178 lines
4.8 KiB
C
178 lines
4.8 KiB
C
/***************************************************************************
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Copyright (c) 2013-2019, 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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static void dscal_kernel_16(BLASLONG n, FLOAT da, FLOAT *x) {
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__asm__("vlrepg %%v0,%[da]\n\t"
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"srlg %[n],%[n],4\n\t"
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"xgr %%r1,%%r1\n\t"
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"0:\n\t"
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"pfd 2, 1024(%%r1,%[x])\n\t"
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"vl %%v24,0(%%r1,%[x])\n\t"
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"vfmdb %%v24,%%v24,%%v0\n\t"
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"vst %%v24,0(%%r1,%[x])\n\t"
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"vl %%v25,16(%%r1,%[x])\n\t"
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"vfmdb %%v25,%%v25,%%v0\n\t"
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"vst %%v25,16(%%r1,%[x])\n\t"
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"vl %%v26,32(%%r1,%[x])\n\t"
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"vfmdb %%v26,%%v26,%%v0\n\t"
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"vst %%v26,32(%%r1,%[x])\n\t"
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"vl %%v27,48(%%r1,%[x])\n\t"
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"vfmdb %%v27,%%v27,%%v0\n\t"
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"vst %%v27,48(%%r1,%[x])\n\t"
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"vl %%v28,64(%%r1,%[x])\n\t"
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"vfmdb %%v28,%%v28,%%v0\n\t"
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"vst %%v28,64(%%r1,%[x])\n\t"
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"vl %%v29,80(%%r1,%[x])\n\t"
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"vfmdb %%v29,%%v29,%%v0\n\t"
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"vst %%v29,80(%%r1,%[x])\n\t"
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"vl %%v30,96(%%r1,%[x])\n\t"
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"vfmdb %%v30,%%v30,%%v0\n\t"
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"vst %%v30,96(%%r1,%[x])\n\t"
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"vl %%v31,112(%%r1,%[x])\n\t"
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"vfmdb %%v31,%%v31,%%v0\n\t"
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"vst %%v31,112(%%r1,%[x])\n\t"
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"agfi %%r1,128\n\t"
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"brctg %[n],0b"
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: "+m"(*(FLOAT (*)[n]) x),[n] "+&r"(n)
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: [x] "a"(x),[da] "Q"(da)
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: "cc", "r1", "v0", "v24", "v25", "v26", "v27", "v28", "v29", "v30",
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"v31");
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}
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static void dscal_kernel_16_zero(BLASLONG n, FLOAT *x) {
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__asm__("vzero %%v0\n\t"
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"srlg %[n],%[n],4\n\t"
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"xgr %%r1,%%r1\n\t"
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"0:\n\t"
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"pfd 2, 1024(%%r1,%[x])\n\t"
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"vst %%v0,0(%%r1,%[x])\n\t"
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"vst %%v0,16(%%r1,%[x])\n\t"
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"vst %%v0,32(%%r1,%[x])\n\t"
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"vst %%v0,48(%%r1,%[x])\n\t"
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"vst %%v0,64(%%r1,%[x])\n\t"
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"vst %%v0,80(%%r1,%[x])\n\t"
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"vst %%v0,96(%%r1,%[x])\n\t"
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"vst %%v0,112(%%r1,%[x])\n\t"
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"agfi %%r1,128\n\t"
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"brctg %[n],0b"
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: "=m"(*(FLOAT (*)[n]) x),[n] "+&r"(n)
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: [x] "a"(x)
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: "cc", "r1", "v0");
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}
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int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da, FLOAT *x,
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BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy,
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BLASLONG dummy2) {
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BLASLONG i = 0, j = 0;
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if (n <= 0 || inc_x <= 0)
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return (0);
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if (inc_x == 1) {
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if (da == 0.0) {
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BLASLONG n1 = n & -16;
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if (n1 > 0) {
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dscal_kernel_16_zero(n1, x);
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j = n1;
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}
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while (j < n) {
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x[j] = 0.0;
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j++;
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}
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} else {
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BLASLONG n1 = n & -16;
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if (n1 > 0) {
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dscal_kernel_16(n1, da, x);
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j = n1;
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}
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while (j < n) {
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x[j] = da * x[j];
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j++;
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}
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}
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} else {
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if (da == 0.0) {
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BLASLONG n1 = n & -4;
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while (j < n1) {
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x[i] = 0.0;
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x[i + inc_x] = 0.0;
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x[i + 2 * inc_x] = 0.0;
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x[i + 3 * inc_x] = 0.0;
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i += inc_x * 4;
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j += 4;
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}
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while (j < n) {
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x[i] = 0.0;
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i += inc_x;
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j++;
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}
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} else {
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BLASLONG n1 = n & -4;
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while (j < n1) {
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x[i] = da * x[i];
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x[i + inc_x] = da * x[i + inc_x];
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x[i + 2 * inc_x] = da * x[i + 2 * inc_x];
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x[i + 3 * inc_x] = da * x[i + 3 * inc_x];
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i += inc_x * 4;
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j += 4;
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}
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while (j < n) {
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x[i] = da * x[i];
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i += inc_x;
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j++;
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}
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}
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}
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return 0;
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}
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