44 lines
2.0 KiB
C
44 lines
2.0 KiB
C
#include "sn_intrinsic.h"
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// ans = left * right + ans
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INTERNAL void SN_DECL f32_fma_sse(MAT_KERNEL(float) const *restrict left,
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MAT_KERNEL(float) const *restrict right,
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MAT_KERNEL(float) *restrict ans)
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{
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register __m128 source0 = _mm_load_ps(&left->xmm[0]);
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register __m128 source1 = _mm_load_ps(&left->xmm[1]);
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register __m128 source2 = _mm_load_ps(&left->xmm[2]);
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register __m128 source3 = _mm_load_ps(&left->xmm[3]);
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register __m128 broadcast;
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register __m128 ans0 = _mm_setzero_ps();
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register __m128 ans1 = _mm_setzero_ps();
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register __m128 ans2 = _mm_setzero_ps();
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register __m128 ans3 = _mm_setzero_ps();
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for (size_t i = 0; i < 3; i++) {
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broadcast = _mm_load_ps(&right->xmm[i]);
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_mm_add_ps(ans0, _mm_mul_ps(source0, broadcast));
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_mm_add_ps(ans1, _mm_mul_ps(source1, broadcast));
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_mm_add_ps(ans2, _mm_mul_ps(source2, broadcast));
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_mm_add_ps(ans3, _mm_mul_ps(source3, broadcast));
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for (size_t t = 0; t < 2; t++) {
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broadcast = _mm_shuffle_ps(broadcast, broadcast, _MM_SHUFFLE(2, 1, 0, 3));
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_mm_add_ps(ans0, _mm_mul_ps(source0, broadcast));
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_mm_add_ps(ans1, _mm_mul_ps(source1, broadcast));
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_mm_add_ps(ans2, _mm_mul_ps(source2, broadcast));
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_mm_add_ps(ans3, _mm_mul_ps(source3, broadcast));
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}
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}
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source0 = _mm_load_ps(&ans->xmm[0]);
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source1 = _mm_load_ps(&ans->xmm[1]);
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source2 = _mm_load_ps(&ans->xmm[2]);
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source3 = _mm_load_ps(&ans->xmm[3]);
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_mm_store_ps(&ans->xmm[0], _mm_add_ps(source0, ans0));
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_mm_store_ps(&ans->xmm[1], _mm_add_ps(source1, ans1));
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_mm_store_ps(&ans->xmm[2], _mm_add_ps(source2, ans2));
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_mm_store_ps(&ans->xmm[3], _mm_add_ps(source3, ans3));
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}
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