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/Operator.h"
27 #include "llvm/Metadata.h"
28 #include "llvm/Module.h"
29 #include "llvm/ValueSymbolTable.h"
30 #include "llvm/TypeSymbolTable.h"
31 #include "llvm/ADT/DenseSet.h"
32 #include "llvm/ADT/StringExtras.h"
33 #include "llvm/ADT/STLExtras.h"
34 #include "llvm/Support/CFG.h"
35 #include "llvm/Support/ErrorHandling.h"
36 #include "llvm/Support/MathExtras.h"
37 #include "llvm/Support/FormattedStream.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 StringRef &Name,
71 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
72 unsigned char C = Name[i];
73 if (isprint(C) && C != '\\' && C != '"')
76 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
87 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
88 /// prefixed with % (if the string only contains simple characters) or is
89 /// surrounded with ""'s (if it has special chars in it). Print it out.
90 static void PrintLLVMName(raw_ostream &OS, const StringRef &Name,
92 assert(Name.data() && "Cannot get empty name!");
94 default: llvm_unreachable("Bad prefix!");
96 case GlobalPrefix: OS << '@'; break;
97 case LabelPrefix: break;
98 case LocalPrefix: OS << '%'; break;
101 // Scan the name to see if it needs quotes first.
102 bool NeedsQuotes = isdigit(Name[0]);
104 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
106 if (!isalnum(C) && C != '-' && C != '.' && C != '_') {
113 // If we didn't need any quotes, just write out the name in one blast.
119 // Okay, we need quotes. Output the quotes and escape any scary characters as
122 PrintEscapedString(Name, OS);
126 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
127 /// prefixed with % (if the string only contains simple characters) or is
128 /// surrounded with ""'s (if it has special chars in it). Print it out.
129 static void PrintLLVMName(raw_ostream &OS, const Value *V) {
130 PrintLLVMName(OS, V->getName(),
131 isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix);
134 //===----------------------------------------------------------------------===//
135 // TypePrinting Class: Type printing machinery
136 //===----------------------------------------------------------------------===//
138 static DenseMap<const Type *, std::string> &getTypeNamesMap(void *M) {
139 return *static_cast<DenseMap<const Type *, std::string>*>(M);
142 void TypePrinting::clear() {
143 getTypeNamesMap(TypeNames).clear();
146 bool TypePrinting::hasTypeName(const Type *Ty) const {
147 return getTypeNamesMap(TypeNames).count(Ty);
150 void TypePrinting::addTypeName(const Type *Ty, const std::string &N) {
151 getTypeNamesMap(TypeNames).insert(std::make_pair(Ty, N));
155 TypePrinting::TypePrinting() {
156 TypeNames = new DenseMap<const Type *, std::string>();
159 TypePrinting::~TypePrinting() {
160 delete &getTypeNamesMap(TypeNames);
163 /// CalcTypeName - Write the specified type to the specified raw_ostream, making
164 /// use of type names or up references to shorten the type name where possible.
165 void TypePrinting::CalcTypeName(const Type *Ty,
166 SmallVectorImpl<const Type *> &TypeStack,
167 raw_ostream &OS, bool IgnoreTopLevelName) {
168 // Check to see if the type is named.
169 if (!IgnoreTopLevelName) {
170 DenseMap<const Type *, std::string> &TM = getTypeNamesMap(TypeNames);
171 DenseMap<const Type *, std::string>::iterator I = TM.find(Ty);
178 // Check to see if the Type is already on the stack...
179 unsigned Slot = 0, CurSize = TypeStack.size();
180 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
182 // This is another base case for the recursion. In this case, we know
183 // that we have looped back to a type that we have previously visited.
184 // Generate the appropriate upreference to handle this.
185 if (Slot < CurSize) {
186 OS << '\\' << unsigned(CurSize-Slot); // Here's the upreference
190 TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
192 switch (Ty->getTypeID()) {
193 case Type::VoidTyID: OS << "void"; break;
194 case Type::FloatTyID: OS << "float"; break;
195 case Type::DoubleTyID: OS << "double"; break;
196 case Type::X86_FP80TyID: OS << "x86_fp80"; break;
197 case Type::FP128TyID: OS << "fp128"; break;
198 case Type::PPC_FP128TyID: OS << "ppc_fp128"; break;
199 case Type::LabelTyID: OS << "label"; break;
200 case Type::MetadataTyID: OS << "metadata"; break;
201 case Type::IntegerTyID:
202 OS << 'i' << cast<IntegerType>(Ty)->getBitWidth();
205 case Type::FunctionTyID: {
206 const FunctionType *FTy = cast<FunctionType>(Ty);
207 CalcTypeName(FTy->getReturnType(), TypeStack, OS);
209 for (FunctionType::param_iterator I = FTy->param_begin(),
210 E = FTy->param_end(); I != E; ++I) {
211 if (I != FTy->param_begin())
213 CalcTypeName(*I, TypeStack, OS);
215 if (FTy->isVarArg()) {
216 if (FTy->getNumParams()) OS << ", ";
222 case Type::StructTyID: {
223 const StructType *STy = cast<StructType>(Ty);
227 for (StructType::element_iterator I = STy->element_begin(),
228 E = STy->element_end(); I != E; ++I) {
229 CalcTypeName(*I, TypeStack, OS);
230 if (next(I) != STy->element_end())
239 case Type::PointerTyID: {
240 const PointerType *PTy = cast<PointerType>(Ty);
241 CalcTypeName(PTy->getElementType(), TypeStack, OS);
242 if (unsigned AddressSpace = PTy->getAddressSpace())
243 OS << " addrspace(" << AddressSpace << ')';
247 case Type::ArrayTyID: {
248 const ArrayType *ATy = cast<ArrayType>(Ty);
249 OS << '[' << ATy->getNumElements() << " x ";
250 CalcTypeName(ATy->getElementType(), TypeStack, OS);
254 case Type::VectorTyID: {
255 const VectorType *PTy = cast<VectorType>(Ty);
256 OS << "<" << PTy->getNumElements() << " x ";
257 CalcTypeName(PTy->getElementType(), TypeStack, OS);
261 case Type::OpaqueTyID:
265 OS << "<unrecognized-type>";
269 TypeStack.pop_back(); // Remove self from stack.
272 /// printTypeInt - The internal guts of printing out a type that has a
273 /// potentially named portion.
275 void TypePrinting::print(const Type *Ty, raw_ostream &OS,
276 bool IgnoreTopLevelName) {
277 // Check to see if the type is named.
278 DenseMap<const Type*, std::string> &TM = getTypeNamesMap(TypeNames);
279 if (!IgnoreTopLevelName) {
280 DenseMap<const Type*, std::string>::iterator I = TM.find(Ty);
287 // Otherwise we have a type that has not been named but is a derived type.
288 // Carefully recurse the type hierarchy to print out any contained symbolic
290 SmallVector<const Type *, 16> TypeStack;
291 std::string TypeName;
293 raw_string_ostream TypeOS(TypeName);
294 CalcTypeName(Ty, TypeStack, TypeOS, IgnoreTopLevelName);
297 // Cache type name for later use.
298 if (!IgnoreTopLevelName)
299 TM.insert(std::make_pair(Ty, TypeOS.str()));
304 // To avoid walking constant expressions multiple times and other IR
305 // objects, we keep several helper maps.
306 DenseSet<const Value*> VisitedConstants;
307 DenseSet<const Type*> VisitedTypes;
310 std::vector<const Type*> &NumberedTypes;
312 TypeFinder(TypePrinting &tp, std::vector<const Type*> &numberedTypes)
313 : TP(tp), NumberedTypes(numberedTypes) {}
315 void Run(const Module &M) {
316 // Get types from the type symbol table. This gets opaque types referened
317 // only through derived named types.
318 const TypeSymbolTable &ST = M.getTypeSymbolTable();
319 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
321 IncorporateType(TI->second);
323 // Get types from global variables.
324 for (Module::const_global_iterator I = M.global_begin(),
325 E = M.global_end(); I != E; ++I) {
326 IncorporateType(I->getType());
327 if (I->hasInitializer())
328 IncorporateValue(I->getInitializer());
331 // Get types from aliases.
332 for (Module::const_alias_iterator I = M.alias_begin(),
333 E = M.alias_end(); I != E; ++I) {
334 IncorporateType(I->getType());
335 IncorporateValue(I->getAliasee());
338 // Get types from functions.
339 for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) {
340 IncorporateType(FI->getType());
342 for (Function::const_iterator BB = FI->begin(), E = FI->end();
344 for (BasicBlock::const_iterator II = BB->begin(),
345 E = BB->end(); II != E; ++II) {
346 const Instruction &I = *II;
347 // Incorporate the type of the instruction and all its operands.
348 IncorporateType(I.getType());
349 for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
351 IncorporateValue(*OI);
357 void IncorporateType(const Type *Ty) {
358 // Check to see if we're already visited this type.
359 if (!VisitedTypes.insert(Ty).second)
362 // If this is a structure or opaque type, add a name for the type.
363 if (((isa<StructType>(Ty) && cast<StructType>(Ty)->getNumElements())
364 || isa<OpaqueType>(Ty)) && !TP.hasTypeName(Ty)) {
365 TP.addTypeName(Ty, "%"+utostr(unsigned(NumberedTypes.size())));
366 NumberedTypes.push_back(Ty);
369 // Recursively walk all contained types.
370 for (Type::subtype_iterator I = Ty->subtype_begin(),
371 E = Ty->subtype_end(); I != E; ++I)
375 /// IncorporateValue - This method is used to walk operand lists finding
376 /// types hiding in constant expressions and other operands that won't be
377 /// walked in other ways. GlobalValues, basic blocks, instructions, and
378 /// inst operands are all explicitly enumerated.
379 void IncorporateValue(const Value *V) {
380 if (V == 0 || !isa<Constant>(V) || isa<GlobalValue>(V)) return;
383 if (!VisitedConstants.insert(V).second)
387 IncorporateType(V->getType());
389 // Look in operands for types.
390 const Constant *C = cast<Constant>(V);
391 for (Constant::const_op_iterator I = C->op_begin(),
392 E = C->op_end(); I != E;++I)
393 IncorporateValue(*I);
396 } // end anonymous namespace
399 /// AddModuleTypesToPrinter - Add all of the symbolic type names for types in
400 /// the specified module to the TypePrinter and all numbered types to it and the
401 /// NumberedTypes table.
402 static void AddModuleTypesToPrinter(TypePrinting &TP,
403 std::vector<const Type*> &NumberedTypes,
407 // If the module has a symbol table, take all global types and stuff their
408 // names into the TypeNames map.
409 const TypeSymbolTable &ST = M->getTypeSymbolTable();
410 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
412 const Type *Ty = cast<Type>(TI->second);
414 // As a heuristic, don't insert pointer to primitive types, because
415 // they are used too often to have a single useful name.
416 if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
417 const Type *PETy = PTy->getElementType();
418 if ((PETy->isPrimitiveType() || PETy->isInteger()) &&
419 !isa<OpaqueType>(PETy))
423 // Likewise don't insert primitives either.
424 if (Ty->isInteger() || Ty->isPrimitiveType())
427 // Get the name as a string and insert it into TypeNames.
429 raw_string_ostream NameROS(NameStr);
430 formatted_raw_ostream NameOS(NameROS);
431 PrintLLVMName(NameOS, TI->first, LocalPrefix);
433 TP.addTypeName(Ty, NameStr);
436 // Walk the entire module to find references to unnamed structure and opaque
437 // types. This is required for correctness by opaque types (because multiple
438 // uses of an unnamed opaque type needs to be referred to by the same ID) and
439 // it shrinks complex recursive structure types substantially in some cases.
440 TypeFinder(TP, NumberedTypes).Run(*M);
444 /// WriteTypeSymbolic - This attempts to write the specified type as a symbolic
445 /// type, iff there is an entry in the modules symbol table for the specified
446 /// type or one of it's component types.
448 void llvm::WriteTypeSymbolic(raw_ostream &OS, const Type *Ty, const Module *M) {
449 TypePrinting Printer;
450 std::vector<const Type*> NumberedTypes;
451 AddModuleTypesToPrinter(Printer, NumberedTypes, M);
452 Printer.print(Ty, OS);
455 //===----------------------------------------------------------------------===//
456 // SlotTracker Class: Enumerate slot numbers for unnamed values
457 //===----------------------------------------------------------------------===//
461 /// This class provides computation of slot numbers for LLVM Assembly writing.
465 /// ValueMap - A mapping of Values to slot numbers.
466 typedef DenseMap<const Value*, unsigned> ValueMap;
469 /// TheModule - The module for which we are holding slot numbers.
470 const Module* TheModule;
472 /// TheFunction - The function for which we are holding slot numbers.
473 const Function* TheFunction;
474 bool FunctionProcessed;
476 /// TheMDNode - The MDNode for which we are holding slot numbers.
477 const MDNode *TheMDNode;
479 /// TheNamedMDNode - The MDNode for which we are holding slot numbers.
480 const NamedMDNode *TheNamedMDNode;
482 /// mMap - The TypePlanes map for the module level data.
486 /// fMap - The TypePlanes map for the function level data.
490 /// mdnMap - Map for MDNodes.
494 /// Construct from a module
495 explicit SlotTracker(const Module *M);
496 /// Construct from a function, starting out in incorp state.
497 explicit SlotTracker(const Function *F);
498 /// Construct from a mdnode.
499 explicit SlotTracker(const MDNode *N);
500 /// Construct from a named mdnode.
501 explicit SlotTracker(const NamedMDNode *N);
503 /// Return the slot number of the specified value in it's type
504 /// plane. If something is not in the SlotTracker, return -1.
505 int getLocalSlot(const Value *V);
506 int getGlobalSlot(const GlobalValue *V);
507 int getMetadataSlot(const MDNode *N);
509 /// If you'd like to deal with a function instead of just a module, use
510 /// this method to get its data into the SlotTracker.
511 void incorporateFunction(const Function *F) {
513 FunctionProcessed = false;
516 /// After calling incorporateFunction, use this method to remove the
517 /// most recently incorporated function from the SlotTracker. This
518 /// will reset the state of the machine back to just the module contents.
519 void purgeFunction();
521 /// MDNode map iterators.
522 ValueMap::iterator mdnBegin() { return mdnMap.begin(); }
523 ValueMap::iterator mdnEnd() { return mdnMap.end(); }
524 unsigned mdnSize() { return mdnMap.size(); }
526 /// This function does the actual initialization.
527 inline void initialize();
529 // Implementation Details
531 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
532 void CreateModuleSlot(const GlobalValue *V);
534 /// CreateMetadataSlot - Insert the specified MDNode* into the slot table.
535 void CreateMetadataSlot(const MDNode *N);
537 /// CreateFunctionSlot - Insert the specified Value* into the slot table.
538 void CreateFunctionSlot(const Value *V);
540 /// Add all of the module level global variables (and their initializers)
541 /// and function declarations, but not the contents of those functions.
542 void processModule();
544 /// Add all of the functions arguments, basic blocks, and instructions.
545 void processFunction();
547 /// Add all MDNode operands.
548 void processMDNode();
550 /// Add all MDNode operands.
551 void processNamedMDNode();
553 SlotTracker(const SlotTracker &); // DO NOT IMPLEMENT
554 void operator=(const SlotTracker &); // DO NOT IMPLEMENT
557 } // end anonymous namespace
560 static SlotTracker *createSlotTracker(const Value *V) {
561 if (const Argument *FA = dyn_cast<Argument>(V))
562 return new SlotTracker(FA->getParent());
564 if (const Instruction *I = dyn_cast<Instruction>(V))
565 return new SlotTracker(I->getParent()->getParent());
567 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
568 return new SlotTracker(BB->getParent());
570 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
571 return new SlotTracker(GV->getParent());
573 if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
574 return new SlotTracker(GA->getParent());
576 if (const Function *Func = dyn_cast<Function>(V))
577 return new SlotTracker(Func);
583 #define ST_DEBUG(X) errs() << X
588 // Module level constructor. Causes the contents of the Module (sans functions)
589 // to be added to the slot table.
590 SlotTracker::SlotTracker(const Module *M)
591 : TheModule(M), TheFunction(0), FunctionProcessed(false), TheMDNode(0),
592 TheNamedMDNode(0), mNext(0), fNext(0), mdnNext(0) {
595 // Function level constructor. Causes the contents of the Module and the one
596 // function provided to be added to the slot table.
597 SlotTracker::SlotTracker(const Function *F)
598 : TheModule(F ? F->getParent() : 0), TheFunction(F), FunctionProcessed(false),
599 TheMDNode(0), TheNamedMDNode(0), mNext(0), fNext(0), mdnNext(0) {
602 // Constructor to handle single MDNode.
603 SlotTracker::SlotTracker(const MDNode *C)
604 : TheModule(0), TheFunction(0), FunctionProcessed(false), TheMDNode(C),
605 TheNamedMDNode(0), mNext(0), fNext(0), mdnNext(0) {
608 // Constructor to handle single NamedMDNode.
609 SlotTracker::SlotTracker(const NamedMDNode *N)
610 : TheModule(0), TheFunction(0), FunctionProcessed(false), TheMDNode(0),
611 TheNamedMDNode(N), mNext(0), fNext(0), mdnNext(0) {
614 inline void SlotTracker::initialize() {
617 TheModule = 0; ///< Prevent re-processing next time we're called.
620 if (TheFunction && !FunctionProcessed)
627 processNamedMDNode();
630 // Iterate through all the global variables, functions, and global
631 // variable initializers and create slots for them.
632 void SlotTracker::processModule() {
633 ST_DEBUG("begin processModule!\n");
635 // Add all of the unnamed global variables to the value table.
636 for (Module::const_global_iterator I = TheModule->global_begin(),
637 E = TheModule->global_end(); I != E; ++I) {
640 if (I->hasInitializer()) {
641 if (MDNode *N = dyn_cast<MDNode>(I->getInitializer()))
642 CreateMetadataSlot(N);
646 // Add metadata used by named metadata.
647 for (Module::const_named_metadata_iterator
648 I = TheModule->named_metadata_begin(),
649 E = TheModule->named_metadata_end(); I != E; ++I) {
650 const NamedMDNode *NMD = I;
651 for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
652 MDNode *MD = dyn_cast_or_null<MDNode>(NMD->getElement(i));
654 CreateMetadataSlot(MD);
658 // Add all the unnamed functions to the table.
659 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
664 ST_DEBUG("end processModule!\n");
667 // Process the arguments, basic blocks, and instructions of a function.
668 void SlotTracker::processFunction() {
669 ST_DEBUG("begin processFunction!\n");
672 // Add all the function arguments with no names.
673 for(Function::const_arg_iterator AI = TheFunction->arg_begin(),
674 AE = TheFunction->arg_end(); AI != AE; ++AI)
676 CreateFunctionSlot(AI);
678 ST_DEBUG("Inserting Instructions:\n");
680 // Add all of the basic blocks and instructions with no names.
681 for (Function::const_iterator BB = TheFunction->begin(),
682 E = TheFunction->end(); BB != E; ++BB) {
684 CreateFunctionSlot(BB);
685 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E;
687 if (I->getType() != Type::VoidTy && !I->hasName())
688 CreateFunctionSlot(I);
689 for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
690 if (MDNode *N = dyn_cast<MDNode>(I->getOperand(i)))
691 CreateMetadataSlot(N);
695 FunctionProcessed = true;
697 ST_DEBUG("end processFunction!\n");
700 /// processMDNode - Process TheMDNode.
701 void SlotTracker::processMDNode() {
702 ST_DEBUG("begin processMDNode!\n");
704 CreateMetadataSlot(TheMDNode);
706 ST_DEBUG("end processMDNode!\n");
709 /// processNamedMDNode - Process TheNamedMDNode.
710 void SlotTracker::processNamedMDNode() {
711 ST_DEBUG("begin processNamedMDNode!\n");
713 for (unsigned i = 0, e = TheNamedMDNode->getNumElements(); i != e; ++i) {
714 MDNode *MD = dyn_cast_or_null<MDNode>(TheNamedMDNode->getElement(i));
716 CreateMetadataSlot(MD);
719 ST_DEBUG("end processNamedMDNode!\n");
722 /// Clean up after incorporating a function. This is the only way to get out of
723 /// the function incorporation state that affects get*Slot/Create*Slot. Function
724 /// incorporation state is indicated by TheFunction != 0.
725 void SlotTracker::purgeFunction() {
726 ST_DEBUG("begin purgeFunction!\n");
727 fMap.clear(); // Simply discard the function level map
729 FunctionProcessed = false;
730 ST_DEBUG("end purgeFunction!\n");
733 /// getGlobalSlot - Get the slot number of a global value.
734 int SlotTracker::getGlobalSlot(const GlobalValue *V) {
735 // Check for uninitialized state and do lazy initialization.
738 // Find the type plane in the module map
739 ValueMap::iterator MI = mMap.find(V);
740 return MI == mMap.end() ? -1 : (int)MI->second;
743 /// getGlobalSlot - Get the slot number of a MDNode.
744 int SlotTracker::getMetadataSlot(const MDNode *N) {
745 // Check for uninitialized state and do lazy initialization.
748 // Find the type plane in the module map
749 ValueMap::iterator MI = mdnMap.find(N);
750 return MI == mdnMap.end() ? -1 : (int)MI->second;
754 /// getLocalSlot - Get the slot number for a value that is local to a function.
755 int SlotTracker::getLocalSlot(const Value *V) {
756 assert(!isa<Constant>(V) && "Can't get a constant or global slot with this!");
758 // Check for uninitialized state and do lazy initialization.
761 ValueMap::iterator FI = fMap.find(V);
762 return FI == fMap.end() ? -1 : (int)FI->second;
766 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
767 void SlotTracker::CreateModuleSlot(const GlobalValue *V) {
768 assert(V && "Can't insert a null Value into SlotTracker!");
769 assert(V->getType() != Type::VoidTy && "Doesn't need a slot!");
770 assert(!V->hasName() && "Doesn't need a slot!");
772 unsigned DestSlot = mNext++;
775 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
777 // G = Global, F = Function, A = Alias, o = other
778 ST_DEBUG((isa<GlobalVariable>(V) ? 'G' :
779 (isa<Function>(V) ? 'F' :
780 (isa<GlobalAlias>(V) ? 'A' : 'o'))) << "]\n");
783 /// CreateSlot - Create a new slot for the specified value if it has no name.
784 void SlotTracker::CreateFunctionSlot(const Value *V) {
785 assert(V->getType() != Type::VoidTy && !V->hasName() &&
786 "Doesn't need a slot!");
788 unsigned DestSlot = fNext++;
791 // G = Global, F = Function, o = other
792 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
793 DestSlot << " [o]\n");
796 /// CreateModuleSlot - Insert the specified MDNode* into the slot table.
797 void SlotTracker::CreateMetadataSlot(const MDNode *N) {
798 assert(N && "Can't insert a null Value into SlotTracker!");
800 ValueMap::iterator I = mdnMap.find(N);
801 if (I != mdnMap.end())
804 unsigned DestSlot = mdnNext++;
805 mdnMap[N] = DestSlot;
807 for (MDNode::const_elem_iterator MDI = N->elem_begin(),
808 MDE = N->elem_end(); MDI != MDE; ++MDI) {
809 const Value *TV = *MDI;
811 if (const MDNode *N2 = dyn_cast<MDNode>(TV))
812 CreateMetadataSlot(N2);
816 //===----------------------------------------------------------------------===//
817 // AsmWriter Implementation
818 //===----------------------------------------------------------------------===//
820 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
821 TypePrinting &TypePrinter,
822 SlotTracker *Machine);
826 static const char *getPredicateText(unsigned predicate) {
827 const char * pred = "unknown";
829 case FCmpInst::FCMP_FALSE: pred = "false"; break;
830 case FCmpInst::FCMP_OEQ: pred = "oeq"; break;
831 case FCmpInst::FCMP_OGT: pred = "ogt"; break;
832 case FCmpInst::FCMP_OGE: pred = "oge"; break;
833 case FCmpInst::FCMP_OLT: pred = "olt"; break;
834 case FCmpInst::FCMP_OLE: pred = "ole"; break;
835 case FCmpInst::FCMP_ONE: pred = "one"; break;
836 case FCmpInst::FCMP_ORD: pred = "ord"; break;
837 case FCmpInst::FCMP_UNO: pred = "uno"; break;
838 case FCmpInst::FCMP_UEQ: pred = "ueq"; break;
839 case FCmpInst::FCMP_UGT: pred = "ugt"; break;
840 case FCmpInst::FCMP_UGE: pred = "uge"; break;
841 case FCmpInst::FCMP_ULT: pred = "ult"; break;
842 case FCmpInst::FCMP_ULE: pred = "ule"; break;
843 case FCmpInst::FCMP_UNE: pred = "une"; break;
844 case FCmpInst::FCMP_TRUE: pred = "true"; break;
845 case ICmpInst::ICMP_EQ: pred = "eq"; break;
846 case ICmpInst::ICMP_NE: pred = "ne"; break;
847 case ICmpInst::ICMP_SGT: pred = "sgt"; break;
848 case ICmpInst::ICMP_SGE: pred = "sge"; break;
849 case ICmpInst::ICMP_SLT: pred = "slt"; break;
850 case ICmpInst::ICMP_SLE: pred = "sle"; break;
851 case ICmpInst::ICMP_UGT: pred = "ugt"; break;
852 case ICmpInst::ICMP_UGE: pred = "uge"; break;
853 case ICmpInst::ICMP_ULT: pred = "ult"; break;
854 case ICmpInst::ICMP_ULE: pred = "ule"; break;
859 static void WriteMDNodes(formatted_raw_ostream &Out, TypePrinting &TypePrinter,
860 SlotTracker &Machine) {
861 SmallVector<const MDNode *, 16> Nodes;
862 Nodes.resize(Machine.mdnSize());
863 for (SlotTracker::ValueMap::iterator I =
864 Machine.mdnBegin(), E = Machine.mdnEnd(); I != E; ++I)
865 Nodes[I->second] = cast<MDNode>(I->first);
867 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
868 Out << '!' << i << " = metadata ";
869 const MDNode *Node = Nodes[i];
871 for (MDNode::const_elem_iterator NI = Node->elem_begin(),
872 NE = Node->elem_end(); NI != NE;) {
873 const Value *V = *NI;
876 else if (const MDNode *N = dyn_cast<MDNode>(V)) {
878 Out << '!' << Machine.getMetadataSlot(N);
881 TypePrinter.print((*NI)->getType(), Out);
883 WriteAsOperandInternal(Out, *NI, TypePrinter, &Machine);
892 static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
893 if (const OverflowingBinaryOperator *OBO =
894 dyn_cast<OverflowingBinaryOperator>(U)) {
895 if (OBO->hasNoUnsignedOverflow())
897 if (OBO->hasNoSignedOverflow())
899 } else if (const SDivOperator *Div = dyn_cast<SDivOperator>(U)) {
902 } else if (const GEPOperator *GEP = dyn_cast<GEPOperator>(U)) {
903 if (GEP->isInBounds())
908 static void WriteConstantInt(raw_ostream &Out, const Constant *CV,
909 TypePrinting &TypePrinter, SlotTracker *Machine) {
910 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
911 if (CI->getType() == Type::Int1Ty) {
912 Out << (CI->getZExtValue() ? "true" : "false");
915 Out << CI->getValue();
919 if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
920 if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble ||
921 &CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle) {
922 // We would like to output the FP constant value in exponential notation,
923 // but we cannot do this if doing so will lose precision. Check here to
924 // make sure that we only output it in exponential format if we can parse
925 // the value back and get the same value.
928 bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble;
929 double Val = isDouble ? CFP->getValueAPF().convertToDouble() :
930 CFP->getValueAPF().convertToFloat();
931 std::string StrVal = ftostr(CFP->getValueAPF());
933 // Check to make sure that the stringized number is not some string like
934 // "Inf" or NaN, that atof will accept, but the lexer will not. Check
935 // that the string matches the "[-+]?[0-9]" regex.
937 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
938 ((StrVal[0] == '-' || StrVal[0] == '+') &&
939 (StrVal[1] >= '0' && StrVal[1] <= '9'))) {
940 // Reparse stringized version!
941 if (atof(StrVal.c_str()) == Val) {
946 // Otherwise we could not reparse it to exactly the same value, so we must
947 // output the string in hexadecimal format! Note that loading and storing
948 // floating point types changes the bits of NaNs on some hosts, notably
949 // x86, so we must not use these types.
950 assert(sizeof(double) == sizeof(uint64_t) &&
951 "assuming that double is 64 bits!");
953 APFloat apf = CFP->getValueAPF();
954 // Floats are represented in ASCII IR as double, convert.
956 apf.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
959 utohex_buffer(uint64_t(apf.bitcastToAPInt().getZExtValue()),
964 // Some form of long double. These appear as a magic letter identifying
965 // the type, then a fixed number of hex digits.
967 if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) {
969 // api needed to prevent premature destruction
970 APInt api = CFP->getValueAPF().bitcastToAPInt();
971 const uint64_t* p = api.getRawData();
972 uint64_t word = p[1];
974 int width = api.getBitWidth();
975 for (int j=0; j<width; j+=4, shiftcount-=4) {
976 unsigned int nibble = (word>>shiftcount) & 15;
978 Out << (unsigned char)(nibble + '0');
980 Out << (unsigned char)(nibble - 10 + 'A');
981 if (shiftcount == 0 && j+4 < width) {
985 shiftcount = width-j-4;
989 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad)
991 else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble)
994 llvm_unreachable("Unsupported floating point type");
995 // api needed to prevent premature destruction
996 APInt api = CFP->getValueAPF().bitcastToAPInt();
997 const uint64_t* p = api.getRawData();
1000 int width = api.getBitWidth();
1001 for (int j=0; j<width; j+=4, shiftcount-=4) {
1002 unsigned int nibble = (word>>shiftcount) & 15;
1004 Out << (unsigned char)(nibble + '0');
1006 Out << (unsigned char)(nibble - 10 + 'A');
1007 if (shiftcount == 0 && j+4 < width) {
1011 shiftcount = width-j-4;
1017 if (isa<ConstantAggregateZero>(CV)) {
1018 Out << "zeroinitializer";
1022 if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
1023 // As a special case, print the array as a string if it is an array of
1024 // i8 with ConstantInt values.
1026 const Type *ETy = CA->getType()->getElementType();
1027 if (CA->isString()) {
1029 PrintEscapedString(CA->getAsString(), Out);
1031 } else { // Cannot output in string format...
1033 if (CA->getNumOperands()) {
1034 TypePrinter.print(ETy, Out);
1036 WriteAsOperandInternal(Out, CA->getOperand(0),
1037 TypePrinter, Machine);
1038 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
1040 TypePrinter.print(ETy, Out);
1042 WriteAsOperandInternal(Out, CA->getOperand(i), TypePrinter, Machine);
1050 if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
1051 if (CS->getType()->isPacked())
1054 unsigned N = CS->getNumOperands();
1057 TypePrinter.print(CS->getOperand(0)->getType(), Out);
1060 WriteAsOperandInternal(Out, CS->getOperand(0), TypePrinter, Machine);
1062 for (unsigned i = 1; i < N; i++) {
1064 TypePrinter.print(CS->getOperand(i)->getType(), Out);
1067 WriteAsOperandInternal(Out, CS->getOperand(i), TypePrinter, Machine);
1073 if (CS->getType()->isPacked())
1078 if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1079 const Type *ETy = CP->getType()->getElementType();
1080 assert(CP->getNumOperands() > 0 &&
1081 "Number of operands for a PackedConst must be > 0");
1083 TypePrinter.print(ETy, Out);
1085 WriteAsOperandInternal(Out, CP->getOperand(0), TypePrinter, Machine);
1086 for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
1088 TypePrinter.print(ETy, Out);
1090 WriteAsOperandInternal(Out, CP->getOperand(i), TypePrinter, Machine);
1096 if (isa<ConstantPointerNull>(CV)) {
1101 if (isa<UndefValue>(CV)) {
1106 if (const MDNode *Node = dyn_cast<MDNode>(CV)) {
1107 Out << "!" << Machine->getMetadataSlot(Node);
1111 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
1112 Out << CE->getOpcodeName();
1113 WriteOptimizationInfo(Out, CE);
1114 if (CE->isCompare())
1115 Out << ' ' << getPredicateText(CE->getPredicate());
1118 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
1119 TypePrinter.print((*OI)->getType(), Out);
1121 WriteAsOperandInternal(Out, *OI, TypePrinter, Machine);
1122 if (OI+1 != CE->op_end())
1126 if (CE->hasIndices()) {
1127 const SmallVector<unsigned, 4> &Indices = CE->getIndices();
1128 for (unsigned i = 0, e = Indices.size(); i != e; ++i)
1129 Out << ", " << Indices[i];
1134 TypePrinter.print(CE->getType(), Out);
1141 Out << "<placeholder or erroneous Constant>";
1145 /// WriteAsOperand - Write the name of the specified value out to the specified
1146 /// ostream. This can be useful when you just want to print int %reg126, not
1147 /// the whole instruction that generated it.
1149 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
1150 TypePrinting &TypePrinter,
1151 SlotTracker *Machine) {
1153 PrintLLVMName(Out, V);
1157 const Constant *CV = dyn_cast<Constant>(V);
1158 if (CV && !isa<GlobalValue>(CV)) {
1159 WriteConstantInt(Out, CV, TypePrinter, Machine);
1163 if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
1165 if (IA->hasSideEffects())
1166 Out << "sideeffect ";
1168 PrintEscapedString(IA->getAsmString(), Out);
1170 PrintEscapedString(IA->getConstraintString(), Out);
1175 if (const MDNode *N = dyn_cast<MDNode>(V)) {
1176 Out << '!' << Machine->getMetadataSlot(N);
1180 if (const MDString *MDS = dyn_cast<MDString>(V)) {
1182 PrintEscapedString(MDS->getString(), Out);
1190 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1191 Slot = Machine->getGlobalSlot(GV);
1194 Slot = Machine->getLocalSlot(V);
1197 Machine = createSlotTracker(V);
1199 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1200 Slot = Machine->getGlobalSlot(GV);
1203 Slot = Machine->getLocalSlot(V);
1212 Out << Prefix << Slot;
1217 /// WriteAsOperand - Write the name of the specified value out to the specified
1218 /// ostream. This can be useful when you just want to print int %reg126, not
1219 /// the whole instruction that generated it.
1221 void llvm::WriteAsOperand(std::ostream &Out, const Value *V, bool PrintType,
1222 const Module *Context) {
1223 raw_os_ostream OS(Out);
1224 WriteAsOperand(OS, V, PrintType, Context);
1227 void llvm::WriteAsOperand(raw_ostream &Out, const Value *V,
1228 bool PrintType, const Module *Context) {
1229 if (Context == 0) Context = getModuleFromVal(V);
1231 TypePrinting TypePrinter;
1232 std::vector<const Type*> NumberedTypes;
1233 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, Context);
1235 TypePrinter.print(V->getType(), Out);
1239 WriteAsOperandInternal(Out, V, TypePrinter, 0);
1244 class AssemblyWriter {
1245 formatted_raw_ostream &Out;
1246 SlotTracker &Machine;
1247 const Module *TheModule;
1248 TypePrinting TypePrinter;
1249 AssemblyAnnotationWriter *AnnotationWriter;
1250 std::vector<const Type*> NumberedTypes;
1252 // Each MDNode is assigned unique MetadataIDNo.
1253 std::map<const MDNode *, unsigned> MDNodes;
1254 unsigned MetadataIDNo;
1256 inline AssemblyWriter(formatted_raw_ostream &o, SlotTracker &Mac,
1258 AssemblyAnnotationWriter *AAW)
1259 : Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW), MetadataIDNo(0) {
1260 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, M);
1263 void write(const Module *M) { printModule(M); }
1265 void write(const GlobalValue *G) {
1266 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(G))
1268 else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(G))
1270 else if (const Function *F = dyn_cast<Function>(G))
1273 llvm_unreachable("Unknown global");
1276 void write(const BasicBlock *BB) { printBasicBlock(BB); }
1277 void write(const Instruction *I) { printInstruction(*I); }
1279 void writeOperand(const Value *Op, bool PrintType);
1280 void writeParamOperand(const Value *Operand, Attributes Attrs);
1282 const Module* getModule() { return TheModule; }
1285 void printModule(const Module *M);
1286 void printTypeSymbolTable(const TypeSymbolTable &ST);
1287 void printGlobal(const GlobalVariable *GV);
1288 void printAlias(const GlobalAlias *GV);
1289 void printFunction(const Function *F);
1290 void printArgument(const Argument *FA, Attributes Attrs);
1291 void printBasicBlock(const BasicBlock *BB);
1292 void printInstruction(const Instruction &I);
1294 // printInfoComment - Print a little comment after the instruction indicating
1295 // which slot it occupies.
1296 void printInfoComment(const Value &V);
1298 } // end of anonymous namespace
1301 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType) {
1303 Out << "<null operand!>";
1306 TypePrinter.print(Operand->getType(), Out);
1309 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1313 void AssemblyWriter::writeParamOperand(const Value *Operand,
1316 Out << "<null operand!>";
1319 TypePrinter.print(Operand->getType(), Out);
1320 // Print parameter attributes list
1321 if (Attrs != Attribute::None)
1322 Out << ' ' << Attribute::getAsString(Attrs);
1324 // Print the operand
1325 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1329 void AssemblyWriter::printModule(const Module *M) {
1330 if (!M->getModuleIdentifier().empty() &&
1331 // Don't print the ID if it will start a new line (which would
1332 // require a comment char before it).
1333 M->getModuleIdentifier().find('\n') == std::string::npos)
1334 Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n";
1336 if (!M->getDataLayout().empty())
1337 Out << "target datalayout = \"" << M->getDataLayout() << "\"\n";
1338 if (!M->getTargetTriple().empty())
1339 Out << "target triple = \"" << M->getTargetTriple() << "\"\n";
1341 if (!M->getModuleInlineAsm().empty()) {
1342 // Split the string into lines, to make it easier to read the .ll file.
1343 std::string Asm = M->getModuleInlineAsm();
1345 size_t NewLine = Asm.find_first_of('\n', CurPos);
1346 while (NewLine != std::string::npos) {
1347 // We found a newline, print the portion of the asm string from the
1348 // last newline up to this newline.
1349 Out << "module asm \"";
1350 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.begin()+NewLine),
1354 NewLine = Asm.find_first_of('\n', CurPos);
1356 Out << "module asm \"";
1357 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.end()), Out);
1361 // Loop over the dependent libraries and emit them.
1362 Module::lib_iterator LI = M->lib_begin();
1363 Module::lib_iterator LE = M->lib_end();
1365 Out << "deplibs = [ ";
1367 Out << '"' << *LI << '"';
1375 // Loop over the symbol table, emitting all id'd types.
1376 printTypeSymbolTable(M->getTypeSymbolTable());
1378 for (Module::const_global_iterator I = M->global_begin(), E = M->global_end();
1382 // Output all aliases.
1383 if (!M->alias_empty()) Out << "\n";
1384 for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
1388 // Output all of the functions.
1389 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
1392 // Output named metadata.
1393 for (Module::const_named_metadata_iterator I = M->named_metadata_begin(),
1394 E = M->named_metadata_end(); I != E; ++I) {
1395 const NamedMDNode *NMD = I;
1396 Out << "!" << NMD->getName() << " = !{";
1397 for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
1399 MDNode *MD = dyn_cast_or_null<MDNode>(NMD->getElement(i));
1400 Out << '!' << Machine.getMetadataSlot(MD);
1406 WriteMDNodes(Out, TypePrinter, Machine);
1409 static void PrintLinkage(GlobalValue::LinkageTypes LT,
1410 formatted_raw_ostream &Out) {
1412 case GlobalValue::ExternalLinkage: break;
1413 case GlobalValue::PrivateLinkage: Out << "private "; break;
1414 case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break;
1415 case GlobalValue::InternalLinkage: Out << "internal "; break;
1416 case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
1417 case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
1418 case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
1419 case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
1420 case GlobalValue::CommonLinkage: Out << "common "; break;
1421 case GlobalValue::AppendingLinkage: Out << "appending "; break;
1422 case GlobalValue::DLLImportLinkage: Out << "dllimport "; break;
1423 case GlobalValue::DLLExportLinkage: Out << "dllexport "; break;
1424 case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
1425 case GlobalValue::AvailableExternallyLinkage:
1426 Out << "available_externally ";
1428 case GlobalValue::GhostLinkage:
1429 llvm_unreachable("GhostLinkage not allowed in AsmWriter!");
1434 static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
1435 formatted_raw_ostream &Out) {
1437 default: llvm_unreachable("Invalid visibility style!");
1438 case GlobalValue::DefaultVisibility: break;
1439 case GlobalValue::HiddenVisibility: Out << "hidden "; break;
1440 case GlobalValue::ProtectedVisibility: Out << "protected "; break;
1444 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
1445 if (GV->hasName()) {
1446 PrintLLVMName(Out, GV);
1450 if (!GV->hasInitializer() && GV->hasExternalLinkage())
1453 PrintLinkage(GV->getLinkage(), Out);
1454 PrintVisibility(GV->getVisibility(), Out);
1456 if (GV->isThreadLocal()) Out << "thread_local ";
1457 if (unsigned AddressSpace = GV->getType()->getAddressSpace())
1458 Out << "addrspace(" << AddressSpace << ") ";
1459 Out << (GV->isConstant() ? "constant " : "global ");
1460 TypePrinter.print(GV->getType()->getElementType(), Out);
1462 if (GV->hasInitializer()) {
1464 writeOperand(GV->getInitializer(), false);
1467 if (GV->hasSection())
1468 Out << ", section \"" << GV->getSection() << '"';
1469 if (GV->getAlignment())
1470 Out << ", align " << GV->getAlignment();
1472 printInfoComment(*GV);
1476 void AssemblyWriter::printAlias(const GlobalAlias *GA) {
1477 // Don't crash when dumping partially built GA
1479 Out << "<<nameless>> = ";
1481 PrintLLVMName(Out, GA);
1484 PrintVisibility(GA->getVisibility(), Out);
1488 PrintLinkage(GA->getLinkage(), Out);
1490 const Constant *Aliasee = GA->getAliasee();
1492 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Aliasee)) {
1493 TypePrinter.print(GV->getType(), Out);
1495 PrintLLVMName(Out, GV);
1496 } else if (const Function *F = dyn_cast<Function>(Aliasee)) {
1497 TypePrinter.print(F->getFunctionType(), Out);
1500 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1501 } else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(Aliasee)) {
1502 TypePrinter.print(GA->getType(), Out);
1504 PrintLLVMName(Out, GA);
1506 const ConstantExpr *CE = cast<ConstantExpr>(Aliasee);
1507 // The only valid GEP is an all zero GEP.
1508 assert((CE->getOpcode() == Instruction::BitCast ||
1509 CE->getOpcode() == Instruction::GetElementPtr) &&
1510 "Unsupported aliasee");
1511 writeOperand(CE, false);
1514 printInfoComment(*GA);
1518 void AssemblyWriter::printTypeSymbolTable(const TypeSymbolTable &ST) {
1519 // Emit all numbered types.
1520 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i) {
1523 // Make sure we print out at least one level of the type structure, so
1524 // that we do not get %2 = type %2
1525 TypePrinter.printAtLeastOneLevel(NumberedTypes[i], Out);
1526 Out.PadToColumn(50);
1527 Out << "; type %" << i << '\n';
1530 // Print the named types.
1531 for (TypeSymbolTable::const_iterator TI = ST.begin(), TE = ST.end();
1534 PrintLLVMName(Out, TI->first, LocalPrefix);
1537 // Make sure we print out at least one level of the type structure, so
1538 // that we do not get %FILE = type %FILE
1539 TypePrinter.printAtLeastOneLevel(TI->second, Out);
1544 /// printFunction - Print all aspects of a function.
1546 void AssemblyWriter::printFunction(const Function *F) {
1547 // Print out the return type and name.
1550 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out);
1552 if (F->isDeclaration())
1557 PrintLinkage(F->getLinkage(), Out);
1558 PrintVisibility(F->getVisibility(), Out);
1560 // Print the calling convention.
1561 switch (F->getCallingConv()) {
1562 case CallingConv::C: break; // default
1563 case CallingConv::Fast: Out << "fastcc "; break;
1564 case CallingConv::Cold: Out << "coldcc "; break;
1565 case CallingConv::X86_StdCall: Out << "x86_stdcallcc "; break;
1566 case CallingConv::X86_FastCall: Out << "x86_fastcallcc "; break;
1567 case CallingConv::ARM_APCS: Out << "arm_apcscc "; break;
1568 case CallingConv::ARM_AAPCS: Out << "arm_aapcscc "; break;
1569 case CallingConv::ARM_AAPCS_VFP:Out << "arm_aapcs_vfpcc "; break;
1570 default: Out << "cc" << F->getCallingConv() << " "; break;
1573 const FunctionType *FT = F->getFunctionType();
1574 const AttrListPtr &Attrs = F->getAttributes();
1575 Attributes RetAttrs = Attrs.getRetAttributes();
1576 if (RetAttrs != Attribute::None)
1577 Out << Attribute::getAsString(Attrs.getRetAttributes()) << ' ';
1578 TypePrinter.print(F->getReturnType(), Out);
1580 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1582 Machine.incorporateFunction(F);
1584 // Loop over the arguments, printing them...
1587 if (!F->isDeclaration()) {
1588 // If this isn't a declaration, print the argument names as well.
1589 for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
1591 // Insert commas as we go... the first arg doesn't get a comma
1592 if (I != F->arg_begin()) Out << ", ";
1593 printArgument(I, Attrs.getParamAttributes(Idx));
1597 // Otherwise, print the types from the function type.
1598 for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
1599 // Insert commas as we go... the first arg doesn't get a comma
1603 TypePrinter.print(FT->getParamType(i), Out);
1605 Attributes ArgAttrs = Attrs.getParamAttributes(i+1);
1606 if (ArgAttrs != Attribute::None)
1607 Out << ' ' << Attribute::getAsString(ArgAttrs);
1611 // Finish printing arguments...
1612 if (FT->isVarArg()) {
1613 if (FT->getNumParams()) Out << ", ";
1614 Out << "..."; // Output varargs portion of signature!
1617 Attributes FnAttrs = Attrs.getFnAttributes();
1618 if (FnAttrs != Attribute::None)
1619 Out << ' ' << Attribute::getAsString(Attrs.getFnAttributes());
1620 if (F->hasSection())
1621 Out << " section \"" << F->getSection() << '"';
1622 if (F->getAlignment())
1623 Out << " align " << F->getAlignment();
1625 Out << " gc \"" << F->getGC() << '"';
1626 if (F->isDeclaration()) {
1631 // Output all of its basic blocks... for the function
1632 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
1638 Machine.purgeFunction();
1641 /// printArgument - This member is called for every argument that is passed into
1642 /// the function. Simply print it out
1644 void AssemblyWriter::printArgument(const Argument *Arg,
1647 TypePrinter.print(Arg->getType(), Out);
1649 // Output parameter attributes list
1650 if (Attrs != Attribute::None)
1651 Out << ' ' << Attribute::getAsString(Attrs);
1653 // Output name, if available...
1654 if (Arg->hasName()) {
1656 PrintLLVMName(Out, Arg);
1660 /// printBasicBlock - This member is called for each basic block in a method.
1662 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
1663 if (BB->hasName()) { // Print out the label if it exists...
1665 PrintLLVMName(Out, BB->getName(), LabelPrefix);
1667 } else if (!BB->use_empty()) { // Don't print block # of no uses...
1668 Out << "\n; <label>:";
1669 int Slot = Machine.getLocalSlot(BB);
1676 if (BB->getParent() == 0) {
1677 Out.PadToColumn(50);
1678 Out << "; Error: Block without parent!";
1679 } else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
1680 // Output predecessors for the block...
1681 Out.PadToColumn(50);
1683 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
1686 Out << " No predecessors!";
1689 writeOperand(*PI, false);
1690 for (++PI; PI != PE; ++PI) {
1692 writeOperand(*PI, false);
1699 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out);
1701 // Output all of the instructions in the basic block...
1702 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
1703 printInstruction(*I);
1707 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out);
1711 /// printInfoComment - Print a little comment after the instruction indicating
1712 /// which slot it occupies.
1714 void AssemblyWriter::printInfoComment(const Value &V) {
1715 if (V.getType() != Type::VoidTy) {
1716 Out.PadToColumn(50);
1718 TypePrinter.print(V.getType(), Out);
1721 if (!V.hasName() && !isa<Instruction>(V)) {
1723 if (const GlobalValue *GV = dyn_cast<GlobalValue>(&V))
1724 SlotNum = Machine.getGlobalSlot(GV);
1726 SlotNum = Machine.getLocalSlot(&V);
1730 Out << ':' << SlotNum; // Print out the def slot taken.
1732 Out << " [#uses=" << V.getNumUses() << ']'; // Output # uses
1736 // This member is called for each Instruction in a function..
1737 void AssemblyWriter::printInstruction(const Instruction &I) {
1738 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);
1742 // Print out name if it exists...
1744 PrintLLVMName(Out, &I);
1746 } else if (I.getType() != Type::VoidTy) {
1747 // Print out the def slot taken.
1748 int SlotNum = Machine.getLocalSlot(&I);
1750 Out << "<badref> = ";
1752 Out << '%' << SlotNum << " = ";
1755 // If this is a volatile load or store, print out the volatile marker.
1756 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) ||
1757 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile())) {
1759 } else if (isa<CallInst>(I) && cast<CallInst>(I).isTailCall()) {
1760 // If this is a call, check if it's a tail call.
1764 // Print out the opcode...
1765 Out << I.getOpcodeName();
1767 // Print out optimization information.
1768 WriteOptimizationInfo(Out, &I);
1770 // Print out the compare instruction predicates
1771 if (const CmpInst *CI = dyn_cast<CmpInst>(&I))
1772 Out << ' ' << getPredicateText(CI->getPredicate());
1774 // Print out the type of the operands...
1775 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
1777 // Special case conditional branches to swizzle the condition out to the front
1778 if (isa<BranchInst>(I) && cast<BranchInst>(I).isConditional()) {
1779 BranchInst &BI(cast<BranchInst>(I));
1781 writeOperand(BI.getCondition(), true);
1783 writeOperand(BI.getSuccessor(0), true);
1785 writeOperand(BI.getSuccessor(1), true);
1787 } else if (isa<SwitchInst>(I)) {
1788 // Special case switch statement to get formatting nice and correct...
1790 writeOperand(Operand , true);
1792 writeOperand(I.getOperand(1), true);
1795 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
1797 writeOperand(I.getOperand(op ), true);
1799 writeOperand(I.getOperand(op+1), true);
1802 } else if (isa<PHINode>(I)) {
1804 TypePrinter.print(I.getType(), Out);
1807 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
1808 if (op) Out << ", ";
1810 writeOperand(I.getOperand(op ), false); Out << ", ";
1811 writeOperand(I.getOperand(op+1), false); Out << " ]";
1813 } else if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(&I)) {
1815 writeOperand(I.getOperand(0), true);
1816 for (const unsigned *i = EVI->idx_begin(), *e = EVI->idx_end(); i != e; ++i)
1818 } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(&I)) {
1820 writeOperand(I.getOperand(0), true); Out << ", ";
1821 writeOperand(I.getOperand(1), true);
1822 for (const unsigned *i = IVI->idx_begin(), *e = IVI->idx_end(); i != e; ++i)
1824 } else if (isa<ReturnInst>(I) && !Operand) {
1826 } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
1827 // Print the calling convention being used.
1828 switch (CI->getCallingConv()) {
1829 case CallingConv::C: break; // default
1830 case CallingConv::Fast: Out << " fastcc"; break;
1831 case CallingConv::Cold: Out << " coldcc"; break;
1832 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1833 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1834 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1835 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1836 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1837 default: Out << " cc" << CI->getCallingConv(); break;
1840 const PointerType *PTy = cast<PointerType>(Operand->getType());
1841 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1842 const Type *RetTy = FTy->getReturnType();
1843 const AttrListPtr &PAL = CI->getAttributes();
1845 if (PAL.getRetAttributes() != Attribute::None)
1846 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1848 // If possible, print out the short form of the call instruction. We can
1849 // only do this if the first argument is a pointer to a nonvararg function,
1850 // and if the return type is not a pointer to a function.
1853 if (!FTy->isVarArg() &&
1854 (!isa<PointerType>(RetTy) ||
1855 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1856 TypePrinter.print(RetTy, Out);
1858 writeOperand(Operand, false);
1860 writeOperand(Operand, true);
1863 for (unsigned op = 1, Eop = I.getNumOperands(); op < Eop; ++op) {
1866 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op));
1869 if (PAL.getFnAttributes() != Attribute::None)
1870 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1871 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
1872 const PointerType *PTy = cast<PointerType>(Operand->getType());
1873 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1874 const Type *RetTy = FTy->getReturnType();
1875 const AttrListPtr &PAL = II->getAttributes();
1877 // Print the calling convention being used.
1878 switch (II->getCallingConv()) {
1879 case CallingConv::C: break; // default
1880 case CallingConv::Fast: Out << " fastcc"; break;
1881 case CallingConv::Cold: Out << " coldcc"; break;
1882 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1883 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1884 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1885 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1886 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1887 default: Out << " cc" << II->getCallingConv(); break;
1890 if (PAL.getRetAttributes() != Attribute::None)
1891 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1893 // If possible, print out the short form of the invoke instruction. We can
1894 // only do this if the first argument is a pointer to a nonvararg function,
1895 // and if the return type is not a pointer to a function.
1898 if (!FTy->isVarArg() &&
1899 (!isa<PointerType>(RetTy) ||
1900 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1901 TypePrinter.print(RetTy, Out);
1903 writeOperand(Operand, false);
1905 writeOperand(Operand, true);
1908 for (unsigned op = 3, Eop = I.getNumOperands(); op < Eop; ++op) {
1911 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op-2));
1915 if (PAL.getFnAttributes() != Attribute::None)
1916 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1918 Out << "\n\t\t\tto ";
1919 writeOperand(II->getNormalDest(), true);
1921 writeOperand(II->getUnwindDest(), true);
1923 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
1925 TypePrinter.print(AI->getType()->getElementType(), Out);
1926 if (!AI->getArraySize() || AI->isArrayAllocation()) {
1928 writeOperand(AI->getArraySize(), true);
1930 if (AI->getAlignment()) {
1931 Out << ", align " << AI->getAlignment();
1933 } else if (isa<CastInst>(I)) {
1936 writeOperand(Operand, true); // Work with broken code
1939 TypePrinter.print(I.getType(), Out);
1940 } else if (isa<VAArgInst>(I)) {
1943 writeOperand(Operand, true); // Work with broken code
1946 TypePrinter.print(I.getType(), Out);
1947 } else if (Operand) { // Print the normal way.
1949 // PrintAllTypes - Instructions who have operands of all the same type
1950 // omit the type from all but the first operand. If the instruction has
1951 // different type operands (for example br), then they are all printed.
1952 bool PrintAllTypes = false;
1953 const Type *TheType = Operand->getType();
1955 // Select, Store and ShuffleVector always print all types.
1956 if (isa<SelectInst>(I) || isa<StoreInst>(I) || isa<ShuffleVectorInst>(I)
1957 || isa<ReturnInst>(I)) {
1958 PrintAllTypes = true;
1960 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
1961 Operand = I.getOperand(i);
1962 // note that Operand shouldn't be null, but the test helps make dump()
1963 // more tolerant of malformed IR
1964 if (Operand && Operand->getType() != TheType) {
1965 PrintAllTypes = true; // We have differing types! Print them all!
1971 if (!PrintAllTypes) {
1973 TypePrinter.print(TheType, Out);
1977 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
1979 writeOperand(I.getOperand(i), PrintAllTypes);
1983 // Print post operand alignment for load/store
1984 if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) {
1985 Out << ", align " << cast<LoadInst>(I).getAlignment();
1986 } else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) {
1987 Out << ", align " << cast<StoreInst>(I).getAlignment();
1990 printInfoComment(I);
1994 //===----------------------------------------------------------------------===//
1995 // External Interface declarations
1996 //===----------------------------------------------------------------------===//
1998 void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1999 raw_os_ostream OS(o);
2002 void Module::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW) const {
2003 SlotTracker SlotTable(this);
2004 size_t OldBufferSize = ROS.GetBufferSize();
2005 formatted_raw_ostream OS(ROS);
2006 AssemblyWriter W(OS, SlotTable, this, AAW);
2008 // formatted_raw_ostream forces the underlying raw_ostream to be
2009 // unbuffered. Reset it to its original buffer size.
2010 if (OldBufferSize != 0)
2011 ROS.SetBufferSize(OldBufferSize);
2014 void Type::print(std::ostream &o) const {
2015 raw_os_ostream OS(o);
2019 void Type::print(raw_ostream &OS) const {
2021 OS << "<null Type>";
2024 TypePrinting().print(this, OS);
2027 void Value::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW) const {
2029 ROS << "printing a <null> value\n";
2032 size_t OldBufferSize = ROS.GetBufferSize();
2033 formatted_raw_ostream OS(ROS);
2034 if (const Instruction *I = dyn_cast<Instruction>(this)) {
2035 const Function *F = I->getParent() ? I->getParent()->getParent() : 0;
2036 SlotTracker SlotTable(F);
2037 AssemblyWriter W(OS, SlotTable, F ? F->getParent() : 0, AAW);
2039 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(this)) {
2040 SlotTracker SlotTable(BB->getParent());
2041 AssemblyWriter W(OS, SlotTable,
2042 BB->getParent() ? BB->getParent()->getParent() : 0, AAW);
2044 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) {
2045 SlotTracker SlotTable(GV->getParent());
2046 AssemblyWriter W(OS, SlotTable, GV->getParent(), AAW);
2048 } else if (const MDString *MDS = dyn_cast<MDString>(this)) {
2049 TypePrinting TypePrinter;
2050 TypePrinter.print(MDS->getType(), OS);
2053 PrintEscapedString(MDS->getString(), OS);
2055 } else if (const MDNode *N = dyn_cast<MDNode>(this)) {
2056 SlotTracker SlotTable(N);
2057 TypePrinting TypePrinter;
2058 SlotTable.initialize();
2059 WriteMDNodes(OS, TypePrinter, SlotTable);
2060 } else if (const NamedMDNode *N = dyn_cast<NamedMDNode>(this)) {
2061 SlotTracker SlotTable(N);
2062 TypePrinting TypePrinter;
2063 SlotTable.initialize();
2064 OS << "!" << N->getName() << " = !{";
2065 for (unsigned i = 0, e = N->getNumElements(); i != e; ++i) {
2067 MDNode *MD = dyn_cast_or_null<MDNode>(N->getElement(i));
2069 OS << '!' << SlotTable.getMetadataSlot(MD);
2074 WriteMDNodes(OS, TypePrinter, SlotTable);
2075 } else if (const Constant *C = dyn_cast<Constant>(this)) {
2076 TypePrinting TypePrinter;
2077 TypePrinter.print(C->getType(), OS);
2079 WriteConstantInt(OS, C, TypePrinter, 0);
2080 } else if (const Argument *A = dyn_cast<Argument>(this)) {
2081 WriteAsOperand(OS, this, true,
2082 A->getParent() ? A->getParent()->getParent() : 0);
2083 } else if (isa<InlineAsm>(this)) {
2084 WriteAsOperand(OS, this, true, 0);
2086 llvm_unreachable("Unknown value to print out!");
2088 // formatted_raw_ostream forces the underlying raw_ostream to be
2089 // unbuffered. Reset it to its original buffer size.
2090 if (OldBufferSize != 0)
2091 ROS.SetBufferSize(OldBufferSize);
2094 void Value::print(std::ostream &O, AssemblyAnnotationWriter *AAW) const {
2095 raw_os_ostream OS(O);
2099 // Value::dump - allow easy printing of Values from the debugger.
2100 void Value::dump() const { print(errs()); errs() << '\n'; }
2102 // Type::dump - allow easy printing of Types from the debugger.
2103 // This one uses type names from the given context module
2104 void Type::dump(const Module *Context) const {
2105 WriteTypeSymbolic(errs(), this, Context);
2109 // Type::dump - allow easy printing of Types from the debugger.
2110 void Type::dump() const { dump(0); }
2112 // Module::dump() - Allow printing of Modules from the debugger.
2113 void Module::dump() const { print(errs(), 0); }