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floatmix: unroll loop a little

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This commit is contained in:
Wim Taymans 2019-02-07 12:30:36 +01:00
parent 416bb2466d
commit db230fc136
1 changed files with 23 additions and 6 deletions
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29
src/modules/module-audio-dsp/floatmix.c
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@ -725,15 +725,32 @@ static void mix_2(float *dst, float *src1, float *src2, int n_samples)
if (SPA_IS_ALIGNED(src1, 16) &&
SPA_IS_ALIGNED(src2, 16) &&
SPA_IS_ALIGNED(dst, 16))
unrolled = n_samples / 4;
unrolled = n_samples / 16;
else
unrolled = 0;
for (n = 0; unrolled--; n += 4) {
in[0] = _mm_load_ps(&src1[n]),
in[1] = _mm_load_ps(&src2[n]),
in[0] = _mm_add_ps(in[0], in[1]);
_mm_store_ps(&dst[n], in[0]);
for (n = 0; unrolled--; n += 16) {
__m128 in1[4], in2[4];
in1[0] = _mm_load_ps(&src1[n+ 0]);
in1[1] = _mm_load_ps(&src1[n+ 4]);
in1[2] = _mm_load_ps(&src1[n+ 8]);
in1[3] = _mm_load_ps(&src1[n+12]);
in2[0] = _mm_load_ps(&src2[n+ 0]);
in2[1] = _mm_load_ps(&src2[n+ 4]);
in2[2] = _mm_load_ps(&src2[n+ 8]);
in2[3] = _mm_load_ps(&src2[n+12]);
in1[0] = _mm_add_ps(in1[0], in2[0]);
in1[1] = _mm_add_ps(in1[1], in2[1]);
in1[2] = _mm_add_ps(in1[2], in2[2]);
in1[3] = _mm_add_ps(in1[3], in2[3]);
_mm_store_ps(&dst[n+ 0], in1[0]);
_mm_store_ps(&dst[n+ 4], in1[1]);
_mm_store_ps(&dst[n+ 8], in1[2]);
_mm_store_ps(&dst[n+12], in1[3]);
}
for (; n < n_samples; n++) {
in[0] = _mm_load_ss(&src1[n]),