#define LLVM_SUPPORT_MATHEXTRAS_H
#include "llvm/System/DataTypes.h"
+#include "llvm/System/SwapByteOrder.h"
namespace llvm {
/// ByteSwap_16 - This function returns a byte-swapped representation of the
/// 16-bit argument, Value.
inline uint16_t ByteSwap_16(uint16_t Value) {
-#if defined(_MSC_VER) && !defined(_DEBUG)
- // The DLL version of the runtime lacks these functions (bug!?), but in a
- // release build they're replaced with BSWAP instructions anyway.
- return _byteswap_ushort(Value);
-#else
- uint16_t Hi = Value << 8;
- uint16_t Lo = Value >> 8;
- return Hi | Lo;
-#endif
+ return sys::SwapByteOrder(Value);
}
/// ByteSwap_32 - This function returns a byte-swapped representation of the
/// 32-bit argument, Value.
inline uint32_t ByteSwap_32(uint32_t Value) {
-#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC)
- return __builtin_bswap32(Value);
-#elif defined(_MSC_VER) && !defined(_DEBUG)
- return _byteswap_ulong(Value);
-#else
- uint32_t Byte0 = Value & 0x000000FF;
- uint32_t Byte1 = Value & 0x0000FF00;
- uint32_t Byte2 = Value & 0x00FF0000;
- uint32_t Byte3 = Value & 0xFF000000;
- return (Byte0 << 24) | (Byte1 << 8) | (Byte2 >> 8) | (Byte3 >> 24);
-#endif
+ return sys::SwapByteOrder(Value);
}
/// ByteSwap_64 - This function returns a byte-swapped representation of the
/// 64-bit argument, Value.
inline uint64_t ByteSwap_64(uint64_t Value) {
-#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC)
- return __builtin_bswap64(Value);
-#elif defined(_MSC_VER) && !defined(_DEBUG)
- return _byteswap_uint64(Value);
-#else
- uint64_t Hi = ByteSwap_32(uint32_t(Value));
- uint32_t Lo = ByteSwap_32(uint32_t(Value >> 32));
- return (Hi << 32) | Lo;
-#endif
+ return sys::SwapByteOrder(Value);
}
/// CountLeadingZeros_32 - this function performs the platform optimal form of
/// SignExtend32 - Sign extend B-bit number x to 32-bit int.
/// Usage int32_t r = SignExtend32<5>(x);
-template <unsigned B> inline int32_t SignExtend32(int32_t x) {
- return (x << (32 - B)) >> (32 - B);
+template <unsigned B> inline int32_t SignExtend32(uint32_t x) {
+ return int32_t(x << (32 - B)) >> (32 - B);
}
/// SignExtend64 - Sign extend B-bit number x to 64-bit int.
/// Usage int64_t r = SignExtend64<5>(x);
-template <unsigned B> inline int64_t SignExtend64(int32_t x) {
- return (x << (64 - B)) >> (64 - B);
+template <unsigned B> inline int64_t SignExtend64(uint64_t x) {
+ return int64_t(x << (64 - B)) >> (64 - B);
}
} // End llvm namespace