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) {
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");
565 /// getBBVal - get an existing BB value or create a forward reference for it.
567 static BasicBlock *getBBVal(const ValID &ID) {
568 assert(inFunctionScope() && "Can't get basic block at global scope!");
572 std::map<ValID, BasicBlock*>::iterator BBI = CurFun.BBForwardRefs.find(ID);
573 if (BBI != CurFun.BBForwardRefs.end()) {
575 } if (ID.Type == ValID::LocalName) {
576 std::string Name = ID.getName();
577 Value *N = CurFun.CurrentFunction->getValueSymbolTable().lookup(Name);
579 if (N->getType()->getTypeID() == Type::LabelTyID)
580 BB = cast<BasicBlock>(N);
582 GenerateError("Reference to label '" + Name + "' is actually of type '"+
583 N->getType()->getDescription() + "'");
585 } else if (ID.Type == ValID::LocalID) {
586 if (ID.Num < CurFun.NextValNum && ID.Num < CurFun.Values.size()) {
587 if (CurFun.Values[ID.Num]->getType()->getTypeID() == Type::LabelTyID)
588 BB = cast<BasicBlock>(CurFun.Values[ID.Num]);
590 GenerateError("Reference to label '%" + utostr(ID.Num) +
591 "' is actually of type '"+
592 CurFun.Values[ID.Num]->getType()->getDescription() + "'");
595 GenerateError("Illegal label reference " + ID.getName());
599 // If its already been defined, return it now.
601 ID.destroy(); // Free strdup'd memory.
605 // Otherwise, this block has not been seen before, create it.
607 if (ID.Type == ValID::LocalName)
609 BB = BasicBlock::Create(Name, CurFun.CurrentFunction);
611 // Insert it in the forward refs map.
612 CurFun.BBForwardRefs[ID] = BB;
618 //===----------------------------------------------------------------------===//
619 // Code to handle forward references in instructions
620 //===----------------------------------------------------------------------===//
622 // This code handles the late binding needed with statements that reference
623 // values not defined yet... for example, a forward branch, or the PHI node for
626 // This keeps a table (CurFun.LateResolveValues) of all such forward references
627 // and back patchs after we are done.
630 // ResolveDefinitions - If we could not resolve some defs at parsing
631 // time (forward branches, phi functions for loops, etc...) resolve the
635 ResolveDefinitions(ValueList &LateResolvers, ValueList *FutureLateResolvers) {
636 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
637 while (!LateResolvers.empty()) {
638 Value *V = LateResolvers.back();
639 LateResolvers.pop_back();
641 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
642 CurModule.PlaceHolderInfo.find(V);
643 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
645 ValID &DID = PHI->second.first;
647 Value *TheRealValue = getExistingVal(V->getType(), DID);
651 V->replaceAllUsesWith(TheRealValue);
653 CurModule.PlaceHolderInfo.erase(PHI);
654 } else if (FutureLateResolvers) {
655 // Functions have their unresolved items forwarded to the module late
657 InsertValue(V, *FutureLateResolvers);
659 if (DID.Type == ValID::LocalName || DID.Type == ValID::GlobalName) {
660 GenerateError("Reference to an invalid definition: '" +DID.getName()+
661 "' of type '" + V->getType()->getDescription() + "'",
665 GenerateError("Reference to an invalid definition: #" +
666 itostr(DID.Num) + " of type '" +
667 V->getType()->getDescription() + "'",
673 LateResolvers.clear();
676 // ResolveTypeTo - A brand new type was just declared. This means that (if
677 // name is not null) things referencing Name can be resolved. Otherwise, things
678 // refering to the number can be resolved. Do this now.
680 static void ResolveTypeTo(std::string *Name, const Type *ToTy) {
683 D = ValID::createLocalName(*Name);
685 D = ValID::createLocalID(CurModule.Types.size());
687 std::map<ValID, PATypeHolder>::iterator I =
688 CurModule.LateResolveTypes.find(D);
689 if (I != CurModule.LateResolveTypes.end()) {
690 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
691 CurModule.LateResolveTypes.erase(I);
695 // setValueName - Set the specified value to the name given. The name may be
696 // null potentially, in which case this is a noop. The string passed in is
697 // assumed to be a malloc'd string buffer, and is free'd by this function.
699 static void setValueName(Value *V, std::string *NameStr) {
700 if (!NameStr) return;
701 std::string Name(*NameStr); // Copy string
702 delete NameStr; // Free old string
704 if (V->getType() == Type::VoidTy) {
705 GenerateError("Can't assign name '" + Name+"' to value with void type");
709 assert(inFunctionScope() && "Must be in function scope!");
710 ValueSymbolTable &ST = CurFun.CurrentFunction->getValueSymbolTable();
711 if (ST.lookup(Name)) {
712 GenerateError("Redefinition of value '" + Name + "' of type '" +
713 V->getType()->getDescription() + "'");
721 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
722 /// this is a declaration, otherwise it is a definition.
723 static GlobalVariable *
724 ParseGlobalVariable(std::string *NameStr,
725 GlobalValue::LinkageTypes Linkage,
726 GlobalValue::VisibilityTypes Visibility,
727 bool isConstantGlobal, const Type *Ty,
728 Constant *Initializer, bool IsThreadLocal,
729 unsigned AddressSpace = 0) {
730 if (isa<FunctionType>(Ty)) {
731 GenerateError("Cannot declare global vars of function type");
735 const PointerType *PTy = PointerType::get(Ty, AddressSpace);
739 Name = *NameStr; // Copy string
740 delete NameStr; // Free old string
743 // See if this global value was forward referenced. If so, recycle the
747 ID = ValID::createGlobalName(Name);
749 ID = ValID::createGlobalID(CurModule.Values.size());
752 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
753 // Move the global to the end of the list, from whereever it was
754 // previously inserted.
755 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
756 CurModule.CurrentModule->getGlobalList().remove(GV);
757 CurModule.CurrentModule->getGlobalList().push_back(GV);
758 GV->setInitializer(Initializer);
759 GV->setLinkage(Linkage);
760 GV->setVisibility(Visibility);
761 GV->setConstant(isConstantGlobal);
762 GV->setThreadLocal(IsThreadLocal);
763 InsertValue(GV, CurModule.Values);
767 // If this global has a name
769 // if the global we're parsing has an initializer (is a definition) and
770 // has external linkage.
771 if (Initializer && Linkage != GlobalValue::InternalLinkage)
772 // If there is already a global with external linkage with this name
773 if (CurModule.CurrentModule->getGlobalVariable(Name, false)) {
774 // If we allow this GVar to get created, it will be renamed in the
775 // symbol table because it conflicts with an existing GVar. We can't
776 // allow redefinition of GVars whose linking indicates that their name
777 // must stay the same. Issue the error.
778 GenerateError("Redefinition of global variable named '" + Name +
779 "' of type '" + Ty->getDescription() + "'");
784 // Otherwise there is no existing GV to use, create one now.
786 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
787 CurModule.CurrentModule, IsThreadLocal, AddressSpace);
788 GV->setVisibility(Visibility);
789 InsertValue(GV, CurModule.Values);
793 // setTypeName - Set the specified type to the name given. The name may be
794 // null potentially, in which case this is a noop. The string passed in is
795 // assumed to be a malloc'd string buffer, and is freed by this function.
797 // This function returns true if the type has already been defined, but is
798 // allowed to be redefined in the specified context. If the name is a new name
799 // for the type plane, it is inserted and false is returned.
800 static bool setTypeName(const Type *T, std::string *NameStr) {
801 assert(!inFunctionScope() && "Can't give types function-local names!");
802 if (NameStr == 0) return false;
804 std::string Name(*NameStr); // Copy string
805 delete NameStr; // Free old string
807 // We don't allow assigning names to void type
808 if (T == Type::VoidTy) {
809 GenerateError("Can't assign name '" + Name + "' to the void type");
813 // Set the type name, checking for conflicts as we do so.
814 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
816 if (AlreadyExists) { // Inserting a name that is already defined???
817 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
818 assert(Existing && "Conflict but no matching type?!");
820 // There is only one case where this is allowed: when we are refining an
821 // opaque type. In this case, Existing will be an opaque type.
822 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
823 // We ARE replacing an opaque type!
824 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
828 // Otherwise, this is an attempt to redefine a type. That's okay if
829 // the redefinition is identical to the original. This will be so if
830 // Existing and T point to the same Type object. In this one case we
831 // allow the equivalent redefinition.
832 if (Existing == T) return true; // Yes, it's equal.
834 // Any other kind of (non-equivalent) redefinition is an error.
835 GenerateError("Redefinition of type named '" + Name + "' of type '" +
836 T->getDescription() + "'");
842 //===----------------------------------------------------------------------===//
843 // Code for handling upreferences in type names...
846 // TypeContains - Returns true if Ty directly contains E in it.
848 static bool TypeContains(const Type *Ty, const Type *E) {
849 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
850 E) != Ty->subtype_end();
855 // NestingLevel - The number of nesting levels that need to be popped before
856 // this type is resolved.
857 unsigned NestingLevel;
859 // LastContainedTy - This is the type at the current binding level for the
860 // type. Every time we reduce the nesting level, this gets updated.
861 const Type *LastContainedTy;
863 // UpRefTy - This is the actual opaque type that the upreference is
867 UpRefRecord(unsigned NL, OpaqueType *URTy)
868 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
872 // UpRefs - A list of the outstanding upreferences that need to be resolved.
873 static std::vector<UpRefRecord> UpRefs;
875 /// HandleUpRefs - Every time we finish a new layer of types, this function is
876 /// called. It loops through the UpRefs vector, which is a list of the
877 /// currently active types. For each type, if the up reference is contained in
878 /// the newly completed type, we decrement the level count. When the level
879 /// count reaches zero, the upreferenced type is the type that is passed in:
880 /// thus we can complete the cycle.
882 static PATypeHolder HandleUpRefs(const Type *ty) {
883 // If Ty isn't abstract, or if there are no up-references in it, then there is
884 // nothing to resolve here.
885 if (!ty->isAbstract() || UpRefs.empty()) return ty;
888 UR_OUT("Type '" << Ty->getDescription() <<
889 "' newly formed. Resolving upreferences.\n" <<
890 UpRefs.size() << " upreferences active!\n");
892 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
893 // to zero), we resolve them all together before we resolve them to Ty. At
894 // the end of the loop, if there is anything to resolve to Ty, it will be in
896 OpaqueType *TypeToResolve = 0;
898 for (unsigned i = 0; i != UpRefs.size(); ++i) {
899 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
900 << UpRefs[i].second->getDescription() << ") = "
901 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
902 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
903 // Decrement level of upreference
904 unsigned Level = --UpRefs[i].NestingLevel;
905 UpRefs[i].LastContainedTy = Ty;
906 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
907 if (Level == 0) { // Upreference should be resolved!
908 if (!TypeToResolve) {
909 TypeToResolve = UpRefs[i].UpRefTy;
911 UR_OUT(" * Resolving upreference for "
912 << UpRefs[i].second->getDescription() << "\n";
913 std::string OldName = UpRefs[i].UpRefTy->getDescription());
914 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
915 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
916 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
918 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
919 --i; // Do not skip the next element...
925 UR_OUT(" * Resolving upreference for "
926 << UpRefs[i].second->getDescription() << "\n";
927 std::string OldName = TypeToResolve->getDescription());
928 TypeToResolve->refineAbstractTypeTo(Ty);
934 //===----------------------------------------------------------------------===//
935 // RunVMAsmParser - Define an interface to this parser
936 //===----------------------------------------------------------------------===//
938 static Module* RunParser(Module * M);
940 Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
942 Module *M = RunParser(new Module(LLLgetFilename()));
950 llvm::Module *ModuleVal;
951 llvm::Function *FunctionVal;
952 llvm::BasicBlock *BasicBlockVal;
953 llvm::TerminatorInst *TermInstVal;
954 llvm::Instruction *InstVal;
955 llvm::Constant *ConstVal;
957 const llvm::Type *PrimType;
958 std::list<llvm::PATypeHolder> *TypeList;
959 llvm::PATypeHolder *TypeVal;
960 llvm::Value *ValueVal;
961 std::vector<llvm::Value*> *ValueList;
962 llvm::ArgListType *ArgList;
963 llvm::TypeWithAttrs TypeWithAttrs;
964 llvm::TypeWithAttrsList *TypeWithAttrsList;
965 llvm::ParamList *ParamList;
967 // Represent the RHS of PHI node
968 std::list<std::pair<llvm::Value*,
969 llvm::BasicBlock*> > *PHIList;
970 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
971 std::vector<llvm::Constant*> *ConstVector;
973 llvm::GlobalValue::LinkageTypes Linkage;
974 llvm::GlobalValue::VisibilityTypes Visibility;
975 llvm::ParameterAttributes ParamAttrs;
976 llvm::APInt *APIntVal;
981 llvm::APFloat *FPVal;
984 std::string *StrVal; // This memory must be deleted
985 llvm::ValID ValIDVal;
987 llvm::Instruction::BinaryOps BinaryOpVal;
988 llvm::Instruction::TermOps TermOpVal;
989 llvm::Instruction::MemoryOps MemOpVal;
990 llvm::Instruction::CastOps CastOpVal;
991 llvm::Instruction::OtherOps OtherOpVal;
992 llvm::ICmpInst::Predicate IPredicate;
993 llvm::FCmpInst::Predicate FPredicate;
996 %type <ModuleVal> Module
997 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
998 %type <BasicBlockVal> BasicBlock InstructionList
999 %type <TermInstVal> BBTerminatorInst
1000 %type <InstVal> Inst InstVal MemoryInst
1001 %type <ConstVal> ConstVal ConstExpr AliaseeRef
1002 %type <ConstVector> ConstVector
1003 %type <ArgList> ArgList ArgListH
1004 %type <PHIList> PHIList
1005 %type <ParamList> ParamList // For call param lists & GEP indices
1006 %type <ValueList> IndexList // For GEP indices
1007 %type <TypeList> TypeListI
1008 %type <TypeWithAttrsList> ArgTypeList ArgTypeListI
1009 %type <TypeWithAttrs> ArgType
1010 %type <JumpTable> JumpTable
1011 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
1012 %type <BoolVal> ThreadLocal // 'thread_local' or not
1013 %type <BoolVal> OptVolatile // 'volatile' or not
1014 %type <BoolVal> OptTailCall // TAIL CALL or plain CALL.
1015 %type <BoolVal> OptSideEffect // 'sideeffect' or not.
1016 %type <Linkage> GVInternalLinkage GVExternalLinkage
1017 %type <Linkage> FunctionDefineLinkage FunctionDeclareLinkage
1018 %type <Linkage> AliasLinkage
1019 %type <Visibility> GVVisibilityStyle
1021 // ValueRef - Unresolved reference to a definition or BB
1022 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
1023 %type <ValueVal> ResolvedVal // <type> <valref> pair
1024 %type <ValueList> ReturnedVal
1025 // Tokens and types for handling constant integer values
1027 // ESINT64VAL - A negative number within long long range
1028 %token <SInt64Val> ESINT64VAL
1030 // EUINT64VAL - A positive number within uns. long long range
1031 %token <UInt64Val> EUINT64VAL
1033 // ESAPINTVAL - A negative number with arbitrary precision
1034 %token <APIntVal> ESAPINTVAL
1036 // EUAPINTVAL - A positive number with arbitrary precision
1037 %token <APIntVal> EUAPINTVAL
1039 %token <UIntVal> LOCALVAL_ID GLOBALVAL_ID // %123 @123
1040 %token <FPVal> FPVAL // Float or Double constant
1042 // Built in types...
1043 %type <TypeVal> Types ResultTypes
1044 %type <PrimType> IntType FPType PrimType // Classifications
1045 %token <PrimType> VOID INTTYPE
1046 %token <PrimType> FLOAT DOUBLE X86_FP80 FP128 PPC_FP128 LABEL
1050 %token<StrVal> LOCALVAR GLOBALVAR LABELSTR
1051 %token<StrVal> STRINGCONSTANT ATSTRINGCONSTANT PCTSTRINGCONSTANT
1052 %type <StrVal> LocalName OptLocalName OptLocalAssign
1053 %type <StrVal> GlobalName OptGlobalAssign GlobalAssign
1054 %type <StrVal> OptSection SectionString OptGC
1056 %type <UIntVal> OptAlign OptCAlign OptAddrSpace
1058 %token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
1059 %token DECLARE DEFINE GLOBAL CONSTANT SECTION ALIAS VOLATILE THREAD_LOCAL
1060 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
1061 %token DLLIMPORT DLLEXPORT EXTERN_WEAK COMMON
1062 %token OPAQUE EXTERNAL TARGET TRIPLE ALIGN ADDRSPACE
1063 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
1064 %token CC_TOK CCC_TOK FASTCC_TOK COLDCC_TOK X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
1066 %type <UIntVal> OptCallingConv
1067 %type <ParamAttrs> OptParamAttrs ParamAttr
1068 %type <ParamAttrs> OptFuncAttrs FuncAttr
1070 // Basic Block Terminating Operators
1071 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
1074 %type <BinaryOpVal> ArithmeticOps LogicalOps // Binops Subcatagories
1075 %token <BinaryOpVal> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
1076 %token <BinaryOpVal> SHL LSHR ASHR
1078 %token <OtherOpVal> ICMP FCMP VICMP VFCMP
1079 %type <IPredicate> IPredicates
1080 %type <FPredicate> FPredicates
1081 %token EQ NE SLT SGT SLE SGE ULT UGT ULE UGE
1082 %token OEQ ONE OLT OGT OLE OGE ORD UNO UEQ UNE
1084 // Memory Instructions
1085 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
1088 %type <CastOpVal> CastOps
1089 %token <CastOpVal> TRUNC ZEXT SEXT FPTRUNC FPEXT BITCAST
1090 %token <CastOpVal> UITOFP SITOFP FPTOUI FPTOSI INTTOPTR PTRTOINT
1093 %token <OtherOpVal> PHI_TOK SELECT VAARG
1094 %token <OtherOpVal> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
1095 %token <OtherOpVal> GETRESULT
1097 // Function Attributes
1098 %token SIGNEXT ZEROEXT NORETURN INREG SRET NOUNWIND NOALIAS BYVAL NEST
1099 %token READNONE READONLY GC
1101 // Visibility Styles
1102 %token DEFAULT HIDDEN PROTECTED
1108 // Operations that are notably excluded from this list include:
1109 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
1111 ArithmeticOps: ADD | SUB | MUL | UDIV | SDIV | FDIV | UREM | SREM | FREM;
1112 LogicalOps : SHL | LSHR | ASHR | AND | OR | XOR;
1113 CastOps : TRUNC | ZEXT | SEXT | FPTRUNC | FPEXT | BITCAST |
1114 UITOFP | SITOFP | FPTOUI | FPTOSI | INTTOPTR | PTRTOINT;
1117 : EQ { $$ = ICmpInst::ICMP_EQ; } | NE { $$ = ICmpInst::ICMP_NE; }
1118 | SLT { $$ = ICmpInst::ICMP_SLT; } | SGT { $$ = ICmpInst::ICMP_SGT; }
1119 | SLE { $$ = ICmpInst::ICMP_SLE; } | SGE { $$ = ICmpInst::ICMP_SGE; }
1120 | ULT { $$ = ICmpInst::ICMP_ULT; } | UGT { $$ = ICmpInst::ICMP_UGT; }
1121 | ULE { $$ = ICmpInst::ICMP_ULE; } | UGE { $$ = ICmpInst::ICMP_UGE; }
1125 : OEQ { $$ = FCmpInst::FCMP_OEQ; } | ONE { $$ = FCmpInst::FCMP_ONE; }
1126 | OLT { $$ = FCmpInst::FCMP_OLT; } | OGT { $$ = FCmpInst::FCMP_OGT; }
1127 | OLE { $$ = FCmpInst::FCMP_OLE; } | OGE { $$ = FCmpInst::FCMP_OGE; }
1128 | ORD { $$ = FCmpInst::FCMP_ORD; } | UNO { $$ = FCmpInst::FCMP_UNO; }
1129 | UEQ { $$ = FCmpInst::FCMP_UEQ; } | UNE { $$ = FCmpInst::FCMP_UNE; }
1130 | ULT { $$ = FCmpInst::FCMP_ULT; } | UGT { $$ = FCmpInst::FCMP_UGT; }
1131 | ULE { $$ = FCmpInst::FCMP_ULE; } | UGE { $$ = FCmpInst::FCMP_UGE; }
1132 | TRUETOK { $$ = FCmpInst::FCMP_TRUE; }
1133 | FALSETOK { $$ = FCmpInst::FCMP_FALSE; }
1136 // These are some types that allow classification if we only want a particular
1137 // thing... for example, only a signed, unsigned, or integral type.
1139 FPType : FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80;
1141 LocalName : LOCALVAR | STRINGCONSTANT | PCTSTRINGCONSTANT ;
1142 OptLocalName : LocalName | /*empty*/ { $$ = 0; };
1144 OptAddrSpace : ADDRSPACE '(' EUINT64VAL ')' { $$=$3; }
1145 | /*empty*/ { $$=0; };
1147 /// OptLocalAssign - Value producing statements have an optional assignment
1149 OptLocalAssign : LocalName '=' {
1158 GlobalName : GLOBALVAR | ATSTRINGCONSTANT ;
1160 OptGlobalAssign : GlobalAssign
1166 GlobalAssign : GlobalName '=' {
1172 : INTERNAL { $$ = GlobalValue::InternalLinkage; }
1173 | WEAK { $$ = GlobalValue::WeakLinkage; }
1174 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1175 | APPENDING { $$ = GlobalValue::AppendingLinkage; }
1176 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1177 | COMMON { $$ = GlobalValue::CommonLinkage; }
1181 : DLLIMPORT { $$ = 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 $$ = ConstantExpr::getFCmp($2, $4, $6);
1943 | VICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1944 if ($4->getType() != $6->getType())
1945 GEN_ERROR("vicmp operand types must match");
1946 $$ = ConstantExpr::getVICmp($2, $4, $6);
1948 | VFCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1949 if ($4->getType() != $6->getType())
1950 GEN_ERROR("vfcmp operand types must match");
1951 $$ = ConstantExpr::getVFCmp($2, $4, $6);
1953 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1954 if (!ExtractElementInst::isValidOperands($3, $5))
1955 GEN_ERROR("Invalid extractelement operands");
1956 $$ = ConstantExpr::getExtractElement($3, $5);
1959 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1960 if (!InsertElementInst::isValidOperands($3, $5, $7))
1961 GEN_ERROR("Invalid insertelement operands");
1962 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1965 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1966 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1967 GEN_ERROR("Invalid shufflevector operands");
1968 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1973 // ConstVector - A list of comma separated constants.
1974 ConstVector : ConstVector ',' ConstVal {
1975 ($$ = $1)->push_back($3);
1979 $$ = new std::vector<Constant*>();
1985 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1986 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1989 ThreadLocal : THREAD_LOCAL { $$ = true; } | { $$ = false; };
1991 // AliaseeRef - Match either GlobalValue or bitcast to GlobalValue.
1992 AliaseeRef : ResultTypes SymbolicValueRef {
1993 const Type* VTy = $1->get();
1994 Value *V = getVal(VTy, $2);
1996 GlobalValue* Aliasee = dyn_cast<GlobalValue>(V);
1998 GEN_ERROR("Aliases can be created only to global values");
2004 | BITCAST '(' AliaseeRef TO Types ')' {
2006 const Type *DestTy = $5->get();
2007 if (!CastInst::castIsValid($1, $3, DestTy))
2008 GEN_ERROR("invalid cast opcode for cast from '" +
2009 Val->getType()->getDescription() + "' to '" +
2010 DestTy->getDescription() + "'");
2012 $$ = ConstantExpr::getCast($1, $3, DestTy);
2017 //===----------------------------------------------------------------------===//
2018 // Rules to match Modules
2019 //===----------------------------------------------------------------------===//
2021 // Module rule: Capture the result of parsing the whole file into a result
2026 $$ = ParserResult = CurModule.CurrentModule;
2027 CurModule.ModuleDone();
2031 $$ = ParserResult = CurModule.CurrentModule;
2032 CurModule.ModuleDone();
2039 | DefinitionList Definition
2043 : DEFINE { CurFun.isDeclare = false; } Function {
2044 CurFun.FunctionDone();
2047 | DECLARE { CurFun.isDeclare = true; } FunctionProto {
2050 | MODULE ASM_TOK AsmBlock {
2053 | OptLocalAssign TYPE Types {
2054 if (!UpRefs.empty())
2055 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2056 // Eagerly resolve types. This is not an optimization, this is a
2057 // requirement that is due to the fact that we could have this:
2059 // %list = type { %list * }
2060 // %list = type { %list * } ; repeated type decl
2062 // If types are not resolved eagerly, then the two types will not be
2063 // determined to be the same type!
2065 ResolveTypeTo($1, *$3);
2067 if (!setTypeName(*$3, $1) && !$1) {
2069 // If this is a named type that is not a redefinition, add it to the slot
2071 CurModule.Types.push_back(*$3);
2077 | OptLocalAssign TYPE VOID {
2078 ResolveTypeTo($1, $3);
2080 if (!setTypeName($3, $1) && !$1) {
2082 // If this is a named type that is not a redefinition, add it to the slot
2084 CurModule.Types.push_back($3);
2088 | OptGlobalAssign GVVisibilityStyle ThreadLocal GlobalType ConstVal
2090 /* "Externally Visible" Linkage */
2092 GEN_ERROR("Global value initializer is not a constant");
2093 CurGV = ParseGlobalVariable($1, GlobalValue::ExternalLinkage,
2094 $2, $4, $5->getType(), $5, $3, $6);
2096 } GlobalVarAttributes {
2099 | OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2100 ConstVal OptAddrSpace {
2102 GEN_ERROR("Global value initializer is not a constant");
2103 CurGV = ParseGlobalVariable($1, $2, $3, $5, $6->getType(), $6, $4, $7);
2105 } GlobalVarAttributes {
2108 | OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2109 Types OptAddrSpace {
2110 if (!UpRefs.empty())
2111 GEN_ERROR("Invalid upreference in type: " + (*$6)->getDescription());
2112 CurGV = ParseGlobalVariable($1, $2, $3, $5, *$6, 0, $4, $7);
2115 } GlobalVarAttributes {
2119 | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
2126 GEN_ERROR("Alias name cannot be empty");
2128 Constant* Aliasee = $5;
2130 GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
2132 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
2133 CurModule.CurrentModule);
2134 GA->setVisibility($2);
2135 InsertValue(GA, CurModule.Values);
2138 // If there was a forward reference of this alias, resolve it now.
2142 ID = ValID::createGlobalName(Name);
2144 ID = ValID::createGlobalID(CurModule.Values.size()-1);
2146 if (GlobalValue *FWGV =
2147 CurModule.GetForwardRefForGlobal(GA->getType(), ID)) {
2148 // Replace uses of the fwdref with the actual alias.
2149 FWGV->replaceAllUsesWith(GA);
2150 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(FWGV))
2151 GV->eraseFromParent();
2153 cast<Function>(FWGV)->eraseFromParent();
2159 | TARGET TargetDefinition {
2162 | DEPLIBS '=' LibrariesDefinition {
2168 AsmBlock : STRINGCONSTANT {
2169 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
2170 if (AsmSoFar.empty())
2171 CurModule.CurrentModule->setModuleInlineAsm(*$1);
2173 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+*$1);
2178 TargetDefinition : TRIPLE '=' STRINGCONSTANT {
2179 CurModule.CurrentModule->setTargetTriple(*$3);
2182 | DATALAYOUT '=' STRINGCONSTANT {
2183 CurModule.CurrentModule->setDataLayout(*$3);
2187 LibrariesDefinition : '[' LibList ']';
2189 LibList : LibList ',' STRINGCONSTANT {
2190 CurModule.CurrentModule->addLibrary(*$3);
2195 CurModule.CurrentModule->addLibrary(*$1);
2199 | /* empty: end of list */ {
2204 //===----------------------------------------------------------------------===//
2205 // Rules to match Function Headers
2206 //===----------------------------------------------------------------------===//
2208 ArgListH : ArgListH ',' Types OptParamAttrs OptLocalName {
2209 if (!UpRefs.empty())
2210 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2211 if (*$3 == Type::VoidTy)
2212 GEN_ERROR("void typed arguments are invalid");
2213 ArgListEntry E; E.Attrs = $4; E.Ty = $3; E.Name = $5;
2218 | Types OptParamAttrs OptLocalName {
2219 if (!UpRefs.empty())
2220 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2221 if (*$1 == Type::VoidTy)
2222 GEN_ERROR("void typed arguments are invalid");
2223 ArgListEntry E; E.Attrs = $2; E.Ty = $1; E.Name = $3;
2224 $$ = new ArgListType;
2229 ArgList : ArgListH {
2233 | ArgListH ',' DOTDOTDOT {
2235 struct ArgListEntry E;
2236 E.Ty = new PATypeHolder(Type::VoidTy);
2238 E.Attrs = ParamAttr::None;
2243 $$ = new ArgListType;
2244 struct ArgListEntry E;
2245 E.Ty = new PATypeHolder(Type::VoidTy);
2247 E.Attrs = ParamAttr::None;
2256 FunctionHeaderH : OptCallingConv ResultTypes GlobalName '(' ArgList ')'
2257 OptFuncAttrs OptSection OptAlign OptGC {
2258 std::string FunctionName(*$3);
2259 delete $3; // Free strdup'd memory!
2261 // Check the function result for abstractness if this is a define. We should
2262 // have no abstract types at this point
2263 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved($2))
2264 GEN_ERROR("Reference to abstract result: "+ $2->get()->getDescription());
2266 if (!FunctionType::isValidReturnType(*$2))
2267 GEN_ERROR("Invalid result type for LLVM function");
2269 std::vector<const Type*> ParamTypeList;
2270 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2271 if ($7 != ParamAttr::None)
2272 Attrs.push_back(ParamAttrsWithIndex::get(0, $7));
2273 if ($5) { // If there are arguments...
2275 for (ArgListType::iterator I = $5->begin(); I != $5->end(); ++I, ++index) {
2276 const Type* Ty = I->Ty->get();
2277 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved(I->Ty))
2278 GEN_ERROR("Reference to abstract argument: " + Ty->getDescription());
2279 ParamTypeList.push_back(Ty);
2280 if (Ty != Type::VoidTy && I->Attrs != ParamAttr::None)
2281 Attrs.push_back(ParamAttrsWithIndex::get(index, I->Attrs));
2285 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
2286 if (isVarArg) ParamTypeList.pop_back();
2290 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2292 FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg);
2293 const PointerType *PFT = PointerType::getUnqual(FT);
2297 if (!FunctionName.empty()) {
2298 ID = ValID::createGlobalName((char*)FunctionName.c_str());
2300 ID = ValID::createGlobalID(CurModule.Values.size());
2304 // See if this function was forward referenced. If so, recycle the object.
2305 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
2306 // Move the function to the end of the list, from whereever it was
2307 // previously inserted.
2308 Fn = cast<Function>(FWRef);
2309 assert(Fn->getParamAttrs().isEmpty() &&
2310 "Forward reference has parameter attributes!");
2311 CurModule.CurrentModule->getFunctionList().remove(Fn);
2312 CurModule.CurrentModule->getFunctionList().push_back(Fn);
2313 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
2314 (Fn = CurModule.CurrentModule->getFunction(FunctionName))) {
2315 if (Fn->getFunctionType() != FT ) {
2316 // The existing function doesn't have the same type. This is an overload
2318 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2319 } else if (Fn->getParamAttrs() != PAL) {
2320 // The existing function doesn't have the same parameter attributes.
2321 // This is an overload error.
2322 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2323 } else if (!CurFun.isDeclare && !Fn->isDeclaration()) {
2324 // Neither the existing or the current function is a declaration and they
2325 // have the same name and same type. Clearly this is a redefinition.
2326 GEN_ERROR("Redefinition of function '" + FunctionName + "'");
2327 } else if (Fn->isDeclaration()) {
2328 // Make sure to strip off any argument names so we can't get conflicts.
2329 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2333 } else { // Not already defined?
2334 Fn = Function::Create(FT, GlobalValue::ExternalWeakLinkage, FunctionName,
2335 CurModule.CurrentModule);
2336 InsertValue(Fn, CurModule.Values);
2339 CurFun.FunctionStart(Fn);
2341 if (CurFun.isDeclare) {
2342 // If we have declaration, always overwrite linkage. This will allow us to
2343 // correctly handle cases, when pointer to function is passed as argument to
2344 // another function.
2345 Fn->setLinkage(CurFun.Linkage);
2346 Fn->setVisibility(CurFun.Visibility);
2348 Fn->setCallingConv($1);
2349 Fn->setParamAttrs(PAL);
2350 Fn->setAlignment($9);
2352 Fn->setSection(*$8);
2356 Fn->setCollector($10->c_str());
2360 // Add all of the arguments we parsed to the function...
2361 if ($5) { // Is null if empty...
2362 if (isVarArg) { // Nuke the last entry
2363 assert($5->back().Ty->get() == Type::VoidTy && $5->back().Name == 0 &&
2364 "Not a varargs marker!");
2365 delete $5->back().Ty;
2366 $5->pop_back(); // Delete the last entry
2368 Function::arg_iterator ArgIt = Fn->arg_begin();
2369 Function::arg_iterator ArgEnd = Fn->arg_end();
2371 for (ArgListType::iterator I = $5->begin();
2372 I != $5->end() && ArgIt != ArgEnd; ++I, ++ArgIt) {
2373 delete I->Ty; // Delete the typeholder...
2374 setValueName(ArgIt, I->Name); // Insert arg into symtab...
2380 delete $5; // We're now done with the argument list
2385 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2387 FunctionHeader : FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN {
2388 $$ = CurFun.CurrentFunction;
2390 // Make sure that we keep track of the linkage type even if there was a
2391 // previous "declare".
2393 $$->setVisibility($2);
2396 END : ENDTOK | '}'; // Allow end of '}' to end a function
2398 Function : BasicBlockList END {
2403 FunctionProto : FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH {
2404 CurFun.CurrentFunction->setLinkage($1);
2405 CurFun.CurrentFunction->setVisibility($2);
2406 $$ = CurFun.CurrentFunction;
2407 CurFun.FunctionDone();
2411 //===----------------------------------------------------------------------===//
2412 // Rules to match Basic Blocks
2413 //===----------------------------------------------------------------------===//
2415 OptSideEffect : /* empty */ {
2424 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2425 $$ = ValID::create($1);
2429 $$ = ValID::create($1);
2432 | FPVAL { // Perhaps it's an FP constant?
2433 $$ = ValID::create($1);
2437 $$ = ValID::create(ConstantInt::getTrue());
2441 $$ = ValID::create(ConstantInt::getFalse());
2445 $$ = ValID::createNull();
2449 $$ = ValID::createUndef();
2452 | ZEROINITIALIZER { // A vector zero constant.
2453 $$ = ValID::createZeroInit();
2456 | '<' ConstVector '>' { // Nonempty unsized packed vector
2457 const Type *ETy = (*$2)[0]->getType();
2458 int NumElements = $2->size();
2460 VectorType* pt = VectorType::get(ETy, NumElements);
2461 PATypeHolder* PTy = new PATypeHolder(
2469 // Verify all elements are correct type!
2470 for (unsigned i = 0; i < $2->size(); i++) {
2471 if (ETy != (*$2)[i]->getType())
2472 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2473 ETy->getDescription() +"' as required!\nIt is of type '" +
2474 (*$2)[i]->getType()->getDescription() + "'.");
2477 $$ = ValID::create(ConstantVector::get(pt, *$2));
2478 delete PTy; delete $2;
2482 $$ = ValID::create($1);
2485 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2486 $$ = ValID::createInlineAsm(*$3, *$5, $2);
2492 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2495 SymbolicValueRef : LOCALVAL_ID { // Is it an integer reference...?
2496 $$ = ValID::createLocalID($1);
2500 $$ = ValID::createGlobalID($1);
2503 | LocalName { // Is it a named reference...?
2504 $$ = ValID::createLocalName(*$1);
2508 | GlobalName { // Is it a named reference...?
2509 $$ = ValID::createGlobalName(*$1);
2514 // ValueRef - A reference to a definition... either constant or symbolic
2515 ValueRef : SymbolicValueRef | ConstValueRef;
2518 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2519 // type immediately preceeds the value reference, and allows complex constant
2520 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2521 ResolvedVal : Types ValueRef {
2522 if (!UpRefs.empty())
2523 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2524 $$ = getVal(*$1, $2);
2530 ReturnedVal : ResolvedVal {
2531 $$ = new std::vector<Value *>();
2535 | ReturnedVal ',' ResolvedVal {
2536 ($$=$1)->push_back($3);
2540 BasicBlockList : BasicBlockList BasicBlock {
2544 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2550 // Basic blocks are terminated by branching instructions:
2551 // br, br/cc, switch, ret
2553 BasicBlock : InstructionList OptLocalAssign BBTerminatorInst {
2554 setValueName($3, $2);
2557 $1->getInstList().push_back($3);
2562 InstructionList : InstructionList Inst {
2563 if (CastInst *CI1 = dyn_cast<CastInst>($2))
2564 if (CastInst *CI2 = dyn_cast<CastInst>(CI1->getOperand(0)))
2565 if (CI2->getParent() == 0)
2566 $1->getInstList().push_back(CI2);
2567 $1->getInstList().push_back($2);
2571 | /* empty */ { // Empty space between instruction lists
2572 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum));
2575 | LABELSTR { // Labelled (named) basic block
2576 $$ = defineBBVal(ValID::createLocalName(*$1));
2583 RET ReturnedVal { // Return with a result...
2584 ValueList &VL = *$2;
2585 assert(!VL.empty() && "Invalid ret operands!");
2586 $$ = ReturnInst::Create(&VL[0], VL.size());
2590 | RET VOID { // Return with no result...
2591 $$ = ReturnInst::Create();
2594 | BR LABEL ValueRef { // Unconditional Branch...
2595 BasicBlock* tmpBB = getBBVal($3);
2597 $$ = BranchInst::Create(tmpBB);
2598 } // Conditional Branch...
2599 | BR INTTYPE ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2600 assert(cast<IntegerType>($2)->getBitWidth() == 1 && "Not Bool?");
2601 BasicBlock* tmpBBA = getBBVal($6);
2603 BasicBlock* tmpBBB = getBBVal($9);
2605 Value* tmpVal = getVal(Type::Int1Ty, $3);
2607 $$ = BranchInst::Create(tmpBBA, tmpBBB, tmpVal);
2609 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2610 Value* tmpVal = getVal($2, $3);
2612 BasicBlock* tmpBB = getBBVal($6);
2614 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, $8->size());
2617 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2619 for (; I != E; ++I) {
2620 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2621 S->addCase(CI, I->second);
2623 GEN_ERROR("Switch case is constant, but not a simple integer");
2628 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2629 Value* tmpVal = getVal($2, $3);
2631 BasicBlock* tmpBB = getBBVal($6);
2633 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, 0);
2637 | INVOKE OptCallingConv ResultTypes ValueRef '(' ParamList ')' OptFuncAttrs
2638 TO LABEL ValueRef UNWIND LABEL ValueRef {
2640 // Handle the short syntax
2641 const PointerType *PFTy = 0;
2642 const FunctionType *Ty = 0;
2643 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2644 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2645 // Pull out the types of all of the arguments...
2646 std::vector<const Type*> ParamTypes;
2647 ParamList::iterator I = $6->begin(), E = $6->end();
2648 for (; I != E; ++I) {
2649 const Type *Ty = I->Val->getType();
2650 if (Ty == Type::VoidTy)
2651 GEN_ERROR("Short call syntax cannot be used with varargs");
2652 ParamTypes.push_back(Ty);
2655 if (!FunctionType::isValidReturnType(*$3))
2656 GEN_ERROR("Invalid result type for LLVM function");
2658 Ty = FunctionType::get($3->get(), ParamTypes, false);
2659 PFTy = PointerType::getUnqual(Ty);
2664 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2666 BasicBlock *Normal = getBBVal($11);
2668 BasicBlock *Except = getBBVal($14);
2671 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2672 if ($8 != ParamAttr::None)
2673 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
2675 // Check the arguments
2677 if ($6->empty()) { // Has no arguments?
2678 // Make sure no arguments is a good thing!
2679 if (Ty->getNumParams() != 0)
2680 GEN_ERROR("No arguments passed to a function that "
2681 "expects arguments");
2682 } else { // Has arguments?
2683 // Loop through FunctionType's arguments and ensure they are specified
2685 FunctionType::param_iterator I = Ty->param_begin();
2686 FunctionType::param_iterator E = Ty->param_end();
2687 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
2690 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
2691 if (ArgI->Val->getType() != *I)
2692 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2693 (*I)->getDescription() + "'");
2694 Args.push_back(ArgI->Val);
2695 if (ArgI->Attrs != ParamAttr::None)
2696 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2699 if (Ty->isVarArg()) {
2701 for (; ArgI != ArgE; ++ArgI, ++index) {
2702 Args.push_back(ArgI->Val); // push the remaining varargs
2703 if (ArgI->Attrs != ParamAttr::None)
2704 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2706 } else if (I != E || ArgI != ArgE)
2707 GEN_ERROR("Invalid number of parameters detected");
2712 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2714 // Create the InvokeInst
2715 InvokeInst *II = InvokeInst::Create(V, Normal, Except, Args.begin(),Args.end());
2716 II->setCallingConv($2);
2717 II->setParamAttrs(PAL);
2723 $$ = new UnwindInst();
2727 $$ = new UnreachableInst();
2733 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2735 Constant *V = cast<Constant>(getExistingVal($2, $3));
2738 GEN_ERROR("May only switch on a constant pool value");
2740 BasicBlock* tmpBB = getBBVal($6);
2742 $$->push_back(std::make_pair(V, tmpBB));
2744 | IntType ConstValueRef ',' LABEL ValueRef {
2745 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2746 Constant *V = cast<Constant>(getExistingVal($1, $2));
2750 GEN_ERROR("May only switch on a constant pool value");
2752 BasicBlock* tmpBB = getBBVal($5);
2754 $$->push_back(std::make_pair(V, tmpBB));
2757 Inst : OptLocalAssign InstVal {
2758 // Is this definition named?? if so, assign the name...
2759 setValueName($2, $1);
2767 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2768 if (!UpRefs.empty())
2769 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2770 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2771 Value* tmpVal = getVal(*$1, $3);
2773 BasicBlock* tmpBB = getBBVal($5);
2775 $$->push_back(std::make_pair(tmpVal, tmpBB));
2778 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2780 Value* tmpVal = getVal($1->front().first->getType(), $4);
2782 BasicBlock* tmpBB = getBBVal($6);
2784 $1->push_back(std::make_pair(tmpVal, tmpBB));
2788 ParamList : Types OptParamAttrs ValueRef OptParamAttrs {
2789 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2790 if (!UpRefs.empty())
2791 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2792 // Used for call and invoke instructions
2793 $$ = new ParamList();
2794 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getVal($1->get(), $3);
2799 | LABEL OptParamAttrs ValueRef OptParamAttrs {
2800 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2801 // Labels are only valid in ASMs
2802 $$ = new ParamList();
2803 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getBBVal($3);
2807 | ParamList ',' Types OptParamAttrs ValueRef OptParamAttrs {
2808 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2809 if (!UpRefs.empty())
2810 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2812 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getVal($3->get(), $5);
2817 | ParamList ',' LABEL OptParamAttrs ValueRef OptParamAttrs {
2818 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2820 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getBBVal($5);
2824 | /*empty*/ { $$ = new ParamList(); };
2826 IndexList // Used for gep instructions and constant expressions
2827 : /*empty*/ { $$ = new std::vector<Value*>(); }
2828 | IndexList ',' ResolvedVal {
2835 OptTailCall : TAIL CALL {
2844 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2845 if (!UpRefs.empty())
2846 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2847 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2848 !isa<VectorType>((*$2).get()))
2850 "Arithmetic operator requires integer, FP, or packed operands");
2851 Value* val1 = getVal(*$2, $3);
2853 Value* val2 = getVal(*$2, $5);
2855 $$ = BinaryOperator::create($1, val1, val2);
2857 GEN_ERROR("binary operator returned null");
2860 | LogicalOps Types ValueRef ',' ValueRef {
2861 if (!UpRefs.empty())
2862 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2863 if (!(*$2)->isInteger()) {
2864 if (Instruction::isShift($1) || !isa<VectorType>($2->get()) ||
2865 !cast<VectorType>($2->get())->getElementType()->isInteger())
2866 GEN_ERROR("Logical operator requires integral operands");
2868 Value* tmpVal1 = getVal(*$2, $3);
2870 Value* tmpVal2 = getVal(*$2, $5);
2872 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2874 GEN_ERROR("binary operator returned null");
2877 | ICMP IPredicates Types ValueRef ',' ValueRef {
2878 if (!UpRefs.empty())
2879 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2880 if (isa<VectorType>((*$3).get()))
2881 GEN_ERROR("Vector types not supported by icmp instruction");
2882 Value* tmpVal1 = getVal(*$3, $4);
2884 Value* tmpVal2 = getVal(*$3, $6);
2886 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2888 GEN_ERROR("icmp operator returned null");
2891 | FCMP FPredicates Types ValueRef ',' ValueRef {
2892 if (!UpRefs.empty())
2893 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2894 if (isa<VectorType>((*$3).get()))
2895 GEN_ERROR("Vector types not supported by fcmp instruction");
2896 Value* tmpVal1 = getVal(*$3, $4);
2898 Value* tmpVal2 = getVal(*$3, $6);
2900 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2902 GEN_ERROR("fcmp operator returned null");
2905 | VICMP IPredicates Types ValueRef ',' ValueRef {
2906 if (!UpRefs.empty())
2907 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2908 if (!isa<VectorType>((*$3).get()))
2909 GEN_ERROR("Scalar types not supported by vicmp instruction");
2910 Value* tmpVal1 = getVal(*$3, $4);
2912 Value* tmpVal2 = getVal(*$3, $6);
2914 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2916 GEN_ERROR("icmp operator returned null");
2919 | VFCMP FPredicates Types ValueRef ',' ValueRef {
2920 if (!UpRefs.empty())
2921 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2922 if (!isa<VectorType>((*$3).get()))
2923 GEN_ERROR("Scalar types not supported by vfcmp instruction");
2924 Value* tmpVal1 = getVal(*$3, $4);
2926 Value* tmpVal2 = getVal(*$3, $6);
2928 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2930 GEN_ERROR("fcmp operator returned null");
2933 | CastOps ResolvedVal TO Types {
2934 if (!UpRefs.empty())
2935 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2937 const Type* DestTy = $4->get();
2938 if (!CastInst::castIsValid($1, Val, DestTy))
2939 GEN_ERROR("invalid cast opcode for cast from '" +
2940 Val->getType()->getDescription() + "' to '" +
2941 DestTy->getDescription() + "'");
2942 $$ = CastInst::create($1, Val, DestTy);
2945 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2946 if ($2->getType() != Type::Int1Ty)
2947 GEN_ERROR("select condition must be boolean");
2948 if ($4->getType() != $6->getType())
2949 GEN_ERROR("select value types should match");
2950 $$ = SelectInst::Create($2, $4, $6);
2953 | VAARG ResolvedVal ',' Types {
2954 if (!UpRefs.empty())
2955 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2956 $$ = new VAArgInst($2, *$4);
2960 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2961 if (!ExtractElementInst::isValidOperands($2, $4))
2962 GEN_ERROR("Invalid extractelement operands");
2963 $$ = new ExtractElementInst($2, $4);
2966 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2967 if (!InsertElementInst::isValidOperands($2, $4, $6))
2968 GEN_ERROR("Invalid insertelement operands");
2969 $$ = InsertElementInst::Create($2, $4, $6);
2972 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2973 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2974 GEN_ERROR("Invalid shufflevector operands");
2975 $$ = new ShuffleVectorInst($2, $4, $6);
2979 const Type *Ty = $2->front().first->getType();
2980 if (!Ty->isFirstClassType())
2981 GEN_ERROR("PHI node operands must be of first class type");
2982 $$ = PHINode::Create(Ty);
2983 ((PHINode*)$$)->reserveOperandSpace($2->size());
2984 while ($2->begin() != $2->end()) {
2985 if ($2->front().first->getType() != Ty)
2986 GEN_ERROR("All elements of a PHI node must be of the same type");
2987 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2990 delete $2; // Free the list...
2993 | OptTailCall OptCallingConv ResultTypes ValueRef '(' ParamList ')'
2996 // Handle the short syntax
2997 const PointerType *PFTy = 0;
2998 const FunctionType *Ty = 0;
2999 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
3000 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3001 // Pull out the types of all of the arguments...
3002 std::vector<const Type*> ParamTypes;
3003 ParamList::iterator I = $6->begin(), E = $6->end();
3004 for (; I != E; ++I) {
3005 const Type *Ty = I->Val->getType();
3006 if (Ty == Type::VoidTy)
3007 GEN_ERROR("Short call syntax cannot be used with varargs");
3008 ParamTypes.push_back(Ty);
3011 if (!FunctionType::isValidReturnType(*$3))
3012 GEN_ERROR("Invalid result type for LLVM function");
3014 Ty = FunctionType::get($3->get(), ParamTypes, false);
3015 PFTy = PointerType::getUnqual(Ty);
3018 Value *V = getVal(PFTy, $4); // Get the function we're calling...
3021 // Check for call to invalid intrinsic to avoid crashing later.
3022 if (Function *theF = dyn_cast<Function>(V)) {
3023 if (theF->hasName() && (theF->getValueName()->getKeyLength() >= 5) &&
3024 (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
3025 !theF->getIntrinsicID(true))
3026 GEN_ERROR("Call to invalid LLVM intrinsic function '" +
3027 theF->getName() + "'");
3030 // Set up the ParamAttrs for the function
3031 SmallVector<ParamAttrsWithIndex, 8> Attrs;
3032 if ($8 != ParamAttr::None)
3033 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
3034 // Check the arguments
3036 if ($6->empty()) { // Has no arguments?
3037 // Make sure no arguments is a good thing!
3038 if (Ty->getNumParams() != 0)
3039 GEN_ERROR("No arguments passed to a function that "
3040 "expects arguments");
3041 } else { // Has arguments?
3042 // Loop through FunctionType's arguments and ensure they are specified
3043 // correctly. Also, gather any parameter attributes.
3044 FunctionType::param_iterator I = Ty->param_begin();
3045 FunctionType::param_iterator E = Ty->param_end();
3046 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
3049 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
3050 if (ArgI->Val->getType() != *I)
3051 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
3052 (*I)->getDescription() + "'");
3053 Args.push_back(ArgI->Val);
3054 if (ArgI->Attrs != ParamAttr::None)
3055 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3057 if (Ty->isVarArg()) {
3059 for (; ArgI != ArgE; ++ArgI, ++index) {
3060 Args.push_back(ArgI->Val); // push the remaining varargs
3061 if (ArgI->Attrs != ParamAttr::None)
3062 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3064 } else if (I != E || ArgI != ArgE)
3065 GEN_ERROR("Invalid number of parameters detected");
3068 // Finish off the ParamAttrs and check them
3071 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
3073 // Create the call node
3074 CallInst *CI = CallInst::Create(V, Args.begin(), Args.end());
3075 CI->setTailCall($1);
3076 CI->setCallingConv($2);
3077 CI->setParamAttrs(PAL);
3088 OptVolatile : VOLATILE {
3099 MemoryInst : MALLOC Types OptCAlign {
3100 if (!UpRefs.empty())
3101 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3102 $$ = new MallocInst(*$2, 0, $3);
3106 | MALLOC Types ',' INTTYPE ValueRef OptCAlign {
3107 if (!UpRefs.empty())
3108 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3109 Value* tmpVal = getVal($4, $5);
3111 $$ = new MallocInst(*$2, tmpVal, $6);
3114 | ALLOCA Types OptCAlign {
3115 if (!UpRefs.empty())
3116 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3117 $$ = new AllocaInst(*$2, 0, $3);
3121 | ALLOCA Types ',' INTTYPE ValueRef OptCAlign {
3122 if (!UpRefs.empty())
3123 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3124 Value* tmpVal = getVal($4, $5);
3126 $$ = new AllocaInst(*$2, tmpVal, $6);
3129 | FREE ResolvedVal {
3130 if (!isa<PointerType>($2->getType()))
3131 GEN_ERROR("Trying to free nonpointer type " +
3132 $2->getType()->getDescription() + "");
3133 $$ = new FreeInst($2);
3137 | OptVolatile LOAD Types ValueRef OptCAlign {
3138 if (!UpRefs.empty())
3139 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
3140 if (!isa<PointerType>($3->get()))
3141 GEN_ERROR("Can't load from nonpointer type: " +
3142 (*$3)->getDescription());
3143 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
3144 GEN_ERROR("Can't load from pointer of non-first-class type: " +
3145 (*$3)->getDescription());
3146 Value* tmpVal = getVal(*$3, $4);
3148 $$ = new LoadInst(tmpVal, "", $1, $5);
3151 | OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
3152 if (!UpRefs.empty())
3153 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
3154 const PointerType *PT = dyn_cast<PointerType>($5->get());
3156 GEN_ERROR("Can't store to a nonpointer type: " +
3157 (*$5)->getDescription());
3158 const Type *ElTy = PT->getElementType();
3159 if (ElTy != $3->getType())
3160 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
3161 "' into space of type '" + ElTy->getDescription() + "'");
3163 Value* tmpVal = getVal(*$5, $6);
3165 $$ = new StoreInst($3, tmpVal, $1, $7);
3168 | GETRESULT Types ValueRef ',' EUINT64VAL {
3169 Value *TmpVal = getVal($2->get(), $3);
3170 if (!GetResultInst::isValidOperands(TmpVal, $5))
3171 GEN_ERROR("Invalid getresult operands");
3172 $$ = new GetResultInst(TmpVal, $5);
3176 | GETELEMENTPTR Types ValueRef IndexList {
3177 if (!UpRefs.empty())
3178 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3179 if (!isa<PointerType>($2->get()))
3180 GEN_ERROR("getelementptr insn requires pointer operand");
3182 if (!GetElementPtrInst::getIndexedType(*$2, $4->begin(), $4->end(), true))
3183 GEN_ERROR("Invalid getelementptr indices for type '" +
3184 (*$2)->getDescription()+ "'");
3185 Value* tmpVal = getVal(*$2, $3);
3187 $$ = GetElementPtrInst::Create(tmpVal, $4->begin(), $4->end());
3195 // common code from the two 'RunVMAsmParser' functions
3196 static Module* RunParser(Module * M) {
3197 CurModule.CurrentModule = M;
3198 // Check to make sure the parser succeeded
3201 delete ParserResult;
3205 // Emit an error if there are any unresolved types left.
3206 if (!CurModule.LateResolveTypes.empty()) {
3207 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
3208 if (DID.Type == ValID::LocalName) {
3209 GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
3211 GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
3214 delete ParserResult;
3218 // Emit an error if there are any unresolved values left.
3219 if (!CurModule.LateResolveValues.empty()) {
3220 Value *V = CurModule.LateResolveValues.back();
3221 std::map<Value*, std::pair<ValID, int> >::iterator I =
3222 CurModule.PlaceHolderInfo.find(V);
3224 if (I != CurModule.PlaceHolderInfo.end()) {
3225 ValID &DID = I->second.first;
3226 if (DID.Type == ValID::LocalName) {
3227 GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
3229 GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
3232 delete ParserResult;
3237 // Check to make sure that parsing produced a result
3241 // Reset ParserResult variable while saving its value for the result.
3242 Module *Result = ParserResult;
3248 void llvm::GenerateError(const std::string &message, int LineNo) {
3249 if (LineNo == -1) LineNo = LLLgetLineNo();
3250 // TODO: column number in exception
3252 TheParseError->setError(LLLgetFilename(), message, LineNo);
3256 int yyerror(const char *ErrorMsg) {
3257 std::string where = LLLgetFilename() + ":" + utostr(LLLgetLineNo()) + ": ";
3258 std::string errMsg = where + "error: " + std::string(ErrorMsg);
3259 if (yychar != YYEMPTY && yychar != 0) {
3260 errMsg += " while reading token: '";
3261 errMsg += std::string(LLLgetTokenStart(),
3262 LLLgetTokenStart()+LLLgetTokenLength()) + "'";
3264 GenerateError(errMsg);