lib/Target/CppBackend/CPPBackend.cpp

   1 //===-- CPPBackend.cpp - Library for converting LLVM code to C++ code -----===//
   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 file implements the writing of the LLVM IR as a set of C++ calls to the
  11 // LLVM IR interface. The input module is assumed to be verified.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "CPPTargetMachine.h"
  16 #include "llvm/CallingConv.h"
  17 #include "llvm/Constants.h"
  18 #include "llvm/DerivedTypes.h"
  19 #include "llvm/InlineAsm.h"
  20 #include "llvm/Instruction.h"
  21 #include "llvm/Instructions.h"
  22 #include "llvm/Module.h"
  23 #include "llvm/Pass.h"
  24 #include "llvm/PassManager.h"
  25 #include "llvm/TypeSymbolTable.h"
  26 #include "llvm/ADT/SmallPtrSet.h"
  27 #include "llvm/Support/CommandLine.h"
  28 #include "llvm/Support/ErrorHandling.h"
  29 #include "llvm/Support/FormattedStream.h"
  30 #include "llvm/Target/TargetRegistry.h"
  31 #include "llvm/ADT/StringExtras.h"
  32 #include "llvm/Config/config.h"
  33 #include <algorithm>
  34 #include <set>
  35
  36 using namespace llvm;
  37
  38 static cl::opt<std::string>
  39 FuncName("cppfname", cl::desc("Specify the name of the generated function"),
  40          cl::value_desc("function name"));
  41
  42 enum WhatToGenerate {
  43   GenProgram,
  44   GenModule,
  45   GenContents,
  46   GenFunction,
  47   GenFunctions,
  48   GenInline,
  49   GenVariable,
  50   GenType
  51 };
  52
  53 static cl::opt<WhatToGenerate> GenerationType("cppgen", cl::Optional,
  54   cl::desc("Choose what kind of output to generate"),
  55   cl::init(GenProgram),
  56   cl::values(
  57     clEnumValN(GenProgram,  "program",   "Generate a complete program"),
  58     clEnumValN(GenModule,   "module",    "Generate a module definition"),
  59     clEnumValN(GenContents, "contents",  "Generate contents of a module"),
  60     clEnumValN(GenFunction, "function",  "Generate a function definition"),
  61     clEnumValN(GenFunctions,"functions", "Generate all function definitions"),
  62     clEnumValN(GenInline,   "inline",    "Generate an inline function"),
  63     clEnumValN(GenVariable, "variable",  "Generate a variable definition"),
  64     clEnumValN(GenType,     "type",      "Generate a type definition"),
  65     clEnumValEnd
  66   )
  67 );
  68
  69 static cl::opt<std::string> NameToGenerate("cppfor", cl::Optional,
  70   cl::desc("Specify the name of the thing to generate"),
  71   cl::init("!bad!"));
  72
  73 extern "C" void LLVMInitializeCppBackendTarget() {
  74   // Register the target.
  75   RegisterTargetMachine<CPPTargetMachine> X(TheCppBackendTarget);
  76 }
  77
  78 namespace {
  79   typedef std::vector<const Type*> TypeList;
  80   typedef std::map<const Type*,std::string> TypeMap;
  81   typedef std::map<const Value*,std::string> ValueMap;
  82   typedef std::set<std::string> NameSet;
  83   typedef std::set<const Type*> TypeSet;
  84   typedef std::set<const Value*> ValueSet;
  85   typedef std::map<const Value*,std::string> ForwardRefMap;
  86
  87   /// CppWriter - This class is the main chunk of code that converts an LLVM
  88   /// module to a C++ translation unit.
  89   class CppWriter : public ModulePass {
  90     formatted_raw_ostream &Out;
  91     const Module *TheModule;
  92     uint64_t uniqueNum;
  93     TypeMap TypeNames;
  94     ValueMap ValueNames;
  95     TypeMap UnresolvedTypes;
  96     TypeList TypeStack;
  97     NameSet UsedNames;
  98     TypeSet DefinedTypes;
  99     ValueSet DefinedValues;
 100     ForwardRefMap ForwardRefs;
 101     bool is_inline;
 102
 103   public:
 104     static char ID;
 105     explicit CppWriter(formatted_raw_ostream &o) :
 106       ModulePass(&ID), Out(o), uniqueNum(0), is_inline(false) {}
 107
 108     virtual const char *getPassName() const { return "C++ backend"; }
 109
 110     bool runOnModule(Module &M);
 111
 112     void printProgram(const std::string& fname, const std::string& modName );
 113     void printModule(const std::string& fname, const std::string& modName );
 114     void printContents(const std::string& fname, const std::string& modName );
 115     void printFunction(const std::string& fname, const std::string& funcName );
 116     void printFunctions();
 117     void printInline(const std::string& fname, const std::string& funcName );
 118     void printVariable(const std::string& fname, const std::string& varName );
 119     void printType(const std::string& fname, const std::string& typeName );
 120
 121     void error(const std::string& msg);
 122
 123   private:
 124     void printLinkageType(GlobalValue::LinkageTypes LT);
 125     void printVisibilityType(GlobalValue::VisibilityTypes VisTypes);
 126     void printCallingConv(CallingConv::ID cc);
 127     void printEscapedString(const std::string& str);
 128     void printCFP(const ConstantFP* CFP);
 129
 130     std::string getCppName(const Type* val);
 131     inline void printCppName(const Type* val);
 132
 133     std::string getCppName(const Value* val);
 134     inline void printCppName(const Value* val);
 135
 136     void printAttributes(const AttrListPtr &PAL, const std::string &name);
 137     bool printTypeInternal(const Type* Ty);
 138     inline void printType(const Type* Ty);
 139     void printTypes(const Module* M);
 140
 141     void printConstant(const Constant *CPV);
 142     void printConstants(const Module* M);
 143
 144     void printVariableUses(const GlobalVariable *GV);
 145     void printVariableHead(const GlobalVariable *GV);
 146     void printVariableBody(const GlobalVariable *GV);
 147
 148     void printFunctionUses(const Function *F);
 149     void printFunctionHead(const Function *F);
 150     void printFunctionBody(const Function *F);
 151     void printInstruction(const Instruction *I, const std::string& bbname);
 152     std::string getOpName(Value*);
 153
 154     void printModuleBody();
 155   };
 156
 157   static unsigned indent_level = 0;
 158   inline formatted_raw_ostream& nl(formatted_raw_ostream& Out, int delta = 0) {
 159     Out << "\n";
 160     if (delta >= 0 || indent_level >= unsigned(-delta))
 161       indent_level += delta;
 162     for (unsigned i = 0; i < indent_level; ++i)
 163       Out << "  ";
 164     return Out;
 165   }
 166
 167   inline void in() { indent_level++; }
 168   inline void out() { if (indent_level >0) indent_level--; }
 169
 170   inline void
 171   sanitize(std::string& str) {
 172     for (size_t i = 0; i < str.length(); ++i)
 173       if (!isalnum(str[i]) && str[i] != '_')
 174         str[i] = '_';
 175   }
 176
 177   inline std::string
 178   getTypePrefix(const Type* Ty ) {
 179     switch (Ty->getTypeID()) {
 180     case Type::VoidTyID:     return "void_";
 181     case Type::IntegerTyID:
 182       return std::string("int") + utostr(cast<IntegerType>(Ty)->getBitWidth()) +
 183         "_";
 184     case Type::FloatTyID:    return "float_";
 185     case Type::DoubleTyID:   return "double_";
 186     case Type::LabelTyID:    return "label_";
 187     case Type::FunctionTyID: return "func_";
 188     case Type::StructTyID:   return "struct_";
 189     case Type::ArrayTyID:    return "array_";
 190     case Type::PointerTyID:  return "ptr_";
 191     case Type::VectorTyID:   return "packed_";
 192     case Type::OpaqueTyID:   return "opaque_";
 193     default:                 return "other_";
 194     }
 195     return "unknown_";
 196   }
 197
 198   // Looks up the type in the symbol table and returns a pointer to its name or
 199   // a null pointer if it wasn't found. Note that this isn't the same as the
 200   // Mode::getTypeName function which will return an empty string, not a null
 201   // pointer if the name is not found.
 202   inline const std::string*
 203   findTypeName(const TypeSymbolTable& ST, const Type* Ty) {
 204     TypeSymbolTable::const_iterator TI = ST.begin();
 205     TypeSymbolTable::const_iterator TE = ST.end();
 206     for (;TI != TE; ++TI)
 207       if (TI->second == Ty)
 208         return &(TI->first);
 209     return 0;
 210   }
 211
 212   void CppWriter::error(const std::string& msg) {
 213     llvm_report_error(msg);
 214   }
 215
 216   // printCFP - Print a floating point constant .. very carefully :)
 217   // This makes sure that conversion to/from floating yields the same binary
 218   // result so that we don't lose precision.
 219   void CppWriter::printCFP(const ConstantFP *CFP) {
 220     bool ignored;
 221     APFloat APF = APFloat(CFP->getValueAPF());  // copy
 222     if (CFP->getType() == Type::getFloatTy(CFP->getContext()))
 223       APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &ignored);
 224     Out << "ConstantFP::get(getGlobalContext(), ";
 225     Out << "APFloat(";
 226 #if HAVE_PRINTF_A
 227     char Buffer[100];
 228     sprintf(Buffer, "%A", APF.convertToDouble());
 229     if ((!strncmp(Buffer, "0x", 2) ||
 230          !strncmp(Buffer, "-0x", 3) ||
 231          !strncmp(Buffer, "+0x", 3)) &&
 232         APF.bitwiseIsEqual(APFloat(atof(Buffer)))) {
 233       if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 234         Out << "BitsToDouble(" << Buffer << ")";
 235       else
 236         Out << "BitsToFloat((float)" << Buffer << ")";
 237       Out << ")";
 238     } else {
 239 #endif
 240       std::string StrVal = ftostr(CFP->getValueAPF());
 241
 242       while (StrVal[0] == ' ')
 243         StrVal.erase(StrVal.begin());
 244
 245       // Check to make sure that the stringized number is not some string like
 246       // "Inf" or NaN.  Check that the string matches the "[-+]?[0-9]" regex.
 247       if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
 248            ((StrVal[0] == '-' || StrVal[0] == '+') &&
 249             (StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
 250           (CFP->isExactlyValue(atof(StrVal.c_str())))) {
 251         if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 252           Out <<  StrVal;
 253         else
 254           Out << StrVal << "f";
 255       } else if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 256         Out << "BitsToDouble(0x"
 257             << utohexstr(CFP->getValueAPF().bitcastToAPInt().getZExtValue())
 258             << "ULL) /* " << StrVal << " */";
 259       else
 260         Out << "BitsToFloat(0x"
 261             << utohexstr((uint32_t)CFP->getValueAPF().
 262                                         bitcastToAPInt().getZExtValue())
 263             << "U) /* " << StrVal << " */";
 264       Out << ")";
 265 #if HAVE_PRINTF_A
 266     }
 267 #endif
 268     Out << ")";
 269   }
 270
 271   void CppWriter::printCallingConv(CallingConv::ID cc){
 272     // Print the calling convention.
 273     switch (cc) {
 274     case CallingConv::C:     Out << "CallingConv::C"; break;
 275     case CallingConv::Fast:  Out << "CallingConv::Fast"; break;
 276     case CallingConv::Cold:  Out << "CallingConv::Cold"; break;
 277     case CallingConv::FirstTargetCC: Out << "CallingConv::FirstTargetCC"; break;
 278     default:                 Out << cc; break;
 279     }
 280   }
 281
 282   void CppWriter::printLinkageType(GlobalValue::LinkageTypes LT) {
 283     switch (LT) {
 284     case GlobalValue::InternalLinkage:
 285       Out << "GlobalValue::InternalLinkage"; break;
 286     case GlobalValue::PrivateLinkage:
 287       Out << "GlobalValue::PrivateLinkage"; break;
 288     case GlobalValue::LinkerPrivateLinkage:
 289       Out << "GlobalValue::LinkerPrivateLinkage"; break;
 290     case GlobalValue::AvailableExternallyLinkage:
 291       Out << "GlobalValue::AvailableExternallyLinkage "; break;
 292     case GlobalValue::LinkOnceAnyLinkage:
 293       Out << "GlobalValue::LinkOnceAnyLinkage "; break;
 294     case GlobalValue::LinkOnceODRLinkage:
 295       Out << "GlobalValue::LinkOnceODRLinkage "; break;
 296     case GlobalValue::WeakAnyLinkage:
 297       Out << "GlobalValue::WeakAnyLinkage"; break;
 298     case GlobalValue::WeakODRLinkage:
 299       Out << "GlobalValue::WeakODRLinkage"; break;
 300     case GlobalValue::AppendingLinkage:
 301       Out << "GlobalValue::AppendingLinkage"; break;
 302     case GlobalValue::ExternalLinkage:
 303       Out << "GlobalValue::ExternalLinkage"; break;
 304     case GlobalValue::DLLImportLinkage:
 305       Out << "GlobalValue::DLLImportLinkage"; break;
 306     case GlobalValue::DLLExportLinkage:
 307       Out << "GlobalValue::DLLExportLinkage"; break;
 308     case GlobalValue::ExternalWeakLinkage:
 309       Out << "GlobalValue::ExternalWeakLinkage"; break;
 310     case GlobalValue::GhostLinkage:
 311       Out << "GlobalValue::GhostLinkage"; break;
 312     case GlobalValue::CommonLinkage:
 313       Out << "GlobalValue::CommonLinkage"; break;
 314     }
 315   }
 316
 317   void CppWriter::printVisibilityType(GlobalValue::VisibilityTypes VisType) {
 318     switch (VisType) {
 319     default: llvm_unreachable("Unknown GVar visibility");
 320     case GlobalValue::DefaultVisibility:
 321       Out << "GlobalValue::DefaultVisibility";
 322       break;
 323     case GlobalValue::HiddenVisibility:
 324       Out << "GlobalValue::HiddenVisibility";
 325       break;
 326     case GlobalValue::ProtectedVisibility:
 327       Out << "GlobalValue::ProtectedVisibility";
 328       break;
 329     }
 330   }
 331
 332   // printEscapedString - Print each character of the specified string, escaping
 333   // it if it is not printable or if it is an escape char.
 334   void CppWriter::printEscapedString(const std::string &Str) {
 335     for (unsigned i = 0, e = Str.size(); i != e; ++i) {
 336       unsigned char C = Str[i];
 337       if (isprint(C) && C != '"' && C != '\\') {
 338         Out << C;
 339       } else {
 340         Out << "\\x"
 341             << (char) ((C/16  < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
 342             << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
 343       }
 344     }
 345   }
 346
 347   std::string CppWriter::getCppName(const Type* Ty) {
 348     // First, handle the primitive types .. easy
 349     if (Ty->isPrimitiveType() || Ty->isInteger()) {
 350       switch (Ty->getTypeID()) {
 351       case Type::VoidTyID:   return "Type::getVoidTy(getGlobalContext())";
 352       case Type::IntegerTyID: {
 353         unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
 354         return "IntegerType::get(getGlobalContext(), " + utostr(BitWidth) + ")";
 355       }
 356       case Type::X86_FP80TyID: return "Type::getX86_FP80Ty(getGlobalContext())";
 357       case Type::FloatTyID:    return "Type::getFloatTy(getGlobalContext())";
 358       case Type::DoubleTyID:   return "Type::getDoubleTy(getGlobalContext())";
 359       case Type::LabelTyID:    return "Type::getLabelTy(getGlobalContext())";
 360       default:
 361         error("Invalid primitive type");
 362         break;
 363       }
 364       // shouldn't be returned, but make it sensible
 365       return "Type::getVoidTy(getGlobalContext())";
 366     }
 367
 368     // Now, see if we've seen the type before and return that
 369     TypeMap::iterator I = TypeNames.find(Ty);
 370     if (I != TypeNames.end())
 371       return I->second;
 372
 373     // Okay, let's build a new name for this type. Start with a prefix
 374     const char* prefix = 0;
 375     switch (Ty->getTypeID()) {
 376     case Type::FunctionTyID:    prefix = "FuncTy_"; break;
 377     case Type::StructTyID:      prefix = "StructTy_"; break;
 378     case Type::ArrayTyID:       prefix = "ArrayTy_"; break;
 379     case Type::PointerTyID:     prefix = "PointerTy_"; break;
 380     case Type::OpaqueTyID:      prefix = "OpaqueTy_"; break;
 381     case Type::VectorTyID:      prefix = "VectorTy_"; break;
 382     default:                    prefix = "OtherTy_"; break; // prevent breakage
 383     }
 384
 385     // See if the type has a name in the symboltable and build accordingly
 386     const std::string* tName = findTypeName(TheModule->getTypeSymbolTable(), Ty);
 387     std::string name;
 388     if (tName)
 389       name = std::string(prefix) + *tName;
 390     else
 391       name = std::string(prefix) + utostr(uniqueNum++);
 392     sanitize(name);
 393
 394     // Save the name
 395     return TypeNames[Ty] = name;
 396   }
 397
 398   void CppWriter::printCppName(const Type* Ty) {
 399     printEscapedString(getCppName(Ty));
 400   }
 401
 402   std::string CppWriter::getCppName(const Value* val) {
 403     std::string name;
 404     ValueMap::iterator I = ValueNames.find(val);
 405     if (I != ValueNames.end() && I->first == val)
 406       return  I->second;
 407
 408     if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(val)) {
 409       name = std::string("gvar_") +
 410         getTypePrefix(GV->getType()->getElementType());
 411     } else if (isa<Function>(val)) {
 412       name = std::string("func_");
 413     } else if (const Constant* C = dyn_cast<Constant>(val)) {
 414       name = std::string("const_") + getTypePrefix(C->getType());
 415     } else if (const Argument* Arg = dyn_cast<Argument>(val)) {
 416       if (is_inline) {
 417         unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
 418                                         Function::const_arg_iterator(Arg)) + 1;
 419         name = std::string("arg_") + utostr(argNum);
 420         NameSet::iterator NI = UsedNames.find(name);
 421         if (NI != UsedNames.end())
 422           name += std::string("_") + utostr(uniqueNum++);
 423         UsedNames.insert(name);
 424         return ValueNames[val] = name;
 425       } else {
 426         name = getTypePrefix(val->getType());
 427       }
 428     } else {
 429       name = getTypePrefix(val->getType());
 430     }
 431     if (val->hasName())
 432       name += val->getName();
 433     else
 434       name += utostr(uniqueNum++);
 435     sanitize(name);
 436     NameSet::iterator NI = UsedNames.find(name);
 437     if (NI != UsedNames.end())
 438       name += std::string("_") + utostr(uniqueNum++);
 439     UsedNames.insert(name);
 440     return ValueNames[val] = name;
 441   }
 442
 443   void CppWriter::printCppName(const Value* val) {
 444     printEscapedString(getCppName(val));
 445   }
 446
 447   void CppWriter::printAttributes(const AttrListPtr &PAL,
 448                                   const std::string &name) {
 449     Out << "AttrListPtr " << name << "_PAL;";
 450     nl(Out);
 451     if (!PAL.isEmpty()) {
 452       Out << '{'; in(); nl(Out);
 453       Out << "SmallVector<AttributeWithIndex, 4> Attrs;"; nl(Out);
 454       Out << "AttributeWithIndex PAWI;"; nl(Out);
 455       for (unsigned i = 0; i < PAL.getNumSlots(); ++i) {
 456         unsigned index = PAL.getSlot(i).Index;
 457         Attributes attrs = PAL.getSlot(i).Attrs;
 458         Out << "PAWI.Index = " << index << "U; PAWI.Attrs = 0 ";
 459 #define HANDLE_ATTR(X)                 \
 460         if (attrs & Attribute::X)      \
 461           Out << " | Attribute::" #X;  \
 462         attrs &= ~Attribute::X;
 463
 464         HANDLE_ATTR(SExt);
 465         HANDLE_ATTR(ZExt);
 466         HANDLE_ATTR(NoReturn);
 467         HANDLE_ATTR(InReg);
 468         HANDLE_ATTR(StructRet);
 469         HANDLE_ATTR(NoUnwind);
 470         HANDLE_ATTR(NoAlias);
 471         HANDLE_ATTR(ByVal);
 472         HANDLE_ATTR(Nest);
 473         HANDLE_ATTR(ReadNone);
 474         HANDLE_ATTR(ReadOnly);
 475         HANDLE_ATTR(InlineHint);
 476         HANDLE_ATTR(NoInline);
 477         HANDLE_ATTR(AlwaysInline);
 478         HANDLE_ATTR(OptimizeForSize);
 479         HANDLE_ATTR(StackProtect);
 480         HANDLE_ATTR(StackProtectReq);
 481         HANDLE_ATTR(NoCapture);
 482 #undef HANDLE_ATTR
 483         assert(attrs == 0 && "Unhandled attribute!");
 484         Out << ";";
 485         nl(Out);
 486         Out << "Attrs.push_back(PAWI);";
 487         nl(Out);
 488       }
 489       Out << name << "_PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());";
 490       nl(Out);
 491       out(); nl(Out);
 492       Out << '}'; nl(Out);
 493     }
 494   }
 495
 496   bool CppWriter::printTypeInternal(const Type* Ty) {
 497     // We don't print definitions for primitive types
 498     if (Ty->isPrimitiveType() || Ty->isInteger())
 499       return false;
 500
 501     // If we already defined this type, we don't need to define it again.
 502     if (DefinedTypes.find(Ty) != DefinedTypes.end())
 503       return false;
 504
 505     // Everything below needs the name for the type so get it now.
 506     std::string typeName(getCppName(Ty));
 507
 508     // Search the type stack for recursion. If we find it, then generate this
 509     // as an OpaqueType, but make sure not to do this multiple times because
 510     // the type could appear in multiple places on the stack. Once the opaque
 511     // definition is issued, it must not be re-issued. Consequently we have to
 512     // check the UnresolvedTypes list as well.
 513     TypeList::const_iterator TI = std::find(TypeStack.begin(), TypeStack.end(),
 514                                             Ty);
 515     if (TI != TypeStack.end()) {
 516       TypeMap::const_iterator I = UnresolvedTypes.find(Ty);
 517       if (I == UnresolvedTypes.end()) {
 518         Out << "PATypeHolder " << typeName;
 519         Out << "_fwd = OpaqueType::get(getGlobalContext());";
 520         nl(Out);
 521         UnresolvedTypes[Ty] = typeName;
 522       }
 523       return true;
 524     }
 525
 526     // We're going to print a derived type which, by definition, contains other
 527     // types. So, push this one we're printing onto the type stack to assist with
 528     // recursive definitions.
 529     TypeStack.push_back(Ty);
 530
 531     // Print the type definition
 532     switch (Ty->getTypeID()) {
 533     case Type::FunctionTyID:  {
 534       const FunctionType* FT = cast<FunctionType>(Ty);
 535       Out << "std::vector<const Type*>" << typeName << "_args;";
 536       nl(Out);
 537       FunctionType::param_iterator PI = FT->param_begin();
 538       FunctionType::param_iterator PE = FT->param_end();
 539       for (; PI != PE; ++PI) {
 540         const Type* argTy = static_cast<const Type*>(*PI);
 541         bool isForward = printTypeInternal(argTy);
 542         std::string argName(getCppName(argTy));
 543         Out << typeName << "_args.push_back(" << argName;
 544         if (isForward)
 545           Out << "_fwd";
 546         Out << ");";
 547         nl(Out);
 548       }
 549       bool isForward = printTypeInternal(FT->getReturnType());
 550       std::string retTypeName(getCppName(FT->getReturnType()));
 551       Out << "FunctionType* " << typeName << " = FunctionType::get(";
 552       in(); nl(Out) << "/*Result=*/" << retTypeName;
 553       if (isForward)
 554         Out << "_fwd";
 555       Out << ",";
 556       nl(Out) << "/*Params=*/" << typeName << "_args,";
 557       nl(Out) << "/*isVarArg=*/" << (FT->isVarArg() ? "true" : "false") << ");";
 558       out();
 559       nl(Out);
 560       break;
 561     }
 562     case Type::StructTyID: {
 563       const StructType* ST = cast<StructType>(Ty);
 564       Out << "std::vector<const Type*>" << typeName << "_fields;";
 565       nl(Out);
 566       StructType::element_iterator EI = ST->element_begin();
 567       StructType::element_iterator EE = ST->element_end();
 568       for (; EI != EE; ++EI) {
 569         const Type* fieldTy = static_cast<const Type*>(*EI);
 570         bool isForward = printTypeInternal(fieldTy);
 571         std::string fieldName(getCppName(fieldTy));
 572         Out << typeName << "_fields.push_back(" << fieldName;
 573         if (isForward)
 574           Out << "_fwd";
 575         Out << ");";
 576         nl(Out);
 577       }
 578       Out << "StructType* " << typeName << " = StructType::get("
 579           << "mod->getContext(), "
 580           << typeName << "_fields, /*isPacked=*/"
 581           << (ST->isPacked() ? "true" : "false") << ");";
 582       nl(Out);
 583       break;
 584     }
 585     case Type::ArrayTyID: {
 586       const ArrayType* AT = cast<ArrayType>(Ty);
 587       const Type* ET = AT->getElementType();
 588       bool isForward = printTypeInternal(ET);
 589       std::string elemName(getCppName(ET));
 590       Out << "ArrayType* " << typeName << " = ArrayType::get("
 591           << elemName << (isForward ? "_fwd" : "")
 592           << ", " << utostr(AT->getNumElements()) << ");";
 593       nl(Out);
 594       break;
 595     }
 596     case Type::PointerTyID: {
 597       const PointerType* PT = cast<PointerType>(Ty);
 598       const Type* ET = PT->getElementType();
 599       bool isForward = printTypeInternal(ET);
 600       std::string elemName(getCppName(ET));
 601       Out << "PointerType* " << typeName << " = PointerType::get("
 602           << elemName << (isForward ? "_fwd" : "")
 603           << ", " << utostr(PT->getAddressSpace()) << ");";
 604       nl(Out);
 605       break;
 606     }
 607     case Type::VectorTyID: {
 608       const VectorType* PT = cast<VectorType>(Ty);
 609       const Type* ET = PT->getElementType();
 610       bool isForward = printTypeInternal(ET);
 611       std::string elemName(getCppName(ET));
 612       Out << "VectorType* " << typeName << " = VectorType::get("
 613           << elemName << (isForward ? "_fwd" : "")
 614           << ", " << utostr(PT->getNumElements()) << ");";
 615       nl(Out);
 616       break;
 617     }
 618     case Type::OpaqueTyID: {
 619       Out << "OpaqueType* " << typeName;
 620       Out << " = OpaqueType::get(getGlobalContext());";
 621       nl(Out);
 622       break;
 623     }
 624     default:
 625       error("Invalid TypeID");
 626     }
 627
 628     // If the type had a name, make sure we recreate it.
 629     const std::string* progTypeName =
 630       findTypeName(TheModule->getTypeSymbolTable(),Ty);
 631     if (progTypeName) {
 632       Out << "mod->addTypeName(\"" << *progTypeName << "\", "
 633           << typeName << ");";
 634       nl(Out);
 635     }
 636
 637     // Pop us off the type stack
 638     TypeStack.pop_back();
 639
 640     // Indicate that this type is now defined.
 641     DefinedTypes.insert(Ty);
 642
 643     // Early resolve as many unresolved types as possible. Search the unresolved
 644     // types map for the type we just printed. Now that its definition is complete
 645     // we can resolve any previous references to it. This prevents a cascade of
 646     // unresolved types.
 647     TypeMap::iterator I = UnresolvedTypes.find(Ty);
 648     if (I != UnresolvedTypes.end()) {
 649       Out << "cast<OpaqueType>(" << I->second
 650           << "_fwd.get())->refineAbstractTypeTo(" << I->second << ");";
 651       nl(Out);
 652       Out << I->second << " = cast<";
 653       switch (Ty->getTypeID()) {
 654       case Type::FunctionTyID: Out << "FunctionType"; break;
 655       case Type::ArrayTyID:    Out << "ArrayType"; break;
 656       case Type::StructTyID:   Out << "StructType"; break;
 657       case Type::VectorTyID:   Out << "VectorType"; break;
 658       case Type::PointerTyID:  Out << "PointerType"; break;
 659       case Type::OpaqueTyID:   Out << "OpaqueType"; break;
 660       default:                 Out << "NoSuchDerivedType"; break;
 661       }
 662       Out << ">(" << I->second << "_fwd.get());";
 663       nl(Out); nl(Out);
 664       UnresolvedTypes.erase(I);
 665     }
 666
 667     // Finally, separate the type definition from other with a newline.
 668     nl(Out);
 669
 670     // We weren't a recursive type
 671     return false;
 672   }
 673
 674   // Prints a type definition. Returns true if it could not resolve all the
 675   // types in the definition but had to use a forward reference.
 676   void CppWriter::printType(const Type* Ty) {
 677     assert(TypeStack.empty());
 678     TypeStack.clear();
 679     printTypeInternal(Ty);
 680     assert(TypeStack.empty());
 681   }
 682
 683   void CppWriter::printTypes(const Module* M) {
 684     // Walk the symbol table and print out all its types
 685     const TypeSymbolTable& symtab = M->getTypeSymbolTable();
 686     for (TypeSymbolTable::const_iterator TI = symtab.begin(), TE = symtab.end();
 687          TI != TE; ++TI) {
 688
 689       // For primitive types and types already defined, just add a name
 690       TypeMap::const_iterator TNI = TypeNames.find(TI->second);
 691       if (TI->second->isInteger() || TI->second->isPrimitiveType() ||
 692           TNI != TypeNames.end()) {
 693         Out << "mod->addTypeName(\"";
 694         printEscapedString(TI->first);
 695         Out << "\", " << getCppName(TI->second) << ");";
 696         nl(Out);
 697         // For everything else, define the type
 698       } else {
 699         printType(TI->second);
 700       }
 701     }
 702
 703     // Add all of the global variables to the value table...
 704     for (Module::const_global_iterator I = TheModule->global_begin(),
 705            E = TheModule->global_end(); I != E; ++I) {
 706       if (I->hasInitializer())
 707         printType(I->getInitializer()->getType());
 708       printType(I->getType());
 709     }
 710
 711     // Add all the functions to the table
 712     for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
 713          FI != FE; ++FI) {
 714       printType(FI->getReturnType());
 715       printType(FI->getFunctionType());
 716       // Add all the function arguments
 717       for (Function::const_arg_iterator AI = FI->arg_begin(),
 718              AE = FI->arg_end(); AI != AE; ++AI) {
 719         printType(AI->getType());
 720       }
 721
 722       // Add all of the basic blocks and instructions
 723       for (Function::const_iterator BB = FI->begin(),
 724              E = FI->end(); BB != E; ++BB) {
 725         printType(BB->getType());
 726         for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
 727              ++I) {
 728           printType(I->getType());
 729           for (unsigned i = 0; i < I->getNumOperands(); ++i)
 730             printType(I->getOperand(i)->getType());
 731         }
 732       }
 733     }
 734   }
 735
 736
 737   // printConstant - Print out a constant pool entry...
 738   void CppWriter::printConstant(const Constant *CV) {
 739     // First, if the constant is actually a GlobalValue (variable or function)
 740     // or its already in the constant list then we've printed it already and we
 741     // can just return.
 742     if (isa<GlobalValue>(CV) || ValueNames.find(CV) != ValueNames.end())
 743       return;
 744
 745     std::string constName(getCppName(CV));
 746     std::string typeName(getCppName(CV->getType()));
 747
 748     if (isa<GlobalValue>(CV)) {
 749       // Skip variables and functions, we emit them elsewhere
 750       return;
 751     }
 752
 753     if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
 754       std::string constValue = CI->getValue().toString(10, true);
 755       Out << "ConstantInt* " << constName
 756           << " = ConstantInt::get(getGlobalContext(), APInt("
 757           << cast<IntegerType>(CI->getType())->getBitWidth()
 758           << ", StringRef(\"" <<  constValue << "\"), 10));";
 759     } else if (isa<ConstantAggregateZero>(CV)) {
 760       Out << "ConstantAggregateZero* " << constName
 761           << " = ConstantAggregateZero::get(" << typeName << ");";
 762     } else if (isa<ConstantPointerNull>(CV)) {
 763       Out << "ConstantPointerNull* " << constName
 764           << " = ConstantPointerNull::get(" << typeName << ");";
 765     } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
 766       Out << "ConstantFP* " << constName << " = ";
 767       printCFP(CFP);
 768       Out << ";";
 769     } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
 770       if (CA->isString() &&
 771           CA->getType()->getElementType() ==
 772               Type::getInt8Ty(CA->getContext())) {
 773         Out << "Constant* " << constName <<
 774                " = ConstantArray::get(getGlobalContext(), \"";
 775         std::string tmp = CA->getAsString();
 776         bool nullTerminate = false;
 777         if (tmp[tmp.length()-1] == 0) {
 778           tmp.erase(tmp.length()-1);
 779           nullTerminate = true;
 780         }
 781         printEscapedString(tmp);
 782         // Determine if we want null termination or not.
 783         if (nullTerminate)
 784           Out << "\", true"; // Indicate that the null terminator should be
 785                              // added.
 786         else
 787           Out << "\", false";// No null terminator
 788         Out << ");";
 789       } else {
 790         Out << "std::vector<Constant*> " << constName << "_elems;";
 791         nl(Out);
 792         unsigned N = CA->getNumOperands();
 793         for (unsigned i = 0; i < N; ++i) {
 794           printConstant(CA->getOperand(i)); // recurse to print operands
 795           Out << constName << "_elems.push_back("
 796               << getCppName(CA->getOperand(i)) << ");";
 797           nl(Out);
 798         }
 799         Out << "Constant* " << constName << " = ConstantArray::get("
 800             << typeName << ", " << constName << "_elems);";
 801       }
 802     } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
 803       Out << "std::vector<Constant*> " << constName << "_fields;";
 804       nl(Out);
 805       unsigned N = CS->getNumOperands();
 806       for (unsigned i = 0; i < N; i++) {
 807         printConstant(CS->getOperand(i));
 808         Out << constName << "_fields.push_back("
 809             << getCppName(CS->getOperand(i)) << ");";
 810         nl(Out);
 811       }
 812       Out << "Constant* " << constName << " = ConstantStruct::get("
 813           << typeName << ", " << constName << "_fields);";
 814     } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
 815       Out << "std::vector<Constant*> " << constName << "_elems;";
 816       nl(Out);
 817       unsigned N = CP->getNumOperands();
 818       for (unsigned i = 0; i < N; ++i) {
 819         printConstant(CP->getOperand(i));
 820         Out << constName << "_elems.push_back("
 821             << getCppName(CP->getOperand(i)) << ");";
 822         nl(Out);
 823       }
 824       Out << "Constant* " << constName << " = ConstantVector::get("
 825           << typeName << ", " << constName << "_elems);";
 826     } else if (isa<UndefValue>(CV)) {
 827       Out << "UndefValue* " << constName << " = UndefValue::get("
 828           << typeName << ");";
 829     } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
 830       if (CE->getOpcode() == Instruction::GetElementPtr) {
 831         Out << "std::vector<Constant*> " << constName << "_indices;";
 832         nl(Out);
 833         printConstant(CE->getOperand(0));
 834         for (unsigned i = 1; i < CE->getNumOperands(); ++i ) {
 835           printConstant(CE->getOperand(i));
 836           Out << constName << "_indices.push_back("
 837               << getCppName(CE->getOperand(i)) << ");";
 838           nl(Out);
 839         }
 840         Out << "Constant* " << constName
 841             << " = ConstantExpr::getGetElementPtr("
 842             << getCppName(CE->getOperand(0)) << ", "
 843             << "&" << constName << "_indices[0], "
 844             << constName << "_indices.size()"
 845             << ");";
 846       } else if (CE->isCast()) {
 847         printConstant(CE->getOperand(0));
 848         Out << "Constant* " << constName << " = ConstantExpr::getCast(";
 849         switch (CE->getOpcode()) {
 850         default: llvm_unreachable("Invalid cast opcode");
 851         case Instruction::Trunc: Out << "Instruction::Trunc"; break;
 852         case Instruction::ZExt:  Out << "Instruction::ZExt"; break;
 853         case Instruction::SExt:  Out << "Instruction::SExt"; break;
 854         case Instruction::FPTrunc:  Out << "Instruction::FPTrunc"; break;
 855         case Instruction::FPExt:  Out << "Instruction::FPExt"; break;
 856         case Instruction::FPToUI:  Out << "Instruction::FPToUI"; break;
 857         case Instruction::FPToSI:  Out << "Instruction::FPToSI"; break;
 858         case Instruction::UIToFP:  Out << "Instruction::UIToFP"; break;
 859         case Instruction::SIToFP:  Out << "Instruction::SIToFP"; break;
 860         case Instruction::PtrToInt:  Out << "Instruction::PtrToInt"; break;
 861         case Instruction::IntToPtr:  Out << "Instruction::IntToPtr"; break;
 862         case Instruction::BitCast:  Out << "Instruction::BitCast"; break;
 863         }
 864         Out << ", " << getCppName(CE->getOperand(0)) << ", "
 865             << getCppName(CE->getType()) << ");";
 866       } else {
 867         unsigned N = CE->getNumOperands();
 868         for (unsigned i = 0; i < N; ++i ) {
 869           printConstant(CE->getOperand(i));
 870         }
 871         Out << "Constant* " << constName << " = ConstantExpr::";
 872         switch (CE->getOpcode()) {
 873         case Instruction::Add:    Out << "getAdd(";  break;
 874         case Instruction::FAdd:   Out << "getFAdd(";  break;
 875         case Instruction::Sub:    Out << "getSub("; break;
 876         case Instruction::FSub:   Out << "getFSub("; break;
 877         case Instruction::Mul:    Out << "getMul("; break;
 878         case Instruction::FMul:   Out << "getFMul("; break;
 879         case Instruction::UDiv:   Out << "getUDiv("; break;
 880         case Instruction::SDiv:   Out << "getSDiv("; break;
 881         case Instruction::FDiv:   Out << "getFDiv("; break;
 882         case Instruction::URem:   Out << "getURem("; break;
 883         case Instruction::SRem:   Out << "getSRem("; break;
 884         case Instruction::FRem:   Out << "getFRem("; break;
 885         case Instruction::And:    Out << "getAnd("; break;
 886         case Instruction::Or:     Out << "getOr("; break;
 887         case Instruction::Xor:    Out << "getXor("; break;
 888         case Instruction::ICmp:
 889           Out << "getICmp(ICmpInst::ICMP_";
 890           switch (CE->getPredicate()) {
 891           case ICmpInst::ICMP_EQ:  Out << "EQ"; break;
 892           case ICmpInst::ICMP_NE:  Out << "NE"; break;
 893           case ICmpInst::ICMP_SLT: Out << "SLT"; break;
 894           case ICmpInst::ICMP_ULT: Out << "ULT"; break;
 895           case ICmpInst::ICMP_SGT: Out << "SGT"; break;
 896           case ICmpInst::ICMP_UGT: Out << "UGT"; break;
 897           case ICmpInst::ICMP_SLE: Out << "SLE"; break;
 898           case ICmpInst::ICMP_ULE: Out << "ULE"; break;
 899           case ICmpInst::ICMP_SGE: Out << "SGE"; break;
 900           case ICmpInst::ICMP_UGE: Out << "UGE"; break;
 901           default: error("Invalid ICmp Predicate");
 902           }
 903           break;
 904         case Instruction::FCmp:
 905           Out << "getFCmp(FCmpInst::FCMP_";
 906           switch (CE->getPredicate()) {
 907           case FCmpInst::FCMP_FALSE: Out << "FALSE"; break;
 908           case FCmpInst::FCMP_ORD:   Out << "ORD"; break;
 909           case FCmpInst::FCMP_UNO:   Out << "UNO"; break;
 910           case FCmpInst::FCMP_OEQ:   Out << "OEQ"; break;
 911           case FCmpInst::FCMP_UEQ:   Out << "UEQ"; break;
 912           case FCmpInst::FCMP_ONE:   Out << "ONE"; break;
 913           case FCmpInst::FCMP_UNE:   Out << "UNE"; break;
 914           case FCmpInst::FCMP_OLT:   Out << "OLT"; break;
 915           case FCmpInst::FCMP_ULT:   Out << "ULT"; break;
 916           case FCmpInst::FCMP_OGT:   Out << "OGT"; break;
 917           case FCmpInst::FCMP_UGT:   Out << "UGT"; break;
 918           case FCmpInst::FCMP_OLE:   Out << "OLE"; break;
 919           case FCmpInst::FCMP_ULE:   Out << "ULE"; break;
 920           case FCmpInst::FCMP_OGE:   Out << "OGE"; break;
 921           case FCmpInst::FCMP_UGE:   Out << "UGE"; break;
 922           case FCmpInst::FCMP_TRUE:  Out << "TRUE"; break;
 923           default: error("Invalid FCmp Predicate");
 924           }
 925           break;
 926         case Instruction::Shl:     Out << "getShl("; break;
 927         case Instruction::LShr:    Out << "getLShr("; break;
 928         case Instruction::AShr:    Out << "getAShr("; break;
 929         case Instruction::Select:  Out << "getSelect("; break;
 930         case Instruction::ExtractElement: Out << "getExtractElement("; break;
 931         case Instruction::InsertElement:  Out << "getInsertElement("; break;
 932         case Instruction::ShuffleVector:  Out << "getShuffleVector("; break;
 933         default:
 934           error("Invalid constant expression");
 935           break;
 936         }
 937         Out << getCppName(CE->getOperand(0));
 938         for (unsigned i = 1; i < CE->getNumOperands(); ++i)
 939           Out << ", " << getCppName(CE->getOperand(i));
 940         Out << ");";
 941       }
 942     } else {
 943       error("Bad Constant");
 944       Out << "Constant* " << constName << " = 0; ";
 945     }
 946     nl(Out);
 947   }
 948
 949   void CppWriter::printConstants(const Module* M) {
 950     // Traverse all the global variables looking for constant initializers
 951     for (Module::const_global_iterator I = TheModule->global_begin(),
 952            E = TheModule->global_end(); I != E; ++I)
 953       if (I->hasInitializer())
 954         printConstant(I->getInitializer());
 955
 956     // Traverse the LLVM functions looking for constants
 957     for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
 958          FI != FE; ++FI) {
 959       // Add all of the basic blocks and instructions
 960       for (Function::const_iterator BB = FI->begin(),
 961              E = FI->end(); BB != E; ++BB) {
 962         for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
 963              ++I) {
 964           for (unsigned i = 0; i < I->getNumOperands(); ++i) {
 965             if (Constant* C = dyn_cast<Constant>(I->getOperand(i))) {
 966               printConstant(C);
 967             }
 968           }
 969         }
 970       }
 971     }
 972   }
 973
 974   void CppWriter::printVariableUses(const GlobalVariable *GV) {
 975     nl(Out) << "// Type Definitions";
 976     nl(Out);
 977     printType(GV->getType());
 978     if (GV->hasInitializer()) {
 979       Constant* Init = GV->getInitializer();
 980       printType(Init->getType());
 981       if (Function* F = dyn_cast<Function>(Init)) {
 982         nl(Out)<< "/ Function Declarations"; nl(Out);
 983         printFunctionHead(F);
 984       } else if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
 985         nl(Out) << "// Global Variable Declarations"; nl(Out);
 986         printVariableHead(gv);
 987       } else  {
 988         nl(Out) << "// Constant Definitions"; nl(Out);
 989         printConstant(gv);
 990       }
 991       if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
 992         nl(Out) << "// Global Variable Definitions"; nl(Out);
 993         printVariableBody(gv);
 994       }
 995     }
 996   }
 997
 998   void CppWriter::printVariableHead(const GlobalVariable *GV) {
 999     nl(Out) << "GlobalVariable* " << getCppName(GV);
1000     if (is_inline) {
1001       Out << " = mod->getGlobalVariable(getGlobalContext(), ";
1002       printEscapedString(GV->getName());
1003       Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)";
1004       nl(Out) << "if (!" << getCppName(GV) << ") {";
1005       in(); nl(Out) << getCppName(GV);
1006     }
1007     Out << " = new GlobalVariable(/*Module=*/*mod, ";
1008     nl(Out) << "/*Type=*/";
1009     printCppName(GV->getType()->getElementType());
1010     Out << ",";
1011     nl(Out) << "/*isConstant=*/" << (GV->isConstant()?"true":"false");
1012     Out << ",";
1013     nl(Out) << "/*Linkage=*/";
1014     printLinkageType(GV->getLinkage());
1015     Out << ",";
1016     nl(Out) << "/*Initializer=*/0, ";
1017     if (GV->hasInitializer()) {
1018       Out << "// has initializer, specified below";
1019     }
1020     nl(Out) << "/*Name=*/\"";
1021     printEscapedString(GV->getName());
1022     Out << "\");";
1023     nl(Out);
1024
1025     if (GV->hasSection()) {
1026       printCppName(GV);
1027       Out << "->setSection(\"";
1028       printEscapedString(GV->getSection());
1029       Out << "\");";
1030       nl(Out);
1031     }
1032     if (GV->getAlignment()) {
1033       printCppName(GV);
1034       Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");";
1035       nl(Out);
1036     }
1037     if (GV->getVisibility() != GlobalValue::DefaultVisibility) {
1038       printCppName(GV);
1039       Out << "->setVisibility(";
1040       printVisibilityType(GV->getVisibility());
1041       Out << ");";
1042       nl(Out);
1043     }
1044     if (is_inline) {
1045       out(); Out << "}"; nl(Out);
1046     }
1047   }
1048
1049   void CppWriter::printVariableBody(const GlobalVariable *GV) {
1050     if (GV->hasInitializer()) {
1051       printCppName(GV);
1052       Out << "->setInitializer(";
1053       Out << getCppName(GV->getInitializer()) << ");";
1054       nl(Out);
1055     }
1056   }
1057
1058   std::string CppWriter::getOpName(Value* V) {
1059     if (!isa<Instruction>(V) || DefinedValues.find(V) != DefinedValues.end())
1060       return getCppName(V);
1061
1062     // See if its alread in the map of forward references, if so just return the
1063     // name we already set up for it
1064     ForwardRefMap::const_iterator I = ForwardRefs.find(V);
1065     if (I != ForwardRefs.end())
1066       return I->second;
1067
1068     // This is a new forward reference. Generate a unique name for it
1069     std::string result(std::string("fwdref_") + utostr(uniqueNum++));
1070
1071     // Yes, this is a hack. An Argument is the smallest instantiable value that
1072     // we can make as a placeholder for the real value. We'll replace these
1073     // Argument instances later.
1074     Out << "Argument* " << result << " = new Argument("
1075         << getCppName(V->getType()) << ");";
1076     nl(Out);
1077     ForwardRefs[V] = result;
1078     return result;
1079   }
1080
1081   // printInstruction - This member is called for each Instruction in a function.
1082   void CppWriter::printInstruction(const Instruction *I,
1083                                    const std::string& bbname) {
1084     std::string iName(getCppName(I));
1085
1086     // Before we emit this instruction, we need to take care of generating any
1087     // forward references. So, we get the names of all the operands in advance
1088     std::string* opNames = new std::string[I->getNumOperands()];
1089     for (unsigned i = 0; i < I->getNumOperands(); i++) {
1090       opNames[i] = getOpName(I->getOperand(i));
1091     }
1092
1093     switch (I->getOpcode()) {
1094     default:
1095       error("Invalid instruction");
1096       break;
1097
1098     case Instruction::Ret: {
1099       const ReturnInst* ret =  cast<ReturnInst>(I);
1100       Out << "ReturnInst::Create(getGlobalContext(), "
1101           << (ret->getReturnValue() ? opNames[0] + ", " : "") << bbname << ");";
1102       break;
1103     }
1104     case Instruction::Br: {
1105       const BranchInst* br = cast<BranchInst>(I);
1106       Out << "BranchInst::Create(" ;
1107       if (br->getNumOperands() == 3 ) {
1108         Out << opNames[2] << ", "
1109             << opNames[1] << ", "
1110             << opNames[0] << ", ";
1111
1112       } else if (br->getNumOperands() == 1) {
1113         Out << opNames[0] << ", ";
1114       } else {
1115         error("Branch with 2 operands?");
1116       }
1117       Out << bbname << ");";
1118       break;
1119     }
1120     case Instruction::Switch: {
1121       const SwitchInst* sw = cast<SwitchInst>(I);
1122       Out << "SwitchInst* " << iName << " = SwitchInst::Create("
1123           << opNames[0] << ", "
1124           << opNames[1] << ", "
1125           << sw->getNumCases() << ", " << bbname << ");";
1126       nl(Out);
1127       for (unsigned i = 2; i < sw->getNumOperands(); i += 2 ) {
1128         Out << iName << "->addCase("
1129             << opNames[i] << ", "
1130             << opNames[i+1] << ");";
1131         nl(Out);
1132       }
1133       break;
1134     }
1135     case Instruction::Invoke: {
1136       const InvokeInst* inv = cast<InvokeInst>(I);
1137       Out << "std::vector<Value*> " << iName << "_params;";
1138       nl(Out);
1139       for (unsigned i = 3; i < inv->getNumOperands(); ++i) {
1140         Out << iName << "_params.push_back("
1141             << opNames[i] << ");";
1142         nl(Out);
1143       }
1144       Out << "InvokeInst *" << iName << " = InvokeInst::Create("
1145           << opNames[0] << ", "
1146           << opNames[1] << ", "
1147           << opNames[2] << ", "
1148           << iName << "_params.begin(), " << iName << "_params.end(), \"";
1149       printEscapedString(inv->getName());
1150       Out << "\", " << bbname << ");";
1151       nl(Out) << iName << "->setCallingConv(";
1152       printCallingConv(inv->getCallingConv());
1153       Out << ");";
1154       printAttributes(inv->getAttributes(), iName);
1155       Out << iName << "->setAttributes(" << iName << "_PAL);";
1156       nl(Out);
1157       break;
1158     }
1159     case Instruction::Unwind: {
1160       Out << "new UnwindInst("
1161           << bbname << ");";
1162       break;
1163     }
1164     case Instruction::Unreachable: {
1165       Out << "new UnreachableInst("
1166           << "getGlobalContext(), "
1167           << bbname << ");";
1168       break;
1169     }
1170     case Instruction::Add:
1171     case Instruction::FAdd:
1172     case Instruction::Sub:
1173     case Instruction::FSub:
1174     case Instruction::Mul:
1175     case Instruction::FMul:
1176     case Instruction::UDiv:
1177     case Instruction::SDiv:
1178     case Instruction::FDiv:
1179     case Instruction::URem:
1180     case Instruction::SRem:
1181     case Instruction::FRem:
1182     case Instruction::And:
1183     case Instruction::Or:
1184     case Instruction::Xor:
1185     case Instruction::Shl:
1186     case Instruction::LShr:
1187     case Instruction::AShr:{
1188       Out << "BinaryOperator* " << iName << " = BinaryOperator::Create(";
1189       switch (I->getOpcode()) {
1190       case Instruction::Add: Out << "Instruction::Add"; break;
1191       case Instruction::FAdd: Out << "Instruction::FAdd"; break;
1192       case Instruction::Sub: Out << "Instruction::Sub"; break;
1193       case Instruction::FSub: Out << "Instruction::FSub"; break;
1194       case Instruction::Mul: Out << "Instruction::Mul"; break;
1195       case Instruction::FMul: Out << "Instruction::FMul"; break;
1196       case Instruction::UDiv:Out << "Instruction::UDiv"; break;
1197       case Instruction::SDiv:Out << "Instruction::SDiv"; break;
1198       case Instruction::FDiv:Out << "Instruction::FDiv"; break;
1199       case Instruction::URem:Out << "Instruction::URem"; break;
1200       case Instruction::SRem:Out << "Instruction::SRem"; break;
1201       case Instruction::FRem:Out << "Instruction::FRem"; break;
1202       case Instruction::And: Out << "Instruction::And"; break;
1203       case Instruction::Or:  Out << "Instruction::Or";  break;
1204       case Instruction::Xor: Out << "Instruction::Xor"; break;
1205       case Instruction::Shl: Out << "Instruction::Shl"; break;
1206       case Instruction::LShr:Out << "Instruction::LShr"; break;
1207       case Instruction::AShr:Out << "Instruction::AShr"; break;
1208       default: Out << "Instruction::BadOpCode"; break;
1209       }
1210       Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1211       printEscapedString(I->getName());
1212       Out << "\", " << bbname << ");";
1213       break;
1214     }
1215     case Instruction::FCmp: {
1216       Out << "FCmpInst* " << iName << " = new FCmpInst(*" << bbname << ", ";
1217       switch (cast<FCmpInst>(I)->getPredicate()) {
1218       case FCmpInst::FCMP_FALSE: Out << "FCmpInst::FCMP_FALSE"; break;
1219       case FCmpInst::FCMP_OEQ  : Out << "FCmpInst::FCMP_OEQ"; break;
1220       case FCmpInst::FCMP_OGT  : Out << "FCmpInst::FCMP_OGT"; break;
1221       case FCmpInst::FCMP_OGE  : Out << "FCmpInst::FCMP_OGE"; break;
1222       case FCmpInst::FCMP_OLT  : Out << "FCmpInst::FCMP_OLT"; break;
1223       case FCmpInst::FCMP_OLE  : Out << "FCmpInst::FCMP_OLE"; break;
1224       case FCmpInst::FCMP_ONE  : Out << "FCmpInst::FCMP_ONE"; break;
1225       case FCmpInst::FCMP_ORD  : Out << "FCmpInst::FCMP_ORD"; break;
1226       case FCmpInst::FCMP_UNO  : Out << "FCmpInst::FCMP_UNO"; break;
1227       case FCmpInst::FCMP_UEQ  : Out << "FCmpInst::FCMP_UEQ"; break;
1228       case FCmpInst::FCMP_UGT  : Out << "FCmpInst::FCMP_UGT"; break;
1229       case FCmpInst::FCMP_UGE  : Out << "FCmpInst::FCMP_UGE"; break;
1230       case FCmpInst::FCMP_ULT  : Out << "FCmpInst::FCMP_ULT"; break;
1231       case FCmpInst::FCMP_ULE  : Out << "FCmpInst::FCMP_ULE"; break;
1232       case FCmpInst::FCMP_UNE  : Out << "FCmpInst::FCMP_UNE"; break;
1233       case FCmpInst::FCMP_TRUE : Out << "FCmpInst::FCMP_TRUE"; break;
1234       default: Out << "FCmpInst::BAD_ICMP_PREDICATE"; break;
1235       }
1236       Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1237       printEscapedString(I->getName());
1238       Out << "\");";
1239       break;
1240     }
1241     case Instruction::ICmp: {
1242       Out << "ICmpInst* " << iName << " = new ICmpInst(*" << bbname << ", ";
1243       switch (cast<ICmpInst>(I)->getPredicate()) {
1244       case ICmpInst::ICMP_EQ:  Out << "ICmpInst::ICMP_EQ";  break;
1245       case ICmpInst::ICMP_NE:  Out << "ICmpInst::ICMP_NE";  break;
1246       case ICmpInst::ICMP_ULE: Out << "ICmpInst::ICMP_ULE"; break;
1247       case ICmpInst::ICMP_SLE: Out << "ICmpInst::ICMP_SLE"; break;
1248       case ICmpInst::ICMP_UGE: Out << "ICmpInst::ICMP_UGE"; break;
1249       case ICmpInst::ICMP_SGE: Out << "ICmpInst::ICMP_SGE"; break;
1250       case ICmpInst::ICMP_ULT: Out << "ICmpInst::ICMP_ULT"; break;
1251       case ICmpInst::ICMP_SLT: Out << "ICmpInst::ICMP_SLT"; break;
1252       case ICmpInst::ICMP_UGT: Out << "ICmpInst::ICMP_UGT"; break;
1253       case ICmpInst::ICMP_SGT: Out << "ICmpInst::ICMP_SGT"; break;
1254       default: Out << "ICmpInst::BAD_ICMP_PREDICATE"; break;
1255       }
1256       Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1257       printEscapedString(I->getName());
1258       Out << "\");";
1259       break;
1260     }
1261     case Instruction::Malloc: {
1262       const MallocInst* mallocI = cast<MallocInst>(I);
1263       Out << "MallocInst* " << iName << " = new MallocInst("
1264           << getCppName(mallocI->getAllocatedType()) << ", ";
1265       if (mallocI->isArrayAllocation())
1266         Out << opNames[0] << ", " ;
1267       Out << "\"";
1268       printEscapedString(mallocI->getName());
1269       Out << "\", " << bbname << ");";
1270       if (mallocI->getAlignment())
1271         nl(Out) << iName << "->setAlignment("
1272             << mallocI->getAlignment() << ");";
1273       break;
1274     }
1275     case Instruction::Free: {
1276       Out << "FreeInst* " << iName << " = new FreeInst("
1277           << getCppName(I->getOperand(0)) << ", " << bbname << ");";
1278       break;
1279     }
1280     case Instruction::Alloca: {
1281       const AllocaInst* allocaI = cast<AllocaInst>(I);
1282       Out << "AllocaInst* " << iName << " = new AllocaInst("
1283           << getCppName(allocaI->getAllocatedType()) << ", ";
1284       if (allocaI->isArrayAllocation())
1285         Out << opNames[0] << ", ";
1286       Out << "\"";
1287       printEscapedString(allocaI->getName());
1288       Out << "\", " << bbname << ");";
1289       if (allocaI->getAlignment())
1290         nl(Out) << iName << "->setAlignment("
1291             << allocaI->getAlignment() << ");";
1292       break;
1293     }
1294     case Instruction::Load:{
1295       const LoadInst* load = cast<LoadInst>(I);
1296       Out << "LoadInst* " << iName << " = new LoadInst("
1297           << opNames[0] << ", \"";
1298       printEscapedString(load->getName());
1299       Out << "\", " << (load->isVolatile() ? "true" : "false" )
1300           << ", " << bbname << ");";
1301       break;
1302     }
1303     case Instruction::Store: {
1304       const StoreInst* store = cast<StoreInst>(I);
1305       Out << " new StoreInst("
1306           << opNames[0] << ", "
1307           << opNames[1] << ", "
1308           << (store->isVolatile() ? "true" : "false")
1309           << ", " << bbname << ");";
1310       break;
1311     }
1312     case Instruction::GetElementPtr: {
1313       const GetElementPtrInst* gep = cast<GetElementPtrInst>(I);
1314       if (gep->getNumOperands() <= 2) {
1315         Out << "GetElementPtrInst* " << iName << " = GetElementPtrInst::Create("
1316             << opNames[0];
1317         if (gep->getNumOperands() == 2)
1318           Out << ", " << opNames[1];
1319       } else {
1320         Out << "std::vector<Value*> " << iName << "_indices;";
1321         nl(Out);
1322         for (unsigned i = 1; i < gep->getNumOperands(); ++i ) {
1323           Out << iName << "_indices.push_back("
1324               << opNames[i] << ");";
1325           nl(Out);
1326         }
1327         Out << "Instruction* " << iName << " = GetElementPtrInst::Create("
1328             << opNames[0] << ", " << iName << "_indices.begin(), "
1329             << iName << "_indices.end()";
1330       }
1331       Out << ", \"";
1332       printEscapedString(gep->getName());
1333       Out << "\", " << bbname << ");";
1334       break;
1335     }
1336     case Instruction::PHI: {
1337       const PHINode* phi = cast<PHINode>(I);
1338
1339       Out << "PHINode* " << iName << " = PHINode::Create("
1340           << getCppName(phi->getType()) << ", \"";
1341       printEscapedString(phi->getName());
1342       Out << "\", " << bbname << ");";
1343       nl(Out) << iName << "->reserveOperandSpace("
1344         << phi->getNumIncomingValues()
1345           << ");";
1346       nl(Out);
1347       for (unsigned i = 0; i < phi->getNumOperands(); i+=2) {
1348         Out << iName << "->addIncoming("
1349             << opNames[i] << ", " << opNames[i+1] << ");";
1350         nl(Out);
1351       }
1352       break;
1353     }
1354     case Instruction::Trunc:
1355     case Instruction::ZExt:
1356     case Instruction::SExt:
1357     case Instruction::FPTrunc:
1358     case Instruction::FPExt:
1359     case Instruction::FPToUI:
1360     case Instruction::FPToSI:
1361     case Instruction::UIToFP:
1362     case Instruction::SIToFP:
1363     case Instruction::PtrToInt:
1364     case Instruction::IntToPtr:
1365     case Instruction::BitCast: {
1366       const CastInst* cst = cast<CastInst>(I);
1367       Out << "CastInst* " << iName << " = new ";
1368       switch (I->getOpcode()) {
1369       case Instruction::Trunc:    Out << "TruncInst"; break;
1370       case Instruction::ZExt:     Out << "ZExtInst"; break;
1371       case Instruction::SExt:     Out << "SExtInst"; break;
1372       case Instruction::FPTrunc:  Out << "FPTruncInst"; break;
1373       case Instruction::FPExt:    Out << "FPExtInst"; break;
1374       case Instruction::FPToUI:   Out << "FPToUIInst"; break;
1375       case Instruction::FPToSI:   Out << "FPToSIInst"; break;
1376       case Instruction::UIToFP:   Out << "UIToFPInst"; break;
1377       case Instruction::SIToFP:   Out << "SIToFPInst"; break;
1378       case Instruction::PtrToInt: Out << "PtrToIntInst"; break;
1379       case Instruction::IntToPtr: Out << "IntToPtrInst"; break;
1380       case Instruction::BitCast:  Out << "BitCastInst"; break;
1381       default: assert(!"Unreachable"); break;
1382       }
1383       Out << "(" << opNames[0] << ", "
1384           << getCppName(cst->getType()) << ", \"";
1385       printEscapedString(cst->getName());
1386       Out << "\", " << bbname << ");";
1387       break;
1388     }
1389     case Instruction::Call:{
1390       const CallInst* call = cast<CallInst>(I);
1391       if (const InlineAsm* ila = dyn_cast<InlineAsm>(call->getCalledValue())) {
1392         Out << "InlineAsm* " << getCppName(ila) << " = InlineAsm::get("
1393             << getCppName(ila->getFunctionType()) << ", \""
1394             << ila->getAsmString() << "\", \""
1395             << ila->getConstraintString() << "\","
1396             << (ila->hasSideEffects() ? "true" : "false") << ");";
1397         nl(Out);
1398       }
1399       if (call->getNumOperands() > 2) {
1400         Out << "std::vector<Value*> " << iName << "_params;";
1401         nl(Out);
1402         for (unsigned i = 1; i < call->getNumOperands(); ++i) {
1403           Out << iName << "_params.push_back(" << opNames[i] << ");";
1404           nl(Out);
1405         }
1406         Out << "CallInst* " << iName << " = CallInst::Create("
1407             << opNames[0] << ", " << iName << "_params.begin(), "
1408             << iName << "_params.end(), \"";
1409       } else if (call->getNumOperands() == 2) {
1410         Out << "CallInst* " << iName << " = CallInst::Create("
1411             << opNames[0] << ", " << opNames[1] << ", \"";
1412       } else {
1413         Out << "CallInst* " << iName << " = CallInst::Create(" << opNames[0]
1414             << ", \"";
1415       }
1416       printEscapedString(call->getName());
1417       Out << "\", " << bbname << ");";
1418       nl(Out) << iName << "->setCallingConv(";
1419       printCallingConv(call->getCallingConv());
1420       Out << ");";
1421       nl(Out) << iName << "->setTailCall("
1422           << (call->isTailCall() ? "true":"false");
1423       Out << ");";
1424       printAttributes(call->getAttributes(), iName);
1425       Out << iName << "->setAttributes(" << iName << "_PAL);";
1426       nl(Out);
1427       break;
1428     }
1429     case Instruction::Select: {
1430       const SelectInst* sel = cast<SelectInst>(I);
1431       Out << "SelectInst* " << getCppName(sel) << " = SelectInst::Create(";
1432       Out << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1433       printEscapedString(sel->getName());
1434       Out << "\", " << bbname << ");";
1435       break;
1436     }
1437     case Instruction::UserOp1:
1438       /// FALL THROUGH
1439     case Instruction::UserOp2: {
1440       /// FIXME: What should be done here?
1441       break;
1442     }
1443     case Instruction::VAArg: {
1444       const VAArgInst* va = cast<VAArgInst>(I);
1445       Out << "VAArgInst* " << getCppName(va) << " = new VAArgInst("
1446           << opNames[0] << ", " << getCppName(va->getType()) << ", \"";
1447       printEscapedString(va->getName());
1448       Out << "\", " << bbname << ");";
1449       break;
1450     }
1451     case Instruction::ExtractElement: {
1452       const ExtractElementInst* eei = cast<ExtractElementInst>(I);
1453       Out << "ExtractElementInst* " << getCppName(eei)
1454           << " = new ExtractElementInst(" << opNames[0]
1455           << ", " << opNames[1] << ", \"";
1456       printEscapedString(eei->getName());
1457       Out << "\", " << bbname << ");";
1458       break;
1459     }
1460     case Instruction::InsertElement: {
1461       const InsertElementInst* iei = cast<InsertElementInst>(I);
1462       Out << "InsertElementInst* " << getCppName(iei)
1463           << " = InsertElementInst::Create(" << opNames[0]
1464           << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1465       printEscapedString(iei->getName());
1466       Out << "\", " << bbname << ");";
1467       break;
1468     }
1469     case Instruction::ShuffleVector: {
1470       const ShuffleVectorInst* svi = cast<ShuffleVectorInst>(I);
1471       Out << "ShuffleVectorInst* " << getCppName(svi)
1472           << " = new ShuffleVectorInst(" << opNames[0]
1473           << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1474       printEscapedString(svi->getName());
1475       Out << "\", " << bbname << ");";
1476       break;
1477     }
1478     case Instruction::ExtractValue: {
1479       const ExtractValueInst *evi = cast<ExtractValueInst>(I);
1480       Out << "std::vector<unsigned> " << iName << "_indices;";
1481       nl(Out);
1482       for (unsigned i = 0; i < evi->getNumIndices(); ++i) {
1483         Out << iName << "_indices.push_back("
1484             << evi->idx_begin()[i] << ");";
1485         nl(Out);
1486       }
1487       Out << "ExtractValueInst* " << getCppName(evi)
1488           << " = ExtractValueInst::Create(" << opNames[0]
1489           << ", "
1490           << iName << "_indices.begin(), " << iName << "_indices.end(), \"";
1491       printEscapedString(evi->getName());
1492       Out << "\", " << bbname << ");";
1493       break;
1494     }
1495     case Instruction::InsertValue: {
1496       const InsertValueInst *ivi = cast<InsertValueInst>(I);
1497       Out << "std::vector<unsigned> " << iName << "_indices;";
1498       nl(Out);
1499       for (unsigned i = 0; i < ivi->getNumIndices(); ++i) {
1500         Out << iName << "_indices.push_back("
1501             << ivi->idx_begin()[i] << ");";
1502         nl(Out);
1503       }
1504       Out << "InsertValueInst* " << getCppName(ivi)
1505           << " = InsertValueInst::Create(" << opNames[0]
1506           << ", " << opNames[1] << ", "
1507           << iName << "_indices.begin(), " << iName << "_indices.end(), \"";
1508       printEscapedString(ivi->getName());
1509       Out << "\", " << bbname << ");";
1510       break;
1511     }
1512   }
1513   DefinedValues.insert(I);
1514   nl(Out);
1515   delete [] opNames;
1516 }
1517
1518   // Print out the types, constants and declarations needed by one function
1519   void CppWriter::printFunctionUses(const Function* F) {
1520     nl(Out) << "// Type Definitions"; nl(Out);
1521     if (!is_inline) {
1522       // Print the function's return type
1523       printType(F->getReturnType());
1524
1525       // Print the function's function type
1526       printType(F->getFunctionType());
1527
1528       // Print the types of each of the function's arguments
1529       for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1530            AI != AE; ++AI) {
1531         printType(AI->getType());
1532       }
1533     }
1534
1535     // Print type definitions for every type referenced by an instruction and
1536     // make a note of any global values or constants that are referenced
1537     SmallPtrSet<GlobalValue*,64> gvs;
1538     SmallPtrSet<Constant*,64> consts;
1539     for (Function::const_iterator BB = F->begin(), BE = F->end();
1540          BB != BE; ++BB){
1541       for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
1542            I != E; ++I) {
1543         // Print the type of the instruction itself
1544         printType(I->getType());
1545
1546         // Print the type of each of the instruction's operands
1547         for (unsigned i = 0; i < I->getNumOperands(); ++i) {
1548           Value* operand = I->getOperand(i);
1549           printType(operand->getType());
1550
1551           // If the operand references a GVal or Constant, make a note of it
1552           if (GlobalValue* GV = dyn_cast<GlobalValue>(operand)) {
1553             gvs.insert(GV);
1554             if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV))
1555               if (GVar->hasInitializer())
1556                 consts.insert(GVar->getInitializer());
1557           } else if (Constant* C = dyn_cast<Constant>(operand))
1558             consts.insert(C);
1559         }
1560       }
1561     }
1562
1563     // Print the function declarations for any functions encountered
1564     nl(Out) << "// Function Declarations"; nl(Out);
1565     for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1566          I != E; ++I) {
1567       if (Function* Fun = dyn_cast<Function>(*I)) {
1568         if (!is_inline || Fun != F)
1569           printFunctionHead(Fun);
1570       }
1571     }
1572
1573     // Print the global variable declarations for any variables encountered
1574     nl(Out) << "// Global Variable Declarations"; nl(Out);
1575     for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1576          I != E; ++I) {
1577       if (GlobalVariable* F = dyn_cast<GlobalVariable>(*I))
1578         printVariableHead(F);
1579     }
1580
1581   // Print the constants found
1582     nl(Out) << "// Constant Definitions"; nl(Out);
1583     for (SmallPtrSet<Constant*,64>::iterator I = consts.begin(),
1584            E = consts.end(); I != E; ++I) {
1585       printConstant(*I);
1586     }
1587
1588     // Process the global variables definitions now that all the constants have
1589     // been emitted. These definitions just couple the gvars with their constant
1590     // initializers.
1591     nl(Out) << "// Global Variable Definitions"; nl(Out);
1592     for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1593          I != E; ++I) {
1594       if (GlobalVariable* GV = dyn_cast<GlobalVariable>(*I))
1595         printVariableBody(GV);
1596     }
1597   }
1598
1599   void CppWriter::printFunctionHead(const Function* F) {
1600     nl(Out) << "Function* " << getCppName(F);
1601     if (is_inline) {
1602       Out << " = mod->getFunction(\"";
1603       printEscapedString(F->getName());
1604       Out << "\", " << getCppName(F->getFunctionType()) << ");";
1605       nl(Out) << "if (!" << getCppName(F) << ") {";
1606       nl(Out) << getCppName(F);
1607     }
1608     Out<< " = Function::Create(";
1609     nl(Out,1) << "/*Type=*/" << getCppName(F->getFunctionType()) << ",";
1610     nl(Out) << "/*Linkage=*/";
1611     printLinkageType(F->getLinkage());
1612     Out << ",";
1613     nl(Out) << "/*Name=*/\"";
1614     printEscapedString(F->getName());
1615     Out << "\", mod); " << (F->isDeclaration()? "// (external, no body)" : "");
1616     nl(Out,-1);
1617     printCppName(F);
1618     Out << "->setCallingConv(";
1619     printCallingConv(F->getCallingConv());
1620     Out << ");";
1621     nl(Out);
1622     if (F->hasSection()) {
1623       printCppName(F);
1624       Out << "->setSection(\"" << F->getSection() << "\");";
1625       nl(Out);
1626     }
1627     if (F->getAlignment()) {
1628       printCppName(F);
1629       Out << "->setAlignment(" << F->getAlignment() << ");";
1630       nl(Out);
1631     }
1632     if (F->getVisibility() != GlobalValue::DefaultVisibility) {
1633       printCppName(F);
1634       Out << "->setVisibility(";
1635       printVisibilityType(F->getVisibility());
1636       Out << ");";
1637       nl(Out);
1638     }
1639     if (F->hasGC()) {
1640       printCppName(F);
1641       Out << "->setGC(\"" << F->getGC() << "\");";
1642       nl(Out);
1643     }
1644     if (is_inline) {
1645       Out << "}";
1646       nl(Out);
1647     }
1648     printAttributes(F->getAttributes(), getCppName(F));
1649     printCppName(F);
1650     Out << "->setAttributes(" << getCppName(F) << "_PAL);";
1651     nl(Out);
1652   }
1653
1654   void CppWriter::printFunctionBody(const Function *F) {
1655     if (F->isDeclaration())
1656       return; // external functions have no bodies.
1657
1658     // Clear the DefinedValues and ForwardRefs maps because we can't have
1659     // cross-function forward refs
1660     ForwardRefs.clear();
1661     DefinedValues.clear();
1662
1663     // Create all the argument values
1664     if (!is_inline) {
1665       if (!F->arg_empty()) {
1666         Out << "Function::arg_iterator args = " << getCppName(F)
1667             << "->arg_begin();";
1668         nl(Out);
1669       }
1670       for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1671            AI != AE; ++AI) {
1672         Out << "Value* " << getCppName(AI) << " = args++;";
1673         nl(Out);
1674         if (AI->hasName()) {
1675           Out << getCppName(AI) << "->setName(\"" << AI->getName() << "\");";
1676           nl(Out);
1677         }
1678       }
1679     }
1680
1681     // Create all the basic blocks
1682     nl(Out);
1683     for (Function::const_iterator BI = F->begin(), BE = F->end();
1684          BI != BE; ++BI) {
1685       std::string bbname(getCppName(BI));
1686       Out << "BasicBlock* " << bbname <<
1687              " = BasicBlock::Create(getGlobalContext(), \"";
1688       if (BI->hasName())
1689         printEscapedString(BI->getName());
1690       Out << "\"," << getCppName(BI->getParent()) << ",0);";
1691       nl(Out);
1692     }
1693
1694     // Output all of its basic blocks... for the function
1695     for (Function::const_iterator BI = F->begin(), BE = F->end();
1696          BI != BE; ++BI) {
1697       std::string bbname(getCppName(BI));
1698       nl(Out) << "// Block " << BI->getName() << " (" << bbname << ")";
1699       nl(Out);
1700
1701       // Output all of the instructions in the basic block...
1702       for (BasicBlock::const_iterator I = BI->begin(), E = BI->end();
1703            I != E; ++I) {
1704         printInstruction(I,bbname);
1705       }
1706     }
1707
1708     // Loop over the ForwardRefs and resolve them now that all instructions
1709     // are generated.
1710     if (!ForwardRefs.empty()) {
1711       nl(Out) << "// Resolve Forward References";
1712       nl(Out);
1713     }
1714
1715     while (!ForwardRefs.empty()) {
1716       ForwardRefMap::iterator I = ForwardRefs.begin();
1717       Out << I->second << "->replaceAllUsesWith("
1718           << getCppName(I->first) << "); delete " << I->second << ";";
1719       nl(Out);
1720       ForwardRefs.erase(I);
1721     }
1722   }
1723
1724   void CppWriter::printInline(const std::string& fname,
1725                               const std::string& func) {
1726     const Function* F = TheModule->getFunction(func);
1727     if (!F) {
1728       error(std::string("Function '") + func + "' not found in input module");
1729       return;
1730     }
1731     if (F->isDeclaration()) {
1732       error(std::string("Function '") + func + "' is external!");
1733       return;
1734     }
1735     nl(Out) << "BasicBlock* " << fname << "(Module* mod, Function *"
1736             << getCppName(F);
1737     unsigned arg_count = 1;
1738     for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1739          AI != AE; ++AI) {
1740       Out << ", Value* arg_" << arg_count;
1741     }
1742     Out << ") {";
1743     nl(Out);
1744     is_inline = true;
1745     printFunctionUses(F);
1746     printFunctionBody(F);
1747     is_inline = false;
1748     Out << "return " << getCppName(F->begin()) << ";";
1749     nl(Out) << "}";
1750     nl(Out);
1751   }
1752
1753   void CppWriter::printModuleBody() {
1754     // Print out all the type definitions
1755     nl(Out) << "// Type Definitions"; nl(Out);
1756     printTypes(TheModule);
1757
1758     // Functions can call each other and global variables can reference them so
1759     // define all the functions first before emitting their function bodies.
1760     nl(Out) << "// Function Declarations"; nl(Out);
1761     for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1762          I != E; ++I)
1763       printFunctionHead(I);
1764
1765     // Process the global variables declarations. We can't initialze them until
1766     // after the constants are printed so just print a header for each global
1767     nl(Out) << "// Global Variable Declarations\n"; nl(Out);
1768     for (Module::const_global_iterator I = TheModule->global_begin(),
1769            E = TheModule->global_end(); I != E; ++I) {
1770       printVariableHead(I);
1771     }
1772
1773     // Print out all the constants definitions. Constants don't recurse except
1774     // through GlobalValues. All GlobalValues have been declared at this point
1775     // so we can proceed to generate the constants.
1776     nl(Out) << "// Constant Definitions"; nl(Out);
1777     printConstants(TheModule);
1778
1779     // Process the global variables definitions now that all the constants have
1780     // been emitted. These definitions just couple the gvars with their constant
1781     // initializers.
1782     nl(Out) << "// Global Variable Definitions"; nl(Out);
1783     for (Module::const_global_iterator I = TheModule->global_begin(),
1784            E = TheModule->global_end(); I != E; ++I) {
1785       printVariableBody(I);
1786     }
1787
1788     // Finally, we can safely put out all of the function bodies.
1789     nl(Out) << "// Function Definitions"; nl(Out);
1790     for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1791          I != E; ++I) {
1792       if (!I->isDeclaration()) {
1793         nl(Out) << "// Function: " << I->getName() << " (" << getCppName(I)
1794                 << ")";
1795         nl(Out) << "{";
1796         nl(Out,1);
1797         printFunctionBody(I);
1798         nl(Out,-1) << "}";
1799         nl(Out);
1800       }
1801     }
1802   }
1803
1804   void CppWriter::printProgram(const std::string& fname,
1805                                const std::string& mName) {
1806     Out << "#include <llvm/LLVMContext.h>\n";
1807     Out << "#include <llvm/Module.h>\n";
1808     Out << "#include <llvm/DerivedTypes.h>\n";
1809     Out << "#include <llvm/Constants.h>\n";
1810     Out << "#include <llvm/GlobalVariable.h>\n";
1811     Out << "#include <llvm/Function.h>\n";
1812     Out << "#include <llvm/CallingConv.h>\n";
1813     Out << "#include <llvm/BasicBlock.h>\n";
1814     Out << "#include <llvm/Instructions.h>\n";
1815     Out << "#include <llvm/InlineAsm.h>\n";
1816     Out << "#include <llvm/Support/FormattedStream.h>\n";
1817     Out << "#include <llvm/Support/MathExtras.h>\n";
1818     Out << "#include <llvm/Pass.h>\n";
1819     Out << "#include <llvm/PassManager.h>\n";
1820     Out << "#include <llvm/ADT/SmallVector.h>\n";
1821     Out << "#include <llvm/Analysis/Verifier.h>\n";
1822     Out << "#include <llvm/Assembly/PrintModulePass.h>\n";
1823     Out << "#include <algorithm>\n";
1824     Out << "using namespace llvm;\n\n";
1825     Out << "Module* " << fname << "();\n\n";
1826     Out << "int main(int argc, char**argv) {\n";
1827     Out << "  Module* Mod = " << fname << "();\n";
1828     Out << "  verifyModule(*Mod, PrintMessageAction);\n";
1829     Out << "  PassManager PM;\n";
1830     Out << "  PM.add(createPrintModulePass(&outs()));\n";
1831     Out << "  PM.run(*Mod);\n";
1832     Out << "  return 0;\n";
1833     Out << "}\n\n";
1834     printModule(fname,mName);
1835   }
1836
1837   void CppWriter::printModule(const std::string& fname,
1838                               const std::string& mName) {
1839     nl(Out) << "Module* " << fname << "() {";
1840     nl(Out,1) << "// Module Construction";
1841     nl(Out) << "Module* mod = new Module(\"";
1842     printEscapedString(mName);
1843     Out << "\", getGlobalContext());";
1844     if (!TheModule->getTargetTriple().empty()) {
1845       nl(Out) << "mod->setDataLayout(\"" << TheModule->getDataLayout() << "\");";
1846     }
1847     if (!TheModule->getTargetTriple().empty()) {
1848       nl(Out) << "mod->setTargetTriple(\"" << TheModule->getTargetTriple()
1849               << "\");";
1850     }
1851
1852     if (!TheModule->getModuleInlineAsm().empty()) {
1853       nl(Out) << "mod->setModuleInlineAsm(\"";
1854       printEscapedString(TheModule->getModuleInlineAsm());
1855       Out << "\");";
1856     }
1857     nl(Out);
1858
1859     // Loop over the dependent libraries and emit them.
1860     Module::lib_iterator LI = TheModule->lib_begin();
1861     Module::lib_iterator LE = TheModule->lib_end();
1862     while (LI != LE) {
1863       Out << "mod->addLibrary(\"" << *LI << "\");";
1864       nl(Out);
1865       ++LI;
1866     }
1867     printModuleBody();
1868     nl(Out) << "return mod;";
1869     nl(Out,-1) << "}";
1870     nl(Out);
1871   }
1872
1873   void CppWriter::printContents(const std::string& fname,
1874                                 const std::string& mName) {
1875     Out << "\nModule* " << fname << "(Module *mod) {\n";
1876     Out << "\nmod->setModuleIdentifier(\"";
1877     printEscapedString(mName);
1878     Out << "\");\n";
1879     printModuleBody();
1880     Out << "\nreturn mod;\n";
1881     Out << "\n}\n";
1882   }
1883
1884   void CppWriter::printFunction(const std::string& fname,
1885                                 const std::string& funcName) {
1886     const Function* F = TheModule->getFunction(funcName);
1887     if (!F) {
1888       error(std::string("Function '") + funcName + "' not found in input module");
1889       return;
1890     }
1891     Out << "\nFunction* " << fname << "(Module *mod) {\n";
1892     printFunctionUses(F);
1893     printFunctionHead(F);
1894     printFunctionBody(F);
1895     Out << "return " << getCppName(F) << ";\n";
1896     Out << "}\n";
1897   }
1898
1899   void CppWriter::printFunctions() {
1900     const Module::FunctionListType &funcs = TheModule->getFunctionList();
1901     Module::const_iterator I  = funcs.begin();
1902     Module::const_iterator IE = funcs.end();
1903
1904     for (; I != IE; ++I) {
1905       const Function &func = *I;
1906       if (!func.isDeclaration()) {
1907         std::string name("define_");
1908         name += func.getName();
1909         printFunction(name, func.getName());
1910       }
1911     }
1912   }
1913
1914   void CppWriter::printVariable(const std::string& fname,
1915                                 const std::string& varName) {
1916     const GlobalVariable* GV = TheModule->getNamedGlobal(varName);
1917
1918     if (!GV) {
1919       error(std::string("Variable '") + varName + "' not found in input module");
1920       return;
1921     }
1922     Out << "\nGlobalVariable* " << fname << "(Module *mod) {\n";
1923     printVariableUses(GV);
1924     printVariableHead(GV);
1925     printVariableBody(GV);
1926     Out << "return " << getCppName(GV) << ";\n";
1927     Out << "}\n";
1928   }
1929
1930   void CppWriter::printType(const std::string& fname,
1931                             const std::string& typeName) {
1932     const Type* Ty = TheModule->getTypeByName(typeName);
1933     if (!Ty) {
1934       error(std::string("Type '") + typeName + "' not found in input module");
1935       return;
1936     }
1937     Out << "\nType* " << fname << "(Module *mod) {\n";
1938     printType(Ty);
1939     Out << "return " << getCppName(Ty) << ";\n";
1940     Out << "}\n";
1941   }
1942
1943   bool CppWriter::runOnModule(Module &M) {
1944     TheModule = &M;
1945
1946     // Emit a header
1947     Out << "// Generated by llvm2cpp - DO NOT MODIFY!\n\n";
1948
1949     // Get the name of the function we're supposed to generate
1950     std::string fname = FuncName.getValue();
1951
1952     // Get the name of the thing we are to generate
1953     std::string tgtname = NameToGenerate.getValue();
1954     if (GenerationType == GenModule ||
1955         GenerationType == GenContents ||
1956         GenerationType == GenProgram ||
1957         GenerationType == GenFunctions) {
1958       if (tgtname == "!bad!") {
1959         if (M.getModuleIdentifier() == "-")
1960           tgtname = "<stdin>";
1961         else
1962           tgtname = M.getModuleIdentifier();
1963       }
1964     } else if (tgtname == "!bad!")
1965       error("You must use the -for option with -gen-{function,variable,type}");
1966
1967     switch (WhatToGenerate(GenerationType)) {
1968      case GenProgram:
1969       if (fname.empty())
1970         fname = "makeLLVMModule";
1971       printProgram(fname,tgtname);
1972       break;
1973      case GenModule:
1974       if (fname.empty())
1975         fname = "makeLLVMModule";
1976       printModule(fname,tgtname);
1977       break;
1978      case GenContents:
1979       if (fname.empty())
1980         fname = "makeLLVMModuleContents";
1981       printContents(fname,tgtname);
1982       break;
1983      case GenFunction:
1984       if (fname.empty())
1985         fname = "makeLLVMFunction";
1986       printFunction(fname,tgtname);
1987       break;
1988      case GenFunctions:
1989       printFunctions();
1990       break;
1991      case GenInline:
1992       if (fname.empty())
1993         fname = "makeLLVMInline";
1994       printInline(fname,tgtname);
1995       break;
1996      case GenVariable:
1997       if (fname.empty())
1998         fname = "makeLLVMVariable";
1999       printVariable(fname,tgtname);
2000       break;
2001      case GenType:
2002       if (fname.empty())
2003         fname = "makeLLVMType";
2004       printType(fname,tgtname);
2005       break;
2006      default:
2007       error("Invalid generation option");
2008     }
2009
2010     return false;
2011   }
2012 }
2013
2014 char CppWriter::ID = 0;
2015
2016 //===----------------------------------------------------------------------===//
2017 //                       External Interface declaration
2018 //===----------------------------------------------------------------------===//
2019
2020 bool CPPTargetMachine::addPassesToEmitWholeFile(PassManager &PM,
2021                                                 formatted_raw_ostream &o,
2022                                                 CodeGenFileType FileType,
2023                                                 CodeGenOpt::Level OptLevel) {
2024   if (FileType != TargetMachine::AssemblyFile) return true;
2025   PM.add(new CppWriter(o));
2026   return false;
2027 }