[cairo-commit] src/cairoint.h
Adrian Johnson
ajohnson at kemper.freedesktop.org
Fri Oct 31 05:33:05 PDT 2014
src/cairoint.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
New commits:
commit adbeb3d53c6c6e8ddcc63988200da4c5c9627717
Author: Adrian Johnson <ajohnson at redneon.com>
Date: Fri Oct 31 22:43:32 2014 +1030
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.
diff --git a/src/cairoint.h b/src/cairoint.h
index 07ced42..5bca003 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
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