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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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21
spa/plugins/audioconvert/resample-native-ssse3.c
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@ -82,7 +82,8 @@ static inline void inner_product_ip_ssse3(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() };
__m128 sum[4] = { _mm_setzero_ps(), _mm_setzero_ps(),
_mm_setzero_ps(), _mm_setzero_ps() };
__m128 r0, r1, r;
uint32_t i;
@ -93,8 +94,8 @@ static inline void inner_product_ip_ssse3(float *d, const float * SPA_RESTRICT s
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(r, _mm_load_ps(t0 + i + 0)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(r, _mm_load_ps(t1 + i + 0)));
r = _mm_load_ps(s + i + 4);
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
sum[2] = _mm_add_ps(sum[2], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[3] = _mm_add_ps(sum[3], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
}
break;
case 4:
@ -107,8 +108,8 @@ static inline void inner_product_ip_ssse3(float *d, const float * SPA_RESTRICT s
r0 = r1;
r1 = _mm_load_ps(s + i + 7);
r = (__m128)_mm_alignr_epi8((__m128i)r1, (__m128i)r0, 4);
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
sum[2] = _mm_add_ps(sum[2], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[3] = _mm_add_ps(sum[3], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
r0 = r1;
}
break;
@ -122,8 +123,8 @@ static inline void inner_product_ip_ssse3(float *d, const float * SPA_RESTRICT s
r0 = r1;
r1 = _mm_load_ps(s + i + 6);
r = (__m128)_mm_alignr_epi8((__m128i)r1, (__m128i)r0, 8);
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
sum[2] = _mm_add_ps(sum[2], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[3] = _mm_add_ps(sum[3], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
r0 = r1;
}
break;
@ -137,12 +138,14 @@ static inline void inner_product_ip_ssse3(float *d, const float * SPA_RESTRICT s
r0 = r1;
r1 = _mm_load_ps(s + i + 5);
r = (__m128)_mm_alignr_epi8((__m128i)r1, (__m128i)r0, 12);
sum[0] = _mm_add_ps(sum[0], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[1] = _mm_add_ps(sum[1], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
sum[2] = _mm_add_ps(sum[2], _mm_mul_ps(r, _mm_load_ps(t0 + i + 4)));
sum[3] = _mm_add_ps(sum[3], _mm_mul_ps(r, _mm_load_ps(t1 + i + 4)));
r0 = r1;
}
break;
}
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_movehdup_ps(sum[0]));