1 //===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===//
3 // This library implements the functionality defined in llvm/Assembly/Writer.h
5 // Note that these routines must be extremely tolerant of various errors in the
6 // LLVM code, because of of the primary uses of it is for debugging
9 //===----------------------------------------------------------------------===//
11 #include "llvm/Assembly/CachedWriter.h"
12 #include "llvm/Assembly/Writer.h"
13 #include "llvm/Assembly/PrintModulePass.h"
14 #include "llvm/SlotCalculator.h"
15 #include "llvm/DerivedTypes.h"
16 #include "llvm/Instruction.h"
17 #include "llvm/Module.h"
18 #include "llvm/Constants.h"
19 #include "llvm/iMemory.h"
20 #include "llvm/iTerminators.h"
21 #include "llvm/iPHINode.h"
22 #include "llvm/iOther.h"
23 #include "llvm/SymbolTable.h"
24 #include "llvm/Support/CFG.h"
25 #include "Support/StringExtras.h"
26 #include "Support/STLExtras.h"
33 static RegisterPass<PrintModulePass>
34 X("printm", "Print module to stderr",PassInfo::Analysis|PassInfo::Optimization);
35 static RegisterPass<PrintFunctionPass>
36 Y("print","Print function to stderr",PassInfo::Analysis|PassInfo::Optimization);
38 static void WriteAsOperandInternal(ostream &Out, const Value *V, bool PrintName,
39 map<const Type *, string> &TypeTable,
40 SlotCalculator *Table);
42 static const Module *getModuleFromVal(const Value *V) {
43 if (const Argument *MA = dyn_cast<const Argument>(V))
44 return MA->getParent() ? MA->getParent()->getParent() : 0;
45 else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(V))
46 return BB->getParent() ? BB->getParent()->getParent() : 0;
47 else if (const Instruction *I = dyn_cast<const Instruction>(V)) {
48 const Function *M = I->getParent() ? I->getParent()->getParent() : 0;
49 return M ? M->getParent() : 0;
50 } else if (const GlobalValue *GV = dyn_cast<const GlobalValue>(V))
51 return GV->getParent();
55 static SlotCalculator *createSlotCalculator(const Value *V) {
56 assert(!isa<Type>(V) && "Can't create an SC for a type!");
57 if (const Argument *FA = dyn_cast<const Argument>(V)) {
58 return new SlotCalculator(FA->getParent(), true);
59 } else if (const Instruction *I = dyn_cast<const Instruction>(V)) {
60 return new SlotCalculator(I->getParent()->getParent(), true);
61 } else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(V)) {
62 return new SlotCalculator(BB->getParent(), true);
63 } else if (const GlobalVariable *GV = dyn_cast<const GlobalVariable>(V)){
64 return new SlotCalculator(GV->getParent(), true);
65 } else if (const Function *Func = dyn_cast<const Function>(V)) {
66 return new SlotCalculator(Func, true);
72 // If the module has a symbol table, take all global types and stuff their
73 // names into the TypeNames map.
75 static void fillTypeNameTable(const Module *M,
76 map<const Type *, string> &TypeNames) {
77 if (M && M->hasSymbolTable()) {
78 const SymbolTable *ST = M->getSymbolTable();
79 SymbolTable::const_iterator PI = ST->find(Type::TypeTy);
80 if (PI != ST->end()) {
81 SymbolTable::type_const_iterator I = PI->second.begin();
82 for (; I != PI->second.end(); ++I) {
83 // As a heuristic, don't insert pointer to primitive types, because
84 // they are used too often to have a single useful name.
86 const Type *Ty = cast<const Type>(I->second);
87 if (!isa<PointerType>(Ty) ||
88 !cast<PointerType>(Ty)->getElementType()->isPrimitiveType())
89 TypeNames.insert(std::make_pair(Ty, "%"+I->first));
97 static string calcTypeName(const Type *Ty, vector<const Type *> &TypeStack,
98 map<const Type *, string> &TypeNames) {
99 if (Ty->isPrimitiveType()) return Ty->getDescription(); // Base case
101 // Check to see if the type is named.
102 map<const Type *, string>::iterator I = TypeNames.find(Ty);
103 if (I != TypeNames.end()) return I->second;
105 // Check to see if the Type is already on the stack...
106 unsigned Slot = 0, CurSize = TypeStack.size();
107 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
109 // This is another base case for the recursion. In this case, we know
110 // that we have looped back to a type that we have previously visited.
111 // Generate the appropriate upreference to handle this.
114 return "\\" + utostr(CurSize-Slot); // Here's the upreference
116 TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
119 switch (Ty->getPrimitiveID()) {
120 case Type::FunctionTyID: {
121 const FunctionType *FTy = cast<const FunctionType>(Ty);
122 Result = calcTypeName(FTy->getReturnType(), TypeStack, TypeNames) + " (";
123 for (FunctionType::ParamTypes::const_iterator
124 I = FTy->getParamTypes().begin(),
125 E = FTy->getParamTypes().end(); I != E; ++I) {
126 if (I != FTy->getParamTypes().begin())
128 Result += calcTypeName(*I, TypeStack, TypeNames);
130 if (FTy->isVarArg()) {
131 if (!FTy->getParamTypes().empty()) Result += ", ";
137 case Type::StructTyID: {
138 const StructType *STy = cast<const StructType>(Ty);
140 for (StructType::ElementTypes::const_iterator
141 I = STy->getElementTypes().begin(),
142 E = STy->getElementTypes().end(); I != E; ++I) {
143 if (I != STy->getElementTypes().begin())
145 Result += calcTypeName(*I, TypeStack, TypeNames);
150 case Type::PointerTyID:
151 Result = calcTypeName(cast<const PointerType>(Ty)->getElementType(),
152 TypeStack, TypeNames) + "*";
154 case Type::ArrayTyID: {
155 const ArrayType *ATy = cast<const ArrayType>(Ty);
156 Result = "[" + utostr(ATy->getNumElements()) + " x ";
157 Result += calcTypeName(ATy->getElementType(), TypeStack, TypeNames) + "]";
161 Result = "<unrecognized-type>";
164 TypeStack.pop_back(); // Remove self from stack...
169 // printTypeInt - The internal guts of printing out a type that has a
170 // potentially named portion.
172 static ostream &printTypeInt(ostream &Out, const Type *Ty,
173 map<const Type *, string> &TypeNames) {
174 // Primitive types always print out their description, regardless of whether
175 // they have been named or not.
177 if (Ty->isPrimitiveType()) return Out << Ty->getDescription();
179 // Check to see if the type is named.
180 map<const Type *, string>::iterator I = TypeNames.find(Ty);
181 if (I != TypeNames.end()) return Out << I->second;
183 // Otherwise we have a type that has not been named but is a derived type.
184 // Carefully recurse the type hierarchy to print out any contained symbolic
187 vector<const Type *> TypeStack;
188 string TypeName = calcTypeName(Ty, TypeStack, TypeNames);
189 TypeNames.insert(std::make_pair(Ty, TypeName));//Cache type name for later use
190 return Out << TypeName;
194 // WriteTypeSymbolic - This attempts to write the specified type as a symbolic
195 // type, iff there is an entry in the modules symbol table for the specified
196 // type or one of it's component types. This is slower than a simple x << Type;
198 ostream &WriteTypeSymbolic(ostream &Out, const Type *Ty, const Module *M) {
201 // If they want us to print out a type, attempt to make it symbolic if there
202 // is a symbol table in the module...
203 if (M && M->hasSymbolTable()) {
204 map<const Type *, string> TypeNames;
205 fillTypeNameTable(M, TypeNames);
207 return printTypeInt(Out, Ty, TypeNames);
209 return Out << Ty->getDescription();
213 static void WriteConstantInt(ostream &Out, const Constant *CV, bool PrintName,
214 map<const Type *, string> &TypeTable,
215 SlotCalculator *Table) {
216 if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
217 Out << (CB == ConstantBool::True ? "true" : "false");
218 } else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV)) {
219 Out << CI->getValue();
220 } else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV)) {
221 Out << CI->getValue();
222 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
223 // We would like to output the FP constant value in exponential notation,
224 // but we cannot do this if doing so will lose precision. Check here to
225 // make sure that we only output it in exponential format if we can parse
226 // the value back and get the same value.
228 std::string StrVal = ftostr(CFP->getValue());
230 // Check to make sure that the stringized number is not some string like
231 // "Inf" or NaN, that atof will accept, but the lexer will not. Check that
232 // the string matches the "[-+]?[0-9]" regex.
234 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
235 ((StrVal[0] == '-' || StrVal[0] == '+') &&
236 (StrVal[0] >= '0' && StrVal[0] <= '9')))
237 // Reparse stringized version!
238 if (atof(StrVal.c_str()) == CFP->getValue()) {
239 Out << StrVal; return;
242 // Otherwise we could not reparse it to exactly the same value, so we must
243 // output the string in hexadecimal format!
245 // Behave nicely in the face of C TBAA rules... see:
246 // http://www.nullstone.com/htmls/category/aliastyp.htm
248 double Val = CFP->getValue();
249 char *Ptr = (char*)&Val;
250 assert(sizeof(double) == sizeof(uint64_t) && sizeof(double) == 8 &&
251 "assuming that double is 64 bits!");
252 Out << "0x" << utohexstr(*(uint64_t*)Ptr);
254 } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
255 // As a special case, print the array as a string if it is an array of
256 // ubytes or an array of sbytes with positive values.
258 const Type *ETy = CA->getType()->getElementType();
259 bool isString = (ETy == Type::SByteTy || ETy == Type::UByteTy);
261 if (ETy == Type::SByteTy)
262 for (unsigned i = 0; i < CA->getNumOperands(); ++i)
263 if (cast<ConstantSInt>(CA->getOperand(i))->getValue() < 0) {
270 for (unsigned i = 0; i < CA->getNumOperands(); ++i) {
271 unsigned char C = (ETy == Type::SByteTy) ?
272 (unsigned char)cast<ConstantSInt>(CA->getOperand(i))->getValue() :
273 (unsigned char)cast<ConstantUInt>(CA->getOperand(i))->getValue();
275 if (isprint(C) && C != '"' && C != '\\') {
279 << (char) ((C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
280 << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
285 } else { // Cannot output in string format...
287 if (CA->getNumOperands()) {
289 printTypeInt(Out, ETy, TypeTable);
290 WriteAsOperandInternal(Out, CA->getOperand(0),
291 PrintName, TypeTable, Table);
292 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
294 printTypeInt(Out, ETy, TypeTable);
295 WriteAsOperandInternal(Out, CA->getOperand(i), PrintName,
301 } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
303 if (CS->getNumOperands()) {
305 printTypeInt(Out, CS->getOperand(0)->getType(), TypeTable);
307 WriteAsOperandInternal(Out, CS->getOperand(0),
308 PrintName, TypeTable, Table);
310 for (unsigned i = 1; i < CS->getNumOperands(); i++) {
312 printTypeInt(Out, CS->getOperand(i)->getType(), TypeTable);
314 WriteAsOperandInternal(Out, CS->getOperand(i),
315 PrintName, TypeTable, Table);
320 } else if (isa<ConstantPointerNull>(CV)) {
323 } else if (const ConstantPointerRef *PR = dyn_cast<ConstantPointerRef>(CV)) {
324 const GlobalValue *V = PR->getValue();
326 Out << "%" << V->getName();
328 int Slot = Table->getValSlot(V);
332 Out << "<pointer reference badref>";
334 Out << "<pointer reference without context info>";
337 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
338 Out << CE->getOpcodeName();
340 bool isGEP = CE->getOpcode() == Instruction::GetElementPtr;
343 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
344 printTypeInt(Out, (*OI)->getType(), TypeTable);
345 WriteAsOperandInternal(Out, *OI, PrintName, TypeTable, Table);
346 if (OI+1 != CE->op_end())
350 if (CE->getOpcode() == Instruction::Cast) {
352 printTypeInt(Out, CE->getType(), TypeTable);
357 Out << "<placeholder or erroneous Constant>";
362 // WriteAsOperand - Write the name of the specified value out to the specified
363 // ostream. This can be useful when you just want to print int %reg126, not the
364 // whole instruction that generated it.
366 static void WriteAsOperandInternal(ostream &Out, const Value *V, bool PrintName,
367 map<const Type *, string> &TypeTable,
368 SlotCalculator *Table) {
370 if (PrintName && V->hasName()) {
371 Out << "%" << V->getName();
373 if (const Constant *CV = dyn_cast<const Constant>(V)) {
374 WriteConstantInt(Out, CV, PrintName, TypeTable, Table);
378 Slot = Table->getValSlot(V);
380 if (const Type *Ty = dyn_cast<const Type>(V)) {
381 Out << Ty->getDescription();
385 Table = createSlotCalculator(V);
386 if (Table == 0) { Out << "BAD VALUE TYPE!"; return; }
388 Slot = Table->getValSlot(V);
391 if (Slot >= 0) Out << "%" << Slot;
393 Out << "<badref>"; // Not embeded into a location?
400 // WriteAsOperand - Write the name of the specified value out to the specified
401 // ostream. This can be useful when you just want to print int %reg126, not the
402 // whole instruction that generated it.
404 ostream &WriteAsOperand(ostream &Out, const Value *V, bool PrintType,
405 bool PrintName, const Module *Context) {
406 map<const Type *, string> TypeNames;
407 if (Context == 0) Context = getModuleFromVal(V);
409 if (Context && Context->hasSymbolTable())
410 fillTypeNameTable(Context, TypeNames);
413 printTypeInt(Out, V->getType(), TypeNames);
415 WriteAsOperandInternal(Out, V, PrintName, TypeNames, 0);
421 class AssemblyWriter {
423 SlotCalculator &Table;
424 const Module *TheModule;
425 map<const Type *, string> TypeNames;
427 inline AssemblyWriter(ostream &o, SlotCalculator &Tab, const Module *M)
428 : Out(o), Table(Tab), TheModule(M) {
430 // If the module has a symbol table, take all global types and stuff their
431 // names into the TypeNames map.
433 fillTypeNameTable(M, TypeNames);
436 inline void write(const Module *M) { printModule(M); }
437 inline void write(const GlobalVariable *G) { printGlobal(G); }
438 inline void write(const Function *F) { printFunction(F); }
439 inline void write(const BasicBlock *BB) { printBasicBlock(BB); }
440 inline void write(const Instruction *I) { printInstruction(*I); }
441 inline void write(const Constant *CPV) { printConstant(CPV); }
442 inline void write(const Type *Ty) { printType(Ty); }
444 void writeOperand(const Value *Op, bool PrintType, bool PrintName = true);
447 void printModule(const Module *M);
448 void printSymbolTable(const SymbolTable &ST);
449 void printConstant(const Constant *CPV);
450 void printGlobal(const GlobalVariable *GV);
451 void printFunction(const Function *F);
452 void printArgument(const Argument *FA);
453 void printBasicBlock(const BasicBlock *BB);
454 void printInstruction(const Instruction &I);
456 // printType - Go to extreme measures to attempt to print out a short,
457 // symbolic version of a type name.
459 ostream &printType(const Type *Ty) {
460 return printTypeInt(Out, Ty, TypeNames);
463 // printTypeAtLeastOneLevel - Print out one level of the possibly complex type
464 // without considering any symbolic types that we may have equal to it.
466 ostream &printTypeAtLeastOneLevel(const Type *Ty);
468 // printInfoComment - Print a little comment after the instruction indicating
469 // which slot it occupies.
470 void printInfoComment(const Value &V);
474 // printTypeAtLeastOneLevel - Print out one level of the possibly complex type
475 // without considering any symbolic types that we may have equal to it.
477 ostream &AssemblyWriter::printTypeAtLeastOneLevel(const Type *Ty) {
478 if (const FunctionType *FTy = dyn_cast<FunctionType>(Ty)) {
479 printType(FTy->getReturnType()) << " (";
480 for (FunctionType::ParamTypes::const_iterator
481 I = FTy->getParamTypes().begin(),
482 E = FTy->getParamTypes().end(); I != E; ++I) {
483 if (I != FTy->getParamTypes().begin())
487 if (FTy->isVarArg()) {
488 if (!FTy->getParamTypes().empty()) Out << ", ";
492 } else if (const StructType *STy = dyn_cast<StructType>(Ty)) {
494 for (StructType::ElementTypes::const_iterator
495 I = STy->getElementTypes().begin(),
496 E = STy->getElementTypes().end(); I != E; ++I) {
497 if (I != STy->getElementTypes().begin())
502 } else if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
503 printType(PTy->getElementType()) << "*";
504 } else if (const ArrayType *ATy = dyn_cast<ArrayType>(Ty)) {
505 Out << "[" << ATy->getNumElements() << " x ";
506 printType(ATy->getElementType()) << "]";
507 } else if (const OpaqueType *OTy = dyn_cast<OpaqueType>(Ty)) {
508 Out << OTy->getDescription();
510 if (!Ty->isPrimitiveType())
511 Out << "<unknown derived type>";
518 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType,
520 if (PrintType) { Out << " "; printType(Operand->getType()); }
521 WriteAsOperandInternal(Out, Operand, PrintName, TypeNames, &Table);
525 void AssemblyWriter::printModule(const Module *M) {
526 // Loop over the symbol table, emitting all named constants...
527 if (M->hasSymbolTable())
528 printSymbolTable(*M->getSymbolTable());
530 for (Module::const_giterator I = M->gbegin(), E = M->gend(); I != E; ++I)
533 Out << "\nimplementation ; Functions:\n";
535 // Output all of the functions...
536 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
540 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
541 if (GV->hasName()) Out << "%" << GV->getName() << " = ";
543 if (GV->hasInternalLinkage()) Out << "internal ";
544 if (!GV->hasInitializer()) Out << "external ";
546 Out << (GV->isConstant() ? "constant " : "global ");
547 printType(GV->getType()->getElementType());
549 if (GV->hasInitializer())
550 writeOperand(GV->getInitializer(), false, false);
552 printInfoComment(*GV);
557 // printSymbolTable - Run through symbol table looking for named constants
558 // if a named constant is found, emit it's declaration...
560 void AssemblyWriter::printSymbolTable(const SymbolTable &ST) {
561 for (SymbolTable::const_iterator TI = ST.begin(); TI != ST.end(); ++TI) {
562 SymbolTable::type_const_iterator I = ST.type_begin(TI->first);
563 SymbolTable::type_const_iterator End = ST.type_end(TI->first);
565 for (; I != End; ++I) {
566 const Value *V = I->second;
567 if (const Constant *CPV = dyn_cast<const Constant>(V)) {
569 } else if (const Type *Ty = dyn_cast<const Type>(V)) {
570 Out << "\t%" << I->first << " = type ";
572 // Make sure we print out at least one level of the type structure, so
573 // that we do not get %FILE = type %FILE
575 printTypeAtLeastOneLevel(Ty) << "\n";
582 // printConstant - Print out a constant pool entry...
584 void AssemblyWriter::printConstant(const Constant *CPV) {
585 // Don't print out unnamed constants, they will be inlined
586 if (!CPV->hasName()) return;
589 Out << "\t%" << CPV->getName() << " =";
591 // Write the value out now...
592 writeOperand(CPV, true, false);
594 printInfoComment(*CPV);
598 // printFunction - Print all aspects of a function.
600 void AssemblyWriter::printFunction(const Function *F) {
601 // Print out the return type and name...
602 Out << "\n" << (F->isExternal() ? "declare " : "")
603 << (F->hasInternalLinkage() ? "internal " : "");
604 printType(F->getReturnType()) << " %" << F->getName() << "(";
605 Table.incorporateFunction(F);
607 // Loop over the arguments, printing them...
608 const FunctionType *FT = F->getFunctionType();
610 for(Function::const_aiterator I = F->abegin(), E = F->aend(); I != E; ++I)
613 // Finish printing arguments...
614 if (FT->isVarArg()) {
615 if (FT->getParamTypes().size()) Out << ", ";
616 Out << "..."; // Output varargs portion of signature!
620 if (F->isExternal()) {
625 // Output all of its basic blocks... for the function
626 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
632 Table.purgeFunction();
635 // printArgument - This member is called for every argument that
636 // is passed into the function. Simply print it out
638 void AssemblyWriter::printArgument(const Argument *Arg) {
639 // Insert commas as we go... the first arg doesn't get a comma
640 if (Arg != &Arg->getParent()->afront()) Out << ", ";
643 printType(Arg->getType());
645 // Output name, if available...
647 Out << " %" << Arg->getName();
648 else if (Table.getValSlot(Arg) < 0)
652 // printBasicBlock - This member is called for each basic block in a methd.
654 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
655 if (BB->hasName()) { // Print out the label if it exists...
656 Out << "\n" << BB->getName() << ":";
657 } else if (!BB->use_empty()) { // Don't print block # of no uses...
658 int Slot = Table.getValSlot(BB);
659 Out << "\n; <label>:";
661 Out << Slot; // Extra newline seperates out label's
666 // Output predecessors for the block...
668 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
671 Out << " No predecessors!";
674 writeOperand(*PI, false, true);
675 for (++PI; PI != PE; ++PI) {
677 writeOperand(*PI, false, true);
683 // Output all of the instructions in the basic block...
684 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
685 printInstruction(*I);
689 // printInfoComment - Print a little comment after the instruction indicating
690 // which slot it occupies.
692 void AssemblyWriter::printInfoComment(const Value &V) {
693 if (V.getType() != Type::VoidTy) {
695 printType(V.getType()) << ">";
698 int Slot = Table.getValSlot(&V); // Print out the def slot taken...
699 if (Slot >= 0) Out << ":" << Slot;
700 else Out << ":<badref>";
702 Out << " [#uses=" << V.use_size() << "]"; // Output # uses
706 // printInstruction - This member is called for each Instruction in a methd.
708 void AssemblyWriter::printInstruction(const Instruction &I) {
711 // Print out name if it exists...
713 Out << "%" << I.getName() << " = ";
715 // Print out the opcode...
716 Out << I.getOpcodeName();
718 // Print out the type of the operands...
719 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
721 // Special case conditional branches to swizzle the condition out to the front
722 if (isa<BranchInst>(I) && I.getNumOperands() > 1) {
723 writeOperand(I.getOperand(2), true);
725 writeOperand(Operand, true);
727 writeOperand(I.getOperand(1), true);
729 } else if (isa<SwitchInst>(I)) {
730 // Special case switch statement to get formatting nice and correct...
731 writeOperand(Operand , true); Out << ",";
732 writeOperand(I.getOperand(1), true); Out << " [";
734 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
736 writeOperand(I.getOperand(op ), true); Out << ",";
737 writeOperand(I.getOperand(op+1), true);
740 } else if (isa<PHINode>(I)) {
742 printType(I.getType());
745 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
748 writeOperand(I.getOperand(op ), false); Out << ",";
749 writeOperand(I.getOperand(op+1), false); Out << " ]";
751 } else if (isa<ReturnInst>(I) && !Operand) {
753 } else if (isa<CallInst>(I)) {
754 const PointerType *PTy = dyn_cast<PointerType>(Operand->getType());
755 const FunctionType*MTy = PTy ? dyn_cast<FunctionType>(PTy->getElementType()):0;
756 const Type *RetTy = MTy ? MTy->getReturnType() : 0;
758 // If possible, print out the short form of the call instruction, but we can
759 // only do this if the first argument is a pointer to a nonvararg function,
760 // and if the value returned is not a pointer to a function.
762 if (RetTy && MTy && !MTy->isVarArg() &&
763 (!isa<PointerType>(RetTy) ||
764 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
765 Out << " "; printType(RetTy);
766 writeOperand(Operand, false);
768 writeOperand(Operand, true);
771 if (I.getNumOperands() > 1) writeOperand(I.getOperand(1), true);
772 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; ++op) {
774 writeOperand(I.getOperand(op), true);
778 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
779 // TODO: Should try to print out short form of the Invoke instruction
780 writeOperand(Operand, true);
782 if (I.getNumOperands() > 3) writeOperand(I.getOperand(3), true);
783 for (unsigned op = 4, Eop = I.getNumOperands(); op < Eop; ++op) {
785 writeOperand(I.getOperand(op), true);
788 Out << " )\n\t\t\tto";
789 writeOperand(II->getNormalDest(), true);
791 writeOperand(II->getExceptionalDest(), true);
793 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
795 printType(AI->getType()->getElementType());
796 if (AI->isArrayAllocation()) {
798 writeOperand(AI->getArraySize(), true);
800 } else if (isa<CastInst>(I)) {
801 if (Operand) writeOperand(Operand, true);
803 printType(I.getType());
804 } else if (Operand) { // Print the normal way...
806 // PrintAllTypes - Instructions who have operands of all the same type
807 // omit the type from all but the first operand. If the instruction has
808 // different type operands (for example br), then they are all printed.
809 bool PrintAllTypes = false;
810 const Type *TheType = Operand->getType();
812 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
813 Operand = I.getOperand(i);
814 if (Operand->getType() != TheType) {
815 PrintAllTypes = true; // We have differing types! Print them all!
820 // Shift Left & Right print both types even for Ubyte LHS
821 if (isa<ShiftInst>(I)) PrintAllTypes = true;
823 if (!PrintAllTypes) {
825 printType(I.getOperand(0)->getType());
828 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
830 writeOperand(I.getOperand(i), PrintAllTypes);
839 //===----------------------------------------------------------------------===//
840 // External Interface declarations
841 //===----------------------------------------------------------------------===//
844 void Module::print(std::ostream &o) const {
845 SlotCalculator SlotTable(this, true);
846 AssemblyWriter W(o, SlotTable, this);
850 void GlobalVariable::print(std::ostream &o) const {
851 SlotCalculator SlotTable(getParent(), true);
852 AssemblyWriter W(o, SlotTable, getParent());
856 void Function::print(std::ostream &o) const {
857 SlotCalculator SlotTable(getParent(), true);
858 AssemblyWriter W(o, SlotTable, getParent());
863 void BasicBlock::print(std::ostream &o) const {
864 SlotCalculator SlotTable(getParent(), true);
865 AssemblyWriter W(o, SlotTable,
866 getParent() ? getParent()->getParent() : 0);
870 void Instruction::print(std::ostream &o) const {
871 const Function *F = getParent() ? getParent()->getParent() : 0;
872 SlotCalculator SlotTable(F, true);
873 AssemblyWriter W(o, SlotTable, F ? F->getParent() : 0);
878 void Constant::print(std::ostream &o) const {
879 if (this == 0) { o << "<null> constant value\n"; return; }
881 // Handle CPR's special, because they have context information...
882 if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(this)) {
883 CPR->getValue()->print(o); // Print as a global value, with context info.
887 o << " " << getType()->getDescription() << " ";
889 map<const Type *, string> TypeTable;
890 WriteConstantInt(o, this, false, TypeTable, 0);
893 void Type::print(std::ostream &o) const {
897 o << getDescription();
900 void Argument::print(std::ostream &o) const {
901 o << getType() << " " << getName();
904 void Value::dump() const { print(std::cerr); }
906 //===----------------------------------------------------------------------===//
907 // CachedWriter Class Implementation
908 //===----------------------------------------------------------------------===//
910 void CachedWriter::setModule(const Module *M) {
911 delete SC; delete AW;
913 SC = new SlotCalculator(M, true);
914 AW = new AssemblyWriter(Out, *SC, M);
920 CachedWriter::~CachedWriter() {
925 CachedWriter &CachedWriter::operator<<(const Value *V) {
926 assert(AW && SC && "CachedWriter does not have a current module!");
927 switch (V->getValueType()) {
928 case Value::ConstantVal:
929 case Value::ArgumentVal: AW->writeOperand(V, true, true); break;
930 case Value::TypeVal: AW->write(cast<const Type>(V)); break;
931 case Value::InstructionVal: AW->write(cast<Instruction>(V)); break;
932 case Value::BasicBlockVal: AW->write(cast<BasicBlock>(V)); break;
933 case Value::FunctionVal: AW->write(cast<Function>(V)); break;
934 case Value::GlobalVariableVal: AW->write(cast<GlobalVariable>(V)); break;
935 default: Out << "<unknown value type: " << V->getValueType() << ">"; break;