//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
INTEGER_ALIGN = 'i', ///< Integer type alignment
VECTOR_ALIGN = 'v', ///< Vector type alignment
FLOAT_ALIGN = 'f', ///< Floating point type alignment
- AGGREGATE_ALIGN = 'a' ///< Aggregate alignment
+ AGGREGATE_ALIGN = 'a', ///< Aggregate alignment
+ STACK_ALIGN = 's' ///< Stack objects alignment
};
/// Target alignment element.
///
void setAlignment(AlignTypeEnum align_type, unsigned char abi_align,
unsigned char pref_align, uint32_t bit_width);
unsigned getAlignmentInfo(AlignTypeEnum align_type, uint32_t bit_width,
- bool ABIAlign) const;
+ bool ABIAlign, const Type *Ty) const;
//! Internal helper method that returns requested alignment for type.
unsigned char getAlignment(const Type *Ty, bool abi_or_pref) const;
///
/// @note This has to exist, because this is a pass, but it should never be
/// used.
- TargetData() : ImmutablePass((intptr_t)&ID) {
+ TargetData() : ImmutablePass(intptr_t(&ID)) {
assert(0 && "ERROR: Bad TargetData ctor used. "
"Tool did not specify a TargetData to use?");
abort();
}
/// Constructs a TargetData from a specification string. See init().
- TargetData(const std::string &TargetDescription)
- : ImmutablePass((intptr_t)&ID) {
+ explicit TargetData(const std::string &TargetDescription)
+ : ImmutablePass(intptr_t(&ID)) {
init(TargetDescription);
}
/// Initialize target data from properties stored in the module.
- TargetData(const Module *M);
+ explicit TargetData(const Module *M);
TargetData(const TargetData &TD) :
- ImmutablePass((intptr_t)&ID),
+ ImmutablePass(intptr_t(&ID)),
LittleEndian(TD.isLittleEndian()),
PointerMemSize(TD.PointerMemSize),
PointerABIAlign(TD.PointerABIAlign),
/// Target pointer size, in bits
unsigned char getPointerSizeInBits() const { return 8*PointerMemSize; }
- /// getTypeSize - Return the number of bytes necessary to hold the specified
- /// type.
- uint64_t getTypeSize(const Type *Ty) const;
-
/// getTypeSizeInBits - Return the number of bits necessary to hold the
- /// specified type.
+ /// specified type. For example, returns 36 for i36 and 80 for x86_fp80.
uint64_t getTypeSizeInBits(const Type* Ty) const;
+ /// getTypeStoreSize - Return the maximum number of bytes that may be
+ /// overwritten by storing the specified type. For example, returns 5
+ /// for i36 and 10 for x86_fp80.
+ uint64_t getTypeStoreSize(const Type *Ty) const {
+ return (getTypeSizeInBits(Ty)+7)/8;
+ }
+
+ /// getTypeStoreSizeInBits - Return the maximum number of bits that may be
+ /// overwritten by storing the specified type; always a multiple of 8. For
+ /// example, returns 40 for i36 and 80 for x86_fp80.
+ uint64_t getTypeStoreSizeInBits(const Type *Ty) const {
+ return 8*getTypeStoreSize(Ty);
+ }
+
+ /// getABITypeSize - Return the offset in bytes between successive objects
+ /// of the specified type, including alignment padding. This is the amount
+ /// that alloca reserves for this type. For example, returns 12 or 16 for
+ /// x86_fp80, depending on alignment.
+ uint64_t getABITypeSize(const Type* Ty) const {
+ unsigned char Align = getABITypeAlignment(Ty);
+ return (getTypeStoreSize(Ty) + Align - 1)/Align*Align;
+ }
+
+ /// getABITypeSizeInBits - Return the offset in bits between successive
+ /// objects of the specified type, including alignment padding; always a
+ /// multiple of 8. This is the amount that alloca reserves for this type.
+ /// For example, returns 96 or 128 for x86_fp80, depending on alignment.
+ uint64_t getABITypeSizeInBits(const Type* Ty) const {
+ return 8*getABITypeSize(Ty);
+ }
+
/// getABITypeAlignment - Return the minimum ABI-required alignment for the
/// specified type.
unsigned char getABITypeAlignment(const Type *Ty) const;
+ /// getCallFrameTypeAlignment - Return the minimum ABI-required alignment
+ /// for the specified type when it is part of a call frame.
+ unsigned char getCallFrameTypeAlignment(const Type *Ty) const;
+
+
/// getPrefTypeAlignment - Return the preferred stack/global alignment for
- /// the specified type.
+ /// the specified type. This is always at least as good as the ABI alignment.
unsigned char getPrefTypeAlignment(const Type *Ty) const;
/// getPreferredTypeAlignmentShift - Return the preferred alignment for the
/// avoid a dangling pointer in this cache.
void InvalidateStructLayoutInfo(const StructType *Ty) const;
+ /// getPreferredAlignment - Return the preferred alignment of the specified
+ /// global. This includes an explicitly requested alignment (if the global
+ /// has one).
+ unsigned getPreferredAlignment(const GlobalVariable *GV) const;
+
/// getPreferredAlignmentLog - Return the preferred alignment of the
/// specified global, returned in log form. This includes an explicitly
/// requested alignment (if the global has one).
return StructSize;
}
+ uint64_t getSizeInBits() const {
+ return 8*StructSize;
+ }
+
unsigned getAlignment() const {
return StructAlignment;
}
assert(Idx < NumElements && "Invalid element idx!");
return MemberOffsets[Idx];
}
-
+
+ uint64_t getElementOffsetInBits(unsigned Idx) const {
+ return getElementOffset(Idx)*8;
+ }
+
private:
friend class TargetData; // Only TargetData can create this class
StructLayout(const StructType *ST, const TargetData &TD);
projects / oota-llvm.git / blobdiff