wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

Bug 798172 - Apple's default clang 4.2 does not have __builtin_bswap16(). r=Waldo

Browse Source
This commit is contained in:
Chris Peterson 2013-04-03 23:40:39 -07:00
parent a1093b2662
commit cb83cc8852
1 changed files with 14 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
mfbt/Endian.h
View File

@ -142,6 +142,18 @@
# error "Cannot determine endianness"
#endif
#if defined(__clang__)
# if __has_builtin(__builtin_bswap16)
# define MOZ_HAVE_BUILTIN_BYTESWAP16 __builtin_bswap16
# endif
#elif defined(__GNUC__)
# if MOZ_GCC_VERSION_AT_LEAST(4, 8, 0)
# define MOZ_HAVE_BUILTIN_BYTESWAP16 __builtin_bswap16
# endif
#elif defined(_MSC_VER)
# define MOZ_HAVE_BUILTIN_BYTESWAP16 _byteswap_ushort
#endif
namespace mozilla {
namespace detail {
@ -159,12 +171,8 @@ struct Swapper<T, 2>
{
static T swap(T value)
{
#if defined(__clang__)
return T(__builtin_bswap16(value));
#elif defined(__GNUC__) && MOZ_GCC_VERSION_AT_LEAST(4, 8, 0)
return T(__builtin_bswap16(value));
#elif defined(_MSC_VER)
return T(_byteswap_ushort(value));
#if defined(MOZ_HAVE_BUILTIN_BYTESWAP16)
return MOZ_HAVE_BUILTIN_BYTESWAP16(value);
#else
return T(((value & 0x00ff) << 8) | ((value & 0xff00) >> 8));
#endif