#include "llvm/DerivedTypes.h"
#include "llvm/Constants.h"
+// Handle the Pass registration stuff neccesary to use TargetData's.
+namespace {
+ // Register the default SparcV9 implementation...
+ RegisterPass<TargetData> X("targetdata", "Target Data Layout");
+}
+
+
static inline void getTypeInfo(const Type *Ty, const TargetData *TD,
uint64_t &Size, unsigned char &Alignment);
//===----------------------------------------------------------------------===//
TargetData::TargetData(const std::string &TargetName,
- unsigned char IntRegSize = 8, unsigned char PtrSize = 8,
- unsigned char PtrAl = 8, unsigned char DoubleAl = 8,
- unsigned char FloatAl = 4, unsigned char LongAl = 8,
- unsigned char IntAl = 4, unsigned char ShortAl = 2,
- unsigned char ByteAl = 1)
+ bool isLittleEndian,
+ unsigned char IntRegSize, unsigned char PtrSize,
+ unsigned char PtrAl, unsigned char DoubleAl,
+ unsigned char FloatAl, unsigned char LongAl,
+ unsigned char IntAl, unsigned char ShortAl,
+ unsigned char ByteAl)
: AID(AnnotationManager::getID("TargetData::" + TargetName)) {
AnnotationManager::registerAnnotationFactory(AID, TypeAnFactory, this);
+ LittleEndian = isLittleEndian;
IntegerRegSize = IntRegSize;
PointerSize = PtrSize;
PointerAlignment = PtrAl;
uint64_t TargetData::getIndexedOffset(const Type *ptrTy,
const std::vector<Value*> &Idx) const {
- const PointerType *PtrTy = cast<const PointerType>(ptrTy);
+ const Type *Ty = ptrTy;
+ assert(isa<PointerType>(Ty) && "Illegal argument for getIndexedOffset()");
uint64_t Result = 0;
- // Get the type pointed to...
- const Type *Ty = PtrTy->getElementType();
+ for (unsigned CurIDX = 0; CurIDX != Idx.size(); ++CurIDX) {
+ if (Idx[CurIDX]->getType() == Type::LongTy) {
+ // Update Ty to refer to current element
+ Ty = cast<SequentialType>(Ty)->getElementType();
- for (unsigned CurIDX = 0; CurIDX < Idx.size(); ++CurIDX) {
- if (Idx[CurIDX]->getType() == Type::UIntTy) {
// Get the array index and the size of each array element.
- // Both must be known constants, or this will fail.
- unsigned arrayIdx = cast<ConstantUInt>(Idx[CurIDX])->getValue();
- uint64_t elementSize = this->getTypeSize(Ty);
- Result += arrayIdx * elementSize;
-
+ // Both must be known constants, or the index shd be 0; else this fails.
+ int64_t arrayIdx = cast<ConstantSInt>(Idx[CurIDX])->getValue();
+ Result += arrayIdx == 0? 0
+ : (uint64_t) (arrayIdx * (int64_t) getTypeSize(Ty));
+
} else if (const StructType *STy = dyn_cast<const StructType>(Ty)) {
assert(Idx[CurIDX]->getType() == Type::UByteTy && "Illegal struct idx");
unsigned FieldNo = cast<ConstantUInt>(Idx[CurIDX])->getValue();
// Add in the offset, as calculated by the structure layout info...
assert(FieldNo < Layout->MemberOffsets.size() &&"FieldNo out of range!");
Result += Layout->MemberOffsets[FieldNo];
-
+
// Update Ty to refer to current element
Ty = STy->getElementTypes()[FieldNo];