endianness.h: use builtins directly

[wimlib] / include / wimlib / compiler.h

diff --git a/include/wimlib/compiler.h b/include/wimlib/compiler.h
index 7f48e4fe8ea7ca213963f09b4a5d10e2374f0209..dc0c1c98c6220f5c816ee5b6ac81cd9144cf506e 100644 (file)
--- a/include/wimlib/compiler.h
+++ b/include/wimlib/compiler.h
@@ -153,21 +153,6 @@
 #endif
 #define SWAP(a, b)     swap((a), (b))
 
-/* (Optional) Efficiently swap the bytes of a 16-bit integer.  */
-#if GCC_PREREQ(4, 8) || __has_builtin(__builtin_bswap16)
-#  define compiler_bswap16 __builtin_bswap16
-#endif
-
-/* (Optional) Efficiently swap the bytes of a 32-bit integer.  */
-#if GCC_PREREQ(4, 3) || __has_builtin(__builtin_bswap32)
-#  define compiler_bswap32 __builtin_bswap32
-#endif
-
-/* (Optional) Efficiently swap the bytes of a 64-bit integer.  */
-#if GCC_PREREQ(4, 3) || __has_builtin(__builtin_bswap64)
-#  define compiler_bswap64 __builtin_bswap64
-#endif
-
 /* Optional definitions for checking with 'sparse'.  */
 #ifdef __CHECKER__
 #  define _bitwise_attr        __attribute__((bitwise))