1 //===-- llvmAsmParser.y - Parser for llvm assembly files --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the bison parser for LLVM assembly languages files.
12 //===----------------------------------------------------------------------===//
15 #include "ParserInternals.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/InlineAsm.h"
18 #include "llvm/Instructions.h"
19 #include "llvm/Module.h"
20 #include "llvm/ValueSymbolTable.h"
21 #include "llvm/AutoUpgrade.h"
22 #include "llvm/Support/GetElementPtrTypeIterator.h"
23 #include "llvm/Support/CommandLine.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/STLExtras.h"
26 #include "llvm/Support/MathExtras.h"
27 #include "llvm/Support/Streams.h"
33 // The following is a gross hack. In order to rid the libAsmParser library of
34 // exceptions, we have to have a way of getting the yyparse function to go into
35 // an error situation. So, whenever we want an error to occur, the GenerateError
36 // function (see bottom of file) sets TriggerError. Then, at the end of each
37 // production in the grammer we use CHECK_FOR_ERROR which will invoke YYERROR
38 // (a goto) to put YACC in error state. Furthermore, several calls to
39 // GenerateError are made from inside productions and they must simulate the
40 // previous exception behavior by exiting the production immediately. We have
41 // replaced these with the GEN_ERROR macro which calls GeneratError and then
42 // immediately invokes YYERROR. This would be so much cleaner if it was a
43 // recursive descent parser.
44 static bool TriggerError = false;
45 #define CHECK_FOR_ERROR { if (TriggerError) { TriggerError = false; YYABORT; } }
46 #define GEN_ERROR(msg) { GenerateError(msg); YYERROR; }
48 int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
49 int yylex(); // declaration" of xxx warnings.
53 static Module *ParserResult;
55 // DEBUG_UPREFS - Define this symbol if you want to enable debugging output
56 // relating to upreferences in the input stream.
58 //#define DEBUG_UPREFS 1
60 #define UR_OUT(X) cerr << X
65 #define YYERROR_VERBOSE 1
67 static GlobalVariable *CurGV;
70 // This contains info used when building the body of a function. It is
71 // destroyed when the function is completed.
73 typedef std::vector<Value *> ValueList; // Numbered defs
76 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers=0);
78 static struct PerModuleInfo {
79 Module *CurrentModule;
80 ValueList Values; // Module level numbered definitions
81 ValueList LateResolveValues;
82 std::vector<PATypeHolder> Types;
83 std::map<ValID, PATypeHolder> LateResolveTypes;
85 /// PlaceHolderInfo - When temporary placeholder objects are created, remember
86 /// how they were referenced and on which line of the input they came from so
87 /// that we can resolve them later and print error messages as appropriate.
88 std::map<Value*, std::pair<ValID, int> > PlaceHolderInfo;
90 // GlobalRefs - This maintains a mapping between <Type, ValID>'s and forward
91 // references to global values. Global values may be referenced before they
92 // are defined, and if so, the temporary object that they represent is held
93 // here. This is used for forward references of GlobalValues.
95 typedef std::map<std::pair<const PointerType *,
96 ValID>, GlobalValue*> GlobalRefsType;
97 GlobalRefsType GlobalRefs;
100 // If we could not resolve some functions at function compilation time
101 // (calls to functions before they are defined), resolve them now... Types
102 // are resolved when the constant pool has been completely parsed.
104 ResolveDefinitions(LateResolveValues);
108 // Check to make sure that all global value forward references have been
111 if (!GlobalRefs.empty()) {
112 std::string UndefinedReferences = "Unresolved global references exist:\n";
114 for (GlobalRefsType::iterator I = GlobalRefs.begin(), E =GlobalRefs.end();
116 UndefinedReferences += " " + I->first.first->getDescription() + " " +
117 I->first.second.getName() + "\n";
119 GenerateError(UndefinedReferences);
123 // Look for intrinsic functions and CallInst that need to be upgraded
124 for (Module::iterator FI = CurrentModule->begin(),
125 FE = CurrentModule->end(); FI != FE; )
126 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
128 Values.clear(); // Clear out function local definitions
133 // GetForwardRefForGlobal - Check to see if there is a forward reference
134 // for this global. If so, remove it from the GlobalRefs map and return it.
135 // If not, just return null.
136 GlobalValue *GetForwardRefForGlobal(const PointerType *PTy, ValID ID) {
137 // Check to see if there is a forward reference to this global variable...
138 // if there is, eliminate it and patch the reference to use the new def'n.
139 GlobalRefsType::iterator I = GlobalRefs.find(std::make_pair(PTy, ID));
140 GlobalValue *Ret = 0;
141 if (I != GlobalRefs.end()) {
148 bool TypeIsUnresolved(PATypeHolder* PATy) {
149 // If it isn't abstract, its resolved
150 const Type* Ty = PATy->get();
151 if (!Ty->isAbstract())
153 // Traverse the type looking for abstract types. If it isn't abstract then
154 // we don't need to traverse that leg of the type.
155 std::vector<const Type*> WorkList, SeenList;
156 WorkList.push_back(Ty);
157 while (!WorkList.empty()) {
158 const Type* Ty = WorkList.back();
159 SeenList.push_back(Ty);
161 if (const OpaqueType* OpTy = dyn_cast<OpaqueType>(Ty)) {
162 // Check to see if this is an unresolved type
163 std::map<ValID, PATypeHolder>::iterator I = LateResolveTypes.begin();
164 std::map<ValID, PATypeHolder>::iterator E = LateResolveTypes.end();
165 for ( ; I != E; ++I) {
166 if (I->second.get() == OpTy)
169 } else if (const SequentialType* SeqTy = dyn_cast<SequentialType>(Ty)) {
170 const Type* TheTy = SeqTy->getElementType();
171 if (TheTy->isAbstract() && TheTy != Ty) {
172 std::vector<const Type*>::iterator I = SeenList.begin(),
178 WorkList.push_back(TheTy);
180 } else if (const StructType* StrTy = dyn_cast<StructType>(Ty)) {
181 for (unsigned i = 0; i < StrTy->getNumElements(); ++i) {
182 const Type* TheTy = StrTy->getElementType(i);
183 if (TheTy->isAbstract() && TheTy != Ty) {
184 std::vector<const Type*>::iterator I = SeenList.begin(),
190 WorkList.push_back(TheTy);
199 static struct PerFunctionInfo {
200 Function *CurrentFunction; // Pointer to current function being created
202 ValueList Values; // Keep track of #'d definitions
204 ValueList LateResolveValues;
205 bool isDeclare; // Is this function a forward declararation?
206 GlobalValue::LinkageTypes Linkage; // Linkage for forward declaration.
207 GlobalValue::VisibilityTypes Visibility;
209 /// BBForwardRefs - When we see forward references to basic blocks, keep
210 /// track of them here.
211 std::map<ValID, BasicBlock*> BBForwardRefs;
213 inline PerFunctionInfo() {
216 Linkage = GlobalValue::ExternalLinkage;
217 Visibility = GlobalValue::DefaultVisibility;
220 inline void FunctionStart(Function *M) {
225 void FunctionDone() {
226 // Any forward referenced blocks left?
227 if (!BBForwardRefs.empty()) {
228 GenerateError("Undefined reference to label " +
229 BBForwardRefs.begin()->second->getName());
233 // Resolve all forward references now.
234 ResolveDefinitions(LateResolveValues, &CurModule.LateResolveValues);
236 Values.clear(); // Clear out function local definitions
237 BBForwardRefs.clear();
240 Linkage = GlobalValue::ExternalLinkage;
241 Visibility = GlobalValue::DefaultVisibility;
243 } CurFun; // Info for the current function...
245 static bool inFunctionScope() { return CurFun.CurrentFunction != 0; }
248 //===----------------------------------------------------------------------===//
249 // Code to handle definitions of all the types
250 //===----------------------------------------------------------------------===//
252 static void InsertValue(Value *V, ValueList &ValueTab = CurFun.Values) {
253 // Things that have names or are void typed don't get slot numbers
254 if (V->hasName() || (V->getType() == Type::VoidTy))
257 // In the case of function values, we have to allow for the forward reference
258 // of basic blocks, which are included in the numbering. Consequently, we keep
259 // track of the next insertion location with NextValNum. When a BB gets
260 // inserted, it could change the size of the CurFun.Values vector.
261 if (&ValueTab == &CurFun.Values) {
262 if (ValueTab.size() <= CurFun.NextValNum)
263 ValueTab.resize(CurFun.NextValNum+1);
264 ValueTab[CurFun.NextValNum++] = V;
267 // For all other lists, its okay to just tack it on the back of the vector.
268 ValueTab.push_back(V);
271 static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
273 case ValID::LocalID: // Is it a numbered definition?
274 // Module constants occupy the lowest numbered slots...
275 if (D.Num < CurModule.Types.size())
276 return CurModule.Types[D.Num];
278 case ValID::LocalName: // Is it a named definition?
279 if (const Type *N = CurModule.CurrentModule->getTypeByName(D.getName())) {
280 D.destroy(); // Free old strdup'd memory...
285 GenerateError("Internal parser error: Invalid symbol type reference");
289 // If we reached here, we referenced either a symbol that we don't know about
290 // or an id number that hasn't been read yet. We may be referencing something
291 // forward, so just create an entry to be resolved later and get to it...
293 if (DoNotImprovise) return 0; // Do we just want a null to be returned?
296 if (inFunctionScope()) {
297 if (D.Type == ValID::LocalName) {
298 GenerateError("Reference to an undefined type: '" + D.getName() + "'");
301 GenerateError("Reference to an undefined type: #" + utostr(D.Num));
306 std::map<ValID, PATypeHolder>::iterator I =CurModule.LateResolveTypes.find(D);
307 if (I != CurModule.LateResolveTypes.end())
310 Type *Typ = OpaqueType::get();
311 CurModule.LateResolveTypes.insert(std::make_pair(D, Typ));
315 // getExistingVal - Look up the value specified by the provided type and
316 // the provided ValID. If the value exists and has already been defined, return
317 // it. Otherwise return null.
319 static Value *getExistingVal(const Type *Ty, const ValID &D) {
320 if (isa<FunctionType>(Ty)) {
321 GenerateError("Functions are not values and "
322 "must be referenced as pointers");
327 case ValID::LocalID: { // Is it a numbered definition?
328 // Check that the number is within bounds.
329 if (D.Num >= CurFun.Values.size())
331 Value *Result = CurFun.Values[D.Num];
332 if (Ty != Result->getType()) {
333 GenerateError("Numbered value (%" + utostr(D.Num) + ") of type '" +
334 Result->getType()->getDescription() + "' does not match "
335 "expected type, '" + Ty->getDescription() + "'");
340 case ValID::GlobalID: { // Is it a numbered definition?
341 if (D.Num >= CurModule.Values.size())
343 Value *Result = CurModule.Values[D.Num];
344 if (Ty != Result->getType()) {
345 GenerateError("Numbered value (@" + utostr(D.Num) + ") of type '" +
346 Result->getType()->getDescription() + "' does not match "
347 "expected type, '" + Ty->getDescription() + "'");
353 case ValID::LocalName: { // Is it a named definition?
354 if (!inFunctionScope())
356 ValueSymbolTable &SymTab = CurFun.CurrentFunction->getValueSymbolTable();
357 Value *N = SymTab.lookup(D.getName());
360 if (N->getType() != Ty)
363 D.destroy(); // Free old strdup'd memory...
366 case ValID::GlobalName: { // Is it a named definition?
367 ValueSymbolTable &SymTab = CurModule.CurrentModule->getValueSymbolTable();
368 Value *N = SymTab.lookup(D.getName());
371 if (N->getType() != Ty)
374 D.destroy(); // Free old strdup'd memory...
378 // Check to make sure that "Ty" is an integral type, and that our
379 // value will fit into the specified type...
380 case ValID::ConstSIntVal: // Is it a constant pool reference??
381 if (!isa<IntegerType>(Ty) ||
382 !ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
383 GenerateError("Signed integral constant '" +
384 itostr(D.ConstPool64) + "' is invalid for type '" +
385 Ty->getDescription() + "'");
388 return ConstantInt::get(Ty, D.ConstPool64, true);
390 case ValID::ConstUIntVal: // Is it an unsigned const pool reference?
391 if (isa<IntegerType>(Ty) &&
392 ConstantInt::isValueValidForType(Ty, D.UConstPool64))
393 return ConstantInt::get(Ty, D.UConstPool64);
395 if (!isa<IntegerType>(Ty) ||
396 !ConstantInt::isValueValidForType(Ty, D.ConstPool64)) {
397 GenerateError("Integral constant '" + utostr(D.UConstPool64) +
398 "' is invalid or out of range for type '" +
399 Ty->getDescription() + "'");
402 // This is really a signed reference. Transmogrify.
403 return ConstantInt::get(Ty, D.ConstPool64, true);
405 case ValID::ConstFPVal: // Is it a floating point const pool reference?
406 if (!Ty->isFloatingPoint() ||
407 !ConstantFP::isValueValidForType(Ty, *D.ConstPoolFP)) {
408 GenerateError("FP constant invalid for type");
411 // Lexer has no type info, so builds all float and double FP constants
412 // as double. Fix this here. Long double does not need this.
413 if (&D.ConstPoolFP->getSemantics() == &APFloat::IEEEdouble &&
415 D.ConstPoolFP->convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven);
416 return ConstantFP::get(*D.ConstPoolFP);
418 case ValID::ConstNullVal: // Is it a null value?
419 if (!isa<PointerType>(Ty)) {
420 GenerateError("Cannot create a a non pointer null");
423 return ConstantPointerNull::get(cast<PointerType>(Ty));
425 case ValID::ConstUndefVal: // Is it an undef value?
426 return UndefValue::get(Ty);
428 case ValID::ConstZeroVal: // Is it a zero value?
429 return Constant::getNullValue(Ty);
431 case ValID::ConstantVal: // Fully resolved constant?
432 if (D.ConstantValue->getType() != Ty) {
433 GenerateError("Constant expression type different from required type");
436 return D.ConstantValue;
438 case ValID::InlineAsmVal: { // Inline asm expression
439 const PointerType *PTy = dyn_cast<PointerType>(Ty);
440 const FunctionType *FTy =
441 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
442 if (!FTy || !InlineAsm::Verify(FTy, D.IAD->Constraints)) {
443 GenerateError("Invalid type for asm constraint string");
446 InlineAsm *IA = InlineAsm::get(FTy, D.IAD->AsmString, D.IAD->Constraints,
447 D.IAD->HasSideEffects);
448 D.destroy(); // Free InlineAsmDescriptor.
452 assert(0 && "Unhandled case!");
456 assert(0 && "Unhandled case!");
460 // getVal - This function is identical to getExistingVal, except that if a
461 // value is not already defined, it "improvises" by creating a placeholder var
462 // that looks and acts just like the requested variable. When the value is
463 // defined later, all uses of the placeholder variable are replaced with the
466 static Value *getVal(const Type *Ty, const ValID &ID) {
467 if (Ty == Type::LabelTy) {
468 GenerateError("Cannot use a basic block here");
472 // See if the value has already been defined.
473 Value *V = getExistingVal(Ty, ID);
475 if (TriggerError) return 0;
477 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty)) {
478 GenerateError("Invalid use of a composite type");
482 // If we reached here, we referenced either a symbol that we don't know about
483 // or an id number that hasn't been read yet. We may be referencing something
484 // forward, so just create an entry to be resolved later and get to it...
487 case ValID::GlobalName:
488 case ValID::GlobalID: {
489 const PointerType *PTy = dyn_cast<PointerType>(Ty);
491 GenerateError("Invalid type for reference to global" );
494 const Type* ElTy = PTy->getElementType();
495 if (const FunctionType *FTy = dyn_cast<FunctionType>(ElTy))
496 V = Function::Create(FTy, GlobalValue::ExternalLinkage);
498 V = new GlobalVariable(ElTy, false, GlobalValue::ExternalLinkage, 0, "",
499 (Module*)0, false, PTy->getAddressSpace());
503 V = new Argument(Ty);
506 // Remember where this forward reference came from. FIXME, shouldn't we try
507 // to recycle these things??
508 CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
511 if (inFunctionScope())
512 InsertValue(V, CurFun.LateResolveValues);
514 InsertValue(V, CurModule.LateResolveValues);
518 /// defineBBVal - This is a definition of a new basic block with the specified
519 /// identifier which must be the same as CurFun.NextValNum, if its numeric.
520 static BasicBlock *defineBBVal(const ValID &ID, BasicBlock *unwindDest) {
521 assert(inFunctionScope() && "Can't get basic block at global scope!");
525 // First, see if this was forward referenced
527 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
528 if (BBI != CurFun.BBForwardRefs.end()) {
530 // The forward declaration could have been inserted anywhere in the
531 // function: insert it into the correct place now.
532 CurFun.CurrentFunction->getBasicBlockList().remove(BB);
533 CurFun.CurrentFunction->getBasicBlockList().push_back(BB);
535 // We're about to erase the entry, save the key so we can clean it up.
536 ValID Tmp = BBI->first;
538 // Erase the forward ref from the map as its no longer "forward"
539 CurFun.BBForwardRefs.erase(ID);
541 // The key has been removed from the map but so we don't want to leave
542 // strdup'd memory around so destroy it too.
545 // If its a numbered definition, bump the number and set the BB value.
546 if (ID.Type == ValID::LocalID) {
547 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 = BasicBlock::Create(Name, CurFun.CurrentFunction);
555 if (ID.Type == ValID::LocalID) {
556 assert(ID.Num == CurFun.NextValNum && "Invalid new block number");
562 BB->setUnwindDest(unwindDest);
566 /// getBBVal - get an existing BB value or create a forward reference for it.
568 static BasicBlock *getBBVal(const ValID &ID) {
569 assert(inFunctionScope() && "Can't get basic block at global scope!");
573 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
574 if (BBI != CurFun.BBForwardRefs.end()) {
576 } if (ID.Type == ValID::LocalName) {
577 std::string Name = ID.getName();
578 Value *N = CurFun.CurrentFunction->getValueSymbolTable().lookup(Name);
580 if (N->getType()->getTypeID() == Type::LabelTyID)
581 BB = cast<BasicBlock>(N);
583 GenerateError("Reference to label '" + Name + "' is actually of type '"+
584 N->getType()->getDescription() + "'");
586 } else if (ID.Type == ValID::LocalID) {
587 if (ID.Num < CurFun.NextValNum && ID.Num < CurFun.Values.size()) {
588 if (CurFun.Values[ID.Num]->getType()->getTypeID() == Type::LabelTyID)
589 BB = cast<BasicBlock>(CurFun.Values[ID.Num]);
591 GenerateError("Reference to label '%" + utostr(ID.Num) +
592 "' is actually of type '"+
593 CurFun.Values[ID.Num]->getType()->getDescription() + "'");
596 GenerateError("Illegal label reference " + ID.getName());
600 // If its already been defined, return it now.
602 ID.destroy(); // Free strdup'd memory.
606 // Otherwise, this block has not been seen before, create it.
608 if (ID.Type == ValID::LocalName)
610 BB = BasicBlock::Create(Name, CurFun.CurrentFunction);
612 // Insert it in the forward refs map.
613 CurFun.BBForwardRefs[ID] = BB;
619 //===----------------------------------------------------------------------===//
620 // Code to handle forward references in instructions
621 //===----------------------------------------------------------------------===//
623 // This code handles the late binding needed with statements that reference
624 // values not defined yet... for example, a forward branch, or the PHI node for
627 // This keeps a table (CurFun.LateResolveValues) of all such forward references
628 // and back patchs after we are done.
631 // ResolveDefinitions - If we could not resolve some defs at parsing
632 // time (forward branches, phi functions for loops, etc...) resolve the
636 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers) {
637 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
638 while (!LateResolvers.empty()) {
639 Value *V = LateResolvers.back();
640 LateResolvers.pop_back();
642 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
643 CurModule.PlaceHolderInfo.find(V);
644 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
646 ValID &DID = PHI->second.first;
648 Value *TheRealValue = getExistingVal(V->getType(), DID);
652 V->replaceAllUsesWith(TheRealValue);
654 CurModule.PlaceHolderInfo.erase(PHI);
655 } else if (FutureLateResolvers) {
656 // Functions have their unresolved items forwarded to the module late
658 InsertValue(V, *FutureLateResolvers);
660 if (DID.Type == ValID::LocalName || DID.Type == ValID::GlobalName) {
661 GenerateError("Reference to an invalid definition: '" +DID.getName()+
662 "' of type '" + V->getType()->getDescription() + "'",
666 GenerateError("Reference to an invalid definition: #" +
667 itostr(DID.Num) + " of type '" +
668 V->getType()->getDescription() + "'",
674 LateResolvers.clear();
677 // ResolveTypeTo - A brand new type was just declared. This means that (if
678 // name is not null) things referencing Name can be resolved. Otherwise, things
679 // refering to the number can be resolved. Do this now.
681 static void ResolveTypeTo(std::string *Name, const Type *ToTy) {
684 D = ValID::createLocalName(*Name);
686 D = ValID::createLocalID(CurModule.Types.size());
688 std::map<ValID, PATypeHolder>::iterator I =
689 CurModule.LateResolveTypes.find(D);
690 if (I != CurModule.LateResolveTypes.end()) {
691 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
692 CurModule.LateResolveTypes.erase(I);
696 // setValueName - Set the specified value to the name given. The name may be
697 // null potentially, in which case this is a noop. The string passed in is
698 // assumed to be a malloc'd string buffer, and is free'd by this function.
700 static void setValueName(Value *V, std::string *NameStr) {
701 if (!NameStr) return;
702 std::string Name(*NameStr); // Copy string
703 delete NameStr; // Free old string
705 if (V->getType() == Type::VoidTy) {
706 GenerateError("Can't assign name '" + Name+"' to value with void type");
710 assert(inFunctionScope() && "Must be in function scope!");
711 ValueSymbolTable &ST = CurFun.CurrentFunction->getValueSymbolTable();
712 if (ST.lookup(Name)) {
713 GenerateError("Redefinition of value '" + Name + "' of type '" +
714 V->getType()->getDescription() + "'");
722 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
723 /// this is a declaration, otherwise it is a definition.
724 static GlobalVariable *
725 ParseGlobalVariable(std::string *NameStr,
726 GlobalValue::LinkageTypes Linkage,
727 GlobalValue::VisibilityTypes Visibility,
728 bool isConstantGlobal, const Type *Ty,
729 Constant *Initializer, bool IsThreadLocal,
730 unsigned AddressSpace = 0) {
731 if (isa<FunctionType>(Ty)) {
732 GenerateError("Cannot declare global vars of function type");
736 const PointerType *PTy = PointerType::get(Ty, AddressSpace);
740 Name = *NameStr; // Copy string
741 delete NameStr; // Free old string
744 // See if this global value was forward referenced. If so, recycle the
748 ID = ValID::createGlobalName(Name);
750 ID = ValID::createGlobalID(CurModule.Values.size());
753 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
754 // Move the global to the end of the list, from whereever it was
755 // previously inserted.
756 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
757 CurModule.CurrentModule->getGlobalList().remove(GV);
758 CurModule.CurrentModule->getGlobalList().push_back(GV);
759 GV->setInitializer(Initializer);
760 GV->setLinkage(Linkage);
761 GV->setVisibility(Visibility);
762 GV->setConstant(isConstantGlobal);
763 GV->setThreadLocal(IsThreadLocal);
764 InsertValue(GV, CurModule.Values);
768 // If this global has a name
770 // if the global we're parsing has an initializer (is a definition) and
771 // has external linkage.
772 if (Initializer && Linkage != GlobalValue::InternalLinkage)
773 // If there is already a global with external linkage with this name
774 if (CurModule.CurrentModule->getGlobalVariable(Name, false)) {
775 // If we allow this GVar to get created, it will be renamed in the
776 // symbol table because it conflicts with an existing GVar. We can't
777 // allow redefinition of GVars whose linking indicates that their name
778 // must stay the same. Issue the error.
779 GenerateError("Redefinition of global variable named '" + Name +
780 "' of type '" + Ty->getDescription() + "'");
785 // Otherwise there is no existing GV to use, create one now.
787 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
788 CurModule.CurrentModule, IsThreadLocal, AddressSpace);
789 GV->setVisibility(Visibility);
790 InsertValue(GV, CurModule.Values);
794 // setTypeName - Set the specified type to the name given. The name may be
795 // null potentially, in which case this is a noop. The string passed in is
796 // assumed to be a malloc'd string buffer, and is freed by this function.
798 // This function returns true if the type has already been defined, but is
799 // allowed to be redefined in the specified context. If the name is a new name
800 // for the type plane, it is inserted and false is returned.
801 static bool setTypeName(const Type *T, std::string *NameStr) {
802 assert(!inFunctionScope() && "Can't give types function-local names!");
803 if (NameStr == 0) return false;
805 std::string Name(*NameStr); // Copy string
806 delete NameStr; // Free old string
808 // We don't allow assigning names to void type
809 if (T == Type::VoidTy) {
810 GenerateError("Can't assign name '" + Name + "' to the void type");
814 // Set the type name, checking for conflicts as we do so.
815 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
817 if (AlreadyExists) { // Inserting a name that is already defined???
818 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
819 assert(Existing && "Conflict but no matching type?!");
821 // There is only one case where this is allowed: when we are refining an
822 // opaque type. In this case, Existing will be an opaque type.
823 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
824 // We ARE replacing an opaque type!
825 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
829 // Otherwise, this is an attempt to redefine a type. That's okay if
830 // the redefinition is identical to the original. This will be so if
831 // Existing and T point to the same Type object. In this one case we
832 // allow the equivalent redefinition.
833 if (Existing == T) return true; // Yes, it's equal.
835 // Any other kind of (non-equivalent) redefinition is an error.
836 GenerateError("Redefinition of type named '" + Name + "' of type '" +
837 T->getDescription() + "'");
843 //===----------------------------------------------------------------------===//
844 // Code for handling upreferences in type names...
847 // TypeContains - Returns true if Ty directly contains E in it.
849 static bool TypeContains(const Type *Ty, const Type *E) {
850 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
851 E) != Ty->subtype_end();
856 // NestingLevel - The number of nesting levels that need to be popped before
857 // this type is resolved.
858 unsigned NestingLevel;
860 // LastContainedTy - This is the type at the current binding level for the
861 // type. Every time we reduce the nesting level, this gets updated.
862 const Type *LastContainedTy;
864 // UpRefTy - This is the actual opaque type that the upreference is
868 UpRefRecord(unsigned NL, OpaqueType *URTy)
869 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
873 // UpRefs - A list of the outstanding upreferences that need to be resolved.
874 static std::vector<UpRefRecord> UpRefs;
876 /// HandleUpRefs - Every time we finish a new layer of types, this function is
877 /// called. It loops through the UpRefs vector, which is a list of the
878 /// currently active types. For each type, if the up reference is contained in
879 /// the newly completed type, we decrement the level count. When the level
880 /// count reaches zero, the upreferenced type is the type that is passed in:
881 /// thus we can complete the cycle.
883 static PATypeHolder HandleUpRefs(const Type *ty) {
884 // If Ty isn't abstract, or if there are no up-references in it, then there is
885 // nothing to resolve here.
886 if (!ty->isAbstract() || UpRefs.empty()) return ty;
889 UR_OUT("Type '" << Ty->getDescription() <<
890 "' newly formed. Resolving upreferences.\n" <<
891 UpRefs.size() << " upreferences active!\n");
893 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
894 // to zero), we resolve them all together before we resolve them to Ty. At
895 // the end of the loop, if there is anything to resolve to Ty, it will be in
897 OpaqueType *TypeToResolve = 0;
899 for (unsigned i = 0; i != UpRefs.size(); ++i) {
900 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
901 << UpRefs[i].second->getDescription() << ") = "
902 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
903 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
904 // Decrement level of upreference
905 unsigned Level = --UpRefs[i].NestingLevel;
906 UpRefs[i].LastContainedTy = Ty;
907 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
908 if (Level == 0) { // Upreference should be resolved!
909 if (!TypeToResolve) {
910 TypeToResolve = UpRefs[i].UpRefTy;
912 UR_OUT(" * Resolving upreference for "
913 << UpRefs[i].second->getDescription() << "\n";
914 std::string OldName = UpRefs[i].UpRefTy->getDescription());
915 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
916 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
917 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
919 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
920 --i; // Do not skip the next element...
926 UR_OUT(" * Resolving upreference for "
927 << UpRefs[i].second->getDescription() << "\n";
928 std::string OldName = TypeToResolve->getDescription());
929 TypeToResolve->refineAbstractTypeTo(Ty);
935 //===----------------------------------------------------------------------===//
936 // RunVMAsmParser - Define an interface to this parser
937 //===----------------------------------------------------------------------===//
939 static Module* RunParser(Module * M);
941 Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
943 Module *M = RunParser(new Module(LLLgetFilename()));
951 llvm::Module *ModuleVal;
952 llvm::Function *FunctionVal;
953 llvm::BasicBlock *BasicBlockVal;
954 llvm::TerminatorInst *TermInstVal;
955 llvm::Instruction *InstVal;
956 llvm::Constant *ConstVal;
958 const llvm::Type *PrimType;
959 std::list<llvm::PATypeHolder> *TypeList;
960 llvm::PATypeHolder *TypeVal;
961 llvm::Value *ValueVal;
962 std::vector<llvm::Value*> *ValueList;
963 llvm::ArgListType *ArgList;
964 llvm::TypeWithAttrs TypeWithAttrs;
965 llvm::TypeWithAttrsList *TypeWithAttrsList;
966 llvm::ParamList *ParamList;
968 // Represent the RHS of PHI node
969 std::list<std::pair<llvm::Value*,
970 llvm::BasicBlock*> > *PHIList;
971 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
972 std::vector<llvm::Constant*> *ConstVector;
974 llvm::GlobalValue::LinkageTypes Linkage;
975 llvm::GlobalValue::VisibilityTypes Visibility;
976 llvm::ParameterAttributes ParamAttrs;
977 llvm::APInt *APIntVal;
982 llvm::APFloat *FPVal;
985 std::string *StrVal; // This memory must be deleted
986 llvm::ValID ValIDVal;
988 llvm::Instruction::BinaryOps BinaryOpVal;
989 llvm::Instruction::TermOps TermOpVal;
990 llvm::Instruction::MemoryOps MemOpVal;
991 llvm::Instruction::CastOps CastOpVal;
992 llvm::Instruction::OtherOps OtherOpVal;
993 llvm::ICmpInst::Predicate IPredicate;
994 llvm::FCmpInst::Predicate FPredicate;
997 %type <ModuleVal> Module
998 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
999 %type <BasicBlockVal> BasicBlock InstructionList
1000 %type <TermInstVal> BBTerminatorInst
1001 %type <InstVal> Inst InstVal MemoryInst
1002 %type <ConstVal> ConstVal ConstExpr AliaseeRef
1003 %type <ConstVector> ConstVector
1004 %type <ArgList> ArgList ArgListH
1005 %type <PHIList> PHIList
1006 %type <ParamList> ParamList // For call param lists & GEP indices
1007 %type <ValueList> IndexList // For GEP indices
1008 %type <TypeList> TypeListI
1009 %type <TypeWithAttrsList> ArgTypeList ArgTypeListI
1010 %type <TypeWithAttrs> ArgType
1011 %type <JumpTable> JumpTable
1012 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
1013 %type <BoolVal> ThreadLocal // 'thread_local' or not
1014 %type <BoolVal> OptVolatile // 'volatile' or not
1015 %type <BoolVal> OptTailCall // TAIL CALL or plain CALL.
1016 %type <BoolVal> OptSideEffect // 'sideeffect' or not.
1017 %type <Linkage> GVInternalLinkage GVExternalLinkage
1018 %type <Linkage> FunctionDefineLinkage FunctionDeclareLinkage
1019 %type <Linkage> AliasLinkage
1020 %type <Visibility> GVVisibilityStyle
1022 // ValueRef - Unresolved reference to a definition or BB
1023 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
1024 %type <ValueVal> ResolvedVal // <type> <valref> pair
1025 %type <ValueList> ReturnedVal
1026 // Tokens and types for handling constant integer values
1028 // ESINT64VAL - A negative number within long long range
1029 %token <SInt64Val> ESINT64VAL
1031 // EUINT64VAL - A positive number within uns. long long range
1032 %token <UInt64Val> EUINT64VAL
1034 // ESAPINTVAL - A negative number with arbitrary precision
1035 %token <APIntVal> ESAPINTVAL
1037 // EUAPINTVAL - A positive number with arbitrary precision
1038 %token <APIntVal> EUAPINTVAL
1040 %token <UIntVal> LOCALVAL_ID GLOBALVAL_ID // %123 @123
1041 %token <FPVal> FPVAL // Float or Double constant
1043 // Built in types...
1044 %type <TypeVal> Types ResultTypes
1045 %type <PrimType> IntType FPType PrimType // Classifications
1046 %token <PrimType> VOID INTTYPE
1047 %token <PrimType> FLOAT DOUBLE X86_FP80 FP128 PPC_FP128 LABEL
1051 %token<StrVal> LOCALVAR GLOBALVAR LABELSTR
1052 %token<StrVal> STRINGCONSTANT ATSTRINGCONSTANT PCTSTRINGCONSTANT
1053 %type <StrVal> LocalName OptLocalName OptLocalAssign
1054 %type <StrVal> GlobalName OptGlobalAssign GlobalAssign
1055 %type <StrVal> OptSection SectionString OptGC
1057 %type <UIntVal> OptAlign OptCAlign OptAddrSpace
1059 %token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
1060 %token DECLARE DEFINE GLOBAL CONSTANT SECTION ALIAS VOLATILE THREAD_LOCAL
1061 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
1062 %token DLLIMPORT DLLEXPORT EXTERN_WEAK
1063 %token OPAQUE EXTERNAL TARGET TRIPLE ALIGN ADDRSPACE
1064 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
1065 %token CC_TOK CCC_TOK FASTCC_TOK COLDCC_TOK X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
1066 %token DATALAYOUT UNWINDS
1067 %type <UIntVal> OptCallingConv
1068 %type <ParamAttrs> OptParamAttrs ParamAttr
1069 %type <ParamAttrs> OptFuncAttrs FuncAttr
1071 // Basic Block Terminating Operators
1072 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
1075 %type <BinaryOpVal> ArithmeticOps LogicalOps // Binops Subcatagories
1076 %token <BinaryOpVal> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
1077 %token <BinaryOpVal> SHL LSHR ASHR
1079 %token <OtherOpVal> ICMP FCMP
1080 %type <IPredicate> IPredicates
1081 %type <FPredicate> FPredicates
1082 %token EQ NE SLT SGT SLE SGE ULT UGT ULE UGE
1083 %token OEQ ONE OLT OGT OLE OGE ORD UNO UEQ UNE
1085 // Memory Instructions
1086 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
1089 %type <CastOpVal> CastOps
1090 %token <CastOpVal> TRUNC ZEXT SEXT FPTRUNC FPEXT BITCAST
1091 %token <CastOpVal> UITOFP SITOFP FPTOUI FPTOSI INTTOPTR PTRTOINT
1094 %token <OtherOpVal> PHI_TOK SELECT VAARG
1095 %token <OtherOpVal> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
1096 %token <OtherOpVal> GETRESULT
1098 // Function Attributes
1099 %token SIGNEXT ZEROEXT NORETURN INREG SRET NOUNWIND NOALIAS BYVAL NEST
1100 %token READNONE READONLY GC
1102 // Visibility Styles
1103 %token DEFAULT HIDDEN PROTECTED
1109 // Operations that are notably excluded from this list include:
1110 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
1112 ArithmeticOps: ADD | SUB | MUL | UDIV | SDIV | FDIV | UREM | SREM | FREM;
1113 LogicalOps : SHL | LSHR | ASHR | AND | OR | XOR;
1114 CastOps : TRUNC | ZEXT | SEXT | FPTRUNC | FPEXT | BITCAST |
1115 UITOFP | SITOFP | FPTOUI | FPTOSI | INTTOPTR | PTRTOINT;
1118 : EQ { $$ = ICmpInst::ICMP_EQ; } | NE { $$ = ICmpInst::ICMP_NE; }
1119 | SLT { $$ = ICmpInst::ICMP_SLT; } | SGT { $$ = ICmpInst::ICMP_SGT; }
1120 | SLE { $$ = ICmpInst::ICMP_SLE; } | SGE { $$ = ICmpInst::ICMP_SGE; }
1121 | ULT { $$ = ICmpInst::ICMP_ULT; } | UGT { $$ = ICmpInst::ICMP_UGT; }
1122 | ULE { $$ = ICmpInst::ICMP_ULE; } | UGE { $$ = ICmpInst::ICMP_UGE; }
1126 : OEQ { $$ = FCmpInst::FCMP_OEQ; } | ONE { $$ = FCmpInst::FCMP_ONE; }
1127 | OLT { $$ = FCmpInst::FCMP_OLT; } | OGT { $$ = FCmpInst::FCMP_OGT; }
1128 | OLE { $$ = FCmpInst::FCMP_OLE; } | OGE { $$ = FCmpInst::FCMP_OGE; }
1129 | ORD { $$ = FCmpInst::FCMP_ORD; } | UNO { $$ = FCmpInst::FCMP_UNO; }
1130 | UEQ { $$ = FCmpInst::FCMP_UEQ; } | UNE { $$ = FCmpInst::FCMP_UNE; }
1131 | ULT { $$ = FCmpInst::FCMP_ULT; } | UGT { $$ = FCmpInst::FCMP_UGT; }
1132 | ULE { $$ = FCmpInst::FCMP_ULE; } | UGE { $$ = FCmpInst::FCMP_UGE; }
1133 | TRUETOK { $$ = FCmpInst::FCMP_TRUE; }
1134 | FALSETOK { $$ = FCmpInst::FCMP_FALSE; }
1137 // These are some types that allow classification if we only want a particular
1138 // thing... for example, only a signed, unsigned, or integral type.
1140 FPType : FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80;
1142 LocalName : LOCALVAR | STRINGCONSTANT | PCTSTRINGCONSTANT ;
1143 OptLocalName : LocalName | /*empty*/ { $$ = 0; };
1145 OptAddrSpace : ADDRSPACE '(' EUINT64VAL ')' { $$=$3; }
1146 | /*empty*/ { $$=0; };
1148 /// OptLocalAssign - Value producing statements have an optional assignment
1150 OptLocalAssign : LocalName '=' {
1159 GlobalName : GLOBALVAR | ATSTRINGCONSTANT ;
1161 OptGlobalAssign : GlobalAssign
1167 GlobalAssign : GlobalName '=' {
1173 : INTERNAL { $$ = GlobalValue::InternalLinkage; }
1174 | WEAK { $$ = GlobalValue::WeakLinkage; }
1175 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1176 | APPENDING { $$ = GlobalValue::AppendingLinkage; }
1177 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1181 : DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1182 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1183 | EXTERNAL { $$ = GlobalValue::ExternalLinkage; }
1187 : /*empty*/ { $$ = GlobalValue::DefaultVisibility; }
1188 | DEFAULT { $$ = GlobalValue::DefaultVisibility; }
1189 | HIDDEN { $$ = GlobalValue::HiddenVisibility; }
1190 | PROTECTED { $$ = GlobalValue::ProtectedVisibility; }
1193 FunctionDeclareLinkage
1194 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1195 | DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1196 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1199 FunctionDefineLinkage
1200 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1201 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1202 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1203 | WEAK { $$ = GlobalValue::WeakLinkage; }
1204 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1208 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1209 | WEAK { $$ = GlobalValue::WeakLinkage; }
1210 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1213 OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
1214 CCC_TOK { $$ = CallingConv::C; } |
1215 FASTCC_TOK { $$ = CallingConv::Fast; } |
1216 COLDCC_TOK { $$ = CallingConv::Cold; } |
1217 X86_STDCALLCC_TOK { $$ = CallingConv::X86_StdCall; } |
1218 X86_FASTCALLCC_TOK { $$ = CallingConv::X86_FastCall; } |
1220 if ((unsigned)$2 != $2)
1221 GEN_ERROR("Calling conv too large");
1226 ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; }
1227 | ZEXT { $$ = ParamAttr::ZExt; }
1228 | SIGNEXT { $$ = ParamAttr::SExt; }
1229 | SEXT { $$ = ParamAttr::SExt; }
1230 | INREG { $$ = ParamAttr::InReg; }
1231 | SRET { $$ = ParamAttr::StructRet; }
1232 | NOALIAS { $$ = ParamAttr::NoAlias; }
1233 | BYVAL { $$ = ParamAttr::ByVal; }
1234 | NEST { $$ = ParamAttr::Nest; }
1235 | ALIGN EUINT64VAL { $$ =
1236 ParamAttr::constructAlignmentFromInt($2); }
1239 OptParamAttrs : /* empty */ { $$ = ParamAttr::None; }
1240 | OptParamAttrs ParamAttr {
1245 FuncAttr : NORETURN { $$ = ParamAttr::NoReturn; }
1246 | NOUNWIND { $$ = ParamAttr::NoUnwind; }
1247 | ZEROEXT { $$ = ParamAttr::ZExt; }
1248 | SIGNEXT { $$ = ParamAttr::SExt; }
1249 | READNONE { $$ = ParamAttr::ReadNone; }
1250 | READONLY { $$ = ParamAttr::ReadOnly; }
1253 OptFuncAttrs : /* empty */ { $$ = ParamAttr::None; }
1254 | OptFuncAttrs FuncAttr {
1259 OptGC : /* empty */ { $$ = 0; }
1260 | GC STRINGCONSTANT {
1265 // OptAlign/OptCAlign - An optional alignment, and an optional alignment with
1266 // a comma before it.
1267 OptAlign : /*empty*/ { $$ = 0; } |
1270 if ($$ != 0 && !isPowerOf2_32($$))
1271 GEN_ERROR("Alignment must be a power of two");
1274 OptCAlign : /*empty*/ { $$ = 0; } |
1275 ',' ALIGN EUINT64VAL {
1277 if ($$ != 0 && !isPowerOf2_32($$))
1278 GEN_ERROR("Alignment must be a power of two");
1284 SectionString : SECTION STRINGCONSTANT {
1285 for (unsigned i = 0, e = $2->length(); i != e; ++i)
1286 if ((*$2)[i] == '"' || (*$2)[i] == '\\')
1287 GEN_ERROR("Invalid character in section name");
1292 OptSection : /*empty*/ { $$ = 0; } |
1293 SectionString { $$ = $1; };
1295 // GlobalVarAttributes - Used to pass the attributes string on a global. CurGV
1296 // is set to be the global we are processing.
1298 GlobalVarAttributes : /* empty */ {} |
1299 ',' GlobalVarAttribute GlobalVarAttributes {};
1300 GlobalVarAttribute : SectionString {
1301 CurGV->setSection(*$1);
1305 | ALIGN EUINT64VAL {
1306 if ($2 != 0 && !isPowerOf2_32($2))
1307 GEN_ERROR("Alignment must be a power of two");
1308 CurGV->setAlignment($2);
1312 //===----------------------------------------------------------------------===//
1313 // Types includes all predefined types... except void, because it can only be
1314 // used in specific contexts (function returning void for example).
1316 // Derived types are added later...
1318 PrimType : INTTYPE | FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80 | LABEL ;
1322 $$ = new PATypeHolder(OpaqueType::get());
1326 $$ = new PATypeHolder($1);
1329 | Types OptAddrSpace '*' { // Pointer type?
1330 if (*$1 == Type::LabelTy)
1331 GEN_ERROR("Cannot form a pointer to a basic block");
1332 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1, $2)));
1336 | SymbolicValueRef { // Named types are also simple types...
1337 const Type* tmp = getTypeVal($1);
1339 $$ = new PATypeHolder(tmp);
1341 | '\\' EUINT64VAL { // Type UpReference
1342 if ($2 > (uint64_t)~0U) GEN_ERROR("Value out of range");
1343 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1344 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1345 $$ = new PATypeHolder(OT);
1346 UR_OUT("New Upreference!\n");
1349 | Types '(' ArgTypeListI ')' OptFuncAttrs {
1350 // Allow but ignore attributes on function types; this permits auto-upgrade.
1351 // FIXME: remove in LLVM 3.0.
1352 const Type *RetTy = *$1;
1353 if (!FunctionType::isValidReturnType(RetTy))
1354 GEN_ERROR("Invalid result type for LLVM function");
1356 std::vector<const Type*> Params;
1357 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1358 for (; I != E; ++I ) {
1359 const Type *Ty = I->Ty->get();
1360 Params.push_back(Ty);
1363 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1364 if (isVarArg) Params.pop_back();
1366 for (unsigned i = 0; i != Params.size(); ++i)
1367 if (!(Params[i]->isFirstClassType() || isa<OpaqueType>(Params[i])))
1368 GEN_ERROR("Function arguments must be value types!");
1372 FunctionType *FT = FunctionType::get(RetTy, Params, isVarArg);
1373 delete $3; // Delete the argument list
1374 delete $1; // Delete the return type handle
1375 $$ = new PATypeHolder(HandleUpRefs(FT));
1378 | VOID '(' ArgTypeListI ')' OptFuncAttrs {
1379 // Allow but ignore attributes on function types; this permits auto-upgrade.
1380 // FIXME: remove in LLVM 3.0.
1381 std::vector<const Type*> Params;
1382 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1383 for ( ; I != E; ++I ) {
1384 const Type* Ty = I->Ty->get();
1385 Params.push_back(Ty);
1388 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1389 if (isVarArg) Params.pop_back();
1391 for (unsigned i = 0; i != Params.size(); ++i)
1392 if (!(Params[i]->isFirstClassType() || isa<OpaqueType>(Params[i])))
1393 GEN_ERROR("Function arguments must be value types!");
1397 FunctionType *FT = FunctionType::get($1, Params, isVarArg);
1398 delete $3; // Delete the argument list
1399 $$ = new PATypeHolder(HandleUpRefs(FT));
1403 | '[' EUINT64VAL 'x' Types ']' { // Sized array type?
1404 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1408 | '<' EUINT64VAL 'x' Types '>' { // Vector type?
1409 const llvm::Type* ElemTy = $4->get();
1410 if ((unsigned)$2 != $2)
1411 GEN_ERROR("Unsigned result not equal to signed result");
1412 if (!ElemTy->isFloatingPoint() && !ElemTy->isInteger())
1413 GEN_ERROR("Element type of a VectorType must be primitive");
1414 $$ = new PATypeHolder(HandleUpRefs(VectorType::get(*$4, (unsigned)$2)));
1418 | '{' TypeListI '}' { // Structure type?
1419 std::vector<const Type*> Elements;
1420 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1421 E = $2->end(); I != E; ++I)
1422 Elements.push_back(*I);
1424 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1428 | '{' '}' { // Empty structure type?
1429 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1432 | '<' '{' TypeListI '}' '>' {
1433 std::vector<const Type*> Elements;
1434 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1435 E = $3->end(); I != E; ++I)
1436 Elements.push_back(*I);
1438 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements, true)));
1442 | '<' '{' '}' '>' { // Empty structure type?
1443 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>(), true));
1449 : Types OptParamAttrs {
1450 // Allow but ignore attributes on function types; this permits auto-upgrade.
1451 // FIXME: remove in LLVM 3.0.
1453 $$.Attrs = ParamAttr::None;
1459 if (!UpRefs.empty())
1460 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1461 if (!(*$1)->isFirstClassType() && !isa<StructType>($1->get()))
1462 GEN_ERROR("LLVM functions cannot return aggregate types");
1466 $$ = new PATypeHolder(Type::VoidTy);
1470 ArgTypeList : ArgType {
1471 $$ = new TypeWithAttrsList();
1475 | ArgTypeList ',' ArgType {
1476 ($$=$1)->push_back($3);
1483 | ArgTypeList ',' DOTDOTDOT {
1485 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1486 TWA.Ty = new PATypeHolder(Type::VoidTy);
1491 $$ = new TypeWithAttrsList;
1492 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1493 TWA.Ty = new PATypeHolder(Type::VoidTy);
1498 $$ = new TypeWithAttrsList();
1502 // TypeList - Used for struct declarations and as a basis for function type
1503 // declaration type lists
1506 $$ = new std::list<PATypeHolder>();
1511 | TypeListI ',' Types {
1512 ($$=$1)->push_back(*$3);
1517 // ConstVal - The various declarations that go into the constant pool. This
1518 // production is used ONLY to represent constants that show up AFTER a 'const',
1519 // 'constant' or 'global' token at global scope. Constants that can be inlined
1520 // into other expressions (such as integers and constexprs) are handled by the
1521 // ResolvedVal, ValueRef and ConstValueRef productions.
1523 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1524 if (!UpRefs.empty())
1525 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1526 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1528 GEN_ERROR("Cannot make array constant with type: '" +
1529 (*$1)->getDescription() + "'");
1530 const Type *ETy = ATy->getElementType();
1531 int NumElements = ATy->getNumElements();
1533 // Verify that we have the correct size...
1534 if (NumElements != -1 && NumElements != (int)$3->size())
1535 GEN_ERROR("Type mismatch: constant sized array initialized with " +
1536 utostr($3->size()) + " arguments, but has size of " +
1537 itostr(NumElements) + "");
1539 // Verify all elements are correct type!
1540 for (unsigned i = 0; i < $3->size(); i++) {
1541 if (ETy != (*$3)[i]->getType())
1542 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1543 ETy->getDescription() +"' as required!\nIt is of type '"+
1544 (*$3)[i]->getType()->getDescription() + "'.");
1547 $$ = ConstantArray::get(ATy, *$3);
1548 delete $1; delete $3;
1552 if (!UpRefs.empty())
1553 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1554 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1556 GEN_ERROR("Cannot make array constant with type: '" +
1557 (*$1)->getDescription() + "'");
1559 int NumElements = ATy->getNumElements();
1560 if (NumElements != -1 && NumElements != 0)
1561 GEN_ERROR("Type mismatch: constant sized array initialized with 0"
1562 " arguments, but has size of " + itostr(NumElements) +"");
1563 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1567 | Types 'c' STRINGCONSTANT {
1568 if (!UpRefs.empty())
1569 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1570 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1572 GEN_ERROR("Cannot make array constant with type: '" +
1573 (*$1)->getDescription() + "'");
1575 int NumElements = ATy->getNumElements();
1576 const Type *ETy = ATy->getElementType();
1577 if (NumElements != -1 && NumElements != int($3->length()))
1578 GEN_ERROR("Can't build string constant of size " +
1579 itostr((int)($3->length())) +
1580 " when array has size " + itostr(NumElements) + "");
1581 std::vector<Constant*> Vals;
1582 if (ETy == Type::Int8Ty) {
1583 for (unsigned i = 0; i < $3->length(); ++i)
1584 Vals.push_back(ConstantInt::get(ETy, (*$3)[i]));
1587 GEN_ERROR("Cannot build string arrays of non byte sized elements");
1590 $$ = ConstantArray::get(ATy, Vals);
1594 | Types '<' ConstVector '>' { // Nonempty unsized arr
1595 if (!UpRefs.empty())
1596 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1597 const VectorType *PTy = dyn_cast<VectorType>($1->get());
1599 GEN_ERROR("Cannot make packed constant with type: '" +
1600 (*$1)->getDescription() + "'");
1601 const Type *ETy = PTy->getElementType();
1602 int NumElements = PTy->getNumElements();
1604 // Verify that we have the correct size...
1605 if (NumElements != -1 && NumElements != (int)$3->size())
1606 GEN_ERROR("Type mismatch: constant sized packed initialized with " +
1607 utostr($3->size()) + " arguments, but has size of " +
1608 itostr(NumElements) + "");
1610 // Verify all elements are correct type!
1611 for (unsigned i = 0; i < $3->size(); i++) {
1612 if (ETy != (*$3)[i]->getType())
1613 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1614 ETy->getDescription() +"' as required!\nIt is of type '"+
1615 (*$3)[i]->getType()->getDescription() + "'.");
1618 $$ = ConstantVector::get(PTy, *$3);
1619 delete $1; delete $3;
1622 | Types '{' ConstVector '}' {
1623 const StructType *STy = dyn_cast<StructType>($1->get());
1625 GEN_ERROR("Cannot make struct constant with type: '" +
1626 (*$1)->getDescription() + "'");
1628 if ($3->size() != STy->getNumContainedTypes())
1629 GEN_ERROR("Illegal number of initializers for structure type");
1631 // Check to ensure that constants are compatible with the type initializer!
1632 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1633 if ((*$3)[i]->getType() != STy->getElementType(i))
1634 GEN_ERROR("Expected type '" +
1635 STy->getElementType(i)->getDescription() +
1636 "' for element #" + utostr(i) +
1637 " of structure initializer");
1639 // Check to ensure that Type is not packed
1640 if (STy->isPacked())
1641 GEN_ERROR("Unpacked Initializer to vector type '" +
1642 STy->getDescription() + "'");
1644 $$ = ConstantStruct::get(STy, *$3);
1645 delete $1; delete $3;
1649 if (!UpRefs.empty())
1650 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1651 const StructType *STy = dyn_cast<StructType>($1->get());
1653 GEN_ERROR("Cannot make struct constant with type: '" +
1654 (*$1)->getDescription() + "'");
1656 if (STy->getNumContainedTypes() != 0)
1657 GEN_ERROR("Illegal number of initializers for structure type");
1659 // Check to ensure that Type is not packed
1660 if (STy->isPacked())
1661 GEN_ERROR("Unpacked Initializer to vector type '" +
1662 STy->getDescription() + "'");
1664 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1668 | Types '<' '{' ConstVector '}' '>' {
1669 const StructType *STy = dyn_cast<StructType>($1->get());
1671 GEN_ERROR("Cannot make struct constant with type: '" +
1672 (*$1)->getDescription() + "'");
1674 if ($4->size() != STy->getNumContainedTypes())
1675 GEN_ERROR("Illegal number of initializers for structure type");
1677 // Check to ensure that constants are compatible with the type initializer!
1678 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1679 if ((*$4)[i]->getType() != STy->getElementType(i))
1680 GEN_ERROR("Expected type '" +
1681 STy->getElementType(i)->getDescription() +
1682 "' for element #" + utostr(i) +
1683 " of structure initializer");
1685 // Check to ensure that Type is packed
1686 if (!STy->isPacked())
1687 GEN_ERROR("Vector initializer to non-vector type '" +
1688 STy->getDescription() + "'");
1690 $$ = ConstantStruct::get(STy, *$4);
1691 delete $1; delete $4;
1694 | Types '<' '{' '}' '>' {
1695 if (!UpRefs.empty())
1696 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1697 const StructType *STy = dyn_cast<StructType>($1->get());
1699 GEN_ERROR("Cannot make struct constant with type: '" +
1700 (*$1)->getDescription() + "'");
1702 if (STy->getNumContainedTypes() != 0)
1703 GEN_ERROR("Illegal number of initializers for structure type");
1705 // Check to ensure that Type is packed
1706 if (!STy->isPacked())
1707 GEN_ERROR("Vector initializer to non-vector type '" +
1708 STy->getDescription() + "'");
1710 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1715 if (!UpRefs.empty())
1716 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1717 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1719 GEN_ERROR("Cannot make null pointer constant with type: '" +
1720 (*$1)->getDescription() + "'");
1722 $$ = ConstantPointerNull::get(PTy);
1727 if (!UpRefs.empty())
1728 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1729 $$ = UndefValue::get($1->get());
1733 | Types SymbolicValueRef {
1734 if (!UpRefs.empty())
1735 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1736 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1738 GEN_ERROR("Global const reference must be a pointer type " + (*$1)->getDescription());
1740 // ConstExprs can exist in the body of a function, thus creating
1741 // GlobalValues whenever they refer to a variable. Because we are in
1742 // the context of a function, getExistingVal will search the functions
1743 // symbol table instead of the module symbol table for the global symbol,
1744 // which throws things all off. To get around this, we just tell
1745 // getExistingVal that we are at global scope here.
1747 Function *SavedCurFn = CurFun.CurrentFunction;
1748 CurFun.CurrentFunction = 0;
1750 Value *V = getExistingVal(Ty, $2);
1753 CurFun.CurrentFunction = SavedCurFn;
1755 // If this is an initializer for a constant pointer, which is referencing a
1756 // (currently) undefined variable, create a stub now that shall be replaced
1757 // in the future with the right type of variable.
1760 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1761 const PointerType *PT = cast<PointerType>(Ty);
1763 // First check to see if the forward references value is already created!
1764 PerModuleInfo::GlobalRefsType::iterator I =
1765 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1767 if (I != CurModule.GlobalRefs.end()) {
1768 V = I->second; // Placeholder already exists, use it...
1772 if ($2.Type == ValID::GlobalName)
1773 Name = $2.getName();
1774 else if ($2.Type != ValID::GlobalID)
1775 GEN_ERROR("Invalid reference to global");
1777 // Create the forward referenced global.
1779 if (const FunctionType *FTy =
1780 dyn_cast<FunctionType>(PT->getElementType())) {
1781 GV = Function::Create(FTy, GlobalValue::ExternalWeakLinkage, Name,
1782 CurModule.CurrentModule);
1784 GV = new GlobalVariable(PT->getElementType(), false,
1785 GlobalValue::ExternalWeakLinkage, 0,
1786 Name, CurModule.CurrentModule);
1789 // Keep track of the fact that we have a forward ref to recycle it
1790 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1795 $$ = cast<GlobalValue>(V);
1796 delete $1; // Free the type handle
1800 if (!UpRefs.empty())
1801 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1802 if ($1->get() != $2->getType())
1803 GEN_ERROR("Mismatched types for constant expression: " +
1804 (*$1)->getDescription() + " and " + $2->getType()->getDescription());
1809 | Types ZEROINITIALIZER {
1810 if (!UpRefs.empty())
1811 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1812 const Type *Ty = $1->get();
1813 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1814 GEN_ERROR("Cannot create a null initialized value of this type");
1815 $$ = Constant::getNullValue(Ty);
1819 | IntType ESINT64VAL { // integral constants
1820 if (!ConstantInt::isValueValidForType($1, $2))
1821 GEN_ERROR("Constant value doesn't fit in type");
1822 $$ = ConstantInt::get($1, $2, true);
1825 | IntType ESAPINTVAL { // arbitrary precision integer constants
1826 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1827 if ($2->getBitWidth() > BitWidth) {
1828 GEN_ERROR("Constant value does not fit in type");
1830 $2->sextOrTrunc(BitWidth);
1831 $$ = ConstantInt::get(*$2);
1835 | IntType EUINT64VAL { // integral constants
1836 if (!ConstantInt::isValueValidForType($1, $2))
1837 GEN_ERROR("Constant value doesn't fit in type");
1838 $$ = ConstantInt::get($1, $2, false);
1841 | IntType EUAPINTVAL { // arbitrary precision integer constants
1842 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1843 if ($2->getBitWidth() > BitWidth) {
1844 GEN_ERROR("Constant value does not fit in type");
1846 $2->zextOrTrunc(BitWidth);
1847 $$ = ConstantInt::get(*$2);
1851 | INTTYPE TRUETOK { // Boolean constants
1852 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1853 $$ = ConstantInt::getTrue();
1856 | INTTYPE FALSETOK { // Boolean constants
1857 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1858 $$ = ConstantInt::getFalse();
1861 | FPType FPVAL { // Floating point constants
1862 if (!ConstantFP::isValueValidForType($1, *$2))
1863 GEN_ERROR("Floating point constant invalid for type");
1864 // Lexer has no type info, so builds all float and double FP constants
1865 // as double. Fix this here. Long double is done right.
1866 if (&$2->getSemantics()==&APFloat::IEEEdouble && $1==Type::FloatTy)
1867 $2->convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven);
1868 $$ = ConstantFP::get(*$2);
1874 ConstExpr: CastOps '(' ConstVal TO Types ')' {
1875 if (!UpRefs.empty())
1876 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
1878 const Type *DestTy = $5->get();
1879 if (!CastInst::castIsValid($1, $3, DestTy))
1880 GEN_ERROR("invalid cast opcode for cast from '" +
1881 Val->getType()->getDescription() + "' to '" +
1882 DestTy->getDescription() + "'");
1883 $$ = ConstantExpr::getCast($1, $3, DestTy);
1886 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1887 if (!isa<PointerType>($3->getType()))
1888 GEN_ERROR("GetElementPtr requires a pointer operand");
1891 GetElementPtrInst::getIndexedType($3->getType(), $4->begin(), $4->end(),
1894 GEN_ERROR("Index list invalid for constant getelementptr");
1896 SmallVector<Constant*, 8> IdxVec;
1897 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1898 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1899 IdxVec.push_back(C);
1901 GEN_ERROR("Indices to constant getelementptr must be constants");
1905 $$ = ConstantExpr::getGetElementPtr($3, &IdxVec[0], IdxVec.size());
1908 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1909 if ($3->getType() != Type::Int1Ty)
1910 GEN_ERROR("Select condition must be of boolean type");
1911 if ($5->getType() != $7->getType())
1912 GEN_ERROR("Select operand types must match");
1913 $$ = ConstantExpr::getSelect($3, $5, $7);
1916 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1917 if ($3->getType() != $5->getType())
1918 GEN_ERROR("Binary operator types must match");
1920 $$ = ConstantExpr::get($1, $3, $5);
1922 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1923 if ($3->getType() != $5->getType())
1924 GEN_ERROR("Logical operator types must match");
1925 if (!$3->getType()->isInteger()) {
1926 if (Instruction::isShift($1) || !isa<VectorType>($3->getType()) ||
1927 !cast<VectorType>($3->getType())->getElementType()->isInteger())
1928 GEN_ERROR("Logical operator requires integral operands");
1930 $$ = ConstantExpr::get($1, $3, $5);
1933 | ICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1934 if ($4->getType() != $6->getType())
1935 GEN_ERROR("icmp operand types must match");
1936 $$ = ConstantExpr::getICmp($2, $4, $6);
1938 | FCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1939 if ($4->getType() != $6->getType())
1940 GEN_ERROR("fcmp operand types must match");
1941 $$ = ConstantExpr::getFCmp($2, $4, $6);
1943 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1944 if (!ExtractElementInst::isValidOperands($3, $5))
1945 GEN_ERROR("Invalid extractelement operands");
1946 $$ = ConstantExpr::getExtractElement($3, $5);
1949 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1950 if (!InsertElementInst::isValidOperands($3, $5, $7))
1951 GEN_ERROR("Invalid insertelement operands");
1952 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1955 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1956 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1957 GEN_ERROR("Invalid shufflevector operands");
1958 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1963 // ConstVector - A list of comma separated constants.
1964 ConstVector : ConstVector ',' ConstVal {
1965 ($$ = $1)->push_back($3);
1969 $$ = new std::vector<Constant*>();
1975 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1976 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1979 ThreadLocal : THREAD_LOCAL { $$ = true; } | { $$ = false; };
1981 // AliaseeRef - Match either GlobalValue or bitcast to GlobalValue.
1982 AliaseeRef : ResultTypes SymbolicValueRef {
1983 const Type* VTy = $1->get();
1984 Value *V = getVal(VTy, $2);
1986 GlobalValue* Aliasee = dyn_cast<GlobalValue>(V);
1988 GEN_ERROR("Aliases can be created only to global values");
1994 | BITCAST '(' AliaseeRef TO Types ')' {
1996 const Type *DestTy = $5->get();
1997 if (!CastInst::castIsValid($1, $3, DestTy))
1998 GEN_ERROR("invalid cast opcode for cast from '" +
1999 Val->getType()->getDescription() + "' to '" +
2000 DestTy->getDescription() + "'");
2002 $$ = ConstantExpr::getCast($1, $3, DestTy);
2007 //===----------------------------------------------------------------------===//
2008 // Rules to match Modules
2009 //===----------------------------------------------------------------------===//
2011 // Module rule: Capture the result of parsing the whole file into a result
2016 $$ = ParserResult = CurModule.CurrentModule;
2017 CurModule.ModuleDone();
2021 $$ = ParserResult = CurModule.CurrentModule;
2022 CurModule.ModuleDone();
2029 | DefinitionList Definition
2033 : DEFINE { CurFun.isDeclare = false; } Function {
2034 CurFun.FunctionDone();
2037 | DECLARE { CurFun.isDeclare = true; } FunctionProto {
2040 | MODULE ASM_TOK AsmBlock {
2043 | OptLocalAssign TYPE Types {
2044 if (!UpRefs.empty())
2045 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2046 // Eagerly resolve types. This is not an optimization, this is a
2047 // requirement that is due to the fact that we could have this:
2049 // %list = type { %list * }
2050 // %list = type { %list * } ; repeated type decl
2052 // If types are not resolved eagerly, then the two types will not be
2053 // determined to be the same type!
2055 ResolveTypeTo($1, *$3);
2057 if (!setTypeName(*$3, $1) && !$1) {
2059 // If this is a named type that is not a redefinition, add it to the slot
2061 CurModule.Types.push_back(*$3);
2067 | OptLocalAssign TYPE VOID {
2068 ResolveTypeTo($1, $3);
2070 if (!setTypeName($3, $1) && !$1) {
2072 // If this is a named type that is not a redefinition, add it to the slot
2074 CurModule.Types.push_back($3);
2078 | OptGlobalAssign GVVisibilityStyle ThreadLocal GlobalType ConstVal
2080 /* "Externally Visible" Linkage */
2082 GEN_ERROR("Global value initializer is not a constant");
2083 CurGV = ParseGlobalVariable($1, GlobalValue::ExternalLinkage,
2084 $2, $4, $5->getType(), $5, $3, $6);
2086 } GlobalVarAttributes {
2089 | OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2090 ConstVal OptAddrSpace {
2092 GEN_ERROR("Global value initializer is not a constant");
2093 CurGV = ParseGlobalVariable($1, $2, $3, $5, $6->getType(), $6, $4, $7);
2095 } GlobalVarAttributes {
2098 | OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2099 Types OptAddrSpace {
2100 if (!UpRefs.empty())
2101 GEN_ERROR("Invalid upreference in type: " + (*$6)->getDescription());
2102 CurGV = ParseGlobalVariable($1, $2, $3, $5, *$6, 0, $4, $7);
2105 } GlobalVarAttributes {
2109 | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
2116 GEN_ERROR("Alias name cannot be empty");
2118 Constant* Aliasee = $5;
2120 GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
2122 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
2123 CurModule.CurrentModule);
2124 GA->setVisibility($2);
2125 InsertValue(GA, CurModule.Values);
2128 // If there was a forward reference of this alias, resolve it now.
2132 ID = ValID::createGlobalName(Name);
2134 ID = ValID::createGlobalID(CurModule.Values.size()-1);
2136 if (GlobalValue *FWGV =
2137 CurModule.GetForwardRefForGlobal(GA->getType(), ID)) {
2138 // Replace uses of the fwdref with the actual alias.
2139 FWGV->replaceAllUsesWith(GA);
2140 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(FWGV))
2141 GV->eraseFromParent();
2143 cast<Function>(FWGV)->eraseFromParent();
2149 | TARGET TargetDefinition {
2152 | DEPLIBS '=' LibrariesDefinition {
2158 AsmBlock : STRINGCONSTANT {
2159 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
2160 if (AsmSoFar.empty())
2161 CurModule.CurrentModule->setModuleInlineAsm(*$1);
2163 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+*$1);
2168 TargetDefinition : TRIPLE '=' STRINGCONSTANT {
2169 CurModule.CurrentModule->setTargetTriple(*$3);
2172 | DATALAYOUT '=' STRINGCONSTANT {
2173 CurModule.CurrentModule->setDataLayout(*$3);
2177 LibrariesDefinition : '[' LibList ']';
2179 LibList : LibList ',' STRINGCONSTANT {
2180 CurModule.CurrentModule->addLibrary(*$3);
2185 CurModule.CurrentModule->addLibrary(*$1);
2189 | /* empty: end of list */ {
2194 //===----------------------------------------------------------------------===//
2195 // Rules to match Function Headers
2196 //===----------------------------------------------------------------------===//
2198 ArgListH : ArgListH ',' Types OptParamAttrs OptLocalName {
2199 if (!UpRefs.empty())
2200 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2201 if (*$3 == Type::VoidTy)
2202 GEN_ERROR("void typed arguments are invalid");
2203 ArgListEntry E; E.Attrs = $4; E.Ty = $3; E.Name = $5;
2208 | Types OptParamAttrs OptLocalName {
2209 if (!UpRefs.empty())
2210 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2211 if (*$1 == Type::VoidTy)
2212 GEN_ERROR("void typed arguments are invalid");
2213 ArgListEntry E; E.Attrs = $2; E.Ty = $1; E.Name = $3;
2214 $$ = new ArgListType;
2219 ArgList : ArgListH {
2223 | ArgListH ',' DOTDOTDOT {
2225 struct ArgListEntry E;
2226 E.Ty = new PATypeHolder(Type::VoidTy);
2228 E.Attrs = ParamAttr::None;
2233 $$ = new ArgListType;
2234 struct ArgListEntry E;
2235 E.Ty = new PATypeHolder(Type::VoidTy);
2237 E.Attrs = ParamAttr::None;
2246 FunctionHeaderH : OptCallingConv ResultTypes GlobalName '(' ArgList ')'
2247 OptFuncAttrs OptSection OptAlign OptGC {
2248 std::string FunctionName(*$3);
2249 delete $3; // Free strdup'd memory!
2251 // Check the function result for abstractness if this is a define. We should
2252 // have no abstract types at this point
2253 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved($2))
2254 GEN_ERROR("Reference to abstract result: "+ $2->get()->getDescription());
2256 if (!FunctionType::isValidReturnType(*$2))
2257 GEN_ERROR("Invalid result type for LLVM function");
2259 std::vector<const Type*> ParamTypeList;
2260 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2261 if ($7 != ParamAttr::None)
2262 Attrs.push_back(ParamAttrsWithIndex::get(0, $7));
2263 if ($5) { // If there are arguments...
2265 for (ArgListType::iterator I = $5->begin(); I != $5->end(); ++I, ++index) {
2266 const Type* Ty = I->Ty->get();
2267 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved(I->Ty))
2268 GEN_ERROR("Reference to abstract argument: " + Ty->getDescription());
2269 ParamTypeList.push_back(Ty);
2270 if (Ty != Type::VoidTy && I->Attrs != ParamAttr::None)
2271 Attrs.push_back(ParamAttrsWithIndex::get(index, I->Attrs));
2275 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
2276 if (isVarArg) ParamTypeList.pop_back();
2280 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2282 FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg);
2283 const PointerType *PFT = PointerType::getUnqual(FT);
2287 if (!FunctionName.empty()) {
2288 ID = ValID::createGlobalName((char*)FunctionName.c_str());
2290 ID = ValID::createGlobalID(CurModule.Values.size());
2294 // See if this function was forward referenced. If so, recycle the object.
2295 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
2296 // Move the function to the end of the list, from whereever it was
2297 // previously inserted.
2298 Fn = cast<Function>(FWRef);
2299 assert(Fn->getParamAttrs().isEmpty() &&
2300 "Forward reference has parameter attributes!");
2301 CurModule.CurrentModule->getFunctionList().remove(Fn);
2302 CurModule.CurrentModule->getFunctionList().push_back(Fn);
2303 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
2304 (Fn = CurModule.CurrentModule->getFunction(FunctionName))) {
2305 if (Fn->getFunctionType() != FT ) {
2306 // The existing function doesn't have the same type. This is an overload
2308 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2309 } else if (Fn->getParamAttrs() != PAL) {
2310 // The existing function doesn't have the same parameter attributes.
2311 // This is an overload error.
2312 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2313 } else if (!CurFun.isDeclare && !Fn->isDeclaration()) {
2314 // Neither the existing or the current function is a declaration and they
2315 // have the same name and same type. Clearly this is a redefinition.
2316 GEN_ERROR("Redefinition of function '" + FunctionName + "'");
2317 } else if (Fn->isDeclaration()) {
2318 // Make sure to strip off any argument names so we can't get conflicts.
2319 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2323 } else { // Not already defined?
2324 Fn = Function::Create(FT, GlobalValue::ExternalWeakLinkage, FunctionName,
2325 CurModule.CurrentModule);
2326 InsertValue(Fn, CurModule.Values);
2329 CurFun.FunctionStart(Fn);
2331 if (CurFun.isDeclare) {
2332 // If we have declaration, always overwrite linkage. This will allow us to
2333 // correctly handle cases, when pointer to function is passed as argument to
2334 // another function.
2335 Fn->setLinkage(CurFun.Linkage);
2336 Fn->setVisibility(CurFun.Visibility);
2338 Fn->setCallingConv($1);
2339 Fn->setParamAttrs(PAL);
2340 Fn->setAlignment($9);
2342 Fn->setSection(*$8);
2346 Fn->setCollector($10->c_str());
2350 // Add all of the arguments we parsed to the function...
2351 if ($5) { // Is null if empty...
2352 if (isVarArg) { // Nuke the last entry
2353 assert($5->back().Ty->get() == Type::VoidTy && $5->back().Name == 0 &&
2354 "Not a varargs marker!");
2355 delete $5->back().Ty;
2356 $5->pop_back(); // Delete the last entry
2358 Function::arg_iterator ArgIt = Fn->arg_begin();
2359 Function::arg_iterator ArgEnd = Fn->arg_end();
2361 for (ArgListType::iterator I = $5->begin();
2362 I != $5->end() && ArgIt != ArgEnd; ++I, ++ArgIt) {
2363 delete I->Ty; // Delete the typeholder...
2364 setValueName(ArgIt, I->Name); // Insert arg into symtab...
2370 delete $5; // We're now done with the argument list
2375 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2377 FunctionHeader : FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN {
2378 $$ = CurFun.CurrentFunction;
2380 // Make sure that we keep track of the linkage type even if there was a
2381 // previous "declare".
2383 $$->setVisibility($2);
2386 END : ENDTOK | '}'; // Allow end of '}' to end a function
2388 Function : BasicBlockList END {
2393 FunctionProto : FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH {
2394 CurFun.CurrentFunction->setLinkage($1);
2395 CurFun.CurrentFunction->setVisibility($2);
2396 $$ = CurFun.CurrentFunction;
2397 CurFun.FunctionDone();
2401 //===----------------------------------------------------------------------===//
2402 // Rules to match Basic Blocks
2403 //===----------------------------------------------------------------------===//
2405 OptSideEffect : /* empty */ {
2414 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2415 $$ = ValID::create($1);
2419 $$ = ValID::create($1);
2422 | FPVAL { // Perhaps it's an FP constant?
2423 $$ = ValID::create($1);
2427 $$ = ValID::create(ConstantInt::getTrue());
2431 $$ = ValID::create(ConstantInt::getFalse());
2435 $$ = ValID::createNull();
2439 $$ = ValID::createUndef();
2442 | ZEROINITIALIZER { // A vector zero constant.
2443 $$ = ValID::createZeroInit();
2446 | '<' ConstVector '>' { // Nonempty unsized packed vector
2447 const Type *ETy = (*$2)[0]->getType();
2448 int NumElements = $2->size();
2450 VectorType* pt = VectorType::get(ETy, NumElements);
2451 PATypeHolder* PTy = new PATypeHolder(
2459 // Verify all elements are correct type!
2460 for (unsigned i = 0; i < $2->size(); i++) {
2461 if (ETy != (*$2)[i]->getType())
2462 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2463 ETy->getDescription() +"' as required!\nIt is of type '" +
2464 (*$2)[i]->getType()->getDescription() + "'.");
2467 $$ = ValID::create(ConstantVector::get(pt, *$2));
2468 delete PTy; delete $2;
2472 $$ = ValID::create($1);
2475 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2476 $$ = ValID::createInlineAsm(*$3, *$5, $2);
2482 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2485 SymbolicValueRef : LOCALVAL_ID { // Is it an integer reference...?
2486 $$ = ValID::createLocalID($1);
2490 $$ = ValID::createGlobalID($1);
2493 | LocalName { // Is it a named reference...?
2494 $$ = ValID::createLocalName(*$1);
2498 | GlobalName { // Is it a named reference...?
2499 $$ = ValID::createGlobalName(*$1);
2504 // ValueRef - A reference to a definition... either constant or symbolic
2505 ValueRef : SymbolicValueRef | ConstValueRef;
2508 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2509 // type immediately preceeds the value reference, and allows complex constant
2510 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2511 ResolvedVal : Types ValueRef {
2512 if (!UpRefs.empty())
2513 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2514 $$ = getVal(*$1, $2);
2520 ReturnedVal : ResolvedVal {
2521 $$ = new std::vector<Value *>();
2525 | ReturnedVal ',' ResolvedVal {
2526 ($$=$1)->push_back($3);
2530 BasicBlockList : BasicBlockList BasicBlock {
2534 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2540 // Basic blocks are terminated by branching instructions:
2541 // br, br/cc, switch, ret
2543 BasicBlock : InstructionList OptLocalAssign BBTerminatorInst {
2544 setValueName($3, $2);
2547 $1->getInstList().push_back($3);
2552 InstructionList : InstructionList Inst {
2553 if (CastInst *CI1 = dyn_cast<CastInst>($2))
2554 if (CastInst *CI2 = dyn_cast<CastInst>(CI1->getOperand(0)))
2555 if (CI2->getParent() == 0)
2556 $1->getInstList().push_back(CI2);
2557 $1->getInstList().push_back($2);
2561 | /* empty */ { // Empty space between instruction lists
2562 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum), 0);
2565 | UNWINDS TO ValueRef { // Only the unwind to block
2566 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum), getBBVal($3));
2569 | LABELSTR { // Labelled (named) basic block
2570 $$ = defineBBVal(ValID::createLocalName(*$1), 0);
2574 | LABELSTR UNWINDS TO ValueRef {
2575 $$ = defineBBVal(ValID::createLocalName(*$1), getBBVal($4));
2581 RET ReturnedVal { // Return with a result...
2582 ValueList &VL = *$2;
2583 assert(!VL.empty() && "Invalid ret operands!");
2584 $$ = ReturnInst::Create(&VL[0], VL.size());
2588 | RET VOID { // Return with no result...
2589 $$ = ReturnInst::Create();
2592 | BR LABEL ValueRef { // Unconditional Branch...
2593 BasicBlock* tmpBB = getBBVal($3);
2595 $$ = BranchInst::Create(tmpBB);
2596 } // Conditional Branch...
2597 | BR INTTYPE ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2598 assert(cast<IntegerType>($2)->getBitWidth() == 1 && "Not Bool?");
2599 BasicBlock* tmpBBA = getBBVal($6);
2601 BasicBlock* tmpBBB = getBBVal($9);
2603 Value* tmpVal = getVal(Type::Int1Ty, $3);
2605 $$ = BranchInst::Create(tmpBBA, tmpBBB, tmpVal);
2607 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2608 Value* tmpVal = getVal($2, $3);
2610 BasicBlock* tmpBB = getBBVal($6);
2612 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, $8->size());
2615 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2617 for (; I != E; ++I) {
2618 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2619 S->addCase(CI, I->second);
2621 GEN_ERROR("Switch case is constant, but not a simple integer");
2626 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2627 Value* tmpVal = getVal($2, $3);
2629 BasicBlock* tmpBB = getBBVal($6);
2631 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, 0);
2635 | INVOKE OptCallingConv ResultTypes ValueRef '(' ParamList ')' OptFuncAttrs
2636 TO LABEL ValueRef UNWIND LABEL ValueRef {
2638 // Handle the short syntax
2639 const PointerType *PFTy = 0;
2640 const FunctionType *Ty = 0;
2641 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2642 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2643 // Pull out the types of all of the arguments...
2644 std::vector<const Type*> ParamTypes;
2645 ParamList::iterator I = $6->begin(), E = $6->end();
2646 for (; I != E; ++I) {
2647 const Type *Ty = I->Val->getType();
2648 if (Ty == Type::VoidTy)
2649 GEN_ERROR("Short call syntax cannot be used with varargs");
2650 ParamTypes.push_back(Ty);
2653 if (!FunctionType::isValidReturnType(*$3))
2654 GEN_ERROR("Invalid result type for LLVM function");
2656 Ty = FunctionType::get($3->get(), ParamTypes, false);
2657 PFTy = PointerType::getUnqual(Ty);
2662 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2664 BasicBlock *Normal = getBBVal($11);
2666 BasicBlock *Except = getBBVal($14);
2669 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2670 if ($8 != ParamAttr::None)
2671 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
2673 // Check the arguments
2675 if ($6->empty()) { // Has no arguments?
2676 // Make sure no arguments is a good thing!
2677 if (Ty->getNumParams() != 0)
2678 GEN_ERROR("No arguments passed to a function that "
2679 "expects arguments");
2680 } else { // Has arguments?
2681 // Loop through FunctionType's arguments and ensure they are specified
2683 FunctionType::param_iterator I = Ty->param_begin();
2684 FunctionType::param_iterator E = Ty->param_end();
2685 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
2688 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
2689 if (ArgI->Val->getType() != *I)
2690 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2691 (*I)->getDescription() + "'");
2692 Args.push_back(ArgI->Val);
2693 if (ArgI->Attrs != ParamAttr::None)
2694 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2697 if (Ty->isVarArg()) {
2699 for (; ArgI != ArgE; ++ArgI, ++index) {
2700 Args.push_back(ArgI->Val); // push the remaining varargs
2701 if (ArgI->Attrs != ParamAttr::None)
2702 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2704 } else if (I != E || ArgI != ArgE)
2705 GEN_ERROR("Invalid number of parameters detected");
2710 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2712 // Create the InvokeInst
2713 InvokeInst *II = InvokeInst::Create(V, Normal, Except, Args.begin(),Args.end());
2714 II->setCallingConv($2);
2715 II->setParamAttrs(PAL);
2721 $$ = new UnwindInst();
2725 $$ = new UnreachableInst();
2731 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2733 Constant *V = cast<Constant>(getExistingVal($2, $3));
2736 GEN_ERROR("May only switch on a constant pool value");
2738 BasicBlock* tmpBB = getBBVal($6);
2740 $$->push_back(std::make_pair(V, tmpBB));
2742 | IntType ConstValueRef ',' LABEL ValueRef {
2743 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2744 Constant *V = cast<Constant>(getExistingVal($1, $2));
2748 GEN_ERROR("May only switch on a constant pool value");
2750 BasicBlock* tmpBB = getBBVal($5);
2752 $$->push_back(std::make_pair(V, tmpBB));
2755 Inst : OptLocalAssign InstVal {
2756 // Is this definition named?? if so, assign the name...
2757 setValueName($2, $1);
2765 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2766 if (!UpRefs.empty())
2767 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2768 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2769 Value* tmpVal = getVal(*$1, $3);
2771 BasicBlock* tmpBB = getBBVal($5);
2773 $$->push_back(std::make_pair(tmpVal, tmpBB));
2776 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2778 Value* tmpVal = getVal($1->front().first->getType(), $4);
2780 BasicBlock* tmpBB = getBBVal($6);
2782 $1->push_back(std::make_pair(tmpVal, tmpBB));
2786 ParamList : Types OptParamAttrs ValueRef OptParamAttrs {
2787 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2788 if (!UpRefs.empty())
2789 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2790 // Used for call and invoke instructions
2791 $$ = new ParamList();
2792 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getVal($1->get(), $3);
2797 | LABEL OptParamAttrs ValueRef OptParamAttrs {
2798 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2799 // Labels are only valid in ASMs
2800 $$ = new ParamList();
2801 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getBBVal($3);
2805 | ParamList ',' Types OptParamAttrs ValueRef OptParamAttrs {
2806 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2807 if (!UpRefs.empty())
2808 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2810 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getVal($3->get(), $5);
2815 | ParamList ',' LABEL OptParamAttrs ValueRef OptParamAttrs {
2816 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2818 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getBBVal($5);
2822 | /*empty*/ { $$ = new ParamList(); };
2824 IndexList // Used for gep instructions and constant expressions
2825 : /*empty*/ { $$ = new std::vector<Value*>(); }
2826 | IndexList ',' ResolvedVal {
2833 OptTailCall : TAIL CALL {
2842 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2843 if (!UpRefs.empty())
2844 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2845 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2846 !isa<VectorType>((*$2).get()))
2848 "Arithmetic operator requires integer, FP, or packed operands");
2849 Value* val1 = getVal(*$2, $3);
2851 Value* val2 = getVal(*$2, $5);
2853 $$ = BinaryOperator::create($1, val1, val2);
2855 GEN_ERROR("binary operator returned null");
2858 | LogicalOps Types ValueRef ',' ValueRef {
2859 if (!UpRefs.empty())
2860 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2861 if (!(*$2)->isInteger()) {
2862 if (Instruction::isShift($1) || !isa<VectorType>($2->get()) ||
2863 !cast<VectorType>($2->get())->getElementType()->isInteger())
2864 GEN_ERROR("Logical operator requires integral operands");
2866 Value* tmpVal1 = getVal(*$2, $3);
2868 Value* tmpVal2 = getVal(*$2, $5);
2870 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2872 GEN_ERROR("binary operator returned null");
2875 | ICMP IPredicates Types ValueRef ',' ValueRef {
2876 if (!UpRefs.empty())
2877 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2878 if (isa<VectorType>((*$3).get()))
2879 GEN_ERROR("Vector types not supported by icmp instruction");
2880 Value* tmpVal1 = getVal(*$3, $4);
2882 Value* tmpVal2 = getVal(*$3, $6);
2884 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2886 GEN_ERROR("icmp operator returned null");
2889 | FCMP FPredicates Types ValueRef ',' ValueRef {
2890 if (!UpRefs.empty())
2891 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2892 if (isa<VectorType>((*$3).get()))
2893 GEN_ERROR("Vector types not supported by fcmp instruction");
2894 Value* tmpVal1 = getVal(*$3, $4);
2896 Value* tmpVal2 = getVal(*$3, $6);
2898 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2900 GEN_ERROR("fcmp operator returned null");
2903 | CastOps ResolvedVal TO Types {
2904 if (!UpRefs.empty())
2905 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2907 const Type* DestTy = $4->get();
2908 if (!CastInst::castIsValid($1, Val, DestTy))
2909 GEN_ERROR("invalid cast opcode for cast from '" +
2910 Val->getType()->getDescription() + "' to '" +
2911 DestTy->getDescription() + "'");
2912 $$ = CastInst::create($1, Val, DestTy);
2915 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2916 if ($2->getType() != Type::Int1Ty)
2917 GEN_ERROR("select condition must be boolean");
2918 if ($4->getType() != $6->getType())
2919 GEN_ERROR("select value types should match");
2920 $$ = SelectInst::Create($2, $4, $6);
2923 | VAARG ResolvedVal ',' Types {
2924 if (!UpRefs.empty())
2925 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2926 $$ = new VAArgInst($2, *$4);
2930 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2931 if (!ExtractElementInst::isValidOperands($2, $4))
2932 GEN_ERROR("Invalid extractelement operands");
2933 $$ = new ExtractElementInst($2, $4);
2936 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2937 if (!InsertElementInst::isValidOperands($2, $4, $6))
2938 GEN_ERROR("Invalid insertelement operands");
2939 $$ = InsertElementInst::Create($2, $4, $6);
2942 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2943 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2944 GEN_ERROR("Invalid shufflevector operands");
2945 $$ = new ShuffleVectorInst($2, $4, $6);
2949 const Type *Ty = $2->front().first->getType();
2950 if (!Ty->isFirstClassType())
2951 GEN_ERROR("PHI node operands must be of first class type");
2952 $$ = PHINode::Create(Ty);
2953 ((PHINode*)$$)->reserveOperandSpace($2->size());
2954 while ($2->begin() != $2->end()) {
2955 if ($2->front().first->getType() != Ty)
2956 GEN_ERROR("All elements of a PHI node must be of the same type");
2957 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2960 delete $2; // Free the list...
2963 | OptTailCall OptCallingConv ResultTypes ValueRef '(' ParamList ')'
2966 // Handle the short syntax
2967 const PointerType *PFTy = 0;
2968 const FunctionType *Ty = 0;
2969 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2970 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2971 // Pull out the types of all of the arguments...
2972 std::vector<const Type*> ParamTypes;
2973 ParamList::iterator I = $6->begin(), E = $6->end();
2974 for (; I != E; ++I) {
2975 const Type *Ty = I->Val->getType();
2976 if (Ty == Type::VoidTy)
2977 GEN_ERROR("Short call syntax cannot be used with varargs");
2978 ParamTypes.push_back(Ty);
2981 if (!FunctionType::isValidReturnType(*$3))
2982 GEN_ERROR("Invalid result type for LLVM function");
2984 Ty = FunctionType::get($3->get(), ParamTypes, false);
2985 PFTy = PointerType::getUnqual(Ty);
2988 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2991 // Check for call to invalid intrinsic to avoid crashing later.
2992 if (Function *theF = dyn_cast<Function>(V)) {
2993 if (theF->hasName() && (theF->getValueName()->getKeyLength() >= 5) &&
2994 (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
2995 !theF->getIntrinsicID(true))
2996 GEN_ERROR("Call to invalid LLVM intrinsic function '" +
2997 theF->getName() + "'");
3000 // Set up the ParamAttrs for the function
3001 SmallVector<ParamAttrsWithIndex, 8> Attrs;
3002 if ($8 != ParamAttr::None)
3003 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
3004 // Check the arguments
3006 if ($6->empty()) { // Has no arguments?
3007 // Make sure no arguments is a good thing!
3008 if (Ty->getNumParams() != 0)
3009 GEN_ERROR("No arguments passed to a function that "
3010 "expects arguments");
3011 } else { // Has arguments?
3012 // Loop through FunctionType's arguments and ensure they are specified
3013 // correctly. Also, gather any parameter attributes.
3014 FunctionType::param_iterator I = Ty->param_begin();
3015 FunctionType::param_iterator E = Ty->param_end();
3016 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
3019 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
3020 if (ArgI->Val->getType() != *I)
3021 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
3022 (*I)->getDescription() + "'");
3023 Args.push_back(ArgI->Val);
3024 if (ArgI->Attrs != ParamAttr::None)
3025 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3027 if (Ty->isVarArg()) {
3029 for (; ArgI != ArgE; ++ArgI, ++index) {
3030 Args.push_back(ArgI->Val); // push the remaining varargs
3031 if (ArgI->Attrs != ParamAttr::None)
3032 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3034 } else if (I != E || ArgI != ArgE)
3035 GEN_ERROR("Invalid number of parameters detected");
3038 // Finish off the ParamAttrs and check them
3041 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
3043 // Create the call node
3044 CallInst *CI = CallInst::Create(V, Args.begin(), Args.end());
3045 CI->setTailCall($1);
3046 CI->setCallingConv($2);
3047 CI->setParamAttrs(PAL);
3058 OptVolatile : VOLATILE {
3069 MemoryInst : MALLOC Types OptCAlign {
3070 if (!UpRefs.empty())
3071 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3072 $$ = new MallocInst(*$2, 0, $3);
3076 | MALLOC Types ',' INTTYPE ValueRef OptCAlign {
3077 if (!UpRefs.empty())
3078 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3079 Value* tmpVal = getVal($4, $5);
3081 $$ = new MallocInst(*$2, tmpVal, $6);
3084 | ALLOCA Types OptCAlign {
3085 if (!UpRefs.empty())
3086 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3087 $$ = new AllocaInst(*$2, 0, $3);
3091 | ALLOCA Types ',' INTTYPE ValueRef OptCAlign {
3092 if (!UpRefs.empty())
3093 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3094 Value* tmpVal = getVal($4, $5);
3096 $$ = new AllocaInst(*$2, tmpVal, $6);
3099 | FREE ResolvedVal {
3100 if (!isa<PointerType>($2->getType()))
3101 GEN_ERROR("Trying to free nonpointer type " +
3102 $2->getType()->getDescription() + "");
3103 $$ = new FreeInst($2);
3107 | OptVolatile LOAD Types ValueRef OptCAlign {
3108 if (!UpRefs.empty())
3109 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
3110 if (!isa<PointerType>($3->get()))
3111 GEN_ERROR("Can't load from nonpointer type: " +
3112 (*$3)->getDescription());
3113 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
3114 GEN_ERROR("Can't load from pointer of non-first-class type: " +
3115 (*$3)->getDescription());
3116 Value* tmpVal = getVal(*$3, $4);
3118 $$ = new LoadInst(tmpVal, "", $1, $5);
3121 | OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
3122 if (!UpRefs.empty())
3123 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
3124 const PointerType *PT = dyn_cast<PointerType>($5->get());
3126 GEN_ERROR("Can't store to a nonpointer type: " +
3127 (*$5)->getDescription());
3128 const Type *ElTy = PT->getElementType();
3129 if (ElTy != $3->getType())
3130 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
3131 "' into space of type '" + ElTy->getDescription() + "'");
3133 Value* tmpVal = getVal(*$5, $6);
3135 $$ = new StoreInst($3, tmpVal, $1, $7);
3138 | GETRESULT Types SymbolicValueRef ',' EUINT64VAL {
3139 Value *TmpVal = getVal($2->get(), $3);
3140 if (!GetResultInst::isValidOperands(TmpVal, $5))
3141 GEN_ERROR("Invalid getresult operands");
3142 $$ = new GetResultInst(TmpVal, $5);
3146 | GETELEMENTPTR Types ValueRef IndexList {
3147 if (!UpRefs.empty())
3148 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3149 if (!isa<PointerType>($2->get()))
3150 GEN_ERROR("getelementptr insn requires pointer operand");
3152 if (!GetElementPtrInst::getIndexedType(*$2, $4->begin(), $4->end(), true))
3153 GEN_ERROR("Invalid getelementptr indices for type '" +
3154 (*$2)->getDescription()+ "'");
3155 Value* tmpVal = getVal(*$2, $3);
3157 $$ = GetElementPtrInst::Create(tmpVal, $4->begin(), $4->end());
3165 // common code from the two 'RunVMAsmParser' functions
3166 static Module* RunParser(Module * M) {
3167 CurModule.CurrentModule = M;
3168 // Check to make sure the parser succeeded
3171 delete ParserResult;
3175 // Emit an error if there are any unresolved types left.
3176 if (!CurModule.LateResolveTypes.empty()) {
3177 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
3178 if (DID.Type == ValID::LocalName) {
3179 GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
3181 GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
3184 delete ParserResult;
3188 // Emit an error if there are any unresolved values left.
3189 if (!CurModule.LateResolveValues.empty()) {
3190 Value *V = CurModule.LateResolveValues.back();
3191 std::map<Value*, std::pair<ValID, int> >::iterator I =
3192 CurModule.PlaceHolderInfo.find(V);
3194 if (I != CurModule.PlaceHolderInfo.end()) {
3195 ValID &DID = I->second.first;
3196 if (DID.Type == ValID::LocalName) {
3197 GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
3199 GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
3202 delete ParserResult;
3207 // Check to make sure that parsing produced a result
3211 // Reset ParserResult variable while saving its value for the result.
3212 Module *Result = ParserResult;
3218 void llvm::GenerateError(const std::string &message, int LineNo) {
3219 if (LineNo == -1) LineNo = LLLgetLineNo();
3220 // TODO: column number in exception
3222 TheParseError->setError(LLLgetFilename(), message, LineNo);
3226 int yyerror(const char *ErrorMsg) {
3227 std::string where = LLLgetFilename() + ":" + utostr(LLLgetLineNo()) + ": ";
3228 std::string errMsg = where + "error: " + std::string(ErrorMsg);
3229 if (yychar != YYEMPTY && yychar != 0) {
3230 errMsg += " while reading token: '";
3231 errMsg += std::string(LLLgetTokenStart(),
3232 LLLgetTokenStart()+LLLgetTokenLength()) + "'";
3234 GenerateError(errMsg);