138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/***************************************************************************
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Copyright (c) 2024, 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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#ifndef SBGEMV_T_COMMON_C
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#define SBGEMV_T_COMMON_C
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#if (defined(_ARCH_PWR10) && (defined(USE_BFGEMV_8_T_MMA) || (!defined(USE_BFGEMV_N_MMA) && defined(USE_BFGEMV_8_T_VSX)))) || (!defined(_ARCH_PWR10) && defined(USE_BFGEMV_8_T_VSX))
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#define USE_T_8
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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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IFLOAT *xbuffer, *a_ptr;
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IFLOAT buffer[NBMAX] __attribute__((aligned(16)));
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FLOAT ybuffer[8] __attribute__((aligned(16)));
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FLOAT *y_ptr;
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if ((m < 1) || (n < 1)) return 0;
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if (inc_y == 1) {
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BF16GEMV_N_beta(n, y, y, beta);
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}
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xbuffer = buffer;
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BLASLONG lda4 = lda << 2;
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#ifdef USE_T_8
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BLASLONG lda8 = lda << 3;
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#endif
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BLASLONG NB = NBMAX;
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BLASLONG m2 = (m & (NBMAX - 1));
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while (NB == NBMAX) {
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m -= NB;
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if (m < 0) {
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if (m2 == 0) break;
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NB = m2;
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}
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a_ptr = a;
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a += NB;
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y_ptr = y;
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if (inc_x != 1) {
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copy_x(NB, x, xbuffer, inc_x);
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x += NB * inc_x;
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} else {
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xbuffer = x;
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x += NB;
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}
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if (inc_y == 1) {
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#ifdef USE_T_8
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for (BLASLONG j = 0; j + 8 <= n; j += 8) {
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BF16GEMV_T_8(NB, lda, a_ptr, xbuffer, y_ptr, alpha);
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y_ptr += 8;
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a_ptr += lda8;
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}
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if (n & 4) {
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#else
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for (BLASLONG j = 0; j + 4 <= n; j += 4) {
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#endif
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BF16GEMV_T_4(NB, lda, a_ptr, xbuffer, y_ptr, alpha);
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y_ptr += 4;
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a_ptr += lda4;
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}
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if (n & 2) {
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BF16GEMV_T_2(NB, lda, a_ptr, xbuffer, y_ptr, alpha);
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y_ptr += 2;
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a_ptr += (lda * 2);
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}
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if (n & 1) {
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BF16GEMV_T_1(NB, lda, a_ptr, xbuffer, y_ptr, alpha);
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}
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} else {
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#ifdef USE_T_8
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for (BLASLONG j = 0; j + 8 <= n; j += 8) {
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memset(ybuffer, 0, sizeof(FLOAT) * 8);
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BF16GEMV_T_8(NB, lda, a_ptr, xbuffer, ybuffer, alpha);
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copy_y(8, ybuffer, y_ptr, inc_y, beta);
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y_ptr += 8 * inc_y;
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a_ptr += lda8;
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}
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if (n & 4) {
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#else
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for (BLASLONG j = 0; j + 4 <= n; j += 4) {
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#endif
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memset(ybuffer, 0, sizeof(FLOAT) * 4);
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BF16GEMV_T_4(NB, lda, a_ptr, xbuffer, ybuffer, alpha);
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copy_y(4, ybuffer, y_ptr, inc_y, beta);
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y_ptr += 4 * inc_y;
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a_ptr += lda4;
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}
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if (n & 2) {
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memset(ybuffer, 0, sizeof(FLOAT) * 4);
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BF16GEMV_T_2(NB, lda, a_ptr, xbuffer, ybuffer, alpha);
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copy_y(2, ybuffer, y_ptr, inc_y, beta);
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y_ptr += 2 * inc_y;
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a_ptr += (lda * 2);
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}
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if (n & 1) {
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memset(ybuffer, 0, sizeof(FLOAT) * 4);
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BF16GEMV_T_1(NB, lda, a_ptr, xbuffer, ybuffer, alpha);
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copy_y(1, ybuffer, y_ptr, inc_y, beta);
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}
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beta = (FLOAT)1;
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}
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}
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return 0;
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}
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#endif
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