so builds all FP constants as double.
1873 if ($1==Type::FloatTy)
1874 $2->convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven);
1875 $$ = ConstantFP::get($1, *$2);
1880 ConstExpr: CastOps '(' ConstVal TO Types ')' {
1881 if (!UpRefs.empty())
1882 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
1884 const Type *DestTy = $5->get();
1885 if (!CastInst::castIsValid($1, $3, DestTy))
1886 GEN_ERROR("invalid cast opcode for cast from '" +
1887 Val->getType()->getDescription() + "' to '" +
1888 DestTy->getDescription() + "'");
1889 $$ = ConstantExpr::getCast($1, $3, DestTy);
1892 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1893 if (!isa<PointerType>($3->getType()))
1894 GEN_ERROR("GetElementPtr requires a pointer operand");
1897 GetElementPtrInst::getIndexedType($3->getType(), $4->begin(), $4->end(),
1900 GEN_ERROR("Index list invalid for constant getelementptr");
1902 SmallVector<Constant*, 8> IdxVec;
1903 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1904 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1905 IdxVec.push_back(C);
1907 GEN_ERROR("Indices to constant getelementptr must be constants");
1911 $$ = ConstantExpr::getGetElementPtr($3, &IdxVec[0], IdxVec.size());
1914 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1915 if ($3->getType() != Type::Int1Ty)
1916 GEN_ERROR("Select condition must be of boolean type");
1917 if ($5->getType() != $7->getType())
1918 GEN_ERROR("Select operand types must match");
1919 $$ = ConstantExpr::getSelect($3, $5, $7);
1922 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1923 if ($3->getType() != $5->getType())
1924 GEN_ERROR("Binary operator types must match");
1926 $$ = ConstantExpr::get($1, $3, $5);
1928 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1929 if ($3->getType() != $5->getType())
1930 GEN_ERROR("Logical operator types must match");
1931 if (!$3->getType()->isInteger()) {
1932 if (Instruction::isShift($1) || !isa<VectorType>($3->getType()) ||
1933 !cast<VectorType>($3->getType())->getElementType()->isInteger())
1934 GEN_ERROR("Logical operator requires integral operands");
1936 $$ = ConstantExpr::get($1, $3, $5);
1939 | ICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1940 if ($4->getType() != $6->getType())
1941 GEN_ERROR("icmp operand types must match");
1942 $$ = ConstantExpr::getICmp($2, $4, $6);
1944 | FCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1945 if ($4->getType() != $6->getType())
1946 GEN_ERROR("fcmp operand types must match");
1947 $$ = ConstantExpr::getFCmp($2, $4, $6);
1949 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1950 if (!ExtractElementInst::isValidOperands($3, $5))
1951 GEN_ERROR("Invalid extractelement operands");
1952 $$ = ConstantExpr::getExtractElement($3, $5);
1955 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1956 if (!InsertElementInst::isValidOperands($3, $5, $7))
1957 GEN_ERROR("Invalid insertelement operands");
1958 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1961 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1962 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1963 GEN_ERROR("Invalid shufflevector operands");
1964 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1969 // ConstVector - A list of comma separated constants.
1970 ConstVector : ConstVector ',' ConstVal {
1971 ($$ = $1)->push_back($3);
1975 $$ = new std::vector<Constant*>();
1981 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1982 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1985 ThreadLocal : THREAD_LOCAL { $$ = true; } | { $$ = false; };
1987 // AliaseeRef - Match either GlobalValue or bitcast to GlobalValue.
1988 AliaseeRef : ResultTypes SymbolicValueRef {
1989 const Type* VTy = $1->get();
1990 Value *V = getVal(VTy, $2);
1992 GlobalValue* Aliasee = dyn_cast<GlobalValue>(V);
1994 GEN_ERROR("Aliases can be created only to global values");
2000 | BITCAST '(' AliaseeRef TO Types ')' {
2002 const Type *DestTy = $5->get();
2003 if (!CastInst::castIsValid($1, $3, DestTy))
2004 GEN_ERROR("invalid cast opcode for cast from '" +
2005 Val->getType()->getDescription() + "' to '" +
2006 DestTy->getDescription() + "'");
2008 $$ = ConstantExpr::getCast($1, $3, DestTy);
2013 //===----------------------------------------------------------------------===//
2014 // Rules to match Modules
2015 //===----------------------------------------------------------------------===//
2017 // Module rule: Capture the result of parsing the whole file into a result
2022 $$ = ParserResult = CurModule.CurrentModule;
2023 CurModule.ModuleDone();
2027 $$ = ParserResult = CurModule.CurrentModule;
2028 CurModule.ModuleDone();
2035 | DefinitionList Definition
2039 : DEFINE { CurFun.isDeclare = false; } Function {
2040 CurFun.FunctionDone();
2043 | DECLARE { CurFun.isDeclare = true; } FunctionProto {
2046 | MODULE ASM_TOK AsmBlock {
2049 | OptLocalAssign TYPE Types {
2050 if (!UpRefs.empty())
2051 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2052 // Eagerly resolve types. This is not an optimization, this is a
2053 // requirement that is due to the fact that we could have this:
2055 // %list = type { %list * }
2056 // %list = type { %list * } ; repeated type decl
2058 // If types are not resolved eagerly, then the two types will not be
2059 // determined to be the same type!
2061 ResolveTypeTo($1, *$3);
2063 if (!setTypeName(*$3, $1) && !$1) {
2065 // If this is a named type that is not a redefinition, add it to the slot
2067 CurModule.Types.push_back(*$3);
2073 | OptLocalAssign TYPE VOID {
2074 ResolveTypeTo($1, $3);
2076 if (!setTypeName($3, $1) && !$1) {
2078 // If this is a named type that is not a redefinition, add it to the slot
2080 CurModule.Types.push_back($3);
2084 | OptGlobalAssign GVVisibilityStyle ThreadLocal GlobalType ConstVal {
2085 /* "Externally Visible" Linkage */
2087 GEN_ERROR("Global value initializer is not a constant");
2088 CurGV = ParseGlobalVariable($1, GlobalValue::ExternalLinkage,
2089 $2, $4, $5->getType(), $5, $3);
2091 } GlobalVarAttributes {
2094 | OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2097 GEN_ERROR("Global value initializer is not a constant");
2098 CurGV = ParseGlobalVariable($1, $2, $3, $5, $6->getType(), $6, $4);
2100 } GlobalVarAttributes {
2103 | OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2105 if (!UpRefs.empty())
2106 GEN_ERROR("Invalid upreference in type: " + (*$6)->getDescription());
2107 CurGV = ParseGlobalVariable($1, $2, $3, $5, *$6, 0, $4);
2110 } GlobalVarAttributes {
2114 | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
2121 GEN_ERROR("Alias name cannot be empty");
2123 Constant* Aliasee = $5;
2125 GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
2127 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
2128 CurModule.CurrentModule);
2129 GA->setVisibility($2);
2130 InsertValue(GA, CurModule.Values);
2133 | TARGET TargetDefinition {
2136 | DEPLIBS '=' LibrariesDefinition {
2142 AsmBlock : STRINGCONSTANT {
2143 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
2144 if (AsmSoFar.empty())
2145 CurModule.CurrentModule->setModuleInlineAsm(*$1);
2147 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+*$1);
2152 TargetDefinition : TRIPLE '=' STRINGCONSTANT {
2153 CurModule.CurrentModule->setTargetTriple(*$3);
2156 | DATALAYOUT '=' STRINGCONSTANT {
2157 CurModule.CurrentModule->setDataLayout(*$3);
2161 LibrariesDefinition : '[' LibList ']';
2163 LibList : LibList ',' STRINGCONSTANT {
2164 CurModule.CurrentModule->addLibrary(*$3);
2169 CurModule.CurrentModule->addLibrary(*$1);
2173 | /* empty: end of list */ {
2178 //===----------------------------------------------------------------------===//
2179 // Rules to match Function Headers
2180 //===----------------------------------------------------------------------===//
2182 ArgListH : ArgListH ',' Types OptParamAttrs OptLocalName {
2183 if (!UpRefs.empty())
2184 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2185 if (*$3 == Type::VoidTy)
2186 GEN_ERROR("void typed arguments are invalid");
2187 ArgListEntry E; E.Attrs = $4; E.Ty = $3; E.Name = $5;
2192 | Types OptParamAttrs OptLocalName {
2193 if (!UpRefs.empty())
2194 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2195 if (*$1 == Type::VoidTy)
2196 GEN_ERROR("void typed arguments are invalid");
2197 ArgListEntry E; E.Attrs = $2; E.Ty = $1; E.Name = $3;
2198 $$ = new ArgListType;
2203 ArgList : ArgListH {
2207 | ArgListH ',' DOTDOTDOT {
2209 struct ArgListEntry E;
2210 E.Ty = new PATypeHolder(Type::VoidTy);
2212 E.Attrs = ParamAttr::None;
2217 $$ = new ArgListType;
2218 struct ArgListEntry E;
2219 E.Ty = new PATypeHolder(Type::VoidTy);
2221 E.Attrs = ParamAttr::None;
2230 FunctionHeaderH : OptCallingConv ResultTypes GlobalName '(' ArgList ')'
2231 OptFuncAttrs OptSection OptAlign {
2232 std::string FunctionName(*$3);
2233 delete $3; // Free strdup'd memory!
2235 // Check the function result for abstractness if this is a define. We should
2236 // have no abstract types at this point
2237 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved($2))
2238 GEN_ERROR("Reference to abstract result: "+ $2->get()->getDescription());
2240 std::vector<const Type*> ParamTypeList;
2241 ParamAttrsVector Attrs;
2242 if ($7 != ParamAttr::None) {
2243 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $7;
2244 Attrs.push_back(PAWI);
2246 if ($5) { // If there are arguments...
2248 for (ArgListType::iterator I = $5->begin(); I != $5->end(); ++I, ++index) {
2249 const Type* Ty = I->Ty->get();
2250 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved(I->Ty))
2251 GEN_ERROR("Reference to abstract argument: " + Ty->getDescription());
2252 ParamTypeList.push_back(Ty);
2253 if (Ty != Type::VoidTy)
2254 if (I->Attrs != ParamAttr::None) {
2255 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2256 Attrs.push_back(PAWI);
2261 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
2262 if (isVarArg) ParamTypeList.pop_back();
2264 ParamAttrsList *PAL = 0;
2266 PAL = ParamAttrsList::get(Attrs);
2268 FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg, PAL);
2269 const PointerType *PFT = PointerType::get(FT);
2273 if (!FunctionName.empty()) {
2274 ID = ValID::createGlobalName((char*)FunctionName.c_str());
2276 ID = ValID::createGlobalID(CurModule.Values.size());
2280 // See if this function was forward referenced. If so, recycle the object.
2281 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
2282 // Move the function to the end of the list, from whereever it was
2283 // previously inserted.
2284 Fn = cast<Function>(FWRef);
2285 CurModule.CurrentModule->getFunctionList().remove(Fn);
2286 CurModule.CurrentModule->getFunctionList().push_back(Fn);
2287 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
2288 (Fn = CurModule.CurrentModule->getFunction(FunctionName))) {
2289 if (Fn->getFunctionType() != FT) {
2290 // The existing function doesn't have the same type. This is an overload
2292 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2293 } else if (!CurFun.isDeclare && !Fn->isDeclaration()) {
2294 // Neither the existing or the current function is a declaration and they
2295 // have the same name and same type. Clearly this is a redefinition.
2296 GEN_ERROR("Redefinition of function '" + FunctionName + "'");
2297 } if (Fn->isDeclaration()) {
2298 // Make sure to strip off any argument names so we can't get conflicts.
2299 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2303 } else { // Not already defined?
2304 Fn = new Function(FT, GlobalValue::ExternalWeakLinkage, FunctionName,
2305 CurModule.CurrentModule);
2307 InsertValue(Fn, CurModule.Values);
2310 CurFun.FunctionStart(Fn);
2312 if (CurFun.isDeclare) {
2313 // If we have declaration, always overwrite linkage. This will allow us to
2314 // correctly handle cases, when pointer to function is passed as argument to
2315 // another function.
2316 Fn->setLinkage(CurFun.Linkage);
2317 Fn->setVisibility(CurFun.Visibility);
2319 Fn->setCallingConv($1);
2320 Fn->setAlignment($9);
2322 Fn->setSection(*$8);
2326 // Add all of the arguments we parsed to the function...
2327 if ($5) { // Is null if empty...
2328 if (isVarArg) { // Nuke the last entry
2329 assert($5->back().Ty->get() == Type::VoidTy && $5->back().Name == 0 &&
2330 "Not a varargs marker!");
2331 delete $5->back().Ty;
2332 $5->pop_back(); // Delete the last entry
2334 Function::arg_iterator ArgIt = Fn->arg_begin();
2335 Function::arg_iterator ArgEnd = Fn->arg_end();
2337 for (ArgListType::iterator I = $5->begin();
2338 I != $5->end() && ArgIt != ArgEnd; ++I, ++ArgIt) {
2339 delete I->Ty; // Delete the typeholder...
2340 setValueName(ArgIt, I->Name); // Insert arg into symtab...
2346 delete $5; // We're now done with the argument list
2351 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2353 FunctionHeader : FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN {
2354 $$ = CurFun.CurrentFunction;
2356 // Make sure that we keep track of the linkage type even if there was a
2357 // previous "declare".
2359 $$->setVisibility($2);
2362 END : ENDTOK | '}'; // Allow end of '}' to end a function
2364 Function : BasicBlockList END {
2369 FunctionProto : FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH {
2370 CurFun.CurrentFunction->setLinkage($1);
2371 CurFun.CurrentFunction->setVisibility($2);
2372 $$ = CurFun.CurrentFunction;
2373 CurFun.FunctionDone();
2377 //===----------------------------------------------------------------------===//
2378 // Rules to match Basic Blocks
2379 //===----------------------------------------------------------------------===//
2381 OptSideEffect : /* empty */ {
2390 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2391 $$ = ValID::create($1);
2395 $$ = ValID::create($1);
2398 | FPVAL { // Perhaps it's an FP constant?
2399 $$ = ValID::create($1);
2403 $$ = ValID::create(ConstantInt::getTrue());
2407 $$ = ValID::create(ConstantInt::getFalse());
2411 $$ = ValID::createNull();
2415 $$ = ValID::createUndef();
2418 | ZEROINITIALIZER { // A vector zero constant.
2419 $$ = ValID::createZeroInit();
2422 | '<' ConstVector '>' { // Nonempty unsized packed vector
2423 const Type *ETy = (*$2)[0]->getType();
2424 int NumElements = $2->size();
2426 VectorType* pt = VectorType::get(ETy, NumElements);
2427 PATypeHolder* PTy = new PATypeHolder(
2435 // Verify all elements are correct type!
2436 for (unsigned i = 0; i < $2->size(); i++) {
2437 if (ETy != (*$2)[i]->getType())
2438 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2439 ETy->getDescription() +"' as required!\nIt is of type '" +
2440 (*$2)[i]->getType()->getDescription() + "'.");
2443 $$ = ValID::create(ConstantVector::get(pt, *$2));
2444 delete PTy; delete $2;
2448 $$ = ValID::create($1);
2451 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2452 $$ = ValID::createInlineAsm(*$3, *$5, $2);
2458 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2461 SymbolicValueRef : LOCALVAL_ID { // Is it an integer reference...?
2462 $$ = ValID::createLocalID($1);
2466 $$ = ValID::createGlobalID($1);
2469 | LocalName { // Is it a named reference...?
2470 $$ = ValID::createLocalName(*$1);
2474 | GlobalName { // Is it a named reference...?
2475 $$ = ValID::createGlobalName(*$1);
2480 // ValueRef - A reference to a definition... either constant or symbolic
2481 ValueRef : SymbolicValueRef | ConstValueRef;
2484 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2485 // type immediately preceeds the value reference, and allows complex constant
2486 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2487 ResolvedVal : Types ValueRef {
2488 if (!UpRefs.empty())
2489 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2490 $$ = getVal(*$1, $2);
2496 BasicBlockList : BasicBlockList BasicBlock {
2500 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2506 // Basic blocks are terminated by branching instructions:
2507 // br, br/cc, switch, ret
2509 BasicBlock : InstructionList OptLocalAssign BBTerminatorInst {
2510 setValueName($3, $2);
2513 $1->getInstList().push_back($3);
2518 InstructionList : InstructionList Inst {
2519 if (CastInst *CI1 = dyn_cast<CastInst>($2))
2520 if (CastInst *CI2 = dyn_cast<CastInst>(CI1->getOperand(0)))
2521 if (CI2->getParent() == 0)
2522 $1->getInstList().push_back(CI2);
2523 $1->getInstList().push_back($2);
2527 | /* empty */ { // Empty space between instruction lists
2528 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum));
2531 | LABELSTR { // Labelled (named) basic block
2532 $$ = defineBBVal(ValID::createLocalName(*$1));
2538 BBTerminatorInst : RET ResolvedVal { // Return with a result...
2539 $$ = new ReturnInst($2);
2542 | RET VOID { // Return with no result...
2543 $$ = new ReturnInst();
2546 | BR LABEL ValueRef { // Unconditional Branch...
2547 BasicBlock* tmpBB = getBBVal($3);
2549 $$ = new BranchInst(tmpBB);
2550 } // Conditional Branch...
2551 | BR INTTYPE ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2552 assert(cast<IntegerType>($2)->getBitWidth() == 1 && "Not Bool?");
2553 BasicBlock* tmpBBA = getBBVal($6);
2555 BasicBlock* tmpBBB = getBBVal($9);
2557 Value* tmpVal = getVal(Type::Int1Ty, $3);
2559 $$ = new BranchInst(tmpBBA, tmpBBB, tmpVal);
2561 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2562 Value* tmpVal = getVal($2, $3);
2564 BasicBlock* tmpBB = getBBVal($6);
2566 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, $8->size());
2569 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2571 for (; I != E; ++I) {
2572 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2573 S->addCase(CI, I->second);
2575 GEN_ERROR("Switch case is constant, but not a simple integer");
2580 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2581 Value* tmpVal = getVal($2, $3);
2583 BasicBlock* tmpBB = getBBVal($6);
2585 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, 0);
2589 | INVOKE OptCallingConv ResultTypes ValueRef '(' ValueRefList ')' OptFuncAttrs
2590 TO LABEL ValueRef UNWIND LABEL ValueRef {
2592 // Handle the short syntax
2593 const PointerType *PFTy = 0;
2594 const FunctionType *Ty = 0;
2595 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2596 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2597 // Pull out the types of all of the arguments...
2598 std::vector<const Type*> ParamTypes;
2599 ParamAttrsVector Attrs;
2600 if ($8 != ParamAttr::None) {
2601 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $8;
2602 Attrs.push_back(PAWI);
2604 ValueRefList::iterator I = $6->begin(), E = $6->end();
2606 for (; I != E; ++I, ++index) {
2607 const Type *Ty = I->Val->getType();
2608 if (Ty == Type::VoidTy)
2609 GEN_ERROR("Short call syntax cannot be used with varargs");
2610 ParamTypes.push_back(Ty);
2611 if (I->Attrs != ParamAttr::None) {
2612 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2613 Attrs.push_back(PAWI);
2617 ParamAttrsList *PAL = 0;
2619 PAL = ParamAttrsList::get(Attrs);
2620 Ty = FunctionType::get($3->get(), ParamTypes, false, PAL);
2621 PFTy = PointerType::get(Ty);
2626 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2628 BasicBlock *Normal = getBBVal($11);
2630 BasicBlock *Except = getBBVal($14);
2633 // Check the arguments
2635 if ($6->empty()) { // Has no arguments?
2636 // Make sure no arguments is a good thing!
2637 if (Ty->getNumParams() != 0)
2638 GEN_ERROR("No arguments passed to a function that "
2639 "expects arguments");
2640 } else { // Has arguments?
2641 // Loop through FunctionType's arguments and ensure they are specified
2643 FunctionType::param_iterator I = Ty->param_begin();
2644 FunctionType::param_iterator E = Ty->param_end();
2645 ValueRefList::iterator ArgI = $6->begin(), ArgE = $6->end();
2647 for (; ArgI != ArgE && I != E; ++ArgI, ++I) {
2648 if (ArgI->Val->getType() != *I)
2649 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2650 (*I)->getDescription() + "'");
2651 Args.push_back(ArgI->Val);
2654 if (Ty->isVarArg()) {
2656 for (; ArgI != ArgE; ++ArgI)
2657 Args.push_back(ArgI->Val); // push the remaining varargs
2658 } else if (I != E || ArgI != ArgE)
2659 GEN_ERROR("Invalid number of parameters detected");
2662 // Create the InvokeInst
2663 InvokeInst *II = new InvokeInst(V, Normal, Except, Args.begin(), Args.end());
2664 II->setCallingConv($2);
2670 $$ = new UnwindInst();
2674 $$ = new UnreachableInst();
2680 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2682 Constant *V = cast<Constant>(getExistingVal($2, $3));
2685 GEN_ERROR("May only switch on a constant pool value");
2687 BasicBlock* tmpBB = getBBVal($6);
2689 $$->push_back(std::make_pair(V, tmpBB));
2691 | IntType ConstValueRef ',' LABEL ValueRef {
2692 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2693 Constant *V = cast<Constant>(getExistingVal($1, $2));
2697 GEN_ERROR("May only switch on a constant pool value");
2699 BasicBlock* tmpBB = getBBVal($5);
2701 $$->push_back(std::make_pair(V, tmpBB));
2704 Inst : OptLocalAssign InstVal {
2705 // Is this definition named?? if so, assign the name...
2706 setValueName($2, $1);
2714 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2715 if (!UpRefs.empty())
2716 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2717 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2718 Value* tmpVal = getVal(*$1, $3);
2720 BasicBlock* tmpBB = getBBVal($5);
2722 $$->push_back(std::make_pair(tmpVal, tmpBB));
2725 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2727 Value* tmpVal = getVal($1->front().first->getType(), $4);
2729 BasicBlock* tmpBB = getBBVal($6);
2731 $1->push_back(std::make_pair(tmpVal, tmpBB));
2735 ValueRefList : Types ValueRef OptParamAttrs {
2736 if (!UpRefs.empty())
2737 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2738 // Used for call and invoke instructions
2739 $$ = new ValueRefList();
2740 ValueRefListEntry E; E.Attrs = $3; E.Val = getVal($1->get(), $2);
2744 | ValueRefList ',' Types ValueRef OptParamAttrs {
2745 if (!UpRefs.empty())
2746 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2748 ValueRefListEntry E; E.Attrs = $5; E.Val = getVal($3->get(), $4);
2753 | /*empty*/ { $$ = new ValueRefList(); };
2755 IndexList // Used for gep instructions and constant expressions
2756 : /*empty*/ { $$ = new std::vector<Value*>(); }
2757 | IndexList ',' ResolvedVal {
2764 OptTailCall : TAIL CALL {
2773 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2774 if (!UpRefs.empty())
2775 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2776 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2777 !isa<VectorType>((*$2).get()))
2779 "Arithmetic operator requires integer, FP, or packed operands");
2780 if (isa<VectorType>((*$2).get()) &&
2781 ($1 == Instruction::URem ||
2782 $1 == Instruction::SRem ||
2783 $1 == Instruction::FRem))
2784 GEN_ERROR("Remainder not supported on vector types");
2785 Value* val1 = getVal(*$2, $3);
2787 Value* val2 = getVal(*$2, $5);
2789 $$ = BinaryOperator::create($1, val1, val2);
2791 GEN_ERROR("binary operator returned null");
2794 | LogicalOps Types ValueRef ',' ValueRef {
2795 if (!UpRefs.empty())
2796 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2797 if (!(*$2)->isInteger()) {
2798 if (Instruction::isShift($1) || !isa<VectorType>($2->get()) ||
2799 !cast<VectorType>($2->get())->getElementType()->isInteger())
2800 GEN_ERROR("Logical operator requires integral operands");
2802 Value* tmpVal1 = getVal(*$2, $3);
2804 Value* tmpVal2 = getVal(*$2, $5);
2806 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2808 GEN_ERROR("binary operator returned null");
2811 | ICMP IPredicates Types ValueRef ',' ValueRef {
2812 if (!UpRefs.empty())
2813 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2814 if (isa<VectorType>((*$3).get()))
2815 GEN_ERROR("Vector types not supported by icmp instruction");
2816 Value* tmpVal1 = getVal(*$3, $4);
2818 Value* tmpVal2 = getVal(*$3, $6);
2820 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2822 GEN_ERROR("icmp operator returned null");
2825 | FCMP FPredicates Types ValueRef ',' ValueRef {
2826 if (!UpRefs.empty())
2827 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2828 if (isa<VectorType>((*$3).get()))
2829 GEN_ERROR("Vector types not supported by fcmp instruction");
2830 Value* tmpVal1 = getVal(*$3, $4);
2832 Value* tmpVal2 = getVal(*$3, $6);
2834 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2836 GEN_ERROR("fcmp operator returned null");
2839 | CastOps ResolvedVal TO Types {
2840 if (!UpRefs.empty())
2841 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2843 const Type* DestTy = $4->get();
2844 if (!CastInst::castIsValid($1, Val, DestTy))
2845 GEN_ERROR("invalid cast opcode for cast from '" +
2846 Val->getType()->getDescription() + "' to '" +
2847 DestTy->getDescription() + "'");
2848 $$ = CastInst::create($1, Val, DestTy);
2851 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2852 if ($2->getType() != Type::Int1Ty)
2853 GEN_ERROR("select condition must be boolean");
2854 if ($4->getType() != $6->getType())
2855 GEN_ERROR("select value types should match");
2856 $$ = new SelectInst($2, $4, $6);
2859 | VAARG ResolvedVal ',' Types {
2860 if (!UpRefs.empty())
2861 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2862 $$ = new VAArgInst($2, *$4);
2866 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2867 if (!ExtractElementInst::isValidOperands($2, $4))
2868 GEN_ERROR("Invalid extractelement operands");
2869 $$ = new ExtractElementInst($2, $4);
2872 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2873 if (!InsertElementInst::isValidOperands($2, $4, $6))
2874 GEN_ERROR("Invalid insertelement operands");
2875 $$ = new InsertElementInst($2, $4, $6);
2878 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2879 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2880 GEN_ERROR("Invalid shufflevector operands");
2881 $$ = new ShuffleVectorInst($2, $4, $6);
2885 const Type *Ty = $2->front().first->getType();
2886 if (!Ty->isFirstClassType())
2887 GEN_ERROR("PHI node operands must be of first class type");
2888 $$ = new PHINode(Ty);
2889 ((PHINode*)$$)->reserveOperandSpace($2->size());
2890 while ($2->begin() != $2->end()) {
2891 if ($2->front().first->getType() != Ty)
2892 GEN_ERROR("All elements of a PHI node must be of the same type");
2893 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2896 delete $2; // Free the list...
2899 | OptTailCall OptCallingConv ResultTypes ValueRef '(' ValueRefList ')'
2902 // Handle the short syntax
2903 const PointerType *PFTy = 0;
2904 const FunctionType *Ty = 0;
2905 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2906 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2907 // Pull out the types of all of the arguments...
2908 std::vector<const Type*> ParamTypes;
2909 ParamAttrsVector Attrs;
2910 if ($8 != ParamAttr::None) {
2911 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $8;
2912 Attrs.push_back(PAWI);
2915 ValueRefList::iterator I = $6->begin(), E = $6->end();
2916 for (; I != E; ++I, ++index) {
2917 const Type *Ty = I->Val->getType();
2918 if (Ty == Type::VoidTy)
2919 GEN_ERROR("Short call syntax cannot be used with varargs");
2920 ParamTypes.push_back(Ty);
2921 if (I->Attrs != ParamAttr::None) {
2922 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2923 Attrs.push_back(PAWI);
2927 ParamAttrsList *PAL = 0;
2929 PAL = ParamAttrsList::get(Attrs);
2931 Ty = FunctionType::get($3->get(), ParamTypes, false, PAL);
2932 PFTy = PointerType::get(Ty);
2935 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2938 // Check for call to invalid intrinsic to avoid crashing later.
2939 if (Function *theF = dyn_cast<Function>(V)) {
2940 if (theF->hasName() && (theF->getValueName()->getKeyLength() >= 5) &&
2941 (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
2942 !theF->getIntrinsicID(true))
2943 GEN_ERROR("Call to invalid LLVM intrinsic function '" +
2944 theF->getName() + "'");
2947 // Check the arguments
2949 if ($6->empty()) { // Has no arguments?
2950 // Make sure no arguments is a good thing!
2951 if (Ty->getNumParams() != 0)
2952 GEN_ERROR("No arguments passed to a function that "
2953 "expects arguments");
2954 } else { // Has arguments?
2955 // Loop through FunctionType's arguments and ensure they are specified
2958 FunctionType::param_iterator I = Ty->param_begin();
2959 FunctionType::param_iterator E = Ty->param_end();
2960 ValueRefList::iterator ArgI = $6->begin(), ArgE = $6->end();
2962 for (; ArgI != ArgE && I != E; ++ArgI, ++I) {
2963 if (ArgI->Val->getType() != *I)
2964 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2965 (*I)->getDescription() + "'");
2966 Args.push_back(ArgI->Val);
2968 if (Ty->isVarArg()) {
2970 for (; ArgI != ArgE; ++ArgI)
2971 Args.push_back(ArgI->Val); // push the remaining varargs
2972 } else if (I != E || ArgI != ArgE)
2973 GEN_ERROR("Invalid number of parameters detected");
2975 // Create the call node
2976 CallInst *CI = new CallInst(V, Args.begin(), Args.end());
2977 CI->setTailCall($1);
2978 CI->setCallingConv($2);
2989 OptVolatile : VOLATILE {
3000 MemoryInst : MALLOC Types OptCAlign {
3001 if (!UpRefs.empty())
3002 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3003 $$ = new MallocInst(*$2, 0, $3);
3007 | MALLOC Types ',' INTTYPE ValueRef OptCAlign {
3008 if (!UpRefs.empty())
3009 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3010 Value* tmpVal = getVal($4, $5);
3012 $$ = new MallocInst(*$2, tmpVal, $6);
3015 | ALLOCA Types OptCAlign {
3016 if (!UpRefs.empty())
3017 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3018 $$ = new AllocaInst(*$2, 0, $3);
3022 | ALLOCA Types ',' INTTYPE ValueRef OptCAlign {
3023 if (!UpRefs.empty())
3024 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3025 Value* tmpVal = getVal($4, $5);
3027 $$ = new AllocaInst(*$2, tmpVal, $6);
3030 | FREE ResolvedVal {
3031 if (!isa<PointerType>($2->getType()))
3032 GEN_ERROR("Trying to free nonpointer type " +
3033 $2->getType()->getDescription() + "");
3034 $$ = new FreeInst($2);
3038 | OptVolatile LOAD Types ValueRef OptCAlign {
3039 if (!UpRefs.empty())
3040 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
3041 if (!isa<PointerType>($3->get()))
3042 GEN_ERROR("Can't load from nonpointer type: " +
3043 (*$3)->getDescription());
3044 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
3045 GEN_ERROR("Can't load from pointer of non-first-class type: " +
3046 (*$3)->getDescription());
3047 Value* tmpVal = getVal(*$3, $4);
3049 $$ = new LoadInst(tmpVal, "", $1, $5);
3052 | OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
3053 if (!UpRefs.empty())
3054 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
3055 const PointerType *PT = dyn_cast<PointerType>($5->get());
3057 GEN_ERROR("Can't store to a nonpointer type: " +
3058 (*$5)->getDescription());
3059 const Type *ElTy = PT->getElementType();
3060 if (ElTy != $3->getType())
3061 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
3062 "' into space of type '" + ElTy->getDescription() + "'");
3064 Value* tmpVal = getVal(*$5, $6);
3066 $$ = new StoreInst($3, tmpVal, $1, $7);
3069 | GETELEMENTPTR Types ValueRef IndexList {
3070 if (!UpRefs.empty())
3071 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3072 if (!isa<PointerType>($2->get()))
3073 GEN_ERROR("getelementptr insn requires pointer operand");
3075 if (!GetElementPtrInst::getIndexedType(*$2, $4->begin(), $4->end(), true))
3076 GEN_ERROR("Invalid getelementptr indices for type '" +
3077 (*$2)->getDescription()+ "'");
3078 Value* tmpVal = getVal(*$2, $3);
3080 $$ = new GetElementPtrInst(tmpVal, $4->begin(), $4->end());
3088 // common code from the two 'RunVMAsmParser' functions
3089 static Module* RunParser(Module * M) {
3091 llvmAsmlineno = 1; // Reset the current line number...
3092 CurModule.CurrentModule = M;
3097 // Check to make sure the parser succeeded
3100 delete ParserResult;
3104 // Emit an error if there are any unresolved types left.
3105 if (!CurModule.LateResolveTypes.empty()) {
3106 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
3107 if (DID.Type == ValID::LocalName) {
3108 GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
3110 GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
3113 delete ParserResult;
3117 // Emit an error if there are any unresolved values left.
3118 if (!CurModule.LateResolveValues.empty()) {
3119 Value *V = CurModule.LateResolveValues.back();
3120 std::map<Value*, std::pair<ValID, int> >::iterator I =
3121 CurModule.PlaceHolderInfo.find(V);
3123 if (I != CurModule.PlaceHolderInfo.end()) {
3124 ValID &DID = I->second.first;
3125 if (DID.Type == ValID::LocalName) {
3126 GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
3128 GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
3131 delete ParserResult;
3136 // Check to make sure that parsing produced a result
3140 // Reset ParserResult variable while saving its value for the result.
3141 Module *Result = ParserResult;
3147 void llvm::GenerateError(const std::string &message, int LineNo) {
3148 if (LineNo == -1) LineNo = llvmAsmlineno;
3149 // TODO: column number in exception
3151 TheParseError->setError(CurFilename, message, LineNo);
3155 int yyerror(const char *ErrorMsg) {
3157 = std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
3158 + ":" + utostr((unsigned) llvmAsmlineno) + ": ";
3159 std::string errMsg = where + "error: " + std::string(ErrorMsg);
3160 if (yychar != YYEMPTY && yychar != 0)
3161 errMsg += " while reading token: '" + std::string(llvmAsmtext, llvmAsmleng)+
3163 GenerateError(errMsg);