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-rw-r--r--lib/Target/CBackend/CBackend.cpp1415
1 files changed, 1415 insertions, 0 deletions
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
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index 0000000000..02d470cf3f
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+++ b/lib/Target/CBackend/CBackend.cpp
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+//===-- Writer.cpp - Library for writing C files -----------------*- C++ -*--=//
+//
+// This library implements the functionality defined in llvm/Assembly/CWriter.h
+// and CLocalVars.h
+//
+// TODO : Recursive types.
+//===-----------------------------------------------------------------------==//
+#include "llvm/Assembly/CWriter.h"
+#include "CLocalVars.h"
+#include "llvm/SlotCalculator.h"
+#include "llvm/Module.h"
+#include "llvm/Argument.h"
+#include "llvm/Function.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Constants.h"
+#include "llvm/GlobalVariable.h"
+#include "llvm/BasicBlock.h"
+#include "llvm/iMemory.h"
+#include "llvm/iTerminators.h"
+#include "llvm/iPHINode.h"
+#include "llvm/iOther.h"
+#include "llvm/SymbolTable.h"
+#include "llvm/Support/InstVisitor.h"
+#include "Support/StringExtras.h"
+#include "Support/STLExtras.h"
+
+#include <algorithm>
+#include <strstream>
+using std::string;
+using std::map;
+using std::vector;
+using std::ostream;
+
+/* Implementation of the CLocalVars methods */
+
+// Appends a variable to the LocalVars map if it does not already exist
+// Also check that the type exists on the map.
+void CLocalVars::addLocalVar(const Type *t, const string & var) {
+ if (!LocalVars.count(t) ||
+ find(LocalVars[t].begin(), LocalVars[t].end(), var)
+ == LocalVars[t].end()) {
+ LocalVars[t].push_back(var);
+ }
+}
+
+/* Writer.cpp */
+static string calcTypeNameVar(const Type *Ty, vector<const Type *> &TypeStack,
+ map<const Type *, string> &TypeNames,
+ string VariableName, string NameSoFar);
+
+static std::string getConstStrValue(const Constant* CPV);
+
+
+//
+//Getting opcodes in terms of the operator
+//
+static const char *getOpcodeOperName(const Instruction *I) {
+ switch (I->getOpcode()) {
+ // Standard binary operators...
+ case Instruction::Add: return "+";
+ case Instruction::Sub: return "-";
+ case Instruction::Mul: return "*";
+ case Instruction::Div: return "/";
+ case Instruction::Rem: return "%";
+
+ // Logical operators...
+ case Instruction::And: return "&";
+ case Instruction::Or: return "|";
+ case Instruction::Xor: return "^";
+
+ // SetCond operators...
+ case Instruction::SetEQ: return "==";
+ case Instruction::SetNE: return "!=";
+ case Instruction::SetLE: return "<=";
+ case Instruction::SetGE: return ">=";
+ case Instruction::SetLT: return "<";
+ case Instruction::SetGT: return ">";
+
+ //ShiftInstruction...
+
+ case Instruction::Shl : return "<<";
+ case Instruction::Shr : return ">>";
+
+ default:
+ cerr << "Invalid operator type!" << I->getOpcode() << "\n";
+ abort();
+ }
+ return 0;
+}
+
+
+// We dont want identifier names with ., space, - in them.
+// So we replace them with _
+static string makeNameProper(string x) {
+ string tmp;
+ for (string::iterator sI = x.begin(), sEnd = x.end(); sI != sEnd; sI++) {
+ if (*sI == '.')
+ tmp += '_';
+ else if (*sI == ' ')
+ tmp += '_';
+ else if (*sI == '-')
+ tmp += "__";
+ else
+ tmp += *sI;
+ }
+ return tmp;
+}
+
+static string getConstantName(const Constant *CPV) {
+ return CPV->getName();
+}
+
+
+static std::string getConstArrayStrValue(const Constant* CPV) {
+ std::string Result;
+
+ // As a special case, print the array as a string if it is an array of
+ // ubytes or an array of sbytes with positive values.
+ //
+ const Type *ETy = cast<ArrayType>(CPV->getType())->getElementType();
+ bool isString = (ETy == Type::SByteTy || ETy == Type::UByteTy);
+
+ if (ETy == Type::SByteTy) {
+ for (unsigned i = 0; i < CPV->getNumOperands(); ++i)
+ if (ETy == Type::SByteTy &&
+ cast<ConstantSInt>(CPV->getOperand(i))->getValue() < 0) {
+ isString = false;
+ break;
+ }
+ }
+
+ if (isString) {
+ Result = "\"";
+ for (unsigned i = 0; i < CPV->getNumOperands(); ++i) {
+ unsigned char C = (ETy == Type::SByteTy) ?
+ (unsigned char)cast<ConstantSInt>(CPV->getOperand(i))->getValue() :
+ (unsigned char)cast<ConstantUInt>(CPV->getOperand(i))->getValue();
+
+ if (isprint(C)) {
+ Result += C;
+ } else {
+ Result += '\\';
+ Result += 'x';
+ Result += ( C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A');
+ Result += ((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A');
+ }
+ }
+ Result += "\"";
+
+ } else {
+ Result = "{";
+ if (CPV->getNumOperands()) {
+ Result += " " + getConstStrValue(cast<Constant>(CPV->getOperand(0)));
+ for (unsigned i = 1; i < CPV->getNumOperands(); i++)
+ Result += ", " + getConstStrValue(cast<Constant>(CPV->getOperand(i)));
+ }
+ Result += " }";
+ }
+
+ return Result;
+}
+
+static std::string getConstStructStrValue(const Constant* CPV) {
+ std::string Result = "{";
+ if (CPV->getNumOperands()) {
+ Result += " " + getConstStrValue(cast<Constant>(CPV->getOperand(0)));
+ for (unsigned i = 1; i < CPV->getNumOperands(); i++)
+ Result += ", " + getConstStrValue(cast<Constant>(CPV->getOperand(i)));
+ }
+
+ return Result + " }";
+}
+
+// our own getStrValue function for constant initializers
+static std::string getConstStrValue(const Constant* CPV) {
+ // Does not handle null pointers, that needs to be checked explicitly
+ string tempstr;
+ if (CPV == ConstantBool::False)
+ return "0";
+ else if (CPV == ConstantBool::True)
+ return "1";
+
+ else if (isa<ConstantArray>(CPV)) {
+ tempstr = getConstArrayStrValue(CPV);
+ }
+ else if (isa<ConstantStruct>(CPV)) {
+ tempstr = getConstStructStrValue(CPV);
+ }
+ else if (ConstantUInt *CUI = dyn_cast<ConstantUInt>(CPV)) {
+ tempstr = utostr((long long unsigned int) CUI->getValue());
+ }
+ else if (ConstantSInt *CSI = dyn_cast<ConstantSInt>(CPV)) {
+ tempstr = itostr(CSI->getValue());
+ }
+ else if (ConstantFP *CFP = dyn_cast<ConstantFP>(CPV)) {
+ tempstr = ftostr(CFP->getValue());
+ }
+
+ if (CPV->getType() == Type::ULongTy)
+ tempstr += "ull";
+ else if (CPV->getType() == Type::LongTy)
+ tempstr += "ll";
+ else if (CPV->getType() == Type::UIntTy ||
+ CPV->getType() == Type::UShortTy)
+ tempstr += "u";
+
+ return tempstr;
+
+}
+
+// WriteCOperand - Write the name of the specified value out to the specified
+// ostream. This can be useful when you just want to print int %0 not the
+// whole instruction that generated it.
+//
+static void WriteCOperandInternal(ostream &Out, const Value *V,
+ bool PrintName, SlotCalculator *Table,
+ string &OperandType) {
+ int Slot;
+ if (PrintName && V->hasName()) {
+ // If V has a name.
+ Out << "llvm__" << makeNameProper(V->getName()) << "_" <<
+ (V->getType())->getUniqueID();
+ return;
+ }
+ else if (const Constant *CPV = dyn_cast<const Constant>(V)) {
+ if (isa<ConstantPointerNull>(CPV)) {
+ Out << "(" << OperandType << ")0";
+ }
+ else
+ Out << getConstStrValue(CPV);
+ }
+ else {
+ Slot = Table->getValSlot(V);
+ if (Slot >= 0)
+ Out << "llvm__tmp_" << Slot << "_" << V->getType()->getUniqueID();
+ else if (PrintName)
+ Out << "<badref>";
+ }
+}
+
+// Internal function
+// Essentially pass the Type* variable, an empty typestack and this prints
+// out the C type
+static string calcTypeName(const Type *Ty, vector<const Type *> &TypeStack,
+ map<const Type *, string> &TypeNames,
+ string *FunctionInfo) {
+
+ // Takin' care of the fact that boolean would be int in C
+ // and that ushort would be unsigned short etc.
+
+ // Base Case
+ if (Ty->isPrimitiveType())
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ return "int";
+ break;
+ case Type::UByteTyID:
+ return "unsigned char";
+ break;
+ case Type::SByteTyID:
+ return "signed char";
+ break;
+ case Type::UShortTyID:
+ return "unsigned long long";
+ break;
+ case Type::ULongTyID:
+ return "unsigned long long";
+ break;
+ case Type::LongTyID:
+ return "signed long long";
+ break;
+ case Type::UIntTyID:
+ return "unsigned int";
+ break;
+ default :
+ return Ty->getDescription();
+ }
+
+ // Check to see if the type is named.
+ map<const Type *, string>::iterator I = TypeNames.find(Ty);
+ if (I != TypeNames.end())
+ return I->second;
+
+ // Check to see if the Type is already on the stack...
+ unsigned Slot = 0, CurSize = TypeStack.size();
+ while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
+
+ // This is another base case for the recursion. In this case, we know
+ // that we have looped back to a type that we have previously visited.
+ // Generate the appropriate upreference to handle this.
+ //
+ if (Slot < CurSize)
+ return "\\" + utostr(CurSize-Slot); // Here's the upreference
+
+ TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
+
+ string Result;
+ string MInfo = "";
+ switch (Ty->getPrimitiveID()) {
+ case Type::FunctionTyID: {
+ const FunctionType *MTy = cast<const FunctionType>(Ty);
+ Result = calcTypeName(MTy->getReturnType(), TypeStack, TypeNames, &MInfo);
+ if (MInfo != "")
+ Result += ") " + MInfo;
+ Result += "(";
+ *FunctionInfo += " (";
+ for (FunctionType::ParamTypes::const_iterator
+ I = MTy->getParamTypes().begin(),
+ E = MTy->getParamTypes().end(); I != E; ++I) {
+ if (I != MTy->getParamTypes().begin())
+ *FunctionInfo += ", ";
+ MInfo = "";
+ *FunctionInfo += calcTypeName(*I, TypeStack, TypeNames, &MInfo);
+ if (MInfo != "")
+ Result += ") " + MInfo;
+ }
+ if (MTy->isVarArg()) {
+ if (!MTy->getParamTypes().empty())
+ *FunctionInfo += ", ";
+ *FunctionInfo += "...";
+ }
+ *FunctionInfo += ")";
+ break;
+ }
+ case Type::StructTyID: {
+ string tempstr = "";
+ const StructType *STy = cast<const StructType>(Ty);
+ Result = " struct {\n ";
+ int indx = 0;
+ for (StructType::ElementTypes::const_iterator
+ I = STy->getElementTypes().begin(),
+ E = STy->getElementTypes().end(); I != E; ++I) {
+ Result += calcTypeNameVar(*I, TypeStack, TypeNames,
+ "field" + itostr(indx++), tempstr);
+ Result += ";\n ";
+ }
+ Result += " } ";
+ break;
+ }
+ case Type::PointerTyID:
+ Result = calcTypeName(cast<const PointerType>(Ty)->getElementType(),
+ TypeStack, TypeNames, &MInfo);
+ Result += "*";
+ break;
+ case Type::ArrayTyID: {
+ const ArrayType *ATy = cast<const ArrayType>(Ty);
+ int NumElements = ATy->getNumElements();
+ Result = calcTypeName(ATy->getElementType(), TypeStack, TypeNames, &MInfo);
+ Result += "*";
+ break;
+ }
+ default:
+ assert(0 && "Unhandled case in getTypeProps!");
+ Result = "<error>";
+ }
+
+ TypeStack.pop_back(); // Remove self from stack...
+ return Result;
+}
+
+// Internal function
+// Pass the Type* variable and and the variable name and this prints out the
+// variable declaration.
+// This is different from calcTypeName because if you need to declare an array
+// the size of the array would appear after the variable name itself
+// For eg. int a[10];
+static string calcTypeNameVar(const Type *Ty, vector<const Type *> &TypeStack,
+ map<const Type *, string> &TypeNames,
+ string VariableName, string NameSoFar) {
+ if (Ty->isPrimitiveType())
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ return "int " + NameSoFar + VariableName;
+ break;
+ case Type::UByteTyID:
+ return "unsigned char " + NameSoFar + VariableName;
+ break;
+ case Type::SByteTyID:
+ return "signed char " + NameSoFar + VariableName;
+ break;
+ case Type::UShortTyID:
+ return "unsigned long long " + NameSoFar + VariableName;
+ break;
+ case Type::ULongTyID:
+ return "unsigned long long " + NameSoFar + VariableName;
+ break;
+ case Type::LongTyID:
+ return "signed long long " + NameSoFar + VariableName;
+ break;
+ case Type::UIntTyID:
+ return "unsigned int " + NameSoFar + VariableName;
+ break;
+ default :
+ return Ty->getDescription() + " " + NameSoFar + VariableName;
+ }
+
+ // Check to see if the type is named.
+ map<const Type *, string>::iterator I = TypeNames.find(Ty);
+ if (I != TypeNames.end())
+ return I->second + " " + NameSoFar + VariableName;
+
+ // Check to see if the Type is already on the stack...
+ unsigned Slot = 0, CurSize = TypeStack.size();
+ while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
+
+ if (Slot < CurSize)
+ return "\\" + utostr(CurSize-Slot) + " " + NameSoFar + VariableName;
+ // Here's the upreference
+
+ TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
+
+ string Result;
+ string tempstr = "";
+
+ switch (Ty->getPrimitiveID()) {
+ case Type::FunctionTyID: {
+ string MInfo = "";
+ const FunctionType *MTy = cast<const FunctionType>(Ty);
+ Result += calcTypeName(MTy->getReturnType(), TypeStack, TypeNames, &MInfo);
+ if (MInfo != "")
+ Result += ") " + MInfo;
+ Result += " " + NameSoFar + VariableName;
+ Result += " (";
+ for (FunctionType::ParamTypes::const_iterator
+ I = MTy->getParamTypes().begin(),
+ E = MTy->getParamTypes().end(); I != E; ++I) {
+ if (I != MTy->getParamTypes().begin())
+ Result += ", ";
+ MInfo = "";
+ Result += calcTypeName(*I, TypeStack, TypeNames, &MInfo);
+ if (MInfo != "")
+ Result += ") " + MInfo;
+ }
+ if (MTy->isVarArg()) {
+ if (!MTy->getParamTypes().empty())
+ Result += ", ";
+ Result += "...";
+ }
+ Result += ")";
+ break;
+ }
+ case Type::StructTyID: {
+ const StructType *STy = cast<const StructType>(Ty);
+ Result = " struct {\n ";
+ int indx = 0;
+ for (StructType::ElementTypes::const_iterator
+ I = STy->getElementTypes().begin(),
+ E = STy->getElementTypes().end(); I != E; ++I) {
+ Result += calcTypeNameVar(*I, TypeStack, TypeNames,
+ "field" + itostr(indx++), "");
+ Result += ";\n ";
+ }
+ Result += " }";
+ Result += " " + NameSoFar + VariableName;
+ break;
+ }
+
+ case Type::PointerTyID: {
+ Result = calcTypeNameVar(cast<const PointerType>(Ty)->getElementType(),
+ TypeStack, TypeNames, tempstr,
+ "(*" + NameSoFar + VariableName + ")");
+ break;
+ }
+
+ case Type::ArrayTyID: {
+ const ArrayType *ATy = cast<const ArrayType>(Ty);
+ int NumElements = ATy->getNumElements();
+ Result = calcTypeNameVar(ATy->getElementType(), TypeStack, TypeNames,
+ tempstr, NameSoFar + VariableName + "[" +
+ itostr(NumElements) + "]");
+ break;
+ }
+ default:
+ assert(0 && "Unhandled case in getTypeProps!");
+ Result = "<error>";
+ }
+
+ TypeStack.pop_back(); // Remove self from stack...
+ return Result;
+}
+
+// printTypeVarInt - The internal guts of printing out a type that has a
+// potentially named portion and the variable associated with the type.
+static ostream &printTypeVarInt(ostream &Out, const Type *Ty,
+ map<const Type *, string> &TypeNames,
+ string VariableName) {
+ // Primitive types always print out their description, regardless of whether
+ // they have been named or not.
+
+ // Booleans have to be specially handled to be printed as ints with values
+ // 0 or 1;
+ if (Ty->isPrimitiveType())
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ return Out << "int " << VariableName;
+ break;
+ case Type::UByteTyID:
+ return Out << "unsigned char " << VariableName;
+ break;
+ case Type::SByteTyID:
+ return Out << "signed char " << VariableName;
+ break;
+ case Type::UShortTyID:
+ return Out << "unsigned long long " << VariableName;
+ break;
+ case Type::ULongTyID:
+ return Out << "unsigned long long " << VariableName;
+ break;
+ case Type::LongTyID:
+ return Out << "signed long long " << VariableName;
+ break;
+ case Type::UIntTyID:
+ return Out << "unsigned int " << VariableName;
+ break;
+ default :
+ return Out << Ty->getDescription() << " " << VariableName;
+ }
+
+ // Check to see if the type is named.
+ map<const Type *, string>::iterator I = TypeNames.find(Ty);
+ if (I != TypeNames.end()) return Out << I->second << " " << VariableName;
+
+ // Otherwise we have a type that has not been named but is a derived type.
+ // Carefully recurse the type hierarchy to print out any contained symbolic
+ // names.
+ //
+ vector<const Type *> TypeStack;
+ string TypeNameVar, tempstr = "";
+ TypeNameVar = calcTypeNameVar(Ty, TypeStack, TypeNames, VariableName,
+ tempstr);
+ return Out << TypeNameVar;
+ // TODO: Check what happens to caching
+ // TypeNames.insert(std::make_pair(Ty, TypeName));
+ //Cache type name for later use
+}
+
+// Internal guts of printing a type name
+static ostream &printTypeInt(ostream &Out, const Type *Ty,
+ map<const Type *, string> &TypeNames) {
+ // Primitive types always print out their description, regardless of whether
+ // they have been named or not.
+
+ // Booleans have to be specially handled to be printed as ints with values
+ // 0 or 1;
+
+ if (Ty->isPrimitiveType())
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ return Out << "int";
+ break;
+ case Type::UByteTyID:
+ return Out << "unsigned char";
+ break;
+ case Type::SByteTyID:
+ return Out << "signed char";
+ break;
+ case Type::UShortTyID:
+ return Out << "unsigned long long";
+ break;
+ case Type::ULongTyID:
+ return Out << "unsigned long long";
+ break;
+ case Type::LongTyID:
+ return Out << "signed long long";
+ break;
+ case Type::UIntTyID:
+ return Out << "unsigned int";
+ break;
+ default :
+ return Out << Ty->getDescription();
+ }
+
+ // Check to see if the type is named.
+ map<const Type *, string>::iterator I = TypeNames.find(Ty);
+ if (I != TypeNames.end()) return Out << I->second;
+
+ // Otherwise we have a type that has not been named but is a derived type.
+ // Carefully recurse the type hierarchy to print out any contained symbolic
+ // names.
+ //
+ vector<const Type *> TypeStack;
+ string MInfo = "";
+ string TypeName = calcTypeName(Ty, TypeStack, TypeNames, &MInfo);
+ // TypeNames.insert(std::make_pair(Ty, TypeName));
+ //Cache type name for later use
+ if (MInfo != "")
+ return Out << TypeName << ")" << MInfo;
+ else
+ return Out << TypeName;
+}
+
+namespace {
+
+ //Internal CWriter class mimics AssemblyWriter.
+ class CWriter {
+ ostream& Out;
+ SlotCalculator &Table;
+ const Module *TheModule;
+ map<const Type *, string> TypeNames;
+ public:
+ inline CWriter(ostream &o, SlotCalculator &Tab, const Module *M)
+ : Out(o), Table(Tab), TheModule(M) {
+
+ }
+
+ inline void write(const Module *M) { printModule(M); }
+
+ ostream& printTypeVar(const Type *Ty, string VariableName, ostream &Out);
+ ostream& printType(const Type *Ty, ostream &Out);
+ void writeOperand(const Value *Operand, bool PrintType,ostream &Out,
+ bool PrintName = true);
+
+ private :
+ void printModule(const Module *M);
+ void printSymbolTable(const SymbolTable &ST);
+ void printConstant(const Constant *CPV);
+ void printGlobal(const GlobalVariable *GV);
+ void printFunctionDecl(const Function *M); //for printing just the method
+ // declaration
+ void printFunctionArgument(const Argument *MA);
+
+ void printFunction(const Function *);
+
+ void outputFunction(const Function *, CLocalVars &);
+ void outputBasicBlock(const BasicBlock *);
+ };
+ /* END class CWriter */
+
+
+ /* CLASS InstLocalVarsVisitor */
+ class InstLocalVarsVisitor : public InstVisitor<InstLocalVarsVisitor> {
+ SlotCalculator& Table;
+
+ void handleTerminator(TerminatorInst *tI,int indx);
+
+ public:
+ CLocalVars CLV;
+
+ InstLocalVarsVisitor(SlotCalculator& table) : Table(table) {
+
+ }
+
+ void visitInstruction(Instruction *I) {
+ string tempostr;
+ if (I && I->hasName() && !isa<PHINode>(I)) {
+ tempostr = "llvm__" + makeNameProper(I->getName()) + "_" +
+ itostr((int)I->getType()->getUniqueID());
+ CLV.addLocalVar(I->getType(), tempostr);
+ } else if (I) {
+ int Slot = Table.getValSlot(I);
+ //if (Slot < 0) then it is a instruction with no
+ // value (like return void )
+ if ((Slot >= 0) && !isa<PHINode>(I)) {
+ tempostr = "llvm__tmp_";
+ tempostr += itostr(Slot) + "_" +
+ itostr((int)I->getType()->getUniqueID());
+ CLV.addLocalVar(I->getType(), tempostr);
+ }
+ }
+
+ }
+
+ void visitBranchInst(BranchInst *I) {
+ TerminatorInst *tI = cast<TerminatorInst>(I);
+ if (I->getNumOperands() > 1) {
+ handleTerminator(tI, 0);
+ handleTerminator(tI, 1);
+ }
+ else {
+ handleTerminator(tI, 0);
+ }
+ }
+
+ };
+
+
+ /* CLASS CInstPrintVisitor */
+
+ class CInstPrintVisitor: public InstVisitor<CInstPrintVisitor> {
+ CWriter& CW;
+ SlotCalculator& Table;
+ ostream &Out;
+ const Value *Operand;
+
+ void outputLValue(Instruction *);
+ void printPhiFromNextBlock(TerminatorInst *tI, int indx);
+
+ public:
+ CInstPrintVisitor (CWriter &cw, SlotCalculator& table, ostream& o)
+ : CW(cw), Table(table), Out(o) {
+
+ }
+
+ void visitCastInst(CastInst *I);
+ void visitCallInst(CallInst *I);
+ void visitShr(ShiftInst *I);
+ void visitShl(ShiftInst *I);
+ void visitReturnInst(ReturnInst *I);
+ void visitBranchInst(BranchInst *I);
+ void visitSwitchInst(SwitchInst *I);
+ void visitInvokeInst(InvokeInst *I) ;
+ void visitMallocInst(MallocInst *I);
+ void visitAllocaInst(AllocaInst *I);
+ void visitFreeInst(FreeInst *I);
+ void visitLoadInst(LoadInst *I);
+ void visitStoreInst(StoreInst *I);
+ void visitGetElementPtrInst(GetElementPtrInst *I);
+ void visitPHINode(PHINode *I);
+ void visitUnaryOperator (UnaryOperator *I);
+ void visitBinaryOperator(BinaryOperator *I);
+
+ };
+
+}
+
+void InstLocalVarsVisitor::handleTerminator(TerminatorInst *tI,int indx) {
+ BasicBlock *bb = tI->getSuccessor(indx);
+ BasicBlock::const_iterator insIt = bb->begin();
+ while (insIt != bb->end()) {
+ if (const PHINode *pI = dyn_cast<const PHINode>(*insIt)) {
+ //Its a phinode!
+ //Calculate the incoming index for this
+ int incindex = pI->getBasicBlockIndex(tI->getParent());
+ if (incindex != -1)
+ if (pI && pI->hasName()) {
+ string tempostr;
+ tempostr = "llvm__" + makeNameProper(pI->getName()) + "_" +
+ itostr((int)pI->getType()->getUniqueID());
+ CLV.addLocalVar(pI->getType(), tempostr) ;
+ } else {
+ string tempostr;
+ int Slot = Table.getValSlot(pI);
+ if (Slot >= 0) {
+ tempostr = "llvm__tmp_" + itostr(Slot) + "_"
+ + itostr((int)pI->getType()->getUniqueID());
+ CLV.addLocalVar(pI->getType(), tempostr);
+ }
+ }
+
+ }
+ else break;
+ insIt++;
+ }
+}
+
+/* Implementation of CInstPrintVisitor */
+
+void CInstPrintVisitor::outputLValue(Instruction *I) {
+ if (I && I->hasName() && !isa<PHINode>(I)) {
+ Out << "llvm__" << makeNameProper(I->getName()) << "_"
+ << I->getType()->getUniqueID() << " = ";
+ } else {
+ int Slot = Table.getValSlot(I);
+ //if (Slot < 0) then it is a instruction with no value (like return void )
+ if ((Slot >= 0) && !isa<PHINode>(I))
+ Out << "llvm__tmp_" << Slot << "_" << I->getType()->getUniqueID()
+ << " = ";
+ }
+}
+
+void CInstPrintVisitor::printPhiFromNextBlock(TerminatorInst *tI, int indx) {
+ BasicBlock *bb = tI->getSuccessor(indx);
+ BasicBlock::const_iterator insIt = bb->begin();
+ while (insIt != bb->end()) {
+ if (const PHINode *pI = dyn_cast<const PHINode>(*insIt)) {
+ //Its a phinode!
+ //Calculate the incoming index for this
+ int incindex = pI->getBasicBlockIndex(tI->getParent());
+ if (incindex != -1)
+ {
+ //now we have to do the printing
+ if (pI && pI->hasName()) {
+ Out << "llvm__" << makeNameProper(pI->getName()) << "_"
+ << pI->getType()->getUniqueID() << " = ";
+ } else {
+ int Slot = Table.getValSlot(pI);
+ if (Slot >= 0)
+ Out << "llvm__tmp_" << Slot << "_"
+ << pI->getType()->getUniqueID() << " = ";
+ }
+ CW.writeOperand(pI->getIncomingValue(incindex),false, Out);
+ Out << ";\n";
+ }
+ }
+ else break;
+ insIt++;
+ }
+}
+
+// Implement all "other" instructions, except for PHINode
+void CInstPrintVisitor::visitCastInst(CastInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "(";
+ CW.printType(I->getType(), Out);
+ Out << ")";
+ CW.writeOperand(Operand, false, Out);
+ Out << ";\n";
+}
+
+void CInstPrintVisitor::visitCallInst(CallInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ const PointerType *PTy = dyn_cast<PointerType>(Operand->getType());
+ const FunctionType *MTy = PTy
+ ? dyn_cast<FunctionType>(PTy->getElementType()):0;
+ const Type *RetTy = MTy ? MTy->getReturnType() : 0;
+
+ // If possible, print out the short form of the call instruction, but we can
+ // only do this if the first argument is a pointer to a nonvararg method,
+ // and if the value returned is not a pointer to a method.
+ //
+ if (RetTy && !MTy->isVarArg() &&
+ (!isa<PointerType>(RetTy)||
+ !isa<FunctionType>(cast<PointerType>(RetTy)))){
+ Out << " ";
+ Out << makeNameProper(Operand->getName());
+ } else {
+ Out << makeNameProper(Operand->getName());
+ }
+ Out << "(";
+ if (I->getNumOperands() > 1)
+ CW.writeOperand(I->getOperand(1), false, Out);
+ for (unsigned op = 2, Eop = I->getNumOperands(); op < Eop; ++op) {
+ Out << ",";
+ CW.writeOperand(I->getOperand(op), false, Out);
+ }
+
+ Out << " );\n";
+}
+
+void CInstPrintVisitor::visitShr(ShiftInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "(";
+ CW.writeOperand(Operand, false, Out);
+ Out << " >> ";
+ Out << "(";
+ CW.writeOperand(I->getOperand(1), false, Out);
+ Out << "));\n";
+}
+
+void CInstPrintVisitor::visitShl(ShiftInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "(";
+ CW.writeOperand(Operand, false, Out);
+ Out << " << ";
+ Out << "(";
+ CW.writeOperand(I->getOperand(1), false, Out);
+ Out << "));\n";
+}
+
+// Specific Instruction type classes... note that all of the casts are
+// neccesary because we use the instruction classes as opaque types...
+//
+void CInstPrintVisitor::visitReturnInst(ReturnInst *I) {
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "return ";
+ if (Operand)
+ CW.writeOperand(Operand,false, Out);
+ Out << ";\n";
+}
+
+void CInstPrintVisitor::visitBranchInst(BranchInst *I) {
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ TerminatorInst *tI = cast<TerminatorInst>(I);
+ if (I->getNumOperands() > 1) {
+ Out << "if (";
+ CW.writeOperand(I->getOperand(2),false, Out);
+ Out << ") {\n";
+ printPhiFromNextBlock(tI,0);
+ Out << " goto ";
+ CW.writeOperand(Operand,false, Out);
+ Out << ";\n";
+ Out << "}" << "else {\n";
+ printPhiFromNextBlock(tI,1);
+ Out << " goto ";
+ CW.writeOperand(I->getOperand(1),false, Out);
+ Out << ";\n";
+ Out << "}\n";
+ } else {
+ printPhiFromNextBlock(tI,0);
+ Out << " goto ";
+ CW.writeOperand(Operand, false, Out);
+ Out << ";\n";
+ }
+ Out << "\n";
+}
+
+void CInstPrintVisitor::visitSwitchInst(SwitchInst *I) {
+ Out << "\n";
+}
+
+void CInstPrintVisitor::visitInvokeInst(InvokeInst *I) {
+ Out << "\n";
+}
+
+void CInstPrintVisitor::visitMallocInst(MallocInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ string tempstr = "";
+ Out << "(";
+ CW.printType(cast<const PointerType>(I->getType())->getElementType(), Out);
+ Out << "*) malloc(sizeof(";
+ CW.printTypeVar(cast<const PointerType>(I->getType())->getElementType(),
+ tempstr, Out);
+ Out << ")";
+ if (I->getNumOperands()) {
+ Out << " * " ;
+ CW.writeOperand(Operand, false, Out);
+ }
+ Out << ");";
+}
+
+void CInstPrintVisitor::visitAllocaInst(AllocaInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ string tempstr = "";
+ Out << "(";
+ CW.printTypeVar(I->getType(), tempstr, Out);
+ Out << ") alloca(sizeof(";
+ CW.printTypeVar(cast<const PointerType>(I->getType())->getElementType(),
+ tempstr, Out);
+ Out << ")";
+ if (I->getNumOperands()) {
+ Out << " * " ;
+ CW.writeOperand(Operand, false, Out);
+ }
+ Out << ");\n";
+}
+
+void CInstPrintVisitor::visitFreeInst(FreeInst *I) {
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "free(";
+ CW.writeOperand(Operand, false, Out);
+ Out << ");\n";
+}
+
+void CInstPrintVisitor::visitLoadInst(LoadInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ if (I->getNumOperands() <= 1) {
+ Out << "*";
+ CW.writeOperand(Operand,false, Out);
+ }
+ else {
+ //Check if it is an array type or struct type ptr!
+ int arrtype = 1;
+ const PointerType *PTy = dyn_cast<PointerType>(I->getType());
+ if (cast<const PointerType>(Operand->getType())->getElementType()->getPrimitiveID() == Type::StructTyID)
+ arrtype = 0;
+ if (arrtype && isa<GlobalValue>(Operand))
+ Out << "(&";
+ CW.writeOperand(Operand,false, Out);
+ for (unsigned i = 1, E = I->getNumOperands(); i != E; ++i) {
+ if (i == 1) {
+ if (arrtype || !isa<GlobalValue>(Operand)) {
+ Out << "[";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ Out << "]";
+ }
+ if (isa<GlobalValue>(Operand) && arrtype)
+ Out << ")";
+ }
+ else {
+ if (arrtype == 1) Out << "[";
+ else
+ Out << ".field";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ if (arrtype == 1) Out << "]";
+ }
+ }
+ }
+ Out << ";\n";
+}
+
+void CInstPrintVisitor::visitStoreInst(StoreInst *I) {
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ if (I->getNumOperands() <= 2) {
+ Out << "*";
+ CW.writeOperand(I->getOperand(1), false, Out);
+ }
+ else {
+ //Check if it is an array type or struct type ptr!
+ int arrtype = 1;
+ if (cast<const PointerType>(I->getOperand(1)->getType())->getElementType()->getPrimitiveID() == Type::StructTyID)
+ arrtype = 0;
+ if (isa<GlobalValue>(I->getOperand(1)) && arrtype)
+ Out << "(&";
+ CW.writeOperand(I->getOperand(1), false, Out);
+ for (unsigned i = 2, E = I->getNumOperands(); i != E; ++i) {
+ if (i == 2) {
+ if (arrtype || !isa<GlobalValue>(I->getOperand(1))) {
+ Out << "[";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ Out << "]";
+ }
+ if (isa<GlobalValue>(I->getOperand(1)) && arrtype)
+ Out << ")";
+ }
+ else {
+ if (arrtype == 1) Out << "[";
+ else
+ Out << ".field";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ if (arrtype == 1) Out << "]";
+ }
+ }
+ }
+ Out << " = ";
+ CW.writeOperand(Operand,false, Out);
+ Out << ";\n";
+}
+
+void CInstPrintVisitor::visitGetElementPtrInst(GetElementPtrInst *I) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << " &(";
+ if (I->getNumOperands() <= 1)
+ CW.writeOperand(Operand,false, Out);
+ else {
+ //Check if it is an array type or struct type ptr!
+ int arrtype = 1;
+ if ((cast<const PointerType>(Operand->getType()))->getElementType()->getPrimitiveID() == Type::StructTyID)
+ arrtype = 0;
+ if ((isa<GlobalValue>(Operand)) && arrtype)
+ Out << "(&";
+ CW.writeOperand(Operand,false, Out);
+ for (unsigned i = 1, E = I->getNumOperands(); i != E; ++i) {
+ if (i == 1) {
+ if (arrtype || !isa<GlobalValue>(Operand)){
+ Out << "[";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ Out << "]";
+ }
+ if (isa<GlobalValue>(Operand) && arrtype)
+ Out << ")";
+ }
+ else {
+ if (arrtype == 1) Out << "[";
+ else
+ Out << ".field";
+ CW.writeOperand(I->getOperand(i), false, Out);
+ if (arrtype == 1) Out << "]";
+ }
+ }
+ }
+ Out << ");\n";
+}
+
+void CInstPrintVisitor::visitPHINode(PHINode *I) {
+
+}
+
+void CInstPrintVisitor::visitUnaryOperator (UnaryOperator *I) {
+ if (I->getOpcode() == Instruction::Not) {
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ Out << "!(";
+ CW.writeOperand(Operand,false, Out);
+ Out << ");\n";
+ }
+ else {
+ Out << "<bad unary inst>\n";
+ }
+}
+
+void CInstPrintVisitor::visitBinaryOperator(BinaryOperator *I) {
+ //binary instructions, shift instructions, setCond instructions.
+ outputLValue(I);
+ Operand = I->getNumOperands() ? I->getOperand(0) : 0;
+ if (I->getType()->getPrimitiveID() == Type::PointerTyID) {
+ Out << "(";
+ CW.printType(I->getType(), Out);
+ Out << ")";
+ }
+ Out << "(";
+ if (Operand->getType()->getPrimitiveID() == Type::PointerTyID)
+ Out << "(long long)";
+ CW.w