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| author | Adrian Johnson <ajohnson@redneon.com> | 2014-10-31 22:43:32 +1030 |
|---|---|---|
| committer | Adrian Johnson <ajohnson@redneon.com> | 2014-10-31 22:55:14 +1030 |
| commit | adbeb3d53c6c6e8ddcc63988200da4c5c9627717 (patch) | |
| tree | bead332c389dc714a3cb608805df78c964c6e4b3 | |
| parent | e4b78424ac82588bcb9b855d5b6d5872050d33f9 (diff) | |
| download | cairo-adbeb3d53c6c6e8ddcc63988200da4c5c9627717.tar.gz | |
Improve performance of cpu_to_be32 and be32_to_cpu
By switching to the more common form, gcc and clang emit a single
bswap instruction and truetype subsetting of large fonts runs about
15% faster.
| -rw-r--r-- | src/cairoint.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cairoint.h b/src/cairoint.h index 07ced422d..5bca00389 100644 --- a/src/cairoint.h +++ b/src/cairoint.h @@ -229,7 +229,7 @@ be16_to_cpu(uint16_t v) static inline uint32_t cairo_const cpu_to_be32(uint32_t v) { - return (cpu_to_be16 (v) << 16) | cpu_to_be16 (v >> 16); + return (v >> 24) | ((v >> 8) & 0xff00) | ((v << 8) & 0xff0000) | (v << 24); } static inline uint32_t cairo_const |