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| author | Paul Eggert <eggert@cs.ucla.edu> | 2013-10-04 00:36:22 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2013-10-04 00:36:22 -0700 |
| commit | 4eed3157327f8406921658442a11af7e9d84d603 (patch) | |
| tree | e727a3017628ce840707d71998d4f6423a8fbde3 /src/fringe.c | |
| parent | 157fec2e190a84345138a0cc69e35f177c4d4a56 (diff) | |
| download | emacs-4eed3157327f8406921658442a11af7e9d84d603.tar.gz | |
Use hardware support for byteswapping on glibc x86 etc.
On Fedora 19 x86-64, the new bswap_64 needs 1 instruction,
whereas the old swap64 needed 30.
* admin/merge-gnulib (GNULIB_MODULES): Add byteswap.
* lib/byteswap.in.h, m4/byteswap.m4: New files, copied from Gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* src/fringe.c (init_fringe_bitmap) [WORDS_BIGENDIAN]:
* src/sound.c (le2hl, le2hs, be2hl) [!WINDOWSNT]:
Use byteswap.h's macros to swap bytes.
* src/lisp.h (swap16, swap32, swap64): Remove.
All uses replaced by bswap_16, bswap_32, bswap_64.
Diffstat (limited to 'src/fringe.c')
| -rw-r--r-- | src/fringe.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/fringe.c b/src/fringe.c index 85103f7f08d..3537027f1dd 100644 --- a/src/fringe.c +++ b/src/fringe.c @@ -20,6 +20,8 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <stdio.h> +#include <byteswap.h> + #include "lisp.h" #include "frame.h" #include "window.h" @@ -1519,7 +1521,7 @@ init_fringe_bitmap (int which, struct fringe_bitmap *fb, int once_p) | (swap_nibble[(b>>12) & 0xf])); b >>= (16 - fb->width); #ifdef WORDS_BIGENDIAN - b = ((b >> 8) | (b << 8)); + b = bswap_16 (b); #endif *bits++ = b; } |