-//===-- Writer.cpp - Library for converting LLVM code to C ----------------===//
+//===-- CBackend.cpp - Library for converting LLVM code to C --------------===//
//
// The LLVM Compiler Infrastructure
//
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/Instructions.h"
+#include "llvm/ParameterAttributes.h"
#include "llvm/Pass.h"
#include "llvm/PassManager.h"
-#include "llvm/SymbolTable.h"
+#include "llvm/TypeSymbolTable.h"
#include "llvm/Intrinsics.h"
#include "llvm/IntrinsicInst.h"
+#include "llvm/InlineAsm.h"
#include "llvm/Analysis/ConstantsScanner.h"
#include "llvm/Analysis/FindUsedTypes.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Target/TargetMachineRegistry.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetData.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Config/config.h"
#include <algorithm>
-#include <iostream>
-#include <ios>
#include <sstream>
using namespace llvm;
/// external functions with the same name.
///
class CBackendNameAllUsedStructsAndMergeFunctions : public ModulePass {
+ public:
+ static char ID;
+ CBackendNameAllUsedStructsAndMergeFunctions()
+ : ModulePass((intptr_t)&ID) {}
void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<FindUsedTypes>();
}
virtual bool runOnModule(Module &M);
};
+ char CBackendNameAllUsedStructsAndMergeFunctions::ID = 0;
+
/// CWriter - This class is the main chunk of code that converts an LLVM
/// module to a C translation unit.
class CWriter : public FunctionPass, public InstVisitor<CWriter> {
std::ostream &Out;
- DefaultIntrinsicLowering IL;
+ IntrinsicLowering *IL;
Mangler *Mang;
LoopInfo *LI;
const Module *TheModule;
+ const TargetAsmInfo* TAsm;
+ const TargetData* TD;
std::map<const Type *, std::string> TypeNames;
-
std::map<const ConstantFP *, unsigned> FPConstantMap;
+ std::set<Function*> intrinsicPrototypesAlreadyGenerated;
+
public:
- CWriter(std::ostream &o) : Out(o) {}
+ static char ID;
+ CWriter(std::ostream &o)
+ : FunctionPass((intptr_t)&ID), Out(o), IL(0), Mang(0), LI(0),
+ TheModule(0), TAsm(0), TD(0) {}
virtual const char *getPassName() const { return "C backend"; }
// Output all floating point constants that cannot be printed accurately.
printFloatingPointConstants(F);
- // Ensure that no local symbols conflict with global symbols.
- F.renameLocalSymbols();
-
printFunction(F);
FPConstantMap.clear();
return false;
return false;
}
- std::ostream &printType(std::ostream &Out, const Type *Ty,
+ std::ostream &printType(std::ostream &Out, const Type *Ty,
+ bool isSigned = false,
const std::string &VariableName = "",
bool IgnoreName = false);
+ std::ostream &printSimpleType(std::ostream &Out, const Type *Ty,
+ bool isSigned,
+ const std::string &NameSoFar = "");
void printStructReturnPointerFunctionType(std::ostream &Out,
const PointerType *Ty);
void writeOperand(Value *Operand);
+ void writeOperandRaw(Value *Operand);
void writeOperandInternal(Value *Operand);
void writeOperandWithCast(Value* Operand, unsigned Opcode);
+ void writeOperandWithCast(Value* Operand, ICmpInst::Predicate predicate);
bool writeInstructionCast(const Instruction &I);
private :
+ std::string InterpretASMConstraint(InlineAsm::ConstraintInfo& c);
+
void lowerIntrinsics(Function &F);
void printModule(Module *M);
- void printModuleTypes(const SymbolTable &ST);
+ void printModuleTypes(const TypeSymbolTable &ST);
void printContainedStructs(const Type *Ty, std::set<const StructType *> &);
void printFloatingPointConstants(Function &F);
void printFunctionSignature(const Function *F, bool Prototype);
void printBasicBlock(BasicBlock *BB);
void printLoop(Loop *L);
+ void printCast(unsigned opcode, const Type *SrcTy, const Type *DstTy);
void printConstant(Constant *CPV);
void printConstantWithCast(Constant *CPV, unsigned Opcode);
bool printConstExprCast(const ConstantExpr *CE);
void printConstantArray(ConstantArray *CPA);
- void printConstantPacked(ConstantPacked *CP);
+ void printConstantVector(ConstantVector *CP);
// isInlinableInst - Attempt to inline instructions into their uses to build
// trees as much as possible. To do this, we have to consistently decide
// printed and an extra copy of the expr is not emitted.
//
static bool isInlinableInst(const Instruction &I) {
- // Always inline setcc instructions, even if they are shared by multiple
+ // Always inline cmp instructions, even if they are shared by multiple
// expressions. GCC generates horrible code if we don't.
- if (isa<SetCondInst>(I)) return true;
+ if (isa<CmpInst>(I))
+ return true;
// Must be an expression, must be used exactly once. If it is dead, we
// emit it inline where it would go.
// Don't inline a load across a store or other bad things!
return false;
- // Only inline instruction it it's use is in the same BB as the inst.
+ // Must not be used in inline asm
+ if (I.hasOneUse() && isInlineAsm(*I.use_back())) return false;
+
+ // Only inline instruction it if it's use is in the same BB as the inst.
return I.getParent() == cast<Instruction>(I.use_back())->getParent();
}
return 0;
return AI;
}
-
+
+ // isInlineAsm - Check if the instruction is a call to an inline asm chunk
+ static bool isInlineAsm(const Instruction& I) {
+ if (isa<CallInst>(&I) && isa<InlineAsm>(I.getOperand(0)))
+ return true;
+ return false;
+ }
+
// Instruction visitation functions
friend class InstVisitor<CWriter>;
void visitPHINode(PHINode &I);
void visitBinaryOperator(Instruction &I);
+ void visitICmpInst(ICmpInst &I);
+ void visitFCmpInst(FCmpInst &I);
void visitCastInst (CastInst &I);
void visitSelectInst(SelectInst &I);
void visitCallInst (CallInst &I);
- void visitShiftInst(ShiftInst &I) { visitBinaryOperator(I); }
+ void visitInlineAsm(CallInst &I);
void visitMallocInst(MallocInst &I);
void visitAllocaInst(AllocaInst &I);
void visitVAArgInst (VAArgInst &I);
void visitInstruction(Instruction &I) {
- std::cerr << "C Writer does not know about " << I;
+ cerr << "C Writer does not know about " << I;
abort();
}
void outputLValue(Instruction *I) {
- Out << " " << Mang->getValueName(I) << " = ";
+ Out << " " << GetValueName(I) << " = ";
}
bool isGotoCodeNecessary(BasicBlock *From, BasicBlock *To);
unsigned Indent);
void printIndexingExpression(Value *Ptr, gep_type_iterator I,
gep_type_iterator E);
+
+ std::string GetValueName(const Value *Operand);
};
}
+char CWriter::ID = 0;
+
/// This method inserts names for any unnamed structure types that are used by
/// the program, and removes names from structure types that are not used by the
/// program.
// Loop over the module symbol table, removing types from UT that are
// already named, and removing names for types that are not used.
//
- SymbolTable &MST = M.getSymbolTable();
- for (SymbolTable::type_iterator TI = MST.type_begin(), TE = MST.type_end();
+ TypeSymbolTable &TST = M.getTypeSymbolTable();
+ for (TypeSymbolTable::iterator TI = TST.begin(), TE = TST.end();
TI != TE; ) {
- SymbolTable::type_iterator I = TI++;
-
- // If this is not used, remove it from the symbol table.
- std::set<const Type *>::iterator UTI = UT.find(I->second);
- if (UTI == UT.end())
- MST.remove(I);
- else
- UT.erase(UTI); // Only keep one name for this type.
+ TypeSymbolTable::iterator I = TI++;
+
+ // If this isn't a struct type, remove it from our set of types to name.
+ // This simplifies emission later.
+ if (!isa<StructType>(I->second) && !isa<OpaqueType>(I->second)) {
+ TST.remove(I);
+ } else {
+ // If this is not used, remove it from the symbol table.
+ std::set<const Type *>::iterator UTI = UT.find(I->second);
+ if (UTI == UT.end())
+ TST.remove(I);
+ else
+ UT.erase(UTI); // Only keep one name for this type.
+ }
}
// UT now contains types that are not named. Loop over it, naming
std::map<std::string, GlobalValue*> ExtSymbols;
for (Module::iterator I = M.begin(), E = M.end(); I != E;) {
Function *GV = I++;
- if (GV->isExternal() && GV->hasName()) {
+ if (GV->isDeclaration() && GV->hasName()) {
std::pair<std::map<std::string, GlobalValue*>::iterator, bool> X
= ExtSymbols.insert(std::make_pair(GV->getName(), GV));
if (!X.second) {
// Found a conflict, replace this global with the previous one.
GlobalValue *OldGV = X.first->second;
- GV->replaceAllUsesWith(ConstantExpr::getCast(OldGV, GV->getType()));
+ GV->replaceAllUsesWith(ConstantExpr::getBitCast(OldGV, GV->getType()));
GV->eraseFromParent();
Changed = true;
}
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E;) {
GlobalVariable *GV = I++;
- if (GV->isExternal() && GV->hasName()) {
+ if (GV->isDeclaration() && GV->hasName()) {
std::pair<std::map<std::string, GlobalValue*>::iterator, bool> X
= ExtSymbols.insert(std::make_pair(GV->getName(), GV));
if (!X.second) {
// Found a conflict, replace this global with the previous one.
GlobalValue *OldGV = X.first->second;
- GV->replaceAllUsesWith(ConstantExpr::getCast(OldGV, GV->getType()));
+ GV->replaceAllUsesWith(ConstantExpr::getBitCast(OldGV, GV->getType()));
GV->eraseFromParent();
Changed = true;
}
FunctionType::param_iterator I = FTy->param_begin(), E = FTy->param_end();
const Type *RetTy = cast<PointerType>(I->get())->getElementType();
+ unsigned Idx = 1;
+ const ParamAttrsList *Attrs = FTy->getParamAttrs();
for (++I; I != E; ++I) {
if (PrintedType)
FunctionInnards << ", ";
- printType(FunctionInnards, *I, "");
+ printType(FunctionInnards, *I,
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(Idx, ParamAttr::SExt), "");
PrintedType = true;
}
if (FTy->isVarArg()) {
}
FunctionInnards << ')';
std::string tstr = FunctionInnards.str();
- printType(Out, RetTy, tstr);
+ printType(Out, RetTy,
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(0, ParamAttr::SExt), tstr);
}
+std::ostream &
+CWriter::printSimpleType(std::ostream &Out, const Type *Ty, bool isSigned,
+ const std::string &NameSoFar) {
+ assert((Ty->isPrimitiveType() || Ty->isInteger()) &&
+ "Invalid type for printSimpleType");
+ switch (Ty->getTypeID()) {
+ case Type::VoidTyID: return Out << "void " << NameSoFar;
+ case Type::IntegerTyID: {
+ unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
+ if (NumBits == 1)
+ return Out << "bool " << NameSoFar;
+ else if (NumBits <= 8)
+ return Out << (isSigned?"signed":"unsigned") << " char " << NameSoFar;
+ else if (NumBits <= 16)
+ return Out << (isSigned?"signed":"unsigned") << " short " << NameSoFar;
+ else if (NumBits <= 32)
+ return Out << (isSigned?"signed":"unsigned") << " int " << NameSoFar;
+ else {
+ assert(NumBits <= 64 && "Bit widths > 64 not implemented yet");
+ return Out << (isSigned?"signed":"unsigned") << " long long "<< NameSoFar;
+ }
+ }
+ case Type::FloatTyID: return Out << "float " << NameSoFar;
+ case Type::DoubleTyID: return Out << "double " << NameSoFar;
+ default :
+ cerr << "Unknown primitive type: " << *Ty << "\n";
+ abort();
+ }
+}
// Pass the Type* and the variable name and this prints out the variable
// declaration.
//
std::ostream &CWriter::printType(std::ostream &Out, const Type *Ty,
- const std::string &NameSoFar,
+ bool isSigned, const std::string &NameSoFar,
bool IgnoreName) {
- if (Ty->isPrimitiveType())
- switch (Ty->getTypeID()) {
- case Type::VoidTyID: return Out << "void " << NameSoFar;
- case Type::BoolTyID: return Out << "bool " << NameSoFar;
- case Type::UByteTyID: return Out << "unsigned char " << NameSoFar;
- case Type::SByteTyID: return Out << "signed char " << NameSoFar;
- case Type::UShortTyID: return Out << "unsigned short " << NameSoFar;
- case Type::ShortTyID: return Out << "short " << NameSoFar;
- case Type::UIntTyID: return Out << "unsigned " << NameSoFar;
- case Type::IntTyID: return Out << "int " << NameSoFar;
- case Type::ULongTyID: return Out << "unsigned long long " << NameSoFar;
- case Type::LongTyID: return Out << "signed long long " << NameSoFar;
- case Type::FloatTyID: return Out << "float " << NameSoFar;
- case Type::DoubleTyID: return Out << "double " << NameSoFar;
- default :
- std::cerr << "Unknown primitive type: " << *Ty << "\n";
- abort();
- }
+ if (Ty->isPrimitiveType() || Ty->isInteger()) {
+ printSimpleType(Out, Ty, isSigned, NameSoFar);
+ return Out;
+ }
// Check to see if the type is named.
if (!IgnoreName || isa<OpaqueType>(Ty)) {
const FunctionType *FTy = cast<FunctionType>(Ty);
std::stringstream FunctionInnards;
FunctionInnards << " (" << NameSoFar << ") (";
+ const ParamAttrsList *Attrs = FTy->getParamAttrs();
+ unsigned Idx = 1;
for (FunctionType::param_iterator I = FTy->param_begin(),
E = FTy->param_end(); I != E; ++I) {
if (I != FTy->param_begin())
FunctionInnards << ", ";
- printType(FunctionInnards, *I, "");
+ printType(FunctionInnards, *I,
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(Idx, ParamAttr::SExt), "");
+ ++Idx;
}
if (FTy->isVarArg()) {
if (FTy->getNumParams())
}
FunctionInnards << ')';
std::string tstr = FunctionInnards.str();
- printType(Out, FTy->getReturnType(), tstr);
+ printType(Out, FTy->getReturnType(),
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(0, ParamAttr::SExt), tstr);
return Out;
}
case Type::StructTyID: {
for (StructType::element_iterator I = STy->element_begin(),
E = STy->element_end(); I != E; ++I) {
Out << " ";
- printType(Out, *I, "field" + utostr(Idx++));
+ printType(Out, *I, false, "field" + utostr(Idx++));
Out << ";\n";
}
- return Out << '}';
+ Out << '}';
+ if (STy->isPacked())
+ Out << " __attribute__ ((packed))";
+ return Out;
}
case Type::PointerTyID: {
std::string ptrName = "*" + NameSoFar;
if (isa<ArrayType>(PTy->getElementType()) ||
- isa<PackedType>(PTy->getElementType()))
+ isa<VectorType>(PTy->getElementType()))
ptrName = "(" + ptrName + ")";
- return printType(Out, PTy->getElementType(), ptrName);
+ return printType(Out, PTy->getElementType(), false, ptrName);
}
case Type::ArrayTyID: {
const ArrayType *ATy = cast<ArrayType>(Ty);
unsigned NumElements = ATy->getNumElements();
if (NumElements == 0) NumElements = 1;
- return printType(Out, ATy->getElementType(),
+ return printType(Out, ATy->getElementType(), false,
NameSoFar + "[" + utostr(NumElements) + "]");
}
- case Type::PackedTyID: {
- const PackedType *PTy = cast<PackedType>(Ty);
+ case Type::VectorTyID: {
+ const VectorType *PTy = cast<VectorType>(Ty);
unsigned NumElements = PTy->getNumElements();
if (NumElements == 0) NumElements = 1;
- return printType(Out, PTy->getElementType(),
+ return printType(Out, PTy->getElementType(), false,
NameSoFar + "[" + utostr(NumElements) + "]");
}
// ubytes or an array of sbytes with positive values.
//
const Type *ETy = CPA->getType()->getElementType();
- bool isString = (ETy == Type::SByteTy || ETy == Type::UByteTy);
+ bool isString = (ETy == Type::Int8Ty || ETy == Type::Int8Ty);
// Make sure the last character is a null char, as automatically added by C
if (isString && (CPA->getNumOperands() == 0 ||
}
}
-void CWriter::printConstantPacked(ConstantPacked *CP) {
+void CWriter::printConstantVector(ConstantVector *CP) {
Out << '{';
if (CP->getNumOperands()) {
Out << ' ';
// only deal in IEEE FP).
//
static bool isFPCSafeToPrint(const ConstantFP *CFP) {
+ APFloat APF = APFloat(CFP->getValueAPF()); // copy
+ if (CFP->getType()==Type::FloatTy)
+ APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
#if HAVE_PRINTF_A && ENABLE_CBE_PRINTF_A
char Buffer[100];
- sprintf(Buffer, "%a", CFP->getValue());
-
+ sprintf(Buffer, "%a", APF.convertToDouble());
if (!strncmp(Buffer, "0x", 2) ||
!strncmp(Buffer, "-0x", 3) ||
!strncmp(Buffer, "+0x", 3))
- return atof(Buffer) == CFP->getValue();
+ return APF.bitwiseIsEqual(APFloat(atof(Buffer)));
return false;
#else
- std::string StrVal = ftostr(CFP->getValue());
+ std::string StrVal = ftostr(APF);
while (StrVal[0] == ' ')
StrVal.erase(StrVal.begin());
((StrVal[0] == '-' || StrVal[0] == '+') &&
(StrVal[1] >= '0' && StrVal[1] <= '9')))
// Reparse stringized version!
- return atof(StrVal.c_str()) == CFP->getValue();
+ return APF.bitwiseIsEqual(APFloat(atof(StrVal.c_str())));
return false;
#endif
}
+/// Print out the casting for a cast operation. This does the double casting
+/// necessary for conversion to the destination type, if necessary.
+/// @brief Print a cast
+void CWriter::printCast(unsigned opc, const Type *SrcTy, const Type *DstTy) {
+ // Print the destination type cast
+ switch (opc) {
+ case Instruction::UIToFP:
+ case Instruction::SIToFP:
+ case Instruction::IntToPtr:
+ case Instruction::Trunc:
+ case Instruction::BitCast:
+ case Instruction::FPExt:
+ case Instruction::FPTrunc: // For these the DstTy sign doesn't matter
+ Out << '(';
+ printType(Out, DstTy);
+ Out << ')';
+ break;
+ case Instruction::ZExt:
+ case Instruction::PtrToInt:
+ case Instruction::FPToUI: // For these, make sure we get an unsigned dest
+ Out << '(';
+ printSimpleType(Out, DstTy, false);
+ Out << ')';
+ break;
+ case Instruction::SExt:
+ case Instruction::FPToSI: // For these, make sure we get a signed dest
+ Out << '(';
+ printSimpleType(Out, DstTy, true);
+ Out << ')';
+ break;
+ default:
+ assert(0 && "Invalid cast opcode");
+ }
+
+ // Print the source type cast
+ switch (opc) {
+ case Instruction::UIToFP:
+ case Instruction::ZExt:
+ Out << '(';
+ printSimpleType(Out, SrcTy, false);
+ Out << ')';
+ break;
+ case Instruction::SIToFP:
+ case Instruction::SExt:
+ Out << '(';
+ printSimpleType(Out, SrcTy, true);
+ Out << ')';
+ break;
+ case Instruction::IntToPtr:
+ case Instruction::PtrToInt:
+ // Avoid "cast to pointer from integer of different size" warnings
+ Out << "(unsigned long)";
+ break;
+ case Instruction::Trunc:
+ case Instruction::BitCast:
+ case Instruction::FPExt:
+ case Instruction::FPTrunc:
+ case Instruction::FPToSI:
+ case Instruction::FPToUI:
+ break; // These don't need a source cast.
+ default:
+ assert(0 && "Invalid cast opcode");
+ break;
+ }
+}
+
// printConstant - The LLVM Constant to C Constant converter.
void CWriter::printConstant(Constant *CPV) {
if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CPV)) {
switch (CE->getOpcode()) {
- case Instruction::Cast:
- Out << "((";
- printType(Out, CPV->getType());
- Out << ')';
+ case Instruction::Trunc:
+ case Instruction::ZExt:
+ case Instruction::SExt:
+ case Instruction::FPTrunc:
+ case Instruction::FPExt:
+ case Instruction::UIToFP:
+ case Instruction::SIToFP:
+ case Instruction::FPToUI:
+ case Instruction::FPToSI:
+ case Instruction::PtrToInt:
+ case Instruction::IntToPtr:
+ case Instruction::BitCast:
+ Out << "(";
+ printCast(CE->getOpcode(), CE->getOperand(0)->getType(), CE->getType());
+ if (CE->getOpcode() == Instruction::SExt &&
+ CE->getOperand(0)->getType() == Type::Int1Ty) {
+ // Make sure we really sext from bool here by subtracting from 0
+ Out << "0-";
+ }
printConstant(CE->getOperand(0));
+ if (CE->getType() == Type::Int1Ty &&
+ (CE->getOpcode() == Instruction::Trunc ||
+ CE->getOpcode() == Instruction::FPToUI ||
+ CE->getOpcode() == Instruction::FPToSI ||
+ CE->getOpcode() == Instruction::PtrToInt)) {
+ // Make sure we really truncate to bool here by anding with 1
+ Out << "&1u";
+ }
Out << ')';
return;
case Instruction::And:
case Instruction::Or:
case Instruction::Xor:
- case Instruction::SetEQ:
- case Instruction::SetNE:
- case Instruction::SetLT:
- case Instruction::SetLE:
- case Instruction::SetGT:
- case Instruction::SetGE:
+ case Instruction::ICmp:
case Instruction::Shl:
- case Instruction::Shr:
+ case Instruction::LShr:
+ case Instruction::AShr:
{
Out << '(';
bool NeedsClosingParens = printConstExprCast(CE);
case Instruction::And: Out << " & "; break;
case Instruction::Or: Out << " | "; break;
case Instruction::Xor: Out << " ^ "; break;
- case Instruction::SetEQ: Out << " == "; break;
- case Instruction::SetNE: Out << " != "; break;
- case Instruction::SetLT: Out << " < "; break;
- case Instruction::SetLE: Out << " <= "; break;
- case Instruction::SetGT: Out << " > "; break;
- case Instruction::SetGE: Out << " >= "; break;
case Instruction::Shl: Out << " << "; break;
- case Instruction::Shr: Out << " >> "; break;
+ case Instruction::LShr:
+ case Instruction::AShr: Out << " >> "; break;
+ case Instruction::ICmp:
+ switch (CE->getPredicate()) {
+ case ICmpInst::ICMP_EQ: Out << " == "; break;
+ case ICmpInst::ICMP_NE: Out << " != "; break;
+ case ICmpInst::ICMP_SLT:
+ case ICmpInst::ICMP_ULT: Out << " < "; break;
+ case ICmpInst::ICMP_SLE:
+ case ICmpInst::ICMP_ULE: Out << " <= "; break;
+ case ICmpInst::ICMP_SGT:
+ case ICmpInst::ICMP_UGT: Out << " > "; break;
+ case ICmpInst::ICMP_SGE:
+ case ICmpInst::ICMP_UGE: Out << " >= "; break;
+ default: assert(0 && "Illegal ICmp predicate");
+ }
+ break;
default: assert(0 && "Illegal opcode here!");
}
printConstantWithCast(CE->getOperand(1), CE->getOpcode());
Out << ')';
return;
}
-
+ case Instruction::FCmp: {
+ Out << '(';
+ bool NeedsClosingParens = printConstExprCast(CE);
+ if (CE->getPredicate() == FCmpInst::FCMP_FALSE)
+ Out << "0";
+ else if (CE->getPredicate() == FCmpInst::FCMP_TRUE)
+ Out << "1";
+ else {
+ const char* op = 0;
+ switch (CE->getPredicate()) {
+ default: assert(0 && "Illegal FCmp predicate");
+ case FCmpInst::FCMP_ORD: op = "ord"; break;
+ case FCmpInst::FCMP_UNO: op = "uno"; break;
+ case FCmpInst::FCMP_UEQ: op = "ueq"; break;
+ case FCmpInst::FCMP_UNE: op = "une"; break;
+ case FCmpInst::FCMP_ULT: op = "ult"; break;
+ case FCmpInst::FCMP_ULE: op = "ule"; break;
+ case FCmpInst::FCMP_UGT: op = "ugt"; break;
+ case FCmpInst::FCMP_UGE: op = "uge"; break;
+ case FCmpInst::FCMP_OEQ: op = "oeq"; break;
+ case FCmpInst::FCMP_ONE: op = "one"; break;
+ case FCmpInst::FCMP_OLT: op = "olt"; break;
+ case FCmpInst::FCMP_OLE: op = "ole"; break;
+ case FCmpInst::FCMP_OGT: op = "ogt"; break;
+ case FCmpInst::FCMP_OGE: op = "oge"; break;
+ }
+ Out << "llvm_fcmp_" << op << "(";
+ printConstantWithCast(CE->getOperand(0), CE->getOpcode());
+ Out << ", ";
+ printConstantWithCast(CE->getOperand(1), CE->getOpcode());
+ Out << ")";
+ }
+ if (NeedsClosingParens)
+ Out << "))";
+ Out << ')';
+ }
default:
- std::cerr << "CWriter Error: Unhandled constant expression: "
- << *CE << "\n";
+ cerr << "CWriter Error: Unhandled constant expression: "
+ << *CE << "\n";
abort();
}
} else if (isa<UndefValue>(CPV) && CPV->getType()->isFirstClassType()) {
Out << "((";
- printType(Out, CPV->getType());
+ printType(Out, CPV->getType()); // sign doesn't matter
Out << ")/*UNDEF*/0)";
return;
}
- switch (CPV->getType()->getTypeID()) {
- case Type::BoolTyID:
- Out << (cast<ConstantBool>(CPV)->getValue() ? '1' : '0');
- break;
- case Type::SByteTyID:
- case Type::ShortTyID:
- Out << cast<ConstantInt>(CPV)->getSExtValue();
- break;
- case Type::IntTyID:
- if ((int)cast<ConstantInt>(CPV)->getSExtValue() == (int)0x80000000)
- Out << "((int)0x80000000U)"; // Handle MININT specially to avoid warning
- else
- Out << cast<ConstantInt>(CPV)->getSExtValue();
- break;
-
- case Type::LongTyID:
- if (cast<ConstantInt>(CPV)->isMinValue())
- Out << "(/*INT64_MIN*/(-9223372036854775807LL)-1)";
- else
- Out << cast<ConstantInt>(CPV)->getSExtValue() << "ll";
- break;
-
- case Type::UByteTyID:
- case Type::UShortTyID:
- Out << cast<ConstantInt>(CPV)->getZExtValue();
- break;
- case Type::UIntTyID:
- Out << cast<ConstantInt>(CPV)->getZExtValue() << 'u';
- break;
- case Type::ULongTyID:
- Out << cast<ConstantInt>(CPV)->getZExtValue() << "ull";
- break;
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(CPV)) {
+ const Type* Ty = CI->getType();
+ if (Ty == Type::Int1Ty)
+ Out << (CI->getZExtValue() ? '1' : '0') ;
+ else {
+ Out << "((";
+ printSimpleType(Out, Ty, false) << ')';
+ if (CI->isMinValue(true))
+ Out << CI->getZExtValue() << 'u';
+ else
+ Out << CI->getSExtValue();
+ if (Ty->getPrimitiveSizeInBits() > 32)
+ Out << "ll";
+ Out << ')';
+ }
+ return;
+ }
+ switch (CPV->getType()->getTypeID()) {
case Type::FloatTyID:
case Type::DoubleTyID: {
ConstantFP *FPC = cast<ConstantFP>(CPV);
Out << "(*(" << (FPC->getType() == Type::FloatTy ? "float" : "double")
<< "*)&FPConstant" << I->second << ')';
} else {
- if (IsNAN(FPC->getValue())) {
+ double V = FPC->getType() == Type::FloatTy ?
+ FPC->getValueAPF().convertToFloat() :
+ FPC->getValueAPF().convertToDouble();
+ if (IsNAN(V)) {
// The value is NaN
+ // FIXME the actual NaN bits should be emitted.
// The prefix for a quiet NaN is 0x7FF8. For a signalling NaN,
// it's 0x7ff4.
const unsigned long QuietNaN = 0x7ff8UL;
// We need to grab the first part of the FP #
char Buffer[100];
- uint64_t ll = DoubleToBits(FPC->getValue());
+ uint64_t ll = DoubleToBits(V);
sprintf(Buffer, "0x%llx", static_cast<long long>(ll));
std::string Num(&Buffer[0], &Buffer[6]);
else
Out << "LLVM_NAN" << (Val == QuietNaN ? "" : "S") << "(\""
<< Buffer << "\") /*nan*/ ";
- } else if (IsInf(FPC->getValue())) {
+ } else if (IsInf(V)) {
// The value is Inf
- if (FPC->getValue() < 0) Out << '-';
+ if (V < 0) Out << '-';
Out << "LLVM_INF" << (FPC->getType() == Type::FloatTy ? "F" : "")
<< " /*inf*/ ";
} else {
#if HAVE_PRINTF_A && ENABLE_CBE_PRINTF_A
// Print out the constant as a floating point number.
char Buffer[100];
- sprintf(Buffer, "%a", FPC->getValue());
+ sprintf(Buffer, "%a", V);
Num = Buffer;
#else
- Num = ftostr(FPC->getValue());
+ Num = ftostr(FPC->getValueAPF());
#endif
- Out << Num;
+ Out << Num;
}
}
break;
}
break;
- case Type::PackedTyID:
+ case Type::VectorTyID:
if (isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV)) {
- const PackedType *AT = cast<PackedType>(CPV->getType());
+ const VectorType *AT = cast<VectorType>(CPV->getType());
Out << '{';
if (AT->getNumElements()) {
Out << ' ';
}
Out << " }";
} else {
- printConstantPacked(cast<ConstantPacked>(CPV));
+ printConstantVector(cast<ConstantVector>(CPV));
}
break;
case Type::PointerTyID:
if (isa<ConstantPointerNull>(CPV)) {
Out << "((";
- printType(Out, CPV->getType());
+ printType(Out, CPV->getType()); // sign doesn't matter
Out << ")/*NULL*/0)";
break;
} else if (GlobalValue *GV = dyn_cast<GlobalValue>(CPV)) {
}
// FALL THROUGH
default:
- std::cerr << "Unknown constant type: " << *CPV << "\n";
+ cerr << "Unknown constant type: " << *CPV << "\n";
abort();
}
}
// because their operands were casted to the expected type. This function takes
// care of detecting that case and printing the cast for the ConstantExpr.
bool CWriter::printConstExprCast(const ConstantExpr* CE) {
- bool Result = false;
- const Type* Ty = CE->getOperand(0)->getType();
+ bool NeedsExplicitCast = false;
+ const Type *Ty = CE->getOperand(0)->getType();
+ bool TypeIsSigned = false;
switch (CE->getOpcode()) {
- case Instruction::UDiv:
+ case Instruction::LShr:
case Instruction::URem:
- Result = Ty->isSigned(); break;
- case Instruction::SDiv:
+ case Instruction::UDiv: NeedsExplicitCast = true; break;
+ case Instruction::AShr:
case Instruction::SRem:
- Result = Ty->isUnsigned(); break;
+ case Instruction::SDiv: NeedsExplicitCast = true; TypeIsSigned = true; break;
+ case Instruction::SExt:
+ Ty = CE->getType();
+ NeedsExplicitCast = true;
+ TypeIsSigned = true;
+ break;
+ case Instruction::ZExt:
+ case Instruction::Trunc:
+ case Instruction::FPTrunc:
+ case Instruction::FPExt:
+ case Instruction::UIToFP:
+ case Instruction::SIToFP:
+ case Instruction::FPToUI:
+ case Instruction::FPToSI:
+ case Instruction::PtrToInt:
+ case Instruction::IntToPtr:
+ case Instruction::BitCast:
+ Ty = CE->getType();
+ NeedsExplicitCast = true;
+ break;
default: break;
}
- if (Result) {
+ if (NeedsExplicitCast) {
Out << "((";
- printType(Out, Ty);
+ if (Ty->isInteger() && Ty != Type::Int1Ty)
+ printSimpleType(Out, Ty, TypeIsSigned);
+ else
+ printType(Out, Ty); // not integer, sign doesn't matter
Out << ")(";
}
- return Result;
+ return NeedsExplicitCast;
}
// Print a constant assuming that it is the operand for a given Opcode. The
// Indicate whether to do the cast or not.
bool shouldCast = false;
+ bool typeIsSigned = false;
// Based on the Opcode for which this Constant is being written, determine
// the new type to which the operand should be casted by setting the value
- // of OpTy. If we change OpTy, also set shouldCast to true.
+ // of OpTy. If we change OpTy, also set shouldCast to true so it gets
+ // casted below.
switch (Opcode) {
default:
// for most instructions, it doesn't matter
break;
+ case Instruction::LShr:
case Instruction::UDiv:
case Instruction::URem:
- // For UDiv/URem get correct type
- if (OpTy->isSigned()) {
- OpTy = OpTy->getUnsignedVersion();
- shouldCast = true;
- }
+ shouldCast = true;
break;
+ case Instruction::AShr:
case Instruction::SDiv:
case Instruction::SRem:
- // For SDiv/SRem get correct type
- if (OpTy->isUnsigned()) {
- OpTy = OpTy->getSignedVersion();
- shouldCast = true;
- }
+ shouldCast = true;
+ typeIsSigned = true;
break;
}
- // Write out the casted constnat if we should, otherwise just write the
+ // Write out the casted constant if we should, otherwise just write the
// operand.
if (shouldCast) {
Out << "((";
- printType(Out, OpTy);
+ printSimpleType(Out, OpTy, typeIsSigned);
Out << ")";
printConstant(CPV);
Out << ")";
} else
- writeOperand(CPV);
+ printConstant(CPV);
+}
+
+std::string CWriter::GetValueName(const Value *Operand) {
+ std::string Name;
+
+ if (!isa<GlobalValue>(Operand) && Operand->getName() != "") {
+ std::string VarName;
+
+ Name = Operand->getName();
+ VarName.reserve(Name.capacity());
+
+ for (std::string::iterator I = Name.begin(), E = Name.end();
+ I != E; ++I) {
+ char ch = *I;
+
+ if (!((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+ (ch >= '0' && ch <= '9') || ch == '_'))
+ VarName += '_';
+ else
+ VarName += ch;
+ }
+ Name = "llvm_cbe_" + VarName;
+ } else {
+ Name = Mang->getValueName(Operand);
+ }
+
+ return Name;
}
void CWriter::writeOperandInternal(Value *Operand) {
}
Constant* CPV = dyn_cast<Constant>(Operand);
+
+ if (CPV && !isa<GlobalValue>(CPV))
+ printConstant(CPV);
+ else
+ Out << GetValueName(Operand);
+}
+
+void CWriter::writeOperandRaw(Value *Operand) {
+ Constant* CPV = dyn_cast<Constant>(Operand);
if (CPV && !isa<GlobalValue>(CPV)) {
printConstant(CPV);
} else {
- Out << Mang->getValueName(Operand);
+ Out << GetValueName(Operand);
}
}
void CWriter::writeOperand(Value *Operand) {
if (isa<GlobalVariable>(Operand) || isDirectAlloca(Operand))
- Out << "(&"; // Global variables are references as their addresses by llvm
+ Out << "(&"; // Global variables are referenced as their addresses by llvm
writeOperandInternal(Operand);
// This function takes care of detecting that case and printing the cast
// for the Instruction.
bool CWriter::writeInstructionCast(const Instruction &I) {
- bool Result = false;
- const Type* Ty = I.getOperand(0)->getType();
+ const Type *Ty = I.getOperand(0)->getType();
switch (I.getOpcode()) {
- case Instruction::UDiv:
+ case Instruction::LShr:
case Instruction::URem:
- Result = Ty->isSigned(); break;
- case Instruction::SDiv:
+ case Instruction::UDiv:
+ Out << "((";
+ printSimpleType(Out, Ty, false);
+ Out << ")(";
+ return true;
+ case Instruction::AShr:
case Instruction::SRem:
- Result = Ty->isUnsigned(); break;
- default: break;
- }
- if (Result) {
+ case Instruction::SDiv:
Out << "((";
- printType(Out, Ty);
+ printSimpleType(Out, Ty, true);
Out << ")(";
+ return true;
+ default: break;
}
- return Result;
+ return false;
}
// Write the operand with a cast to another type based on the Opcode being used.
// Indicate whether to do the cast or not.
bool shouldCast = false;
+ // Indicate whether the cast should be to a signed type or not.
+ bool castIsSigned = false;
+
// Based on the Opcode for which this Operand is being written, determine
// the new type to which the operand should be casted by setting the value
// of OpTy. If we change OpTy, also set shouldCast to true.
default:
// for most instructions, it doesn't matter
break;
+ case Instruction::LShr:
case Instruction::UDiv:
- case Instruction::URem:
- // For UDiv to have unsigned operands
- if (OpTy->isSigned()) {
- OpTy = OpTy->getUnsignedVersion();
- shouldCast = true;
- }
+ case Instruction::URem: // Cast to unsigned first
+ shouldCast = true;
+ castIsSigned = false;
break;
+ case Instruction::AShr:
case Instruction::SDiv:
- case Instruction::SRem:
- if (OpTy->isUnsigned()) {
- OpTy = OpTy->getSignedVersion();
- shouldCast = true;
- }
+ case Instruction::SRem: // Cast to signed first
+ shouldCast = true;
+ castIsSigned = true;
break;
}
// operand.
if (shouldCast) {
Out << "((";
- printType(Out, OpTy);
+ printSimpleType(Out, OpTy, castIsSigned);
Out << ")";
writeOperand(Operand);
Out << ")";
} else
writeOperand(Operand);
+}
+
+// Write the operand with a cast to another type based on the icmp predicate
+// being used.
+void CWriter::writeOperandWithCast(Value* Operand, ICmpInst::Predicate predicate) {
+
+ // Extract the operand's type, we'll need it.
+ const Type* OpTy = Operand->getType();
+
+ // Indicate whether to do the cast or not.
+ bool shouldCast = false;
+
+ // Indicate whether the cast should be to a signed type or not.
+ bool castIsSigned = false;
+
+ // Based on the Opcode for which this Operand is being written, determine
+ // the new type to which the operand should be casted by setting the value
+ // of OpTy. If we change OpTy, also set shouldCast to true.
+ switch (predicate) {
+ default:
+ // for eq and ne, it doesn't matter
+ break;
+ case ICmpInst::ICMP_UGT:
+ case ICmpInst::ICMP_UGE:
+ case ICmpInst::ICMP_ULT:
+ case ICmpInst::ICMP_ULE:
+ shouldCast = true;
+ break;
+ case ICmpInst::ICMP_SGT:
+ case ICmpInst::ICMP_SGE:
+ case ICmpInst::ICMP_SLT:
+ case ICmpInst::ICMP_SLE:
+ shouldCast = true;
+ castIsSigned = true;
+ break;
+ }
+ // Write out the casted operand if we should, otherwise just write the
+ // operand.
+ if (shouldCast) {
+ Out << "((";
+ if (OpTy->isInteger() && OpTy != Type::Int1Ty)
+ printSimpleType(Out, OpTy, castIsSigned);
+ else
+ printType(Out, OpTy); // not integer, sign doesn't matter
+ Out << ")";
+ writeOperand(Operand);
+ Out << ")";
+ } else
+ writeOperand(Operand);
}
// generateCompilerSpecificCode - This is where we add conditional compilation
// Alloca is hard to get, and we don't want to include stdlib.h here.
Out << "/* get a declaration for alloca */\n"
<< "#if defined(__CYGWIN__) || defined(__MINGW32__)\n"
- << "extern void *_alloca(unsigned long);\n"
- << "#define alloca(x) _alloca(x)\n"
+ << "#define alloca(x) __builtin_alloca((x))\n"
+ << "#define _alloca(x) __builtin_alloca((x))\n"
<< "#elif defined(__APPLE__)\n"
<< "extern void *__builtin_alloca(unsigned long);\n"
<< "#define alloca(x) __builtin_alloca(x)\n"
+ << "#define longjmp _longjmp\n"
+ << "#define setjmp _setjmp\n"
<< "#elif defined(__sun__)\n"
<< "#if defined(__sparcv9)\n"
<< "extern void *__builtin_alloca(unsigned long);\n"
<< "#define alloca(x) __builtin_alloca(x)\n"
<< "#elif defined(__FreeBSD__) || defined(__OpenBSD__)\n"
<< "#define alloca(x) __builtin_alloca(x)\n"
- << "#elif !defined(_MSC_VER)\n"
+ << "#elif defined(_MSC_VER)\n"
+ << "#define inline _inline\n"
+ << "#define alloca(x) _alloca(x)\n"
+ << "#else\n"
<< "#include <alloca.h>\n"
<< "#endif\n\n";
<< "#define __attribute__(X)\n"
<< "#endif\n\n";
-#if 0
- // At some point, we should support "external weak" vs. "weak" linkages.
// On Mac OS X, "external weak" is spelled "__attribute__((weak_import))".
Out << "#if defined(__GNUC__) && defined(__APPLE_CC__)\n"
<< "#define __EXTERNAL_WEAK__ __attribute__((weak_import))\n"
<< "#else\n"
<< "#define __EXTERNAL_WEAK__\n"
<< "#endif\n\n";
-#endif
// For now, turn off the weak linkage attribute on Mac OS X. (See above.)
Out << "#if defined(__GNUC__) && defined(__APPLE_CC__)\n"
<< "#define __ATTRIBUTE_WEAK__\n"
<< "#endif\n\n";
+ // Add hidden visibility support. FIXME: APPLE_CC?
+ Out << "#if defined(__GNUC__)\n"
+ << "#define __HIDDEN__ __attribute__((visibility(\"hidden\")))\n"
+ << "#endif\n\n";
+
// Define NaN and Inf as GCC builtins if using GCC, as 0 otherwise
// From the GCC documentation:
//
<< "#define __ATTRIBUTE_DTOR__\n"
<< "#define LLVM_ASM(X)\n"
<< "#endif\n\n";
+
+ Out << "#if __GNUC__ < 4 /* Old GCC's, or compilers not GCC */ \n"
+ << "#define __builtin_stack_save() 0 /* not implemented */\n"
+ << "#define __builtin_stack_restore(X) /* noop */\n"
+ << "#endif\n\n";
// Output target-specific code that should be inserted into main.
Out << "#define CODE_FOR_MAIN() /* Any target-specific code for main()*/\n";
- // On X86, set the FP control word to 64-bits of precision instead of 80 bits.
- Out << "#if defined(__GNUC__) && !defined(__llvm__)\n"
- << "#if defined(i386) || defined(__i386__) || defined(__i386) || "
- << "defined(__x86_64__)\n"
- << "#undef CODE_FOR_MAIN\n"
- << "#define CODE_FOR_MAIN() \\\n"
- << " {short F;__asm__ (\"fnstcw %0\" : \"=m\" (*&F)); \\\n"
- << " F=(F&~0x300)|0x200;__asm__(\"fldcw %0\"::\"m\"(*&F));}\n"
- << "#endif\n#endif\n";
-
}
/// FindStaticTors - Given a static ctor/dtor list, unpack its contents into
return; // Found a null terminator, exit printing.
Constant *FP = CS->getOperand(1);
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
- if (CE->getOpcode() == Instruction::Cast)
+ if (CE->isCast())
FP = CE->getOperand(0);
if (Function *F = dyn_cast<Function>(FP))
StaticTors.insert(F);
// Initialize
TheModule = &M;
- IL.AddPrototypes(M);
+ TD = new TargetData(&M);
+ IL = new IntrinsicLowering(*TD);
+ IL->AddPrototypes(M);
// Ensure that all structure types have names...
Mang = new Mangler(M);
//
// Loop over the symbol table, emitting all named constants...
- printModuleTypes(M.getSymbolTable());
+ printModuleTypes(M.getTypeSymbolTable());
// Global variable declarations...
if (!M.global_empty()) {
Out << "\n/* External Global Variable Declarations */\n";
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
- if (I->hasExternalLinkage()) {
+
+ if (I->hasExternalLinkage() || I->hasExternalWeakLinkage())
Out << "extern ";
- printType(Out, I->getType()->getElementType(), Mang->getValueName(I));
- Out << ";\n";
- } else if (I->hasDLLImportLinkage()) {
+ else if (I->hasDLLImportLinkage())
Out << "__declspec(dllimport) ";
- printType(Out, I->getType()->getElementType(), Mang->getValueName(I));
- Out << ";\n";
- }
+ else
+ continue; // Internal Global
+
+ // Thread Local Storage
+ if (I->isThreadLocal())
+ Out << "__thread ";
+
+ printType(Out, I->getType()->getElementType(), false, GetValueName(I));
+
+ if (I->hasExternalWeakLinkage())
+ Out << " __EXTERNAL_WEAK__";
+ Out << ";\n";
}
}
// Don't print declarations for intrinsic functions.
if (!I->getIntrinsicID() && I->getName() != "setjmp" &&
I->getName() != "longjmp" && I->getName() != "_setjmp") {
+ if (I->hasExternalWeakLinkage())
+ Out << "extern ";
printFunctionSignature(I, true);
if (I->hasWeakLinkage() || I->hasLinkOnceLinkage())
Out << " __ATTRIBUTE_WEAK__";
+ if (I->hasExternalWeakLinkage())
+ Out << " __EXTERNAL_WEAK__";
if (StaticCtors.count(I))
Out << " __ATTRIBUTE_CTOR__";
if (StaticDtors.count(I))
Out << " __ATTRIBUTE_DTOR__";
+ if (I->hasHiddenVisibility())
+ Out << " __HIDDEN__";
if (I->hasName() && I->getName()[0] == 1)
Out << " LLVM_ASM(\"" << I->getName().c_str()+1 << "\")";
Out << "\n\n/* Global Variable Declarations */\n";
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
- if (!I->isExternal()) {
+ if (!I->isDeclaration()) {
// Ignore special globals, such as debug info.
if (getGlobalVariableClass(I))
continue;
-
+
if (I->hasInternalLinkage())
Out << "static ";
else
Out << "extern ";
- printType(Out, I->getType()->getElementType(), Mang->getValueName(I));
+
+ // Thread Local Storage
+ if (I->isThreadLocal())
+ Out << "__thread ";
+
+ printType(Out, I->getType()->getElementType(), false,
+ GetValueName(I));
if (I->hasLinkOnceLinkage())
Out << " __attribute__((common))";
else if (I->hasWeakLinkage())
Out << " __ATTRIBUTE_WEAK__";
+ else if (I->hasExternalWeakLinkage())
+ Out << " __EXTERNAL_WEAK__";
+ if (I->hasHiddenVisibility())
+ Out << " __HIDDEN__";
Out << ";\n";
}
}
Out << "\n\n/* Global Variable Definitions and Initialization */\n";
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
- if (!I->isExternal()) {
+ if (!I->isDeclaration()) {
// Ignore special globals, such as debug info.
if (getGlobalVariableClass(I))
continue;
-
+
if (I->hasInternalLinkage())
Out << "static ";
else if (I->hasDLLImportLinkage())
Out << "__declspec(dllimport) ";
else if (I->hasDLLExportLinkage())
Out << "__declspec(dllexport) ";
-
- printType(Out, I->getType()->getElementType(), Mang->getValueName(I));
+
+ // Thread Local Storage
+ if (I->isThreadLocal())
+ Out << "__thread ";
+
+ printType(Out, I->getType()->getElementType(), false,
+ GetValueName(I));
if (I->hasLinkOnceLinkage())
Out << " __attribute__((common))";
else if (I->hasWeakLinkage())
Out << " __ATTRIBUTE_WEAK__";
+ if (I->hasHiddenVisibility())
+ Out << " __HIDDEN__";
+
// If the initializer is not null, emit the initializer. If it is null,
// we try to avoid emitting large amounts of zeros. The problem with
// this, however, occurs when the variable has weak linkage. In this
Out << " = " ;
if (isa<StructType>(I->getInitializer()->getType()) ||
isa<ArrayType>(I->getInitializer()->getType()) ||
- isa<PackedType>(I->getInitializer()->getType())) {
+ isa<VectorType>(I->getInitializer()->getType())) {
Out << "{ 0 }";
} else {
// Just print it out normally.
if (!M.empty())
Out << "\n\n/* Function Bodies */\n";
+
+ // Emit some helper functions for dealing with FCMP instruction's
+ // predicates
+ Out << "static inline int llvm_fcmp_ord(double X, double Y) { ";
+ Out << "return X == X && Y == Y; }\n";
+ Out << "static inline int llvm_fcmp_uno(double X, double Y) { ";
+ Out << "return X != X || Y != Y; }\n";
+ Out << "static inline int llvm_fcmp_ueq(double X, double Y) { ";
+ Out << "return X == Y || llvm_fcmp_uno(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_une(double X, double Y) { ";
+ Out << "return X != Y; }\n";
+ Out << "static inline int llvm_fcmp_ult(double X, double Y) { ";
+ Out << "return X < Y || llvm_fcmp_uno(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_ugt(double X, double Y) { ";
+ Out << "return X > Y || llvm_fcmp_uno(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_ule(double X, double Y) { ";
+ Out << "return X <= Y || llvm_fcmp_uno(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_uge(double X, double Y) { ";
+ Out << "return X >= Y || llvm_fcmp_uno(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_oeq(double X, double Y) { ";
+ Out << "return X == Y ; }\n";
+ Out << "static inline int llvm_fcmp_one(double X, double Y) { ";
+ Out << "return X != Y && llvm_fcmp_ord(X, Y); }\n";
+ Out << "static inline int llvm_fcmp_olt(double X, double Y) { ";
+ Out << "return X < Y ; }\n";
+ Out << "static inline int llvm_fcmp_ogt(double X, double Y) { ";
+ Out << "return X > Y ; }\n";
+ Out << "static inline int llvm_fcmp_ole(double X, double Y) { ";
+ Out << "return X <= Y ; }\n";
+ Out << "static inline int llvm_fcmp_oge(double X, double Y) { ";
+ Out << "return X >= Y ; }\n";
return false;
}
if (const ConstantFP *FPC = dyn_cast<ConstantFP>(*I))
if (!isFPCSafeToPrint(FPC) && // Do not put in FPConstantMap if safe.
!FPConstantMap.count(FPC)) {
- double Val = FPC->getValue();
-
FPConstantMap[FPC] = FPCounter; // Number the FP constants
if (FPC->getType() == Type::DoubleTy) {
+ double Val = FPC->getValueAPF().convertToDouble();
Out << "static const ConstantDoubleTy FPConstant" << FPCounter++
<< " = 0x" << std::hex << DoubleToBits(Val) << std::dec
<< "ULL; /* " << Val << " */\n";
} else if (FPC->getType() == Type::FloatTy) {
+ float Val = FPC->getValueAPF().convertToFloat();
Out << "static const ConstantFloatTy FPConstant" << FPCounter++
<< " = 0x" << std::hex << FloatToBits(Val) << std::dec
<< "U; /* " << Val << " */\n";
/// printSymbolTable - Run through symbol table looking for type names. If a
/// type name is found, emit its declaration...
///
-void CWriter::printModuleTypes(const SymbolTable &ST) {
+void CWriter::printModuleTypes(const TypeSymbolTable &TST) {
+ Out << "/* Helper union for bitcasts */\n";
+ Out << "typedef union {\n";
+ Out << " unsigned int Int32;\n";
+ Out << " unsigned long long Int64;\n";
+ Out << " float Float;\n";
+ Out << " double Double;\n";
+ Out << "} llvmBitCastUnion;\n";
+
// We are only interested in the type plane of the symbol table.
- SymbolTable::type_const_iterator I = ST.type_begin();
- SymbolTable::type_const_iterator End = ST.type_end();
+ TypeSymbolTable::const_iterator I = TST.begin();
+ TypeSymbolTable::const_iterator End = TST.end();
// If there are no type names, exit early.
if (I == End) return;
// Print out forward declarations for structure types before anything else!
Out << "/* Structure forward decls */\n";
- for (; I != End; ++I)
- if (const Type *STy = dyn_cast<StructType>(I->second)) {
- std::string Name = "struct l_" + Mang->makeNameProper(I->first);
- Out << Name << ";\n";
- TypeNames.insert(std::make_pair(STy, Name));
- }
+ for (; I != End; ++I) {
+ std::string Name = "struct l_" + Mang->makeNameProper(I->first);
+ Out << Name << ";\n";
+ TypeNames.insert(std::make_pair(I->second, Name));
+ }
Out << '\n';
- // Now we can print out typedefs...
+ // Now we can print out typedefs. Above, we guaranteed that this can only be
+ // for struct or opaque types.
Out << "/* Typedefs */\n";
- for (I = ST.type_begin(); I != End; ++I) {
- const Type *Ty = cast<Type>(I->second);
+ for (I = TST.begin(); I != End; ++I) {
std::string Name = "l_" + Mang->makeNameProper(I->first);
Out << "typedef ";
- printType(Out, Ty, Name);
+ printType(Out, I->second, false, Name);
Out << ";\n";
}
// printed in the correct order.
//
Out << "/* Structure contents */\n";
- for (I = ST.type_begin(); I != End; ++I)
+ for (I = TST.begin(); I != End; ++I)
if (const StructType *STy = dyn_cast<StructType>(I->second))
// Only print out used types!
printContainedStructs(STy, StructPrinted);
// Push the struct onto the stack and recursively push all structs
// this one depends on.
//
-// TODO: Make this work properly with packed types
+// TODO: Make this work properly with vector types
//
void CWriter::printContainedStructs(const Type *Ty,
std::set<const StructType*> &StructPrinted){
// Don't walk through pointers.
- if (isa<PointerType>(Ty) || Ty->isPrimitiveType()) return;
+ if (isa<PointerType>(Ty) || Ty->isPrimitiveType() || Ty->isInteger()) return;
// Print all contained types first.
for (Type::subtype_iterator I = Ty->subtype_begin(),
if (StructPrinted.insert(STy).second) {
// Print structure type out.
std::string Name = TypeNames[STy];
- printType(Out, STy, Name, true);
+ printType(Out, STy, false, Name, true);
Out << ";\n\n";
}
}
}
void CWriter::printFunctionSignature(const Function *F, bool Prototype) {
- /// isCStructReturn - Should this function actually return a struct by-value?
- bool isCStructReturn = F->getCallingConv() == CallingConv::CSRet;
+ /// isStructReturn - Should this function actually return a struct by-value?
+ bool isStructReturn = F->getFunctionType()->isStructReturn();
if (F->hasInternalLinkage()) Out << "static ";
if (F->hasDLLImportLinkage()) Out << "__declspec(dllimport) ";
// Loop over the arguments, printing them...
const FunctionType *FT = cast<FunctionType>(F->getFunctionType());
+ const ParamAttrsList *Attrs = FT->getParamAttrs();
std::stringstream FunctionInnards;
// Print out the name...
- FunctionInnards << Mang->getValueName(F) << '(';
+ FunctionInnards << GetValueName(F) << '(';
bool PrintedArg = false;
- if (!F->isExternal()) {
+ if (!F->isDeclaration()) {
if (!F->arg_empty()) {
Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
// If this is a struct-return function, don't print the hidden
// struct-return argument.
- if (isCStructReturn) {
+ if (isStructReturn) {
assert(I != E && "Invalid struct return function!");
++I;
}
std::string ArgName;
+ unsigned Idx = 1;
for (; I != E; ++I) {
if (PrintedArg) FunctionInnards << ", ";
if (I->hasName() || !Prototype)
- ArgName = Mang->getValueName(I);
+ ArgName = GetValueName(I);
else
ArgName = "";
- printType(FunctionInnards, I->getType(), ArgName);
+ printType(FunctionInnards, I->getType(),
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(Idx, ParamAttr::SExt),
+ ArgName);
PrintedArg = true;
+ ++Idx;
}
}
} else {
// If this is a struct-return function, don't print the hidden
// struct-return argument.
- if (isCStructReturn) {
+ if (isStructReturn) {
assert(I != E && "Invalid struct return function!");
++I;
}
+ unsigned Idx = 1;
for (; I != E; ++I) {
if (PrintedArg) FunctionInnards << ", ";
- printType(FunctionInnards, *I);
+ printType(FunctionInnards, *I,
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(Idx, ParamAttr::SExt));
PrintedArg = true;
+ ++Idx;
}
}
// Get the return tpe for the function.
const Type *RetTy;
- if (!isCStructReturn)
+ if (!isStructReturn)
RetTy = F->getReturnType();
else {
// If this is a struct-return function, print the struct-return type.
}
// Print out the return type and the signature built above.
- printType(Out, RetTy, FunctionInnards.str());
+ printType(Out, RetTy,
+ /*isSigned=*/ Attrs && Attrs->paramHasAttr(0, ParamAttr::SExt),
+ FunctionInnards.str());
+}
+
+static inline bool isFPIntBitCast(const Instruction &I) {
+ if (!isa<BitCastInst>(I))
+ return false;
+ const Type *SrcTy = I.getOperand(0)->getType();
+ const Type *DstTy = I.getType();
+ return (SrcTy->isFloatingPoint() && DstTy->isInteger()) ||
+ (DstTy->isFloatingPoint() && SrcTy->isInteger());
}
void CWriter::printFunction(Function &F) {
+ /// isStructReturn - Should this function actually return a struct by-value?
+ bool isStructReturn = F.getFunctionType()->isStructReturn();
+
printFunctionSignature(&F, false);
Out << " {\n";
// If this is a struct return function, handle the result with magic.
- if (F.getCallingConv() == CallingConv::CSRet) {
+ if (isStructReturn) {
const Type *StructTy =
cast<PointerType>(F.arg_begin()->getType())->getElementType();
Out << " ";
- printType(Out, StructTy, "StructReturn");
+ printType(Out, StructTy, false, "StructReturn");
Out << "; /* Struct return temporary */\n";
Out << " ";
- printType(Out, F.arg_begin()->getType(), Mang->getValueName(F.arg_begin()));
+ printType(Out, F.arg_begin()->getType(), false,
+ GetValueName(F.arg_begin()));
Out << " = &StructReturn;\n";
}
bool PrintedVar = false;
// print local variable information for the function
- for (inst_iterator I = inst_begin(&F), E = inst_end(&F); I != E; ++I)
+ for (inst_iterator I = inst_begin(&F), E = inst_end(&F); I != E; ++I) {
if (const AllocaInst *AI = isDirectAlloca(&*I)) {
Out << " ";
- printType(Out, AI->getAllocatedType(), Mang->getValueName(AI));
+ printType(Out, AI->getAllocatedType(), false, GetValueName(AI));
Out << "; /* Address-exposed local */\n";
PrintedVar = true;
} else if (I->getType() != Type::VoidTy && !isInlinableInst(*I)) {
Out << " ";
- printType(Out, I->getType(), Mang->getValueName(&*I));
+ printType(Out, I->getType(), false, GetValueName(&*I));
Out << ";\n";
if (isa<PHINode>(*I)) { // Print out PHI node temporaries as well...
Out << " ";
- printType(Out, I->getType(),
- Mang->getValueName(&*I)+"__PHI_TEMPORARY");
+ printType(Out, I->getType(), false,
+ GetValueName(&*I)+"__PHI_TEMPORARY");
Out << ";\n";
}
PrintedVar = true;
}
+ // We need a temporary for the BitCast to use so it can pluck a value out
+ // of a union to do the BitCast. This is separate from the need for a
+ // variable to hold the result of the BitCast.
+ if (isFPIntBitCast(*I)) {
+ Out << " llvmBitCastUnion " << GetValueName(&*I)
+ << "__BITCAST_TEMPORARY;\n";
+ PrintedVar = true;
+ }
+ }
if (PrintedVar)
Out << '\n';
break;
}
- if (NeedsLabel) Out << Mang->getValueName(BB) << ":\n";
+ if (NeedsLabel) Out << GetValueName(BB) << ":\n";
// Output all of the instructions in the basic block...
for (BasicBlock::iterator II = BB->begin(), E = --BB->end(); II != E;
++II) {
if (!isInlinableInst(*II) && !isDirectAlloca(II)) {
- if (II->getType() != Type::VoidTy)
+ if (II->getType() != Type::VoidTy && !isInlineAsm(*II))
outputLValue(II);
else
Out << " ";
//
void CWriter::visitReturnInst(ReturnInst &I) {
// If this is a struct return function, return the temporary struct.
- if (I.getParent()->getParent()->getCallingConv() == CallingConv::CSRet) {
+ bool isStructReturn = I.getParent()->getParent()->
+ getFunctionType()->isStructReturn();
+
+ if (isStructReturn) {
Out << " return StructReturn;\n";
return;
}
Value *IV = PN->getIncomingValueForBlock(CurBlock);
if (!isa<UndefValue>(IV)) {
Out << std::string(Indent, ' ');
- Out << " " << Mang->getValueName(I) << "__PHI_TEMPORARY = ";
+ Out << " " << GetValueName(I) << "__PHI_TEMPORARY = ";
writeOperand(IV);
Out << "; /* for PHI node */\n";
}
// We must cast the results of binary operations which might be promoted.
bool needsCast = false;
- if ((I.getType() == Type::UByteTy) || (I.getType() == Type::SByteTy)
- || (I.getType() == Type::UShortTy) || (I.getType() == Type::ShortTy)
+ if ((I.getType() == Type::Int8Ty) || (I.getType() == Type::Int16Ty)
|| (I.getType() == Type::FloatTy)) {
needsCast = true;
Out << "((";
- printType(Out, I.getType());
+ printType(Out, I.getType(), false);
Out << ")(";
}
writeOperandWithCast(I.getOperand(0), I.getOpcode());
switch (I.getOpcode()) {
- case Instruction::Add: Out << " + "; break;
- case Instruction::Sub: Out << " - "; break;
- case Instruction::Mul: Out << '*'; break;
+ case Instruction::Add: Out << " + "; break;
+ case Instruction::Sub: Out << " - "; break;
+ case Instruction::Mul: Out << " * "; break;
case Instruction::URem:
case Instruction::SRem:
- case Instruction::FRem: Out << '%'; break;
+ case Instruction::FRem: Out << " % "; break;
case Instruction::UDiv:
case Instruction::SDiv:
- case Instruction::FDiv: Out << '/'; break;
- case Instruction::And: Out << " & "; break;
- case Instruction::Or: Out << " | "; break;
- case Instruction::Xor: Out << " ^ "; break;
- case Instruction::SetEQ: Out << " == "; break;
- case Instruction::SetNE: Out << " != "; break;
- case Instruction::SetLE: Out << " <= "; break;
- case Instruction::SetGE: Out << " >= "; break;
- case Instruction::SetLT: Out << " < "; break;
- case Instruction::SetGT: Out << " > "; break;
+ case Instruction::FDiv: Out << " / "; break;
+ case Instruction::And: Out << " & "; break;
+ case Instruction::Or: Out << " | "; break;
+ case Instruction::Xor: Out << " ^ "; break;
case Instruction::Shl : Out << " << "; break;
- case Instruction::Shr : Out << " >> "; break;
- default: std::cerr << "Invalid operator type!" << I; abort();
+ case Instruction::LShr:
+ case Instruction::AShr: Out << " >> "; break;
+ default: cerr << "Invalid operator type!" << I; abort();
}
writeOperandWithCast(I.getOperand(1), I.getOpcode());
}
}
-void CWriter::visitCastInst(CastInst &I) {
- if (I.getType() == Type::BoolTy) {
- Out << '(';
- writeOperand(I.getOperand(0));
- Out << " != 0)";
+void CWriter::visitICmpInst(ICmpInst &I) {
+ // We must cast the results of icmp which might be promoted.
+ bool needsCast = false;
+
+ // Write out the cast of the instruction's value back to the proper type
+ // if necessary.
+ bool NeedsClosingParens = writeInstructionCast(I);
+
+ // Certain icmp predicate require the operand to be forced to a specific type
+ // so we use writeOperandWithCast here instead of writeOperand. Similarly
+ // below for operand 1
+ writeOperandWithCast(I.getOperand(0), I.getPredicate());
+
+ switch (I.getPredicate()) {
+ case ICmpInst::ICMP_EQ: Out << " == "; break;
+ case ICmpInst::ICMP_NE: Out << " != "; break;
+ case ICmpInst::ICMP_ULE:
+ case ICmpInst::ICMP_SLE: Out << " <= "; break;
+ case ICmpInst::ICMP_UGE:
+ case ICmpInst::ICMP_SGE: Out << " >= "; break;
+ case ICmpInst::ICMP_ULT:
+ case ICmpInst::ICMP_SLT: Out << " < "; break;
+ case ICmpInst::ICMP_UGT:
+ case ICmpInst::ICMP_SGT: Out << " > "; break;
+ default: cerr << "Invalid icmp predicate!" << I; abort();
+ }
+
+ writeOperandWithCast(I.getOperand(1), I.getPredicate());
+ if (NeedsClosingParens)
+ Out << "))";
+
+ if (needsCast) {
+ Out << "))";
+ }
+}
+
+void CWriter::visitFCmpInst(FCmpInst &I) {
+ if (I.getPredicate() == FCmpInst::FCMP_FALSE) {
+ Out << "0";
return;
}
- Out << '(';
- printType(Out, I.getType());
- Out << ')';
- if (isa<PointerType>(I.getType())&&I.getOperand(0)->getType()->isIntegral() ||
- isa<PointerType>(I.getOperand(0)->getType())&&I.getType()->isIntegral()) {
- // Avoid "cast to pointer from integer of different size" warnings
- Out << "(long)";
+ if (I.getPredicate() == FCmpInst::FCMP_TRUE) {
+ Out << "1";
+ return;
}
+ const char* op = 0;
+ switch (I.getPredicate()) {
+ default: assert(0 && "Illegal FCmp predicate");
+ case FCmpInst::FCMP_ORD: op = "ord"; break;
+ case FCmpInst::FCMP_UNO: op = "uno"; break;
+ case FCmpInst::FCMP_UEQ: op = "ueq"; break;
+ case FCmpInst::FCMP_UNE: op = "une"; break;
+ case FCmpInst::FCMP_ULT: op = "ult"; break;
+ case FCmpInst::FCMP_ULE: op = "ule"; break;
+ case FCmpInst::FCMP_UGT: op = "ugt"; break;
+ case FCmpInst::FCMP_UGE: op = "uge"; break;
+ case FCmpInst::FCMP_OEQ: op = "oeq"; break;
+ case FCmpInst::FCMP_ONE: op = "one"; break;
+ case FCmpInst::FCMP_OLT: op = "olt"; break;
+ case FCmpInst::FCMP_OLE: op = "ole"; break;
+ case FCmpInst::FCMP_OGT: op = "ogt"; break;
+ case FCmpInst::FCMP_OGE: op = "oge"; break;
+ }
+
+ Out << "llvm_fcmp_" << op << "(";
+ // Write the first operand
writeOperand(I.getOperand(0));
+ Out << ", ";
+ // Write the second operand
+ writeOperand(I.getOperand(1));
+ Out << ")";
+}
+
+static const char * getFloatBitCastField(const Type *Ty) {
+ switch (Ty->getTypeID()) {
+ default: assert(0 && "Invalid Type");
+ case Type::FloatTyID: return "Float";
+ case Type::DoubleTyID: return "Double";
+ case Type::IntegerTyID: {
+ unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
+ if (NumBits <= 32)
+ return "Int32";
+ else
+ return "Int64";
+ }
+ }
+}
+
+void CWriter::visitCastInst(CastInst &I) {
+ const Type *DstTy = I.getType();
+ const Type *SrcTy = I.getOperand(0)->getType();
+ Out << '(';
+ if (isFPIntBitCast(I)) {
+ // These int<->float and long<->double casts need to be handled specially
+ Out << GetValueName(&I) << "__BITCAST_TEMPORARY."
+ << getFloatBitCastField(I.getOperand(0)->getType()) << " = ";
+ writeOperand(I.getOperand(0));
+ Out << ", " << GetValueName(&I) << "__BITCAST_TEMPORARY."
+ << getFloatBitCastField(I.getType());
+ } else {
+ printCast(I.getOpcode(), SrcTy, DstTy);
+ if (I.getOpcode() == Instruction::SExt && SrcTy == Type::Int1Ty) {
+ // Make sure we really get a sext from bool by subtracing the bool from 0
+ Out << "0-";
+ }
+ writeOperand(I.getOperand(0));
+ if (DstTy == Type::Int1Ty &&
+ (I.getOpcode() == Instruction::Trunc ||
+ I.getOpcode() == Instruction::FPToUI ||
+ I.getOpcode() == Instruction::FPToSI ||
+ I.getOpcode() == Instruction::PtrToInt)) {
+ // Make sure we really get a trunc to bool by anding the operand with 1
+ Out << "&1u";
+ }
+ }
+ Out << ')';
}
void CWriter::visitSelectInst(SelectInst &I) {
void CWriter::lowerIntrinsics(Function &F) {
- for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
+ // This is used to keep track of intrinsics that get generated to a lowered
+ // function. We must generate the prototypes before the function body which
+ // will only be expanded on first use (by the loop below).
+ std::vector<Function*> prototypesToGen;
+
+ // Examine all the instructions in this function to find the intrinsics that
+ // need to be lowered.
+ for (Function::iterator BB = F.begin(), EE = F.end(); BB != EE; ++BB)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; )
if (CallInst *CI = dyn_cast<CallInst>(I++))
if (Function *F = CI->getCalledFunction())
if (CI != &BB->front())
Before = prior(BasicBlock::iterator(CI));
- IL.LowerIntrinsicCall(CI);
+ IL->LowerIntrinsicCall(CI);
if (Before) { // Move iterator to instruction after call
I = Before; ++I;
} else {
I = BB->begin();
}
+ // If the intrinsic got lowered to another call, and that call has
+ // a definition then we need to make sure its prototype is emitted
+ // before any calls to it.
+ if (CallInst *Call = dyn_cast<CallInst>(I))
+ if (Function *NewF = Call->getCalledFunction())
+ if (!NewF->isDeclaration())
+ prototypesToGen.push_back(NewF);
+
break;
}
-}
+ // We may have collected some prototypes to emit in the loop above.
+ // Emit them now, before the function that uses them is emitted. But,
+ // be careful not to emit them twice.
+ std::vector<Function*>::iterator I = prototypesToGen.begin();
+ std::vector<Function*>::iterator E = prototypesToGen.end();
+ for ( ; I != E; ++I) {
+ if (intrinsicPrototypesAlreadyGenerated.insert(*I).second) {
+ Out << '\n';
+ printFunctionSignature(*I, true);
+ Out << ";\n";
+ }
+ }
+}
void CWriter::visitCallInst(CallInst &I) {
+ //check if we have inline asm
+ if (isInlineAsm(I)) {
+ visitInlineAsm(I);
+ return;
+ }
+
bool WroteCallee = false;
// Handle intrinsic function calls first...
Out << ", ";
// Output the last argument to the enclosing function...
if (I.getParent()->getParent()->arg_empty()) {
- std::cerr << "The C backend does not currently support zero "
- << "argument varargs functions, such as '"
- << I.getParent()->getParent()->getName() << "'!\n";
+ cerr << "The C backend does not currently support zero "
+ << "argument varargs functions, such as '"
+ << I.getParent()->getParent()->getName() << "'!\n";
abort();
}
writeOperand(--I.getParent()->getParent()->arg_end());
Out << ')';
return;
case Intrinsic::setjmp:
-#if defined(HAVE__SETJMP) && defined(HAVE__LONGJMP)
- Out << "_"; // Use _setjmp on systems that support it!
-#endif
Out << "setjmp(*(jmp_buf*)";
writeOperand(I.getOperand(1));
Out << ')';
return;
case Intrinsic::longjmp:
-#if defined(HAVE__SETJMP) && defined(HAVE__LONGJMP)
- Out << "_"; // Use _longjmp on systems that support it!
-#endif
Out << "longjmp(*(jmp_buf*)";
writeOperand(I.getOperand(1));
Out << ", ";
Value *Callee = I.getCalledValue();
+ const PointerType *PTy = cast<PointerType>(Callee->getType());
+ const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
+
// If this is a call to a struct-return function, assign to the first
// parameter instead of passing it to the call.
- bool isStructRet = I.getCallingConv() == CallingConv::CSRet;
+ bool isStructRet = FTy->isStructReturn();
if (isStructRet) {
Out << "*(";
writeOperand(I.getOperand(1));
}
if (I.isTailCall()) Out << " /*tail*/ ";
-
- const PointerType *PTy = cast<PointerType>(Callee->getType());
- const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
if (!WroteCallee) {
// If this is an indirect call to a struct return function, we need to cast
// match exactly.
//
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Callee))
- if (CE->getOpcode() == Instruction::Cast)
+ if (CE->isCast())
if (Function *RF = dyn_cast<Function>(CE->getOperand(0))) {
NeedsCast = true;
Callee = RF;
++ArgNo;
}
+ const ParamAttrsList *Attrs = FTy->getParamAttrs();
bool PrintedArg = false;
- for (; AI != AE; ++AI, ++ArgNo) {
+ unsigned Idx = 1;
+ for (; AI != AE; ++AI, ++ArgNo, ++Idx) {
if (PrintedArg) Out << ", ";
if (ArgNo < NumDeclaredParams &&
(*AI)->getType() != FTy->getParamType(ArgNo)) {
Out << '(';
- printType(Out, FTy->getParamType(ArgNo));
+ printType(Out, FTy->getParamType(ArgNo),
+ /*isSigned=*/Attrs && Attrs->paramHasAttr(Idx, ParamAttr::SExt));
Out << ')';
}
writeOperand(*AI);
Out << ')';
}
+
+//This converts the llvm constraint string to something gcc is expecting.
+//TODO: work out platform independent constraints and factor those out
+// of the per target tables
+// handle multiple constraint codes
+std::string CWriter::InterpretASMConstraint(InlineAsm::ConstraintInfo& c) {
+
+ assert(c.Codes.size() == 1 && "Too many asm constraint codes to handle");
+
+ const char** table = 0;
+
+ //Grab the translation table from TargetAsmInfo if it exists
+ if (!TAsm) {
+ std::string E;
+ const TargetMachineRegistry::Entry* Match =
+ TargetMachineRegistry::getClosestStaticTargetForModule(*TheModule, E);
+ if (Match) {
+ //Per platform Target Machines don't exist, so create it
+ // this must be done only once
+ const TargetMachine* TM = Match->CtorFn(*TheModule, "");
+ TAsm = TM->getTargetAsmInfo();
+ }
+ }
+ if (TAsm)
+ table = TAsm->getAsmCBE();
+
+ //Search the translation table if it exists
+ for (int i = 0; table && table[i]; i += 2)
+ if (c.Codes[0] == table[i])
+ return table[i+1];
+
+ //default is identity
+ return c.Codes[0];
+}
+
+//TODO: import logic from AsmPrinter.cpp
+static std::string gccifyAsm(std::string asmstr) {
+ for (std::string::size_type i = 0; i != asmstr.size(); ++i)
+ if (asmstr[i] == '\n')
+ asmstr.replace(i, 1, "\\n");
+ else if (asmstr[i] == '\t')
+ asmstr.replace(i, 1, "\\t");
+ else if (asmstr[i] == '$') {
+ if (asmstr[i + 1] == '{') {
+ std::string::size_type a = asmstr.find_first_of(':', i + 1);
+ std::string::size_type b = asmstr.find_first_of('}', i + 1);
+ std::string n = "%" +
+ asmstr.substr(a + 1, b - a - 1) +
+ asmstr.substr(i + 2, a - i - 2);
+ asmstr.replace(i, b - i + 1, n);
+ i += n.size() - 1;
+ } else
+ asmstr.replace(i, 1, "%");
+ }
+ else if (asmstr[i] == '%')//grr
+ { asmstr.replace(i, 1, "%%"); ++i;}
+
+ return asmstr;
+}
+
+//TODO: assumptions about what consume arguments from the call are likely wrong
+// handle communitivity
+void CWriter::visitInlineAsm(CallInst &CI) {
+ InlineAsm* as = cast<InlineAsm>(CI.getOperand(0));
+ std::vector<InlineAsm::ConstraintInfo> Constraints = as->ParseConstraints();
+ std::vector<std::pair<std::string, Value*> > Input;
+ std::vector<std::pair<std::string, Value*> > Output;
+ std::string Clobber;
+ int count = CI.getType() == Type::VoidTy ? 1 : 0;
+ for (std::vector<InlineAsm::ConstraintInfo>::iterator I = Constraints.begin(),
+ E = Constraints.end(); I != E; ++I) {
+ assert(I->Codes.size() == 1 && "Too many asm constraint codes to handle");
+ std::string c =
+ InterpretASMConstraint(*I);
+ switch(I->Type) {
+ default:
+ assert(0 && "Unknown asm constraint");
+ break;
+ case InlineAsm::isInput: {
+ if (c.size()) {
+ Input.push_back(std::make_pair(c, count ? CI.getOperand(count) : &CI));
+ ++count; //consume arg
+ }
+ break;
+ }
+ case InlineAsm::isOutput: {
+ if (c.size()) {
+ Output.push_back(std::make_pair("="+((I->isEarlyClobber ? "&" : "")+c),
+ count ? CI.getOperand(count) : &CI));
+ ++count; //consume arg
+ }
+ break;
+ }
+ case InlineAsm::isClobber: {
+ if (c.size())
+ Clobber += ",\"" + c + "\"";
+ break;
+ }
+ }
+ }
+
+ //fix up the asm string for gcc
+ std::string asmstr = gccifyAsm(as->getAsmString());
+
+ Out << "__asm__ volatile (\"" << asmstr << "\"\n";
+ Out << " :";
+ for (std::vector<std::pair<std::string, Value*> >::iterator I = Output.begin(),
+ E = Output.end(); I != E; ++I) {
+ Out << "\"" << I->first << "\"(";
+ writeOperandRaw(I->second);
+ Out << ")";
+ if (I + 1 != E)
+ Out << ",";
+ }
+ Out << "\n :";
+ for (std::vector<std::pair<std::string, Value*> >::iterator I = Input.begin(),
+ E = Input.end(); I != E; ++I) {
+ Out << "\"" << I->first << "\"(";
+ writeOperandRaw(I->second);
+ Out << ")";
+ if (I + 1 != E)
+ Out << ",";
+ }
+ if (Clobber.size())
+ Out << "\n :" << Clobber.substr(1);
+ Out << ")";
+}
+
void CWriter::visitMallocInst(MallocInst &I) {
assert(0 && "lowerallocations pass didn't work!");
}
Out << '*';
if (I.isVolatile()) {
Out << "((";
- printType(Out, I.getType(), "volatile*");
+ printType(Out, I.getType(), false, "volatile*");
Out << ")";
}
Out << '*';
if (I.isVolatile()) {
Out << "((";
- printType(Out, I.getOperand(0)->getType(), " volatile*");
+ printType(Out, I.getOperand(0)->getType(), false, " volatile*");
Out << ")";
}
writeOperand(I.getPointerOperand());
if (I.isVolatile()) Out << ')';
Out << " = ";
- writeOperand(I.getOperand(0));
+ Value *Operand = I.getOperand(0);
+ Constant *BitMask = 0;
+ if (const IntegerType* ITy = dyn_cast<IntegerType>(Operand->getType()))
+ if (!ITy->isPowerOf2ByteWidth())
+ // We have a bit width that doesn't match an even power-of-2 byte
+ // size. Consequently we must & the value with the type's bit mask
+ BitMask = ConstantInt::get(ITy, ITy->getBitMask());
+ if (BitMask)
+ Out << "((";
+ writeOperand(Operand);
+ if (BitMask) {
+ Out << ") & ";
+ printConstant(BitMask);
+ Out << ")";
+ }
}
void CWriter::visitGetElementPtrInst(GetElementPtrInst &I) {
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