174 lines
5.4 KiB
C
174 lines
5.4 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 double dsdot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y) {
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double dot;
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__asm__("vzero %%v0\n\t"
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"vzero %%v1\n\t"
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"vzero %%v2\n\t"
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"vzero %%v3\n\t"
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"vzero %%v4\n\t"
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"vzero %%v5\n\t"
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"vzero %%v6\n\t"
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"vzero %%v7\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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"vlef %%v16,0(%%r1,%[x]),0\n\t"
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"vlef %%v16,4(%%r1,%[x]),2\n\t"
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"vlef %%v17,8(%%r1,%[x]),0\n\t"
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"vlef %%v17,12(%%r1,%[x]),2\n\t"
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"vlef %%v18,16(%%r1,%[x]),0\n\t"
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"vlef %%v18,20(%%r1,%[x]),2\n\t"
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"vlef %%v19,24(%%r1,%[x]),0\n\t"
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"vlef %%v19,28(%%r1,%[x]),2\n\t"
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"vlef %%v20,32(%%r1,%[x]),0\n\t"
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"vlef %%v20,36(%%r1,%[x]),2\n\t"
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"vlef %%v21,40(%%r1,%[x]),0\n\t"
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"vlef %%v21,44(%%r1,%[x]),2\n\t"
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"vlef %%v22,48(%%r1,%[x]),0\n\t"
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"vlef %%v22,52(%%r1,%[x]),2\n\t"
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"vlef %%v23,56(%%r1,%[x]),0\n\t"
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"vlef %%v23,60(%%r1,%[x]),2\n\t"
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"vflls %%v16,%%v16\n\t"
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"vflls %%v17,%%v17\n\t"
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"vflls %%v18,%%v18\n\t"
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"vflls %%v19,%%v19\n\t"
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"vflls %%v20,%%v20\n\t"
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"vflls %%v21,%%v21\n\t"
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"vflls %%v22,%%v22\n\t"
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"vflls %%v23,%%v23\n\t"
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"vlef %%v24,0(%%r1,%[y]),0\n\t"
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"vlef %%v24,4(%%r1,%[y]),2\n\t"
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"vflls %%v24,%%v24\n\t"
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"vfmadb %%v0,%%v16,%%v24,%%v0\n\t"
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"vlef %%v25,8(%%r1,%[y]),0\n\t"
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"vlef %%v25,12(%%r1,%[y]),2\n\t"
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"vflls %%v25,%%v25\n\t"
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"vfmadb %%v1,%%v17,%%v25,%%v1\n\t"
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"vlef %%v26,16(%%r1,%[y]),0\n\t"
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"vlef %%v26,20(%%r1,%[y]),2\n\t"
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"vflls %%v26,%%v26\n\t"
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"vfmadb %%v2,%%v18,%%v26,%%v2\n\t"
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"vlef %%v27,24(%%r1,%[y]),0\n\t"
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"vlef %%v27,28(%%r1,%[y]),2\n\t"
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"vflls %%v27,%%v27\n\t"
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"vfmadb %%v3,%%v19,%%v27,%%v3\n\t"
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"vlef %%v28,32(%%r1,%[y]),0\n\t"
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"vlef %%v28,36(%%r1,%[y]),2\n\t"
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"vflls %%v28,%%v28\n\t"
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"vfmadb %%v4,%%v20,%%v28,%%v4\n\t"
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"vlef %%v29,40(%%r1,%[y]),0\n\t"
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"vlef %%v29,44(%%r1,%[y]),2\n\t"
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"vflls %%v29,%%v29\n\t"
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"vfmadb %%v5,%%v21,%%v29,%%v5\n\t"
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"vlef %%v30,48(%%r1,%[y]),0\n\t"
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"vlef %%v30,52(%%r1,%[y]),2\n\t"
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"vflls %%v30,%%v30\n\t"
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"vfmadb %%v6,%%v22,%%v30,%%v6\n\t"
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"vlef %%v31,56(%%r1,%[y]),0\n\t"
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"vlef %%v31,60(%%r1,%[y]),2\n\t"
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"vflls %%v31,%%v31\n\t"
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"vfmadb %%v7,%%v23,%%v31,%%v7\n\t"
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"agfi %%r1,64\n\t"
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"brctg %[n],0b\n\t"
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"vfadb %%v0,%%v0,%%v1\n\t"
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"vfadb %%v0,%%v0,%%v2\n\t"
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"vfadb %%v0,%%v0,%%v3\n\t"
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"vfadb %%v0,%%v0,%%v4\n\t"
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"vfadb %%v0,%%v0,%%v5\n\t"
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"vfadb %%v0,%%v0,%%v6\n\t"
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"vfadb %%v0,%%v0,%%v7\n\t"
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"vrepg %%v1,%%v0,1\n\t"
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"adbr %%f0,%%f1\n\t"
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"ldr %[dot],%%f0"
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: [dot] "=f"(dot),[n] "+&r"(n)
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: "m"(*(const FLOAT (*)[n]) x),[x] "a"(x),
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"m"(*(const FLOAT (*)[n]) y),[y] "a"(y)
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: "cc", "r1", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v16",
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"v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26",
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"v27", "v28", "v29", "v30", "v31");
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return dot;
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}
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double CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) {
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BLASLONG i = 0;
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BLASLONG ix = 0, iy = 0;
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double dot = 0.0;
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if (n <= 0)
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return (dot);
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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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dot = dsdot_kernel_16(n1, x, y);
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i = n1;
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while (i < n) {
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dot += (double) y[i] * (double) x[i];
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i++;
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}
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return (dot);
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}
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BLASLONG n1 = n & -2;
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while (i < n1) {
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dot += (double) y[iy] * (double) x[ix];
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dot += (double) y[iy + inc_y] * (double) x[ix + inc_x];
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ix += inc_x * 2;
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iy += inc_y * 2;
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i += 2;
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}
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while (i < n) {
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dot += (double) y[iy] * (double) x[ix];
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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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return (dot);
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}
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