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Add const to a bunch of Type* in DataLayout. NFC. 

Almost all methods in DataLayout took mutable pointers but didn't need to.
These were only accessing constant methods of the types, or using the Type*
to key a map.  Neither of these needs a mutable pointer.

llvm-svn: 243135
This commit is contained in:
Pete Cooper 2015-07-24 18:29:09 +00:00
parent 6ac940db19
commit 6aaad8d88d
2 changed files with 31 additions and 31 deletions
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36
llvm/include/llvm/IR/DataLayout.h
View File

@ -150,12 +150,12 @@ private:
void setAlignment(AlignTypeEnum align_type, unsigned abi_align,
unsigned pref_align, uint32_t bit_width);
unsigned getAlignmentInfo(AlignTypeEnum align_type, uint32_t bit_width,
bool ABIAlign, Type *Ty) const;
bool ABIAlign, const Type *Ty) const;
void setPointerAlignment(uint32_t AddrSpace, unsigned ABIAlign,
unsigned PrefAlign, uint32_t TypeByteWidth);
/// Internal helper method that returns requested alignment for type.
unsigned getAlignment(Type *Ty, bool abi_or_pref) const;
unsigned getAlignment(const Type *Ty, bool abi_or_pref) const;
/// \brief Valid alignment predicate.
///
@ -335,9 +335,9 @@ public:
/// If this function is called with a vector of pointers, then the type size
/// of the pointer is returned. This should only be called with a pointer or
/// vector of pointers.
unsigned getPointerTypeSizeInBits(Type *) const;
unsigned getPointerTypeSizeInBits(const Type *) const;
unsigned getPointerTypeSize(Type *Ty) const {
unsigned getPointerTypeSize(const Type *Ty) const {
return getPointerTypeSizeInBits(Ty) / 8;
}
@ -362,13 +362,13 @@ public:
///
/// For example, returns 36 for i36 and 80 for x86_fp80. The type passed must
/// have a size (Type::isSized() must return true).
uint64_t getTypeSizeInBits(Type *Ty) const;
uint64_t getTypeSizeInBits(const Type *Ty) const;
/// \brief Returns 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(Type *Ty) const {
uint64_t getTypeStoreSize(const Type *Ty) const {
return (getTypeSizeInBits(Ty) + 7) / 8;
}
@ -376,7 +376,7 @@ public:
/// storing the specified type; always a multiple of 8.
///
/// For example, returns 40 for i36 and 80 for x86_fp80.
uint64_t getTypeStoreSizeInBits(Type *Ty) const {
uint64_t getTypeStoreSizeInBits(const Type *Ty) const {
return 8 * getTypeStoreSize(Ty);
}
@ -385,7 +385,7 @@ public:
///
/// This is the amount that alloca reserves for this type. For example,
/// returns 12 or 16 for x86_fp80, depending on alignment.
uint64_t getTypeAllocSize(Type *Ty) const {
uint64_t getTypeAllocSize(const Type *Ty) const {
// Round up to the next alignment boundary.
return RoundUpToAlignment(getTypeStoreSize(Ty), getABITypeAlignment(Ty));
}
@ -395,12 +395,12 @@ public:
///
/// This is the amount that alloca reserves for this type. For example,
/// returns 96 or 128 for x86_fp80, depending on alignment.
uint64_t getTypeAllocSizeInBits(Type *Ty) const {
uint64_t getTypeAllocSizeInBits(const Type *Ty) const {
return 8 * getTypeAllocSize(Ty);
}
/// \brief Returns the minimum ABI-required alignment for the specified type.
unsigned getABITypeAlignment(Type *Ty) const;
unsigned getABITypeAlignment(const Type *Ty) const;
/// \brief Returns the minimum ABI-required alignment for an integer type of
/// the specified bitwidth.
@ -410,11 +410,11 @@ public:
/// type.
///
/// This is always at least as good as the ABI alignment.
unsigned getPrefTypeAlignment(Type *Ty) const;
unsigned getPrefTypeAlignment(const Type *Ty) const;
/// \brief Returns the preferred alignment for the specified type, returned as
/// log2 of the value (a shift amount).
unsigned getPreferredTypeAlignmentShift(Type *Ty) const;
unsigned getPreferredTypeAlignmentShift(const Type *Ty) const;
/// \brief Returns an integer type with size at least as big as that of a
/// pointer in the given address space.
@ -422,7 +422,7 @@ public:
/// \brief Returns an integer (vector of integer) type with size at least as
/// big as that of a pointer of the given pointer (vector of pointer) type.
Type *getIntPtrType(Type *) const;
Type *getIntPtrType(const Type *) const;
/// \brief Returns the smallest integer type with size at least as big as
/// Width bits.
@ -448,7 +448,7 @@ public:
/// struct, its size, and the offsets of its fields.
///
/// Note that this information is lazily cached.
const StructLayout *getStructLayout(StructType *Ty) const;
const StructLayout *getStructLayout(const StructType *Ty) const;
/// \brief Returns the preferred alignment of the specified global.
///
@ -499,12 +499,12 @@ public:
private:
friend class DataLayout; // Only DataLayout can create this class
StructLayout(StructType *ST, const DataLayout &DL);
StructLayout(const StructType *ST, const DataLayout &DL);
};
// The implementation of this method is provided inline as it is particularly
// well suited to constant folding when called on a specific Type subclass.
inline uint64_t DataLayout::getTypeSizeInBits(Type *Ty) const {
inline uint64_t DataLayout::getTypeSizeInBits(const Type *Ty) const {
assert(Ty->isSized() && "Cannot getTypeInfo() on a type that is unsized!");
switch (Ty->getTypeID()) {
case Type::LabelTyID:
@ -512,7 +512,7 @@ inline uint64_t DataLayout::getTypeSizeInBits(Type *Ty) const {
case Type::PointerTyID:
return getPointerSizeInBits(Ty->getPointerAddressSpace());
case Type::ArrayTyID: {
ArrayType *ATy = cast<ArrayType>(Ty);
const ArrayType *ATy = cast<ArrayType>(Ty);
return ATy->getNumElements() *
getTypeAllocSizeInBits(ATy->getElementType());
}
@ -536,7 +536,7 @@ inline uint64_t DataLayout::getTypeSizeInBits(Type *Ty) const {
case Type::X86_FP80TyID:
return 80;
case Type::VectorTyID: {
VectorType *VTy = cast<VectorType>(Ty);
const VectorType *VTy = cast<VectorType>(Ty);
return VTy->getNumElements() * getTypeSizeInBits(VTy->getElementType());
}
default:

26
llvm/lib/IR/DataLayout.cpp
View File

@ -37,7 +37,7 @@ using namespace llvm;
// Support for StructLayout
//===----------------------------------------------------------------------===//
StructLayout::StructLayout(StructType *ST, const DataLayout &DL) {
StructLayout::StructLayout(const StructType *ST, const DataLayout &DL) {
assert(!ST->isOpaque() && "Cannot get layout of opaque structs");
StructAlignment = 0;
StructSize = 0;
@ -451,7 +451,7 @@ void DataLayout::setPointerAlignment(uint32_t AddrSpace, unsigned ABIAlign,
/// preferred if ABIInfo = false) the layout wants for the specified datatype.
unsigned DataLayout::getAlignmentInfo(AlignTypeEnum AlignType,
uint32_t BitWidth, bool ABIInfo,
Type *Ty) const {
const Type *Ty) const {
// Check to see if we have an exact match and remember the best match we see.
int BestMatchIdx = -1;
int LargestInt = -1;
@ -516,7 +516,7 @@ unsigned DataLayout::getAlignmentInfo(AlignTypeEnum AlignType,
namespace {
class StructLayoutMap {
typedef DenseMap<StructType*, StructLayout*> LayoutInfoTy;
typedef DenseMap<const StructType*, StructLayout*> LayoutInfoTy;
LayoutInfoTy LayoutInfo;
public:
@ -529,7 +529,7 @@ public:
}
}
StructLayout *&operator[](StructType *STy) {
StructLayout *&operator[](const StructType *STy) {
return LayoutInfo[STy];
}
};
@ -548,7 +548,7 @@ DataLayout::~DataLayout() {
clear();
}
const StructLayout *DataLayout::getStructLayout(StructType *Ty) const {
const StructLayout *DataLayout::getStructLayout(const StructType *Ty) const {
if (!LayoutMap)
LayoutMap = new StructLayoutMap();
@ -599,7 +599,7 @@ unsigned DataLayout::getPointerSize(unsigned AS) const {
return I->TypeByteWidth;
}
unsigned DataLayout::getPointerTypeSizeInBits(Type *Ty) const {
unsigned DataLayout::getPointerTypeSizeInBits(const Type *Ty) const {
assert(Ty->isPtrOrPtrVectorTy() &&
"This should only be called with a pointer or pointer vector type");
@ -617,7 +617,7 @@ unsigned DataLayout::getPointerTypeSizeInBits(Type *Ty) const {
Get the ABI (\a abi_or_pref == true) or preferred alignment (\a abi_or_pref
== false) for the requested type \a Ty.
*/
unsigned DataLayout::getAlignment(Type *Ty, bool abi_or_pref) const {
unsigned DataLayout::getAlignment(const Type *Ty, bool abi_or_pref) const {
int AlignType = -1;
assert(Ty->isSized() && "Cannot getTypeInfo() on a type that is unsized!");
@ -671,7 +671,7 @@ unsigned DataLayout::getAlignment(Type *Ty, bool abi_or_pref) const {
abi_or_pref, Ty);
}
unsigned DataLayout::getABITypeAlignment(Type *Ty) const {
unsigned DataLayout::getABITypeAlignment(const Type *Ty) const {
return getAlignment(Ty, true);
}
@ -681,11 +681,11 @@ unsigned DataLayout::getABIIntegerTypeAlignment(unsigned BitWidth) const {
return getAlignmentInfo(INTEGER_ALIGN, BitWidth, true, nullptr);
}
unsigned DataLayout::getPrefTypeAlignment(Type *Ty) const {
unsigned DataLayout::getPrefTypeAlignment(const Type *Ty) const {
return getAlignment(Ty, false);
}
unsigned DataLayout::getPreferredTypeAlignmentShift(Type *Ty) const {
unsigned DataLayout::getPreferredTypeAlignmentShift(const Type *Ty) const {
unsigned Align = getPrefTypeAlignment(Ty);
assert(!(Align & (Align-1)) && "Alignment is not a power of two!");
return Log2_32(Align);
@ -696,12 +696,12 @@ IntegerType *DataLayout::getIntPtrType(LLVMContext &C,
return IntegerType::get(C, getPointerSizeInBits(AddressSpace));
}
Type *DataLayout::getIntPtrType(Type *Ty) const {
Type *DataLayout::getIntPtrType(const Type *Ty) const {
assert(Ty->isPtrOrPtrVectorTy() &&
"Expected a pointer or pointer vector type.");
unsigned NumBits = getPointerTypeSizeInBits(Ty);
IntegerType *IntTy = IntegerType::get(Ty->getContext(), NumBits);
if (VectorType *VecTy = dyn_cast<VectorType>(Ty))
if (const VectorType *VecTy = dyn_cast<VectorType>(Ty))
return VectorType::get(IntTy, VecTy->getNumElements());
return IntTy;
}
@ -720,7 +720,7 @@ unsigned DataLayout::getLargestLegalIntTypeSize() const {
uint64_t DataLayout::getIndexedOffset(Type *ptrTy,
ArrayRef<Value *> Indices) const {
Type *Ty = ptrTy;
const Type *Ty = ptrTy;
assert(Ty->isPointerTy() && "Illegal argument for getIndexedOffset()");
uint64_t Result = 0;