added optimimized zgemv_t c-kernel
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wernsaar
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dbc2eff029
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/***************************************************************************
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Copyright (c) 2014, 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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/*
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#if defined(HASWELL)
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#include "zgemv_t_microk_haswell-2.c"
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#endif
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*/
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#define NBMAX 1028
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#ifndef HAVE_KERNEL_16x4
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static void zgemv_kernel_16x4(BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
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{
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BLASLONG i;
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FLOAT *a0,*a1,*a2,*a3;
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a0 = ap[0];
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a1 = ap[1];
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a2 = ap[2];
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a3 = ap[3];
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FLOAT temp_r0 = 0.0;
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FLOAT temp_r1 = 0.0;
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FLOAT temp_r2 = 0.0;
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FLOAT temp_r3 = 0.0;
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FLOAT temp_i0 = 0.0;
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FLOAT temp_i1 = 0.0;
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FLOAT temp_i2 = 0.0;
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FLOAT temp_i3 = 0.0;
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for ( i=0; i< 2*n; i+=2 )
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{
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#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
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temp_r0 += a0[i]*x[i] - a0[i+1]*x[i+1];
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temp_i0 += a0[i]*x[i+1] + a0[i+1]*x[i];
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temp_r1 += a1[i]*x[i] - a1[i+1]*x[i+1];
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temp_i1 += a1[i]*x[i+1] + a1[i+1]*x[i];
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temp_r2 += a2[i]*x[i] - a2[i+1]*x[i+1];
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temp_i2 += a2[i]*x[i+1] + a2[i+1]*x[i];
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temp_r3 += a3[i]*x[i] - a3[i+1]*x[i+1];
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temp_i3 += a3[i]*x[i+1] + a3[i+1]*x[i];
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#else
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temp_r0 += a0[i]*x[i] + a0[i+1]*x[i+1];
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temp_i0 += a0[i]*x[i+1] - a0[i+1]*x[i];
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temp_r1 += a1[i]*x[i] + a1[i+1]*x[i+1];
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temp_i1 += a1[i]*x[i+1] - a1[i+1]*x[i];
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temp_r2 += a2[i]*x[i] + a2[i+1]*x[i+1];
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temp_i2 += a2[i]*x[i+1] - a2[i+1]*x[i];
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temp_r3 += a3[i]*x[i] + a3[i+1]*x[i+1];
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temp_i3 += a3[i]*x[i+1] - a3[i+1]*x[i];
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#endif
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}
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y[0] = temp_r0;
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y[1] = temp_i0;
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y[2] = temp_r1;
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y[3] = temp_i1;
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y[4] = temp_r2;
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y[5] = temp_i2;
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y[6] = temp_r3;
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y[7] = temp_i3;
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}
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#endif
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static void zgemv_kernel_16x1(BLASLONG n, FLOAT *ap, FLOAT *x, FLOAT *y)
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{
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BLASLONG i;
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FLOAT *a0;
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a0 = ap;
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FLOAT temp_r = 0.0;
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FLOAT temp_i = 0.0;
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for ( i=0; i< 2*n; i+=2 )
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{
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#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
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temp_r += a0[i]*x[i] - a0[i+1]*x[i+1];
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temp_i += a0[i]*x[i+1] + a0[i+1]*x[i];
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#else
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temp_r += a0[i]*x[i] + a0[i+1]*x[i+1];
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temp_i += a0[i]*x[i+1] - a0[i+1]*x[i];
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#endif
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}
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*y = temp_r;
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*(y+1) = temp_i;
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}
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static void copy_x(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_src)
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{
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BLASLONG i;
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for ( i=0; i<n; i++ )
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{
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*dest = *src;
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*(dest+1) = *(src+1);
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dest+=2;
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src += inc_src;
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}
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}
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha_r, FLOAT alpha_i, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
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{
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BLASLONG i;
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BLASLONG j;
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FLOAT *a_ptr;
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FLOAT *x_ptr;
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FLOAT *y_ptr;
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FLOAT *ap[8];
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BLASLONG n1;
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BLASLONG m1;
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BLASLONG m2;
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BLASLONG n2;
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FLOAT ybuffer[8],*xbuffer;
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inc_x *= 2;
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inc_y *= 2;
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lda *= 2;
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xbuffer = buffer;
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n1 = n / 4 ;
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n2 = n % 4 ;
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m1 = m - ( m % 16 );
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m2 = (m % NBMAX) - (m % 16) ;
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BLASLONG NB = NBMAX;
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while ( NB == NBMAX )
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{
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m1 -= NB;
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if ( m1 < 0)
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{
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if ( m2 == 0 ) break;
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NB = m2;
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}
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y_ptr = y;
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a_ptr = a;
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x_ptr = x;
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copy_x(NB,x_ptr,xbuffer,inc_x);
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for( i = 0; i < n1 ; i++)
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{
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ap[0] = a_ptr;
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ap[1] = a_ptr + lda;
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ap[2] = ap[1] + lda;
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ap[3] = ap[2] + lda;
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zgemv_kernel_16x4(NB,ap,xbuffer,ybuffer);
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a_ptr += 4 * lda;
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#if !defined(XCONJ)
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y_ptr[0] += alpha_r * ybuffer[0] - alpha_i * ybuffer[1];
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y_ptr[1] += alpha_r * ybuffer[1] + alpha_i * ybuffer[0];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[2] - alpha_i * ybuffer[3];
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y_ptr[1] += alpha_r * ybuffer[3] + alpha_i * ybuffer[2];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[4] - alpha_i * ybuffer[5];
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y_ptr[1] += alpha_r * ybuffer[5] + alpha_i * ybuffer[4];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[6] - alpha_i * ybuffer[7];
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y_ptr[1] += alpha_r * ybuffer[7] + alpha_i * ybuffer[6];
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y_ptr += inc_y;
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#else
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y_ptr[0] += alpha_r * ybuffer[0] + alpha_i * ybuffer[1];
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y_ptr[1] -= alpha_r * ybuffer[1] - alpha_i * ybuffer[0];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[2] + alpha_i * ybuffer[3];
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y_ptr[1] -= alpha_r * ybuffer[3] - alpha_i * ybuffer[2];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[4] + alpha_i * ybuffer[5];
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y_ptr[1] -= alpha_r * ybuffer[5] - alpha_i * ybuffer[4];
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y_ptr += inc_y;
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y_ptr[0] += alpha_r * ybuffer[6] + alpha_i * ybuffer[7];
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y_ptr[1] -= alpha_r * ybuffer[7] - alpha_i * ybuffer[6];
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y_ptr += inc_y;
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#endif
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}
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for( i = 0; i < n2 ; i++)
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{
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zgemv_kernel_16x1(NB,a_ptr,xbuffer,ybuffer);
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a_ptr += 1 * lda;
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#if !defined(XCONJ)
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y_ptr[0] += alpha_r * ybuffer[0] - alpha_i * ybuffer[1];
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y_ptr[1] += alpha_r * ybuffer[1] + alpha_i * ybuffer[0];
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y_ptr += inc_y;
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#else
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y_ptr[0] += alpha_r * ybuffer[0] + alpha_i * ybuffer[1];
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y_ptr[1] -= alpha_r * ybuffer[1] - alpha_i * ybuffer[0];
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y_ptr += inc_y;
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#endif
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}
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a += 2* NB;
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x += NB * inc_x;
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}
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BLASLONG m3 = m % 16;
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if ( m3 == 0 ) return(0);
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x_ptr = x;
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copy_x(m3,x_ptr,xbuffer,inc_x);
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j=0;
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a_ptr = a;
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y_ptr = y;
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while ( j < n)
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{
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FLOAT temp_r = 0.0;
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FLOAT temp_i = 0.0;
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for( i = 0; i < m3*2; i+=2 )
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{
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#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
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temp_r += a_ptr[i] * xbuffer[i] - a_ptr[i+1] * xbuffer[i+1];
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temp_i += a_ptr[i] * xbuffer[i+1] + a_ptr[i+1] * xbuffer[i];
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#else
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temp_r += a_ptr[i] * xbuffer[i] + a_ptr[i+1] * xbuffer[i+1];
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temp_i += a_ptr[i] * xbuffer[i+1] - a_ptr[i+1] * xbuffer[i];
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#endif
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}
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a_ptr += lda;
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#if !defined(XCONJ)
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y_ptr[0] += alpha_r * temp_r - alpha_i * temp_i;
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y_ptr[1] += alpha_r * temp_i + alpha_i * temp_r;
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#else
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y_ptr[0] += alpha_r * temp_r + alpha_i * temp_i;
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y_ptr[1] -= alpha_r * temp_i - alpha_i * temp_r;
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#endif
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y_ptr += inc_y;
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j++;
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}
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return(0);
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}
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