149 lines
4.5 KiB
C
149 lines
4.5 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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#include <math.h>
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static FLOAT dsum_kernel_32(BLASLONG n, FLOAT *x) {
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FLOAT sum;
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__asm__("vzero %%v24\n\t"
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"vzero %%v25\n\t"
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"vzero %%v26\n\t"
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"vzero %%v27\n\t"
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"vzero %%v28\n\t"
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"vzero %%v29\n\t"
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"vzero %%v30\n\t"
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"vzero %%v31\n\t"
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"srlg %[n],%[n],5\n\t"
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"xgr %%r1,%%r1\n\t"
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"0:\n\t"
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"pfd 1, 1024(%%r1,%[x])\n\t"
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"vl %%v16, 0(%%r1,%[x])\n\t"
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"vl %%v17, 16(%%r1,%[x])\n\t"
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"vl %%v18, 32(%%r1,%[x])\n\t"
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"vl %%v19, 48(%%r1,%[x])\n\t"
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"vl %%v20, 64(%%r1,%[x])\n\t"
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"vl %%v21, 80(%%r1,%[x])\n\t"
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"vl %%v22, 96(%%r1,%[x])\n\t"
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"vl %%v23, 112(%%r1,%[x])\n\t"
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"vfadb %%v24,%%v24,%%v16\n\t"
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"vfadb %%v25,%%v25,%%v17\n\t"
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"vfadb %%v26,%%v26,%%v18\n\t"
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"vfadb %%v27,%%v27,%%v19\n\t"
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"vfadb %%v28,%%v28,%%v20\n\t"
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"vfadb %%v29,%%v29,%%v21\n\t"
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"vfadb %%v30,%%v30,%%v22\n\t"
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"vfadb %%v31,%%v31,%%v23\n\t"
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"vl %%v16, 128(%%r1,%[x])\n\t"
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"vl %%v17, 144(%%r1,%[x])\n\t"
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"vl %%v18, 160(%%r1,%[x])\n\t"
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"vl %%v19, 176(%%r1,%[x])\n\t"
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"vl %%v20, 192(%%r1,%[x])\n\t"
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"vl %%v21, 208(%%r1,%[x])\n\t"
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"vl %%v22, 224(%%r1,%[x])\n\t"
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"vl %%v23, 240(%%r1,%[x])\n\t"
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"vfadb %%v24,%%v24,%%v16\n\t"
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"vfadb %%v25,%%v25,%%v17\n\t"
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"vfadb %%v26,%%v26,%%v18\n\t"
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"vfadb %%v27,%%v27,%%v19\n\t"
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"vfadb %%v28,%%v28,%%v20\n\t"
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"vfadb %%v29,%%v29,%%v21\n\t"
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"vfadb %%v30,%%v30,%%v22\n\t"
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"vfadb %%v31,%%v31,%%v23\n\t"
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"agfi %%r1,256\n\t"
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"brctg %[n],0b\n\t"
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"vfadb %%v24,%%v24,%%v25\n\t"
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"vfadb %%v24,%%v24,%%v26\n\t"
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"vfadb %%v24,%%v24,%%v27\n\t"
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"vfadb %%v24,%%v24,%%v28\n\t"
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"vfadb %%v24,%%v24,%%v29\n\t"
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"vfadb %%v24,%%v24,%%v30\n\t"
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"vfadb %%v24,%%v24,%%v31\n\t"
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"vrepg %%v25,%%v24,1\n\t"
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"vfadb %%v24,%%v24,%%v25\n\t"
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"vsteg %%v24,%[sum],0"
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: [sum] "=Q"(sum),[n] "+&r"(n)
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: "m"(*(const FLOAT (*)[n]) x),[x] "a"(x)
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: "cc", "r1", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23",
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"v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31");
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return sum;
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}
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x) {
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BLASLONG i = 0;
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BLASLONG j = 0;
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FLOAT sumf = 0.0;
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BLASLONG n1;
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if (n <= 0 || inc_x <= 0)
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return sumf;
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if (inc_x == 1) {
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n1 = n & -32;
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if (n1 > 0) {
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sumf = dsum_kernel_32(n1, x);
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i = n1;
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}
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while (i < n) {
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sumf += x[i];
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i++;
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}
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} else {
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BLASLONG n1 = n & -4;
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register FLOAT sum1, sum2;
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sum1 = 0.0;
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sum2 = 0.0;
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while (j < n1) {
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sum1 += x[i];
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sum2 += x[i + inc_x];
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sum1 += x[i + 2 * inc_x];
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sum2 += 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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sumf = sum1 + sum2;
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while (j < n) {
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sumf += 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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return sumf;
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}
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