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/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 StringRef &Name, raw_ostream &Out) {
70 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
71 unsigned char C = Name[i];
72 if (isprint(C) && C != '\\' && C != '"')
75 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
86 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
87 /// prefixed with % (if the string only contains simple characters) or is
88 /// surrounded with ""'s (if it has special chars in it). Print it out.
89 static void PrintLLVMName(raw_ostream &OS, const StringRef &Name,
91 assert(Name.data() && "Cannot get empty name!");
93 default: llvm_unreachable("Bad prefix!");
95 case GlobalPrefix: OS << '@'; break;
96 case LabelPrefix: break;
97 case LocalPrefix: OS << '%'; break;
100 // Scan the name to see if it needs quotes first.
101 bool NeedsQuotes = isdigit(Name[0]);
103 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
105 if (!isalnum(C) && C != '-' && C != '.' && C != '_') {
112 // If we didn't need any quotes, just write out the name in one blast.
118 // Okay, we need quotes. Output the quotes and escape any scary characters as
121 PrintEscapedString(Name, OS);
125 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
126 /// prefixed with % (if the string only contains simple characters) or is
127 /// surrounded with ""'s (if it has special chars in it). Print it out.
128 static void PrintLLVMName(raw_ostream &OS, const Value *V) {
129 PrintLLVMName(OS, V->getName(),
130 isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix);
133 //===----------------------------------------------------------------------===//
134 // TypePrinting Class: Type printing machinery
135 //===----------------------------------------------------------------------===//
137 static DenseMap<const Type *, std::string> &getTypeNamesMap(void *M) {
138 return *static_cast<DenseMap<const Type *, std::string>*>(M);
141 void TypePrinting::clear() {
142 getTypeNamesMap(TypeNames).clear();
145 bool TypePrinting::hasTypeName(const Type *Ty) const {
146 return getTypeNamesMap(TypeNames).count(Ty);
149 void TypePrinting::addTypeName(const Type *Ty, const std::string &N) {
150 getTypeNamesMap(TypeNames).insert(std::make_pair(Ty, N));
154 TypePrinting::TypePrinting() {
155 TypeNames = new DenseMap<const Type *, std::string>();
158 TypePrinting::~TypePrinting() {
159 delete &getTypeNamesMap(TypeNames);
162 /// CalcTypeName - Write the specified type to the specified raw_ostream, making
163 /// use of type names or up references to shorten the type name where possible.
164 void TypePrinting::CalcTypeName(const Type *Ty,
165 SmallVectorImpl<const Type *> &TypeStack,
166 raw_ostream &OS, bool IgnoreTopLevelName) {
167 // Check to see if the type is named.
168 if (!IgnoreTopLevelName) {
169 DenseMap<const Type *, std::string> &TM = getTypeNamesMap(TypeNames);
170 DenseMap<const Type *, std::string>::iterator I = TM.find(Ty);
177 // Check to see if the Type is already on the stack...
178 unsigned Slot = 0, CurSize = TypeStack.size();
179 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
181 // This is another base case for the recursion. In this case, we know
182 // that we have looped back to a type that we have previously visited.
183 // Generate the appropriate upreference to handle this.
184 if (Slot < CurSize) {
185 OS << '\\' << unsigned(CurSize-Slot); // Here's the upreference
189 TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
191 switch (Ty->getTypeID()) {
192 case Type::VoidTyID: OS << "void"; break;
193 case Type::FloatTyID: OS << "float"; break;
194 case Type::DoubleTyID: OS << "double"; break;
195 case Type::X86_FP80TyID: OS << "x86_fp80"; break;
196 case Type::FP128TyID: OS << "fp128"; break;
197 case Type::PPC_FP128TyID: OS << "ppc_fp128"; break;
198 case Type::LabelTyID: OS << "label"; break;
199 case Type::MetadataTyID: OS << "metadata"; break;
200 case Type::IntegerTyID:
201 OS << 'i' << cast<IntegerType>(Ty)->getBitWidth();
204 case Type::FunctionTyID: {
205 const FunctionType *FTy = cast<FunctionType>(Ty);
206 CalcTypeName(FTy->getReturnType(), TypeStack, OS);
208 for (FunctionType::param_iterator I = FTy->param_begin(),
209 E = FTy->param_end(); I != E; ++I) {
210 if (I != FTy->param_begin())
212 CalcTypeName(*I, TypeStack, OS);
214 if (FTy->isVarArg()) {
215 if (FTy->getNumParams()) OS << ", ";
221 case Type::StructTyID: {
222 const StructType *STy = cast<StructType>(Ty);
226 for (StructType::element_iterator I = STy->element_begin(),
227 E = STy->element_end(); I != E; ++I) {
228 CalcTypeName(*I, TypeStack, OS);
229 if (next(I) != STy->element_end())
238 case Type::PointerTyID: {
239 const PointerType *PTy = cast<PointerType>(Ty);
240 CalcTypeName(PTy->getElementType(), TypeStack, OS);
241 if (unsigned AddressSpace = PTy->getAddressSpace())
242 OS << " addrspace(" << AddressSpace << ')';
246 case Type::ArrayTyID: {
247 const ArrayType *ATy = cast<ArrayType>(Ty);
248 OS << '[' << ATy->getNumElements() << " x ";
249 CalcTypeName(ATy->getElementType(), TypeStack, OS);
253 case Type::VectorTyID: {
254 const VectorType *PTy = cast<VectorType>(Ty);
255 OS << "<" << PTy->getNumElements() << " x ";
256 CalcTypeName(PTy->getElementType(), TypeStack, OS);
260 case Type::OpaqueTyID:
264 OS << "<unrecognized-type>";
268 TypeStack.pop_back(); // Remove self from stack.
271 /// printTypeInt - The internal guts of printing out a type that has a
272 /// potentially named portion.
274 void TypePrinting::print(const Type *Ty, raw_ostream &OS,
275 bool IgnoreTopLevelName) {
276 // Check to see if the type is named.
277 DenseMap<const Type*, std::string> &TM = getTypeNamesMap(TypeNames);
278 if (!IgnoreTopLevelName) {
279 DenseMap<const Type*, std::string>::iterator I = TM.find(Ty);
286 // Otherwise we have a type that has not been named but is a derived type.
287 // Carefully recurse the type hierarchy to print out any contained symbolic
289 SmallVector<const Type *, 16> TypeStack;
290 std::string TypeName;
292 raw_string_ostream TypeOS(TypeName);
293 CalcTypeName(Ty, TypeStack, TypeOS, IgnoreTopLevelName);
296 // Cache type name for later use.
297 if (!IgnoreTopLevelName)
298 TM.insert(std::make_pair(Ty, TypeOS.str()));
303 // To avoid walking constant expressions multiple times and other IR
304 // objects, we keep several helper maps.
305 DenseSet<const Value*> VisitedConstants;
306 DenseSet<const Type*> VisitedTypes;
309 std::vector<const Type*> &NumberedTypes;
311 TypeFinder(TypePrinting &tp, std::vector<const Type*> &numberedTypes)
312 : TP(tp), NumberedTypes(numberedTypes) {}
314 void Run(const Module &M) {
315 // Get types from the type symbol table. This gets opaque types referened
316 // only through derived named types.
317 const TypeSymbolTable &ST = M.getTypeSymbolTable();
318 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
320 IncorporateType(TI->second);
322 // Get types from global variables.
323 for (Module::const_global_iterator I = M.global_begin(),
324 E = M.global_end(); I != E; ++I) {
325 IncorporateType(I->getType());
326 if (I->hasInitializer())
327 IncorporateValue(I->getInitializer());
330 // Get types from aliases.
331 for (Module::const_alias_iterator I = M.alias_begin(),
332 E = M.alias_end(); I != E; ++I) {
333 IncorporateType(I->getType());
334 IncorporateValue(I->getAliasee());
337 // Get types from functions.
338 for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) {
339 IncorporateType(FI->getType());
341 for (Function::const_iterator BB = FI->begin(), E = FI->end();
343 for (BasicBlock::const_iterator II = BB->begin(),
344 E = BB->end(); II != E; ++II) {
345 const Instruction &I = *II;
346 // Incorporate the type of the instruction and all its operands.
347 IncorporateType(I.getType());
348 for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
350 IncorporateValue(*OI);
356 void IncorporateType(const Type *Ty) {
357 // Check to see if we're already visited this type.
358 if (!VisitedTypes.insert(Ty).second)
361 // If this is a structure or opaque type, add a name for the type.
362 if (((isa<StructType>(Ty) && cast<StructType>(Ty)->getNumElements())
363 || isa<OpaqueType>(Ty)) && !TP.hasTypeName(Ty)) {
364 TP.addTypeName(Ty, "%"+utostr(unsigned(NumberedTypes.size())));
365 NumberedTypes.push_back(Ty);
368 // Recursively walk all contained types.
369 for (Type::subtype_iterator I = Ty->subtype_begin(),
370 E = Ty->subtype_end(); I != E; ++I)
374 /// IncorporateValue - This method is used to walk operand lists finding
375 /// types hiding in constant expressions and other operands that won't be
376 /// walked in other ways. GlobalValues, basic blocks, instructions, and
377 /// inst operands are all explicitly enumerated.
378 void IncorporateValue(const Value *V) {
379 if (V == 0 || !isa<Constant>(V) || isa<GlobalValue>(V)) return;
382 if (!VisitedConstants.insert(V).second)
386 IncorporateType(V->getType());
388 // Look in operands for types.
389 const Constant *C = cast<Constant>(V);
390 for (Constant::const_op_iterator I = C->op_begin(),
391 E = C->op_end(); I != E;++I)
392 IncorporateValue(*I);
395 } // end anonymous namespace
398 /// AddModuleTypesToPrinter - Add all of the symbolic type names for types in
399 /// the specified module to the TypePrinter and all numbered types to it and the
400 /// NumberedTypes table.
401 static void AddModuleTypesToPrinter(TypePrinting &TP,
402 std::vector<const Type*> &NumberedTypes,
406 // If the module has a symbol table, take all global types and stuff their
407 // names into the TypeNames map.
408 const TypeSymbolTable &ST = M->getTypeSymbolTable();
409 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end();
411 const Type *Ty = cast<Type>(TI->second);
413 // As a heuristic, don't insert pointer to primitive types, because
414 // they are used too often to have a single useful name.
415 if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
416 const Type *PETy = PTy->getElementType();
417 if ((PETy->isPrimitiveType() || PETy->isInteger()) &&
418 !isa<OpaqueType>(PETy))
422 // Likewise don't insert primitives either.
423 if (Ty->isInteger() || Ty->isPrimitiveType())
426 // Get the name as a string and insert it into TypeNames.
428 raw_string_ostream NameOS(NameStr);
429 PrintLLVMName(NameOS, TI->first, LocalPrefix);
430 TP.addTypeName(Ty, NameOS.str());
433 // Walk the entire module to find references to unnamed structure and opaque
434 // types. This is required for correctness by opaque types (because multiple
435 // uses of an unnamed opaque type needs to be referred to by the same ID) and
436 // it shrinks complex recursive structure types substantially in some cases.
437 TypeFinder(TP, NumberedTypes).Run(*M);
441 /// WriteTypeSymbolic - This attempts to write the specified type as a symbolic
442 /// type, iff there is an entry in the modules symbol table for the specified
443 /// type or one of it's component types.
445 void llvm::WriteTypeSymbolic(raw_ostream &OS, const Type *Ty, const Module *M) {
446 TypePrinting Printer;
447 std::vector<const Type*> NumberedTypes;
448 AddModuleTypesToPrinter(Printer, NumberedTypes, M);
449 Printer.print(Ty, OS);
452 //===----------------------------------------------------------------------===//
453 // SlotTracker Class: Enumerate slot numbers for unnamed values
454 //===----------------------------------------------------------------------===//
458 /// This class provides computation of slot numbers for LLVM Assembly writing.
462 /// ValueMap - A mapping of Values to slot numbers.
463 typedef DenseMap<const Value*, unsigned> ValueMap;
466 /// TheModule - The module for which we are holding slot numbers.
467 const Module* TheModule;
469 /// TheFunction - The function for which we are holding slot numbers.
470 const Function* TheFunction;
471 bool FunctionProcessed;
473 /// TheMDNode - The MDNode for which we are holding slot numbers.
474 const MDNode *TheMDNode;
476 /// mMap - The TypePlanes map for the module level data.
480 /// fMap - The TypePlanes map for the function level data.
484 /// mdnMap - Map for MDNodes.
488 /// Construct from a module
489 explicit SlotTracker(const Module *M);
490 /// Construct from a function, starting out in incorp state.
491 explicit SlotTracker(const Function *F);
492 /// Construct from a mdnode.
493 explicit SlotTracker(const MDNode *N);
495 /// Return the slot number of the specified value in it's type
496 /// plane. If something is not in the SlotTracker, return -1.
497 int getLocalSlot(const Value *V);
498 int getGlobalSlot(const GlobalValue *V);
499 int getMetadataSlot(const MDNode *N);
501 /// If you'd like to deal with a function instead of just a module, use
502 /// this method to get its data into the SlotTracker.
503 void incorporateFunction(const Function *F) {
505 FunctionProcessed = false;
508 /// After calling incorporateFunction, use this method to remove the
509 /// most recently incorporated function from the SlotTracker. This
510 /// will reset the state of the machine back to just the module contents.
511 void purgeFunction();
513 /// MDNode map iterators.
514 ValueMap::iterator mdnBegin() { return mdnMap.begin(); }
515 ValueMap::iterator mdnEnd() { return mdnMap.end(); }
516 unsigned mdnSize() { return mdnMap.size(); }
518 /// This function does the actual initialization.
519 inline void initialize();
521 // Implementation Details
523 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
524 void CreateModuleSlot(const GlobalValue *V);
526 /// CreateMetadataSlot - Insert the specified MDNode* into the slot table.
527 void CreateMetadataSlot(const MDNode *N);
529 /// CreateFunctionSlot - Insert the specified Value* into the slot table.
530 void CreateFunctionSlot(const Value *V);
532 /// Add all of the module level global variables (and their initializers)
533 /// and function declarations, but not the contents of those functions.
534 void processModule();
536 /// Add all of the functions arguments, basic blocks, and instructions.
537 void processFunction();
539 /// Add all MDNode operands.
540 void processMDNode();
542 SlotTracker(const SlotTracker &); // DO NOT IMPLEMENT
543 void operator=(const SlotTracker &); // DO NOT IMPLEMENT
546 } // end anonymous namespace
549 static SlotTracker *createSlotTracker(const Value *V) {
550 if (const Argument *FA = dyn_cast<Argument>(V))
551 return new SlotTracker(FA->getParent());
553 if (const Instruction *I = dyn_cast<Instruction>(V))
554 return new SlotTracker(I->getParent()->getParent());
556 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
557 return new SlotTracker(BB->getParent());
559 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
560 return new SlotTracker(GV->getParent());
562 if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
563 return new SlotTracker(GA->getParent());
565 if (const Function *Func = dyn_cast<Function>(V))
566 return new SlotTracker(Func);
572 #define ST_DEBUG(X) errs() << X
577 // Module level constructor. Causes the contents of the Module (sans functions)
578 // to be added to the slot table.
579 SlotTracker::SlotTracker(const Module *M)
580 : TheModule(M), TheFunction(0), FunctionProcessed(false), TheMDNode(0),
581 mNext(0), fNext(0), mdnNext(0) {
584 // Function level constructor. Causes the contents of the Module and the one
585 // function provided to be added to the slot table.
586 SlotTracker::SlotTracker(const Function *F)
587 : TheModule(F ? F->getParent() : 0), TheFunction(F), FunctionProcessed(false),
588 TheMDNode(0), mNext(0), fNext(0), mdnNext(0) {
591 // Constructor to handle single MDNode.
592 SlotTracker::SlotTracker(const MDNode *C)
593 : TheModule(0), TheFunction(0), FunctionProcessed(false), TheMDNode(C),
594 mNext(0), fNext(0), mdnNext(0) {
597 inline void SlotTracker::initialize() {
600 TheModule = 0; ///< Prevent re-processing next time we're called.
603 if (TheFunction && !FunctionProcessed)
610 // Iterate through all the global variables, functions, and global
611 // variable initializers and create slots for them.
612 void SlotTracker::processModule() {
613 ST_DEBUG("begin processModule!\n");
615 // Add all of the unnamed global variables to the value table.
616 for (Module::const_global_iterator I = TheModule->global_begin(),
617 E = TheModule->global_end(); I != E; ++I) {
620 if (I->hasInitializer()) {
621 if (MDNode *N = dyn_cast<MDNode>(I->getInitializer()))
622 CreateMetadataSlot(N);
626 // Add metadata used by named metadata.
627 for (Module::const_named_metadata_iterator
628 I = TheModule->named_metadata_begin(),
629 E = TheModule->named_metadata_end(); I != E; ++I) {
630 const NamedMDNode *NMD = I;
631 for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
632 MDNode *MD = dyn_cast_or_null<MDNode>(NMD->getElement(i));
633 CreateMetadataSlot(MD);
637 // Add all the unnamed functions to the table.
638 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
643 ST_DEBUG("end processModule!\n");
646 // Process the arguments, basic blocks, and instructions of a function.
647 void SlotTracker::processFunction() {
648 ST_DEBUG("begin processFunction!\n");
651 // Add all the function arguments with no names.
652 for(Function::const_arg_iterator AI = TheFunction->arg_begin(),
653 AE = TheFunction->arg_end(); AI != AE; ++AI)
655 CreateFunctionSlot(AI);
657 ST_DEBUG("Inserting Instructions:\n");
659 // Add all of the basic blocks and instructions with no names.
660 for (Function::const_iterator BB = TheFunction->begin(),
661 E = TheFunction->end(); BB != E; ++BB) {
663 CreateFunctionSlot(BB);
664 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E;
666 if (I->getType() != Type::VoidTy && !I->hasName())
667 CreateFunctionSlot(I);
668 for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
669 if (MDNode *N = dyn_cast<MDNode>(I->getOperand(i)))
670 CreateMetadataSlot(N);
674 FunctionProcessed = true;
676 ST_DEBUG("end processFunction!\n");
679 /// processMDNode - Process TheMDNode.
680 void SlotTracker::processMDNode() {
681 ST_DEBUG("begin processMDNode!\n");
683 CreateMetadataSlot(TheMDNode);
685 ST_DEBUG("end processMDNode!\n");
688 /// Clean up after incorporating a function. This is the only way to get out of
689 /// the function incorporation state that affects get*Slot/Create*Slot. Function
690 /// incorporation state is indicated by TheFunction != 0.
691 void SlotTracker::purgeFunction() {
692 ST_DEBUG("begin purgeFunction!\n");
693 fMap.clear(); // Simply discard the function level map
695 FunctionProcessed = false;
696 ST_DEBUG("end purgeFunction!\n");
699 /// getGlobalSlot - Get the slot number of a global value.
700 int SlotTracker::getGlobalSlot(const GlobalValue *V) {
701 // Check for uninitialized state and do lazy initialization.
704 // Find the type plane in the module map
705 ValueMap::iterator MI = mMap.find(V);
706 return MI == mMap.end() ? -1 : (int)MI->second;
709 /// getGlobalSlot - Get the slot number of a MDNode.
710 int SlotTracker::getMetadataSlot(const MDNode *N) {
711 // Check for uninitialized state and do lazy initialization.
714 // Find the type plane in the module map
715 ValueMap::iterator MI = mdnMap.find(N);
716 return MI == mdnMap.end() ? -1 : (int)MI->second;
720 /// getLocalSlot - Get the slot number for a value that is local to a function.
721 int SlotTracker::getLocalSlot(const Value *V) {
722 assert(!isa<Constant>(V) && "Can't get a constant or global slot with this!");
724 // Check for uninitialized state and do lazy initialization.
727 ValueMap::iterator FI = fMap.find(V);
728 return FI == fMap.end() ? -1 : (int)FI->second;
732 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
733 void SlotTracker::CreateModuleSlot(const GlobalValue *V) {
734 assert(V && "Can't insert a null Value into SlotTracker!");
735 assert(V->getType() != Type::VoidTy && "Doesn't need a slot!");
736 assert(!V->hasName() && "Doesn't need a slot!");
738 unsigned DestSlot = mNext++;
741 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
743 // G = Global, F = Function, A = Alias, o = other
744 ST_DEBUG((isa<GlobalVariable>(V) ? 'G' :
745 (isa<Function>(V) ? 'F' :
746 (isa<GlobalAlias>(V) ? 'A' : 'o'))) << "]\n");
749 /// CreateSlot - Create a new slot for the specified value if it has no name.
750 void SlotTracker::CreateFunctionSlot(const Value *V) {
751 assert(V->getType() != Type::VoidTy && !V->hasName() &&
752 "Doesn't need a slot!");
754 unsigned DestSlot = fNext++;
757 // G = Global, F = Function, o = other
758 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
759 DestSlot << " [o]\n");
762 /// CreateModuleSlot - Insert the specified MDNode* into the slot table.
763 void SlotTracker::CreateMetadataSlot(const MDNode *N) {
764 assert(N && "Can't insert a null Value into SlotTracker!");
766 ValueMap::iterator I = mdnMap.find(N);
767 if (I != mdnMap.end())
770 unsigned DestSlot = mdnNext++;
771 mdnMap[N] = DestSlot;
773 for (MDNode::const_elem_iterator MDI = N->elem_begin(),
774 MDE = N->elem_end(); MDI != MDE; ++MDI) {
775 const Value *TV = *MDI;
777 if (const MDNode *N2 = dyn_cast<MDNode>(TV))
778 CreateMetadataSlot(N2);
782 //===----------------------------------------------------------------------===//
783 // AsmWriter Implementation
784 //===----------------------------------------------------------------------===//
786 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
787 TypePrinting &TypePrinter,
788 SlotTracker *Machine);
792 static const char *getPredicateText(unsigned predicate) {
793 const char * pred = "unknown";
795 case FCmpInst::FCMP_FALSE: pred = "false"; break;
796 case FCmpInst::FCMP_OEQ: pred = "oeq"; break;
797 case FCmpInst::FCMP_OGT: pred = "ogt"; break;
798 case FCmpInst::FCMP_OGE: pred = "oge"; break;
799 case FCmpInst::FCMP_OLT: pred = "olt"; break;
800 case FCmpInst::FCMP_OLE: pred = "ole"; break;
801 case FCmpInst::FCMP_ONE: pred = "one"; break;
802 case FCmpInst::FCMP_ORD: pred = "ord"; break;
803 case FCmpInst::FCMP_UNO: pred = "uno"; break;
804 case FCmpInst::FCMP_UEQ: pred = "ueq"; break;
805 case FCmpInst::FCMP_UGT: pred = "ugt"; break;
806 case FCmpInst::FCMP_UGE: pred = "uge"; break;
807 case FCmpInst::FCMP_ULT: pred = "ult"; break;
808 case FCmpInst::FCMP_ULE: pred = "ule"; break;
809 case FCmpInst::FCMP_UNE: pred = "une"; break;
810 case FCmpInst::FCMP_TRUE: pred = "true"; break;
811 case ICmpInst::ICMP_EQ: pred = "eq"; break;
812 case ICmpInst::ICMP_NE: pred = "ne"; break;
813 case ICmpInst::ICMP_SGT: pred = "sgt"; break;
814 case ICmpInst::ICMP_SGE: pred = "sge"; break;
815 case ICmpInst::ICMP_SLT: pred = "slt"; break;
816 case ICmpInst::ICMP_SLE: pred = "sle"; break;
817 case ICmpInst::ICMP_UGT: pred = "ugt"; break;
818 case ICmpInst::ICMP_UGE: pred = "uge"; break;
819 case ICmpInst::ICMP_ULT: pred = "ult"; break;
820 case ICmpInst::ICMP_ULE: pred = "ule"; break;
825 static void WriteMDNodes(raw_ostream &Out, TypePrinting &TypePrinter,
826 SlotTracker &Machine) {
827 SmallVector<const MDNode *, 16> Nodes;
828 Nodes.resize(Machine.mdnSize());
829 for (SlotTracker::ValueMap::iterator I =
830 Machine.mdnBegin(), E = Machine.mdnEnd(); I != E; ++I)
831 Nodes[I->second] = cast<MDNode>(I->first);
833 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
834 Out << '!' << i << " = metadata ";
835 const MDNode *Node = Nodes[i];
837 for (MDNode::const_elem_iterator NI = Node->elem_begin(),
838 NE = Node->elem_end(); NI != NE;) {
839 const Value *V = *NI;
842 else if (const MDNode *N = dyn_cast<MDNode>(V)) {
844 Out << '!' << Machine.getMetadataSlot(N);
847 TypePrinter.print((*NI)->getType(), Out);
849 WriteAsOperandInternal(Out, *NI, TypePrinter, &Machine);
858 static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
859 if (const OverflowingBinaryOperator *OBO =
860 dyn_cast<OverflowingBinaryOperator>(U)) {
861 if (OBO->hasNoUnsignedOverflow())
863 if (OBO->hasNoSignedOverflow())
865 } else if (const SDivOperator *Div = dyn_cast<SDivOperator>(U)) {
868 } else if (const GEPOperator *GEP = dyn_cast<GEPOperator>(U)) {
869 if (GEP->isInBounds())
874 static void WriteConstantInt(raw_ostream &Out, const Constant *CV,
875 TypePrinting &TypePrinter, SlotTracker *Machine) {
876 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
877 if (CI->getType() == Type::Int1Ty) {
878 Out << (CI->getZExtValue() ? "true" : "false");
881 Out << CI->getValue();
885 if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
886 if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble ||
887 &CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle) {
888 // We would like to output the FP constant value in exponential notation,
889 // but we cannot do this if doing so will lose precision. Check here to
890 // make sure that we only output it in exponential format if we can parse
891 // the value back and get the same value.
894 bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble;
895 double Val = isDouble ? CFP->getValueAPF().convertToDouble() :
896 CFP->getValueAPF().convertToFloat();
897 std::string StrVal = ftostr(CFP->getValueAPF());
899 // Check to make sure that the stringized number is not some string like
900 // "Inf" or NaN, that atof will accept, but the lexer will not. Check
901 // that the string matches the "[-+]?[0-9]" regex.
903 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
904 ((StrVal[0] == '-' || StrVal[0] == '+') &&
905 (StrVal[1] >= '0' && StrVal[1] <= '9'))) {
906 // Reparse stringized version!
907 if (atof(StrVal.c_str()) == Val) {
912 // Otherwise we could not reparse it to exactly the same value, so we must
913 // output the string in hexadecimal format! Note that loading and storing
914 // floating point types changes the bits of NaNs on some hosts, notably
915 // x86, so we must not use these types.
916 assert(sizeof(double) == sizeof(uint64_t) &&
917 "assuming that double is 64 bits!");
919 APFloat apf = CFP->getValueAPF();
920 // Floats are represented in ASCII IR as double, convert.
922 apf.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
925 utohex_buffer(uint64_t(apf.bitcastToAPInt().getZExtValue()),
930 // Some form of long double. These appear as a magic letter identifying
931 // the type, then a fixed number of hex digits.
933 if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) {
935 // api needed to prevent premature destruction
936 APInt api = CFP->getValueAPF().bitcastToAPInt();
937 const uint64_t* p = api.getRawData();
938 uint64_t word = p[1];
940 int width = api.getBitWidth();
941 for (int j=0; j<width; j+=4, shiftcount-=4) {
942 unsigned int nibble = (word>>shiftcount) & 15;
944 Out << (unsigned char)(nibble + '0');
946 Out << (unsigned char)(nibble - 10 + 'A');
947 if (shiftcount == 0 && j+4 < width) {
951 shiftcount = width-j-4;
955 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad)
957 else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble)
960 llvm_unreachable("Unsupported floating point type");
961 // api needed to prevent premature destruction
962 APInt api = CFP->getValueAPF().bitcastToAPInt();
963 const uint64_t* p = api.getRawData();
966 int width = api.getBitWidth();
967 for (int j=0; j<width; j+=4, shiftcount-=4) {
968 unsigned int nibble = (word>>shiftcount) & 15;
970 Out << (unsigned char)(nibble + '0');
972 Out << (unsigned char)(nibble - 10 + 'A');
973 if (shiftcount == 0 && j+4 < width) {
977 shiftcount = width-j-4;
983 if (isa<ConstantAggregateZero>(CV)) {
984 Out << "zeroinitializer";
988 if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
989 // As a special case, print the array as a string if it is an array of
990 // i8 with ConstantInt values.
992 const Type *ETy = CA->getType()->getElementType();
993 if (CA->isString()) {
995 PrintEscapedString(CA->getAsString(), Out);
997 } else { // Cannot output in string format...
999 if (CA->getNumOperands()) {
1000 TypePrinter.print(ETy, Out);
1002 WriteAsOperandInternal(Out, CA->getOperand(0),
1003 TypePrinter, Machine);
1004 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
1006 TypePrinter.print(ETy, Out);
1008 WriteAsOperandInternal(Out, CA->getOperand(i), TypePrinter, Machine);
1016 if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
1017 if (CS->getType()->isPacked())
1020 unsigned N = CS->getNumOperands();
1023 TypePrinter.print(CS->getOperand(0)->getType(), Out);
1026 WriteAsOperandInternal(Out, CS->getOperand(0), TypePrinter, Machine);
1028 for (unsigned i = 1; i < N; i++) {
1030 TypePrinter.print(CS->getOperand(i)->getType(), Out);
1033 WriteAsOperandInternal(Out, CS->getOperand(i), TypePrinter, Machine);
1039 if (CS->getType()->isPacked())
1044 if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1045 const Type *ETy = CP->getType()->getElementType();
1046 assert(CP->getNumOperands() > 0 &&
1047 "Number of operands for a PackedConst must be > 0");
1049 TypePrinter.print(ETy, Out);
1051 WriteAsOperandInternal(Out, CP->getOperand(0), TypePrinter, Machine);
1052 for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
1054 TypePrinter.print(ETy, Out);
1056 WriteAsOperandInternal(Out, CP->getOperand(i), TypePrinter, Machine);
1062 if (isa<ConstantPointerNull>(CV)) {
1067 if (isa<UndefValue>(CV)) {
1072 if (const MDNode *Node = dyn_cast<MDNode>(CV)) {
1073 Out << "!" << Machine->getMetadataSlot(Node);
1077 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
1078 Out << CE->getOpcodeName();
1079 WriteOptimizationInfo(Out, CE);
1080 if (CE->isCompare())
1081 Out << ' ' << getPredicateText(CE->getPredicate());
1084 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
1085 TypePrinter.print((*OI)->getType(), Out);
1087 WriteAsOperandInternal(Out, *OI, TypePrinter, Machine);
1088 if (OI+1 != CE->op_end())
1092 if (CE->hasIndices()) {
1093 const SmallVector<unsigned, 4> &Indices = CE->getIndices();
1094 for (unsigned i = 0, e = Indices.size(); i != e; ++i)
1095 Out << ", " << Indices[i];
1100 TypePrinter.print(CE->getType(), Out);
1107 Out << "<placeholder or erroneous Constant>";
1111 /// WriteAsOperand - Write the name of the specified value out to the specified
1112 /// ostream. This can be useful when you just want to print int %reg126, not
1113 /// the whole instruction that generated it.
1115 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
1116 TypePrinting &TypePrinter,
1117 SlotTracker *Machine) {
1119 PrintLLVMName(Out, V);
1123 const Constant *CV = dyn_cast<Constant>(V);
1124 if (CV && !isa<GlobalValue>(CV)) {
1125 WriteConstantInt(Out, CV, TypePrinter, Machine);
1129 if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
1131 if (IA->hasSideEffects())
1132 Out << "sideeffect ";
1134 PrintEscapedString(IA->getAsmString(), Out);
1136 PrintEscapedString(IA->getConstraintString(), Out);
1141 if (const MDNode *N = dyn_cast<MDNode>(V)) {
1142 Out << '!' << Machine->getMetadataSlot(N);
1146 if (const MDString *MDS = dyn_cast<MDString>(V)) {
1148 PrintEscapedString(MDS->getString(), Out);
1156 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1157 Slot = Machine->getGlobalSlot(GV);
1160 Slot = Machine->getLocalSlot(V);
1163 Machine = createSlotTracker(V);
1165 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1166 Slot = Machine->getGlobalSlot(GV);
1169 Slot = Machine->getLocalSlot(V);
1178 Out << Prefix << Slot;
1183 /// WriteAsOperand - Write the name of the specified value out to the specified
1184 /// ostream. This can be useful when you just want to print int %reg126, not
1185 /// the whole instruction that generated it.
1187 void llvm::WriteAsOperand(std::ostream &Out, const Value *V, bool PrintType,
1188 const Module *Context) {
1189 raw_os_ostream OS(Out);
1190 WriteAsOperand(OS, V, PrintType, Context);
1193 void llvm::WriteAsOperand(raw_ostream &Out, const Value *V, bool PrintType,
1194 const Module *Context) {
1195 if (Context == 0) Context = getModuleFromVal(V);
1197 TypePrinting TypePrinter;
1198 std::vector<const Type*> NumberedTypes;
1199 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, Context);
1201 TypePrinter.print(V->getType(), Out);
1205 WriteAsOperandInternal(Out, V, TypePrinter, 0);
1211 class AssemblyWriter {
1213 SlotTracker &Machine;
1214 const Module *TheModule;
1215 TypePrinting TypePrinter;
1216 AssemblyAnnotationWriter *AnnotationWriter;
1217 std::vector<const Type*> NumberedTypes;
1219 // Each MDNode is assigned unique MetadataIDNo.
1220 std::map<const MDNode *, unsigned> MDNodes;
1221 unsigned MetadataIDNo;
1223 inline AssemblyWriter(raw_ostream &o, SlotTracker &Mac, const Module *M,
1224 AssemblyAnnotationWriter *AAW)
1225 : Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW), MetadataIDNo(0) {
1226 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, M);
1229 void write(const Module *M) { printModule(M); }
1231 void write(const GlobalValue *G) {
1232 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(G))
1234 else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(G))
1236 else if (const Function *F = dyn_cast<Function>(G))
1239 llvm_unreachable("Unknown global");
1242 void write(const BasicBlock *BB) { printBasicBlock(BB); }
1243 void write(const Instruction *I) { printInstruction(*I); }
1245 void writeOperand(const Value *Op, bool PrintType);
1246 void writeParamOperand(const Value *Operand, Attributes Attrs);
1248 const Module* getModule() { return TheModule; }
1251 void printModule(const Module *M);
1252 void printTypeSymbolTable(const TypeSymbolTable &ST);
1253 void printGlobal(const GlobalVariable *GV);
1254 void printAlias(const GlobalAlias *GV);
1255 void printFunction(const Function *F);
1256 void printArgument(const Argument *FA, Attributes Attrs);
1257 void printBasicBlock(const BasicBlock *BB);
1258 void printInstruction(const Instruction &I);
1260 // printInfoComment - Print a little comment after the instruction indicating
1261 // which slot it occupies.
1262 void printInfoComment(const Value &V);
1264 } // end of anonymous namespace
1267 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType) {
1269 Out << "<null operand!>";
1272 TypePrinter.print(Operand->getType(), Out);
1275 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1279 void AssemblyWriter::writeParamOperand(const Value *Operand,
1282 Out << "<null operand!>";
1285 TypePrinter.print(Operand->getType(), Out);
1286 // Print parameter attributes list
1287 if (Attrs != Attribute::None)
1288 Out << ' ' << Attribute::getAsString(Attrs);
1290 // Print the operand
1291 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine);
1295 void AssemblyWriter::printModule(const Module *M) {
1296 if (!M->getModuleIdentifier().empty() &&
1297 // Don't print the ID if it will start a new line (which would
1298 // require a comment char before it).
1299 M->getModuleIdentifier().find('\n') == std::string::npos)
1300 Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n";
1302 if (!M->getDataLayout().empty())
1303 Out << "target datalayout = \"" << M->getDataLayout() << "\"\n";
1304 if (!M->getTargetTriple().empty())
1305 Out << "target triple = \"" << M->getTargetTriple() << "\"\n";
1307 if (!M->getModuleInlineAsm().empty()) {
1308 // Split the string into lines, to make it easier to read the .ll file.
1309 std::string Asm = M->getModuleInlineAsm();
1311 size_t NewLine = Asm.find_first_of('\n', CurPos);
1312 while (NewLine != std::string::npos) {
1313 // We found a newline, print the portion of the asm string from the
1314 // last newline up to this newline.
1315 Out << "module asm \"";
1316 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.begin()+NewLine),
1320 NewLine = Asm.find_first_of('\n', CurPos);
1322 Out << "module asm \"";
1323 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.end()), Out);
1327 // Loop over the dependent libraries and emit them.
1328 Module::lib_iterator LI = M->lib_begin();
1329 Module::lib_iterator LE = M->lib_end();
1331 Out << "deplibs = [ ";
1333 Out << '"' << *LI << '"';
1341 // Loop over the symbol table, emitting all id'd types.
1342 printTypeSymbolTable(M->getTypeSymbolTable());
1344 for (Module::const_global_iterator I = M->global_begin(), E = M->global_end();
1348 // Output all aliases.
1349 if (!M->alias_empty()) Out << "\n";
1350 for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
1354 // Output all of the functions.
1355 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
1358 // Output named metadata.
1359 for (Module::const_named_metadata_iterator I = M->named_metadata_begin(),
1360 E = M->named_metadata_end(); I != E; ++I) {
1361 const NamedMDNode *NMD = I;
1362 Out << "!" << NMD->getName() << " = !{";
1363 for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
1365 MDNode *MD = cast<MDNode>(NMD->getElement(i));
1366 Out << '!' << Machine.getMetadataSlot(MD);
1372 WriteMDNodes(Out, TypePrinter, Machine);
1375 static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) {
1377 case GlobalValue::ExternalLinkage: break;
1378 case GlobalValue::PrivateLinkage: Out << "private "; break;
1379 case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break;
1380 case GlobalValue::InternalLinkage: Out << "internal "; break;
1381 case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
1382 case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
1383 case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
1384 case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
1385 case GlobalValue::CommonLinkage: Out << "common "; break;
1386 case GlobalValue::AppendingLinkage: Out << "appending "; break;
1387 case GlobalValue::DLLImportLinkage: Out << "dllimport "; break;
1388 case GlobalValue::DLLExportLinkage: Out << "dllexport "; break;
1389 case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
1390 case GlobalValue::AvailableExternallyLinkage:
1391 Out << "available_externally ";
1393 case GlobalValue::GhostLinkage:
1394 llvm_unreachable("GhostLinkage not allowed in AsmWriter!");
1399 static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
1402 default: llvm_unreachable("Invalid visibility style!");
1403 case GlobalValue::DefaultVisibility: break;
1404 case GlobalValue::HiddenVisibility: Out << "hidden "; break;
1405 case GlobalValue::ProtectedVisibility: Out << "protected "; break;
1409 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
1410 if (GV->hasName()) {
1411 PrintLLVMName(Out, GV);
1415 if (!GV->hasInitializer() && GV->hasExternalLinkage())
1418 PrintLinkage(GV->getLinkage(), Out);
1419 PrintVisibility(GV->getVisibility(), Out);
1421 if (GV->isThreadLocal()) Out << "thread_local ";
1422 if (unsigned AddressSpace = GV->getType()->getAddressSpace())
1423 Out << "addrspace(" << AddressSpace << ") ";
1424 Out << (GV->isConstant() ? "constant " : "global ");
1425 TypePrinter.print(GV->getType()->getElementType(), Out);
1427 if (GV->hasInitializer()) {
1429 writeOperand(GV->getInitializer(), false);
1432 if (GV->hasSection())
1433 Out << ", section \"" << GV->getSection() << '"';
1434 if (GV->getAlignment())
1435 Out << ", align " << GV->getAlignment();
1437 printInfoComment(*GV);
1441 void AssemblyWriter::printAlias(const GlobalAlias *GA) {
1442 // Don't crash when dumping partially built GA
1444 Out << "<<nameless>> = ";
1446 PrintLLVMName(Out, GA);
1449 PrintVisibility(GA->getVisibility(), Out);
1453 PrintLinkage(GA->getLinkage(), Out);
1455 const Constant *Aliasee = GA->getAliasee();
1457 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Aliasee)) {
1458 TypePrinter.print(GV->getType(), Out);
1460 PrintLLVMName(Out, GV);
1461 } else if (const Function *F = dyn_cast<Function>(Aliasee)) {
1462 TypePrinter.print(F->getFunctionType(), Out);
1465 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1466 } else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(Aliasee)) {
1467 TypePrinter.print(GA->getType(), Out);
1469 PrintLLVMName(Out, GA);
1471 const ConstantExpr *CE = cast<ConstantExpr>(Aliasee);
1472 // The only valid GEP is an all zero GEP.
1473 assert((CE->getOpcode() == Instruction::BitCast ||
1474 CE->getOpcode() == Instruction::GetElementPtr) &&
1475 "Unsupported aliasee");
1476 writeOperand(CE, false);
1479 printInfoComment(*GA);
1483 void AssemblyWriter::printTypeSymbolTable(const TypeSymbolTable &ST) {
1484 // Emit all numbered types.
1485 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i) {
1488 // Make sure we print out at least one level of the type structure, so
1489 // that we do not get %2 = type %2
1490 TypePrinter.printAtLeastOneLevel(NumberedTypes[i], Out);
1491 Out << "\t\t; type %" << i << '\n';
1494 // Print the named types.
1495 for (TypeSymbolTable::const_iterator TI = ST.begin(), TE = ST.end();
1498 PrintLLVMName(Out, TI->first, LocalPrefix);
1501 // Make sure we print out at least one level of the type structure, so
1502 // that we do not get %FILE = type %FILE
1503 TypePrinter.printAtLeastOneLevel(TI->second, Out);
1508 /// printFunction - Print all aspects of a function.
1510 void AssemblyWriter::printFunction(const Function *F) {
1511 // Print out the return type and name.
1514 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out);
1516 if (F->isDeclaration())
1521 PrintLinkage(F->getLinkage(), Out);
1522 PrintVisibility(F->getVisibility(), Out);
1524 // Print the calling convention.
1525 switch (F->getCallingConv()) {
1526 case CallingConv::C: break; // default
1527 case CallingConv::Fast: Out << "fastcc "; break;
1528 case CallingConv::Cold: Out << "coldcc "; break;
1529 case CallingConv::X86_StdCall: Out << "x86_stdcallcc "; break;
1530 case CallingConv::X86_FastCall: Out << "x86_fastcallcc "; break;
1531 case CallingConv::ARM_APCS: Out << "arm_apcscc "; break;
1532 case CallingConv::ARM_AAPCS: Out << "arm_aapcscc "; break;
1533 case CallingConv::ARM_AAPCS_VFP:Out << "arm_aapcs_vfpcc "; break;
1534 default: Out << "cc" << F->getCallingConv() << " "; break;
1537 const FunctionType *FT = F->getFunctionType();
1538 const AttrListPtr &Attrs = F->getAttributes();
1539 Attributes RetAttrs = Attrs.getRetAttributes();
1540 if (RetAttrs != Attribute::None)
1541 Out << Attribute::getAsString(Attrs.getRetAttributes()) << ' ';
1542 TypePrinter.print(F->getReturnType(), Out);
1544 WriteAsOperandInternal(Out, F, TypePrinter, &Machine);
1546 Machine.incorporateFunction(F);
1548 // Loop over the arguments, printing them...
1551 if (!F->isDeclaration()) {
1552 // If this isn't a declaration, print the argument names as well.
1553 for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
1555 // Insert commas as we go... the first arg doesn't get a comma
1556 if (I != F->arg_begin()) Out << ", ";
1557 printArgument(I, Attrs.getParamAttributes(Idx));
1561 // Otherwise, print the types from the function type.
1562 for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
1563 // Insert commas as we go... the first arg doesn't get a comma
1567 TypePrinter.print(FT->getParamType(i), Out);
1569 Attributes ArgAttrs = Attrs.getParamAttributes(i+1);
1570 if (ArgAttrs != Attribute::None)
1571 Out << ' ' << Attribute::getAsString(ArgAttrs);
1575 // Finish printing arguments...
1576 if (FT->isVarArg()) {
1577 if (FT->getNumParams()) Out << ", ";
1578 Out << "..."; // Output varargs portion of signature!
1581 Attributes FnAttrs = Attrs.getFnAttributes();
1582 if (FnAttrs != Attribute::None)
1583 Out << ' ' << Attribute::getAsString(Attrs.getFnAttributes());
1584 if (F->hasSection())
1585 Out << " section \"" << F->getSection() << '"';
1586 if (F->getAlignment())
1587 Out << " align " << F->getAlignment();
1589 Out << " gc \"" << F->getGC() << '"';
1590 if (F->isDeclaration()) {
1595 // Output all of its basic blocks... for the function
1596 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
1602 Machine.purgeFunction();
1605 /// printArgument - This member is called for every argument that is passed into
1606 /// the function. Simply print it out
1608 void AssemblyWriter::printArgument(const Argument *Arg,
1611 TypePrinter.print(Arg->getType(), Out);
1613 // Output parameter attributes list
1614 if (Attrs != Attribute::None)
1615 Out << ' ' << Attribute::getAsString(Attrs);
1617 // Output name, if available...
1618 if (Arg->hasName()) {
1620 PrintLLVMName(Out, Arg);
1624 /// printBasicBlock - This member is called for each basic block in a method.
1626 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
1627 if (BB->hasName()) { // Print out the label if it exists...
1629 PrintLLVMName(Out, BB->getName(), LabelPrefix);
1631 } else if (!BB->use_empty()) { // Don't print block # of no uses...
1632 Out << "\n; <label>:";
1633 int Slot = Machine.getLocalSlot(BB);
1640 if (BB->getParent() == 0)
1641 Out << "\t\t; Error: Block without parent!";
1642 else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
1643 // Output predecessors for the block...
1645 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
1648 Out << " No predecessors!";
1651 writeOperand(*PI, false);
1652 for (++PI; PI != PE; ++PI) {
1654 writeOperand(*PI, false);
1661 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out);
1663 // Output all of the instructions in the basic block...
1664 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
1665 printInstruction(*I);
1669 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out);
1673 /// printInfoComment - Print a little comment after the instruction indicating
1674 /// which slot it occupies.
1676 void AssemblyWriter::printInfoComment(const Value &V) {
1677 if (V.getType() != Type::VoidTy) {
1679 TypePrinter.print(V.getType(), Out);
1682 if (!V.hasName() && !isa<Instruction>(V)) {
1684 if (const GlobalValue *GV = dyn_cast<GlobalValue>(&V))
1685 SlotNum = Machine.getGlobalSlot(GV);
1687 SlotNum = Machine.getLocalSlot(&V);
1691 Out << ':' << SlotNum; // Print out the def slot taken.
1693 Out << " [#uses=" << V.getNumUses() << ']'; // Output # uses
1697 // This member is called for each Instruction in a function..
1698 void AssemblyWriter::printInstruction(const Instruction &I) {
1699 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);
1703 // Print out name if it exists...
1705 PrintLLVMName(Out, &I);
1707 } else if (I.getType() != Type::VoidTy) {
1708 // Print out the def slot taken.
1709 int SlotNum = Machine.getLocalSlot(&I);
1711 Out << "<badref> = ";
1713 Out << '%' << SlotNum << " = ";
1716 // If this is a volatile load or store, print out the volatile marker.
1717 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) ||
1718 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile())) {
1720 } else if (isa<CallInst>(I) && cast<CallInst>(I).isTailCall()) {
1721 // If this is a call, check if it's a tail call.
1725 // Print out the opcode...
1726 Out << I.getOpcodeName();
1728 // Print out optimization information.
1729 WriteOptimizationInfo(Out, &I);
1731 // Print out the compare instruction predicates
1732 if (const CmpInst *CI = dyn_cast<CmpInst>(&I))
1733 Out << ' ' << getPredicateText(CI->getPredicate());
1735 // Print out the type of the operands...
1736 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
1738 // Special case conditional branches to swizzle the condition out to the front
1739 if (isa<BranchInst>(I) && cast<BranchInst>(I).isConditional()) {
1740 BranchInst &BI(cast<BranchInst>(I));
1742 writeOperand(BI.getCondition(), true);
1744 writeOperand(BI.getSuccessor(0), true);
1746 writeOperand(BI.getSuccessor(1), true);
1748 } else if (isa<SwitchInst>(I)) {
1749 // Special case switch statement to get formatting nice and correct...
1751 writeOperand(Operand , true);
1753 writeOperand(I.getOperand(1), true);
1756 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
1758 writeOperand(I.getOperand(op ), true);
1760 writeOperand(I.getOperand(op+1), true);
1763 } else if (isa<PHINode>(I)) {
1765 TypePrinter.print(I.getType(), Out);
1768 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
1769 if (op) Out << ", ";
1771 writeOperand(I.getOperand(op ), false); Out << ", ";
1772 writeOperand(I.getOperand(op+1), false); Out << " ]";
1774 } else if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(&I)) {
1776 writeOperand(I.getOperand(0), true);
1777 for (const unsigned *i = EVI->idx_begin(), *e = EVI->idx_end(); i != e; ++i)
1779 } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(&I)) {
1781 writeOperand(I.getOperand(0), true); Out << ", ";
1782 writeOperand(I.getOperand(1), true);
1783 for (const unsigned *i = IVI->idx_begin(), *e = IVI->idx_end(); i != e; ++i)
1785 } else if (isa<ReturnInst>(I) && !Operand) {
1787 } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
1788 // Print the calling convention being used.
1789 switch (CI->getCallingConv()) {
1790 case CallingConv::C: break; // default
1791 case CallingConv::Fast: Out << " fastcc"; break;
1792 case CallingConv::Cold: Out << " coldcc"; break;
1793 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1794 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1795 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1796 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1797 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1798 default: Out << " cc" << CI->getCallingConv(); break;
1801 const PointerType *PTy = cast<PointerType>(Operand->getType());
1802 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1803 const Type *RetTy = FTy->getReturnType();
1804 const AttrListPtr &PAL = CI->getAttributes();
1806 if (PAL.getRetAttributes() != Attribute::None)
1807 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1809 // If possible, print out the short form of the call instruction. We can
1810 // only do this if the first argument is a pointer to a nonvararg function,
1811 // and if the return type is not a pointer to a function.
1814 if (!FTy->isVarArg() &&
1815 (!isa<PointerType>(RetTy) ||
1816 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1817 TypePrinter.print(RetTy, Out);
1819 writeOperand(Operand, false);
1821 writeOperand(Operand, true);
1824 for (unsigned op = 1, Eop = I.getNumOperands(); op < Eop; ++op) {
1827 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op));
1830 if (PAL.getFnAttributes() != Attribute::None)
1831 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1832 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
1833 const PointerType *PTy = cast<PointerType>(Operand->getType());
1834 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
1835 const Type *RetTy = FTy->getReturnType();
1836 const AttrListPtr &PAL = II->getAttributes();
1838 // Print the calling convention being used.
1839 switch (II->getCallingConv()) {
1840 case CallingConv::C: break; // default
1841 case CallingConv::Fast: Out << " fastcc"; break;
1842 case CallingConv::Cold: Out << " coldcc"; break;
1843 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break;
1844 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break;
1845 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break;
1846 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break;
1847 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break;
1848 default: Out << " cc" << II->getCallingConv(); break;
1851 if (PAL.getRetAttributes() != Attribute::None)
1852 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes());
1854 // If possible, print out the short form of the invoke instruction. We can
1855 // only do this if the first argument is a pointer to a nonvararg function,
1856 // and if the return type is not a pointer to a function.
1859 if (!FTy->isVarArg() &&
1860 (!isa<PointerType>(RetTy) ||
1861 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
1862 TypePrinter.print(RetTy, Out);
1864 writeOperand(Operand, false);
1866 writeOperand(Operand, true);
1869 for (unsigned op = 3, Eop = I.getNumOperands(); op < Eop; ++op) {
1872 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op-2));
1876 if (PAL.getFnAttributes() != Attribute::None)
1877 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes());
1879 Out << "\n\t\t\tto ";
1880 writeOperand(II->getNormalDest(), true);
1882 writeOperand(II->getUnwindDest(), true);
1884 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
1886 TypePrinter.print(AI->getType()->getElementType(), Out);
1887 if (AI->isArrayAllocation()) {
1889 writeOperand(AI->getArraySize(), true);
1891 if (AI->getAlignment()) {
1892 Out << ", align " << AI->getAlignment();
1894 } else if (isa<CastInst>(I)) {
1897 writeOperand(Operand, true); // Work with broken code
1900 TypePrinter.print(I.getType(), Out);
1901 } else if (isa<VAArgInst>(I)) {
1904 writeOperand(Operand, true); // Work with broken code
1907 TypePrinter.print(I.getType(), Out);
1908 } else if (Operand) { // Print the normal way.
1910 // PrintAllTypes - Instructions who have operands of all the same type
1911 // omit the type from all but the first operand. If the instruction has
1912 // different type operands (for example br), then they are all printed.
1913 bool PrintAllTypes = false;
1914 const Type *TheType = Operand->getType();
1916 // Select, Store and ShuffleVector always print all types.
1917 if (isa<SelectInst>(I) || isa<StoreInst>(I) || isa<ShuffleVectorInst>(I)
1918 || isa<ReturnInst>(I)) {
1919 PrintAllTypes = true;
1921 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
1922 Operand = I.getOperand(i);
1923 // note that Operand shouldn't be null, but the test helps make dump()
1924 // more tolerant of malformed IR
1925 if (Operand && Operand->getType() != TheType) {
1926 PrintAllTypes = true; // We have differing types! Print them all!
1932 if (!PrintAllTypes) {
1934 TypePrinter.print(TheType, Out);
1938 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
1940 writeOperand(I.getOperand(i), PrintAllTypes);
1944 // Print post operand alignment for load/store
1945 if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) {
1946 Out << ", align " << cast<LoadInst>(I).getAlignment();
1947 } else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) {
1948 Out << ", align " << cast<StoreInst>(I).getAlignment();
1951 printInfoComment(I);
1955 //===----------------------------------------------------------------------===//
1956 // External Interface declarations
1957 //===----------------------------------------------------------------------===//
1959 void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
1960 raw_os_ostream OS(o);
1963 void Module::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
1964 SlotTracker SlotTable(this);
1965 AssemblyWriter W(OS, SlotTable, this, AAW);
1969 void Type::print(std::ostream &o) const {
1970 raw_os_ostream OS(o);
1974 void Type::print(raw_ostream &OS) const {
1976 OS << "<null Type>";
1979 TypePrinting().print(this, OS);
1982 void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
1984 OS << "printing a <null> value\n";
1987 if (const Instruction *I = dyn_cast<Instruction>(this)) {
1988 const Function *F = I->getParent() ? I->getParent()->getParent() : 0;
1989 SlotTracker SlotTable(F);
1990 AssemblyWriter W(OS, SlotTable, F ? F->getParent() : 0, AAW);
1992 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(this)) {
1993 SlotTracker SlotTable(BB->getParent());
1994 AssemblyWriter W(OS, SlotTable,
1995 BB->getParent() ? BB->getParent()->getParent() : 0, AAW);
1997 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) {
1998 SlotTracker SlotTable(GV->getParent());
1999 AssemblyWriter W(OS, SlotTable, GV->getParent(), AAW);
2001 } else if (const MDString *MDS = dyn_cast<MDString>(this)) {
2002 TypePrinting TypePrinter;
2003 TypePrinter.print(MDS->getType(), OS);
2006 PrintEscapedString(MDS->getString(), OS);
2008 } else if (const MDNode *N = dyn_cast<MDNode>(this)) {
2009 SlotTracker SlotTable(N);
2010 TypePrinting TypePrinter;
2011 SlotTable.initialize();
2012 WriteMDNodes(OS, TypePrinter, SlotTable);
2013 } else if (const Constant *C = dyn_cast<Constant>(this)) {
2014 TypePrinting TypePrinter;
2015 TypePrinter.print(C->getType(), OS);
2017 WriteConstantInt(OS, C, TypePrinter, 0);
2018 } else if (const Argument *A = dyn_cast<Argument>(this)) {
2019 WriteAsOperand(OS, this, true,
2020 A->getParent() ? A->getParent()->getParent() : 0);
2021 } else if (isa<InlineAsm>(this)) {
2022 WriteAsOperand(OS, this, true, 0);
2024 llvm_unreachable("Unknown value to print out!");
2028 void Value::print(std::ostream &O, AssemblyAnnotationWriter *AAW) const {
2029 raw_os_ostream OS(O);
2033 // Value::dump - allow easy printing of Values from the debugger.
2034 void Value::dump() const { print(errs()); errs() << '\n'; }
2036 // Type::dump - allow easy printing of Types from the debugger.
2037 // This one uses type names from the given context module
2038 void Type::dump(const Module *Context) const {
2039 WriteTypeSymbolic(errs(), this, Context);
2043 // Type::dump - allow easy printing of Types from the debugger.
2044 void Type::dump() const { dump(0); }
2046 // Module::dump() - Allow printing of Modules from the debugger.
2047 void Module::dump() const { print(errs(), 0); }