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| author | Jorrit Jongma <git@jongma.org> | 2020-05-19 14:52:40 +0200 |
|---|---|---|
| committer | Wayne Davison <wayne@opencoder.net> | 2020-05-21 14:41:55 -0700 |
| commit | 70c6b408dc299f7aa00dd3452ae82b56d6c17f80 (patch) | |
| tree | b97468fc0e0b8e48499f1b2b221fe89c045679b7 /checksum.c | |
| parent | be7af36c517757d7ff9562275ebfc04355613dff (diff) | |
| download | rsync-70c6b408dc299f7aa00dd3452ae82b56d6c17f80.tar.gz | |
SSE2/SSSE3 optimized version of get_checksum1() for x86-64
Requires compilation using GCC C++ front end, build scripts have been
modified accordingly. C++ is only used when the optimization is enabled
(g++ as compiler, x86-64 build target, --enable-sse2 is passed to
configure).
(Wayne made a few tweaks, including making it disabled by default.)
Diffstat (limited to 'checksum.c')
| -rw-r--r-- | checksum.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -99,6 +99,7 @@ int canonical_checksum(int csum_type) return csum_type >= CSUM_MD4 ? 1 : 0; } +#ifndef ENABLE_SSE2 /* See checksum_sse2.cpp for the SSE2 version. */ /* a simple 32 bit checksum that can be updated from either end (inspired by Mark Adler's Adler-32 checksum) @@ -119,6 +120,7 @@ uint32 get_checksum1(char *buf1, int32 len) } return (s1 & 0xffff) + (s2 << 16); } +#endif void get_checksum2(char *buf, int32 len, char *sum) { |