1 //===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===//
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 library implements the functionality defined in llvm/Assembly/Writer.h
12 // Note that these routines must be extremely tolerant of various errors in the
13 // LLVM code, because it can be used for debugging transformations.
15 //===----------------------------------------------------------------------===//
17 #include "llvm/Assembly/CachedWriter.h"
18 #include "llvm/Assembly/Writer.h"
19 #include "llvm/Assembly/PrintModulePass.h"
20 #include "llvm/Assembly/AsmAnnotationWriter.h"
21 #include "llvm/Constants.h"
22 #include "llvm/DerivedTypes.h"
23 #include "llvm/Instruction.h"
24 #include "llvm/iMemory.h"
25 #include "llvm/iTerminators.h"
26 #include "llvm/iPHINode.h"
27 #include "llvm/iOther.h"
28 #include "llvm/Module.h"
29 #include "llvm/SymbolTable.h"
30 #include "llvm/Assembly/Writer.h"
31 #include "llvm/Support/CFG.h"
32 #include "Support/StringExtras.h"
33 #include "Support/STLExtras.h"
39 /// This class provides computation of slot numbers for LLVM Assembly writing.
40 /// @brief LLVM Assembly Writing Slot Computation.
47 /// @brief A mapping of Values to slot numbers
48 typedef std::map<const Value*, unsigned> ValueMap;
49 typedef std::map<const Type*, unsigned> TypeMap;
51 /// @brief A plane with next slot number and ValueMap
53 unsigned next_slot; ///< The next slot number to use
54 ValueMap map; ///< The map of Value* -> unsigned
55 ValuePlane() { next_slot = 0; } ///< Make sure we start at 0
61 TypePlane() { next_slot = 0; }
62 void clear() { map.clear(); next_slot = 0; }
65 /// @brief The map of planes by Type
66 typedef std::map<const Type*, ValuePlane> TypedPlanes;
69 /// @name Constructors
72 /// @brief Construct from a module
73 SlotMachine(const Module *M );
75 /// @brief Construct from a function, starting out in incorp state.
76 SlotMachine(const Function *F );
82 /// Return the slot number of the specified value in it's type
83 /// plane. Its an error to ask for something not in the SlotMachine.
84 /// Its an error to ask for a Type*
85 int getSlot(const Value *V);
86 int getSlot(const Type*Ty);
88 /// Determine if a Value has a slot or not
89 bool hasSlot(const Value* V);
90 bool hasSlot(const Type* Ty);
96 /// If you'd like to deal with a function instead of just a module, use
97 /// this method to get its data into the SlotMachine.
98 void incorporateFunction(const Function *F) { TheFunction = F; }
100 /// After calling incorporateFunction, use this method to remove the
101 /// most recently incorporated function from the SlotMachine. This
102 /// will reset the state of the machine back to just the module contents.
103 void purgeFunction();
106 /// @name Implementation Details
109 /// This function does the actual initialization.
110 inline void initialize();
112 /// Values can be crammed into here at will. If they haven't
113 /// been inserted already, they get inserted, otherwise they are ignored.
114 /// Either way, the slot number for the Value* is returned.
115 unsigned createSlot(const Value *V);
116 unsigned createSlot(const Type* Ty);
118 /// Insert a value into the value table. Return the slot number
119 /// that it now occupies. BadThings(TM) will happen if you insert a
120 /// Value that's already been inserted.
121 unsigned insertValue( const Value *V );
122 unsigned insertValue( const Type* Ty);
124 /// Add all of the module level global variables (and their initializers)
125 /// and function declarations, but not the contents of those functions.
126 void processModule();
128 /// Add all of the functions arguments, basic blocks, and instructions
129 void processFunction();
131 SlotMachine(const SlotMachine &); // DO NOT IMPLEMENT
132 void operator=(const SlotMachine &); // DO NOT IMPLEMENT
139 /// @brief The module for which we are holding slot numbers
140 const Module* TheModule;
142 /// @brief The function for which we are holding slot numbers
143 const Function* TheFunction;
145 /// @brief The TypePlanes map for the module level data
149 /// @brief The TypePlanes map for the function level data
157 } // end namespace llvm
159 static RegisterPass<PrintModulePass>
160 X("printm", "Print module to stderr",PassInfo::Analysis|PassInfo::Optimization);
161 static RegisterPass<PrintFunctionPass>
162 Y("print","Print function to stderr",PassInfo::Analysis|PassInfo::Optimization);
164 static void WriteAsOperandInternal(std::ostream &Out, const Value *V,
166 std::map<const Type *, std::string> &TypeTable,
167 SlotMachine *Machine);
169 static void WriteAsOperandInternal(std::ostream &Out, const Type *T,
171 std::map<const Type *, std::string> &TypeTable,
172 SlotMachine *Machine);
174 static const Module *getModuleFromVal(const Value *V) {
175 if (const Argument *MA = dyn_cast<Argument>(V))
176 return MA->getParent() ? MA->getParent()->getParent() : 0;
177 else if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
178 return BB->getParent() ? BB->getParent()->getParent() : 0;
179 else if (const Instruction *I = dyn_cast<Instruction>(V)) {
180 const Function *M = I->getParent() ? I->getParent()->getParent() : 0;
181 return M ? M->getParent() : 0;
182 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(V))
183 return GV->getParent();
187 static SlotMachine *createSlotMachine(const Value *V) {
188 if (const Argument *FA = dyn_cast<Argument>(V)) {
189 return new SlotMachine(FA->getParent());
190 } else if (const Instruction *I = dyn_cast<Instruction>(V)) {
191 return new SlotMachine(I->getParent()->getParent());
192 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(V)) {
193 return new SlotMachine(BB->getParent());
194 } else if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)){
195 return new SlotMachine(GV->getParent());
196 } else if (const Function *Func = dyn_cast<Function>(V)) {
197 return new SlotMachine(Func);
202 // getLLVMName - Turn the specified string into an 'LLVM name', which is either
203 // prefixed with % (if the string only contains simple characters) or is
204 // surrounded with ""'s (if it has special chars in it).
205 static std::string getLLVMName(const std::string &Name) {
206 assert(!Name.empty() && "Cannot get empty name!");
208 // First character cannot start with a number...
209 if (Name[0] >= '0' && Name[0] <= '9')
210 return "\"" + Name + "\"";
212 // Scan to see if we have any characters that are not on the "white list"
213 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
215 assert(C != '"' && "Illegal character in LLVM value name!");
216 if ((C < 'a' || C > 'z') && (C < 'A' || C > 'Z') && (C < '0' || C > '9') &&
217 C != '-' && C != '.' && C != '_')
218 return "\"" + Name + "\"";
221 // If we get here, then the identifier is legal to use as a "VarID".
226 /// fillTypeNameTable - If the module has a symbol table, take all global types
227 /// and stuff their names into the TypeNames map.
229 static void fillTypeNameTable(const Module *M,
230 std::map<const Type *, std::string> &TypeNames) {
232 const SymbolTable &ST = M->getSymbolTable();
233 SymbolTable::type_const_iterator TI = ST.type_begin();
234 for (; TI != ST.type_end(); ++TI ) {
235 // As a heuristic, don't insert pointer to primitive types, because
236 // they are used too often to have a single useful name.
238 const Type *Ty = cast<Type>(TI->second);
239 if (!isa<PointerType>(Ty) ||
240 !cast<PointerType>(Ty)->getElementType()->isPrimitiveType() ||
241 isa<OpaqueType>(cast<PointerType>(Ty)->getElementType()))
242 TypeNames.insert(std::make_pair(Ty, getLLVMName(TI->first)));
248 static void calcTypeName(const Type *Ty,
249 std::vector<const Type *> &TypeStack,
250 std::map<const Type *, std::string> &TypeNames,
251 std::string & Result){
252 if (Ty->isPrimitiveType() && !isa<OpaqueType>(Ty)) {
253 Result += Ty->getDescription(); // Base case
257 // Check to see if the type is named.
258 std::map<const Type *, std::string>::iterator I = TypeNames.find(Ty);
259 if (I != TypeNames.end()) {
264 if (isa<OpaqueType>(Ty)) {
269 // Check to see if the Type is already on the stack...
270 unsigned Slot = 0, CurSize = TypeStack.size();
271 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
273 // This is another base case for the recursion. In this case, we know
274 // that we have looped back to a type that we have previously visited.
275 // Generate the appropriate upreference to handle this.
276 if (Slot < CurSize) {
277 Result += "\\" + utostr(CurSize-Slot); // Here's the upreference
281 TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
283 switch (Ty->getTypeID()) {
284 case Type::FunctionTyID: {
285 const FunctionType *FTy = cast<FunctionType>(Ty);
286 calcTypeName(FTy->getReturnType(), TypeStack, TypeNames, Result);
288 for (FunctionType::param_iterator I = FTy->param_begin(),
289 E = FTy->param_end(); I != E; ++I) {
290 if (I != FTy->param_begin())
292 calcTypeName(*I, TypeStack, TypeNames, Result);
294 if (FTy->isVarArg()) {
295 if (FTy->getNumParams()) Result += ", ";
301 case Type::StructTyID: {
302 const StructType *STy = cast<StructType>(Ty);
304 for (StructType::element_iterator I = STy->element_begin(),
305 E = STy->element_end(); I != E; ++I) {
306 if (I != STy->element_begin())
308 calcTypeName(*I, TypeStack, TypeNames, Result);
313 case Type::PointerTyID:
314 calcTypeName(cast<PointerType>(Ty)->getElementType(),
315 TypeStack, TypeNames, Result);
318 case Type::ArrayTyID: {
319 const ArrayType *ATy = cast<ArrayType>(Ty);
320 Result += "[" + utostr(ATy->getNumElements()) + " x ";
321 calcTypeName(ATy->getElementType(), TypeStack, TypeNames, Result);
325 case Type::OpaqueTyID:
329 Result += "<unrecognized-type>";
332 TypeStack.pop_back(); // Remove self from stack...
337 /// printTypeInt - The internal guts of printing out a type that has a
338 /// potentially named portion.
340 static std::ostream &printTypeInt(std::ostream &Out, const Type *Ty,
341 std::map<const Type *, std::string> &TypeNames) {
342 // Primitive types always print out their description, regardless of whether
343 // they have been named or not.
345 if (Ty->isPrimitiveType() && !isa<OpaqueType>(Ty))
346 return Out << Ty->getDescription();
348 // Check to see if the type is named.
349 std::map<const Type *, std::string>::iterator I = TypeNames.find(Ty);
350 if (I != TypeNames.end()) return Out << I->second;
352 // Otherwise we have a type that has not been named but is a derived type.
353 // Carefully recurse the type hierarchy to print out any contained symbolic
356 std::vector<const Type *> TypeStack;
357 std::string TypeName;
358 calcTypeName(Ty, TypeStack, TypeNames, TypeName);
359 TypeNames.insert(std::make_pair(Ty, TypeName));//Cache type name for later use
360 return (Out << TypeName);
364 /// WriteTypeSymbolic - This attempts to write the specified type as a symbolic
365 /// type, iff there is an entry in the modules symbol table for the specified
366 /// type or one of it's component types. This is slower than a simple x << Type
368 std::ostream &llvm::WriteTypeSymbolic(std::ostream &Out, const Type *Ty,
372 // If they want us to print out a type, attempt to make it symbolic if there
373 // is a symbol table in the module...
375 std::map<const Type *, std::string> TypeNames;
376 fillTypeNameTable(M, TypeNames);
378 return printTypeInt(Out, Ty, TypeNames);
380 return Out << Ty->getDescription();
384 static void WriteConstantInt(std::ostream &Out, const Constant *CV,
386 std::map<const Type *, std::string> &TypeTable,
387 SlotMachine *Machine) {
388 if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
389 Out << (CB == ConstantBool::True ? "true" : "false");
390 } else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV)) {
391 Out << CI->getValue();
392 } else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV)) {
393 Out << CI->getValue();
394 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
395 // We would like to output the FP constant value in exponential notation,
396 // but we cannot do this if doing so will lose precision. Check here to
397 // make sure that we only output it in exponential format if we can parse
398 // the value back and get the same value.
400 std::string StrVal = ftostr(CFP->getValue());
402 // Check to make sure that the stringized number is not some string like
403 // "Inf" or NaN, that atof will accept, but the lexer will not. Check that
404 // the string matches the "[-+]?[0-9]" regex.
406 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
407 ((StrVal[0] == '-' || StrVal[0] == '+') &&
408 (StrVal[1] >= '0' && StrVal[1] <= '9')))
409 // Reparse stringized version!
410 if (atof(StrVal.c_str()) == CFP->getValue()) {
411 Out << StrVal; return;
414 // Otherwise we could not reparse it to exactly the same value, so we must
415 // output the string in hexadecimal format!
417 // Behave nicely in the face of C TBAA rules... see:
418 // http://www.nullstone.com/htmls/category/aliastyp.htm
420 double Val = CFP->getValue();
421 char *Ptr = (char*)&Val;
422 assert(sizeof(double) == sizeof(uint64_t) && sizeof(double) == 8 &&
423 "assuming that double is 64 bits!");
424 Out << "0x" << utohexstr(*(uint64_t*)Ptr);
426 } else if (isa<ConstantAggregateZero>(CV)) {
427 Out << "zeroinitializer";
428 } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
429 // As a special case, print the array as a string if it is an array of
430 // ubytes or an array of sbytes with positive values.
432 const Type *ETy = CA->getType()->getElementType();
433 bool isString = (ETy == Type::SByteTy || ETy == Type::UByteTy);
435 if (ETy == Type::SByteTy)
436 for (unsigned i = 0; i < CA->getNumOperands(); ++i)
437 if (cast<ConstantSInt>(CA->getOperand(i))->getValue() < 0) {
444 for (unsigned i = 0; i < CA->getNumOperands(); ++i) {
446 (unsigned char)cast<ConstantInt>(CA->getOperand(i))->getRawValue();
448 if (isprint(C) && C != '"' && C != '\\') {
452 << (char) ((C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
453 << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
458 } else { // Cannot output in string format...
460 if (CA->getNumOperands()) {
462 printTypeInt(Out, ETy, TypeTable);
463 WriteAsOperandInternal(Out, CA->getOperand(0),
464 PrintName, TypeTable, Machine);
465 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
467 printTypeInt(Out, ETy, TypeTable);
468 WriteAsOperandInternal(Out, CA->getOperand(i), PrintName,
474 } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
476 if (CS->getNumOperands()) {
478 printTypeInt(Out, CS->getOperand(0)->getType(), TypeTable);
480 WriteAsOperandInternal(Out, CS->getOperand(0),
481 PrintName, TypeTable, Machine);
483 for (unsigned i = 1; i < CS->getNumOperands(); i++) {
485 printTypeInt(Out, CS->getOperand(i)->getType(), TypeTable);
487 WriteAsOperandInternal(Out, CS->getOperand(i),
488 PrintName, TypeTable, Machine);
493 } else if (isa<ConstantPointerNull>(CV)) {
496 } else if (const ConstantPointerRef *PR = dyn_cast<ConstantPointerRef>(CV)) {
497 WriteAsOperandInternal(Out, PR->getValue(), true, TypeTable, Machine);
499 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
500 Out << CE->getOpcodeName() << " (";
502 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
503 printTypeInt(Out, (*OI)->getType(), TypeTable);
504 WriteAsOperandInternal(Out, *OI, PrintName, TypeTable, Machine);
505 if (OI+1 != CE->op_end())
509 if (CE->getOpcode() == Instruction::Cast) {
511 printTypeInt(Out, CE->getType(), TypeTable);
516 Out << "<placeholder or erroneous Constant>";
521 /// WriteAsOperand - Write the name of the specified value out to the specified
522 /// ostream. This can be useful when you just want to print int %reg126, not
523 /// the whole instruction that generated it.
525 static void WriteAsOperandInternal(std::ostream &Out, const Value *V,
527 std::map<const Type*, std::string> &TypeTable,
528 SlotMachine *Machine) {
530 if (PrintName && V->hasName()) {
531 Out << getLLVMName(V->getName());
533 if (const Constant *CV = dyn_cast<Constant>(V)) {
534 WriteConstantInt(Out, CV, PrintName, TypeTable, Machine);
538 Slot = Machine->getSlot(V);
540 Machine = createSlotMachine(V);
542 Slot = Machine->getSlot(V);
555 /// WriteAsOperand - Write the name of the specified value out to the specified
556 /// ostream. This can be useful when you just want to print int %reg126, not
557 /// the whole instruction that generated it.
559 std::ostream &llvm::WriteAsOperand(std::ostream &Out, const Value *V,
560 bool PrintType, bool PrintName,
561 const Module *Context) {
562 std::map<const Type *, std::string> TypeNames;
563 if (Context == 0) Context = getModuleFromVal(V);
566 fillTypeNameTable(Context, TypeNames);
569 printTypeInt(Out, V->getType(), TypeNames);
571 WriteAsOperandInternal(Out, V, PrintName, TypeNames, 0);
575 /// WriteAsOperandInternal - Write the name of the specified value out to
576 /// the specified ostream. This can be useful when you just want to print
577 /// int %reg126, not the whole instruction that generated it.
579 static void WriteAsOperandInternal(std::ostream &Out, const Type *T,
581 std::map<const Type*, std::string> &TypeTable,
582 SlotMachine *Machine) {
586 Slot = Machine->getSlot(T);
592 Out << T->getDescription();
596 /// WriteAsOperand - Write the name of the specified value out to the specified
597 /// ostream. This can be useful when you just want to print int %reg126, not
598 /// the whole instruction that generated it.
600 std::ostream &llvm::WriteAsOperand(std::ostream &Out, const Type *Ty,
601 bool PrintType, bool PrintName,
602 const Module *Context) {
603 std::map<const Type *, std::string> TypeNames;
604 assert(Context != 0 && "Can't write types as operand without module context");
606 fillTypeNameTable(Context, TypeNames);
609 // printTypeInt(Out, V->getType(), TypeNames);
611 printTypeInt(Out, Ty, TypeNames);
613 WriteAsOperandInternal(Out, Ty, PrintName, TypeNames, 0);
619 class AssemblyWriter {
621 SlotMachine &Machine;
622 const Module *TheModule;
623 std::map<const Type *, std::string> TypeNames;
624 AssemblyAnnotationWriter *AnnotationWriter;
626 inline AssemblyWriter(std::ostream &o, SlotMachine &Mac, const Module *M,
627 AssemblyAnnotationWriter *AAW)
628 : Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW) {
630 // If the module has a symbol table, take all global types and stuff their
631 // names into the TypeNames map.
633 fillTypeNameTable(M, TypeNames);
636 inline void write(const Module *M) { printModule(M); }
637 inline void write(const GlobalVariable *G) { printGlobal(G); }
638 inline void write(const Function *F) { printFunction(F); }
639 inline void write(const BasicBlock *BB) { printBasicBlock(BB); }
640 inline void write(const Instruction *I) { printInstruction(*I); }
641 inline void write(const Constant *CPV) { printConstant(CPV); }
642 inline void write(const Type *Ty) { printType(Ty); }
644 void writeOperand(const Value *Op, bool PrintType, bool PrintName = true);
646 const Module* getModule() { return TheModule; }
649 void printModule(const Module *M);
650 void printSymbolTable(const SymbolTable &ST);
651 void printConstant(const Constant *CPV);
652 void printGlobal(const GlobalVariable *GV);
653 void printFunction(const Function *F);
654 void printArgument(const Argument *FA);
655 void printBasicBlock(const BasicBlock *BB);
656 void printInstruction(const Instruction &I);
658 // printType - Go to extreme measures to attempt to print out a short,
659 // symbolic version of a type name.
661 std::ostream &printType(const Type *Ty) {
662 return printTypeInt(Out, Ty, TypeNames);
665 // printTypeAtLeastOneLevel - Print out one level of the possibly complex type
666 // without considering any symbolic types that we may have equal to it.
668 std::ostream &printTypeAtLeastOneLevel(const Type *Ty);
670 // printInfoComment - Print a little comment after the instruction indicating
671 // which slot it occupies.
672 void printInfoComment(const Value &V);
674 } // end of llvm namespace
676 /// printTypeAtLeastOneLevel - Print out one level of the possibly complex type
677 /// without considering any symbolic types that we may have equal to it.
679 std::ostream &AssemblyWriter::printTypeAtLeastOneLevel(const Type *Ty) {
680 if (const FunctionType *FTy = dyn_cast<FunctionType>(Ty)) {
681 printType(FTy->getReturnType()) << " (";
682 for (FunctionType::param_iterator I = FTy->param_begin(),
683 E = FTy->param_end(); I != E; ++I) {
684 if (I != FTy->param_begin())
688 if (FTy->isVarArg()) {
689 if (FTy->getNumParams()) Out << ", ";
693 } else if (const StructType *STy = dyn_cast<StructType>(Ty)) {
695 for (StructType::element_iterator I = STy->element_begin(),
696 E = STy->element_end(); I != E; ++I) {
697 if (I != STy->element_begin())
702 } else if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
703 printType(PTy->getElementType()) << '*';
704 } else if (const ArrayType *ATy = dyn_cast<ArrayType>(Ty)) {
705 Out << '[' << ATy->getNumElements() << " x ";
706 printType(ATy->getElementType()) << ']';
707 } else if (const OpaqueType *OTy = dyn_cast<OpaqueType>(Ty)) {
710 if (!Ty->isPrimitiveType())
711 Out << "<unknown derived type>";
718 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType,
720 if (PrintType) { Out << ' '; printType(Operand->getType()); }
721 WriteAsOperandInternal(Out, Operand, PrintName, TypeNames, &Machine);
725 void AssemblyWriter::printModule(const Module *M) {
726 switch (M->getEndianness()) {
727 case Module::LittleEndian: Out << "target endian = little\n"; break;
728 case Module::BigEndian: Out << "target endian = big\n"; break;
729 case Module::AnyEndianness: break;
731 switch (M->getPointerSize()) {
732 case Module::Pointer32: Out << "target pointersize = 32\n"; break;
733 case Module::Pointer64: Out << "target pointersize = 64\n"; break;
734 case Module::AnyPointerSize: break;
737 // Loop over the symbol table, emitting all named constants...
738 printSymbolTable(M->getSymbolTable());
740 for (Module::const_giterator I = M->gbegin(), E = M->gend(); I != E; ++I)
743 Out << "\nimplementation ; Functions:\n";
745 // Output all of the functions...
746 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
750 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
751 if (GV->hasName()) Out << getLLVMName(GV->getName()) << " = ";
753 if (!GV->hasInitializer())
756 switch (GV->getLinkage()) {
757 case GlobalValue::InternalLinkage: Out << "internal "; break;
758 case GlobalValue::LinkOnceLinkage: Out << "linkonce "; break;
759 case GlobalValue::WeakLinkage: Out << "weak "; break;
760 case GlobalValue::AppendingLinkage: Out << "appending "; break;
761 case GlobalValue::ExternalLinkage: break;
764 Out << (GV->isConstant() ? "constant " : "global ");
765 printType(GV->getType()->getElementType());
767 if (GV->hasInitializer())
768 writeOperand(GV->getInitializer(), false, false);
770 printInfoComment(*GV);
775 // printSymbolTable - Run through symbol table looking for constants
776 // and types. Emit their declarations.
777 void AssemblyWriter::printSymbolTable(const SymbolTable &ST) {
780 for (SymbolTable::type_const_iterator TI = ST.type_begin();
781 TI != ST.type_end(); ++TI ) {
782 Out << "\t" << getLLVMName(TI->first) << " = type ";
784 // Make sure we print out at least one level of the type structure, so
785 // that we do not get %FILE = type %FILE
787 printTypeAtLeastOneLevel(TI->second) << "\n";
790 // Print the constants, in type plane order.
791 for (SymbolTable::plane_const_iterator PI = ST.plane_begin();
792 PI != ST.plane_end(); ++PI ) {
793 SymbolTable::value_const_iterator VI = ST.value_begin(PI->first);
794 SymbolTable::value_const_iterator VE = ST.value_end(PI->first);
796 for (; VI != VE; ++VI) {
797 const Value *V = VI->second;
798 if (const Constant *CPV = dyn_cast<Constant>(V)) {
806 /// printConstant - Print out a constant pool entry...
808 void AssemblyWriter::printConstant(const Constant *CPV) {
809 // Don't print out unnamed constants, they will be inlined
810 if (!CPV->hasName()) return;
813 Out << "\t" << getLLVMName(CPV->getName()) << " =";
815 // Write the value out now...
816 writeOperand(CPV, true, false);
818 printInfoComment(*CPV);
822 /// printFunction - Print all aspects of a function.
824 void AssemblyWriter::printFunction(const Function *F) {
825 // Print out the return type and name...
828 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out);
833 switch (F->getLinkage()) {
834 case GlobalValue::InternalLinkage: Out << "internal "; break;
835 case GlobalValue::LinkOnceLinkage: Out << "linkonce "; break;
836 case GlobalValue::WeakLinkage: Out << "weak "; break;
837 case GlobalValue::AppendingLinkage: Out << "appending "; break;
838 case GlobalValue::ExternalLinkage: break;
841 printType(F->getReturnType()) << ' ';
842 if (!F->getName().empty())
843 Out << getLLVMName(F->getName());
847 Machine.incorporateFunction(F);
849 // Loop over the arguments, printing them...
850 const FunctionType *FT = F->getFunctionType();
852 for(Function::const_aiterator I = F->abegin(), E = F->aend(); I != E; ++I)
855 // Finish printing arguments...
856 if (FT->isVarArg()) {
857 if (FT->getNumParams()) Out << ", ";
858 Out << "..."; // Output varargs portion of signature!
862 if (F->isExternal()) {
867 // Output all of its basic blocks... for the function
868 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
874 Machine.purgeFunction();
877 /// printArgument - This member is called for every argument that is passed into
878 /// the function. Simply print it out
880 void AssemblyWriter::printArgument(const Argument *Arg) {
881 // Insert commas as we go... the first arg doesn't get a comma
882 if (Arg != &Arg->getParent()->afront()) Out << ", ";
885 printType(Arg->getType());
887 // Output name, if available...
889 Out << ' ' << getLLVMName(Arg->getName());
892 /// printBasicBlock - This member is called for each basic block in a method.
894 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
895 if (BB->hasName()) { // Print out the label if it exists...
896 Out << "\n" << BB->getName() << ':';
897 } else if (!BB->use_empty()) { // Don't print block # of no uses...
898 Out << "\n; <label>:";
899 int Slot = Machine.getSlot(BB);
906 if (BB->getParent() == 0)
907 Out << "\t\t; Error: Block without parent!";
909 if (BB != &BB->getParent()->front()) { // Not the entry block?
910 // Output predecessors for the block...
912 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
915 Out << " No predecessors!";
918 writeOperand(*PI, false, true);
919 for (++PI; PI != PE; ++PI) {
921 writeOperand(*PI, false, true);
929 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out);
931 // Output all of the instructions in the basic block...
932 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
933 printInstruction(*I);
935 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out);
939 /// printInfoComment - Print a little comment after the instruction indicating
940 /// which slot it occupies.
942 void AssemblyWriter::printInfoComment(const Value &V) {
943 if (V.getType() != Type::VoidTy) {
945 printType(V.getType()) << '>';
948 int SlotNum = Machine.getSlot(&V);
952 Out << ':' << SlotNum; // Print out the def slot taken.
954 Out << " [#uses=" << V.use_size() << ']'; // Output # uses
958 /// printInstruction - This member is called for each Instruction in a function..
960 void AssemblyWriter::printInstruction(const Instruction &I) {
961 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);
965 // Print out name if it exists...
967 Out << getLLVMName(I.getName()) << " = ";
969 // If this is a volatile load or store, print out the volatile marker
970 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) ||
971 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile()))
974 // Print out the opcode...
975 Out << I.getOpcodeName();
977 // Print out the type of the operands...
978 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
980 // Special case conditional branches to swizzle the condition out to the front
981 if (isa<BranchInst>(I) && I.getNumOperands() > 1) {
982 writeOperand(I.getOperand(2), true);
984 writeOperand(Operand, true);
986 writeOperand(I.getOperand(1), true);
988 } else if (isa<SwitchInst>(I)) {
989 // Special case switch statement to get formatting nice and correct...
990 writeOperand(Operand , true); Out << ',';
991 writeOperand(I.getOperand(1), true); Out << " [";
993 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
995 writeOperand(I.getOperand(op ), true); Out << ',';
996 writeOperand(I.getOperand(op+1), true);
999 } else if (isa<PHINode>(I)) {
1001 printType(I.getType());
1004 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
1005 if (op) Out << ", ";
1007 writeOperand(I.getOperand(op ), false); Out << ',';
1008 writeOperand(I.getOperand(op+1), false); Out << " ]";
1010 } else if (isa<ReturnInst>(I) && !Operand) {
1012 } else if (isa<CallInst>(I)) {
1013 const PointerType *PTy = cast<PointerType>(Operand->getType());
1014 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1015 const Type *RetTy = FTy->getReturnType();
1017 // If possible, print out the short form of the call instruction. We can
1018 // only do this if the first argument is a pointer to a nonvararg function,
1019 // and if the return type is not a pointer to a function.
1021 if (!FTy->isVarArg() &&
1022 (!isa<PointerType>(RetTy) ||
1023 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1024 Out << ' '; printType(RetTy);
1025 writeOperand(Operand, false);
1027 writeOperand(Operand, true);
1030 if (I.getNumOperands() > 1) writeOperand(I.getOperand(1), true);
1031 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; ++op) {
1033 writeOperand(I.getOperand(op), true);
1037 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
1038 const PointerType *PTy = cast<PointerType>(Operand->getType());
1039 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1040 const Type *RetTy = FTy->getReturnType();
1042 // If possible, print out the short form of the invoke instruction. We can
1043 // only do this if the first argument is a pointer to a nonvararg function,
1044 // and if the return type is not a pointer to a function.
1046 if (!FTy->isVarArg() &&
1047 (!isa<PointerType>(RetTy) ||
1048 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1049 Out << ' '; printType(RetTy);
1050 writeOperand(Operand, false);
1052 writeOperand(Operand, true);
1056 if (I.getNumOperands() > 3) writeOperand(I.getOperand(3), true);
1057 for (unsigned op = 4, Eop = I.getNumOperands(); op < Eop; ++op) {
1059 writeOperand(I.getOperand(op), true);
1062 Out << " )\n\t\t\tto";
1063 writeOperand(II->getNormalDest(), true);
1065 writeOperand(II->getUnwindDest(), true);
1067 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
1069 printType(AI->getType()->getElementType());
1070 if (AI->isArrayAllocation()) {
1072 writeOperand(AI->getArraySize(), true);
1074 } else if (isa<CastInst>(I)) {
1075 if (Operand) writeOperand(Operand, true); // Work with broken code
1077 printType(I.getType());
1078 } else if (isa<VAArgInst>(I)) {
1079 if (Operand) writeOperand(Operand, true); // Work with broken code
1081 printType(I.getType());
1082 } else if (const VANextInst *VAN = dyn_cast<VANextInst>(&I)) {
1083 if (Operand) writeOperand(Operand, true); // Work with broken code
1085 printType(VAN->getArgType());
1086 } else if (Operand) { // Print the normal way...
1088 // PrintAllTypes - Instructions who have operands of all the same type
1089 // omit the type from all but the first operand. If the instruction has
1090 // different type operands (for example br), then they are all printed.
1091 bool PrintAllTypes = false;
1092 const Type *TheType = Operand->getType();
1094 // Shift Left & Right print both types even for Ubyte LHS, and select prints
1095 // types even if all operands are bools.
1096 if (isa<ShiftInst>(I) || isa<SelectInst>(I)) {
1097 PrintAllTypes = true;
1099 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
1100 Operand = I.getOperand(i);
1101 if (Operand->getType() != TheType) {
1102 PrintAllTypes = true; // We have differing types! Print them all!
1108 if (!PrintAllTypes) {
1113 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
1115 writeOperand(I.getOperand(i), PrintAllTypes);
1119 printInfoComment(I);
1124 //===----------------------------------------------------------------------===//
1125 // External Interface declarations
1126 //===----------------------------------------------------------------------===//
1128 void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1129 SlotMachine SlotTable(this);
1130 AssemblyWriter W(o, SlotTable, this, AAW);
1134 void GlobalVariable::print(std::ostream &o) const {
1135 SlotMachine SlotTable(getParent());
1136 AssemblyWriter W(o, SlotTable, getParent(), 0);
1140 void Function::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1141 SlotMachine SlotTable(getParent());
1142 AssemblyWriter W(o, SlotTable, getParent(), AAW);
1147 void BasicBlock::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1148 SlotMachine SlotTable(getParent());
1149 AssemblyWriter W(o, SlotTable,
1150 getParent() ? getParent()->getParent() : 0, AAW);
1154 void Instruction::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1155 const Function *F = getParent() ? getParent()->getParent() : 0;
1156 SlotMachine SlotTable(F);
1157 AssemblyWriter W(o, SlotTable, F ? F->getParent() : 0, AAW);
1162 void Constant::print(std::ostream &o) const {
1163 if (this == 0) { o << "<null> constant value\n"; return; }
1165 // Handle CPR's special, because they have context information...
1166 if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(this)) {
1167 CPR->getValue()->print(o); // Print as a global value, with context info.
1171 o << ' ' << getType()->getDescription() << ' ';
1173 std::map<const Type *, std::string> TypeTable;
1174 WriteConstantInt(o, this, false, TypeTable, 0);
1177 void Type::print(std::ostream &o) const {
1181 o << getDescription();
1184 void Argument::print(std::ostream &o) const {
1185 WriteAsOperand(o, this, true, true,
1186 getParent() ? getParent()->getParent() : 0);
1189 // Value::dump - allow easy printing of Values from the debugger.
1190 // Located here because so much of the needed functionality is here.
1191 void Value::dump() const { print(std::cerr); }
1193 // Type::dump - allow easy printing of Values from the debugger.
1194 // Located here because so much of the needed functionality is here.
1195 void Type::dump() const { print(std::cerr); }
1197 //===----------------------------------------------------------------------===//
1198 // CachedWriter Class Implementation
1199 //===----------------------------------------------------------------------===//
1201 void CachedWriter::setModule(const Module *M) {
1202 delete SC; delete AW;
1204 SC = new SlotMachine(M );
1205 AW = new AssemblyWriter(Out, *SC, M, 0);
1211 CachedWriter::~CachedWriter() {
1216 CachedWriter &CachedWriter::operator<<(const Value &V) {
1217 assert(AW && SC && "CachedWriter does not have a current module!");
1218 if (const Instruction *I = dyn_cast<Instruction>(&V))
1220 else if (const BasicBlock *BB = dyn_cast<BasicBlock>(&V))
1222 else if (const Function *F = dyn_cast<Function>(&V))
1224 else if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(&V))
1227 AW->writeOperand(&V, true, true);
1231 CachedWriter& CachedWriter::operator<<(const Type &Ty) {
1232 if (SymbolicTypes) {
1233 const Module *M = AW->getModule();
1234 if (M) WriteTypeSymbolic(Out, &Ty, M);
1241 //===----------------------------------------------------------------------===//
1242 //===-- SlotMachine Implementation
1243 //===----------------------------------------------------------------------===//
1246 #define SC_DEBUG(X) std::cerr << X
1251 // Module level constructor. Causes the contents of the Module (sans functions)
1252 // to be added to the slot table.
1253 SlotMachine::SlotMachine(const Module *M)
1254 : TheModule(M) ///< Saved for lazy initialization.
1263 // Function level constructor. Causes the contents of the Module and the one
1264 // function provided to be added to the slot table.
1265 SlotMachine::SlotMachine(const Function *F )
1266 : TheModule( F ? F->getParent() : 0 ) ///< Saved for lazy initialization
1267 , TheFunction(F) ///< Saved for lazy initialization
1275 inline void SlotMachine::initialize(void) {
1278 TheModule = 0; ///< Prevent re-processing next time we're called.
1280 if ( TheFunction ) {
1285 // Iterate through all the global variables, functions, and global
1286 // variable initializers and create slots for them.
1287 void SlotMachine::processModule() {
1288 SC_DEBUG("begin processModule!\n");
1290 // Add all of the global variables to the value table...
1291 for (Module::const_giterator I = TheModule->gbegin(), E = TheModule->gend();
1295 // Add all the functions to the table
1296 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1300 SC_DEBUG("end processModule!\n");
1304 // Process the arguments, basic blocks, and instructions of a function.
1305 void SlotMachine::processFunction() {
1306 SC_DEBUG("begin processFunction!\n");
1308 // Add all the function arguments
1309 for(Function::const_aiterator AI = TheFunction->abegin(),
1310 AE = TheFunction->aend(); AI != AE; ++AI)
1313 SC_DEBUG("Inserting Instructions:\n");
1315 // Add all of the basic blocks and instructions
1316 for (Function::const_iterator BB = TheFunction->begin(),
1317 E = TheFunction->end(); BB != E; ++BB) {
1319 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E; ++I) {
1324 SC_DEBUG("end processFunction!\n");
1327 // Clean up after incorporating a function. This is the only way
1328 // to get out of the function incorporation state that affects the
1329 // getSlot/createSlot lock. Function incorporation state is indicated
1330 // by TheFunction != 0.
1331 void SlotMachine::purgeFunction() {
1332 SC_DEBUG("begin purgeFunction!\n");
1333 fMap.clear(); // Simply discard the function level map
1336 SC_DEBUG("end purgeFunction!\n");
1339 /// Get the slot number for a value. This function will assert if you
1340 /// ask for a Value that hasn't previously been inserted with createSlot.
1341 /// Types are forbidden because Type does not inherit from Value (any more).
1342 int SlotMachine::getSlot(const Value *V) {
1343 assert( V && "Can't get slot for null Value" );
1344 assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
1345 "Can't insert a non-GlobalValue Constant into SlotMachine");
1347 // Check for uninitialized state and do lazy initialization
1350 // Do not number CPR's at all. They are an abomination
1351 if ( const ConstantPointerRef* CPR = dyn_cast<ConstantPointerRef>(V) )
1352 V = CPR->getValue() ;
1354 // Get the type of the value
1355 const Type* VTy = V->getType();
1357 // Find the type plane in the module map
1358 TypedPlanes::const_iterator MI = mMap.find(VTy);
1360 if ( TheFunction ) {
1361 // Lookup the type in the function map too
1362 TypedPlanes::const_iterator FI = fMap.find(VTy);
1363 // If there is a corresponding type plane in the function map
1364 if ( FI != fMap.end() ) {
1365 // Lookup the Value in the function map
1366 ValueMap::const_iterator FVI = FI->second.map.find(V);
1367 // If the value doesn't exist in the function map
1368 if ( FVI == FI->second.map.end() ) {
1369 // Look up the value in the module map.
1370 if (MI == mMap.end()) return -1;
1371 ValueMap::const_iterator MVI = MI->second.map.find(V);
1372 // If we didn't find it, it wasn't inserted
1373 if (MVI == MI->second.map.end()) return -1;
1374 assert( MVI != MI->second.map.end() && "Value not found");
1375 // We found it only at the module level
1378 // else the value exists in the function map
1380 // Return the slot number as the module's contribution to
1381 // the type plane plus the index in the function's contribution
1382 // to the type plane.
1383 if (MI != mMap.end())
1384 return MI->second.next_slot + FVI->second;
1391 // N.B. Can get here only if either !TheFunction or the function doesn't
1392 // have a corresponding type plane for the Value
1394 // Make sure the type plane exists
1395 if (MI == mMap.end()) return -1;
1396 // Lookup the value in the module's map
1397 ValueMap::const_iterator MVI = MI->second.map.find(V);
1398 // Make sure we found it.
1399 if (MVI == MI->second.map.end()) return -1;
1404 /// Get the slot number for a value. This function will assert if you
1405 /// ask for a Value that hasn't previously been inserted with createSlot.
1406 /// Types are forbidden because Type does not inherit from Value (any more).
1407 int SlotMachine::getSlot(const Type *Ty) {
1408 assert( Ty && "Can't get slot for null Type" );
1410 // Check for uninitialized state and do lazy initialization
1413 if ( TheFunction ) {
1414 // Lookup the Type in the function map
1415 TypeMap::const_iterator FTI = fTypes.map.find(Ty);
1416 // If the Type doesn't exist in the function map
1417 if ( FTI == fTypes.map.end() ) {
1418 TypeMap::const_iterator MTI = mTypes.map.find(Ty);
1419 // If we didn't find it, it wasn't inserted
1420 if (MTI == mTypes.map.end())
1422 // We found it only at the module level
1425 // else the value exists in the function map
1427 // Return the slot number as the module's contribution to
1428 // the type plane plus the index in the function's contribution
1429 // to the type plane.
1430 return mTypes.next_slot + FTI->second;
1434 // N.B. Can get here only if either !TheFunction
1436 // Lookup the value in the module's map
1437 TypeMap::const_iterator MTI = mTypes.map.find(Ty);
1438 // Make sure we found it.
1439 if (MTI == mTypes.map.end()) return -1;
1444 // Create a new slot, or return the existing slot if it is already
1445 // inserted. Note that the logic here parallels getSlot but instead
1446 // of asserting when the Value* isn't found, it inserts the value.
1447 unsigned SlotMachine::createSlot(const Value *V) {
1448 assert( V && "Can't insert a null Value to SlotMachine");
1449 assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
1450 "Can't insert a non-GlobalValue Constant into SlotMachine");
1452 const Type* VTy = V->getType();
1454 // Just ignore void typed things
1455 if (VTy == Type::VoidTy) return 0; // FIXME: Wrong return value!
1457 // Look up the type plane for the Value's type from the module map
1458 TypedPlanes::const_iterator MI = mMap.find(VTy);
1460 if ( TheFunction ) {
1461 // Get the type plane for the Value's type from the function map
1462 TypedPlanes::const_iterator FI = fMap.find(VTy);
1463 // If there is a corresponding type plane in the function map
1464 if ( FI != fMap.end() ) {
1465 // Lookup the Value in the function map
1466 ValueMap::const_iterator FVI = FI->second.map.find(V);
1467 // If the value doesn't exist in the function map
1468 if ( FVI == FI->second.map.end() ) {
1469 // If there is no corresponding type plane in the module map
1470 if ( MI == mMap.end() )
1471 return insertValue(V);
1472 // Look up the value in the module map
1473 ValueMap::const_iterator MVI = MI->second.map.find(V);
1474 // If we didn't find it, it wasn't inserted
1475 if ( MVI == MI->second.map.end() )
1476 return insertValue(V);
1478 // We found it only at the module level
1481 // else the value exists in the function map
1483 if ( MI == mMap.end() )
1486 // Return the slot number as the module's contribution to
1487 // the type plane plus the index in the function's contribution
1488 // to the type plane.
1489 return MI->second.next_slot + FVI->second;
1492 // else there is not a corresponding type plane in the function map
1494 // If the type plane doesn't exists at the module level
1495 if ( MI == mMap.end() ) {
1496 return insertValue(V);
1497 // else type plane exists at the module level, examine it
1499 // Look up the value in the module's map
1500 ValueMap::const_iterator MVI = MI->second.map.find(V);
1501 // If we didn't find it there either
1502 if ( MVI == MI->second.map.end() )
1503 // Return the slot number as the module's contribution to
1504 // the type plane plus the index of the function map insertion.
1505 return MI->second.next_slot + insertValue(V);
1512 // N.B. Can only get here if !TheFunction
1514 // If the module map's type plane is not for the Value's type
1515 if ( MI != mMap.end() ) {
1516 // Lookup the value in the module's map
1517 ValueMap::const_iterator MVI = MI->second.map.find(V);
1518 if ( MVI != MI->second.map.end() )
1522 return insertValue(V);
1525 // Create a new slot, or return the existing slot if it is already
1526 // inserted. Note that the logic here parallels getSlot but instead
1527 // of asserting when the Value* isn't found, it inserts the value.
1528 unsigned SlotMachine::createSlot(const Type *Ty) {
1529 assert( Ty && "Can't insert a null Type to SlotMachine");
1531 if ( TheFunction ) {
1532 // Lookup the Type in the function map
1533 TypeMap::const_iterator FTI = fTypes.map.find(Ty);
1534 // If the type doesn't exist in the function map
1535 if ( FTI == fTypes.map.end() ) {
1536 // Look up the type in the module map
1537 TypeMap::const_iterator MTI = mTypes.map.find(Ty);
1538 // If we didn't find it, it wasn't inserted
1539 if ( MTI == mTypes.map.end() )
1540 return insertValue(Ty);
1542 // We found it only at the module level
1545 // else the value exists in the function map
1547 // Return the slot number as the module's contribution to
1548 // the type plane plus the index in the function's contribution
1549 // to the type plane.
1550 return mTypes.next_slot + FTI->second;
1554 // N.B. Can only get here if !TheFunction
1556 // Lookup the type in the module's map
1557 TypeMap::const_iterator MTI = mTypes.map.find(Ty);
1558 if ( MTI != mTypes.map.end() )
1561 return insertValue(Ty);
1564 // Low level insert function. Minimal checking is done. This
1565 // function is just for the convenience of createSlot (above).
1566 unsigned SlotMachine::insertValue(const Value *V ) {
1567 assert(V && "Can't insert a null Value into SlotMachine!");
1568 assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
1569 "Can't insert a non-GlobalValue Constant into SlotMachine");
1571 // If this value does not contribute to a plane (is void)
1572 // or if the value already has a name then ignore it.
1573 if (V->getType() == Type::VoidTy || V->hasName() ) {
1574 SC_DEBUG("ignored value " << *V << "\n");
1575 return 0; // FIXME: Wrong return value
1578 const Type *VTy = V->getType();
1579 unsigned DestSlot = 0;
1581 if ( TheFunction ) {
1582 TypedPlanes::iterator I = fMap.find( VTy );
1583 if ( I == fMap.end() )
1584 I = fMap.insert(std::make_pair(VTy,ValuePlane())).first;
1585 DestSlot = I->second.map[V] = I->second.next_slot++;
1587 TypedPlanes::iterator I = mMap.find( VTy );
1588 if ( I == mMap.end() )
1589 I = mMap.insert(std::make_pair(VTy,ValuePlane())).first;
1590 DestSlot = I->second.map[V] = I->second.next_slot++;
1593 SC_DEBUG(" Inserting value [" << VTy << "] = " << V << " slot=" <<
1595 // G = Global, C = Constant, T = Type, F = Function, o = other
1596 SC_DEBUG((isa<GlobalVariable>(V) ? 'G' : (isa<Constant>(V) ? 'C' :
1597 (isa<Function>(V) ? 'F' : 'o'))));
1602 // Low level insert function. Minimal checking is done. This
1603 // function is just for the convenience of createSlot (above).
1604 unsigned SlotMachine::insertValue(const Type *Ty ) {
1605 assert(Ty && "Can't insert a null Type into SlotMachine!");
1607 unsigned DestSlot = 0;
1609 if ( TheFunction ) {
1610 DestSlot = fTypes.map[Ty] = fTypes.next_slot++;
1612 DestSlot = fTypes.map[Ty] = fTypes.next_slot++;
1614 SC_DEBUG(" Inserting type [" << DestSlot << "] = " << Ty << "\n");