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resample: use some extra accumulators to improve pipelining

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This commit is contained in:
Wim Taymans 2026-04-23 09:32:31 +02:00
parent 75e432a49a
commit 596047aaef
3 changed files with 25 additions and 16 deletions
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9
spa/plugins/audioconvert/resample-native-sse.c
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@ -32,7 +32,8 @@ static inline void inner_product_ip_sse(float *d, const float * SPA_RESTRICT s,
const float * SPA_RESTRICT t0, const float * SPA_RESTRICT t1, float x,
uint32_t n_taps)
{
__m128 sum[2] = { _mm_setzero_ps (), _mm_setzero_ps () }, t;
__m128 sum[4] = { _mm_setzero_ps(), _mm_setzero_ps(),
_mm_setzero_ps(), _mm_setzero_ps() }, t;
uint32_t i;
for (i = 0; i < n_taps; i += 8) {
@ -40,9 +41,11 @@ static inline void inner_product_ip_sse(float *d, const float * SPA_RESTRICT s,
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(t, _mm_load_ps(t0 + i + 0)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(t, _mm_load_ps(t1 + i + 0)));
t = _mm_loadu_ps(s + i + 4);
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(t, _mm_load_ps(t0 + i + 4)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(t, _mm_load_ps(t1 + i + 4)));
sum[2] = _mm_add_ps(sum[2], _mm_mul_ps(t, _mm_load_ps(t0 + i + 4)));
sum[3] = _mm_add_ps(sum[3], _mm_mul_ps(t, _mm_load_ps(t1 + i + 4)));
}
sum[0] = _mm_add_ps(sum[0], sum[2]);
sum[1] = _mm_add_ps(sum[1], sum[3]);
sum[1] = _mm_mul_ps(_mm_sub_ps(sum[1], sum[0]), _mm_load1_ps(&x));
sum[0] = _mm_add_ps(sum[0], sum[1]);
sum[0] = _mm_add_ps(sum[0], _mm_movehl_ps(sum[0], sum[0]));