1 //===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This 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/Writer.h"
18 #include "llvm/Assembly/PrintModulePass.h"
19 #include "llvm/Assembly/AsmAnnotationWriter.h"
20 #include "llvm/CallingConv.h"
21 #include "llvm/Constants.h"
22 #include "llvm/DerivedTypes.h"
23 #include "llvm/InlineAsm.h"
24 #include "llvm/Instruction.h"
25 #include "llvm/Instructions.h"
26 #include "llvm/MDNode.h"
27 #include "llvm/Module.h"
28 #include "llvm/ValueSymbolTable.h"
29 #include "llvm/TypeSymbolTable.h"
30 #include "llvm/ADT/DenseSet.h"
31 #include "llvm/ADT/StringExtras.h"
32 #include "llvm/ADT/STLExtras.h"
33 #include "llvm/Support/CFG.h"
34 #include "llvm/Support/ErrorHandling.h"
35 #include "llvm/Support/MathExtras.h"
36 #include "llvm/Support/Streams.h"
37 #include "llvm/Support/raw_ostream.h"
43 // Make virtual table appear in this compilation unit.
44 AssemblyAnnotationWriter::~AssemblyAnnotationWriter() {}
46 //===----------------------------------------------------------------------===//
48 //===----------------------------------------------------------------------===//
50 static const Module *getModuleFromVal(const Value *V) {
51 if (const Argument *MA = dyn_cast<Argument>(V))
52 return MA->getParent() ? MA->getParent()->getParent() : 0;
54 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
55 return BB->getParent() ? BB->getParent()->getParent() : 0;
57 if (const Instruction *I = dyn_cast<Instruction>(V)) {
58 const Function *M = I->getParent() ? I->getParent()->getParent() : 0;
59 return M ? M->getParent() : 0;
62 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V))
63 return GV->getParent();
67 // PrintEscapedString - Print each character of the specified string, escaping
68 // it if it is not printable or if it is an escape char.
69 static void PrintEscapedString(const char *Str, unsigned Length,
71 for (unsigned i = 0; i != Length; ++i) {
72 unsigned char C = Str[i];
73 if (isprint(C) && C != '\\' && C != '"')
76 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
80 // PrintEscapedString - Print each character of the specified string, escaping
81 // it if it is not printable or if it is an escape char.
82 static void PrintEscapedString(const std::string &Str, raw_ostream &Out) {
83 PrintEscapedString(Str.c_str(), Str.size(), Out);
93 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
94 /// prefixed with % (if the string only contains simple characters) or is
95 /// surrounded with ""'s (if it has special chars in it). Print it out.
96 static void PrintLLVMName(raw_ostream &OS, const char *NameStr,
97 unsigned NameLen, PrefixType Prefix) {
98 assert(NameStr && "Cannot get empty name!");
100 default: assert(0 && "Bad prefix!");
101 case NoPrefix: break;
102 case GlobalPrefix: OS << '@'; break;
103 case LabelPrefix: break;
104 case LocalPrefix: OS << '%'; break;
107 // Scan the name to see if it needs quotes first.
108 bool NeedsQuotes = isdigit(NameStr[0]);
110 for (unsigned i = 0; i != NameLen; ++i) {
112 if (!isalnum(C) && C != '-' && C != '.' && C != '_') {
119 // If we didn't need any quotes, just write out the name in one blast.
121 OS.write(NameStr, NameLen);
125 // Okay, we need quotes. Output the quotes and escape any scary characters as
128 PrintEscapedString(NameStr, NameLen, OS);
132 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
133 /// prefixed with % (if the string only contains simple characters) or is
134 /// surrounded with ""'s (if it has special chars in it). Print it out.
135 static void PrintLLVMName(raw_ostream &OS, const Value *V) {
136 PrintLLVMName(OS, V->getNameStart(), V->getNameLen(),
137 isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix);
140 //===----------------------------------------------------------------------===//
141 // TypePrinting Class: Type printing machinery
142 //===----------------------------------------------------------------------===//
144 static DenseMap<const Type *, std::string> &getTypeNamesMap(void *M) {
145 return *static_cast<DenseMap<const Type *, std::string>*>(M);
148 void TypePrinting::clear() {
149 getTypeNamesMap(TypeNames).clear();
152 bool TypePrinting::hasTypeName(const Type *Ty) const {
153 return getTypeNamesMap(TypeNames).count(Ty);
156 void TypePrinting::addTypeName(const Type *Ty, const std::string &N) {
157 getTypeNamesMap(TypeNames).insert(std::make_pair(Ty, N));
161 TypePrinting::TypePrinting() {
162 TypeNames = new DenseMap<const Type *, std::string>();
165 TypePrinting::~TypePrinting() {
166 delete &getTypeNamesMap(TypeNames);
169 /// CalcTypeName - Write the specified type to the specified raw_ostream, making
170 /// use of type names or up references to shorten the type name where possible.
171 void TypePrinting::CalcTypeName(const Type *Ty,
172 SmallVectorImpl<const Type *> &TypeStack,
173 raw_ostream &OS, bool IgnoreTopLevelName) {
174 // Check to see if the type is named.
175 if (!IgnoreTopLevelName) {
176 DenseMap<const Type *, std::string> &TM = getTypeNamesMap(TypeNames);
177 DenseMap<const Type *, std::string>::iterator I = TM.find(Ty);
184 // Check to see if the Type is already on the stack...
185 unsigned Slot = 0, CurSize = TypeStack.size();
186 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
188 // This is another base case for the recursion. In this case, we know
189 // that we have looped back to a type that we have previously visited.
190 // Generate the appropriate upreference to handle this.
191 if (Slot < CurSize) {
192 OS << '\\' << unsigned(CurSize-Slot); // Here's the upreference
196 TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
198 switch (Ty->getTypeID()) {
199 case Type::VoidTyID: OS << "void"; break;
200 case Type::FloatTyID: OS << "float"; break;
201 case Type::DoubleTyID: OS << "double"; break;
202 case Type::X86_FP80TyID: OS << "x86_fp80"; break;
203 case Type::FP128TyID: OS << "fp128"; break;
204 case Type::PPC_FP128TyID: OS << "ppc_fp128"; break;
205 case Type::LabelTyID: OS << "label"; break;
206 case Type::MetadataTyID: OS << "metadata"; break;
207 case Type::IntegerTyID:
208 OS << 'i' << cast<IntegerType>(Ty)->getBitWidth();
211 case Type::FunctionTyID: {
212 const FunctionType *FTy = cast<FunctionType>(Ty);
213 CalcTypeName(FTy->getReturnType(), TypeStack, OS);
215 for (FunctionType::param_iterator I = FTy->param_begin(),
216 E = FTy->param_end(); I != E; ++I) {
217 if (I != FTy->param_begin())
219 CalcTypeName(*I, TypeStack, OS);
221 if (FTy->isVarArg()) {
222 if (FTy->getNumParams()) OS << ", ";
228 case Type::StructTyID: {
229 const StructType *STy = cast<StructType>(Ty);
233 for (StructType::element_iterator I = STy->element_begin(),
234 E = STy->element_end(); I != E; ++I) {
235 CalcTypeName(*I, TypeStack, OS);
236 if (next(I) != STy->element_end())
245 case Type::PointerTyID: {
246 const PointerType *PTy = cast<PointerType>(Ty);
247 CalcTypeName(PTy->getElementType(), TypeStack, OS);
248 if (unsigned AddressSpace = PTy->getAddressSpace())
249 OS << " addrspace(" << AddressSpace << ')';
253 case Type::ArrayTyID: {
254 const ArrayType *ATy = cast<ArrayType>(Ty);
255 OS << '[' << ATy->getNumElements() << " x ";
256 CalcTypeName(ATy->getElementType(), TypeStack, OS);
260 case Type::VectorTyID: {
261 const VectorType *PTy = cast<VectorType>(Ty);
262 OS << "<" << PTy->getNumElements() << " x ";
263 CalcTypeName(PTy->getElementType(), TypeStack, OS);
267 case Type::OpaqueTyID:
271 OS << "<unrecognized-type>";
275 TypeStack.pop_back(); // Remove self from stack.
278 /// printTypeInt - The internal guts of printing out a type that has a
279 /// potentially named portion.
281 void TypePrinting::print(const Type *Ty, raw_ostream &OS,
282 bool IgnoreTopLevelName) {
283 // Check to see if the type is named.
284 DenseMap<const Type*, std::string> &TM = getTypeNamesMap(TypeNames);
285 if (!IgnoreTopLevelName) {
286 DenseMap<const Type*, std::string>::iterator I = TM.find(Ty);
293 // Otherwise we have a type that has not been named but is a derived type.
294 // Carefully recurse the type hierarchy to print out any contained symbolic
296 SmallVector<const Type *, 16> TypeStack;
297 std::string TypeName;
299 raw_string_ostream TypeOS(TypeName);
300 CalcTypeName(Ty, TypeStack, TypeOS, IgnoreTopLevelName);
303 // Cache type name for later use.
304 if (!IgnoreTopLevelName)
305 TM.insert(std::make_pair(Ty, TypeOS.str()));
310 // To avoid walking constant expressions multiple times and other IR
311 // objects, we keep several helper maps.
312 DenseSet<const Value*> VisitedConstants;
313 DenseSet<const Type*> VisitedTypes;
316 std::vector<const Type*> &NumberedTypes;
318 TypeFinder(TypePrinting &tp, std::vector<const Type*> &numberedTypes)
319 : TP(tp), NumberedTypes(numberedTypes) {}
321 void Run(const Module &M) {
322 // Get types from the type symbol table. This gets opaque types referened
323 // only through derived named types.
324 const TypeSymbolTable &ST = M.getTypeSymbolTable();
325 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
327 IncorporateType(TI->second);
329 // Get types from global variables.
330 for (Module::const_global_iterator I = M.global_begin(),
331 E = M.global_end(); I != E; ++I) {
332 IncorporateType(I->getType());
333 if (I->hasInitializer())
334 IncorporateValue(I->getInitializer());
337 // Get types from aliases.
338 for (Module::const_alias_iterator I = M.alias_begin(),
339 E = M.alias_end(); I != E; ++I) {
340 IncorporateType(I->getType());
341 IncorporateValue(I->getAliasee());
344 // Get types from functions.
345 for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) {
346 IncorporateType(FI->getType());
348 for (Function::const_iterator BB = FI->begin(), E = FI->end();
350 for (BasicBlock::const_iterator II = BB->begin(),
351 E = BB->end(); II != E; ++II) {
352 const Instruction &I = *II;
353 // Incorporate the type of the instruction and all its operands.
354 IncorporateType(I.getType());
355 for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
357 IncorporateValue(*OI);
363 void IncorporateType(const Type *Ty) {
364 // Check to see if we're already visited this type.
365 if (!VisitedTypes.insert(Ty).second)
368 // If this is a structure or opaque type, add a name for the type.
369 if (((isa<StructType>(Ty) && cast<StructType>(Ty)->getNumElements())
370 || isa<OpaqueType>(Ty)) && !TP.hasTypeName(Ty)) {
371 TP.addTypeName(Ty, "%"+utostr(unsigned(NumberedTypes.size())));
372 NumberedTypes.push_back(Ty);
375 // Recursively walk all contained types.
376 for (Type::subtype_iterator I = Ty->subtype_begin(),
377 E = Ty->subtype_end(); I != E; ++I)
381 /// IncorporateValue - This method is used to walk operand lists finding
382 /// types hiding in constant expressions and other operands that won't be
383 /// walked in other ways. GlobalValues, basic blocks, instructions, and
384 /// inst operands are all explicitly enumerated.
385 void IncorporateValue(const Value *V) {
386 if (V == 0 || !isa<Constant>(V) || isa<GlobalValue>(V)) return;
389 if (!VisitedConstants.insert(V).second)
393 IncorporateType(V->getType());
395 // Look in operands for types.
396 const Constant *C = cast<Constant>(V);
397 for (Constant::const_op_iterator I = C->op_begin(),
398 E = C->op_end(); I != E;++I)
399 IncorporateValue(*I);
402 } // end anonymous namespace
405 /// AddModuleTypesToPrinter - Add all of the symbolic type names for types in
406 /// the specified module to the TypePrinter and all numbered types to it and the
407 /// NumberedTypes table.
408 static void AddModuleTypesToPrinter(TypePrinting &TP,
409 std::vector<const Type*> &NumberedTypes,
413 // If the module has a symbol table, take all global types and stuff their
414 // names into the TypeNames map.
415 const TypeSymbolTable &ST = M->getTypeSymbolTable();
416 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
418 const Type *Ty = cast<Type>(TI->second);
420 // As a heuristic, don't insert pointer to primitive types, because
421 // they are used too often to have a single useful name.
422 if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
423 const Type *PETy = PTy->getElementType();
424 if ((PETy->isPrimitiveType() || PETy->isInteger()) &&
425 !isa<OpaqueType>(PETy))
429 // Likewise don't insert primitives either.
430 if (Ty->isInteger() || Ty->isPrimitiveType())
433 // Get the name as a string and insert it into TypeNames.
435 raw_string_ostream NameOS(NameStr);
436 PrintLLVMName(NameOS, TI->first.c_str(), TI->first.length(), LocalPrefix);
437 TP.addTypeName(Ty, NameOS.str());
440 // Walk the entire module to find references to unnamed structure and opaque
441 // types. This is required for correctness by opaque types (because multiple
442 // uses of an unnamed opaque type needs to be referred to by the same ID) and
443 // it shrinks complex recursive structure types substantially in some cases.
444 TypeFinder(TP, NumberedTypes).Run(*M);
448 /// WriteTypeSymbolic - This attempts to write the specified type as a symbolic
449 /// type, iff there is an entry in the modules symbol table for the specified
450 /// type or one of it's component types.
452 void llvm::WriteTypeSymbolic(raw_ostream &OS, const Type *Ty, const Module *M) {
453 TypePrinting Printer;
454 std::vector<const Type*> NumberedTypes;
455 AddModuleTypesToPrinter(Printer, NumberedTypes, M);
456 Printer.print(Ty, OS);
459 //===----------------------------------------------------------------------===//
460 // SlotTracker Class: Enumerate slot numbers for unnamed values
461 //===----------------------------------------------------------------------===//
465 /// This class provides computation of slot numbers for LLVM Assembly writing.
469 /// ValueMap - A mapping of Values to slot numbers
470 typedef DenseMap<const Value*, unsigned> ValueMap;
473 /// TheModule - The module for which we are holding slot numbers
474 const Module* TheModule;
476 /// TheFunction - The function for which we are holding slot numbers
477 const Function* TheFunction;
478 bool FunctionProcessed;
480 /// mMap - The TypePlanes map for the module level data
484 /// fMap - The TypePlanes map for the function level data
489 /// Construct from a module
490 explicit SlotTracker(const Module *M);
491 /// Construct from a function, starting out in incorp state.
492 explicit SlotTracker(const Function *F);
494 /// Return the slot number of the specified value in it's type
495 /// plane. If something is not in the SlotTracker, return -1.
496 int getLocalSlot(const Value *V);
497 int getGlobalSlot(const GlobalValue *V);
499 /// If you'd like to deal with a function instead of just a module, use
500 /// this method to get its data into the SlotTracker.
501 void incorporateFunction(const Function *F) {
503 FunctionProcessed = false;
506 /// After calling incorporateFunction, use this method to remove the
507 /// most recently incorporated function from the SlotTracker. This
508 /// will reset the state of the machine back to just the module contents.
509 void purgeFunction();
511 // Implementation Details
513 /// This function does the actual initialization.
514 inline void initialize();
516 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
517 void CreateModuleSlot(const GlobalValue *V);
519 /// CreateFunctionSlot - Insert the specified Value* into the slot table.
520 void CreateFunctionSlot(const Value *V);
522 /// Add all of the module level global variables (and their initializers)
523 /// and function declarations, but not the contents of those functions.
524 void processModule();
526 /// Add all of the functions arguments, basic blocks, and instructions
527 void processFunction();
529 SlotTracker(const SlotTracker &); // DO NOT IMPLEMENT
530 void operator=(const SlotTracker &); // DO NOT IMPLEMENT
533 } // end anonymous namespace
536 static SlotTracker *createSlotTracker(const Value *V) {
537 if (const Argument *FA = dyn_cast<Argument>(V))
538 return new SlotTracker(FA->getParent());
540 if (const Instruction *I = dyn_cast<Instruction>(V))
541 return new SlotTracker(I->getParent()->getParent());
543 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
544 return new SlotTracker(BB->getParent());
546 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
547 return new SlotTracker(GV->getParent());
549 if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
550 return new SlotTracker(GA->getParent());
552 if (const Function *Func = dyn_cast<Function>(V))
553 return new SlotTracker(Func);
559 #define ST_DEBUG(X) cerr << X
564 // Module level constructor. Causes the contents of the Module (sans functions)
565 // to be added to the slot table.
566 SlotTracker::SlotTracker(const Module *M)
567 : TheModule(M), TheFunction(0), FunctionProcessed(false), mNext(0), fNext(0) {
570 // Function level constructor. Causes the contents of the Module and the one
571 // function provided to be added to the slot table.
572 SlotTracker::SlotTracker(const Function *F)
573 : TheModule(F ? F->getParent() : 0), TheFunction(F), FunctionProcessed(false),
577 inline void SlotTracker::initialize() {
580 TheModule = 0; ///< Prevent re-processing next time we're called.
583 if (TheFunction && !FunctionProcessed)
587 // Iterate through all the global variables, functions, and global
588 // variable initializers and create slots for them.
589 void SlotTracker::processModule() {
590 ST_DEBUG("begin processModule!\n");
592 // Add all of the unnamed global variables to the value table.
593 for (Module::const_global_iterator I = TheModule->global_begin(),
594 E = TheModule->global_end(); I != E; ++I)
598 // Add all the unnamed functions to the table.
599 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
604 ST_DEBUG("end processModule!\n");
608 // Process the arguments, basic blocks, and instructions of a function.
609 void SlotTracker::processFunction() {
610 ST_DEBUG("begin processFunction!\n");
613 // Add all the function arguments with no names.
614 for(Function::const_arg_iterator AI = TheFunction->arg_begin(),
615 AE = TheFunction->arg_end(); AI != AE; ++AI)
617 CreateFunctionSlot(AI);
619 ST_DEBUG("Inserting Instructions:\n");
621 // Add all of the basic blocks and instructions with no names.
622 for (Function::const_iterator BB = TheFunction->begin(),
623 E = TheFunction->end(); BB != E; ++BB) {
625 CreateFunctionSlot(BB);
626 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
627 if (I->getType() != Type::VoidTy && !I->hasName())
628 CreateFunctionSlot(I);
631 FunctionProcessed = true;
633 ST_DEBUG("end processFunction!\n");
636 /// Clean up after incorporating a function. This is the only way to get out of
637 /// the function incorporation state that affects get*Slot/Create*Slot. Function
638 /// incorporation state is indicated by TheFunction != 0.
639 void SlotTracker::purgeFunction() {
640 ST_DEBUG("begin purgeFunction!\n");
641 fMap.clear(); // Simply discard the function level map
643 FunctionProcessed = false;
644 ST_DEBUG("end purgeFunction!\n");
647 /// getGlobalSlot - Get the slot number of a global value.
648 int SlotTracker::getGlobalSlot(const GlobalValue *V) {
649 // Check for uninitialized state and do lazy initialization.
652 // Find the type plane in the module map
653 ValueMap::iterator MI = mMap.find(V);
654 return MI == mMap.end() ? -1 : (int)MI->second;
658 /// getLocalSlot - Get the slot number for a value that is local to a function.
659 int SlotTracker::getLocalSlot(const Value *V) {
660 assert(!isa<Constant>(V) && "Can't get a constant or global slot with this!");
662 // Check for uninitialized state and do lazy initialization.
665 ValueMap::iterator FI = fMap.find(V);
666 return FI == fMap.end() ? -1 : (int)FI->second;
670 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
671 void SlotTracker::CreateModuleSlot(const GlobalValue *V) {
672 assert(V && "Can't insert a null Value into SlotTracker!");
673 assert(V->getType() != Type::VoidTy && "Doesn't need a slot!");
674 assert(!V->hasName() && "Doesn't need a slot!");
676 unsigned DestSlot = mNext++;
679 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
681 // G = Global, F = Function, A = Alias, o = other
682 ST_DEBUG((isa<GlobalVariable>(V) ? 'G' :
683 (isa<Function>(V) ? 'F' :
684 (isa<GlobalAlias>(V) ? 'A' : 'o'))) << "]\n");
688 /// CreateSlot - Create a new slot for the specified value if it has no name.
689 void SlotTracker::CreateFunctionSlot(const Value *V) {
690 assert(V->getType() != Type::VoidTy && !V->hasName() &&
691 "Doesn't need a slot!");
693 unsigned DestSlot = fNext++;
696 // G = Global, F = Function, o = other
697 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
698 DestSlot << " [o]\n");
703 //===----------------------------------------------------------------------===//
704 // AsmWriter Implementation
705 //===----------------------------------------------------------------------===//
707 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
708 TypePrinting &TypePrinter,
709 SlotTracker *Machine);
713 static const char *getPredicateText(unsigned predicate) {
714 const char * pred = "unknown";
716 case FCmpInst::FCMP_FALSE: pred = "false"; break;
717 case FCmpInst::FCMP_OEQ: pred = "oeq"; break;
718 case FCmpInst::FCMP_OGT: pred = "ogt"; break;
719 case FCmpInst::FCMP_OGE: pred = "oge"; break;
720 case FCmpInst::FCMP_OLT: pred = "olt"; break;
721 case FCmpInst::FCMP_OLE: pred = "ole"; break;
722 case FCmpInst::FCMP_ONE: pred = "one"; break;
723 case FCmpInst::FCMP_ORD: pred = "ord"; break;
724 case FCmpInst::FCMP_UNO: pred = "uno"; break;
725 case FCmpInst::FCMP_UEQ: pred = "ueq"; break;
726 case FCmpInst::FCMP_UGT: pred = "ugt"; break;
727 case FCmpInst::FCMP_UGE: pred = "uge"; break;
728 case FCmpInst::FCMP_ULT: pred = "ult"; break;
729 case FCmpInst::FCMP_ULE: pred = "ule"; break;
730 case FCmpInst::FCMP_UNE: pred = "une"; break;
731 case FCmpInst::FCMP_TRUE: pred = "true"; break;
732 case ICmpInst::ICMP_EQ: pred = "eq"; break;
733 case ICmpInst::ICMP_NE: pred = "ne"; break;
734 case ICmpInst::ICMP_SGT: pred = "sgt"; break;
735 case ICmpInst::ICMP_SGE: pred = "sge"; break;
736 case ICmpInst::ICMP_SLT: pred = "slt"; break;
737 case ICmpInst::ICMP_SLE: pred = "sle"; break;
738 case ICmpInst::ICMP_UGT: pred = "ugt"; break;
739 case ICmpInst::ICMP_UGE: pred = "uge"; break;
740 case ICmpInst::ICMP_ULT: pred = "ult"; break;
741 case ICmpInst::ICMP_ULE: pred = "ule"; break;
746 static void WriteConstantInt(raw_ostream &Out, const Constant *CV,
747 TypePrinting &TypePrinter, SlotTracker *Machine) {
748 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
749 if (CI->getType() == Type::Int1Ty) {
750 Out << (CI->getZExtValue() ? "true" : "false");
753 Out << CI->getValue();
757 if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
758 if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble ||
759 &CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle) {
760 // We would like to output the FP constant value in exponential notation,
761 // but we cannot do this if doing so will lose precision. Check here to
762 // make sure that we only output it in exponential format if we can parse
763 // the value back and get the same value.
766 bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble;
767 double Val = isDouble ? CFP->getValueAPF().convertToDouble() :
768 CFP->getValueAPF().convertToFloat();
769 std::string StrVal = ftostr(CFP->getValueAPF());
771 // Check to make sure that the stringized number is not some string like
772 // "Inf" or NaN, that atof will accept, but the lexer will not. Check
773 // that the string matches the "[-+]?[0-9]" regex.
775 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
776 ((StrVal[0] == '-' || StrVal[0] == '+') &&
777 (StrVal[1] >= '0' && StrVal[1] <= '9'))) {
778 // Reparse stringized version!
779 if (atof(StrVal.c_str()) == Val) {
784 // Otherwise we could not reparse it to exactly the same value, so we must
785 // output the string in hexadecimal format! Note that loading and storing
786 // floating point types changes the bits of NaNs on some hosts, notably
787 // x86, so we must not use these types.
788 assert(sizeof(double) == sizeof(uint64_t) &&
789 "assuming that double is 64 bits!");
791 APFloat apf = CFP->getValueAPF();
792 // Floats are represented in ASCII IR as double, convert.
794 apf.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
797 utohex_buffer(uint64_t(apf.bitcastToAPInt().getZExtValue()),
802 // Some form of long double. These appear as a magic letter identifying
803 // the type, then a fixed number of hex digits.
805 if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) {
807 // api needed to prevent premature destruction
808 APInt api = CFP->getValueAPF().bitcastToAPInt();
809 const uint64_t* p = api.getRawData();
810 uint64_t word = p[1];
812 int width = api.getBitWidth();
813 for (int j=0; j<width; j+=4, shiftcount-=4) {
814 unsigned int nibble = (word>>shiftcount) & 15;
816 Out << (unsigned char)(nibble + '0');
818 Out << (unsigned char)(nibble - 10 + 'A');
819 if (shiftcount == 0 && j+4 < width) {
823 shiftcount = width-j-4;
827 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad)
829 else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble)
832 assert(0 && "Unsupported floating point type");
833 // api needed to prevent premature destruction
834 APInt api = CFP->getValueAPF().bitcastToAPInt();
835 const uint64_t* p = api.getRawData();
838 int width = api.getBitWidth();
839 for (int j=0; j<width; j+=4, shiftcount-=4) {
840 unsigned int nibble = (word>>shiftcount) & 15;
842 Out << (unsigned char)(nibble + '0');
844 Out << (unsigned char)(nibble - 10 + 'A');
845 if (shiftcount == 0 && j+4 < width) {
849 shiftcount = width-j-4;
855 if (isa<ConstantAggregateZero>(CV)) {
856 Out << "zeroinitializer";
860 if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
861 // As a special case, print the array as a string if it is an array of
862 // i8 with ConstantInt values.
864 const Type *ETy = CA->getType()->getElementType();
865 if (CA->isString()) {
867 PrintEscapedString(CA->getAsString(), Out);
869 } else { // Cannot output in string format...
871 if (CA->getNumOperands()) {
872 TypePrinter.print(ETy, Out);
874 WriteAsOperandInternal(Out, CA->getOperand(0),
875 TypePrinter, Machine);
876 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
878 TypePrinter.print(ETy, Out);
880 WriteAsOperandInternal(Out, CA->getOperand(i), TypePrinter, Machine);
888 if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
889 if (CS->getType()->isPacked())
892 unsigned N = CS->getNumOperands();
895 TypePrinter.print(CS->getOperand(0)->getType(), Out);
898 WriteAsOperandInternal(Out, CS->getOperand(0), TypePrinter, Machine);
900 for (unsigned i = 1; i < N; i++) {
902 TypePrinter.print(CS->getOperand(i)->getType(), Out);
905 WriteAsOperandInternal(Out, CS->getOperand(i), TypePrinter, Machine);
911 if (CS->getType()->isPacked())
916 if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
917 const Type *ETy = CP->getType()->getElementType();
918 assert(CP->getNumOperands() > 0 &&
919 "Number of operands for a PackedConst must be > 0");
921 TypePrinter.print(ETy, Out);
923 WriteAsOperandInternal(Out, CP->getOperand(0), TypePrinter, Machine);
924 for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
926 TypePrinter.print(ETy, Out);
928 WriteAsOperandInternal(Out, CP->getOperand(i), TypePrinter, Machine);
934 if (isa<ConstantPointerNull>(CV)) {
939 if (isa<UndefValue>(CV)) {
944 if (const MDString *S = dyn_cast<MDString>(CV)) {
946 PrintEscapedString(S->begin(), S->size(), Out);
951 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
952 Out << CE->getOpcodeName();
954 Out << ' ' << getPredicateText(CE->getPredicate());
957 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
958 TypePrinter.print((*OI)->getType(), Out);
960 WriteAsOperandInternal(Out, *OI, TypePrinter, Machine);
961 if (OI+1 != CE->op_end())
965 if (CE->hasIndices()) {
966 const SmallVector<unsigned, 4> &Indices = CE->getIndices();
967 for (unsigned i = 0, e = Indices.size(); i != e; ++i)
968 Out << ", " << Indices[i];
973 TypePrinter.print(CE->getType(), Out);
980 Out << "<placeholder or erroneous Constant>";
984 /// WriteAsOperand - Write the name of the specified value out to the specified
985 /// ostream. This can be useful when you just want to print int %reg126, not
986 /// the whole instruction that generated it.
988 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
989 TypePrinting &TypePrinter,
990 SlotTracker *Machine) {
992 PrintLLVMName(Out, V);
996 const Constant *CV = dyn_cast<Constant>(V);
997 if (CV && !isa<GlobalValue>(CV)) {
998 WriteConstantInt(Out, CV, TypePrinter, Machine);
1002 if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
1004 if (IA->hasSideEffects())
1005 Out << "sideeffect ";
1007 PrintEscapedString(IA->getAsmString(), Out);
1009 PrintEscapedString(IA->getConstraintString(), Out);
1017 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1018 Slot = Machine->getGlobalSlot(GV);
1021 Slot = Machine->getLocalSlot(V);
1024 Machine = createSlotTracker(V);
1026 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1027 Slot = Machine->getGlobalSlot(GV);
1030 Slot = Machine->getLocalSlot(V);
1039 Out << Prefix << Slot;
1044 /// WriteAsOperand - Write the name of the specified value out to the specified
1045 /// ostream. This can be useful when you just want to print int %reg126, not
1046 /// the whole instruction that generated it.
1048 void llvm::WriteAsOperand(std::ostream &Out, const Value *V, bool PrintType,
1049 const Module *Context) {
1050 raw_os_ostream OS(Out);
1051 WriteAsOperand(OS, V, PrintType, Context);
1054 void llvm::WriteAsOperand(raw_ostream &Out, const Value *V, bool PrintType,
1055 const Module *Context) {
1056 if (Context == 0) Context = getModuleFromVal(V);
1058 TypePrinting TypePrinter;
1059 std::vector<const Type*> NumberedTypes;
1060 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, Context);
1062 TypePrinter.print(V->getType(), Out);
1066 WriteAsOperandInternal(Out, V, TypePrinter, 0);
1072 class AssemblyWriter {
1074 SlotTracker &Machine;
1075 const Module *TheModule;
1076 TypePrinting TypePrinter;
1077 AssemblyAnnotationWriter *AnnotationWriter;
1078 std::vector<const Type*> NumberedTypes;
1080 // Each MDNode is assigned unique MetadataIDNo.
1081 std::map<const MDNode *, unsigned> MDNodes;
1082 unsigned MetadataIDNo;
1084 inline AssemblyWriter(raw_ostream &o, SlotTracker &Mac, const Module *M,
1085 AssemblyAnnotationWriter *AAW)
1086 : Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW), MetadataIDNo(0) {
1087 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, M);
1090 void write(const Module *M) { printModule(M); }
1092 void write(const GlobalValue *G) {
1093 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(G))
1095 else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(G))
1097 else if (const Function *F = dyn_cast<Function>(G))
1100 assert(0 && "Unknown global");
1103 void write(const BasicBlock *BB) { printBasicBlock(BB); }
1104 void write(const Instruction *I) { printInstruction(*I); }
1106 void writeOperand(const Value *Op, bool PrintType);
1107 void writeParamOperand(const Value *Operand, Attributes Attrs);
1108 void printMDNode(const MDNode *Node, bool StandAlone);
1110 const Module* getModule() { return TheModule; }
1113 void printModule(const Module *M);
1114 void printTypeSymbolTable(const TypeSymbolTable &ST);
1115 void printGlobal(const GlobalVariable *GV);
1116 void printAlias(const GlobalAlias *GV);
1117 void printFunction(const Function *F);
1118 void printArgument(const Argument *FA, Attributes Attrs);
1119 void printBasicBlock(const BasicBlock *BB);
1120 void printInstruction(const Instruction &I);
1122 // printInfoComment - Print a little comment after the instruction indicating
1123 // which slot it occupies.
1124 void printInfoComment(const Value &V);
1126 } // end of anonymous namespace
1129 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType) {
1131 Out << "<null operand!>";
1134 TypePrinter.print(Operand->getType(), Out);
1137 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1141 void AssemblyWriter::writeParamOperand(const Value *Operand,
1144 Out << "<null operand!>";
1147 TypePrinter.print(Operand->getType(), Out);
1148 // Print parameter attributes list
1149 if (Attrs != Attribute::None)
1150 Out << ' ' << Attribute::getAsString(Attrs);
1152 // Print the operand
1153 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1157 void AssemblyWriter::printModule(const Module *M) {
1158 if (!M->getModuleIdentifier().empty() &&
1159 // Don't print the ID if it will start a new line (which would
1160 // require a comment char before it).
1161 M->getModuleIdentifier().find('\n') == std::string::npos)
1162 Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n";
1164 if (!M->getDataLayout().empty())
1165 Out << "target datalayout = \"" << M->getDataLayout() << "\"\n";
1166 if (!M->getTargetTriple().empty())
1167 Out << "target triple = \"" << M->getTargetTriple() << "\"\n";
1169 if (!M->getModuleInlineAsm().empty()) {
1170 // Split the string into lines, to make it easier to read the .ll file.
1171 std::string Asm = M->getModuleInlineAsm();
1173 size_t NewLine = Asm.find_first_of('\n', CurPos);
1174 while (NewLine != std::string::npos) {
1175 // We found a newline, print the portion of the asm string from the
1176 // last newline up to this newline.
1177 Out << "module asm \"";
1178 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.begin()+NewLine),
1182 NewLine = Asm.find_first_of('\n', CurPos);
1184 Out << "module asm \"";
1185 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.end()), Out);
1189 // Loop over the dependent libraries and emit them.
1190 Module::lib_iterator LI = M->lib_begin();
1191 Module::lib_iterator LE = M->lib_end();
1193 Out << "deplibs = [ ";
1195 Out << '"' << *LI << '"';
1203 // Loop over the symbol table, emitting all id'd types.
1204 printTypeSymbolTable(M->getTypeSymbolTable());
1206 for (Module::const_global_iterator I = M->global_begin(), E = M->global_end();
1210 // Output all aliases.
1211 if (!M->alias_empty()) Out << "\n";
1212 for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
1216 // Output all of the functions.
1217 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
1221 static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) {
1223 case GlobalValue::PrivateLinkage: Out << "private "; break;
1224 case GlobalValue::InternalLinkage: Out << "internal "; break;
1225 case GlobalValue::AvailableExternallyLinkage:
1226 Out << "available_externally ";
1228 case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
1229 case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
1230 case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
1231 case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
1232 case GlobalValue::CommonLinkage: Out << "common "; break;
1233 case GlobalValue::AppendingLinkage: Out << "appending "; break;
1234 case GlobalValue::DLLImportLinkage: Out << "dllimport "; break;
1235 case GlobalValue::DLLExportLinkage: Out << "dllexport "; break;
1236 case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
1237 case GlobalValue::ExternalLinkage: break;
1238 case GlobalValue::GhostLinkage:
1239 LLVM_UNREACHABLE("GhostLinkage not allowed in AsmWriter!");
1244 static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
1247 default: assert(0 && "Invalid visibility style!");
1248 case GlobalValue::DefaultVisibility: break;
1249 case GlobalValue::HiddenVisibility: Out << "hidden "; break;
1250 case GlobalValue::ProtectedVisibility: Out << "protected "; break;
1254 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
1255 if (GV->hasInitializer())
1256 // If GV is initialized using Metadata then separate out metadata
1257 // operands used by the initializer. Note, MDNodes are not cyclic.
1258 if (MDNode *N = dyn_cast<MDNode>(GV->getInitializer())) {
1259 SmallVector<const MDNode *, 4> WorkList;
1260 // Collect MDNodes used by the initializer.
1261 for (MDNode::const_elem_iterator I = N->elem_begin(), E = N->elem_end();
1263 const Value *TV = *I;
1265 if (const MDNode *NN = dyn_cast<MDNode>(TV))
1266 WorkList.push_back(NN);
1269 // Print MDNodes used by the initializer.
1270 while (!WorkList.empty()) {
1271 const MDNode *N = WorkList.back(); WorkList.pop_back();
1272 printMDNode(N, true);
1277 if (GV->hasName()) {
1278 PrintLLVMName(Out, GV);
1282 if (!GV->hasInitializer() && GV->hasExternalLinkage())
1285 PrintLinkage(GV->getLinkage(), Out);
1286 PrintVisibility(GV->getVisibility(), Out);
1288 if (GV->isThreadLocal()) Out << "thread_local ";
1289 if (unsigned AddressSpace = GV->getType()->getAddressSpace())
1290 Out << "addrspace(" << AddressSpace << ") ";
1291 Out << (GV->isConstant() ? "constant " : "global ");
1292 TypePrinter.print(GV->getType()->getElementType(), Out);
1294 if (GV->hasInitializer()) {
1296 if (MDNode *N = dyn_cast<MDNode>(GV->getInitializer()))
1297 printMDNode(N, false);
1299 writeOperand(GV->getInitializer(), false);
1302 if (GV->hasSection())
1303 Out << ", section \"" << GV->getSection() << '"';
1304 if (GV->getAlignment())
1305 Out << ", align " << GV->getAlignment();
1307 printInfoComment(*GV);
1311 void AssemblyWriter::printMDNode(const MDNode *Node,
1313 std::map<const MDNode *, unsigned>::iterator MI = MDNodes.find(Node);
1314 // If this node is already printed then just refer it using its Metadata
1316 if (MI != MDNodes.end()) {
1318 Out << "!" << MI->second;
1323 // Print standalone MDNode.
1325 Out << "!" << MetadataIDNo << " = ";
1326 Out << "constant metadata ";
1330 for (MDNode::const_elem_iterator I = Node->elem_begin(), E = Node->elem_end();
1332 const Value *TV = *I;
1335 else if (const MDNode *N = dyn_cast<MDNode>(TV)) {
1336 TypePrinter.print(N->getType(), Out);
1338 printMDNode(N, StandAlone);
1343 writeOperand(*I, true);
1349 MDNodes[Node] = MetadataIDNo++;
1352 void AssemblyWriter::printAlias(const GlobalAlias *GA) {
1353 // Don't crash when dumping partially built GA
1355 Out << "<<nameless>> = ";
1357 PrintLLVMName(Out, GA);
1360 PrintVisibility(GA->getVisibility(), Out);
1364 PrintLinkage(GA->getLinkage(), Out);
1366 const Constant *Aliasee = GA->getAliasee();
1368 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Aliasee)) {
1369 TypePrinter.print(GV->getType(), Out);
1371 PrintLLVMName(Out, GV);
1372 } else if (const Function *F = dyn_cast<Function>(Aliasee)) {
1373 TypePrinter.print(F->getFunctionType(), Out);
1376 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1377 } else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(Aliasee)) {
1378 TypePrinter.print(GA->getType(), Out);
1380 PrintLLVMName(Out, GA);
1382 const ConstantExpr *CE = cast<ConstantExpr>(Aliasee);
1383 // The only valid GEP is an all zero GEP.
1384 assert((CE->getOpcode() == Instruction::BitCast ||
1385 CE->getOpcode() == Instruction::GetElementPtr) &&
1386 "Unsupported aliasee");
1387 writeOperand(CE, false);
1390 printInfoComment(*GA);
1394 void AssemblyWriter::printTypeSymbolTable(const TypeSymbolTable &ST) {
1395 // Emit all numbered types.
1396 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i) {
1399 // Make sure we print out at least one level of the type structure, so
1400 // that we do not get %2 = type %2
1401 TypePrinter.printAtLeastOneLevel(NumberedTypes[i], Out);
1402 Out << "\t\t; type %" << i << '\n';
1405 // Print the named types.
1406 for (TypeSymbolTable::const_iterator TI = ST.begin(), TE = ST.end();
1409 PrintLLVMName(Out, &TI->first[0], TI->first.size(), LocalPrefix);
1412 // Make sure we print out at least one level of the type structure, so
1413 // that we do not get %FILE = type %FILE
1414 TypePrinter.printAtLeastOneLevel(TI->second, Out);
1419 /// printFunction - Print all aspects of a function.
1421 void AssemblyWriter::printFunction(const Function *F) {
1422 // Print out the return type and name.
1425 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out);
1427 if (F->isDeclaration())
1432 PrintLinkage(F->getLinkage(), Out);
1433 PrintVisibility(F->getVisibility(), Out);
1435 // Print the calling convention.
1436 switch (F->getCallingConv()) {
1437 case CallingConv::C: break; // default
1438 case CallingConv::Fast: Out << "fastcc "; break;
1439 case CallingConv::Cold: Out << "coldcc "; break;
1440 case CallingConv::X86_StdCall: Out << "x86_stdcallcc "; break;
1441 case CallingConv::X86_FastCall: Out << "x86_fastcallcc "; break;
1442 case CallingConv::ARM_APCS: Out << "arm_apcscc "; break;
1443 case CallingConv::ARM_AAPCS: Out << "arm_aapcscc "; break;
1444 case CallingConv::ARM_AAPCS_VFP:Out << "arm_aapcs_vfpcc "; break;
1445 default: Out << "cc" << F->getCallingConv() << " "; break;
1448 const FunctionType *FT = F->getFunctionType();
1449 const AttrListPtr &Attrs = F->getAttributes();
1450 Attributes RetAttrs = Attrs.getRetAttributes();
1451 if (RetAttrs != Attribute::None)
1452 Out << Attribute::getAsString(Attrs.getRetAttributes()) << ' ';
1453 TypePrinter.print(F->getReturnType(), Out);
1455 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1457 Machine.incorporateFunction(F);
1459 // Loop over the arguments, printing them...
1462 if (!F->isDeclaration()) {
1463 // If this isn't a declaration, print the argument names as well.
1464 for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
1466 // Insert commas as we go... the first arg doesn't get a comma
1467 if (I != F->arg_begin()) Out << ", ";
1468 printArgument(I, Attrs.getParamAttributes(Idx));
1472 // Otherwise, print the types from the function type.
1473 for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
1474 // Insert commas as we go... the first arg doesn't get a comma
1478 TypePrinter.print(FT->getParamType(i), Out);
1480 Attributes ArgAttrs = Attrs.getParamAttributes(i+1);
1481 if (ArgAttrs != Attribute::None)
1482 Out << ' ' << Attribute::getAsString(ArgAttrs);
1486 // Finish printing arguments...
1487 if (FT->isVarArg()) {
1488 if (FT->getNumParams()) Out << ", ";
1489 Out << "..."; // Output varargs portion of signature!
1492 Attributes FnAttrs = Attrs.getFnAttributes();
1493 if (FnAttrs != Attribute::None)
1494 Out << ' ' << Attribute::getAsString(Attrs.getFnAttributes());
1495 if (F->hasSection())
1496 Out << " section \"" << F->getSection() << '"';
1497 if (F->getAlignment())
1498 Out << " align " << F->getAlignment();
1500 Out << " gc \"" << F->getGC() << '"';
1501 if (F->isDeclaration()) {
1506 // Output all of its basic blocks... for the function
1507 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
1513 Machine.purgeFunction();
1516 /// printArgument - This member is called for every argument that is passed into
1517 /// the function. Simply print it out
1519 void AssemblyWriter::printArgument(const Argument *Arg,
1522 TypePrinter.print(Arg->getType(), Out);
1524 // Output parameter attributes list
1525 if (Attrs != Attribute::None)
1526 Out << ' ' << Attribute::getAsString(Attrs);
1528 // Output name, if available...
1529 if (Arg->hasName()) {
1531 PrintLLVMName(Out, Arg);
1535 /// printBasicBlock - This member is called for each basic block in a method.
1537 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
1538 if (BB->hasName()) { // Print out the label if it exists...
1540 PrintLLVMName(Out, BB->getNameStart(), BB->getNameLen(), LabelPrefix);
1542 } else if (!BB->use_empty()) { // Don't print block # of no uses...
1543 Out << "\n; <label>:";
1544 int Slot = Machine.getLocalSlot(BB);
1551 if (BB->getParent() == 0)
1552 Out << "\t\t; Error: Block without parent!";
1553 else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
1554 // Output predecessors for the block...
1556 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
1559 Out << " No predecessors!";
1562 writeOperand(*PI, false);
1563 for (++PI; PI != PE; ++PI) {
1565 writeOperand(*PI, false);
1572 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out);
1574 // Output all of the instructions in the basic block...
1575 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
1576 printInstruction(*I);
1578 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out);
1582 /// printInfoComment - Print a little comment after the instruction indicating
1583 /// which slot it occupies.
1585 void AssemblyWriter::printInfoComment(const Value &V) {
1586 if (V.getType() != Type::VoidTy) {
1588 TypePrinter.print(V.getType(), Out);
1591 if (!V.hasName() && !isa<Instruction>(V)) {
1593 if (const GlobalValue *GV = dyn_cast<GlobalValue>(&V))
1594 SlotNum = Machine.getGlobalSlot(GV);
1596 SlotNum = Machine.getLocalSlot(&V);
1600 Out << ':' << SlotNum; // Print out the def slot taken.
1602 Out << " [#uses=" << V.getNumUses() << ']'; // Output # uses
1606 // This member is called for each Instruction in a function..
1607 void AssemblyWriter::printInstruction(const Instruction &I) {
1608 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);
1612 // Print out name if it exists...
1614 PrintLLVMName(Out, &I);
1616 } else if (I.getType() != Type::VoidTy) {
1617 // Print out the def slot taken.
1618 int SlotNum = Machine.getLocalSlot(&I);
1620 Out << "<badref> = ";
1622 Out << '%' << SlotNum << " = ";
1625 // If this is a volatile load or store, print out the volatile marker.
1626 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) ||
1627 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile())) {
1629 } else if (isa<CallInst>(I) && cast<CallInst>(I).isTailCall()) {
1630 // If this is a call, check if it's a tail call.
1634 // Print out the opcode...
1635 Out << I.getOpcodeName();
1637 // Print out the compare instruction predicates
1638 if (const CmpInst *CI = dyn_cast<CmpInst>(&I))
1639 Out << ' ' << getPredicateText(CI->getPredicate());
1641 // Print out the type of the operands...
1642 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
1644 // Special case conditional branches to swizzle the condition out to the front
1645 if (isa<BranchInst>(I) && cast<BranchInst>(I).isConditional()) {
1646 BranchInst &BI(cast<BranchInst>(I));
1648 writeOperand(BI.getCondition(), true);
1650 writeOperand(BI.getSuccessor(0), true);
1652 writeOperand(BI.getSuccessor(1), true);
1654 } else if (isa<SwitchInst>(I)) {
1655 // Special case switch statement to get formatting nice and correct...
1657 writeOperand(Operand , true);
1659 writeOperand(I.getOperand(1), true);
1662 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
1664 writeOperand(I.getOperand(op ), true);
1666 writeOperand(I.getOperand(op+1), true);
1669 } else if (isa<PHINode>(I)) {
1671 TypePrinter.print(I.getType(), Out);
1674 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
1675 if (op) Out << ", ";
1677 writeOperand(I.getOperand(op ), false); Out << ", ";
1678 writeOperand(I.getOperand(op+1), false); Out << " ]";
1680 } else if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(&I)) {
1682 writeOperand(I.getOperand(0), true);
1683 for (const unsigned *i = EVI->idx_begin(), *e = EVI->idx_end(); i != e; ++i)
1685 } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(&I)) {
1687 writeOperand(I.getOperand(0), true); Out << ", ";
1688 writeOperand(I.getOperand(1), true);
1689 for (const unsigned *i = IVI->idx_begin(), *e = IVI->idx_end(); i != e; ++i)
1691 } else if (isa<ReturnInst>(I) && !Operand) {
1693 } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
1694 // Print the calling convention being used.
1695 switch (CI->getCallingConv()) {
1696 case CallingConv::C: break; // default
1697 case CallingConv::Fast: Out << " fastcc"; break;
1698 case CallingConv::Cold: Out << " coldcc"; break;
1699 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1700 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1701 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1702 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1703 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1704 default: Out << " cc" << CI->getCallingConv(); break;
1707 const PointerType *PTy = cast<PointerType>(Operand->getType());
1708 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1709 const Type *RetTy = FTy->getReturnType();
1710 const AttrListPtr &PAL = CI->getAttributes();
1712 if (PAL.getRetAttributes() != Attribute::None)
1713 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1715 // If possible, print out the short form of the call instruction. We can
1716 // only do this if the first argument is a pointer to a nonvararg function,
1717 // and if the return type is not a pointer to a function.
1720 if (!FTy->isVarArg() &&
1721 (!isa<PointerType>(RetTy) ||
1722 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1723 TypePrinter.print(RetTy, Out);
1725 writeOperand(Operand, false);
1727 writeOperand(Operand, true);
1730 for (unsigned op = 1, Eop = I.getNumOperands(); op < Eop; ++op) {
1733 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op));
1736 if (PAL.getFnAttributes() != Attribute::None)
1737 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1738 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
1739 const PointerType *PTy = cast<PointerType>(Operand->getType());
1740 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1741 const Type *RetTy = FTy->getReturnType();
1742 const AttrListPtr &PAL = II->getAttributes();
1744 // Print the calling convention being used.
1745 switch (II->getCallingConv()) {
1746 case CallingConv::C: break; // default
1747 case CallingConv::Fast: Out << " fastcc"; break;
1748 case CallingConv::Cold: Out << " coldcc"; break;
1749 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1750 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1751 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1752 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1753 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1754 default: Out << " cc" << II->getCallingConv(); break;
1757 if (PAL.getRetAttributes() != Attribute::None)
1758 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1760 // If possible, print out the short form of the invoke instruction. We can
1761 // only do this if the first argument is a pointer to a nonvararg function,
1762 // and if the return type is not a pointer to a function.
1765 if (!FTy->isVarArg() &&
1766 (!isa<PointerType>(RetTy) ||
1767 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1768 TypePrinter.print(RetTy, Out);
1770 writeOperand(Operand, false);
1772 writeOperand(Operand, true);
1775 for (unsigned op = 3, Eop = I.getNumOperands(); op < Eop; ++op) {
1778 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op-2));
1782 if (PAL.getFnAttributes() != Attribute::None)
1783 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1785 Out << "\n\t\t\tto ";
1786 writeOperand(II->getNormalDest(), true);
1788 writeOperand(II->getUnwindDest(), true);
1790 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
1792 TypePrinter.print(AI->getType()->getElementType(), Out);
1793 if (AI->isArrayAllocation()) {
1795 writeOperand(AI->getArraySize(), true);
1797 if (AI->getAlignment()) {
1798 Out << ", align " << AI->getAlignment();
1800 } else if (isa<CastInst>(I)) {
1803 writeOperand(Operand, true); // Work with broken code
1806 TypePrinter.print(I.getType(), Out);
1807 } else if (isa<VAArgInst>(I)) {
1810 writeOperand(Operand, true); // Work with broken code
1813 TypePrinter.print(I.getType(), Out);
1814 } else if (Operand) { // Print the normal way.
1816 // PrintAllTypes - Instructions who have operands of all the same type
1817 // omit the type from all but the first operand. If the instruction has
1818 // different type operands (for example br), then they are all printed.
1819 bool PrintAllTypes = false;
1820 const Type *TheType = Operand->getType();
1822 // Select, Store and ShuffleVector always print all types.
1823 if (isa<SelectInst>(I) || isa<StoreInst>(I) || isa<ShuffleVectorInst>(I)
1824 || isa<ReturnInst>(I)) {
1825 PrintAllTypes = true;
1827 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
1828 Operand = I.getOperand(i);
1829 // note that Operand shouldn't be null, but the test helps make dump()
1830 // more tolerant of malformed IR
1831 if (Operand && Operand->getType() != TheType) {
1832 PrintAllTypes = true; // We have differing types! Print them all!
1838 if (!PrintAllTypes) {
1840 TypePrinter.print(TheType, Out);
1844 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
1846 writeOperand(I.getOperand(i), PrintAllTypes);
1850 // Print post operand alignment for load/store
1851 if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) {
1852 Out << ", align " << cast<LoadInst>(I).getAlignment();
1853 } else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) {
1854 Out << ", align " << cast<StoreInst>(I).getAlignment();
1857 printInfoComment(I);
1862 //===----------------------------------------------------------------------===//
1863 // External Interface declarations
1864 //===----------------------------------------------------------------------===//
1866 void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1867 raw_os_ostream OS(o);
1870 void Module::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
1871 SlotTracker SlotTable(this);
1872 AssemblyWriter W(OS, SlotTable, this, AAW);
1876 void Type::print(std::ostream &o) const {
1877 raw_os_ostream OS(o);
1881 void Type::print(raw_ostream &OS) const {
1883 OS << "<null Type>";
1886 TypePrinting().print(this, OS);
1889 void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
1891 OS << "printing a <null> value\n";
1895 if (const Instruction *I = dyn_cast<Instruction>(this)) {
1896 const Function *F = I->getParent() ? I->getParent()->getParent() : 0;
1897 SlotTracker SlotTable(F);
1898 AssemblyWriter W(OS, SlotTable, F ? F->getParent() : 0, AAW);
1900 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(this)) {
1901 SlotTracker SlotTable(BB->getParent());
1902 AssemblyWriter W(OS, SlotTable,
1903 BB->getParent() ? BB->getParent()->getParent() : 0, AAW);
1905 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) {
1906 SlotTracker SlotTable(GV->getParent());
1907 AssemblyWriter W(OS, SlotTable, GV->getParent(), AAW);
1909 } else if (const MDNode *N = dyn_cast<MDNode>(this)) {
1910 TypePrinting TypePrinter;
1911 TypePrinter.print(N->getType(), OS);
1913 // FIXME: Do we need a slot tracker for metadata ?
1914 SlotTracker SlotTable((const Function *)NULL);
1915 AssemblyWriter W(OS, SlotTable, NULL, AAW);
1916 W.printMDNode(N, false);
1917 } else if (const Constant *C = dyn_cast<Constant>(this)) {
1918 TypePrinting TypePrinter;
1919 TypePrinter.print(C->getType(), OS);
1921 WriteConstantInt(OS, C, TypePrinter, 0);
1922 } else if (const Argument *A = dyn_cast<Argument>(this)) {
1923 WriteAsOperand(OS, this, true,
1924 A->getParent() ? A->getParent()->getParent() : 0);
1925 } else if (isa<InlineAsm>(this)) {
1926 WriteAsOperand(OS, this, true, 0);
1928 assert(0 && "Unknown value to print out!");
1932 void Value::print(std::ostream &O, AssemblyAnnotationWriter *AAW) const {
1933 raw_os_ostream OS(O);
1937 // Value::dump - allow easy printing of Values from the debugger.
1938 void Value::dump() const { print(errs()); errs() << '\n'; }
1940 // Type::dump - allow easy printing of Types from the debugger.
1941 // This one uses type names from the given context module
1942 void Type::dump(const Module *Context) const {
1943 WriteTypeSymbolic(errs(), this, Context);
1947 // Type::dump - allow easy printing of Types from the debugger.
1948 void Type::dump() const { dump(0); }
1950 // Module::dump() - Allow printing of Modules from the debugger.
1951 void Module::dump() const { print(errs(), 0); }