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/StringExtras.h"
  27 #include "llvm/ADT/STLExtras.h"
  28 #include "llvm/ADT/SmallPtrSet.h"
  29 #include "llvm/Support/CommandLine.h"
  30 #include "llvm/Support/ErrorHandling.h"
  31 #include "llvm/Support/FormattedStream.h"
  32 #include "llvm/Support/Streams.h"
  33 #include "llvm/Target/TargetRegistry.h"
  34 #include "llvm/Config/config.h"
  35 #include <algorithm>
  36 #include <set>
  37
  38 using namespace llvm;
  39
  40 static cl::opt<std::string>
  41 FuncName("cppfname", cl::desc("Specify the name of the generated function"),
  42          cl::value_desc("function name"));
  43
  44 enum WhatToGenerate {
  45   GenProgram,
  46   GenModule,
  47   GenContents,
  48   GenFunction,
  49   GenFunctions,
  50   GenInline,
  51   GenVariable,
  52   GenType
  53 };
  54
  55 static cl::opt<WhatToGenerate> GenerationType("cppgen", cl::Optional,
  56   cl::desc("Choose what kind of output to generate"),
  57   cl::init(GenProgram),
  58   cl::values(
  59     clEnumValN(GenProgram,  "program",   "Generate a complete program"),
  60     clEnumValN(GenModule,   "module",    "Generate a module definition"),
  61     clEnumValN(GenContents, "contents",  "Generate contents of a module"),
  62     clEnumValN(GenFunction, "function",  "Generate a function definition"),
  63     clEnumValN(GenFunctions,"functions", "Generate all function definitions"),
  64     clEnumValN(GenInline,   "inline",    "Generate an inline function"),
  65     clEnumValN(GenVariable, "variable",  "Generate a variable definition"),
  66     clEnumValN(GenType,     "type",      "Generate a type definition"),
  67     clEnumValEnd
  68   )
  69 );
  70
  71 static cl::opt<std::string> NameToGenerate("cppfor", cl::Optional,
  72   cl::desc("Specify the name of the thing to generate"),
  73   cl::init("!bad!"));
  74
  75 extern "C" void LLVMInitializeCppBackendTarget() {
  76   // Register the target.
  77   RegisterTargetMachine<CPPTargetMachine> X(TheCppBackendTarget);
  78 }
  79
  80 namespace {
  81   typedef std::vector<const Type*> TypeList;
  82   typedef std::map<const Type*,std::string> TypeMap;
  83   typedef std::map<const Value*,std::string> ValueMap;
  84   typedef std::set<std::string> NameSet;
  85   typedef std::set<const Type*> TypeSet;
  86   typedef std::set<const Value*> ValueSet;
  87   typedef std::map<const Value*,std::string> ForwardRefMap;
  88
  89   /// CppWriter - This class is the main chunk of code that converts an LLVM
  90   /// module to a C++ translation unit.
  91   class CppWriter : public ModulePass {
  92     formatted_raw_ostream &Out;
  93     const Module *TheModule;
  94     uint64_t uniqueNum;
  95     TypeMap TypeNames;
  96     ValueMap ValueNames;
  97     TypeMap UnresolvedTypes;
  98     TypeList TypeStack;
  99     NameSet UsedNames;
 100     TypeSet DefinedTypes;
 101     ValueSet DefinedValues;
 102     ForwardRefMap ForwardRefs;
 103     bool is_inline;
 104
 105   public:
 106     static char ID;
 107     explicit CppWriter(formatted_raw_ostream &o) :
 108       ModulePass(&ID), Out(o), uniqueNum(0), is_inline(false) {}
 109
 110     virtual const char *getPassName() const { return "C++ backend"; }
 111
 112     bool runOnModule(Module &M);
 113
 114     void printProgram(const std::string& fname, const std::string& modName );
 115     void printModule(const std::string& fname, const std::string& modName );
 116     void printContents(const std::string& fname, const std::string& modName );
 117     void printFunction(const std::string& fname, const std::string& funcName );
 118     void printFunctions();
 119     void printInline(const std::string& fname, const std::string& funcName );
 120     void printVariable(const std::string& fname, const std::string& varName );
 121     void printType(const std::string& fname, const std::string& typeName );
 122
 123     void error(const std::string& msg);
 124
 125   private:
 126     void printLinkageType(GlobalValue::LinkageTypes LT);
 127     void printVisibilityType(GlobalValue::VisibilityTypes VisTypes);
 128     void printCallingConv(unsigned cc);
 129     void printEscapedString(const std::string& str);
 130     void printCFP(const ConstantFP* CFP);
 131
 132     std::string getCppName(const Type* val);
 133     inline void printCppName(const Type* val);
 134
 135     std::string getCppName(const Value* val);
 136     inline void printCppName(const Value* val);
 137
 138     void printAttributes(const AttrListPtr &PAL, const std::string &name);
 139     bool printTypeInternal(const Type* Ty);
 140     inline void printType(const Type* Ty);
 141     void printTypes(const Module* M);
 142
 143     void printConstant(const Constant *CPV);
 144     void printConstants(const Module* M);
 145
 146     void printVariableUses(const GlobalVariable *GV);
 147     void printVariableHead(const GlobalVariable *GV);
 148     void printVariableBody(const GlobalVariable *GV);
 149
 150     void printFunctionUses(const Function *F);
 151     void printFunctionHead(const Function *F);
 152     void printFunctionBody(const Function *F);
 153     void printInstruction(const Instruction *I, const std::string& bbname);
 154     std::string getOpName(Value*);
 155
 156     void printModuleBody();
 157   };
 158
 159   static unsigned indent_level = 0;
 160   inline formatted_raw_ostream& nl(formatted_raw_ostream& Out, int delta = 0) {
 161     Out << "\n";
 162     if (delta >= 0 || indent_level >= unsigned(-delta))
 163       indent_level += delta;
 164     for (unsigned i = 0; i < indent_level; ++i)
 165       Out << "  ";
 166     return Out;
 167   }
 168
 169   inline void in() { indent_level++; }
 170   inline void out() { if (indent_level >0) indent_level--; }
 171
 172   inline void
 173   sanitize(std::string& str) {
 174     for (size_t i = 0; i < str.length(); ++i)
 175       if (!isalnum(str[i]) && str[i] != '_')
 176         str[i] = '_';
 177   }
 178
 179   inline std::string
 180   getTypePrefix(const Type* Ty ) {
 181     switch (Ty->getTypeID()) {
 182     case Type::VoidTyID:     return "void_";
 183     case Type::IntegerTyID:
 184       return std::string("int") + utostr(cast<IntegerType>(Ty)->getBitWidth()) +
 185         "_";
 186     case Type::FloatTyID:    return "float_";
 187     case Type::DoubleTyID:   return "double_";
 188     case Type::LabelTyID:    return "label_";
 189     case Type::FunctionTyID: return "func_";
 190     case Type::StructTyID:   return "struct_";
 191     case Type::ArrayTyID:    return "array_";
 192     case Type::PointerTyID:  return "ptr_";
 193     case Type::VectorTyID:   return "packed_";
 194     case Type::OpaqueTyID:   return "opaque_";
 195     default:                 return "other_";
 196     }
 197     return "unknown_";
 198   }
 199
 200   // Looks up the type in the symbol table and returns a pointer to its name or
 201   // a null pointer if it wasn't found. Note that this isn't the same as the
 202   // Mode::getTypeName function which will return an empty string, not a null
 203   // pointer if the name is not found.
 204   inline const std::string*
 205   findTypeName(const TypeSymbolTable& ST, const Type* Ty) {
 206     TypeSymbolTable::const_iterator TI = ST.begin();
 207     TypeSymbolTable::const_iterator TE = ST.end();
 208     for (;TI != TE; ++TI)
 209       if (TI->second == Ty)
 210         return &(TI->first);
 211     return 0;
 212   }
 213
 214   void CppWriter::error(const std::string& msg) {
 215     llvm_report_error(msg);
 216   }
 217
 218   // printCFP - Print a floating point constant .. very carefully :)
 219   // This makes sure that conversion to/from floating yields the same binary
 220   // result so that we don't lose precision.
 221   void CppWriter::printCFP(const ConstantFP *CFP) {
 222     bool ignored;
 223     APFloat APF = APFloat(CFP->getValueAPF());  // copy
 224     if (CFP->getType() == Type::getFloatTy(CFP->getContext()))
 225       APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &ignored);
 226     Out << "ConstantFP::get(";
 227     Out << "APFloat(";
 228 #if HAVE_PRINTF_A
 229     char Buffer[100];
 230     sprintf(Buffer, "%A", APF.convertToDouble());
 231     if ((!strncmp(Buffer, "0x", 2) ||
 232          !strncmp(Buffer, "-0x", 3) ||
 233          !strncmp(Buffer, "+0x", 3)) &&
 234         APF.bitwiseIsEqual(APFloat(atof(Buffer)))) {
 235       if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 236         Out << "BitsToDouble(" << Buffer << ")";
 237       else
 238         Out << "BitsToFloat((float)" << Buffer << ")";
 239       Out << ")";
 240     } else {
 241 #endif
 242       std::string StrVal = ftostr(CFP->getValueAPF());
 243
 244       while (StrVal[0] == ' ')
 245         StrVal.erase(StrVal.begin());
 246
 247       // Check to make sure that the stringized number is not some string like
 248       // "Inf" or NaN.  Check that the string matches the "[-+]?[0-9]" regex.
 249       if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
 250            ((StrVal[0] == '-' || StrVal[0] == '+') &&
 251             (StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
 252           (CFP->isExactlyValue(atof(StrVal.c_str())))) {
 253         if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 254           Out <<  StrVal;
 255         else
 256           Out << StrVal << "f";
 257       } else if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
 258         Out << "BitsToDouble(0x"
 259             << utohexstr(CFP->getValueAPF().bitcastToAPInt().getZExtValue())
 260             << "ULL) /* " << StrVal << " */";
 261       else
 262         Out << "BitsToFloat(0x"
 263             << utohexstr((uint32_t)CFP->getValueAPF().
 264                                         bitcastToAPInt().getZExtValue())
 265             << "U) /* " << StrVal << " */";
 266       Out << ")";
 267 #if HAVE_PRINTF_A
 268     }
 269 #endif
 270     Out << ")";
 271   }
 272
 273   void CppWriter::printCallingConv(unsigned cc){
 274     // Print the calling convention.
 275     switch (cc) {
 276     case CallingConv::C:     Out << "CallingConv::C"; break;
 277     case CallingConv::Fast:  Out << "CallingConv::Fast"; break;
 278     case CallingConv::Cold:  Out << "CallingConv::Cold"; break;
 279     case CallingConv::FirstTargetCC: Out << "CallingConv::FirstTargetCC"; break;
 280     default:                 Out << cc; break;
 281     }
 282   }
 283
 284   void CppWriter::printLinkageType(GlobalValue::LinkageTypes LT) {
 285     switch (LT) {
 286     case GlobalValue::InternalLinkage:
 287       Out << "GlobalValue::InternalLinkage"; break;
 288     case GlobalValue::PrivateLinkage:
 289       Out << "GlobalValue::PrivateLinkage"; break;
 290     case GlobalValue::LinkerPrivateLinkage:
 291       Out << "GlobalValue::LinkerPrivateLinkage"; break;
 292     case GlobalValue::AvailableExternallyLinkage:
 293       Out << "GlobalValue::AvailableExternallyLinkage "; break;
 294     case GlobalValue::LinkOnceAnyLinkage:
 295       Out << "GlobalValue::LinkOnceAnyLinkage "; break;
 296     case GlobalValue::LinkOnceODRLinkage:
 297       Out << "GlobalValue::LinkOnceODRLinkage "; break;
 298     case GlobalValue::WeakAnyLinkage:
 299       Out << "GlobalValue::WeakAnyLinkage"; break;
 300     case GlobalValue::WeakODRLinkage:
 301       Out << "GlobalValue::WeakODRLinkage"; break;
 302     case GlobalValue::AppendingLinkage:
 303       Out << "GlobalValue::AppendingLinkage"; break;
 304     case GlobalValue::ExternalLinkage:
 305       Out << "GlobalValue::ExternalLinkage"; break;
 306     case GlobalValue::DLLImportLinkage:
 307       Out << "GlobalValue::DLLImportLinkage"; break;
 308     case GlobalValue::DLLExportLinkage:
 309       Out << "GlobalValue::DLLExportLinkage"; break;
 310     case GlobalValue::ExternalWeakLinkage:
 311       Out << "GlobalValue::ExternalWeakLinkage"; break;
 312     case GlobalValue::GhostLinkage:
 313       Out << "GlobalValue::GhostLinkage"; break;
 314     case GlobalValue::CommonLinkage:
 315       Out << "GlobalValue::CommonLinkage"; break;
 316     }
 317   }
 318
 319   void CppWriter::printVisibilityType(GlobalValue::VisibilityTypes VisType) {
 320     switch (VisType) {
 321     default: llvm_unreachable("Unknown GVar visibility");
 322     case GlobalValue::DefaultVisibility:
 323       Out << "GlobalValue::DefaultVisibility";
 324       break;
 325     case GlobalValue::HiddenVisibility:
 326       Out << "GlobalValue::HiddenVisibility";
 327       break;
 328     case GlobalValue::ProtectedVisibility:
 329       Out << "GlobalValue::ProtectedVisibility";
 330       break;
 331     }
 332   }
 333
 334   // printEscapedString - Print each character of the specified string, escaping
 335   // it if it is not printable or if it is an escape char.
 336   void CppWriter::printEscapedString(const std::string &Str) {
 337     for (unsigned i = 0, e = Str.size(); i != e; ++i) {
 338       unsigned char C = Str[i];
 339       if (isprint(C) && C != '"' && C != '\\') {
 340         Out << C;
 341       } else {
 342         Out << "\\x"
 343             << (char) ((C/16  < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
 344             << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
 345       }
 346     }
 347   }
 348
 349   std::string CppWriter::getCppName(const Type* Ty) {
 350     // First, handle the primitive types .. easy
 351     if (Ty->isPrimitiveType() || Ty->isInteger()) {
 352       switch (Ty->getTypeID()) {
 353       case Type::VoidTyID:   return "Type::getVoidTy(getGlobalContext())";
 354       case Type::IntegerTyID: {
 355         unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
 356         return "IntegerType::get(getGlobalContext(), " + utostr(BitWidth) + ")";
 357       }
 358       case Type::X86_FP80TyID: return "Type::getX86_FP80Ty(getGlobalContext())";
 359       case Type::FloatTyID:    return "Type::getFloatTy(getGlobalContext())";
 360       case Type::DoubleTyID:   return "Type::getDoubleTy(getGlobalContext())";
 361       case Type::LabelTyID:    return "Type::getLabelTy(getGlobalContext())";
 362       default:
 363         error("Invalid primitive type");
 364         break;
 365       }
 366       // shouldn't be returned, but make it sensible
 367       return "Type::getVoidTy(getGlobalContext())";
 368     }
 369
 370     // Now, see if we've seen the type before and return that
 371     TypeMap::iterator I = TypeNames.find(Ty);
 372     if (I != TypeNames.end())
 373       return I->second;
 374
 375     // Okay, let's build a new name for this type. Start with a prefix
 376     const char* prefix = 0;
 377     switch (Ty->getTypeID()) {
 378     case Type::FunctionTyID:    prefix = "FuncTy_"; break;
 379     case Type::StructTyID:      prefix = "StructTy_"; break;
 380     case Type::ArrayTyID:       prefix = "ArrayTy_"; break;
 381     case Type::PointerTyID:     prefix = "PointerTy_"; break;
 382     case Type::OpaqueTyID:      prefix = "OpaqueTy_"; break;
 383     case Type::VectorTyID:      prefix = "VectorTy_"; break;
 384     default:                    prefix = "OtherTy_"; break; // prevent breakage
 385     }
 386
 387     // See if the type has a name in the symboltable and build accordingly
 388     const std::string* tName = findTypeName(TheModule->getTypeSymbolTable(), Ty);
 389     std::string name;
 390     if (tName)
 391       name = std::string(prefix) + *tName;
 392     else
 393       name = std::string(prefix) + utostr(uniqueNum++);
 394     sanitize(name);
 395
 396     // Save the name
 397     return TypeNames[Ty] = name;
 398   }
 399
 400   void CppWriter::printCppName(const Type* Ty) {
 401     printEscapedString(getCppName(Ty));
 402   }
 403
 404   std::string CppWriter::getCppName(const Value* val) {
 405     std::string name;
 406     ValueMap::iterator I = ValueNames.find(val);
 407     if (I != ValueNames.end() && I->first == val)
 408       return  I->second;
 409
 410     if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(val)) {
 411       name = std::string("gvar_") +
 412         getTypePrefix(GV->getType()->getElementType());
 413     } else if (isa<Function>(val)) {
 414       name = std::string("func_");
 415     } else if (const Constant* C = dyn_cast<Constant>(val)) {
 416       name = std::string("const_") + getTypePrefix(C->getType());
 417     } else if (const Argument* Arg = dyn_cast<Argument>(val)) {
 418       if (is_inline) {
 419         unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
 420                                         Function::const_arg_iterator(Arg)) + 1;
 421         name = std::string("arg_") + utostr(argNum);
 422         NameSet::iterator NI = UsedNames.find(name);
 423         if (NI != UsedNames.end())
 424           name += std::string("_") + utostr(uniqueNum++);
 425         UsedNames.insert(name);
 426         return ValueNames[val] = name;
 427       } else {
 428         name = getTypePrefix(val->getType());
 429       }
 430     } else {
 431       name = getTypePrefix(val->getType());
 432     }
 433     if (val->hasName())
 434       name += val->getName();
 435     else
 436       name += utostr(uniqueNum++);
 437     sanitize(name);
 438     NameSet::iterator NI = UsedNames.find(name);
 439     if (NI != UsedNames.end())
 440       name += std::string("_") + utostr(uniqueNum++);
 441     UsedNames.insert(name);
 442     return ValueNames[val] = name;
 443   }
 444
 445   void CppWriter::printCppName(const Value* val) {
 446     printEscapedString(getCppName(val));
 447   }
 448
 449   void CppWriter::printAttributes(const AttrListPtr &PAL,
 450                                   const std::string &name) {
 451     Out << "AttrListPtr " << name << "_PAL;";
 452     nl(Out);
 453     if (!PAL.isEmpty()) {
 454       Out << '{'; in(); nl(Out);
 455       Out << "SmallVector<AttributeWithIndex, 4> Attrs;"; nl(Out);
 456       Out << "AttributeWithIndex PAWI;"; nl(Out);
 457       for (unsigned i = 0; i < PAL.getNumSlots(); ++i) {
 458         unsigned index = PAL.getSlot(i).Index;
 459         Attributes attrs = PAL.getSlot(i).Attrs;
 460         Out << "PAWI.Index = " << index << "U; PAWI.Attrs = 0 ";
 461 #define HANDLE_ATTR(X)                 \
 462         if (attrs & Attribute::X)      \
 463           Out << " | Attribute::" #X;  \
 464         attrs &= ~Attribute::X;
 465
 466         HANDLE_ATTR(SExt);
 467         HANDLE_ATTR(ZExt);
 468         HANDLE_ATTR(NoReturn);
 469         HANDLE_ATTR(InReg);
 470         HANDLE_ATTR(StructRet);
 471         HANDLE_ATTR(NoUnwind);
 472         HANDLE_ATTR(NoAlias);
 473         HANDLE_ATTR(ByVal);
 474         HANDLE_ATTR(Nest);
 475         HANDLE_ATTR(ReadNone);
 476         HANDLE_ATTR(ReadOnly);
 477         HANDLE_ATTR(NoInline);
 478         HANDLE_ATTR(AlwaysInline);
 479         HANDLE_ATTR(OptimizeForSize);
 480         HANDLE_ATTR(StackProtect);
 481         HANDLE_ATTR(StackProtectReq);
 482         HANDLE_ATTR(NoCapture);
 483 #undef HANDLE_ATTR
 484         assert(attrs == 0 && "Unhandled attribute!");
 485         Out << ";";
 486         nl(Out);
 487         Out << "Attrs.push_back(PAWI);";
 488         nl(Out);
 489       }
 490       Out << name << "_PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());";
 491       nl(Out);
 492       out(); nl(Out);
 493       Out << '}'; nl(Out);
 494     }
 495   }
 496
 497   bool CppWriter::printTypeInternal(const Type* Ty) {
 498     // We don't print definitions for primitive types
 499     if (Ty->isPrimitiveType() || Ty->isInteger())
 500       return false;
 501
 502     // If we already defined this type, we don't need to define it again.
 503     if (DefinedTypes.find(Ty) != DefinedTypes.end())
 504       return false;
 505
 506     // Everything below needs the name for the type so get it now.
 507     std::string typeName(getCppName(Ty));
 508
 509     // Search the type stack for recursion. If we find it, then generate this
 510     // as an OpaqueType, but make sure not to do this multiple times because
 511     // the type could appear in multiple places on the stack. Once the opaque
 512     // definition is issued, it must not be re-issued. Consequently we have to
 513     // check the UnresolvedTypes list as well.
 514     TypeList::const_iterator TI = std::find(TypeStack.begin(), TypeStack.end(),
 515                                             Ty);
 516     if (TI != TypeStack.end()) {
 517       TypeMap::const_iterator I = UnresolvedTypes.find(Ty);
 518       if (I == UnresolvedTypes.end()) {
 519         Out << "PATypeHolder " << typeName;
 520         Out << "_fwd = OpaqueType::get(getGlobalContext());";
 521         nl(Out);
 522         UnresolvedTypes[Ty] = typeName;
 523       }
 524       return true;
 525     }
 526
 527     // We're going to print a derived type which, by definition, contains other
 528     // types. So, push this one we're printing onto the type stack to assist with
 529     // recursive definitions.
 530     TypeStack.push_back(Ty);
 531
 532     // Print the type definition
 533     switch (Ty->getTypeID()) {
 534     case Type::FunctionTyID:  {
 535       const FunctionType* FT = cast<FunctionType>(Ty);
 536       Out << "std::vector<const Type*>" << typeName << "_args;";
 537       nl(Out);
 538       FunctionType::param_iterator PI = FT->param_begin();
 539       FunctionType::param_iterator PE = FT->param_end();
 540       for (; PI != PE; ++PI) {
 541         const Type* argTy = static_cast<const Type*>(*PI);
 542         bool isForward = printTypeInternal(argTy);
 543         std::string argName(getCppName(argTy));
 544         Out << typeName << "_args.push_back(" << argName;
 545         if (isForward)
 546           Out << "_fwd";
 547         Out << ");";
 548         nl(Out);
 549       }
 550       bool isForward = printTypeInternal(FT->getReturnType());
 551       std::string retTypeName(getCppName(FT->getReturnType()));
 552       Out << "FunctionType* " << typeName << " = FunctionType::get(";
 553       in(); nl(Out) << "/*Result=*/" << retTypeName;
 554       if (isForward)
 555         Out << "_fwd";
 556       Out << ",";
 557       nl(Out) << "/*Params=*/" << typeName << "_args,";
 558       nl(Out) << "/*isVarArg=*/" << (FT->isVarArg() ? "true" : "false") << ");";
 559       out();
 560       nl(Out);
 561       break;
 562     }
 563     case Type::StructTyID: {
 564       const StructType* ST = cast<StructType>(Ty);
 565       Out << "std::vector<const Type*>" << typeName << "_fields;";
 566       nl(Out);
 567       StructType::element_iterator EI = ST->element_begin();
 568       StructType::element_iterator EE = ST->element_end();
 569       for (; EI != EE; ++EI) {
 570         const Type* fieldTy = static_cast<const Type*>(*EI);
 571         bool isForward = printTypeInternal(fieldTy);
 572         std::string fieldName(getCppName(fieldTy));
 573         Out << typeName << "_fields.push_back(" << fieldName;
 574         if (isForward)
 575           Out << "_fwd";
 576         Out << ");";
 577         nl(Out);
 578       }
 579       Out << "StructType* " << typeName << " = StructType::get("
 580           << "mod->getContext(), "
 581           << typeName << "_fields, /*isPacked=*/"
 582           << (ST->isPacked() ? "true" : "false") << ");";
 583       nl(Out);
 584       break;
 585     }
 586     case Type::ArrayTyID: {
 587       const ArrayType* AT = cast<ArrayType>(Ty);
 588       const Type* ET = AT->getElementType();
 589       bool isForward = printTypeInternal(ET);
 590       std::string elemName(getCppName(ET));
 591       Out << "ArrayType* " << typeName << " = ArrayType::get("
 592           << elemName << (isForward ? "_fwd" : "")
 593           << ", " << utostr(AT->getNumElements()) << ");";
 594       nl(Out);
 595       break;
 596     }
 597     case Type::PointerTyID: {
 598       const PointerType* PT = cast<PointerType>(Ty);
 599       const Type* ET = PT->getElementType();
 600       bool isForward = printTypeInternal(ET);
 601       std::string elemName(getCppName(ET));
 602       Out << "PointerType* " << typeName << " = PointerType::get("
 603           << elemName << (isForward ? "_fwd" : "")
 604           << ", " << utostr(PT->getAddressSpace()) << ");";
 605       nl(Out);
 606       break;
 607     }
 608     case Type::VectorTyID: {
 609       const VectorType* PT = cast<VectorType>(Ty);
 610       const Type* ET = PT->getElementType();
 611       bool isForward = printTypeInternal(ET);
 612       std::string elemName(getCppName(ET));
 613       Out << "VectorType* " << typeName << " = VectorType::get("
 614           << elemName << (isForward ? "_fwd" : "")
 615           << ", " << utostr(PT->getNumElements()) << ");";
 616       nl(Out);
 617       break;
 618     }
 619     case Type::OpaqueTyID: {
 620       Out << "OpaqueType* " << typeName;
 621       Out << " = OpaqueType::get(getGlobalContext());";
 622       nl(Out);
 623       break;
 624     }
 625     default:
 626       error("Invalid TypeID");
 627     }
 628
 629     // If the type had a name, make sure we recreate it.
 630     const std::string* progTypeName =
 631       findTypeName(TheModule->getTypeSymbolTable(),Ty);
 632     if (progTypeName) {
 633       Out << "mod->addTypeName(\"" << *progTypeName << "\", "
 634           << typeName << ");";
 635       nl(Out);
 636     }
 637
 638     // Pop us off the type stack
 639     TypeStack.pop_back();
 640
 641     // Indicate that this type is now defined.
 642     DefinedTypes.insert(Ty);
 643
 644     // Early resolve as many unresolved types as possible. Search the unresolved
 645     // types map for the type we just printed. Now that its definition is complete
 646     // we can resolve any previous references to it. This prevents a cascade of
 647     // unresolved types.
 648     TypeMap::iterator I = UnresolvedTypes.find(Ty);
 649     if (I != UnresolvedTypes.end()) {
 650       Out << "cast<OpaqueType>(" << I->second
 651           << "_fwd.get())->refineAbstractTypeTo(" << I->second << ");";
 652       nl(Out);
 653       Out << I->second << " = cast<";
 654       switch (Ty->getTypeID()) {
 655       case Type::FunctionTyID: Out << "FunctionType"; break;
 656       case Type::ArrayTyID:    Out << "ArrayType"; break;
 657       case Type::StructTyID:   Out << "StructType"; break;
 658       case Type::VectorTyID:   Out << "VectorType"; break;
 659       case Type::PointerTyID:  Out << "PointerType"; break;
 660       case Type::OpaqueTyID:   Out << "OpaqueType"; break;
 661       default:                 Out << "NoSuchDerivedType"; break;
 662       }
 663       Out << ">(" << I->second << "_fwd.get());";
 664       nl(Out); nl(Out);
 665       UnresolvedTypes.erase(I);
 666     }
 667
 668     // Finally, separate the type definition from other with a newline.
 669     nl(Out);
 670
 671     // We weren't a recursive type
 672     return false;
 673   }
 674
 675   // Prints a type definition. Returns true if it could not resolve all the
 676   // types in the definition but had to use a forward reference.
 677   void CppWriter::printType(const Type* Ty) {
 678     assert(TypeStack.empty());
 679     TypeStack.clear();
 680     printTypeInternal(Ty);
 681     assert(TypeStack.empty());
 682   }
 683
 684   void CppWriter::printTypes(const Module* M) {
 685     // Walk the symbol table and print out all its types
 686     const TypeSymbolTable& symtab = M->getTypeSymbolTable();
 687     for (TypeSymbolTable::const_iterator TI = symtab.begin(), TE = symtab.end();
 688          TI != TE; ++TI) {
 689
 690       // For primitive types and types already defined, just add a name
 691       TypeMap::const_iterator TNI = TypeNames.find(TI->second);
 692       if (TI->second->isInteger() || TI->second->isPrimitiveType() ||
 693           TNI != TypeNames.end()) {
 694         Out << "mod->addTypeName(\"";
 695         printEscapedString(TI->first);
 696         Out << "\", " << getCppName(TI->second) << ");";
 697         nl(Out);
 698         // For everything else, define the type
 699       } else {
 700         printType(TI->second);
 701       }
 702     }
 703
 704     // Add all of the global variables to the value table...
 705     for (Module::const_global_iterator I = TheModule->global_begin(),
 706            E = TheModule->global_end(); I != E; ++I) {
 707       if (I->hasInitializer())
 708         printType(I->getInitializer()->getType());
 709       printType(I->getType());
 710     }
 711
 712     // Add all the functions to the table
 713     for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
 714          FI != FE; ++FI) {
 715       printType(FI->getReturnType());
 716       printType(FI->getFunctionType());
 717       // Add all the function arguments
 718       for (Function::const_arg_iterator AI = FI->arg_begin(),
 719              AE = FI->arg_end(); AI != AE; ++AI) {
 720         printType(AI->getType());
 721       }
 722
 723       // Add all of the basic blocks and instructions
 724       for (Function::const_iterator BB = FI->begin(),
 725              E = FI->end(); BB != E; ++BB) {
 726         printType(BB->getType());
 727         for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
 728              ++I) {
 729           printType(I->getType());
 730           for (unsigned i = 0; i < I->getNumOperands(); ++i)
 731             printType(I->getOperand(i)->getType());
 732         }
 733       }
 734     }
 735   }
 736
 737
 738   // printConstant - Print out a constant pool entry...
 739   void CppWriter::printConstant(const Constant *CV) {
 740     // First, if the constant is actually a GlobalValue (variable or function)
 741     // or its already in the constant list then we've printed it already and we
 742     // can just return.
 743     if (isa<GlobalValue>(CV) || ValueNames.find(CV) != ValueNames.end())
 744       return;
 745
 746     std::string constName(getCppName(CV));
 747     std::string typeName(getCppName(CV->getType()));
 748
 749     if (isa<GlobalValue>(CV)) {
 750       // Skip variables and functions, we emit them elsewhere
 751       return;
 752     }
 753
 754     if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
 755       std::string constValue = CI->getValue().toString(10, true);
 756       Out << "ConstantInt* " << constName
 757           << " = ConstantInt::get(getGlobalContext(), APInt("
 758           << cast<IntegerType>(CI->getType())->getBitWidth()
 759           << ",  StringRef(\"" <<  constValue << "\"), 10));";
 760     } else if (isa<ConstantAggregateZero>(CV)) {
 761       Out << "ConstantAggregateZero* " << constName
 762           << " = ConstantAggregateZero::get(" << typeName << ");";
 763     } else if (isa<ConstantPointerNull>(CV)) {
 764       Out << "ConstantPointerNull* " << constName
 765           << " = ConstantPointerNull::get(" << typeName << ");";
 766     } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
 767       Out << "ConstantFP* " << constName << " = ";
 768       printCFP(CFP);
 769       Out << ";";
 770     } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
 771       if (CA->isString() &&
 772           CA->getType()->getElementType() ==
 773               Type::getInt8Ty(CA->getContext())) {
 774         Out << "Constant* " << constName <<
 775                " = ConstantArray::get(getGlobalContext(), \"";
 776         std::string tmp = CA->getAsString();
 777         bool nullTerminate = false;
 778         if (tmp[tmp.length()-1] == 0) {
 779           tmp.erase(tmp.length()-1);
 780           nullTerminate = true;
 781         }
 782         printEscapedString(tmp);
 783         // Determine if we want null termination or not.
 784         if (nullTerminate)
 785           Out << "\", true"; // Indicate that the null terminator should be
 786                              // added.
 787         else
 788           Out << "\", false";// No null terminator
 789         Out << ");";
 790       } else {
 791         Out << "std::vector<Constant*> " << constName << "_elems;";
 792         nl(Out);
 793         unsigned N = CA->getNumOperands();
 794         for (unsigned i = 0; i < N; ++i) {
 795           printConstant(CA->getOperand(i)); // recurse to print operands
 796           Out << constName << "_elems.push_back("
 797               << getCppName(CA->getOperand(i)) << ");";
 798           nl(Out);
 799         }
 800         Out << "Constant* " << constName << " = ConstantArray::get("
 801             << typeName << ", " << constName << "_elems);";
 802       }
 803     } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
 804       Out << "std::vector<Constant*> " << constName << "_fields;";
 805       nl(Out);
 806       unsigned N = CS->getNumOperands();
 807       for (unsigned i = 0; i < N; i++) {
 808         printConstant(CS->getOperand(i));
 809         Out << constName << "_fields.push_back("
 810             << getCppName(CS->getOperand(i)) << ");";
 811         nl(Out);
 812       }
 813       Out << "Constant* " << constName << " = ConstantStruct::get("
 814           << typeName << ", " << constName << "_fields);";
 815     } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
 816       Out << "std::vector<Constant*> " << constName << "_elems;";
 817       nl(Out);
 818       unsigned N = CP->getNumOperands();
 819       for (unsigned i = 0; i < N; ++i) {
 820         printConstant(CP->getOperand(i));
 821         Out << constName << "_elems.push_back("
 822             << getCppName(CP->getOperand(i)) << ");";
 823         nl(Out);
 824       }
 825       Out << "Constant* " << constName << " = ConstantVector::get("
 826           << typeName << ", " << constName << "_elems);";
 827     } else if (isa<UndefValue>(CV)) {
 828       Out << "UndefValue* " << constName << " = UndefValue::get("
 829           << typeName << ");";
 830     } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
 831       if (CE->getOpcode() == Instruction::GetElementPtr) {
 832         Out << "std::vector<Constant*> " << constName << "_indices;";
 833         nl(Out);
 834         printConstant(CE->getOperand(0));
 835         for (unsigned i = 1; i < CE->getNumOperands(); ++i ) {
 836           printConstant(CE->getOperand(i));
 837           Out << constName << "_indices.push_back("
 838               << getCppName(CE->getOperand(i)) << ");";
 839           nl(Out);
 840         }
 841         Out << "Constant* " << constName
 842             << " = ConstantExpr::getGetElementPtr("
 843             << getCppName(CE->getOperand(0)) << ", "
 844             << "&" << constName << "_indices[0], "
 845             << constName << "_indices.size()"
 846             << " );";
 847       } else if (CE->isCast()) {
 848         printConstant(CE->getOperand(0));
 849         Out << "Constant* " << constName << " = ConstantExpr::getCast(";
 850         switch (CE->getOpcode()) {
 851         default: llvm_unreachable("Invalid cast opcode");
 852         case Instruction::Trunc: Out << "Instruction::Trunc"; break;
 853         case Instruction::ZExt:  Out << "Instruction::ZExt"; break;
 854         case Instruction::SExt:  Out << "Instruction::SExt"; break;
 855         case Instruction::FPTrunc:  Out << "Instruction::FPTrunc"; break;
 856         case Instruction::FPExt:  Out << "Instruction::FPExt"; break;
 857         case Instruction::FPToUI:  Out << "Instruction::FPToUI"; break;
 858         case Instruction::FPToSI:  Out << "Instruction::FPToSI"; break;
 859         case Instruction::UIToFP:  Out << "Instruction::UIToFP"; break;
 860         case Instruction::SIToFP:  Out << "Instruction::SIToFP"; break;
 861         case Instruction::PtrToInt:  Out << "Instruction::PtrToInt"; break;
 862         case Instruction::IntToPtr:  Out << "Instruction::IntToPtr"; break;
 863         case Instruction::BitCast:  Out << "Instruction::BitCast"; break;
 864         }
 865         Out << ", " << getCppName(CE->getOperand(0)) << ", "
 866             << getCppName(CE->getType()) << ");";
 867       } else {
 868         unsigned N = CE->getNumOperands();
 869         for (unsigned i = 0; i < N; ++i ) {
 870           printConstant(CE->getOperand(i));
 871         }
 872         Out << "Constant* " << constName << " = ConstantExpr::";
 873         switch (CE->getOpcode()) {
 874         case Instruction::Add:    Out << "getAdd(";  break;
 875         case Instruction::FAdd:   Out << "getFAdd(";  break;
 876         case Instruction::Sub:    Out << "getSub("; break;
 877         case Instruction::FSub:   Out << "getFSub("; break;
 878         case Instruction::Mul:    Out << "getMul("; break;
 879         case Instruction::FMul:   Out << "getFMul("; break;
 880         case Instruction::UDiv:   Out << "getUDiv("; break;
 881         case Instruction::SDiv:   Out << "getSDiv("; break;
 882         case Instruction::FDiv:   Out << "getFDiv("; break;
 883         case Instruction::URem:   Out << "getURem("; break;
 884         case Instruction::SRem:   Out << "getSRem("; break;
 885         case Instruction::FRem:   Out << "getFRem("; break;
 886         case Instruction::And:    Out << "getAnd("; break;
 887         case Instruction::Or:     Out << "getOr("; break;
 888         case Instruction::Xor:    Out << "getXor("; break;
 889         case Instruction::ICmp:
 890           Out << "getICmp(ICmpInst::ICMP_";
 891           switch (CE->getPredicate()) {
 892           case ICmpInst::ICMP_EQ:  Out << "EQ"; break;
 893           case ICmpInst::ICMP_NE:  Out << "NE"; break;
 894           case ICmpInst::ICMP_SLT: Out << "SLT"; break;
 895           case ICmpInst::ICMP_ULT: Out << "ULT"; break;
 896           case ICmpInst::ICMP_SGT: Out << "SGT"; break;
 897           case ICmpInst::ICMP_UGT: Out << "UGT"; break;
 898           case ICmpInst::ICMP_SLE: Out << "SLE"; break;
 899           case ICmpInst::ICMP_ULE: Out << "ULE"; break;
 900           case ICmpInst::ICMP_SGE: Out << "SGE"; break;
 901           case ICmpInst::ICMP_UGE: Out << "UGE"; break;
 902           default: error("Invalid ICmp Predicate");
 903           }
 904           break;
 905         case Instruction::FCmp:
 906           Out << "getFCmp(FCmpInst::FCMP_";
 907           switch (CE->getPredicate()) {
 908           case FCmpInst::FCMP_FALSE: Out << "FALSE"; break;
 909           case FCmpInst::FCMP_ORD:   Out << "ORD"; break;
 910           case FCmpInst::FCMP_UNO:   Out << "UNO"; break;
 911           case FCmpInst::FCMP_OEQ:   Out << "OEQ"; break;
 912           case FCmpInst::FCMP_UEQ:   Out << "UEQ"; break;
 913           case FCmpInst::FCMP_ONE:   Out << "ONE"; break;
 914           case FCmpInst::FCMP_UNE:   Out << "UNE"; break;
 915           case FCmpInst::FCMP_OLT:   Out << "OLT"; break;
 916           case FCmpInst::FCMP_ULT:   Out << "ULT"; break;
 917           case FCmpInst::FCMP_OGT:   Out << "OGT"; break;
 918           case FCmpInst::FCMP_UGT:   Out << "UGT"; break;
 919           case FCmpInst::FCMP_OLE:   Out << "OLE"; break;
 920           case FCmpInst::FCMP_ULE:   Out << "ULE"; break;
 921           case FCmpInst::FCMP_OGE:   Out << "OGE"; break;
 922           case FCmpInst::FCMP_UGE:   Out << "UGE"; break;
 923           case FCmpInst::FCMP_TRUE:  Out << "TRUE"; break;
 924           default: error("Invalid FCmp Predicate");
 925           }
 926           break;
 927         case Instruction::Shl:     Out << "getShl("; break;
 928         case Instruction::LShr:    Out << "getLShr("; break;
 929         case Instruction::AShr:    Out << "getAShr("; break;
 930         case Instruction::Select:  Out << "getSelect("; break;
 931         case Instruction::ExtractElement: Out << "getExtractElement("; break;
 932         case Instruction::InsertElement:  Out << "getInsertElement("; break;
 933         case Instruction::ShuffleVector:  Out << "getShuffleVector("; break;
 934         default:
 935           error("Invalid constant expression");
 936           break;
 937         }
 938         Out << getCppName(CE->getOperand(0));
 939         for (unsigned i = 1; i < CE->getNumOperands(); ++i)
 940           Out << ", " << getCppName(CE->getOperand(i));
 941         Out << ");";
 942       }
 943     } else {
 944       error("Bad Constant");
 945       Out << "Constant* " << constName << " = 0; ";
 946     }
 947     nl(Out);
 948   }
 949
 950   void CppWriter::printConstants(const Module* M) {
 951     // Traverse all the global variables looking for constant initializers
 952     for (Module::const_global_iterator I = TheModule->global_begin(),
 953            E = TheModule->global_end(); I != E; ++I)
 954       if (I->hasInitializer())
 955         printConstant(I->getInitializer());
 956
 957     // Traverse the LLVM functions looking for constants
 958     for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
 959          FI != FE; ++FI) {
 960       // Add all of the basic blocks and instructions
 961       for (Function::const_iterator BB = FI->begin(),
 962              E = FI->end(); BB != E; ++BB) {
 963         for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
 964              ++I) {
 965           for (unsigned i = 0; i < I->getNumOperands(); ++i) {
 966             if (Constant* C = dyn_cast<Constant>(I->getOperand(i))) {
 967               printConstant(C);
 968             }
 969           }
 970         }
 971       }
 972     }
 973   }
 974
 975   void CppWriter::printVariableUses(const GlobalVariable *GV) {
 976     nl(Out) << "// Type Definitions";
 977     nl(Out);
 978     printType(GV->getType());
 979     if (GV->hasInitializer()) {
 980       Constant* Init = GV->getInitializer();
 981       printType(Init->getType());
 982       if (Function* F = dyn_cast<Function>(Init)) {
 983         nl(Out)<< "/ Function Declarations"; nl(Out);
 984         printFunctionHead(F);
 985       } else if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
 986         nl(Out) << "// Global Variable Declarations"; nl(Out);
 987         printVariableHead(gv);
 988       } else  {
 989         nl(Out) << "// Constant Definitions"; nl(Out);
 990         printConstant(gv);
 991       }
 992       if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
 993         nl(Out) << "// Global Variable Definitions"; nl(Out);
 994         printVariableBody(gv);
 995       }
 996     }
 997   }
 998
 999   void CppWriter::printVariableHead(const GlobalVariable *GV) {
1000     nl(Out) << "GlobalVariable* " << getCppName(GV);
1001     if (is_inline) {
1002       Out << " = mod->getGlobalVariable(getGlobalContext(), ";
1003       printEscapedString(GV->getName());
1004       Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)";
1005       nl(Out) << "if (!" << getCppName(GV) << ") {";
1006       in(); nl(Out) << getCppName(GV);
1007     }
1008     Out << " = new GlobalVariable(/*Module=*/*mod, ";
1009     nl(Out) << "/*Type=*/";
1010     printCppName(GV->getType()->getElementType());
1011     Out << ",";
1012     nl(Out) << "/*isConstant=*/" << (GV->isConstant()?"true":"false");
1013     Out << ",";
1014     nl(Out) << "/*Linkage=*/";
1015     printLinkageType(GV->getLinkage());
1016     Out << ",";
1017     nl(Out) << "/*Initializer=*/0, ";
1018     if (GV->hasInitializer()) {
1019       Out << "// has initializer, specified below";
1020     }
1021     nl(Out) << "/*Name=*/\"";
1022     printEscapedString(GV->getName());
1023     Out << "\");";
1024     nl(Out);
1025
1026     if (GV->hasSection()) {
1027       printCppName(GV);
1028       Out << "->setSection(\"";
1029       printEscapedString(GV->getSection());
1030       Out << "\");";
1031       nl(Out);
1032     }
1033     if (GV->getAlignment()) {
1034       printCppName(GV);
1035       Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");";
1036       nl(Out);
1037     }
1038     if (GV->getVisibility() != GlobalValue::DefaultVisibility) {
1039       printCppName(GV);
1040       Out << "->setVisibility(";
1041       printVisibilityType(GV->getVisibility());
1042       Out << ");";
1043       nl(Out);
1044     }
1045     if (is_inline) {
1046       out(); Out << "}"; nl(Out);
1047     }
1048   }
1049
1050   void CppWriter::printVariableBody(const GlobalVariable *GV) {
1051     if (GV->hasInitializer()) {
1052       printCppName(GV);
1053       Out << "->setInitializer(";
1054       Out << getCppName(GV->getInitializer()) << ");";
1055       nl(Out);
1056     }
1057   }
1058
1059   std::string CppWriter::getOpName(Value* V) {
1060     if (!isa<Instruction>(V) || DefinedValues.find(V) != DefinedValues.end())
1061       return getCppName(V);
1062
1063     // See if its alread in the map of forward references, if so just return the
1064     // name we already set up for it
1065     ForwardRefMap::const_iterator I = ForwardRefs.find(V);
1066     if (I != ForwardRefs.end())
1067       return I->second;
1068
1069     // This is a new forward reference. Generate a unique name for it
1070     std::string result(std::string("fwdref_") + utostr(uniqueNum++));
1071
1072     // Yes, this is a hack. An Argument is the smallest instantiable value that
1073     // we can make as a placeholder for the real value. We'll replace these
1074     // Argument instances later.
1075     Out << "Argument* " << result << " = new Argument("
1076         << getCppName(V->getType()) << ");";
1077     nl(Out);
1078     ForwardRefs[V] = result;
1079     return result;
1080   }
1081
1082   // printInstruction - This member is called for each Instruction in a function.
1083   void CppWriter::printInstruction(const Instruction *I,
1084                                    const std::string& bbname) {
1085     std::string iName(getCppName(I));
1086
1087     // Before we emit this instruction, we need to take care of generating any
1088     // forward references. So, we get the names of all the operands in advance
1089     std::string* opNames = new std::string[I->getNumOperands()];
1090     for (unsigned i = 0; i < I->getNumOperands(); i++) {
1091       opNames[i] = getOpName(I->getOperand(i));
1092     }
1093
1094     switch (I->getOpcode()) {
1095     default:
1096       error("Invalid instruction");
1097       break;
1098
1099     case Instruction::Ret: {
1100       const ReturnInst* ret =  cast<ReturnInst>(I);
1101       Out << "ReturnInst::Create(getGlobalContext(), "
1102           << (ret->getReturnValue() ? opNames[0] + ", " : "") << bbname << ");";
1103       break;
1104     }
1105     case Instruction::Br: {
1106       const BranchInst* br = cast<BranchInst>(I);
1107       Out << "BranchInst::Create(" ;
1108       if (br->getNumOperands() == 3 ) {
1109         Out << opNames[2] << ", "
1110             << opNames[1] << ", "
1111             << opNames[0] << ", ";
1112
1113       } else if (br->getNumOperands() == 1) {
1114         Out << opNames[0] << ", ";
1115       } else {
1116         error("Branch with 2 operands?");
1117       }
1118       Out << bbname << ");";
1119       break;
1120     }
1121     case Instruction::Switch: {
1122       const SwitchInst* sw = cast<SwitchInst>(I);
1123       Out << "SwitchInst* " << iName << " = SwitchInst::Create("
1124           << opNames[0] << ", "
1125           << opNames[1] << ", "
1126           << sw->getNumCases() << ", " << bbname << ");";
1127       nl(Out);
1128       for (unsigned i = 2; i < sw->getNumOperands(); i += 2 ) {
1129         Out << iName << "->addCase("
1130             << opNames[i] << ", "
1131             << opNames[i+1] << ");";
1132         nl(Out);
1133       }
1134       break;
1135     }
1136     case Instruction::Invoke: {
1137       const InvokeInst* inv = cast<InvokeInst>(I);
1138       Out << "std::vector<Value*> " << iName << "_params;";
1139       nl(Out);
1140       for (unsigned i = 3; i < inv->getNumOperands(); ++i) {
1141         Out << iName << "_params.push_back("
1142             << opNames[i] << ");";
1143         nl(Out);
1144       }
1145       Out << "InvokeInst *" << iName << " = InvokeInst::Create("
1146           << opNames[0] << ", "
1147           << opNames[1] << ", "
1148           << opNames[2] << ", "
1149           << iName << "_params.begin(), " << iName << "_params.end(), \"";
1150       printEscapedString(inv->getName());
1151       Out << "\", " << bbname << ");";
1152       nl(Out) << iName << "->setCallingConv(";
1153       printCallingConv(inv->getCallingConv());
1154       Out << ");";
1155       printAttributes(inv->getAttributes(), iName);
1156       Out << iName << "->setAttributes(" << iName << "_PAL);";
1157       nl(Out);
1158       break;
1159     }
1160     case Instruction::Unwind: {
1161       Out << "new UnwindInst("
1162           << bbname << ");";
1163       break;
1164     }
1165     case Instruction::Unreachable:{
1166       Out << "new UnreachableInst("
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(";
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 << "\", " << bbname << ");";
1239       break;
1240     }
1241     case Instruction::ICmp: {
1242       Out << "ICmpInst* " << iName << " = new ICmpInst(";
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 << "\", " << bbname << ");";
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 }