1 //===-- CppWriter.cpp - Printing LLVM IR as a C++ Source File -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Reid Spencer and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/CallingConv.h"
16 #include "llvm/Constants.h"
17 #include "llvm/DerivedTypes.h"
18 #include "llvm/InlineAsm.h"
19 #include "llvm/Instruction.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/ParameterAttributes.h"
22 #include "llvm/Module.h"
23 #include "llvm/TypeSymbolTable.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/STLExtras.h"
26 #include "llvm/Support/CommandLine.h"
27 #include "llvm/Support/CFG.h"
28 #include "llvm/Support/ManagedStatic.h"
29 #include "llvm/Support/MathExtras.h"
30 #include "llvm/Config/config.h"
37 static cl::opt<std::string>
38 FuncName("funcname", cl::desc("Specify the name of the generated function"),
39 cl::value_desc("function name"));
51 static cl::opt<WhatToGenerate> GenerationType(cl::Optional,
52 cl::desc("Choose what kind of output to generate"),
55 clEnumValN(GenProgram, "gen-program", "Generate a complete program"),
56 clEnumValN(GenModule, "gen-module", "Generate a module definition"),
57 clEnumValN(GenContents,"gen-contents", "Generate contents of a module"),
58 clEnumValN(GenFunction,"gen-function", "Generate a function definition"),
59 clEnumValN(GenInline, "gen-inline", "Generate an inline function"),
60 clEnumValN(GenVariable,"gen-variable", "Generate a variable definition"),
61 clEnumValN(GenType, "gen-type", "Generate a type definition"),
66 static cl::opt<std::string> NameToGenerate("for", cl::Optional,
67 cl::desc("Specify the name of the thing to generate"),
71 typedef std::vector<const Type*> TypeList;
72 typedef std::map<const Type*,std::string> TypeMap;
73 typedef std::map<const Value*,std::string> ValueMap;
74 typedef std::set<std::string> NameSet;
75 typedef std::set<const Type*> TypeSet;
76 typedef std::set<const Value*> ValueSet;
77 typedef std::map<const Value*,std::string> ForwardRefMap;
82 const Module *TheModule;
86 TypeMap UnresolvedTypes;
90 ValueSet DefinedValues;
91 ForwardRefMap ForwardRefs;
95 inline CppWriter(std::ostream &o, const Module *M, const char* pn="llvm2cpp")
96 : progname(pn), Out(o), TheModule(M), uniqueNum(0), TypeNames(),
97 ValueNames(), UnresolvedTypes(), TypeStack(), is_inline(false) { }
99 const Module* getModule() { return TheModule; }
101 void printProgram(const std::string& fname, const std::string& modName );
102 void printModule(const std::string& fname, const std::string& modName );
103 void printContents(const std::string& fname, const std::string& modName );
104 void printFunction(const std::string& fname, const std::string& funcName );
105 void printInline(const std::string& fname, const std::string& funcName );
106 void printVariable(const std::string& fname, const std::string& varName );
107 void printType(const std::string& fname, const std::string& typeName );
109 void error(const std::string& msg);
112 void printLinkageType(GlobalValue::LinkageTypes LT);
113 void printCallingConv(unsigned cc);
114 void printEscapedString(const std::string& str);
115 void printCFP(const ConstantFP* CFP);
117 std::string getCppName(const Type* val);
118 inline void printCppName(const Type* val);
120 std::string getCppName(const Value* val);
121 inline void printCppName(const Value* val);
123 bool printTypeInternal(const Type* Ty);
124 inline void printType(const Type* Ty);
125 void printTypes(const Module* M);
127 void printConstant(const Constant *CPV);
128 void printConstants(const Module* M);
130 void printVariableUses(const GlobalVariable *GV);
131 void printVariableHead(const GlobalVariable *GV);
132 void printVariableBody(const GlobalVariable *GV);
134 void printFunctionUses(const Function *F);
135 void printFunctionHead(const Function *F);
136 void printFunctionBody(const Function *F);
137 void printInstruction(const Instruction *I, const std::string& bbname);
138 std::string getOpName(Value*);
140 void printModuleBody();
144 static unsigned indent_level = 0;
145 inline std::ostream& nl(std::ostream& Out, int delta = 0) {
147 if (delta >= 0 || indent_level >= unsigned(-delta))
148 indent_level += delta;
149 for (unsigned i = 0; i < indent_level; ++i)
154 inline void in() { indent_level++; }
155 inline void out() { if (indent_level >0) indent_level--; }
158 sanitize(std::string& str) {
159 for (size_t i = 0; i < str.length(); ++i)
160 if (!isalnum(str[i]) && str[i] != '_')
165 getTypePrefix(const Type* Ty ) {
166 switch (Ty->getTypeID()) {
167 case Type::VoidTyID: return "void_";
168 case Type::IntegerTyID:
169 return std::string("int") + utostr(cast<IntegerType>(Ty)->getBitWidth()) +
171 case Type::FloatTyID: return "float_";
172 case Type::DoubleTyID: return "double_";
173 case Type::LabelTyID: return "label_";
174 case Type::FunctionTyID: return "func_";
175 case Type::StructTyID: return "struct_";
176 case Type::ArrayTyID: return "array_";
177 case Type::PointerTyID: return "ptr_";
178 case Type::VectorTyID: return "packed_";
179 case Type::OpaqueTyID: return "opaque_";
180 default: return "other_";
185 // Looks up the type in the symbol table and returns a pointer to its name or
186 // a null pointer if it wasn't found. Note that this isn't the same as the
187 // Mode::getTypeName function which will return an empty string, not a null
188 // pointer if the name is not found.
189 inline const std::string*
190 findTypeName(const TypeSymbolTable& ST, const Type* Ty)
192 TypeSymbolTable::const_iterator TI = ST.begin();
193 TypeSymbolTable::const_iterator TE = ST.end();
194 for (;TI != TE; ++TI)
195 if (TI->second == Ty)
201 CppWriter::error(const std::string& msg) {
202 std::cerr << progname << ": " << msg << "\n";
206 // printCFP - Print a floating point constant .. very carefully :)
207 // This makes sure that conversion to/from floating yields the same binary
208 // result so that we don't lose precision.
210 CppWriter::printCFP(const ConstantFP *CFP) {
211 Out << "ConstantFP::get(";
212 if (CFP->getType() == Type::DoubleTy)
213 Out << "Type::DoubleTy, ";
215 Out << "Type::FloatTy, ";
218 sprintf(Buffer, "%A", CFP->getValue());
219 if ((!strncmp(Buffer, "0x", 2) ||
220 !strncmp(Buffer, "-0x", 3) ||
221 !strncmp(Buffer, "+0x", 3)) &&
222 (atof(Buffer) == CFP->getValue()))
223 if (CFP->getType() == Type::DoubleTy)
224 Out << "BitsToDouble(" << Buffer << ")";
226 Out << "BitsToFloat(" << Buffer << ")";
229 std::string StrVal = ftostr(CFP->getValue());
231 while (StrVal[0] == ' ')
232 StrVal.erase(StrVal.begin());
234 // Check to make sure that the stringized number is not some string like
235 // "Inf" or NaN. Check that the string matches the "[-+]?[0-9]" regex.
236 if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
237 ((StrVal[0] == '-' || StrVal[0] == '+') &&
238 (StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
239 (atof(StrVal.c_str()) == CFP->getValue()))
240 if (CFP->getType() == Type::DoubleTy)
244 else if (CFP->getType() == Type::DoubleTy)
245 Out << "BitsToDouble(0x" << std::hex << DoubleToBits(CFP->getValue())
246 << std::dec << "ULL) /* " << StrVal << " */";
248 Out << "BitsToFloat(0x" << std::hex << FloatToBits(CFP->getValue())
249 << std::dec << "U) /* " << StrVal << " */";
257 CppWriter::printCallingConv(unsigned cc){
258 // Print the calling convention.
260 case CallingConv::C: Out << "CallingConv::C"; break;
261 case CallingConv::Fast: Out << "CallingConv::Fast"; break;
262 case CallingConv::Cold: Out << "CallingConv::Cold"; break;
263 case CallingConv::FirstTargetCC: Out << "CallingConv::FirstTargetCC"; break;
264 default: Out << cc; break;
269 CppWriter::printLinkageType(GlobalValue::LinkageTypes LT) {
271 case GlobalValue::InternalLinkage:
272 Out << "GlobalValue::InternalLinkage"; break;
273 case GlobalValue::LinkOnceLinkage:
274 Out << "GlobalValue::LinkOnceLinkage "; break;
275 case GlobalValue::WeakLinkage:
276 Out << "GlobalValue::WeakLinkage"; break;
277 case GlobalValue::AppendingLinkage:
278 Out << "GlobalValue::AppendingLinkage"; break;
279 case GlobalValue::ExternalLinkage:
280 Out << "GlobalValue::ExternalLinkage"; break;
281 case GlobalValue::DLLImportLinkage:
282 Out << "GlobalValue::DllImportLinkage"; break;
283 case GlobalValue::DLLExportLinkage:
284 Out << "GlobalValue::DllExportLinkage"; break;
285 case GlobalValue::ExternalWeakLinkage:
286 Out << "GlobalValue::ExternalWeakLinkage"; break;
287 case GlobalValue::GhostLinkage:
288 Out << "GlobalValue::GhostLinkage"; break;
292 // printEscapedString - Print each character of the specified string, escaping
293 // it if it is not printable or if it is an escape char.
295 CppWriter::printEscapedString(const std::string &Str) {
296 for (unsigned i = 0, e = Str.size(); i != e; ++i) {
297 unsigned char C = Str[i];
298 if (isprint(C) && C != '"' && C != '\\') {
302 << (char) ((C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
303 << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
309 CppWriter::getCppName(const Type* Ty)
311 // First, handle the primitive types .. easy
312 if (Ty->isPrimitiveType() || Ty->isInteger()) {
313 switch (Ty->getTypeID()) {
314 case Type::VoidTyID: return "Type::VoidTy";
315 case Type::IntegerTyID: {
316 unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
317 return "IntegerType::get(" + utostr(BitWidth) + ")";
319 case Type::FloatTyID: return "Type::FloatTy";
320 case Type::DoubleTyID: return "Type::DoubleTy";
321 case Type::LabelTyID: return "Type::LabelTy";
323 error("Invalid primitive type");
326 return "Type::VoidTy"; // shouldn't be returned, but make it sensible
329 // Now, see if we've seen the type before and return that
330 TypeMap::iterator I = TypeNames.find(Ty);
331 if (I != TypeNames.end())
334 // Okay, let's build a new name for this type. Start with a prefix
335 const char* prefix = 0;
336 switch (Ty->getTypeID()) {
337 case Type::FunctionTyID: prefix = "FuncTy_"; break;
338 case Type::StructTyID: prefix = "StructTy_"; break;
339 case Type::ArrayTyID: prefix = "ArrayTy_"; break;
340 case Type::PointerTyID: prefix = "PointerTy_"; break;
341 case Type::OpaqueTyID: prefix = "OpaqueTy_"; break;
342 case Type::VectorTyID: prefix = "VectorTy_"; break;
343 default: prefix = "OtherTy_"; break; // prevent breakage
346 // See if the type has a name in the symboltable and build accordingly
347 const std::string* tName = findTypeName(TheModule->getTypeSymbolTable(), Ty);
350 name = std::string(prefix) + *tName;
352 name = std::string(prefix) + utostr(uniqueNum++);
356 return TypeNames[Ty] = name;
360 CppWriter::printCppName(const Type* Ty)
362 printEscapedString(getCppName(Ty));
366 CppWriter::getCppName(const Value* val) {
368 ValueMap::iterator I = ValueNames.find(val);
369 if (I != ValueNames.end() && I->first == val)
372 if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(val)) {
373 name = std::string("gvar_") +
374 getTypePrefix(GV->getType()->getElementType());
375 } else if (isa<Function>(val)) {
376 name = std::string("func_");
377 } else if (const Constant* C = dyn_cast<Constant>(val)) {
378 name = std::string("const_") + getTypePrefix(C->getType());
379 } else if (const Argument* Arg = dyn_cast<Argument>(val)) {
381 unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
382 Function::const_arg_iterator(Arg)) + 1;
383 name = std::string("arg_") + utostr(argNum);
384 NameSet::iterator NI = UsedNames.find(name);
385 if (NI != UsedNames.end())
386 name += std::string("_") + utostr(uniqueNum++);
387 UsedNames.insert(name);
388 return ValueNames[val] = name;
390 name = getTypePrefix(val->getType());
393 name = getTypePrefix(val->getType());
395 name += (val->hasName() ? val->getName() : utostr(uniqueNum++));
397 NameSet::iterator NI = UsedNames.find(name);
398 if (NI != UsedNames.end())
399 name += std::string("_") + utostr(uniqueNum++);
400 UsedNames.insert(name);
401 return ValueNames[val] = name;
405 CppWriter::printCppName(const Value* val) {
406 printEscapedString(getCppName(val));
410 CppWriter::printTypeInternal(const Type* Ty) {
411 // We don't print definitions for primitive types
412 if (Ty->isPrimitiveType() || Ty->isInteger())
415 // If we already defined this type, we don't need to define it again.
416 if (DefinedTypes.find(Ty) != DefinedTypes.end())
419 // Everything below needs the name for the type so get it now.
420 std::string typeName(getCppName(Ty));
422 // Search the type stack for recursion. If we find it, then generate this
423 // as an OpaqueType, but make sure not to do this multiple times because
424 // the type could appear in multiple places on the stack. Once the opaque
425 // definition is issued, it must not be re-issued. Consequently we have to
426 // check the UnresolvedTypes list as well.
427 TypeList::const_iterator TI = std::find(TypeStack.begin(),TypeStack.end(),Ty);
428 if (TI != TypeStack.end()) {
429 TypeMap::const_iterator I = UnresolvedTypes.find(Ty);
430 if (I == UnresolvedTypes.end()) {
431 Out << "PATypeHolder " << typeName << "_fwd = OpaqueType::get();";
433 UnresolvedTypes[Ty] = typeName;
438 // We're going to print a derived type which, by definition, contains other
439 // types. So, push this one we're printing onto the type stack to assist with
440 // recursive definitions.
441 TypeStack.push_back(Ty);
443 // Print the type definition
444 switch (Ty->getTypeID()) {
445 case Type::FunctionTyID: {
446 const FunctionType* FT = cast<FunctionType>(Ty);
447 Out << "std::vector<const Type*>" << typeName << "_args;";
449 FunctionType::param_iterator PI = FT->param_begin();
450 FunctionType::param_iterator PE = FT->param_end();
451 for (; PI != PE; ++PI) {
452 const Type* argTy = static_cast<const Type*>(*PI);
453 bool isForward = printTypeInternal(argTy);
454 std::string argName(getCppName(argTy));
455 Out << typeName << "_args.push_back(" << argName;
461 const ParamAttrsList *PAL = FT->getParamAttrs();
462 Out << "ParamAttrsList *" << typeName << "_PAL = 0;";
464 if (PAL && !PAL->empty()) {
465 Out << typeName << "_PAL = new ParamAttrsList();";
467 for (unsigned i = 0; i < PAL->size(); ++i) {
468 uint16_t index = PAL->getParamIndex(i);
469 uint16_t attrs = PAL->getParamAttrs(index);
470 Out << typeName << "_PAL->addAttributes(" << index << ", 0";
471 if (attrs & ParamAttr::SExt)
472 Out << " | ParamAttr::SExt";
473 if (attrs & ParamAttr::ZExt)
474 Out << " | ParamAttr::ZExt";
475 if (attrs & ParamAttr::StructRet)
476 Out << " | ParamAttr::StructRet";
477 if (attrs & ParamAttr::InReg)
478 Out << " | ParamAttr::InReg";
479 if (attrs & ParamAttr::NoReturn)
480 Out << " | ParamAttr::NoReturn";
481 if (attrs & ParamAttr::NoUnwind)
482 Out << " | ParamAttr::NoUnwind";
487 bool isForward = printTypeInternal(FT->getReturnType());
488 std::string retTypeName(getCppName(FT->getReturnType()));
489 Out << "FunctionType* " << typeName << " = FunctionType::get(";
490 in(); nl(Out) << "/*Result=*/" << retTypeName;
494 nl(Out) << "/*Params=*/" << typeName << "_args,";
495 nl(Out) << "/*isVarArg=*/" << (FT->isVarArg() ? "true," : "false,") ;
496 nl(Out) << "/*ParamAttrs=*/" << typeName << "_PAL" << ");";
501 case Type::StructTyID: {
502 const StructType* ST = cast<StructType>(Ty);
503 Out << "std::vector<const Type*>" << typeName << "_fields;";
505 StructType::element_iterator EI = ST->element_begin();
506 StructType::element_iterator EE = ST->element_end();
507 for (; EI != EE; ++EI) {
508 const Type* fieldTy = static_cast<const Type*>(*EI);
509 bool isForward = printTypeInternal(fieldTy);
510 std::string fieldName(getCppName(fieldTy));
511 Out << typeName << "_fields.push_back(" << fieldName;
517 Out << "StructType* " << typeName << " = StructType::get("
518 << typeName << "_fields, /*isPacked=*/"
519 << (ST->isPacked() ? "true" : "false") << ");";
523 case Type::ArrayTyID: {
524 const ArrayType* AT = cast<ArrayType>(Ty);
525 const Type* ET = AT->getElementType();
526 bool isForward = printTypeInternal(ET);
527 std::string elemName(getCppName(ET));
528 Out << "ArrayType* " << typeName << " = ArrayType::get("
529 << elemName << (isForward ? "_fwd" : "")
530 << ", " << utostr(AT->getNumElements()) << ");";
534 case Type::PointerTyID: {
535 const PointerType* PT = cast<PointerType>(Ty);
536 const Type* ET = PT->getElementType();
537 bool isForward = printTypeInternal(ET);
538 std::string elemName(getCppName(ET));
539 Out << "PointerType* " << typeName << " = PointerType::get("
540 << elemName << (isForward ? "_fwd" : "") << ");";
544 case Type::VectorTyID: {
545 const VectorType* PT = cast<VectorType>(Ty);
546 const Type* ET = PT->getElementType();
547 bool isForward = printTypeInternal(ET);
548 std::string elemName(getCppName(ET));
549 Out << "VectorType* " << typeName << " = VectorType::get("
550 << elemName << (isForward ? "_fwd" : "")
551 << ", " << utostr(PT->getNumElements()) << ");";
555 case Type::OpaqueTyID: {
556 Out << "OpaqueType* " << typeName << " = OpaqueType::get();";
561 error("Invalid TypeID");
564 // If the type had a name, make sure we recreate it.
565 const std::string* progTypeName =
566 findTypeName(TheModule->getTypeSymbolTable(),Ty);
568 Out << "mod->addTypeName(\"" << *progTypeName << "\", "
573 // Pop us off the type stack
574 TypeStack.pop_back();
576 // Indicate that this type is now defined.
577 DefinedTypes.insert(Ty);
579 // Early resolve as many unresolved types as possible. Search the unresolved
580 // types map for the type we just printed. Now that its definition is complete
581 // we can resolve any previous references to it. This prevents a cascade of
583 TypeMap::iterator I = UnresolvedTypes.find(Ty);
584 if (I != UnresolvedTypes.end()) {
585 Out << "cast<OpaqueType>(" << I->second
586 << "_fwd.get())->refineAbstractTypeTo(" << I->second << ");";
588 Out << I->second << " = cast<";
589 switch (Ty->getTypeID()) {
590 case Type::FunctionTyID: Out << "FunctionType"; break;
591 case Type::ArrayTyID: Out << "ArrayType"; break;
592 case Type::StructTyID: Out << "StructType"; break;
593 case Type::VectorTyID: Out << "VectorType"; break;
594 case Type::PointerTyID: Out << "PointerType"; break;
595 case Type::OpaqueTyID: Out << "OpaqueType"; break;
596 default: Out << "NoSuchDerivedType"; break;
598 Out << ">(" << I->second << "_fwd.get());";
600 UnresolvedTypes.erase(I);
603 // Finally, separate the type definition from other with a newline.
606 // We weren't a recursive type
610 // Prints a type definition. Returns true if it could not resolve all the types
611 // in the definition but had to use a forward reference.
613 CppWriter::printType(const Type* Ty) {
614 assert(TypeStack.empty());
616 printTypeInternal(Ty);
617 assert(TypeStack.empty());
621 CppWriter::printTypes(const Module* M) {
623 // Walk the symbol table and print out all its types
624 const TypeSymbolTable& symtab = M->getTypeSymbolTable();
625 for (TypeSymbolTable::const_iterator TI = symtab.begin(), TE = symtab.end();
628 // For primitive types and types already defined, just add a name
629 TypeMap::const_iterator TNI = TypeNames.find(TI->second);
630 if (TI->second->isInteger() || TI->second->isPrimitiveType() ||
631 TNI != TypeNames.end()) {
632 Out << "mod->addTypeName(\"";
633 printEscapedString(TI->first);
634 Out << "\", " << getCppName(TI->second) << ");";
636 // For everything else, define the type
638 printType(TI->second);
642 // Add all of the global variables to the value table...
643 for (Module::const_global_iterator I = TheModule->global_begin(),
644 E = TheModule->global_end(); I != E; ++I) {
645 if (I->hasInitializer())
646 printType(I->getInitializer()->getType());
647 printType(I->getType());
650 // Add all the functions to the table
651 for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
653 printType(FI->getReturnType());
654 printType(FI->getFunctionType());
655 // Add all the function arguments
656 for(Function::const_arg_iterator AI = FI->arg_begin(),
657 AE = FI->arg_end(); AI != AE; ++AI) {
658 printType(AI->getType());
661 // Add all of the basic blocks and instructions
662 for (Function::const_iterator BB = FI->begin(),
663 E = FI->end(); BB != E; ++BB) {
664 printType(BB->getType());
665 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
667 printType(I->getType());
668 for (unsigned i = 0; i < I->getNumOperands(); ++i)
669 printType(I->getOperand(i)->getType());
676 // printConstant - Print out a constant pool entry...
677 void CppWriter::printConstant(const Constant *CV) {
678 // First, if the constant is actually a GlobalValue (variable or function) or
679 // its already in the constant list then we've printed it already and we can
681 if (isa<GlobalValue>(CV) || ValueNames.find(CV) != ValueNames.end())
684 std::string constName(getCppName(CV));
685 std::string typeName(getCppName(CV->getType()));
686 if (CV->isNullValue()) {
687 Out << "Constant* " << constName << " = Constant::getNullValue("
692 if (isa<GlobalValue>(CV)) {
693 // Skip variables and functions, we emit them elsewhere
696 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
697 Out << "ConstantInt* " << constName << " = ConstantInt::get("
698 << "APInt(cast<IntegerType>(" << typeName << ")->getBitWidth(),"
699 << " \"" << CI->getValue().toStringSigned(10) << "\", 10));";
700 } else if (isa<ConstantAggregateZero>(CV)) {
701 Out << "ConstantAggregateZero* " << constName
702 << " = ConstantAggregateZero::get(" << typeName << ");";
703 } else if (isa<ConstantPointerNull>(CV)) {
704 Out << "ConstantPointerNull* " << constName
705 << " = ConstanPointerNull::get(" << typeName << ");";
706 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
707 Out << "ConstantFP* " << constName << " = ";
710 } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
711 if (CA->isString() && CA->getType()->getElementType() == Type::Int8Ty) {
712 Out << "Constant* " << constName << " = ConstantArray::get(\"";
713 printEscapedString(CA->getAsString());
714 // Determine if we want null termination or not.
715 if (CA->getType()->getNumElements() <= CA->getAsString().length())
716 Out << "\", false";// No null terminator
718 Out << "\", true"; // Indicate that the null terminator should be added.
721 Out << "std::vector<Constant*> " << constName << "_elems;";
723 unsigned N = CA->getNumOperands();
724 for (unsigned i = 0; i < N; ++i) {
725 printConstant(CA->getOperand(i)); // recurse to print operands
726 Out << constName << "_elems.push_back("
727 << getCppName(CA->getOperand(i)) << ");";
730 Out << "Constant* " << constName << " = ConstantArray::get("
731 << typeName << ", " << constName << "_elems);";
733 } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
734 Out << "std::vector<Constant*> " << constName << "_fields;";
736 unsigned N = CS->getNumOperands();
737 for (unsigned i = 0; i < N; i++) {
738 printConstant(CS->getOperand(i));
739 Out << constName << "_fields.push_back("
740 << getCppName(CS->getOperand(i)) << ");";
743 Out << "Constant* " << constName << " = ConstantStruct::get("
744 << typeName << ", " << constName << "_fields);";
745 } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
746 Out << "std::vector<Constant*> " << constName << "_elems;";
748 unsigned N = CP->getNumOperands();
749 for (unsigned i = 0; i < N; ++i) {
750 printConstant(CP->getOperand(i));
751 Out << constName << "_elems.push_back("
752 << getCppName(CP->getOperand(i)) << ");";
755 Out << "Constant* " << constName << " = ConstantVector::get("
756 << typeName << ", " << constName << "_elems);";
757 } else if (isa<UndefValue>(CV)) {
758 Out << "UndefValue* " << constName << " = UndefValue::get("
760 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
761 if (CE->getOpcode() == Instruction::GetElementPtr) {
762 Out << "std::vector<Constant*> " << constName << "_indices;";
764 printConstant(CE->getOperand(0));
765 for (unsigned i = 1; i < CE->getNumOperands(); ++i ) {
766 printConstant(CE->getOperand(i));
767 Out << constName << "_indices.push_back("
768 << getCppName(CE->getOperand(i)) << ");";
771 Out << "Constant* " << constName
772 << " = ConstantExpr::getGetElementPtr("
773 << getCppName(CE->getOperand(0)) << ", "
774 << "&" << constName << "_indices[0], " << CE->getNumOperands() - 1
776 } else if (CE->isCast()) {
777 printConstant(CE->getOperand(0));
778 Out << "Constant* " << constName << " = ConstantExpr::getCast(";
779 switch (CE->getOpcode()) {
780 default: assert(0 && "Invalid cast opcode");
781 case Instruction::Trunc: Out << "Instruction::Trunc"; break;
782 case Instruction::ZExt: Out << "Instruction::ZExt"; break;
783 case Instruction::SExt: Out << "Instruction::SExt"; break;
784 case Instruction::FPTrunc: Out << "Instruction::FPTrunc"; break;
785 case Instruction::FPExt: Out << "Instruction::FPExt"; break;
786 case Instruction::FPToUI: Out << "Instruction::FPToUI"; break;
787 case Instruction::FPToSI: Out << "Instruction::FPToSI"; break;
788 case Instruction::UIToFP: Out << "Instruction::UIToFP"; break;
789 case Instruction::SIToFP: Out << "Instruction::SIToFP"; break;
790 case Instruction::PtrToInt: Out << "Instruction::PtrToInt"; break;
791 case Instruction::IntToPtr: Out << "Instruction::IntToPtr"; break;
792 case Instruction::BitCast: Out << "Instruction::BitCast"; break;
794 Out << ", " << getCppName(CE->getOperand(0)) << ", "
795 << getCppName(CE->getType()) << ");";
797 unsigned N = CE->getNumOperands();
798 for (unsigned i = 0; i < N; ++i ) {
799 printConstant(CE->getOperand(i));
801 Out << "Constant* " << constName << " = ConstantExpr::";
802 switch (CE->getOpcode()) {
803 case Instruction::Add: Out << "getAdd("; break;
804 case Instruction::Sub: Out << "getSub("; break;
805 case Instruction::Mul: Out << "getMul("; break;
806 case Instruction::UDiv: Out << "getUDiv("; break;
807 case Instruction::SDiv: Out << "getSDiv("; break;
808 case Instruction::FDiv: Out << "getFDiv("; break;
809 case Instruction::URem: Out << "getURem("; break;
810 case Instruction::SRem: Out << "getSRem("; break;
811 case Instruction::FRem: Out << "getFRem("; break;
812 case Instruction::And: Out << "getAnd("; break;
813 case Instruction::Or: Out << "getOr("; break;
814 case Instruction::Xor: Out << "getXor("; break;
815 case Instruction::ICmp:
816 Out << "getICmp(ICmpInst::ICMP_";
817 switch (CE->getPredicate()) {
818 case ICmpInst::ICMP_EQ: Out << "EQ"; break;
819 case ICmpInst::ICMP_NE: Out << "NE"; break;
820 case ICmpInst::ICMP_SLT: Out << "SLT"; break;
821 case ICmpInst::ICMP_ULT: Out << "ULT"; break;
822 case ICmpInst::ICMP_SGT: Out << "SGT"; break;
823 case ICmpInst::ICMP_UGT: Out << "UGT"; break;
824 case ICmpInst::ICMP_SLE: Out << "SLE"; break;
825 case ICmpInst::ICMP_ULE: Out << "ULE"; break;
826 case ICmpInst::ICMP_SGE: Out << "SGE"; break;
827 case ICmpInst::ICMP_UGE: Out << "UGE"; break;
828 default: error("Invalid ICmp Predicate");
831 case Instruction::FCmp:
832 Out << "getFCmp(FCmpInst::FCMP_";
833 switch (CE->getPredicate()) {
834 case FCmpInst::FCMP_FALSE: Out << "FALSE"; break;
835 case FCmpInst::FCMP_ORD: Out << "ORD"; break;
836 case FCmpInst::FCMP_UNO: Out << "UNO"; break;
837 case FCmpInst::FCMP_OEQ: Out << "OEQ"; break;
838 case FCmpInst::FCMP_UEQ: Out << "UEQ"; break;
839 case FCmpInst::FCMP_ONE: Out << "ONE"; break;
840 case FCmpInst::FCMP_UNE: Out << "UNE"; break;
841 case FCmpInst::FCMP_OLT: Out << "OLT"; break;
842 case FCmpInst::FCMP_ULT: Out << "ULT"; break;
843 case FCmpInst::FCMP_OGT: Out << "OGT"; break;
844 case FCmpInst::FCMP_UGT: Out << "UGT"; break;
845 case FCmpInst::FCMP_OLE: Out << "OLE"; break;
846 case FCmpInst::FCMP_ULE: Out << "ULE"; break;
847 case FCmpInst::FCMP_OGE: Out << "OGE"; break;
848 case FCmpInst::FCMP_UGE: Out << "UGE"; break;
849 case FCmpInst::FCMP_TRUE: Out << "TRUE"; break;
850 default: error("Invalid FCmp Predicate");
853 case Instruction::Shl: Out << "getShl("; break;
854 case Instruction::LShr: Out << "getLShr("; break;
855 case Instruction::AShr: Out << "getAShr("; break;
856 case Instruction::Select: Out << "getSelect("; break;
857 case Instruction::ExtractElement: Out << "getExtractElement("; break;
858 case Instruction::InsertElement: Out << "getInsertElement("; break;
859 case Instruction::ShuffleVector: Out << "getShuffleVector("; break;
861 error("Invalid constant expression");
864 Out << getCppName(CE->getOperand(0));
865 for (unsigned i = 1; i < CE->getNumOperands(); ++i)
866 Out << ", " << getCppName(CE->getOperand(i));
870 error("Bad Constant");
871 Out << "Constant* " << constName << " = 0; ";
877 CppWriter::printConstants(const Module* M) {
878 // Traverse all the global variables looking for constant initializers
879 for (Module::const_global_iterator I = TheModule->global_begin(),
880 E = TheModule->global_end(); I != E; ++I)
881 if (I->hasInitializer())
882 printConstant(I->getInitializer());
884 // Traverse the LLVM functions looking for constants
885 for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
887 // Add all of the basic blocks and instructions
888 for (Function::const_iterator BB = FI->begin(),
889 E = FI->end(); BB != E; ++BB) {
890 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
892 for (unsigned i = 0; i < I->getNumOperands(); ++i) {
893 if (Constant* C = dyn_cast<Constant>(I->getOperand(i))) {
902 void CppWriter::printVariableUses(const GlobalVariable *GV) {
903 nl(Out) << "// Type Definitions";
905 printType(GV->getType());
906 if (GV->hasInitializer()) {
907 Constant* Init = GV->getInitializer();
908 printType(Init->getType());
909 if (Function* F = dyn_cast<Function>(Init)) {
910 nl(Out)<< "/ Function Declarations"; nl(Out);
911 printFunctionHead(F);
912 } else if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
913 nl(Out) << "// Global Variable Declarations"; nl(Out);
914 printVariableHead(gv);
916 nl(Out) << "// Constant Definitions"; nl(Out);
919 if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
920 nl(Out) << "// Global Variable Definitions"; nl(Out);
921 printVariableBody(gv);
926 void CppWriter::printVariableHead(const GlobalVariable *GV) {
927 nl(Out) << "GlobalVariable* " << getCppName(GV);
929 Out << " = mod->getGlobalVariable(";
930 printEscapedString(GV->getName());
931 Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)";
932 nl(Out) << "if (!" << getCppName(GV) << ") {";
933 in(); nl(Out) << getCppName(GV);
935 Out << " = new GlobalVariable(";
936 nl(Out) << "/*Type=*/";
937 printCppName(GV->getType()->getElementType());
939 nl(Out) << "/*isConstant=*/" << (GV->isConstant()?"true":"false");
941 nl(Out) << "/*Linkage=*/";
942 printLinkageType(GV->getLinkage());
944 nl(Out) << "/*Initializer=*/0, ";
945 if (GV->hasInitializer()) {
946 Out << "// has initializer, specified below";
948 nl(Out) << "/*Name=*/\"";
949 printEscapedString(GV->getName());
954 if (GV->hasSection()) {
956 Out << "->setSection(\"";
957 printEscapedString(GV->getSection());
961 if (GV->getAlignment()) {
963 Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");";
967 out(); Out << "}"; nl(Out);
972 CppWriter::printVariableBody(const GlobalVariable *GV) {
973 if (GV->hasInitializer()) {
975 Out << "->setInitializer(";
976 //if (!isa<GlobalValue(GV->getInitializer()))
978 Out << getCppName(GV->getInitializer()) << ");";
984 CppWriter::getOpName(Value* V) {
985 if (!isa<Instruction>(V) || DefinedValues.find(V) != DefinedValues.end())
986 return getCppName(V);
988 // See if its alread in the map of forward references, if so just return the
989 // name we already set up for it
990 ForwardRefMap::const_iterator I = ForwardRefs.find(V);
991 if (I != ForwardRefs.end())
994 // This is a new forward reference. Generate a unique name for it
995 std::string result(std::string("fwdref_") + utostr(uniqueNum++));
997 // Yes, this is a hack. An Argument is the smallest instantiable value that
998 // we can make as a placeholder for the real value. We'll replace these
999 // Argument instances later.
1000 Out << "Argument* " << result << " = new Argument("
1001 << getCppName(V->getType()) << ");";
1003 ForwardRefs[V] = result;
1007 // printInstruction - This member is called for each Instruction in a function.
1009 CppWriter::printInstruction(const Instruction *I, const std::string& bbname) {
1010 std::string iName(getCppName(I));
1012 // Before we emit this instruction, we need to take care of generating any
1013 // forward references. So, we get the names of all the operands in advance
1014 std::string* opNames = new std::string[I->getNumOperands()];
1015 for (unsigned i = 0; i < I->getNumOperands(); i++) {
1016 opNames[i] = getOpName(I->getOperand(i));
1019 switch (I->getOpcode()) {
1020 case Instruction::Ret: {
1021 const ReturnInst* ret = cast<ReturnInst>(I);
1022 Out << "new ReturnInst("
1023 << (ret->getReturnValue() ? opNames[0] + ", " : "") << bbname << ");";
1026 case Instruction::Br: {
1027 const BranchInst* br = cast<BranchInst>(I);
1028 Out << "new BranchInst(" ;
1029 if (br->getNumOperands() == 3 ) {
1030 Out << opNames[0] << ", "
1031 << opNames[1] << ", "
1032 << opNames[2] << ", ";
1034 } else if (br->getNumOperands() == 1) {
1035 Out << opNames[0] << ", ";
1037 error("Branch with 2 operands?");
1039 Out << bbname << ");";
1042 case Instruction::Switch: {
1043 const SwitchInst* sw = cast<SwitchInst>(I);
1044 Out << "SwitchInst* " << iName << " = new SwitchInst("
1045 << opNames[0] << ", "
1046 << opNames[1] << ", "
1047 << sw->getNumCases() << ", " << bbname << ");";
1049 for (unsigned i = 2; i < sw->getNumOperands(); i += 2 ) {
1050 Out << iName << "->addCase("
1051 << opNames[i] << ", "
1052 << opNames[i+1] << ");";
1057 case Instruction::Invoke: {
1058 const InvokeInst* inv = cast<InvokeInst>(I);
1059 Out << "std::vector<Value*> " << iName << "_params;";
1061 for (unsigned i = 3; i < inv->getNumOperands(); ++i) {
1062 Out << iName << "_params.push_back("
1063 << opNames[i] << ");";
1066 Out << "InvokeInst *" << iName << " = new InvokeInst("
1067 << opNames[0] << ", "
1068 << opNames[1] << ", "
1069 << opNames[2] << ", "
1070 << "&" << iName << "_params[0], " << inv->getNumOperands() - 3
1072 printEscapedString(inv->getName());
1073 Out << "\", " << bbname << ");";
1074 nl(Out) << iName << "->setCallingConv(";
1075 printCallingConv(inv->getCallingConv());
1079 case Instruction::Unwind: {
1080 Out << "new UnwindInst("
1084 case Instruction::Unreachable:{
1085 Out << "new UnreachableInst("
1089 case Instruction::Add:
1090 case Instruction::Sub:
1091 case Instruction::Mul:
1092 case Instruction::UDiv:
1093 case Instruction::SDiv:
1094 case Instruction::FDiv:
1095 case Instruction::URem:
1096 case Instruction::SRem:
1097 case Instruction::FRem:
1098 case Instruction::And:
1099 case Instruction::Or:
1100 case Instruction::Xor:
1101 case Instruction::Shl:
1102 case Instruction::LShr:
1103 case Instruction::AShr:{
1104 Out << "BinaryOperator* " << iName << " = BinaryOperator::create(";
1105 switch (I->getOpcode()) {
1106 case Instruction::Add: Out << "Instruction::Add"; break;
1107 case Instruction::Sub: Out << "Instruction::Sub"; break;
1108 case Instruction::Mul: Out << "Instruction::Mul"; break;
1109 case Instruction::UDiv:Out << "Instruction::UDiv"; break;
1110 case Instruction::SDiv:Out << "Instruction::SDiv"; break;
1111 case Instruction::FDiv:Out << "Instruction::FDiv"; break;
1112 case Instruction::URem:Out << "Instruction::URem"; break;
1113 case Instruction::SRem:Out << "Instruction::SRem"; break;
1114 case Instruction::FRem:Out << "Instruction::FRem"; break;
1115 case Instruction::And: Out << "Instruction::And"; break;
1116 case Instruction::Or: Out << "Instruction::Or"; break;
1117 case Instruction::Xor: Out << "Instruction::Xor"; break;
1118 case Instruction::Shl: Out << "Instruction::Shl"; break;
1119 case Instruction::LShr:Out << "Instruction::LShr"; break;
1120 case Instruction::AShr:Out << "Instruction::AShr"; break;
1121 default: Out << "Instruction::BadOpCode"; break;
1123 Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1124 printEscapedString(I->getName());
1125 Out << "\", " << bbname << ");";
1128 case Instruction::FCmp: {
1129 Out << "FCmpInst* " << iName << " = new FCmpInst(";
1130 switch (cast<FCmpInst>(I)->getPredicate()) {
1131 case FCmpInst::FCMP_FALSE: Out << "FCmpInst::FCMP_FALSE"; break;
1132 case FCmpInst::FCMP_OEQ : Out << "FCmpInst::FCMP_OEQ"; break;
1133 case FCmpInst::FCMP_OGT : Out << "FCmpInst::FCMP_OGT"; break;
1134 case FCmpInst::FCMP_OGE : Out << "FCmpInst::FCMP_OGE"; break;
1135 case FCmpInst::FCMP_OLT : Out << "FCmpInst::FCMP_OLT"; break;
1136 case FCmpInst::FCMP_OLE : Out << "FCmpInst::FCMP_OLE"; break;
1137 case FCmpInst::FCMP_ONE : Out << "FCmpInst::FCMP_ONE"; break;
1138 case FCmpInst::FCMP_ORD : Out << "FCmpInst::FCMP_ORD"; break;
1139 case FCmpInst::FCMP_UNO : Out << "FCmpInst::FCMP_UNO"; break;
1140 case FCmpInst::FCMP_UEQ : Out << "FCmpInst::FCMP_UEQ"; break;
1141 case FCmpInst::FCMP_UGT : Out << "FCmpInst::FCMP_UGT"; break;
1142 case FCmpInst::FCMP_UGE : Out << "FCmpInst::FCMP_UGE"; break;
1143 case FCmpInst::FCMP_ULT : Out << "FCmpInst::FCMP_ULT"; break;
1144 case FCmpInst::FCMP_ULE : Out << "FCmpInst::FCMP_ULE"; break;
1145 case FCmpInst::FCMP_UNE : Out << "FCmpInst::FCMP_UNE"; break;
1146 case FCmpInst::FCMP_TRUE : Out << "FCmpInst::FCMP_TRUE"; break;
1147 default: Out << "FCmpInst::BAD_ICMP_PREDICATE"; break;
1149 Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1150 printEscapedString(I->getName());
1151 Out << "\", " << bbname << ");";
1154 case Instruction::ICmp: {
1155 Out << "ICmpInst* " << iName << " = new ICmpInst(";
1156 switch (cast<ICmpInst>(I)->getPredicate()) {
1157 case ICmpInst::ICMP_EQ: Out << "ICmpInst::ICMP_EQ"; break;
1158 case ICmpInst::ICMP_NE: Out << "ICmpInst::ICMP_NE"; break;
1159 case ICmpInst::ICMP_ULE: Out << "ICmpInst::ICMP_ULE"; break;
1160 case ICmpInst::ICMP_SLE: Out << "ICmpInst::ICMP_SLE"; break;
1161 case ICmpInst::ICMP_UGE: Out << "ICmpInst::ICMP_UGE"; break;
1162 case ICmpInst::ICMP_SGE: Out << "ICmpInst::ICMP_SGE"; break;
1163 case ICmpInst::ICMP_ULT: Out << "ICmpInst::ICMP_ULT"; break;
1164 case ICmpInst::ICMP_SLT: Out << "ICmpInst::ICMP_SLT"; break;
1165 case ICmpInst::ICMP_UGT: Out << "ICmpInst::ICMP_UGT"; break;
1166 case ICmpInst::ICMP_SGT: Out << "ICmpInst::ICMP_SGT"; break;
1167 default: Out << "ICmpInst::BAD_ICMP_PREDICATE"; break;
1169 Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1170 printEscapedString(I->getName());
1171 Out << "\", " << bbname << ");";
1174 case Instruction::Malloc: {
1175 const MallocInst* mallocI = cast<MallocInst>(I);
1176 Out << "MallocInst* " << iName << " = new MallocInst("
1177 << getCppName(mallocI->getAllocatedType()) << ", ";
1178 if (mallocI->isArrayAllocation())
1179 Out << opNames[0] << ", " ;
1181 printEscapedString(mallocI->getName());
1182 Out << "\", " << bbname << ");";
1183 if (mallocI->getAlignment())
1184 nl(Out) << iName << "->setAlignment("
1185 << mallocI->getAlignment() << ");";
1188 case Instruction::Free: {
1189 Out << "FreeInst* " << iName << " = new FreeInst("
1190 << getCppName(I->getOperand(0)) << ", " << bbname << ");";
1193 case Instruction::Alloca: {
1194 const AllocaInst* allocaI = cast<AllocaInst>(I);
1195 Out << "AllocaInst* " << iName << " = new AllocaInst("
1196 << getCppName(allocaI->getAllocatedType()) << ", ";
1197 if (allocaI->isArrayAllocation())
1198 Out << opNames[0] << ", ";
1200 printEscapedString(allocaI->getName());
1201 Out << "\", " << bbname << ");";
1202 if (allocaI->getAlignment())
1203 nl(Out) << iName << "->setAlignment("
1204 << allocaI->getAlignment() << ");";
1207 case Instruction::Load:{
1208 const LoadInst* load = cast<LoadInst>(I);
1209 Out << "LoadInst* " << iName << " = new LoadInst("
1210 << opNames[0] << ", \"";
1211 printEscapedString(load->getName());
1212 Out << "\", " << (load->isVolatile() ? "true" : "false" )
1213 << ", " << bbname << ");";
1216 case Instruction::Store: {
1217 const StoreInst* store = cast<StoreInst>(I);
1218 Out << "StoreInst* " << iName << " = new StoreInst("
1219 << opNames[0] << ", "
1220 << opNames[1] << ", "
1221 << (store->isVolatile() ? "true" : "false")
1222 << ", " << bbname << ");";
1225 case Instruction::GetElementPtr: {
1226 const GetElementPtrInst* gep = cast<GetElementPtrInst>(I);
1227 if (gep->getNumOperands() <= 2) {
1228 Out << "GetElementPtrInst* " << iName << " = new GetElementPtrInst("
1230 if (gep->getNumOperands() == 2)
1231 Out << ", " << opNames[1];
1233 Out << "std::vector<Value*> " << iName << "_indices;";
1235 for (unsigned i = 1; i < gep->getNumOperands(); ++i ) {
1236 Out << iName << "_indices.push_back("
1237 << opNames[i] << ");";
1240 Out << "Instruction* " << iName << " = new GetElementPtrInst("
1241 << opNames[0] << ", &" << iName << "_indices[0], "
1242 << gep->getNumOperands() - 1;
1245 printEscapedString(gep->getName());
1246 Out << "\", " << bbname << ");";
1249 case Instruction::PHI: {
1250 const PHINode* phi = cast<PHINode>(I);
1252 Out << "PHINode* " << iName << " = new PHINode("
1253 << getCppName(phi->getType()) << ", \"";
1254 printEscapedString(phi->getName());
1255 Out << "\", " << bbname << ");";
1256 nl(Out) << iName << "->reserveOperandSpace("
1257 << phi->getNumIncomingValues()
1260 for (unsigned i = 0; i < phi->getNumOperands(); i+=2) {
1261 Out << iName << "->addIncoming("
1262 << opNames[i] << ", " << opNames[i+1] << ");";
1267 case Instruction::Trunc:
1268 case Instruction::ZExt:
1269 case Instruction::SExt:
1270 case Instruction::FPTrunc:
1271 case Instruction::FPExt:
1272 case Instruction::FPToUI:
1273 case Instruction::FPToSI:
1274 case Instruction::UIToFP:
1275 case Instruction::SIToFP:
1276 case Instruction::PtrToInt:
1277 case Instruction::IntToPtr:
1278 case Instruction::BitCast: {
1279 const CastInst* cst = cast<CastInst>(I);
1280 Out << "CastInst* " << iName << " = new ";
1281 switch (I->getOpcode()) {
1282 case Instruction::Trunc: Out << "TruncInst"; break;
1283 case Instruction::ZExt: Out << "ZExtInst"; break;
1284 case Instruction::SExt: Out << "SExtInst"; break;
1285 case Instruction::FPTrunc: Out << "FPTruncInst"; break;
1286 case Instruction::FPExt: Out << "FPExtInst"; break;
1287 case Instruction::FPToUI: Out << "FPToUIInst"; break;
1288 case Instruction::FPToSI: Out << "FPToSIInst"; break;
1289 case Instruction::UIToFP: Out << "UIToFPInst"; break;
1290 case Instruction::SIToFP: Out << "SIToFPInst"; break;
1291 case Instruction::PtrToInt: Out << "PtrToIntInst"; break;
1292 case Instruction::IntToPtr: Out << "IntToPtrInst"; break;
1293 case Instruction::BitCast: Out << "BitCastInst"; break;
1294 default: assert(!"Unreachable"); break;
1296 Out << "(" << opNames[0] << ", "
1297 << getCppName(cst->getType()) << ", \"";
1298 printEscapedString(cst->getName());
1299 Out << "\", " << bbname << ");";
1302 case Instruction::Call:{
1303 const CallInst* call = cast<CallInst>(I);
1304 if (InlineAsm* ila = dyn_cast<InlineAsm>(call->getOperand(0))) {
1305 Out << "InlineAsm* " << getCppName(ila) << " = InlineAsm::get("
1306 << getCppName(ila->getFunctionType()) << ", \""
1307 << ila->getAsmString() << "\", \""
1308 << ila->getConstraintString() << "\","
1309 << (ila->hasSideEffects() ? "true" : "false") << ");";
1312 if (call->getNumOperands() > 3) {
1313 Out << "std::vector<Value*> " << iName << "_params;";
1315 for (unsigned i = 1; i < call->getNumOperands(); ++i) {
1316 Out << iName << "_params.push_back(" << opNames[i] << ");";
1319 Out << "CallInst* " << iName << " = new CallInst("
1320 << opNames[0] << ", &" << iName << "_params[0], "
1321 << call->getNumOperands() - 1 << ", \"";
1322 } else if (call->getNumOperands() == 3) {
1323 Out << "CallInst* " << iName << " = new CallInst("
1324 << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1325 } else if (call->getNumOperands() == 2) {
1326 Out << "CallInst* " << iName << " = new CallInst("
1327 << opNames[0] << ", " << opNames[1] << ", \"";
1329 Out << "CallInst* " << iName << " = new CallInst(" << opNames[0]
1332 printEscapedString(call->getName());
1333 Out << "\", " << bbname << ");";
1334 nl(Out) << iName << "->setCallingConv(";
1335 printCallingConv(call->getCallingConv());
1337 nl(Out) << iName << "->setTailCall("
1338 << (call->isTailCall() ? "true":"false");
1342 case Instruction::Select: {
1343 const SelectInst* sel = cast<SelectInst>(I);
1344 Out << "SelectInst* " << getCppName(sel) << " = new SelectInst(";
1345 Out << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1346 printEscapedString(sel->getName());
1347 Out << "\", " << bbname << ");";
1350 case Instruction::UserOp1:
1352 case Instruction::UserOp2: {
1353 /// FIXME: What should be done here?
1356 case Instruction::VAArg: {
1357 const VAArgInst* va = cast<VAArgInst>(I);
1358 Out << "VAArgInst* " << getCppName(va) << " = new VAArgInst("
1359 << opNames[0] << ", " << getCppName(va->getType()) << ", \"";
1360 printEscapedString(va->getName());
1361 Out << "\", " << bbname << ");";
1364 case Instruction::ExtractElement: {
1365 const ExtractElementInst* eei = cast<ExtractElementInst>(I);
1366 Out << "ExtractElementInst* " << getCppName(eei)
1367 << " = new ExtractElementInst(" << opNames[0]
1368 << ", " << opNames[1] << ", \"";
1369 printEscapedString(eei->getName());
1370 Out << "\", " << bbname << ");";
1373 case Instruction::InsertElement: {
1374 const InsertElementInst* iei = cast<InsertElementInst>(I);
1375 Out << "InsertElementInst* " << getCppName(iei)
1376 << " = new InsertElementInst(" << opNames[0]
1377 << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1378 printEscapedString(iei->getName());
1379 Out << "\", " << bbname << ");";
1382 case Instruction::ShuffleVector: {
1383 const ShuffleVectorInst* svi = cast<ShuffleVectorInst>(I);
1384 Out << "ShuffleVectorInst* " << getCppName(svi)
1385 << " = new ShuffleVectorInst(" << opNames[0]
1386 << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1387 printEscapedString(svi->getName());
1388 Out << "\", " << bbname << ");";
1392 DefinedValues.insert(I);
1397 // Print out the types, constants and declarations needed by one function
1398 void CppWriter::printFunctionUses(const Function* F) {
1400 nl(Out) << "// Type Definitions"; nl(Out);
1402 // Print the function's return type
1403 printType(F->getReturnType());
1405 // Print the function's function type
1406 printType(F->getFunctionType());
1408 // Print the types of each of the function's arguments
1409 for(Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1411 printType(AI->getType());
1415 // Print type definitions for every type referenced by an instruction and
1416 // make a note of any global values or constants that are referenced
1417 std::vector<GlobalValue*> gvs;
1418 std::vector<Constant*> consts;
1419 for (Function::const_iterator BB = F->begin(), BE = F->end(); BB != BE; ++BB){
1420 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
1422 // Print the type of the instruction itself
1423 printType(I->getType());
1425 // Print the type of each of the instruction's operands
1426 for (unsigned i = 0; i < I->getNumOperands(); ++i) {
1427 Value* operand = I->getOperand(i);
1428 printType(operand->getType());
1429 if (GlobalValue* GV = dyn_cast<GlobalValue>(operand))
1431 else if (Constant* C = dyn_cast<Constant>(operand))
1432 consts.push_back(C);
1437 // Print the function declarations for any functions encountered
1438 nl(Out) << "// Function Declarations"; nl(Out);
1439 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1441 if (Function* Fun = dyn_cast<Function>(*I)) {
1442 if (!is_inline || Fun != F)
1443 printFunctionHead(Fun);
1447 // Print the global variable declarations for any variables encountered
1448 nl(Out) << "// Global Variable Declarations"; nl(Out);
1449 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1451 if (GlobalVariable* F = dyn_cast<GlobalVariable>(*I))
1452 printVariableHead(F);
1455 // Print the constants found
1456 nl(Out) << "// Constant Definitions"; nl(Out);
1457 for (std::vector<Constant*>::iterator I = consts.begin(), E = consts.end();
1462 // Process the global variables definitions now that all the constants have
1463 // been emitted. These definitions just couple the gvars with their constant
1465 nl(Out) << "// Global Variable Definitions"; nl(Out);
1466 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1468 if (GlobalVariable* GV = dyn_cast<GlobalVariable>(*I))
1469 printVariableBody(GV);
1473 void CppWriter::printFunctionHead(const Function* F) {
1474 nl(Out) << "Function* " << getCppName(F);
1476 Out << " = mod->getFunction(\"";
1477 printEscapedString(F->getName());
1478 Out << "\", " << getCppName(F->getFunctionType()) << ");";
1479 nl(Out) << "if (!" << getCppName(F) << ") {";
1480 nl(Out) << getCppName(F);
1482 Out<< " = new Function(";
1483 nl(Out,1) << "/*Type=*/" << getCppName(F->getFunctionType()) << ",";
1484 nl(Out) << "/*Linkage=*/";
1485 printLinkageType(F->getLinkage());
1487 nl(Out) << "/*Name=*/\"";
1488 printEscapedString(F->getName());
1489 Out << "\", mod); " << (F->isDeclaration()? "// (external, no body)" : "");
1492 Out << "->setCallingConv(";
1493 printCallingConv(F->getCallingConv());
1496 if (F->hasSection()) {
1498 Out << "->setSection(\"" << F->getSection() << "\");";
1501 if (F->getAlignment()) {
1503 Out << "->setAlignment(" << F->getAlignment() << ");";
1512 void CppWriter::printFunctionBody(const Function *F) {
1513 if (F->isDeclaration())
1514 return; // external functions have no bodies.
1516 // Clear the DefinedValues and ForwardRefs maps because we can't have
1517 // cross-function forward refs
1518 ForwardRefs.clear();
1519 DefinedValues.clear();
1521 // Create all the argument values
1523 if (!F->arg_empty()) {
1524 Out << "Function::arg_iterator args = " << getCppName(F)
1525 << "->arg_begin();";
1528 for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1530 Out << "Value* " << getCppName(AI) << " = args++;";
1532 if (AI->hasName()) {
1533 Out << getCppName(AI) << "->setName(\"" << AI->getName() << "\");";
1539 // Create all the basic blocks
1541 for (Function::const_iterator BI = F->begin(), BE = F->end();
1543 std::string bbname(getCppName(BI));
1544 Out << "BasicBlock* " << bbname << " = new BasicBlock(\"";
1546 printEscapedString(BI->getName());
1547 Out << "\"," << getCppName(BI->getParent()) << ",0);";
1551 // Output all of its basic blocks... for the function
1552 for (Function::const_iterator BI = F->begin(), BE = F->end();
1554 std::string bbname(getCppName(BI));
1555 nl(Out) << "// Block " << BI->getName() << " (" << bbname << ")";
1558 // Output all of the instructions in the basic block...
1559 for (BasicBlock::const_iterator I = BI->begin(), E = BI->end();
1561 printInstruction(I,bbname);
1565 // Loop over the ForwardRefs and resolve them now that all instructions
1567 if (!ForwardRefs.empty()) {
1568 nl(Out) << "// Resolve Forward References";
1572 while (!ForwardRefs.empty()) {
1573 ForwardRefMap::iterator I = ForwardRefs.begin();
1574 Out << I->second << "->replaceAllUsesWith("
1575 << getCppName(I->first) << "); delete " << I->second << ";";
1577 ForwardRefs.erase(I);
1581 void CppWriter::printInline(const std::string& fname, const std::string& func) {
1582 const Function* F = TheModule->getFunction(func);
1584 error(std::string("Function '") + func + "' not found in input module");
1587 if (F->isDeclaration()) {
1588 error(std::string("Function '") + func + "' is external!");
1591 nl(Out) << "BasicBlock* " << fname << "(Module* mod, Function *"
1593 unsigned arg_count = 1;
1594 for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1596 Out << ", Value* arg_" << arg_count;
1601 printFunctionUses(F);
1602 printFunctionBody(F);
1604 Out << "return " << getCppName(F->begin()) << ";";
1609 void CppWriter::printModuleBody() {
1610 // Print out all the type definitions
1611 nl(Out) << "// Type Definitions"; nl(Out);
1612 printTypes(TheModule);
1614 // Functions can call each other and global variables can reference them so
1615 // define all the functions first before emitting their function bodies.
1616 nl(Out) << "// Function Declarations"; nl(Out);
1617 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1619 printFunctionHead(I);
1621 // Process the global variables declarations. We can't initialze them until
1622 // after the constants are printed so just print a header for each global
1623 nl(Out) << "// Global Variable Declarations\n"; nl(Out);
1624 for (Module::const_global_iterator I = TheModule->global_begin(),
1625 E = TheModule->global_end(); I != E; ++I) {
1626 printVariableHead(I);
1629 // Print out all the constants definitions. Constants don't recurse except
1630 // through GlobalValues. All GlobalValues have been declared at this point
1631 // so we can proceed to generate the constants.
1632 nl(Out) << "// Constant Definitions"; nl(Out);
1633 printConstants(TheModule);
1635 // Process the global variables definitions now that all the constants have
1636 // been emitted. These definitions just couple the gvars with their constant
1638 nl(Out) << "// Global Variable Definitions"; nl(Out);
1639 for (Module::const_global_iterator I = TheModule->global_begin(),
1640 E = TheModule->global_end(); I != E; ++I) {
1641 printVariableBody(I);
1644 // Finally, we can safely put out all of the function bodies.
1645 nl(Out) << "// Function Definitions"; nl(Out);
1646 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1648 if (!I->isDeclaration()) {
1649 nl(Out) << "// Function: " << I->getName() << " (" << getCppName(I)
1653 printFunctionBody(I);
1660 void CppWriter::printProgram(
1661 const std::string& fname,
1662 const std::string& mName
1664 Out << "#include <llvm/Module.h>\n";
1665 Out << "#include <llvm/DerivedTypes.h>\n";
1666 Out << "#include <llvm/Constants.h>\n";
1667 Out << "#include <llvm/GlobalVariable.h>\n";
1668 Out << "#include <llvm/Function.h>\n";
1669 Out << "#include <llvm/CallingConv.h>\n";
1670 Out << "#include <llvm/BasicBlock.h>\n";
1671 Out << "#include <llvm/Instructions.h>\n";
1672 Out << "#include <llvm/InlineAsm.h>\n";
1673 Out << "#include <llvm/ParameterAttributes.h>\n";
1674 Out << "#include <llvm/Support/MathExtras.h>\n";
1675 Out << "#include <llvm/Pass.h>\n";
1676 Out << "#include <llvm/PassManager.h>\n";
1677 Out << "#include <llvm/Analysis/Verifier.h>\n";
1678 Out << "#include <llvm/Assembly/PrintModulePass.h>\n";
1679 Out << "#include <algorithm>\n";
1680 Out << "#include <iostream>\n\n";
1681 Out << "using namespace llvm;\n\n";
1682 Out << "Module* " << fname << "();\n\n";
1683 Out << "int main(int argc, char**argv) {\n";
1684 Out << " Module* Mod = makeLLVMModule();\n";
1685 Out << " verifyModule(*Mod, PrintMessageAction);\n";
1686 Out << " std::cerr.flush();\n";
1687 Out << " std::cout.flush();\n";
1688 Out << " PassManager PM;\n";
1689 Out << " PM.add(new PrintModulePass(&llvm::cout));\n";
1690 Out << " PM.run(*Mod);\n";
1691 Out << " return 0;\n";
1693 printModule(fname,mName);
1696 void CppWriter::printModule(
1697 const std::string& fname,
1698 const std::string& mName
1700 nl(Out) << "Module* " << fname << "() {";
1701 nl(Out,1) << "// Module Construction";
1702 nl(Out) << "Module* mod = new Module(\"" << mName << "\");";
1703 if (!TheModule->getTargetTriple().empty()) {
1704 nl(Out) << "mod->setDataLayout(\"" << TheModule->getDataLayout() << "\");";
1706 if (!TheModule->getTargetTriple().empty()) {
1707 nl(Out) << "mod->setTargetTriple(\"" << TheModule->getTargetTriple()
1711 if (!TheModule->getModuleInlineAsm().empty()) {
1712 nl(Out) << "mod->setModuleInlineAsm(\"";
1713 printEscapedString(TheModule->getModuleInlineAsm());
1718 // Loop over the dependent libraries and emit them.
1719 Module::lib_iterator LI = TheModule->lib_begin();
1720 Module::lib_iterator LE = TheModule->lib_end();
1722 Out << "mod->addLibrary(\"" << *LI << "\");";
1727 nl(Out) << "return mod;";
1732 void CppWriter::printContents(
1733 const std::string& fname, // Name of generated function
1734 const std::string& mName // Name of module generated module
1736 Out << "\nModule* " << fname << "(Module *mod) {\n";
1737 Out << "\nmod->setModuleIdentifier(\"" << mName << "\");\n";
1739 Out << "\nreturn mod;\n";
1743 void CppWriter::printFunction(
1744 const std::string& fname, // Name of generated function
1745 const std::string& funcName // Name of function to generate
1747 const Function* F = TheModule->getFunction(funcName);
1749 error(std::string("Function '") + funcName + "' not found in input module");
1752 Out << "\nFunction* " << fname << "(Module *mod) {\n";
1753 printFunctionUses(F);
1754 printFunctionHead(F);
1755 printFunctionBody(F);
1756 Out << "return " << getCppName(F) << ";\n";
1760 void CppWriter::printVariable(
1761 const std::string& fname, /// Name of generated function
1762 const std::string& varName // Name of variable to generate
1764 const GlobalVariable* GV = TheModule->getNamedGlobal(varName);
1767 error(std::string("Variable '") + varName + "' not found in input module");
1770 Out << "\nGlobalVariable* " << fname << "(Module *mod) {\n";
1771 printVariableUses(GV);
1772 printVariableHead(GV);
1773 printVariableBody(GV);
1774 Out << "return " << getCppName(GV) << ";\n";
1778 void CppWriter::printType(
1779 const std::string& fname, /// Name of generated function
1780 const std::string& typeName // Name of type to generate
1782 const Type* Ty = TheModule->getTypeByName(typeName);
1784 error(std::string("Type '") + typeName + "' not found in input module");
1787 Out << "\nType* " << fname << "(Module *mod) {\n";
1789 Out << "return " << getCppName(Ty) << ";\n";
1793 } // end anonymous llvm
1797 void WriteModuleToCppFile(Module* mod, std::ostream& o) {
1798 // Initialize a CppWriter for us to use
1799 CppWriter W(o, mod);
1802 o << "// Generated by llvm2cpp - DO NOT MODIFY!\n\n";
1804 // Get the name of the function we're supposed to generate
1805 std::string fname = FuncName.getValue();
1807 // Get the name of the thing we are to generate
1808 std::string tgtname = NameToGenerate.getValue();
1809 if (GenerationType == GenModule ||
1810 GenerationType == GenContents ||
1811 GenerationType == GenProgram) {
1812 if (tgtname == "!bad!") {
1813 if (mod->getModuleIdentifier() == "-")
1814 tgtname = "<stdin>";
1816 tgtname = mod->getModuleIdentifier();
1818 } else if (tgtname == "!bad!") {
1819 W.error("You must use the -for option with -gen-{function,variable,type}");
1822 switch (WhatToGenerate(GenerationType)) {
1825 fname = "makeLLVMModule";
1826 W.printProgram(fname,tgtname);
1830 fname = "makeLLVMModule";
1831 W.printModule(fname,tgtname);
1835 fname = "makeLLVMModuleContents";
1836 W.printContents(fname,tgtname);
1840 fname = "makeLLVMFunction";
1841 W.printFunction(fname,tgtname);
1845 fname = "makeLLVMInline";
1846 W.printInline(fname,tgtname);
1850 fname = "makeLLVMVariable";
1851 W.printVariable(fname,tgtname);
1855 fname = "makeLLVMType";
1856 W.printType(fname,tgtname);
1859 W.error("Invalid generation option");