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Merge pull request #5225 from annop-w/gemv_n
Improve performance for SGEMVN on NEONVERSEN1
This commit is contained in:
Martin Kroeker
@@ -60,7 +60,7 @@ DSCALKERNEL = scal.S
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CSCALKERNEL = zscal.S
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ZSCALKERNEL = zscal.S
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SGEMVNKERNEL = gemv_n.S
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SGEMVNKERNEL = sgemv_n_neon.c
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DGEMVNKERNEL = gemv_n.S
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CGEMVNKERNEL = zgemv_n.S
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ZGEMVNKERNEL = zgemv_n.S
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219
kernel/arm64/sgemv_n_neon.c
Normal file
219
kernel/arm64/sgemv_n_neon.c
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@@ -0,0 +1,219 @@
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/***************************************************************************
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Copyright (c) 2025, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <arm_neon.h>
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#include "common.h"
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
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{
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BLASLONG i;
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BLASLONG ix,iy;
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BLASLONG j;
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FLOAT *a_ptr;
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FLOAT temp;
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ix = 0;
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a_ptr = a;
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if (inc_x == 1 && inc_y == 1) {
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FLOAT *a0_ptr = a + lda * 0;
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FLOAT *a1_ptr = a + lda * 1;
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FLOAT *a2_ptr = a + lda * 2;
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FLOAT *a3_ptr = a + lda * 3;
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FLOAT *a4_ptr = a + lda * 4;
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FLOAT *a5_ptr = a + lda * 5;
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FLOAT *a6_ptr = a + lda * 6;
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FLOAT *a7_ptr = a + lda * 7;
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j = 0;
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while (j + 3 < n) {
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float32x4_t x0_vec = vld1q_f32(x + j);
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x0_vec = vmulq_n_f32(x0_vec, alpha);
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i = 0;
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while (i + 7 < m) {
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float32x4_t a00_vec = vld1q_f32(a0_ptr + i);
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float32x4_t a01_vec = vld1q_f32(a0_ptr + i + 4);
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float32x4_t a10_vec = vld1q_f32(a1_ptr + i);
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float32x4_t a11_vec = vld1q_f32(a1_ptr + i + 4);
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float32x4_t a20_vec = vld1q_f32(a2_ptr + i);
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float32x4_t a21_vec = vld1q_f32(a2_ptr + i + 4);
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float32x4_t a30_vec = vld1q_f32(a3_ptr + i);
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float32x4_t a31_vec = vld1q_f32(a3_ptr + i + 4);
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float32x4_t y0_vec = vld1q_f32(y + i);
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float32x4_t y1_vec = vld1q_f32(y + i + 4);
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y0_vec = vmlaq_laneq_f32(y0_vec, a00_vec, x0_vec, 0);
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y0_vec = vmlaq_laneq_f32(y0_vec, a10_vec, x0_vec, 1);
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y0_vec = vmlaq_laneq_f32(y0_vec, a20_vec, x0_vec, 2);
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y0_vec = vmlaq_laneq_f32(y0_vec, a30_vec, x0_vec, 3);
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y1_vec = vmlaq_laneq_f32(y1_vec, a01_vec, x0_vec, 0);
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y1_vec = vmlaq_laneq_f32(y1_vec, a11_vec, x0_vec, 1);
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y1_vec = vmlaq_laneq_f32(y1_vec, a21_vec, x0_vec, 2);
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y1_vec = vmlaq_laneq_f32(y1_vec, a31_vec, x0_vec, 3);
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vst1q_f32(y + i, y0_vec);
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vst1q_f32(y + i + 4, y1_vec);
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i += 8;
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}
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while (i + 3 < m) {
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float32x4_t a0_vec = vld1q_f32(a0_ptr + i);
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float32x4_t a1_vec = vld1q_f32(a1_ptr + i);
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float32x4_t a2_vec = vld1q_f32(a2_ptr + i);
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float32x4_t a3_vec = vld1q_f32(a3_ptr + i);
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float32x4_t y_vec = vld1q_f32(y + i);
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y_vec = vmlaq_laneq_f32(y_vec, a0_vec, x0_vec, 0);
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y_vec = vmlaq_laneq_f32(y_vec, a1_vec, x0_vec, 1);
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y_vec = vmlaq_laneq_f32(y_vec, a2_vec, x0_vec, 2);
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y_vec = vmlaq_laneq_f32(y_vec, a3_vec, x0_vec, 3);
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vst1q_f32(y + i, y_vec);
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i += 4;
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}
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while (i + 1 < m) {
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float32x2_t a0_vec = vld1_f32(a0_ptr + i);
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float32x2_t a1_vec = vld1_f32(a1_ptr + i);
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float32x2_t a2_vec = vld1_f32(a2_ptr + i);
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float32x2_t a3_vec = vld1_f32(a3_ptr + i);
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float32x2_t y_vec = vld1_f32(y + i);
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y_vec = vmla_laneq_f32(y_vec, a0_vec, x0_vec, 0);
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y_vec = vmla_laneq_f32(y_vec, a1_vec, x0_vec, 1);
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y_vec = vmla_laneq_f32(y_vec, a2_vec, x0_vec, 2);
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y_vec = vmla_laneq_f32(y_vec, a3_vec, x0_vec, 3);
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vst1_f32(y + i, y_vec);
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i += 2;
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}
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while (i < m) {
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y[i] += a0_ptr[i] * x0_vec[0];
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y[i] += a1_ptr[i] * x0_vec[1];
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y[i] += a2_ptr[i] * x0_vec[2];
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y[i] += a3_ptr[i] * x0_vec[3];
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i++;
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}
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a0_ptr += lda * 4;
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a1_ptr += lda * 4;
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a2_ptr += lda * 4;
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a3_ptr += lda * 4;
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j += 4;
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}
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while (j + 1 < n) {
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float32x2_t x0_vec = vld1_f32(x + j);
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x0_vec = vmul_n_f32(x0_vec, alpha);
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i = 0;
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while (i + 7 < m) {
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float32x4_t a00_vec = vld1q_f32(a0_ptr + i);
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float32x4_t a01_vec = vld1q_f32(a0_ptr + i + 4);
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float32x4_t a10_vec = vld1q_f32(a1_ptr + i);
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float32x4_t a11_vec = vld1q_f32(a1_ptr + i + 4);
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float32x4_t y0_vec = vld1q_f32(y + i);
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float32x4_t y1_vec = vld1q_f32(y + i + 4);
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y0_vec = vmlaq_lane_f32(y0_vec, a00_vec, x0_vec, 0);
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y0_vec = vmlaq_lane_f32(y0_vec, a10_vec, x0_vec, 1);
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y1_vec = vmlaq_lane_f32(y1_vec, a01_vec, x0_vec, 0);
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y1_vec = vmlaq_lane_f32(y1_vec, a11_vec, x0_vec, 1);
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vst1q_f32(y + i, y0_vec);
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vst1q_f32(y + i + 4, y1_vec);
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i += 8;
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}
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while (i + 3 < m) {
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float32x4_t a0_vec = vld1q_f32(a0_ptr + i);
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float32x4_t a1_vec = vld1q_f32(a1_ptr + i);
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float32x4_t y_vec = vld1q_f32(y + i);
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y_vec = vmlaq_lane_f32(y_vec, a0_vec, x0_vec, 0);
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y_vec = vmlaq_lane_f32(y_vec, a1_vec, x0_vec, 1);
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vst1q_f32(y + i, y_vec);
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i += 4;
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}
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while (i + 1 < m) {
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float32x2_t a0_vec = vld1_f32(a0_ptr + i);
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float32x2_t a1_vec = vld1_f32(a1_ptr + i);
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float32x2_t y_vec = vld1_f32(y + i);
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y_vec = vmla_lane_f32(y_vec, a0_vec, x0_vec, 0);
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y_vec = vmla_lane_f32(y_vec, a1_vec, x0_vec, 1);
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vst1_f32(y + i, y_vec);
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i += 2;
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}
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while (i < m) {
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y[i] += a0_ptr[i] * x0_vec[0];
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y[i] += a1_ptr[i] * x0_vec[1];
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i++;
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}
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a0_ptr += lda * 2;
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a1_ptr += lda * 2;
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j += 2;
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}
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while (j < n) {
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i = 0;
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temp = alpha * x[j];
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while (i < m) {
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y[i] += a0_ptr[i] * temp;
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i++;
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}
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a0_ptr += lda;
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j++;
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}
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return (0);
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}
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for (j = 0; j < n; j++) {
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temp = alpha * x[ix];
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iy = 0;
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for (i = 0; i < m; i++) {
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y[iy] += temp * a_ptr[i];
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iy += inc_y;
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}
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a_ptr += lda;
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ix += inc_x;
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}
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return (0);
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}
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