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/MC/MCAsmInfo.h"
26#include "llvm/MC/MCInstrInfo.h"
27#include "llvm/MC/MCSubtargetInfo.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/TargetRegistry.h"
33#include "llvm/ADT/StringExtras.h"
34#include "llvm/Config/config.h"
35#include <algorithm>
36#include <set>
37#include <map>
38using namespace llvm;
39
40static cl::opt<std::string>
41FuncName("cppfname", cl::desc("Specify the name of the generated function"),
42         cl::value_desc("function name"));
43
44enum WhatToGenerate {
45  GenProgram,
46  GenModule,
47  GenContents,
48  GenFunction,
49  GenFunctions,
50  GenInline,
51  GenVariable,
52  GenType
53};
54
55static 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
71static cl::opt<std::string> NameToGenerate("cppfor", cl::Optional,
72  cl::desc("Specify the name of the thing to generate"),
73  cl::init("!bad!"));
74
75extern "C" void LLVMInitializeCppBackendTarget() {
76  // Register the target.
77  RegisterTargetMachine<CPPTargetMachine> X(TheCppBackendTarget);
78}
79
80namespace {
81  typedef std::vector<Type*> TypeList;
82  typedef std::map<Type*,std::string> TypeMap;
83  typedef std::map<const Value*,std::string> ValueMap;
84  typedef std::set<std::string> NameSet;
85  typedef std::set<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    NameSet UsedNames;
98    TypeSet DefinedTypes;
99    ValueSet DefinedValues;
100    ForwardRefMap ForwardRefs;
101    bool is_inline;
102    unsigned indent_level;
103
104  public:
105    static char ID;
106    explicit CppWriter(formatted_raw_ostream &o) :
107      ModulePass(ID), Out(o), uniqueNum(0), is_inline(false), indent_level(0){}
108
109    virtual const char *getPassName() const { return "C++ backend"; }
110
111    bool runOnModule(Module &M);
112
113    void printProgram(const std::string& fname, const std::string& modName );
114    void printModule(const std::string& fname, const std::string& modName );
115    void printContents(const std::string& fname, const std::string& modName );
116    void printFunction(const std::string& fname, const std::string& funcName );
117    void printFunctions();
118    void printInline(const std::string& fname, const std::string& funcName );
119    void printVariable(const std::string& fname, const std::string& varName );
120    void printType(const std::string& fname, const std::string& typeName );
121
122    void error(const std::string& msg);
123
124
125    formatted_raw_ostream& nl(formatted_raw_ostream &Out, int delta = 0);
126    inline void in() { indent_level++; }
127    inline void out() { if (indent_level >0) indent_level--; }
128
129  private:
130    void printLinkageType(GlobalValue::LinkageTypes LT);
131    void printVisibilityType(GlobalValue::VisibilityTypes VisTypes);
132    void printCallingConv(CallingConv::ID cc);
133    void printEscapedString(const std::string& str);
134    void printCFP(const ConstantFP* CFP);
135
136    std::string getCppName(Type* val);
137    inline void printCppName(Type* val);
138
139    std::string getCppName(const Value* val);
140    inline void printCppName(const Value* val);
141
142    void printAttributes(const AttrListPtr &PAL, const std::string &name);
143    void printType(Type* Ty);
144    void printTypes(const Module* M);
145
146    void printConstant(const Constant *CPV);
147    void printConstants(const Module* M);
148
149    void printVariableUses(const GlobalVariable *GV);
150    void printVariableHead(const GlobalVariable *GV);
151    void printVariableBody(const GlobalVariable *GV);
152
153    void printFunctionUses(const Function *F);
154    void printFunctionHead(const Function *F);
155    void printFunctionBody(const Function *F);
156    void printInstruction(const Instruction *I, const std::string& bbname);
157    std::string getOpName(const Value*);
158
159    void printModuleBody();
160  };
161} // end anonymous namespace.
162
163formatted_raw_ostream &CppWriter::nl(formatted_raw_ostream &Out, int delta) {
164  Out << '\n';
165  if (delta >= 0 || indent_level >= unsigned(-delta))
166    indent_level += delta;
167  Out.indent(indent_level);
168  return Out;
169}
170
171static inline void 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
177static std::string getTypePrefix(Type *Ty) {
178  switch (Ty->getTypeID()) {
179  case Type::VoidTyID:     return "void_";
180  case Type::IntegerTyID:
181    return "int" + utostr(cast<IntegerType>(Ty)->getBitWidth()) + "_";
182  case Type::FloatTyID:    return "float_";
183  case Type::DoubleTyID:   return "double_";
184  case Type::LabelTyID:    return "label_";
185  case Type::FunctionTyID: return "func_";
186  case Type::StructTyID:   return "struct_";
187  case Type::ArrayTyID:    return "array_";
188  case Type::PointerTyID:  return "ptr_";
189  case Type::VectorTyID:   return "packed_";
190  default:                 return "other_";
191  }
192  return "unknown_";
193}
194
195void CppWriter::error(const std::string& msg) {
196  report_fatal_error(msg);
197}
198
199// printCFP - Print a floating point constant .. very carefully :)
200// This makes sure that conversion to/from floating yields the same binary
201// result so that we don't lose precision.
202void CppWriter::printCFP(const ConstantFP *CFP) {
203  bool ignored;
204  APFloat APF = APFloat(CFP->getValueAPF());  // copy
205  if (CFP->getType() == Type::getFloatTy(CFP->getContext()))
206    APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &ignored);
207  Out << "ConstantFP::get(mod->getContext(), ";
208  Out << "APFloat(";
209#if HAVE_PRINTF_A
210  char Buffer[100];
211  sprintf(Buffer, "%A", APF.convertToDouble());
212  if ((!strncmp(Buffer, "0x", 2) ||
213       !strncmp(Buffer, "-0x", 3) ||
214       !strncmp(Buffer, "+0x", 3)) &&
215      APF.bitwiseIsEqual(APFloat(atof(Buffer)))) {
216    if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
217      Out << "BitsToDouble(" << Buffer << ")";
218    else
219      Out << "BitsToFloat((float)" << Buffer << ")";
220    Out << ")";
221  } else {
222#endif
223    std::string StrVal = ftostr(CFP->getValueAPF());
224
225    while (StrVal[0] == ' ')
226      StrVal.erase(StrVal.begin());
227
228    // Check to make sure that the stringized number is not some string like
229    // "Inf" or NaN.  Check that the string matches the "[-+]?[0-9]" regex.
230    if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
231         ((StrVal[0] == '-' || StrVal[0] == '+') &&
232          (StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
233        (CFP->isExactlyValue(atof(StrVal.c_str())))) {
234      if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
235        Out <<  StrVal;
236      else
237        Out << StrVal << "f";
238    } else if (CFP->getType() == Type::getDoubleTy(CFP->getContext()))
239      Out << "BitsToDouble(0x"
240          << utohexstr(CFP->getValueAPF().bitcastToAPInt().getZExtValue())
241          << "ULL) /* " << StrVal << " */";
242    else
243      Out << "BitsToFloat(0x"
244          << utohexstr((uint32_t)CFP->getValueAPF().
245                                      bitcastToAPInt().getZExtValue())
246          << "U) /* " << StrVal << " */";
247    Out << ")";
248#if HAVE_PRINTF_A
249  }
250#endif
251  Out << ")";
252}
253
254void CppWriter::printCallingConv(CallingConv::ID cc){
255  // Print the calling convention.
256  switch (cc) {
257  case CallingConv::C:     Out << "CallingConv::C"; break;
258  case CallingConv::Fast:  Out << "CallingConv::Fast"; break;
259  case CallingConv::Cold:  Out << "CallingConv::Cold"; break;
260  case CallingConv::FirstTargetCC: Out << "CallingConv::FirstTargetCC"; break;
261  default:                 Out << cc; break;
262  }
263}
264
265void CppWriter::printLinkageType(GlobalValue::LinkageTypes LT) {
266  switch (LT) {
267  case GlobalValue::InternalLinkage:
268    Out << "GlobalValue::InternalLinkage"; break;
269  case GlobalValue::PrivateLinkage:
270    Out << "GlobalValue::PrivateLinkage"; break;
271  case GlobalValue::LinkerPrivateLinkage:
272    Out << "GlobalValue::LinkerPrivateLinkage"; break;
273  case GlobalValue::LinkerPrivateWeakLinkage:
274    Out << "GlobalValue::LinkerPrivateWeakLinkage"; break;
275  case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
276    Out << "GlobalValue::LinkerPrivateWeakDefAutoLinkage"; break;
277  case GlobalValue::AvailableExternallyLinkage:
278    Out << "GlobalValue::AvailableExternallyLinkage "; break;
279  case GlobalValue::LinkOnceAnyLinkage:
280    Out << "GlobalValue::LinkOnceAnyLinkage "; break;
281  case GlobalValue::LinkOnceODRLinkage:
282    Out << "GlobalValue::LinkOnceODRLinkage "; break;
283  case GlobalValue::WeakAnyLinkage:
284    Out << "GlobalValue::WeakAnyLinkage"; break;
285  case GlobalValue::WeakODRLinkage:
286    Out << "GlobalValue::WeakODRLinkage"; break;
287  case GlobalValue::AppendingLinkage:
288    Out << "GlobalValue::AppendingLinkage"; break;
289  case GlobalValue::ExternalLinkage:
290    Out << "GlobalValue::ExternalLinkage"; break;
291  case GlobalValue::DLLImportLinkage:
292    Out << "GlobalValue::DLLImportLinkage"; break;
293  case GlobalValue::DLLExportLinkage:
294    Out << "GlobalValue::DLLExportLinkage"; break;
295  case GlobalValue::ExternalWeakLinkage:
296    Out << "GlobalValue::ExternalWeakLinkage"; break;
297  case GlobalValue::CommonLinkage:
298    Out << "GlobalValue::CommonLinkage"; break;
299  }
300}
301
302void CppWriter::printVisibilityType(GlobalValue::VisibilityTypes VisType) {
303  switch (VisType) {
304  default: llvm_unreachable("Unknown GVar visibility");
305  case GlobalValue::DefaultVisibility:
306    Out << "GlobalValue::DefaultVisibility";
307    break;
308  case GlobalValue::HiddenVisibility:
309    Out << "GlobalValue::HiddenVisibility";
310    break;
311  case GlobalValue::ProtectedVisibility:
312    Out << "GlobalValue::ProtectedVisibility";
313    break;
314  }
315}
316
317// printEscapedString - Print each character of the specified string, escaping
318// it if it is not printable or if it is an escape char.
319void CppWriter::printEscapedString(const std::string &Str) {
320  for (unsigned i = 0, e = Str.size(); i != e; ++i) {
321    unsigned char C = Str[i];
322    if (isprint(C) && C != '"' && C != '\\') {
323      Out << C;
324    } else {
325      Out << "\\x"
326          << (char) ((C/16  < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
327          << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
328    }
329  }
330}
331
332std::string CppWriter::getCppName(Type* Ty) {
333  // First, handle the primitive types .. easy
334  if (Ty->isPrimitiveType() || Ty->isIntegerTy()) {
335    switch (Ty->getTypeID()) {
336    case Type::VoidTyID:   return "Type::getVoidTy(mod->getContext())";
337    case Type::IntegerTyID: {
338      unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
339      return "IntegerType::get(mod->getContext(), " + utostr(BitWidth) + ")";
340    }
341    case Type::X86_FP80TyID: return "Type::getX86_FP80Ty(mod->getContext())";
342    case Type::FloatTyID:    return "Type::getFloatTy(mod->getContext())";
343    case Type::DoubleTyID:   return "Type::getDoubleTy(mod->getContext())";
344    case Type::LabelTyID:    return "Type::getLabelTy(mod->getContext())";
345    case Type::X86_MMXTyID:  return "Type::getX86_MMXTy(mod->getContext())";
346    default:
347      error("Invalid primitive type");
348      break;
349    }
350    // shouldn't be returned, but make it sensible
351    return "Type::getVoidTy(mod->getContext())";
352  }
353
354  // Now, see if we've seen the type before and return that
355  TypeMap::iterator I = TypeNames.find(Ty);
356  if (I != TypeNames.end())
357    return I->second;
358
359  // Okay, let's build a new name for this type. Start with a prefix
360  const char* prefix = 0;
361  switch (Ty->getTypeID()) {
362  case Type::FunctionTyID:    prefix = "FuncTy_"; break;
363  case Type::StructTyID:      prefix = "StructTy_"; break;
364  case Type::ArrayTyID:       prefix = "ArrayTy_"; break;
365  case Type::PointerTyID:     prefix = "PointerTy_"; break;
366  case Type::VectorTyID:      prefix = "VectorTy_"; break;
367  default:                    prefix = "OtherTy_"; break; // prevent breakage
368  }
369
370  // See if the type has a name in the symboltable and build accordingly
371  std::string name;
372  if (StructType *STy = dyn_cast<StructType>(Ty))
373    if (STy->hasName())
374      name = STy->getName();
375
376  if (name.empty())
377    name = utostr(uniqueNum++);
378
379  name = std::string(prefix) + name;
380  sanitize(name);
381
382  // Save the name
383  return TypeNames[Ty] = name;
384}
385
386void CppWriter::printCppName(Type* Ty) {
387  printEscapedString(getCppName(Ty));
388}
389
390std::string CppWriter::getCppName(const Value* val) {
391  std::string name;
392  ValueMap::iterator I = ValueNames.find(val);
393  if (I != ValueNames.end() && I->first == val)
394    return  I->second;
395
396  if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(val)) {
397    name = std::string("gvar_") +
398      getTypePrefix(GV->getType()->getElementType());
399  } else if (isa<Function>(val)) {
400    name = std::string("func_");
401  } else if (const Constant* C = dyn_cast<Constant>(val)) {
402    name = std::string("const_") + getTypePrefix(C->getType());
403  } else if (const Argument* Arg = dyn_cast<Argument>(val)) {
404    if (is_inline) {
405      unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
406                                      Function::const_arg_iterator(Arg)) + 1;
407      name = std::string("arg_") + utostr(argNum);
408      NameSet::iterator NI = UsedNames.find(name);
409      if (NI != UsedNames.end())
410        name += std::string("_") + utostr(uniqueNum++);
411      UsedNames.insert(name);
412      return ValueNames[val] = name;
413    } else {
414      name = getTypePrefix(val->getType());
415    }
416  } else {
417    name = getTypePrefix(val->getType());
418  }
419  if (val->hasName())
420    name += val->getName();
421  else
422    name += utostr(uniqueNum++);
423  sanitize(name);
424  NameSet::iterator NI = UsedNames.find(name);
425  if (NI != UsedNames.end())
426    name += std::string("_") + utostr(uniqueNum++);
427  UsedNames.insert(name);
428  return ValueNames[val] = name;
429}
430
431void CppWriter::printCppName(const Value* val) {
432  printEscapedString(getCppName(val));
433}
434
435void CppWriter::printAttributes(const AttrListPtr &PAL,
436                                const std::string &name) {
437  Out << "AttrListPtr " << name << "_PAL;";
438  nl(Out);
439  if (!PAL.isEmpty()) {
440    Out << '{'; in(); nl(Out);
441    Out << "SmallVector<AttributeWithIndex, 4> Attrs;"; nl(Out);
442    Out << "AttributeWithIndex PAWI;"; nl(Out);
443    for (unsigned i = 0; i < PAL.getNumSlots(); ++i) {
444      unsigned index = PAL.getSlot(i).Index;
445      Attributes attrs = PAL.getSlot(i).Attrs;
446      Out << "PAWI.Index = " << index << "U; PAWI.Attrs = 0 ";
447#define HANDLE_ATTR(X)                 \
448      if (attrs & Attribute::X)      \
449        Out << " | Attribute::" #X;  \
450      attrs &= ~Attribute::X;
451
452      HANDLE_ATTR(SExt);
453      HANDLE_ATTR(ZExt);
454      HANDLE_ATTR(NoReturn);
455      HANDLE_ATTR(InReg);
456      HANDLE_ATTR(StructRet);
457      HANDLE_ATTR(NoUnwind);
458      HANDLE_ATTR(NoAlias);
459      HANDLE_ATTR(ByVal);
460      HANDLE_ATTR(Nest);
461      HANDLE_ATTR(ReadNone);
462      HANDLE_ATTR(ReadOnly);
463      HANDLE_ATTR(NoInline);
464      HANDLE_ATTR(AlwaysInline);
465      HANDLE_ATTR(OptimizeForSize);
466      HANDLE_ATTR(StackProtect);
467      HANDLE_ATTR(StackProtectReq);
468      HANDLE_ATTR(NoCapture);
469      HANDLE_ATTR(NoRedZone);
470      HANDLE_ATTR(NoImplicitFloat);
471      HANDLE_ATTR(Naked);
472      HANDLE_ATTR(InlineHint);
473      HANDLE_ATTR(ReturnsTwice);
474      HANDLE_ATTR(UWTable);
475      HANDLE_ATTR(NonLazyBind);
476#undef HANDLE_ATTR
477      if (attrs & Attribute::StackAlignment)
478        Out << " | Attribute::constructStackAlignmentFromInt("
479            << Attribute::getStackAlignmentFromAttrs(attrs)
480            << ")";
481      attrs &= ~Attribute::StackAlignment;
482      assert(attrs == 0 && "Unhandled attribute!");
483      Out << ";";
484      nl(Out);
485      Out << "Attrs.push_back(PAWI);";
486      nl(Out);
487    }
488    Out << name << "_PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());";
489    nl(Out);
490    out(); nl(Out);
491    Out << '}'; nl(Out);
492  }
493}
494
495void CppWriter::printType(Type* Ty) {
496  // We don't print definitions for primitive types
497  if (Ty->isPrimitiveType() || Ty->isIntegerTy())
498    return;
499
500  // If we already defined this type, we don't need to define it again.
501  if (DefinedTypes.find(Ty) != DefinedTypes.end())
502    return;
503
504  // Everything below needs the name for the type so get it now.
505  std::string typeName(getCppName(Ty));
506
507  // Print the type definition
508  switch (Ty->getTypeID()) {
509  case Type::FunctionTyID:  {
510    FunctionType* FT = cast<FunctionType>(Ty);
511    Out << "std::vector<Type*>" << typeName << "_args;";
512    nl(Out);
513    FunctionType::param_iterator PI = FT->param_begin();
514    FunctionType::param_iterator PE = FT->param_end();
515    for (; PI != PE; ++PI) {
516      Type* argTy = static_cast<Type*>(*PI);
517      printType(argTy);
518      std::string argName(getCppName(argTy));
519      Out << typeName << "_args.push_back(" << argName;
520      Out << ");";
521      nl(Out);
522    }
523    printType(FT->getReturnType());
524    std::string retTypeName(getCppName(FT->getReturnType()));
525    Out << "FunctionType* " << typeName << " = FunctionType::get(";
526    in(); nl(Out) << "/*Result=*/" << retTypeName;
527    Out << ",";
528    nl(Out) << "/*Params=*/" << typeName << "_args,";
529    nl(Out) << "/*isVarArg=*/" << (FT->isVarArg() ? "true" : "false") << ");";
530    out();
531    nl(Out);
532    break;
533  }
534  case Type::StructTyID: {
535    StructType* ST = cast<StructType>(Ty);
536    if (!ST->isLiteral()) {
537      Out << "StructType *" << typeName << " = mod->getTypeByName(\"";
538      printEscapedString(ST->getName());
539      Out << "\");";
540      nl(Out);
541      Out << "if (!" << typeName << ") {";
542      nl(Out);
543      Out << typeName << " = ";
544      Out << "StructType::create(mod->getContext(), \"";
545      printEscapedString(ST->getName());
546      Out << "\");";
547      nl(Out);
548      Out << "}";
549      nl(Out);
550      // Indicate that this type is now defined.
551      DefinedTypes.insert(Ty);
552    }
553
554    Out << "std::vector<Type*>" << typeName << "_fields;";
555    nl(Out);
556    StructType::element_iterator EI = ST->element_begin();
557    StructType::element_iterator EE = ST->element_end();
558    for (; EI != EE; ++EI) {
559      Type* fieldTy = static_cast<Type*>(*EI);
560      printType(fieldTy);
561      std::string fieldName(getCppName(fieldTy));
562      Out << typeName << "_fields.push_back(" << fieldName;
563      Out << ");";
564      nl(Out);
565    }
566
567    if (ST->isLiteral()) {
568      Out << "StructType *" << typeName << " = ";
569      Out << "StructType::get(" << "mod->getContext(), ";
570    } else {
571      Out << "if (" << typeName << "->isOpaque()) {";
572      nl(Out);
573      Out << typeName << "->setBody(";
574    }
575
576    Out << typeName << "_fields, /*isPacked=*/"
577        << (ST->isPacked() ? "true" : "false") << ");";
578    nl(Out);
579    if (!ST->isLiteral()) {
580      Out << "}";
581      nl(Out);
582    }
583    break;
584  }
585  case Type::ArrayTyID: {
586    ArrayType* AT = cast<ArrayType>(Ty);
587    Type* ET = AT->getElementType();
588    printType(ET);
589    if (DefinedTypes.find(Ty) == DefinedTypes.end()) {
590      std::string elemName(getCppName(ET));
591      Out << "ArrayType* " << typeName << " = ArrayType::get("
592          << elemName
593          << ", " << utostr(AT->getNumElements()) << ");";
594      nl(Out);
595    }
596    break;
597  }
598  case Type::PointerTyID: {
599    PointerType* PT = cast<PointerType>(Ty);
600    Type* ET = PT->getElementType();
601    printType(ET);
602    if (DefinedTypes.find(Ty) == DefinedTypes.end()) {
603      std::string elemName(getCppName(ET));
604      Out << "PointerType* " << typeName << " = PointerType::get("
605          << elemName
606          << ", " << utostr(PT->getAddressSpace()) << ");";
607      nl(Out);
608    }
609    break;
610  }
611  case Type::VectorTyID: {
612    VectorType* PT = cast<VectorType>(Ty);
613    Type* ET = PT->getElementType();
614    printType(ET);
615    if (DefinedTypes.find(Ty) == DefinedTypes.end()) {
616      std::string elemName(getCppName(ET));
617      Out << "VectorType* " << typeName << " = VectorType::get("
618          << elemName
619          << ", " << utostr(PT->getNumElements()) << ");";
620      nl(Out);
621    }
622    break;
623  }
624  default:
625    error("Invalid TypeID");
626  }
627
628  // Indicate that this type is now defined.
629  DefinedTypes.insert(Ty);
630
631  // Finally, separate the type definition from other with a newline.
632  nl(Out);
633}
634
635void CppWriter::printTypes(const Module* M) {
636  // Add all of the global variables to the value table.
637  for (Module::const_global_iterator I = TheModule->global_begin(),
638         E = TheModule->global_end(); I != E; ++I) {
639    if (I->hasInitializer())
640      printType(I->getInitializer()->getType());
641    printType(I->getType());
642  }
643
644  // Add all the functions to the table
645  for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
646       FI != FE; ++FI) {
647    printType(FI->getReturnType());
648    printType(FI->getFunctionType());
649    // Add all the function arguments
650    for (Function::const_arg_iterator AI = FI->arg_begin(),
651           AE = FI->arg_end(); AI != AE; ++AI) {
652      printType(AI->getType());
653    }
654
655    // Add all of the basic blocks and instructions
656    for (Function::const_iterator BB = FI->begin(),
657           E = FI->end(); BB != E; ++BB) {
658      printType(BB->getType());
659      for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
660           ++I) {
661        printType(I->getType());
662        for (unsigned i = 0; i < I->getNumOperands(); ++i)
663          printType(I->getOperand(i)->getType());
664      }
665    }
666  }
667}
668
669
670// printConstant - Print out a constant pool entry...
671void CppWriter::printConstant(const Constant *CV) {
672  // First, if the constant is actually a GlobalValue (variable or function)
673  // or its already in the constant list then we've printed it already and we
674  // can just return.
675  if (isa<GlobalValue>(CV) || ValueNames.find(CV) != ValueNames.end())
676    return;
677
678  std::string constName(getCppName(CV));
679  std::string typeName(getCppName(CV->getType()));
680
681  if (isa<GlobalValue>(CV)) {
682    // Skip variables and functions, we emit them elsewhere
683    return;
684  }
685
686  if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
687    std::string constValue = CI->getValue().toString(10, true);
688    Out << "ConstantInt* " << constName
689        << " = ConstantInt::get(mod->getContext(), APInt("
690        << cast<IntegerType>(CI->getType())->getBitWidth()
691        << ", StringRef(\"" <<  constValue << "\"), 10));";
692  } else if (isa<ConstantAggregateZero>(CV)) {
693    Out << "ConstantAggregateZero* " << constName
694        << " = ConstantAggregateZero::get(" << typeName << ");";
695  } else if (isa<ConstantPointerNull>(CV)) {
696    Out << "ConstantPointerNull* " << constName
697        << " = ConstantPointerNull::get(" << typeName << ");";
698  } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
699    Out << "ConstantFP* " << constName << " = ";
700    printCFP(CFP);
701    Out << ";";
702  } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
703    if (CA->isString() &&
704        CA->getType()->getElementType() ==
705            Type::getInt8Ty(CA->getContext())) {
706      Out << "Constant* " << constName <<
707             " = ConstantArray::get(mod->getContext(), \"";
708      std::string tmp = CA->getAsString();
709      bool nullTerminate = false;
710      if (tmp[tmp.length()-1] == 0) {
711        tmp.erase(tmp.length()-1);
712        nullTerminate = true;
713      }
714      printEscapedString(tmp);
715      // Determine if we want null termination or not.
716      if (nullTerminate)
717        Out << "\", true"; // Indicate that the null terminator should be
718                           // added.
719      else
720        Out << "\", false";// No null terminator
721      Out << ");";
722    } else {
723      Out << "std::vector<Constant*> " << constName << "_elems;";
724      nl(Out);
725      unsigned N = CA->getNumOperands();
726      for (unsigned i = 0; i < N; ++i) {
727        printConstant(CA->getOperand(i)); // recurse to print operands
728        Out << constName << "_elems.push_back("
729            << getCppName(CA->getOperand(i)) << ");";
730        nl(Out);
731      }
732      Out << "Constant* " << constName << " = ConstantArray::get("
733          << typeName << ", " << constName << "_elems);";
734    }
735  } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
736    Out << "std::vector<Constant*> " << constName << "_fields;";
737    nl(Out);
738    unsigned N = CS->getNumOperands();
739    for (unsigned i = 0; i < N; i++) {
740      printConstant(CS->getOperand(i));
741      Out << constName << "_fields.push_back("
742          << getCppName(CS->getOperand(i)) << ");";
743      nl(Out);
744    }
745    Out << "Constant* " << constName << " = ConstantStruct::get("
746        << typeName << ", " << constName << "_fields);";
747  } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
748    Out << "std::vector<Constant*> " << constName << "_elems;";
749    nl(Out);
750    unsigned N = CP->getNumOperands();
751    for (unsigned i = 0; i < N; ++i) {
752      printConstant(CP->getOperand(i));
753      Out << constName << "_elems.push_back("
754          << getCppName(CP->getOperand(i)) << ");";
755      nl(Out);
756    }
757    Out << "Constant* " << constName << " = ConstantVector::get("
758        << typeName << ", " << constName << "_elems);";
759  } else if (isa<UndefValue>(CV)) {
760    Out << "UndefValue* " << constName << " = UndefValue::get("
761        << typeName << ");";
762  } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
763    if (CE->getOpcode() == Instruction::GetElementPtr) {
764      Out << "std::vector<Constant*> " << constName << "_indices;";
765      nl(Out);
766      printConstant(CE->getOperand(0));
767      for (unsigned i = 1; i < CE->getNumOperands(); ++i ) {
768        printConstant(CE->getOperand(i));
769        Out << constName << "_indices.push_back("
770            << getCppName(CE->getOperand(i)) << ");";
771        nl(Out);
772      }
773      Out << "Constant* " << constName
774          << " = ConstantExpr::getGetElementPtr("
775          << getCppName(CE->getOperand(0)) << ", "
776          << constName << "_indices);";
777    } else if (CE->isCast()) {
778      printConstant(CE->getOperand(0));
779      Out << "Constant* " << constName << " = ConstantExpr::getCast(";
780      switch (CE->getOpcode()) {
781      default: llvm_unreachable("Invalid cast opcode");
782      case Instruction::Trunc: Out << "Instruction::Trunc"; break;
783      case Instruction::ZExt:  Out << "Instruction::ZExt"; break;
784      case Instruction::SExt:  Out << "Instruction::SExt"; break;
785      case Instruction::FPTrunc:  Out << "Instruction::FPTrunc"; break;
786      case Instruction::FPExt:  Out << "Instruction::FPExt"; break;
787      case Instruction::FPToUI:  Out << "Instruction::FPToUI"; break;
788      case Instruction::FPToSI:  Out << "Instruction::FPToSI"; break;
789      case Instruction::UIToFP:  Out << "Instruction::UIToFP"; break;
790      case Instruction::SIToFP:  Out << "Instruction::SIToFP"; break;
791      case Instruction::PtrToInt:  Out << "Instruction::PtrToInt"; break;
792      case Instruction::IntToPtr:  Out << "Instruction::IntToPtr"; break;
793      case Instruction::BitCast:  Out << "Instruction::BitCast"; break;
794      }
795      Out << ", " << getCppName(CE->getOperand(0)) << ", "
796          << getCppName(CE->getType()) << ");";
797    } else {
798      unsigned N = CE->getNumOperands();
799      for (unsigned i = 0; i < N; ++i ) {
800        printConstant(CE->getOperand(i));
801      }
802      Out << "Constant* " << constName << " = ConstantExpr::";
803      switch (CE->getOpcode()) {
804      case Instruction::Add:    Out << "getAdd(";  break;
805      case Instruction::FAdd:   Out << "getFAdd(";  break;
806      case Instruction::Sub:    Out << "getSub("; break;
807      case Instruction::FSub:   Out << "getFSub("; break;
808      case Instruction::Mul:    Out << "getMul("; break;
809      case Instruction::FMul:   Out << "getFMul("; break;
810      case Instruction::UDiv:   Out << "getUDiv("; break;
811      case Instruction::SDiv:   Out << "getSDiv("; break;
812      case Instruction::FDiv:   Out << "getFDiv("; break;
813      case Instruction::URem:   Out << "getURem("; break;
814      case Instruction::SRem:   Out << "getSRem("; break;
815      case Instruction::FRem:   Out << "getFRem("; break;
816      case Instruction::And:    Out << "getAnd("; break;
817      case Instruction::Or:     Out << "getOr("; break;
818      case Instruction::Xor:    Out << "getXor("; break;
819      case Instruction::ICmp:
820        Out << "getICmp(ICmpInst::ICMP_";
821        switch (CE->getPredicate()) {
822        case ICmpInst::ICMP_EQ:  Out << "EQ"; break;
823        case ICmpInst::ICMP_NE:  Out << "NE"; break;
824        case ICmpInst::ICMP_SLT: Out << "SLT"; break;
825        case ICmpInst::ICMP_ULT: Out << "ULT"; break;
826        case ICmpInst::ICMP_SGT: Out << "SGT"; break;
827        case ICmpInst::ICMP_UGT: Out << "UGT"; break;
828        case ICmpInst::ICMP_SLE: Out << "SLE"; break;
829        case ICmpInst::ICMP_ULE: Out << "ULE"; break;
830        case ICmpInst::ICMP_SGE: Out << "SGE"; break;
831        case ICmpInst::ICMP_UGE: Out << "UGE"; break;
832        default: error("Invalid ICmp Predicate");
833        }
834        break;
835      case Instruction::FCmp:
836        Out << "getFCmp(FCmpInst::FCMP_";
837        switch (CE->getPredicate()) {
838        case FCmpInst::FCMP_FALSE: Out << "FALSE"; break;
839        case FCmpInst::FCMP_ORD:   Out << "ORD"; break;
840        case FCmpInst::FCMP_UNO:   Out << "UNO"; break;
841        case FCmpInst::FCMP_OEQ:   Out << "OEQ"; break;
842        case FCmpInst::FCMP_UEQ:   Out << "UEQ"; break;
843        case FCmpInst::FCMP_ONE:   Out << "ONE"; break;
844        case FCmpInst::FCMP_UNE:   Out << "UNE"; break;
845        case FCmpInst::FCMP_OLT:   Out << "OLT"; break;
846        case FCmpInst::FCMP_ULT:   Out << "ULT"; break;
847        case FCmpInst::FCMP_OGT:   Out << "OGT"; break;
848        case FCmpInst::FCMP_UGT:   Out << "UGT"; break;
849        case FCmpInst::FCMP_OLE:   Out << "OLE"; break;
850        case FCmpInst::FCMP_ULE:   Out << "ULE"; break;
851        case FCmpInst::FCMP_OGE:   Out << "OGE"; break;
852        case FCmpInst::FCMP_UGE:   Out << "UGE"; break;
853        case FCmpInst::FCMP_TRUE:  Out << "TRUE"; break;
854        default: error("Invalid FCmp Predicate");
855        }
856        break;
857      case Instruction::Shl:     Out << "getShl("; break;
858      case Instruction::LShr:    Out << "getLShr("; break;
859      case Instruction::AShr:    Out << "getAShr("; break;
860      case Instruction::Select:  Out << "getSelect("; break;
861      case Instruction::ExtractElement: Out << "getExtractElement("; break;
862      case Instruction::InsertElement:  Out << "getInsertElement("; break;
863      case Instruction::ShuffleVector:  Out << "getShuffleVector("; break;
864      default:
865        error("Invalid constant expression");
866        break;
867      }
868      Out << getCppName(CE->getOperand(0));
869      for (unsigned i = 1; i < CE->getNumOperands(); ++i)
870        Out << ", " << getCppName(CE->getOperand(i));
871      Out << ");";
872    }
873  } else if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV)) {
874    Out << "Constant* " << constName << " = ";
875    Out << "BlockAddress::get(" << getOpName(BA->getBasicBlock()) << ");";
876  } else {
877    error("Bad Constant");
878    Out << "Constant* " << constName << " = 0; ";
879  }
880  nl(Out);
881}
882
883void CppWriter::printConstants(const Module* M) {
884  // Traverse all the global variables looking for constant initializers
885  for (Module::const_global_iterator I = TheModule->global_begin(),
886         E = TheModule->global_end(); I != E; ++I)
887    if (I->hasInitializer())
888      printConstant(I->getInitializer());
889
890  // Traverse the LLVM functions looking for constants
891  for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
892       FI != FE; ++FI) {
893    // Add all of the basic blocks and instructions
894    for (Function::const_iterator BB = FI->begin(),
895           E = FI->end(); BB != E; ++BB) {
896      for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
897           ++I) {
898        for (unsigned i = 0; i < I->getNumOperands(); ++i) {
899          if (Constant* C = dyn_cast<Constant>(I->getOperand(i))) {
900            printConstant(C);
901          }
902        }
903      }
904    }
905  }
906}
907
908void CppWriter::printVariableUses(const GlobalVariable *GV) {
909  nl(Out) << "// Type Definitions";
910  nl(Out);
911  printType(GV->getType());
912  if (GV->hasInitializer()) {
913    const Constant *Init = GV->getInitializer();
914    printType(Init->getType());
915    if (const Function *F = dyn_cast<Function>(Init)) {
916      nl(Out)<< "/ Function Declarations"; nl(Out);
917      printFunctionHead(F);
918    } else if (const GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
919      nl(Out) << "// Global Variable Declarations"; nl(Out);
920      printVariableHead(gv);
921
922      nl(Out) << "// Global Variable Definitions"; nl(Out);
923      printVariableBody(gv);
924    } else  {
925      nl(Out) << "// Constant Definitions"; nl(Out);
926      printConstant(Init);
927    }
928  }
929}
930
931void CppWriter::printVariableHead(const GlobalVariable *GV) {
932  nl(Out) << "GlobalVariable* " << getCppName(GV);
933  if (is_inline) {
934    Out << " = mod->getGlobalVariable(mod->getContext(), ";
935    printEscapedString(GV->getName());
936    Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)";
937    nl(Out) << "if (!" << getCppName(GV) << ") {";
938    in(); nl(Out) << getCppName(GV);
939  }
940  Out << " = new GlobalVariable(/*Module=*/*mod, ";
941  nl(Out) << "/*Type=*/";
942  printCppName(GV->getType()->getElementType());
943  Out << ",";
944  nl(Out) << "/*isConstant=*/" << (GV->isConstant()?"true":"false");
945  Out << ",";
946  nl(Out) << "/*Linkage=*/";
947  printLinkageType(GV->getLinkage());
948  Out << ",";
949  nl(Out) << "/*Initializer=*/0, ";
950  if (GV->hasInitializer()) {
951    Out << "// has initializer, specified below";
952  }
953  nl(Out) << "/*Name=*/\"";
954  printEscapedString(GV->getName());
955  Out << "\");";
956  nl(Out);
957
958  if (GV->hasSection()) {
959    printCppName(GV);
960    Out << "->setSection(\"";
961    printEscapedString(GV->getSection());
962    Out << "\");";
963    nl(Out);
964  }
965  if (GV->getAlignment()) {
966    printCppName(GV);
967    Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");";
968    nl(Out);
969  }
970  if (GV->getVisibility() != GlobalValue::DefaultVisibility) {
971    printCppName(GV);
972    Out << "->setVisibility(";
973    printVisibilityType(GV->getVisibility());
974    Out << ");";
975    nl(Out);
976  }
977  if (GV->isThreadLocal()) {
978    printCppName(GV);
979    Out << "->setThreadLocal(true);";
980    nl(Out);
981  }
982  if (is_inline) {
983    out(); Out << "}"; nl(Out);
984  }
985}
986
987void CppWriter::printVariableBody(const GlobalVariable *GV) {
988  if (GV->hasInitializer()) {
989    printCppName(GV);
990    Out << "->setInitializer(";
991    Out << getCppName(GV->getInitializer()) << ");";
992    nl(Out);
993  }
994}
995
996std::string CppWriter::getOpName(const Value* V) {
997  if (!isa<Instruction>(V) || DefinedValues.find(V) != DefinedValues.end())
998    return getCppName(V);
999
1000  // See if its alread in the map of forward references, if so just return the
1001  // name we already set up for it
1002  ForwardRefMap::const_iterator I = ForwardRefs.find(V);
1003  if (I != ForwardRefs.end())
1004    return I->second;
1005
1006  // This is a new forward reference. Generate a unique name for it
1007  std::string result(std::string("fwdref_") + utostr(uniqueNum++));
1008
1009  // Yes, this is a hack. An Argument is the smallest instantiable value that
1010  // we can make as a placeholder for the real value. We'll replace these
1011  // Argument instances later.
1012  Out << "Argument* " << result << " = new Argument("
1013      << getCppName(V->getType()) << ");";
1014  nl(Out);
1015  ForwardRefs[V] = result;
1016  return result;
1017}
1018
1019// printInstruction - This member is called for each Instruction in a function.
1020void CppWriter::printInstruction(const Instruction *I,
1021                                 const std::string& bbname) {
1022  std::string iName(getCppName(I));
1023
1024  // Before we emit this instruction, we need to take care of generating any
1025  // forward references. So, we get the names of all the operands in advance
1026  const unsigned Ops(I->getNumOperands());
1027  std::string* opNames = new std::string[Ops];
1028  for (unsigned i = 0; i < Ops; i++)
1029    opNames[i] = getOpName(I->getOperand(i));
1030
1031  switch (I->getOpcode()) {
1032  default:
1033    error("Invalid instruction");
1034    break;
1035
1036  case Instruction::Ret: {
1037    const ReturnInst* ret =  cast<ReturnInst>(I);
1038    Out << "ReturnInst::Create(mod->getContext(), "
1039        << (ret->getReturnValue() ? opNames[0] + ", " : "") << bbname << ");";
1040    break;
1041  }
1042  case Instruction::Br: {
1043    const BranchInst* br = cast<BranchInst>(I);
1044    Out << "BranchInst::Create(" ;
1045    if (br->getNumOperands() == 3) {
1046      Out << opNames[2] << ", "
1047          << opNames[1] << ", "
1048          << opNames[0] << ", ";
1049
1050    } else if (br->getNumOperands() == 1) {
1051      Out << opNames[0] << ", ";
1052    } else {
1053      error("Branch with 2 operands?");
1054    }
1055    Out << bbname << ");";
1056    break;
1057  }
1058  case Instruction::Switch: {
1059    const SwitchInst *SI = cast<SwitchInst>(I);
1060    Out << "SwitchInst* " << iName << " = SwitchInst::Create("
1061        << getOpName(SI->getCondition()) << ", "
1062        << getOpName(SI->getDefaultDest()) << ", "
1063        << SI->getNumCases() << ", " << bbname << ");";
1064    nl(Out);
1065    unsigned NumCases = SI->getNumCases();
1066    for (unsigned i = 1; i < NumCases; ++i) {
1067      const ConstantInt* CaseVal = SI->getCaseValue(i);
1068      const BasicBlock* BB = SI->getSuccessor(i);
1069      Out << iName << "->addCase("
1070          << getOpName(CaseVal) << ", "
1071          << getOpName(BB) << ");";
1072      nl(Out);
1073    }
1074    break;
1075  }
1076  case Instruction::IndirectBr: {
1077    const IndirectBrInst *IBI = cast<IndirectBrInst>(I);
1078    Out << "IndirectBrInst *" << iName << " = IndirectBrInst::Create("
1079        << opNames[0] << ", " << IBI->getNumDestinations() << ");";
1080    nl(Out);
1081    for (unsigned i = 1; i != IBI->getNumOperands(); ++i) {
1082      Out << iName << "->addDestination(" << opNames[i] << ");";
1083      nl(Out);
1084    }
1085    break;
1086  }
1087  case Instruction::Resume: {
1088    Out << "ResumeInst::Create(mod->getContext(), " << opNames[0]
1089        << ", " << bbname << ");";
1090    break;
1091  }
1092  case Instruction::Invoke: {
1093    const InvokeInst* inv = cast<InvokeInst>(I);
1094    Out << "std::vector<Value*> " << iName << "_params;";
1095    nl(Out);
1096    for (unsigned i = 0; i < inv->getNumArgOperands(); ++i) {
1097      Out << iName << "_params.push_back("
1098          << getOpName(inv->getArgOperand(i)) << ");";
1099      nl(Out);
1100    }
1101    // FIXME: This shouldn't use magic numbers -3, -2, and -1.
1102    Out << "InvokeInst *" << iName << " = InvokeInst::Create("
1103        << getOpName(inv->getCalledFunction()) << ", "
1104        << getOpName(inv->getNormalDest()) << ", "
1105        << getOpName(inv->getUnwindDest()) << ", "
1106        << iName << "_params, \"";
1107    printEscapedString(inv->getName());
1108    Out << "\", " << bbname << ");";
1109    nl(Out) << iName << "->setCallingConv(";
1110    printCallingConv(inv->getCallingConv());
1111    Out << ");";
1112    printAttributes(inv->getAttributes(), iName);
1113    Out << iName << "->setAttributes(" << iName << "_PAL);";
1114    nl(Out);
1115    break;
1116  }
1117  case Instruction::Unwind: {
1118    Out << "new UnwindInst("
1119        << bbname << ");";
1120    break;
1121  }
1122  case Instruction::Unreachable: {
1123    Out << "new UnreachableInst("
1124        << "mod->getContext(), "
1125        << bbname << ");";
1126    break;
1127  }
1128  case Instruction::Add:
1129  case Instruction::FAdd:
1130  case Instruction::Sub:
1131  case Instruction::FSub:
1132  case Instruction::Mul:
1133  case Instruction::FMul:
1134  case Instruction::UDiv:
1135  case Instruction::SDiv:
1136  case Instruction::FDiv:
1137  case Instruction::URem:
1138  case Instruction::SRem:
1139  case Instruction::FRem:
1140  case Instruction::And:
1141  case Instruction::Or:
1142  case Instruction::Xor:
1143  case Instruction::Shl:
1144  case Instruction::LShr:
1145  case Instruction::AShr:{
1146    Out << "BinaryOperator* " << iName << " = BinaryOperator::Create(";
1147    switch (I->getOpcode()) {
1148    case Instruction::Add: Out << "Instruction::Add"; break;
1149    case Instruction::FAdd: Out << "Instruction::FAdd"; break;
1150    case Instruction::Sub: Out << "Instruction::Sub"; break;
1151    case Instruction::FSub: Out << "Instruction::FSub"; break;
1152    case Instruction::Mul: Out << "Instruction::Mul"; break;
1153    case Instruction::FMul: Out << "Instruction::FMul"; break;
1154    case Instruction::UDiv:Out << "Instruction::UDiv"; break;
1155    case Instruction::SDiv:Out << "Instruction::SDiv"; break;
1156    case Instruction::FDiv:Out << "Instruction::FDiv"; break;
1157    case Instruction::URem:Out << "Instruction::URem"; break;
1158    case Instruction::SRem:Out << "Instruction::SRem"; break;
1159    case Instruction::FRem:Out << "Instruction::FRem"; break;
1160    case Instruction::And: Out << "Instruction::And"; break;
1161    case Instruction::Or:  Out << "Instruction::Or";  break;
1162    case Instruction::Xor: Out << "Instruction::Xor"; break;
1163    case Instruction::Shl: Out << "Instruction::Shl"; break;
1164    case Instruction::LShr:Out << "Instruction::LShr"; break;
1165    case Instruction::AShr:Out << "Instruction::AShr"; break;
1166    default: Out << "Instruction::BadOpCode"; break;
1167    }
1168    Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1169    printEscapedString(I->getName());
1170    Out << "\", " << bbname << ");";
1171    break;
1172  }
1173  case Instruction::FCmp: {
1174    Out << "FCmpInst* " << iName << " = new FCmpInst(*" << bbname << ", ";
1175    switch (cast<FCmpInst>(I)->getPredicate()) {
1176    case FCmpInst::FCMP_FALSE: Out << "FCmpInst::FCMP_FALSE"; break;
1177    case FCmpInst::FCMP_OEQ  : Out << "FCmpInst::FCMP_OEQ"; break;
1178    case FCmpInst::FCMP_OGT  : Out << "FCmpInst::FCMP_OGT"; break;
1179    case FCmpInst::FCMP_OGE  : Out << "FCmpInst::FCMP_OGE"; break;
1180    case FCmpInst::FCMP_OLT  : Out << "FCmpInst::FCMP_OLT"; break;
1181    case FCmpInst::FCMP_OLE  : Out << "FCmpInst::FCMP_OLE"; break;
1182    case FCmpInst::FCMP_ONE  : Out << "FCmpInst::FCMP_ONE"; break;
1183    case FCmpInst::FCMP_ORD  : Out << "FCmpInst::FCMP_ORD"; break;
1184    case FCmpInst::FCMP_UNO  : Out << "FCmpInst::FCMP_UNO"; break;
1185    case FCmpInst::FCMP_UEQ  : Out << "FCmpInst::FCMP_UEQ"; break;
1186    case FCmpInst::FCMP_UGT  : Out << "FCmpInst::FCMP_UGT"; break;
1187    case FCmpInst::FCMP_UGE  : Out << "FCmpInst::FCMP_UGE"; break;
1188    case FCmpInst::FCMP_ULT  : Out << "FCmpInst::FCMP_ULT"; break;
1189    case FCmpInst::FCMP_ULE  : Out << "FCmpInst::FCMP_ULE"; break;
1190    case FCmpInst::FCMP_UNE  : Out << "FCmpInst::FCMP_UNE"; break;
1191    case FCmpInst::FCMP_TRUE : Out << "FCmpInst::FCMP_TRUE"; break;
1192    default: Out << "FCmpInst::BAD_ICMP_PREDICATE"; break;
1193    }
1194    Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1195    printEscapedString(I->getName());
1196    Out << "\");";
1197    break;
1198  }
1199  case Instruction::ICmp: {
1200    Out << "ICmpInst* " << iName << " = new ICmpInst(*" << bbname << ", ";
1201    switch (cast<ICmpInst>(I)->getPredicate()) {
1202    case ICmpInst::ICMP_EQ:  Out << "ICmpInst::ICMP_EQ";  break;
1203    case ICmpInst::ICMP_NE:  Out << "ICmpInst::ICMP_NE";  break;
1204    case ICmpInst::ICMP_ULE: Out << "ICmpInst::ICMP_ULE"; break;
1205    case ICmpInst::ICMP_SLE: Out << "ICmpInst::ICMP_SLE"; break;
1206    case ICmpInst::ICMP_UGE: Out << "ICmpInst::ICMP_UGE"; break;
1207    case ICmpInst::ICMP_SGE: Out << "ICmpInst::ICMP_SGE"; break;
1208    case ICmpInst::ICMP_ULT: Out << "ICmpInst::ICMP_ULT"; break;
1209    case ICmpInst::ICMP_SLT: Out << "ICmpInst::ICMP_SLT"; break;
1210    case ICmpInst::ICMP_UGT: Out << "ICmpInst::ICMP_UGT"; break;
1211    case ICmpInst::ICMP_SGT: Out << "ICmpInst::ICMP_SGT"; break;
1212    default: Out << "ICmpInst::BAD_ICMP_PREDICATE"; break;
1213    }
1214    Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1215    printEscapedString(I->getName());
1216    Out << "\");";
1217    break;
1218  }
1219  case Instruction::Alloca: {
1220    const AllocaInst* allocaI = cast<AllocaInst>(I);
1221    Out << "AllocaInst* " << iName << " = new AllocaInst("
1222        << getCppName(allocaI->getAllocatedType()) << ", ";
1223    if (allocaI->isArrayAllocation())
1224      Out << opNames[0] << ", ";
1225    Out << "\"";
1226    printEscapedString(allocaI->getName());
1227    Out << "\", " << bbname << ");";
1228    if (allocaI->getAlignment())
1229      nl(Out) << iName << "->setAlignment("
1230          << allocaI->getAlignment() << ");";
1231    break;
1232  }
1233  case Instruction::Load: {
1234    const LoadInst* load = cast<LoadInst>(I);
1235    Out << "LoadInst* " << iName << " = new LoadInst("
1236        << opNames[0] << ", \"";
1237    printEscapedString(load->getName());
1238    Out << "\", " << (load->isVolatile() ? "true" : "false" )
1239        << ", " << bbname << ");";
1240    break;
1241  }
1242  case Instruction::Store: {
1243    const StoreInst* store = cast<StoreInst>(I);
1244    Out << " new StoreInst("
1245        << opNames[0] << ", "
1246        << opNames[1] << ", "
1247        << (store->isVolatile() ? "true" : "false")
1248        << ", " << bbname << ");";
1249    break;
1250  }
1251  case Instruction::GetElementPtr: {
1252    const GetElementPtrInst* gep = cast<GetElementPtrInst>(I);
1253    if (gep->getNumOperands() <= 2) {
1254      Out << "GetElementPtrInst* " << iName << " = GetElementPtrInst::Create("
1255          << opNames[0];
1256      if (gep->getNumOperands() == 2)
1257        Out << ", " << opNames[1];
1258    } else {
1259      Out << "std::vector<Value*> " << iName << "_indices;";
1260      nl(Out);
1261      for (unsigned i = 1; i < gep->getNumOperands(); ++i ) {
1262        Out << iName << "_indices.push_back("
1263            << opNames[i] << ");";
1264        nl(Out);
1265      }
1266      Out << "Instruction* " << iName << " = GetElementPtrInst::Create("
1267          << opNames[0] << ", " << iName << "_indices";
1268    }
1269    Out << ", \"";
1270    printEscapedString(gep->getName());
1271    Out << "\", " << bbname << ");";
1272    break;
1273  }
1274  case Instruction::PHI: {
1275    const PHINode* phi = cast<PHINode>(I);
1276
1277    Out << "PHINode* " << iName << " = PHINode::Create("
1278        << getCppName(phi->getType()) << ", "
1279        << phi->getNumIncomingValues() << ", \"";
1280    printEscapedString(phi->getName());
1281    Out << "\", " << bbname << ");";
1282    nl(Out);
1283    for (unsigned i = 0; i < phi->getNumIncomingValues(); ++i) {
1284      Out << iName << "->addIncoming("
1285          << opNames[PHINode::getOperandNumForIncomingValue(i)] << ", "
1286          << getOpName(phi->getIncomingBlock(i)) << ");";
1287      nl(Out);
1288    }
1289    break;
1290  }
1291  case Instruction::Trunc:
1292  case Instruction::ZExt:
1293  case Instruction::SExt:
1294  case Instruction::FPTrunc:
1295  case Instruction::FPExt:
1296  case Instruction::FPToUI:
1297  case Instruction::FPToSI:
1298  case Instruction::UIToFP:
1299  case Instruction::SIToFP:
1300  case Instruction::PtrToInt:
1301  case Instruction::IntToPtr:
1302  case Instruction::BitCast: {
1303    const CastInst* cst = cast<CastInst>(I);
1304    Out << "CastInst* " << iName << " = new ";
1305    switch (I->getOpcode()) {
1306    case Instruction::Trunc:    Out << "TruncInst"; break;
1307    case Instruction::ZExt:     Out << "ZExtInst"; break;
1308    case Instruction::SExt:     Out << "SExtInst"; break;
1309    case Instruction::FPTrunc:  Out << "FPTruncInst"; break;
1310    case Instruction::FPExt:    Out << "FPExtInst"; break;
1311    case Instruction::FPToUI:   Out << "FPToUIInst"; break;
1312    case Instruction::FPToSI:   Out << "FPToSIInst"; break;
1313    case Instruction::UIToFP:   Out << "UIToFPInst"; break;
1314    case Instruction::SIToFP:   Out << "SIToFPInst"; break;
1315    case Instruction::PtrToInt: Out << "PtrToIntInst"; break;
1316    case Instruction::IntToPtr: Out << "IntToPtrInst"; break;
1317    case Instruction::BitCast:  Out << "BitCastInst"; break;
1318    default: assert(0 && "Unreachable"); break;
1319    }
1320    Out << "(" << opNames[0] << ", "
1321        << getCppName(cst->getType()) << ", \"";
1322    printEscapedString(cst->getName());
1323    Out << "\", " << bbname << ");";
1324    break;
1325  }
1326  case Instruction::Call: {
1327    const CallInst* call = cast<CallInst>(I);
1328    if (const InlineAsm* ila = dyn_cast<InlineAsm>(call->getCalledValue())) {
1329      Out << "InlineAsm* " << getCppName(ila) << " = InlineAsm::get("
1330          << getCppName(ila->getFunctionType()) << ", \""
1331          << ila->getAsmString() << "\", \""
1332          << ila->getConstraintString() << "\","
1333          << (ila->hasSideEffects() ? "true" : "false") << ");";
1334      nl(Out);
1335    }
1336    if (call->getNumArgOperands() > 1) {
1337      Out << "std::vector<Value*> " << iName << "_params;";
1338      nl(Out);
1339      for (unsigned i = 0; i < call->getNumArgOperands(); ++i) {
1340        Out << iName << "_params.push_back(" << opNames[i] << ");";
1341        nl(Out);
1342      }
1343      Out << "CallInst* " << iName << " = CallInst::Create("
1344          << opNames[call->getNumArgOperands()] << ", "
1345          << iName << "_params, \"";
1346    } else if (call->getNumArgOperands() == 1) {
1347      Out << "CallInst* " << iName << " = CallInst::Create("
1348          << opNames[call->getNumArgOperands()] << ", " << opNames[0] << ", \"";
1349    } else {
1350      Out << "CallInst* " << iName << " = CallInst::Create("
1351          << opNames[call->getNumArgOperands()] << ", \"";
1352    }
1353    printEscapedString(call->getName());
1354    Out << "\", " << bbname << ");";
1355    nl(Out) << iName << "->setCallingConv(";
1356    printCallingConv(call->getCallingConv());
1357    Out << ");";
1358    nl(Out) << iName << "->setTailCall("
1359        << (call->isTailCall() ? "true" : "false");
1360    Out << ");";
1361    nl(Out);
1362    printAttributes(call->getAttributes(), iName);
1363    Out << iName << "->setAttributes(" << iName << "_PAL);";
1364    nl(Out);
1365    break;
1366  }
1367  case Instruction::Select: {
1368    const SelectInst* sel = cast<SelectInst>(I);
1369    Out << "SelectInst* " << getCppName(sel) << " = SelectInst::Create(";
1370    Out << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1371    printEscapedString(sel->getName());
1372    Out << "\", " << bbname << ");";
1373    break;
1374  }
1375  case Instruction::UserOp1:
1376    /// FALL THROUGH
1377  case Instruction::UserOp2: {
1378    /// FIXME: What should be done here?
1379    break;
1380  }
1381  case Instruction::VAArg: {
1382    const VAArgInst* va = cast<VAArgInst>(I);
1383    Out << "VAArgInst* " << getCppName(va) << " = new VAArgInst("
1384        << opNames[0] << ", " << getCppName(va->getType()) << ", \"";
1385    printEscapedString(va->getName());
1386    Out << "\", " << bbname << ");";
1387    break;
1388  }
1389  case Instruction::ExtractElement: {
1390    const ExtractElementInst* eei = cast<ExtractElementInst>(I);
1391    Out << "ExtractElementInst* " << getCppName(eei)
1392        << " = new ExtractElementInst(" << opNames[0]
1393        << ", " << opNames[1] << ", \"";
1394    printEscapedString(eei->getName());
1395    Out << "\", " << bbname << ");";
1396    break;
1397  }
1398  case Instruction::InsertElement: {
1399    const InsertElementInst* iei = cast<InsertElementInst>(I);
1400    Out << "InsertElementInst* " << getCppName(iei)
1401        << " = InsertElementInst::Create(" << opNames[0]
1402        << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1403    printEscapedString(iei->getName());
1404    Out << "\", " << bbname << ");";
1405    break;
1406  }
1407  case Instruction::ShuffleVector: {
1408    const ShuffleVectorInst* svi = cast<ShuffleVectorInst>(I);
1409    Out << "ShuffleVectorInst* " << getCppName(svi)
1410        << " = new ShuffleVectorInst(" << opNames[0]
1411        << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1412    printEscapedString(svi->getName());
1413    Out << "\", " << bbname << ");";
1414    break;
1415  }
1416  case Instruction::ExtractValue: {
1417    const ExtractValueInst *evi = cast<ExtractValueInst>(I);
1418    Out << "std::vector<unsigned> " << iName << "_indices;";
1419    nl(Out);
1420    for (unsigned i = 0; i < evi->getNumIndices(); ++i) {
1421      Out << iName << "_indices.push_back("
1422          << evi->idx_begin()[i] << ");";
1423      nl(Out);
1424    }
1425    Out << "ExtractValueInst* " << getCppName(evi)
1426        << " = ExtractValueInst::Create(" << opNames[0]
1427        << ", "
1428        << iName << "_indices, \"";
1429    printEscapedString(evi->getName());
1430    Out << "\", " << bbname << ");";
1431    break;
1432  }
1433  case Instruction::InsertValue: {
1434    const InsertValueInst *ivi = cast<InsertValueInst>(I);
1435    Out << "std::vector<unsigned> " << iName << "_indices;";
1436    nl(Out);
1437    for (unsigned i = 0; i < ivi->getNumIndices(); ++i) {
1438      Out << iName << "_indices.push_back("
1439          << ivi->idx_begin()[i] << ");";
1440      nl(Out);
1441    }
1442    Out << "InsertValueInst* " << getCppName(ivi)
1443        << " = InsertValueInst::Create(" << opNames[0]
1444        << ", " << opNames[1] << ", "
1445        << iName << "_indices, \"";
1446    printEscapedString(ivi->getName());
1447    Out << "\", " << bbname << ");";
1448    break;
1449  }
1450  }
1451  DefinedValues.insert(I);
1452  nl(Out);
1453  delete [] opNames;
1454}
1455
1456// Print out the types, constants and declarations needed by one function
1457void CppWriter::printFunctionUses(const Function* F) {
1458  nl(Out) << "// Type Definitions"; nl(Out);
1459  if (!is_inline) {
1460    // Print the function's return type
1461    printType(F->getReturnType());
1462
1463    // Print the function's function type
1464    printType(F->getFunctionType());
1465
1466    // Print the types of each of the function's arguments
1467    for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1468         AI != AE; ++AI) {
1469      printType(AI->getType());
1470    }
1471  }
1472
1473  // Print type definitions for every type referenced by an instruction and
1474  // make a note of any global values or constants that are referenced
1475  SmallPtrSet<GlobalValue*,64> gvs;
1476  SmallPtrSet<Constant*,64> consts;
1477  for (Function::const_iterator BB = F->begin(), BE = F->end();
1478       BB != BE; ++BB){
1479    for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
1480         I != E; ++I) {
1481      // Print the type of the instruction itself
1482      printType(I->getType());
1483
1484      // Print the type of each of the instruction's operands
1485      for (unsigned i = 0; i < I->getNumOperands(); ++i) {
1486        Value* operand = I->getOperand(i);
1487        printType(operand->getType());
1488
1489        // If the operand references a GVal or Constant, make a note of it
1490        if (GlobalValue* GV = dyn_cast<GlobalValue>(operand)) {
1491          gvs.insert(GV);
1492          if (GenerationType != GenFunction)
1493            if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV))
1494              if (GVar->hasInitializer())
1495                consts.insert(GVar->getInitializer());
1496        } else if (Constant* C = dyn_cast<Constant>(operand)) {
1497          consts.insert(C);
1498          for (unsigned j = 0; j < C->getNumOperands(); ++j) {
1499            // If the operand references a GVal or Constant, make a note of it
1500            Value* operand = C->getOperand(j);
1501            printType(operand->getType());
1502            if (GlobalValue* GV = dyn_cast<GlobalValue>(operand)) {
1503              gvs.insert(GV);
1504              if (GenerationType != GenFunction)
1505                if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV))
1506                  if (GVar->hasInitializer())
1507                    consts.insert(GVar->getInitializer());
1508            }
1509          }
1510        }
1511      }
1512    }
1513  }
1514
1515  // Print the function declarations for any functions encountered
1516  nl(Out) << "// Function Declarations"; nl(Out);
1517  for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1518       I != E; ++I) {
1519    if (Function* Fun = dyn_cast<Function>(*I)) {
1520      if (!is_inline || Fun != F)
1521        printFunctionHead(Fun);
1522    }
1523  }
1524
1525  // Print the global variable declarations for any variables encountered
1526  nl(Out) << "// Global Variable Declarations"; nl(Out);
1527  for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1528       I != E; ++I) {
1529    if (GlobalVariable* F = dyn_cast<GlobalVariable>(*I))
1530      printVariableHead(F);
1531  }
1532
1533  // Print the constants found
1534  nl(Out) << "// Constant Definitions"; nl(Out);
1535  for (SmallPtrSet<Constant*,64>::iterator I = consts.begin(),
1536         E = consts.end(); I != E; ++I) {
1537    printConstant(*I);
1538  }
1539
1540  // Process the global variables definitions now that all the constants have
1541  // been emitted. These definitions just couple the gvars with their constant
1542  // initializers.
1543  if (GenerationType != GenFunction) {
1544    nl(Out) << "// Global Variable Definitions"; nl(Out);
1545    for (SmallPtrSet<GlobalValue*,64>::iterator I = gvs.begin(), E = gvs.end();
1546         I != E; ++I) {
1547      if (GlobalVariable* GV = dyn_cast<GlobalVariable>(*I))
1548        printVariableBody(GV);
1549    }
1550  }
1551}
1552
1553void CppWriter::printFunctionHead(const Function* F) {
1554  nl(Out) << "Function* " << getCppName(F);
1555  Out << " = mod->getFunction(\"";
1556  printEscapedString(F->getName());
1557  Out << "\");";
1558  nl(Out) << "if (!" << getCppName(F) << ") {";
1559  nl(Out) << getCppName(F);
1560
1561  Out<< " = Function::Create(";
1562  nl(Out,1) << "/*Type=*/" << getCppName(F->getFunctionType()) << ",";
1563  nl(Out) << "/*Linkage=*/";
1564  printLinkageType(F->getLinkage());
1565  Out << ",";
1566  nl(Out) << "/*Name=*/\"";
1567  printEscapedString(F->getName());
1568  Out << "\", mod); " << (F->isDeclaration()? "// (external, no body)" : "");
1569  nl(Out,-1);
1570  printCppName(F);
1571  Out << "->setCallingConv(";
1572  printCallingConv(F->getCallingConv());
1573  Out << ");";
1574  nl(Out);
1575  if (F->hasSection()) {
1576    printCppName(F);
1577    Out << "->setSection(\"" << F->getSection() << "\");";
1578    nl(Out);
1579  }
1580  if (F->getAlignment()) {
1581    printCppName(F);
1582    Out << "->setAlignment(" << F->getAlignment() << ");";
1583    nl(Out);
1584  }
1585  if (F->getVisibility() != GlobalValue::DefaultVisibility) {
1586    printCppName(F);
1587    Out << "->setVisibility(";
1588    printVisibilityType(F->getVisibility());
1589    Out << ");";
1590    nl(Out);
1591  }
1592  if (F->hasGC()) {
1593    printCppName(F);
1594    Out << "->setGC(\"" << F->getGC() << "\");";
1595    nl(Out);
1596  }
1597  Out << "}";
1598  nl(Out);
1599  printAttributes(F->getAttributes(), getCppName(F));
1600  printCppName(F);
1601  Out << "->setAttributes(" << getCppName(F) << "_PAL);";
1602  nl(Out);
1603}
1604
1605void CppWriter::printFunctionBody(const Function *F) {
1606  if (F->isDeclaration())
1607    return; // external functions have no bodies.
1608
1609  // Clear the DefinedValues and ForwardRefs maps because we can't have
1610  // cross-function forward refs
1611  ForwardRefs.clear();
1612  DefinedValues.clear();
1613
1614  // Create all the argument values
1615  if (!is_inline) {
1616    if (!F->arg_empty()) {
1617      Out << "Function::arg_iterator args = " << getCppName(F)
1618          << "->arg_begin();";
1619      nl(Out);
1620    }
1621    for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1622         AI != AE; ++AI) {
1623      Out << "Value* " << getCppName(AI) << " = args++;";
1624      nl(Out);
1625      if (AI->hasName()) {
1626        Out << getCppName(AI) << "->setName(\"" << AI->getName() << "\");";
1627        nl(Out);
1628      }
1629    }
1630  }
1631
1632  // Create all the basic blocks
1633  nl(Out);
1634  for (Function::const_iterator BI = F->begin(), BE = F->end();
1635       BI != BE; ++BI) {
1636    std::string bbname(getCppName(BI));
1637    Out << "BasicBlock* " << bbname <<
1638           " = BasicBlock::Create(mod->getContext(), \"";
1639    if (BI->hasName())
1640      printEscapedString(BI->getName());
1641    Out << "\"," << getCppName(BI->getParent()) << ",0);";
1642    nl(Out);
1643  }
1644
1645  // Output all of its basic blocks... for the function
1646  for (Function::const_iterator BI = F->begin(), BE = F->end();
1647       BI != BE; ++BI) {
1648    std::string bbname(getCppName(BI));
1649    nl(Out) << "// Block " << BI->getName() << " (" << bbname << ")";
1650    nl(Out);
1651
1652    // Output all of the instructions in the basic block...
1653    for (BasicBlock::const_iterator I = BI->begin(), E = BI->end();
1654         I != E; ++I) {
1655      printInstruction(I,bbname);
1656    }
1657  }
1658
1659  // Loop over the ForwardRefs and resolve them now that all instructions
1660  // are generated.
1661  if (!ForwardRefs.empty()) {
1662    nl(Out) << "// Resolve Forward References";
1663    nl(Out);
1664  }
1665
1666  while (!ForwardRefs.empty()) {
1667    ForwardRefMap::iterator I = ForwardRefs.begin();
1668    Out << I->second << "->replaceAllUsesWith("
1669        << getCppName(I->first) << "); delete " << I->second << ";";
1670    nl(Out);
1671    ForwardRefs.erase(I);
1672  }
1673}
1674
1675void CppWriter::printInline(const std::string& fname,
1676                            const std::string& func) {
1677  const Function* F = TheModule->getFunction(func);
1678  if (!F) {
1679    error(std::string("Function '") + func + "' not found in input module");
1680    return;
1681  }
1682  if (F->isDeclaration()) {
1683    error(std::string("Function '") + func + "' is external!");
1684    return;
1685  }
1686  nl(Out) << "BasicBlock* " << fname << "(Module* mod, Function *"
1687          << getCppName(F);
1688  unsigned arg_count = 1;
1689  for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1690       AI != AE; ++AI) {
1691    Out << ", Value* arg_" << arg_count;
1692  }
1693  Out << ") {";
1694  nl(Out);
1695  is_inline = true;
1696  printFunctionUses(F);
1697  printFunctionBody(F);
1698  is_inline = false;
1699  Out << "return " << getCppName(F->begin()) << ";";
1700  nl(Out) << "}";
1701  nl(Out);
1702}
1703
1704void CppWriter::printModuleBody() {
1705  // Print out all the type definitions
1706  nl(Out) << "// Type Definitions"; nl(Out);
1707  printTypes(TheModule);
1708
1709  // Functions can call each other and global variables can reference them so
1710  // define all the functions first before emitting their function bodies.
1711  nl(Out) << "// Function Declarations"; nl(Out);
1712  for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1713       I != E; ++I)
1714    printFunctionHead(I);
1715
1716  // Process the global variables declarations. We can't initialze them until
1717  // after the constants are printed so just print a header for each global
1718  nl(Out) << "// Global Variable Declarations\n"; nl(Out);
1719  for (Module::const_global_iterator I = TheModule->global_begin(),
1720         E = TheModule->global_end(); I != E; ++I) {
1721    printVariableHead(I);
1722  }
1723
1724  // Print out all the constants definitions. Constants don't recurse except
1725  // through GlobalValues. All GlobalValues have been declared at this point
1726  // so we can proceed to generate the constants.
1727  nl(Out) << "// Constant Definitions"; nl(Out);
1728  printConstants(TheModule);
1729
1730  // Process the global variables definitions now that all the constants have
1731  // been emitted. These definitions just couple the gvars with their constant
1732  // initializers.
1733  nl(Out) << "// Global Variable Definitions"; nl(Out);
1734  for (Module::const_global_iterator I = TheModule->global_begin(),
1735         E = TheModule->global_end(); I != E; ++I) {
1736    printVariableBody(I);
1737  }
1738
1739  // Finally, we can safely put out all of the function bodies.
1740  nl(Out) << "// Function Definitions"; nl(Out);
1741  for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1742       I != E; ++I) {
1743    if (!I->isDeclaration()) {
1744      nl(Out) << "// Function: " << I->getName() << " (" << getCppName(I)
1745              << ")";
1746      nl(Out) << "{";
1747      nl(Out,1);
1748      printFunctionBody(I);
1749      nl(Out,-1) << "}";
1750      nl(Out);
1751    }
1752  }
1753}
1754
1755void CppWriter::printProgram(const std::string& fname,
1756                             const std::string& mName) {
1757  Out << "#include <llvm/LLVMContext.h>\n";
1758  Out << "#include <llvm/Module.h>\n";
1759  Out << "#include <llvm/DerivedTypes.h>\n";
1760  Out << "#include <llvm/Constants.h>\n";
1761  Out << "#include <llvm/GlobalVariable.h>\n";
1762  Out << "#include <llvm/Function.h>\n";
1763  Out << "#include <llvm/CallingConv.h>\n";
1764  Out << "#include <llvm/BasicBlock.h>\n";
1765  Out << "#include <llvm/Instructions.h>\n";
1766  Out << "#include <llvm/InlineAsm.h>\n";
1767  Out << "#include <llvm/Support/FormattedStream.h>\n";
1768  Out << "#include <llvm/Support/MathExtras.h>\n";
1769  Out << "#include <llvm/Pass.h>\n";
1770  Out << "#include <llvm/PassManager.h>\n";
1771  Out << "#include <llvm/ADT/SmallVector.h>\n";
1772  Out << "#include <llvm/Analysis/Verifier.h>\n";
1773  Out << "#include <llvm/Assembly/PrintModulePass.h>\n";
1774  Out << "#include <algorithm>\n";
1775  Out << "using namespace llvm;\n\n";
1776  Out << "Module* " << fname << "();\n\n";
1777  Out << "int main(int argc, char**argv) {\n";
1778  Out << "  Module* Mod = " << fname << "();\n";
1779  Out << "  verifyModule(*Mod, PrintMessageAction);\n";
1780  Out << "  PassManager PM;\n";
1781  Out << "  PM.add(createPrintModulePass(&outs()));\n";
1782  Out << "  PM.run(*Mod);\n";
1783  Out << "  return 0;\n";
1784  Out << "}\n\n";
1785  printModule(fname,mName);
1786}
1787
1788void CppWriter::printModule(const std::string& fname,
1789                            const std::string& mName) {
1790  nl(Out) << "Module* " << fname << "() {";
1791  nl(Out,1) << "// Module Construction";
1792  nl(Out) << "Module* mod = new Module(\"";
1793  printEscapedString(mName);
1794  Out << "\", getGlobalContext());";
1795  if (!TheModule->getTargetTriple().empty()) {
1796    nl(Out) << "mod->setDataLayout(\"" << TheModule->getDataLayout() << "\");";
1797  }
1798  if (!TheModule->getTargetTriple().empty()) {
1799    nl(Out) << "mod->setTargetTriple(\"" << TheModule->getTargetTriple()
1800            << "\");";
1801  }
1802
1803  if (!TheModule->getModuleInlineAsm().empty()) {
1804    nl(Out) << "mod->setModuleInlineAsm(\"";
1805    printEscapedString(TheModule->getModuleInlineAsm());
1806    Out << "\");";
1807  }
1808  nl(Out);
1809
1810  // Loop over the dependent libraries and emit them.
1811  Module::lib_iterator LI = TheModule->lib_begin();
1812  Module::lib_iterator LE = TheModule->lib_end();
1813  while (LI != LE) {
1814    Out << "mod->addLibrary(\"" << *LI << "\");";
1815    nl(Out);
1816    ++LI;
1817  }
1818  printModuleBody();
1819  nl(Out) << "return mod;";
1820  nl(Out,-1) << "}";
1821  nl(Out);
1822}
1823
1824void CppWriter::printContents(const std::string& fname,
1825                              const std::string& mName) {
1826  Out << "\nModule* " << fname << "(Module *mod) {\n";
1827  Out << "\nmod->setModuleIdentifier(\"";
1828  printEscapedString(mName);
1829  Out << "\");\n";
1830  printModuleBody();
1831  Out << "\nreturn mod;\n";
1832  Out << "\n}\n";
1833}
1834
1835void CppWriter::printFunction(const std::string& fname,
1836                              const std::string& funcName) {
1837  const Function* F = TheModule->getFunction(funcName);
1838  if (!F) {
1839    error(std::string("Function '") + funcName + "' not found in input module");
1840    return;
1841  }
1842  Out << "\nFunction* " << fname << "(Module *mod) {\n";
1843  printFunctionUses(F);
1844  printFunctionHead(F);
1845  printFunctionBody(F);
1846  Out << "return " << getCppName(F) << ";\n";
1847  Out << "}\n";
1848}
1849
1850void CppWriter::printFunctions() {
1851  const Module::FunctionListType &funcs = TheModule->getFunctionList();
1852  Module::const_iterator I  = funcs.begin();
1853  Module::const_iterator IE = funcs.end();
1854
1855  for (; I != IE; ++I) {
1856    const Function &func = *I;
1857    if (!func.isDeclaration()) {
1858      std::string name("define_");
1859      name += func.getName();
1860      printFunction(name, func.getName());
1861    }
1862  }
1863}
1864
1865void CppWriter::printVariable(const std::string& fname,
1866                              const std::string& varName) {
1867  const GlobalVariable* GV = TheModule->getNamedGlobal(varName);
1868
1869  if (!GV) {
1870    error(std::string("Variable '") + varName + "' not found in input module");
1871    return;
1872  }
1873  Out << "\nGlobalVariable* " << fname << "(Module *mod) {\n";
1874  printVariableUses(GV);
1875  printVariableHead(GV);
1876  printVariableBody(GV);
1877  Out << "return " << getCppName(GV) << ";\n";
1878  Out << "}\n";
1879}
1880
1881void CppWriter::printType(const std::string &fname,
1882                          const std::string &typeName) {
1883  Type* Ty = TheModule->getTypeByName(typeName);
1884  if (!Ty) {
1885    error(std::string("Type '") + typeName + "' not found in input module");
1886    return;
1887  }
1888  Out << "\nType* " << fname << "(Module *mod) {\n";
1889  printType(Ty);
1890  Out << "return " << getCppName(Ty) << ";\n";
1891  Out << "}\n";
1892}
1893
1894bool CppWriter::runOnModule(Module &M) {
1895  TheModule = &M;
1896
1897  // Emit a header
1898  Out << "// Generated by llvm2cpp - DO NOT MODIFY!\n\n";
1899
1900  // Get the name of the function we're supposed to generate
1901  std::string fname = FuncName.getValue();
1902
1903  // Get the name of the thing we are to generate
1904  std::string tgtname = NameToGenerate.getValue();
1905  if (GenerationType == GenModule ||
1906      GenerationType == GenContents ||
1907      GenerationType == GenProgram ||
1908      GenerationType == GenFunctions) {
1909    if (tgtname == "!bad!") {
1910      if (M.getModuleIdentifier() == "-")
1911        tgtname = "<stdin>";
1912      else
1913        tgtname = M.getModuleIdentifier();
1914    }
1915  } else if (tgtname == "!bad!")
1916    error("You must use the -for option with -gen-{function,variable,type}");
1917
1918  switch (WhatToGenerate(GenerationType)) {
1919   case GenProgram:
1920    if (fname.empty())
1921      fname = "makeLLVMModule";
1922    printProgram(fname,tgtname);
1923    break;
1924   case GenModule:
1925    if (fname.empty())
1926      fname = "makeLLVMModule";
1927    printModule(fname,tgtname);
1928    break;
1929   case GenContents:
1930    if (fname.empty())
1931      fname = "makeLLVMModuleContents";
1932    printContents(fname,tgtname);
1933    break;
1934   case GenFunction:
1935    if (fname.empty())
1936      fname = "makeLLVMFunction";
1937    printFunction(fname,tgtname);
1938    break;
1939   case GenFunctions:
1940    printFunctions();
1941    break;
1942   case GenInline:
1943    if (fname.empty())
1944      fname = "makeLLVMInline";
1945    printInline(fname,tgtname);
1946    break;
1947   case GenVariable:
1948    if (fname.empty())
1949      fname = "makeLLVMVariable";
1950    printVariable(fname,tgtname);
1951    break;
1952   case GenType:
1953    if (fname.empty())
1954      fname = "makeLLVMType";
1955    printType(fname,tgtname);
1956    break;
1957   default:
1958    error("Invalid generation option");
1959  }
1960
1961  return false;
1962}
1963
1964char CppWriter::ID = 0;
1965
1966//===----------------------------------------------------------------------===//
1967//                       External Interface declaration
1968//===----------------------------------------------------------------------===//
1969
1970bool CPPTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
1971                                           formatted_raw_ostream &o,
1972                                           CodeGenFileType FileType,
1973                                           CodeGenOpt::Level OptLevel,
1974                                           bool DisableVerify) {
1975  if (FileType != TargetMachine::CGFT_AssemblyFile) return true;
1976  PM.add(new CppWriter(o));
1977  return false;
1978}
1979