mirror of https://github.com/xianyi/OpenBLAS.git
147 lines
5.4 KiB
C
147 lines
5.4 KiB
C
/***************************************************************************
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Copyright (c) 2020, 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 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 OPENBLAS PROJECT 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 "common.h"
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#define FLOAT_V_T vfloat32m8_t
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#define VLEV_FLOAT RISCV_RVV(vle32_v_f32m8)
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#define VLSEV_FLOAT RISCV_RVV(vlse32_v_f32m8)
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#define VSEV_FLOAT RISCV_RVV(vse32_v_f32m8)
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#define VSSEV_FLOAT RISCV_RVV(vsse32_v_f32m8)
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#define VFMULVF_FLOAT RISCV_RVV(vfmul_vf_f32m8)
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#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f32m8)
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#define VSETVL(n) RISCV_RVV(vsetvl_e16m4)(n)
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#if defined(HFLOAT16)
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#define IFLOAT_V_T vfloat16m4_t
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#define VLEV_IFLOAT RISCV_RVV(vle16_v_f16m4)
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#define VFMACCVF_FLOAT RISCV_RVV(vfwmacc_vf_f32m8)
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#else
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#define IFLOAT_V_T vbfloat16m4_t
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#define VLEV_IFLOAT RISCV_RVV(vle16_v_bf16m4)
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#define VFMACCVF_FLOAT RISCV_RVV(vfwmaccbf16_vf_f32m8)
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#endif
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int CNAME(BLASLONG m, BLASLONG n, FLOAT alpha, IFLOAT *a, BLASLONG lda, IFLOAT *x, BLASLONG inc_x, FLOAT beta, FLOAT *y, BLASLONG inc_y)
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{
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if (n < 0) return(0);
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#if defined(HFLOAT16)
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_Float16 *a_ptr, *x_ptr, temp;
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x_ptr = (_Float16 *)(x);
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#else
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__bf16 *a_ptr, *x_ptr, temp;
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x_ptr = (__bf16 *)(x);
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#endif
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FLOAT *y_ptr;
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BLASLONG i, j, vl;
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IFLOAT_V_T va;
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FLOAT_V_T vy;
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y_ptr = y;
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if (inc_y == 1) {
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if (beta == 0.0) {
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VFMVVF_FLOAT(0.0, vl);
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VSEV_FLOAT(y_ptr, vy, vl);
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y_ptr += vl;
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}
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} else if (beta != 1.0) {
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VLEV_FLOAT(y_ptr, vl);
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vy = VFMULVF_FLOAT(vy, beta, vl);
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VSEV_FLOAT(y_ptr, vy, vl);
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y_ptr += vl;
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}
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}
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for (j = 0; j < n; j++) {
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#if defined(HFLOAT16)
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temp = (_Float16)(alpha * (FLOAT)(x_ptr[0]));
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a_ptr = (_Float16 *)(a);
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#else
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temp = (__bf16)(alpha * (FLOAT)(x_ptr[0]));
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a_ptr = (__bf16 *)(a);
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#endif
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y_ptr = y;
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VLEV_FLOAT(y_ptr, vl);
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va = VLEV_IFLOAT(a_ptr, vl);
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vy = VFMACCVF_FLOAT(vy, temp, va, vl);
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VSEV_FLOAT(y_ptr, vy, vl);
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y_ptr += vl;
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a_ptr += vl;
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}
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x_ptr += inc_x;
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a += lda;
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}
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} else {
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BLASLONG stride_y = inc_y * sizeof(FLOAT);
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if (beta == 0.0) {
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VFMVVF_FLOAT(0.0, vl);
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VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
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y_ptr += vl * inc_y;
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}
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} else if (beta != 1.0) {
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VLSEV_FLOAT(y_ptr, stride_y, vl);
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vy = VFMULVF_FLOAT(vy, beta, vl);
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VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
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y_ptr += vl * inc_y;
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}
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}
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for (j = 0; j < n; j++) {
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#if defined(HFLOAT16)
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temp = (_Float16)(alpha * (FLOAT)(x_ptr[0]));
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a_ptr = (_Float16 *)(a);
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#else
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temp = (__bf16)(alpha * (FLOAT)(x_ptr[0]));
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a_ptr = (__bf16 *)(a);
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#endif
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y_ptr = y;
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for (i = m; i > 0; i -= vl) {
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vl = VSETVL(i);
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vy = VLSEV_FLOAT(y_ptr, stride_y, vl);
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va = VLEV_IFLOAT(a_ptr, vl);
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vy = VFMACCVF_FLOAT(vy, temp, va, vl);
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VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
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y_ptr += vl * inc_y;
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a_ptr += vl;
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}
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x_ptr += inc_x;
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a += lda;
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}
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}
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return(0);
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}
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