1 //===-- llvmAsmParser.y - Parser for llvm assembly files --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the bison parser for LLVM assembly languages files.
12 //===----------------------------------------------------------------------===//
15 #include "ParserInternals.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/InlineAsm.h"
18 #include "llvm/Instructions.h"
19 #include "llvm/Module.h"
20 #include "llvm/SymbolTable.h"
21 #include "llvm/Assembly/AutoUpgrade.h"
22 #include "llvm/Support/GetElementPtrTypeIterator.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/Support/MathExtras.h"
30 // The following is a gross hack. In order to rid the libAsmParser library of
31 // exceptions, we have to have a way of getting the yyparse function to go into
32 // an error situation. So, whenever we want an error to occur, the GenerateError
33 // function (see bottom of file) sets TriggerError. Then, at the end of each
34 // production in the grammer we use CHECK_FOR_ERROR which will invoke YYERROR
35 // (a goto) to put YACC in error state. Furthermore, several calls to
36 // GenerateError are made from inside productions and they must simulate the
37 // previous exception behavior by exiting the production immediately. We have
38 // replaced these with the GEN_ERROR macro which calls GeneratError and then
39 // immediately invokes YYERROR. This would be so much cleaner if it was a
40 // recursive descent parser.
41 static bool TriggerError = false;
42 #define CHECK_FOR_ERROR { if (TriggerError) { TriggerError = false; YYERROR; } }
43 #define GEN_ERROR(msg) { GenerateError(msg); YYERROR; }
45 int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
46 int yylex(); // declaration" of xxx warnings.
50 std::string CurFilename;
54 static Module *ParserResult;
56 // DEBUG_UPREFS - Define this symbol if you want to enable debugging output
57 // relating to upreferences in the input stream.
59 //#define DEBUG_UPREFS 1
61 #define UR_OUT(X) std::cerr << X
66 #define YYERROR_VERBOSE 1
68 static bool ObsoleteVarArgs;
69 static bool NewVarArgs;
70 static BasicBlock *CurBB;
71 static GlobalVariable *CurGV;
74 // This contains info used when building the body of a function. It is
75 // destroyed when the function is completed.
77 typedef std::vector<Value *> ValueList; // Numbered defs
79 ResolveDefinitions(std::map<const Type *,ValueList> &LateResolvers,
80 std::map<const Type *,ValueList> *FutureLateResolvers = 0);
82 static struct PerModuleInfo {
83 Module *CurrentModule;
84 std::map<const Type *, ValueList> Values; // Module level numbered definitions
85 std::map<const Type *,ValueList> LateResolveValues;
86 std::vector<PATypeHolder> Types;
87 std::map<ValID, PATypeHolder> LateResolveTypes;
89 /// PlaceHolderInfo - When temporary placeholder objects are created, remember
90 /// how they were referenced and on which line of the input they came from so
91 /// that we can resolve them later and print error messages as appropriate.
92 std::map<Value*, std::pair<ValID, int> > PlaceHolderInfo;
94 // GlobalRefs - This maintains a mapping between <Type, ValID>'s and forward
95 // references to global values. Global values may be referenced before they
96 // are defined, and if so, the temporary object that they represent is held
97 // here. This is used for forward references of GlobalValues.
99 typedef std::map<std::pair<const PointerType *,
100 ValID>, GlobalValue*> GlobalRefsType;
101 GlobalRefsType GlobalRefs;
104 // If we could not resolve some functions at function compilation time
105 // (calls to functions before they are defined), resolve them now... Types
106 // are resolved when the constant pool has been completely parsed.
108 ResolveDefinitions(LateResolveValues);
112 // Check to make sure that all global value forward references have been
115 if (!GlobalRefs.empty()) {
116 std::string UndefinedReferences = "Unresolved global references exist:\n";
118 for (GlobalRefsType::iterator I = GlobalRefs.begin(), E =GlobalRefs.end();
120 UndefinedReferences += " " + I->first.first->getDescription() + " " +
121 I->first.second.getName() + "\n";
123 GenerateError(UndefinedReferences);
127 // Look for intrinsic functions and CallInst that need to be upgraded
128 for (Module::iterator FI = CurrentModule->begin(),
129 FE = CurrentModule->end(); FI != FE; )
130 UpgradeCallsToIntrinsic(FI++);
132 Values.clear(); // Clear out function local definitions
137 // GetForwardRefForGlobal - Check to see if there is a forward reference
138 // for this global. If so, remove it from the GlobalRefs map and return it.
139 // If not, just return null.
140 GlobalValue *GetForwardRefForGlobal(const PointerType *PTy, ValID ID) {
141 // Check to see if there is a forward reference to this global variable...
142 // if there is, eliminate it and patch the reference to use the new def'n.
143 GlobalRefsType::iterator I = GlobalRefs.find(std::make_pair(PTy, ID));
144 GlobalValue *Ret = 0;
145 if (I != GlobalRefs.end()) {
153 static struct PerFunctionInfo {
154 Function *CurrentFunction; // Pointer to current function being created
156 std::map<const Type*, ValueList> Values; // Keep track of #'d definitions
157 std::map<const Type*, ValueList> LateResolveValues;
158 bool isDeclare; // Is this function a forward declararation?
159 GlobalValue::LinkageTypes Linkage; // Linkage for forward declaration.
161 /// BBForwardRefs - When we see forward references to basic blocks, keep
162 /// track of them here.
163 std::map<BasicBlock*, std::pair<ValID, int> > BBForwardRefs;
164 std::vector<BasicBlock*> NumberedBlocks;
167 inline PerFunctionInfo() {
170 Linkage = GlobalValue::ExternalLinkage;
173 inline void FunctionStart(Function *M) {
178 void FunctionDone() {
179 NumberedBlocks.clear();
181 // Any forward referenced blocks left?
182 if (!BBForwardRefs.empty()) {
183 GenerateError("Undefined reference to label " +
184 BBForwardRefs.begin()->first->getName());
188 // Resolve all forward references now.
189 ResolveDefinitions(LateResolveValues, &CurModule.LateResolveValues);
191 Values.clear(); // Clear out function local definitions
194 Linkage = GlobalValue::ExternalLinkage;
196 } CurFun; // Info for the current function...
198 static bool inFunctionScope() { return CurFun.CurrentFunction != 0; }
201 //===----------------------------------------------------------------------===//
202 // Code to handle definitions of all the types
203 //===----------------------------------------------------------------------===//
205 static int InsertValue(Value *V,
206 std::map<const Type*,ValueList> &ValueTab = CurFun.Values) {
207 if (V->hasName()) return -1; // Is this a numbered definition?
209 // Yes, insert the value into the value table...
210 ValueList &List = ValueTab[V->getType()];
212 return List.size()-1;
215 static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
217 case ValID::NumberVal: // Is it a numbered definition?
218 // Module constants occupy the lowest numbered slots...
219 if ((unsigned)D.Num < CurModule.Types.size())
220 return CurModule.Types[(unsigned)D.Num];
222 case ValID::NameVal: // Is it a named definition?
223 if (const Type *N = CurModule.CurrentModule->getTypeByName(D.Name)) {
224 D.destroy(); // Free old strdup'd memory...
229 GenerateError("Internal parser error: Invalid symbol type reference!");
233 // If we reached here, we referenced either a symbol that we don't know about
234 // or an id number that hasn't been read yet. We may be referencing something
235 // forward, so just create an entry to be resolved later and get to it...
237 if (DoNotImprovise) return 0; // Do we just want a null to be returned?
240 if (inFunctionScope()) {
241 if (D.Type == ValID::NameVal) {
242 GenerateError("Reference to an undefined type: '" + D.getName() + "'");
245 GenerateError("Reference to an undefined type: #" + itostr(D.Num));
250 std::map<ValID, PATypeHolder>::iterator I =CurModule.LateResolveTypes.find(D);
251 if (I != CurModule.LateResolveTypes.end())
254 Type *Typ = OpaqueType::get();
255 CurModule.LateResolveTypes.insert(std::make_pair(D, Typ));
259 static Value *lookupInSymbolTable(const Type *Ty, const std::string &Name) {
260 SymbolTable &SymTab =
261 inFunctionScope() ? CurFun.CurrentFunction->getSymbolTable() :
262 CurModule.CurrentModule->getSymbolTable();
263 return SymTab.lookup(Ty, Name);
266 // getValNonImprovising - Look up the value specified by the provided type and
267 // the provided ValID. If the value exists and has already been defined, return
268 // it. Otherwise return null.
270 static Value *getValNonImprovising(const Type *Ty, const ValID &D) {
271 if (isa<FunctionType>(Ty)) {
272 GenerateError("Functions are not values and "
273 "must be referenced as pointers");
278 case ValID::NumberVal: { // Is it a numbered definition?
279 unsigned Num = (unsigned)D.Num;
281 // Module constants occupy the lowest numbered slots...
282 std::map<const Type*,ValueList>::iterator VI = CurModule.Values.find(Ty);
283 if (VI != CurModule.Values.end()) {
284 if (Num < VI->second.size())
285 return VI->second[Num];
286 Num -= VI->second.size();
289 // Make sure that our type is within bounds
290 VI = CurFun.Values.find(Ty);
291 if (VI == CurFun.Values.end()) return 0;
293 // Check that the number is within bounds...
294 if (VI->second.size() <= Num) return 0;
296 return VI->second[Num];
299 case ValID::NameVal: { // Is it a named definition?
300 Value *N = lookupInSymbolTable(Ty, std::string(D.Name));
301 if (N == 0) return 0;
303 D.destroy(); // Free old strdup'd memory...
307 // Check to make sure that "Ty" is an integral type, and that our
308 // value will fit into the specified type...
309 case ValID::ConstSIntVal: // Is it a constant pool reference??
310 if (!ConstantSInt::isValueValidForType(Ty, D.ConstPool64)) {
311 GenerateError("Signed integral constant '" +
312 itostr(D.ConstPool64) + "' is invalid for type '" +
313 Ty->getDescription() + "'!");
316 return ConstantSInt::get(Ty, D.ConstPool64);
318 case ValID::ConstUIntVal: // Is it an unsigned const pool reference?
319 if (!ConstantUInt::isValueValidForType(Ty, D.UConstPool64)) {
320 if (!ConstantSInt::isValueValidForType(Ty, D.ConstPool64)) {
321 GenerateError("Integral constant '" + utostr(D.UConstPool64) +
322 "' is invalid or out of range!");
324 } else { // This is really a signed reference. Transmogrify.
325 return ConstantSInt::get(Ty, D.ConstPool64);
328 return ConstantUInt::get(Ty, D.UConstPool64);
331 case ValID::ConstFPVal: // Is it a floating point const pool reference?
332 if (!ConstantFP::isValueValidForType(Ty, D.ConstPoolFP)) {
333 GenerateError("FP constant invalid for type!!");
336 return ConstantFP::get(Ty, D.ConstPoolFP);
338 case ValID::ConstNullVal: // Is it a null value?
339 if (!isa<PointerType>(Ty)) {
340 GenerateError("Cannot create a a non pointer null!");
343 return ConstantPointerNull::get(cast<PointerType>(Ty));
345 case ValID::ConstUndefVal: // Is it an undef value?
346 return UndefValue::get(Ty);
348 case ValID::ConstZeroVal: // Is it a zero value?
349 return Constant::getNullValue(Ty);
351 case ValID::ConstantVal: // Fully resolved constant?
352 if (D.ConstantValue->getType() != Ty) {
353 GenerateError("Constant expression type different from required type!");
356 return D.ConstantValue;
358 case ValID::InlineAsmVal: { // Inline asm expression
359 const PointerType *PTy = dyn_cast<PointerType>(Ty);
360 const FunctionType *FTy =
361 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
362 if (!FTy || !InlineAsm::Verify(FTy, D.IAD->Constraints)) {
363 GenerateError("Invalid type for asm constraint string!");
366 InlineAsm *IA = InlineAsm::get(FTy, D.IAD->AsmString, D.IAD->Constraints,
367 D.IAD->HasSideEffects);
368 D.destroy(); // Free InlineAsmDescriptor.
372 assert(0 && "Unhandled case!");
376 assert(0 && "Unhandled case!");
380 // getVal - This function is identical to getValNonImprovising, except that if a
381 // value is not already defined, it "improvises" by creating a placeholder var
382 // that looks and acts just like the requested variable. When the value is
383 // defined later, all uses of the placeholder variable are replaced with the
386 static Value *getVal(const Type *Ty, const ValID &ID) {
387 if (Ty == Type::LabelTy) {
388 GenerateError("Cannot use a basic block here");
392 // See if the value has already been defined.
393 Value *V = getValNonImprovising(Ty, ID);
395 if (TriggerError) return 0;
397 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty)) {
398 GenerateError("Invalid use of a composite type!");
402 // If we reached here, we referenced either a symbol that we don't know about
403 // or an id number that hasn't been read yet. We may be referencing something
404 // forward, so just create an entry to be resolved later and get to it...
406 V = new Argument(Ty);
408 // Remember where this forward reference came from. FIXME, shouldn't we try
409 // to recycle these things??
410 CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
413 if (inFunctionScope())
414 InsertValue(V, CurFun.LateResolveValues);
416 InsertValue(V, CurModule.LateResolveValues);
420 /// getBBVal - This is used for two purposes:
421 /// * If isDefinition is true, a new basic block with the specified ID is being
423 /// * If isDefinition is true, this is a reference to a basic block, which may
424 /// or may not be a forward reference.
426 static BasicBlock *getBBVal(const ValID &ID, bool isDefinition = false) {
427 assert(inFunctionScope() && "Can't get basic block at global scope!");
433 GenerateError("Illegal label reference " + ID.getName());
435 case ValID::NumberVal: // Is it a numbered definition?
436 if (unsigned(ID.Num) >= CurFun.NumberedBlocks.size())
437 CurFun.NumberedBlocks.resize(ID.Num+1);
438 BB = CurFun.NumberedBlocks[ID.Num];
440 case ValID::NameVal: // Is it a named definition?
442 if (Value *N = CurFun.CurrentFunction->
443 getSymbolTable().lookup(Type::LabelTy, Name))
444 BB = cast<BasicBlock>(N);
448 // See if the block has already been defined.
450 // If this is the definition of the block, make sure the existing value was
451 // just a forward reference. If it was a forward reference, there will be
452 // an entry for it in the PlaceHolderInfo map.
453 if (isDefinition && !CurFun.BBForwardRefs.erase(BB)) {
454 // The existing value was a definition, not a forward reference.
455 GenerateError("Redefinition of label " + ID.getName());
459 ID.destroy(); // Free strdup'd memory.
463 // Otherwise this block has not been seen before.
464 BB = new BasicBlock("", CurFun.CurrentFunction);
465 if (ID.Type == ValID::NameVal) {
466 BB->setName(ID.Name);
468 CurFun.NumberedBlocks[ID.Num] = BB;
471 // If this is not a definition, keep track of it so we can use it as a forward
474 // Remember where this forward reference came from.
475 CurFun.BBForwardRefs[BB] = std::make_pair(ID, llvmAsmlineno);
477 // The forward declaration could have been inserted anywhere in the
478 // function: insert it into the correct place now.
479 CurFun.CurrentFunction->getBasicBlockList().remove(BB);
480 CurFun.CurrentFunction->getBasicBlockList().push_back(BB);
487 //===----------------------------------------------------------------------===//
488 // Code to handle forward references in instructions
489 //===----------------------------------------------------------------------===//
491 // This code handles the late binding needed with statements that reference
492 // values not defined yet... for example, a forward branch, or the PHI node for
495 // This keeps a table (CurFun.LateResolveValues) of all such forward references
496 // and back patchs after we are done.
499 // ResolveDefinitions - If we could not resolve some defs at parsing
500 // time (forward branches, phi functions for loops, etc...) resolve the
504 ResolveDefinitions(std::map<const Type*,ValueList> &LateResolvers,
505 std::map<const Type*,ValueList> *FutureLateResolvers) {
506 // Loop over LateResolveDefs fixing up stuff that couldn't be resolved
507 for (std::map<const Type*,ValueList>::iterator LRI = LateResolvers.begin(),
508 E = LateResolvers.end(); LRI != E; ++LRI) {
509 ValueList &List = LRI->second;
510 while (!List.empty()) {
511 Value *V = List.back();
514 std::map<Value*, std::pair<ValID, int> >::iterator PHI =
515 CurModule.PlaceHolderInfo.find(V);
516 assert(PHI != CurModule.PlaceHolderInfo.end() && "Placeholder error!");
518 ValID &DID = PHI->second.first;
520 Value *TheRealValue = getValNonImprovising(LRI->first, DID);
524 V->replaceAllUsesWith(TheRealValue);
526 CurModule.PlaceHolderInfo.erase(PHI);
527 } else if (FutureLateResolvers) {
528 // Functions have their unresolved items forwarded to the module late
530 InsertValue(V, *FutureLateResolvers);
532 if (DID.Type == ValID::NameVal) {
533 GenerateError("Reference to an invalid definition: '" +DID.getName()+
534 "' of type '" + V->getType()->getDescription() + "'",
538 GenerateError("Reference to an invalid definition: #" +
539 itostr(DID.Num) + " of type '" +
540 V->getType()->getDescription() + "'",
548 LateResolvers.clear();
551 // ResolveTypeTo - A brand new type was just declared. This means that (if
552 // name is not null) things referencing Name can be resolved. Otherwise, things
553 // refering to the number can be resolved. Do this now.
555 static void ResolveTypeTo(char *Name, const Type *ToTy) {
557 if (Name) D = ValID::create(Name);
558 else D = ValID::create((int)CurModule.Types.size());
560 std::map<ValID, PATypeHolder>::iterator I =
561 CurModule.LateResolveTypes.find(D);
562 if (I != CurModule.LateResolveTypes.end()) {
563 ((DerivedType*)I->second.get())->refineAbstractTypeTo(ToTy);
564 CurModule.LateResolveTypes.erase(I);
568 // setValueName - Set the specified value to the name given. The name may be
569 // null potentially, in which case this is a noop. The string passed in is
570 // assumed to be a malloc'd string buffer, and is free'd by this function.
572 static void setValueName(Value *V, char *NameStr) {
574 std::string Name(NameStr); // Copy string
575 free(NameStr); // Free old string
577 if (V->getType() == Type::VoidTy) {
578 GenerateError("Can't assign name '" + Name+"' to value with void type!");
582 assert(inFunctionScope() && "Must be in function scope!");
583 SymbolTable &ST = CurFun.CurrentFunction->getSymbolTable();
584 if (ST.lookup(V->getType(), Name)) {
585 GenerateError("Redefinition of value named '" + Name + "' in the '" +
586 V->getType()->getDescription() + "' type plane!");
595 /// ParseGlobalVariable - Handle parsing of a global. If Initializer is null,
596 /// this is a declaration, otherwise it is a definition.
597 static GlobalVariable *
598 ParseGlobalVariable(char *NameStr,GlobalValue::LinkageTypes Linkage,
599 bool isConstantGlobal, const Type *Ty,
600 Constant *Initializer) {
601 if (isa<FunctionType>(Ty)) {
602 GenerateError("Cannot declare global vars of function type!");
606 const PointerType *PTy = PointerType::get(Ty);
610 Name = NameStr; // Copy string
611 free(NameStr); // Free old string
614 // See if this global value was forward referenced. If so, recycle the
618 ID = ValID::create((char*)Name.c_str());
620 ID = ValID::create((int)CurModule.Values[PTy].size());
623 if (GlobalValue *FWGV = CurModule.GetForwardRefForGlobal(PTy, ID)) {
624 // Move the global to the end of the list, from whereever it was
625 // previously inserted.
626 GlobalVariable *GV = cast<GlobalVariable>(FWGV);
627 CurModule.CurrentModule->getGlobalList().remove(GV);
628 CurModule.CurrentModule->getGlobalList().push_back(GV);
629 GV->setInitializer(Initializer);
630 GV->setLinkage(Linkage);
631 GV->setConstant(isConstantGlobal);
632 InsertValue(GV, CurModule.Values);
636 // If this global has a name, check to see if there is already a definition
637 // of this global in the module. If so, merge as appropriate. Note that
638 // this is really just a hack around problems in the CFE. :(
640 // We are a simple redefinition of a value, check to see if it is defined
641 // the same as the old one.
642 if (GlobalVariable *EGV =
643 CurModule.CurrentModule->getGlobalVariable(Name, Ty)) {
644 // We are allowed to redefine a global variable in two circumstances:
645 // 1. If at least one of the globals is uninitialized or
646 // 2. If both initializers have the same value.
648 if (!EGV->hasInitializer() || !Initializer ||
649 EGV->getInitializer() == Initializer) {
651 // Make sure the existing global version gets the initializer! Make
652 // sure that it also gets marked const if the new version is.
653 if (Initializer && !EGV->hasInitializer())
654 EGV->setInitializer(Initializer);
655 if (isConstantGlobal)
656 EGV->setConstant(true);
657 EGV->setLinkage(Linkage);
661 GenerateError("Redefinition of global variable named '" + Name +
662 "' in the '" + Ty->getDescription() + "' type plane!");
667 // Otherwise there is no existing GV to use, create one now.
669 new GlobalVariable(Ty, isConstantGlobal, Linkage, Initializer, Name,
670 CurModule.CurrentModule);
671 InsertValue(GV, CurModule.Values);
675 // setTypeName - Set the specified type to the name given. The name may be
676 // null potentially, in which case this is a noop. The string passed in is
677 // assumed to be a malloc'd string buffer, and is freed by this function.
679 // This function returns true if the type has already been defined, but is
680 // allowed to be redefined in the specified context. If the name is a new name
681 // for the type plane, it is inserted and false is returned.
682 static bool setTypeName(const Type *T, char *NameStr) {
683 assert(!inFunctionScope() && "Can't give types function-local names!");
684 if (NameStr == 0) return false;
686 std::string Name(NameStr); // Copy string
687 free(NameStr); // Free old string
689 // We don't allow assigning names to void type
690 if (T == Type::VoidTy) {
691 GenerateError("Can't assign name '" + Name + "' to the void type!");
695 // Set the type name, checking for conflicts as we do so.
696 bool AlreadyExists = CurModule.CurrentModule->addTypeName(Name, T);
698 if (AlreadyExists) { // Inserting a name that is already defined???
699 const Type *Existing = CurModule.CurrentModule->getTypeByName(Name);
700 assert(Existing && "Conflict but no matching type?");
702 // There is only one case where this is allowed: when we are refining an
703 // opaque type. In this case, Existing will be an opaque type.
704 if (const OpaqueType *OpTy = dyn_cast<OpaqueType>(Existing)) {
705 // We ARE replacing an opaque type!
706 const_cast<OpaqueType*>(OpTy)->refineAbstractTypeTo(T);
710 // Otherwise, this is an attempt to redefine a type. That's okay if
711 // the redefinition is identical to the original. This will be so if
712 // Existing and T point to the same Type object. In this one case we
713 // allow the equivalent redefinition.
714 if (Existing == T) return true; // Yes, it's equal.
716 // Any other kind of (non-equivalent) redefinition is an error.
717 GenerateError("Redefinition of type named '" + Name + "' in the '" +
718 T->getDescription() + "' type plane!");
724 //===----------------------------------------------------------------------===//
725 // Code for handling upreferences in type names...
728 // TypeContains - Returns true if Ty directly contains E in it.
730 static bool TypeContains(const Type *Ty, const Type *E) {
731 return std::find(Ty->subtype_begin(), Ty->subtype_end(),
732 E) != Ty->subtype_end();
737 // NestingLevel - The number of nesting levels that need to be popped before
738 // this type is resolved.
739 unsigned NestingLevel;
741 // LastContainedTy - This is the type at the current binding level for the
742 // type. Every time we reduce the nesting level, this gets updated.
743 const Type *LastContainedTy;
745 // UpRefTy - This is the actual opaque type that the upreference is
749 UpRefRecord(unsigned NL, OpaqueType *URTy)
750 : NestingLevel(NL), LastContainedTy(URTy), UpRefTy(URTy) {}
754 // UpRefs - A list of the outstanding upreferences that need to be resolved.
755 static std::vector<UpRefRecord> UpRefs;
757 /// HandleUpRefs - Every time we finish a new layer of types, this function is
758 /// called. It loops through the UpRefs vector, which is a list of the
759 /// currently active types. For each type, if the up reference is contained in
760 /// the newly completed type, we decrement the level count. When the level
761 /// count reaches zero, the upreferenced type is the type that is passed in:
762 /// thus we can complete the cycle.
764 static PATypeHolder HandleUpRefs(const Type *ty) {
765 // If Ty isn't abstract, or if there are no up-references in it, then there is
766 // nothing to resolve here.
767 if (!ty->isAbstract() || UpRefs.empty()) return ty;
770 UR_OUT("Type '" << Ty->getDescription() <<
771 "' newly formed. Resolving upreferences.\n" <<
772 UpRefs.size() << " upreferences active!\n");
774 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
775 // to zero), we resolve them all together before we resolve them to Ty. At
776 // the end of the loop, if there is anything to resolve to Ty, it will be in
778 OpaqueType *TypeToResolve = 0;
780 for (unsigned i = 0; i != UpRefs.size(); ++i) {
781 UR_OUT(" UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
782 << UpRefs[i].second->getDescription() << ") = "
783 << (TypeContains(Ty, UpRefs[i].second) ? "true" : "false") << "\n");
784 if (TypeContains(Ty, UpRefs[i].LastContainedTy)) {
785 // Decrement level of upreference
786 unsigned Level = --UpRefs[i].NestingLevel;
787 UpRefs[i].LastContainedTy = Ty;
788 UR_OUT(" Uplevel Ref Level = " << Level << "\n");
789 if (Level == 0) { // Upreference should be resolved!
790 if (!TypeToResolve) {
791 TypeToResolve = UpRefs[i].UpRefTy;
793 UR_OUT(" * Resolving upreference for "
794 << UpRefs[i].second->getDescription() << "\n";
795 std::string OldName = UpRefs[i].UpRefTy->getDescription());
796 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
797 UR_OUT(" * Type '" << OldName << "' refined upreference to: "
798 << (const void*)Ty << ", " << Ty->getDescription() << "\n");
800 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list...
801 --i; // Do not skip the next element...
807 UR_OUT(" * Resolving upreference for "
808 << UpRefs[i].second->getDescription() << "\n";
809 std::string OldName = TypeToResolve->getDescription());
810 TypeToResolve->refineAbstractTypeTo(Ty);
817 // common code from the two 'RunVMAsmParser' functions
818 static Module* RunParser(Module * M) {
820 llvmAsmlineno = 1; // Reset the current line number...
821 ObsoleteVarArgs = false;
824 CurModule.CurrentModule = M;
825 yyparse(); // Parse the file, potentially throwing exception
829 Module *Result = ParserResult;
832 //Not all functions use vaarg, so make a second check for ObsoleteVarArgs
835 if ((F = Result->getNamedFunction("llvm.va_start"))
836 && F->getFunctionType()->getNumParams() == 0)
837 ObsoleteVarArgs = true;
838 if((F = Result->getNamedFunction("llvm.va_copy"))
839 && F->getFunctionType()->getNumParams() == 1)
840 ObsoleteVarArgs = true;
843 if (ObsoleteVarArgs && NewVarArgs) {
845 "This file is corrupt: it uses both new and old style varargs");
849 if(ObsoleteVarArgs) {
850 if(Function* F = Result->getNamedFunction("llvm.va_start")) {
851 if (F->arg_size() != 0) {
852 GenerateError("Obsolete va_start takes 0 argument!");
858 //bar = alloca typeof(foo)
862 const Type* RetTy = Type::getPrimitiveType(Type::VoidTyID);
863 const Type* ArgTy = F->getFunctionType()->getReturnType();
864 const Type* ArgTyPtr = PointerType::get(ArgTy);
865 Function* NF = Result->getOrInsertFunction("llvm.va_start",
866 RetTy, ArgTyPtr, (Type *)0);
868 while (!F->use_empty()) {
869 CallInst* CI = cast<CallInst>(F->use_back());
870 AllocaInst* bar = new AllocaInst(ArgTy, 0, "vastart.fix.1", CI);
871 new CallInst(NF, bar, "", CI);
872 Value* foo = new LoadInst(bar, "vastart.fix.2", CI);
873 CI->replaceAllUsesWith(foo);
874 CI->getParent()->getInstList().erase(CI);
876 Result->getFunctionList().erase(F);
879 if(Function* F = Result->getNamedFunction("llvm.va_end")) {
880 if(F->arg_size() != 1) {
881 GenerateError("Obsolete va_end takes 1 argument!");
887 //bar = alloca 1 of typeof(foo)
889 const Type* RetTy = Type::getPrimitiveType(Type::VoidTyID);
890 const Type* ArgTy = F->getFunctionType()->getParamType(0);
891 const Type* ArgTyPtr = PointerType::get(ArgTy);
892 Function* NF = Result->getOrInsertFunction("llvm.va_end",
893 RetTy, ArgTyPtr, (Type *)0);
895 while (!F->use_empty()) {
896 CallInst* CI = cast<CallInst>(F->use_back());
897 AllocaInst* bar = new AllocaInst(ArgTy, 0, "vaend.fix.1", CI);
898 new StoreInst(CI->getOperand(1), bar, CI);
899 new CallInst(NF, bar, "", CI);
900 CI->getParent()->getInstList().erase(CI);
902 Result->getFunctionList().erase(F);
905 if(Function* F = Result->getNamedFunction("llvm.va_copy")) {
906 if(F->arg_size() != 1) {
907 GenerateError("Obsolete va_copy takes 1 argument!");
912 //a = alloca 1 of typeof(foo)
913 //b = alloca 1 of typeof(foo)
918 const Type* RetTy = Type::getPrimitiveType(Type::VoidTyID);
919 const Type* ArgTy = F->getFunctionType()->getReturnType();
920 const Type* ArgTyPtr = PointerType::get(ArgTy);
921 Function* NF = Result->getOrInsertFunction("llvm.va_copy",
922 RetTy, ArgTyPtr, ArgTyPtr,
925 while (!F->use_empty()) {
926 CallInst* CI = cast<CallInst>(F->use_back());
927 AllocaInst* a = new AllocaInst(ArgTy, 0, "vacopy.fix.1", CI);
928 AllocaInst* b = new AllocaInst(ArgTy, 0, "vacopy.fix.2", CI);
929 new StoreInst(CI->getOperand(1), b, CI);
930 new CallInst(NF, a, b, "", CI);
931 Value* foo = new LoadInst(a, "vacopy.fix.3", CI);
932 CI->replaceAllUsesWith(foo);
933 CI->getParent()->getInstList().erase(CI);
935 Result->getFunctionList().erase(F);
942 //===----------------------------------------------------------------------===//
943 // RunVMAsmParser - Define an interface to this parser
944 //===----------------------------------------------------------------------===//
946 Module *llvm::RunVMAsmParser(const std::string &Filename, FILE *F) {
949 CurFilename = Filename;
950 return RunParser(new Module(CurFilename));
953 Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
954 set_scan_string(AsmString);
956 CurFilename = "from_memory";
958 return RunParser(new Module (CurFilename));
967 llvm::Module *ModuleVal;
968 llvm::Function *FunctionVal;
969 std::pair<llvm::PATypeHolder*, char*> *ArgVal;
970 llvm::BasicBlock *BasicBlockVal;
971 llvm::TerminatorInst *TermInstVal;
972 llvm::Instruction *InstVal;
973 llvm::Constant *ConstVal;
975 const llvm::Type *PrimType;
976 llvm::PATypeHolder *TypeVal;
977 llvm::Value *ValueVal;
979 std::vector<std::pair<llvm::PATypeHolder*,char*> > *ArgList;
980 std::vector<llvm::Value*> *ValueList;
981 std::list<llvm::PATypeHolder> *TypeList;
982 // Represent the RHS of PHI node
983 std::list<std::pair<llvm::Value*,
984 llvm::BasicBlock*> > *PHIList;
985 std::vector<std::pair<llvm::Constant*, llvm::BasicBlock*> > *JumpTable;
986 std::vector<llvm::Constant*> *ConstVector;
988 llvm::GlobalValue::LinkageTypes Linkage;
996 char *StrVal; // This memory is strdup'd!
997 llvm::ValID ValIDVal; // strdup'd memory maybe!
999 llvm::Instruction::BinaryOps BinaryOpVal;
1000 llvm::Instruction::TermOps TermOpVal;
1001 llvm::Instruction::MemoryOps MemOpVal;
1002 llvm::Instruction::OtherOps OtherOpVal;
1003 llvm::Module::Endianness Endianness;
1006 %type <ModuleVal> Module FunctionList
1007 %type <FunctionVal> Function FunctionProto FunctionHeader BasicBlockList
1008 %type <BasicBlockVal> BasicBlock InstructionList
1009 %type <TermInstVal> BBTerminatorInst
1010 %type <InstVal> Inst InstVal MemoryInst
1011 %type <ConstVal> ConstVal ConstExpr
1012 %type <ConstVector> ConstVector
1013 %type <ArgList> ArgList ArgListH
1014 %type <ArgVal> ArgVal
1015 %type <PHIList> PHIList
1016 %type <ValueList> ValueRefList ValueRefListE // For call param lists
1017 %type <ValueList> IndexList // For GEP derived indices
1018 %type <TypeList> TypeListI ArgTypeListI
1019 %type <JumpTable> JumpTable
1020 %type <BoolVal> GlobalType // GLOBAL or CONSTANT?
1021 %type <BoolVal> OptVolatile // 'volatile' or not
1022 %type <BoolVal> OptTailCall // TAIL CALL or plain CALL.
1023 %type <BoolVal> OptSideEffect // 'sideeffect' or not.
1024 %type <Linkage> OptLinkage
1025 %type <Endianness> BigOrLittle
1027 // ValueRef - Unresolved reference to a definition or BB
1028 %type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
1029 %type <ValueVal> ResolvedVal // <type> <valref> pair
1030 // Tokens and types for handling constant integer values
1032 // ESINT64VAL - A negative number within long long range
1033 %token <SInt64Val> ESINT64VAL
1035 // EUINT64VAL - A positive number within uns. long long range
1036 %token <UInt64Val> EUINT64VAL
1037 %type <SInt64Val> EINT64VAL
1039 %token <SIntVal> SINTVAL // Signed 32 bit ints...
1040 %token <UIntVal> UINTVAL // Unsigned 32 bit ints...
1041 %type <SIntVal> INTVAL
1042 %token <FPVal> FPVAL // Float or Double constant
1044 // Built in types...
1045 %type <TypeVal> Types TypesV UpRTypes UpRTypesV
1046 %type <PrimType> SIntType UIntType IntType FPType PrimType // Classifications
1047 %token <PrimType> VOID BOOL SBYTE UBYTE SHORT USHORT INT UINT LONG ULONG
1048 %token <PrimType> FLOAT DOUBLE TYPE LABEL
1050 %token <StrVal> VAR_ID LABELSTR STRINGCONSTANT
1051 %type <StrVal> Name OptName OptAssign
1052 %type <UIntVal> OptAlign OptCAlign
1053 %type <StrVal> OptSection SectionString
1055 %token IMPLEMENTATION ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
1056 %token DECLARE GLOBAL CONSTANT SECTION VOLATILE
1057 %token TO DOTDOTDOT NULL_TOK UNDEF CONST INTERNAL LINKONCE WEAK APPENDING
1058 %token DLLIMPORT DLLEXPORT EXTERN_WEAK
1059 %token OPAQUE NOT EXTERNAL TARGET TRIPLE ENDIAN POINTERSIZE LITTLE BIG ALIGN
1060 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
1061 %token CC_TOK CCC_TOK CSRETCC_TOK FASTCC_TOK COLDCC_TOK
1062 %token X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
1063 %type <UIntVal> OptCallingConv
1065 // Basic Block Terminating Operators
1066 %token <TermOpVal> RET BR SWITCH INVOKE UNWIND UNREACHABLE
1069 %type <BinaryOpVal> ArithmeticOps LogicalOps SetCondOps // Binops Subcatagories
1070 %token <BinaryOpVal> ADD SUB MUL DIV REM AND OR XOR
1071 %token <BinaryOpVal> SETLE SETGE SETLT SETGT SETEQ SETNE // Binary Comarators
1073 // Memory Instructions
1074 %token <MemOpVal> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
1077 %type <OtherOpVal> ShiftOps
1078 %token <OtherOpVal> PHI_TOK CAST SELECT SHL SHR VAARG
1079 %token <OtherOpVal> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
1080 %token VAARG_old VANEXT_old //OBSOLETE
1086 // Handle constant integer size restriction and conversion...
1090 if ($1 > (uint32_t)INT32_MAX) // Outside of my range!
1091 GEN_ERROR("Value too large for type!");
1097 EINT64VAL : ESINT64VAL; // These have same type and can't cause problems...
1098 EINT64VAL : EUINT64VAL {
1099 if ($1 > (uint64_t)INT64_MAX) // Outside of my range!
1100 GEN_ERROR("Value too large for type!");
1105 // Operations that are notably excluded from this list include:
1106 // RET, BR, & SWITCH because they end basic blocks and are treated specially.
1108 ArithmeticOps: ADD | SUB | MUL | DIV | REM;
1109 LogicalOps : AND | OR | XOR;
1110 SetCondOps : SETLE | SETGE | SETLT | SETGT | SETEQ | SETNE;
1112 ShiftOps : SHL | SHR;
1114 // These are some types that allow classification if we only want a particular
1115 // thing... for example, only a signed, unsigned, or integral type.
1116 SIntType : LONG | INT | SHORT | SBYTE;
1117 UIntType : ULONG | UINT | USHORT | UBYTE;
1118 IntType : SIntType | UIntType;
1119 FPType : FLOAT | DOUBLE;
1121 // OptAssign - Value producing statements have an optional assignment component
1122 OptAssign : Name '=' {
1131 OptLinkage : INTERNAL { $$ = GlobalValue::InternalLinkage; } |
1132 LINKONCE { $$ = GlobalValue::LinkOnceLinkage; } |
1133 WEAK { $$ = GlobalValue::WeakLinkage; } |
1134 APPENDING { $$ = GlobalValue::AppendingLinkage; } |
1135 DLLIMPORT { $$ = GlobalValue::DLLImportLinkage; } |
1136 DLLEXPORT { $$ = GlobalValue::DLLExportLinkage; } |
1137 EXTERN_WEAK { $$ = GlobalValue::ExternalWeakLinkage; } |
1138 /*empty*/ { $$ = GlobalValue::ExternalLinkage; };
1140 OptCallingConv : /*empty*/ { $$ = CallingConv::C; } |
1141 CCC_TOK { $$ = CallingConv::C; } |
1142 CSRETCC_TOK { $$ = CallingConv::CSRet; } |
1143 FASTCC_TOK { $$ = CallingConv::Fast; } |
1144 COLDCC_TOK { $$ = CallingConv::Cold; } |
1145 X86_STDCALLCC_TOK { $$ = CallingConv::X86_StdCall; } |
1146 X86_FASTCALLCC_TOK { $$ = CallingConv::X86_FastCall; } |
1148 if ((unsigned)$2 != $2)
1149 GEN_ERROR("Calling conv too large!");
1154 // OptAlign/OptCAlign - An optional alignment, and an optional alignment with
1155 // a comma before it.
1156 OptAlign : /*empty*/ { $$ = 0; } |
1159 if ($$ != 0 && !isPowerOf2_32($$))
1160 GEN_ERROR("Alignment must be a power of two!");
1163 OptCAlign : /*empty*/ { $$ = 0; } |
1164 ',' ALIGN EUINT64VAL {
1166 if ($$ != 0 && !isPowerOf2_32($$))
1167 GEN_ERROR("Alignment must be a power of two!");
1172 SectionString : SECTION STRINGCONSTANT {
1173 for (unsigned i = 0, e = strlen($2); i != e; ++i)
1174 if ($2[i] == '"' || $2[i] == '\\')
1175 GEN_ERROR("Invalid character in section name!");
1180 OptSection : /*empty*/ { $$ = 0; } |
1181 SectionString { $$ = $1; };
1183 // GlobalVarAttributes - Used to pass the attributes string on a global. CurGV
1184 // is set to be the global we are processing.
1186 GlobalVarAttributes : /* empty */ {} |
1187 ',' GlobalVarAttribute GlobalVarAttributes {};
1188 GlobalVarAttribute : SectionString {
1189 CurGV->setSection($1);
1193 | ALIGN EUINT64VAL {
1194 if ($2 != 0 && !isPowerOf2_32($2))
1195 GEN_ERROR("Alignment must be a power of two!");
1196 CurGV->setAlignment($2);
1200 //===----------------------------------------------------------------------===//
1201 // Types includes all predefined types... except void, because it can only be
1202 // used in specific contexts (function returning void for example). To have
1203 // access to it, a user must explicitly use TypesV.
1206 // TypesV includes all of 'Types', but it also includes the void type.
1207 TypesV : Types | VOID { $$ = new PATypeHolder($1); };
1208 UpRTypesV : UpRTypes | VOID { $$ = new PATypeHolder($1); };
1211 if (!UpRefs.empty())
1212 GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
1218 // Derived types are added later...
1220 PrimType : BOOL | SBYTE | UBYTE | SHORT | USHORT | INT | UINT ;
1221 PrimType : LONG | ULONG | FLOAT | DOUBLE | TYPE | LABEL;
1223 $$ = new PATypeHolder(OpaqueType::get());
1227 $$ = new PATypeHolder($1);
1230 UpRTypes : SymbolicValueRef { // Named types are also simple types...
1231 const Type* tmp = getTypeVal($1);
1233 $$ = new PATypeHolder(tmp);
1236 // Include derived types in the Types production.
1238 UpRTypes : '\\' EUINT64VAL { // Type UpReference
1239 if ($2 > (uint64_t)~0U) GEN_ERROR("Value out of range!");
1240 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder
1241 UpRefs.push_back(UpRefRecord((unsigned)$2, OT)); // Add to vector...
1242 $$ = new PATypeHolder(OT);
1243 UR_OUT("New Upreference!\n");
1246 | UpRTypesV '(' ArgTypeListI ')' { // Function derived type?
1247 std::vector<const Type*> Params;
1248 for (std::list<llvm::PATypeHolder>::iterator I = $3->begin(),
1249 E = $3->end(); I != E; ++I)
1250 Params.push_back(*I);
1251 bool isVarArg = Params.size() && Params.back() == Type::VoidTy;
1252 if (isVarArg) Params.pop_back();
1254 $$ = new PATypeHolder(HandleUpRefs(FunctionType::get(*$1,Params,isVarArg)));
1255 delete $3; // Delete the argument list
1256 delete $1; // Delete the return type handle
1259 | '[' EUINT64VAL 'x' UpRTypes ']' { // Sized array type?
1260 $$ = new PATypeHolder(HandleUpRefs(ArrayType::get(*$4, (unsigned)$2)));
1264 | '<' EUINT64VAL 'x' UpRTypes '>' { // Packed array type?
1265 const llvm::Type* ElemTy = $4->get();
1266 if ((unsigned)$2 != $2)
1267 GEN_ERROR("Unsigned result not equal to signed result");
1268 if (!ElemTy->isPrimitiveType())
1269 GEN_ERROR("Elemental type of a PackedType must be primitive");
1270 if (!isPowerOf2_32($2))
1271 GEN_ERROR("Vector length should be a power of 2!");
1272 $$ = new PATypeHolder(HandleUpRefs(PackedType::get(*$4, (unsigned)$2)));
1276 | '{' TypeListI '}' { // Structure type?
1277 std::vector<const Type*> Elements;
1278 for (std::list<llvm::PATypeHolder>::iterator I = $2->begin(),
1279 E = $2->end(); I != E; ++I)
1280 Elements.push_back(*I);
1282 $$ = new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
1286 | '{' '}' { // Empty structure type?
1287 $$ = new PATypeHolder(StructType::get(std::vector<const Type*>()));
1290 | UpRTypes '*' { // Pointer type?
1291 $$ = new PATypeHolder(HandleUpRefs(PointerType::get(*$1)));
1296 // TypeList - Used for struct declarations and as a basis for function type
1297 // declaration type lists
1299 TypeListI : UpRTypes {
1300 $$ = new std::list<PATypeHolder>();
1301 $$->push_back(*$1); delete $1;
1304 | TypeListI ',' UpRTypes {
1305 ($$=$1)->push_back(*$3); delete $3;
1309 // ArgTypeList - List of types for a function type declaration...
1310 ArgTypeListI : TypeListI
1311 | TypeListI ',' DOTDOTDOT {
1312 ($$=$1)->push_back(Type::VoidTy);
1316 ($$ = new std::list<PATypeHolder>())->push_back(Type::VoidTy);
1320 $$ = new std::list<PATypeHolder>();
1324 // ConstVal - The various declarations that go into the constant pool. This
1325 // production is used ONLY to represent constants that show up AFTER a 'const',
1326 // 'constant' or 'global' token at global scope. Constants that can be inlined
1327 // into other expressions (such as integers and constexprs) are handled by the
1328 // ResolvedVal, ValueRef and ConstValueRef productions.
1330 ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
1331 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1333 GEN_ERROR("Cannot make array constant with type: '" +
1334 (*$1)->getDescription() + "'!");
1335 const Type *ETy = ATy->getElementType();
1336 int NumElements = ATy->getNumElements();
1338 // Verify that we have the correct size...
1339 if (NumElements != -1 && NumElements != (int)$3->size())
1340 GEN_ERROR("Type mismatch: constant sized array initialized with " +
1341 utostr($3->size()) + " arguments, but has size of " +
1342 itostr(NumElements) + "!");
1344 // Verify all elements are correct type!
1345 for (unsigned i = 0; i < $3->size(); i++) {
1346 if (ETy != (*$3)[i]->getType())
1347 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1348 ETy->getDescription() +"' as required!\nIt is of type '"+
1349 (*$3)[i]->getType()->getDescription() + "'.");
1352 $$ = ConstantArray::get(ATy, *$3);
1353 delete $1; delete $3;
1357 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1359 GEN_ERROR("Cannot make array constant with type: '" +
1360 (*$1)->getDescription() + "'!");
1362 int NumElements = ATy->getNumElements();
1363 if (NumElements != -1 && NumElements != 0)
1364 GEN_ERROR("Type mismatch: constant sized array initialized with 0"
1365 " arguments, but has size of " + itostr(NumElements) +"!");
1366 $$ = ConstantArray::get(ATy, std::vector<Constant*>());
1370 | Types 'c' STRINGCONSTANT {
1371 const ArrayType *ATy = dyn_cast<ArrayType>($1->get());
1373 GEN_ERROR("Cannot make array constant with type: '" +
1374 (*$1)->getDescription() + "'!");
1376 int NumElements = ATy->getNumElements();
1377 const Type *ETy = ATy->getElementType();
1378 char *EndStr = UnEscapeLexed($3, true);
1379 if (NumElements != -1 && NumElements != (EndStr-$3))
1380 GEN_ERROR("Can't build string constant of size " +
1381 itostr((int)(EndStr-$3)) +
1382 " when array has size " + itostr(NumElements) + "!");
1383 std::vector<Constant*> Vals;
1384 if (ETy == Type::SByteTy) {
1385 for (signed char *C = (signed char *)$3; C != (signed char *)EndStr; ++C)
1386 Vals.push_back(ConstantSInt::get(ETy, *C));
1387 } else if (ETy == Type::UByteTy) {
1388 for (unsigned char *C = (unsigned char *)$3;
1389 C != (unsigned char*)EndStr; ++C)
1390 Vals.push_back(ConstantUInt::get(ETy, *C));
1393 GEN_ERROR("Cannot build string arrays of non byte sized elements!");
1396 $$ = ConstantArray::get(ATy, Vals);
1400 | Types '<' ConstVector '>' { // Nonempty unsized arr
1401 const PackedType *PTy = dyn_cast<PackedType>($1->get());
1403 GEN_ERROR("Cannot make packed constant with type: '" +
1404 (*$1)->getDescription() + "'!");
1405 const Type *ETy = PTy->getElementType();
1406 int NumElements = PTy->getNumElements();
1408 // Verify that we have the correct size...
1409 if (NumElements != -1 && NumElements != (int)$3->size())
1410 GEN_ERROR("Type mismatch: constant sized packed initialized with " +
1411 utostr($3->size()) + " arguments, but has size of " +
1412 itostr(NumElements) + "!");
1414 // Verify all elements are correct type!
1415 for (unsigned i = 0; i < $3->size(); i++) {
1416 if (ETy != (*$3)[i]->getType())
1417 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
1418 ETy->getDescription() +"' as required!\nIt is of type '"+
1419 (*$3)[i]->getType()->getDescription() + "'.");
1422 $$ = ConstantPacked::get(PTy, *$3);
1423 delete $1; delete $3;
1426 | Types '{' ConstVector '}' {
1427 const StructType *STy = dyn_cast<StructType>($1->get());
1429 GEN_ERROR("Cannot make struct constant with type: '" +
1430 (*$1)->getDescription() + "'!");
1432 if ($3->size() != STy->getNumContainedTypes())
1433 GEN_ERROR("Illegal number of initializers for structure type!");
1435 // Check to ensure that constants are compatible with the type initializer!
1436 for (unsigned i = 0, e = $3->size(); i != e; ++i)
1437 if ((*$3)[i]->getType() != STy->getElementType(i))
1438 GEN_ERROR("Expected type '" +
1439 STy->getElementType(i)->getDescription() +
1440 "' for element #" + utostr(i) +
1441 " of structure initializer!");
1443 $$ = ConstantStruct::get(STy, *$3);
1444 delete $1; delete $3;
1448 const StructType *STy = dyn_cast<StructType>($1->get());
1450 GEN_ERROR("Cannot make struct constant with type: '" +
1451 (*$1)->getDescription() + "'!");
1453 if (STy->getNumContainedTypes() != 0)
1454 GEN_ERROR("Illegal number of initializers for structure type!");
1456 $$ = ConstantStruct::get(STy, std::vector<Constant*>());
1461 const PointerType *PTy = dyn_cast<PointerType>($1->get());
1463 GEN_ERROR("Cannot make null pointer constant with type: '" +
1464 (*$1)->getDescription() + "'!");
1466 $$ = ConstantPointerNull::get(PTy);
1471 $$ = UndefValue::get($1->get());
1475 | Types SymbolicValueRef {
1476 const PointerType *Ty = dyn_cast<PointerType>($1->get());
1478 GEN_ERROR("Global const reference must be a pointer type!");
1480 // ConstExprs can exist in the body of a function, thus creating
1481 // GlobalValues whenever they refer to a variable. Because we are in
1482 // the context of a function, getValNonImprovising will search the functions
1483 // symbol table instead of the module symbol table for the global symbol,
1484 // which throws things all off. To get around this, we just tell
1485 // getValNonImprovising that we are at global scope here.
1487 Function *SavedCurFn = CurFun.CurrentFunction;
1488 CurFun.CurrentFunction = 0;
1490 Value *V = getValNonImprovising(Ty, $2);
1493 CurFun.CurrentFunction = SavedCurFn;
1495 // If this is an initializer for a constant pointer, which is referencing a
1496 // (currently) undefined variable, create a stub now that shall be replaced
1497 // in the future with the right type of variable.
1500 assert(isa<PointerType>(Ty) && "Globals may only be used as pointers!");
1501 const PointerType *PT = cast<PointerType>(Ty);
1503 // First check to see if the forward references value is already created!
1504 PerModuleInfo::GlobalRefsType::iterator I =
1505 CurModule.GlobalRefs.find(std::make_pair(PT, $2));
1507 if (I != CurModule.GlobalRefs.end()) {
1508 V = I->second; // Placeholder already exists, use it...
1512 if ($2.Type == ValID::NameVal) Name = $2.Name;
1514 // Create the forward referenced global.
1516 if (const FunctionType *FTy =
1517 dyn_cast<FunctionType>(PT->getElementType())) {
1518 GV = new Function(FTy, GlobalValue::ExternalLinkage, Name,
1519 CurModule.CurrentModule);
1521 GV = new GlobalVariable(PT->getElementType(), false,
1522 GlobalValue::ExternalLinkage, 0,
1523 Name, CurModule.CurrentModule);
1526 // Keep track of the fact that we have a forward ref to recycle it
1527 CurModule.GlobalRefs.insert(std::make_pair(std::make_pair(PT, $2), GV));
1532 $$ = cast<GlobalValue>(V);
1533 delete $1; // Free the type handle
1537 if ($1->get() != $2->getType())
1538 GEN_ERROR("Mismatched types for constant expression!");
1543 | Types ZEROINITIALIZER {
1544 const Type *Ty = $1->get();
1545 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy || isa<OpaqueType>(Ty))
1546 GEN_ERROR("Cannot create a null initialized value of this type!");
1547 $$ = Constant::getNullValue(Ty);
1552 ConstVal : SIntType EINT64VAL { // integral constants
1553 if (!ConstantSInt::isValueValidForType($1, $2))
1554 GEN_ERROR("Constant value doesn't fit in type!");
1555 $$ = ConstantSInt::get($1, $2);
1558 | UIntType EUINT64VAL { // integral constants
1559 if (!ConstantUInt::isValueValidForType($1, $2))
1560 GEN_ERROR("Constant value doesn't fit in type!");
1561 $$ = ConstantUInt::get($1, $2);
1564 | BOOL TRUETOK { // Boolean constants
1565 $$ = ConstantBool::True;
1568 | BOOL FALSETOK { // Boolean constants
1569 $$ = ConstantBool::False;
1572 | FPType FPVAL { // Float & Double constants
1573 if (!ConstantFP::isValueValidForType($1, $2))
1574 GEN_ERROR("Floating point constant invalid for type!!");
1575 $$ = ConstantFP::get($1, $2);
1580 ConstExpr: CAST '(' ConstVal TO Types ')' {
1581 if (!$3->getType()->isFirstClassType())
1582 GEN_ERROR("cast constant expression from a non-primitive type: '" +
1583 $3->getType()->getDescription() + "'!");
1584 if (!$5->get()->isFirstClassType())
1585 GEN_ERROR("cast constant expression to a non-primitive type: '" +
1586 $5->get()->getDescription() + "'!");
1587 $$ = ConstantExpr::getCast($3, $5->get());
1591 | GETELEMENTPTR '(' ConstVal IndexList ')' {
1592 if (!isa<PointerType>($3->getType()))
1593 GEN_ERROR("GetElementPtr requires a pointer operand!");
1595 // LLVM 1.2 and earlier used ubyte struct indices. Convert any ubyte struct
1596 // indices to uint struct indices for compatibility.
1597 generic_gep_type_iterator<std::vector<Value*>::iterator>
1598 GTI = gep_type_begin($3->getType(), $4->begin(), $4->end()),
1599 GTE = gep_type_end($3->getType(), $4->begin(), $4->end());
1600 for (unsigned i = 0, e = $4->size(); i != e && GTI != GTE; ++i, ++GTI)
1601 if (isa<StructType>(*GTI)) // Only change struct indices
1602 if (ConstantUInt *CUI = dyn_cast<ConstantUInt>((*$4)[i]))
1603 if (CUI->getType() == Type::UByteTy)
1604 (*$4)[i] = ConstantExpr::getCast(CUI, Type::UIntTy);
1607 GetElementPtrInst::getIndexedType($3->getType(), *$4, true);
1609 GEN_ERROR("Index list invalid for constant getelementptr!");
1611 std::vector<Constant*> IdxVec;
1612 for (unsigned i = 0, e = $4->size(); i != e; ++i)
1613 if (Constant *C = dyn_cast<Constant>((*$4)[i]))
1614 IdxVec.push_back(C);
1616 GEN_ERROR("Indices to constant getelementptr must be constants!");
1620 $$ = ConstantExpr::getGetElementPtr($3, IdxVec);
1623 | SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1624 if ($3->getType() != Type::BoolTy)
1625 GEN_ERROR("Select condition must be of boolean type!");
1626 if ($5->getType() != $7->getType())
1627 GEN_ERROR("Select operand types must match!");
1628 $$ = ConstantExpr::getSelect($3, $5, $7);
1631 | ArithmeticOps '(' ConstVal ',' ConstVal ')' {
1632 if ($3->getType() != $5->getType())
1633 GEN_ERROR("Binary operator types must match!");
1634 // HACK: llvm 1.3 and earlier used to emit invalid pointer constant exprs.
1635 // To retain backward compatibility with these early compilers, we emit a
1636 // cast to the appropriate integer type automatically if we are in the
1637 // broken case. See PR424 for more information.
1638 if (!isa<PointerType>($3->getType())) {
1639 $$ = ConstantExpr::get($1, $3, $5);
1641 const Type *IntPtrTy = 0;
1642 switch (CurModule.CurrentModule->getPointerSize()) {
1643 case Module::Pointer32: IntPtrTy = Type::IntTy; break;
1644 case Module::Pointer64: IntPtrTy = Type::LongTy; break;
1645 default: GEN_ERROR("invalid pointer binary constant expr!");
1647 $$ = ConstantExpr::get($1, ConstantExpr::getCast($3, IntPtrTy),
1648 ConstantExpr::getCast($5, IntPtrTy));
1649 $$ = ConstantExpr::getCast($$, $3->getType());
1653 | LogicalOps '(' ConstVal ',' ConstVal ')' {
1654 if ($3->getType() != $5->getType())
1655 GEN_ERROR("Logical operator types must match!");
1656 if (!$3->getType()->isIntegral()) {
1657 if (!isa<PackedType>($3->getType()) ||
1658 !cast<PackedType>($3->getType())->getElementType()->isIntegral())
1659 GEN_ERROR("Logical operator requires integral operands!");
1661 $$ = ConstantExpr::get($1, $3, $5);
1664 | SetCondOps '(' ConstVal ',' ConstVal ')' {
1665 if ($3->getType() != $5->getType())
1666 GEN_ERROR("setcc operand types must match!");
1667 $$ = ConstantExpr::get($1, $3, $5);
1670 | ShiftOps '(' ConstVal ',' ConstVal ')' {
1671 if ($5->getType() != Type::UByteTy)
1672 GEN_ERROR("Shift count for shift constant must be unsigned byte!");
1673 if (!$3->getType()->isInteger())
1674 GEN_ERROR("Shift constant expression requires integer operand!");
1675 $$ = ConstantExpr::get($1, $3, $5);
1678 | EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
1679 if (!ExtractElementInst::isValidOperands($3, $5))
1680 GEN_ERROR("Invalid extractelement operands!");
1681 $$ = ConstantExpr::getExtractElement($3, $5);
1684 | INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1685 if (!InsertElementInst::isValidOperands($3, $5, $7))
1686 GEN_ERROR("Invalid insertelement operands!");
1687 $$ = ConstantExpr::getInsertElement($3, $5, $7);
1690 | SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
1691 if (!ShuffleVectorInst::isValidOperands($3, $5, $7))
1692 GEN_ERROR("Invalid shufflevector operands!");
1693 $$ = ConstantExpr::getShuffleVector($3, $5, $7);
1698 // ConstVector - A list of comma separated constants.
1699 ConstVector : ConstVector ',' ConstVal {
1700 ($$ = $1)->push_back($3);
1704 $$ = new std::vector<Constant*>();
1710 // GlobalType - Match either GLOBAL or CONSTANT for global declarations...
1711 GlobalType : GLOBAL { $$ = false; } | CONSTANT { $$ = true; };
1714 //===----------------------------------------------------------------------===//
1715 // Rules to match Modules
1716 //===----------------------------------------------------------------------===//
1718 // Module rule: Capture the result of parsing the whole file into a result
1721 Module : FunctionList {
1722 $$ = ParserResult = $1;
1723 CurModule.ModuleDone();
1727 // FunctionList - A list of functions, preceeded by a constant pool.
1729 FunctionList : FunctionList Function {
1731 CurFun.FunctionDone();
1734 | FunctionList FunctionProto {
1738 | FunctionList MODULE ASM_TOK AsmBlock {
1742 | FunctionList IMPLEMENTATION {
1747 $$ = CurModule.CurrentModule;
1748 // Emit an error if there are any unresolved types left.
1749 if (!CurModule.LateResolveTypes.empty()) {
1750 const ValID &DID = CurModule.LateResolveTypes.begin()->first;
1751 if (DID.Type == ValID::NameVal) {
1752 GEN_ERROR("Reference to an undefined type: '"+DID.getName() + "'");
1754 GEN_ERROR("Reference to an undefined type: #" + itostr(DID.Num));
1760 // ConstPool - Constants with optional names assigned to them.
1761 ConstPool : ConstPool OptAssign TYPE TypesV {
1762 // Eagerly resolve types. This is not an optimization, this is a
1763 // requirement that is due to the fact that we could have this:
1765 // %list = type { %list * }
1766 // %list = type { %list * } ; repeated type decl
1768 // If types are not resolved eagerly, then the two types will not be
1769 // determined to be the same type!
1771 ResolveTypeTo($2, *$4);
1773 if (!setTypeName(*$4, $2) && !$2) {
1775 // If this is a named type that is not a redefinition, add it to the slot
1777 CurModule.Types.push_back(*$4);
1783 | ConstPool FunctionProto { // Function prototypes can be in const pool
1786 | ConstPool MODULE ASM_TOK AsmBlock { // Asm blocks can be in the const pool
1789 | ConstPool OptAssign OptLinkage GlobalType ConstVal {
1791 GEN_ERROR("Global value initializer is not a constant!");
1792 CurGV = ParseGlobalVariable($2, $3, $4, $5->getType(), $5);
1794 } GlobalVarAttributes {
1797 | ConstPool OptAssign EXTERNAL GlobalType Types {
1798 CurGV = ParseGlobalVariable($2, GlobalValue::ExternalLinkage, $4, *$5, 0);
1801 } GlobalVarAttributes {
1805 | ConstPool OptAssign DLLIMPORT GlobalType Types {
1806 CurGV = ParseGlobalVariable($2, GlobalValue::DLLImportLinkage, $4, *$5, 0);
1809 } GlobalVarAttributes {
1813 | ConstPool OptAssign EXTERN_WEAK GlobalType Types {
1815 ParseGlobalVariable($2, GlobalValue::ExternalWeakLinkage, $4, *$5, 0);
1818 } GlobalVarAttributes {
1822 | ConstPool TARGET TargetDefinition {
1825 | ConstPool DEPLIBS '=' LibrariesDefinition {
1828 | /* empty: end of list */ {
1832 AsmBlock : STRINGCONSTANT {
1833 const std::string &AsmSoFar = CurModule.CurrentModule->getModuleInlineAsm();
1834 char *EndStr = UnEscapeLexed($1, true);
1835 std::string NewAsm($1, EndStr);
1838 if (AsmSoFar.empty())
1839 CurModule.CurrentModule->setModuleInlineAsm(NewAsm);
1841 CurModule.CurrentModule->setModuleInlineAsm(AsmSoFar+"\n"+NewAsm);
1845 BigOrLittle : BIG { $$ = Module::BigEndian; };
1846 BigOrLittle : LITTLE { $$ = Module::LittleEndian; };
1848 TargetDefinition : ENDIAN '=' BigOrLittle {
1849 CurModule.CurrentModule->setEndianness($3);
1852 | POINTERSIZE '=' EUINT64VAL {
1854 CurModule.CurrentModule->setPointerSize(Module::Pointer32);
1856 CurModule.CurrentModule->setPointerSize(Module::Pointer64);
1858 GEN_ERROR("Invalid pointer size: '" + utostr($3) + "'!");
1861 | TRIPLE '=' STRINGCONSTANT {
1862 CurModule.CurrentModule->setTargetTriple($3);
1867 LibrariesDefinition : '[' LibList ']';
1869 LibList : LibList ',' STRINGCONSTANT {
1870 CurModule.CurrentModule->addLibrary($3);
1875 CurModule.CurrentModule->addLibrary($1);
1879 | /* empty: end of list */ {
1884 //===----------------------------------------------------------------------===//
1885 // Rules to match Function Headers
1886 //===----------------------------------------------------------------------===//
1888 Name : VAR_ID | STRINGCONSTANT;
1889 OptName : Name | /*empty*/ { $$ = 0; };
1891 ArgVal : Types OptName {
1892 if (*$1 == Type::VoidTy)
1893 GEN_ERROR("void typed arguments are invalid!");
1894 $$ = new std::pair<PATypeHolder*, char*>($1, $2);
1898 ArgListH : ArgListH ',' ArgVal {
1905 $$ = new std::vector<std::pair<PATypeHolder*,char*> >();
1911 ArgList : ArgListH {
1915 | ArgListH ',' DOTDOTDOT {
1917 $$->push_back(std::pair<PATypeHolder*,
1918 char*>(new PATypeHolder(Type::VoidTy), 0));
1922 $$ = new std::vector<std::pair<PATypeHolder*,char*> >();
1923 $$->push_back(std::make_pair(new PATypeHolder(Type::VoidTy), (char*)0));
1931 FunctionHeaderH : OptCallingConv TypesV Name '(' ArgList ')'
1932 OptSection OptAlign {
1934 std::string FunctionName($3);
1935 free($3); // Free strdup'd memory!
1937 if (!(*$2)->isFirstClassType() && *$2 != Type::VoidTy)
1938 GEN_ERROR("LLVM functions cannot return aggregate types!");
1940 std::vector<const Type*> ParamTypeList;
1941 if ($5) { // If there are arguments...
1942 for (std::vector<std::pair<PATypeHolder*,char*> >::iterator I = $5->begin();
1943 I != $5->end(); ++I)
1944 ParamTypeList.push_back(I->first->get());
1947 bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
1948 if (isVarArg) ParamTypeList.pop_back();
1950 const FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg);
1951 const PointerType *PFT = PointerType::get(FT);
1955 if (!FunctionName.empty()) {
1956 ID = ValID::create((char*)FunctionName.c_str());
1958 ID = ValID::create((int)CurModule.Values[PFT].size());
1962 // See if this function was forward referenced. If so, recycle the object.
1963 if (GlobalValue *FWRef = CurModule.GetForwardRefForGlobal(PFT, ID)) {
1964 // Move the function to the end of the list, from whereever it was
1965 // previously inserted.
1966 Fn = cast<Function>(FWRef);
1967 CurModule.CurrentModule->getFunctionList().remove(Fn);
1968 CurModule.CurrentModule->getFunctionList().push_back(Fn);
1969 } else if (!FunctionName.empty() && // Merge with an earlier prototype?
1970 (Fn = CurModule.CurrentModule->getFunction(FunctionName, FT))) {
1971 // If this is the case, either we need to be a forward decl, or it needs
1973 if (!CurFun.isDeclare && !Fn->isExternal())
1974 GEN_ERROR("Redefinition of function '" + FunctionName + "'!");
1976 // Make sure to strip off any argument names so we can't get conflicts.
1977 if (Fn->isExternal())
1978 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
1981 } else { // Not already defined?
1982 Fn = new Function(FT, GlobalValue::ExternalLinkage, FunctionName,
1983 CurModule.CurrentModule);
1985 InsertValue(Fn, CurModule.Values);
1988 CurFun.FunctionStart(Fn);
1990 if (CurFun.isDeclare) {
1991 // If we have declaration, always overwrite linkage. This will allow us to
1992 // correctly handle cases, when pointer to function is passed as argument to
1993 // another function.
1994 Fn->setLinkage(CurFun.Linkage);
1996 Fn->setCallingConv($1);
1997 Fn->setAlignment($8);
2003 // Add all of the arguments we parsed to the function...
2004 if ($5) { // Is null if empty...
2005 if (isVarArg) { // Nuke the last entry
2006 assert($5->back().first->get() == Type::VoidTy && $5->back().second == 0&&
2007 "Not a varargs marker!");
2008 delete $5->back().first;
2009 $5->pop_back(); // Delete the last entry
2011 Function::arg_iterator ArgIt = Fn->arg_begin();
2012 for (std::vector<std::pair<PATypeHolder*,char*> >::iterator I = $5->begin();
2013 I != $5->end(); ++I, ++ArgIt) {
2014 delete I->first; // Delete the typeholder...
2016 setValueName(ArgIt, I->second); // Insert arg into symtab...
2021 delete $5; // We're now done with the argument list
2026 BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
2028 FunctionHeader : OptLinkage FunctionHeaderH BEGIN {
2029 $$ = CurFun.CurrentFunction;
2031 // Make sure that we keep track of the linkage type even if there was a
2032 // previous "declare".
2036 END : ENDTOK | '}'; // Allow end of '}' to end a function
2038 Function : BasicBlockList END {
2043 FnDeclareLinkage: /*default*/ |
2044 DLLIMPORT { CurFun.Linkage = GlobalValue::DLLImportLinkage } |
2045 EXTERN_WEAK { CurFun.Linkage = GlobalValue::DLLImportLinkage };
2047 FunctionProto : DECLARE { CurFun.isDeclare = true; } FnDeclareLinkage FunctionHeaderH {
2048 $$ = CurFun.CurrentFunction;
2049 CurFun.FunctionDone();
2053 //===----------------------------------------------------------------------===//
2054 // Rules to match Basic Blocks
2055 //===----------------------------------------------------------------------===//
2057 OptSideEffect : /* empty */ {
2066 ConstValueRef : ESINT64VAL { // A reference to a direct constant
2067 $$ = ValID::create($1);
2071 $$ = ValID::create($1);
2074 | FPVAL { // Perhaps it's an FP constant?
2075 $$ = ValID::create($1);
2079 $$ = ValID::create(ConstantBool::True);
2083 $$ = ValID::create(ConstantBool::False);
2087 $$ = ValID::createNull();
2091 $$ = ValID::createUndef();
2094 | ZEROINITIALIZER { // A vector zero constant.
2095 $$ = ValID::createZeroInit();
2098 | '<' ConstVector '>' { // Nonempty unsized packed vector
2099 const Type *ETy = (*$2)[0]->getType();
2100 int NumElements = $2->size();
2102 PackedType* pt = PackedType::get(ETy, NumElements);
2103 PATypeHolder* PTy = new PATypeHolder(
2111 // Verify all elements are correct type!
2112 for (unsigned i = 0; i < $2->size(); i++) {
2113 if (ETy != (*$2)[i]->getType())
2114 GEN_ERROR("Element #" + utostr(i) + " is not of type '" +
2115 ETy->getDescription() +"' as required!\nIt is of type '" +
2116 (*$2)[i]->getType()->getDescription() + "'.");
2119 $$ = ValID::create(ConstantPacked::get(pt, *$2));
2120 delete PTy; delete $2;
2124 $$ = ValID::create($1);
2127 | ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
2128 char *End = UnEscapeLexed($3, true);
2129 std::string AsmStr = std::string($3, End);
2130 End = UnEscapeLexed($5, true);
2131 std::string Constraints = std::string($5, End);
2132 $$ = ValID::createInlineAsm(AsmStr, Constraints, $2);
2138 // SymbolicValueRef - Reference to one of two ways of symbolically refering to
2141 SymbolicValueRef : INTVAL { // Is it an integer reference...?
2142 $$ = ValID::create($1);
2145 | Name { // Is it a named reference...?
2146 $$ = ValID::create($1);
2150 // ValueRef - A reference to a definition... either constant or symbolic
2151 ValueRef : SymbolicValueRef | ConstValueRef;
2154 // ResolvedVal - a <type> <value> pair. This is used only in cases where the
2155 // type immediately preceeds the value reference, and allows complex constant
2156 // pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
2157 ResolvedVal : Types ValueRef {
2158 $$ = getVal(*$1, $2); delete $1;
2162 BasicBlockList : BasicBlockList BasicBlock {
2166 | FunctionHeader BasicBlock { // Do not allow functions with 0 basic blocks
2172 // Basic blocks are terminated by branching instructions:
2173 // br, br/cc, switch, ret
2175 BasicBlock : InstructionList OptAssign BBTerminatorInst {
2176 setValueName($3, $2);
2180 $1->getInstList().push_back($3);
2186 InstructionList : InstructionList Inst {
2187 $1->getInstList().push_back($2);
2192 $$ = CurBB = getBBVal(ValID::create((int)CurFun.NextBBNum++), true);
2195 // Make sure to move the basic block to the correct location in the
2196 // function, instead of leaving it inserted wherever it was first
2198 Function::BasicBlockListType &BBL =
2199 CurFun.CurrentFunction->getBasicBlockList();
2200 BBL.splice(BBL.end(), BBL, $$);
2204 $$ = CurBB = getBBVal(ValID::create($1), true);
2207 // Make sure to move the basic block to the correct location in the
2208 // function, instead of leaving it inserted wherever it was first
2210 Function::BasicBlockListType &BBL =
2211 CurFun.CurrentFunction->getBasicBlockList();
2212 BBL.splice(BBL.end(), BBL, $$);
2216 BBTerminatorInst : RET ResolvedVal { // Return with a result...
2217 $$ = new ReturnInst($2);
2220 | RET VOID { // Return with no result...
2221 $$ = new ReturnInst();
2224 | BR LABEL ValueRef { // Unconditional Branch...
2225 BasicBlock* tmpBB = getBBVal($3);
2227 $$ = new BranchInst(tmpBB);
2228 } // Conditional Branch...
2229 | BR BOOL ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
2230 BasicBlock* tmpBBA = getBBVal($6);
2232 BasicBlock* tmpBBB = getBBVal($9);
2234 Value* tmpVal = getVal(Type::BoolTy, $3);
2236 $$ = new BranchInst(tmpBBA, tmpBBB, tmpVal);
2238 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
2239 Value* tmpVal = getVal($2, $3);
2241 BasicBlock* tmpBB = getBBVal($6);
2243 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, $8->size());
2246 std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
2248 for (; I != E; ++I) {
2249 if (ConstantInt *CI = dyn_cast<ConstantInt>(I->first))
2250 S->addCase(CI, I->second);
2252 GEN_ERROR("Switch case is constant, but not a simple integer!");
2257 | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
2258 Value* tmpVal = getVal($2, $3);
2260 BasicBlock* tmpBB = getBBVal($6);
2262 SwitchInst *S = new SwitchInst(tmpVal, tmpBB, 0);
2266 | INVOKE OptCallingConv TypesV ValueRef '(' ValueRefListE ')'
2267 TO LABEL ValueRef UNWIND LABEL ValueRef {
2268 const PointerType *PFTy;
2269 const FunctionType *Ty;
2271 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2272 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2273 // Pull out the types of all of the arguments...
2274 std::vector<const Type*> ParamTypes;
2276 for (std::vector<Value*>::iterator I = $6->begin(), E = $6->end();
2278 ParamTypes.push_back((*I)->getType());
2281 bool isVarArg = ParamTypes.size() && ParamTypes.back() == Type::VoidTy;
2282 if (isVarArg) ParamTypes.pop_back();
2284 Ty = FunctionType::get($3->get(), ParamTypes, isVarArg);
2285 PFTy = PointerType::get(Ty);
2288 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2290 BasicBlock *Normal = getBBVal($10);
2292 BasicBlock *Except = getBBVal($13);
2295 // Create the call node...
2296 if (!$6) { // Has no arguments?
2297 $$ = new InvokeInst(V, Normal, Except, std::vector<Value*>());
2298 } else { // Has arguments?
2299 // Loop through FunctionType's arguments and ensure they are specified
2302 FunctionType::param_iterator I = Ty->param_begin();
2303 FunctionType::param_iterator E = Ty->param_end();
2304 std::vector<Value*>::iterator ArgI = $6->begin(), ArgE = $6->end();
2306 for (; ArgI != ArgE && I != E; ++ArgI, ++I)
2307 if ((*ArgI)->getType() != *I)
2308 GEN_ERROR("Parameter " +(*ArgI)->getName()+ " is not of type '" +
2309 (*I)->getDescription() + "'!");
2311 if (I != E || (ArgI != ArgE && !Ty->isVarArg()))
2312 GEN_ERROR("Invalid number of parameters detected!");
2314 $$ = new InvokeInst(V, Normal, Except, *$6);
2316 cast<InvokeInst>($$)->setCallingConv($2);
2323 $$ = new UnwindInst();
2327 $$ = new UnreachableInst();
2333 JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
2335 Constant *V = cast<Constant>(getValNonImprovising($2, $3));
2338 GEN_ERROR("May only switch on a constant pool value!");
2340 BasicBlock* tmpBB = getBBVal($6);
2342 $$->push_back(std::make_pair(V, tmpBB));
2344 | IntType ConstValueRef ',' LABEL ValueRef {
2345 $$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
2346 Constant *V = cast<Constant>(getValNonImprovising($1, $2));
2350 GEN_ERROR("May only switch on a constant pool value!");
2352 BasicBlock* tmpBB = getBBVal($5);
2354 $$->push_back(std::make_pair(V, tmpBB));
2357 Inst : OptAssign InstVal {
2358 // Is this definition named?? if so, assign the name...
2359 setValueName($2, $1);
2366 PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
2367 $$ = new std::list<std::pair<Value*, BasicBlock*> >();
2368 Value* tmpVal = getVal(*$1, $3);
2370 BasicBlock* tmpBB = getBBVal($5);
2372 $$->push_back(std::make_pair(tmpVal, tmpBB));
2375 | PHIList ',' '[' ValueRef ',' ValueRef ']' {
2377 Value* tmpVal = getVal($1->front().first->getType(), $4);
2379 BasicBlock* tmpBB = getBBVal($6);
2381 $1->push_back(std::make_pair(tmpVal, tmpBB));
2385 ValueRefList : ResolvedVal { // Used for call statements, and memory insts...
2386 $$ = new std::vector<Value*>();
2389 | ValueRefList ',' ResolvedVal {
2395 // ValueRefListE - Just like ValueRefList, except that it may also be empty!
2396 ValueRefListE : ValueRefList | /*empty*/ { $$ = 0; };
2398 OptTailCall : TAIL CALL {
2407 InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
2408 if (!(*$2)->isInteger() && !(*$2)->isFloatingPoint() &&
2409 !isa<PackedType>((*$2).get()))
2411 "Arithmetic operator requires integer, FP, or packed operands!");
2412 if (isa<PackedType>((*$2).get()) && $1 == Instruction::Rem)
2413 GEN_ERROR("Rem not supported on packed types!");
2414 Value* val1 = getVal(*$2, $3);
2416 Value* val2 = getVal(*$2, $5);
2418 $$ = BinaryOperator::create($1, val1, val2);
2420 GEN_ERROR("binary operator returned null!");
2423 | LogicalOps Types ValueRef ',' ValueRef {
2424 if (!(*$2)->isIntegral()) {
2425 if (!isa<PackedType>($2->get()) ||
2426 !cast<PackedType>($2->get())->getElementType()->isIntegral())
2427 GEN_ERROR("Logical operator requires integral operands!");
2429 Value* tmpVal1 = getVal(*$2, $3);
2431 Value* tmpVal2 = getVal(*$2, $5);
2433 $$ = BinaryOperator::create($1, tmpVal1, tmpVal2);
2435 GEN_ERROR("binary operator returned null!");
2438 | SetCondOps Types ValueRef ',' ValueRef {
2439 if(isa<PackedType>((*$2).get())) {
2441 "PackedTypes currently not supported in setcc instructions!");
2443 Value* tmpVal1 = getVal(*$2, $3);
2445 Value* tmpVal2 = getVal(*$2, $5);
2447 $$ = new SetCondInst($1, tmpVal1, tmpVal2);
2449 GEN_ERROR("binary operator returned null!");
2453 std::cerr << "WARNING: Use of eliminated 'not' instruction:"
2454 << " Replacing with 'xor'.\n";
2456 Value *Ones = ConstantIntegral::getAllOnesValue($2->getType());
2458 GEN_ERROR("Expected integral type for not instruction!");
2460 $$ = BinaryOperator::create(Instruction::Xor, $2, Ones);
2462 GEN_ERROR("Could not create a xor instruction!");
2465 | ShiftOps ResolvedVal ',' ResolvedVal {
2466 if ($4->getType() != Type::UByteTy)
2467 GEN_ERROR("Shift amount must be ubyte!");
2468 if (!$2->getType()->isInteger())
2469 GEN_ERROR("Shift constant expression requires integer operand!");
2470 $$ = new ShiftInst($1, $2, $4);
2473 | CAST ResolvedVal TO Types {
2474 if (!$4->get()->isFirstClassType())
2475 GEN_ERROR("cast instruction to a non-primitive type: '" +
2476 $4->get()->getDescription() + "'!");
2477 $$ = new CastInst($2, *$4);
2481 | SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2482 if ($2->getType() != Type::BoolTy)
2483 GEN_ERROR("select condition must be boolean!");
2484 if ($4->getType() != $6->getType())
2485 GEN_ERROR("select value types should match!");
2486 $$ = new SelectInst($2, $4, $6);
2489 | VAARG ResolvedVal ',' Types {
2491 $$ = new VAArgInst($2, *$4);
2495 | VAARG_old ResolvedVal ',' Types {
2496 ObsoleteVarArgs = true;
2497 const Type* ArgTy = $2->getType();
2498 Function* NF = CurModule.CurrentModule->
2499 getOrInsertFunction("llvm.va_copy", ArgTy, ArgTy, (Type *)0);
2502 //foo = alloca 1 of t
2506 AllocaInst* foo = new AllocaInst(ArgTy, 0, "vaarg.fix");
2507 CurBB->getInstList().push_back(foo);
2508 CallInst* bar = new CallInst(NF, $2);
2509 CurBB->getInstList().push_back(bar);
2510 CurBB->getInstList().push_back(new StoreInst(bar, foo));
2511 $$ = new VAArgInst(foo, *$4);
2515 | VANEXT_old ResolvedVal ',' Types {
2516 ObsoleteVarArgs = true;
2517 const Type* ArgTy = $2->getType();
2518 Function* NF = CurModule.CurrentModule->
2519 getOrInsertFunction("llvm.va_copy", ArgTy, ArgTy, (Type *)0);
2521 //b = vanext a, t ->
2522 //foo = alloca 1 of t
2525 //tmp = vaarg foo, t
2527 AllocaInst* foo = new AllocaInst(ArgTy, 0, "vanext.fix");
2528 CurBB->getInstList().push_back(foo);
2529 CallInst* bar = new CallInst(NF, $2);
2530 CurBB->getInstList().push_back(bar);
2531 CurBB->getInstList().push_back(new StoreInst(bar, foo));
2532 Instruction* tmp = new VAArgInst(foo, *$4);
2533 CurBB->getInstList().push_back(tmp);
2534 $$ = new LoadInst(foo);
2538 | EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
2539 if (!ExtractElementInst::isValidOperands($2, $4))
2540 GEN_ERROR("Invalid extractelement operands!");
2541 $$ = new ExtractElementInst($2, $4);
2544 | INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2545 if (!InsertElementInst::isValidOperands($2, $4, $6))
2546 GEN_ERROR("Invalid insertelement operands!");
2547 $$ = new InsertElementInst($2, $4, $6);
2550 | SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
2551 if (!ShuffleVectorInst::isValidOperands($2, $4, $6))
2552 GEN_ERROR("Invalid shufflevector operands!");
2553 $$ = new ShuffleVectorInst($2, $4, $6);
2557 const Type *Ty = $2->front().first->getType();
2558 if (!Ty->isFirstClassType())
2559 GEN_ERROR("PHI node operands must be of first class type!");
2560 $$ = new PHINode(Ty);
2561 ((PHINode*)$$)->reserveOperandSpace($2->size());
2562 while ($2->begin() != $2->end()) {
2563 if ($2->front().first->getType() != Ty)
2564 GEN_ERROR("All elements of a PHI node must be of the same type!");
2565 cast<PHINode>($$)->addIncoming($2->front().first, $2->front().second);
2568 delete $2; // Free the list...
2571 | OptTailCall OptCallingConv TypesV ValueRef '(' ValueRefListE ')' {
2572 const PointerType *PFTy;
2573 const FunctionType *Ty;
2575 if (!(PFTy = dyn_cast<PointerType>($3->get())) ||
2576 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2577 // Pull out the types of all of the arguments...
2578 std::vector<const Type*> ParamTypes;
2580 for (std::vector<Value*>::iterator I = $6->begin(), E = $6->end();
2582 ParamTypes.push_back((*I)->getType());
2585 bool isVarArg = ParamTypes.size() && ParamTypes.back() == Type::VoidTy;
2586 if (isVarArg) ParamTypes.pop_back();
2588 if (!(*$3)->isFirstClassType() && *$3 != Type::VoidTy)
2589 GEN_ERROR("LLVM functions cannot return aggregate types!");
2591 Ty = FunctionType::get($3->get(), ParamTypes, isVarArg);
2592 PFTy = PointerType::get(Ty);
2595 Value *V = getVal(PFTy, $4); // Get the function we're calling...
2598 // Create the call node...
2599 if (!$6) { // Has no arguments?
2600 // Make sure no arguments is a good thing!
2601 if (Ty->getNumParams() != 0)
2602 GEN_ERROR("No arguments passed to a function that "
2603 "expects arguments!");
2605 $$ = new CallInst(V, std::vector<Value*>());
2606 } else { // Has arguments?
2607 // Loop through FunctionType's arguments and ensure they are specified
2610 FunctionType::param_iterator I = Ty->param_begin();
2611 FunctionType::param_iterator E = Ty->param_end();
2612 std::vector<Value*>::iterator ArgI = $6->begin(), ArgE = $6->end();
2614 for (; ArgI != ArgE && I != E; ++ArgI, ++I)
2615 if ((*ArgI)->getType() != *I)
2616 GEN_ERROR("Parameter " +(*ArgI)->getName()+ " is not of type '" +
2617 (*I)->getDescription() + "'!");
2619 if (I != E || (ArgI != ArgE && !Ty->isVarArg()))
2620 GEN_ERROR("Invalid number of parameters detected!");
2622 $$ = new CallInst(V, *$6);
2624 cast<CallInst>($$)->setTailCall($1);
2625 cast<CallInst>($$)->setCallingConv($2);
2636 // IndexList - List of indices for GEP based instructions...
2637 IndexList : ',' ValueRefList {
2641 $$ = new std::vector<Value*>();
2645 OptVolatile : VOLATILE {
2656 MemoryInst : MALLOC Types OptCAlign {
2657 $$ = new MallocInst(*$2, 0, $3);
2661 | MALLOC Types ',' UINT ValueRef OptCAlign {
2662 Value* tmpVal = getVal($4, $5);
2664 $$ = new MallocInst(*$2, tmpVal, $6);
2667 | ALLOCA Types OptCAlign {
2668 $$ = new AllocaInst(*$2, 0, $3);
2672 | ALLOCA Types ',' UINT ValueRef OptCAlign {
2673 Value* tmpVal = getVal($4, $5);
2675 $$ = new AllocaInst(*$2, tmpVal, $6);
2678 | FREE ResolvedVal {
2679 if (!isa<PointerType>($2->getType()))
2680 GEN_ERROR("Trying to free nonpointer type " +
2681 $2->getType()->getDescription() + "!");
2682 $$ = new FreeInst($2);
2686 | OptVolatile LOAD Types ValueRef {
2687 if (!isa<PointerType>($3->get()))
2688 GEN_ERROR("Can't load from nonpointer type: " +
2689 (*$3)->getDescription());
2690 if (!cast<PointerType>($3->get())->getElementType()->isFirstClassType())
2691 GEN_ERROR("Can't load from pointer of non-first-class type: " +
2692 (*$3)->getDescription());
2693 Value* tmpVal = getVal(*$3, $4);
2695 $$ = new LoadInst(tmpVal, "", $1);
2698 | OptVolatile STORE ResolvedVal ',' Types ValueRef {
2699 const PointerType *PT = dyn_cast<PointerType>($5->get());
2701 GEN_ERROR("Can't store to a nonpointer type: " +
2702 (*$5)->getDescription());
2703 const Type *ElTy = PT->getElementType();
2704 if (ElTy != $3->getType())
2705 GEN_ERROR("Can't store '" + $3->getType()->getDescription() +
2706 "' into space of type '" + ElTy->getDescription() + "'!");
2708 Value* tmpVal = getVal(*$5, $6);
2710 $$ = new StoreInst($3, tmpVal, $1);
2713 | GETELEMENTPTR Types ValueRef IndexList {
2714 if (!isa<PointerType>($2->get()))
2715 GEN_ERROR("getelementptr insn requires pointer operand!");
2717 // LLVM 1.2 and earlier used ubyte struct indices. Convert any ubyte struct
2718 // indices to uint struct indices for compatibility.
2719 generic_gep_type_iterator<std::vector<Value*>::iterator>
2720 GTI = gep_type_begin($2->get(), $4->begin(), $4->end()),
2721 GTE = gep_type_end($2->get(), $4->begin(), $4->end());
2722 for (unsigned i = 0, e = $4->size(); i != e && GTI != GTE; ++i, ++GTI)
2723 if (isa<StructType>(*GTI)) // Only change struct indices
2724 if (ConstantUInt *CUI = dyn_cast<ConstantUInt>((*$4)[i]))
2725 if (CUI->getType() == Type::UByteTy)
2726 (*$4)[i] = ConstantExpr::getCast(CUI, Type::UIntTy);
2728 if (!GetElementPtrInst::getIndexedType(*$2, *$4, true))
2729 GEN_ERROR("Invalid getelementptr indices for type '" +
2730 (*$2)->getDescription()+ "'!");
2731 Value* tmpVal = getVal(*$2, $3);
2733 $$ = new GetElementPtrInst(tmpVal, *$4);
2741 void llvm::GenerateError(const std::string &message, int LineNo) {
2742 if (LineNo == -1) LineNo = llvmAsmlineno;
2743 // TODO: column number in exception
2745 TheParseError->setError(CurFilename, message, LineNo);
2749 int yyerror(const char *ErrorMsg) {
2751 = std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
2752 + ":" + utostr((unsigned) llvmAsmlineno) + ": ";
2753 std::string errMsg = std::string(ErrorMsg) + "\n" + where + " while reading ";
2754 if (yychar == YYEMPTY || yychar == 0)
2755 errMsg += "end-of-file.";
2757 errMsg += "token: '" + std::string(llvmAsmtext, llvmAsmleng) + "'";
2758 GenerateError(errMsg);