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Use the LLVM_GNUC_PREREQ macro instead of the longhand version check

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221219 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner 2014-11-04 01:28:33 +00:00
parent 1bf7f442aa
commit 9dfa407dc9
1 changed files with 3 additions and 4 deletions
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7
include/llvm/Support/SwapByteOrder.h
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@ -15,6 +15,7 @@
#ifndef LLVM_SUPPORT_SWAPBYTEORDER_H #ifndef LLVM_SUPPORT_SWAPBYTEORDER_H
#define LLVM_SUPPORT_SWAPBYTEORDER_H #define LLVM_SUPPORT_SWAPBYTEORDER_H
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h" #include "llvm/Support/DataTypes.h"
#include <cstddef> #include <cstddef>
#include <limits> #include <limits>
@ -39,8 +40,7 @@ inline uint16_t SwapByteOrder_16(uint16_t value) {
/// SwapByteOrder_32 - This function returns a byte-swapped representation of /// SwapByteOrder_32 - This function returns a byte-swapped representation of
/// the 32-bit argument. /// the 32-bit argument.
inline uint32_t SwapByteOrder_32(uint32_t value) { inline uint32_t SwapByteOrder_32(uint32_t value) {
#if defined(__llvm__) || \ #if defined(__llvm__) || (LLVM_GNUC_PREREQ(4, 3, 0) && !defined(__ICC))
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC)
return __builtin_bswap32(value); return __builtin_bswap32(value);
#elif defined(_MSC_VER) && !defined(_DEBUG) #elif defined(_MSC_VER) && !defined(_DEBUG)
return _byteswap_ulong(value); return _byteswap_ulong(value);
@ -56,8 +56,7 @@ inline uint32_t SwapByteOrder_32(uint32_t value) {
/// SwapByteOrder_64 - This function returns a byte-swapped representation of /// SwapByteOrder_64 - This function returns a byte-swapped representation of
/// the 64-bit argument. /// the 64-bit argument.
inline uint64_t SwapByteOrder_64(uint64_t value) { inline uint64_t SwapByteOrder_64(uint64_t value) {
#if defined(__llvm__) || \ #if defined(__llvm__) || (LLVM_GNUC_PREREQ(4, 3, 0) && !defined(__ICC))
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC)
return __builtin_bswap64(value); return __builtin_bswap64(value);
#elif defined(_MSC_VER) && !defined(_DEBUG) #elif defined(_MSC_VER) && !defined(_DEBUG)
return _byteswap_uint64(value); return _byteswap_uint64(value);