1 //===-- llvmAsmParser.y - Parser for llvm assembly files --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the bison parser for LLVM assembly languages files.
12 //===----------------------------------------------------------------------===//
15 #include "ParserInternals.h"
16 #include "llvm/Instructions.h"
17 #include "llvm/Module.h"
18 #include "llvm/SymbolTable.h"
19 #include "llvm/Support/GetElementPtrTypeIterator.h"
20 #include "llvm/ADT/STLExtras.h"
26 int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
27 int yylex(); // declaration" of xxx warnings.
31 std::string CurFilename;
35 static Module *ParserResult;
37 // DEBUG_UPREFS - Define this symbol if you want to enable debugging output
38 // relating to upreferences in the input stream.
40 //#define DEBUG_UPREFS 1
42 #define UR_OUT(X) std::cerr << X
47 #define YYERROR_VERBOSE 1
49 // HACK ALERT: This variable is used to implement the automatic conversion of
50 // variable argument instructions from their old to new forms. When this
51 // compatiblity "Feature" is removed, this should be too.
53 static BasicBlock *CurBB;
54 static bool ObsoleteVarArgs;
57 // This contains info used when building the body of a function. It is
58 // destroyed when the function is completed.
60 typedef std::vector<Value *> ValueList; // Numbered defs
61 static void ResolveDefinitions(std::map<const Type *,ValueList> &LateResolvers,
62 std::map<const Type *,ValueList> *FutureLateResolvers = 0);
64 static struct PerModuleInfo {
65 Module *CurrentModule;
66 std::map<const Type *, ValueList> Values; // Module level numbered definitions
67 std::map<const Type *,ValueList> LateResolveValues;
68 std::vector<PATypeHolder> Types;
69 std::map<ValID, PATypeHolder> LateResolveTypes;
71 /// PlaceHolderInfo - When temporary placeholder objects are created, remember
72 /// how they were referenced and one which line of the input they came from so
73 /// that we can resolve them later and print error messages as appropriate.
74 std::map<Value*, std::pair<ValID, int> > PlaceHolderInfo;
76 // GlobalRefs - This maintains a mapping between <Type, ValID>'s and forward
77 // references to global values. Global values may be referenced before they
78 // are defined, and if so, the temporary object that they represent is held
79 // here. This is used for forward references of GlobalValues.
81 typedef std::map<std::pair<const PointerType *,
82 ValID>, GlobalValue*> GlobalRefsType;
83 GlobalRefsType GlobalRefs;
86 // If we could not resolve some functions at function compilation time
87 // (calls to functions before they are defined), resolve them now... Types
88 // are resolved when the constant pool has been completely parsed.
90 ResolveDefinitions(LateResolveValues);
92 // Check to make sure that all global value forward references have been
95 if (!GlobalRefs.empty()) {
96 std::string UndefinedReferences = "Unresolved global references exist:\n";
98 for (GlobalRefsType::iterator I = GlobalRefs.begin(), E =GlobalRefs.end();
100 UndefinedReferences += " " + I->first.first->getDescription() + " " +
101 I->first.second.getName() + "\n";
103 ThrowException(UndefinedReferences);
106 Values.clear(); // Clear out function local definitions
112 // GetForwardRefForGlobal - Check to see if there is a forward reference
113 // for this global. If so, remove it from the GlobalRefs map and return it.
114 // If not, just return null.
115 GlobalValue *GetForwardRefForGlobal(const PointerType *PTy, ValID ID) {
116 // Check to see if there is a forward reference to this global variable...
117 // if there is, eliminate it and patch the reference to use the new def'n.
118 GlobalRefsType::iterator I = GlobalRefs.find(std::make_pair(PTy, ID));
119 GlobalValue *Ret = 0;
120 if (I != GlobalRefs.end()) {
128 static struct PerFunctionInfo {
129 Function *CurrentFunction; // Pointer to current function being created
131 std::map<const Type*, ValueList> Values; // Keep track of #'d definitions
132 std::map<const Type*, ValueList> LateResolveValues;
133 std::vector<PATypeHolder> Types;
134 std::map<ValID, PATypeHolder> LateResolveTypes;
135 bool isDeclare; // Is this function a forward declararation?
137 /// BBForwardRefs - When we see forward references to basic blocks, keep
138 /// track of them here.
139 std::map<BasicBlock*, std::pair<ValID, int> > BBForwardRefs;
140 std::vector<BasicBlock*> NumberedBlocks;
143 inline PerFunctionInfo() {
148 inline void FunctionStart(Function *M) {
153 void FunctionDone() {
154 NumberedBlocks.clear();
156 // Any forward referenced blocks left?
157 if (!BBForwardRefs.empty())
158 ThrowException("Undefined reference to label " +
159 BBForwardRefs.begin()->first->getName());
161 // Resolve all forward references now.
162 ResolveDefinitions(LateResolveValues, &CurModule.LateResolveValues);
164 Values.clear(); // Clear out function local definitions
165 Types.clear(); // Clear out function local types
169 } CurFun; // Info for the current function...
171 static bool inFunctionScope() { return CurFun.CurrentFunction != 0; }
174 //===----------------------------------------------------------------------===//
175 // Code to handle definitions of all the types
176 //===----------------------------------------------------------------------===//
178 static int InsertValue(Value *V,
179 std::map<const Type*,ValueList> &ValueTab = CurFun.Values) {
180 if (V->hasName()) return -1; // Is this a numbered definition?
182 // Yes, insert the value into the value table...
183 ValueList &List = ValueTab[V->getType()];
185 return List.size()-1;
188 static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
190 case ValID::NumberVal: // Is it a numbered definition?
191 // Module constants occupy the lowest numbered slots...
192 if ((unsigned)D.Num < CurModule.Types.size())
193 return CurModule.Types[(unsigned)D.Num];
195 case ValID::NameVal: // Is it a named definition?
196 if (const Type *N = CurModule.CurrentModule->getTypeByName(D.Name)) {
197 D.destroy(); // Free old strdup'd memory...
202 ThrowException("Internal parser error: Invalid symbol type reference!");
205 // If we reached here, we referenced either a symbol that we don't know about
206 // or an id number that hasn't been read yet. We may be referencing something
207 // forward, so just create an entry to be resolved later and get to it...
209 if (DoNotImprovise) return 0; // Do we just want a null to be returned?
211 std::map<ValID, PATypeHolder> &LateResolver = inFunctionScope() ?
212 CurFun.LateResolveTypes : CurModule.LateResolveTypes;
214 std::map<ValID, PATypeHolder>::iterator I = LateResolver.find(D);
215 if (I != LateResolver.end()) {
219 Type *Typ = OpaqueType::get();
220 LateResolver.insert(std::make_pair(D, Typ));
224 static Value *lookupInSymbolTable(const Type *Ty, const std::string &Name) {
225 SymbolTable &SymTab =
226 inFunctionScope() ? CurFun.CurrentFunction->getSymbolTable() :
227 CurModule.CurrentModule->getSymbolTable();
228 return SymTab.lookup(Ty, Name);
231 // getValNonImprovising - Look up the value specified by the provided type and
232 // the provided ValID. If the value exists and has already been defined, return
233 // it. Otherwise return null.
235 static Value *getValNonImprovising(const Type *Ty, const ValID &D) {
236 if (isa<FunctionType>(Ty))
237 ThrowException("Functions are not values and "
238 "must be referenced as pointers");
241 case ValID::NumberVal: { // Is it a numbered definition?
242 unsigned Num = (unsigned)D.Num;
244 // Module constants occupy the lowest numbered slots...
245 std::map<const Type*,ValueList>::iterator VI = CurModule.Values.find(Ty);
246 if (VI != CurModule.Values.end()) {
247 if (Num < VI->second.size())
248 return VI->second[Num];
249 Num -= VI->second.size();
252 // Make sure that our type is within bounds
253 VI = CurFun.Values.find(Ty);
254 if (VI == CurFun.Values.end()) return 0;
256 // Check that the number is within bounds...
257 if (VI->second.size() <= Num) return 0;
259 return VI->second[Num];
262 case ValID::NameVal: { // Is it a named definition?
263 Value *N = lookupInSymbolTable(Ty, std::string(D.Name));
264 if (N == 0) return 0;
266 D.destroy(); // Free old strdup'd memory...
270 // Check to make sure that "Ty" is an integral type, and that our
271 // value will fit into the specified type...
272 case ValID::ConstSIntVal: // Is it a constant pool reference??
273 if (!ConstantSInt::isValueValidForType(Ty, D.ConstPool64))
274 ThrowException("Signed integral constant '" +
275 itostr(D.ConstPool64) + "' is invalid for type '" +
276 Ty->getDescription() + "'!");
277 return ConstantSInt::get(Ty, D.ConstPool64);
279 case ValID::ConstUIntVal: // Is it an unsigned const pool reference?
280 if (!ConstantUInt::isValueValidForType(Ty, D.UConstPool64)) {
281 if (!ConstantSInt::isValueValidForType(Ty, D.ConstPool64)) {
282 ThrowException("Integral constant '" + utostr(D.UConstPool64) +
283 "' is invalid or out of range!");
284 } else { // This is really a signed reference. Transmogrify.
285 return ConstantSInt::get(Ty, D.ConstPool64);
288 return ConstantUInt::get(Ty, D.UConstPool64);
291 case ValID::ConstFPVal: // Is it a floating point const pool reference?
292 if (!ConstantFP::isValueValidForType(Ty, D.ConstPoolFP))
293 ThrowException("FP constant invalid for type!!");
294 return ConstantFP::get(Ty, D.ConstPoolFP);
296 case ValID::ConstNullVal: // Is it a null value?
297 if (!isa<PointerType>(Ty))
298 ThrowException("Cannot create a a non pointer null!");
299 return ConstantPointerNull::get(cast<PointerType>(Ty));
301 case ValID::ConstUndefVal: // Is it an undef value?
302 return UndefValue::get(Ty);
304 case ValID::ConstantVal: // Fully resolved constant?
305 if (D.ConstantValue->getType() != Ty)
306 ThrowException("Constant expression type different from required type!");
307 return D.ConstantValue;
310 assert(0 && "Unhandled case!");
314 assert(0 && "Unhandled case!");
318 // getVal - This function is identical to getValNonImprovising, except that if a
319 // value is not already defined, it "improvises" by creating a placeholder var
320 // that looks and acts just like the requested variable. When the value is
321 // defined later, all uses of the placeholder variable are replaced with the
324 static Value *getVal(const Type *Ty, const ValID &ID) {
325 if (Ty == Type::LabelTy)
326 ThrowException("Cannot use a basic block here");
328 // See if the value has already been defined.
329 Value *V = getValNonImprovising(Ty, ID);
332 // If we reached here, we referenced either a symbol that we don't know about
333 // or an id number that hasn't been read yet. We may be referencing something
334 // forward, so just create an entry to be resolved later and get to it...
336 V = new Argument(Ty);
338 // Remember where this forward reference came from. FIXME, shouldn't we try
339 // to recycle these things??
340 CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
343 if (inFunctionScope())
344 InsertValue(V, CurFun.LateResolveValues);
346 InsertValue(V, CurModule.LateResolveValues);
350 /// getBBVal - This is used for two purposes:
351 /// * If isDefinition is true, a new basic block with the specified ID is being
353 /// * If isDefinition is true, this is a reference to a basic block, which may
354 /// or may not be a forward reference.
356 static BasicBlock *getBBVal(const ValID &ID, bool isDefinition = false) {
357 assert(inFunctionScope() && "Can't get basic block at global scope!");
362 default: ThrowException("Illegal label reference " + ID.getName());
363 case ValID::NumberVal: // Is it a numbered definition?
364 if (unsigned(ID.Num) >= CurFun.NumberedBlocks.size())
365 CurFun.NumberedBlocks.resize(ID.Num+1);
366 BB = CurFun.NumberedBlocks[ID.Num];
368 case ValID::NameVal: // Is it a named definition?
370 if (Value *N = CurFun.CurrentFunction->
371 getSymbolTable().lookup(Type::LabelTy, Name))
372 BB = cast<BasicBlock>(N);
376 // See if the block has already been defined.
378 // If this is the definition of the block, make sure the existing value was
379 // just a forward reference. If it was a forward reference, there will be
380 // an entry for it in the PlaceHolderInfo map.
381 if (isDefinition && !CurFun.BBForwardRefs.erase(BB))
382 // The existing value was a definition, not a forward reference.
383 ThrowException("Redefinition of label " + ID.getName());
385 ID.destroy(); // Free strdup'd memory.
389 // Otherwise this block has not been seen before.
390 BB = new BasicBlock("", CurFun.CurrentFunction);
391 if (ID.Type == ValID::NameVal) {
392 BB->setName(ID.Name);
394 CurFun.NumberedBlocks[ID.Num] = BB;
397 // If this is not a definition, keep track of it so we can use it as a forward
400 // Remember where this forward reference came from.
401 CurFun.BBForwardRefs[BB] = std::make_pair(ID, llvmAsmlineno);
403 // The forward declaration could have been inserted anywhere in the
404 // function: insert it into the correct place now.
405 CurFun.CurrentFunction->getBasicBlockList().remove(BB);
406 CurFun.CurrentFunction->getBasicBlockList().push_back(BB);
413 //===----------------------------------------------------------------------===//
414 // Code to handle forward references in instructions
415 //===----------------------------------------------------------------------===//
417 // This code handles the late binding needed with statements that reference
418 // values not defined yet... for example, a forward branch, or the PHI node for
421 // This keeps a table (CurFun.LateResolveValues) of all such forward references
422 // and back patchs after we are done.
425 // ResolveDefinitions - If we could not resolve some defs at parsing
426 // time (forward branches, phi functions for loops, etc...) resolve the
429 static void ResolveDefinitions(std::map<const Type*,ValueList> &LateResolvers,
430 std::map<const Type*,ValueList> *FutureLateResolvers) {
431 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
432 for (std::map<const Type*,ValueList>::iterator LRI = LateResolvers.begin(),
433 E = LateResolvers.end(); LRI != E; ++LRI) {
434 ValueList &List = LRI->second;
435 while (!List.empty()) {
436 Value *V = List.back();
439 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
440 CurModule.PlaceHolderInfo.find(V);
441 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
443 ValID &DID = PHI->second.first;
445 Value *TheRealValue = getValNonImprovising(LRI->first, DID);
447 V->replaceAllUsesWith(TheRealValue);
449 CurModule.PlaceHolderInfo.erase(PHI);
450 } else if (FutureLateResolvers) {
451 // Functions have their unresolved items forwarded to the module late
453 InsertValue(V, *FutureLateResolvers);
455 if (DID.Type == ValID::NameVal)
456 ThrowException("Reference to an invalid definition: '" +DID.getName()+
457 "' of type '" + V->getType()->getDescription() + "'",
460 ThrowException("Reference to an invalid definition: #" +
461 itostr(DID.Num) + " of type '" +
462 V->getType()->getDescription() + "'",
468 LateResolvers.clear();
471 // ResolveTypeTo - A brand new type was just declared. This means that (if
472 // name is not null) things referencing Name can be resolved. Otherwise, things
473 // refering to the number can be resolved. Do this now.
475 static void ResolveTypeTo(char *Name, const Type *ToTy) {
476 std::vector<PATypeHolder> &Types = inFunctionScope() ?
477 CurFun.Types : CurModule.Types;
480 if (Name) D = ValID::create(Name);
481 else D = ValID::create((int)Types.size());
483 std::map<ValID, PATypeHolder> &LateResolver = inFunctionScope() ?
484 CurFun.LateResolveTypes : CurModule.LateResolveTypes;
486 std::map<ValID, PATypeHolder>::iterator I = LateResolver.find(D);
487 if (I != LateResolver.end()) {
488 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
489 LateResolver.erase(I);
493 // ResolveTypes - At this point, all types should be resolved. Any that aren't
496 static void ResolveTypes(std::map<ValID, PATypeHolder> &LateResolveTypes) {
497 if (!LateResolveTypes.empty()) {
498 const ValID &DID = LateResolveTypes.begin()->first;
500 if (DID.Type == ValID::NameVal)
501 ThrowException("Reference to an invalid type: '" +DID.getName() + "'");
503 ThrowException("Reference to an invalid type: #" + itostr(DID.Num));
507 // setValueName - Set the specified value to the name given. The name may be
508 // null potentially, in which case this is a noop. The string passed in is
509 // assumed to be a malloc'd string buffer, and is free'd by this function.
511 static void setValueName(Value *V, char *NameStr) {
513 std::string Name(NameStr); // Copy string
514 free(NameStr); // Free old string
516 if (V->getType() == Type::VoidTy)
517 ThrowException("Can't assign name '" + Name+"' to value with void type!");
519 assert(inFunctionScope() && "Must be in function scope!");
520 SymbolTable &ST = CurFun.CurrentFunction->getSymbolTable();
521 if (ST.lookup(V->getType(), Name))
522 ThrowException("Redefinition of value named '" + Name + "' in the '" +
523 V->getType()->getDescription() + "' type plane!");
526 V->setName(Name, &ST);
530 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
531 /// this is a declaration, otherwise it is a definition.
532 static void ParseGlobalVariable(char *NameStr,GlobalValue::LinkageTypes Linkage,
533 bool isConstantGlobal, const Type *Ty,
534 Constant *Initializer) {
535 if (isa<FunctionType>(Ty))
536 ThrowException("Cannot declare global vars of function type!");
538 const PointerType *PTy = PointerType::get(Ty);
542 Name = NameStr; // Copy string
543 free(NameStr); // Free old string
546 // See if this global value was forward referenced. If so, recycle the
550 ID = ValID::create((char*)Name.c_str());
552 ID = ValID::create((int)CurModule.Values[PTy].size());
555 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
556 // Move the global to the end of the list, from whereever it was
557 // previously inserted.
558 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
559 CurModule.CurrentModule->getGlobalList().remove(GV);
560 CurModule.CurrentModule->getGlobalList().push_back(GV);
561 GV->setInitializer(Initializer);
562 GV->setLinkage(Linkage);
563 GV->setConstant(isConstantGlobal);
564 InsertValue(GV, CurModule.Values);
568 // If this global has a name, check to see if there is already a definition
569 // of this global in the module. If so, merge as appropriate. Note that
570 // this is really just a hack around problems in the CFE. :(
572 // We are a simple redefinition of a value, check to see if it is defined
573 // the same as the old one.
574 if (GlobalVariable *EGV =
575 CurModule.CurrentModule->getGlobalVariable(Name, Ty)) {
576 // We are allowed to redefine a global variable in two circumstances:
577 // 1. If at least one of the globals is uninitialized or
578 // 2. If both initializers have the same value.
580 if (!EGV->hasInitializer() || !Initializer ||
581 EGV->getInitializer() == Initializer) {
583 // Make sure the existing global version gets the initializer! Make
584 // sure that it also gets marked const if the new version is.
585 if (Initializer && !EGV->hasInitializer())
586 EGV->setInitializer(Initializer);
587 if (isConstantGlobal)
588 EGV->setConstant(true);
589 EGV->setLinkage(Linkage);
593 ThrowException("Redefinition of global variable named '" + Name +
594 "' in the '" + Ty->getDescription() + "' type plane!");
598 // Otherwise there is no existing GV to use, create one now.
600 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
601 CurModule.CurrentModule);
602 InsertValue(GV, CurModule.Values);
605 // setTypeName - Set the specified type to the name given. The name may be
606 // null potentially, in which case this is a noop. The string passed in is
607 // assumed to be a malloc'd string buffer, and is freed by this function.
609 // This function returns true if the type has already been defined, but is
610 // allowed to be redefined in the specified context. If the name is a new name
611 // for the type plane, it is inserted and false is returned.
612 static bool setTypeName(const Type *T, char *NameStr) {
613 assert(!inFunctionScope() && "Can't give types function-local names!");
614 if (NameStr == 0) return false;
616 std::string Name(NameStr); // Copy string
617 free(NameStr); // Free old string
619 // We don't allow assigning names to void type
620 if (T == Type::VoidTy)
621 ThrowException("Can't assign name '" + Name + "' to the void type!");
623 // Set the type name, checking for conflicts as we do so.
624 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
626 if (AlreadyExists) { // Inserting a name that is already defined???
627 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
628 assert(Existing && "Conflict but no matching type?");
630 // There is only one case where this is allowed: when we are refining an
631 // opaque type. In this case, Existing will be an opaque type.
632 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
633 // We ARE replacing an opaque type!
634 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
638 // Otherwise, this is an attempt to redefine a type. That's okay if
639 // the redefinition is identical to the original. This will be so if
640 // Existing and T point to the same Type object. In this one case we
641 // allow the equivalent redefinition.
642 if (Existing == T) return true; // Yes, it's equal.
644 // Any other kind of (non-equivalent) redefinition is an error.
645 ThrowException("Redefinition of type named '" + Name + "' in the '" +
646 T->getDescription() + "' type plane!");
652 //===----------------------------------------------------------------------===//
653 // Code for handling upreferences in type names...
656 // TypeContains - Returns true if Ty directly contains E in it.
658 static bool TypeContains(const Type *Ty, const Type *E) {
659 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
660 E) != Ty->subtype_end();
665 // NestingLevel - The number of nesting levels that need to be popped before
666 // this type is resolved.
667 unsigned NestingLevel;
669 // LastContainedTy - This is the type at the current binding level for the
670 // type. Every time we reduce the nesting level, this gets updated.
671 const Type *LastContainedTy;
673 // UpRefTy - This is the actual opaque type that the upreference is
677 UpRefRecord(unsigned NL, OpaqueType *URTy)
678 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
682 // UpRefs - A list of the outstanding upreferences that need to be resolved.
683 static std::vector<UpRefRecord> UpRefs;
685 /// HandleUpRefs - Every time we finish a new layer of types, this function is
686 /// called. It loops through the UpRefs vector, which is a list of the
687 /// currently active types. For each type, if the up reference is contained in
688 /// the newly completed type, we decrement the level count. When the level
689 /// count reaches zero, the upreferenced type is the type that is passed in:
690 /// thus we can complete the cycle.
692 static PATypeHolder HandleUpRefs(const Type *ty) {
693 if (!ty->isAbstract()) return ty;
695 UR_OUT("Type '" << Ty->getDescription() <<
696 "' newly formed. Resolving upreferences.\n" <<
697 UpRefs.size() << " upreferences active!\n");
699 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
700 // to zero), we resolve them all together before we resolve them to Ty. At
701 // the end of the loop, if there is anything to resolve to Ty, it will be in
703 OpaqueType *TypeToResolve = 0;
705 for (unsigned i = 0; i != UpRefs.size(); ++i) {
706 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
707 << UpRefs[i].second->getDescription() << ") = "
708 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
709 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
710 // Decrement level of upreference
711 unsigned Level = --UpRefs[i].NestingLevel;
712 UpRefs[i].LastContainedTy = Ty;
713 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
714 if (Level == 0) { // Upreference should be resolved!
715 if (!TypeToResolve) {
716 TypeToResolve = UpRefs[i].UpRefTy;
718 UR_OUT(" * Resolving upreference for "
719 << UpRefs[i].second->getDescription() << "\n";
720 std::string OldName = UpRefs[i].UpRefTy->getDescription());
721 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
722 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
723 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
725 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
726 --i; // Do not skip the next element...
732 UR_OUT(" * Resolving upreference for "
733 << UpRefs[i].second->getDescription() << "\n";
734 std::string OldName = TypeToResolve->getDescription());
735 TypeToResolve->refineAbstractTypeTo(Ty);
742 //===----------------------------------------------------------------------===//
743 // RunVMAsmParser - Define an interface to this parser
744 //===----------------------------------------------------------------------===//
746 Module *llvm::RunVMAsmParser(const std::string &Filename, FILE *F) {
748 CurFilename = Filename;
749 llvmAsmlineno = 1; // Reset the current line number...
750 ObsoleteVarArgs = false;
752 // Allocate a new module to read
753 CurModule.CurrentModule = new Module(Filename);
755 yyparse(); // Parse the file, potentially throwing exception
757 Module *Result = ParserResult;
759 // Check to see if they called va_start but not va_arg..
760 if (!ObsoleteVarArgs)
761 if (Function *F = Result->getNamedFunction("llvm.va_start"))
762 if (F->asize() == 1) {
763 std::cerr << "WARNING: this file uses obsolete features. "
764 << "Assemble and disassemble to update it.\n";
765 ObsoleteVarArgs = true;
768 if (ObsoleteVarArgs) {
769 // If the user is making use of obsolete varargs intrinsics, adjust them for
771 if (Function *F = Result->getNamedFunction("llvm.va_start")) {
772 assert(F->asize() == 1 && "Obsolete va_start takes 1 argument!");
774 const Type *RetTy = F->getFunctionType()->getParamType(0);
775 RetTy = cast<PointerType>(RetTy)->getElementType();
776 Function *NF = Result->getOrInsertFunction("llvm.va_start", RetTy, 0);
778 while (!F->use_empty()) {
779 CallInst *CI = cast<CallInst>(F->use_back());
780 Value *V = new CallInst(NF, "", CI);
781 new StoreInst(V, CI->getOperand(1), CI);
782 CI->getParent()->getInstList().erase(CI);
784 Result->getFunctionList().erase(F);
787 if (Function *F = Result->getNamedFunction("llvm.va_end")) {
788 assert(F->asize() == 1 && "Obsolete va_end takes 1 argument!");
789 const Type *ArgTy = F->getFunctionType()->getParamType(0);
790 ArgTy = cast<PointerType>(ArgTy)->getElementType();
791 Function *NF = Result->getOrInsertFunction("llvm.va_end", Type::VoidTy,
794 while (!F->use_empty()) {
795 CallInst *CI = cast<CallInst>(F->use_back());
796 Value *V = new LoadInst(CI->getOperand(1), "", CI);
797 new CallInst(NF, V, "", CI);
798 CI->getParent()->getInstList().erase(CI);
800 Result->getFunctionList().erase(F);
803 if (Function *F = Result->getNamedFunction("llvm.va_copy")) {
804 assert(F->asize() == 2 && "Obsolete va_copy takes 2 argument!");
805 const Type *ArgTy = F->getFunctionType()->getParamType(0);
806 ArgTy = cast<PointerType>(ArgTy)->getElementType();
807 Function *NF = Result->getOrInsertFunction("llvm.va_copy", ArgTy,
810 while (!F->use_empty()) {
811 CallInst *CI = cast<CallInst>(F->use_back());
812 Value *V = new CallInst(NF, CI->getOperand(2), "", CI);
813 new StoreInst(V, CI->getOperand(1), CI);
814 CI->getParent()->getInstList().erase(CI);
816 Result->getFunctionList().erase(F);
820 llvmAsmin = stdin; // F is about to go away, don't use it anymore...
829 llvm::Module *ModuleVal;
830 llvm::Function *FunctionVal;
831 std::pair<llvm::PATypeHolder*, char*> *ArgVal;
832 llvm::BasicBlock *BasicBlockVal;
833 llvm::TerminatorInst *TermInstVal;
834 llvm::Instruction *InstVal;
835 llvm::Constant *ConstVal;
837 const llvm::Type *PrimType;
838 llvm::PATypeHolder *TypeVal;
839 llvm::Value *ValueVal;
841 std::vector<std::pair<llvm::PATypeHolder*,char*> > *ArgList;
842 std::vector<llvm::Value*> *ValueList;
843 std::list<llvm::PATypeHolder> *TypeList;
844 std::list<std::pair<llvm::Value*,
845 llvm::BasicBlock*> > *PHIList; // Represent the RHS of PHI node
846 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
847 std::vector<llvm::Constant*> *ConstVector;
849 llvm::GlobalValue::LinkageTypes Linkage;
857 char *StrVal; // This memory is strdup'd!
858 llvm::ValID ValIDVal; // strdup'd memory maybe!
860 llvm::Instruction::BinaryOps BinaryOpVal;
861 llvm::Instruction::TermOps TermOpVal;
862 llvm::Instruction::MemoryOps MemOpVal;
863 llvm::Instruction::OtherOps OtherOpVal;
864 llvm::Module::Endianness Endianness;
867 %type <ModuleVal> Module FunctionList
868 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
869 %type <BasicBlockVal> BasicBlock InstructionList
870 %type <TermInstVal> BBTerminatorInst
871 %type <InstVal> Inst InstVal MemoryInst
872 %type <ConstVal> ConstVal ConstExpr
873 %type <ConstVector> ConstVector
874 %type <ArgList> ArgList ArgListH
875 %type <ArgVal> ArgVal
876 %type <PHIList> PHIList
877 %type <ValueList> ValueRefList ValueRefListE // For call param lists
878 %type <ValueList> IndexList // For GEP derived indices
879 %type <TypeList> TypeListI ArgTypeListI
880 %type <JumpTable> JumpTable
881 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
882 %type <BoolVal> OptVolatile // 'volatile' or not
883 %type <Linkage> OptLinkage
884 %type <Endianness> BigOrLittle
886 // ValueRef - Unresolved reference to a definition or BB
887 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
888 %type <ValueVal> ResolvedVal // <type> <valref> pair
889 // Tokens and types for handling constant integer values
891 // ESINT64VAL - A negative number within long long range
892 %token <SInt64Val> ESINT64VAL
894 // EUINT64VAL - A positive number within uns. long long range
895 %token <UInt64Val> EUINT64VAL
896 %type <SInt64Val> EINT64VAL
898 %token <SIntVal> SINTVAL // Signed 32 bit ints...
899 %token <UIntVal> UINTVAL // Unsigned 32 bit ints...
900 %type <SIntVal> INTVAL
901 %token <FPVal> FPVAL // Float or Double constant
904 %type <TypeVal> Types TypesV UpRTypes UpRTypesV
905 %type <PrimType> SIntType UIntType IntType FPType PrimType // Classifications
906 %token <PrimType> VOID BOOL SBYTE UBYTE SHORT USHORT INT UINT LONG ULONG
907 %token <PrimType> FLOAT DOUBLE TYPE LABEL
909 %token <StrVal> VAR_ID LABELSTR STRINGCONSTANT
910 %type <StrVal> Name OptName OptAssign
913 %token IMPLEMENTATION ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
914 %token DECLARE GLOBAL CONSTANT VOLATILE
915 %token TO DOTDOTDOT NULL_TOK UNDEF CONST INTERNAL LINKONCE WEAK APPENDING
916 %token OPAQUE NOT EXTERNAL TARGET TRIPLE ENDIAN POINTERSIZE LITTLE BIG
919 // Basic Block Terminating Operators
920 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
923 %type <BinaryOpVal> ArithmeticOps LogicalOps SetCondOps // Binops Subcatagories
924 %token <BinaryOpVal> ADD SUB MUL DIV REM AND OR XOR
925 %token <BinaryOpVal> SETLE SETGE SETLT SETGT SETEQ SETNE // Binary Comarators
927 // Memory Instructions
928 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
931 %type <OtherOpVal> ShiftOps
932 %token <OtherOpVal> PHI_TOK CALL CAST SELECT SHL SHR VAARG VANEXT
933 %token VA_ARG // FIXME: OBSOLETE
938 // Handle constant integer size restriction and conversion...
942 if ($1 > (uint32_t)INT32_MAX) // Outside of my range!
943 ThrowException("Value too large for type!");
948 EINT64VAL : ESINT64VAL; // These have same type and can't cause problems...
949 EINT64VAL : EUINT64VAL {
950 if ($1 > (uint64_t)INT64_MAX) // Outside of my range!
951 ThrowException("Value too large for type!");
955 // Operations that are notably excluded from this list include:
956 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
958 ArithmeticOps: ADD | SUB | MUL | DIV | REM;
959 LogicalOps : AND | OR | XOR;
960 SetCondOps : SETLE | SETGE | SETLT | SETGT | SETEQ | SETNE;
962 ShiftOps : SHL | SHR;
964 // These are some types that allow classification if we only want a particular
965 // thing... for example, only a signed, unsigned, or integral type.
966 SIntType : LONG | INT | SHORT | SBYTE;
967 UIntType : ULONG | UINT | USHORT | UBYTE;
968 IntType : SIntType | UIntType;
969 FPType : FLOAT | DOUBLE;
971 // OptAssign - Value producing statements have an optional assignment component
972 OptAssign : Name '=' {
979 OptLinkage : INTERNAL { $$ = GlobalValue::InternalLinkage; } |
980 LINKONCE { $$ = GlobalValue::LinkOnceLinkage; } |
981 WEAK { $$ = GlobalValue::WeakLinkage; } |
982 APPENDING { $$ = GlobalValue::AppendingLinkage; } |
983 /*empty*/ { $$ = GlobalValue::ExternalLinkage; };
985 //===----------------------------------------------------------------------===//
986 // Types includes all predefined types... except void, because it can only be
987 // used in specific contexts (function returning void for example). To have
988 // access to it, a user must explicitly use TypesV.
991 // TypesV includes all of 'Types', but it also includes the void type.
992 TypesV : Types | VOID { $$ = new PATypeHolder($1); };
993 UpRTypesV : UpRTypes | VOID { $$ = new PATypeHolder($1); };
997 ThrowException("Invalid upreference in type: " + (*$1)->getDescription());
1002 // Derived types are added later...
1004 PrimType : BOOL | SBYTE | UBYTE | SHORT | USHORT | INT | UINT ;
1005 PrimType : LONG | ULONG | FLOAT | DOUBLE | TYPE | LABEL;
1007 $$ = new PATypeHolder(OpaqueType::get());
1010 $$ = new PATypeHolder($1);
1012 UpRTypes : SymbolicValueRef { // Named types are also simple types...
1013 $$ = new PATypeHolder(getTypeVal($1));
1016 // Include derived types in the Types production.
1018 UpRTypes : '\\' EUINT64VAL { // Type UpReference
1019 if ($2 > (uint64_t)~0U) ThrowException("Value out of range!");
1020 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1021 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1022 $$ = new PATypeHolder(OT);
1023 UR_OUT("New Upreference!\n");
1025 | UpRTypesV '(' ArgTypeListI ')' { // Function derived type?
1026 std::vector<const Type*> Params;
1027 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1028 E = $3->end(); I != E; ++I)
1029 Params.push_back(*I);
1030 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1031 if (isVarArg) Params.pop_back();
1033 $$ = new PATypeHolder(HandleUpRefs(FunctionType::get(*$1,Params,isVarArg)));
1034 delete $3; // Delete the argument list
1035 delete $1; // Delete the return type handle
1037 | '[' EUINT64VAL 'x' UpRTypes ']' { // Sized array type?
1038 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1041 | '<' EUINT64VAL 'x' UpRTypes '>' { // Packed array type?
1042 const llvm::Type* ElemTy = $4->get();
1043 if ((unsigned)$2 != $2) {
1044 ThrowException("Unsigned result not equal to signed result");
1046 if(!ElemTy->isPrimitiveType()) {
1047 ThrowException("Elemental type of a PackedType must be primitive");
1049 $$ = new PATypeHolder(HandleUpRefs(PackedType::get(*$4, (unsigned)$2)));
1052 | '{' TypeListI '}' { // Structure type?
1053 std::vector<const Type*> Elements;
1054 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1055 E = $2->end(); I != E; ++I)
1056 Elements.push_back(*I);
1058 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1061 | '{' '}' { // Empty structure type?
1062 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1064 | UpRTypes '*' { // Pointer type?
1065 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1)));
1069 // TypeList - Used for struct declarations and as a basis for function type
1070 // declaration type lists
1072 TypeListI : UpRTypes {
1073 $$ = new std::list<PATypeHolder>();
1074 $$->push_back(*$1); delete $1;
1076 | TypeListI ',' UpRTypes {
1077 ($$=$1)->push_back(*$3); delete $3;
1080 // ArgTypeList - List of types for a function type declaration...
1081 ArgTypeListI : TypeListI
1082 | TypeListI ',' DOTDOTDOT {
1083 ($$=$1)->push_back(Type::VoidTy);
1086 ($$ = new std::list<PATypeHolder>())->push_back(Type::VoidTy);
1089 $$ = new std::list<PATypeHolder>();
1092 // ConstVal - The various declarations that go into the constant pool. This
1093 // production is used ONLY to represent constants that show up AFTER a 'const',
1094 // 'constant' or 'global' token at global scope. Constants that can be inlined
1095 // into other expressions (such as integers and constexprs) are handled by the
1096 // ResolvedVal, ValueRef and ConstValueRef productions.
1098 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1099 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1101 ThrowException("Cannot make array constant with type: '" +
1102 (*$1)->getDescription() + "'!");
1103 const Type *ETy = ATy->getElementType();
1104 int NumElements = ATy->getNumElements();
1106 // Verify that we have the correct size...
1107 if (NumElements != -1 && NumElements != (int)$3->size())
1108 ThrowException("Type mismatch: constant sized array initialized with " +
1109 utostr($3->size()) + " arguments, but has size of " +
1110 itostr(NumElements) + "!");
1112 // Verify all elements are correct type!
1113 for (unsigned i = 0; i < $3->size(); i++) {
1114 if (ETy != (*$3)[i]->getType())
1115 ThrowException("Element #" + utostr(i) + " is not of type '" +
1116 ETy->getDescription() +"' as required!\nIt is of type '"+
1117 (*$3)[i]->getType()->getDescription() + "'.");
1120 $$ = ConstantArray::get(ATy, *$3);
1121 delete $1; delete $3;
1124 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1126 ThrowException("Cannot make array constant with type: '" +
1127 (*$1)->getDescription() + "'!");
1129 int NumElements = ATy->getNumElements();
1130 if (NumElements != -1 && NumElements != 0)
1131 ThrowException("Type mismatch: constant sized array initialized with 0"
1132 " arguments, but has size of " + itostr(NumElements) +"!");
1133 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1136 | Types 'c' STRINGCONSTANT {
1137 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1139 ThrowException("Cannot make array constant with type: '" +
1140 (*$1)->getDescription() + "'!");
1142 int NumElements = ATy->getNumElements();
1143 const Type *ETy = ATy->getElementType();
1144 char *EndStr = UnEscapeLexed($3, true);
1145 if (NumElements != -1 && NumElements != (EndStr-$3))
1146 ThrowException("Can't build string constant of size " +
1147 itostr((int)(EndStr-$3)) +
1148 " when array has size " + itostr(NumElements) + "!");
1149 std::vector<Constant*> Vals;
1150 if (ETy == Type::SByteTy) {
1151 for (char *C = $3; C != EndStr; ++C)
1152 Vals.push_back(ConstantSInt::get(ETy, *C));
1153 } else if (ETy == Type::UByteTy) {
1154 for (char *C = $3; C != EndStr; ++C)
1155 Vals.push_back(ConstantUInt::get(ETy, (unsigned char)*C));
1158 ThrowException("Cannot build string arrays of non byte sized elements!");
1161 $$ = ConstantArray::get(ATy, Vals);
1164 | Types '<' ConstVector '>' { // Nonempty unsized arr
1165 const PackedType *PTy = dyn_cast<PackedType>($1->get());
1167 ThrowException("Cannot make packed constant with type: '" +
1168 (*$1)->getDescription() + "'!");
1169 const Type *ETy = PTy->getElementType();
1170 int NumElements = PTy->getNumElements();
1172 // Verify that we have the correct size...
1173 if (NumElements != -1 && NumElements != (int)$3->size())
1174 ThrowException("Type mismatch: constant sized packed initialized with " +
1175 utostr($3->size()) + " arguments, but has size of " +
1176 itostr(NumElements) + "!");
1178 // Verify all elements are correct type!
1179 for (unsigned i = 0; i < $3->size(); i++) {
1180 if (ETy != (*$3)[i]->getType())
1181 ThrowException("Element #" + utostr(i) + " is not of type '" +
1182 ETy->getDescription() +"' as required!\nIt is of type '"+
1183 (*$3)[i]->getType()->getDescription() + "'.");
1186 $$ = ConstantPacked::get(PTy, *$3);
1187 delete $1; delete $3;
1189 | Types '{' ConstVector '}' {
1190 const StructType *STy = dyn_cast<StructType>($1->get());
1192 ThrowException("Cannot make struct constant with type: '" +
1193 (*$1)->getDescription() + "'!");
1195 if ($3->size() != STy->getNumContainedTypes())
1196 ThrowException("Illegal number of initializers for structure type!");
1198 // Check to ensure that constants are compatible with the type initializer!
1199 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1200 if ((*$3)[i]->getType() != STy->getElementType(i))
1201 ThrowException("Expected type '" +
1202 STy->getElementType(i)->getDescription() +
1203 "' for element #" + utostr(i) +
1204 " of structure initializer!");
1206 $$ = ConstantStruct::get(STy, *$3);
1207 delete $1; delete $3;
1210 const StructType *STy = dyn_cast<StructType>($1->get());
1212 ThrowException("Cannot make struct constant with type: '" +
1213 (*$1)->getDescription() + "'!");
1215 if (STy->getNumContainedTypes() != 0)
1216 ThrowException("Illegal number of initializers for structure type!");
1218 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1222 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1224 ThrowException("Cannot make null pointer constant with type: '" +
1225 (*$1)->getDescription() + "'!");
1227 $$ = ConstantPointerNull::get(PTy);
1231 $$ = UndefValue::get($1->get());
1234 | Types SymbolicValueRef {
1235 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1237 ThrowException("Global const reference must be a pointer type!");
1239 // ConstExprs can exist in the body of a function, thus creating
1240 // GlobalValues whenever they refer to a variable. Because we are in
1241 // the context of a function, getValNonImprovising will search the functions
1242 // symbol table instead of the module symbol table for the global symbol,
1243 // which throws things all off. To get around this, we just tell
1244 // getValNonImprovising that we are at global scope here.
1246 Function *SavedCurFn = CurFun.CurrentFunction;
1247 CurFun.CurrentFunction = 0;
1249 Value *V = getValNonImprovising(Ty, $2);
1251 CurFun.CurrentFunction = SavedCurFn;
1253 // If this is an initializer for a constant pointer, which is referencing a
1254 // (currently) undefined variable, create a stub now that shall be replaced
1255 // in the future with the right type of variable.
1258 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1259 const PointerType *PT = cast<PointerType>(Ty);
1261 // First check to see if the forward references value is already created!
1262 PerModuleInfo::GlobalRefsType::iterator I =
1263 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1265 if (I != CurModule.GlobalRefs.end()) {
1266 V = I->second; // Placeholder already exists, use it...
1270 if ($2.Type == ValID::NameVal) Name = $2.Name;
1272 // Create the forward referenced global.
1274 if (const FunctionType *FTy =
1275 dyn_cast<FunctionType>(PT->getElementType())) {
1276 GV = new Function(FTy, GlobalValue::ExternalLinkage, Name,
1277 CurModule.CurrentModule);
1279 GV = new GlobalVariable(PT->getElementType(), false,
1280 GlobalValue::ExternalLinkage, 0,
1281 Name, CurModule.CurrentModule);
1284 // Keep track of the fact that we have a forward ref to recycle it
1285 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1290 $$ = cast<GlobalValue>(V);
1291 delete $1; // Free the type handle
1294 if ($1->get() != $2->getType())
1295 ThrowException("Mismatched types for constant expression!");
1299 | Types ZEROINITIALIZER {
1300 const Type *Ty = $1->get();
1301 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1302 ThrowException("Cannot create a null initialized value of this type!");
1303 $$ = Constant::getNullValue(Ty);
1307 ConstVal : SIntType EINT64VAL { // integral constants
1308 if (!ConstantSInt::isValueValidForType($1, $2))
1309 ThrowException("Constant value doesn't fit in type!");
1310 $$ = ConstantSInt::get($1, $2);
1312 | UIntType EUINT64VAL { // integral constants
1313 if (!ConstantUInt::isValueValidForType($1, $2))
1314 ThrowException("Constant value doesn't fit in type!");
1315 $$ = ConstantUInt::get($1, $2);
1317 | BOOL TRUETOK { // Boolean constants
1318 $$ = ConstantBool::True;
1320 | BOOL FALSETOK { // Boolean constants
1321 $$ = ConstantBool::False;
1323 | FPType FPVAL { // Float & Double constants
1324 if (!ConstantFP::isValueValidForType($1, $2))
1325 ThrowException("Floating point constant invalid for type!!");
1326 $$ = ConstantFP::get($1, $2);
1330 ConstExpr: CAST '(' ConstVal TO Types ')' {
1331 if (!$3->getType()->isFirstClassType())
1332 ThrowException("cast constant expression from a non-primitive type: '" +
1333 $3->getType()->getDescription() + "'!");
1334 if (!$5->get()->isFirstClassType())
1335 ThrowException("cast constant expression to a non-primitive type: '" +
1336 $5->get()->getDescription() + "'!");
1337 $$ = ConstantExpr::getCast($3, $5->get());
1340 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1341 if (!isa<PointerType>($3->getType()))
1342 ThrowException("GetElementPtr requires a pointer operand!");
1344 // LLVM 1.2 and earlier used ubyte struct indices. Convert any ubyte struct
1345 // indices to uint struct indices for compatibility.
1346 generic_gep_type_iterator<std::vector<Value*>::iterator>
1347 GTI = gep_type_begin($3->getType(), $4->begin(), $4->end()),
1348 GTE = gep_type_end($3->getType(), $4->begin(), $4->end());
1349 for (unsigned i = 0, e = $4->size(); i != e && GTI != GTE; ++i, ++GTI)
1350 if (isa<StructType>(*GTI)) // Only change struct indices
1351 if (ConstantUInt *CUI = dyn_cast<ConstantUInt>((*$4)[i]))
1352 if (CUI->getType() == Type::UByteTy)
1353 (*$4)[i] = ConstantExpr::getCast(CUI, Type::UIntTy);
1356 GetElementPtrInst::getIndexedType($3->getType(), *$4, true);
1358 ThrowException("Index list invalid for constant getelementptr!");
1360 std::vector<Constant*> IdxVec;
1361 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1362 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1363 IdxVec.push_back(C);
1365 ThrowException("Indices to constant getelementptr must be constants!");
1369 $$ = ConstantExpr::getGetElementPtr($3, IdxVec);
1371 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1372 if ($3->getType() != Type::BoolTy)
1373 ThrowException("Select condition must be of boolean type!");
1374 if ($5->getType() != $7->getType())
1375 ThrowException("Select operand types must match!");
1376 $$ = ConstantExpr::getSelect($3, $5, $7);
1378 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1379 if ($3->getType() != $5->getType())
1380 ThrowException("Binary operator types must match!");
1381 // HACK: llvm 1.3 and earlier used to emit invalid pointer constant exprs.
1382 // To retain backward compatibility with these early compilers, we emit a
1383 // cast to the appropriate integer type automatically if we are in the
1384 // broken case. See PR424 for more information.
1385 if (!isa<PointerType>($3->getType())) {
1386 $$ = ConstantExpr::get($1, $3, $5);
1388 const Type *IntPtrTy = 0;
1389 switch (CurModule.CurrentModule->getPointerSize()) {
1390 case Module::Pointer32: IntPtrTy = Type::IntTy; break;
1391 case Module::Pointer64: IntPtrTy = Type::LongTy; break;
1392 default: ThrowException("invalid pointer binary constant expr!");
1394 $$ = ConstantExpr::get($1, ConstantExpr::getCast($3, IntPtrTy),
1395 ConstantExpr::getCast($5, IntPtrTy));
1396 $$ = ConstantExpr::getCast($$, $3->getType());
1399 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1400 if ($3->getType() != $5->getType())
1401 ThrowException("Logical operator types must match!");
1402 if (!$3->getType()->isIntegral())
1403 ThrowException("Logical operands must have integral types!");
1404 $$ = ConstantExpr::get($1, $3, $5);
1406 | SetCondOps '(' ConstVal ',' ConstVal ')' {
1407 if ($3->getType() != $5->getType())
1408 ThrowException("setcc operand types must match!");
1409 $$ = ConstantExpr::get($1, $3, $5);
1411 | ShiftOps '(' ConstVal ',' ConstVal ')' {
1412 if ($5->getType() != Type::UByteTy)
1413 ThrowException("Shift count for shift constant must be unsigned byte!");
1414 if (!$3->getType()->isInteger())
1415 ThrowException("Shift constant expression requires integer operand!");
1416 $$ = ConstantExpr::get($1, $3, $5);
1420 // ConstVector - A list of comma separated constants.
1421 ConstVector : ConstVector ',' ConstVal {
1422 ($$ = $1)->push_back($3);
1425 $$ = new std::vector<Constant*>();
1430 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1431 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1434 //===----------------------------------------------------------------------===//
1435 // Rules to match Modules
1436 //===----------------------------------------------------------------------===//
1438 // Module rule: Capture the result of parsing the whole file into a result
1441 Module : FunctionList {
1442 $$ = ParserResult = $1;
1443 CurModule.ModuleDone();
1446 // FunctionList - A list of functions, preceeded by a constant pool.
1448 FunctionList : FunctionList Function {
1450 CurFun.FunctionDone();
1452 | FunctionList FunctionProto {
1455 | FunctionList IMPLEMENTATION {
1459 $$ = CurModule.CurrentModule;
1460 // Resolve circular types before we parse the body of the module
1461 ResolveTypes(CurModule.LateResolveTypes);
1464 // ConstPool - Constants with optional names assigned to them.
1465 ConstPool : ConstPool OptAssign TYPE TypesV { // Types can be defined in the const pool
1466 // Eagerly resolve types. This is not an optimization, this is a
1467 // requirement that is due to the fact that we could have this:
1469 // %list = type { %list * }
1470 // %list = type { %list * } ; repeated type decl
1472 // If types are not resolved eagerly, then the two types will not be
1473 // determined to be the same type!
1475 ResolveTypeTo($2, *$4);
1477 if (!setTypeName(*$4, $2) && !$2) {
1478 // If this is a named type that is not a redefinition, add it to the slot
1480 if (inFunctionScope())
1481 CurFun.Types.push_back(*$4);
1483 CurModule.Types.push_back(*$4);
1488 | ConstPool FunctionProto { // Function prototypes can be in const pool
1490 | ConstPool OptAssign OptLinkage GlobalType ConstVal {
1491 if ($5 == 0) ThrowException("Global value initializer is not a constant!");
1492 ParseGlobalVariable($2, $3, $4, $5->getType(), $5);
1494 | ConstPool OptAssign EXTERNAL GlobalType Types {
1495 ParseGlobalVariable($2, GlobalValue::ExternalLinkage, $4, *$5, 0);
1498 | ConstPool TARGET TargetDefinition {
1500 | ConstPool DEPLIBS '=' LibrariesDefinition {
1502 | /* empty: end of list */ {
1507 BigOrLittle : BIG { $$ = Module::BigEndian; };
1508 BigOrLittle : LITTLE { $$ = Module::LittleEndian; };
1510 TargetDefinition : ENDIAN '=' BigOrLittle {
1511 CurModule.CurrentModule->setEndianness($3);
1513 | POINTERSIZE '=' EUINT64VAL {
1515 CurModule.CurrentModule->setPointerSize(Module::Pointer32);
1517 CurModule.CurrentModule->setPointerSize(Module::Pointer64);
1519 ThrowException("Invalid pointer size: '" + utostr($3) + "'!");
1521 | TRIPLE '=' STRINGCONSTANT {
1522 CurModule.CurrentModule->setTargetTriple($3);
1526 LibrariesDefinition : '[' LibList ']';
1528 LibList : LibList ',' STRINGCONSTANT {
1529 CurModule.CurrentModule->addLibrary($3);
1533 CurModule.CurrentModule->addLibrary($1);
1536 | /* empty: end of list */ {
1540 //===----------------------------------------------------------------------===//
1541 // Rules to match Function Headers
1542 //===----------------------------------------------------------------------===//
1544 Name : VAR_ID | STRINGCONSTANT;
1545 OptName : Name | /*empty*/ { $$ = 0; };
1547 ArgVal : Types OptName {
1548 if (*$1 == Type::VoidTy)
1549 ThrowException("void typed arguments are invalid!");
1550 $$ = new std::pair<PATypeHolder*, char*>($1, $2);
1553 ArgListH : ArgListH ',' ArgVal {
1559 $$ = new std::vector<std::pair<PATypeHolder*,char*> >();
1564 ArgList : ArgListH {
1567 | ArgListH ',' DOTDOTDOT {
1569 $$->push_back(std::pair<PATypeHolder*,
1570 char*>(new PATypeHolder(Type::VoidTy), 0));
1573 $$ = new std::vector<std::pair<PATypeHolder*,char*> >();
1574 $$->push_back(std::make_pair(new PATypeHolder(Type::VoidTy), (char*)0));
1580 FunctionHeaderH : TypesV Name '(' ArgList ')' {
1582 std::string FunctionName($2);
1583 free($2); // Free strdup'd memory!
1585 if (!(*$1)->isFirstClassType() && *$1 != Type::VoidTy)
1586 ThrowException("LLVM functions cannot return aggregate types!");
1588 std::vector<const Type*> ParamTypeList;
1589 if ($4) { // If there are arguments...
1590 for (std::vector<std::pair<PATypeHolder*,char*> >::iterator I = $4->begin();
1591 I != $4->end(); ++I)
1592 ParamTypeList.push_back(I->first->get());
1595 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
1596 if (isVarArg) ParamTypeList.pop_back();
1598 const FunctionType *FT = FunctionType::get(*$1, ParamTypeList, isVarArg);
1599 const PointerType *PFT = PointerType::get(FT);
1603 if (!FunctionName.empty()) {
1604 ID = ValID::create((char*)FunctionName.c_str());
1606 ID = ValID::create((int)CurModule.Values[PFT].size());
1610 // See if this function was forward referenced. If so, recycle the object.
1611 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
1612 // Move the function to the end of the list, from whereever it was
1613 // previously inserted.
1614 Fn = cast<Function>(FWRef);
1615 CurModule.CurrentModule->getFunctionList().remove(Fn);
1616 CurModule.CurrentModule->getFunctionList().push_back(Fn);
1617 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
1618 (Fn = CurModule.CurrentModule->getFunction(FunctionName, FT))) {
1619 // If this is the case, either we need to be a forward decl, or it needs
1621 if (!CurFun.isDeclare && !Fn->isExternal())
1622 ThrowException("Redefinition of function '" + FunctionName + "'!");
1624 // Make sure to strip off any argument names so we can't get conflicts.
1625 if (Fn->isExternal())
1626 for (Function::aiterator AI = Fn->abegin(), AE = Fn->aend();
1630 } else { // Not already defined?
1631 Fn = new Function(FT, GlobalValue::ExternalLinkage, FunctionName,
1632 CurModule.CurrentModule);
1633 InsertValue(Fn, CurModule.Values);
1636 CurFun.FunctionStart(Fn);
1638 // Add all of the arguments we parsed to the function...
1639 if ($4) { // Is null if empty...
1640 if (isVarArg) { // Nuke the last entry
1641 assert($4->back().first->get() == Type::VoidTy && $4->back().second == 0&&
1642 "Not a varargs marker!");
1643 delete $4->back().first;
1644 $4->pop_back(); // Delete the last entry
1646 Function::aiterator ArgIt = Fn->abegin();
1647 for (std::vector<std::pair<PATypeHolder*, char*> >::iterator I =$4->begin();
1648 I != $4->end(); ++I, ++ArgIt) {
1649 delete I->first; // Delete the typeholder...
1651 setValueName(ArgIt, I->second); // Insert arg into symtab...
1655 delete $4; // We're now done with the argument list
1659 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
1661 FunctionHeader : OptLinkage FunctionHeaderH BEGIN {
1662 $$ = CurFun.CurrentFunction;
1664 // Make sure that we keep track of the linkage type even if there was a
1665 // previous "declare".
1668 // Resolve circular types before we parse the body of the function.
1669 ResolveTypes(CurFun.LateResolveTypes);
1672 END : ENDTOK | '}'; // Allow end of '}' to end a function
1674 Function : BasicBlockList END {
1678 FunctionProto : DECLARE { CurFun.isDeclare = true; } FunctionHeaderH {
1679 $$ = CurFun.CurrentFunction;
1680 CurFun.FunctionDone();
1683 //===----------------------------------------------------------------------===//
1684 // Rules to match Basic Blocks
1685 //===----------------------------------------------------------------------===//
1687 ConstValueRef : ESINT64VAL { // A reference to a direct constant
1688 $$ = ValID::create($1);
1691 $$ = ValID::create($1);
1693 | FPVAL { // Perhaps it's an FP constant?
1694 $$ = ValID::create($1);
1697 $$ = ValID::create(ConstantBool::True);
1700 $$ = ValID::create(ConstantBool::False);
1703 $$ = ValID::createNull();
1706 $$ = ValID::createUndef();
1708 | '<' ConstVector '>' { // Nonempty unsized packed vector
1709 const Type *ETy = (*$2)[0]->getType();
1710 int NumElements = $2->size();
1712 PackedType* pt = PackedType::get(ETy, NumElements);
1713 PATypeHolder* PTy = new PATypeHolder(
1721 // Verify all elements are correct type!
1722 for (unsigned i = 0; i < $2->size(); i++) {
1723 if (ETy != (*$2)[i]->getType())
1724 ThrowException("Element #" + utostr(i) + " is not of type '" +
1725 ETy->getDescription() +"' as required!\nIt is of type '" +
1726 (*$2)[i]->getType()->getDescription() + "'.");
1729 $$ = ValID::create(ConstantPacked::get(pt, *$2));
1730 delete PTy; delete $2;
1733 $$ = ValID::create($1);
1736 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
1739 SymbolicValueRef : INTVAL { // Is it an integer reference...?
1740 $$ = ValID::create($1);
1742 | Name { // Is it a named reference...?
1743 $$ = ValID::create($1);
1746 // ValueRef - A reference to a definition... either constant or symbolic
1747 ValueRef : SymbolicValueRef | ConstValueRef;
1750 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
1751 // type immediately preceeds the value reference, and allows complex constant
1752 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
1753 ResolvedVal : Types ValueRef {
1754 $$ = getVal(*$1, $2); delete $1;
1757 BasicBlockList : BasicBlockList BasicBlock {
1760 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
1765 // Basic blocks are terminated by branching instructions:
1766 // br, br/cc, switch, ret
1768 BasicBlock : InstructionList OptAssign BBTerminatorInst {
1769 setValueName($3, $2);
1772 $1->getInstList().push_back($3);
1777 InstructionList : InstructionList Inst {
1778 $1->getInstList().push_back($2);
1782 $$ = CurBB = getBBVal(ValID::create((int)CurFun.NextBBNum++), true);
1784 // Make sure to move the basic block to the correct location in the
1785 // function, instead of leaving it inserted wherever it was first
1787 CurFun.CurrentFunction->getBasicBlockList().remove(CurBB);
1788 CurFun.CurrentFunction->getBasicBlockList().push_back(CurBB);
1791 $$ = CurBB = getBBVal(ValID::create($1), true);
1793 // Make sure to move the basic block to the correct location in the
1794 // function, instead of leaving it inserted wherever it was first
1796 CurFun.CurrentFunction->getBasicBlockList().remove(CurBB);
1797 CurFun.CurrentFunction->getBasicBlockList().push_back(CurBB);
1800 BBTerminatorInst : RET ResolvedVal { // Return with a result...
1801 $$ = new ReturnInst($2);
1803 | RET VOID { // Return with no result...
1804 $$ = new ReturnInst();
1806 | BR LABEL ValueRef { // Unconditional Branch...
1807 $$ = new BranchInst(getBBVal($3));
1808 } // Conditional Branch...
1809 | BR BOOL ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
1810 $$ = new BranchInst(getBBVal($6), getBBVal($9), getVal(Type::BoolTy, $3));
1812 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
1813 SwitchInst *S = new SwitchInst(getVal($2, $3), getBBVal($6), $8->size());
1816 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
1818 for (; I != E; ++I) {
1819 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
1820 S->addCase(CI, I->second);
1822 ThrowException("Switch case is constant, but not a simple integer!");
1826 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
1827 SwitchInst *S = new SwitchInst(getVal($2, $3), getBBVal($6), 0);
1830 | INVOKE TypesV ValueRef '(' ValueRefListE ')' TO LABEL ValueRef
1831 UNWIND LABEL ValueRef {
1832 const PointerType *PFTy;
1833 const FunctionType *Ty;
1835 if (!(PFTy = dyn_cast<PointerType>($2->get())) ||
1836 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
1837 // Pull out the types of all of the arguments...
1838 std::vector<const Type*> ParamTypes;
1840 for (std::vector<Value*>::iterator I = $5->begin(), E = $5->end();
1842 ParamTypes.push_back((*I)->getType());
1845 bool isVarArg = ParamTypes.size() && ParamTypes.back() == Type::VoidTy;
1846 if (isVarArg) ParamTypes.pop_back();
1848 Ty = FunctionType::get($2->get(), ParamTypes, isVarArg);
1849 PFTy = PointerType::get(Ty);
1852 Value *V = getVal(PFTy, $3); // Get the function we're calling...
1854 BasicBlock *Normal = getBBVal($9);
1855 BasicBlock *Except = getBBVal($12);
1857 // Create the call node...
1858 if (!$5) { // Has no arguments?
1859 $$ = new InvokeInst(V, Normal, Except, std::vector<Value*>());
1860 } else { // Has arguments?
1861 // Loop through FunctionType's arguments and ensure they are specified
1864 FunctionType::param_iterator I = Ty->param_begin();
1865 FunctionType::param_iterator E = Ty->param_end();
1866 std::vector<Value*>::iterator ArgI = $5->begin(), ArgE = $5->end();
1868 for (; ArgI != ArgE && I != E; ++ArgI, ++I)
1869 if ((*ArgI)->getType() != *I)
1870 ThrowException("Parameter " +(*ArgI)->getName()+ " is not of type '" +
1871 (*I)->getDescription() + "'!");
1873 if (I != E || (ArgI != ArgE && !Ty->isVarArg()))
1874 ThrowException("Invalid number of parameters detected!");
1876 $$ = new InvokeInst(V, Normal, Except, *$5);
1882 $$ = new UnwindInst();
1885 $$ = new UnreachableInst();
1890 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
1892 Constant *V = cast<Constant>(getValNonImprovising($2, $3));
1894 ThrowException("May only switch on a constant pool value!");
1896 $$->push_back(std::make_pair(V, getBBVal($6)));
1898 | IntType ConstValueRef ',' LABEL ValueRef {
1899 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
1900 Constant *V = cast<Constant>(getValNonImprovising($1, $2));
1903 ThrowException("May only switch on a constant pool value!");
1905 $$->push_back(std::make_pair(V, getBBVal($5)));
1908 Inst : OptAssign InstVal {
1909 // Is this definition named?? if so, assign the name...
1910 setValueName($2, $1);
1915 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
1916 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
1917 $$->push_back(std::make_pair(getVal(*$1, $3), getBBVal($5)));
1920 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
1922 $1->push_back(std::make_pair(getVal($1->front().first->getType(), $4),
1927 ValueRefList : ResolvedVal { // Used for call statements, and memory insts...
1928 $$ = new std::vector<Value*>();
1931 | ValueRefList ',' ResolvedVal {
1936 // ValueRefListE - Just like ValueRefList, except that it may also be empty!
1937 ValueRefListE : ValueRefList | /*empty*/ { $$ = 0; };
1939 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
1940 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
1941 !isa<PackedType>((*$2).get()))
1943 "Arithmetic operator requires integer, FP, or packed operands!");
1944 if(isa<PackedType>((*$2).get()) && $1 == Instruction::Rem) {
1946 "Rem not supported on packed types!");
1948 $$ = BinaryOperator::create($1, getVal(*$2, $3), getVal(*$2, $5));
1950 ThrowException("binary operator returned null!");
1953 | LogicalOps Types ValueRef ',' ValueRef {
1954 if (!(*$2)->isIntegral())
1955 ThrowException("Logical operator requires integral operands!");
1956 $$ = BinaryOperator::create($1, getVal(*$2, $3), getVal(*$2, $5));
1958 ThrowException("binary operator returned null!");
1961 | SetCondOps Types ValueRef ',' ValueRef {
1962 if(isa<PackedType>((*$2).get())) {
1964 "PackedTypes currently not supported in setcc instructions!");
1966 $$ = new SetCondInst($1, getVal(*$2, $3), getVal(*$2, $5));
1968 ThrowException("binary operator returned null!");
1972 std::cerr << "WARNING: Use of eliminated 'not' instruction:"
1973 << " Replacing with 'xor'.\n";
1975 Value *Ones = ConstantIntegral::getAllOnesValue($2->getType());
1977 ThrowException("Expected integral type for not instruction!");
1979 $$ = BinaryOperator::create(Instruction::Xor, $2, Ones);
1981 ThrowException("Could not create a xor instruction!");
1983 | ShiftOps ResolvedVal ',' ResolvedVal {
1984 if ($4->getType() != Type::UByteTy)
1985 ThrowException("Shift amount must be ubyte!");
1986 if (!$2->getType()->isInteger())
1987 ThrowException("Shift constant expression requires integer operand!");
1988 $$ = new ShiftInst($1, $2, $4);
1990 | CAST ResolvedVal TO Types {
1991 if (!$4->get()->isFirstClassType())
1992 ThrowException("cast instruction to a non-primitive type: '" +
1993 $4->get()->getDescription() + "'!");
1994 $$ = new CastInst($2, *$4);
1997 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
1998 if ($2->getType() != Type::BoolTy)
1999 ThrowException("select condition must be boolean!");
2000 if ($4->getType() != $6->getType())
2001 ThrowException("select value types should match!");
2002 $$ = new SelectInst($2, $4, $6);
2004 | VA_ARG ResolvedVal ',' Types {
2005 // FIXME: This is emulation code for an obsolete syntax. This should be
2006 // removed at some point.
2007 if (!ObsoleteVarArgs) {
2008 std::cerr << "WARNING: this file uses obsolete features. "
2009 << "Assemble and disassemble to update it.\n";
2010 ObsoleteVarArgs = true;
2013 // First, load the valist...
2014 Instruction *CurVAList = new LoadInst($2, "");
2015 CurBB->getInstList().push_back(CurVAList);
2017 // Emit the vaarg instruction.
2018 $$ = new VAArgInst(CurVAList, *$4);
2020 // Now we must advance the pointer and update it in memory.
2021 Instruction *TheVANext = new VANextInst(CurVAList, *$4);
2022 CurBB->getInstList().push_back(TheVANext);
2024 CurBB->getInstList().push_back(new StoreInst(TheVANext, $2));
2027 | VAARG ResolvedVal ',' Types {
2028 $$ = new VAArgInst($2, *$4);
2031 | VANEXT ResolvedVal ',' Types {
2032 $$ = new VANextInst($2, *$4);
2036 const Type *Ty = $2->front().first->getType();
2037 if (!Ty->isFirstClassType())
2038 ThrowException("PHI node operands must be of first class type!");
2039 $$ = new PHINode(Ty);
2040 ((PHINode*)$$)->reserveOperandSpace($2->size());
2041 while ($2->begin() != $2->end()) {
2042 if ($2->front().first->getType() != Ty)
2043 ThrowException("All elements of a PHI node must be of the same type!");
2044 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2047 delete $2; // Free the list...
2049 | CALL TypesV ValueRef '(' ValueRefListE ')' {
2050 const PointerType *PFTy;
2051 const FunctionType *Ty;
2053 if (!(PFTy = dyn_cast<PointerType>($2->get())) ||
2054 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2055 // Pull out the types of all of the arguments...
2056 std::vector<const Type*> ParamTypes;
2058 for (std::vector<Value*>::iterator I = $5->begin(), E = $5->end();
2060 ParamTypes.push_back((*I)->getType());
2063 bool isVarArg = ParamTypes.size() && ParamTypes.back() == Type::VoidTy;
2064 if (isVarArg) ParamTypes.pop_back();
2066 if (!(*$2)->isFirstClassType() && *$2 != Type::VoidTy)
2067 ThrowException("LLVM functions cannot return aggregate types!");
2069 Ty = FunctionType::get($2->get(), ParamTypes, isVarArg);
2070 PFTy = PointerType::get(Ty);
2073 Value *V = getVal(PFTy, $3); // Get the function we're calling...
2075 // Create the call node...
2076 if (!$5) { // Has no arguments?
2077 // Make sure no arguments is a good thing!
2078 if (Ty->getNumParams() != 0)
2079 ThrowException("No arguments passed to a function that "
2080 "expects arguments!");
2082 $$ = new CallInst(V, std::vector<Value*>());
2083 } else { // Has arguments?
2084 // Loop through FunctionType's arguments and ensure they are specified
2087 FunctionType::param_iterator I = Ty->param_begin();
2088 FunctionType::param_iterator E = Ty->param_end();
2089 std::vector<Value*>::iterator ArgI = $5->begin(), ArgE = $5->end();
2091 for (; ArgI != ArgE && I != E; ++ArgI, ++I)
2092 if ((*ArgI)->getType() != *I)
2093 ThrowException("Parameter " +(*ArgI)->getName()+ " is not of type '" +
2094 (*I)->getDescription() + "'!");
2096 if (I != E || (ArgI != ArgE && !Ty->isVarArg()))
2097 ThrowException("Invalid number of parameters detected!");
2099 $$ = new CallInst(V, *$5);
2109 // IndexList - List of indices for GEP based instructions...
2110 IndexList : ',' ValueRefList {
2113 $$ = new std::vector<Value*>();
2116 OptVolatile : VOLATILE {
2124 MemoryInst : MALLOC Types {
2125 $$ = new MallocInst(*$2);
2128 | MALLOC Types ',' UINT ValueRef {
2129 $$ = new MallocInst(*$2, getVal($4, $5));
2133 $$ = new AllocaInst(*$2);
2136 | ALLOCA Types ',' UINT ValueRef {
2137 $$ = new AllocaInst(*$2, getVal($4, $5));
2140 | FREE ResolvedVal {
2141 if (!isa<PointerType>($2->getType()))
2142 ThrowException("Trying to free nonpointer type " +
2143 $2->getType()->getDescription() + "!");
2144 $$ = new FreeInst($2);
2147 | OptVolatile LOAD Types ValueRef {
2148 if (!isa<PointerType>($3->get()))
2149 ThrowException("Can't load from nonpointer type: " +
2150 (*$3)->getDescription());
2151 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
2152 ThrowException("Can't load from pointer of non-first-class type: " +
2153 (*$3)->getDescription());
2154 $$ = new LoadInst(getVal(*$3, $4), "", $1);
2157 | OptVolatile STORE ResolvedVal ',' Types ValueRef {
2158 const PointerType *PT = dyn_cast<PointerType>($5->get());
2160 ThrowException("Can't store to a nonpointer type: " +
2161 (*$5)->getDescription());
2162 const Type *ElTy = PT->getElementType();
2163 if (ElTy != $3->getType())
2164 ThrowException("Can't store '" + $3->getType()->getDescription() +
2165 "' into space of type '" + ElTy->getDescription() + "'!");
2167 $$ = new StoreInst($3, getVal(*$5, $6), $1);
2170 | GETELEMENTPTR Types ValueRef IndexList {
2171 if (!isa<PointerType>($2->get()))
2172 ThrowException("getelementptr insn requires pointer operand!");
2174 // LLVM 1.2 and earlier used ubyte struct indices. Convert any ubyte struct
2175 // indices to uint struct indices for compatibility.
2176 generic_gep_type_iterator<std::vector<Value*>::iterator>
2177 GTI = gep_type_begin($2->get(), $4->begin(), $4->end()),
2178 GTE = gep_type_end($2->get(), $4->begin(), $4->end());
2179 for (unsigned i = 0, e = $4->size(); i != e && GTI != GTE; ++i, ++GTI)
2180 if (isa<StructType>(*GTI)) // Only change struct indices
2181 if (ConstantUInt *CUI = dyn_cast<ConstantUInt>((*$4)[i]))
2182 if (CUI->getType() == Type::UByteTy)
2183 (*$4)[i] = ConstantExpr::getCast(CUI, Type::UIntTy);
2185 if (!GetElementPtrInst::getIndexedType(*$2, *$4, true))
2186 ThrowException("Invalid getelementptr indices for type '" +
2187 (*$2)->getDescription()+ "'!");
2188 $$ = new GetElementPtrInst(getVal(*$2, $3), *$4);
2189 delete $2; delete $4;
2194 int yyerror(const char *ErrorMsg) {
2196 = std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
2197 + ":" + utostr((unsigned) llvmAsmlineno) + ": ";
2198 std::string errMsg = std::string(ErrorMsg) + "\n" + where + " while reading ";
2199 if (yychar == YYEMPTY || yychar == 0)
2200 errMsg += "end-of-file.";
2202 errMsg += "token: '" + std::string(llvmAsmtext, llvmAsmleng) + "'";
2203 ThrowException(errMsg);