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/Support/GetElementPtrTypeIterator.h"
22 #include "llvm/Support/CommandLine.h"
23 #include "llvm/ADT/SmallVector.h"
24 #include "llvm/ADT/STLExtras.h"
25 #include "llvm/Support/MathExtras.h"
26 #include "llvm/Support/Streams.h"
35 // The following is a gross hack. In order to rid the libAsmParser library of
36 // exceptions, we have to have a way of getting the yyparse function to go into
37 // an error situation. So, whenever we want an error to occur, the GenerateError
38 // function (see bottom of file) sets TriggerError. Then, at the end of each
39 // production in the grammer we use CHECK_FOR_ERROR which will invoke YYERROR
40 // (a goto) to put YACC in error state. Furthermore, several calls to
41 // GenerateError are made from inside productions and they must simulate the
42 // previous exception behavior by exiting the production immediately. We have
43 // replaced these with the GEN_ERROR macro which calls GeneratError and then
44 // immediately invokes YYERROR. This would be so much cleaner if it was a
45 // recursive descent parser.
46 static bool TriggerError = false;
47 #define CHECK_FOR_ERROR { if (TriggerError) { TriggerError = false; YYABORT; } }
48 #define GEN_ERROR(msg) { GenerateError(msg); YYERROR; }
50 int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
51 int yylex(); // declaration" of xxx warnings.
55 std::string CurFilename;
58 Debug("debug-yacc", cl::desc("Print yacc debug state changes"),
59 cl::Hidden, cl::init(false));
64 static Module *ParserResult;
66 // DEBUG_UPREFS - Define this symbol if you want to enable debugging output
67 // relating to upreferences in the input stream.
69 //#define DEBUG_UPREFS 1
71 #define UR_OUT(X) cerr << X
76 #define YYERROR_VERBOSE 1
78 static GlobalVariable *CurGV;
81 // This contains info used when building the body of a function. It is
82 // destroyed when the function is completed.
84 typedef std::vector<Value *> ValueList; // Numbered defs
87 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers=0);
89 static struct PerModuleInfo {
90 Module *CurrentModule;
91 ValueList Values; // Module level numbered definitions
92 ValueList LateResolveValues;
93 std::vector<PATypeHolder> Types;
94 std::map<ValID, PATypeHolder> LateResolveTypes;
96 /// PlaceHolderInfo - When temporary placeholder objects are created, remember
97 /// how they were referenced and on which line of the input they came from so
98 /// that we can resolve them later and print error messages as appropriate.
99 std::map<Value*, std::pair<ValID, int> > PlaceHolderInfo;
101 // GlobalRefs - This maintains a mapping between <Type, ValID>'s and forward
102 // references to global values. Global values may be referenced before they
103 // are defined, and if so, the temporary object that they represent is held
104 // here. This is used for forward references of GlobalValues.
106 typedef std::map<std::pair<const PointerType *,
107 ValID>, GlobalValue*> GlobalRefsType;
108 GlobalRefsType GlobalRefs;
111 // If we could not resolve some functions at function compilation time
112 // (calls to functions before they are defined), resolve them now... Types
113 // are resolved when the constant pool has been completely parsed.
115 ResolveDefinitions(LateResolveValues);
119 // Check to make sure that all global value forward references have been
122 if (!GlobalRefs.empty()) {
123 std::string UndefinedReferences = "Unresolved global references exist:\n";
125 for (GlobalRefsType::iterator I = GlobalRefs.begin(), E =GlobalRefs.end();
127 UndefinedReferences += " " + I->first.first->getDescription() + " " +
128 I->first.second.getName() + "\n";
130 GenerateError(UndefinedReferences);
134 Values.clear(); // Clear out function local definitions
139 // GetForwardRefForGlobal - Check to see if there is a forward reference
140 // for this global. If so, remove it from the GlobalRefs map and return it.
141 // If not, just return null.
142 GlobalValue *GetForwardRefForGlobal(const PointerType *PTy, ValID ID) {
143 // Check to see if there is a forward reference to this global variable...
144 // if there is, eliminate it and patch the reference to use the new def'n.
145 GlobalRefsType::iterator I = GlobalRefs.find(std::make_pair(PTy, ID));
146 GlobalValue *Ret = 0;
147 if (I != GlobalRefs.end()) {
154 bool TypeIsUnresolved(PATypeHolder* PATy) {
155 // If it isn't abstract, its resolved
156 const Type* Ty = PATy->get();
157 if (!Ty->isAbstract())
159 // Traverse the type looking for abstract types. If it isn't abstract then
160 // we don't need to traverse that leg of the type.
161 std::vector<const Type*> WorkList, SeenList;
162 WorkList.push_back(Ty);
163 while (!WorkList.empty()) {
164 const Type* Ty = WorkList.back();
165 SeenList.push_back(Ty);
167 if (const OpaqueType* OpTy = dyn_cast<OpaqueType>(Ty)) {
168 // Check to see if this is an unresolved type
169 std::map<ValID, PATypeHolder>::iterator I = LateResolveTypes.begin();
170 std::map<ValID, PATypeHolder>::iterator E = LateResolveTypes.end();
171 for ( ; I != E; ++I) {
172 if (I->second.get() == OpTy)
175 } else if (const SequentialType* SeqTy = dyn_cast<SequentialType>(Ty)) {
176 const Type* TheTy = SeqTy->getElementType();
177 if (TheTy->isAbstract() && TheTy != Ty) {
178 std::vector<const Type*>::iterator I = SeenList.begin(),
184 WorkList.push_back(TheTy);
186 } else if (const StructType* StrTy = dyn_cast<StructType>(Ty)) {
187 for (unsigned i = 0; i < StrTy->getNumElements(); ++i) {
188 const Type* TheTy = StrTy->getElementType(i);
189 if (TheTy->isAbstract() && TheTy != Ty) {
190 std::vector<const Type*>::iterator I = SeenList.begin(),
196 WorkList.push_back(TheTy);
205 static struct PerFunctionInfo {
206 Function *CurrentFunction; // Pointer to current function being created
208 ValueList Values; // Keep track of #'d definitions
210 ValueList LateResolveValues;
211 bool isDeclare; // Is this function a forward declararation?
212 GlobalValue::LinkageTypes Linkage; // Linkage for forward declaration.
213 GlobalValue::VisibilityTypes Visibility;
215 /// BBForwardRefs - When we see forward references to basic blocks, keep
216 /// track of them here.
217 std::map<ValID, BasicBlock*> BBForwardRefs;
219 inline PerFunctionInfo() {
222 Linkage = GlobalValue::ExternalLinkage;
223 Visibility = GlobalValue::DefaultVisibility;
226 inline void FunctionStart(Function *M) {
231 void FunctionDone() {
232 // Any forward referenced blocks left?
233 if (!BBForwardRefs.empty()) {
234 GenerateError("Undefined reference to label " +
235 BBForwardRefs.begin()->second->getName());
239 // Resolve all forward references now.
240 ResolveDefinitions(LateResolveValues, &CurModule.LateResolveValues);
242 Values.clear(); // Clear out function local definitions
243 BBForwardRefs.clear();
246 Linkage = GlobalValue::ExternalLinkage;
247 Visibility = GlobalValue::DefaultVisibility;
249 } CurFun; // Info for the current function...
251 static bool inFunctionScope() { return CurFun.CurrentFunction != 0; }
254 //===----------------------------------------------------------------------===//
255 // Code to handle definitions of all the types
256 //===----------------------------------------------------------------------===//
258 static void InsertValue(Value *V, ValueList &ValueTab = CurFun.Values) {
259 // Things that have names or are void typed don't get slot numbers
260 if (V->hasName() || (V->getType() == Type::VoidTy))
263 // In the case of function values, we have to allow for the forward reference
264 // of basic blocks, which are included in the numbering. Consequently, we keep
265 // track of the next insertion location with NextValNum. When a BB gets
266 // inserted, it could change the size of the CurFun.Values vector.
267 if (&ValueTab == &CurFun.Values) {
268 if (ValueTab.size() <= CurFun.NextValNum)
269 ValueTab.resize(CurFun.NextValNum+1);
270 ValueTab[CurFun.NextValNum++] = V;
273 // For all other lists, its okay to just tack it on the back of the vector.
274 ValueTab.push_back(V);
277 static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
279 case ValID::LocalID: // Is it a numbered definition?
280 // Module constants occupy the lowest numbered slots...
281 if (D.Num < CurModule.Types.size())
282 return CurModule.Types[D.Num];
284 case ValID::LocalName: // Is it a named definition?
285 if (const Type *N = CurModule.CurrentModule->getTypeByName(D.getName())) {
286 D.destroy(); // Free old strdup'd memory...
291 GenerateError("Internal parser error: Invalid symbol type reference");
295 // If we reached here, we referenced either a symbol that we don't know about
296 // or an id number that hasn't been read yet. We may be referencing something
297 // forward, so just create an entry to be resolved later and get to it...
299 if (DoNotImprovise) return 0; // Do we just want a null to be returned?
302 if (inFunctionScope()) {
303 if (D.Type == ValID::LocalName) {
304 GenerateError("Reference to an undefined type: '" + D.getName() + "'");
307 GenerateError("Reference to an undefined type: #" + utostr(D.Num));
312 std::map<ValID, PATypeHolder>::iterator I =CurModule.LateResolveTypes.find(D);
313 if (I != CurModule.LateResolveTypes.end())
316 Type *Typ = OpaqueType::get();
317 CurModule.LateResolveTypes.insert(std::make_pair(D, Typ));
321 // getExistingVal - Look up the value specified by the provided type and
322 // the provided ValID. If the value exists and has already been defined, return
323 // it. Otherwise return null.
325 static Value *getExistingVal(const Type *Ty, const ValID &D) {
326 if (isa<FunctionType>(Ty)) {
327 GenerateError("Functions are not values and "
328 "must be referenced as pointers");
333 case ValID::LocalID: { // Is it a numbered definition?
334 // Check that the number is within bounds.
335 if (D.Num >= CurFun.Values.size())
337 Value *Result = CurFun.Values[D.Num];
338 if (Ty != Result->getType()) {
339 GenerateError("Numbered value (%" + utostr(D.Num) + ") of type '" +
340 Result->getType()->getDescription() + "' does not match "
341 "expected type, '" + Ty->getDescription() + "'");
346 case ValID::GlobalID: { // Is it a numbered definition?
347 if (D.Num >= CurModule.Values.size())
349 Value *Result = CurModule.Values[D.Num];
350 if (Ty != Result->getType()) {
351 GenerateError("Numbered value (@" + utostr(D.Num) + ") of type '" +
352 Result->getType()->getDescription() + "' does not match "
353 "expected type, '" + Ty->getDescription() + "'");
359 case ValID::LocalName: { // Is it a named definition?
360 if (!inFunctionScope())
362 ValueSymbolTable &SymTab = CurFun.CurrentFunction->getValueSymbolTable();
363 Value *N = SymTab.lookup(D.getName());
366 if (N->getType() != Ty)
369 D.destroy(); // Free old strdup'd memory...
372 case ValID::GlobalName: { // Is it a named definition?
373 ValueSymbolTable &SymTab = CurModule.CurrentModule->getValueSymbolTable();
374 Value *N = SymTab.lookup(D.getName());
377 if (N->getType() != Ty)
380 D.destroy(); // Free old strdup'd memory...
384 // Check to make sure that "Ty" is an integral type, and that our
385 // value will fit into the specified type...
386 case ValID::ConstSIntVal: // Is it a constant pool reference??
387 if (!ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
388 GenerateError("Signed integral constant '" +
389 itostr(D.ConstPool64) + "' is invalid for type '" +
390 Ty->getDescription() + "'");
393 return ConstantInt::get(Ty, D.ConstPool64, true);
395 case ValID::ConstUIntVal: // Is it an unsigned const pool reference?
396 if (!ConstantInt::isValueValidForType(Ty, D.UConstPool64)) {
397 if (!ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
398 GenerateError("Integral constant '" + utostr(D.UConstPool64) +
399 "' is invalid or out of range");
401 } else { // This is really a signed reference. Transmogrify.
402 return ConstantInt::get(Ty, D.ConstPool64, true);
405 return ConstantInt::get(Ty, D.UConstPool64);
408 case ValID::ConstFPVal: // Is it a floating point const pool reference?
409 if (!ConstantFP::isValueValidForType(Ty, D.ConstPoolFP)) {
410 GenerateError("FP constant invalid for type");
413 return ConstantFP::get(Ty, D.ConstPoolFP);
415 case ValID::ConstNullVal: // Is it a null value?
416 if (!isa<PointerType>(Ty)) {
417 GenerateError("Cannot create a a non pointer null");
420 return ConstantPointerNull::get(cast<PointerType>(Ty));
422 case ValID::ConstUndefVal: // Is it an undef value?
423 return UndefValue::get(Ty);
425 case ValID::ConstZeroVal: // Is it a zero value?
426 return Constant::getNullValue(Ty);
428 case ValID::ConstantVal: // Fully resolved constant?
429 if (D.ConstantValue->getType() != Ty) {
430 GenerateError("Constant expression type different from required type");
433 return D.ConstantValue;
435 case ValID::InlineAsmVal: { // Inline asm expression
436 const PointerType *PTy = dyn_cast<PointerType>(Ty);
437 const FunctionType *FTy =
438 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
439 if (!FTy || !InlineAsm::Verify(FTy, D.IAD->Constraints)) {
440 GenerateError("Invalid type for asm constraint string");
443 InlineAsm *IA = InlineAsm::get(FTy, D.IAD->AsmString, D.IAD->Constraints,
444 D.IAD->HasSideEffects);
445 D.destroy(); // Free InlineAsmDescriptor.
449 assert(0 && "Unhandled case!");
453 assert(0 && "Unhandled case!");
457 // getVal - This function is identical to getExistingVal, except that if a
458 // value is not already defined, it "improvises" by creating a placeholder var
459 // that looks and acts just like the requested variable. When the value is
460 // defined later, all uses of the placeholder variable are replaced with the
463 static Value *getVal(const Type *Ty, const ValID &ID) {
464 if (Ty == Type::LabelTy) {
465 GenerateError("Cannot use a basic block here");
469 // See if the value has already been defined.
470 Value *V = getExistingVal(Ty, ID);
472 if (TriggerError) return 0;
474 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty)) {
475 GenerateError("Invalid use of a composite type");
479 // If we reached here, we referenced either a symbol that we don't know about
480 // or an id number that hasn't been read yet. We may be referencing something
481 // forward, so just create an entry to be resolved later and get to it...
484 case ValID::GlobalName:
485 case ValID::GlobalID: {
486 const PointerType *PTy = dyn_cast<PointerType>(Ty);
488 GenerateError("Invalid type for reference to global" );
491 const Type* ElTy = PTy->getElementType();
492 if (const FunctionType *FTy = dyn_cast<FunctionType>(ElTy))
493 V = new Function(FTy, GlobalValue::ExternalLinkage);
495 V = new GlobalVariable(ElTy, false, GlobalValue::ExternalLinkage);
499 V = new Argument(Ty);
502 // Remember where this forward reference came from. FIXME, shouldn't we try
503 // to recycle these things??
504 CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
507 if (inFunctionScope())
508 InsertValue(V, CurFun.LateResolveValues);
510 InsertValue(V, CurModule.LateResolveValues);
514 /// defineBBVal - This is a definition of a new basic block with the specified
515 /// identifier which must be the same as CurFun.NextValNum, if its numeric.
516 static BasicBlock *defineBBVal(const ValID &ID) {
517 assert(inFunctionScope() && "Can't get basic block at global scope!");
521 // First, see if this was forward referenced
523 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
524 if (BBI != CurFun.BBForwardRefs.end()) {
526 // The forward declaration could have been inserted anywhere in the
527 // function: insert it into the correct place now.
528 CurFun.CurrentFunction->getBasicBlockList().remove(BB);
529 CurFun.CurrentFunction->getBasicBlockList().push_back(BB);
531 // We're about to erase the entry, save the key so we can clean it up.
532 ValID Tmp = BBI->first;
534 // Erase the forward ref from the map as its no longer "forward"
535 CurFun.BBForwardRefs.erase(ID);
537 // The key has been removed from the map but so we don't want to leave
538 // strdup'd memory around so destroy it too.
541 // If its a numbered definition, bump the number and set the BB value.
542 if (ID.Type == ValID::LocalID) {
543 assert(ID.Num == CurFun.NextValNum && "Invalid new block number");
551 // We haven't seen this BB before and its first mention is a definition.
552 // Just create it and return it.
553 std::string Name (ID.Type == ValID::LocalName ? ID.getName() : "");
554 BB = new BasicBlock(Name, CurFun.CurrentFunction);
555 if (ID.Type == ValID::LocalID) {
556 assert(ID.Num == CurFun.NextValNum && "Invalid new block number");
560 ID.destroy(); // Free strdup'd memory
564 /// getBBVal - get an existing BB value or create a forward reference for it.
566 static BasicBlock *getBBVal(const ValID &ID) {
567 assert(inFunctionScope() && "Can't get basic block at global scope!");
571 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
572 if (BBI != CurFun.BBForwardRefs.end()) {
574 } if (ID.Type == ValID::LocalName) {
575 std::string Name = ID.getName();
576 Value *N = CurFun.CurrentFunction->getValueSymbolTable().lookup(Name);
578 if (N->getType()->getTypeID() == Type::LabelTyID)
579 BB = cast<BasicBlock>(N);
581 GenerateError("Reference to label '" + Name + "' is actually of type '"+
582 N->getType()->getDescription() + "'");
583 } else if (ID.Type == ValID::LocalID) {
584 if (ID.Num < CurFun.NextValNum && ID.Num < CurFun.Values.size()) {
585 if (CurFun.Values[ID.Num]->getType()->getTypeID() == Type::LabelTyID)
586 BB = cast<BasicBlock>(CurFun.Values[ID.Num]);
588 GenerateError("Reference to label '%" + utostr(ID.Num) +
589 "' is actually of type '"+
590 CurFun.Values[ID.Num]->getType()->getDescription() + "'");
593 GenerateError("Illegal label reference " + ID.getName());
597 // If its already been defined, return it now.
599 ID.destroy(); // Free strdup'd memory.
603 // Otherwise, this block has not been seen before, create it.
605 if (ID.Type == ValID::LocalName)
607 BB = new BasicBlock(Name, CurFun.CurrentFunction);
609 // Insert it in the forward refs map.
610 CurFun.BBForwardRefs[ID] = BB;
616 //===----------------------------------------------------------------------===//
617 // Code to handle forward references in instructions
618 //===----------------------------------------------------------------------===//
620 // This code handles the late binding needed with statements that reference
621 // values not defined yet... for example, a forward branch, or the PHI node for
624 // This keeps a table (CurFun.LateResolveValues) of all such forward references
625 // and back patchs after we are done.
628 // ResolveDefinitions - If we could not resolve some defs at parsing
629 // time (forward branches, phi functions for loops, etc...) resolve the
633 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers) {
634 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
635 while (!LateResolvers.empty()) {
636 Value *V = LateResolvers.back();
637 LateResolvers.pop_back();
639 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
640 CurModule.PlaceHolderInfo.find(V);
641 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
643 ValID &DID = PHI->second.first;
645 Value *TheRealValue = getExistingVal(V->getType(), DID);
649 V->replaceAllUsesWith(TheRealValue);
651 CurModule.PlaceHolderInfo.erase(PHI);
652 } else if (FutureLateResolvers) {
653 // Functions have their unresolved items forwarded to the module late
655 InsertValue(V, *FutureLateResolvers);
657 if (DID.Type == ValID::LocalName || DID.Type == ValID::GlobalName) {
658 GenerateError("Reference to an invalid definition: '" +DID.getName()+
659 "' of type '" + V->getType()->getDescription() + "'",
663 GenerateError("Reference to an invalid definition: #" +
664 itostr(DID.Num) + " of type '" +
665 V->getType()->getDescription() + "'",
671 LateResolvers.clear();
674 // ResolveTypeTo - A brand new type was just declared. This means that (if
675 // name is not null) things referencing Name can be resolved. Otherwise, things
676 // refering to the number can be resolved. Do this now.
678 static void ResolveTypeTo(std::string *Name, const Type *ToTy) {
681 D = ValID::createLocalName(*Name);
683 D = ValID::createLocalID(CurModule.Types.size());
685 std::map<ValID, PATypeHolder>::iterator I =
686 CurModule.LateResolveTypes.find(D);
687 if (I != CurModule.LateResolveTypes.end()) {
688 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
689 CurModule.LateResolveTypes.erase(I);
693 // setValueName - Set the specified value to the name given. The name may be
694 // null potentially, in which case this is a noop. The string passed in is
695 // assumed to be a malloc'd string buffer, and is free'd by this function.
697 static void setValueName(Value *V, std::string *NameStr) {
698 if (!NameStr) return;
699 std::string Name(*NameStr); // Copy string
700 delete NameStr; // Free old string
702 if (V->getType() == Type::VoidTy) {
703 GenerateError("Can't assign name '" + Name+"' to value with void type");
707 assert(inFunctionScope() && "Must be in function scope!");
708 ValueSymbolTable &ST = CurFun.CurrentFunction->getValueSymbolTable();
709 if (ST.lookup(Name)) {
710 GenerateError("Redefinition of value '" + Name + "' of type '" +
711 V->getType()->getDescription() + "'");
719 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
720 /// this is a declaration, otherwise it is a definition.
721 static GlobalVariable *
722 ParseGlobalVariable(std::string *NameStr,
723 GlobalValue::LinkageTypes Linkage,
724 GlobalValue::VisibilityTypes Visibility,
725 bool isConstantGlobal, const Type *Ty,
726 Constant *Initializer, bool IsThreadLocal) {
727 if (isa<FunctionType>(Ty)) {
728 GenerateError("Cannot declare global vars of function type");
732 const PointerType *PTy = PointerType::get(Ty);
736 Name = *NameStr; // Copy string
737 delete NameStr; // Free old string
740 // See if this global value was forward referenced. If so, recycle the
744 ID = ValID::createGlobalName(Name);
746 ID = ValID::createGlobalID(CurModule.Values.size());
749 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
750 // Move the global to the end of the list, from whereever it was
751 // previously inserted.
752 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
753 CurModule.CurrentModule->getGlobalList().remove(GV);
754 CurModule.CurrentModule->getGlobalList().push_back(GV);
755 GV->setInitializer(Initializer);
756 GV->setLinkage(Linkage);
757 GV->setVisibility(Visibility);
758 GV->setConstant(isConstantGlobal);
759 GV->setThreadLocal(IsThreadLocal);
760 InsertValue(GV, CurModule.Values);
764 // If this global has a name
766 // if the global we're parsing has an initializer (is a definition) and
767 // has external linkage.
768 if (Initializer && Linkage != GlobalValue::InternalLinkage)
769 // If there is already a global with external linkage with this name
770 if (CurModule.CurrentModule->getGlobalVariable(Name, false)) {
771 // If we allow this GVar to get created, it will be renamed in the
772 // symbol table because it conflicts with an existing GVar. We can't
773 // allow redefinition of GVars whose linking indicates that their name
774 // must stay the same. Issue the error.
775 GenerateError("Redefinition of global variable named '" + Name +
776 "' of type '" + Ty->getDescription() + "'");
781 // Otherwise there is no existing GV to use, create one now.
783 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
784 CurModule.CurrentModule, IsThreadLocal);
785 GV->setVisibility(Visibility);
786 InsertValue(GV, CurModule.Values);
790 // setTypeName - Set the specified type to the name given. The name may be
791 // null potentially, in which case this is a noop. The string passed in is
792 // assumed to be a malloc'd string buffer, and is freed by this function.
794 // This function returns true if the type has already been defined, but is
795 // allowed to be redefined in the specified context. If the name is a new name
796 // for the type plane, it is inserted and false is returned.
797 static bool setTypeName(const Type *T, std::string *NameStr) {
798 assert(!inFunctionScope() && "Can't give types function-local names!");
799 if (NameStr == 0) return false;
801 std::string Name(*NameStr); // Copy string
802 delete NameStr; // Free old string
804 // We don't allow assigning names to void type
805 if (T == Type::VoidTy) {
806 GenerateError("Can't assign name '" + Name + "' to the void type");
810 // Set the type name, checking for conflicts as we do so.
811 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
813 if (AlreadyExists) { // Inserting a name that is already defined???
814 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
815 assert(Existing && "Conflict but no matching type?!");
817 // There is only one case where this is allowed: when we are refining an
818 // opaque type. In this case, Existing will be an opaque type.
819 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
820 // We ARE replacing an opaque type!
821 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
825 // Otherwise, this is an attempt to redefine a type. That's okay if
826 // the redefinition is identical to the original. This will be so if
827 // Existing and T point to the same Type object. In this one case we
828 // allow the equivalent redefinition.
829 if (Existing == T) return true; // Yes, it's equal.
831 // Any other kind of (non-equivalent) redefinition is an error.
832 GenerateError("Redefinition of type named '" + Name + "' of type '" +
833 T->getDescription() + "'");
839 //===----------------------------------------------------------------------===//
840 // Code for handling upreferences in type names...
843 // TypeContains - Returns true if Ty directly contains E in it.
845 static bool TypeContains(const Type *Ty, const Type *E) {
846 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
847 E) != Ty->subtype_end();
852 // NestingLevel - The number of nesting levels that need to be popped before
853 // this type is resolved.
854 unsigned NestingLevel;
856 // LastContainedTy - This is the type at the current binding level for the
857 // type. Every time we reduce the nesting level, this gets updated.
858 const Type *LastContainedTy;
860 // UpRefTy - This is the actual opaque type that the upreference is
864 UpRefRecord(unsigned NL, OpaqueType *URTy)
865 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
869 // UpRefs - A list of the outstanding upreferences that need to be resolved.
870 static std::vector<UpRefRecord> UpRefs;
872 /// HandleUpRefs - Every time we finish a new layer of types, this function is
873 /// called. It loops through the UpRefs vector, which is a list of the
874 /// currently active types. For each type, if the up reference is contained in
875 /// the newly completed type, we decrement the level count. When the level
876 /// count reaches zero, the upreferenced type is the type that is passed in:
877 /// thus we can complete the cycle.
879 static PATypeHolder HandleUpRefs(const Type *ty) {
880 // If Ty isn't abstract, or if there are no up-references in it, then there is
881 // nothing to resolve here.
882 if (!ty->isAbstract() || UpRefs.empty()) return ty;
885 UR_OUT("Type '" << Ty->getDescription() <<
886 "' newly formed. Resolving upreferences.\n" <<
887 UpRefs.size() << " upreferences active!\n");
889 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
890 // to zero), we resolve them all together before we resolve them to Ty. At
891 // the end of the loop, if there is anything to resolve to Ty, it will be in
893 OpaqueType *TypeToResolve = 0;
895 for (unsigned i = 0; i != UpRefs.size(); ++i) {
896 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
897 << UpRefs[i].second->getDescription() << ") = "
898 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
899 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
900 // Decrement level of upreference
901 unsigned Level = --UpRefs[i].NestingLevel;
902 UpRefs[i].LastContainedTy = Ty;
903 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
904 if (Level == 0) { // Upreference should be resolved!
905 if (!TypeToResolve) {
906 TypeToResolve = UpRefs[i].UpRefTy;
908 UR_OUT(" * Resolving upreference for "
909 << UpRefs[i].second->getDescription() << "\n";
910 std::string OldName = UpRefs[i].UpRefTy->getDescription());
911 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
912 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
913 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
915 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
916 --i; // Do not skip the next element...
922 UR_OUT(" * Resolving upreference for "
923 << UpRefs[i].second->getDescription() << "\n";
924 std::string OldName = TypeToResolve->getDescription());
925 TypeToResolve->refineAbstractTypeTo(Ty);
931 //===----------------------------------------------------------------------===//
932 // RunVMAsmParser - Define an interface to this parser
933 //===----------------------------------------------------------------------===//
935 static Module* RunParser(Module * M);
937 Module *llvm::RunVMAsmParser(const std::string &Filename, FILE *F) {
940 CurFilename = Filename;
941 return RunParser(new Module(CurFilename));
944 Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
945 set_scan_string(AsmString);
947 CurFilename = "from_memory";
949 return RunParser(new Module (CurFilename));
958 llvm::Module *ModuleVal;
959 llvm::Function *FunctionVal;
960 llvm::BasicBlock *BasicBlockVal;
961 llvm::TerminatorInst *TermInstVal;
962 llvm::Instruction *InstVal;
963 llvm::Constant *ConstVal;
965 const llvm::Type *PrimType;
966 std::list<llvm::PATypeHolder> *TypeList;
967 llvm::PATypeHolder *TypeVal;
968 llvm::Value *ValueVal;
969 std::vector<llvm::Value*> *ValueList;
970 llvm::ArgListType *ArgList;
971 llvm::TypeWithAttrs TypeWithAttrs;
972 llvm::TypeWithAttrsList *TypeWithAttrsList;
973 llvm::ValueRefList *ValueRefList;
975 // Represent the RHS of PHI node
976 std::list<std::pair<llvm::Value*,
977 llvm::BasicBlock*> > *PHIList;
978 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
979 std::vector<llvm::Constant*> *ConstVector;
981 llvm::GlobalValue::LinkageTypes Linkage;
982 llvm::GlobalValue::VisibilityTypes Visibility;
984 llvm::APInt *APIntVal;
992 std::string *StrVal; // This memory must be deleted
993 llvm::ValID ValIDVal;
995 llvm::Instruction::BinaryOps BinaryOpVal;
996 llvm::Instruction::TermOps TermOpVal;
997 llvm::Instruction::MemoryOps MemOpVal;
998 llvm::Instruction::CastOps CastOpVal;
999 llvm::Instruction::OtherOps OtherOpVal;
1000 llvm::ICmpInst::Predicate IPredicate;
1001 llvm::FCmpInst::Predicate FPredicate;
1004 %type <ModuleVal> Module
1005 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
1006 %type <BasicBlockVal> BasicBlock InstructionList
1007 %type <TermInstVal> BBTerminatorInst
1008 %type <InstVal> Inst InstVal MemoryInst
1009 %type <ConstVal> ConstVal ConstExpr AliaseeRef
1010 %type <ConstVector> ConstVector
1011 %type <ArgList> ArgList ArgListH
1012 %type <PHIList> PHIList
1013 %type <ValueRefList> ValueRefList // For call param lists & GEP indices
1014 %type <ValueList> IndexList // For GEP indices
1015 %type <TypeList> TypeListI
1016 %type <TypeWithAttrsList> ArgTypeList ArgTypeListI
1017 %type <TypeWithAttrs> ArgType
1018 %type <JumpTable> JumpTable
1019 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
1020 %type <BoolVal> ThreadLocal // 'thread_local' or not
1021 %type <BoolVal> OptVolatile // 'volatile' or not
1022 %type <BoolVal> OptTailCall // TAIL CALL or plain CALL.
1023 %type <BoolVal> OptSideEffect // 'sideeffect' or not.
1024 %type <Linkage> GVInternalLinkage GVExternalLinkage
1025 %type <Linkage> FunctionDefineLinkage FunctionDeclareLinkage
1026 %type <Linkage> AliasLinkage
1027 %type <Visibility> GVVisibilityStyle
1029 // ValueRef - Unresolved reference to a definition or BB
1030 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
1031 %type <ValueVal> ResolvedVal // <type> <valref> pair
1032 // Tokens and types for handling constant integer values
1034 // ESINT64VAL - A negative number within long long range
1035 %token <SInt64Val> ESINT64VAL
1037 // EUINT64VAL - A positive number within uns. long long range
1038 %token <UInt64Val> EUINT64VAL
1040 // ESAPINTVAL - A negative number with arbitrary precision
1041 %token <APIntVal> ESAPINTVAL
1043 // EUAPINTVAL - A positive number with arbitrary precision
1044 %token <APIntVal> EUAPINTVAL
1046 %token <UIntVal> LOCALVAL_ID GLOBALVAL_ID // %123 @123
1047 %token <FPVal> FPVAL // Float or Double constant
1049 // Built in types...
1050 %type <TypeVal> Types ResultTypes
1051 %type <PrimType> IntType FPType PrimType // Classifications
1052 %token <PrimType> VOID INTTYPE
1053 %token <PrimType> FLOAT DOUBLE LABEL
1057 %token<StrVal> LOCALVAR GLOBALVAR LABELSTR
1058 %token<StrVal> STRINGCONSTANT ATSTRINGCONSTANT PCTSTRINGCONSTANT
1059 %type <StrVal> LocalName OptLocalName OptLocalAssign
1060 %type <StrVal> GlobalName OptGlobalAssign GlobalAssign
1061 %type <StrVal> OptSection SectionString
1063 %type <UIntVal> OptAlign OptCAlign
1065 %token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
1066 %token DECLARE DEFINE GLOBAL CONSTANT SECTION ALIAS VOLATILE THREAD_LOCAL
1067 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
1068 %token DLLIMPORT DLLEXPORT EXTERN_WEAK
1069 %token OPAQUE EXTERNAL TARGET TRIPLE ALIGN
1070 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
1071 %token CC_TOK CCC_TOK FASTCC_TOK COLDCC_TOK X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
1073 %type <UIntVal> OptCallingConv
1074 %type <ParamAttrs> OptParamAttrs ParamAttr
1075 %type <ParamAttrs> OptFuncAttrs FuncAttr
1077 // Basic Block Terminating Operators
1078 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
1081 %type <BinaryOpVal> ArithmeticOps LogicalOps // Binops Subcatagories
1082 %token <BinaryOpVal> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
1083 %token <BinaryOpVal> SHL LSHR ASHR
1085 %token <OtherOpVal> ICMP FCMP
1086 %type <IPredicate> IPredicates
1087 %type <FPredicate> FPredicates
1088 %token EQ NE SLT SGT SLE SGE ULT UGT ULE UGE
1089 %token OEQ ONE OLT OGT OLE OGE ORD UNO UEQ UNE
1091 // Memory Instructions
1092 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
1095 %type <CastOpVal> CastOps
1096 %token <CastOpVal> TRUNC ZEXT SEXT FPTRUNC FPEXT BITCAST
1097 %token <CastOpVal> UITOFP SITOFP FPTOUI FPTOSI INTTOPTR PTRTOINT
1100 %token <OtherOpVal> PHI_TOK SELECT VAARG
1101 %token <OtherOpVal> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
1103 // Function Attributes
1104 %token SIGNEXT ZEROEXT NORETURN INREG SRET NOUNWIND NOALIAS BYVAL
1106 // Visibility Styles
1107 %token DEFAULT HIDDEN PROTECTED
1113 // Operations that are notably excluded from this list include:
1114 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
1116 ArithmeticOps: ADD | SUB | MUL | UDIV | SDIV | FDIV | UREM | SREM | FREM;
1117 LogicalOps : SHL | LSHR | ASHR | AND | OR | XOR;
1118 CastOps : TRUNC | ZEXT | SEXT | FPTRUNC | FPEXT | BITCAST |
1119 UITOFP | SITOFP | FPTOUI | FPTOSI | INTTOPTR | PTRTOINT;
1122 : EQ { $$ = ICmpInst::ICMP_EQ; } | NE { $$ = ICmpInst::ICMP_NE; }
1123 | SLT { $$ = ICmpInst::ICMP_SLT; } | SGT { $$ = ICmpInst::ICMP_SGT; }
1124 | SLE { $$ = ICmpInst::ICMP_SLE; } | SGE { $$ = ICmpInst::ICMP_SGE; }
1125 | ULT { $$ = ICmpInst::ICMP_ULT; } | UGT { $$ = ICmpInst::ICMP_UGT; }
1126 | ULE { $$ = ICmpInst::ICMP_ULE; } | UGE { $$ = ICmpInst::ICMP_UGE; }
1130 : OEQ { $$ = FCmpInst::FCMP_OEQ; } | ONE { $$ = FCmpInst::FCMP_ONE; }
1131 | OLT { $$ = FCmpInst::FCMP_OLT; } | OGT { $$ = FCmpInst::FCMP_OGT; }
1132 | OLE { $$ = FCmpInst::FCMP_OLE; } | OGE { $$ = FCmpInst::FCMP_OGE; }
1133 | ORD { $$ = FCmpInst::FCMP_ORD; } | UNO { $$ = FCmpInst::FCMP_UNO; }
1134 | UEQ { $$ = FCmpInst::FCMP_UEQ; } | UNE { $$ = FCmpInst::FCMP_UNE; }
1135 | ULT { $$ = FCmpInst::FCMP_ULT; } | UGT { $$ = FCmpInst::FCMP_UGT; }
1136 | ULE { $$ = FCmpInst::FCMP_ULE; } | UGE { $$ = FCmpInst::FCMP_UGE; }
1137 | TRUETOK { $$ = FCmpInst::FCMP_TRUE; }
1138 | FALSETOK { $$ = FCmpInst::FCMP_FALSE; }
1141 // These are some types that allow classification if we only want a particular
1142 // thing... for example, only a signed, unsigned, or integral type.
1144 FPType : FLOAT | DOUBLE;
1146 LocalName : LOCALVAR | STRINGCONSTANT | PCTSTRINGCONSTANT ;
1147 OptLocalName : LocalName | /*empty*/ { $$ = 0; };
1149 /// OptLocalAssign - Value producing statements have an optional assignment
1151 OptLocalAssign : LocalName '=' {
1160 GlobalName : GLOBALVAR | ATSTRINGCONSTANT ;
1162 OptGlobalAssign : GlobalAssign
1168 GlobalAssign : GlobalName '=' {
1174 : INTERNAL { $$ = GlobalValue::InternalLinkage; }
1175 | WEAK { $$ = GlobalValue::WeakLinkage; }
1176 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1177 | APPENDING { $$ = GlobalValue::AppendingLinkage; }
1178 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1182 : DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1183 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1184 | EXTERNAL { $$ = GlobalValue::ExternalLinkage; }
1188 : /*empty*/ { $$ = GlobalValue::DefaultVisibility; }
1189 | DEFAULT { $$ = GlobalValue::DefaultVisibility; }
1190 | HIDDEN { $$ = GlobalValue::HiddenVisibility; }
1191 | PROTECTED { $$ = GlobalValue::ProtectedVisibility; }
1194 FunctionDeclareLinkage
1195 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1196 | DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1197 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1200 FunctionDefineLinkage
1201 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1202 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1203 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1204 | WEAK { $$ = GlobalValue::WeakLinkage; }
1205 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1209 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1210 | WEAK { $$ = GlobalValue::WeakLinkage; }
1211 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1214 OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
1215 CCC_TOK { $$ = CallingConv::C; } |
1216 FASTCC_TOK { $$ = CallingConv::Fast; } |
1217 COLDCC_TOK { $$ = CallingConv::Cold; } |
1218 X86_STDCALLCC_TOK { $$ = CallingConv::X86_StdCall; } |
1219 X86_FASTCALLCC_TOK { $$ = CallingConv::X86_FastCall; } |
1221 if ((unsigned)$2 != $2)
1222 GEN_ERROR("Calling conv too large");
1227 ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; }
1228 | SIGNEXT { $$ = ParamAttr::SExt; }
1229 | INREG { $$ = ParamAttr::InReg; }
1230 | SRET { $$ = ParamAttr::StructRet; }
1231 | NOALIAS { $$ = ParamAttr::NoAlias; }
1232 | BYVAL { $$ = ParamAttr::ByVal; }
1235 OptParamAttrs : /* empty */ { $$ = ParamAttr::None; }
1236 | OptParamAttrs ParamAttr {
1241 FuncAttr : NORETURN { $$ = ParamAttr::NoReturn; }
1242 | NOUNWIND { $$ = ParamAttr::NoUnwind; }
1243 | ZEROEXT { $$ = ParamAttr::ZExt; }
1244 | SIGNEXT { $$ = ParamAttr::SExt; }
1247 OptFuncAttrs : /* empty */ { $$ = ParamAttr::None; }
1248 | OptFuncAttrs FuncAttr {
1253 // OptAlign/OptCAlign - An optional alignment, and an optional alignment with
1254 // a comma before it.
1255 OptAlign : /*empty*/ { $$ = 0; } |
1258 if ($$ != 0 && !isPowerOf2_32($$))
1259 GEN_ERROR("Alignment must be a power of two");
1262 OptCAlign : /*empty*/ { $$ = 0; } |
1263 ',' ALIGN EUINT64VAL {
1265 if ($$ != 0 && !isPowerOf2_32($$))
1266 GEN_ERROR("Alignment must be a power of two");
1271 SectionString : SECTION STRINGCONSTANT {
1272 for (unsigned i = 0, e = $2->length(); i != e; ++i)
1273 if ((*$2)[i] == '"' || (*$2)[i] == '\\')
1274 GEN_ERROR("Invalid character in section name");
1279 OptSection : /*empty*/ { $$ = 0; } |
1280 SectionString { $$ = $1; };
1282 // GlobalVarAttributes - Used to pass the attributes string on a global. CurGV
1283 // is set to be the global we are processing.
1285 GlobalVarAttributes : /* empty */ {} |
1286 ',' GlobalVarAttribute GlobalVarAttributes {};
1287 GlobalVarAttribute : SectionString {
1288 CurGV->setSection(*$1);
1292 | ALIGN EUINT64VAL {
1293 if ($2 != 0 && !isPowerOf2_32($2))
1294 GEN_ERROR("Alignment must be a power of two");
1295 CurGV->setAlignment($2);
1299 //===----------------------------------------------------------------------===//
1300 // Types includes all predefined types... except void, because it can only be
1301 // used in specific contexts (function returning void for example).
1303 // Derived types are added later...
1305 PrimType : INTTYPE | FLOAT | DOUBLE | LABEL ;
1309 $$ = new PATypeHolder(OpaqueType::get());
1313 $$ = new PATypeHolder($1);
1316 | Types '*' { // Pointer type?
1317 if (*$1 == Type::LabelTy)
1318 GEN_ERROR("Cannot form a pointer to a basic block");
1319 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1)));
1323 | SymbolicValueRef { // Named types are also simple types...
1324 const Type* tmp = getTypeVal($1);
1326 $$ = new PATypeHolder(tmp);
1328 | '\\' EUINT64VAL { // Type UpReference
1329 if ($2 > (uint64_t)~0U) GEN_ERROR("Value out of range");
1330 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1331 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1332 $$ = new PATypeHolder(OT);
1333 UR_OUT("New Upreference!\n");
1336 | Types '(' ArgTypeListI ')' OptFuncAttrs {
1337 std::vector<const Type*> Params;
1338 ParamAttrsVector Attrs;
1339 if ($5 != ParamAttr::None) {
1340 ParamAttrsWithIndex X; X.index = 0; X.attrs = $5;
1344 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1345 for (; I != E; ++I, ++index) {
1346 const Type *Ty = I->Ty->get();
1347 Params.push_back(Ty);
1348 if (Ty != Type::VoidTy)
1349 if (I->Attrs != ParamAttr::None) {
1350 ParamAttrsWithIndex X; X.index = index; X.attrs = I->Attrs;
1354 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1355 if (isVarArg) Params.pop_back();
1357 ParamAttrsList *ActualAttrs = 0;
1359 ActualAttrs = ParamAttrsList::get(Attrs);
1360 FunctionType *FT = FunctionType::get(*$1, Params, isVarArg, ActualAttrs);
1361 delete $3; // Delete the argument list
1362 delete $1; // Delete the return type handle
1363 $$ = new PATypeHolder(HandleUpRefs(FT));
1366 | VOID '(' ArgTypeListI ')' OptFuncAttrs {
1367 std::vector<const Type*> Params;
1368 ParamAttrsVector Attrs;
1369 if ($5 != ParamAttr::None) {
1370 ParamAttrsWithIndex X; X.index = 0; X.attrs = $5;
1373 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1375 for ( ; I != E; ++I, ++index) {
1376 const Type* Ty = I->Ty->get();
1377 Params.push_back(Ty);
1378 if (Ty != Type::VoidTy)
1379 if (I->Attrs != ParamAttr::None) {
1380 ParamAttrsWithIndex X; X.index = index; X.attrs = I->Attrs;
1384 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1385 if (isVarArg) Params.pop_back();
1387 ParamAttrsList *ActualAttrs = 0;
1389 ActualAttrs = ParamAttrsList::get(Attrs);
1391 FunctionType *FT = FunctionType::get($1, Params, isVarArg, ActualAttrs);
1392 delete $3; // Delete the argument list
1393 $$ = new PATypeHolder(HandleUpRefs(FT));
1397 | '[' EUINT64VAL 'x' Types ']' { // Sized array type?
1398 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1402 | '<' EUINT64VAL 'x' Types '>' { // Vector type?
1403 const llvm::Type* ElemTy = $4->get();
1404 if ((unsigned)$2 != $2)
1405 GEN_ERROR("Unsigned result not equal to signed result");
1406 if (!ElemTy->isFloatingPoint() && !ElemTy->isInteger())
1407 GEN_ERROR("Element type of a VectorType must be primitive");
1408 if (!isPowerOf2_32($2))
1409 GEN_ERROR("Vector length should be a power of 2");
1410 $$ = new PATypeHolder(HandleUpRefs(VectorType::get(*$4, (unsigned)$2)));
1414 | '{' TypeListI '}' { // Structure type?
1415 std::vector<const Type*> Elements;
1416 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1417 E = $2->end(); I != E; ++I)
1418 Elements.push_back(*I);
1420 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1424 | '{' '}' { // Empty structure type?
1425 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1428 | '<' '{' TypeListI '}' '>' {
1429 std::vector<const Type*> Elements;
1430 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1431 E = $3->end(); I != E; ++I)
1432 Elements.push_back(*I);
1434 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements, true)));
1438 | '<' '{' '}' '>' { // Empty structure type?
1439 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>(), true));
1445 : Types OptParamAttrs {
1453 if (!UpRefs.empty())
1454 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1455 if (!(*$1)->isFirstClassType())
1456 GEN_ERROR("LLVM functions cannot return aggregate types");
1460 $$ = new PATypeHolder(Type::VoidTy);
1464 ArgTypeList : ArgType {
1465 $$ = new TypeWithAttrsList();
1469 | ArgTypeList ',' ArgType {
1470 ($$=$1)->push_back($3);
1477 | ArgTypeList ',' DOTDOTDOT {
1479 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1480 TWA.Ty = new PATypeHolder(Type::VoidTy);
1485 $$ = new TypeWithAttrsList;
1486 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1487 TWA.Ty = new PATypeHolder(Type::VoidTy);
1492 $$ = new TypeWithAttrsList();
1496 // TypeList - Used for struct declarations and as a basis for function type
1497 // declaration type lists
1500 $$ = new std::list<PATypeHolder>();
1505 | TypeListI ',' Types {
1506 ($$=$1)->push_back(*$3);
1511 // ConstVal - The various declarations that go into the constant pool. This
1512 // production is used ONLY to represent constants that show up AFTER a 'const',
1513 // 'constant' or 'global' token at global scope. Constants that can be inlined
1514 // into other expressions (such as integers and constexprs) are handled by the
1515 // ResolvedVal, ValueRef and ConstValueRef productions.
1517 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1518 if (!UpRefs.empty())
1519 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1520 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1522 GEN_ERROR("Cannot make array constant with type: '" +
1523 (*$1)->getDescription() + "'");
1524 const Type *ETy = ATy->getElementType();
1525 int NumElements = ATy->getNumElements();
1527 // Verify that we have the correct size...
1528 if (NumElements != -1 && NumElements != (int)$3->size())
1529 GEN_ERROR("Type mismatch: constant sized array initialized with " +
1530 utostr($3->size()) + " arguments, but has size of " +
1531 itostr(NumElements) + "");
1533 // Verify all elements are correct type!
1534 for (unsigned i = 0; i < $3->size(); i++) {
1535 if (ETy != (*$3)[i]->getType())
1536 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1537 ETy->getDescription() +"' as required!\nIt is of type '"+
1538 (*$3)[i]->getType()->getDescription() + "'.");
1541 $$ = ConstantArray::get(ATy, *$3);
1542 delete $1; delete $3;
1546 if (!UpRefs.empty())
1547 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1548 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1550 GEN_ERROR("Cannot make array constant with type: '" +
1551 (*$1)->getDescription() + "'");
1553 int NumElements = ATy->getNumElements();
1554 if (NumElements != -1 && NumElements != 0)
1555 GEN_ERROR("Type mismatch: constant sized array initialized with 0"
1556 " arguments, but has size of " + itostr(NumElements) +"");
1557 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1561 | Types 'c' STRINGCONSTANT {
1562 if (!UpRefs.empty())
1563 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1564 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1566 GEN_ERROR("Cannot make array constant with type: '" +
1567 (*$1)->getDescription() + "'");
1569 int NumElements = ATy->getNumElements();
1570 const Type *ETy = ATy->getElementType();
1571 if (NumElements != -1 && NumElements != int($3->length()))
1572 GEN_ERROR("Can't build string constant of size " +
1573 itostr((int)($3->length())) +
1574 " when array has size " + itostr(NumElements) + "");
1575 std::vector<Constant*> Vals;
1576 if (ETy == Type::Int8Ty) {
1577 for (unsigned i = 0; i < $3->length(); ++i)
1578 Vals.push_back(ConstantInt::get(ETy, (*$3)[i]));
1581 GEN_ERROR("Cannot build string arrays of non byte sized elements");
1584 $$ = ConstantArray::get(ATy, Vals);
1588 | Types '<' ConstVector '>' { // Nonempty unsized arr
1589 if (!UpRefs.empty())
1590 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1591 const VectorType *PTy = dyn_cast<VectorType>($1->get());
1593 GEN_ERROR("Cannot make packed constant with type: '" +
1594 (*$1)->getDescription() + "'");
1595 const Type *ETy = PTy->getElementType();
1596 int NumElements = PTy->getNumElements();
1598 // Verify that we have the correct size...
1599 if (NumElements != -1 && NumElements != (int)$3->size())
1600 GEN_ERROR("Type mismatch: constant sized packed initialized with " +
1601 utostr($3->size()) + " arguments, but has size of " +
1602 itostr(NumElements) + "");
1604 // Verify all elements are correct type!
1605 for (unsigned i = 0; i < $3->size(); i++) {
1606 if (ETy != (*$3)[i]->getType())
1607 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1608 ETy->getDescription() +"' as required!\nIt is of type '"+
1609 (*$3)[i]->getType()->getDescription() + "'.");
1612 $$ = ConstantVector::get(PTy, *$3);
1613 delete $1; delete $3;
1616 | Types '{' ConstVector '}' {
1617 const StructType *STy = dyn_cast<StructType>($1->get());
1619 GEN_ERROR("Cannot make struct constant with type: '" +
1620 (*$1)->getDescription() + "'");
1622 if ($3->size() != STy->getNumContainedTypes())
1623 GEN_ERROR("Illegal number of initializers for structure type");
1625 // Check to ensure that constants are compatible with the type initializer!
1626 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1627 if ((*$3)[i]->getType() != STy->getElementType(i))
1628 GEN_ERROR("Expected type '" +
1629 STy->getElementType(i)->getDescription() +
1630 "' for element #" + utostr(i) +
1631 " of structure initializer");
1633 // Check to ensure that Type is not packed
1634 if (STy->isPacked())
1635 GEN_ERROR("Unpacked Initializer to vector type '" +
1636 STy->getDescription() + "'");
1638 $$ = ConstantStruct::get(STy, *$3);
1639 delete $1; delete $3;
1643 if (!UpRefs.empty())
1644 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1645 const StructType *STy = dyn_cast<StructType>($1->get());
1647 GEN_ERROR("Cannot make struct constant with type: '" +
1648 (*$1)->getDescription() + "'");
1650 if (STy->getNumContainedTypes() != 0)
1651 GEN_ERROR("Illegal number of initializers for structure type");
1653 // Check to ensure that Type is not packed
1654 if (STy->isPacked())
1655 GEN_ERROR("Unpacked Initializer to vector type '" +
1656 STy->getDescription() + "'");
1658 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1662 | Types '<' '{' ConstVector '}' '>' {
1663 const StructType *STy = dyn_cast<StructType>($1->get());
1665 GEN_ERROR("Cannot make struct constant with type: '" +
1666 (*$1)->getDescription() + "'");
1668 if ($4->size() != STy->getNumContainedTypes())
1669 GEN_ERROR("Illegal number of initializers for structure type");
1671 // Check to ensure that constants are compatible with the type initializer!
1672 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1673 if ((*$4)[i]->getType() != STy->getElementType(i))
1674 GEN_ERROR("Expected type '" +
1675 STy->getElementType(i)->getDescription() +
1676 "' for element #" + utostr(i) +
1677 " of structure initializer");
1679 // Check to ensure that Type is packed
1680 if (!STy->isPacked())
1681 GEN_ERROR("Vector initializer to non-vector type '" +
1682 STy->getDescription() + "'");
1684 $$ = ConstantStruct::get(STy, *$4);
1685 delete $1; delete $4;
1688 | Types '<' '{' '}' '>' {
1689 if (!UpRefs.empty())
1690 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1691 const StructType *STy = dyn_cast<StructType>($1->get());
1693 GEN_ERROR("Cannot make struct constant with type: '" +
1694 (*$1)->getDescription() + "'");
1696 if (STy->getNumContainedTypes() != 0)
1697 GEN_ERROR("Illegal number of initializers for structure type");
1699 // Check to ensure that Type is packed
1700 if (!STy->isPacked())
1701 GEN_ERROR("Vector initializer to non-vector type '" +
1702 STy->getDescription() + "'");
1704 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1709 if (!UpRefs.empty())
1710 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1711 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1713 GEN_ERROR("Cannot make null pointer constant with type: '" +
1714 (*$1)->getDescription() + "'");
1716 $$ = ConstantPointerNull::get(PTy);
1721 if (!UpRefs.empty())
1722 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1723 $$ = UndefValue::get($1->get());
1727 | Types SymbolicValueRef {
1728 if (!UpRefs.empty())
1729 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1730 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1732 GEN_ERROR("Global const reference must be a pointer type");
1734 // ConstExprs can exist in the body of a function, thus creating
1735 // GlobalValues whenever they refer to a variable. Because we are in
1736 // the context of a function, getExistingVal will search the functions
1737 // symbol table instead of the module symbol table for the global symbol,
1738 // which throws things all off. To get around this, we just tell
1739 // getExistingVal that we are at global scope here.
1741 Function *SavedCurFn = CurFun.CurrentFunction;
1742 CurFun.CurrentFunction = 0;
1744 Value *V = getExistingVal(Ty, $2);
1747 CurFun.CurrentFunction = SavedCurFn;
1749 // If this is an initializer for a constant pointer, which is referencing a
1750 // (currently) undefined variable, create a stub now that shall be replaced
1751 // in the future with the right type of variable.
1754 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1755 const PointerType *PT = cast<PointerType>(Ty);
1757 // First check to see if the forward references value is already created!
1758 PerModuleInfo::GlobalRefsType::iterator I =
1759 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1761 if (I != CurModule.GlobalRefs.end()) {
1762 V = I->second; // Placeholder already exists, use it...
1766 if ($2.Type == ValID::GlobalName)
1767 Name = $2.getName();
1768 else if ($2.Type != ValID::GlobalID)
1769 GEN_ERROR("Invalid reference to global");
1771 // Create the forward referenced global.
1773 if (const FunctionType *FTy =
1774 dyn_cast<FunctionType>(PT->getElementType())) {
1775 GV = new Function(FTy, GlobalValue::ExternalWeakLinkage, Name,
1776 CurModule.CurrentModule);
1778 GV = new GlobalVariable(PT->getElementType(), false,
1779 GlobalValue::ExternalWeakLinkage, 0,
1780 Name, CurModule.CurrentModule);
1783 // Keep track of the fact that we have a forward ref to recycle it
1784 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1789 $$ = cast<GlobalValue>(V);
1790 delete $1; // Free the type handle
1794 if (!UpRefs.empty())
1795 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1796 if ($1->get() != $2->getType())
1797 GEN_ERROR("Mismatched types for constant expression: " +
1798 (*$1)->getDescription() + " and " + $2->getType()->getDescription());
1803 | Types ZEROINITIALIZER {
1804 if (!UpRefs.empty())
1805 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1806 const Type *Ty = $1->get();
1807 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1808 GEN_ERROR("Cannot create a null initialized value of this type");
1809 $$ = Constant::getNullValue(Ty);
1813 | IntType ESINT64VAL { // integral constants
1814 if (!ConstantInt::isValueValidForType($1, $2))
1815 GEN_ERROR("Constant value doesn't fit in type");
1816 $$ = ConstantInt::get($1, $2, true);
1819 | IntType ESAPINTVAL { // arbitrary precision integer constants
1820 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1821 if ($2->getBitWidth() > BitWidth) {
1822 GEN_ERROR("Constant value does not fit in type");
1824 $2->sextOrTrunc(BitWidth);
1825 $$ = ConstantInt::get(*$2);
1829 | IntType EUINT64VAL { // integral constants
1830 if (!ConstantInt::isValueValidForType($1, $2))
1831 GEN_ERROR("Constant value doesn't fit in type");
1832 $$ = ConstantInt::get($1, $2, false);
1835 | IntType EUAPINTVAL { // arbitrary precision integer constants
1836 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1837 if ($2->getBitWidth() > BitWidth) {
1838 GEN_ERROR("Constant value does not fit in type");
1840 $2->zextOrTrunc(BitWidth);
1841 $$ = ConstantInt::get(*$2);
1845 | INTTYPE TRUETOK { // Boolean constants
1846 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1847 $$ = ConstantInt::getTrue();
1850 | INTTYPE FALSETOK { // Boolean constants
1851 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1852 $$ = ConstantInt::getFalse();
1855 | FPType FPVAL { // Float & Double constants
1856 if (!ConstantFP::isValueValidForType($1, $2))
1857 GEN_ERROR("Floating point constant invalid for type");
1858 $$ = ConstantFP::get($1, $2);
1863 ConstExpr: CastOps '(' ConstVal TO Types ')' {
1864 if (!UpRefs.empty())
1865 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
1867 const Type *DestTy = $5->get();
1868 if (!CastInst::castIsValid($1, $3, DestTy))
1869 GEN_ERROR("invalid cast opcode for cast from '" +
1870 Val->getType()->getDescription() + "' to '" +
1871 DestTy->getDescription() + "'");
1872 $$ = ConstantExpr::getCast($1, $3, DestTy);
1875 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1876 if (!isa<PointerType>($3->getType()))
1877 GEN_ERROR("GetElementPtr requires a pointer operand");
1880 GetElementPtrInst::getIndexedType($3->getType(), &(*$4)[0], $4->size(),
1883 GEN_ERROR("Index list invalid for constant getelementptr");
1885 SmallVector<Constant*, 8> IdxVec;
1886 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1887 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1888 IdxVec.push_back(C);
1890 GEN_ERROR("Indices to constant getelementptr must be constants");
1894 $$ = ConstantExpr::getGetElementPtr($3, &IdxVec[0], IdxVec.size());
1897 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1898 if ($3->getType() != Type::Int1Ty)
1899 GEN_ERROR("Select condition must be of boolean type");
1900 if ($5->getType() != $7->getType())
1901 GEN_ERROR("Select operand types must match");
1902 $$ = ConstantExpr::getSelect($3, $5, $7);
1905 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1906 if ($3->getType() != $5->getType())
1907 GEN_ERROR("Binary operator types must match");
1909 $$ = ConstantExpr::get($1, $3, $5);
1911 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1912 if ($3->getType() != $5->getType())
1913 GEN_ERROR("Logical operator types must match");
1914 if (!$3->getType()->isInteger()) {
1915 if (Instruction::isShift($1) || !isa<VectorType>($3->getType()) ||
1916 !cast<VectorType>($3->getType())->getElementType()->isInteger())
1917 GEN_ERROR("Logical operator requires integral operands");
1919 $$ = ConstantExpr::get($1, $3, $5);
1922 | ICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1923 if ($4->getType() != $6->getType())
1924 GEN_ERROR("icmp operand types must match");
1925 $$ = ConstantExpr::getICmp($2, $4, $6);
1927 | FCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1928 if ($4->getType() != $6->getType())
1929 GEN_ERROR("fcmp operand types must match");
1930 $$ = ConstantExpr::getFCmp($2, $4, $6);
1932 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1933 if (!ExtractElementInst::isValidOperands($3, $5))
1934 GEN_ERROR("Invalid extractelement operands");
1935 $$ = ConstantExpr::getExtractElement($3, $5);
1938 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1939 if (!InsertElementInst::isValidOperands($3, $5, $7))
1940 GEN_ERROR("Invalid insertelement operands");
1941 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1944 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1945 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1946 GEN_ERROR("Invalid shufflevector operands");
1947 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1952 // ConstVector - A list of comma separated constants.
1953 ConstVector : ConstVector ',' ConstVal {
1954 ($$ = $1)->push_back($3);
1958 $$ = new std::vector<Constant*>();
1964 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1965 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1968 ThreadLocal : THREAD_LOCAL { $$ = true; } | { $$ = false; };
1970 // AliaseeRef - Match either GlobalValue or bitcast to GlobalValue.
1971 AliaseeRef : ResultTypes SymbolicValueRef {
1972 const Type* VTy = $1->get();
1973 Value *V = getVal(VTy, $2);
1974 GlobalValue* Aliasee = dyn_cast<GlobalValue>(V);
1976 GEN_ERROR("Aliases can be created only to global values");
1982 | BITCAST '(' AliaseeRef TO Types ')' {
1984 const Type *DestTy = $5->get();
1985 if (!CastInst::castIsValid($1, $3, DestTy))
1986 GEN_ERROR("invalid cast opcode for cast from '" +
1987 Val->getType()->getDescription() + "' to '" +
1988 DestTy->getDescription() + "'");
1990 $$ = ConstantExpr::getCast($1, $3, DestTy);
1995 //===----------------------------------------------------------------------===//
1996 // Rules to match Modules
1997 //===----------------------------------------------------------------------===//
1999 // Module rule: Capture the result of parsing the whole file into a result
2004 $$ = ParserResult = CurModule.CurrentModule;
2005 CurModule.ModuleDone();
2009 $$ = ParserResult = CurModule.CurrentModule;
2010 CurModule.ModuleDone();
2017 | DefinitionList Definition
2021 : DEFINE { CurFun.isDeclare = false; } Function {
2022 CurFun.FunctionDone();
2025 | DECLARE { CurFun.isDeclare = true; } FunctionProto {
2028 | MODULE ASM_TOK AsmBlock {
2031 | OptLocalAssign TYPE Types {
2032 if (!UpRefs.empty())
2033 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2034 // Eagerly resolve types. This is not an optimization, this is a
2035 // requirement that is due to the fact that we could have this:
2037 // %list = type { %list * }
2038 // %list = type { %list * } ; repeated type decl
2040 // If types are not resolved eagerly, then the two types will not be
2041 // determined to be the same type!
2043 ResolveTypeTo($1, *$3);
2045 if (!setTypeName(*$3, $1) && !$1) {
2047 // If this is a named type that is not a redefinition, add it to the slot
2049 CurModule.Types.push_back(*$3);
2055 | OptLocalAssign TYPE VOID {
2056 ResolveTypeTo($1, $3);
2058 if (!setTypeName($3, $1) && !$1) {
2060 // If this is a named type that is not a redefinition, add it to the slot
2062 CurModule.Types.push_back($3);
2066 | OptGlobalAssign GVVisibilityStyle ThreadLocal GlobalType ConstVal {
2067 /* "Externally Visible" Linkage */
2069 GEN_ERROR("Global value initializer is not a constant");
2070 CurGV = ParseGlobalVariable($1, GlobalValue::ExternalLinkage,
2071 $2, $4, $5->getType(), $5, $3);
2073 } GlobalVarAttributes {
2076 | OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2079 GEN_ERROR("Global value initializer is not a constant");
2080 CurGV = ParseGlobalVariable($1, $2, $3, $5, $6->getType(), $6, $4);
2082 } GlobalVarAttributes {
2085 | OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2087 if (!UpRefs.empty())
2088 GEN_ERROR("Invalid upreference in type: " + (*$6)->getDescription());
2089 CurGV = ParseGlobalVariable($1, $2, $3, $5, *$6, 0, $4);
2092 } GlobalVarAttributes {
2096 | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
2103 GEN_ERROR("Alias name cannot be empty");
2105 Constant* Aliasee = $5;
2107 GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
2109 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
2110 CurModule.CurrentModule);
2111 GA->setVisibility($2);
2112 InsertValue(GA, CurModule.Values);
2115 | TARGET TargetDefinition {
2118 | DEPLIBS '=' LibrariesDefinition {
2124 AsmBlock : STRINGCONSTANT {
2125 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
2126 if (AsmSoFar.empty())
2127 CurModule.CurrentModule->setModuleInlineAsm(*$1);
2129 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+*$1);
2134 TargetDefinition : TRIPLE '=' STRINGCONSTANT {
2135 CurModule.CurrentModule->setTargetTriple(*$3);
2138 | DATALAYOUT '=' STRINGCONSTANT {
2139 CurModule.CurrentModule->setDataLayout(*$3);
2143 LibrariesDefinition : '[' LibList ']';
2145 LibList : LibList ',' STRINGCONSTANT {
2146 CurModule.CurrentModule->addLibrary(*$3);
2151 CurModule.CurrentModule->addLibrary(*$1);
2155 | /* empty: end of list */ {
2160 //===----------------------------------------------------------------------===//
2161 // Rules to match Function Headers
2162 //===----------------------------------------------------------------------===//
2164 ArgListH : ArgListH ',' Types OptParamAttrs OptLocalName {
2165 if (!UpRefs.empty())
2166 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2167 if (*$3 == Type::VoidTy)
2168 GEN_ERROR("void typed arguments are invalid");
2169 ArgListEntry E; E.Attrs = $4; E.Ty = $3; E.Name = $5;
2174 | Types OptParamAttrs OptLocalName {
2175 if (!UpRefs.empty())
2176 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2177 if (*$1 == Type::VoidTy)
2178 GEN_ERROR("void typed arguments are invalid");
2179 ArgListEntry E; E.Attrs = $2; E.Ty = $1; E.Name = $3;
2180 $$ = new ArgListType;
2185 ArgList : ArgListH {
2189 | ArgListH ',' DOTDOTDOT {
2191 struct ArgListEntry E;
2192 E.Ty = new PATypeHolder(Type::VoidTy);
2194 E.Attrs = ParamAttr::None;
2199 $$ = new ArgListType;
2200 struct ArgListEntry E;
2201 E.Ty = new PATypeHolder(Type::VoidTy);
2203 E.Attrs = ParamAttr::None;
2212 FunctionHeaderH : OptCallingConv ResultTypes GlobalName '(' ArgList ')'
2213 OptFuncAttrs OptSection OptAlign {
2214 std::string FunctionName(*$3);
2215 delete $3; // Free strdup'd memory!
2217 // Check the function result for abstractness if this is a define. We should
2218 // have no abstract types at this point
2219 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved($2))
2220 GEN_ERROR("Reference to abstract result: "+ $2->get()->getDescription());
2222 std::vector<const Type*> ParamTypeList;
2223 ParamAttrsVector Attrs;
2224 if ($7 != ParamAttr::None) {
2225 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $7;
2226 Attrs.push_back(PAWI);
2228 if ($5) { // If there are arguments...
2230 for (ArgListType::iterator I = $5->begin(); I != $5->end(); ++I, ++index) {
2231 const Type* Ty = I->Ty->get();
2232 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved(I->Ty))
2233 GEN_ERROR("Reference to abstract argument: " + Ty->getDescription());
2234 ParamTypeList.push_back(Ty);
2235 if (Ty != Type::VoidTy)
2236 if (I->Attrs != ParamAttr::None) {
2237 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2238 Attrs.push_back(PAWI);
2243 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
2244 if (isVarArg) ParamTypeList.pop_back();
2246 ParamAttrsList *PAL = 0;
2248 PAL = ParamAttrsList::get(Attrs);
2250 FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg, PAL);
2251 const PointerType *PFT = PointerType::get(FT);
2255 if (!FunctionName.empty()) {
2256 ID = ValID::createGlobalName((char*)FunctionName.c_str());
2258 ID = ValID::createGlobalID(CurModule.Values.size());
2262 // See if this function was forward referenced. If so, recycle the object.
2263 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
2264 // Move the function to the end of the list, from whereever it was
2265 // previously inserted.
2266 Fn = cast<Function>(FWRef);
2267 CurModule.CurrentModule->getFunctionList().remove(Fn);
2268 CurModule.CurrentModule->getFunctionList().push_back(Fn);
2269 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
2270 (Fn = CurModule.CurrentModule->getFunction(FunctionName))) {
2271 if (Fn->getFunctionType() != FT) {
2272 // The existing function doesn't have the same type. This is an overload
2274 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2275 } else if (!CurFun.isDeclare && !Fn->isDeclaration()) {
2276 // Neither the existing or the current function is a declaration and they
2277 // have the same name and same type. Clearly this is a redefinition.
2278 GEN_ERROR("Redefinition of function '" + FunctionName + "'");
2279 } if (Fn->isDeclaration()) {
2280 // Make sure to strip off any argument names so we can't get conflicts.
2281 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2285 } else { // Not already defined?
2286 Fn = new Function(FT, GlobalValue::ExternalWeakLinkage, FunctionName,
2287 CurModule.CurrentModule);
2289 InsertValue(Fn, CurModule.Values);
2292 CurFun.FunctionStart(Fn);
2294 if (CurFun.isDeclare) {
2295 // If we have declaration, always overwrite linkage. This will allow us to
2296 // correctly handle cases, when pointer to function is passed as argument to
2297 // another function.
2298 Fn->setLinkage(CurFun.Linkage);
2299 Fn->setVisibility(CurFun.Visibility);
2301 Fn->setCallingConv($1);
2302 Fn->setAlignment($9);
2304 Fn->setSection(*$8);
2308 // Add all of the arguments we parsed to the function...
2309 if ($5) { // Is null if empty...
2310 if (isVarArg) { // Nuke the last entry
2311 assert($5->back().Ty->get() == Type::VoidTy && $5->back().Name == 0 &&
2312 "Not a varargs marker!");
2313 delete $5->back().Ty;
2314 $5->pop_back(); // Delete the last entry
2316 Function::arg_iterator ArgIt = Fn->arg_begin();
2317 Function::arg_iterator ArgEnd = Fn->arg_end();
2319 for (ArgListType::iterator I = $5->begin();
2320 I != $5->end() && ArgIt != ArgEnd; ++I, ++ArgIt) {
2321 delete I->Ty; // Delete the typeholder...
2322 setValueName(ArgIt, I->Name); // Insert arg into symtab...
2328 delete $5; // We're now done with the argument list
2333 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2335 FunctionHeader : FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN {
2336 $$ = CurFun.CurrentFunction;
2338 // Make sure that we keep track of the linkage type even if there was a
2339 // previous "declare".
2341 $$->setVisibility($2);
2344 END : ENDTOK | '}'; // Allow end of '}' to end a function
2346 Function : BasicBlockList END {
2351 FunctionProto : FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH {
2352 CurFun.CurrentFunction->setLinkage($1);
2353 CurFun.CurrentFunction->setVisibility($2);
2354 $$ = CurFun.CurrentFunction;
2355 CurFun.FunctionDone();
2359 //===----------------------------------------------------------------------===//
2360 // Rules to match Basic Blocks
2361 //===----------------------------------------------------------------------===//
2363 OptSideEffect : /* empty */ {
2372 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2373 $$ = ValID::create($1);
2377 $$ = ValID::create($1);
2380 | FPVAL { // Perhaps it's an FP constant?
2381 $$ = ValID::create($1);
2385 $$ = ValID::create(ConstantInt::getTrue());
2389 $$ = ValID::create(ConstantInt::getFalse());
2393 $$ = ValID::createNull();
2397 $$ = ValID::createUndef();
2400 | ZEROINITIALIZER { // A vector zero constant.
2401 $$ = ValID::createZeroInit();
2404 | '<' ConstVector '>' { // Nonempty unsized packed vector
2405 const Type *ETy = (*$2)[0]->getType();
2406 int NumElements = $2->size();
2408 VectorType* pt = VectorType::get(ETy, NumElements);
2409 PATypeHolder* PTy = new PATypeHolder(
2417 // Verify all elements are correct type!
2418 for (unsigned i = 0; i < $2->size(); i++) {
2419 if (ETy != (*$2)[i]->getType())
2420 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2421 ETy->getDescription() +"' as required!\nIt is of type '" +
2422 (*$2)[i]->getType()->getDescription() + "'.");
2425 $$ = ValID::create(ConstantVector::get(pt, *$2));
2426 delete PTy; delete $2;
2430 $$ = ValID::create($1);
2433 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2434 $$ = ValID::createInlineAsm(*$3, *$5, $2);
2440 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2443 SymbolicValueRef : LOCALVAL_ID { // Is it an integer reference...?
2444 $$ = ValID::createLocalID($1);
2448 $$ = ValID::createGlobalID($1);
2451 | LocalName { // Is it a named reference...?
2452 $$ = ValID::createLocalName(*$1);
2456 | GlobalName { // Is it a named reference...?
2457 $$ = ValID::createGlobalName(*$1);
2462 // ValueRef - A reference to a definition... either constant or symbolic
2463 ValueRef : SymbolicValueRef | ConstValueRef;
2466 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2467 // type immediately preceeds the value reference, and allows complex constant
2468 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2469 ResolvedVal : Types ValueRef {
2470 if (!UpRefs.empty())
2471 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2472 $$ = getVal(*$1, $2);
2478 BasicBlockList : BasicBlockList BasicBlock {
2482 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2488 // Basic blocks are terminated by branching instructions:
2489 // br, br/cc, switch, ret
2491 BasicBlock : InstructionList OptLocalAssign BBTerminatorInst {
2492 setValueName($3, $2);
2495 $1->getInstList().push_back($3);
2500 InstructionList : InstructionList Inst {
2501 if (CastInst *CI1 = dyn_cast<CastInst>($2))
2502 if (CastInst *CI2 = dyn_cast<CastInst>(CI1->getOperand(0)))
2503 if (CI2->getParent() == 0)
2504 $1->getInstList().push_back(CI2);
2505 $1->getInstList().push_back($2);
2509 | /* empty */ { // Empty space between instruction lists
2510 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum));
2513 | LABELSTR { // Labelled (named) basic block
2514 $$ = defineBBVal(ValID::createLocalName(*$1));
2520 BBTerminatorInst : RET ResolvedVal { // Return with a result...
2521 $$ = new ReturnInst($2);
2524 | RET VOID { // Return with no result...
2525 $$ = new ReturnInst();
2528 | BR LABEL ValueRef { // Unconditional Branch...
2529 BasicBlock* tmpBB = getBBVal($3);
2531 $$ = new BranchInst(tmpBB);
2532 } // Conditional Branch...
2533 | BR INTTYPE ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2534 assert(cast<IntegerType>($2)->getBitWidth() == 1 && "Not Bool?");
2535 BasicBlock* tmpBBA = getBBVal($6);
2537 BasicBlock* tmpBBB = getBBVal($9);
2539 Value* tmpVal = getVal(Type::Int1Ty, $3);
2541 $$ = new BranchInst(tmpBBA, tmpBBB, tmpVal);
2543 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2544 Value* tmpVal = getVal($2, $3);
2546 BasicBlock* tmpBB = getBBVal($6);
2548 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, $8->size());
2551 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2553 for (; I != E; ++I) {
2554 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2555 S->addCase(CI, I->second);
2557 GEN_ERROR("Switch case is constant, but not a simple integer");
2562 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2563 Value* tmpVal = getVal($2, $3);
2565 BasicBlock* tmpBB = getBBVal($6);
2567 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, 0);
2571 | INVOKE OptCallingConv ResultTypes ValueRef '(' ValueRefList ')' OptFuncAttrs
2572 TO LABEL ValueRef UNWIND LABEL ValueRef {
2574 // Handle the short syntax
2575 const PointerType *PFTy = 0;
2576 const FunctionType *Ty = 0;
2577 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2578 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2579 // Pull out the types of all of the arguments...
2580 std::vector<const Type*> ParamTypes;
2581 ParamAttrsVector Attrs;
2582 if ($8 != ParamAttr::None) {
2583 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $8;
2584 Attrs.push_back(PAWI);
2586 ValueRefList::iterator I = $6->begin(), E = $6->end();
2588 for (; I != E; ++I, ++index) {
2589 const Type *Ty = I->Val->getType();
2590 if (Ty == Type::VoidTy)
2591 GEN_ERROR("Short call syntax cannot be used with varargs");
2592 ParamTypes.push_back(Ty);
2593 if (I->Attrs != ParamAttr::None) {
2594 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2595 Attrs.push_back(PAWI);
2599 ParamAttrsList *PAL = 0;
2601 PAL = ParamAttrsList::get(Attrs);
2602 Ty = FunctionType::get($3->get(), ParamTypes, false, PAL);
2603 PFTy = PointerType::get(Ty);
2608 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2610 BasicBlock *Normal = getBBVal($11);
2612 BasicBlock *Except = getBBVal($14);
2615 // Check the arguments
2617 if ($6->empty()) { // Has no arguments?
2618 // Make sure no arguments is a good thing!
2619 if (Ty->getNumParams() != 0)
2620 GEN_ERROR("No arguments passed to a function that "
2621 "expects arguments");
2622 } else { // Has arguments?
2623 // Loop through FunctionType's arguments and ensure they are specified
2625 FunctionType::param_iterator I = Ty->param_begin();
2626 FunctionType::param_iterator E = Ty->param_end();
2627 ValueRefList::iterator ArgI = $6->begin(), ArgE = $6->end();
2629 for (; ArgI != ArgE && I != E; ++ArgI, ++I) {
2630 if (ArgI->Val->getType() != *I)
2631 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2632 (*I)->getDescription() + "'");
2633 Args.push_back(ArgI->Val);
2636 if (Ty->isVarArg()) {
2638 for (; ArgI != ArgE; ++ArgI)
2639 Args.push_back(ArgI->Val); // push the remaining varargs
2640 } else if (I != E || ArgI != ArgE)
2641 GEN_ERROR("Invalid number of parameters detected");
2644 // Create the InvokeInst
2645 InvokeInst *II = new InvokeInst(V, Normal, Except, &Args[0], Args.size());
2646 II->setCallingConv($2);
2652 $$ = new UnwindInst();
2656 $$ = new UnreachableInst();
2662 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2664 Constant *V = cast<Constant>(getExistingVal($2, $3));
2667 GEN_ERROR("May only switch on a constant pool value");
2669 BasicBlock* tmpBB = getBBVal($6);
2671 $$->push_back(std::make_pair(V, tmpBB));
2673 | IntType ConstValueRef ',' LABEL ValueRef {
2674 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2675 Constant *V = cast<Constant>(getExistingVal($1, $2));
2679 GEN_ERROR("May only switch on a constant pool value");
2681 BasicBlock* tmpBB = getBBVal($5);
2683 $$->push_back(std::make_pair(V, tmpBB));
2686 Inst : OptLocalAssign InstVal {
2687 // Is this definition named?? if so, assign the name...
2688 setValueName($2, $1);
2696 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2697 if (!UpRefs.empty())
2698 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2699 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2700 Value* tmpVal = getVal(*$1, $3);
2702 BasicBlock* tmpBB = getBBVal($5);
2704 $$->push_back(std::make_pair(tmpVal, tmpBB));
2707 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2709 Value* tmpVal = getVal($1->front().first->getType(), $4);
2711 BasicBlock* tmpBB = getBBVal($6);
2713 $1->push_back(std::make_pair(tmpVal, tmpBB));
2717 ValueRefList : Types ValueRef OptParamAttrs {
2718 if (!UpRefs.empty())
2719 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2720 // Used for call and invoke instructions
2721 $$ = new ValueRefList();
2722 ValueRefListEntry E; E.Attrs = $3; E.Val = getVal($1->get(), $2);
2726 | ValueRefList ',' Types ValueRef OptParamAttrs {
2727 if (!UpRefs.empty())
2728 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2730 ValueRefListEntry E; E.Attrs = $5; E.Val = getVal($3->get(), $4);
2735 | /*empty*/ { $$ = new ValueRefList(); };
2737 IndexList // Used for gep instructions and constant expressions
2738 : /*empty*/ { $$ = new std::vector<Value*>(); }
2739 | IndexList ',' ResolvedVal {
2746 OptTailCall : TAIL CALL {
2755 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2756 if (!UpRefs.empty())
2757 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2758 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2759 !isa<VectorType>((*$2).get()))
2761 "Arithmetic operator requires integer, FP, or packed operands");
2762 if (isa<VectorType>((*$2).get()) &&
2763 ($1 == Instruction::URem ||
2764 $1 == Instruction::SRem ||
2765 $1 == Instruction::FRem))
2766 GEN_ERROR("Remainder not supported on vector types");
2767 Value* val1 = getVal(*$2, $3);
2769 Value* val2 = getVal(*$2, $5);
2771 $$ = BinaryOperator::create($1, val1, val2);
2773 GEN_ERROR("binary operator returned null");
2776 | LogicalOps Types ValueRef ',' ValueRef {
2777 if (!UpRefs.empty())
2778 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2779 if (!(*$2)->isInteger()) {
2780 if (Instruction::isShift($1) || !isa<VectorType>($2->get()) ||
2781 !cast<VectorType>($2->get())->getElementType()->isInteger())
2782 GEN_ERROR("Logical operator requires integral operands");
2784 Value* tmpVal1 = getVal(*$2, $3);
2786 Value* tmpVal2 = getVal(*$2, $5);
2788 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2790 GEN_ERROR("binary operator returned null");
2793 | ICMP IPredicates Types ValueRef ',' ValueRef {
2794 if (!UpRefs.empty())
2795 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2796 if (isa<VectorType>((*$3).get()))
2797 GEN_ERROR("Vector types not supported by icmp instruction");
2798 Value* tmpVal1 = getVal(*$3, $4);
2800 Value* tmpVal2 = getVal(*$3, $6);
2802 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2804 GEN_ERROR("icmp operator returned null");
2807 | FCMP FPredicates Types ValueRef ',' ValueRef {
2808 if (!UpRefs.empty())
2809 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2810 if (isa<VectorType>((*$3).get()))
2811 GEN_ERROR("Vector types not supported by fcmp instruction");
2812 Value* tmpVal1 = getVal(*$3, $4);
2814 Value* tmpVal2 = getVal(*$3, $6);
2816 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2818 GEN_ERROR("fcmp operator returned null");
2821 | CastOps ResolvedVal TO Types {
2822 if (!UpRefs.empty())
2823 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2825 const Type* DestTy = $4->get();
2826 if (!CastInst::castIsValid($1, Val, DestTy))
2827 GEN_ERROR("invalid cast opcode for cast from '" +
2828 Val->getType()->getDescription() + "' to '" +
2829 DestTy->getDescription() + "'");
2830 $$ = CastInst::create($1, Val, DestTy);
2833 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2834 if ($2->getType() != Type::Int1Ty)
2835 GEN_ERROR("select condition must be boolean");
2836 if ($4->getType() != $6->getType())
2837 GEN_ERROR("select value types should match");
2838 $$ = new SelectInst($2, $4, $6);
2841 | VAARG ResolvedVal ',' Types {
2842 if (!UpRefs.empty())
2843 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2844 $$ = new VAArgInst($2, *$4);
2848 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2849 if (!ExtractElementInst::isValidOperands($2, $4))
2850 GEN_ERROR("Invalid extractelement operands");
2851 $$ = new ExtractElementInst($2, $4);
2854 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2855 if (!InsertElementInst::isValidOperands($2, $4, $6))
2856 GEN_ERROR("Invalid insertelement operands");
2857 $$ = new InsertElementInst($2, $4, $6);
2860 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2861 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2862 GEN_ERROR("Invalid shufflevector operands");
2863 $$ = new ShuffleVectorInst($2, $4, $6);
2867 const Type *Ty = $2->front().first->getType();
2868 if (!Ty->isFirstClassType())
2869 GEN_ERROR("PHI node operands must be of first class type");
2870 $$ = new PHINode(Ty);
2871 ((PHINode*)$$)->reserveOperandSpace($2->size());
2872 while ($2->begin() != $2->end()) {
2873 if ($2->front().first->getType() != Ty)
2874 GEN_ERROR("All elements of a PHI node must be of the same type");
2875 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2878 delete $2; // Free the list...
2881 | OptTailCall OptCallingConv ResultTypes ValueRef '(' ValueRefList ')'
2884 // Handle the short syntax
2885 const PointerType *PFTy = 0;
2886 const FunctionType *Ty = 0;
2887 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2888 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2889 // Pull out the types of all of the arguments...
2890 std::vector<const Type*> ParamTypes;
2891 ParamAttrsVector Attrs;
2892 if ($8 != ParamAttr::None) {
2893 ParamAttrsWithIndex PAWI; PAWI.index = 0; PAWI.attrs = $8;
2894 Attrs.push_back(PAWI);
2897 ValueRefList::iterator I = $6->begin(), E = $6->end();
2898 for (; I != E; ++I, ++index) {
2899 const Type *Ty = I->Val->getType();
2900 if (Ty == Type::VoidTy)
2901 GEN_ERROR("Short call syntax cannot be used with varargs");
2902 ParamTypes.push_back(Ty);
2903 if (I->Attrs != ParamAttr::None) {
2904 ParamAttrsWithIndex PAWI; PAWI.index = index; PAWI.attrs = I->Attrs;
2905 Attrs.push_back(PAWI);
2909 ParamAttrsList *PAL = 0;
2911 PAL = ParamAttrsList::get(Attrs);
2913 Ty = FunctionType::get($3->get(), ParamTypes, false, PAL);
2914 PFTy = PointerType::get(Ty);
2917 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2920 // Check for call to invalid intrinsic to avoid crashing later.
2921 if (Function *theF = dyn_cast<Function>(V)) {
2922 if (theF->hasName() && (theF->getValueName()->getKeyLength() >= 5) &&
2923 (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
2924 !theF->getIntrinsicID(true))
2925 GEN_ERROR("Call to invalid LLVM intrinsic function '" +
2926 theF->getName() + "'");
2929 // Check the arguments
2931 if ($6->empty()) { // Has no arguments?
2932 // Make sure no arguments is a good thing!
2933 if (Ty->getNumParams() != 0)
2934 GEN_ERROR("No arguments passed to a function that "
2935 "expects arguments");
2936 } else { // Has arguments?
2937 // Loop through FunctionType's arguments and ensure they are specified
2940 FunctionType::param_iterator I = Ty->param_begin();
2941 FunctionType::param_iterator E = Ty->param_end();
2942 ValueRefList::iterator ArgI = $6->begin(), ArgE = $6->end();
2944 for (; ArgI != ArgE && I != E; ++ArgI, ++I) {
2945 if (ArgI->Val->getType() != *I)
2946 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2947 (*I)->getDescription() + "'");
2948 Args.push_back(ArgI->Val);
2950 if (Ty->isVarArg()) {
2952 for (; ArgI != ArgE; ++ArgI)
2953 Args.push_back(ArgI->Val); // push the remaining varargs
2954 } else if (I != E || ArgI != ArgE)
2955 GEN_ERROR("Invalid number of parameters detected");
2957 // Create the call node
2958 CallInst *CI = new CallInst(V, &Args[0], Args.size());
2959 CI->setTailCall($1);
2960 CI->setCallingConv($2);
2971 OptVolatile : VOLATILE {
2982 MemoryInst : MALLOC Types OptCAlign {
2983 if (!UpRefs.empty())
2984 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2985 $$ = new MallocInst(*$2, 0, $3);
2989 | MALLOC Types ',' INTTYPE ValueRef OptCAlign {
2990 if (!UpRefs.empty())
2991 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2992 Value* tmpVal = getVal($4, $5);
2994 $$ = new MallocInst(*$2, tmpVal, $6);
2997 | ALLOCA Types OptCAlign {
2998 if (!UpRefs.empty())
2999 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3000 $$ = new AllocaInst(*$2, 0, $3);
3004 | ALLOCA Types ',' INTTYPE ValueRef OptCAlign {
3005 if (!UpRefs.empty())
3006 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3007 Value* tmpVal = getVal($4, $5);
3009 $$ = new AllocaInst(*$2, tmpVal, $6);
3012 | FREE ResolvedVal {
3013 if (!isa<PointerType>($2->getType()))
3014 GEN_ERROR("Trying to free nonpointer type " +
3015 $2->getType()->getDescription() + "");
3016 $$ = new FreeInst($2);
3020 | OptVolatile LOAD Types ValueRef OptCAlign {
3021 if (!UpRefs.empty())
3022 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
3023 if (!isa<PointerType>($3->get()))
3024 GEN_ERROR("Can't load from nonpointer type: " +
3025 (*$3)->getDescription());
3026 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
3027 GEN_ERROR("Can't load from pointer of non-first-class type: " +
3028 (*$3)->getDescription());
3029 Value* tmpVal = getVal(*$3, $4);
3031 $$ = new LoadInst(tmpVal, "", $1, $5);
3034 | OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
3035 if (!UpRefs.empty())
3036 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
3037 const PointerType *PT = dyn_cast<PointerType>($5->get());
3039 GEN_ERROR("Can't store to a nonpointer type: " +
3040 (*$5)->getDescription());
3041 const Type *ElTy = PT->getElementType();
3042 if (ElTy != $3->getType())
3043 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
3044 "' into space of type '" + ElTy->getDescription() + "'");
3046 Value* tmpVal = getVal(*$5, $6);
3048 $$ = new StoreInst($3, tmpVal, $1, $7);
3051 | GETELEMENTPTR Types ValueRef IndexList {
3052 if (!UpRefs.empty())
3053 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3054 if (!isa<PointerType>($2->get()))
3055 GEN_ERROR("getelementptr insn requires pointer operand");
3057 if (!GetElementPtrInst::getIndexedType(*$2, &(*$4)[0], $4->size(), true))
3058 GEN_ERROR("Invalid getelementptr indices for type '" +
3059 (*$2)->getDescription()+ "'");
3060 Value* tmpVal = getVal(*$2, $3);
3062 $$ = new GetElementPtrInst(tmpVal, &(*$4)[0], $4->size());
3070 // common code from the two 'RunVMAsmParser' functions
3071 static Module* RunParser(Module * M) {
3073 llvmAsmlineno = 1; // Reset the current line number...
3074 CurModule.CurrentModule = M;
3079 // Check to make sure the parser succeeded
3082 delete ParserResult;
3086 // Emit an error if there are any unresolved types left.
3087 if (!CurModule.LateResolveTypes.empty()) {
3088 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
3089 if (DID.Type == ValID::LocalName) {
3090 GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
3092 GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
3095 delete ParserResult;
3099 // Emit an error if there are any unresolved values left.
3100 if (!CurModule.LateResolveValues.empty()) {
3101 Value *V = CurModule.LateResolveValues.back();
3102 std::map<Value*, std::pair<ValID, int> >::iterator I =
3103 CurModule.PlaceHolderInfo.find(V);
3105 if (I != CurModule.PlaceHolderInfo.end()) {
3106 ValID &DID = I->second.first;
3107 if (DID.Type == ValID::LocalName) {
3108 GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
3110 GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
3113 delete ParserResult;
3118 // Check to make sure that parsing produced a result
3122 // Reset ParserResult variable while saving its value for the result.
3123 Module *Result = ParserResult;
3129 void llvm::GenerateError(const std::string &message, int LineNo) {
3130 if (LineNo == -1) LineNo = llvmAsmlineno;
3131 // TODO: column number in exception
3133 TheParseError->setError(CurFilename, message, LineNo);
3137 int yyerror(const char *ErrorMsg) {
3139 = std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
3140 + ":" + utostr((unsigned) llvmAsmlineno) + ": ";
3141 std::string errMsg = where + "error: " + std::string(ErrorMsg);
3142 if (yychar != YYEMPTY && yychar != 0)
3143 errMsg += " while reading token: '" + std::string(llvmAsmtext, llvmAsmleng)+
3145 GenerateError(errMsg);