AsmWriter.cpp revision dac237e18209b697a8ba122d0ddd9cad4dfba1f8
1//===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This library implements the functionality defined in llvm/Assembly/Writer.h 11// 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. 14// 15//===----------------------------------------------------------------------===// 16 17#include "llvm/Assembly/Writer.h" 18#include "llvm/Assembly/PrintModulePass.h" 19#include "llvm/Assembly/AsmAnnotationWriter.h" 20#include "llvm/CallingConv.h" 21#include "llvm/Constants.h" 22#include "llvm/DerivedTypes.h" 23#include "llvm/InlineAsm.h" 24#include "llvm/Instruction.h" 25#include "llvm/Instructions.h" 26#include "llvm/MDNode.h" 27#include "llvm/Module.h" 28#include "llvm/ValueSymbolTable.h" 29#include "llvm/TypeSymbolTable.h" 30#include "llvm/ADT/DenseSet.h" 31#include "llvm/ADT/StringExtras.h" 32#include "llvm/ADT/STLExtras.h" 33#include "llvm/Support/CFG.h" 34#include "llvm/Support/ErrorHandling.h" 35#include "llvm/Support/MathExtras.h" 36#include "llvm/Support/Streams.h" 37#include "llvm/Support/raw_ostream.h" 38#include <algorithm> 39#include <cctype> 40#include <map> 41using namespace llvm; 42 43// Make virtual table appear in this compilation unit. 44AssemblyAnnotationWriter::~AssemblyAnnotationWriter() {} 45 46//===----------------------------------------------------------------------===// 47// Helper Functions 48//===----------------------------------------------------------------------===// 49 50static const Module *getModuleFromVal(const Value *V) { 51 if (const Argument *MA = dyn_cast<Argument>(V)) 52 return MA->getParent() ? MA->getParent()->getParent() : 0; 53 54 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V)) 55 return BB->getParent() ? BB->getParent()->getParent() : 0; 56 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; 60 } 61 62 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) 63 return GV->getParent(); 64 return 0; 65} 66 67// PrintEscapedString - Print each character of the specified string, escaping 68// it if it is not printable or if it is an escape char. 69static void PrintEscapedString(const char *Str, unsigned Length, 70 raw_ostream &Out) { 71 for (unsigned i = 0; i != Length; ++i) { 72 unsigned char C = Str[i]; 73 if (isprint(C) && C != '\\' && C != '"') 74 Out << C; 75 else 76 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F); 77 } 78} 79 80// PrintEscapedString - Print each character of the specified string, escaping 81// it if it is not printable or if it is an escape char. 82static void PrintEscapedString(const std::string &Str, raw_ostream &Out) { 83 PrintEscapedString(Str.c_str(), Str.size(), Out); 84} 85 86enum PrefixType { 87 GlobalPrefix, 88 LabelPrefix, 89 LocalPrefix, 90 NoPrefix 91}; 92 93/// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either 94/// prefixed with % (if the string only contains simple characters) or is 95/// surrounded with ""'s (if it has special chars in it). Print it out. 96static void PrintLLVMName(raw_ostream &OS, const char *NameStr, 97 unsigned NameLen, PrefixType Prefix) { 98 assert(NameStr && "Cannot get empty name!"); 99 switch (Prefix) { 100 default: assert(0 && "Bad prefix!"); 101 case NoPrefix: break; 102 case GlobalPrefix: OS << '@'; break; 103 case LabelPrefix: break; 104 case LocalPrefix: OS << '%'; break; 105 } 106 107 // Scan the name to see if it needs quotes first. 108 bool NeedsQuotes = isdigit(NameStr[0]); 109 if (!NeedsQuotes) { 110 for (unsigned i = 0; i != NameLen; ++i) { 111 char C = NameStr[i]; 112 if (!isalnum(C) && C != '-' && C != '.' && C != '_') { 113 NeedsQuotes = true; 114 break; 115 } 116 } 117 } 118 119 // If we didn't need any quotes, just write out the name in one blast. 120 if (!NeedsQuotes) { 121 OS.write(NameStr, NameLen); 122 return; 123 } 124 125 // Okay, we need quotes. Output the quotes and escape any scary characters as 126 // needed. 127 OS << '"'; 128 PrintEscapedString(NameStr, NameLen, OS); 129 OS << '"'; 130} 131 132/// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either 133/// prefixed with % (if the string only contains simple characters) or is 134/// surrounded with ""'s (if it has special chars in it). Print it out. 135static void PrintLLVMName(raw_ostream &OS, const Value *V) { 136 PrintLLVMName(OS, V->getNameStart(), V->getNameLen(), 137 isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix); 138} 139 140//===----------------------------------------------------------------------===// 141// TypePrinting Class: Type printing machinery 142//===----------------------------------------------------------------------===// 143 144static DenseMap<const Type *, std::string> &getTypeNamesMap(void *M) { 145 return *static_cast<DenseMap<const Type *, std::string>*>(M); 146} 147 148void TypePrinting::clear() { 149 getTypeNamesMap(TypeNames).clear(); 150} 151 152bool TypePrinting::hasTypeName(const Type *Ty) const { 153 return getTypeNamesMap(TypeNames).count(Ty); 154} 155 156void TypePrinting::addTypeName(const Type *Ty, const std::string &N) { 157 getTypeNamesMap(TypeNames).insert(std::make_pair(Ty, N)); 158} 159 160 161TypePrinting::TypePrinting() { 162 TypeNames = new DenseMap<const Type *, std::string>(); 163} 164 165TypePrinting::~TypePrinting() { 166 delete &getTypeNamesMap(TypeNames); 167} 168 169/// CalcTypeName - Write the specified type to the specified raw_ostream, making 170/// use of type names or up references to shorten the type name where possible. 171void TypePrinting::CalcTypeName(const Type *Ty, 172 SmallVectorImpl<const Type *> &TypeStack, 173 raw_ostream &OS, bool IgnoreTopLevelName) { 174 // Check to see if the type is named. 175 if (!IgnoreTopLevelName) { 176 DenseMap<const Type *, std::string> &TM = getTypeNamesMap(TypeNames); 177 DenseMap<const Type *, std::string>::iterator I = TM.find(Ty); 178 if (I != TM.end()) { 179 OS << I->second; 180 return; 181 } 182 } 183 184 // Check to see if the Type is already on the stack... 185 unsigned Slot = 0, CurSize = TypeStack.size(); 186 while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type 187 188 // This is another base case for the recursion. In this case, we know 189 // that we have looped back to a type that we have previously visited. 190 // Generate the appropriate upreference to handle this. 191 if (Slot < CurSize) { 192 OS << '\\' << unsigned(CurSize-Slot); // Here's the upreference 193 return; 194 } 195 196 TypeStack.push_back(Ty); // Recursive case: Add us to the stack.. 197 198 switch (Ty->getTypeID()) { 199 case Type::VoidTyID: OS << "void"; break; 200 case Type::FloatTyID: OS << "float"; break; 201 case Type::DoubleTyID: OS << "double"; break; 202 case Type::X86_FP80TyID: OS << "x86_fp80"; break; 203 case Type::FP128TyID: OS << "fp128"; break; 204 case Type::PPC_FP128TyID: OS << "ppc_fp128"; break; 205 case Type::LabelTyID: OS << "label"; break; 206 case Type::MetadataTyID: OS << "metadata"; break; 207 case Type::IntegerTyID: 208 OS << 'i' << cast<IntegerType>(Ty)->getBitWidth(); 209 break; 210 211 case Type::FunctionTyID: { 212 const FunctionType *FTy = cast<FunctionType>(Ty); 213 CalcTypeName(FTy->getReturnType(), TypeStack, OS); 214 OS << " ("; 215 for (FunctionType::param_iterator I = FTy->param_begin(), 216 E = FTy->param_end(); I != E; ++I) { 217 if (I != FTy->param_begin()) 218 OS << ", "; 219 CalcTypeName(*I, TypeStack, OS); 220 } 221 if (FTy->isVarArg()) { 222 if (FTy->getNumParams()) OS << ", "; 223 OS << "..."; 224 } 225 OS << ')'; 226 break; 227 } 228 case Type::StructTyID: { 229 const StructType *STy = cast<StructType>(Ty); 230 if (STy->isPacked()) 231 OS << '<'; 232 OS << "{ "; 233 for (StructType::element_iterator I = STy->element_begin(), 234 E = STy->element_end(); I != E; ++I) { 235 CalcTypeName(*I, TypeStack, OS); 236 if (next(I) != STy->element_end()) 237 OS << ','; 238 OS << ' '; 239 } 240 OS << '}'; 241 if (STy->isPacked()) 242 OS << '>'; 243 break; 244 } 245 case Type::PointerTyID: { 246 const PointerType *PTy = cast<PointerType>(Ty); 247 CalcTypeName(PTy->getElementType(), TypeStack, OS); 248 if (unsigned AddressSpace = PTy->getAddressSpace()) 249 OS << " addrspace(" << AddressSpace << ')'; 250 OS << '*'; 251 break; 252 } 253 case Type::ArrayTyID: { 254 const ArrayType *ATy = cast<ArrayType>(Ty); 255 OS << '[' << ATy->getNumElements() << " x "; 256 CalcTypeName(ATy->getElementType(), TypeStack, OS); 257 OS << ']'; 258 break; 259 } 260 case Type::VectorTyID: { 261 const VectorType *PTy = cast<VectorType>(Ty); 262 OS << "<" << PTy->getNumElements() << " x "; 263 CalcTypeName(PTy->getElementType(), TypeStack, OS); 264 OS << '>'; 265 break; 266 } 267 case Type::OpaqueTyID: 268 OS << "opaque"; 269 break; 270 default: 271 OS << "<unrecognized-type>"; 272 break; 273 } 274 275 TypeStack.pop_back(); // Remove self from stack. 276} 277 278/// printTypeInt - The internal guts of printing out a type that has a 279/// potentially named portion. 280/// 281void TypePrinting::print(const Type *Ty, raw_ostream &OS, 282 bool IgnoreTopLevelName) { 283 // Check to see if the type is named. 284 DenseMap<const Type*, std::string> &TM = getTypeNamesMap(TypeNames); 285 if (!IgnoreTopLevelName) { 286 DenseMap<const Type*, std::string>::iterator I = TM.find(Ty); 287 if (I != TM.end()) { 288 OS << I->second; 289 return; 290 } 291 } 292 293 // Otherwise we have a type that has not been named but is a derived type. 294 // Carefully recurse the type hierarchy to print out any contained symbolic 295 // names. 296 SmallVector<const Type *, 16> TypeStack; 297 std::string TypeName; 298 299 raw_string_ostream TypeOS(TypeName); 300 CalcTypeName(Ty, TypeStack, TypeOS, IgnoreTopLevelName); 301 OS << TypeOS.str(); 302 303 // Cache type name for later use. 304 if (!IgnoreTopLevelName) 305 TM.insert(std::make_pair(Ty, TypeOS.str())); 306} 307 308namespace { 309 class TypeFinder { 310 // To avoid walking constant expressions multiple times and other IR 311 // objects, we keep several helper maps. 312 DenseSet<const Value*> VisitedConstants; 313 DenseSet<const Type*> VisitedTypes; 314 315 TypePrinting &TP; 316 std::vector<const Type*> &NumberedTypes; 317 public: 318 TypeFinder(TypePrinting &tp, std::vector<const Type*> &numberedTypes) 319 : TP(tp), NumberedTypes(numberedTypes) {} 320 321 void Run(const Module &M) { 322 // Get types from the type symbol table. This gets opaque types referened 323 // only through derived named types. 324 const TypeSymbolTable &ST = M.getTypeSymbolTable(); 325 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end(); 326 TI != E; ++TI) 327 IncorporateType(TI->second); 328 329 // Get types from global variables. 330 for (Module::const_global_iterator I = M.global_begin(), 331 E = M.global_end(); I != E; ++I) { 332 IncorporateType(I->getType()); 333 if (I->hasInitializer()) 334 IncorporateValue(I->getInitializer()); 335 } 336 337 // Get types from aliases. 338 for (Module::const_alias_iterator I = M.alias_begin(), 339 E = M.alias_end(); I != E; ++I) { 340 IncorporateType(I->getType()); 341 IncorporateValue(I->getAliasee()); 342 } 343 344 // Get types from functions. 345 for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) { 346 IncorporateType(FI->getType()); 347 348 for (Function::const_iterator BB = FI->begin(), E = FI->end(); 349 BB != E;++BB) 350 for (BasicBlock::const_iterator II = BB->begin(), 351 E = BB->end(); II != E; ++II) { 352 const Instruction &I = *II; 353 // Incorporate the type of the instruction and all its operands. 354 IncorporateType(I.getType()); 355 for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end(); 356 OI != OE; ++OI) 357 IncorporateValue(*OI); 358 } 359 } 360 } 361 362 private: 363 void IncorporateType(const Type *Ty) { 364 // Check to see if we're already visited this type. 365 if (!VisitedTypes.insert(Ty).second) 366 return; 367 368 // If this is a structure or opaque type, add a name for the type. 369 if (((isa<StructType>(Ty) && cast<StructType>(Ty)->getNumElements()) 370 || isa<OpaqueType>(Ty)) && !TP.hasTypeName(Ty)) { 371 TP.addTypeName(Ty, "%"+utostr(unsigned(NumberedTypes.size()))); 372 NumberedTypes.push_back(Ty); 373 } 374 375 // Recursively walk all contained types. 376 for (Type::subtype_iterator I = Ty->subtype_begin(), 377 E = Ty->subtype_end(); I != E; ++I) 378 IncorporateType(*I); 379 } 380 381 /// IncorporateValue - This method is used to walk operand lists finding 382 /// types hiding in constant expressions and other operands that won't be 383 /// walked in other ways. GlobalValues, basic blocks, instructions, and 384 /// inst operands are all explicitly enumerated. 385 void IncorporateValue(const Value *V) { 386 if (V == 0 || !isa<Constant>(V) || isa<GlobalValue>(V)) return; 387 388 // Already visited? 389 if (!VisitedConstants.insert(V).second) 390 return; 391 392 // Check this type. 393 IncorporateType(V->getType()); 394 395 // Look in operands for types. 396 const Constant *C = cast<Constant>(V); 397 for (Constant::const_op_iterator I = C->op_begin(), 398 E = C->op_end(); I != E;++I) 399 IncorporateValue(*I); 400 } 401 }; 402} // end anonymous namespace 403 404 405/// AddModuleTypesToPrinter - Add all of the symbolic type names for types in 406/// the specified module to the TypePrinter and all numbered types to it and the 407/// NumberedTypes table. 408static void AddModuleTypesToPrinter(TypePrinting &TP, 409 std::vector<const Type*> &NumberedTypes, 410 const Module *M) { 411 if (M == 0) return; 412 413 // If the module has a symbol table, take all global types and stuff their 414 // names into the TypeNames map. 415 const TypeSymbolTable &ST = M->getTypeSymbolTable(); 416 for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end(); 417 TI != E; ++TI) { 418 const Type *Ty = cast<Type>(TI->second); 419 420 // As a heuristic, don't insert pointer to primitive types, because 421 // they are used too often to have a single useful name. 422 if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) { 423 const Type *PETy = PTy->getElementType(); 424 if ((PETy->isPrimitiveType() || PETy->isInteger()) && 425 !isa<OpaqueType>(PETy)) 426 continue; 427 } 428 429 // Likewise don't insert primitives either. 430 if (Ty->isInteger() || Ty->isPrimitiveType()) 431 continue; 432 433 // Get the name as a string and insert it into TypeNames. 434 std::string NameStr; 435 raw_string_ostream NameOS(NameStr); 436 PrintLLVMName(NameOS, TI->first.c_str(), TI->first.length(), LocalPrefix); 437 TP.addTypeName(Ty, NameOS.str()); 438 } 439 440 // Walk the entire module to find references to unnamed structure and opaque 441 // types. This is required for correctness by opaque types (because multiple 442 // uses of an unnamed opaque type needs to be referred to by the same ID) and 443 // it shrinks complex recursive structure types substantially in some cases. 444 TypeFinder(TP, NumberedTypes).Run(*M); 445} 446 447 448/// WriteTypeSymbolic - This attempts to write the specified type as a symbolic 449/// type, iff there is an entry in the modules symbol table for the specified 450/// type or one of it's component types. 451/// 452void llvm::WriteTypeSymbolic(raw_ostream &OS, const Type *Ty, const Module *M) { 453 TypePrinting Printer; 454 std::vector<const Type*> NumberedTypes; 455 AddModuleTypesToPrinter(Printer, NumberedTypes, M); 456 Printer.print(Ty, OS); 457} 458 459//===----------------------------------------------------------------------===// 460// SlotTracker Class: Enumerate slot numbers for unnamed values 461//===----------------------------------------------------------------------===// 462 463namespace { 464 465/// This class provides computation of slot numbers for LLVM Assembly writing. 466/// 467class SlotTracker { 468public: 469 /// ValueMap - A mapping of Values to slot numbers 470 typedef DenseMap<const Value*, unsigned> ValueMap; 471 472private: 473 /// TheModule - The module for which we are holding slot numbers 474 const Module* TheModule; 475 476 /// TheFunction - The function for which we are holding slot numbers 477 const Function* TheFunction; 478 bool FunctionProcessed; 479 480 /// mMap - The TypePlanes map for the module level data 481 ValueMap mMap; 482 unsigned mNext; 483 484 /// fMap - The TypePlanes map for the function level data 485 ValueMap fMap; 486 unsigned fNext; 487 488public: 489 /// Construct from a module 490 explicit SlotTracker(const Module *M); 491 /// Construct from a function, starting out in incorp state. 492 explicit SlotTracker(const Function *F); 493 494 /// Return the slot number of the specified value in it's type 495 /// plane. If something is not in the SlotTracker, return -1. 496 int getLocalSlot(const Value *V); 497 int getGlobalSlot(const GlobalValue *V); 498 499 /// If you'd like to deal with a function instead of just a module, use 500 /// this method to get its data into the SlotTracker. 501 void incorporateFunction(const Function *F) { 502 TheFunction = F; 503 FunctionProcessed = false; 504 } 505 506 /// After calling incorporateFunction, use this method to remove the 507 /// most recently incorporated function from the SlotTracker. This 508 /// will reset the state of the machine back to just the module contents. 509 void purgeFunction(); 510 511 // Implementation Details 512private: 513 /// This function does the actual initialization. 514 inline void initialize(); 515 516 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table. 517 void CreateModuleSlot(const GlobalValue *V); 518 519 /// CreateFunctionSlot - Insert the specified Value* into the slot table. 520 void CreateFunctionSlot(const Value *V); 521 522 /// Add all of the module level global variables (and their initializers) 523 /// and function declarations, but not the contents of those functions. 524 void processModule(); 525 526 /// Add all of the functions arguments, basic blocks, and instructions 527 void processFunction(); 528 529 SlotTracker(const SlotTracker &); // DO NOT IMPLEMENT 530 void operator=(const SlotTracker &); // DO NOT IMPLEMENT 531}; 532 533} // end anonymous namespace 534 535 536static SlotTracker *createSlotTracker(const Value *V) { 537 if (const Argument *FA = dyn_cast<Argument>(V)) 538 return new SlotTracker(FA->getParent()); 539 540 if (const Instruction *I = dyn_cast<Instruction>(V)) 541 return new SlotTracker(I->getParent()->getParent()); 542 543 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V)) 544 return new SlotTracker(BB->getParent()); 545 546 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) 547 return new SlotTracker(GV->getParent()); 548 549 if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(V)) 550 return new SlotTracker(GA->getParent()); 551 552 if (const Function *Func = dyn_cast<Function>(V)) 553 return new SlotTracker(Func); 554 555 return 0; 556} 557 558#if 0 559#define ST_DEBUG(X) cerr << X 560#else 561#define ST_DEBUG(X) 562#endif 563 564// Module level constructor. Causes the contents of the Module (sans functions) 565// to be added to the slot table. 566SlotTracker::SlotTracker(const Module *M) 567 : TheModule(M), TheFunction(0), FunctionProcessed(false), mNext(0), fNext(0) { 568} 569 570// Function level constructor. Causes the contents of the Module and the one 571// function provided to be added to the slot table. 572SlotTracker::SlotTracker(const Function *F) 573 : TheModule(F ? F->getParent() : 0), TheFunction(F), FunctionProcessed(false), 574 mNext(0), fNext(0) { 575} 576 577inline void SlotTracker::initialize() { 578 if (TheModule) { 579 processModule(); 580 TheModule = 0; ///< Prevent re-processing next time we're called. 581 } 582 583 if (TheFunction && !FunctionProcessed) 584 processFunction(); 585} 586 587// Iterate through all the global variables, functions, and global 588// variable initializers and create slots for them. 589void SlotTracker::processModule() { 590 ST_DEBUG("begin processModule!\n"); 591 592 // Add all of the unnamed global variables to the value table. 593 for (Module::const_global_iterator I = TheModule->global_begin(), 594 E = TheModule->global_end(); I != E; ++I) 595 if (!I->hasName()) 596 CreateModuleSlot(I); 597 598 // Add all the unnamed functions to the table. 599 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end(); 600 I != E; ++I) 601 if (!I->hasName()) 602 CreateModuleSlot(I); 603 604 ST_DEBUG("end processModule!\n"); 605} 606 607 608// Process the arguments, basic blocks, and instructions of a function. 609void SlotTracker::processFunction() { 610 ST_DEBUG("begin processFunction!\n"); 611 fNext = 0; 612 613 // Add all the function arguments with no names. 614 for(Function::const_arg_iterator AI = TheFunction->arg_begin(), 615 AE = TheFunction->arg_end(); AI != AE; ++AI) 616 if (!AI->hasName()) 617 CreateFunctionSlot(AI); 618 619 ST_DEBUG("Inserting Instructions:\n"); 620 621 // Add all of the basic blocks and instructions with no names. 622 for (Function::const_iterator BB = TheFunction->begin(), 623 E = TheFunction->end(); BB != E; ++BB) { 624 if (!BB->hasName()) 625 CreateFunctionSlot(BB); 626 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) 627 if (I->getType() != Type::VoidTy && !I->hasName()) 628 CreateFunctionSlot(I); 629 } 630 631 FunctionProcessed = true; 632 633 ST_DEBUG("end processFunction!\n"); 634} 635 636/// Clean up after incorporating a function. This is the only way to get out of 637/// the function incorporation state that affects get*Slot/Create*Slot. Function 638/// incorporation state is indicated by TheFunction != 0. 639void SlotTracker::purgeFunction() { 640 ST_DEBUG("begin purgeFunction!\n"); 641 fMap.clear(); // Simply discard the function level map 642 TheFunction = 0; 643 FunctionProcessed = false; 644 ST_DEBUG("end purgeFunction!\n"); 645} 646 647/// getGlobalSlot - Get the slot number of a global value. 648int SlotTracker::getGlobalSlot(const GlobalValue *V) { 649 // Check for uninitialized state and do lazy initialization. 650 initialize(); 651 652 // Find the type plane in the module map 653 ValueMap::iterator MI = mMap.find(V); 654 return MI == mMap.end() ? -1 : (int)MI->second; 655} 656 657 658/// getLocalSlot - Get the slot number for a value that is local to a function. 659int SlotTracker::getLocalSlot(const Value *V) { 660 assert(!isa<Constant>(V) && "Can't get a constant or global slot with this!"); 661 662 // Check for uninitialized state and do lazy initialization. 663 initialize(); 664 665 ValueMap::iterator FI = fMap.find(V); 666 return FI == fMap.end() ? -1 : (int)FI->second; 667} 668 669 670/// CreateModuleSlot - Insert the specified GlobalValue* into the slot table. 671void SlotTracker::CreateModuleSlot(const GlobalValue *V) { 672 assert(V && "Can't insert a null Value into SlotTracker!"); 673 assert(V->getType() != Type::VoidTy && "Doesn't need a slot!"); 674 assert(!V->hasName() && "Doesn't need a slot!"); 675 676 unsigned DestSlot = mNext++; 677 mMap[V] = DestSlot; 678 679 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" << 680 DestSlot << " ["); 681 // G = Global, F = Function, A = Alias, o = other 682 ST_DEBUG((isa<GlobalVariable>(V) ? 'G' : 683 (isa<Function>(V) ? 'F' : 684 (isa<GlobalAlias>(V) ? 'A' : 'o'))) << "]\n"); 685} 686 687 688/// CreateSlot - Create a new slot for the specified value if it has no name. 689void SlotTracker::CreateFunctionSlot(const Value *V) { 690 assert(V->getType() != Type::VoidTy && !V->hasName() && 691 "Doesn't need a slot!"); 692 693 unsigned DestSlot = fNext++; 694 fMap[V] = DestSlot; 695 696 // G = Global, F = Function, o = other 697 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" << 698 DestSlot << " [o]\n"); 699} 700 701 702 703//===----------------------------------------------------------------------===// 704// AsmWriter Implementation 705//===----------------------------------------------------------------------===// 706 707static void WriteAsOperandInternal(raw_ostream &Out, const Value *V, 708 TypePrinting &TypePrinter, 709 SlotTracker *Machine); 710 711 712 713static const char *getPredicateText(unsigned predicate) { 714 const char * pred = "unknown"; 715 switch (predicate) { 716 case FCmpInst::FCMP_FALSE: pred = "false"; break; 717 case FCmpInst::FCMP_OEQ: pred = "oeq"; break; 718 case FCmpInst::FCMP_OGT: pred = "ogt"; break; 719 case FCmpInst::FCMP_OGE: pred = "oge"; break; 720 case FCmpInst::FCMP_OLT: pred = "olt"; break; 721 case FCmpInst::FCMP_OLE: pred = "ole"; break; 722 case FCmpInst::FCMP_ONE: pred = "one"; break; 723 case FCmpInst::FCMP_ORD: pred = "ord"; break; 724 case FCmpInst::FCMP_UNO: pred = "uno"; break; 725 case FCmpInst::FCMP_UEQ: pred = "ueq"; break; 726 case FCmpInst::FCMP_UGT: pred = "ugt"; break; 727 case FCmpInst::FCMP_UGE: pred = "uge"; break; 728 case FCmpInst::FCMP_ULT: pred = "ult"; break; 729 case FCmpInst::FCMP_ULE: pred = "ule"; break; 730 case FCmpInst::FCMP_UNE: pred = "une"; break; 731 case FCmpInst::FCMP_TRUE: pred = "true"; break; 732 case ICmpInst::ICMP_EQ: pred = "eq"; break; 733 case ICmpInst::ICMP_NE: pred = "ne"; break; 734 case ICmpInst::ICMP_SGT: pred = "sgt"; break; 735 case ICmpInst::ICMP_SGE: pred = "sge"; break; 736 case ICmpInst::ICMP_SLT: pred = "slt"; break; 737 case ICmpInst::ICMP_SLE: pred = "sle"; break; 738 case ICmpInst::ICMP_UGT: pred = "ugt"; break; 739 case ICmpInst::ICMP_UGE: pred = "uge"; break; 740 case ICmpInst::ICMP_ULT: pred = "ult"; break; 741 case ICmpInst::ICMP_ULE: pred = "ule"; break; 742 } 743 return pred; 744} 745 746static void WriteConstantInt(raw_ostream &Out, const Constant *CV, 747 TypePrinting &TypePrinter, SlotTracker *Machine) { 748 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) { 749 if (CI->getType() == Type::Int1Ty) { 750 Out << (CI->getZExtValue() ? "true" : "false"); 751 return; 752 } 753 Out << CI->getValue(); 754 return; 755 } 756 757 if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) { 758 if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble || 759 &CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle) { 760 // We would like to output the FP constant value in exponential notation, 761 // but we cannot do this if doing so will lose precision. Check here to 762 // make sure that we only output it in exponential format if we can parse 763 // the value back and get the same value. 764 // 765 bool ignored; 766 bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble; 767 double Val = isDouble ? CFP->getValueAPF().convertToDouble() : 768 CFP->getValueAPF().convertToFloat(); 769 std::string StrVal = ftostr(CFP->getValueAPF()); 770 771 // Check to make sure that the stringized number is not some string like 772 // "Inf" or NaN, that atof will accept, but the lexer will not. Check 773 // that the string matches the "[-+]?[0-9]" regex. 774 // 775 if ((StrVal[0] >= '0' && StrVal[0] <= '9') || 776 ((StrVal[0] == '-' || StrVal[0] == '+') && 777 (StrVal[1] >= '0' && StrVal[1] <= '9'))) { 778 // Reparse stringized version! 779 if (atof(StrVal.c_str()) == Val) { 780 Out << StrVal; 781 return; 782 } 783 } 784 // Otherwise we could not reparse it to exactly the same value, so we must 785 // output the string in hexadecimal format! Note that loading and storing 786 // floating point types changes the bits of NaNs on some hosts, notably 787 // x86, so we must not use these types. 788 assert(sizeof(double) == sizeof(uint64_t) && 789 "assuming that double is 64 bits!"); 790 char Buffer[40]; 791 APFloat apf = CFP->getValueAPF(); 792 // Floats are represented in ASCII IR as double, convert. 793 if (!isDouble) 794 apf.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, 795 &ignored); 796 Out << "0x" << 797 utohex_buffer(uint64_t(apf.bitcastToAPInt().getZExtValue()), 798 Buffer+40); 799 return; 800 } 801 802 // Some form of long double. These appear as a magic letter identifying 803 // the type, then a fixed number of hex digits. 804 Out << "0x"; 805 if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) { 806 Out << 'K'; 807 // api needed to prevent premature destruction 808 APInt api = CFP->getValueAPF().bitcastToAPInt(); 809 const uint64_t* p = api.getRawData(); 810 uint64_t word = p[1]; 811 int shiftcount=12; 812 int width = api.getBitWidth(); 813 for (int j=0; j<width; j+=4, shiftcount-=4) { 814 unsigned int nibble = (word>>shiftcount) & 15; 815 if (nibble < 10) 816 Out << (unsigned char)(nibble + '0'); 817 else 818 Out << (unsigned char)(nibble - 10 + 'A'); 819 if (shiftcount == 0 && j+4 < width) { 820 word = *p; 821 shiftcount = 64; 822 if (width-j-4 < 64) 823 shiftcount = width-j-4; 824 } 825 } 826 return; 827 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad) 828 Out << 'L'; 829 else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble) 830 Out << 'M'; 831 else 832 assert(0 && "Unsupported floating point type"); 833 // api needed to prevent premature destruction 834 APInt api = CFP->getValueAPF().bitcastToAPInt(); 835 const uint64_t* p = api.getRawData(); 836 uint64_t word = *p; 837 int shiftcount=60; 838 int width = api.getBitWidth(); 839 for (int j=0; j<width; j+=4, shiftcount-=4) { 840 unsigned int nibble = (word>>shiftcount) & 15; 841 if (nibble < 10) 842 Out << (unsigned char)(nibble + '0'); 843 else 844 Out << (unsigned char)(nibble - 10 + 'A'); 845 if (shiftcount == 0 && j+4 < width) { 846 word = *(++p); 847 shiftcount = 64; 848 if (width-j-4 < 64) 849 shiftcount = width-j-4; 850 } 851 } 852 return; 853 } 854 855 if (isa<ConstantAggregateZero>(CV)) { 856 Out << "zeroinitializer"; 857 return; 858 } 859 860 if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) { 861 // As a special case, print the array as a string if it is an array of 862 // i8 with ConstantInt values. 863 // 864 const Type *ETy = CA->getType()->getElementType(); 865 if (CA->isString()) { 866 Out << "c\""; 867 PrintEscapedString(CA->getAsString(), Out); 868 Out << '"'; 869 } else { // Cannot output in string format... 870 Out << '['; 871 if (CA->getNumOperands()) { 872 TypePrinter.print(ETy, Out); 873 Out << ' '; 874 WriteAsOperandInternal(Out, CA->getOperand(0), 875 TypePrinter, Machine); 876 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) { 877 Out << ", "; 878 TypePrinter.print(ETy, Out); 879 Out << ' '; 880 WriteAsOperandInternal(Out, CA->getOperand(i), TypePrinter, Machine); 881 } 882 } 883 Out << ']'; 884 } 885 return; 886 } 887 888 if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) { 889 if (CS->getType()->isPacked()) 890 Out << '<'; 891 Out << '{'; 892 unsigned N = CS->getNumOperands(); 893 if (N) { 894 Out << ' '; 895 TypePrinter.print(CS->getOperand(0)->getType(), Out); 896 Out << ' '; 897 898 WriteAsOperandInternal(Out, CS->getOperand(0), TypePrinter, Machine); 899 900 for (unsigned i = 1; i < N; i++) { 901 Out << ", "; 902 TypePrinter.print(CS->getOperand(i)->getType(), Out); 903 Out << ' '; 904 905 WriteAsOperandInternal(Out, CS->getOperand(i), TypePrinter, Machine); 906 } 907 Out << ' '; 908 } 909 910 Out << '}'; 911 if (CS->getType()->isPacked()) 912 Out << '>'; 913 return; 914 } 915 916 if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) { 917 const Type *ETy = CP->getType()->getElementType(); 918 assert(CP->getNumOperands() > 0 && 919 "Number of operands for a PackedConst must be > 0"); 920 Out << '<'; 921 TypePrinter.print(ETy, Out); 922 Out << ' '; 923 WriteAsOperandInternal(Out, CP->getOperand(0), TypePrinter, Machine); 924 for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) { 925 Out << ", "; 926 TypePrinter.print(ETy, Out); 927 Out << ' '; 928 WriteAsOperandInternal(Out, CP->getOperand(i), TypePrinter, Machine); 929 } 930 Out << '>'; 931 return; 932 } 933 934 if (isa<ConstantPointerNull>(CV)) { 935 Out << "null"; 936 return; 937 } 938 939 if (isa<UndefValue>(CV)) { 940 Out << "undef"; 941 return; 942 } 943 944 if (const MDString *S = dyn_cast<MDString>(CV)) { 945 Out << "!\""; 946 PrintEscapedString(S->begin(), S->size(), Out); 947 Out << '"'; 948 return; 949 } 950 951 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) { 952 Out << CE->getOpcodeName(); 953 if (CE->isCompare()) 954 Out << ' ' << getPredicateText(CE->getPredicate()); 955 Out << " ("; 956 957 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) { 958 TypePrinter.print((*OI)->getType(), Out); 959 Out << ' '; 960 WriteAsOperandInternal(Out, *OI, TypePrinter, Machine); 961 if (OI+1 != CE->op_end()) 962 Out << ", "; 963 } 964 965 if (CE->hasIndices()) { 966 const SmallVector<unsigned, 4> &Indices = CE->getIndices(); 967 for (unsigned i = 0, e = Indices.size(); i != e; ++i) 968 Out << ", " << Indices[i]; 969 } 970 971 if (CE->isCast()) { 972 Out << " to "; 973 TypePrinter.print(CE->getType(), Out); 974 } 975 976 Out << ')'; 977 return; 978 } 979 980 Out << "<placeholder or erroneous Constant>"; 981} 982 983 984/// WriteAsOperand - Write the name of the specified value out to the specified 985/// ostream. This can be useful when you just want to print int %reg126, not 986/// the whole instruction that generated it. 987/// 988static void WriteAsOperandInternal(raw_ostream &Out, const Value *V, 989 TypePrinting &TypePrinter, 990 SlotTracker *Machine) { 991 if (V->hasName()) { 992 PrintLLVMName(Out, V); 993 return; 994 } 995 996 const Constant *CV = dyn_cast<Constant>(V); 997 if (CV && !isa<GlobalValue>(CV)) { 998 WriteConstantInt(Out, CV, TypePrinter, Machine); 999 return; 1000 } 1001 1002 if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) { 1003 Out << "asm "; 1004 if (IA->hasSideEffects()) 1005 Out << "sideeffect "; 1006 Out << '"'; 1007 PrintEscapedString(IA->getAsmString(), Out); 1008 Out << "\", \""; 1009 PrintEscapedString(IA->getConstraintString(), Out); 1010 Out << '"'; 1011 return; 1012 } 1013 1014 char Prefix = '%'; 1015 int Slot; 1016 if (Machine) { 1017 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) { 1018 Slot = Machine->getGlobalSlot(GV); 1019 Prefix = '@'; 1020 } else { 1021 Slot = Machine->getLocalSlot(V); 1022 } 1023 } else { 1024 Machine = createSlotTracker(V); 1025 if (Machine) { 1026 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) { 1027 Slot = Machine->getGlobalSlot(GV); 1028 Prefix = '@'; 1029 } else { 1030 Slot = Machine->getLocalSlot(V); 1031 } 1032 } else { 1033 Slot = -1; 1034 } 1035 delete Machine; 1036 } 1037 1038 if (Slot != -1) 1039 Out << Prefix << Slot; 1040 else 1041 Out << "<badref>"; 1042} 1043 1044/// WriteAsOperand - Write the name of the specified value out to the specified 1045/// ostream. This can be useful when you just want to print int %reg126, not 1046/// the whole instruction that generated it. 1047/// 1048void llvm::WriteAsOperand(std::ostream &Out, const Value *V, bool PrintType, 1049 const Module *Context) { 1050 raw_os_ostream OS(Out); 1051 WriteAsOperand(OS, V, PrintType, Context); 1052} 1053 1054void llvm::WriteAsOperand(raw_ostream &Out, const Value *V, bool PrintType, 1055 const Module *Context) { 1056 if (Context == 0) Context = getModuleFromVal(V); 1057 1058 TypePrinting TypePrinter; 1059 std::vector<const Type*> NumberedTypes; 1060 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, Context); 1061 if (PrintType) { 1062 TypePrinter.print(V->getType(), Out); 1063 Out << ' '; 1064 } 1065 1066 WriteAsOperandInternal(Out, V, TypePrinter, 0); 1067} 1068 1069 1070namespace { 1071 1072class AssemblyWriter { 1073 raw_ostream &Out; 1074 SlotTracker &Machine; 1075 const Module *TheModule; 1076 TypePrinting TypePrinter; 1077 AssemblyAnnotationWriter *AnnotationWriter; 1078 std::vector<const Type*> NumberedTypes; 1079 1080 // Each MDNode is assigned unique MetadataIDNo. 1081 std::map<const MDNode *, unsigned> MDNodes; 1082 unsigned MetadataIDNo; 1083public: 1084 inline AssemblyWriter(raw_ostream &o, SlotTracker &Mac, const Module *M, 1085 AssemblyAnnotationWriter *AAW) 1086 : Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW), MetadataIDNo(0) { 1087 AddModuleTypesToPrinter(TypePrinter, NumberedTypes, M); 1088 } 1089 1090 void write(const Module *M) { printModule(M); } 1091 1092 void write(const GlobalValue *G) { 1093 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(G)) 1094 printGlobal(GV); 1095 else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(G)) 1096 printAlias(GA); 1097 else if (const Function *F = dyn_cast<Function>(G)) 1098 printFunction(F); 1099 else 1100 assert(0 && "Unknown global"); 1101 } 1102 1103 void write(const BasicBlock *BB) { printBasicBlock(BB); } 1104 void write(const Instruction *I) { printInstruction(*I); } 1105 1106 void writeOperand(const Value *Op, bool PrintType); 1107 void writeParamOperand(const Value *Operand, Attributes Attrs); 1108 void printMDNode(const MDNode *Node, bool StandAlone); 1109 1110 const Module* getModule() { return TheModule; } 1111 1112private: 1113 void printModule(const Module *M); 1114 void printTypeSymbolTable(const TypeSymbolTable &ST); 1115 void printGlobal(const GlobalVariable *GV); 1116 void printAlias(const GlobalAlias *GV); 1117 void printFunction(const Function *F); 1118 void printArgument(const Argument *FA, Attributes Attrs); 1119 void printBasicBlock(const BasicBlock *BB); 1120 void printInstruction(const Instruction &I); 1121 1122 // printInfoComment - Print a little comment after the instruction indicating 1123 // which slot it occupies. 1124 void printInfoComment(const Value &V); 1125}; 1126} // end of anonymous namespace 1127 1128 1129void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType) { 1130 if (Operand == 0) { 1131 Out << "<null operand!>"; 1132 } else { 1133 if (PrintType) { 1134 TypePrinter.print(Operand->getType(), Out); 1135 Out << ' '; 1136 } 1137 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine); 1138 } 1139} 1140 1141void AssemblyWriter::writeParamOperand(const Value *Operand, 1142 Attributes Attrs) { 1143 if (Operand == 0) { 1144 Out << "<null operand!>"; 1145 } else { 1146 // Print the type 1147 TypePrinter.print(Operand->getType(), Out); 1148 // Print parameter attributes list 1149 if (Attrs != Attribute::None) 1150 Out << ' ' << Attribute::getAsString(Attrs); 1151 Out << ' '; 1152 // Print the operand 1153 WriteAsOperandInternal(Out, Operand, TypePrinter, &Machine); 1154 } 1155} 1156 1157void AssemblyWriter::printModule(const Module *M) { 1158 if (!M->getModuleIdentifier().empty() && 1159 // Don't print the ID if it will start a new line (which would 1160 // require a comment char before it). 1161 M->getModuleIdentifier().find('\n') == std::string::npos) 1162 Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n"; 1163 1164 if (!M->getDataLayout().empty()) 1165 Out << "target datalayout = \"" << M->getDataLayout() << "\"\n"; 1166 if (!M->getTargetTriple().empty()) 1167 Out << "target triple = \"" << M->getTargetTriple() << "\"\n"; 1168 1169 if (!M->getModuleInlineAsm().empty()) { 1170 // Split the string into lines, to make it easier to read the .ll file. 1171 std::string Asm = M->getModuleInlineAsm(); 1172 size_t CurPos = 0; 1173 size_t NewLine = Asm.find_first_of('\n', CurPos); 1174 while (NewLine != std::string::npos) { 1175 // We found a newline, print the portion of the asm string from the 1176 // last newline up to this newline. 1177 Out << "module asm \""; 1178 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.begin()+NewLine), 1179 Out); 1180 Out << "\"\n"; 1181 CurPos = NewLine+1; 1182 NewLine = Asm.find_first_of('\n', CurPos); 1183 } 1184 Out << "module asm \""; 1185 PrintEscapedString(std::string(Asm.begin()+CurPos, Asm.end()), Out); 1186 Out << "\"\n"; 1187 } 1188 1189 // Loop over the dependent libraries and emit them. 1190 Module::lib_iterator LI = M->lib_begin(); 1191 Module::lib_iterator LE = M->lib_end(); 1192 if (LI != LE) { 1193 Out << "deplibs = [ "; 1194 while (LI != LE) { 1195 Out << '"' << *LI << '"'; 1196 ++LI; 1197 if (LI != LE) 1198 Out << ", "; 1199 } 1200 Out << " ]\n"; 1201 } 1202 1203 // Loop over the symbol table, emitting all id'd types. 1204 printTypeSymbolTable(M->getTypeSymbolTable()); 1205 1206 for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); 1207 I != E; ++I) 1208 printGlobal(I); 1209 1210 // Output all aliases. 1211 if (!M->alias_empty()) Out << "\n"; 1212 for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); 1213 I != E; ++I) 1214 printAlias(I); 1215 1216 // Output all of the functions. 1217 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) 1218 printFunction(I); 1219} 1220 1221static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) { 1222 switch (LT) { 1223 case GlobalValue::PrivateLinkage: Out << "private "; break; 1224 case GlobalValue::InternalLinkage: Out << "internal "; break; 1225 case GlobalValue::AvailableExternallyLinkage: 1226 Out << "available_externally "; 1227 break; 1228 case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break; 1229 case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break; 1230 case GlobalValue::WeakAnyLinkage: Out << "weak "; break; 1231 case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break; 1232 case GlobalValue::CommonLinkage: Out << "common "; break; 1233 case GlobalValue::AppendingLinkage: Out << "appending "; break; 1234 case GlobalValue::DLLImportLinkage: Out << "dllimport "; break; 1235 case GlobalValue::DLLExportLinkage: Out << "dllexport "; break; 1236 case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break; 1237 case GlobalValue::ExternalLinkage: break; 1238 case GlobalValue::GhostLinkage: 1239 LLVM_UNREACHABLE("GhostLinkage not allowed in AsmWriter!"); 1240 } 1241} 1242 1243 1244static void PrintVisibility(GlobalValue::VisibilityTypes Vis, 1245 raw_ostream &Out) { 1246 switch (Vis) { 1247 default: assert(0 && "Invalid visibility style!"); 1248 case GlobalValue::DefaultVisibility: break; 1249 case GlobalValue::HiddenVisibility: Out << "hidden "; break; 1250 case GlobalValue::ProtectedVisibility: Out << "protected "; break; 1251 } 1252} 1253 1254void AssemblyWriter::printGlobal(const GlobalVariable *GV) { 1255 if (GV->hasInitializer()) 1256 // If GV is initialized using Metadata then separate out metadata 1257 // operands used by the initializer. Note, MDNodes are not cyclic. 1258 if (MDNode *N = dyn_cast<MDNode>(GV->getInitializer())) { 1259 SmallVector<const MDNode *, 4> WorkList; 1260 // Collect MDNodes used by the initializer. 1261 for (MDNode::const_elem_iterator I = N->elem_begin(), E = N->elem_end(); 1262 I != E; ++I) { 1263 const Value *TV = *I; 1264 if (TV) 1265 if (const MDNode *NN = dyn_cast<MDNode>(TV)) 1266 WorkList.push_back(NN); 1267 } 1268 1269 // Print MDNodes used by the initializer. 1270 while (!WorkList.empty()) { 1271 const MDNode *N = WorkList.back(); WorkList.pop_back(); 1272 printMDNode(N, true); 1273 Out << '\n'; 1274 } 1275 } 1276 1277 if (GV->hasName()) { 1278 PrintLLVMName(Out, GV); 1279 Out << " = "; 1280 } 1281 1282 if (!GV->hasInitializer() && GV->hasExternalLinkage()) 1283 Out << "external "; 1284 1285 PrintLinkage(GV->getLinkage(), Out); 1286 PrintVisibility(GV->getVisibility(), Out); 1287 1288 if (GV->isThreadLocal()) Out << "thread_local "; 1289 if (unsigned AddressSpace = GV->getType()->getAddressSpace()) 1290 Out << "addrspace(" << AddressSpace << ") "; 1291 Out << (GV->isConstant() ? "constant " : "global "); 1292 TypePrinter.print(GV->getType()->getElementType(), Out); 1293 1294 if (GV->hasInitializer()) { 1295 Out << ' '; 1296 if (MDNode *N = dyn_cast<MDNode>(GV->getInitializer())) 1297 printMDNode(N, false); 1298 else 1299 writeOperand(GV->getInitializer(), false); 1300 } 1301 1302 if (GV->hasSection()) 1303 Out << ", section \"" << GV->getSection() << '"'; 1304 if (GV->getAlignment()) 1305 Out << ", align " << GV->getAlignment(); 1306 1307 printInfoComment(*GV); 1308 Out << '\n'; 1309} 1310 1311void AssemblyWriter::printMDNode(const MDNode *Node, 1312 bool StandAlone) { 1313 std::map<const MDNode *, unsigned>::iterator MI = MDNodes.find(Node); 1314 // If this node is already printed then just refer it using its Metadata 1315 // id number. 1316 if (MI != MDNodes.end()) { 1317 if (!StandAlone) 1318 Out << "!" << MI->second; 1319 return; 1320 } 1321 1322 if (StandAlone) { 1323 // Print standalone MDNode. 1324 // !42 = !{ ... } 1325 Out << "!" << MetadataIDNo << " = "; 1326 Out << "constant metadata "; 1327 } 1328 1329 Out << "!{"; 1330 for (MDNode::const_elem_iterator I = Node->elem_begin(), E = Node->elem_end(); 1331 I != E;) { 1332 const Value *TV = *I; 1333 if (!TV) 1334 Out << "null"; 1335 else if (const MDNode *N = dyn_cast<MDNode>(TV)) { 1336 TypePrinter.print(N->getType(), Out); 1337 Out << ' '; 1338 printMDNode(N, StandAlone); 1339 } 1340 else if (!*I) 1341 Out << "null"; 1342 else 1343 writeOperand(*I, true); 1344 if (++I != E) 1345 Out << ", "; 1346 } 1347 Out << "}"; 1348 1349 MDNodes[Node] = MetadataIDNo++; 1350} 1351 1352void AssemblyWriter::printAlias(const GlobalAlias *GA) { 1353 // Don't crash when dumping partially built GA 1354 if (!GA->hasName()) 1355 Out << "<<nameless>> = "; 1356 else { 1357 PrintLLVMName(Out, GA); 1358 Out << " = "; 1359 } 1360 PrintVisibility(GA->getVisibility(), Out); 1361 1362 Out << "alias "; 1363 1364 PrintLinkage(GA->getLinkage(), Out); 1365 1366 const Constant *Aliasee = GA->getAliasee(); 1367 1368 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Aliasee)) { 1369 TypePrinter.print(GV->getType(), Out); 1370 Out << ' '; 1371 PrintLLVMName(Out, GV); 1372 } else if (const Function *F = dyn_cast<Function>(Aliasee)) { 1373 TypePrinter.print(F->getFunctionType(), Out); 1374 Out << "* "; 1375 1376 WriteAsOperandInternal(Out, F, TypePrinter, &Machine); 1377 } else if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(Aliasee)) { 1378 TypePrinter.print(GA->getType(), Out); 1379 Out << ' '; 1380 PrintLLVMName(Out, GA); 1381 } else { 1382 const ConstantExpr *CE = cast<ConstantExpr>(Aliasee); 1383 // The only valid GEP is an all zero GEP. 1384 assert((CE->getOpcode() == Instruction::BitCast || 1385 CE->getOpcode() == Instruction::GetElementPtr) && 1386 "Unsupported aliasee"); 1387 writeOperand(CE, false); 1388 } 1389 1390 printInfoComment(*GA); 1391 Out << '\n'; 1392} 1393 1394void AssemblyWriter::printTypeSymbolTable(const TypeSymbolTable &ST) { 1395 // Emit all numbered types. 1396 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i) { 1397 Out << "\ttype "; 1398 1399 // Make sure we print out at least one level of the type structure, so 1400 // that we do not get %2 = type %2 1401 TypePrinter.printAtLeastOneLevel(NumberedTypes[i], Out); 1402 Out << "\t\t; type %" << i << '\n'; 1403 } 1404 1405 // Print the named types. 1406 for (TypeSymbolTable::const_iterator TI = ST.begin(), TE = ST.end(); 1407 TI != TE; ++TI) { 1408 Out << '\t'; 1409 PrintLLVMName(Out, &TI->first[0], TI->first.size(), LocalPrefix); 1410 Out << " = type "; 1411 1412 // Make sure we print out at least one level of the type structure, so 1413 // that we do not get %FILE = type %FILE 1414 TypePrinter.printAtLeastOneLevel(TI->second, Out); 1415 Out << '\n'; 1416 } 1417} 1418 1419/// printFunction - Print all aspects of a function. 1420/// 1421void AssemblyWriter::printFunction(const Function *F) { 1422 // Print out the return type and name. 1423 Out << '\n'; 1424 1425 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out); 1426 1427 if (F->isDeclaration()) 1428 Out << "declare "; 1429 else 1430 Out << "define "; 1431 1432 PrintLinkage(F->getLinkage(), Out); 1433 PrintVisibility(F->getVisibility(), Out); 1434 1435 // Print the calling convention. 1436 switch (F->getCallingConv()) { 1437 case CallingConv::C: break; // default 1438 case CallingConv::Fast: Out << "fastcc "; break; 1439 case CallingConv::Cold: Out << "coldcc "; break; 1440 case CallingConv::X86_StdCall: Out << "x86_stdcallcc "; break; 1441 case CallingConv::X86_FastCall: Out << "x86_fastcallcc "; break; 1442 case CallingConv::ARM_APCS: Out << "arm_apcscc "; break; 1443 case CallingConv::ARM_AAPCS: Out << "arm_aapcscc "; break; 1444 case CallingConv::ARM_AAPCS_VFP:Out << "arm_aapcs_vfpcc "; break; 1445 default: Out << "cc" << F->getCallingConv() << " "; break; 1446 } 1447 1448 const FunctionType *FT = F->getFunctionType(); 1449 const AttrListPtr &Attrs = F->getAttributes(); 1450 Attributes RetAttrs = Attrs.getRetAttributes(); 1451 if (RetAttrs != Attribute::None) 1452 Out << Attribute::getAsString(Attrs.getRetAttributes()) << ' '; 1453 TypePrinter.print(F->getReturnType(), Out); 1454 Out << ' '; 1455 WriteAsOperandInternal(Out, F, TypePrinter, &Machine); 1456 Out << '('; 1457 Machine.incorporateFunction(F); 1458 1459 // Loop over the arguments, printing them... 1460 1461 unsigned Idx = 1; 1462 if (!F->isDeclaration()) { 1463 // If this isn't a declaration, print the argument names as well. 1464 for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); 1465 I != E; ++I) { 1466 // Insert commas as we go... the first arg doesn't get a comma 1467 if (I != F->arg_begin()) Out << ", "; 1468 printArgument(I, Attrs.getParamAttributes(Idx)); 1469 Idx++; 1470 } 1471 } else { 1472 // Otherwise, print the types from the function type. 1473 for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { 1474 // Insert commas as we go... the first arg doesn't get a comma 1475 if (i) Out << ", "; 1476 1477 // Output type... 1478 TypePrinter.print(FT->getParamType(i), Out); 1479 1480 Attributes ArgAttrs = Attrs.getParamAttributes(i+1); 1481 if (ArgAttrs != Attribute::None) 1482 Out << ' ' << Attribute::getAsString(ArgAttrs); 1483 } 1484 } 1485 1486 // Finish printing arguments... 1487 if (FT->isVarArg()) { 1488 if (FT->getNumParams()) Out << ", "; 1489 Out << "..."; // Output varargs portion of signature! 1490 } 1491 Out << ')'; 1492 Attributes FnAttrs = Attrs.getFnAttributes(); 1493 if (FnAttrs != Attribute::None) 1494 Out << ' ' << Attribute::getAsString(Attrs.getFnAttributes()); 1495 if (F->hasSection()) 1496 Out << " section \"" << F->getSection() << '"'; 1497 if (F->getAlignment()) 1498 Out << " align " << F->getAlignment(); 1499 if (F->hasGC()) 1500 Out << " gc \"" << F->getGC() << '"'; 1501 if (F->isDeclaration()) { 1502 Out << "\n"; 1503 } else { 1504 Out << " {"; 1505 1506 // Output all of its basic blocks... for the function 1507 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I) 1508 printBasicBlock(I); 1509 1510 Out << "}\n"; 1511 } 1512 1513 Machine.purgeFunction(); 1514} 1515 1516/// printArgument - This member is called for every argument that is passed into 1517/// the function. Simply print it out 1518/// 1519void AssemblyWriter::printArgument(const Argument *Arg, 1520 Attributes Attrs) { 1521 // Output type... 1522 TypePrinter.print(Arg->getType(), Out); 1523 1524 // Output parameter attributes list 1525 if (Attrs != Attribute::None) 1526 Out << ' ' << Attribute::getAsString(Attrs); 1527 1528 // Output name, if available... 1529 if (Arg->hasName()) { 1530 Out << ' '; 1531 PrintLLVMName(Out, Arg); 1532 } 1533} 1534 1535/// printBasicBlock - This member is called for each basic block in a method. 1536/// 1537void AssemblyWriter::printBasicBlock(const BasicBlock *BB) { 1538 if (BB->hasName()) { // Print out the label if it exists... 1539 Out << "\n"; 1540 PrintLLVMName(Out, BB->getNameStart(), BB->getNameLen(), LabelPrefix); 1541 Out << ':'; 1542 } else if (!BB->use_empty()) { // Don't print block # of no uses... 1543 Out << "\n; <label>:"; 1544 int Slot = Machine.getLocalSlot(BB); 1545 if (Slot != -1) 1546 Out << Slot; 1547 else 1548 Out << "<badref>"; 1549 } 1550 1551 if (BB->getParent() == 0) 1552 Out << "\t\t; Error: Block without parent!"; 1553 else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block? 1554 // Output predecessors for the block... 1555 Out << "\t\t;"; 1556 pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB); 1557 1558 if (PI == PE) { 1559 Out << " No predecessors!"; 1560 } else { 1561 Out << " preds = "; 1562 writeOperand(*PI, false); 1563 for (++PI; PI != PE; ++PI) { 1564 Out << ", "; 1565 writeOperand(*PI, false); 1566 } 1567 } 1568 } 1569 1570 Out << "\n"; 1571 1572 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out); 1573 1574 // Output all of the instructions in the basic block... 1575 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) 1576 printInstruction(*I); 1577 1578 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out); 1579} 1580 1581 1582/// printInfoComment - Print a little comment after the instruction indicating 1583/// which slot it occupies. 1584/// 1585void AssemblyWriter::printInfoComment(const Value &V) { 1586 if (V.getType() != Type::VoidTy) { 1587 Out << "\t\t; <"; 1588 TypePrinter.print(V.getType(), Out); 1589 Out << '>'; 1590 1591 if (!V.hasName() && !isa<Instruction>(V)) { 1592 int SlotNum; 1593 if (const GlobalValue *GV = dyn_cast<GlobalValue>(&V)) 1594 SlotNum = Machine.getGlobalSlot(GV); 1595 else 1596 SlotNum = Machine.getLocalSlot(&V); 1597 if (SlotNum == -1) 1598 Out << ":<badref>"; 1599 else 1600 Out << ':' << SlotNum; // Print out the def slot taken. 1601 } 1602 Out << " [#uses=" << V.getNumUses() << ']'; // Output # uses 1603 } 1604} 1605 1606// This member is called for each Instruction in a function.. 1607void AssemblyWriter::printInstruction(const Instruction &I) { 1608 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out); 1609 1610 Out << '\t'; 1611 1612 // Print out name if it exists... 1613 if (I.hasName()) { 1614 PrintLLVMName(Out, &I); 1615 Out << " = "; 1616 } else if (I.getType() != Type::VoidTy) { 1617 // Print out the def slot taken. 1618 int SlotNum = Machine.getLocalSlot(&I); 1619 if (SlotNum == -1) 1620 Out << "<badref> = "; 1621 else 1622 Out << '%' << SlotNum << " = "; 1623 } 1624 1625 // If this is a volatile load or store, print out the volatile marker. 1626 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) || 1627 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile())) { 1628 Out << "volatile "; 1629 } else if (isa<CallInst>(I) && cast<CallInst>(I).isTailCall()) { 1630 // If this is a call, check if it's a tail call. 1631 Out << "tail "; 1632 } 1633 1634 // Print out the opcode... 1635 Out << I.getOpcodeName(); 1636 1637 // Print out the compare instruction predicates 1638 if (const CmpInst *CI = dyn_cast<CmpInst>(&I)) 1639 Out << ' ' << getPredicateText(CI->getPredicate()); 1640 1641 // Print out the type of the operands... 1642 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0; 1643 1644 // Special case conditional branches to swizzle the condition out to the front 1645 if (isa<BranchInst>(I) && cast<BranchInst>(I).isConditional()) { 1646 BranchInst &BI(cast<BranchInst>(I)); 1647 Out << ' '; 1648 writeOperand(BI.getCondition(), true); 1649 Out << ", "; 1650 writeOperand(BI.getSuccessor(0), true); 1651 Out << ", "; 1652 writeOperand(BI.getSuccessor(1), true); 1653 1654 } else if (isa<SwitchInst>(I)) { 1655 // Special case switch statement to get formatting nice and correct... 1656 Out << ' '; 1657 writeOperand(Operand , true); 1658 Out << ", "; 1659 writeOperand(I.getOperand(1), true); 1660 Out << " ["; 1661 1662 for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) { 1663 Out << "\n\t\t"; 1664 writeOperand(I.getOperand(op ), true); 1665 Out << ", "; 1666 writeOperand(I.getOperand(op+1), true); 1667 } 1668 Out << "\n\t]"; 1669 } else if (isa<PHINode>(I)) { 1670 Out << ' '; 1671 TypePrinter.print(I.getType(), Out); 1672 Out << ' '; 1673 1674 for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) { 1675 if (op) Out << ", "; 1676 Out << "[ "; 1677 writeOperand(I.getOperand(op ), false); Out << ", "; 1678 writeOperand(I.getOperand(op+1), false); Out << " ]"; 1679 } 1680 } else if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(&I)) { 1681 Out << ' '; 1682 writeOperand(I.getOperand(0), true); 1683 for (const unsigned *i = EVI->idx_begin(), *e = EVI->idx_end(); i != e; ++i) 1684 Out << ", " << *i; 1685 } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(&I)) { 1686 Out << ' '; 1687 writeOperand(I.getOperand(0), true); Out << ", "; 1688 writeOperand(I.getOperand(1), true); 1689 for (const unsigned *i = IVI->idx_begin(), *e = IVI->idx_end(); i != e; ++i) 1690 Out << ", " << *i; 1691 } else if (isa<ReturnInst>(I) && !Operand) { 1692 Out << " void"; 1693 } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) { 1694 // Print the calling convention being used. 1695 switch (CI->getCallingConv()) { 1696 case CallingConv::C: break; // default 1697 case CallingConv::Fast: Out << " fastcc"; break; 1698 case CallingConv::Cold: Out << " coldcc"; break; 1699 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break; 1700 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break; 1701 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break; 1702 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break; 1703 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break; 1704 default: Out << " cc" << CI->getCallingConv(); break; 1705 } 1706 1707 const PointerType *PTy = cast<PointerType>(Operand->getType()); 1708 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType()); 1709 const Type *RetTy = FTy->getReturnType(); 1710 const AttrListPtr &PAL = CI->getAttributes(); 1711 1712 if (PAL.getRetAttributes() != Attribute::None) 1713 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes()); 1714 1715 // If possible, print out the short form of the call instruction. We can 1716 // only do this if the first argument is a pointer to a nonvararg function, 1717 // and if the return type is not a pointer to a function. 1718 // 1719 Out << ' '; 1720 if (!FTy->isVarArg() && 1721 (!isa<PointerType>(RetTy) || 1722 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) { 1723 TypePrinter.print(RetTy, Out); 1724 Out << ' '; 1725 writeOperand(Operand, false); 1726 } else { 1727 writeOperand(Operand, true); 1728 } 1729 Out << '('; 1730 for (unsigned op = 1, Eop = I.getNumOperands(); op < Eop; ++op) { 1731 if (op > 1) 1732 Out << ", "; 1733 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op)); 1734 } 1735 Out << ')'; 1736 if (PAL.getFnAttributes() != Attribute::None) 1737 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes()); 1738 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) { 1739 const PointerType *PTy = cast<PointerType>(Operand->getType()); 1740 const FunctionType *FTy = cast<FunctionType>(PTy->getElementType()); 1741 const Type *RetTy = FTy->getReturnType(); 1742 const AttrListPtr &PAL = II->getAttributes(); 1743 1744 // Print the calling convention being used. 1745 switch (II->getCallingConv()) { 1746 case CallingConv::C: break; // default 1747 case CallingConv::Fast: Out << " fastcc"; break; 1748 case CallingConv::Cold: Out << " coldcc"; break; 1749 case CallingConv::X86_StdCall: Out << " x86_stdcallcc"; break; 1750 case CallingConv::X86_FastCall: Out << " x86_fastcallcc"; break; 1751 case CallingConv::ARM_APCS: Out << " arm_apcscc "; break; 1752 case CallingConv::ARM_AAPCS: Out << " arm_aapcscc "; break; 1753 case CallingConv::ARM_AAPCS_VFP:Out << " arm_aapcs_vfpcc "; break; 1754 default: Out << " cc" << II->getCallingConv(); break; 1755 } 1756 1757 if (PAL.getRetAttributes() != Attribute::None) 1758 Out << ' ' << Attribute::getAsString(PAL.getRetAttributes()); 1759 1760 // If possible, print out the short form of the invoke instruction. We can 1761 // only do this if the first argument is a pointer to a nonvararg function, 1762 // and if the return type is not a pointer to a function. 1763 // 1764 Out << ' '; 1765 if (!FTy->isVarArg() && 1766 (!isa<PointerType>(RetTy) || 1767 !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) { 1768 TypePrinter.print(RetTy, Out); 1769 Out << ' '; 1770 writeOperand(Operand, false); 1771 } else { 1772 writeOperand(Operand, true); 1773 } 1774 Out << '('; 1775 for (unsigned op = 3, Eop = I.getNumOperands(); op < Eop; ++op) { 1776 if (op > 3) 1777 Out << ", "; 1778 writeParamOperand(I.getOperand(op), PAL.getParamAttributes(op-2)); 1779 } 1780 1781 Out << ')'; 1782 if (PAL.getFnAttributes() != Attribute::None) 1783 Out << ' ' << Attribute::getAsString(PAL.getFnAttributes()); 1784 1785 Out << "\n\t\t\tto "; 1786 writeOperand(II->getNormalDest(), true); 1787 Out << " unwind "; 1788 writeOperand(II->getUnwindDest(), true); 1789 1790 } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) { 1791 Out << ' '; 1792 TypePrinter.print(AI->getType()->getElementType(), Out); 1793 if (AI->isArrayAllocation()) { 1794 Out << ", "; 1795 writeOperand(AI->getArraySize(), true); 1796 } 1797 if (AI->getAlignment()) { 1798 Out << ", align " << AI->getAlignment(); 1799 } 1800 } else if (isa<CastInst>(I)) { 1801 if (Operand) { 1802 Out << ' '; 1803 writeOperand(Operand, true); // Work with broken code 1804 } 1805 Out << " to "; 1806 TypePrinter.print(I.getType(), Out); 1807 } else if (isa<VAArgInst>(I)) { 1808 if (Operand) { 1809 Out << ' '; 1810 writeOperand(Operand, true); // Work with broken code 1811 } 1812 Out << ", "; 1813 TypePrinter.print(I.getType(), Out); 1814 } else if (Operand) { // Print the normal way. 1815 1816 // PrintAllTypes - Instructions who have operands of all the same type 1817 // omit the type from all but the first operand. If the instruction has 1818 // different type operands (for example br), then they are all printed. 1819 bool PrintAllTypes = false; 1820 const Type *TheType = Operand->getType(); 1821 1822 // Select, Store and ShuffleVector always print all types. 1823 if (isa<SelectInst>(I) || isa<StoreInst>(I) || isa<ShuffleVectorInst>(I) 1824 || isa<ReturnInst>(I)) { 1825 PrintAllTypes = true; 1826 } else { 1827 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) { 1828 Operand = I.getOperand(i); 1829 // note that Operand shouldn't be null, but the test helps make dump() 1830 // more tolerant of malformed IR 1831 if (Operand && Operand->getType() != TheType) { 1832 PrintAllTypes = true; // We have differing types! Print them all! 1833 break; 1834 } 1835 } 1836 } 1837 1838 if (!PrintAllTypes) { 1839 Out << ' '; 1840 TypePrinter.print(TheType, Out); 1841 } 1842 1843 Out << ' '; 1844 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) { 1845 if (i) Out << ", "; 1846 writeOperand(I.getOperand(i), PrintAllTypes); 1847 } 1848 } 1849 1850 // Print post operand alignment for load/store 1851 if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) { 1852 Out << ", align " << cast<LoadInst>(I).getAlignment(); 1853 } else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) { 1854 Out << ", align " << cast<StoreInst>(I).getAlignment(); 1855 } 1856 1857 printInfoComment(I); 1858 Out << '\n'; 1859} 1860 1861 1862//===----------------------------------------------------------------------===// 1863// External Interface declarations 1864//===----------------------------------------------------------------------===// 1865 1866void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const { 1867 raw_os_ostream OS(o); 1868 print(OS, AAW); 1869} 1870void Module::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const { 1871 SlotTracker SlotTable(this); 1872 AssemblyWriter W(OS, SlotTable, this, AAW); 1873 W.write(this); 1874} 1875 1876void Type::print(std::ostream &o) const { 1877 raw_os_ostream OS(o); 1878 print(OS); 1879} 1880 1881void Type::print(raw_ostream &OS) const { 1882 if (this == 0) { 1883 OS << "<null Type>"; 1884 return; 1885 } 1886 TypePrinting().print(this, OS); 1887} 1888 1889void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const { 1890 if (this == 0) { 1891 OS << "printing a <null> value\n"; 1892 return; 1893 } 1894 1895 if (const Instruction *I = dyn_cast<Instruction>(this)) { 1896 const Function *F = I->getParent() ? I->getParent()->getParent() : 0; 1897 SlotTracker SlotTable(F); 1898 AssemblyWriter W(OS, SlotTable, F ? F->getParent() : 0, AAW); 1899 W.write(I); 1900 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(this)) { 1901 SlotTracker SlotTable(BB->getParent()); 1902 AssemblyWriter W(OS, SlotTable, 1903 BB->getParent() ? BB->getParent()->getParent() : 0, AAW); 1904 W.write(BB); 1905 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) { 1906 SlotTracker SlotTable(GV->getParent()); 1907 AssemblyWriter W(OS, SlotTable, GV->getParent(), AAW); 1908 W.write(GV); 1909 } else if (const MDNode *N = dyn_cast<MDNode>(this)) { 1910 TypePrinting TypePrinter; 1911 TypePrinter.print(N->getType(), OS); 1912 OS << ' '; 1913 // FIXME: Do we need a slot tracker for metadata ? 1914 SlotTracker SlotTable((const Function *)NULL); 1915 AssemblyWriter W(OS, SlotTable, NULL, AAW); 1916 W.printMDNode(N, false); 1917 } else if (const Constant *C = dyn_cast<Constant>(this)) { 1918 TypePrinting TypePrinter; 1919 TypePrinter.print(C->getType(), OS); 1920 OS << ' '; 1921 WriteConstantInt(OS, C, TypePrinter, 0); 1922 } else if (const Argument *A = dyn_cast<Argument>(this)) { 1923 WriteAsOperand(OS, this, true, 1924 A->getParent() ? A->getParent()->getParent() : 0); 1925 } else if (isa<InlineAsm>(this)) { 1926 WriteAsOperand(OS, this, true, 0); 1927 } else { 1928 assert(0 && "Unknown value to print out!"); 1929 } 1930} 1931 1932void Value::print(std::ostream &O, AssemblyAnnotationWriter *AAW) const { 1933 raw_os_ostream OS(O); 1934 print(OS, AAW); 1935} 1936 1937// Value::dump - allow easy printing of Values from the debugger. 1938void Value::dump() const { print(errs()); errs() << '\n'; } 1939 1940// Type::dump - allow easy printing of Types from the debugger. 1941// This one uses type names from the given context module 1942void Type::dump(const Module *Context) const { 1943 WriteTypeSymbolic(errs(), this, Context); 1944 errs() << '\n'; 1945} 1946 1947// Type::dump - allow easy printing of Types from the debugger. 1948void Type::dump() const { dump(0); } 1949 1950// Module::dump() - Allow printing of Modules from the debugger. 1951void Module::dump() const { print(errs(), 0); } 1952