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| author | Måns Rullgård <mans@mansr.com> | 2008-07-15 19:06:32 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2008-07-15 19:06:32 +0000 |
| commit | b0367ef00afe74f4fae1ff930ea53e88c46c3d52 (patch) | |
| tree | 3f3d0f2028e3252d47953f5d8cee5a13f7f0331e /libavcodec/armv4l/mathops.h | |
| parent | 6865e04620fa14eada30866cd8efbcbd9157537b (diff) | |
| download | ffmpeg-b0367ef00afe74f4fae1ff930ea53e88c46c3d52.tar.gz | |
ARM: optimised MAC64 and MLS64
Originally committed as revision 14245 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/armv4l/mathops.h')
| -rw-r--r-- | libavcodec/armv4l/mathops.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/armv4l/mathops.h b/libavcodec/armv4l/mathops.h index e42cefb430..ff12aef8c9 100644 --- a/libavcodec/armv4l/mathops.h +++ b/libavcodec/armv4l/mathops.h @@ -57,6 +57,16 @@ static inline av_const int64_t MUL64(int a, int b) } #define MUL64 MUL64 +static inline av_const int64_t MAC64(int64_t d, int a, int b) +{ + union { uint64_t x; unsigned hl[2]; } x = { d }; + asm ("smlal %0, %1, %2, %3" + : "+r"(x.hl[0]), "+r"(x.hl[1]) : "r"(a), "r"(b)); + return x.x; +} +#define MAC64(d, a, b) ((d) = MAC64(d, a, b)) +#define MLS64(d, a, b) MAC64(d, -(a), b) + #if defined(HAVE_ARMV5TE) /* signed 16x16 -> 32 multiply add accumulate */ |