158 lines
6.2 KiB
C
158 lines
6.2 KiB
C
/*
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Copyright (c) 2013-2018, 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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#ifndef HAVE_ASM_KERNEL
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#include <altivec.h>
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#define offset_0 0
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#define offset_1 16
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#define offset_2 32
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#define offset_3 48
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#define offset_4 64
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#define offset_5 80
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#define offset_6 96
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#define offset_7 112
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static const unsigned char __attribute__((aligned(16))) swap_mask_arr[]={ 4,5,6,7,0,1,2,3, 12,13,14,15, 8,9,10,11};
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static void caxpy_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT alpha_r, FLOAT alpha_i)
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{
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#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
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register __vector float valpha_r = {alpha_r, alpha_r,alpha_r, alpha_r};
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register __vector float valpha_i = {-alpha_i, alpha_i,-alpha_i, alpha_i};
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#else
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register __vector float valpha_r = {alpha_r, -alpha_r,alpha_r, -alpha_r};
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register __vector float valpha_i = {alpha_i, alpha_i,alpha_i, alpha_i};
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#endif
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__vector unsigned char swap_mask = *((__vector unsigned char*)swap_mask_arr);
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register __vector float *vptr_y = (__vector float *) y;
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register __vector float *vptr_x = (__vector float *) x;
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BLASLONG i=0;
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for(;i<n/2;i+=8){
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register __vector float vy_0 = vec_vsx_ld( offset_0 ,vptr_y ) ;
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register __vector float vy_1 = vec_vsx_ld( offset_1 ,vptr_y ) ;
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register __vector float vy_2 = vec_vsx_ld( offset_2 ,vptr_y ) ;
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register __vector float vy_3 = vec_vsx_ld( offset_3 ,vptr_y ) ;
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register __vector float vy_4 = vec_vsx_ld( offset_4 ,vptr_y ) ;
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register __vector float vy_5 = vec_vsx_ld( offset_5 ,vptr_y ) ;
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register __vector float vy_6 = vec_vsx_ld( offset_6 ,vptr_y ) ;
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register __vector float vy_7 = vec_vsx_ld( offset_7 ,vptr_y ) ;
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register __vector float vx_0 = vec_vsx_ld( offset_0 ,vptr_x ) ;
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register __vector float vx_1 = vec_vsx_ld( offset_1 ,vptr_x ) ;
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register __vector float vx_2 = vec_vsx_ld( offset_2 ,vptr_x ) ;
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register __vector float vx_3 = vec_vsx_ld( offset_3 ,vptr_x ) ;
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register __vector float vx_4 = vec_vsx_ld( offset_4 ,vptr_x ) ;
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register __vector float vx_5 = vec_vsx_ld( offset_5 ,vptr_x ) ;
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register __vector float vx_6 = vec_vsx_ld( offset_6 ,vptr_x ) ;
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register __vector float vx_7 = vec_vsx_ld( offset_7 ,vptr_x ) ;
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vy_0 += vx_0*valpha_r;
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vy_1 += vx_1*valpha_r;
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vy_2 += vx_2*valpha_r;
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vy_3 += vx_3*valpha_r;
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vy_4 += vx_4*valpha_r;
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vy_5 += vx_5*valpha_r;
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vy_6 += vx_6*valpha_r;
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vy_7 += vx_7*valpha_r;
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vx_0 = vec_perm(vx_0, vx_0, swap_mask);
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vx_1 = vec_perm(vx_1, vx_1, swap_mask);
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vx_2 = vec_perm(vx_2, vx_2, swap_mask);
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vx_3 = vec_perm(vx_3, vx_3, swap_mask);
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vx_4 = vec_perm(vx_4, vx_4, swap_mask);
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vx_5 = vec_perm(vx_5, vx_5, swap_mask);
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vx_6 = vec_perm(vx_6, vx_6, swap_mask);
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vx_7 = vec_perm(vx_7, vx_7, swap_mask);
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vy_0 += vx_0*valpha_i;
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vy_1 += vx_1*valpha_i;
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vy_2 += vx_2*valpha_i;
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vy_3 += vx_3*valpha_i;
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vy_4 += vx_4*valpha_i;
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vy_5 += vx_5*valpha_i;
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vy_6 += vx_6*valpha_i;
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vy_7 += vx_7*valpha_i;
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vec_vsx_st( vy_0, offset_0 ,vptr_y ) ;
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vec_vsx_st( vy_1, offset_1 ,vptr_y ) ;
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vec_vsx_st( vy_2, offset_2 ,vptr_y ) ;
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vec_vsx_st( vy_3, offset_3 ,vptr_y ) ;
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vec_vsx_st( vy_4, offset_4 ,vptr_y ) ;
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vec_vsx_st( vy_5, offset_5 ,vptr_y ) ;
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vec_vsx_st( vy_6, offset_6 ,vptr_y ) ;
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vec_vsx_st( vy_7, offset_7 ,vptr_y ) ;
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vptr_x+=8;
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vptr_y+=8;
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}
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}
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#endif
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int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2) {
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BLASLONG i = 0;
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BLASLONG ix = 0, iy = 0;
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if (n <= 0) return (0);
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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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caxpy_kernel_16(n1, x, y, da_r,da_i);
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ix = 2 * n1;
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}
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i = n1;
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while (i < n) {
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#if !defined(CONJ)
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y[ix] += (da_r * x[ix] - da_i * x[ix + 1]);
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y[ix + 1] += (da_r * x[ix + 1] + da_i * x[ix]);
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#else
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y[ix] += (da_r * x[ix] + da_i * x[ix + 1]);
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y[ix + 1] -= (da_r * x[ix + 1] - da_i * x[ix]);
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#endif
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i++;
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ix += 2;
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}
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return (0);
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}
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inc_x *= 2;
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inc_y *= 2;
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while (i < n) {
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#if !defined(CONJ)
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y[iy] += (da_r * x[ix] - da_i * x[ix + 1]);
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y[iy + 1] += (da_r * x[ix + 1] + da_i * x[ix]);
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#else
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y[iy] += (da_r * x[ix] + da_i * x[ix + 1]);
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y[iy + 1] -= (da_r * x[ix + 1] - da_i * x[ix]);
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#endif
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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 (0);
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}
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