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Add an IntegerType::getMask() method to get an APInt mask for the type.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34771 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-03-01 02:25:03 +00:00
parent a3756ee7fe
commit 0bfd44918a
1 changed files with 8 additions and 0 deletions
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8
include/llvm/DerivedTypes.h
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@ -19,6 +19,7 @@
#define LLVM_DERIVED_TYPES_H #define LLVM_DERIVED_TYPES_H
#include "llvm/Type.h" #include "llvm/Type.h"
#include "llvm/ADT/APInt.h"
namespace llvm { namespace llvm {
@ -108,6 +109,13 @@ public:
return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits()); return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits());
} }
/// For example, this is 0xFF for an 8 bit integer, 0xFFFF for i16, etc.
/// @returns a bit mask with ones set for all the bits of this type.
/// @brief Get a bit mask for this type.
APInt getMask() const {
return APInt::getAllOnesValue(getBitWidth());
}
/// This method determines if the width of this IntegerType is a power-of-2 /// This method determines if the width of this IntegerType is a power-of-2
/// in terms of 8 bit bytes. /// in terms of 8 bit bytes.
/// @returns true if this is a power-of-2 byte width. /// @returns true if this is a power-of-2 byte width.