//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetData.h"
+#include "llvm/Module.h"
#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, unsigned char PtrSize,
- unsigned char PtrAl, unsigned char DoubleAl,
- unsigned char FloatAl, unsigned char LongAl,
- unsigned char IntAl, unsigned char ShortAl,
- unsigned char ByteAl)
+ bool isLittleEndian, 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);
- IntegerRegSize = IntRegSize;
+ // If this assert triggers, a pass "required" TargetData information, but the
+ // top level tool did not provide once for it. We do not want to default
+ // construct, or else we might end up using a bad endianness or pointer size!
+ //
+ assert(!TargetName.empty() &&
+ "ERROR: Tool did not specify a target data to use!");
+
+ LittleEndian = isLittleEndian;
PointerSize = PtrSize;
PointerAlignment = PtrAl;
DoubleAlignment = DoubleAl;
+ assert(DoubleAlignment == PtrAl &&
+ "Double alignment and pointer alignment agree for now!");
FloatAlignment = FloatAl;
LongAlignment = LongAl;
IntAlignment = IntAl;
ByteAlignment = ByteAl;
}
+TargetData::TargetData(const std::string &ToolName, const Module *M)
+ : AID(AnnotationManager::getID("TargetData::" + ToolName)) {
+ AnnotationManager::registerAnnotationFactory(AID, TypeAnFactory, this);
+
+ LittleEndian = M->isLittleEndian();
+ PointerSize = M->has32BitPointers() ? 4 : 8;
+ PointerAlignment = PointerSize;
+ DoubleAlignment = PointerSize;
+ FloatAlignment = 4;
+ LongAlignment = 8;
+ IntAlignment = 4;
+ ShortAlignment = 2;
+ ByteAlignment = 1;
+}
+
TargetData::~TargetData() {
AnnotationManager::registerAnnotationFactory(AID, 0); // Deregister factory
}
assert(isa<PointerType>(Ty) && "Illegal argument for getIndexedOffset()");
uint64_t Result = 0;
- for (unsigned CurIDX = 0; CurIDX < Idx.size(); ++CurIDX) {
- if (Idx[CurIDX]->getType() == Type::UIntTy) {
+ 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();
// Get the array index and the size of each array element.
- // Both must be known constants, or this will fail.
- // Also, the arrayIdx needs to be sign-extended from 32 bits to uint64_t
- // since uint is not normally sign-extended when cast to uint64_t.
- uint64_t elementSize = this->getTypeSize(Ty);
- uint64_t arrayIdx = cast<ConstantUInt>(Idx[CurIDX])->getValue();
- arrayIdx = (uint64_t) (int) arrayIdx; // sign-extend from 32 to 64 bits
- 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");
// Update Ty to refer to current element
Ty = STy->getElementTypes()[FieldNo];
-
- } else if (isa<const ArrayType>(Ty)) {
- assert(0 && "Loading from arrays not implemented yet!");
} else {
assert(0 && "Indexing type that is not struct or array?");
return 0; // Load directly through ptr