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| author | Mans Rullgard <mans@mansr.com> | 2012-10-08 23:01:02 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2012-10-08 23:14:51 +0100 |
| commit | f79364b2c30aaaec9f0b1500a74da5a859c2ff37 (patch) | |
| tree | d62b0d4830e7f90ae54efacd6af9b9a9bfa9c57c /libavcodec/ppc | |
| parent | 643933f51d1cf0efedece07b058d46c87deb0b2d (diff) | |
| download | ffmpeg-f79364b2c30aaaec9f0b1500a74da5a859c2ff37.tar.gz | |
ppc: fix Altivec build with old compilers
The vec_splat() intrinsic requires a constant argument for the
element number, and the code relies on the compiler unrolling
the loop to provide this. Manually unrolling the loop avoids
this reliance and works with all compilers.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec/ppc')
| -rw-r--r-- | libavcodec/ppc/fmtconvert_altivec.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/libavcodec/ppc/fmtconvert_altivec.c b/libavcodec/ppc/fmtconvert_altivec.c index 129891ad9b..68e5e0079e 100644 --- a/libavcodec/ppc/fmtconvert_altivec.c +++ b/libavcodec/ppc/fmtconvert_altivec.c @@ -83,6 +83,12 @@ static void float_to_int16_altivec(int16_t *dst, const float *src, long len) } } +#define VSTE_INC(dst, v, elem, inc) do { \ + vector signed short s = vec_splat(v, elem); \ + vec_ste(s, 0, dst); \ + dst += inc; \ + } while (0) + static void float_to_int16_stride_altivec(int16_t *dst, const float *src, long len, int stride) { @@ -91,11 +97,14 @@ static void float_to_int16_stride_altivec(int16_t *dst, const float *src, for (i = 0; i < len - 7; i += 8) { d = float_to_int16_one_altivec(src + i); - for (j = 0; j < 8; j++) { - s = vec_splat(d, j); - vec_ste(s, 0, dst); - dst += stride; - } + VSTE_INC(dst, d, 0, stride); + VSTE_INC(dst, d, 1, stride); + VSTE_INC(dst, d, 2, stride); + VSTE_INC(dst, d, 3, stride); + VSTE_INC(dst, d, 4, stride); + VSTE_INC(dst, d, 5, stride); + VSTE_INC(dst, d, 6, stride); + VSTE_INC(dst, d, 7, stride); } } |