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cleanup float<->int conversions

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This commit is contained in:
Jean-Marc Valin 2021-07-06 17:59:21 -04:00
parent 60d6eab63d
commit 44fe055682
1 changed files with 7 additions and 7 deletions
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14
dnn/vec_avx.h
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@ -474,9 +474,7 @@ static inline void sparse_sgemv_accum8x4(float *_out, const qweight *w, int rows
__m256i ones;
int i, j;
unsigned char x[MAX_INPUTS];
int out[MAX_OUTPUTS];
ones = _mm256_set1_epi16(1);
for (i=0;i<rows;i++) out[i] = SCALE*_out[i];
//for (i=0;i<cols;i++) x[i] = 127+floor(.5+127*_x[i]);
__m256 const127 = _mm256_set1_ps(127.f);
for (i=0;i<cols;i+=8) {
@ -496,12 +494,13 @@ static inline void sparse_sgemv_accum8x4(float *_out, const qweight *w, int rows
}
for (i=0;i<rows;i+=8)
{
int * restrict y;
int colblocks;
__m256i vy0;
__m256 vout;
colblocks = *idx++;
y = &out[i];
vy0 = _mm256_loadu_si256((const __m256i *)&y[0]);
vout = _mm256_loadu_ps(&_out[i]);
vout = _mm256_mul_ps(vout, _mm256_set1_ps(SCALE));
vy0 = _mm256_cvtps_epi32(vout);
j=0;
#if 1 /* Unrolling by 4 gives some gain, comment out if it does not. */
for (;j<colblocks-3;j+=4)
@ -549,9 +548,10 @@ static inline void sparse_sgemv_accum8x4(float *_out, const qweight *w, int rows
vy0 = _mm256_add_epi32(vy0, tmp);
w += 32;
}
_mm256_storeu_si256 ((__m256i *)&y[0], vy0);
vout = _mm256_cvtepi32_ps(vy0);
vout = _mm256_mul_ps(vout, _mm256_set1_ps(SCALE_1));
_mm256_storeu_ps(&_out[i], vout);
}
for (i=0;i<rows;i++) _out[i] = SCALE_1*out[i];
}