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| author | Ulrich Drepper <drepper@redhat.com> | 2007-10-12 04:40:48 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-10-12 04:40:48 +0000 |
| commit | 26a51060b10e284231ff73197957cbff52970159 (patch) | |
| tree | 635f995f4624da2a38eff4255e11c981b4b1ff28 /iconv/gconv_simple.c | |
| parent | 6dd3748b5dbe97cbcdbc56728452ae91bf3bdf44 (diff) | |
| download | glibc-26a51060b10e284231ff73197957cbff52970159.tar.gz glibc-26a51060b10e284231ff73197957cbff52970159.tar.xz glibc-26a51060b10e284231ff73197957cbff52970159.zip | |
* iconv/gconv_simple.c: Add some branch prediction.
Diffstat (limited to 'iconv/gconv_simple.c')
| -rw-r--r-- | iconv/gconv_simple.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/iconv/gconv_simple.c b/iconv/gconv_simple.c index 343c27521f..ec8f38a962 100644 --- a/iconv/gconv_simple.c +++ b/iconv/gconv_simple.c @@ -1,5 +1,5 @@ /* Simple transformations functions. - Copyright (C) 1997-2003, 2004, 2005 Free Software Foundation, Inc. + Copyright (C) 1997-2003, 2004, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -880,7 +880,7 @@ ucs4le_internal_loop_single (struct __gconv_step *step, { \ uint32_t wc = *((const uint32_t *) inptr); \ \ - if (wc < 0x80) \ + if (__builtin_expect (wc < 0x80, 1)) \ /* It's an one byte sequence. */ \ *outptr++ = (unsigned char) wc; \ else if (__builtin_expect (wc <= 0x7fffffff, 1)) \ @@ -940,21 +940,19 @@ ucs4le_internal_loop_single (struct __gconv_step *step, #define LOOPFCT FROM_LOOP #define BODY \ { \ - uint32_t ch; \ - uint_fast32_t cnt; \ - uint_fast32_t i; \ - \ /* Next input byte. */ \ - ch = *inptr; \ + uint32_t ch = *inptr; \ \ - if (ch < 0x80) \ + if (__builtin_expect (ch < 0x80, 1)) \ { \ /* One byte sequence. */ \ - cnt = 1; \ ++inptr; \ } \ else \ { \ + uint_fast32_t cnt; \ + uint_fast32_t i; \ + \ if (ch >= 0xc2 && ch < 0xe0) \ { \ /* We expect two bytes. The first byte cannot be 0xc0 or 0xc1, \ |