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/Module.h"
22 #include "llvm/SymbolTable.h"
23 #include "llvm/Support/CFG.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/STLExtras.h"
26 #include "llvm/Support/MathExtras.h"
27 #include "llvm/Support/CommandLine.h"
28 #include "llvm/Config/config.h"
35 static cl::opt<std::string>
36 FuncName("funcname", cl::desc("Specify the name of the generated function"),
37 cl::value_desc("function name"));
49 static cl::opt<WhatToGenerate> GenerationType(cl::Optional,
50 cl::desc("Choose what kind of output to generate"),
53 clEnumValN(GenProgram, "gen-program", "Generate a complete program"),
54 clEnumValN(GenModule, "gen-module", "Generate a module definition"),
55 clEnumValN(GenContents,"gen-contents", "Generate contents of a module"),
56 clEnumValN(GenFunction,"gen-function", "Generate a function definition"),
57 clEnumValN(GenInline, "gen-inline", "Generate an inline function"),
58 clEnumValN(GenVariable,"gen-variable", "Generate a variable definition"),
59 clEnumValN(GenType, "gen-type", "Generate a type definition"),
64 static cl::opt<std::string> NameToGenerate("for", cl::Optional,
65 cl::desc("Specify the name of the thing to generate"),
69 typedef std::vector<const Type*> TypeList;
70 typedef std::map<const Type*,std::string> TypeMap;
71 typedef std::map<const Value*,std::string> ValueMap;
72 typedef std::set<std::string> NameSet;
73 typedef std::set<const Type*> TypeSet;
74 typedef std::set<const Value*> ValueSet;
75 typedef std::map<const Value*,std::string> ForwardRefMap;
80 const Module *TheModule;
84 TypeMap UnresolvedTypes;
88 ValueSet DefinedValues;
89 ForwardRefMap ForwardRefs;
93 inline CppWriter(std::ostream &o, const Module *M, const char* pn="llvm2cpp")
94 : progname(pn), Out(o), TheModule(M), uniqueNum(0), TypeNames(),
95 ValueNames(), UnresolvedTypes(), TypeStack(), is_inline(false) { }
97 const Module* getModule() { return TheModule; }
99 void printProgram(const std::string& fname, const std::string& modName );
100 void printModule(const std::string& fname, const std::string& modName );
101 void printContents(const std::string& fname, const std::string& modName );
102 void printFunction(const std::string& fname, const std::string& funcName );
103 void printInline(const std::string& fname, const std::string& funcName );
104 void printVariable(const std::string& fname, const std::string& varName );
105 void printType(const std::string& fname, const std::string& typeName );
107 void error(const std::string& msg);
110 void printLinkageType(GlobalValue::LinkageTypes LT);
111 void printCallingConv(unsigned cc);
112 void printEscapedString(const std::string& str);
113 void printCFP(const ConstantFP* CFP);
115 std::string getCppName(const Type* val);
116 inline void printCppName(const Type* val);
118 std::string getCppName(const Value* val);
119 inline void printCppName(const Value* val);
121 bool printTypeInternal(const Type* Ty);
122 inline void printType(const Type* Ty);
123 void printTypes(const Module* M);
125 void printConstant(const Constant *CPV);
126 void printConstants(const Module* M);
128 void printVariableUses(const GlobalVariable *GV);
129 void printVariableHead(const GlobalVariable *GV);
130 void printVariableBody(const GlobalVariable *GV);
132 void printFunctionUses(const Function *F);
133 void printFunctionHead(const Function *F);
134 void printFunctionBody(const Function *F);
135 void printInstruction(const Instruction *I, const std::string& bbname);
136 std::string getOpName(Value*);
138 void printModuleBody();
142 static unsigned indent_level = 0;
143 inline std::ostream& nl(std::ostream& Out, int delta = 0) {
145 if (delta >= 0 || indent_level >= unsigned(-delta))
146 indent_level += delta;
147 for (unsigned i = 0; i < indent_level; ++i)
152 inline void in() { indent_level++; }
153 inline void out() { if (indent_level >0) indent_level--; }
156 sanitize(std::string& str) {
157 for (size_t i = 0; i < str.length(); ++i)
158 if (!isalnum(str[i]) && str[i] != '_')
163 getTypePrefix(const Type* Ty ) {
165 switch (Ty->getTypeID()) {
166 case Type::VoidTyID: prefix = "void_"; break;
167 case Type::BoolTyID: prefix = "bool_"; break;
168 case Type::UByteTyID: prefix = "ubyte_"; break;
169 case Type::SByteTyID: prefix = "sbyte_"; break;
170 case Type::UShortTyID: prefix = "ushort_"; break;
171 case Type::ShortTyID: prefix = "short_"; break;
172 case Type::UIntTyID: prefix = "uint_"; break;
173 case Type::IntTyID: prefix = "int_"; break;
174 case Type::ULongTyID: prefix = "ulong_"; break;
175 case Type::LongTyID: prefix = "long_"; break;
176 case Type::FloatTyID: prefix = "float_"; break;
177 case Type::DoubleTyID: prefix = "double_"; break;
178 case Type::LabelTyID: prefix = "label_"; break;
179 case Type::FunctionTyID: prefix = "func_"; break;
180 case Type::StructTyID: prefix = "struct_"; break;
181 case Type::ArrayTyID: prefix = "array_"; break;
182 case Type::PointerTyID: prefix = "ptr_"; break;
183 case Type::PackedTyID: prefix = "packed_"; break;
184 case Type::OpaqueTyID: prefix = "opaque_"; break;
185 default: prefix = "other_"; break;
190 // Looks up the type in the symbol table and returns a pointer to its name or
191 // a null pointer if it wasn't found. Note that this isn't the same as the
192 // Mode::getTypeName function which will return an empty string, not a null
193 // pointer if the name is not found.
194 inline const std::string*
195 findTypeName(const SymbolTable& ST, const Type* Ty)
197 SymbolTable::type_const_iterator TI = ST.type_begin();
198 SymbolTable::type_const_iterator TE = ST.type_end();
199 for (;TI != TE; ++TI)
200 if (TI->second == Ty)
206 CppWriter::error(const std::string& msg) {
207 std::cerr << progname << ": " << msg << "\n";
211 // printCFP - Print a floating point constant .. very carefully :)
212 // This makes sure that conversion to/from floating yields the same binary
213 // result so that we don't lose precision.
215 CppWriter::printCFP(const ConstantFP *CFP) {
216 Out << "ConstantFP::get(";
217 if (CFP->getType() == Type::DoubleTy)
218 Out << "Type::DoubleTy, ";
220 Out << "Type::FloatTy, ";
223 sprintf(Buffer, "%A", CFP->getValue());
224 if ((!strncmp(Buffer, "0x", 2) ||
225 !strncmp(Buffer, "-0x", 3) ||
226 !strncmp(Buffer, "+0x", 3)) &&
227 (atof(Buffer) == CFP->getValue()))
228 if (CFP->getType() == Type::DoubleTy)
229 Out << "BitsToDouble(" << Buffer << ")";
231 Out << "BitsToFloat(" << Buffer << ")";
234 std::string StrVal = ftostr(CFP->getValue());
236 while (StrVal[0] == ' ')
237 StrVal.erase(StrVal.begin());
239 // Check to make sure that the stringized number is not some string like
240 // "Inf" or NaN. Check that the string matches the "[-+]?[0-9]" regex.
241 if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
242 ((StrVal[0] == '-' || StrVal[0] == '+') &&
243 (StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
244 (atof(StrVal.c_str()) == CFP->getValue()))
245 if (CFP->getType() == Type::DoubleTy)
249 else if (CFP->getType() == Type::DoubleTy)
250 Out << "BitsToDouble(0x" << std::hex << DoubleToBits(CFP->getValue())
251 << std::dec << "ULL) /* " << StrVal << " */";
253 Out << "BitsToFloat(0x" << std::hex << FloatToBits(CFP->getValue())
254 << std::dec << "U) /* " << StrVal << " */";
262 CppWriter::printCallingConv(unsigned cc){
263 // Print the calling convention.
265 case CallingConv::C: Out << "CallingConv::C"; break;
266 case CallingConv::CSRet: Out << "CallingConv::CSRet"; break;
267 case CallingConv::Fast: Out << "CallingConv::Fast"; break;
268 case CallingConv::Cold: Out << "CallingConv::Cold"; break;
269 case CallingConv::FirstTargetCC: Out << "CallingConv::FirstTargetCC"; break;
270 default: Out << cc; break;
275 CppWriter::printLinkageType(GlobalValue::LinkageTypes LT) {
277 case GlobalValue::InternalLinkage:
278 Out << "GlobalValue::InternalLinkage"; break;
279 case GlobalValue::LinkOnceLinkage:
280 Out << "GlobalValue::LinkOnceLinkage "; break;
281 case GlobalValue::WeakLinkage:
282 Out << "GlobalValue::WeakLinkage"; break;
283 case GlobalValue::AppendingLinkage:
284 Out << "GlobalValue::AppendingLinkage"; break;
285 case GlobalValue::ExternalLinkage:
286 Out << "GlobalValue::ExternalLinkage"; break;
287 case GlobalValue::DLLImportLinkage:
288 Out << "GlobalValue::DllImportLinkage"; break;
289 case GlobalValue::DLLExportLinkage:
290 Out << "GlobalValue::DllExportLinkage"; break;
291 case GlobalValue::ExternalWeakLinkage:
292 Out << "GlobalValue::ExternalWeakLinkage"; break;
293 case GlobalValue::GhostLinkage:
294 Out << "GlobalValue::GhostLinkage"; break;
298 // printEscapedString - Print each character of the specified string, escaping
299 // it if it is not printable or if it is an escape char.
301 CppWriter::printEscapedString(const std::string &Str) {
302 for (unsigned i = 0, e = Str.size(); i != e; ++i) {
303 unsigned char C = Str[i];
304 if (isprint(C) && C != '"' && C != '\\') {
308 << (char) ((C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
309 << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
315 CppWriter::getCppName(const Type* Ty)
317 // First, handle the primitive types .. easy
318 if (Ty->isPrimitiveType()) {
319 switch (Ty->getTypeID()) {
320 case Type::VoidTyID: return "Type::VoidTy";
321 case Type::BoolTyID: return "Type::BoolTy";
322 case Type::UByteTyID: return "Type::UByteTy";
323 case Type::SByteTyID: return "Type::SByteTy";
324 case Type::UShortTyID: return "Type::UShortTy";
325 case Type::ShortTyID: return "Type::ShortTy";
326 case Type::UIntTyID: return "Type::UIntTy";
327 case Type::IntTyID: return "Type::IntTy";
328 case Type::ULongTyID: return "Type::ULongTy";
329 case Type::LongTyID: return "Type::LongTy";
330 case Type::FloatTyID: return "Type::FloatTy";
331 case Type::DoubleTyID: return "Type::DoubleTy";
332 case Type::LabelTyID: return "Type::LabelTy";
334 error("Invalid primitive type");
337 return "Type::VoidTy"; // shouldn't be returned, but make it sensible
340 // Now, see if we've seen the type before and return that
341 TypeMap::iterator I = TypeNames.find(Ty);
342 if (I != TypeNames.end())
345 // Okay, let's build a new name for this type. Start with a prefix
346 const char* prefix = 0;
347 switch (Ty->getTypeID()) {
348 case Type::FunctionTyID: prefix = "FuncTy_"; break;
349 case Type::StructTyID: prefix = "StructTy_"; break;
350 case Type::ArrayTyID: prefix = "ArrayTy_"; break;
351 case Type::PointerTyID: prefix = "PointerTy_"; break;
352 case Type::OpaqueTyID: prefix = "OpaqueTy_"; break;
353 case Type::PackedTyID: prefix = "PackedTy_"; break;
354 default: prefix = "OtherTy_"; break; // prevent breakage
357 // See if the type has a name in the symboltable and build accordingly
358 const std::string* tName = findTypeName(TheModule->getSymbolTable(), Ty);
361 name = std::string(prefix) + *tName;
363 name = std::string(prefix) + utostr(uniqueNum++);
367 return TypeNames[Ty] = name;
371 CppWriter::printCppName(const Type* Ty)
373 printEscapedString(getCppName(Ty));
377 CppWriter::getCppName(const Value* val) {
379 ValueMap::iterator I = ValueNames.find(val);
380 if (I != ValueNames.end() && I->first == val)
383 if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(val)) {
384 name = std::string("gvar_") +
385 getTypePrefix(GV->getType()->getElementType());
386 } else if (isa<Function>(val)) {
387 name = std::string("func_");
388 } else if (const Constant* C = dyn_cast<Constant>(val)) {
389 name = std::string("const_") + getTypePrefix(C->getType());
390 } else if (const Argument* Arg = dyn_cast<Argument>(val)) {
392 unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
393 Function::const_arg_iterator(Arg)) + 1;
394 name = std::string("arg_") + utostr(argNum);
395 NameSet::iterator NI = UsedNames.find(name);
396 if (NI != UsedNames.end())
397 name += std::string("_") + utostr(uniqueNum++);
398 UsedNames.insert(name);
399 return ValueNames[val] = name;
401 name = getTypePrefix(val->getType());
404 name = getTypePrefix(val->getType());
406 name += (val->hasName() ? val->getName() : utostr(uniqueNum++));
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;
416 CppWriter::printCppName(const Value* val) {
417 printEscapedString(getCppName(val));
421 CppWriter::printTypeInternal(const Type* Ty) {
422 // We don't print definitions for primitive types
423 if (Ty->isPrimitiveType())
426 // If we already defined this type, we don't need to define it again.
427 if (DefinedTypes.find(Ty) != DefinedTypes.end())
430 // Everything below needs the name for the type so get it now.
431 std::string typeName(getCppName(Ty));
433 // Search the type stack for recursion. If we find it, then generate this
434 // as an OpaqueType, but make sure not to do this multiple times because
435 // the type could appear in multiple places on the stack. Once the opaque
436 // definition is issued, it must not be re-issued. Consequently we have to
437 // check the UnresolvedTypes list as well.
438 TypeList::const_iterator TI = std::find(TypeStack.begin(),TypeStack.end(),Ty);
439 if (TI != TypeStack.end()) {
440 TypeMap::const_iterator I = UnresolvedTypes.find(Ty);
441 if (I == UnresolvedTypes.end()) {
442 Out << "PATypeHolder " << typeName << "_fwd = OpaqueType::get();";
444 UnresolvedTypes[Ty] = typeName;
449 // We're going to print a derived type which, by definition, contains other
450 // types. So, push this one we're printing onto the type stack to assist with
451 // recursive definitions.
452 TypeStack.push_back(Ty);
454 // Print the type definition
455 switch (Ty->getTypeID()) {
456 case Type::FunctionTyID: {
457 const FunctionType* FT = cast<FunctionType>(Ty);
458 Out << "std::vector<const Type*>" << typeName << "_args;";
460 FunctionType::param_iterator PI = FT->param_begin();
461 FunctionType::param_iterator PE = FT->param_end();
462 for (; PI != PE; ++PI) {
463 const Type* argTy = static_cast<const Type*>(*PI);
464 bool isForward = printTypeInternal(argTy);
465 std::string argName(getCppName(argTy));
466 Out << typeName << "_args.push_back(" << argName;
472 bool isForward = printTypeInternal(FT->getReturnType());
473 std::string retTypeName(getCppName(FT->getReturnType()));
474 Out << "FunctionType* " << typeName << " = FunctionType::get(";
475 in(); nl(Out) << "/*Result=*/" << retTypeName;
479 nl(Out) << "/*Params=*/" << typeName << "_args,";
480 nl(Out) << "/*isVarArg=*/" << (FT->isVarArg() ? "true" : "false") << ");";
485 case Type::StructTyID: {
486 const StructType* ST = cast<StructType>(Ty);
487 Out << "std::vector<const Type*>" << typeName << "_fields;";
489 StructType::element_iterator EI = ST->element_begin();
490 StructType::element_iterator EE = ST->element_end();
491 for (; EI != EE; ++EI) {
492 const Type* fieldTy = static_cast<const Type*>(*EI);
493 bool isForward = printTypeInternal(fieldTy);
494 std::string fieldName(getCppName(fieldTy));
495 Out << typeName << "_fields.push_back(" << fieldName;
501 Out << "StructType* " << typeName << " = StructType::get("
502 << typeName << "_fields);";
506 case Type::ArrayTyID: {
507 const ArrayType* AT = cast<ArrayType>(Ty);
508 const Type* ET = AT->getElementType();
509 bool isForward = printTypeInternal(ET);
510 std::string elemName(getCppName(ET));
511 Out << "ArrayType* " << typeName << " = ArrayType::get("
512 << elemName << (isForward ? "_fwd" : "")
513 << ", " << utostr(AT->getNumElements()) << ");";
517 case Type::PointerTyID: {
518 const PointerType* PT = cast<PointerType>(Ty);
519 const Type* ET = PT->getElementType();
520 bool isForward = printTypeInternal(ET);
521 std::string elemName(getCppName(ET));
522 Out << "PointerType* " << typeName << " = PointerType::get("
523 << elemName << (isForward ? "_fwd" : "") << ");";
527 case Type::PackedTyID: {
528 const PackedType* PT = cast<PackedType>(Ty);
529 const Type* ET = PT->getElementType();
530 bool isForward = printTypeInternal(ET);
531 std::string elemName(getCppName(ET));
532 Out << "PackedType* " << typeName << " = PackedType::get("
533 << elemName << (isForward ? "_fwd" : "")
534 << ", " << utostr(PT->getNumElements()) << ");";
538 case Type::OpaqueTyID: {
539 Out << "OpaqueType* " << typeName << " = OpaqueType::get();";
544 error("Invalid TypeID");
547 // If the type had a name, make sure we recreate it.
548 const std::string* progTypeName =
549 findTypeName(TheModule->getSymbolTable(),Ty);
551 Out << "mod->addTypeName(\"" << *progTypeName << "\", "
555 // Pop us off the type stack
556 TypeStack.pop_back();
558 // Indicate that this type is now defined.
559 DefinedTypes.insert(Ty);
561 // Early resolve as many unresolved types as possible. Search the unresolved
562 // types map for the type we just printed. Now that its definition is complete
563 // we can resolve any previous references to it. This prevents a cascade of
565 TypeMap::iterator I = UnresolvedTypes.find(Ty);
566 if (I != UnresolvedTypes.end()) {
567 Out << "cast<OpaqueType>(" << I->second
568 << "_fwd.get())->refineAbstractTypeTo(" << I->second << ");";
570 Out << I->second << " = cast<";
571 switch (Ty->getTypeID()) {
572 case Type::FunctionTyID: Out << "FunctionType"; break;
573 case Type::ArrayTyID: Out << "ArrayType"; break;
574 case Type::StructTyID: Out << "StructType"; break;
575 case Type::PackedTyID: Out << "PackedType"; break;
576 case Type::PointerTyID: Out << "PointerType"; break;
577 case Type::OpaqueTyID: Out << "OpaqueType"; break;
578 default: Out << "NoSuchDerivedType"; break;
580 Out << ">(" << I->second << "_fwd.get());";
582 UnresolvedTypes.erase(I);
585 // Finally, separate the type definition from other with a newline.
588 // We weren't a recursive type
592 // Prints a type definition. Returns true if it could not resolve all the types
593 // in the definition but had to use a forward reference.
595 CppWriter::printType(const Type* Ty) {
596 assert(TypeStack.empty());
598 printTypeInternal(Ty);
599 assert(TypeStack.empty());
603 CppWriter::printTypes(const Module* M) {
605 // Walk the symbol table and print out all its types
606 const SymbolTable& symtab = M->getSymbolTable();
607 for (SymbolTable::type_const_iterator TI = symtab.type_begin(),
608 TE = symtab.type_end(); TI != TE; ++TI) {
610 // For primitive types and types already defined, just add a name
611 TypeMap::const_iterator TNI = TypeNames.find(TI->second);
612 if (TI->second->isPrimitiveType() || TNI != TypeNames.end()) {
613 Out << "mod->addTypeName(\"";
614 printEscapedString(TI->first);
615 Out << "\", " << getCppName(TI->second) << ");";
617 // For everything else, define the type
619 printType(TI->second);
623 // Add all of the global variables to the value table...
624 for (Module::const_global_iterator I = TheModule->global_begin(),
625 E = TheModule->global_end(); I != E; ++I) {
626 if (I->hasInitializer())
627 printType(I->getInitializer()->getType());
628 printType(I->getType());
631 // Add all the functions to the table
632 for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
634 printType(FI->getReturnType());
635 printType(FI->getFunctionType());
636 // Add all the function arguments
637 for(Function::const_arg_iterator AI = FI->arg_begin(),
638 AE = FI->arg_end(); AI != AE; ++AI) {
639 printType(AI->getType());
642 // Add all of the basic blocks and instructions
643 for (Function::const_iterator BB = FI->begin(),
644 E = FI->end(); BB != E; ++BB) {
645 printType(BB->getType());
646 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
648 printType(I->getType());
649 for (unsigned i = 0; i < I->getNumOperands(); ++i)
650 printType(I->getOperand(i)->getType());
657 // printConstant - Print out a constant pool entry...
658 void CppWriter::printConstant(const Constant *CV) {
659 // First, if the constant is actually a GlobalValue (variable or function) or
660 // its already in the constant list then we've printed it already and we can
662 if (isa<GlobalValue>(CV) || ValueNames.find(CV) != ValueNames.end())
665 std::string constName(getCppName(CV));
666 std::string typeName(getCppName(CV->getType()));
667 if (CV->isNullValue()) {
668 Out << "Constant* " << constName << " = Constant::getNullValue("
673 if (isa<GlobalValue>(CV)) {
674 // Skip variables and functions, we emit them elsewhere
677 if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
678 Out << "ConstantBool* " << constName << " = ConstantBool::get("
679 << (CB->getValue() ? "true" : "false") << ");";
680 } else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
681 Out << "ConstantInt* " << constName << " = ConstantInt::get("
683 << (CV->getType()->isSigned() ? CI->getSExtValue() : CI->getZExtValue())
685 } else if (isa<ConstantAggregateZero>(CV)) {
686 Out << "ConstantAggregateZero* " << constName
687 << " = ConstantAggregateZero::get(" << typeName << ");";
688 } else if (isa<ConstantPointerNull>(CV)) {
689 Out << "ConstantPointerNull* " << constName
690 << " = ConstanPointerNull::get(" << typeName << ");";
691 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
692 Out << "ConstantFP* " << constName << " = ";
695 } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
696 if (CA->isString() && CA->getType()->getElementType() == Type::SByteTy) {
697 Out << "Constant* " << constName << " = ConstantArray::get(\"";
698 printEscapedString(CA->getAsString());
699 // Determine if we want null termination or not.
700 if (CA->getType()->getNumElements() <= CA->getAsString().length())
701 Out << "\", false";// No null terminator
703 Out << "\", true"; // Indicate that the null terminator should be added.
706 Out << "std::vector<Constant*> " << constName << "_elems;";
708 unsigned N = CA->getNumOperands();
709 for (unsigned i = 0; i < N; ++i) {
710 printConstant(CA->getOperand(i)); // recurse to print operands
711 Out << constName << "_elems.push_back("
712 << getCppName(CA->getOperand(i)) << ");";
715 Out << "Constant* " << constName << " = ConstantArray::get("
716 << typeName << ", " << constName << "_elems);";
718 } else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
719 Out << "std::vector<Constant*> " << constName << "_fields;";
721 unsigned N = CS->getNumOperands();
722 for (unsigned i = 0; i < N; i++) {
723 printConstant(CS->getOperand(i));
724 Out << constName << "_fields.push_back("
725 << getCppName(CS->getOperand(i)) << ");";
728 Out << "Constant* " << constName << " = ConstantStruct::get("
729 << typeName << ", " << constName << "_fields);";
730 } else if (const ConstantPacked *CP = dyn_cast<ConstantPacked>(CV)) {
731 Out << "std::vector<Constant*> " << constName << "_elems;";
733 unsigned N = CP->getNumOperands();
734 for (unsigned i = 0; i < N; ++i) {
735 printConstant(CP->getOperand(i));
736 Out << constName << "_elems.push_back("
737 << getCppName(CP->getOperand(i)) << ");";
740 Out << "Constant* " << constName << " = ConstantPacked::get("
741 << typeName << ", " << constName << "_elems);";
742 } else if (isa<UndefValue>(CV)) {
743 Out << "UndefValue* " << constName << " = UndefValue::get("
745 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
746 if (CE->getOpcode() == Instruction::GetElementPtr) {
747 Out << "std::vector<Constant*> " << constName << "_indices;";
749 printConstant(CE->getOperand(0));
750 for (unsigned i = 1; i < CE->getNumOperands(); ++i ) {
751 printConstant(CE->getOperand(i));
752 Out << constName << "_indices.push_back("
753 << getCppName(CE->getOperand(i)) << ");";
756 Out << "Constant* " << constName
757 << " = ConstantExpr::getGetElementPtr("
758 << getCppName(CE->getOperand(0)) << ", "
759 << constName << "_indices);";
760 } else if (CE->getOpcode() == Instruction::Cast) {
761 printConstant(CE->getOperand(0));
762 Out << "Constant* " << constName << " = ConstantExpr::getCast(";
763 Out << getCppName(CE->getOperand(0)) << ", " << getCppName(CE->getType())
766 unsigned N = CE->getNumOperands();
767 for (unsigned i = 0; i < N; ++i ) {
768 printConstant(CE->getOperand(i));
770 Out << "Constant* " << constName << " = ConstantExpr::";
771 switch (CE->getOpcode()) {
772 case Instruction::Add: Out << "getAdd"; break;
773 case Instruction::Sub: Out << "getSub"; break;
774 case Instruction::Mul: Out << "getMul"; break;
775 case Instruction::UDiv: Out << "getUDiv"; break;
776 case Instruction::SDiv: Out << "getSDiv"; break;
777 case Instruction::FDiv: Out << "getFDiv"; break;
778 case Instruction::URem: Out << "getURem"; break;
779 case Instruction::SRem: Out << "getSRem"; break;
780 case Instruction::FRem: Out << "getFRem"; break;
781 case Instruction::And: Out << "getAnd"; break;
782 case Instruction::Or: Out << "getOr"; break;
783 case Instruction::Xor: Out << "getXor"; break;
784 case Instruction::SetEQ: Out << "getSetEQ"; break;
785 case Instruction::SetNE: Out << "getSetNE"; break;
786 case Instruction::SetLE: Out << "getSetLE"; break;
787 case Instruction::SetGE: Out << "getSetGE"; break;
788 case Instruction::SetLT: Out << "getSetLT"; break;
789 case Instruction::SetGT: Out << "getSetGT"; break;
790 case Instruction::Shl: Out << "getShl"; break;
791 case Instruction::Shr: Out << "getShr"; break;
792 case Instruction::Select: Out << "getSelect"; break;
793 case Instruction::ExtractElement: Out << "getExtractElement"; break;
794 case Instruction::InsertElement: Out << "getInsertElement"; break;
795 case Instruction::ShuffleVector: Out << "getShuffleVector"; break;
797 error("Invalid constant expression");
800 Out << getCppName(CE->getOperand(0));
801 for (unsigned i = 1; i < CE->getNumOperands(); ++i)
802 Out << ", " << getCppName(CE->getOperand(i));
806 error("Bad Constant");
807 Out << "Constant* " << constName << " = 0; ";
813 CppWriter::printConstants(const Module* M) {
814 // Traverse all the global variables looking for constant initializers
815 for (Module::const_global_iterator I = TheModule->global_begin(),
816 E = TheModule->global_end(); I != E; ++I)
817 if (I->hasInitializer())
818 printConstant(I->getInitializer());
820 // Traverse the LLVM functions looking for constants
821 for (Module::const_iterator FI = TheModule->begin(), FE = TheModule->end();
823 // Add all of the basic blocks and instructions
824 for (Function::const_iterator BB = FI->begin(),
825 E = FI->end(); BB != E; ++BB) {
826 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;
828 for (unsigned i = 0; i < I->getNumOperands(); ++i) {
829 if (Constant* C = dyn_cast<Constant>(I->getOperand(i))) {
838 void CppWriter::printVariableUses(const GlobalVariable *GV) {
839 nl(Out) << "// Type Definitions";
841 printType(GV->getType());
842 if (GV->hasInitializer()) {
843 Constant* Init = GV->getInitializer();
844 printType(Init->getType());
845 if (Function* F = dyn_cast<Function>(Init)) {
846 nl(Out)<< "/ Function Declarations"; nl(Out);
847 printFunctionHead(F);
848 } else if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
849 nl(Out) << "// Global Variable Declarations"; nl(Out);
850 printVariableHead(gv);
852 nl(Out) << "// Constant Definitions"; nl(Out);
855 if (GlobalVariable* gv = dyn_cast<GlobalVariable>(Init)) {
856 nl(Out) << "// Global Variable Definitions"; nl(Out);
857 printVariableBody(gv);
862 void CppWriter::printVariableHead(const GlobalVariable *GV) {
863 nl(Out) << "GlobalVariable* " << getCppName(GV);
865 Out << " = mod->getGlobalVariable(";
866 printEscapedString(GV->getName());
867 Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)";
868 nl(Out) << "if (!" << getCppName(GV) << ") {";
869 in(); nl(Out) << getCppName(GV);
871 Out << " = new GlobalVariable(";
872 nl(Out) << "/*Type=*/";
873 printCppName(GV->getType()->getElementType());
875 nl(Out) << "/*isConstant=*/" << (GV->isConstant()?"true":"false");
877 nl(Out) << "/*Linkage=*/";
878 printLinkageType(GV->getLinkage());
880 nl(Out) << "/*Initializer=*/0, ";
881 if (GV->hasInitializer()) {
882 Out << "// has initializer, specified below";
884 nl(Out) << "/*Name=*/\"";
885 printEscapedString(GV->getName());
890 if (GV->hasSection()) {
892 Out << "->setSection(\"";
893 printEscapedString(GV->getSection());
897 if (GV->getAlignment()) {
899 Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");";
903 out(); Out << "}"; nl(Out);
908 CppWriter::printVariableBody(const GlobalVariable *GV) {
909 if (GV->hasInitializer()) {
911 Out << "->setInitializer(";
912 //if (!isa<GlobalValue(GV->getInitializer()))
914 Out << getCppName(GV->getInitializer()) << ");";
920 CppWriter::getOpName(Value* V) {
921 if (!isa<Instruction>(V) || DefinedValues.find(V) != DefinedValues.end())
922 return getCppName(V);
924 // See if its alread in the map of forward references, if so just return the
925 // name we already set up for it
926 ForwardRefMap::const_iterator I = ForwardRefs.find(V);
927 if (I != ForwardRefs.end())
930 // This is a new forward reference. Generate a unique name for it
931 std::string result(std::string("fwdref_") + utostr(uniqueNum++));
933 // Yes, this is a hack. An Argument is the smallest instantiable value that
934 // we can make as a placeholder for the real value. We'll replace these
935 // Argument instances later.
936 Out << "Argument* " << result << " = new Argument("
937 << getCppName(V->getType()) << ");";
939 ForwardRefs[V] = result;
943 // printInstruction - This member is called for each Instruction in a function.
945 CppWriter::printInstruction(const Instruction *I, const std::string& bbname) {
946 std::string iName(getCppName(I));
948 // Before we emit this instruction, we need to take care of generating any
949 // forward references. So, we get the names of all the operands in advance
950 std::string* opNames = new std::string[I->getNumOperands()];
951 for (unsigned i = 0; i < I->getNumOperands(); i++) {
952 opNames[i] = getOpName(I->getOperand(i));
955 switch (I->getOpcode()) {
956 case Instruction::Ret: {
957 const ReturnInst* ret = cast<ReturnInst>(I);
958 Out << "ReturnInst* " << iName << " = new ReturnInst("
959 << (ret->getReturnValue() ? opNames[0] + ", " : "") << bbname << ");";
962 case Instruction::Br: {
963 const BranchInst* br = cast<BranchInst>(I);
964 Out << "BranchInst* " << iName << " = new BranchInst(" ;
965 if (br->getNumOperands() == 3 ) {
966 Out << opNames[0] << ", "
967 << opNames[1] << ", "
968 << opNames[2] << ", ";
970 } else if (br->getNumOperands() == 1) {
971 Out << opNames[0] << ", ";
973 error("Branch with 2 operands?");
975 Out << bbname << ");";
978 case Instruction::Switch: {
979 const SwitchInst* sw = cast<SwitchInst>(I);
980 Out << "SwitchInst* " << iName << " = new SwitchInst("
981 << opNames[0] << ", "
982 << opNames[1] << ", "
983 << sw->getNumCases() << ", " << bbname << ");";
985 for (unsigned i = 2; i < sw->getNumOperands(); i += 2 ) {
986 Out << iName << "->addCase("
987 << opNames[i] << ", "
988 << opNames[i+1] << ");";
993 case Instruction::Invoke: {
994 const InvokeInst* inv = cast<InvokeInst>(I);
995 Out << "std::vector<Value*> " << iName << "_params;";
997 for (unsigned i = 3; i < inv->getNumOperands(); ++i) {
998 Out << iName << "_params.push_back("
999 << opNames[i] << ");";
1002 Out << "InvokeInst* " << iName << " = new InvokeInst("
1003 << opNames[0] << ", "
1004 << opNames[1] << ", "
1005 << opNames[2] << ", "
1006 << iName << "_params, \"";
1007 printEscapedString(inv->getName());
1008 Out << "\", " << bbname << ");";
1009 nl(Out) << iName << "->setCallingConv(";
1010 printCallingConv(inv->getCallingConv());
1014 case Instruction::Unwind: {
1015 Out << "UnwindInst* " << iName << " = new UnwindInst("
1019 case Instruction::Unreachable:{
1020 Out << "UnreachableInst* " << iName << " = new UnreachableInst("
1024 case Instruction::Add:
1025 case Instruction::Sub:
1026 case Instruction::Mul:
1027 case Instruction::UDiv:
1028 case Instruction::SDiv:
1029 case Instruction::FDiv:
1030 case Instruction::URem:
1031 case Instruction::SRem:
1032 case Instruction::FRem:
1033 case Instruction::And:
1034 case Instruction::Or:
1035 case Instruction::Xor:
1036 case Instruction::Shl:
1037 case Instruction::Shr:{
1038 Out << "BinaryOperator* " << iName << " = BinaryOperator::create(";
1039 switch (I->getOpcode()) {
1040 case Instruction::Add: Out << "Instruction::Add"; break;
1041 case Instruction::Sub: Out << "Instruction::Sub"; break;
1042 case Instruction::Mul: Out << "Instruction::Mul"; break;
1043 case Instruction::UDiv:Out << "Instruction::UDiv"; break;
1044 case Instruction::SDiv:Out << "Instruction::SDiv"; break;
1045 case Instruction::FDiv:Out << "Instruction::FDiv"; break;
1046 case Instruction::URem:Out << "Instruction::URem"; break;
1047 case Instruction::SRem:Out << "Instruction::SRem"; break;
1048 case Instruction::FRem:Out << "Instruction::FRem"; break;
1049 case Instruction::And: Out << "Instruction::And"; break;
1050 case Instruction::Or: Out << "Instruction::Or"; break;
1051 case Instruction::Xor: Out << "Instruction::Xor"; break;
1052 case Instruction::Shl: Out << "Instruction::Shl"; break;
1053 case Instruction::Shr: Out << "Instruction::Shr"; break;
1054 default: Out << "Instruction::BadOpCode"; break;
1056 Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1057 printEscapedString(I->getName());
1058 Out << "\", " << bbname << ");";
1061 case Instruction::SetEQ:
1062 case Instruction::SetNE:
1063 case Instruction::SetLE:
1064 case Instruction::SetGE:
1065 case Instruction::SetLT:
1066 case Instruction::SetGT: {
1067 Out << "SetCondInst* " << iName << " = new SetCondInst(";
1068 switch (I->getOpcode()) {
1069 case Instruction::SetEQ: Out << "Instruction::SetEQ"; break;
1070 case Instruction::SetNE: Out << "Instruction::SetNE"; break;
1071 case Instruction::SetLE: Out << "Instruction::SetLE"; break;
1072 case Instruction::SetGE: Out << "Instruction::SetGE"; break;
1073 case Instruction::SetLT: Out << "Instruction::SetLT"; break;
1074 case Instruction::SetGT: Out << "Instruction::SetGT"; break;
1075 default: Out << "Instruction::BadOpCode"; break;
1077 Out << ", " << opNames[0] << ", " << opNames[1] << ", \"";
1078 printEscapedString(I->getName());
1079 Out << "\", " << bbname << ");";
1082 case Instruction::Malloc: {
1083 const MallocInst* mallocI = cast<MallocInst>(I);
1084 Out << "MallocInst* " << iName << " = new MallocInst("
1085 << getCppName(mallocI->getAllocatedType()) << ", ";
1086 if (mallocI->isArrayAllocation())
1087 Out << opNames[0] << ", " ;
1089 printEscapedString(mallocI->getName());
1090 Out << "\", " << bbname << ");";
1091 if (mallocI->getAlignment())
1092 nl(Out) << iName << "->setAlignment("
1093 << mallocI->getAlignment() << ");";
1096 case Instruction::Free: {
1097 Out << "FreeInst* " << iName << " = new FreeInst("
1098 << getCppName(I->getOperand(0)) << ", " << bbname << ");";
1101 case Instruction::Alloca: {
1102 const AllocaInst* allocaI = cast<AllocaInst>(I);
1103 Out << "AllocaInst* " << iName << " = new AllocaInst("
1104 << getCppName(allocaI->getAllocatedType()) << ", ";
1105 if (allocaI->isArrayAllocation())
1106 Out << opNames[0] << ", ";
1108 printEscapedString(allocaI->getName());
1109 Out << "\", " << bbname << ");";
1110 if (allocaI->getAlignment())
1111 nl(Out) << iName << "->setAlignment("
1112 << allocaI->getAlignment() << ");";
1115 case Instruction::Load:{
1116 const LoadInst* load = cast<LoadInst>(I);
1117 Out << "LoadInst* " << iName << " = new LoadInst("
1118 << opNames[0] << ", \"";
1119 printEscapedString(load->getName());
1120 Out << "\", " << (load->isVolatile() ? "true" : "false" )
1121 << ", " << bbname << ");";
1124 case Instruction::Store: {
1125 const StoreInst* store = cast<StoreInst>(I);
1126 Out << "StoreInst* " << iName << " = new StoreInst("
1127 << opNames[0] << ", "
1128 << opNames[1] << ", "
1129 << (store->isVolatile() ? "true" : "false")
1130 << ", " << bbname << ");";
1133 case Instruction::GetElementPtr: {
1134 const GetElementPtrInst* gep = cast<GetElementPtrInst>(I);
1135 if (gep->getNumOperands() <= 2) {
1136 Out << "GetElementPtrInst* " << iName << " = new GetElementPtrInst("
1138 if (gep->getNumOperands() == 2)
1139 Out << ", " << opNames[1];
1141 Out << "std::vector<Value*> " << iName << "_indices;";
1143 for (unsigned i = 1; i < gep->getNumOperands(); ++i ) {
1144 Out << iName << "_indices.push_back("
1145 << opNames[i] << ");";
1148 Out << "Instruction* " << iName << " = new GetElementPtrInst("
1149 << opNames[0] << ", " << iName << "_indices";
1152 printEscapedString(gep->getName());
1153 Out << "\", " << bbname << ");";
1156 case Instruction::PHI: {
1157 const PHINode* phi = cast<PHINode>(I);
1159 Out << "PHINode* " << iName << " = new PHINode("
1160 << getCppName(phi->getType()) << ", \"";
1161 printEscapedString(phi->getName());
1162 Out << "\", " << bbname << ");";
1163 nl(Out) << iName << "->reserveOperandSpace("
1164 << phi->getNumIncomingValues()
1167 for (unsigned i = 0; i < phi->getNumOperands(); i+=2) {
1168 Out << iName << "->addIncoming("
1169 << opNames[i] << ", " << opNames[i+1] << ");";
1174 case Instruction::Cast: {
1175 const CastInst* cst = cast<CastInst>(I);
1176 Out << "CastInst* " << iName << " = new CastInst("
1177 << opNames[0] << ", "
1178 << getCppName(cst->getType()) << ", \"";
1179 printEscapedString(cst->getName());
1180 Out << "\", " << bbname << ");";
1183 case Instruction::Call:{
1184 const CallInst* call = cast<CallInst>(I);
1185 if (InlineAsm* ila = dyn_cast<InlineAsm>(call->getOperand(0))) {
1186 Out << "InlineAsm* " << getCppName(ila) << " = InlineAsm::get("
1187 << getCppName(ila->getFunctionType()) << ", \""
1188 << ila->getAsmString() << "\", \""
1189 << ila->getConstraintString() << "\","
1190 << (ila->hasSideEffects() ? "true" : "false") << ");";
1193 if (call->getNumOperands() > 3) {
1194 Out << "std::vector<Value*> " << iName << "_params;";
1196 for (unsigned i = 1; i < call->getNumOperands(); ++i) {
1197 Out << iName << "_params.push_back(" << opNames[i] << ");";
1200 Out << "CallInst* " << iName << " = new CallInst("
1201 << opNames[0] << ", " << iName << "_params, \"";
1202 } else if (call->getNumOperands() == 3) {
1203 Out << "CallInst* " << iName << " = new CallInst("
1204 << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1205 } else if (call->getNumOperands() == 2) {
1206 Out << "CallInst* " << iName << " = new CallInst("
1207 << opNames[0] << ", " << opNames[1] << ", \"";
1209 Out << "CallInst* " << iName << " = new CallInst(" << opNames[0]
1212 printEscapedString(call->getName());
1213 Out << "\", " << bbname << ");";
1214 nl(Out) << iName << "->setCallingConv(";
1215 printCallingConv(call->getCallingConv());
1217 nl(Out) << iName << "->setTailCall("
1218 << (call->isTailCall() ? "true":"false");
1222 case Instruction::Select: {
1223 const SelectInst* sel = cast<SelectInst>(I);
1224 Out << "SelectInst* " << getCppName(sel) << " = new SelectInst(";
1225 Out << opNames[0] << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1226 printEscapedString(sel->getName());
1227 Out << "\", " << bbname << ");";
1230 case Instruction::UserOp1:
1232 case Instruction::UserOp2: {
1233 /// FIXME: What should be done here?
1236 case Instruction::VAArg: {
1237 const VAArgInst* va = cast<VAArgInst>(I);
1238 Out << "VAArgInst* " << getCppName(va) << " = new VAArgInst("
1239 << opNames[0] << ", " << getCppName(va->getType()) << ", \"";
1240 printEscapedString(va->getName());
1241 Out << "\", " << bbname << ");";
1244 case Instruction::ExtractElement: {
1245 const ExtractElementInst* eei = cast<ExtractElementInst>(I);
1246 Out << "ExtractElementInst* " << getCppName(eei)
1247 << " = new ExtractElementInst(" << opNames[0]
1248 << ", " << opNames[1] << ", \"";
1249 printEscapedString(eei->getName());
1250 Out << "\", " << bbname << ");";
1253 case Instruction::InsertElement: {
1254 const InsertElementInst* iei = cast<InsertElementInst>(I);
1255 Out << "InsertElementInst* " << getCppName(iei)
1256 << " = new InsertElementInst(" << opNames[0]
1257 << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1258 printEscapedString(iei->getName());
1259 Out << "\", " << bbname << ");";
1262 case Instruction::ShuffleVector: {
1263 const ShuffleVectorInst* svi = cast<ShuffleVectorInst>(I);
1264 Out << "ShuffleVectorInst* " << getCppName(svi)
1265 << " = new ShuffleVectorInst(" << opNames[0]
1266 << ", " << opNames[1] << ", " << opNames[2] << ", \"";
1267 printEscapedString(svi->getName());
1268 Out << "\", " << bbname << ");";
1272 DefinedValues.insert(I);
1277 // Print out the types, constants and declarations needed by one function
1278 void CppWriter::printFunctionUses(const Function* F) {
1280 nl(Out) << "// Type Definitions"; nl(Out);
1282 // Print the function's return type
1283 printType(F->getReturnType());
1285 // Print the function's function type
1286 printType(F->getFunctionType());
1288 // Print the types of each of the function's arguments
1289 for(Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1291 printType(AI->getType());
1295 // Print type definitions for every type referenced by an instruction and
1296 // make a note of any global values or constants that are referenced
1297 std::vector<GlobalValue*> gvs;
1298 std::vector<Constant*> consts;
1299 for (Function::const_iterator BB = F->begin(), BE = F->end(); BB != BE; ++BB){
1300 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
1302 // Print the type of the instruction itself
1303 printType(I->getType());
1305 // Print the type of each of the instruction's operands
1306 for (unsigned i = 0; i < I->getNumOperands(); ++i) {
1307 Value* operand = I->getOperand(i);
1308 printType(operand->getType());
1309 if (GlobalValue* GV = dyn_cast<GlobalValue>(operand))
1311 else if (Constant* C = dyn_cast<Constant>(operand))
1312 consts.push_back(C);
1317 // Print the function declarations for any functions encountered
1318 nl(Out) << "// Function Declarations"; nl(Out);
1319 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1321 if (Function* Fun = dyn_cast<Function>(*I)) {
1322 if (!is_inline || Fun != F)
1323 printFunctionHead(Fun);
1327 // Print the global variable declarations for any variables encountered
1328 nl(Out) << "// Global Variable Declarations"; nl(Out);
1329 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1331 if (GlobalVariable* F = dyn_cast<GlobalVariable>(*I))
1332 printVariableHead(F);
1335 // Print the constants found
1336 nl(Out) << "// Constant Definitions"; nl(Out);
1337 for (std::vector<Constant*>::iterator I = consts.begin(), E = consts.end();
1342 // Process the global variables definitions now that all the constants have
1343 // been emitted. These definitions just couple the gvars with their constant
1345 nl(Out) << "// Global Variable Definitions"; nl(Out);
1346 for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
1348 if (GlobalVariable* GV = dyn_cast<GlobalVariable>(*I))
1349 printVariableBody(GV);
1353 void CppWriter::printFunctionHead(const Function* F) {
1354 nl(Out) << "Function* " << getCppName(F);
1356 Out << " = mod->getFunction(\"";
1357 printEscapedString(F->getName());
1358 Out << "\", " << getCppName(F->getFunctionType()) << ");";
1359 nl(Out) << "if (!" << getCppName(F) << ") {";
1360 nl(Out) << getCppName(F);
1362 Out<< " = new Function(";
1363 nl(Out,1) << "/*Type=*/" << getCppName(F->getFunctionType()) << ",";
1364 nl(Out) << "/*Linkage=*/";
1365 printLinkageType(F->getLinkage());
1367 nl(Out) << "/*Name=*/\"";
1368 printEscapedString(F->getName());
1369 Out << "\", mod); " << (F->isExternal()? "// (external, no body)" : "");
1372 Out << "->setCallingConv(";
1373 printCallingConv(F->getCallingConv());
1376 if (F->hasSection()) {
1378 Out << "->setSection(\"" << F->getSection() << "\");";
1381 if (F->getAlignment()) {
1383 Out << "->setAlignment(" << F->getAlignment() << ");";
1392 void CppWriter::printFunctionBody(const Function *F) {
1393 if (F->isExternal())
1394 return; // external functions have no bodies.
1396 // Clear the DefinedValues and ForwardRefs maps because we can't have
1397 // cross-function forward refs
1398 ForwardRefs.clear();
1399 DefinedValues.clear();
1401 // Create all the argument values
1403 if (!F->arg_empty()) {
1404 Out << "Function::arg_iterator args = " << getCppName(F)
1405 << "->arg_begin();";
1408 for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1410 Out << "Value* " << getCppName(AI) << " = args++;";
1412 if (AI->hasName()) {
1413 Out << getCppName(AI) << "->setName(\"" << AI->getName() << "\");";
1419 // Create all the basic blocks
1421 for (Function::const_iterator BI = F->begin(), BE = F->end();
1423 std::string bbname(getCppName(BI));
1424 Out << "BasicBlock* " << bbname << " = new BasicBlock(\"";
1426 printEscapedString(BI->getName());
1427 Out << "\"," << getCppName(BI->getParent()) << ",0);";
1431 // Output all of its basic blocks... for the function
1432 for (Function::const_iterator BI = F->begin(), BE = F->end();
1434 std::string bbname(getCppName(BI));
1435 nl(Out) << "// Block " << BI->getName() << " (" << bbname << ")";
1438 // Output all of the instructions in the basic block...
1439 for (BasicBlock::const_iterator I = BI->begin(), E = BI->end();
1441 printInstruction(I,bbname);
1445 // Loop over the ForwardRefs and resolve them now that all instructions
1447 if (!ForwardRefs.empty()) {
1448 nl(Out) << "// Resolve Forward References";
1452 while (!ForwardRefs.empty()) {
1453 ForwardRefMap::iterator I = ForwardRefs.begin();
1454 Out << I->second << "->replaceAllUsesWith("
1455 << getCppName(I->first) << "); delete " << I->second << ";";
1457 ForwardRefs.erase(I);
1461 void CppWriter::printInline(const std::string& fname, const std::string& func) {
1462 const Function* F = TheModule->getNamedFunction(func);
1464 error(std::string("Function '") + func + "' not found in input module");
1467 if (F->isExternal()) {
1468 error(std::string("Function '") + func + "' is external!");
1471 nl(Out) << "BasicBlock* " << fname << "(Module* mod, Function *"
1473 unsigned arg_count = 1;
1474 for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
1476 Out << ", Value* arg_" << arg_count;
1481 printFunctionUses(F);
1482 printFunctionBody(F);
1484 Out << "return " << getCppName(F->begin()) << ";";
1489 void CppWriter::printModuleBody() {
1490 // Print out all the type definitions
1491 nl(Out) << "// Type Definitions"; nl(Out);
1492 printTypes(TheModule);
1494 // Functions can call each other and global variables can reference them so
1495 // define all the functions first before emitting their function bodies.
1496 nl(Out) << "// Function Declarations"; nl(Out);
1497 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1499 printFunctionHead(I);
1501 // Process the global variables declarations. We can't initialze them until
1502 // after the constants are printed so just print a header for each global
1503 nl(Out) << "// Global Variable Declarations\n"; nl(Out);
1504 for (Module::const_global_iterator I = TheModule->global_begin(),
1505 E = TheModule->global_end(); I != E; ++I) {
1506 printVariableHead(I);
1509 // Print out all the constants definitions. Constants don't recurse except
1510 // through GlobalValues. All GlobalValues have been declared at this point
1511 // so we can proceed to generate the constants.
1512 nl(Out) << "// Constant Definitions"; nl(Out);
1513 printConstants(TheModule);
1515 // Process the global variables definitions now that all the constants have
1516 // been emitted. These definitions just couple the gvars with their constant
1518 nl(Out) << "// Global Variable Definitions"; nl(Out);
1519 for (Module::const_global_iterator I = TheModule->global_begin(),
1520 E = TheModule->global_end(); I != E; ++I) {
1521 printVariableBody(I);
1524 // Finally, we can safely put out all of the function bodies.
1525 nl(Out) << "// Function Definitions"; nl(Out);
1526 for (Module::const_iterator I = TheModule->begin(), E = TheModule->end();
1528 if (!I->isExternal()) {
1529 nl(Out) << "// Function: " << I->getName() << " (" << getCppName(I)
1533 printFunctionBody(I);
1540 void CppWriter::printProgram(
1541 const std::string& fname,
1542 const std::string& mName
1544 Out << "#include <llvm/Module.h>\n";
1545 Out << "#include <llvm/DerivedTypes.h>\n";
1546 Out << "#include <llvm/Constants.h>\n";
1547 Out << "#include <llvm/GlobalVariable.h>\n";
1548 Out << "#include <llvm/Function.h>\n";
1549 Out << "#include <llvm/CallingConv.h>\n";
1550 Out << "#include <llvm/BasicBlock.h>\n";
1551 Out << "#include <llvm/Instructions.h>\n";
1552 Out << "#include <llvm/InlineAsm.h>\n";
1553 Out << "#include <llvm/Support/MathExtras.h>\n";
1554 Out << "#include <llvm/Pass.h>\n";
1555 Out << "#include <llvm/PassManager.h>\n";
1556 Out << "#include <llvm/Analysis/Verifier.h>\n";
1557 Out << "#include <llvm/Assembly/PrintModulePass.h>\n";
1558 Out << "#include <algorithm>\n";
1559 Out << "#include <iostream>\n\n";
1560 Out << "using namespace llvm;\n\n";
1561 Out << "Module* " << fname << "();\n\n";
1562 Out << "int main(int argc, char**argv) {\n";
1563 Out << " Module* Mod = makeLLVMModule();\n";
1564 Out << " verifyModule(*Mod, PrintMessageAction);\n";
1565 Out << " std::cerr.flush();\n";
1566 Out << " std::cout.flush();\n";
1567 Out << " PassManager PM;\n";
1568 Out << " PM.add(new PrintModulePass(&std::cout));\n";
1569 Out << " PM.run(*Mod);\n";
1570 Out << " return 0;\n";
1572 printModule(fname,mName);
1575 void CppWriter::printModule(
1576 const std::string& fname,
1577 const std::string& mName
1579 nl(Out) << "Module* " << fname << "() {";
1580 nl(Out,1) << "// Module Construction";
1581 nl(Out) << "Module* mod = new Module(\"" << mName << "\");";
1582 nl(Out) << "mod->setEndianness(";
1583 switch (TheModule->getEndianness()) {
1584 case Module::LittleEndian: Out << "Module::LittleEndian);"; break;
1585 case Module::BigEndian: Out << "Module::BigEndian);"; break;
1586 case Module::AnyEndianness:Out << "Module::AnyEndianness);"; break;
1588 nl(Out) << "mod->setPointerSize(";
1589 switch (TheModule->getPointerSize()) {
1590 case Module::Pointer32: Out << "Module::Pointer32);"; break;
1591 case Module::Pointer64: Out << "Module::Pointer64);"; break;
1592 case Module::AnyPointerSize: Out << "Module::AnyPointerSize);"; break;
1595 if (!TheModule->getTargetTriple().empty()) {
1596 Out << "mod->setTargetTriple(\"" << TheModule->getTargetTriple()
1601 if (!TheModule->getModuleInlineAsm().empty()) {
1602 Out << "mod->setModuleInlineAsm(\"";
1603 printEscapedString(TheModule->getModuleInlineAsm());
1608 // Loop over the dependent libraries and emit them.
1609 Module::lib_iterator LI = TheModule->lib_begin();
1610 Module::lib_iterator LE = TheModule->lib_end();
1612 Out << "mod->addLibrary(\"" << *LI << "\");";
1617 nl(Out) << "return mod;";
1622 void CppWriter::printContents(
1623 const std::string& fname, // Name of generated function
1624 const std::string& mName // Name of module generated module
1626 Out << "\nModule* " << fname << "(Module *mod) {\n";
1627 Out << "\nmod->setModuleIdentifier(\"" << mName << "\");\n";
1629 Out << "\nreturn mod;\n";
1633 void CppWriter::printFunction(
1634 const std::string& fname, // Name of generated function
1635 const std::string& funcName // Name of function to generate
1637 const Function* F = TheModule->getNamedFunction(funcName);
1639 error(std::string("Function '") + funcName + "' not found in input module");
1642 Out << "\nFunction* " << fname << "(Module *mod) {\n";
1643 printFunctionUses(F);
1644 printFunctionHead(F);
1645 printFunctionBody(F);
1646 Out << "return " << getCppName(F) << ";\n";
1650 void CppWriter::printVariable(
1651 const std::string& fname, /// Name of generated function
1652 const std::string& varName // Name of variable to generate
1654 const GlobalVariable* GV = TheModule->getNamedGlobal(varName);
1657 error(std::string("Variable '") + varName + "' not found in input module");
1660 Out << "\nGlobalVariable* " << fname << "(Module *mod) {\n";
1661 printVariableUses(GV);
1662 printVariableHead(GV);
1663 printVariableBody(GV);
1664 Out << "return " << getCppName(GV) << ";\n";
1668 void CppWriter::printType(
1669 const std::string& fname, /// Name of generated function
1670 const std::string& typeName // Name of type to generate
1672 const Type* Ty = TheModule->getTypeByName(typeName);
1674 error(std::string("Type '") + typeName + "' not found in input module");
1677 Out << "\nType* " << fname << "(Module *mod) {\n";
1679 Out << "return " << getCppName(Ty) << ";\n";
1683 } // end anonymous llvm
1687 void WriteModuleToCppFile(Module* mod, std::ostream& o) {
1688 // Initialize a CppWriter for us to use
1689 CppWriter W(o, mod);
1692 o << "// Generated by llvm2cpp - DO NOT MODIFY!\n\n";
1694 // Get the name of the function we're supposed to generate
1695 std::string fname = FuncName.getValue();
1697 // Get the name of the thing we are to generate
1698 std::string tgtname = NameToGenerate.getValue();
1699 if (GenerationType == GenModule ||
1700 GenerationType == GenContents ||
1701 GenerationType == GenProgram) {
1702 if (tgtname == "!bad!") {
1703 if (mod->getModuleIdentifier() == "-")
1704 tgtname = "<stdin>";
1706 tgtname = mod->getModuleIdentifier();
1708 } else if (tgtname == "!bad!") {
1709 W.error("You must use the -for option with -gen-{function,variable,type}");
1712 switch (WhatToGenerate(GenerationType)) {
1715 fname = "makeLLVMModule";
1716 W.printProgram(fname,tgtname);
1720 fname = "makeLLVMModule";
1721 W.printModule(fname,tgtname);
1725 fname = "makeLLVMModuleContents";
1726 W.printContents(fname,tgtname);
1730 fname = "makeLLVMFunction";
1731 W.printFunction(fname,tgtname);
1735 fname = "makeLLVMInline";
1736 W.printInline(fname,tgtname);
1740 fname = "makeLLVMVariable";
1741 W.printVariable(fname,tgtname);
1745 fname = "makeLLVMType";
1746 W.printType(fname,tgtname);
1749 W.error("Invalid generation option");