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
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; }
1180 : DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1181 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1182 | EXTERNAL { $$ = GlobalValue::ExternalLinkage; }
1186 : /*empty*/ { $$ = GlobalValue::DefaultVisibility; }
1187 | DEFAULT { $$ = GlobalValue::DefaultVisibility; }
1188 | HIDDEN { $$ = GlobalValue::HiddenVisibility; }
1189 | PROTECTED { $$ = GlobalValue::ProtectedVisibility; }
1192 FunctionDeclareLinkage
1193 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1194 | DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; }
1195 | EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; }
1198 FunctionDefineLinkage
1199 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1200 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1201 | LINKONCE { $$ = GlobalValue::LinkOnceLinkage; }
1202 | WEAK { $$ = GlobalValue::WeakLinkage; }
1203 | DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; }
1207 : /*empty*/ { $$ = GlobalValue::ExternalLinkage; }
1208 | WEAK { $$ = GlobalValue::WeakLinkage; }
1209 | INTERNAL { $$ = GlobalValue::InternalLinkage; }
1212 OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
1213 CCC_TOK { $$ = CallingConv::C; } |
1214 FASTCC_TOK { $$ = CallingConv::Fast; } |
1215 COLDCC_TOK { $$ = CallingConv::Cold; } |
1216 X86_STDCALLCC_TOK { $$ = CallingConv::X86_StdCall; } |
1217 X86_FASTCALLCC_TOK { $$ = CallingConv::X86_FastCall; } |
1219 if ((unsigned)$2 != $2)
1220 GEN_ERROR("Calling conv too large");
1225 ParamAttr : ZEROEXT { $$ = ParamAttr::ZExt; }
1226 | ZEXT { $$ = ParamAttr::ZExt; }
1227 | SIGNEXT { $$ = ParamAttr::SExt; }
1228 | SEXT { $$ = ParamAttr::SExt; }
1229 | INREG { $$ = ParamAttr::InReg; }
1230 | SRET { $$ = ParamAttr::StructRet; }
1231 | NOALIAS { $$ = ParamAttr::NoAlias; }
1232 | BYVAL { $$ = ParamAttr::ByVal; }
1233 | NEST { $$ = ParamAttr::Nest; }
1234 | ALIGN EUINT64VAL { $$ =
1235 ParamAttr::constructAlignmentFromInt($2); }
1238 OptParamAttrs : /* empty */ { $$ = ParamAttr::None; }
1239 | OptParamAttrs ParamAttr {
1244 FuncAttr : NORETURN { $$ = ParamAttr::NoReturn; }
1245 | NOUNWIND { $$ = ParamAttr::NoUnwind; }
1246 | ZEROEXT { $$ = ParamAttr::ZExt; }
1247 | SIGNEXT { $$ = ParamAttr::SExt; }
1248 | READNONE { $$ = ParamAttr::ReadNone; }
1249 | READONLY { $$ = ParamAttr::ReadOnly; }
1252 OptFuncAttrs : /* empty */ { $$ = ParamAttr::None; }
1253 | OptFuncAttrs FuncAttr {
1258 OptGC : /* empty */ { $$ = 0; }
1259 | GC STRINGCONSTANT {
1264 // OptAlign/OptCAlign - An optional alignment, and an optional alignment with
1265 // a comma before it.
1266 OptAlign : /*empty*/ { $$ = 0; } |
1269 if ($$ != 0 && !isPowerOf2_32($$))
1270 GEN_ERROR("Alignment must be a power of two");
1273 OptCAlign : /*empty*/ { $$ = 0; } |
1274 ',' ALIGN EUINT64VAL {
1276 if ($$ != 0 && !isPowerOf2_32($$))
1277 GEN_ERROR("Alignment must be a power of two");
1283 SectionString : SECTION STRINGCONSTANT {
1284 for (unsigned i = 0, e = $2->length(); i != e; ++i)
1285 if ((*$2)[i] == '"' || (*$2)[i] == '\\')
1286 GEN_ERROR("Invalid character in section name");
1291 OptSection : /*empty*/ { $$ = 0; } |
1292 SectionString { $$ = $1; };
1294 // GlobalVarAttributes - Used to pass the attributes string on a global. CurGV
1295 // is set to be the global we are processing.
1297 GlobalVarAttributes : /* empty */ {} |
1298 ',' GlobalVarAttribute GlobalVarAttributes {};
1299 GlobalVarAttribute : SectionString {
1300 CurGV->setSection(*$1);
1304 | ALIGN EUINT64VAL {
1305 if ($2 != 0 && !isPowerOf2_32($2))
1306 GEN_ERROR("Alignment must be a power of two");
1307 CurGV->setAlignment($2);
1311 //===----------------------------------------------------------------------===//
1312 // Types includes all predefined types... except void, because it can only be
1313 // used in specific contexts (function returning void for example).
1315 // Derived types are added later...
1317 PrimType : INTTYPE | FLOAT | DOUBLE | PPC_FP128 | FP128 | X86_FP80 | LABEL ;
1321 $$ = new PATypeHolder(OpaqueType::get());
1325 $$ = new PATypeHolder($1);
1328 | Types OptAddrSpace '*' { // Pointer type?
1329 if (*$1 == Type::LabelTy)
1330 GEN_ERROR("Cannot form a pointer to a basic block");
1331 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1, $2)));
1335 | SymbolicValueRef { // Named types are also simple types...
1336 const Type* tmp = getTypeVal($1);
1338 $$ = new PATypeHolder(tmp);
1340 | '\\' EUINT64VAL { // Type UpReference
1341 if ($2 > (uint64_t)~0U) GEN_ERROR("Value out of range");
1342 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1343 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1344 $$ = new PATypeHolder(OT);
1345 UR_OUT("New Upreference!\n");
1348 | Types '(' ArgTypeListI ')' OptFuncAttrs {
1349 // Allow but ignore attributes on function types; this permits auto-upgrade.
1350 // FIXME: remove in LLVM 3.0.
1351 const Type *RetTy = *$1;
1352 if (!FunctionType::isValidReturnType(RetTy))
1353 GEN_ERROR("Invalid result type for LLVM function");
1355 std::vector<const Type*> Params;
1356 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1357 for (; I != E; ++I ) {
1358 const Type *Ty = I->Ty->get();
1359 Params.push_back(Ty);
1362 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1363 if (isVarArg) Params.pop_back();
1365 for (unsigned i = 0; i != Params.size(); ++i)
1366 if (!(Params[i]->isFirstClassType() || isa<OpaqueType>(Params[i])))
1367 GEN_ERROR("Function arguments must be value types!");
1371 FunctionType *FT = FunctionType::get(RetTy, Params, isVarArg);
1372 delete $3; // Delete the argument list
1373 delete $1; // Delete the return type handle
1374 $$ = new PATypeHolder(HandleUpRefs(FT));
1377 | VOID '(' ArgTypeListI ')' OptFuncAttrs {
1378 // Allow but ignore attributes on function types; this permits auto-upgrade.
1379 // FIXME: remove in LLVM 3.0.
1380 std::vector<const Type*> Params;
1381 TypeWithAttrsList::iterator I = $3->begin(), E = $3->end();
1382 for ( ; I != E; ++I ) {
1383 const Type* Ty = I->Ty->get();
1384 Params.push_back(Ty);
1387 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1388 if (isVarArg) Params.pop_back();
1390 for (unsigned i = 0; i != Params.size(); ++i)
1391 if (!(Params[i]->isFirstClassType() || isa<OpaqueType>(Params[i])))
1392 GEN_ERROR("Function arguments must be value types!");
1396 FunctionType *FT = FunctionType::get($1, Params, isVarArg);
1397 delete $3; // Delete the argument list
1398 $$ = new PATypeHolder(HandleUpRefs(FT));
1402 | '[' EUINT64VAL 'x' Types ']' { // Sized array type?
1403 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1407 | '<' EUINT64VAL 'x' Types '>' { // Vector type?
1408 const llvm::Type* ElemTy = $4->get();
1409 if ((unsigned)$2 != $2)
1410 GEN_ERROR("Unsigned result not equal to signed result");
1411 if (!ElemTy->isFloatingPoint() && !ElemTy->isInteger())
1412 GEN_ERROR("Element type of a VectorType must be primitive");
1413 $$ = new PATypeHolder(HandleUpRefs(VectorType::get(*$4, (unsigned)$2)));
1417 | '{' TypeListI '}' { // Structure type?
1418 std::vector<const Type*> Elements;
1419 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1420 E = $2->end(); I != E; ++I)
1421 Elements.push_back(*I);
1423 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1427 | '{' '}' { // Empty structure type?
1428 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1431 | '<' '{' TypeListI '}' '>' {
1432 std::vector<const Type*> Elements;
1433 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1434 E = $3->end(); I != E; ++I)
1435 Elements.push_back(*I);
1437 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements, true)));
1441 | '<' '{' '}' '>' { // Empty structure type?
1442 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>(), true));
1448 : Types OptParamAttrs {
1449 // Allow but ignore attributes on function types; this permits auto-upgrade.
1450 // FIXME: remove in LLVM 3.0.
1452 $$.Attrs = ParamAttr::None;
1458 if (!UpRefs.empty())
1459 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1460 if (!(*$1)->isFirstClassType() && !isa<StructType>($1->get()))
1461 GEN_ERROR("LLVM functions cannot return aggregate types");
1465 $$ = new PATypeHolder(Type::VoidTy);
1469 ArgTypeList : ArgType {
1470 $$ = new TypeWithAttrsList();
1474 | ArgTypeList ',' ArgType {
1475 ($$=$1)->push_back($3);
1482 | ArgTypeList ',' DOTDOTDOT {
1484 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1485 TWA.Ty = new PATypeHolder(Type::VoidTy);
1490 $$ = new TypeWithAttrsList;
1491 TypeWithAttrs TWA; TWA.Attrs = ParamAttr::None;
1492 TWA.Ty = new PATypeHolder(Type::VoidTy);
1497 $$ = new TypeWithAttrsList();
1501 // TypeList - Used for struct declarations and as a basis for function type
1502 // declaration type lists
1505 $$ = new std::list<PATypeHolder>();
1510 | TypeListI ',' Types {
1511 ($$=$1)->push_back(*$3);
1516 // ConstVal - The various declarations that go into the constant pool. This
1517 // production is used ONLY to represent constants that show up AFTER a 'const',
1518 // 'constant' or 'global' token at global scope. Constants that can be inlined
1519 // into other expressions (such as integers and constexprs) are handled by the
1520 // ResolvedVal, ValueRef and ConstValueRef productions.
1522 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1523 if (!UpRefs.empty())
1524 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1525 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1527 GEN_ERROR("Cannot make array constant with type: '" +
1528 (*$1)->getDescription() + "'");
1529 const Type *ETy = ATy->getElementType();
1530 int NumElements = ATy->getNumElements();
1532 // Verify that we have the correct size...
1533 if (NumElements != -1 && NumElements != (int)$3->size())
1534 GEN_ERROR("Type mismatch: constant sized array initialized with " +
1535 utostr($3->size()) + " arguments, but has size of " +
1536 itostr(NumElements) + "");
1538 // Verify all elements are correct type!
1539 for (unsigned i = 0; i < $3->size(); i++) {
1540 if (ETy != (*$3)[i]->getType())
1541 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1542 ETy->getDescription() +"' as required!\nIt is of type '"+
1543 (*$3)[i]->getType()->getDescription() + "'.");
1546 $$ = ConstantArray::get(ATy, *$3);
1547 delete $1; delete $3;
1551 if (!UpRefs.empty())
1552 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1553 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1555 GEN_ERROR("Cannot make array constant with type: '" +
1556 (*$1)->getDescription() + "'");
1558 int NumElements = ATy->getNumElements();
1559 if (NumElements != -1 && NumElements != 0)
1560 GEN_ERROR("Type mismatch: constant sized array initialized with 0"
1561 " arguments, but has size of " + itostr(NumElements) +"");
1562 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1566 | Types 'c' STRINGCONSTANT {
1567 if (!UpRefs.empty())
1568 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1569 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1571 GEN_ERROR("Cannot make array constant with type: '" +
1572 (*$1)->getDescription() + "'");
1574 int NumElements = ATy->getNumElements();
1575 const Type *ETy = ATy->getElementType();
1576 if (NumElements != -1 && NumElements != int($3->length()))
1577 GEN_ERROR("Can't build string constant of size " +
1578 itostr((int)($3->length())) +
1579 " when array has size " + itostr(NumElements) + "");
1580 std::vector<Constant*> Vals;
1581 if (ETy == Type::Int8Ty) {
1582 for (unsigned i = 0; i < $3->length(); ++i)
1583 Vals.push_back(ConstantInt::get(ETy, (*$3)[i]));
1586 GEN_ERROR("Cannot build string arrays of non byte sized elements");
1589 $$ = ConstantArray::get(ATy, Vals);
1593 | Types '<' ConstVector '>' { // Nonempty unsized arr
1594 if (!UpRefs.empty())
1595 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1596 const VectorType *PTy = dyn_cast<VectorType>($1->get());
1598 GEN_ERROR("Cannot make packed constant with type: '" +
1599 (*$1)->getDescription() + "'");
1600 const Type *ETy = PTy->getElementType();
1601 int NumElements = PTy->getNumElements();
1603 // Verify that we have the correct size...
1604 if (NumElements != -1 && NumElements != (int)$3->size())
1605 GEN_ERROR("Type mismatch: constant sized packed initialized with " +
1606 utostr($3->size()) + " arguments, but has size of " +
1607 itostr(NumElements) + "");
1609 // Verify all elements are correct type!
1610 for (unsigned i = 0; i < $3->size(); i++) {
1611 if (ETy != (*$3)[i]->getType())
1612 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1613 ETy->getDescription() +"' as required!\nIt is of type '"+
1614 (*$3)[i]->getType()->getDescription() + "'.");
1617 $$ = ConstantVector::get(PTy, *$3);
1618 delete $1; delete $3;
1621 | Types '{' ConstVector '}' {
1622 const StructType *STy = dyn_cast<StructType>($1->get());
1624 GEN_ERROR("Cannot make struct constant with type: '" +
1625 (*$1)->getDescription() + "'");
1627 if ($3->size() != STy->getNumContainedTypes())
1628 GEN_ERROR("Illegal number of initializers for structure type");
1630 // Check to ensure that constants are compatible with the type initializer!
1631 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1632 if ((*$3)[i]->getType() != STy->getElementType(i))
1633 GEN_ERROR("Expected type '" +
1634 STy->getElementType(i)->getDescription() +
1635 "' for element #" + utostr(i) +
1636 " of structure initializer");
1638 // Check to ensure that Type is not packed
1639 if (STy->isPacked())
1640 GEN_ERROR("Unpacked Initializer to vector type '" +
1641 STy->getDescription() + "'");
1643 $$ = ConstantStruct::get(STy, *$3);
1644 delete $1; delete $3;
1648 if (!UpRefs.empty())
1649 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1650 const StructType *STy = dyn_cast<StructType>($1->get());
1652 GEN_ERROR("Cannot make struct constant with type: '" +
1653 (*$1)->getDescription() + "'");
1655 if (STy->getNumContainedTypes() != 0)
1656 GEN_ERROR("Illegal number of initializers for structure type");
1658 // Check to ensure that Type is not packed
1659 if (STy->isPacked())
1660 GEN_ERROR("Unpacked Initializer to vector type '" +
1661 STy->getDescription() + "'");
1663 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1667 | Types '<' '{' ConstVector '}' '>' {
1668 const StructType *STy = dyn_cast<StructType>($1->get());
1670 GEN_ERROR("Cannot make struct constant with type: '" +
1671 (*$1)->getDescription() + "'");
1673 if ($4->size() != STy->getNumContainedTypes())
1674 GEN_ERROR("Illegal number of initializers for structure type");
1676 // Check to ensure that constants are compatible with the type initializer!
1677 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1678 if ((*$4)[i]->getType() != STy->getElementType(i))
1679 GEN_ERROR("Expected type '" +
1680 STy->getElementType(i)->getDescription() +
1681 "' for element #" + utostr(i) +
1682 " of structure initializer");
1684 // Check to ensure that Type is packed
1685 if (!STy->isPacked())
1686 GEN_ERROR("Vector initializer to non-vector type '" +
1687 STy->getDescription() + "'");
1689 $$ = ConstantStruct::get(STy, *$4);
1690 delete $1; delete $4;
1693 | Types '<' '{' '}' '>' {
1694 if (!UpRefs.empty())
1695 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1696 const StructType *STy = dyn_cast<StructType>($1->get());
1698 GEN_ERROR("Cannot make struct constant with type: '" +
1699 (*$1)->getDescription() + "'");
1701 if (STy->getNumContainedTypes() != 0)
1702 GEN_ERROR("Illegal number of initializers for structure type");
1704 // Check to ensure that Type is packed
1705 if (!STy->isPacked())
1706 GEN_ERROR("Vector initializer to non-vector type '" +
1707 STy->getDescription() + "'");
1709 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1714 if (!UpRefs.empty())
1715 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1716 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1718 GEN_ERROR("Cannot make null pointer constant with type: '" +
1719 (*$1)->getDescription() + "'");
1721 $$ = ConstantPointerNull::get(PTy);
1726 if (!UpRefs.empty())
1727 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1728 $$ = UndefValue::get($1->get());
1732 | Types SymbolicValueRef {
1733 if (!UpRefs.empty())
1734 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1735 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1737 GEN_ERROR("Global const reference must be a pointer type " + (*$1)->getDescription());
1739 // ConstExprs can exist in the body of a function, thus creating
1740 // GlobalValues whenever they refer to a variable. Because we are in
1741 // the context of a function, getExistingVal will search the functions
1742 // symbol table instead of the module symbol table for the global symbol,
1743 // which throws things all off. To get around this, we just tell
1744 // getExistingVal that we are at global scope here.
1746 Function *SavedCurFn = CurFun.CurrentFunction;
1747 CurFun.CurrentFunction = 0;
1749 Value *V = getExistingVal(Ty, $2);
1752 CurFun.CurrentFunction = SavedCurFn;
1754 // If this is an initializer for a constant pointer, which is referencing a
1755 // (currently) undefined variable, create a stub now that shall be replaced
1756 // in the future with the right type of variable.
1759 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1760 const PointerType *PT = cast<PointerType>(Ty);
1762 // First check to see if the forward references value is already created!
1763 PerModuleInfo::GlobalRefsType::iterator I =
1764 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1766 if (I != CurModule.GlobalRefs.end()) {
1767 V = I->second; // Placeholder already exists, use it...
1771 if ($2.Type == ValID::GlobalName)
1772 Name = $2.getName();
1773 else if ($2.Type != ValID::GlobalID)
1774 GEN_ERROR("Invalid reference to global");
1776 // Create the forward referenced global.
1778 if (const FunctionType *FTy =
1779 dyn_cast<FunctionType>(PT->getElementType())) {
1780 GV = Function::Create(FTy, GlobalValue::ExternalWeakLinkage, Name,
1781 CurModule.CurrentModule);
1783 GV = new GlobalVariable(PT->getElementType(), false,
1784 GlobalValue::ExternalWeakLinkage, 0,
1785 Name, CurModule.CurrentModule);
1788 // Keep track of the fact that we have a forward ref to recycle it
1789 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1794 $$ = cast<GlobalValue>(V);
1795 delete $1; // Free the type handle
1799 if (!UpRefs.empty())
1800 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1801 if ($1->get() != $2->getType())
1802 GEN_ERROR("Mismatched types for constant expression: " +
1803 (*$1)->getDescription() + " and " + $2->getType()->getDescription());
1808 | Types ZEROINITIALIZER {
1809 if (!UpRefs.empty())
1810 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1811 const Type *Ty = $1->get();
1812 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1813 GEN_ERROR("Cannot create a null initialized value of this type");
1814 $$ = Constant::getNullValue(Ty);
1818 | IntType ESINT64VAL { // integral constants
1819 if (!ConstantInt::isValueValidForType($1, $2))
1820 GEN_ERROR("Constant value doesn't fit in type");
1821 $$ = ConstantInt::get($1, $2, true);
1824 | IntType ESAPINTVAL { // arbitrary precision integer constants
1825 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1826 if ($2->getBitWidth() > BitWidth) {
1827 GEN_ERROR("Constant value does not fit in type");
1829 $2->sextOrTrunc(BitWidth);
1830 $$ = ConstantInt::get(*$2);
1834 | IntType EUINT64VAL { // integral constants
1835 if (!ConstantInt::isValueValidForType($1, $2))
1836 GEN_ERROR("Constant value doesn't fit in type");
1837 $$ = ConstantInt::get($1, $2, false);
1840 | IntType EUAPINTVAL { // arbitrary precision integer constants
1841 uint32_t BitWidth = cast<IntegerType>($1)->getBitWidth();
1842 if ($2->getBitWidth() > BitWidth) {
1843 GEN_ERROR("Constant value does not fit in type");
1845 $2->zextOrTrunc(BitWidth);
1846 $$ = ConstantInt::get(*$2);
1850 | INTTYPE TRUETOK { // Boolean constants
1851 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1852 $$ = ConstantInt::getTrue();
1855 | INTTYPE FALSETOK { // Boolean constants
1856 assert(cast<IntegerType>($1)->getBitWidth() == 1 && "Not Bool?");
1857 $$ = ConstantInt::getFalse();
1860 | FPType FPVAL { // Floating point constants
1861 if (!ConstantFP::isValueValidForType($1, *$2))
1862 GEN_ERROR("Floating point constant invalid for type");
1863 // Lexer has no type info, so builds all float and double FP constants
1864 // as double. Fix this here. Long double is done right.
1865 if (&$2->getSemantics()==&APFloat::IEEEdouble && $1==Type::FloatTy)
1866 $2->convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven);
1867 $$ = ConstantFP::get(*$2);
1873 ConstExpr: CastOps '(' ConstVal TO Types ')' {
1874 if (!UpRefs.empty())
1875 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
1877 const Type *DestTy = $5->get();
1878 if (!CastInst::castIsValid($1, $3, DestTy))
1879 GEN_ERROR("invalid cast opcode for cast from '" +
1880 Val->getType()->getDescription() + "' to '" +
1881 DestTy->getDescription() + "'");
1882 $$ = ConstantExpr::getCast($1, $3, DestTy);
1885 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1886 if (!isa<PointerType>($3->getType()))
1887 GEN_ERROR("GetElementPtr requires a pointer operand");
1890 GetElementPtrInst::getIndexedType($3->getType(), $4->begin(), $4->end(),
1893 GEN_ERROR("Index list invalid for constant getelementptr");
1895 SmallVector<Constant*, 8> IdxVec;
1896 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1897 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1898 IdxVec.push_back(C);
1900 GEN_ERROR("Indices to constant getelementptr must be constants");
1904 $$ = ConstantExpr::getGetElementPtr($3, &IdxVec[0], IdxVec.size());
1907 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1908 if ($3->getType() != Type::Int1Ty)
1909 GEN_ERROR("Select condition must be of boolean type");
1910 if ($5->getType() != $7->getType())
1911 GEN_ERROR("Select operand types must match");
1912 $$ = ConstantExpr::getSelect($3, $5, $7);
1915 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1916 if ($3->getType() != $5->getType())
1917 GEN_ERROR("Binary operator types must match");
1919 $$ = ConstantExpr::get($1, $3, $5);
1921 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1922 if ($3->getType() != $5->getType())
1923 GEN_ERROR("Logical operator types must match");
1924 if (!$3->getType()->isInteger()) {
1925 if (Instruction::isShift($1) || !isa<VectorType>($3->getType()) ||
1926 !cast<VectorType>($3->getType())->getElementType()->isInteger())
1927 GEN_ERROR("Logical operator requires integral operands");
1929 $$ = ConstantExpr::get($1, $3, $5);
1932 | ICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1933 if ($4->getType() != $6->getType())
1934 GEN_ERROR("icmp operand types must match");
1935 $$ = ConstantExpr::getICmp($2, $4, $6);
1937 | FCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1938 if ($4->getType() != $6->getType())
1939 GEN_ERROR("fcmp operand types must match");
1940 $$ = ConstantExpr::getFCmp($2, $4, $6);
1942 | VICMP IPredicates '(' ConstVal ',' ConstVal ')' {
1943 if ($4->getType() != $6->getType())
1944 GEN_ERROR("vicmp operand types must match");
1945 $$ = ConstantExpr::getVICmp($2, $4, $6);
1947 | VFCMP FPredicates '(' ConstVal ',' ConstVal ')' {
1948 if ($4->getType() != $6->getType())
1949 GEN_ERROR("vfcmp operand types must match");
1950 $$ = ConstantExpr::getVFCmp($2, $4, $6);
1952 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1953 if (!ExtractElementInst::isValidOperands($3, $5))
1954 GEN_ERROR("Invalid extractelement operands");
1955 $$ = ConstantExpr::getExtractElement($3, $5);
1958 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1959 if (!InsertElementInst::isValidOperands($3, $5, $7))
1960 GEN_ERROR("Invalid insertelement operands");
1961 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1964 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1965 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1966 GEN_ERROR("Invalid shufflevector operands");
1967 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1972 // ConstVector - A list of comma separated constants.
1973 ConstVector : ConstVector ',' ConstVal {
1974 ($$ = $1)->push_back($3);
1978 $$ = new std::vector<Constant*>();
1984 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1985 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1988 ThreadLocal : THREAD_LOCAL { $$ = true; } | { $$ = false; };
1990 // AliaseeRef - Match either GlobalValue or bitcast to GlobalValue.
1991 AliaseeRef : ResultTypes SymbolicValueRef {
1992 const Type* VTy = $1->get();
1993 Value *V = getVal(VTy, $2);
1995 GlobalValue* Aliasee = dyn_cast<GlobalValue>(V);
1997 GEN_ERROR("Aliases can be created only to global values");
2003 | BITCAST '(' AliaseeRef TO Types ')' {
2005 const Type *DestTy = $5->get();
2006 if (!CastInst::castIsValid($1, $3, DestTy))
2007 GEN_ERROR("invalid cast opcode for cast from '" +
2008 Val->getType()->getDescription() + "' to '" +
2009 DestTy->getDescription() + "'");
2011 $$ = ConstantExpr::getCast($1, $3, DestTy);
2016 //===----------------------------------------------------------------------===//
2017 // Rules to match Modules
2018 //===----------------------------------------------------------------------===//
2020 // Module rule: Capture the result of parsing the whole file into a result
2025 $$ = ParserResult = CurModule.CurrentModule;
2026 CurModule.ModuleDone();
2030 $$ = ParserResult = CurModule.CurrentModule;
2031 CurModule.ModuleDone();
2038 | DefinitionList Definition
2042 : DEFINE { CurFun.isDeclare = false; } Function {
2043 CurFun.FunctionDone();
2046 | DECLARE { CurFun.isDeclare = true; } FunctionProto {
2049 | MODULE ASM_TOK AsmBlock {
2052 | OptLocalAssign TYPE Types {
2053 if (!UpRefs.empty())
2054 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2055 // Eagerly resolve types. This is not an optimization, this is a
2056 // requirement that is due to the fact that we could have this:
2058 // %list = type { %list * }
2059 // %list = type { %list * } ; repeated type decl
2061 // If types are not resolved eagerly, then the two types will not be
2062 // determined to be the same type!
2064 ResolveTypeTo($1, *$3);
2066 if (!setTypeName(*$3, $1) && !$1) {
2068 // If this is a named type that is not a redefinition, add it to the slot
2070 CurModule.Types.push_back(*$3);
2076 | OptLocalAssign TYPE VOID {
2077 ResolveTypeTo($1, $3);
2079 if (!setTypeName($3, $1) && !$1) {
2081 // If this is a named type that is not a redefinition, add it to the slot
2083 CurModule.Types.push_back($3);
2087 | OptGlobalAssign GVVisibilityStyle ThreadLocal GlobalType ConstVal
2089 /* "Externally Visible" Linkage */
2091 GEN_ERROR("Global value initializer is not a constant");
2092 CurGV = ParseGlobalVariable($1, GlobalValue::ExternalLinkage,
2093 $2, $4, $5->getType(), $5, $3, $6);
2095 } GlobalVarAttributes {
2098 | OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2099 ConstVal OptAddrSpace {
2101 GEN_ERROR("Global value initializer is not a constant");
2102 CurGV = ParseGlobalVariable($1, $2, $3, $5, $6->getType(), $6, $4, $7);
2104 } GlobalVarAttributes {
2107 | OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal GlobalType
2108 Types OptAddrSpace {
2109 if (!UpRefs.empty())
2110 GEN_ERROR("Invalid upreference in type: " + (*$6)->getDescription());
2111 CurGV = ParseGlobalVariable($1, $2, $3, $5, *$6, 0, $4, $7);
2114 } GlobalVarAttributes {
2118 | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
2125 GEN_ERROR("Alias name cannot be empty");
2127 Constant* Aliasee = $5;
2129 GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
2131 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
2132 CurModule.CurrentModule);
2133 GA->setVisibility($2);
2134 InsertValue(GA, CurModule.Values);
2137 // If there was a forward reference of this alias, resolve it now.
2141 ID = ValID::createGlobalName(Name);
2143 ID = ValID::createGlobalID(CurModule.Values.size()-1);
2145 if (GlobalValue *FWGV =
2146 CurModule.GetForwardRefForGlobal(GA->getType(), ID)) {
2147 // Replace uses of the fwdref with the actual alias.
2148 FWGV->replaceAllUsesWith(GA);
2149 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(FWGV))
2150 GV->eraseFromParent();
2152 cast<Function>(FWGV)->eraseFromParent();
2158 | TARGET TargetDefinition {
2161 | DEPLIBS '=' LibrariesDefinition {
2167 AsmBlock : STRINGCONSTANT {
2168 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
2169 if (AsmSoFar.empty())
2170 CurModule.CurrentModule->setModuleInlineAsm(*$1);
2172 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+*$1);
2177 TargetDefinition : TRIPLE '=' STRINGCONSTANT {
2178 CurModule.CurrentModule->setTargetTriple(*$3);
2181 | DATALAYOUT '=' STRINGCONSTANT {
2182 CurModule.CurrentModule->setDataLayout(*$3);
2186 LibrariesDefinition : '[' LibList ']';
2188 LibList : LibList ',' STRINGCONSTANT {
2189 CurModule.CurrentModule->addLibrary(*$3);
2194 CurModule.CurrentModule->addLibrary(*$1);
2198 | /* empty: end of list */ {
2203 //===----------------------------------------------------------------------===//
2204 // Rules to match Function Headers
2205 //===----------------------------------------------------------------------===//
2207 ArgListH : ArgListH ',' Types OptParamAttrs OptLocalName {
2208 if (!UpRefs.empty())
2209 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2210 if (*$3 == Type::VoidTy)
2211 GEN_ERROR("void typed arguments are invalid");
2212 ArgListEntry E; E.Attrs = $4; E.Ty = $3; E.Name = $5;
2217 | Types OptParamAttrs OptLocalName {
2218 if (!UpRefs.empty())
2219 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2220 if (*$1 == Type::VoidTy)
2221 GEN_ERROR("void typed arguments are invalid");
2222 ArgListEntry E; E.Attrs = $2; E.Ty = $1; E.Name = $3;
2223 $$ = new ArgListType;
2228 ArgList : ArgListH {
2232 | ArgListH ',' DOTDOTDOT {
2234 struct ArgListEntry E;
2235 E.Ty = new PATypeHolder(Type::VoidTy);
2237 E.Attrs = ParamAttr::None;
2242 $$ = new ArgListType;
2243 struct ArgListEntry E;
2244 E.Ty = new PATypeHolder(Type::VoidTy);
2246 E.Attrs = ParamAttr::None;
2255 FunctionHeaderH : OptCallingConv ResultTypes GlobalName '(' ArgList ')'
2256 OptFuncAttrs OptSection OptAlign OptGC {
2257 std::string FunctionName(*$3);
2258 delete $3; // Free strdup'd memory!
2260 // Check the function result for abstractness if this is a define. We should
2261 // have no abstract types at this point
2262 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved($2))
2263 GEN_ERROR("Reference to abstract result: "+ $2->get()->getDescription());
2265 if (!FunctionType::isValidReturnType(*$2))
2266 GEN_ERROR("Invalid result type for LLVM function");
2268 std::vector<const Type*> ParamTypeList;
2269 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2270 if ($7 != ParamAttr::None)
2271 Attrs.push_back(ParamAttrsWithIndex::get(0, $7));
2272 if ($5) { // If there are arguments...
2274 for (ArgListType::iterator I = $5->begin(); I != $5->end(); ++I, ++index) {
2275 const Type* Ty = I->Ty->get();
2276 if (!CurFun.isDeclare && CurModule.TypeIsUnresolved(I->Ty))
2277 GEN_ERROR("Reference to abstract argument: " + Ty->getDescription());
2278 ParamTypeList.push_back(Ty);
2279 if (Ty != Type::VoidTy && I->Attrs != ParamAttr::None)
2280 Attrs.push_back(ParamAttrsWithIndex::get(index, I->Attrs));
2284 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
2285 if (isVarArg) ParamTypeList.pop_back();
2289 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2291 FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg);
2292 const PointerType *PFT = PointerType::getUnqual(FT);
2296 if (!FunctionName.empty()) {
2297 ID = ValID::createGlobalName((char*)FunctionName.c_str());
2299 ID = ValID::createGlobalID(CurModule.Values.size());
2303 // See if this function was forward referenced. If so, recycle the object.
2304 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
2305 // Move the function to the end of the list, from whereever it was
2306 // previously inserted.
2307 Fn = cast<Function>(FWRef);
2308 assert(Fn->getParamAttrs().isEmpty() &&
2309 "Forward reference has parameter attributes!");
2310 CurModule.CurrentModule->getFunctionList().remove(Fn);
2311 CurModule.CurrentModule->getFunctionList().push_back(Fn);
2312 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
2313 (Fn = CurModule.CurrentModule->getFunction(FunctionName))) {
2314 if (Fn->getFunctionType() != FT ) {
2315 // The existing function doesn't have the same type. This is an overload
2317 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2318 } else if (Fn->getParamAttrs() != PAL) {
2319 // The existing function doesn't have the same parameter attributes.
2320 // This is an overload error.
2321 GEN_ERROR("Overload of function '" + FunctionName + "' not permitted.");
2322 } else if (!CurFun.isDeclare && !Fn->isDeclaration()) {
2323 // Neither the existing or the current function is a declaration and they
2324 // have the same name and same type. Clearly this is a redefinition.
2325 GEN_ERROR("Redefinition of function '" + FunctionName + "'");
2326 } else if (Fn->isDeclaration()) {
2327 // Make sure to strip off any argument names so we can't get conflicts.
2328 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2332 } else { // Not already defined?
2333 Fn = Function::Create(FT, GlobalValue::ExternalWeakLinkage, FunctionName,
2334 CurModule.CurrentModule);
2335 InsertValue(Fn, CurModule.Values);
2338 CurFun.FunctionStart(Fn);
2340 if (CurFun.isDeclare) {
2341 // If we have declaration, always overwrite linkage. This will allow us to
2342 // correctly handle cases, when pointer to function is passed as argument to
2343 // another function.
2344 Fn->setLinkage(CurFun.Linkage);
2345 Fn->setVisibility(CurFun.Visibility);
2347 Fn->setCallingConv($1);
2348 Fn->setParamAttrs(PAL);
2349 Fn->setAlignment($9);
2351 Fn->setSection(*$8);
2355 Fn->setCollector($10->c_str());
2359 // Add all of the arguments we parsed to the function...
2360 if ($5) { // Is null if empty...
2361 if (isVarArg) { // Nuke the last entry
2362 assert($5->back().Ty->get() == Type::VoidTy && $5->back().Name == 0 &&
2363 "Not a varargs marker!");
2364 delete $5->back().Ty;
2365 $5->pop_back(); // Delete the last entry
2367 Function::arg_iterator ArgIt = Fn->arg_begin();
2368 Function::arg_iterator ArgEnd = Fn->arg_end();
2370 for (ArgListType::iterator I = $5->begin();
2371 I != $5->end() && ArgIt != ArgEnd; ++I, ++ArgIt) {
2372 delete I->Ty; // Delete the typeholder...
2373 setValueName(ArgIt, I->Name); // Insert arg into symtab...
2379 delete $5; // We're now done with the argument list
2384 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2386 FunctionHeader : FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN {
2387 $$ = CurFun.CurrentFunction;
2389 // Make sure that we keep track of the linkage type even if there was a
2390 // previous "declare".
2392 $$->setVisibility($2);
2395 END : ENDTOK | '}'; // Allow end of '}' to end a function
2397 Function : BasicBlockList END {
2402 FunctionProto : FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH {
2403 CurFun.CurrentFunction->setLinkage($1);
2404 CurFun.CurrentFunction->setVisibility($2);
2405 $$ = CurFun.CurrentFunction;
2406 CurFun.FunctionDone();
2410 //===----------------------------------------------------------------------===//
2411 // Rules to match Basic Blocks
2412 //===----------------------------------------------------------------------===//
2414 OptSideEffect : /* empty */ {
2423 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2424 $$ = ValID::create($1);
2428 $$ = ValID::create($1);
2431 | FPVAL { // Perhaps it's an FP constant?
2432 $$ = ValID::create($1);
2436 $$ = ValID::create(ConstantInt::getTrue());
2440 $$ = ValID::create(ConstantInt::getFalse());
2444 $$ = ValID::createNull();
2448 $$ = ValID::createUndef();
2451 | ZEROINITIALIZER { // A vector zero constant.
2452 $$ = ValID::createZeroInit();
2455 | '<' ConstVector '>' { // Nonempty unsized packed vector
2456 const Type *ETy = (*$2)[0]->getType();
2457 int NumElements = $2->size();
2459 VectorType* pt = VectorType::get(ETy, NumElements);
2460 PATypeHolder* PTy = new PATypeHolder(
2468 // Verify all elements are correct type!
2469 for (unsigned i = 0; i < $2->size(); i++) {
2470 if (ETy != (*$2)[i]->getType())
2471 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2472 ETy->getDescription() +"' as required!\nIt is of type '" +
2473 (*$2)[i]->getType()->getDescription() + "'.");
2476 $$ = ValID::create(ConstantVector::get(pt, *$2));
2477 delete PTy; delete $2;
2481 $$ = ValID::create($1);
2484 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2485 $$ = ValID::createInlineAsm(*$3, *$5, $2);
2491 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2494 SymbolicValueRef : LOCALVAL_ID { // Is it an integer reference...?
2495 $$ = ValID::createLocalID($1);
2499 $$ = ValID::createGlobalID($1);
2502 | LocalName { // Is it a named reference...?
2503 $$ = ValID::createLocalName(*$1);
2507 | GlobalName { // Is it a named reference...?
2508 $$ = ValID::createGlobalName(*$1);
2513 // ValueRef - A reference to a definition... either constant or symbolic
2514 ValueRef : SymbolicValueRef | ConstValueRef;
2517 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2518 // type immediately preceeds the value reference, and allows complex constant
2519 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2520 ResolvedVal : Types ValueRef {
2521 if (!UpRefs.empty())
2522 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2523 $$ = getVal(*$1, $2);
2529 ReturnedVal : ResolvedVal {
2530 $$ = new std::vector<Value *>();
2534 | ReturnedVal ',' ResolvedVal {
2535 ($$=$1)->push_back($3);
2539 BasicBlockList : BasicBlockList BasicBlock {
2543 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2549 // Basic blocks are terminated by branching instructions:
2550 // br, br/cc, switch, ret
2552 BasicBlock : InstructionList OptLocalAssign BBTerminatorInst {
2553 setValueName($3, $2);
2556 $1->getInstList().push_back($3);
2561 InstructionList : InstructionList Inst {
2562 if (CastInst *CI1 = dyn_cast<CastInst>($2))
2563 if (CastInst *CI2 = dyn_cast<CastInst>(CI1->getOperand(0)))
2564 if (CI2->getParent() == 0)
2565 $1->getInstList().push_back(CI2);
2566 $1->getInstList().push_back($2);
2570 | /* empty */ { // Empty space between instruction lists
2571 $$ = defineBBVal(ValID::createLocalID(CurFun.NextValNum));
2574 | LABELSTR { // Labelled (named) basic block
2575 $$ = defineBBVal(ValID::createLocalName(*$1));
2582 RET ReturnedVal { // Return with a result...
2583 ValueList &VL = *$2;
2584 assert(!VL.empty() && "Invalid ret operands!");
2585 $$ = ReturnInst::Create(&VL[0], VL.size());
2589 | RET VOID { // Return with no result...
2590 $$ = ReturnInst::Create();
2593 | BR LABEL ValueRef { // Unconditional Branch...
2594 BasicBlock* tmpBB = getBBVal($3);
2596 $$ = BranchInst::Create(tmpBB);
2597 } // Conditional Branch...
2598 | BR INTTYPE ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2599 assert(cast<IntegerType>($2)->getBitWidth() == 1 && "Not Bool?");
2600 BasicBlock* tmpBBA = getBBVal($6);
2602 BasicBlock* tmpBBB = getBBVal($9);
2604 Value* tmpVal = getVal(Type::Int1Ty, $3);
2606 $$ = BranchInst::Create(tmpBBA, tmpBBB, tmpVal);
2608 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2609 Value* tmpVal = getVal($2, $3);
2611 BasicBlock* tmpBB = getBBVal($6);
2613 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, $8->size());
2616 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2618 for (; I != E; ++I) {
2619 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2620 S->addCase(CI, I->second);
2622 GEN_ERROR("Switch case is constant, but not a simple integer");
2627 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2628 Value* tmpVal = getVal($2, $3);
2630 BasicBlock* tmpBB = getBBVal($6);
2632 SwitchInst *S = SwitchInst::Create(tmpVal, tmpBB, 0);
2636 | INVOKE OptCallingConv ResultTypes ValueRef '(' ParamList ')' OptFuncAttrs
2637 TO LABEL ValueRef UNWIND LABEL ValueRef {
2639 // Handle the short syntax
2640 const PointerType *PFTy = 0;
2641 const FunctionType *Ty = 0;
2642 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2643 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2644 // Pull out the types of all of the arguments...
2645 std::vector<const Type*> ParamTypes;
2646 ParamList::iterator I = $6->begin(), E = $6->end();
2647 for (; I != E; ++I) {
2648 const Type *Ty = I->Val->getType();
2649 if (Ty == Type::VoidTy)
2650 GEN_ERROR("Short call syntax cannot be used with varargs");
2651 ParamTypes.push_back(Ty);
2654 if (!FunctionType::isValidReturnType(*$3))
2655 GEN_ERROR("Invalid result type for LLVM function");
2657 Ty = FunctionType::get($3->get(), ParamTypes, false);
2658 PFTy = PointerType::getUnqual(Ty);
2663 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2665 BasicBlock *Normal = getBBVal($11);
2667 BasicBlock *Except = getBBVal($14);
2670 SmallVector<ParamAttrsWithIndex, 8> Attrs;
2671 if ($8 != ParamAttr::None)
2672 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
2674 // Check the arguments
2676 if ($6->empty()) { // Has no arguments?
2677 // Make sure no arguments is a good thing!
2678 if (Ty->getNumParams() != 0)
2679 GEN_ERROR("No arguments passed to a function that "
2680 "expects arguments");
2681 } else { // Has arguments?
2682 // Loop through FunctionType's arguments and ensure they are specified
2684 FunctionType::param_iterator I = Ty->param_begin();
2685 FunctionType::param_iterator E = Ty->param_end();
2686 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
2689 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
2690 if (ArgI->Val->getType() != *I)
2691 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
2692 (*I)->getDescription() + "'");
2693 Args.push_back(ArgI->Val);
2694 if (ArgI->Attrs != ParamAttr::None)
2695 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2698 if (Ty->isVarArg()) {
2700 for (; ArgI != ArgE; ++ArgI, ++index) {
2701 Args.push_back(ArgI->Val); // push the remaining varargs
2702 if (ArgI->Attrs != ParamAttr::None)
2703 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
2705 } else if (I != E || ArgI != ArgE)
2706 GEN_ERROR("Invalid number of parameters detected");
2711 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
2713 // Create the InvokeInst
2714 InvokeInst *II = InvokeInst::Create(V, Normal, Except, Args.begin(),Args.end());
2715 II->setCallingConv($2);
2716 II->setParamAttrs(PAL);
2722 $$ = new UnwindInst();
2726 $$ = new UnreachableInst();
2732 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2734 Constant *V = cast<Constant>(getExistingVal($2, $3));
2737 GEN_ERROR("May only switch on a constant pool value");
2739 BasicBlock* tmpBB = getBBVal($6);
2741 $$->push_back(std::make_pair(V, tmpBB));
2743 | IntType ConstValueRef ',' LABEL ValueRef {
2744 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2745 Constant *V = cast<Constant>(getExistingVal($1, $2));
2749 GEN_ERROR("May only switch on a constant pool value");
2751 BasicBlock* tmpBB = getBBVal($5);
2753 $$->push_back(std::make_pair(V, tmpBB));
2756 Inst : OptLocalAssign InstVal {
2757 // Is this definition named?? if so, assign the name...
2758 setValueName($2, $1);
2766 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2767 if (!UpRefs.empty())
2768 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2769 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2770 Value* tmpVal = getVal(*$1, $3);
2772 BasicBlock* tmpBB = getBBVal($5);
2774 $$->push_back(std::make_pair(tmpVal, tmpBB));
2777 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2779 Value* tmpVal = getVal($1->front().first->getType(), $4);
2781 BasicBlock* tmpBB = getBBVal($6);
2783 $1->push_back(std::make_pair(tmpVal, tmpBB));
2787 ParamList : Types OptParamAttrs ValueRef OptParamAttrs {
2788 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2789 if (!UpRefs.empty())
2790 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
2791 // Used for call and invoke instructions
2792 $$ = new ParamList();
2793 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getVal($1->get(), $3);
2798 | LABEL OptParamAttrs ValueRef OptParamAttrs {
2799 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2800 // Labels are only valid in ASMs
2801 $$ = new ParamList();
2802 ParamListEntry E; E.Attrs = $2 | $4; E.Val = getBBVal($3);
2806 | ParamList ',' Types OptParamAttrs ValueRef OptParamAttrs {
2807 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2808 if (!UpRefs.empty())
2809 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2811 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getVal($3->get(), $5);
2816 | ParamList ',' LABEL OptParamAttrs ValueRef OptParamAttrs {
2817 // FIXME: Remove trailing OptParamAttrs in LLVM 3.0, it was a mistake in 2.0
2819 ParamListEntry E; E.Attrs = $4 | $6; E.Val = getBBVal($5);
2823 | /*empty*/ { $$ = new ParamList(); };
2825 IndexList // Used for gep instructions and constant expressions
2826 : /*empty*/ { $$ = new std::vector<Value*>(); }
2827 | IndexList ',' ResolvedVal {
2834 OptTailCall : TAIL CALL {
2843 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2844 if (!UpRefs.empty())
2845 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2846 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2847 !isa<VectorType>((*$2).get()))
2849 "Arithmetic operator requires integer, FP, or packed operands");
2850 Value* val1 = getVal(*$2, $3);
2852 Value* val2 = getVal(*$2, $5);
2854 $$ = BinaryOperator::create($1, val1, val2);
2856 GEN_ERROR("binary operator returned null");
2859 | LogicalOps Types ValueRef ',' ValueRef {
2860 if (!UpRefs.empty())
2861 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
2862 if (!(*$2)->isInteger()) {
2863 if (Instruction::isShift($1) || !isa<VectorType>($2->get()) ||
2864 !cast<VectorType>($2->get())->getElementType()->isInteger())
2865 GEN_ERROR("Logical operator requires integral operands");
2867 Value* tmpVal1 = getVal(*$2, $3);
2869 Value* tmpVal2 = getVal(*$2, $5);
2871 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2873 GEN_ERROR("binary operator returned null");
2876 | ICMP IPredicates Types ValueRef ',' ValueRef {
2877 if (!UpRefs.empty())
2878 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2879 if (isa<VectorType>((*$3).get()))
2880 GEN_ERROR("Vector types not supported by icmp instruction");
2881 Value* tmpVal1 = getVal(*$3, $4);
2883 Value* tmpVal2 = getVal(*$3, $6);
2885 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2887 GEN_ERROR("icmp operator returned null");
2890 | FCMP FPredicates Types ValueRef ',' ValueRef {
2891 if (!UpRefs.empty())
2892 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2893 if (isa<VectorType>((*$3).get()))
2894 GEN_ERROR("Vector types not supported by fcmp instruction");
2895 Value* tmpVal1 = getVal(*$3, $4);
2897 Value* tmpVal2 = getVal(*$3, $6);
2899 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2901 GEN_ERROR("fcmp operator returned null");
2904 | VICMP IPredicates Types ValueRef ',' ValueRef {
2905 if (!UpRefs.empty())
2906 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2907 if (!isa<VectorType>((*$3).get()))
2908 GEN_ERROR("Scalar types not supported by vicmp instruction");
2909 Value* tmpVal1 = getVal(*$3, $4);
2911 Value* tmpVal2 = getVal(*$3, $6);
2913 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2915 GEN_ERROR("icmp operator returned null");
2918 | VFCMP FPredicates Types ValueRef ',' ValueRef {
2919 if (!UpRefs.empty())
2920 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
2921 if (!isa<VectorType>((*$3).get()))
2922 GEN_ERROR("Scalar types not supported by vfcmp instruction");
2923 Value* tmpVal1 = getVal(*$3, $4);
2925 Value* tmpVal2 = getVal(*$3, $6);
2927 $$ = CmpInst::create($1, $2, tmpVal1, tmpVal2);
2929 GEN_ERROR("fcmp operator returned null");
2932 | CastOps ResolvedVal TO Types {
2933 if (!UpRefs.empty())
2934 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2936 const Type* DestTy = $4->get();
2937 if (!CastInst::castIsValid($1, Val, DestTy))
2938 GEN_ERROR("invalid cast opcode for cast from '" +
2939 Val->getType()->getDescription() + "' to '" +
2940 DestTy->getDescription() + "'");
2941 $$ = CastInst::create($1, Val, DestTy);
2944 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2945 if ($2->getType() != Type::Int1Ty)
2946 GEN_ERROR("select condition must be boolean");
2947 if ($4->getType() != $6->getType())
2948 GEN_ERROR("select value types should match");
2949 $$ = SelectInst::Create($2, $4, $6);
2952 | VAARG ResolvedVal ',' Types {
2953 if (!UpRefs.empty())
2954 GEN_ERROR("Invalid upreference in type: " + (*$4)->getDescription());
2955 $$ = new VAArgInst($2, *$4);
2959 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2960 if (!ExtractElementInst::isValidOperands($2, $4))
2961 GEN_ERROR("Invalid extractelement operands");
2962 $$ = new ExtractElementInst($2, $4);
2965 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2966 if (!InsertElementInst::isValidOperands($2, $4, $6))
2967 GEN_ERROR("Invalid insertelement operands");
2968 $$ = InsertElementInst::Create($2, $4, $6);
2971 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2972 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2973 GEN_ERROR("Invalid shufflevector operands");
2974 $$ = new ShuffleVectorInst($2, $4, $6);
2978 const Type *Ty = $2->front().first->getType();
2979 if (!Ty->isFirstClassType())
2980 GEN_ERROR("PHI node operands must be of first class type");
2981 $$ = PHINode::Create(Ty);
2982 ((PHINode*)$$)->reserveOperandSpace($2->size());
2983 while ($2->begin() != $2->end()) {
2984 if ($2->front().first->getType() != Ty)
2985 GEN_ERROR("All elements of a PHI node must be of the same type");
2986 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2989 delete $2; // Free the list...
2992 | OptTailCall OptCallingConv ResultTypes ValueRef '(' ParamList ')'
2995 // Handle the short syntax
2996 const PointerType *PFTy = 0;
2997 const FunctionType *Ty = 0;
2998 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2999 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3000 // Pull out the types of all of the arguments...
3001 std::vector<const Type*> ParamTypes;
3002 ParamList::iterator I = $6->begin(), E = $6->end();
3003 for (; I != E; ++I) {
3004 const Type *Ty = I->Val->getType();
3005 if (Ty == Type::VoidTy)
3006 GEN_ERROR("Short call syntax cannot be used with varargs");
3007 ParamTypes.push_back(Ty);
3010 if (!FunctionType::isValidReturnType(*$3))
3011 GEN_ERROR("Invalid result type for LLVM function");
3013 Ty = FunctionType::get($3->get(), ParamTypes, false);
3014 PFTy = PointerType::getUnqual(Ty);
3017 Value *V = getVal(PFTy, $4); // Get the function we're calling...
3020 // Check for call to invalid intrinsic to avoid crashing later.
3021 if (Function *theF = dyn_cast<Function>(V)) {
3022 if (theF->hasName() && (theF->getValueName()->getKeyLength() >= 5) &&
3023 (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
3024 !theF->getIntrinsicID(true))
3025 GEN_ERROR("Call to invalid LLVM intrinsic function '" +
3026 theF->getName() + "'");
3029 // Set up the ParamAttrs for the function
3030 SmallVector<ParamAttrsWithIndex, 8> Attrs;
3031 if ($8 != ParamAttr::None)
3032 Attrs.push_back(ParamAttrsWithIndex::get(0, $8));
3033 // Check the arguments
3035 if ($6->empty()) { // Has no arguments?
3036 // Make sure no arguments is a good thing!
3037 if (Ty->getNumParams() != 0)
3038 GEN_ERROR("No arguments passed to a function that "
3039 "expects arguments");
3040 } else { // Has arguments?
3041 // Loop through FunctionType's arguments and ensure they are specified
3042 // correctly. Also, gather any parameter attributes.
3043 FunctionType::param_iterator I = Ty->param_begin();
3044 FunctionType::param_iterator E = Ty->param_end();
3045 ParamList::iterator ArgI = $6->begin(), ArgE = $6->end();
3048 for (; ArgI != ArgE && I != E; ++ArgI, ++I, ++index) {
3049 if (ArgI->Val->getType() != *I)
3050 GEN_ERROR("Parameter " + ArgI->Val->getName()+ " is not of type '" +
3051 (*I)->getDescription() + "'");
3052 Args.push_back(ArgI->Val);
3053 if (ArgI->Attrs != ParamAttr::None)
3054 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3056 if (Ty->isVarArg()) {
3058 for (; ArgI != ArgE; ++ArgI, ++index) {
3059 Args.push_back(ArgI->Val); // push the remaining varargs
3060 if (ArgI->Attrs != ParamAttr::None)
3061 Attrs.push_back(ParamAttrsWithIndex::get(index, ArgI->Attrs));
3063 } else if (I != E || ArgI != ArgE)
3064 GEN_ERROR("Invalid number of parameters detected");
3067 // Finish off the ParamAttrs and check them
3070 PAL = PAListPtr::get(Attrs.begin(), Attrs.end());
3072 // Create the call node
3073 CallInst *CI = CallInst::Create(V, Args.begin(), Args.end());
3074 CI->setTailCall($1);
3075 CI->setCallingConv($2);
3076 CI->setParamAttrs(PAL);
3087 OptVolatile : VOLATILE {
3098 MemoryInst : MALLOC Types OptCAlign {
3099 if (!UpRefs.empty())
3100 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3101 $$ = new MallocInst(*$2, 0, $3);
3105 | MALLOC Types ',' INTTYPE ValueRef OptCAlign {
3106 if (!UpRefs.empty())
3107 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3108 Value* tmpVal = getVal($4, $5);
3110 $$ = new MallocInst(*$2, tmpVal, $6);
3113 | ALLOCA Types OptCAlign {
3114 if (!UpRefs.empty())
3115 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3116 $$ = new AllocaInst(*$2, 0, $3);
3120 | ALLOCA Types ',' INTTYPE ValueRef OptCAlign {
3121 if (!UpRefs.empty())
3122 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3123 Value* tmpVal = getVal($4, $5);
3125 $$ = new AllocaInst(*$2, tmpVal, $6);
3128 | FREE ResolvedVal {
3129 if (!isa<PointerType>($2->getType()))
3130 GEN_ERROR("Trying to free nonpointer type " +
3131 $2->getType()->getDescription() + "");
3132 $$ = new FreeInst($2);
3136 | OptVolatile LOAD Types ValueRef OptCAlign {
3137 if (!UpRefs.empty())
3138 GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
3139 if (!isa<PointerType>($3->get()))
3140 GEN_ERROR("Can't load from nonpointer type: " +
3141 (*$3)->getDescription());
3142 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
3143 GEN_ERROR("Can't load from pointer of non-first-class type: " +
3144 (*$3)->getDescription());
3145 Value* tmpVal = getVal(*$3, $4);
3147 $$ = new LoadInst(tmpVal, "", $1, $5);
3150 | OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
3151 if (!UpRefs.empty())
3152 GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
3153 const PointerType *PT = dyn_cast<PointerType>($5->get());
3155 GEN_ERROR("Can't store to a nonpointer type: " +
3156 (*$5)->getDescription());
3157 const Type *ElTy = PT->getElementType();
3158 if (ElTy != $3->getType())
3159 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
3160 "' into space of type '" + ElTy->getDescription() + "'");
3162 Value* tmpVal = getVal(*$5, $6);
3164 $$ = new StoreInst($3, tmpVal, $1, $7);
3167 | GETRESULT Types ValueRef ',' EUINT64VAL {
3168 Value *TmpVal = getVal($2->get(), $3);
3169 if (!GetResultInst::isValidOperands(TmpVal, $5))
3170 GEN_ERROR("Invalid getresult operands");
3171 $$ = new GetResultInst(TmpVal, $5);
3175 | GETELEMENTPTR Types ValueRef IndexList {
3176 if (!UpRefs.empty())
3177 GEN_ERROR("Invalid upreference in type: " + (*$2)->getDescription());
3178 if (!isa<PointerType>($2->get()))
3179 GEN_ERROR("getelementptr insn requires pointer operand");
3181 if (!GetElementPtrInst::getIndexedType(*$2, $4->begin(), $4->end(), true))
3182 GEN_ERROR("Invalid getelementptr indices for type '" +
3183 (*$2)->getDescription()+ "'");
3184 Value* tmpVal = getVal(*$2, $3);
3186 $$ = GetElementPtrInst::Create(tmpVal, $4->begin(), $4->end());
3194 // common code from the two 'RunVMAsmParser' functions
3195 static Module* RunParser(Module * M) {
3196 CurModule.CurrentModule = M;
3197 // Check to make sure the parser succeeded
3200 delete ParserResult;
3204 // Emit an error if there are any unresolved types left.
3205 if (!CurModule.LateResolveTypes.empty()) {
3206 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
3207 if (DID.Type == ValID::LocalName) {
3208 GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
3210 GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
3213 delete ParserResult;
3217 // Emit an error if there are any unresolved values left.
3218 if (!CurModule.LateResolveValues.empty()) {
3219 Value *V = CurModule.LateResolveValues.back();
3220 std::map<Value*, std::pair<ValID, int> >::iterator I =
3221 CurModule.PlaceHolderInfo.find(V);
3223 if (I != CurModule.PlaceHolderInfo.end()) {
3224 ValID &DID = I->second.first;
3225 if (DID.Type == ValID::LocalName) {
3226 GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
3228 GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
3231 delete ParserResult;
3236 // Check to make sure that parsing produced a result
3240 // Reset ParserResult variable while saving its value for the result.
3241 Module *Result = ParserResult;
3247 void llvm::GenerateError(const std::string &message, int LineNo) {
3248 if (LineNo == -1) LineNo = LLLgetLineNo();
3249 // TODO: column number in exception
3251 TheParseError->setError(LLLgetFilename(), message, LineNo);
3255 int yyerror(const char *ErrorMsg) {
3256 std::string where = LLLgetFilename() + ":" + utostr(LLLgetLineNo()) + ": ";
3257 std::string errMsg = where + "error: " + std::string(ErrorMsg);
3258 if (yychar != YYEMPTY && yychar != 0) {
3259 errMsg += " while reading token: '";
3260 errMsg += std::string(LLLgetTokenStart(),
3261 LLLgetTokenStart()+LLLgetTokenLength()) + "'";
3263 GenerateError(errMsg);