177 lines
5.5 KiB
C
177 lines
5.5 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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static void cdot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *d) {
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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],4\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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"pfd 1, 1024(%%r1,%[y])\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 %%v0, 0(%%r1,%[y])\n\t"
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"vl %%v1, 16(%%r1,%[y])\n\t"
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"vl %%v2, 32(%%r1,%[y])\n\t"
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"vl %%v3, 48(%%r1,%[y])\n\t"
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"verllg %%v20,%%v16,32\n\t"
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"verllg %%v21,%%v17,32\n\t"
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"verllg %%v22,%%v18,32\n\t"
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"verllg %%v23,%%v19,32\n\t"
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"vfmasb %%v24,%%v16,%%v0,%%v24\n\t"
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"vfmasb %%v25,%%v20,%%v0,%%v25\n\t"
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"vfmasb %%v26,%%v17,%%v1,%%v26\n\t"
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"vfmasb %%v27,%%v21,%%v1,%%v27\n\t"
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"vfmasb %%v28,%%v18,%%v2,%%v28\n\t"
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"vfmasb %%v29,%%v22,%%v2,%%v29\n\t"
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"vfmasb %%v30,%%v19,%%v3,%%v30\n\t"
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"vfmasb %%v31,%%v23,%%v3,%%v31\n\t"
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"vl %%v16, 64(%%r1,%[x])\n\t"
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"vl %%v17, 80(%%r1,%[x])\n\t"
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"vl %%v18, 96(%%r1,%[x])\n\t"
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"vl %%v19, 112(%%r1,%[x])\n\t"
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"vl %%v0, 64(%%r1,%[y])\n\t"
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"vl %%v1, 80(%%r1,%[y])\n\t"
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"vl %%v2, 96(%%r1,%[y])\n\t"
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"vl %%v3, 112(%%r1,%[y])\n\t"
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"verllg %%v20,%%v16,32\n\t"
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"verllg %%v21,%%v17,32\n\t"
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"verllg %%v22,%%v18,32\n\t"
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"verllg %%v23,%%v19,32\n\t"
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"vfmasb %%v24,%%v16,%%v0,%%v24\n\t"
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"vfmasb %%v25,%%v20,%%v0,%%v25\n\t"
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"vfmasb %%v26,%%v17,%%v1,%%v26\n\t"
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"vfmasb %%v27,%%v21,%%v1,%%v27\n\t"
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"vfmasb %%v28,%%v18,%%v2,%%v28\n\t"
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"vfmasb %%v29,%%v22,%%v2,%%v29\n\t"
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"vfmasb %%v30,%%v19,%%v3,%%v30\n\t"
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"vfmasb %%v31,%%v23,%%v3,%%v31\n\t"
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"agfi %%r1,128\n\t"
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"brctg %[n],0b\n\t"
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"vfasb %%v24,%%v24,%%v26\n\t"
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"vfasb %%v24,%%v24,%%v28\n\t"
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"vfasb %%v24,%%v24,%%v30\n\t"
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"vrepg %%v26,%%v24,1\n\t"
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"vfasb %%v24,%%v24,%%v26\n\t"
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"vfasb %%v25,%%v25,%%v27\n\t"
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"vfasb %%v25,%%v25,%%v29\n\t"
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"vfasb %%v25,%%v25,%%v31\n\t"
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"vrepg %%v27,%%v25,1\n\t"
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"vfasb %%v25,%%v25,%%v27\n\t"
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"vstef %%v24,0(%[d]),0\n\t"
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"vstef %%v24,4(%[d]),1\n\t"
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"vstef %%v25,8(%[d]),1\n\t"
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"vstef %%v25,12(%[d]),0"
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: "=m"(*(FLOAT (*)[4]) d),[n] "+&r"(n)
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: [d] "a"(d), "m"(*(const FLOAT (*)[n * 2]) x),[x] "a"(x),
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"m"(*(const FLOAT (*)[n * 2]) y),[y] "a"(y)
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: "cc", "r1", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19", "v20",
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"v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30",
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"v31");
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}
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OPENBLAS_COMPLEX_FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y,
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BLASLONG inc_y) {
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BLASLONG i;
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BLASLONG ix, iy;
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OPENBLAS_COMPLEX_FLOAT result;
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FLOAT dot[4] __attribute__ ((aligned(16))) = {
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0.0, 0.0, 0.0, 0.0};
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if (n <= 0) {
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CREAL(result) = 0.0;
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CIMAG(result) = 0.0;
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return (result);
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}
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if ((inc_x == 1) && (inc_y == 1)) {
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BLASLONG n1 = n & -16;
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if (n1)
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cdot_kernel_16(n1, x, y, dot);
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i = n1;
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BLASLONG j = i * 2;
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while (i < n) {
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dot[0] += x[j] * y[j];
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dot[1] += x[j + 1] * y[j + 1];
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dot[2] += x[j] * y[j + 1];
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dot[3] += x[j + 1] * y[j];
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j += 2;
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i++;
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}
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} else {
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i = 0;
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ix = 0;
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iy = 0;
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inc_x <<= 1;
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inc_y <<= 1;
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while (i < n) {
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dot[0] += x[ix] * y[iy];
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dot[1] += x[ix + 1] * y[iy + 1];
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dot[2] += x[ix] * y[iy + 1];
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dot[3] += x[ix + 1] * y[iy];
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ix += inc_x;
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iy += inc_y;
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i++;
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}
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}
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#if !defined(CONJ)
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CREAL(result) = dot[0] - dot[1];
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CIMAG(result) = dot[2] + dot[3];
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#else
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CREAL(result) = dot[0] + dot[1];
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CIMAG(result) = dot[2] - dot[3];
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#endif
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return (result);
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}
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