using namespace llvm;
bool AsmPrinter::doInitialization(Module &M) {
- Mang = new Mangler(M);
+ Mang = new Mangler(M, GlobalPrefix);
return false;
}
void AsmPrinter::setupMachineFunction(MachineFunction &MF) {
// What's my mangled name?
CurrentFnName = Mang->getValueName((Value*)MF.getFunction());
-
}
+// emitAlignment - Emit an alignment directive to the specified power of two.
+void AsmPrinter::emitAlignment(unsigned NumBits) const {
+ if (AlignmentIsInBytes) NumBits = 1 << NumBits;
+ O << AlignDirective << NumBits << "\n";
+}
+/// emitZeros - Emit a block of zeros.
+///
+void AsmPrinter::emitZeros(uint64_t NumZeros) const {
+ if (NumZeros) {
+ if (ZeroDirective)
+ O << ZeroDirective << NumZeros << "\n";
+ else {
+ for (; NumZeros; --NumZeros)
+ O << Data8bitsDirective << "0\n";
+ }
+ }
+}
// Print out the specified constant, without a storage class. Only the
// constants valid in constant expressions can occur here.
void AsmPrinter::emitConstantValueOnly(const Constant *CV) {
- if (CV->isNullValue())
+ if (CV->isNullValue() || isa<UndefValue>(CV))
O << "0";
else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
assert(CB == ConstantBool::True);
// generate a symbolic expression for the byte address
const Constant *ptrVal = CE->getOperand(0);
std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
- if (unsigned Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
- O << "(";
+ if (int64_t Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
+ if (Offset)
+ O << "(";
emitConstantValueOnly(ptrVal);
- O << ") + " << Offset;
+ if (Offset > 0)
+ O << ") + " << Offset;
+ else if (Offset < 0)
+ O << ") - " << -Offset;
} else {
emitConstantValueOnly(ptrVal);
}
assert(0 && "Unknown constant value!");
}
}
+
+/// toOctal - Convert the low order bits of X into an octal digit.
+///
+static inline char toOctal(int X) {
+ return (X&7)+'0';
+}
+
+/// getAsCString - Return the specified array as a C compatible string, only if
+/// the predicate isString is true.
+///
+static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
+ assert(CVA->isString() && "Array is not string compatible!");
+
+ O << "\"";
+ for (unsigned i = 0; i != CVA->getNumOperands(); ++i) {
+ unsigned char C =
+ (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
+
+ if (C == '"') {
+ O << "\\\"";
+ } else if (C == '\\') {
+ O << "\\\\";
+ } else if (isprint(C)) {
+ O << C;
+ } else {
+ switch(C) {
+ case '\b': O << "\\b"; break;
+ case '\f': O << "\\f"; break;
+ case '\n': O << "\\n"; break;
+ case '\r': O << "\\r"; break;
+ case '\t': O << "\\t"; break;
+ default:
+ O << '\\';
+ O << toOctal(C >> 6);
+ O << toOctal(C >> 3);
+ O << toOctal(C >> 0);
+ break;
+ }
+ }
+ }
+ O << "\"";
+}
+
+/// emitGlobalConstant - Print a general LLVM constant to the .s file.
+///
+void AsmPrinter::emitGlobalConstant(const Constant *CV) {
+ const TargetData &TD = TM.getTargetData();
+
+ if (CV->isNullValue() || isa<UndefValue>(CV)) {
+ emitZeros(TD.getTypeSize(CV->getType()));
+ return;
+ } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
+ if (CVA->isString()) {
+ O << AsciiDirective;
+ printAsCString(O, CVA);
+ O << "\n";
+ } else { // Not a string. Print the values in successive locations
+ for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
+ emitGlobalConstant(CVA->getOperand(i));
+ }
+ return;
+ } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
+ // Print the fields in successive locations. Pad to align if needed!
+ const StructLayout *cvsLayout = TD.getStructLayout(CVS->getType());
+ uint64_t sizeSoFar = 0;
+ for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
+ const Constant* field = CVS->getOperand(i);
+
+ // Check if padding is needed and insert one or more 0s.
+ uint64_t fieldSize = TD.getTypeSize(field->getType());
+ uint64_t padSize = ((i == e-1? cvsLayout->StructSize
+ : cvsLayout->MemberOffsets[i+1])
+ - cvsLayout->MemberOffsets[i]) - fieldSize;
+ sizeSoFar += fieldSize + padSize;
+
+ // Now print the actual field value
+ emitGlobalConstant(field);
+
+ // Insert the field padding unless it's zero bytes...
+ emitZeros(padSize);
+ }
+ assert(sizeSoFar == cvsLayout->StructSize &&
+ "Layout of constant struct may be incorrect!");
+ return;
+ } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
+ // FP Constants are printed as integer constants to avoid losing
+ // precision...
+ double Val = CFP->getValue();
+ if (CFP->getType() == Type::DoubleTy) {
+ union DU { // Abide by C TBAA rules
+ double FVal;
+ uint64_t UVal;
+ } U;
+ U.FVal = Val;
+
+ if (Data64bitsDirective)
+ O << Data64bitsDirective << U.UVal << "\t" << CommentString
+ << " double value: " << Val << "\n";
+ else if (TD.isBigEndian()) {
+ O << Data32bitsDirective << unsigned(U.UVal >> 32)
+ << "\t" << CommentString << " double most significant word "
+ << Val << "\n";
+ O << Data32bitsDirective << unsigned(U.UVal)
+ << "\t" << CommentString << " double least significant word "
+ << Val << "\n";
+ } else {
+ O << Data32bitsDirective << unsigned(U.UVal)
+ << "\t" << CommentString << " double least significant word " << Val
+ << "\n";
+ O << Data32bitsDirective << unsigned(U.UVal >> 32)
+ << "\t" << CommentString << " double most significant word " << Val
+ << "\n";
+ }
+ return;
+ } else {
+ union FU { // Abide by C TBAA rules
+ float FVal;
+ int32_t UVal;
+ } U;
+ U.FVal = (float)Val;
+
+ O << Data32bitsDirective << U.UVal << "\t" << CommentString
+ << " float " << Val << "\n";
+ return;
+ }
+ } else if (CV->getType() == Type::ULongTy || CV->getType() == Type::LongTy) {
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+ uint64_t Val = CI->getRawValue();
+
+ if (Data64bitsDirective)
+ O << Data64bitsDirective << Val << "\n";
+ else if (TD.isBigEndian()) {
+ O << Data32bitsDirective << unsigned(Val >> 32)
+ << "\t" << CommentString << " Double-word most significant word "
+ << Val << "\n";
+ O << Data32bitsDirective << unsigned(Val)
+ << "\t" << CommentString << " Double-word least significant word "
+ << Val << "\n";
+ } else {
+ O << Data32bitsDirective << unsigned(Val)
+ << "\t" << CommentString << " Double-word least significant word "
+ << Val << "\n";
+ O << Data32bitsDirective << unsigned(Val >> 32)
+ << "\t" << CommentString << " Double-word most significant word "
+ << Val << "\n";
+ }
+ return;
+ }
+ }
+
+ const Type *type = CV->getType();
+ switch (type->getTypeID()) {
+ case Type::BoolTyID:
+ case Type::UByteTyID: case Type::SByteTyID:
+ O << Data8bitsDirective;
+ break;
+ case Type::UShortTyID: case Type::ShortTyID:
+ O << Data16bitsDirective;
+ break;
+ case Type::PointerTyID:
+ if (TD.getPointerSize() == 8) {
+ O << Data64bitsDirective;
+ break;
+ }
+ //Fall through for pointer size == int size
+ case Type::UIntTyID: case Type::IntTyID:
+ O << Data32bitsDirective;
+ break;
+ case Type::ULongTyID: case Type::LongTyID:
+ assert (0 && "Should have already output double-word constant.");
+ case Type::FloatTyID: case Type::DoubleTyID:
+ assert (0 && "Should have already output floating point constant.");
+ default:
+ assert (0 && "Can't handle printing this type of thing");
+ break;
+ }
+ emitConstantValueOnly(CV);
+ O << "\n";
+}
projects / oota-llvm.git / blobdiff